workspace.rs

   1pub mod dock;
   2pub mod item;
   3mod modal_layer;
   4pub mod notifications;
   5pub mod pane;
   6pub mod pane_group;
   7mod persistence;
   8pub mod searchable;
   9pub mod shared_screen;
  10mod status_bar;
  11mod toolbar;
  12mod workspace_settings;
  13
  14use anyhow::{anyhow, Context as _, Result};
  15use call::{call_settings::CallSettings, ActiveCall};
  16use client::{
  17    proto::{self, ErrorCode, PeerId},
  18    ChannelId, Client, ErrorExt, HostedProjectId, Status, TypedEnvelope, UserStore,
  19};
  20use collections::{hash_map, HashMap, HashSet};
  21use derive_more::{Deref, DerefMut};
  22use dock::{Dock, DockPosition, Panel, PanelButtons, PanelHandle};
  23use futures::{
  24    channel::{mpsc, oneshot},
  25    future::try_join_all,
  26    Future, FutureExt, StreamExt,
  27};
  28use gpui::{
  29    actions, canvas, div, impl_actions, point, px, size, Action, AnyElement, AnyModel, AnyView,
  30    AnyWeakView, AppContext, AsyncAppContext, AsyncWindowContext, Bounds, Context, Div,
  31    DragMoveEvent, Element, ElementContext, Entity, EntityId, EventEmitter, FocusHandle,
  32    FocusableView, Global, GlobalPixels, InteractiveElement, IntoElement, KeyContext, Keystroke,
  33    LayoutId, ManagedView, Model, ModelContext, ParentElement, PathPromptOptions, Pixels, Point,
  34    PromptLevel, Render, SharedString, Size, Styled, Subscription, Task, View, ViewContext,
  35    VisualContext, WeakView, WindowBounds, WindowContext, WindowHandle, WindowOptions,
  36};
  37use item::{FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, ProjectItem};
  38use itertools::Itertools;
  39use language::{LanguageRegistry, Rope};
  40use lazy_static::lazy_static;
  41pub use modal_layer::*;
  42use node_runtime::NodeRuntime;
  43use notifications::{simple_message_notification::MessageNotification, NotificationHandle};
  44pub use pane::*;
  45pub use pane_group::*;
  46use persistence::{model::SerializedWorkspace, SerializedWindowsBounds, DB};
  47pub use persistence::{
  48    model::{ItemId, WorkspaceLocation},
  49    WorkspaceDb, DB as WORKSPACE_DB,
  50};
  51use postage::stream::Stream;
  52use project::{Project, ProjectEntryId, ProjectPath, Worktree, WorktreeId};
  53use serde::Deserialize;
  54use settings::Settings;
  55use shared_screen::SharedScreen;
  56use status_bar::StatusBar;
  57pub use status_bar::StatusItemView;
  58use std::{
  59    any::TypeId,
  60    borrow::Cow,
  61    cell::RefCell,
  62    cmp,
  63    collections::hash_map::DefaultHasher,
  64    env,
  65    hash::{Hash, Hasher},
  66    path::{Path, PathBuf},
  67    rc::Rc,
  68    sync::{atomic::AtomicUsize, Arc, Weak},
  69    time::Duration,
  70};
  71use task::SpawnInTerminal;
  72use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  73pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  74pub use ui;
  75use ui::Label;
  76use util::ResultExt;
  77use uuid::Uuid;
  78pub use workspace_settings::{AutosaveSetting, WorkspaceSettings};
  79
  80use crate::persistence::{
  81    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  82    SerializedAxis,
  83};
  84
  85lazy_static! {
  86    static ref ZED_WINDOW_SIZE: Option<Size<GlobalPixels>> = env::var("ZED_WINDOW_SIZE")
  87        .ok()
  88        .as_deref()
  89        .and_then(parse_pixel_size_env_var);
  90    static ref ZED_WINDOW_POSITION: Option<Point<GlobalPixels>> = env::var("ZED_WINDOW_POSITION")
  91        .ok()
  92        .as_deref()
  93        .and_then(parse_pixel_position_env_var);
  94}
  95
  96#[derive(Clone, PartialEq)]
  97pub struct RemoveWorktreeFromProject(pub WorktreeId);
  98
  99actions!(
 100    workspace,
 101    [
 102        Open,
 103        NewFile,
 104        NewWindow,
 105        CloseWindow,
 106        AddFolderToProject,
 107        Unfollow,
 108        SaveAs,
 109        SaveWithoutFormat,
 110        ReloadActiveItem,
 111        ActivatePreviousPane,
 112        ActivateNextPane,
 113        FollowNextCollaborator,
 114        NewTerminal,
 115        NewCenterTerminal,
 116        NewSearch,
 117        Feedback,
 118        Restart,
 119        Welcome,
 120        ToggleZoom,
 121        ToggleLeftDock,
 122        ToggleRightDock,
 123        ToggleBottomDock,
 124        CloseAllDocks,
 125    ]
 126);
 127
 128#[derive(Clone, PartialEq)]
 129pub struct OpenPaths {
 130    pub paths: Vec<PathBuf>,
 131}
 132
 133#[derive(Clone, Deserialize, PartialEq)]
 134pub struct ActivatePane(pub usize);
 135
 136#[derive(Clone, Deserialize, PartialEq)]
 137pub struct ActivatePaneInDirection(pub SplitDirection);
 138
 139#[derive(Clone, Deserialize, PartialEq)]
 140pub struct SwapPaneInDirection(pub SplitDirection);
 141
 142#[derive(Clone, Deserialize, PartialEq)]
 143pub struct NewFileInDirection(pub SplitDirection);
 144
 145#[derive(Clone, PartialEq, Debug, Deserialize)]
 146#[serde(rename_all = "camelCase")]
 147pub struct SaveAll {
 148    pub save_intent: Option<SaveIntent>,
 149}
 150
 151#[derive(Clone, PartialEq, Debug, Deserialize)]
 152#[serde(rename_all = "camelCase")]
 153pub struct Save {
 154    pub save_intent: Option<SaveIntent>,
 155}
 156
 157#[derive(Clone, PartialEq, Debug, Deserialize, Default)]
 158#[serde(rename_all = "camelCase")]
 159pub struct CloseAllItemsAndPanes {
 160    pub save_intent: Option<SaveIntent>,
 161}
 162
 163#[derive(Clone, PartialEq, Debug, Deserialize, Default)]
 164#[serde(rename_all = "camelCase")]
 165pub struct CloseInactiveTabsAndPanes {
 166    pub save_intent: Option<SaveIntent>,
 167}
 168
 169#[derive(Clone, Deserialize, PartialEq)]
 170pub struct SendKeystrokes(pub String);
 171
 172impl_actions!(
 173    workspace,
 174    [
 175        ActivatePane,
 176        ActivatePaneInDirection,
 177        CloseAllItemsAndPanes,
 178        CloseInactiveTabsAndPanes,
 179        NewFileInDirection,
 180        OpenTerminal,
 181        Save,
 182        SaveAll,
 183        SwapPaneInDirection,
 184        SendKeystrokes,
 185    ]
 186);
 187
 188#[derive(Deserialize)]
 189pub struct Toast {
 190    id: usize,
 191    msg: Cow<'static, str>,
 192    #[serde(skip)]
 193    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut WindowContext)>)>,
 194}
 195
 196impl Toast {
 197    pub fn new<I: Into<Cow<'static, str>>>(id: usize, msg: I) -> Self {
 198        Toast {
 199            id,
 200            msg: msg.into(),
 201            on_click: None,
 202        }
 203    }
 204
 205    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
 206    where
 207        M: Into<Cow<'static, str>>,
 208        F: Fn(&mut WindowContext) + 'static,
 209    {
 210        self.on_click = Some((message.into(), Arc::new(on_click)));
 211        self
 212    }
 213}
 214
 215impl PartialEq for Toast {
 216    fn eq(&self, other: &Self) -> bool {
 217        self.id == other.id
 218            && self.msg == other.msg
 219            && self.on_click.is_some() == other.on_click.is_some()
 220    }
 221}
 222
 223impl Clone for Toast {
 224    fn clone(&self) -> Self {
 225        Toast {
 226            id: self.id,
 227            msg: self.msg.to_owned(),
 228            on_click: self.on_click.clone(),
 229        }
 230    }
 231}
 232
 233#[derive(Debug, Default, Clone, Deserialize, PartialEq)]
 234pub struct OpenTerminal {
 235    pub working_directory: PathBuf,
 236}
 237
 238pub type WorkspaceId = i64;
 239
 240pub fn init_settings(cx: &mut AppContext) {
 241    WorkspaceSettings::register(cx);
 242    ItemSettings::register(cx);
 243}
 244
 245pub fn init(app_state: Arc<AppState>, cx: &mut AppContext) {
 246    init_settings(cx);
 247    notifications::init(cx);
 248
 249    cx.on_action(Workspace::close_global);
 250    cx.on_action(restart);
 251
 252    cx.on_action({
 253        let app_state = Arc::downgrade(&app_state);
 254        move |_: &Open, cx: &mut AppContext| {
 255            let paths = cx.prompt_for_paths(PathPromptOptions {
 256                files: true,
 257                directories: true,
 258                multiple: true,
 259            });
 260
 261            if let Some(app_state) = app_state.upgrade() {
 262                cx.spawn(move |cx| async move {
 263                    if let Some(paths) = paths.await.log_err().flatten() {
 264                        cx.update(|cx| {
 265                            open_paths(&paths, &app_state, None, cx).detach_and_log_err(cx)
 266                        })
 267                        .ok();
 268                    }
 269                })
 270                .detach();
 271            }
 272        }
 273    });
 274}
 275
 276#[derive(Clone, Default, Deref, DerefMut)]
 277struct ProjectItemBuilders(
 278    HashMap<TypeId, fn(Model<Project>, AnyModel, &mut ViewContext<Pane>) -> Box<dyn ItemHandle>>,
 279);
 280
 281impl Global for ProjectItemBuilders {}
 282
 283pub fn register_project_item<I: ProjectItem>(cx: &mut AppContext) {
 284    let builders = cx.default_global::<ProjectItemBuilders>();
 285    builders.insert(TypeId::of::<I::Item>(), |project, model, cx| {
 286        let item = model.downcast::<I::Item>().unwrap();
 287        Box::new(cx.new_view(|cx| I::for_project_item(project, item, cx)))
 288    });
 289}
 290
 291type FollowableItemBuilder = fn(
 292    View<Pane>,
 293    View<Workspace>,
 294    ViewId,
 295    &mut Option<proto::view::Variant>,
 296    &mut WindowContext,
 297) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>;
 298
 299#[derive(Default, Deref, DerefMut)]
 300struct FollowableItemBuilders(
 301    HashMap<
 302        TypeId,
 303        (
 304            FollowableItemBuilder,
 305            fn(&AnyView) -> Box<dyn FollowableItemHandle>,
 306        ),
 307    >,
 308);
 309
 310impl Global for FollowableItemBuilders {}
 311
 312pub fn register_followable_item<I: FollowableItem>(cx: &mut AppContext) {
 313    let builders = cx.default_global::<FollowableItemBuilders>();
 314    builders.insert(
 315        TypeId::of::<I>(),
 316        (
 317            |pane, workspace, id, state, cx| {
 318                I::from_state_proto(pane, workspace, id, state, cx).map(|task| {
 319                    cx.foreground_executor()
 320                        .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
 321                })
 322            },
 323            |this| Box::new(this.clone().downcast::<I>().unwrap()),
 324        ),
 325    );
 326}
 327
 328#[derive(Default, Deref, DerefMut)]
 329struct ItemDeserializers(
 330    HashMap<
 331        Arc<str>,
 332        fn(
 333            Model<Project>,
 334            WeakView<Workspace>,
 335            WorkspaceId,
 336            ItemId,
 337            &mut ViewContext<Pane>,
 338        ) -> Task<Result<Box<dyn ItemHandle>>>,
 339    >,
 340);
 341
 342impl Global for ItemDeserializers {}
 343
 344pub fn register_deserializable_item<I: Item>(cx: &mut AppContext) {
 345    if let Some(serialized_item_kind) = I::serialized_item_kind() {
 346        let deserializers = cx.default_global::<ItemDeserializers>();
 347        deserializers.insert(
 348            Arc::from(serialized_item_kind),
 349            |project, workspace, workspace_id, item_id, cx| {
 350                let task = I::deserialize(project, workspace, workspace_id, item_id, cx);
 351                cx.foreground_executor()
 352                    .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
 353            },
 354        );
 355    }
 356}
 357
 358pub struct AppState {
 359    pub languages: Arc<LanguageRegistry>,
 360    pub client: Arc<Client>,
 361    pub user_store: Model<UserStore>,
 362    pub workspace_store: Model<WorkspaceStore>,
 363    pub fs: Arc<dyn fs::Fs>,
 364    pub build_window_options:
 365        fn(Option<WindowBounds>, Option<Uuid>, &mut AppContext) -> WindowOptions,
 366    pub node_runtime: Arc<dyn NodeRuntime>,
 367}
 368
 369struct GlobalAppState(Weak<AppState>);
 370
 371impl Global for GlobalAppState {}
 372
 373pub struct WorkspaceStore {
 374    workspaces: HashSet<WindowHandle<Workspace>>,
 375    client: Arc<Client>,
 376    _subscriptions: Vec<client::Subscription>,
 377}
 378
 379#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
 380struct Follower {
 381    project_id: Option<u64>,
 382    peer_id: PeerId,
 383}
 384
 385impl AppState {
 386    pub fn global(cx: &AppContext) -> Weak<Self> {
 387        cx.global::<GlobalAppState>().0.clone()
 388    }
 389    pub fn try_global(cx: &AppContext) -> Option<Weak<Self>> {
 390        cx.try_global::<GlobalAppState>()
 391            .map(|state| state.0.clone())
 392    }
 393    pub fn set_global(state: Weak<AppState>, cx: &mut AppContext) {
 394        cx.set_global(GlobalAppState(state));
 395    }
 396
 397    #[cfg(any(test, feature = "test-support"))]
 398    pub fn test(cx: &mut AppContext) -> Arc<Self> {
 399        use node_runtime::FakeNodeRuntime;
 400        use settings::SettingsStore;
 401
 402        if !cx.has_global::<SettingsStore>() {
 403            let settings_store = SettingsStore::test(cx);
 404            cx.set_global(settings_store);
 405        }
 406
 407        let fs = fs::FakeFs::new(cx.background_executor().clone());
 408        let languages = Arc::new(LanguageRegistry::test());
 409        let clock = Arc::new(clock::FakeSystemClock::default());
 410        let http_client = util::http::FakeHttpClient::with_404_response();
 411        let client = Client::new(clock, http_client.clone(), cx);
 412        let user_store = cx.new_model(|cx| UserStore::new(client.clone(), cx));
 413        let workspace_store = cx.new_model(|cx| WorkspaceStore::new(client.clone(), cx));
 414
 415        theme::init(theme::LoadThemes::JustBase, cx);
 416        client::init(&client, cx);
 417        crate::init_settings(cx);
 418
 419        Arc::new(Self {
 420            client,
 421            fs,
 422            languages,
 423            user_store,
 424            workspace_store,
 425            node_runtime: FakeNodeRuntime::new(),
 426            build_window_options: |_, _, _| Default::default(),
 427        })
 428    }
 429}
 430
 431struct DelayedDebouncedEditAction {
 432    task: Option<Task<()>>,
 433    cancel_channel: Option<oneshot::Sender<()>>,
 434}
 435
 436impl DelayedDebouncedEditAction {
 437    fn new() -> DelayedDebouncedEditAction {
 438        DelayedDebouncedEditAction {
 439            task: None,
 440            cancel_channel: None,
 441        }
 442    }
 443
 444    fn fire_new<F>(&mut self, delay: Duration, cx: &mut ViewContext<Workspace>, func: F)
 445    where
 446        F: 'static + Send + FnOnce(&mut Workspace, &mut ViewContext<Workspace>) -> Task<Result<()>>,
 447    {
 448        if let Some(channel) = self.cancel_channel.take() {
 449            _ = channel.send(());
 450        }
 451
 452        let (sender, mut receiver) = oneshot::channel::<()>();
 453        self.cancel_channel = Some(sender);
 454
 455        let previous_task = self.task.take();
 456        self.task = Some(cx.spawn(move |workspace, mut cx| async move {
 457            let mut timer = cx.background_executor().timer(delay).fuse();
 458            if let Some(previous_task) = previous_task {
 459                previous_task.await;
 460            }
 461
 462            futures::select_biased! {
 463                _ = receiver => return,
 464                    _ = timer => {}
 465            }
 466
 467            if let Some(result) = workspace
 468                .update(&mut cx, |workspace, cx| (func)(workspace, cx))
 469                .log_err()
 470            {
 471                result.await.log_err();
 472            }
 473        }));
 474    }
 475}
 476
 477pub enum Event {
 478    PaneAdded(View<Pane>),
 479    ContactRequestedJoin(u64),
 480    WorkspaceCreated(WeakView<Workspace>),
 481    SpawnTask(SpawnInTerminal),
 482}
 483
 484pub enum OpenVisible {
 485    All,
 486    None,
 487    OnlyFiles,
 488    OnlyDirectories,
 489}
 490
 491pub struct Workspace {
 492    weak_self: WeakView<Self>,
 493    workspace_actions: Vec<Box<dyn Fn(Div, &mut ViewContext<Self>) -> Div>>,
 494    zoomed: Option<AnyWeakView>,
 495    zoomed_position: Option<DockPosition>,
 496    center: PaneGroup,
 497    left_dock: View<Dock>,
 498    bottom_dock: View<Dock>,
 499    right_dock: View<Dock>,
 500    panes: Vec<View<Pane>>,
 501    panes_by_item: HashMap<EntityId, WeakView<Pane>>,
 502    active_pane: View<Pane>,
 503    last_active_center_pane: Option<WeakView<Pane>>,
 504    last_active_view_id: Option<proto::ViewId>,
 505    status_bar: View<StatusBar>,
 506    modal_layer: View<ModalLayer>,
 507    titlebar_item: Option<AnyView>,
 508    notifications: Vec<(TypeId, usize, Box<dyn NotificationHandle>)>,
 509    project: Model<Project>,
 510    follower_states: HashMap<View<Pane>, FollowerState>,
 511    last_leaders_by_pane: HashMap<WeakView<Pane>, PeerId>,
 512    window_edited: bool,
 513    active_call: Option<(Model<ActiveCall>, Vec<Subscription>)>,
 514    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 515    database_id: WorkspaceId,
 516    app_state: Arc<AppState>,
 517    dispatching_keystrokes: Rc<RefCell<Vec<Keystroke>>>,
 518    _subscriptions: Vec<Subscription>,
 519    _apply_leader_updates: Task<Result<()>>,
 520    _observe_current_user: Task<Result<()>>,
 521    _schedule_serialize: Option<Task<()>>,
 522    pane_history_timestamp: Arc<AtomicUsize>,
 523    bounds: Bounds<Pixels>,
 524}
 525
 526impl EventEmitter<Event> for Workspace {}
 527
 528#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 529pub struct ViewId {
 530    pub creator: PeerId,
 531    pub id: u64,
 532}
 533
 534#[derive(Default)]
 535struct FollowerState {
 536    leader_id: PeerId,
 537    active_view_id: Option<ViewId>,
 538    items_by_leader_view_id: HashMap<ViewId, Box<dyn FollowableItemHandle>>,
 539}
 540
 541impl Workspace {
 542    pub fn new(
 543        workspace_id: WorkspaceId,
 544        project: Model<Project>,
 545        app_state: Arc<AppState>,
 546        cx: &mut ViewContext<Self>,
 547    ) -> Self {
 548        cx.observe(&project, |_, _, cx| cx.notify()).detach();
 549        cx.subscribe(&project, move |this, _, event, cx| {
 550            match event {
 551                project::Event::RemoteIdChanged(_) => {
 552                    this.update_window_title(cx);
 553                }
 554
 555                project::Event::CollaboratorLeft(peer_id) => {
 556                    this.collaborator_left(*peer_id, cx);
 557                }
 558
 559                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded => {
 560                    this.update_window_title(cx);
 561                    this.serialize_workspace(cx);
 562                }
 563
 564                project::Event::DisconnectedFromHost => {
 565                    this.update_window_edited(cx);
 566                    let panes_to_unfollow: Vec<View<Pane>> =
 567                        this.follower_states.keys().map(|k| k.clone()).collect();
 568                    for pane in panes_to_unfollow {
 569                        this.unfollow(&pane, cx);
 570                    }
 571                    cx.disable_focus();
 572                }
 573
 574                project::Event::Closed => {
 575                    cx.remove_window();
 576                }
 577
 578                project::Event::DeletedEntry(entry_id) => {
 579                    for pane in this.panes.iter() {
 580                        pane.update(cx, |pane, cx| {
 581                            pane.handle_deleted_project_item(*entry_id, cx)
 582                        });
 583                    }
 584                }
 585
 586                project::Event::Notification(message) => this.show_notification(0, cx, |cx| {
 587                    cx.new_view(|_| MessageNotification::new(message.clone()))
 588                }),
 589
 590                project::Event::LanguageServerPrompt(request) => {
 591                    let mut hasher = DefaultHasher::new();
 592                    request.message.as_str().hash(&mut hasher);
 593                    let id = hasher.finish();
 594
 595                    this.show_notification(id as usize, cx, |cx| {
 596                        cx.new_view(|_| notifications::LanguageServerPrompt::new(request.clone()))
 597                    });
 598                }
 599
 600                _ => {}
 601            }
 602            cx.notify()
 603        })
 604        .detach();
 605
 606        cx.on_focus_lost(|this, cx| {
 607            let focus_handle = this.focus_handle(cx);
 608            cx.focus(&focus_handle);
 609        })
 610        .detach();
 611
 612        let weak_handle = cx.view().downgrade();
 613        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 614
 615        let center_pane = cx.new_view(|cx| {
 616            Pane::new(
 617                weak_handle.clone(),
 618                project.clone(),
 619                pane_history_timestamp.clone(),
 620                None,
 621                cx,
 622            )
 623        });
 624        cx.subscribe(&center_pane, Self::handle_pane_event).detach();
 625
 626        cx.focus_view(&center_pane);
 627        cx.emit(Event::PaneAdded(center_pane.clone()));
 628
 629        let window_handle = cx.window_handle().downcast::<Workspace>().unwrap();
 630        app_state.workspace_store.update(cx, |store, _| {
 631            store.workspaces.insert(window_handle);
 632        });
 633
 634        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 635        let mut connection_status = app_state.client.status();
 636        let _observe_current_user = cx.spawn(|this, mut cx| async move {
 637            current_user.next().await;
 638            connection_status.next().await;
 639            let mut stream =
 640                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 641
 642            while stream.recv().await.is_some() {
 643                this.update(&mut cx, |_, cx| cx.notify())?;
 644            }
 645            anyhow::Ok(())
 646        });
 647
 648        // All leader updates are enqueued and then processed in a single task, so
 649        // that each asynchronous operation can be run in order.
 650        let (leader_updates_tx, mut leader_updates_rx) =
 651            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 652        let _apply_leader_updates = cx.spawn(|this, mut cx| async move {
 653            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 654                Self::process_leader_update(&this, leader_id, update, &mut cx)
 655                    .await
 656                    .log_err();
 657            }
 658
 659            Ok(())
 660        });
 661
 662        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 663
 664        let left_dock = Dock::new(DockPosition::Left, cx);
 665        let bottom_dock = Dock::new(DockPosition::Bottom, cx);
 666        let right_dock = Dock::new(DockPosition::Right, cx);
 667        let left_dock_buttons = cx.new_view(|cx| PanelButtons::new(left_dock.clone(), cx));
 668        let bottom_dock_buttons = cx.new_view(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 669        let right_dock_buttons = cx.new_view(|cx| PanelButtons::new(right_dock.clone(), cx));
 670        let status_bar = cx.new_view(|cx| {
 671            let mut status_bar = StatusBar::new(&center_pane.clone(), cx);
 672            status_bar.add_left_item(left_dock_buttons, cx);
 673            status_bar.add_right_item(right_dock_buttons, cx);
 674            status_bar.add_right_item(bottom_dock_buttons, cx);
 675            status_bar
 676        });
 677
 678        let modal_layer = cx.new_view(|_| ModalLayer::new());
 679
 680        let mut active_call = None;
 681        if let Some(call) = ActiveCall::try_global(cx) {
 682            let call = call.clone();
 683            let subscriptions = vec![cx.subscribe(&call, Self::on_active_call_event)];
 684            active_call = Some((call, subscriptions));
 685        }
 686
 687        let subscriptions = vec![
 688            cx.observe_window_activation(Self::on_window_activation_changed),
 689            cx.observe_window_bounds(move |_, cx| {
 690                if let Some(display) = cx.display() {
 691                    // Transform fixed bounds to be stored in terms of the containing display
 692                    let mut bounds = cx.window_bounds();
 693                    if let WindowBounds::Fixed(window_bounds) = &mut bounds {
 694                        let display_bounds = display.bounds();
 695                        window_bounds.origin.x -= display_bounds.origin.x;
 696                        window_bounds.origin.y -= display_bounds.origin.y;
 697                    }
 698
 699                    if let Some(display_uuid) = display.uuid().log_err() {
 700                        cx.background_executor()
 701                            .spawn(DB.set_window_bounds(
 702                                workspace_id,
 703                                SerializedWindowsBounds(bounds),
 704                                display_uuid,
 705                            ))
 706                            .detach_and_log_err(cx);
 707                    }
 708                }
 709                cx.notify();
 710            }),
 711            cx.observe_window_appearance(|_, cx| {
 712                let window_appearance = cx.appearance();
 713
 714                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 715
 716                ThemeSettings::reload_current_theme(cx);
 717            }),
 718            cx.observe(&left_dock, |this, _, cx| {
 719                this.serialize_workspace(cx);
 720                cx.notify();
 721            }),
 722            cx.observe(&bottom_dock, |this, _, cx| {
 723                this.serialize_workspace(cx);
 724                cx.notify();
 725            }),
 726            cx.observe(&right_dock, |this, _, cx| {
 727                this.serialize_workspace(cx);
 728                cx.notify();
 729            }),
 730            cx.on_release(|this, window, cx| {
 731                this.app_state.workspace_store.update(cx, |store, _| {
 732                    let window = window.downcast::<Self>().unwrap();
 733                    store.workspaces.remove(&window);
 734                })
 735            }),
 736        ];
 737
 738        cx.defer(|this, cx| {
 739            this.update_window_title(cx);
 740        });
 741        Workspace {
 742            weak_self: weak_handle.clone(),
 743            zoomed: None,
 744            zoomed_position: None,
 745            center: PaneGroup::new(center_pane.clone()),
 746            panes: vec![center_pane.clone()],
 747            panes_by_item: Default::default(),
 748            active_pane: center_pane.clone(),
 749            last_active_center_pane: Some(center_pane.downgrade()),
 750            last_active_view_id: None,
 751            status_bar,
 752            modal_layer,
 753            titlebar_item: None,
 754            notifications: Default::default(),
 755            left_dock,
 756            bottom_dock,
 757            right_dock,
 758            project: project.clone(),
 759            follower_states: Default::default(),
 760            last_leaders_by_pane: Default::default(),
 761            dispatching_keystrokes: Default::default(),
 762            window_edited: false,
 763            active_call,
 764            database_id: workspace_id,
 765            app_state,
 766            _observe_current_user,
 767            _apply_leader_updates,
 768            _schedule_serialize: None,
 769            leader_updates_tx,
 770            _subscriptions: subscriptions,
 771            pane_history_timestamp,
 772            workspace_actions: Default::default(),
 773            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 774            bounds: Default::default(),
 775        }
 776    }
 777
 778    fn new_local(
 779        abs_paths: Vec<PathBuf>,
 780        app_state: Arc<AppState>,
 781        requesting_window: Option<WindowHandle<Workspace>>,
 782        cx: &mut AppContext,
 783    ) -> Task<
 784        anyhow::Result<(
 785            WindowHandle<Workspace>,
 786            Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>,
 787        )>,
 788    > {
 789        let project_handle = Project::local(
 790            app_state.client.clone(),
 791            app_state.node_runtime.clone(),
 792            app_state.user_store.clone(),
 793            app_state.languages.clone(),
 794            app_state.fs.clone(),
 795            cx,
 796        );
 797
 798        cx.spawn(|mut cx| async move {
 799            let serialized_workspace: Option<SerializedWorkspace> =
 800                persistence::DB.workspace_for_roots(abs_paths.as_slice());
 801
 802            let paths_to_open = Arc::new(abs_paths);
 803
 804            // Get project paths for all of the abs_paths
 805            let mut worktree_roots: HashSet<Arc<Path>> = Default::default();
 806            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 807                Vec::with_capacity(paths_to_open.len());
 808            for path in paths_to_open.iter().cloned() {
 809                if let Some((worktree, project_entry)) = cx
 810                    .update(|cx| {
 811                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 812                    })?
 813                    .await
 814                    .log_err()
 815                {
 816                    worktree_roots.extend(worktree.update(&mut cx, |tree, _| tree.abs_path()).ok());
 817                    project_paths.push((path, Some(project_entry)));
 818                } else {
 819                    project_paths.push((path, None));
 820                }
 821            }
 822
 823            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 824                serialized_workspace.id
 825            } else {
 826                DB.next_id().await.unwrap_or(0)
 827            };
 828
 829            let window = if let Some(window) = requesting_window {
 830                cx.update_window(window.into(), |_, cx| {
 831                    cx.replace_root_view(|cx| {
 832                        Workspace::new(workspace_id, project_handle.clone(), app_state.clone(), cx)
 833                    });
 834                })?;
 835                window
 836            } else {
 837                let window_bounds_override = window_bounds_env_override(&cx);
 838                let (bounds, display) = if let Some(bounds) = window_bounds_override {
 839                    (Some(bounds), None)
 840                } else {
 841                    serialized_workspace
 842                        .as_ref()
 843                        .and_then(|serialized_workspace| {
 844                            let serialized_display = serialized_workspace.display?;
 845                            let mut bounds = serialized_workspace.bounds?;
 846
 847                            // Stored bounds are relative to the containing display.
 848                            // So convert back to global coordinates if that screen still exists
 849                            if let WindowBounds::Fixed(mut window_bounds) = bounds {
 850                                let screen = cx
 851                                    .update(|cx| {
 852                                        cx.displays().into_iter().find(|display| {
 853                                            display.uuid().ok() == Some(serialized_display)
 854                                        })
 855                                    })
 856                                    .ok()??;
 857                                let screen_bounds = screen.bounds();
 858                                window_bounds.origin.x += screen_bounds.origin.x;
 859                                window_bounds.origin.y += screen_bounds.origin.y;
 860                                bounds = WindowBounds::Fixed(window_bounds);
 861                            }
 862
 863                            Some((bounds, serialized_display))
 864                        })
 865                        .unzip()
 866                };
 867
 868                // Use the serialized workspace to construct the new window
 869                let options =
 870                    cx.update(|cx| (app_state.build_window_options)(bounds, display, cx))?;
 871
 872                cx.open_window(options, {
 873                    let app_state = app_state.clone();
 874                    let project_handle = project_handle.clone();
 875                    move |cx| {
 876                        cx.new_view(|cx| {
 877                            Workspace::new(workspace_id, project_handle, app_state, cx)
 878                        })
 879                    }
 880                })?
 881            };
 882
 883            window
 884                .update(&mut cx, |_, cx| cx.activate_window())
 885                .log_err();
 886
 887            notify_if_database_failed(window, &mut cx);
 888            let opened_items = window
 889                .update(&mut cx, |_workspace, cx| {
 890                    open_items(serialized_workspace, project_paths, app_state, cx)
 891                })?
 892                .await
 893                .unwrap_or_default();
 894
 895            Ok((window, opened_items))
 896        })
 897    }
 898
 899    pub fn weak_handle(&self) -> WeakView<Self> {
 900        self.weak_self.clone()
 901    }
 902
 903    pub fn left_dock(&self) -> &View<Dock> {
 904        &self.left_dock
 905    }
 906
 907    pub fn bottom_dock(&self) -> &View<Dock> {
 908        &self.bottom_dock
 909    }
 910
 911    pub fn right_dock(&self) -> &View<Dock> {
 912        &self.right_dock
 913    }
 914
 915    pub fn is_edited(&self) -> bool {
 916        self.window_edited
 917    }
 918
 919    pub fn add_panel<T: Panel>(&mut self, panel: View<T>, cx: &mut WindowContext) {
 920        let dock = match panel.position(cx) {
 921            DockPosition::Left => &self.left_dock,
 922            DockPosition::Bottom => &self.bottom_dock,
 923            DockPosition::Right => &self.right_dock,
 924        };
 925
 926        dock.update(cx, |dock, cx| {
 927            dock.add_panel(panel, self.weak_self.clone(), cx)
 928        });
 929    }
 930
 931    pub fn status_bar(&self) -> &View<StatusBar> {
 932        &self.status_bar
 933    }
 934
 935    pub fn app_state(&self) -> &Arc<AppState> {
 936        &self.app_state
 937    }
 938
 939    pub fn user_store(&self) -> &Model<UserStore> {
 940        &self.app_state.user_store
 941    }
 942
 943    pub fn project(&self) -> &Model<Project> {
 944        &self.project
 945    }
 946
 947    pub fn recent_navigation_history(
 948        &self,
 949        limit: Option<usize>,
 950        cx: &AppContext,
 951    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 952        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 953        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 954        for pane in &self.panes {
 955            let pane = pane.read(cx);
 956            pane.nav_history()
 957                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 958                    if let Some(fs_path) = &fs_path {
 959                        abs_paths_opened
 960                            .entry(fs_path.clone())
 961                            .or_default()
 962                            .insert(project_path.clone());
 963                    }
 964                    let timestamp = entry.timestamp;
 965                    match history.entry(project_path) {
 966                        hash_map::Entry::Occupied(mut entry) => {
 967                            let (_, old_timestamp) = entry.get();
 968                            if &timestamp > old_timestamp {
 969                                entry.insert((fs_path, timestamp));
 970                            }
 971                        }
 972                        hash_map::Entry::Vacant(entry) => {
 973                            entry.insert((fs_path, timestamp));
 974                        }
 975                    }
 976                });
 977        }
 978
 979        history
 980            .into_iter()
 981            .sorted_by_key(|(_, (_, timestamp))| *timestamp)
 982            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 983            .rev()
 984            .filter(|(history_path, abs_path)| {
 985                let latest_project_path_opened = abs_path
 986                    .as_ref()
 987                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 988                    .and_then(|project_paths| {
 989                        project_paths
 990                            .iter()
 991                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 992                    });
 993
 994                match latest_project_path_opened {
 995                    Some(latest_project_path_opened) => latest_project_path_opened == history_path,
 996                    None => true,
 997                }
 998            })
 999            .take(limit.unwrap_or(usize::MAX))
1000            .collect()
1001    }
1002
1003    fn navigate_history(
1004        &mut self,
1005        pane: WeakView<Pane>,
1006        mode: NavigationMode,
1007        cx: &mut ViewContext<Workspace>,
1008    ) -> Task<Result<()>> {
1009        let to_load = if let Some(pane) = pane.upgrade() {
1010            pane.update(cx, |pane, cx| {
1011                pane.focus(cx);
1012                loop {
1013                    // Retrieve the weak item handle from the history.
1014                    let entry = pane.nav_history_mut().pop(mode, cx)?;
1015
1016                    // If the item is still present in this pane, then activate it.
1017                    if let Some(index) = entry
1018                        .item
1019                        .upgrade()
1020                        .and_then(|v| pane.index_for_item(v.as_ref()))
1021                    {
1022                        let prev_active_item_index = pane.active_item_index();
1023                        pane.nav_history_mut().set_mode(mode);
1024                        pane.activate_item(index, true, true, cx);
1025                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
1026
1027                        let mut navigated = prev_active_item_index != pane.active_item_index();
1028                        if let Some(data) = entry.data {
1029                            navigated |= pane.active_item()?.navigate(data, cx);
1030                        }
1031
1032                        if navigated {
1033                            break None;
1034                        }
1035                    }
1036                    // If the item is no longer present in this pane, then retrieve its
1037                    // project path in order to reopen it.
1038                    else {
1039                        break pane
1040                            .nav_history()
1041                            .path_for_item(entry.item.id())
1042                            .map(|(project_path, _)| (project_path, entry));
1043                    }
1044                }
1045            })
1046        } else {
1047            None
1048        };
1049
1050        if let Some((project_path, entry)) = to_load {
1051            // If the item was no longer present, then load it again from its previous path.
1052            let task = self.load_path(project_path, cx);
1053            cx.spawn(|workspace, mut cx| async move {
1054                let task = task.await;
1055                let mut navigated = false;
1056                if let Some((project_entry_id, build_item)) = task.log_err() {
1057                    let prev_active_item_id = pane.update(&mut cx, |pane, _| {
1058                        pane.nav_history_mut().set_mode(mode);
1059                        pane.active_item().map(|p| p.item_id())
1060                    })?;
1061
1062                    pane.update(&mut cx, |pane, cx| {
1063                        let item = pane.open_item(project_entry_id, true, cx, build_item);
1064                        navigated |= Some(item.item_id()) != prev_active_item_id;
1065                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
1066                        if let Some(data) = entry.data {
1067                            navigated |= item.navigate(data, cx);
1068                        }
1069                    })?;
1070                }
1071
1072                if !navigated {
1073                    workspace
1074                        .update(&mut cx, |workspace, cx| {
1075                            Self::navigate_history(workspace, pane, mode, cx)
1076                        })?
1077                        .await?;
1078                }
1079
1080                Ok(())
1081            })
1082        } else {
1083            Task::ready(Ok(()))
1084        }
1085    }
1086
1087    pub fn go_back(
1088        &mut self,
1089        pane: WeakView<Pane>,
1090        cx: &mut ViewContext<Workspace>,
1091    ) -> Task<Result<()>> {
1092        self.navigate_history(pane, NavigationMode::GoingBack, cx)
1093    }
1094
1095    pub fn go_forward(
1096        &mut self,
1097        pane: WeakView<Pane>,
1098        cx: &mut ViewContext<Workspace>,
1099    ) -> Task<Result<()>> {
1100        self.navigate_history(pane, NavigationMode::GoingForward, cx)
1101    }
1102
1103    pub fn reopen_closed_item(&mut self, cx: &mut ViewContext<Workspace>) -> Task<Result<()>> {
1104        self.navigate_history(
1105            self.active_pane().downgrade(),
1106            NavigationMode::ReopeningClosedItem,
1107            cx,
1108        )
1109    }
1110
1111    pub fn client(&self) -> &Client {
1112        &self.app_state.client
1113    }
1114
1115    pub fn set_titlebar_item(&mut self, item: AnyView, cx: &mut ViewContext<Self>) {
1116        self.titlebar_item = Some(item);
1117        cx.notify();
1118    }
1119
1120    pub fn titlebar_item(&self) -> Option<AnyView> {
1121        self.titlebar_item.clone()
1122    }
1123
1124    /// Call the given callback with a workspace whose project is local.
1125    ///
1126    /// If the given workspace has a local project, then it will be passed
1127    /// to the callback. Otherwise, a new empty window will be created.
1128    pub fn with_local_workspace<T, F>(
1129        &mut self,
1130        cx: &mut ViewContext<Self>,
1131        callback: F,
1132    ) -> Task<Result<T>>
1133    where
1134        T: 'static,
1135        F: 'static + FnOnce(&mut Workspace, &mut ViewContext<Workspace>) -> T,
1136    {
1137        if self.project.read(cx).is_local() {
1138            Task::Ready(Some(Ok(callback(self, cx))))
1139        } else {
1140            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, cx);
1141            cx.spawn(|_vh, mut cx| async move {
1142                let (workspace, _) = task.await?;
1143                workspace.update(&mut cx, callback)
1144            })
1145        }
1146    }
1147
1148    pub fn worktrees<'a>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Model<Worktree>> {
1149        self.project.read(cx).worktrees()
1150    }
1151
1152    pub fn visible_worktrees<'a>(
1153        &self,
1154        cx: &'a AppContext,
1155    ) -> impl 'a + Iterator<Item = Model<Worktree>> {
1156        self.project.read(cx).visible_worktrees(cx)
1157    }
1158
1159    pub fn worktree_scans_complete(&self, cx: &AppContext) -> impl Future<Output = ()> + 'static {
1160        let futures = self
1161            .worktrees(cx)
1162            .filter_map(|worktree| worktree.read(cx).as_local())
1163            .map(|worktree| worktree.scan_complete())
1164            .collect::<Vec<_>>();
1165        async move {
1166            for future in futures {
1167                future.await;
1168            }
1169        }
1170    }
1171
1172    pub fn close_global(_: &CloseWindow, cx: &mut AppContext) {
1173        cx.defer(|cx| {
1174            cx.windows().iter().find(|window| {
1175                window
1176                    .update(cx, |_, window| {
1177                        if window.is_window_active() {
1178                            //This can only get called when the window's project connection has been lost
1179                            //so we don't need to prompt the user for anything and instead just close the window
1180                            window.remove_window();
1181                            true
1182                        } else {
1183                            false
1184                        }
1185                    })
1186                    .unwrap_or(false)
1187            });
1188        });
1189    }
1190
1191    pub fn close_window(&mut self, _: &CloseWindow, cx: &mut ViewContext<Self>) {
1192        let window = cx.window_handle();
1193        let prepare = self.prepare_to_close(false, cx);
1194        cx.spawn(|_, mut cx| async move {
1195            if prepare.await? {
1196                window.update(&mut cx, |_, cx| {
1197                    cx.remove_window();
1198                })?;
1199            }
1200            anyhow::Ok(())
1201        })
1202        .detach_and_log_err(cx)
1203    }
1204
1205    pub fn prepare_to_close(
1206        &mut self,
1207        quitting: bool,
1208        cx: &mut ViewContext<Self>,
1209    ) -> Task<Result<bool>> {
1210        let active_call = self.active_call().cloned();
1211        let window = cx.window_handle();
1212
1213        cx.spawn(|this, mut cx| async move {
1214            let workspace_count = (*cx).update(|cx| {
1215                cx.windows()
1216                    .iter()
1217                    .filter(|window| window.downcast::<Workspace>().is_some())
1218                    .count()
1219            })?;
1220
1221            if let Some(active_call) = active_call {
1222                if !quitting
1223                    && workspace_count == 1
1224                    && active_call.read_with(&cx, |call, _| call.room().is_some())?
1225                {
1226                    let answer = window.update(&mut cx, |_, cx| {
1227                        cx.prompt(
1228                            PromptLevel::Warning,
1229                            "Do you want to leave the current call?",
1230                            None,
1231                            &["Close window and hang up", "Cancel"],
1232                        )
1233                    })?;
1234
1235                    if answer.await.log_err() == Some(1) {
1236                        return anyhow::Ok(false);
1237                    } else {
1238                        active_call
1239                            .update(&mut cx, |call, cx| call.hang_up(cx))?
1240                            .await
1241                            .log_err();
1242                    }
1243                }
1244            }
1245
1246            this.update(&mut cx, |this, cx| {
1247                this.save_all_internal(SaveIntent::Close, cx)
1248            })?
1249            .await
1250        })
1251    }
1252
1253    fn save_all(&mut self, action: &SaveAll, cx: &mut ViewContext<Self>) {
1254        self.save_all_internal(action.save_intent.unwrap_or(SaveIntent::SaveAll), cx)
1255            .detach_and_log_err(cx);
1256    }
1257
1258    fn send_keystrokes(&mut self, action: &SendKeystrokes, cx: &mut ViewContext<Self>) {
1259        let mut keystrokes: Vec<Keystroke> = action
1260            .0
1261            .split(' ')
1262            .flat_map(|k| Keystroke::parse(k).log_err())
1263            .collect();
1264        keystrokes.reverse();
1265
1266        self.dispatching_keystrokes
1267            .borrow_mut()
1268            .append(&mut keystrokes);
1269
1270        let keystrokes = self.dispatching_keystrokes.clone();
1271        cx.window_context()
1272            .spawn(|mut cx| async move {
1273                // limit to 100 keystrokes to avoid infinite recursion.
1274                for _ in 0..100 {
1275                    let Some(keystroke) = keystrokes.borrow_mut().pop() else {
1276                        return Ok(());
1277                    };
1278                    cx.update(|cx| {
1279                        let focused = cx.focused();
1280                        cx.dispatch_keystroke(keystroke.clone());
1281                        if cx.focused() != focused {
1282                            // dispatch_keystroke may cause the focus to change.
1283                            // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
1284                            // And we need that to happen before the next keystroke to keep vim mode happy...
1285                            // (Note that the tests always do this implicitly, so you must manually test with something like:
1286                            //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
1287                            // )
1288                            cx.draw();
1289                        }
1290                    })?;
1291                }
1292                keystrokes.borrow_mut().clear();
1293                Err(anyhow!("over 100 keystrokes passed to send_keystrokes"))
1294            })
1295            .detach_and_log_err(cx);
1296    }
1297
1298    fn save_all_internal(
1299        &mut self,
1300        mut save_intent: SaveIntent,
1301        cx: &mut ViewContext<Self>,
1302    ) -> Task<Result<bool>> {
1303        if self.project.read(cx).is_disconnected() {
1304            return Task::ready(Ok(true));
1305        }
1306        let dirty_items = self
1307            .panes
1308            .iter()
1309            .flat_map(|pane| {
1310                pane.read(cx).items().filter_map(|item| {
1311                    if item.is_dirty(cx) {
1312                        Some((pane.downgrade(), item.boxed_clone()))
1313                    } else {
1314                        None
1315                    }
1316                })
1317            })
1318            .collect::<Vec<_>>();
1319
1320        let project = self.project.clone();
1321        cx.spawn(|workspace, mut cx| async move {
1322            // Override save mode and display "Save all files" prompt
1323            if save_intent == SaveIntent::Close && dirty_items.len() > 1 {
1324                let answer = workspace.update(&mut cx, |_, cx| {
1325                    let (prompt, detail) = Pane::file_names_for_prompt(
1326                        &mut dirty_items.iter().map(|(_, handle)| handle),
1327                        dirty_items.len(),
1328                        cx,
1329                    );
1330                    cx.prompt(
1331                        PromptLevel::Warning,
1332                        &prompt,
1333                        Some(&detail),
1334                        &["Save all", "Discard all", "Cancel"],
1335                    )
1336                })?;
1337                match answer.await.log_err() {
1338                    Some(0) => save_intent = SaveIntent::SaveAll,
1339                    Some(1) => save_intent = SaveIntent::Skip,
1340                    _ => {}
1341                }
1342            }
1343            for (pane, item) in dirty_items {
1344                let (singleton, project_entry_ids) =
1345                    cx.update(|cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
1346                if singleton || !project_entry_ids.is_empty() {
1347                    if let Some(ix) =
1348                        pane.update(&mut cx, |pane, _| pane.index_for_item(item.as_ref()))?
1349                    {
1350                        if !Pane::save_item(
1351                            project.clone(),
1352                            &pane,
1353                            ix,
1354                            &*item,
1355                            save_intent,
1356                            &mut cx,
1357                        )
1358                        .await?
1359                        {
1360                            return Ok(false);
1361                        }
1362                    }
1363                }
1364            }
1365            Ok(true)
1366        })
1367    }
1368
1369    pub fn open(&mut self, _: &Open, cx: &mut ViewContext<Self>) {
1370        self.client()
1371            .telemetry()
1372            .report_app_event("open project".to_string());
1373        let paths = cx.prompt_for_paths(PathPromptOptions {
1374            files: true,
1375            directories: true,
1376            multiple: true,
1377        });
1378
1379        cx.spawn(|this, mut cx| async move {
1380            let Some(paths) = paths.await.log_err().flatten() else {
1381                return;
1382            };
1383
1384            if let Some(task) = this
1385                .update(&mut cx, |this, cx| {
1386                    this.open_workspace_for_paths(false, paths, cx)
1387                })
1388                .log_err()
1389            {
1390                task.await.log_err();
1391            }
1392        })
1393        .detach()
1394    }
1395
1396    pub fn open_workspace_for_paths(
1397        &mut self,
1398        replace_current_window: bool,
1399        paths: Vec<PathBuf>,
1400        cx: &mut ViewContext<Self>,
1401    ) -> Task<Result<()>> {
1402        let window = cx.window_handle().downcast::<Self>();
1403        let is_remote = self.project.read(cx).is_remote();
1404        let has_worktree = self.project.read(cx).worktrees().next().is_some();
1405        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
1406
1407        let window_to_replace = if replace_current_window {
1408            window
1409        } else if is_remote || has_worktree || has_dirty_items {
1410            None
1411        } else {
1412            window
1413        };
1414        let app_state = self.app_state.clone();
1415
1416        cx.spawn(|_, mut cx| async move {
1417            cx.update(|cx| open_paths(&paths, &app_state, window_to_replace, cx))?
1418                .await?;
1419            Ok(())
1420        })
1421    }
1422
1423    #[allow(clippy::type_complexity)]
1424    pub fn open_paths(
1425        &mut self,
1426        mut abs_paths: Vec<PathBuf>,
1427        visible: OpenVisible,
1428        pane: Option<WeakView<Pane>>,
1429        cx: &mut ViewContext<Self>,
1430    ) -> Task<Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>> {
1431        log::info!("open paths {abs_paths:?}");
1432
1433        let fs = self.app_state.fs.clone();
1434
1435        // Sort the paths to ensure we add worktrees for parents before their children.
1436        abs_paths.sort_unstable();
1437        cx.spawn(move |this, mut cx| async move {
1438            let mut tasks = Vec::with_capacity(abs_paths.len());
1439
1440            for abs_path in &abs_paths {
1441                let visible = match visible {
1442                    OpenVisible::All => Some(true),
1443                    OpenVisible::None => Some(false),
1444                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
1445                        Some(Some(metadata)) => Some(!metadata.is_dir),
1446                        Some(None) => {
1447                            log::error!("No metadata for file {abs_path:?}");
1448                            None
1449                        }
1450                        None => None,
1451                    },
1452                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
1453                        Some(Some(metadata)) => Some(metadata.is_dir),
1454                        Some(None) => {
1455                            log::error!("No metadata for file {abs_path:?}");
1456                            None
1457                        }
1458                        None => None,
1459                    },
1460                };
1461                let project_path = match visible {
1462                    Some(visible) => match this
1463                        .update(&mut cx, |this, cx| {
1464                            Workspace::project_path_for_path(
1465                                this.project.clone(),
1466                                abs_path,
1467                                visible,
1468                                cx,
1469                            )
1470                        })
1471                        .log_err()
1472                    {
1473                        Some(project_path) => project_path.await.log_err(),
1474                        None => None,
1475                    },
1476                    None => None,
1477                };
1478
1479                let this = this.clone();
1480                let abs_path = abs_path.clone();
1481                let fs = fs.clone();
1482                let pane = pane.clone();
1483                let task = cx.spawn(move |mut cx| async move {
1484                    let (worktree, project_path) = project_path?;
1485                    if fs.is_file(&abs_path).await {
1486                        Some(
1487                            this.update(&mut cx, |this, cx| {
1488                                this.open_path(project_path, pane, true, cx)
1489                            })
1490                            .log_err()?
1491                            .await,
1492                        )
1493                    } else {
1494                        this.update(&mut cx, |workspace, cx| {
1495                            let worktree = worktree.read(cx);
1496                            let worktree_abs_path = worktree.abs_path();
1497                            let entry_id = if abs_path == worktree_abs_path.as_ref() {
1498                                worktree.root_entry()
1499                            } else {
1500                                abs_path
1501                                    .strip_prefix(worktree_abs_path.as_ref())
1502                                    .ok()
1503                                    .and_then(|relative_path| {
1504                                        worktree.entry_for_path(relative_path)
1505                                    })
1506                            }
1507                            .map(|entry| entry.id);
1508                            if let Some(entry_id) = entry_id {
1509                                workspace.project.update(cx, |_, cx| {
1510                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
1511                                })
1512                            }
1513                        })
1514                        .log_err()?;
1515                        None
1516                    }
1517                });
1518                tasks.push(task);
1519            }
1520
1521            futures::future::join_all(tasks).await
1522        })
1523    }
1524
1525    fn add_folder_to_project(&mut self, _: &AddFolderToProject, cx: &mut ViewContext<Self>) {
1526        let paths = cx.prompt_for_paths(PathPromptOptions {
1527            files: false,
1528            directories: true,
1529            multiple: true,
1530        });
1531        cx.spawn(|this, mut cx| async move {
1532            if let Some(paths) = paths.await.log_err().flatten() {
1533                let results = this
1534                    .update(&mut cx, |this, cx| {
1535                        this.open_paths(paths, OpenVisible::All, None, cx)
1536                    })?
1537                    .await;
1538                for result in results.into_iter().flatten() {
1539                    result.log_err();
1540                }
1541            }
1542            anyhow::Ok(())
1543        })
1544        .detach_and_log_err(cx);
1545    }
1546
1547    fn project_path_for_path(
1548        project: Model<Project>,
1549        abs_path: &Path,
1550        visible: bool,
1551        cx: &mut AppContext,
1552    ) -> Task<Result<(Model<Worktree>, ProjectPath)>> {
1553        let entry = project.update(cx, |project, cx| {
1554            project.find_or_create_local_worktree(abs_path, visible, cx)
1555        });
1556        cx.spawn(|mut cx| async move {
1557            let (worktree, path) = entry.await?;
1558            let worktree_id = worktree.update(&mut cx, |t, _| t.id())?;
1559            Ok((
1560                worktree,
1561                ProjectPath {
1562                    worktree_id,
1563                    path: path.into(),
1564                },
1565            ))
1566        })
1567    }
1568
1569    pub fn items<'a>(
1570        &'a self,
1571        cx: &'a AppContext,
1572    ) -> impl 'a + Iterator<Item = &Box<dyn ItemHandle>> {
1573        self.panes.iter().flat_map(|pane| pane.read(cx).items())
1574    }
1575
1576    pub fn item_of_type<T: Item>(&self, cx: &AppContext) -> Option<View<T>> {
1577        self.items_of_type(cx).max_by_key(|item| item.item_id())
1578    }
1579
1580    pub fn items_of_type<'a, T: Item>(
1581        &'a self,
1582        cx: &'a AppContext,
1583    ) -> impl 'a + Iterator<Item = View<T>> {
1584        self.panes
1585            .iter()
1586            .flat_map(|pane| pane.read(cx).items_of_type())
1587    }
1588
1589    pub fn active_item(&self, cx: &AppContext) -> Option<Box<dyn ItemHandle>> {
1590        self.active_pane().read(cx).active_item()
1591    }
1592
1593    pub fn active_item_as<I: 'static>(&self, cx: &AppContext) -> Option<View<I>> {
1594        let item = self.active_item(cx)?;
1595        item.to_any().downcast::<I>().ok()
1596    }
1597
1598    fn active_project_path(&self, cx: &AppContext) -> Option<ProjectPath> {
1599        self.active_item(cx).and_then(|item| item.project_path(cx))
1600    }
1601
1602    pub fn save_active_item(
1603        &mut self,
1604        save_intent: SaveIntent,
1605        cx: &mut WindowContext,
1606    ) -> Task<Result<()>> {
1607        let project = self.project.clone();
1608        let pane = self.active_pane();
1609        let item_ix = pane.read(cx).active_item_index();
1610        let item = pane.read(cx).active_item();
1611        let pane = pane.downgrade();
1612
1613        cx.spawn(|mut cx| async move {
1614            if let Some(item) = item {
1615                Pane::save_item(project, &pane, item_ix, item.as_ref(), save_intent, &mut cx)
1616                    .await
1617                    .map(|_| ())
1618            } else {
1619                Ok(())
1620            }
1621        })
1622    }
1623
1624    pub fn close_inactive_items_and_panes(
1625        &mut self,
1626        action: &CloseInactiveTabsAndPanes,
1627        cx: &mut ViewContext<Self>,
1628    ) {
1629        if let Some(task) =
1630            self.close_all_internal(true, action.save_intent.unwrap_or(SaveIntent::Close), cx)
1631        {
1632            task.detach_and_log_err(cx)
1633        }
1634    }
1635
1636    pub fn close_all_items_and_panes(
1637        &mut self,
1638        action: &CloseAllItemsAndPanes,
1639        cx: &mut ViewContext<Self>,
1640    ) {
1641        if let Some(task) =
1642            self.close_all_internal(false, action.save_intent.unwrap_or(SaveIntent::Close), cx)
1643        {
1644            task.detach_and_log_err(cx)
1645        }
1646    }
1647
1648    fn close_all_internal(
1649        &mut self,
1650        retain_active_pane: bool,
1651        save_intent: SaveIntent,
1652        cx: &mut ViewContext<Self>,
1653    ) -> Option<Task<Result<()>>> {
1654        let current_pane = self.active_pane();
1655
1656        let mut tasks = Vec::new();
1657
1658        if retain_active_pane {
1659            if let Some(current_pane_close) = current_pane.update(cx, |pane, cx| {
1660                pane.close_inactive_items(&CloseInactiveItems { save_intent: None }, cx)
1661            }) {
1662                tasks.push(current_pane_close);
1663            };
1664        }
1665
1666        for pane in self.panes() {
1667            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
1668                continue;
1669            }
1670
1671            if let Some(close_pane_items) = pane.update(cx, |pane: &mut Pane, cx| {
1672                pane.close_all_items(
1673                    &CloseAllItems {
1674                        save_intent: Some(save_intent),
1675                    },
1676                    cx,
1677                )
1678            }) {
1679                tasks.push(close_pane_items)
1680            }
1681        }
1682
1683        if tasks.is_empty() {
1684            None
1685        } else {
1686            Some(cx.spawn(|_, _| async move {
1687                for task in tasks {
1688                    task.await?
1689                }
1690                Ok(())
1691            }))
1692        }
1693    }
1694
1695    pub fn toggle_dock(&mut self, dock_side: DockPosition, cx: &mut ViewContext<Self>) {
1696        let dock = match dock_side {
1697            DockPosition::Left => &self.left_dock,
1698            DockPosition::Bottom => &self.bottom_dock,
1699            DockPosition::Right => &self.right_dock,
1700        };
1701        let mut focus_center = false;
1702        let mut reveal_dock = false;
1703        dock.update(cx, |dock, cx| {
1704            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
1705            let was_visible = dock.is_open() && !other_is_zoomed;
1706            dock.set_open(!was_visible, cx);
1707
1708            if let Some(active_panel) = dock.active_panel() {
1709                if was_visible {
1710                    if active_panel.focus_handle(cx).contains_focused(cx) {
1711                        focus_center = true;
1712                    }
1713                } else {
1714                    let focus_handle = &active_panel.focus_handle(cx);
1715                    cx.focus(focus_handle);
1716                    reveal_dock = true;
1717                }
1718            }
1719        });
1720
1721        if reveal_dock {
1722            self.dismiss_zoomed_items_to_reveal(Some(dock_side), cx);
1723        }
1724
1725        if focus_center {
1726            self.active_pane.update(cx, |pane, cx| pane.focus(cx))
1727        }
1728
1729        cx.notify();
1730        self.serialize_workspace(cx);
1731    }
1732
1733    pub fn close_all_docks(&mut self, cx: &mut ViewContext<Self>) {
1734        let docks = [&self.left_dock, &self.bottom_dock, &self.right_dock];
1735
1736        for dock in docks {
1737            dock.update(cx, |dock, cx| {
1738                dock.set_open(false, cx);
1739            });
1740        }
1741
1742        cx.focus_self();
1743        cx.notify();
1744        self.serialize_workspace(cx);
1745    }
1746
1747    /// Transfer focus to the panel of the given type.
1748    pub fn focus_panel<T: Panel>(&mut self, cx: &mut ViewContext<Self>) -> Option<View<T>> {
1749        let panel = self.focus_or_unfocus_panel::<T>(cx, |_, _| true)?;
1750        panel.to_any().downcast().ok()
1751    }
1752
1753    /// Focus the panel of the given type if it isn't already focused. If it is
1754    /// already focused, then transfer focus back to the workspace center.
1755    pub fn toggle_panel_focus<T: Panel>(&mut self, cx: &mut ViewContext<Self>) {
1756        self.focus_or_unfocus_panel::<T>(cx, |panel, cx| {
1757            !panel.focus_handle(cx).contains_focused(cx)
1758        });
1759    }
1760
1761    /// Focus or unfocus the given panel type, depending on the given callback.
1762    fn focus_or_unfocus_panel<T: Panel>(
1763        &mut self,
1764        cx: &mut ViewContext<Self>,
1765        should_focus: impl Fn(&dyn PanelHandle, &mut ViewContext<Dock>) -> bool,
1766    ) -> Option<Arc<dyn PanelHandle>> {
1767        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
1768            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
1769                let mut focus_center = false;
1770                let panel = dock.update(cx, |dock, cx| {
1771                    dock.activate_panel(panel_index, cx);
1772
1773                    let panel = dock.active_panel().cloned();
1774                    if let Some(panel) = panel.as_ref() {
1775                        if should_focus(&**panel, cx) {
1776                            dock.set_open(true, cx);
1777                            panel.focus_handle(cx).focus(cx);
1778                        } else {
1779                            focus_center = true;
1780                        }
1781                    }
1782                    panel
1783                });
1784
1785                if focus_center {
1786                    self.active_pane.update(cx, |pane, cx| pane.focus(cx))
1787                }
1788
1789                self.serialize_workspace(cx);
1790                cx.notify();
1791                return panel;
1792            }
1793        }
1794        None
1795    }
1796
1797    /// Open the panel of the given type
1798    pub fn open_panel<T: Panel>(&mut self, cx: &mut ViewContext<Self>) {
1799        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
1800            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
1801                dock.update(cx, |dock, cx| {
1802                    dock.activate_panel(panel_index, cx);
1803                    dock.set_open(true, cx);
1804                });
1805            }
1806        }
1807    }
1808
1809    pub fn panel<T: Panel>(&self, cx: &WindowContext) -> Option<View<T>> {
1810        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
1811            let dock = dock.read(cx);
1812            if let Some(panel) = dock.panel::<T>() {
1813                return Some(panel);
1814            }
1815        }
1816        None
1817    }
1818
1819    fn dismiss_zoomed_items_to_reveal(
1820        &mut self,
1821        dock_to_reveal: Option<DockPosition>,
1822        cx: &mut ViewContext<Self>,
1823    ) {
1824        // If a center pane is zoomed, unzoom it.
1825        for pane in &self.panes {
1826            if pane != &self.active_pane || dock_to_reveal.is_some() {
1827                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
1828            }
1829        }
1830
1831        // If another dock is zoomed, hide it.
1832        let mut focus_center = false;
1833        for dock in [&self.left_dock, &self.right_dock, &self.bottom_dock] {
1834            dock.update(cx, |dock, cx| {
1835                if Some(dock.position()) != dock_to_reveal {
1836                    if let Some(panel) = dock.active_panel() {
1837                        if panel.is_zoomed(cx) {
1838                            focus_center |= panel.focus_handle(cx).contains_focused(cx);
1839                            dock.set_open(false, cx);
1840                        }
1841                    }
1842                }
1843            });
1844        }
1845
1846        if focus_center {
1847            self.active_pane.update(cx, |pane, cx| pane.focus(cx))
1848        }
1849
1850        if self.zoomed_position != dock_to_reveal {
1851            self.zoomed = None;
1852            self.zoomed_position = None;
1853        }
1854
1855        cx.notify();
1856    }
1857
1858    fn add_pane(&mut self, cx: &mut ViewContext<Self>) -> View<Pane> {
1859        let pane = cx.new_view(|cx| {
1860            Pane::new(
1861                self.weak_handle(),
1862                self.project.clone(),
1863                self.pane_history_timestamp.clone(),
1864                None,
1865                cx,
1866            )
1867        });
1868        cx.subscribe(&pane, Self::handle_pane_event).detach();
1869        self.panes.push(pane.clone());
1870        cx.focus_view(&pane);
1871        cx.emit(Event::PaneAdded(pane.clone()));
1872        pane
1873    }
1874
1875    pub fn add_item_to_center(
1876        &mut self,
1877        item: Box<dyn ItemHandle>,
1878        cx: &mut ViewContext<Self>,
1879    ) -> bool {
1880        if let Some(center_pane) = self.last_active_center_pane.clone() {
1881            if let Some(center_pane) = center_pane.upgrade() {
1882                center_pane.update(cx, |pane, cx| pane.add_item(item, true, true, None, cx));
1883                true
1884            } else {
1885                false
1886            }
1887        } else {
1888            false
1889        }
1890    }
1891
1892    pub fn add_item_to_active_pane(&mut self, item: Box<dyn ItemHandle>, cx: &mut WindowContext) {
1893        self.add_item(self.active_pane.clone(), item, cx)
1894    }
1895
1896    pub fn add_item(
1897        &mut self,
1898        pane: View<Pane>,
1899        item: Box<dyn ItemHandle>,
1900        cx: &mut WindowContext,
1901    ) {
1902        if let Some(text) = item.telemetry_event_text(cx) {
1903            self.client()
1904                .telemetry()
1905                .report_app_event(format!("{}: open", text));
1906        }
1907
1908        pane.update(cx, |pane, cx| pane.add_item(item, true, true, None, cx));
1909    }
1910
1911    pub fn split_item(
1912        &mut self,
1913        split_direction: SplitDirection,
1914        item: Box<dyn ItemHandle>,
1915        cx: &mut ViewContext<Self>,
1916    ) {
1917        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, cx);
1918        self.add_item(new_pane, item, cx);
1919    }
1920
1921    pub fn open_abs_path(
1922        &mut self,
1923        abs_path: PathBuf,
1924        visible: bool,
1925        cx: &mut ViewContext<Self>,
1926    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
1927        cx.spawn(|workspace, mut cx| async move {
1928            let open_paths_task_result = workspace
1929                .update(&mut cx, |workspace, cx| {
1930                    workspace.open_paths(
1931                        vec![abs_path.clone()],
1932                        if visible {
1933                            OpenVisible::All
1934                        } else {
1935                            OpenVisible::None
1936                        },
1937                        None,
1938                        cx,
1939                    )
1940                })
1941                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
1942                .await;
1943            anyhow::ensure!(
1944                open_paths_task_result.len() == 1,
1945                "open abs path {abs_path:?} task returned incorrect number of results"
1946            );
1947            match open_paths_task_result
1948                .into_iter()
1949                .next()
1950                .expect("ensured single task result")
1951            {
1952                Some(open_result) => {
1953                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
1954                }
1955                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
1956            }
1957        })
1958    }
1959
1960    pub fn split_abs_path(
1961        &mut self,
1962        abs_path: PathBuf,
1963        visible: bool,
1964        cx: &mut ViewContext<Self>,
1965    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
1966        let project_path_task =
1967            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
1968        cx.spawn(|this, mut cx| async move {
1969            let (_, path) = project_path_task.await?;
1970            this.update(&mut cx, |this, cx| this.split_path(path, cx))?
1971                .await
1972        })
1973    }
1974
1975    pub fn open_path(
1976        &mut self,
1977        path: impl Into<ProjectPath>,
1978        pane: Option<WeakView<Pane>>,
1979        focus_item: bool,
1980        cx: &mut WindowContext,
1981    ) -> Task<Result<Box<dyn ItemHandle>, anyhow::Error>> {
1982        let pane = pane.unwrap_or_else(|| {
1983            self.last_active_center_pane.clone().unwrap_or_else(|| {
1984                self.panes
1985                    .first()
1986                    .expect("There must be an active pane")
1987                    .downgrade()
1988            })
1989        });
1990
1991        let task = self.load_path(path.into(), cx);
1992        cx.spawn(move |mut cx| async move {
1993            let (project_entry_id, build_item) = task.await?;
1994            pane.update(&mut cx, |pane, cx| {
1995                pane.open_item(project_entry_id, focus_item, cx, build_item)
1996            })
1997        })
1998    }
1999
2000    pub fn split_path(
2001        &mut self,
2002        path: impl Into<ProjectPath>,
2003        cx: &mut ViewContext<Self>,
2004    ) -> Task<Result<Box<dyn ItemHandle>, anyhow::Error>> {
2005        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
2006            self.panes
2007                .first()
2008                .expect("There must be an active pane")
2009                .downgrade()
2010        });
2011
2012        if let Member::Pane(center_pane) = &self.center.root {
2013            if center_pane.read(cx).items_len() == 0 {
2014                return self.open_path(path, Some(pane), true, cx);
2015            }
2016        }
2017
2018        let task = self.load_path(path.into(), cx);
2019        cx.spawn(|this, mut cx| async move {
2020            let (project_entry_id, build_item) = task.await?;
2021            this.update(&mut cx, move |this, cx| -> Option<_> {
2022                let pane = pane.upgrade()?;
2023                let new_pane = this.split_pane(pane, SplitDirection::Right, cx);
2024                new_pane.update(cx, |new_pane, cx| {
2025                    Some(new_pane.open_item(project_entry_id, true, cx, build_item))
2026                })
2027            })
2028            .map(|option| option.ok_or_else(|| anyhow!("pane was dropped")))?
2029        })
2030    }
2031
2032    fn load_path(
2033        &mut self,
2034        path: ProjectPath,
2035        cx: &mut WindowContext,
2036    ) -> Task<
2037        Result<(
2038            Option<ProjectEntryId>,
2039            impl 'static + Send + FnOnce(&mut ViewContext<Pane>) -> Box<dyn ItemHandle>,
2040        )>,
2041    > {
2042        let project = self.project().clone();
2043        let project_item = project.update(cx, |project, cx| project.open_path(path, cx));
2044        cx.spawn(|mut cx| async move {
2045            let (project_entry_id, project_item) = project_item.await?;
2046            let build_item = cx.update(|cx| {
2047                cx.default_global::<ProjectItemBuilders>()
2048                    .get(&project_item.entity_type())
2049                    .ok_or_else(|| anyhow!("no item builder for project item"))
2050                    .cloned()
2051            })??;
2052            let build_item =
2053                move |cx: &mut ViewContext<Pane>| build_item(project, project_item, cx);
2054            Ok((project_entry_id, build_item))
2055        })
2056    }
2057
2058    pub fn open_project_item<T>(
2059        &mut self,
2060        pane: View<Pane>,
2061        project_item: Model<T::Item>,
2062        cx: &mut ViewContext<Self>,
2063    ) -> View<T>
2064    where
2065        T: ProjectItem,
2066    {
2067        use project::Item as _;
2068
2069        let entry_id = project_item.read(cx).entry_id(cx);
2070        if let Some(item) = entry_id
2071            .and_then(|entry_id| pane.read(cx).item_for_entry(entry_id, cx))
2072            .and_then(|item| item.downcast())
2073        {
2074            self.activate_item(&item, cx);
2075            return item;
2076        }
2077
2078        let item = cx.new_view(|cx| T::for_project_item(self.project().clone(), project_item, cx));
2079        self.add_item(pane, Box::new(item.clone()), cx);
2080        item
2081    }
2082
2083    pub fn open_shared_screen(&mut self, peer_id: PeerId, cx: &mut ViewContext<Self>) {
2084        if let Some(shared_screen) = self.shared_screen_for_peer(peer_id, &self.active_pane, cx) {
2085            self.active_pane.update(cx, |pane, cx| {
2086                pane.add_item(Box::new(shared_screen), false, true, None, cx)
2087            });
2088        }
2089    }
2090
2091    pub fn activate_item(&mut self, item: &dyn ItemHandle, cx: &mut WindowContext) -> bool {
2092        let result = self.panes.iter().find_map(|pane| {
2093            pane.read(cx)
2094                .index_for_item(item)
2095                .map(|ix| (pane.clone(), ix))
2096        });
2097        if let Some((pane, ix)) = result {
2098            pane.update(cx, |pane, cx| pane.activate_item(ix, true, true, cx));
2099            true
2100        } else {
2101            false
2102        }
2103    }
2104
2105    fn activate_pane_at_index(&mut self, action: &ActivatePane, cx: &mut ViewContext<Self>) {
2106        let panes = self.center.panes();
2107        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
2108            cx.focus_view(&pane);
2109        } else {
2110            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, cx);
2111        }
2112    }
2113
2114    pub fn activate_next_pane(&mut self, cx: &mut WindowContext) {
2115        let panes = self.center.panes();
2116        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
2117            let next_ix = (ix + 1) % panes.len();
2118            let next_pane = panes[next_ix].clone();
2119            cx.focus_view(&next_pane);
2120        }
2121    }
2122
2123    pub fn activate_previous_pane(&mut self, cx: &mut WindowContext) {
2124        let panes = self.center.panes();
2125        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
2126            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
2127            let prev_pane = panes[prev_ix].clone();
2128            cx.focus_view(&prev_pane);
2129        }
2130    }
2131
2132    pub fn activate_pane_in_direction(
2133        &mut self,
2134        direction: SplitDirection,
2135        cx: &mut WindowContext,
2136    ) {
2137        use ActivateInDirectionTarget as Target;
2138        enum Origin {
2139            LeftDock,
2140            RightDock,
2141            BottomDock,
2142            Center,
2143        }
2144
2145        let origin: Origin = [
2146            (&self.left_dock, Origin::LeftDock),
2147            (&self.right_dock, Origin::RightDock),
2148            (&self.bottom_dock, Origin::BottomDock),
2149        ]
2150        .into_iter()
2151        .find_map(|(dock, origin)| {
2152            if dock.focus_handle(cx).contains_focused(cx) && dock.read(cx).is_open() {
2153                Some(origin)
2154            } else {
2155                None
2156            }
2157        })
2158        .unwrap_or(Origin::Center);
2159
2160        let get_last_active_pane = || {
2161            self.last_active_center_pane.as_ref().and_then(|p| {
2162                let p = p.upgrade()?;
2163                (p.read(cx).items_len() != 0).then_some(p)
2164            })
2165        };
2166
2167        let try_dock =
2168            |dock: &View<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
2169
2170        let target = match (origin, direction) {
2171            // We're in the center, so we first try to go to a different pane,
2172            // otherwise try to go to a dock.
2173            (Origin::Center, direction) => {
2174                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
2175                    Some(Target::Pane(pane))
2176                } else {
2177                    match direction {
2178                        SplitDirection::Up => None,
2179                        SplitDirection::Down => try_dock(&self.bottom_dock),
2180                        SplitDirection::Left => try_dock(&self.left_dock),
2181                        SplitDirection::Right => try_dock(&self.right_dock),
2182                    }
2183                }
2184            }
2185
2186            (Origin::LeftDock, SplitDirection::Right) => {
2187                if let Some(last_active_pane) = get_last_active_pane() {
2188                    Some(Target::Pane(last_active_pane))
2189                } else {
2190                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
2191                }
2192            }
2193
2194            (Origin::LeftDock, SplitDirection::Down)
2195            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
2196
2197            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
2198            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
2199            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
2200
2201            (Origin::RightDock, SplitDirection::Left) => {
2202                if let Some(last_active_pane) = get_last_active_pane() {
2203                    Some(Target::Pane(last_active_pane))
2204                } else {
2205                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
2206                }
2207            }
2208
2209            _ => None,
2210        };
2211
2212        match target {
2213            Some(ActivateInDirectionTarget::Pane(pane)) => cx.focus_view(&pane),
2214            Some(ActivateInDirectionTarget::Dock(dock)) => {
2215                if let Some(panel) = dock.read(cx).active_panel() {
2216                    panel.focus_handle(cx).focus(cx);
2217                } else {
2218                    log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.read(cx).position());
2219                }
2220            }
2221            None => {}
2222        }
2223    }
2224
2225    fn find_pane_in_direction(
2226        &mut self,
2227        direction: SplitDirection,
2228        cx: &WindowContext,
2229    ) -> Option<View<Pane>> {
2230        let Some(bounding_box) = self.center.bounding_box_for_pane(&self.active_pane) else {
2231            return None;
2232        };
2233        let cursor = self.active_pane.read(cx).pixel_position_of_cursor(cx);
2234        let center = match cursor {
2235            Some(cursor) if bounding_box.contains(&cursor) => cursor,
2236            _ => bounding_box.center(),
2237        };
2238
2239        let distance_to_next = pane_group::HANDLE_HITBOX_SIZE;
2240
2241        let target = match direction {
2242            SplitDirection::Left => {
2243                Point::new(bounding_box.left() - distance_to_next.into(), center.y)
2244            }
2245            SplitDirection::Right => {
2246                Point::new(bounding_box.right() + distance_to_next.into(), center.y)
2247            }
2248            SplitDirection::Up => {
2249                Point::new(center.x, bounding_box.top() - distance_to_next.into())
2250            }
2251            SplitDirection::Down => {
2252                Point::new(center.x, bounding_box.bottom() + distance_to_next.into())
2253            }
2254        };
2255        self.center.pane_at_pixel_position(target).cloned()
2256    }
2257
2258    pub fn swap_pane_in_direction(
2259        &mut self,
2260        direction: SplitDirection,
2261        cx: &mut ViewContext<Self>,
2262    ) {
2263        if let Some(to) = self
2264            .find_pane_in_direction(direction, cx)
2265            .map(|pane| pane.clone())
2266        {
2267            self.center.swap(&self.active_pane.clone(), &to);
2268            cx.notify();
2269        }
2270    }
2271
2272    fn handle_pane_focused(&mut self, pane: View<Pane>, cx: &mut ViewContext<Self>) {
2273        if self.active_pane != pane {
2274            self.active_pane = pane.clone();
2275            self.status_bar.update(cx, |status_bar, cx| {
2276                status_bar.set_active_pane(&self.active_pane, cx);
2277            });
2278            self.active_item_path_changed(cx);
2279            self.last_active_center_pane = Some(pane.downgrade());
2280        }
2281
2282        self.dismiss_zoomed_items_to_reveal(None, cx);
2283        if pane.read(cx).is_zoomed() {
2284            self.zoomed = Some(pane.downgrade().into());
2285        } else {
2286            self.zoomed = None;
2287        }
2288        self.zoomed_position = None;
2289        self.update_active_view_for_followers(cx);
2290
2291        cx.notify();
2292    }
2293
2294    fn handle_pane_event(
2295        &mut self,
2296        pane: View<Pane>,
2297        event: &pane::Event,
2298        cx: &mut ViewContext<Self>,
2299    ) {
2300        match event {
2301            pane::Event::AddItem { item } => item.added_to_pane(self, pane, cx),
2302            pane::Event::Split(direction) => {
2303                self.split_and_clone(pane, *direction, cx);
2304            }
2305            pane::Event::Remove => self.remove_pane(pane, cx),
2306            pane::Event::ActivateItem { local } => {
2307                if *local {
2308                    self.unfollow(&pane, cx);
2309                }
2310                if &pane == self.active_pane() {
2311                    self.active_item_path_changed(cx);
2312                    self.update_active_view_for_followers(cx);
2313                }
2314            }
2315            pane::Event::ChangeItemTitle => {
2316                if pane == self.active_pane {
2317                    self.active_item_path_changed(cx);
2318                }
2319                self.update_window_edited(cx);
2320            }
2321            pane::Event::RemoveItem { item_id } => {
2322                self.update_window_edited(cx);
2323                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(*item_id) {
2324                    if entry.get().entity_id() == pane.entity_id() {
2325                        entry.remove();
2326                    }
2327                }
2328            }
2329            pane::Event::Focus => {
2330                self.handle_pane_focused(pane.clone(), cx);
2331            }
2332            pane::Event::ZoomIn => {
2333                if pane == self.active_pane {
2334                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
2335                    if pane.read(cx).has_focus(cx) {
2336                        self.zoomed = Some(pane.downgrade().into());
2337                        self.zoomed_position = None;
2338                    }
2339                    cx.notify();
2340                }
2341            }
2342            pane::Event::ZoomOut => {
2343                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
2344                if self.zoomed_position.is_none() {
2345                    self.zoomed = None;
2346                }
2347                cx.notify();
2348            }
2349        }
2350
2351        self.serialize_workspace(cx);
2352    }
2353
2354    pub fn split_pane(
2355        &mut self,
2356        pane_to_split: View<Pane>,
2357        split_direction: SplitDirection,
2358        cx: &mut ViewContext<Self>,
2359    ) -> View<Pane> {
2360        let new_pane = self.add_pane(cx);
2361        self.center
2362            .split(&pane_to_split, &new_pane, split_direction)
2363            .unwrap();
2364        cx.notify();
2365        new_pane
2366    }
2367
2368    pub fn split_and_clone(
2369        &mut self,
2370        pane: View<Pane>,
2371        direction: SplitDirection,
2372        cx: &mut ViewContext<Self>,
2373    ) -> Option<View<Pane>> {
2374        let item = pane.read(cx).active_item()?;
2375        let maybe_pane_handle = if let Some(clone) = item.clone_on_split(self.database_id(), cx) {
2376            let new_pane = self.add_pane(cx);
2377            new_pane.update(cx, |pane, cx| pane.add_item(clone, true, true, None, cx));
2378            self.center.split(&pane, &new_pane, direction).unwrap();
2379            Some(new_pane)
2380        } else {
2381            None
2382        };
2383        cx.notify();
2384        maybe_pane_handle
2385    }
2386
2387    pub fn split_pane_with_item(
2388        &mut self,
2389        pane_to_split: WeakView<Pane>,
2390        split_direction: SplitDirection,
2391        from: WeakView<Pane>,
2392        item_id_to_move: EntityId,
2393        cx: &mut ViewContext<Self>,
2394    ) {
2395        let Some(pane_to_split) = pane_to_split.upgrade() else {
2396            return;
2397        };
2398        let Some(from) = from.upgrade() else {
2399            return;
2400        };
2401
2402        let new_pane = self.add_pane(cx);
2403        self.move_item(from.clone(), new_pane.clone(), item_id_to_move, 0, cx);
2404        self.center
2405            .split(&pane_to_split, &new_pane, split_direction)
2406            .unwrap();
2407        cx.notify();
2408    }
2409
2410    pub fn split_pane_with_project_entry(
2411        &mut self,
2412        pane_to_split: WeakView<Pane>,
2413        split_direction: SplitDirection,
2414        project_entry: ProjectEntryId,
2415        cx: &mut ViewContext<Self>,
2416    ) -> Option<Task<Result<()>>> {
2417        let pane_to_split = pane_to_split.upgrade()?;
2418        let new_pane = self.add_pane(cx);
2419        self.center
2420            .split(&pane_to_split, &new_pane, split_direction)
2421            .unwrap();
2422
2423        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
2424        let task = self.open_path(path, Some(new_pane.downgrade()), true, cx);
2425        Some(cx.foreground_executor().spawn(async move {
2426            task.await?;
2427            Ok(())
2428        }))
2429    }
2430
2431    pub fn move_item(
2432        &mut self,
2433        source: View<Pane>,
2434        destination: View<Pane>,
2435        item_id_to_move: EntityId,
2436        destination_index: usize,
2437        cx: &mut ViewContext<Self>,
2438    ) {
2439        let Some((item_ix, item_handle)) = source
2440            .read(cx)
2441            .items()
2442            .enumerate()
2443            .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
2444        else {
2445            // Tab was closed during drag
2446            return;
2447        };
2448
2449        let item_handle = item_handle.clone();
2450
2451        if source != destination {
2452            // Close item from previous pane
2453            source.update(cx, |source, cx| {
2454                source.remove_item(item_ix, false, cx);
2455            });
2456        }
2457
2458        // This automatically removes duplicate items in the pane
2459        destination.update(cx, |destination, cx| {
2460            destination.add_item(item_handle, true, true, Some(destination_index), cx);
2461            destination.focus(cx)
2462        });
2463    }
2464
2465    fn remove_pane(&mut self, pane: View<Pane>, cx: &mut ViewContext<Self>) {
2466        if self.center.remove(&pane).unwrap() {
2467            self.force_remove_pane(&pane, cx);
2468            self.unfollow(&pane, cx);
2469            self.last_leaders_by_pane.remove(&pane.downgrade());
2470            for removed_item in pane.read(cx).items() {
2471                self.panes_by_item.remove(&removed_item.item_id());
2472            }
2473
2474            cx.notify();
2475        } else {
2476            self.active_item_path_changed(cx);
2477        }
2478    }
2479
2480    pub fn panes(&self) -> &[View<Pane>] {
2481        &self.panes
2482    }
2483
2484    pub fn active_pane(&self) -> &View<Pane> {
2485        &self.active_pane
2486    }
2487
2488    pub fn adjacent_pane(&mut self, cx: &mut ViewContext<Self>) -> View<Pane> {
2489        self.find_pane_in_direction(SplitDirection::Right, cx)
2490            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
2491            .unwrap_or_else(|| self.split_pane(self.active_pane.clone(), SplitDirection::Right, cx))
2492            .clone()
2493    }
2494
2495    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<View<Pane>> {
2496        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
2497        weak_pane.upgrade()
2498    }
2499
2500    fn collaborator_left(&mut self, peer_id: PeerId, cx: &mut ViewContext<Self>) {
2501        self.follower_states.retain(|_, state| {
2502            if state.leader_id == peer_id {
2503                for item in state.items_by_leader_view_id.values() {
2504                    item.set_leader_peer_id(None, cx);
2505                }
2506                false
2507            } else {
2508                true
2509            }
2510        });
2511        cx.notify();
2512    }
2513
2514    pub fn start_following(
2515        &mut self,
2516        leader_id: PeerId,
2517        cx: &mut ViewContext<Self>,
2518    ) -> Option<Task<Result<()>>> {
2519        let pane = self.active_pane().clone();
2520
2521        self.last_leaders_by_pane
2522            .insert(pane.downgrade(), leader_id);
2523        self.unfollow(&pane, cx);
2524        self.follower_states.insert(
2525            pane.clone(),
2526            FollowerState {
2527                leader_id,
2528                active_view_id: None,
2529                items_by_leader_view_id: Default::default(),
2530            },
2531        );
2532        cx.notify();
2533
2534        let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
2535        let project_id = self.project.read(cx).remote_id();
2536        let request = self.app_state.client.request(proto::Follow {
2537            room_id,
2538            project_id,
2539            leader_id: Some(leader_id),
2540        });
2541
2542        Some(cx.spawn(|this, mut cx| async move {
2543            let response = request.await?;
2544            this.update(&mut cx, |this, _| {
2545                let state = this
2546                    .follower_states
2547                    .get_mut(&pane)
2548                    .ok_or_else(|| anyhow!("following interrupted"))?;
2549                state.active_view_id = if let Some(active_view_id) = response.active_view_id {
2550                    Some(ViewId::from_proto(active_view_id)?)
2551                } else {
2552                    None
2553                };
2554                Ok::<_, anyhow::Error>(())
2555            })??;
2556            if let Some(view) = response.active_view {
2557                Self::add_view_from_leader(this.clone(), leader_id, pane.clone(), &view, &mut cx)
2558                    .await?;
2559            }
2560            Self::add_views_from_leader(
2561                this.clone(),
2562                leader_id,
2563                vec![pane],
2564                response.views,
2565                &mut cx,
2566            )
2567            .await?;
2568            this.update(&mut cx, |this, cx| this.leader_updated(leader_id, cx))?;
2569            Ok(())
2570        }))
2571    }
2572
2573    pub fn follow_next_collaborator(
2574        &mut self,
2575        _: &FollowNextCollaborator,
2576        cx: &mut ViewContext<Self>,
2577    ) {
2578        let collaborators = self.project.read(cx).collaborators();
2579        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
2580            let mut collaborators = collaborators.keys().copied();
2581            for peer_id in collaborators.by_ref() {
2582                if peer_id == leader_id {
2583                    break;
2584                }
2585            }
2586            collaborators.next()
2587        } else if let Some(last_leader_id) =
2588            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
2589        {
2590            if collaborators.contains_key(last_leader_id) {
2591                Some(*last_leader_id)
2592            } else {
2593                None
2594            }
2595        } else {
2596            None
2597        };
2598
2599        let pane = self.active_pane.clone();
2600        let Some(leader_id) = next_leader_id.or_else(|| collaborators.keys().copied().next())
2601        else {
2602            return;
2603        };
2604        if Some(leader_id) == self.unfollow(&pane, cx) {
2605            return;
2606        }
2607        if let Some(task) = self.start_following(leader_id, cx) {
2608            task.detach_and_log_err(cx)
2609        }
2610    }
2611
2612    pub fn follow(&mut self, leader_id: PeerId, cx: &mut ViewContext<Self>) {
2613        let Some(room) = ActiveCall::global(cx).read(cx).room() else {
2614            return;
2615        };
2616        let room = room.read(cx);
2617        let Some(remote_participant) = room.remote_participant_for_peer_id(leader_id) else {
2618            return;
2619        };
2620
2621        let project = self.project.read(cx);
2622
2623        let other_project_id = match remote_participant.location {
2624            call::ParticipantLocation::External => None,
2625            call::ParticipantLocation::UnsharedProject => None,
2626            call::ParticipantLocation::SharedProject { project_id } => {
2627                if Some(project_id) == project.remote_id() {
2628                    None
2629                } else {
2630                    Some(project_id)
2631                }
2632            }
2633        };
2634
2635        // if they are active in another project, follow there.
2636        if let Some(project_id) = other_project_id {
2637            let app_state = self.app_state.clone();
2638            crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
2639                .detach_and_log_err(cx);
2640        }
2641
2642        // if you're already following, find the right pane and focus it.
2643        for (pane, state) in &self.follower_states {
2644            if leader_id == state.leader_id {
2645                cx.focus_view(pane);
2646                return;
2647            }
2648        }
2649
2650        // Otherwise, follow.
2651        if let Some(task) = self.start_following(leader_id, cx) {
2652            task.detach_and_log_err(cx)
2653        }
2654    }
2655
2656    pub fn unfollow(&mut self, pane: &View<Pane>, cx: &mut ViewContext<Self>) -> Option<PeerId> {
2657        let state = self.follower_states.remove(pane)?;
2658        let leader_id = state.leader_id;
2659        for (_, item) in state.items_by_leader_view_id {
2660            item.set_leader_peer_id(None, cx);
2661        }
2662
2663        if self
2664            .follower_states
2665            .values()
2666            .all(|state| state.leader_id != state.leader_id)
2667        {
2668            let project_id = self.project.read(cx).remote_id();
2669            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
2670            self.app_state
2671                .client
2672                .send(proto::Unfollow {
2673                    room_id,
2674                    project_id,
2675                    leader_id: Some(leader_id),
2676                })
2677                .log_err();
2678        }
2679
2680        cx.notify();
2681        Some(leader_id)
2682    }
2683
2684    pub fn is_being_followed(&self, peer_id: PeerId) -> bool {
2685        self.follower_states
2686            .values()
2687            .any(|state| state.leader_id == peer_id)
2688    }
2689
2690    fn active_item_path_changed(&mut self, cx: &mut WindowContext) {
2691        let active_entry = self.active_project_path(cx);
2692        self.project
2693            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
2694        self.update_window_title(cx);
2695    }
2696
2697    fn update_window_title(&mut self, cx: &mut WindowContext) {
2698        let project = self.project().read(cx);
2699        let mut title = String::new();
2700
2701        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
2702            let filename = path
2703                .path
2704                .file_name()
2705                .map(|s| s.to_string_lossy())
2706                .or_else(|| {
2707                    Some(Cow::Borrowed(
2708                        project
2709                            .worktree_for_id(path.worktree_id, cx)?
2710                            .read(cx)
2711                            .root_name(),
2712                    ))
2713                });
2714
2715            if let Some(filename) = filename {
2716                title.push_str(filename.as_ref());
2717                title.push_str("");
2718            }
2719        }
2720
2721        for (i, name) in project.worktree_root_names(cx).enumerate() {
2722            if i > 0 {
2723                title.push_str(", ");
2724            }
2725            title.push_str(name);
2726        }
2727
2728        if title.is_empty() {
2729            title = "empty project".to_string();
2730        }
2731
2732        if project.is_remote() {
2733            title.push_str("");
2734        } else if project.is_shared() {
2735            title.push_str("");
2736        }
2737
2738        cx.set_window_title(&title);
2739    }
2740
2741    fn update_window_edited(&mut self, cx: &mut WindowContext) {
2742        let is_edited = !self.project.read(cx).is_disconnected()
2743            && self
2744                .items(cx)
2745                .any(|item| item.has_conflict(cx) || item.is_dirty(cx));
2746        if is_edited != self.window_edited {
2747            self.window_edited = is_edited;
2748            cx.set_window_edited(self.window_edited)
2749        }
2750    }
2751
2752    fn render_notifications(&self, _cx: &ViewContext<Self>) -> Option<Div> {
2753        if self.notifications.is_empty() {
2754            None
2755        } else {
2756            Some(
2757                div()
2758                    .absolute()
2759                    .z_index(100)
2760                    .right_3()
2761                    .bottom_3()
2762                    .w_112()
2763                    .h_full()
2764                    .flex()
2765                    .flex_col()
2766                    .justify_end()
2767                    .gap_2()
2768                    .children(
2769                        self.notifications
2770                            .iter()
2771                            .map(|(_, _, notification)| notification.to_any()),
2772                    ),
2773            )
2774        }
2775    }
2776
2777    // RPC handlers
2778
2779    fn active_view_for_follower(
2780        &self,
2781        follower_project_id: Option<u64>,
2782        cx: &mut ViewContext<Self>,
2783    ) -> Option<proto::View> {
2784        let item = self.active_item(cx)?;
2785        let leader_id = self
2786            .pane_for(&*item)
2787            .and_then(|pane| self.leader_for_pane(&pane));
2788
2789        let item_handle = item.to_followable_item_handle(cx)?;
2790        let id = item_handle.remote_id(&self.app_state.client, cx)?;
2791        let variant = item_handle.to_state_proto(cx)?;
2792
2793        if item_handle.is_project_item(cx)
2794            && (follower_project_id.is_none()
2795                || follower_project_id != self.project.read(cx).remote_id())
2796        {
2797            return None;
2798        }
2799
2800        Some(proto::View {
2801            id: Some(id.to_proto()),
2802            leader_id,
2803            variant: Some(variant),
2804        })
2805    }
2806
2807    fn handle_follow(
2808        &mut self,
2809        follower_project_id: Option<u64>,
2810        cx: &mut ViewContext<Self>,
2811    ) -> proto::FollowResponse {
2812        let client = &self.app_state.client;
2813        let project_id = self.project.read(cx).remote_id();
2814
2815        let active_view = self.active_view_for_follower(follower_project_id, cx);
2816        let active_view_id = active_view.as_ref().and_then(|view| view.id.clone());
2817
2818        cx.notify();
2819
2820        proto::FollowResponse {
2821            active_view,
2822            // TODO: once v0.124.0 is retired we can stop sending these
2823            active_view_id,
2824            views: self
2825                .panes()
2826                .iter()
2827                .flat_map(|pane| {
2828                    let leader_id = self.leader_for_pane(pane);
2829                    pane.read(cx).items().filter_map({
2830                        let cx = &cx;
2831                        move |item| {
2832                            let item = item.to_followable_item_handle(cx)?;
2833
2834                            // If the item belongs to a particular project, then it should
2835                            // only be included if this project is shared, and the follower
2836                            // is in the project.
2837                            //
2838                            // Some items, like channel notes, do not belong to a particular
2839                            // project, so they should be included regardless of whether the
2840                            // current project is shared, or what project the follower is in.
2841                            if item.is_project_item(cx)
2842                                && (project_id.is_none() || project_id != follower_project_id)
2843                            {
2844                                return None;
2845                            }
2846
2847                            let id = item.remote_id(client, cx)?.to_proto();
2848                            let variant = item.to_state_proto(cx)?;
2849                            Some(proto::View {
2850                                id: Some(id),
2851                                leader_id,
2852                                variant: Some(variant),
2853                            })
2854                        }
2855                    })
2856                })
2857                .collect(),
2858        }
2859    }
2860
2861    fn handle_update_followers(
2862        &mut self,
2863        leader_id: PeerId,
2864        message: proto::UpdateFollowers,
2865        _cx: &mut ViewContext<Self>,
2866    ) {
2867        self.leader_updates_tx
2868            .unbounded_send((leader_id, message))
2869            .ok();
2870    }
2871
2872    async fn process_leader_update(
2873        this: &WeakView<Self>,
2874        leader_id: PeerId,
2875        update: proto::UpdateFollowers,
2876        cx: &mut AsyncWindowContext,
2877    ) -> Result<()> {
2878        match update.variant.ok_or_else(|| anyhow!("invalid update"))? {
2879            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
2880                let panes_missing_view = this.update(cx, |this, _| {
2881                    let mut panes = vec![];
2882                    for (pane, state) in &mut this.follower_states {
2883                        if state.leader_id != leader_id {
2884                            continue;
2885                        }
2886
2887                        state.active_view_id =
2888                            if let Some(active_view_id) = update_active_view.id.clone() {
2889                                Some(ViewId::from_proto(active_view_id)?)
2890                            } else {
2891                                None
2892                            };
2893
2894                        if state.active_view_id.is_some_and(|view_id| {
2895                            !state.items_by_leader_view_id.contains_key(&view_id)
2896                        }) {
2897                            panes.push(pane.clone())
2898                        }
2899                    }
2900                    anyhow::Ok(panes)
2901                })??;
2902
2903                if let Some(view) = update_active_view.view {
2904                    for pane in panes_missing_view {
2905                        Self::add_view_from_leader(this.clone(), leader_id, pane.clone(), &view, cx)
2906                            .await?
2907                    }
2908                }
2909            }
2910            proto::update_followers::Variant::UpdateView(update_view) => {
2911                let variant = update_view
2912                    .variant
2913                    .ok_or_else(|| anyhow!("missing update view variant"))?;
2914                let id = update_view
2915                    .id
2916                    .ok_or_else(|| anyhow!("missing update view id"))?;
2917                let mut tasks = Vec::new();
2918                this.update(cx, |this, cx| {
2919                    let project = this.project.clone();
2920                    for (_, state) in &mut this.follower_states {
2921                        if state.leader_id == leader_id {
2922                            let view_id = ViewId::from_proto(id.clone())?;
2923                            if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
2924                                tasks.push(item.apply_update_proto(&project, variant.clone(), cx));
2925                            }
2926                        }
2927                    }
2928                    anyhow::Ok(())
2929                })??;
2930                try_join_all(tasks).await.log_err();
2931            }
2932            proto::update_followers::Variant::CreateView(view) => {
2933                let panes = this.update(cx, |this, _| {
2934                    this.follower_states
2935                        .iter()
2936                        .filter_map(|(pane, state)| (state.leader_id == leader_id).then_some(pane))
2937                        .cloned()
2938                        .collect()
2939                })?;
2940                Self::add_views_from_leader(this.clone(), leader_id, panes, vec![view], cx).await?;
2941            }
2942        }
2943        this.update(cx, |this, cx| this.leader_updated(leader_id, cx))?;
2944        Ok(())
2945    }
2946
2947    async fn add_view_from_leader(
2948        this: WeakView<Self>,
2949        leader_id: PeerId,
2950        pane: View<Pane>,
2951        view: &proto::View,
2952        cx: &mut AsyncWindowContext,
2953    ) -> Result<()> {
2954        let this = this.upgrade().context("workspace dropped")?;
2955
2956        let item_builders = cx.update(|cx| {
2957            cx.default_global::<FollowableItemBuilders>()
2958                .values()
2959                .map(|b| b.0)
2960                .collect::<Vec<_>>()
2961        })?;
2962
2963        let Some(id) = view.id.clone() else {
2964            return Err(anyhow!("no id for view"));
2965        };
2966        let id = ViewId::from_proto(id)?;
2967
2968        let mut variant = view.variant.clone();
2969        if variant.is_none() {
2970            Err(anyhow!("missing view variant"))?;
2971        }
2972
2973        let task = item_builders.iter().find_map(|build_item| {
2974            cx.update(|cx| build_item(pane.clone(), this.clone(), id, &mut variant, cx))
2975                .log_err()
2976                .flatten()
2977        });
2978        let Some(task) = task else {
2979            return Err(anyhow!(
2980                "failed to construct view from leader (maybe from a different version of zed?)"
2981            ));
2982        };
2983
2984        let item = task.await?;
2985
2986        this.update(cx, |this, cx| {
2987            let state = this.follower_states.get_mut(&pane)?;
2988            item.set_leader_peer_id(Some(leader_id), cx);
2989            state.items_by_leader_view_id.insert(id, item);
2990
2991            Some(())
2992        })?;
2993
2994        Ok(())
2995    }
2996
2997    async fn add_views_from_leader(
2998        this: WeakView<Self>,
2999        leader_id: PeerId,
3000        panes: Vec<View<Pane>>,
3001        views: Vec<proto::View>,
3002        cx: &mut AsyncWindowContext,
3003    ) -> Result<()> {
3004        let this = this.upgrade().context("workspace dropped")?;
3005
3006        let item_builders = cx.update(|cx| {
3007            cx.default_global::<FollowableItemBuilders>()
3008                .values()
3009                .map(|b| b.0)
3010                .collect::<Vec<_>>()
3011        })?;
3012
3013        let mut item_tasks_by_pane = HashMap::default();
3014        for pane in panes {
3015            let mut item_tasks = Vec::new();
3016            let mut leader_view_ids = Vec::new();
3017            for view in &views {
3018                let Some(id) = &view.id else {
3019                    continue;
3020                };
3021                let id = ViewId::from_proto(id.clone())?;
3022                let mut variant = view.variant.clone();
3023                if variant.is_none() {
3024                    Err(anyhow!("missing view variant"))?;
3025                }
3026                for build_item in &item_builders {
3027                    let task = cx.update(|cx| {
3028                        build_item(pane.clone(), this.clone(), id, &mut variant, cx)
3029                    })?;
3030                    if let Some(task) = task {
3031                        item_tasks.push(task);
3032                        leader_view_ids.push(id);
3033                        break;
3034                    } else if variant.is_none() {
3035                        Err(anyhow!(
3036                            "failed to construct view from leader (maybe from a different version of zed?)"
3037                        ))?;
3038                    }
3039                }
3040            }
3041
3042            item_tasks_by_pane.insert(pane, (item_tasks, leader_view_ids));
3043        }
3044
3045        for (pane, (item_tasks, leader_view_ids)) in item_tasks_by_pane {
3046            let items = futures::future::try_join_all(item_tasks).await?;
3047            this.update(cx, |this, cx| {
3048                let state = this.follower_states.get_mut(&pane)?;
3049                for (id, item) in leader_view_ids.into_iter().zip(items) {
3050                    item.set_leader_peer_id(Some(leader_id), cx);
3051                    state.items_by_leader_view_id.insert(id, item);
3052                }
3053
3054                Some(())
3055            })?;
3056        }
3057        Ok(())
3058    }
3059
3060    pub fn update_active_view_for_followers(&mut self, cx: &mut WindowContext) {
3061        let mut is_project_item = true;
3062        let mut update = proto::UpdateActiveView::default();
3063        if cx.is_window_active() {
3064            if let Some(item) = self.active_item(cx) {
3065                if item.focus_handle(cx).contains_focused(cx) {
3066                    let leader_id = self
3067                        .pane_for(&*item)
3068                        .and_then(|pane| self.leader_for_pane(&pane));
3069
3070                    if let Some(item) = item.to_followable_item_handle(cx) {
3071                        let id = item
3072                            .remote_id(&self.app_state.client, cx)
3073                            .map(|id| id.to_proto());
3074
3075                        if let Some(id) = id.clone() {
3076                            if let Some(variant) = item.to_state_proto(cx) {
3077                                let view = Some(proto::View {
3078                                    id: Some(id.clone()),
3079                                    leader_id,
3080                                    variant: Some(variant),
3081                                });
3082
3083                                is_project_item = item.is_project_item(cx);
3084                                update = proto::UpdateActiveView {
3085                                    view,
3086                                    // TODO: once v0.124.0 is retired we can stop sending these
3087                                    id: Some(id),
3088                                    leader_id,
3089                                };
3090                            }
3091                        };
3092                    }
3093                }
3094            }
3095        }
3096
3097        if &update.id != &self.last_active_view_id {
3098            self.last_active_view_id = update.id.clone();
3099            self.update_followers(
3100                is_project_item,
3101                proto::update_followers::Variant::UpdateActiveView(update),
3102                cx,
3103            );
3104        }
3105    }
3106
3107    fn update_followers(
3108        &self,
3109        project_only: bool,
3110        update: proto::update_followers::Variant,
3111        cx: &mut WindowContext,
3112    ) -> Option<()> {
3113        // If this update only applies to for followers in the current project,
3114        // then skip it unless this project is shared. If it applies to all
3115        // followers, regardless of project, then set `project_id` to none,
3116        // indicating that it goes to all followers.
3117        let project_id = if project_only {
3118            Some(self.project.read(cx).remote_id()?)
3119        } else {
3120            None
3121        };
3122        self.app_state().workspace_store.update(cx, |store, cx| {
3123            store.update_followers(project_id, update, cx)
3124        })
3125    }
3126
3127    pub fn leader_for_pane(&self, pane: &View<Pane>) -> Option<PeerId> {
3128        self.follower_states.get(pane).map(|state| state.leader_id)
3129    }
3130
3131    fn leader_updated(&mut self, leader_id: PeerId, cx: &mut ViewContext<Self>) -> Option<()> {
3132        cx.notify();
3133
3134        let call = self.active_call()?;
3135        let room = call.read(cx).room()?.read(cx);
3136        let participant = room.remote_participant_for_peer_id(leader_id)?;
3137        let mut items_to_activate = Vec::new();
3138
3139        let leader_in_this_app;
3140        let leader_in_this_project;
3141        match participant.location {
3142            call::ParticipantLocation::SharedProject { project_id } => {
3143                leader_in_this_app = true;
3144                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
3145            }
3146            call::ParticipantLocation::UnsharedProject => {
3147                leader_in_this_app = true;
3148                leader_in_this_project = false;
3149            }
3150            call::ParticipantLocation::External => {
3151                leader_in_this_app = false;
3152                leader_in_this_project = false;
3153            }
3154        };
3155
3156        for (pane, state) in &self.follower_states {
3157            if state.leader_id != leader_id {
3158                continue;
3159            }
3160            if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
3161                if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
3162                    if leader_in_this_project || !item.is_project_item(cx) {
3163                        items_to_activate.push((pane.clone(), item.boxed_clone()));
3164                    }
3165                }
3166                continue;
3167            }
3168
3169            if let Some(shared_screen) = self.shared_screen_for_peer(leader_id, pane, cx) {
3170                items_to_activate.push((pane.clone(), Box::new(shared_screen)));
3171            }
3172        }
3173
3174        for (pane, item) in items_to_activate {
3175            let pane_was_focused = pane.read(cx).has_focus(cx);
3176            if let Some(index) = pane.update(cx, |pane, _| pane.index_for_item(item.as_ref())) {
3177                pane.update(cx, |pane, cx| pane.activate_item(index, false, false, cx));
3178            } else {
3179                pane.update(cx, |pane, cx| {
3180                    pane.add_item(item.boxed_clone(), false, false, None, cx)
3181                });
3182            }
3183
3184            if pane_was_focused {
3185                pane.update(cx, |pane, cx| pane.focus_active_item(cx));
3186            }
3187        }
3188
3189        None
3190    }
3191
3192    fn shared_screen_for_peer(
3193        &self,
3194        peer_id: PeerId,
3195        pane: &View<Pane>,
3196        cx: &mut WindowContext,
3197    ) -> Option<View<SharedScreen>> {
3198        let call = self.active_call()?;
3199        let room = call.read(cx).room()?.read(cx);
3200        let participant = room.remote_participant_for_peer_id(peer_id)?;
3201        let track = participant.video_tracks.values().next()?.clone();
3202        let user = participant.user.clone();
3203
3204        for item in pane.read(cx).items_of_type::<SharedScreen>() {
3205            if item.read(cx).peer_id == peer_id {
3206                return Some(item);
3207            }
3208        }
3209
3210        Some(cx.new_view(|cx| SharedScreen::new(&track, peer_id, user.clone(), cx)))
3211    }
3212
3213    pub fn on_window_activation_changed(&mut self, cx: &mut ViewContext<Self>) {
3214        if cx.is_window_active() {
3215            self.update_active_view_for_followers(cx);
3216            cx.background_executor()
3217                .spawn(persistence::DB.update_timestamp(self.database_id()))
3218                .detach();
3219        } else {
3220            for pane in &self.panes {
3221                pane.update(cx, |pane, cx| {
3222                    if let Some(item) = pane.active_item() {
3223                        item.workspace_deactivated(cx);
3224                    }
3225                    if matches!(
3226                        WorkspaceSettings::get_global(cx).autosave,
3227                        AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
3228                    ) {
3229                        for item in pane.items() {
3230                            Pane::autosave_item(item.as_ref(), self.project.clone(), cx)
3231                                .detach_and_log_err(cx);
3232                        }
3233                    }
3234                });
3235            }
3236        }
3237    }
3238
3239    fn active_call(&self) -> Option<&Model<ActiveCall>> {
3240        self.active_call.as_ref().map(|(call, _)| call)
3241    }
3242
3243    fn on_active_call_event(
3244        &mut self,
3245        _: Model<ActiveCall>,
3246        event: &call::room::Event,
3247        cx: &mut ViewContext<Self>,
3248    ) {
3249        match event {
3250            call::room::Event::ParticipantLocationChanged { participant_id }
3251            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
3252                self.leader_updated(*participant_id, cx);
3253            }
3254            _ => {}
3255        }
3256    }
3257
3258    pub fn database_id(&self) -> WorkspaceId {
3259        self.database_id
3260    }
3261
3262    fn location(&self, cx: &AppContext) -> Option<WorkspaceLocation> {
3263        let project = self.project().read(cx);
3264
3265        if project.is_local() {
3266            Some(
3267                project
3268                    .visible_worktrees(cx)
3269                    .map(|worktree| worktree.read(cx).abs_path())
3270                    .collect::<Vec<_>>()
3271                    .into(),
3272            )
3273        } else {
3274            None
3275        }
3276    }
3277
3278    fn remove_panes(&mut self, member: Member, cx: &mut ViewContext<Workspace>) {
3279        match member {
3280            Member::Axis(PaneAxis { members, .. }) => {
3281                for child in members.iter() {
3282                    self.remove_panes(child.clone(), cx)
3283                }
3284            }
3285            Member::Pane(pane) => {
3286                self.force_remove_pane(&pane, cx);
3287            }
3288        }
3289    }
3290
3291    fn force_remove_pane(&mut self, pane: &View<Pane>, cx: &mut ViewContext<Workspace>) {
3292        self.panes.retain(|p| p != pane);
3293        self.panes
3294            .last()
3295            .unwrap()
3296            .update(cx, |pane, cx| pane.focus(cx));
3297        if self.last_active_center_pane == Some(pane.downgrade()) {
3298            self.last_active_center_pane = None;
3299        }
3300        cx.notify();
3301    }
3302
3303    fn schedule_serialize(&mut self, cx: &mut ViewContext<Self>) {
3304        self._schedule_serialize = Some(cx.spawn(|this, mut cx| async move {
3305            cx.background_executor()
3306                .timer(Duration::from_millis(100))
3307                .await;
3308            this.update(&mut cx, |this, cx| this.serialize_workspace(cx))
3309                .log_err();
3310        }));
3311    }
3312
3313    fn serialize_workspace(&self, cx: &mut WindowContext) {
3314        fn serialize_pane_handle(pane_handle: &View<Pane>, cx: &WindowContext) -> SerializedPane {
3315            let (items, active) = {
3316                let pane = pane_handle.read(cx);
3317                let active_item_id = pane.active_item().map(|item| item.item_id());
3318                (
3319                    pane.items()
3320                        .filter_map(|item_handle| {
3321                            Some(SerializedItem {
3322                                kind: Arc::from(item_handle.serialized_item_kind()?),
3323                                item_id: item_handle.item_id().as_u64(),
3324                                active: Some(item_handle.item_id()) == active_item_id,
3325                            })
3326                        })
3327                        .collect::<Vec<_>>(),
3328                    pane.has_focus(cx),
3329                )
3330            };
3331
3332            SerializedPane::new(items, active)
3333        }
3334
3335        fn build_serialized_pane_group(
3336            pane_group: &Member,
3337            cx: &WindowContext,
3338        ) -> SerializedPaneGroup {
3339            match pane_group {
3340                Member::Axis(PaneAxis {
3341                    axis,
3342                    members,
3343                    flexes,
3344                    bounding_boxes: _,
3345                }) => SerializedPaneGroup::Group {
3346                    axis: SerializedAxis(*axis),
3347                    children: members
3348                        .iter()
3349                        .map(|member| build_serialized_pane_group(member, cx))
3350                        .collect::<Vec<_>>(),
3351                    flexes: Some(flexes.lock().clone()),
3352                },
3353                Member::Pane(pane_handle) => {
3354                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, cx))
3355                }
3356            }
3357        }
3358
3359        fn build_serialized_docks(this: &Workspace, cx: &mut WindowContext) -> DockStructure {
3360            let left_dock = this.left_dock.read(cx);
3361            let left_visible = left_dock.is_open();
3362            let left_active_panel = left_dock
3363                .visible_panel()
3364                .map(|panel| panel.persistent_name().to_string());
3365            let left_dock_zoom = left_dock
3366                .visible_panel()
3367                .map(|panel| panel.is_zoomed(cx))
3368                .unwrap_or(false);
3369
3370            let right_dock = this.right_dock.read(cx);
3371            let right_visible = right_dock.is_open();
3372            let right_active_panel = right_dock
3373                .visible_panel()
3374                .map(|panel| panel.persistent_name().to_string());
3375            let right_dock_zoom = right_dock
3376                .visible_panel()
3377                .map(|panel| panel.is_zoomed(cx))
3378                .unwrap_or(false);
3379
3380            let bottom_dock = this.bottom_dock.read(cx);
3381            let bottom_visible = bottom_dock.is_open();
3382            let bottom_active_panel = bottom_dock
3383                .visible_panel()
3384                .map(|panel| panel.persistent_name().to_string());
3385            let bottom_dock_zoom = bottom_dock
3386                .visible_panel()
3387                .map(|panel| panel.is_zoomed(cx))
3388                .unwrap_or(false);
3389
3390            DockStructure {
3391                left: DockData {
3392                    visible: left_visible,
3393                    active_panel: left_active_panel,
3394                    zoom: left_dock_zoom,
3395                },
3396                right: DockData {
3397                    visible: right_visible,
3398                    active_panel: right_active_panel,
3399                    zoom: right_dock_zoom,
3400                },
3401                bottom: DockData {
3402                    visible: bottom_visible,
3403                    active_panel: bottom_active_panel,
3404                    zoom: bottom_dock_zoom,
3405                },
3406            }
3407        }
3408
3409        if let Some(location) = self.location(cx) {
3410            // Load bearing special case:
3411            //  - with_local_workspace() relies on this to not have other stuff open
3412            //    when you open your log
3413            if !location.paths().is_empty() {
3414                let center_group = build_serialized_pane_group(&self.center.root, cx);
3415                let docks = build_serialized_docks(self, cx);
3416
3417                let serialized_workspace = SerializedWorkspace {
3418                    id: self.database_id,
3419                    location,
3420                    center_group,
3421                    bounds: Default::default(),
3422                    display: Default::default(),
3423                    docks,
3424                };
3425
3426                cx.spawn(|_| persistence::DB.save_workspace(serialized_workspace))
3427                    .detach();
3428            }
3429        }
3430    }
3431
3432    pub(crate) fn load_workspace(
3433        serialized_workspace: SerializedWorkspace,
3434        paths_to_open: Vec<Option<ProjectPath>>,
3435        cx: &mut ViewContext<Workspace>,
3436    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
3437        cx.spawn(|workspace, mut cx| async move {
3438            let project = workspace.update(&mut cx, |workspace, _| workspace.project().clone())?;
3439
3440            let mut center_group = None;
3441            let mut center_items = None;
3442
3443            // Traverse the splits tree and add to things
3444            if let Some((group, active_pane, items)) = serialized_workspace
3445                .center_group
3446                .deserialize(
3447                    &project,
3448                    serialized_workspace.id,
3449                    workspace.clone(),
3450                    &mut cx,
3451                )
3452                .await
3453            {
3454                center_items = Some(items);
3455                center_group = Some((group, active_pane))
3456            }
3457
3458            let mut items_by_project_path = cx.update(|cx| {
3459                center_items
3460                    .unwrap_or_default()
3461                    .into_iter()
3462                    .filter_map(|item| {
3463                        let item = item?;
3464                        let project_path = item.project_path(cx)?;
3465                        Some((project_path, item))
3466                    })
3467                    .collect::<HashMap<_, _>>()
3468            })?;
3469
3470            let opened_items = paths_to_open
3471                .into_iter()
3472                .map(|path_to_open| {
3473                    path_to_open
3474                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
3475                })
3476                .collect::<Vec<_>>();
3477
3478            // Remove old panes from workspace panes list
3479            workspace.update(&mut cx, |workspace, cx| {
3480                if let Some((center_group, active_pane)) = center_group {
3481                    workspace.remove_panes(workspace.center.root.clone(), cx);
3482
3483                    // Swap workspace center group
3484                    workspace.center = PaneGroup::with_root(center_group);
3485                    workspace.last_active_center_pane = active_pane.as_ref().map(|p| p.downgrade());
3486                    if let Some(active_pane) = active_pane {
3487                        workspace.active_pane = active_pane;
3488                        cx.focus_self();
3489                    } else {
3490                        workspace.active_pane = workspace.center.first_pane().clone();
3491                    }
3492                }
3493
3494                let docks = serialized_workspace.docks;
3495
3496                let right = docks.right.clone();
3497                workspace
3498                    .right_dock
3499                    .update(cx, |dock, _| dock.serialized_dock = Some(right));
3500                let left = docks.left.clone();
3501                workspace
3502                    .left_dock
3503                    .update(cx, |dock, _| dock.serialized_dock = Some(left));
3504                let bottom = docks.bottom.clone();
3505                workspace
3506                    .bottom_dock
3507                    .update(cx, |dock, _| dock.serialized_dock = Some(bottom));
3508
3509                cx.notify();
3510            })?;
3511
3512            // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
3513            workspace.update(&mut cx, |workspace, cx| workspace.serialize_workspace(cx))?;
3514
3515            Ok(opened_items)
3516        })
3517    }
3518
3519    fn actions(&self, div: Div, cx: &mut ViewContext<Self>) -> Div {
3520        self.add_workspace_actions_listeners(div, cx)
3521            .on_action(cx.listener(Self::close_inactive_items_and_panes))
3522            .on_action(cx.listener(Self::close_all_items_and_panes))
3523            .on_action(cx.listener(Self::save_all))
3524            .on_action(cx.listener(Self::send_keystrokes))
3525            .on_action(cx.listener(Self::add_folder_to_project))
3526            .on_action(cx.listener(Self::follow_next_collaborator))
3527            .on_action(cx.listener(|workspace, _: &Unfollow, cx| {
3528                let pane = workspace.active_pane().clone();
3529                workspace.unfollow(&pane, cx);
3530            }))
3531            .on_action(cx.listener(|workspace, action: &Save, cx| {
3532                workspace
3533                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), cx)
3534                    .detach_and_log_err(cx);
3535            }))
3536            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, cx| {
3537                workspace
3538                    .save_active_item(SaveIntent::SaveWithoutFormat, cx)
3539                    .detach_and_log_err(cx);
3540            }))
3541            .on_action(cx.listener(|workspace, _: &SaveAs, cx| {
3542                workspace
3543                    .save_active_item(SaveIntent::SaveAs, cx)
3544                    .detach_and_log_err(cx);
3545            }))
3546            .on_action(cx.listener(|workspace, _: &ActivatePreviousPane, cx| {
3547                workspace.activate_previous_pane(cx)
3548            }))
3549            .on_action(
3550                cx.listener(|workspace, _: &ActivateNextPane, cx| workspace.activate_next_pane(cx)),
3551            )
3552            .on_action(
3553                cx.listener(|workspace, action: &ActivatePaneInDirection, cx| {
3554                    workspace.activate_pane_in_direction(action.0, cx)
3555                }),
3556            )
3557            .on_action(cx.listener(|workspace, action: &SwapPaneInDirection, cx| {
3558                workspace.swap_pane_in_direction(action.0, cx)
3559            }))
3560            .on_action(cx.listener(|this, _: &ToggleLeftDock, cx| {
3561                this.toggle_dock(DockPosition::Left, cx);
3562            }))
3563            .on_action(
3564                cx.listener(|workspace: &mut Workspace, _: &ToggleRightDock, cx| {
3565                    workspace.toggle_dock(DockPosition::Right, cx);
3566                }),
3567            )
3568            .on_action(
3569                cx.listener(|workspace: &mut Workspace, _: &ToggleBottomDock, cx| {
3570                    workspace.toggle_dock(DockPosition::Bottom, cx);
3571                }),
3572            )
3573            .on_action(
3574                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, cx| {
3575                    workspace.close_all_docks(cx);
3576                }),
3577            )
3578            .on_action(cx.listener(Workspace::open))
3579            .on_action(cx.listener(Workspace::close_window))
3580            .on_action(cx.listener(Workspace::activate_pane_at_index))
3581            .on_action(
3582                cx.listener(|workspace: &mut Workspace, _: &ReopenClosedItem, cx| {
3583                    workspace.reopen_closed_item(cx).detach();
3584                }),
3585            )
3586    }
3587
3588    #[cfg(any(test, feature = "test-support"))]
3589    pub fn test_new(project: Model<Project>, cx: &mut ViewContext<Self>) -> Self {
3590        use node_runtime::FakeNodeRuntime;
3591
3592        let client = project.read(cx).client();
3593        let user_store = project.read(cx).user_store();
3594
3595        let workspace_store = cx.new_model(|cx| WorkspaceStore::new(client.clone(), cx));
3596        cx.activate_window();
3597        let app_state = Arc::new(AppState {
3598            languages: project.read(cx).languages().clone(),
3599            workspace_store,
3600            client,
3601            user_store,
3602            fs: project.read(cx).fs().clone(),
3603            build_window_options: |_, _, _| Default::default(),
3604            node_runtime: FakeNodeRuntime::new(),
3605        });
3606        let workspace = Self::new(0, project, app_state, cx);
3607        workspace.active_pane.update(cx, |pane, cx| pane.focus(cx));
3608        workspace
3609    }
3610
3611    pub fn register_action<A: Action>(
3612        &mut self,
3613        callback: impl Fn(&mut Self, &A, &mut ViewContext<Self>) + 'static,
3614    ) -> &mut Self {
3615        let callback = Arc::new(callback);
3616
3617        self.workspace_actions.push(Box::new(move |div, cx| {
3618            let callback = callback.clone();
3619            div.on_action(
3620                cx.listener(move |workspace, event, cx| (callback.clone())(workspace, event, cx)),
3621            )
3622        }));
3623        self
3624    }
3625
3626    fn add_workspace_actions_listeners(&self, div: Div, cx: &mut ViewContext<Self>) -> Div {
3627        let mut div = div
3628            .on_action(cx.listener(Self::close_inactive_items_and_panes))
3629            .on_action(cx.listener(Self::close_all_items_and_panes))
3630            .on_action(cx.listener(Self::add_folder_to_project))
3631            .on_action(cx.listener(Self::save_all))
3632            .on_action(cx.listener(Self::open));
3633        for action in self.workspace_actions.iter() {
3634            div = (action)(div, cx)
3635        }
3636        div
3637    }
3638
3639    pub fn has_active_modal(&self, cx: &WindowContext<'_>) -> bool {
3640        self.modal_layer.read(cx).has_active_modal()
3641    }
3642
3643    pub fn active_modal<V: ManagedView + 'static>(&mut self, cx: &AppContext) -> Option<View<V>> {
3644        self.modal_layer.read(cx).active_modal()
3645    }
3646
3647    pub fn toggle_modal<V: ModalView, B>(&mut self, cx: &mut WindowContext, build: B)
3648    where
3649        B: FnOnce(&mut ViewContext<V>) -> V,
3650    {
3651        self.modal_layer
3652            .update(cx, |modal_layer, cx| modal_layer.toggle_modal(cx, build))
3653    }
3654}
3655
3656fn window_bounds_env_override(cx: &AsyncAppContext) -> Option<WindowBounds> {
3657    let display_origin = cx
3658        .update(|cx| Some(cx.displays().first()?.bounds().origin))
3659        .ok()??;
3660    ZED_WINDOW_POSITION
3661        .zip(*ZED_WINDOW_SIZE)
3662        .map(|(position, size)| {
3663            WindowBounds::Fixed(Bounds {
3664                origin: display_origin + position,
3665                size,
3666            })
3667        })
3668}
3669
3670fn open_items(
3671    serialized_workspace: Option<SerializedWorkspace>,
3672    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
3673    app_state: Arc<AppState>,
3674    cx: &mut ViewContext<Workspace>,
3675) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> {
3676    let restored_items = serialized_workspace.map(|serialized_workspace| {
3677        Workspace::load_workspace(
3678            serialized_workspace,
3679            project_paths_to_open
3680                .iter()
3681                .map(|(_, project_path)| project_path)
3682                .cloned()
3683                .collect(),
3684            cx,
3685        )
3686    });
3687
3688    cx.spawn(|workspace, mut cx| async move {
3689        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
3690
3691        if let Some(restored_items) = restored_items {
3692            let restored_items = restored_items.await?;
3693
3694            let restored_project_paths = restored_items
3695                .iter()
3696                .filter_map(|item| {
3697                    cx.update(|cx| item.as_ref()?.project_path(cx))
3698                        .ok()
3699                        .flatten()
3700                })
3701                .collect::<HashSet<_>>();
3702
3703            for restored_item in restored_items {
3704                opened_items.push(restored_item.map(Ok));
3705            }
3706
3707            project_paths_to_open
3708                .iter_mut()
3709                .for_each(|(_, project_path)| {
3710                    if let Some(project_path_to_open) = project_path {
3711                        if restored_project_paths.contains(project_path_to_open) {
3712                            *project_path = None;
3713                        }
3714                    }
3715                });
3716        } else {
3717            for _ in 0..project_paths_to_open.len() {
3718                opened_items.push(None);
3719            }
3720        }
3721        assert!(opened_items.len() == project_paths_to_open.len());
3722
3723        let tasks =
3724            project_paths_to_open
3725                .into_iter()
3726                .enumerate()
3727                .map(|(ix, (abs_path, project_path))| {
3728                    let workspace = workspace.clone();
3729                    cx.spawn(|mut cx| {
3730                        let fs = app_state.fs.clone();
3731                        async move {
3732                            let file_project_path = project_path?;
3733                            if fs.is_file(&abs_path).await {
3734                                Some((
3735                                    ix,
3736                                    workspace
3737                                        .update(&mut cx, |workspace, cx| {
3738                                            workspace.open_path(file_project_path, None, true, cx)
3739                                        })
3740                                        .log_err()?
3741                                        .await,
3742                                ))
3743                            } else {
3744                                None
3745                            }
3746                        }
3747                    })
3748                });
3749
3750        let tasks = tasks.collect::<Vec<_>>();
3751
3752        let tasks = futures::future::join_all(tasks);
3753        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
3754            opened_items[ix] = Some(path_open_result);
3755        }
3756
3757        Ok(opened_items)
3758    })
3759}
3760
3761enum ActivateInDirectionTarget {
3762    Pane(View<Pane>),
3763    Dock(View<Dock>),
3764}
3765
3766fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncAppContext) {
3767    const REPORT_ISSUE_URL: &str = "https://github.com/zed-industries/zed/issues/new?assignees=&labels=defect%2Ctriage&template=2_bug_report.yml";
3768
3769    workspace
3770        .update(cx, |workspace, cx| {
3771            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
3772                workspace.show_notification_once(0, cx, |cx| {
3773                    cx.new_view(|_| {
3774                        MessageNotification::new("Failed to load the database file.")
3775                            .with_click_message("Click to let us know about this error")
3776                            .on_click(|cx| cx.open_url(REPORT_ISSUE_URL))
3777                    })
3778                });
3779            }
3780        })
3781        .log_err();
3782}
3783
3784impl FocusableView for Workspace {
3785    fn focus_handle(&self, cx: &AppContext) -> FocusHandle {
3786        self.active_pane.focus_handle(cx)
3787    }
3788}
3789
3790#[derive(Clone, Render)]
3791struct DraggedDock(DockPosition);
3792
3793impl Render for Workspace {
3794    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
3795        let mut context = KeyContext::default();
3796        context.add("Workspace");
3797
3798        let (ui_font, ui_font_size) = {
3799            let theme_settings = ThemeSettings::get_global(cx);
3800            (
3801                theme_settings.ui_font.family.clone(),
3802                theme_settings.ui_font_size,
3803            )
3804        };
3805
3806        let theme = cx.theme().clone();
3807        let colors = theme.colors();
3808        cx.set_rem_size(ui_font_size);
3809
3810        self.actions(div(), cx)
3811            .key_context(context)
3812            .relative()
3813            .size_full()
3814            .flex()
3815            .flex_col()
3816            .font(ui_font)
3817            .gap_0()
3818            .justify_start()
3819            .items_start()
3820            .text_color(colors.text)
3821            .bg(colors.background)
3822            .border()
3823            .border_color(colors.border)
3824            .children(self.titlebar_item.clone())
3825            .child(
3826                div()
3827                    .id("workspace")
3828                    .relative()
3829                    .flex_1()
3830                    .w_full()
3831                    .flex()
3832                    .flex_col()
3833                    .overflow_hidden()
3834                    .border_t()
3835                    .border_b()
3836                    .border_color(colors.border)
3837                    .child(
3838                        canvas({
3839                            let this = cx.view().clone();
3840                            move |bounds, cx| {
3841                                this.update(cx, |this, _cx| {
3842                                    this.bounds = *bounds;
3843                                })
3844                            }
3845                        })
3846                        .absolute()
3847                        .size_full(),
3848                    )
3849                    .on_drag_move(
3850                        cx.listener(|workspace, e: &DragMoveEvent<DraggedDock>, cx| {
3851                            match e.drag(cx).0 {
3852                                DockPosition::Left => {
3853                                    let size = workspace.bounds.left() + e.event.position.x;
3854                                    workspace.left_dock.update(cx, |left_dock, cx| {
3855                                        left_dock.resize_active_panel(Some(size), cx);
3856                                    });
3857                                }
3858                                DockPosition::Right => {
3859                                    let size = workspace.bounds.right() - e.event.position.x;
3860                                    workspace.right_dock.update(cx, |right_dock, cx| {
3861                                        right_dock.resize_active_panel(Some(size), cx);
3862                                    });
3863                                }
3864                                DockPosition::Bottom => {
3865                                    let size = workspace.bounds.bottom() - e.event.position.y;
3866                                    workspace.bottom_dock.update(cx, |bottom_dock, cx| {
3867                                        bottom_dock.resize_active_panel(Some(size), cx);
3868                                    });
3869                                }
3870                            }
3871                        }),
3872                    )
3873                    .child(self.modal_layer.clone())
3874                    .child(
3875                        div()
3876                            .flex()
3877                            .flex_row()
3878                            .h_full()
3879                            // Left Dock
3880                            .children(self.zoomed_position.ne(&Some(DockPosition::Left)).then(
3881                                || {
3882                                    div()
3883                                        .flex()
3884                                        .flex_none()
3885                                        .overflow_hidden()
3886                                        .child(self.left_dock.clone())
3887                                },
3888                            ))
3889                            // Panes
3890                            .child(
3891                                div()
3892                                    .flex()
3893                                    .flex_col()
3894                                    .flex_1()
3895                                    .overflow_hidden()
3896                                    .child(self.center.render(
3897                                        &self.project,
3898                                        &self.follower_states,
3899                                        self.active_call(),
3900                                        &self.active_pane,
3901                                        self.zoomed.as_ref(),
3902                                        &self.app_state,
3903                                        cx,
3904                                    ))
3905                                    .children(
3906                                        self.zoomed_position
3907                                            .ne(&Some(DockPosition::Bottom))
3908                                            .then(|| self.bottom_dock.clone()),
3909                                    ),
3910                            )
3911                            // Right Dock
3912                            .children(self.zoomed_position.ne(&Some(DockPosition::Right)).then(
3913                                || {
3914                                    div()
3915                                        .flex()
3916                                        .flex_none()
3917                                        .overflow_hidden()
3918                                        .child(self.right_dock.clone())
3919                                },
3920                            )),
3921                    )
3922                    .children(self.render_notifications(cx))
3923                    .children(self.zoomed.as_ref().and_then(|view| {
3924                        let zoomed_view = view.upgrade()?;
3925                        let div = div()
3926                            .z_index(1)
3927                            .absolute()
3928                            .overflow_hidden()
3929                            .border_color(colors.border)
3930                            .bg(colors.background)
3931                            .child(zoomed_view)
3932                            .inset_0()
3933                            .shadow_lg();
3934
3935                        Some(match self.zoomed_position {
3936                            Some(DockPosition::Left) => div.right_2().border_r(),
3937                            Some(DockPosition::Right) => div.left_2().border_l(),
3938                            Some(DockPosition::Bottom) => div.top_2().border_t(),
3939                            None => div.top_2().bottom_2().left_2().right_2().border(),
3940                        })
3941                    })),
3942            )
3943            .child(self.status_bar.clone())
3944            .children(if self.project.read(cx).is_disconnected() {
3945                Some(DisconnectedOverlay)
3946            } else {
3947                None
3948            })
3949    }
3950}
3951
3952impl WorkspaceStore {
3953    pub fn new(client: Arc<Client>, cx: &mut ModelContext<Self>) -> Self {
3954        Self {
3955            workspaces: Default::default(),
3956            _subscriptions: vec![
3957                client.add_request_handler(cx.weak_model(), Self::handle_follow),
3958                client.add_message_handler(cx.weak_model(), Self::handle_update_followers),
3959            ],
3960            client,
3961        }
3962    }
3963
3964    pub fn update_followers(
3965        &self,
3966        project_id: Option<u64>,
3967        update: proto::update_followers::Variant,
3968        cx: &AppContext,
3969    ) -> Option<()> {
3970        let active_call = ActiveCall::try_global(cx)?;
3971        let room_id = active_call.read(cx).room()?.read(cx).id();
3972        self.client
3973            .send(proto::UpdateFollowers {
3974                room_id,
3975                project_id,
3976                variant: Some(update),
3977            })
3978            .log_err()
3979    }
3980
3981    pub async fn handle_follow(
3982        this: Model<Self>,
3983        envelope: TypedEnvelope<proto::Follow>,
3984        _: Arc<Client>,
3985        mut cx: AsyncAppContext,
3986    ) -> Result<proto::FollowResponse> {
3987        this.update(&mut cx, |this, cx| {
3988            let follower = Follower {
3989                project_id: envelope.payload.project_id,
3990                peer_id: envelope.original_sender_id()?,
3991            };
3992
3993            let mut response = proto::FollowResponse::default();
3994            this.workspaces.retain(|workspace| {
3995                workspace
3996                    .update(cx, |workspace, cx| {
3997                        let handler_response = workspace.handle_follow(follower.project_id, cx);
3998                        if response.views.is_empty() {
3999                            response.views = handler_response.views;
4000                        } else {
4001                            response.views.extend_from_slice(&handler_response.views);
4002                        }
4003
4004                        if let Some(active_view_id) = handler_response.active_view_id.clone() {
4005                            if response.active_view_id.is_none()
4006                                || workspace.project.read(cx).remote_id() == follower.project_id
4007                            {
4008                                response.active_view_id = Some(active_view_id);
4009                            }
4010                        }
4011
4012                        if let Some(active_view) = handler_response.active_view.clone() {
4013                            if response.active_view_id.is_none()
4014                                || workspace.project.read(cx).remote_id() == follower.project_id
4015                            {
4016                                response.active_view = Some(active_view)
4017                            }
4018                        }
4019                    })
4020                    .is_ok()
4021            });
4022
4023            Ok(response)
4024        })?
4025    }
4026
4027    async fn handle_update_followers(
4028        this: Model<Self>,
4029        envelope: TypedEnvelope<proto::UpdateFollowers>,
4030        _: Arc<Client>,
4031        mut cx: AsyncAppContext,
4032    ) -> Result<()> {
4033        let leader_id = envelope.original_sender_id()?;
4034        let update = envelope.payload;
4035
4036        this.update(&mut cx, |this, cx| {
4037            this.workspaces.retain(|workspace| {
4038                workspace
4039                    .update(cx, |workspace, cx| {
4040                        let project_id = workspace.project.read(cx).remote_id();
4041                        if update.project_id != project_id && update.project_id.is_some() {
4042                            return;
4043                        }
4044                        workspace.handle_update_followers(leader_id, update.clone(), cx);
4045                    })
4046                    .is_ok()
4047            });
4048            Ok(())
4049        })?
4050    }
4051}
4052
4053impl ViewId {
4054    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
4055        Ok(Self {
4056            creator: message
4057                .creator
4058                .ok_or_else(|| anyhow!("creator is missing"))?,
4059            id: message.id,
4060        })
4061    }
4062
4063    pub(crate) fn to_proto(&self) -> proto::ViewId {
4064        proto::ViewId {
4065            creator: Some(self.creator),
4066            id: self.id,
4067        }
4068    }
4069}
4070
4071pub trait WorkspaceHandle {
4072    fn file_project_paths(&self, cx: &AppContext) -> Vec<ProjectPath>;
4073}
4074
4075impl WorkspaceHandle for View<Workspace> {
4076    fn file_project_paths(&self, cx: &AppContext) -> Vec<ProjectPath> {
4077        self.read(cx)
4078            .worktrees(cx)
4079            .flat_map(|worktree| {
4080                let worktree_id = worktree.read(cx).id();
4081                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
4082                    worktree_id,
4083                    path: f.path.clone(),
4084                })
4085            })
4086            .collect::<Vec<_>>()
4087    }
4088}
4089
4090impl std::fmt::Debug for OpenPaths {
4091    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
4092        f.debug_struct("OpenPaths")
4093            .field("paths", &self.paths)
4094            .finish()
4095    }
4096}
4097
4098pub fn activate_workspace_for_project(
4099    cx: &mut AppContext,
4100    predicate: impl Fn(&Project, &AppContext) -> bool + Send + 'static,
4101) -> Option<WindowHandle<Workspace>> {
4102    for window in cx.windows() {
4103        let Some(workspace) = window.downcast::<Workspace>() else {
4104            continue;
4105        };
4106
4107        let predicate = workspace
4108            .update(cx, |workspace, cx| {
4109                let project = workspace.project.read(cx);
4110                if predicate(project, cx) {
4111                    cx.activate_window();
4112                    true
4113                } else {
4114                    false
4115                }
4116            })
4117            .log_err()
4118            .unwrap_or(false);
4119
4120        if predicate {
4121            return Some(workspace);
4122        }
4123    }
4124
4125    None
4126}
4127
4128pub async fn last_opened_workspace_paths() -> Option<WorkspaceLocation> {
4129    DB.last_workspace().await.log_err().flatten()
4130}
4131
4132actions!(collab, [OpenChannelNotes]);
4133
4134async fn join_channel_internal(
4135    channel_id: ChannelId,
4136    app_state: &Arc<AppState>,
4137    requesting_window: Option<WindowHandle<Workspace>>,
4138    active_call: &Model<ActiveCall>,
4139    cx: &mut AsyncAppContext,
4140) -> Result<bool> {
4141    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
4142        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
4143            return (false, None);
4144        };
4145
4146        let already_in_channel = room.channel_id() == Some(channel_id);
4147        let should_prompt = room.is_sharing_project()
4148            && room.remote_participants().len() > 0
4149            && !already_in_channel;
4150        let open_room = if already_in_channel {
4151            active_call.room().cloned()
4152        } else {
4153            None
4154        };
4155        (should_prompt, open_room)
4156    })?;
4157
4158    if let Some(room) = open_room {
4159        let task = room.update(cx, |room, cx| {
4160            if let Some((project, host)) = room.most_active_project(cx) {
4161                return Some(join_in_room_project(project, host, app_state.clone(), cx));
4162            }
4163
4164            None
4165        })?;
4166        if let Some(task) = task {
4167            task.await?;
4168        }
4169        return anyhow::Ok(true);
4170    }
4171
4172    if should_prompt {
4173        if let Some(workspace) = requesting_window {
4174            let answer = workspace
4175                .update(cx, |_, cx| {
4176                    cx.prompt(
4177                        PromptLevel::Warning,
4178                        "Do you want to switch channels?",
4179                        Some("Leaving this call will unshare your current project."),
4180                        &["Yes, Join Channel", "Cancel"],
4181                    )
4182                })?
4183                .await;
4184
4185            if answer == Ok(1) {
4186                return Ok(false);
4187            }
4188        } else {
4189            return Ok(false); // unreachable!() hopefully
4190        }
4191    }
4192
4193    let client = cx.update(|cx| active_call.read(cx).client())?;
4194
4195    let mut client_status = client.status();
4196
4197    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
4198    'outer: loop {
4199        let Some(status) = client_status.recv().await else {
4200            return Err(anyhow!("error connecting"));
4201        };
4202
4203        match status {
4204            Status::Connecting
4205            | Status::Authenticating
4206            | Status::Reconnecting
4207            | Status::Reauthenticating => continue,
4208            Status::Connected { .. } => break 'outer,
4209            Status::SignedOut => return Err(ErrorCode::SignedOut.into()),
4210            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
4211            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
4212                return Err(ErrorCode::Disconnected.into());
4213            }
4214        }
4215    }
4216
4217    let room = active_call
4218        .update(cx, |active_call, cx| {
4219            active_call.join_channel(channel_id, cx)
4220        })?
4221        .await?;
4222
4223    let Some(room) = room else {
4224        return anyhow::Ok(true);
4225    };
4226
4227    room.update(cx, |room, _| room.room_update_completed())?
4228        .await;
4229
4230    let task = room.update(cx, |room, cx| {
4231        if let Some((project, host)) = room.most_active_project(cx) {
4232            return Some(join_in_room_project(project, host, app_state.clone(), cx));
4233        }
4234
4235        // if you are the first to join a channel, share your project
4236        if room.remote_participants().len() == 0 && !room.local_participant_is_guest() {
4237            if let Some(workspace) = requesting_window {
4238                let project = workspace.update(cx, |workspace, cx| {
4239                    if !CallSettings::get_global(cx).share_on_join {
4240                        return None;
4241                    }
4242                    let project = workspace.project.read(cx);
4243                    if project.is_local()
4244                        && project.visible_worktrees(cx).any(|tree| {
4245                            tree.read(cx)
4246                                .root_entry()
4247                                .map_or(false, |entry| entry.is_dir())
4248                        })
4249                    {
4250                        Some(workspace.project.clone())
4251                    } else {
4252                        None
4253                    }
4254                });
4255                if let Ok(Some(project)) = project {
4256                    return Some(cx.spawn(|room, mut cx| async move {
4257                        room.update(&mut cx, |room, cx| room.share_project(project, cx))?
4258                            .await?;
4259                        Ok(())
4260                    }));
4261                }
4262            }
4263        }
4264
4265        None
4266    })?;
4267    if let Some(task) = task {
4268        task.await?;
4269        return anyhow::Ok(true);
4270    }
4271    anyhow::Ok(false)
4272}
4273
4274pub fn join_channel(
4275    channel_id: ChannelId,
4276    app_state: Arc<AppState>,
4277    requesting_window: Option<WindowHandle<Workspace>>,
4278    cx: &mut AppContext,
4279) -> Task<Result<()>> {
4280    let active_call = ActiveCall::global(cx);
4281    cx.spawn(|mut cx| async move {
4282        let result = join_channel_internal(
4283            channel_id,
4284            &app_state,
4285            requesting_window,
4286            &active_call,
4287            &mut cx,
4288        )
4289            .await;
4290
4291        // join channel succeeded, and opened a window
4292        if matches!(result, Ok(true)) {
4293            return anyhow::Ok(());
4294        }
4295
4296        // find an existing workspace to focus and show call controls
4297        let mut active_window =
4298            requesting_window.or_else(|| activate_any_workspace_window(&mut cx));
4299        if active_window.is_none() {
4300            // no open workspaces, make one to show the error in (blergh)
4301            let (window_handle, _) = cx
4302                .update(|cx| {
4303                    Workspace::new_local(vec![], app_state.clone(), requesting_window, cx)
4304                })?
4305                .await?;
4306
4307            if result.is_ok() {
4308                cx.update(|cx| {
4309                    cx.dispatch_action(&OpenChannelNotes);
4310                }).log_err();
4311            }
4312
4313            active_window = Some(window_handle);
4314        }
4315
4316        if let Err(err) = result {
4317            log::error!("failed to join channel: {}", err);
4318            if let Some(active_window) = active_window {
4319                active_window
4320                    .update(&mut cx, |_, cx| {
4321                        let detail: SharedString = match err.error_code() {
4322                            ErrorCode::SignedOut => {
4323                                "Please sign in to continue.".into()
4324                            }
4325                            ErrorCode::UpgradeRequired => {
4326                                "Your are running an unsupported version of Zed. Please update to continue.".into()
4327                            }
4328                            ErrorCode::NoSuchChannel => {
4329                                "No matching channel was found. Please check the link and try again.".into()
4330                            }
4331                            ErrorCode::Forbidden => {
4332                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
4333                            }
4334                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
4335                            _ => format!("{}\n\nPlease try again.", err).into(),
4336                        };
4337                        cx.prompt(
4338                            PromptLevel::Critical,
4339                            "Failed to join channel",
4340                            Some(&detail),
4341                            &["Ok"],
4342                        )
4343                    })?
4344                    .await
4345                    .ok();
4346            }
4347        }
4348
4349        // return ok, we showed the error to the user.
4350        return anyhow::Ok(());
4351    })
4352}
4353
4354pub async fn get_any_active_workspace(
4355    app_state: Arc<AppState>,
4356    mut cx: AsyncAppContext,
4357) -> anyhow::Result<WindowHandle<Workspace>> {
4358    // find an existing workspace to focus and show call controls
4359    let active_window = activate_any_workspace_window(&mut cx);
4360    if active_window.is_none() {
4361        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, cx))?
4362            .await?;
4363    }
4364    activate_any_workspace_window(&mut cx).context("could not open zed")
4365}
4366
4367fn activate_any_workspace_window(cx: &mut AsyncAppContext) -> Option<WindowHandle<Workspace>> {
4368    cx.update(|cx| {
4369        for window in cx.windows() {
4370            if let Some(workspace_window) = window.downcast::<Workspace>() {
4371                workspace_window
4372                    .update(cx, |_, cx| cx.activate_window())
4373                    .ok();
4374                return Some(workspace_window);
4375            }
4376        }
4377        None
4378    })
4379    .ok()
4380    .flatten()
4381}
4382
4383#[allow(clippy::type_complexity)]
4384pub fn open_paths(
4385    abs_paths: &[PathBuf],
4386    app_state: &Arc<AppState>,
4387    requesting_window: Option<WindowHandle<Workspace>>,
4388    cx: &mut AppContext,
4389) -> Task<
4390    anyhow::Result<(
4391        WindowHandle<Workspace>,
4392        Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>,
4393    )>,
4394> {
4395    let app_state = app_state.clone();
4396    let abs_paths = abs_paths.to_vec();
4397    // Open paths in existing workspace if possible
4398    let existing = activate_workspace_for_project(cx, {
4399        let abs_paths = abs_paths.clone();
4400        move |project, cx| project.contains_paths(&abs_paths, cx)
4401    });
4402    cx.spawn(move |mut cx| async move {
4403        if let Some(existing) = existing {
4404            Ok((
4405                existing,
4406                existing
4407                    .update(&mut cx, |workspace, cx| {
4408                        workspace.open_paths(abs_paths, OpenVisible::All, None, cx)
4409                    })?
4410                    .await,
4411            ))
4412        } else {
4413            cx.update(move |cx| {
4414                Workspace::new_local(abs_paths, app_state.clone(), requesting_window, cx)
4415            })?
4416            .await
4417        }
4418    })
4419}
4420
4421pub fn open_new(
4422    app_state: &Arc<AppState>,
4423    cx: &mut AppContext,
4424    init: impl FnOnce(&mut Workspace, &mut ViewContext<Workspace>) + 'static + Send,
4425) -> Task<()> {
4426    let task = Workspace::new_local(Vec::new(), app_state.clone(), None, cx);
4427    cx.spawn(|mut cx| async move {
4428        if let Some((workspace, opened_paths)) = task.await.log_err() {
4429            workspace
4430                .update(&mut cx, |workspace, cx| {
4431                    if opened_paths.is_empty() {
4432                        init(workspace, cx)
4433                    }
4434                })
4435                .log_err();
4436        }
4437    })
4438}
4439
4440pub fn create_and_open_local_file(
4441    path: &'static Path,
4442    cx: &mut ViewContext<Workspace>,
4443    default_content: impl 'static + Send + FnOnce() -> Rope,
4444) -> Task<Result<Box<dyn ItemHandle>>> {
4445    cx.spawn(|workspace, mut cx| async move {
4446        let fs = workspace.update(&mut cx, |workspace, _| workspace.app_state().fs.clone())?;
4447        if !fs.is_file(path).await {
4448            fs.create_file(path, Default::default()).await?;
4449            fs.save(path, &default_content(), Default::default())
4450                .await?;
4451        }
4452
4453        let mut items = workspace
4454            .update(&mut cx, |workspace, cx| {
4455                workspace.with_local_workspace(cx, |workspace, cx| {
4456                    workspace.open_paths(vec![path.to_path_buf()], OpenVisible::None, None, cx)
4457                })
4458            })?
4459            .await?
4460            .await;
4461
4462        let item = items.pop().flatten();
4463        item.ok_or_else(|| anyhow!("path {path:?} is not a file"))?
4464    })
4465}
4466
4467pub fn join_hosted_project(
4468    hosted_project_id: HostedProjectId,
4469    app_state: Arc<AppState>,
4470    cx: &mut AppContext,
4471) -> Task<Result<()>> {
4472    cx.spawn(|mut cx| async move {
4473        let existing_window = cx.update(|cx| {
4474            cx.windows().into_iter().find_map(|window| {
4475                let workspace = window.downcast::<Workspace>()?;
4476                workspace
4477                    .read(cx)
4478                    .is_ok_and(|workspace| {
4479                        workspace.project().read(cx).hosted_project_id() == Some(hosted_project_id)
4480                    })
4481                    .then(|| workspace)
4482            })
4483        })?;
4484
4485        let workspace = if let Some(existing_window) = existing_window {
4486            existing_window
4487        } else {
4488            let project = Project::hosted(
4489                hosted_project_id,
4490                app_state.user_store.clone(),
4491                app_state.client.clone(),
4492                app_state.languages.clone(),
4493                app_state.fs.clone(),
4494                cx.clone(),
4495            )
4496            .await?;
4497
4498            let window_bounds_override = window_bounds_env_override(&cx);
4499            cx.update(|cx| {
4500                let options = (app_state.build_window_options)(window_bounds_override, None, cx);
4501                cx.open_window(options, |cx| {
4502                    cx.new_view(|cx| Workspace::new(0, project, app_state.clone(), cx))
4503                })
4504            })?
4505        };
4506
4507        workspace.update(&mut cx, |_, cx| {
4508            cx.activate(true);
4509            cx.activate_window();
4510        })?;
4511
4512        Ok(())
4513    })
4514}
4515
4516pub fn join_in_room_project(
4517    project_id: u64,
4518    follow_user_id: u64,
4519    app_state: Arc<AppState>,
4520    cx: &mut AppContext,
4521) -> Task<Result<()>> {
4522    let windows = cx.windows();
4523    cx.spawn(|mut cx| async move {
4524        let existing_workspace = windows.into_iter().find_map(|window| {
4525            window.downcast::<Workspace>().and_then(|window| {
4526                window
4527                    .update(&mut cx, |workspace, cx| {
4528                        if workspace.project().read(cx).remote_id() == Some(project_id) {
4529                            Some(window)
4530                        } else {
4531                            None
4532                        }
4533                    })
4534                    .unwrap_or(None)
4535            })
4536        });
4537
4538        let workspace = if let Some(existing_workspace) = existing_workspace {
4539            existing_workspace
4540        } else {
4541            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
4542            let room = active_call
4543                .read_with(&cx, |call, _| call.room().cloned())?
4544                .ok_or_else(|| anyhow!("not in a call"))?;
4545            let project = room
4546                .update(&mut cx, |room, cx| {
4547                    room.join_project(
4548                        project_id,
4549                        app_state.languages.clone(),
4550                        app_state.fs.clone(),
4551                        cx,
4552                    )
4553                })?
4554                .await?;
4555
4556            let window_bounds_override = window_bounds_env_override(&cx);
4557            cx.update(|cx| {
4558                let options = (app_state.build_window_options)(window_bounds_override, None, cx);
4559                cx.open_window(options, |cx| {
4560                    cx.new_view(|cx| Workspace::new(0, project, app_state.clone(), cx))
4561                })
4562            })?
4563        };
4564
4565        workspace.update(&mut cx, |workspace, cx| {
4566            cx.activate(true);
4567            cx.activate_window();
4568
4569            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
4570                let follow_peer_id = room
4571                    .read(cx)
4572                    .remote_participants()
4573                    .iter()
4574                    .find(|(_, participant)| participant.user.id == follow_user_id)
4575                    .map(|(_, p)| p.peer_id)
4576                    .or_else(|| {
4577                        // If we couldn't follow the given user, follow the host instead.
4578                        let collaborator = workspace
4579                            .project()
4580                            .read(cx)
4581                            .collaborators()
4582                            .values()
4583                            .find(|collaborator| collaborator.replica_id == 0)?;
4584                        Some(collaborator.peer_id)
4585                    });
4586
4587                if let Some(follow_peer_id) = follow_peer_id {
4588                    workspace.follow(follow_peer_id, cx);
4589                }
4590            }
4591        })?;
4592
4593        anyhow::Ok(())
4594    })
4595}
4596
4597pub fn restart(_: &Restart, cx: &mut AppContext) {
4598    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
4599    let mut workspace_windows = cx
4600        .windows()
4601        .into_iter()
4602        .filter_map(|window| window.downcast::<Workspace>())
4603        .collect::<Vec<_>>();
4604
4605    // If multiple windows have unsaved changes, and need a save prompt,
4606    // prompt in the active window before switching to a different window.
4607    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
4608
4609    let mut prompt = None;
4610    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
4611        prompt = window
4612            .update(cx, |_, cx| {
4613                cx.prompt(
4614                    PromptLevel::Info,
4615                    "Are you sure you want to restart?",
4616                    None,
4617                    &["Restart", "Cancel"],
4618                )
4619            })
4620            .ok();
4621    }
4622
4623    cx.spawn(|mut cx| async move {
4624        if let Some(prompt) = prompt {
4625            let answer = prompt.await?;
4626            if answer != 0 {
4627                return Ok(());
4628            }
4629        }
4630
4631        // If the user cancels any save prompt, then keep the app open.
4632        for window in workspace_windows {
4633            if let Ok(should_close) = window.update(&mut cx, |workspace, cx| {
4634                workspace.prepare_to_close(true, cx)
4635            }) {
4636                if !should_close.await? {
4637                    return Ok(());
4638                }
4639            }
4640        }
4641
4642        cx.update(|cx| cx.restart())
4643    })
4644    .detach_and_log_err(cx);
4645}
4646
4647fn parse_pixel_position_env_var(value: &str) -> Option<Point<GlobalPixels>> {
4648    let mut parts = value.split(',');
4649    let x: usize = parts.next()?.parse().ok()?;
4650    let y: usize = parts.next()?.parse().ok()?;
4651    Some(point((x as f64).into(), (y as f64).into()))
4652}
4653
4654fn parse_pixel_size_env_var(value: &str) -> Option<Size<GlobalPixels>> {
4655    let mut parts = value.split(',');
4656    let width: usize = parts.next()?.parse().ok()?;
4657    let height: usize = parts.next()?.parse().ok()?;
4658    Some(size((width as f64).into(), (height as f64).into()))
4659}
4660
4661pub fn titlebar_height(cx: &mut WindowContext) -> Pixels {
4662    (1.75 * cx.rem_size()).max(px(32.))
4663}
4664
4665struct DisconnectedOverlay;
4666
4667impl Element for DisconnectedOverlay {
4668    type State = AnyElement;
4669
4670    fn request_layout(
4671        &mut self,
4672        _: Option<Self::State>,
4673        cx: &mut ElementContext,
4674    ) -> (LayoutId, Self::State) {
4675        let mut background = cx.theme().colors().elevated_surface_background;
4676        background.fade_out(0.2);
4677        let mut overlay = div()
4678            .bg(background)
4679            .absolute()
4680            .left_0()
4681            .top(titlebar_height(cx))
4682            .size_full()
4683            .flex()
4684            .items_center()
4685            .justify_center()
4686            .capture_any_mouse_down(|_, cx| cx.stop_propagation())
4687            .capture_any_mouse_up(|_, cx| cx.stop_propagation())
4688            .child(Label::new(
4689                "Your connection to the remote project has been lost.",
4690            ))
4691            .into_any();
4692        (overlay.request_layout(cx), overlay)
4693    }
4694
4695    fn paint(
4696        &mut self,
4697        bounds: Bounds<Pixels>,
4698        overlay: &mut Self::State,
4699        cx: &mut ElementContext,
4700    ) {
4701        cx.with_z_index(u16::MAX, |cx| {
4702            cx.add_opaque_layer(bounds);
4703            overlay.paint(cx);
4704        })
4705    }
4706}
4707
4708impl IntoElement for DisconnectedOverlay {
4709    type Element = Self;
4710
4711    fn element_id(&self) -> Option<ui::prelude::ElementId> {
4712        None
4713    }
4714
4715    fn into_element(self) -> Self::Element {
4716        self
4717    }
4718}
4719
4720#[cfg(test)]
4721mod tests {
4722    use std::{cell::RefCell, rc::Rc};
4723
4724    use super::*;
4725    use crate::{
4726        dock::{test::TestPanel, PanelEvent},
4727        item::{
4728            test::{TestItem, TestProjectItem},
4729            ItemEvent,
4730        },
4731    };
4732    use fs::FakeFs;
4733    use gpui::{px, DismissEvent, TestAppContext, VisualTestContext};
4734    use project::{Project, ProjectEntryId};
4735    use serde_json::json;
4736    use settings::SettingsStore;
4737
4738    #[gpui::test]
4739    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
4740        init_test(cx);
4741
4742        let fs = FakeFs::new(cx.executor());
4743        let project = Project::test(fs, [], cx).await;
4744        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
4745
4746        // Adding an item with no ambiguity renders the tab without detail.
4747        let item1 = cx.new_view(|cx| {
4748            let mut item = TestItem::new(cx);
4749            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
4750            item
4751        });
4752        workspace.update(cx, |workspace, cx| {
4753            workspace.add_item_to_active_pane(Box::new(item1.clone()), cx);
4754        });
4755        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
4756
4757        // Adding an item that creates ambiguity increases the level of detail on
4758        // both tabs.
4759        let item2 = cx.new_view(|cx| {
4760            let mut item = TestItem::new(cx);
4761            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
4762            item
4763        });
4764        workspace.update(cx, |workspace, cx| {
4765            workspace.add_item_to_active_pane(Box::new(item2.clone()), cx);
4766        });
4767        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
4768        item2.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
4769
4770        // Adding an item that creates ambiguity increases the level of detail only
4771        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
4772        // we stop at the highest detail available.
4773        let item3 = cx.new_view(|cx| {
4774            let mut item = TestItem::new(cx);
4775            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
4776            item
4777        });
4778        workspace.update(cx, |workspace, cx| {
4779            workspace.add_item_to_active_pane(Box::new(item3.clone()), cx);
4780        });
4781        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
4782        item2.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
4783        item3.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
4784    }
4785
4786    #[gpui::test]
4787    async fn test_tracking_active_path(cx: &mut TestAppContext) {
4788        init_test(cx);
4789
4790        let fs = FakeFs::new(cx.executor());
4791        fs.insert_tree(
4792            "/root1",
4793            json!({
4794                "one.txt": "",
4795                "two.txt": "",
4796            }),
4797        )
4798        .await;
4799        fs.insert_tree(
4800            "/root2",
4801            json!({
4802                "three.txt": "",
4803            }),
4804        )
4805        .await;
4806
4807        let project = Project::test(fs, ["root1".as_ref()], cx).await;
4808        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
4809        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
4810        let worktree_id = project.update(cx, |project, cx| {
4811            project.worktrees().next().unwrap().read(cx).id()
4812        });
4813
4814        let item1 = cx.new_view(|cx| {
4815            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
4816        });
4817        let item2 = cx.new_view(|cx| {
4818            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
4819        });
4820
4821        // Add an item to an empty pane
4822        workspace.update(cx, |workspace, cx| {
4823            workspace.add_item_to_active_pane(Box::new(item1), cx)
4824        });
4825        project.update(cx, |project, cx| {
4826            assert_eq!(
4827                project.active_entry(),
4828                project
4829                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
4830                    .map(|e| e.id)
4831            );
4832        });
4833        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root1"));
4834
4835        // Add a second item to a non-empty pane
4836        workspace.update(cx, |workspace, cx| {
4837            workspace.add_item_to_active_pane(Box::new(item2), cx)
4838        });
4839        assert_eq!(cx.window_title().as_deref(), Some("two.txt — root1"));
4840        project.update(cx, |project, cx| {
4841            assert_eq!(
4842                project.active_entry(),
4843                project
4844                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
4845                    .map(|e| e.id)
4846            );
4847        });
4848
4849        // Close the active item
4850        pane.update(cx, |pane, cx| {
4851            pane.close_active_item(&Default::default(), cx).unwrap()
4852        })
4853        .await
4854        .unwrap();
4855        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root1"));
4856        project.update(cx, |project, cx| {
4857            assert_eq!(
4858                project.active_entry(),
4859                project
4860                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
4861                    .map(|e| e.id)
4862            );
4863        });
4864
4865        // Add a project folder
4866        project
4867            .update(cx, |project, cx| {
4868                project.find_or_create_local_worktree("/root2", true, cx)
4869            })
4870            .await
4871            .unwrap();
4872        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root1, root2"));
4873
4874        // Remove a project folder
4875        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
4876        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root2"));
4877    }
4878
4879    #[gpui::test]
4880    async fn test_close_window(cx: &mut TestAppContext) {
4881        init_test(cx);
4882
4883        let fs = FakeFs::new(cx.executor());
4884        fs.insert_tree("/root", json!({ "one": "" })).await;
4885
4886        let project = Project::test(fs, ["root".as_ref()], cx).await;
4887        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
4888
4889        // When there are no dirty items, there's nothing to do.
4890        let item1 = cx.new_view(|cx| TestItem::new(cx));
4891        workspace.update(cx, |w, cx| {
4892            w.add_item_to_active_pane(Box::new(item1.clone()), cx)
4893        });
4894        let task = workspace.update(cx, |w, cx| w.prepare_to_close(false, cx));
4895        assert!(task.await.unwrap());
4896
4897        // When there are dirty untitled items, prompt to save each one. If the user
4898        // cancels any prompt, then abort.
4899        let item2 = cx.new_view(|cx| TestItem::new(cx).with_dirty(true));
4900        let item3 = cx.new_view(|cx| {
4901            TestItem::new(cx)
4902                .with_dirty(true)
4903                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
4904        });
4905        workspace.update(cx, |w, cx| {
4906            w.add_item_to_active_pane(Box::new(item2.clone()), cx);
4907            w.add_item_to_active_pane(Box::new(item3.clone()), cx);
4908        });
4909        let task = workspace.update(cx, |w, cx| w.prepare_to_close(false, cx));
4910        cx.executor().run_until_parked();
4911        cx.simulate_prompt_answer(2); // cancel save all
4912        cx.executor().run_until_parked();
4913        cx.simulate_prompt_answer(2); // cancel save all
4914        cx.executor().run_until_parked();
4915        assert!(!cx.has_pending_prompt());
4916        assert!(!task.await.unwrap());
4917    }
4918
4919    #[gpui::test]
4920    async fn test_close_pane_items(cx: &mut TestAppContext) {
4921        init_test(cx);
4922
4923        let fs = FakeFs::new(cx.executor());
4924
4925        let project = Project::test(fs, None, cx).await;
4926        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
4927
4928        let item1 = cx.new_view(|cx| {
4929            TestItem::new(cx)
4930                .with_dirty(true)
4931                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
4932        });
4933        let item2 = cx.new_view(|cx| {
4934            TestItem::new(cx)
4935                .with_dirty(true)
4936                .with_conflict(true)
4937                .with_project_items(&[TestProjectItem::new(2, "2.txt", cx)])
4938        });
4939        let item3 = cx.new_view(|cx| {
4940            TestItem::new(cx)
4941                .with_dirty(true)
4942                .with_conflict(true)
4943                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
4944        });
4945        let item4 = cx.new_view(|cx| {
4946            TestItem::new(cx)
4947                .with_dirty(true)
4948                .with_project_items(&[TestProjectItem::new_untitled(cx)])
4949        });
4950        let pane = workspace.update(cx, |workspace, cx| {
4951            workspace.add_item_to_active_pane(Box::new(item1.clone()), cx);
4952            workspace.add_item_to_active_pane(Box::new(item2.clone()), cx);
4953            workspace.add_item_to_active_pane(Box::new(item3.clone()), cx);
4954            workspace.add_item_to_active_pane(Box::new(item4.clone()), cx);
4955            workspace.active_pane().clone()
4956        });
4957
4958        let close_items = pane.update(cx, |pane, cx| {
4959            pane.activate_item(1, true, true, cx);
4960            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
4961            let item1_id = item1.item_id();
4962            let item3_id = item3.item_id();
4963            let item4_id = item4.item_id();
4964            pane.close_items(cx, SaveIntent::Close, move |id| {
4965                [item1_id, item3_id, item4_id].contains(&id)
4966            })
4967        });
4968        cx.executor().run_until_parked();
4969
4970        assert!(cx.has_pending_prompt());
4971        // Ignore "Save all" prompt
4972        cx.simulate_prompt_answer(2);
4973        cx.executor().run_until_parked();
4974        // There's a prompt to save item 1.
4975        pane.update(cx, |pane, _| {
4976            assert_eq!(pane.items_len(), 4);
4977            assert_eq!(pane.active_item().unwrap().item_id(), item1.item_id());
4978        });
4979        // Confirm saving item 1.
4980        cx.simulate_prompt_answer(0);
4981        cx.executor().run_until_parked();
4982
4983        // Item 1 is saved. There's a prompt to save item 3.
4984        pane.update(cx, |pane, cx| {
4985            assert_eq!(item1.read(cx).save_count, 1);
4986            assert_eq!(item1.read(cx).save_as_count, 0);
4987            assert_eq!(item1.read(cx).reload_count, 0);
4988            assert_eq!(pane.items_len(), 3);
4989            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
4990        });
4991        assert!(cx.has_pending_prompt());
4992
4993        // Cancel saving item 3.
4994        cx.simulate_prompt_answer(1);
4995        cx.executor().run_until_parked();
4996
4997        // Item 3 is reloaded. There's a prompt to save item 4.
4998        pane.update(cx, |pane, cx| {
4999            assert_eq!(item3.read(cx).save_count, 0);
5000            assert_eq!(item3.read(cx).save_as_count, 0);
5001            assert_eq!(item3.read(cx).reload_count, 1);
5002            assert_eq!(pane.items_len(), 2);
5003            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
5004        });
5005        assert!(cx.has_pending_prompt());
5006
5007        // Confirm saving item 4.
5008        cx.simulate_prompt_answer(0);
5009        cx.executor().run_until_parked();
5010
5011        // There's a prompt for a path for item 4.
5012        cx.simulate_new_path_selection(|_| Some(Default::default()));
5013        close_items.await.unwrap();
5014
5015        // The requested items are closed.
5016        pane.update(cx, |pane, cx| {
5017            assert_eq!(item4.read(cx).save_count, 0);
5018            assert_eq!(item4.read(cx).save_as_count, 1);
5019            assert_eq!(item4.read(cx).reload_count, 0);
5020            assert_eq!(pane.items_len(), 1);
5021            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
5022        });
5023    }
5024
5025    #[gpui::test]
5026    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
5027        init_test(cx);
5028
5029        let fs = FakeFs::new(cx.executor());
5030        let project = Project::test(fs, [], cx).await;
5031        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5032
5033        // Create several workspace items with single project entries, and two
5034        // workspace items with multiple project entries.
5035        let single_entry_items = (0..=4)
5036            .map(|project_entry_id| {
5037                cx.new_view(|cx| {
5038                    TestItem::new(cx)
5039                        .with_dirty(true)
5040                        .with_project_items(&[TestProjectItem::new(
5041                            project_entry_id,
5042                            &format!("{project_entry_id}.txt"),
5043                            cx,
5044                        )])
5045                })
5046            })
5047            .collect::<Vec<_>>();
5048        let item_2_3 = cx.new_view(|cx| {
5049            TestItem::new(cx)
5050                .with_dirty(true)
5051                .with_singleton(false)
5052                .with_project_items(&[
5053                    single_entry_items[2].read(cx).project_items[0].clone(),
5054                    single_entry_items[3].read(cx).project_items[0].clone(),
5055                ])
5056        });
5057        let item_3_4 = cx.new_view(|cx| {
5058            TestItem::new(cx)
5059                .with_dirty(true)
5060                .with_singleton(false)
5061                .with_project_items(&[
5062                    single_entry_items[3].read(cx).project_items[0].clone(),
5063                    single_entry_items[4].read(cx).project_items[0].clone(),
5064                ])
5065        });
5066
5067        // Create two panes that contain the following project entries:
5068        //   left pane:
5069        //     multi-entry items:   (2, 3)
5070        //     single-entry items:  0, 1, 2, 3, 4
5071        //   right pane:
5072        //     single-entry items:  1
5073        //     multi-entry items:   (3, 4)
5074        let left_pane = workspace.update(cx, |workspace, cx| {
5075            let left_pane = workspace.active_pane().clone();
5076            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), cx);
5077            for item in single_entry_items {
5078                workspace.add_item_to_active_pane(Box::new(item), cx);
5079            }
5080            left_pane.update(cx, |pane, cx| {
5081                pane.activate_item(2, true, true, cx);
5082            });
5083
5084            let right_pane = workspace
5085                .split_and_clone(left_pane.clone(), SplitDirection::Right, cx)
5086                .unwrap();
5087
5088            right_pane.update(cx, |pane, cx| {
5089                pane.add_item(Box::new(item_3_4.clone()), true, true, None, cx);
5090            });
5091
5092            left_pane
5093        });
5094
5095        cx.focus_view(&left_pane);
5096
5097        // When closing all of the items in the left pane, we should be prompted twice:
5098        // once for project entry 0, and once for project entry 2. Project entries 1,
5099        // 3, and 4 are all still open in the other paten. After those two
5100        // prompts, the task should complete.
5101
5102        let close = left_pane.update(cx, |pane, cx| {
5103            pane.close_all_items(&CloseAllItems::default(), cx).unwrap()
5104        });
5105        cx.executor().run_until_parked();
5106
5107        // Discard "Save all" prompt
5108        cx.simulate_prompt_answer(2);
5109
5110        cx.executor().run_until_parked();
5111        left_pane.update(cx, |pane, cx| {
5112            assert_eq!(
5113                pane.active_item().unwrap().project_entry_ids(cx).as_slice(),
5114                &[ProjectEntryId::from_proto(0)]
5115            );
5116        });
5117        cx.simulate_prompt_answer(0);
5118
5119        cx.executor().run_until_parked();
5120        left_pane.update(cx, |pane, cx| {
5121            assert_eq!(
5122                pane.active_item().unwrap().project_entry_ids(cx).as_slice(),
5123                &[ProjectEntryId::from_proto(2)]
5124            );
5125        });
5126        cx.simulate_prompt_answer(0);
5127
5128        cx.executor().run_until_parked();
5129        close.await.unwrap();
5130        left_pane.update(cx, |pane, _| {
5131            assert_eq!(pane.items_len(), 0);
5132        });
5133    }
5134
5135    #[gpui::test]
5136    async fn test_autosave(cx: &mut gpui::TestAppContext) {
5137        init_test(cx);
5138
5139        let fs = FakeFs::new(cx.executor());
5140        let project = Project::test(fs, [], cx).await;
5141        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5142        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
5143
5144        let item = cx.new_view(|cx| {
5145            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
5146        });
5147        let item_id = item.entity_id();
5148        workspace.update(cx, |workspace, cx| {
5149            workspace.add_item_to_active_pane(Box::new(item.clone()), cx);
5150        });
5151
5152        // Autosave on window change.
5153        item.update(cx, |item, cx| {
5154            cx.update_global(|settings: &mut SettingsStore, cx| {
5155                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5156                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
5157                })
5158            });
5159            item.is_dirty = true;
5160        });
5161
5162        // Deactivating the window saves the file.
5163        cx.deactivate_window();
5164        item.update(cx, |item, _| assert_eq!(item.save_count, 1));
5165
5166        // Autosave on focus change.
5167        item.update(cx, |item, cx| {
5168            cx.focus_self();
5169            cx.update_global(|settings: &mut SettingsStore, cx| {
5170                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5171                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
5172                })
5173            });
5174            item.is_dirty = true;
5175        });
5176
5177        // Blurring the item saves the file.
5178        item.update(cx, |_, cx| cx.blur());
5179        cx.executor().run_until_parked();
5180        item.update(cx, |item, _| assert_eq!(item.save_count, 2));
5181
5182        // Deactivating the window still saves the file.
5183        cx.update(|cx| cx.activate_window());
5184        item.update(cx, |item, cx| {
5185            cx.focus_self();
5186            item.is_dirty = true;
5187        });
5188        cx.deactivate_window();
5189
5190        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
5191
5192        // Autosave after delay.
5193        item.update(cx, |item, cx| {
5194            cx.update_global(|settings: &mut SettingsStore, cx| {
5195                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5196                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
5197                })
5198            });
5199            item.is_dirty = true;
5200            cx.emit(ItemEvent::Edit);
5201        });
5202
5203        // Delay hasn't fully expired, so the file is still dirty and unsaved.
5204        cx.executor().advance_clock(Duration::from_millis(250));
5205        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
5206
5207        // After delay expires, the file is saved.
5208        cx.executor().advance_clock(Duration::from_millis(250));
5209        item.update(cx, |item, _| assert_eq!(item.save_count, 4));
5210
5211        // Autosave on focus change, ensuring closing the tab counts as such.
5212        item.update(cx, |item, cx| {
5213            cx.update_global(|settings: &mut SettingsStore, cx| {
5214                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5215                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
5216                })
5217            });
5218            item.is_dirty = true;
5219        });
5220
5221        pane.update(cx, |pane, cx| {
5222            pane.close_items(cx, SaveIntent::Close, move |id| id == item_id)
5223        })
5224        .await
5225        .unwrap();
5226        assert!(!cx.has_pending_prompt());
5227        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
5228
5229        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
5230        workspace.update(cx, |workspace, cx| {
5231            workspace.add_item_to_active_pane(Box::new(item.clone()), cx);
5232        });
5233        item.update(cx, |item, cx| {
5234            item.project_items[0].update(cx, |item, _| {
5235                item.entry_id = None;
5236            });
5237            item.is_dirty = true;
5238            cx.blur();
5239        });
5240        cx.run_until_parked();
5241        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
5242
5243        // Ensure autosave is prevented for deleted files also when closing the buffer.
5244        let _close_items = pane.update(cx, |pane, cx| {
5245            pane.close_items(cx, SaveIntent::Close, move |id| id == item_id)
5246        });
5247        cx.run_until_parked();
5248        assert!(cx.has_pending_prompt());
5249        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
5250    }
5251
5252    #[gpui::test]
5253    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
5254        init_test(cx);
5255
5256        let fs = FakeFs::new(cx.executor());
5257
5258        let project = Project::test(fs, [], cx).await;
5259        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5260
5261        let item = cx.new_view(|cx| {
5262            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
5263        });
5264        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
5265        let toolbar = pane.update(cx, |pane, _| pane.toolbar().clone());
5266        let toolbar_notify_count = Rc::new(RefCell::new(0));
5267
5268        workspace.update(cx, |workspace, cx| {
5269            workspace.add_item_to_active_pane(Box::new(item.clone()), cx);
5270            let toolbar_notification_count = toolbar_notify_count.clone();
5271            cx.observe(&toolbar, move |_, _, _| {
5272                *toolbar_notification_count.borrow_mut() += 1
5273            })
5274            .detach();
5275        });
5276
5277        pane.update(cx, |pane, _| {
5278            assert!(!pane.can_navigate_backward());
5279            assert!(!pane.can_navigate_forward());
5280        });
5281
5282        item.update(cx, |item, cx| {
5283            item.set_state("one".to_string(), cx);
5284        });
5285
5286        // Toolbar must be notified to re-render the navigation buttons
5287        assert_eq!(*toolbar_notify_count.borrow(), 1);
5288
5289        pane.update(cx, |pane, _| {
5290            assert!(pane.can_navigate_backward());
5291            assert!(!pane.can_navigate_forward());
5292        });
5293
5294        workspace
5295            .update(cx, |workspace, cx| workspace.go_back(pane.downgrade(), cx))
5296            .await
5297            .unwrap();
5298
5299        assert_eq!(*toolbar_notify_count.borrow(), 2);
5300        pane.update(cx, |pane, _| {
5301            assert!(!pane.can_navigate_backward());
5302            assert!(pane.can_navigate_forward());
5303        });
5304    }
5305
5306    #[gpui::test]
5307    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
5308        init_test(cx);
5309        let fs = FakeFs::new(cx.executor());
5310
5311        let project = Project::test(fs, [], cx).await;
5312        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5313
5314        let panel = workspace.update(cx, |workspace, cx| {
5315            let panel = cx.new_view(|cx| TestPanel::new(DockPosition::Right, cx));
5316            workspace.add_panel(panel.clone(), cx);
5317
5318            workspace
5319                .right_dock()
5320                .update(cx, |right_dock, cx| right_dock.set_open(true, cx));
5321
5322            panel
5323        });
5324
5325        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
5326        pane.update(cx, |pane, cx| {
5327            let item = cx.new_view(|cx| TestItem::new(cx));
5328            pane.add_item(Box::new(item), true, true, None, cx);
5329        });
5330
5331        // Transfer focus from center to panel
5332        workspace.update(cx, |workspace, cx| {
5333            workspace.toggle_panel_focus::<TestPanel>(cx);
5334        });
5335
5336        workspace.update(cx, |workspace, cx| {
5337            assert!(workspace.right_dock().read(cx).is_open());
5338            assert!(!panel.is_zoomed(cx));
5339            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5340        });
5341
5342        // Transfer focus from panel to center
5343        workspace.update(cx, |workspace, cx| {
5344            workspace.toggle_panel_focus::<TestPanel>(cx);
5345        });
5346
5347        workspace.update(cx, |workspace, cx| {
5348            assert!(workspace.right_dock().read(cx).is_open());
5349            assert!(!panel.is_zoomed(cx));
5350            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5351        });
5352
5353        // Close the dock
5354        workspace.update(cx, |workspace, cx| {
5355            workspace.toggle_dock(DockPosition::Right, cx);
5356        });
5357
5358        workspace.update(cx, |workspace, cx| {
5359            assert!(!workspace.right_dock().read(cx).is_open());
5360            assert!(!panel.is_zoomed(cx));
5361            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5362        });
5363
5364        // Open the dock
5365        workspace.update(cx, |workspace, cx| {
5366            workspace.toggle_dock(DockPosition::Right, cx);
5367        });
5368
5369        workspace.update(cx, |workspace, cx| {
5370            assert!(workspace.right_dock().read(cx).is_open());
5371            assert!(!panel.is_zoomed(cx));
5372            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5373        });
5374
5375        // Focus and zoom panel
5376        panel.update(cx, |panel, cx| {
5377            cx.focus_self();
5378            panel.set_zoomed(true, cx)
5379        });
5380
5381        workspace.update(cx, |workspace, cx| {
5382            assert!(workspace.right_dock().read(cx).is_open());
5383            assert!(panel.is_zoomed(cx));
5384            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5385        });
5386
5387        // Transfer focus to the center closes the dock
5388        workspace.update(cx, |workspace, cx| {
5389            workspace.toggle_panel_focus::<TestPanel>(cx);
5390        });
5391
5392        workspace.update(cx, |workspace, cx| {
5393            assert!(!workspace.right_dock().read(cx).is_open());
5394            assert!(panel.is_zoomed(cx));
5395            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5396        });
5397
5398        // Transferring focus back to the panel keeps it zoomed
5399        workspace.update(cx, |workspace, cx| {
5400            workspace.toggle_panel_focus::<TestPanel>(cx);
5401        });
5402
5403        workspace.update(cx, |workspace, cx| {
5404            assert!(workspace.right_dock().read(cx).is_open());
5405            assert!(panel.is_zoomed(cx));
5406            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5407        });
5408
5409        // Close the dock while it is zoomed
5410        workspace.update(cx, |workspace, cx| {
5411            workspace.toggle_dock(DockPosition::Right, cx)
5412        });
5413
5414        workspace.update(cx, |workspace, cx| {
5415            assert!(!workspace.right_dock().read(cx).is_open());
5416            assert!(panel.is_zoomed(cx));
5417            assert!(workspace.zoomed.is_none());
5418            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5419        });
5420
5421        // Opening the dock, when it's zoomed, retains focus
5422        workspace.update(cx, |workspace, cx| {
5423            workspace.toggle_dock(DockPosition::Right, cx)
5424        });
5425
5426        workspace.update(cx, |workspace, cx| {
5427            assert!(workspace.right_dock().read(cx).is_open());
5428            assert!(panel.is_zoomed(cx));
5429            assert!(workspace.zoomed.is_some());
5430            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5431        });
5432
5433        // Unzoom and close the panel, zoom the active pane.
5434        panel.update(cx, |panel, cx| panel.set_zoomed(false, cx));
5435        workspace.update(cx, |workspace, cx| {
5436            workspace.toggle_dock(DockPosition::Right, cx)
5437        });
5438        pane.update(cx, |pane, cx| pane.toggle_zoom(&Default::default(), cx));
5439
5440        // Opening a dock unzooms the pane.
5441        workspace.update(cx, |workspace, cx| {
5442            workspace.toggle_dock(DockPosition::Right, cx)
5443        });
5444        workspace.update(cx, |workspace, cx| {
5445            let pane = pane.read(cx);
5446            assert!(!pane.is_zoomed());
5447            assert!(!pane.focus_handle(cx).is_focused(cx));
5448            assert!(workspace.right_dock().read(cx).is_open());
5449            assert!(workspace.zoomed.is_none());
5450        });
5451    }
5452
5453    struct TestModal(FocusHandle);
5454
5455    impl TestModal {
5456        fn new(cx: &mut ViewContext<Self>) -> Self {
5457            Self(cx.focus_handle())
5458        }
5459    }
5460
5461    impl EventEmitter<DismissEvent> for TestModal {}
5462
5463    impl FocusableView for TestModal {
5464        fn focus_handle(&self, _cx: &AppContext) -> FocusHandle {
5465            self.0.clone()
5466        }
5467    }
5468
5469    impl ModalView for TestModal {}
5470
5471    impl Render for TestModal {
5472        fn render(&mut self, _cx: &mut ViewContext<TestModal>) -> impl IntoElement {
5473            div().track_focus(&self.0)
5474        }
5475    }
5476
5477    #[gpui::test]
5478    async fn test_panels(cx: &mut gpui::TestAppContext) {
5479        init_test(cx);
5480        let fs = FakeFs::new(cx.executor());
5481
5482        let project = Project::test(fs, [], cx).await;
5483        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5484
5485        let (panel_1, panel_2) = workspace.update(cx, |workspace, cx| {
5486            let panel_1 = cx.new_view(|cx| TestPanel::new(DockPosition::Left, cx));
5487            workspace.add_panel(panel_1.clone(), cx);
5488            workspace
5489                .left_dock()
5490                .update(cx, |left_dock, cx| left_dock.set_open(true, cx));
5491            let panel_2 = cx.new_view(|cx| TestPanel::new(DockPosition::Right, cx));
5492            workspace.add_panel(panel_2.clone(), cx);
5493            workspace
5494                .right_dock()
5495                .update(cx, |right_dock, cx| right_dock.set_open(true, cx));
5496
5497            let left_dock = workspace.left_dock();
5498            assert_eq!(
5499                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5500                panel_1.panel_id()
5501            );
5502            assert_eq!(
5503                left_dock.read(cx).active_panel_size(cx).unwrap(),
5504                panel_1.size(cx)
5505            );
5506
5507            left_dock.update(cx, |left_dock, cx| {
5508                left_dock.resize_active_panel(Some(px(1337.)), cx)
5509            });
5510            assert_eq!(
5511                workspace
5512                    .right_dock()
5513                    .read(cx)
5514                    .visible_panel()
5515                    .unwrap()
5516                    .panel_id(),
5517                panel_2.panel_id(),
5518            );
5519
5520            (panel_1, panel_2)
5521        });
5522
5523        // Move panel_1 to the right
5524        panel_1.update(cx, |panel_1, cx| {
5525            panel_1.set_position(DockPosition::Right, cx)
5526        });
5527
5528        workspace.update(cx, |workspace, cx| {
5529            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
5530            // Since it was the only panel on the left, the left dock should now be closed.
5531            assert!(!workspace.left_dock().read(cx).is_open());
5532            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
5533            let right_dock = workspace.right_dock();
5534            assert_eq!(
5535                right_dock.read(cx).visible_panel().unwrap().panel_id(),
5536                panel_1.panel_id()
5537            );
5538            assert_eq!(
5539                right_dock.read(cx).active_panel_size(cx).unwrap(),
5540                px(1337.)
5541            );
5542
5543            // Now we move panel_2 to the left
5544            panel_2.set_position(DockPosition::Left, cx);
5545        });
5546
5547        workspace.update(cx, |workspace, cx| {
5548            // Since panel_2 was not visible on the right, we don't open the left dock.
5549            assert!(!workspace.left_dock().read(cx).is_open());
5550            // And the right dock is unaffected in its displaying of panel_1
5551            assert!(workspace.right_dock().read(cx).is_open());
5552            assert_eq!(
5553                workspace
5554                    .right_dock()
5555                    .read(cx)
5556                    .visible_panel()
5557                    .unwrap()
5558                    .panel_id(),
5559                panel_1.panel_id(),
5560            );
5561        });
5562
5563        // Move panel_1 back to the left
5564        panel_1.update(cx, |panel_1, cx| {
5565            panel_1.set_position(DockPosition::Left, cx)
5566        });
5567
5568        workspace.update(cx, |workspace, cx| {
5569            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
5570            let left_dock = workspace.left_dock();
5571            assert!(left_dock.read(cx).is_open());
5572            assert_eq!(
5573                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5574                panel_1.panel_id()
5575            );
5576            assert_eq!(left_dock.read(cx).active_panel_size(cx).unwrap(), px(1337.));
5577            // And the right dock should be closed as it no longer has any panels.
5578            assert!(!workspace.right_dock().read(cx).is_open());
5579
5580            // Now we move panel_1 to the bottom
5581            panel_1.set_position(DockPosition::Bottom, cx);
5582        });
5583
5584        workspace.update(cx, |workspace, cx| {
5585            // Since panel_1 was visible on the left, we close the left dock.
5586            assert!(!workspace.left_dock().read(cx).is_open());
5587            // The bottom dock is sized based on the panel's default size,
5588            // since the panel orientation changed from vertical to horizontal.
5589            let bottom_dock = workspace.bottom_dock();
5590            assert_eq!(
5591                bottom_dock.read(cx).active_panel_size(cx).unwrap(),
5592                panel_1.size(cx),
5593            );
5594            // Close bottom dock and move panel_1 back to the left.
5595            bottom_dock.update(cx, |bottom_dock, cx| bottom_dock.set_open(false, cx));
5596            panel_1.set_position(DockPosition::Left, cx);
5597        });
5598
5599        // Emit activated event on panel 1
5600        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
5601
5602        // Now the left dock is open and panel_1 is active and focused.
5603        workspace.update(cx, |workspace, cx| {
5604            let left_dock = workspace.left_dock();
5605            assert!(left_dock.read(cx).is_open());
5606            assert_eq!(
5607                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5608                panel_1.panel_id(),
5609            );
5610            assert!(panel_1.focus_handle(cx).is_focused(cx));
5611        });
5612
5613        // Emit closed event on panel 2, which is not active
5614        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
5615
5616        // Wo don't close the left dock, because panel_2 wasn't the active panel
5617        workspace.update(cx, |workspace, cx| {
5618            let left_dock = workspace.left_dock();
5619            assert!(left_dock.read(cx).is_open());
5620            assert_eq!(
5621                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5622                panel_1.panel_id(),
5623            );
5624        });
5625
5626        // Emitting a ZoomIn event shows the panel as zoomed.
5627        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
5628        workspace.update(cx, |workspace, _| {
5629            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5630            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
5631        });
5632
5633        // Move panel to another dock while it is zoomed
5634        panel_1.update(cx, |panel, cx| panel.set_position(DockPosition::Right, cx));
5635        workspace.update(cx, |workspace, _| {
5636            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5637
5638            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
5639        });
5640
5641        // This is a helper for getting a:
5642        // - valid focus on an element,
5643        // - that isn't a part of the panes and panels system of the Workspace,
5644        // - and doesn't trigger the 'on_focus_lost' API.
5645        let focus_other_view = {
5646            let workspace = workspace.clone();
5647            move |cx: &mut VisualTestContext| {
5648                workspace.update(cx, |workspace, cx| {
5649                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
5650                        workspace.toggle_modal(cx, TestModal::new);
5651                        workspace.toggle_modal(cx, TestModal::new);
5652                    } else {
5653                        workspace.toggle_modal(cx, TestModal::new);
5654                    }
5655                })
5656            }
5657        };
5658
5659        // If focus is transferred to another view that's not a panel or another pane, we still show
5660        // the panel as zoomed.
5661        focus_other_view(cx);
5662        workspace.update(cx, |workspace, _| {
5663            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5664            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
5665        });
5666
5667        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
5668        workspace.update(cx, |_, cx| cx.focus_self());
5669        workspace.update(cx, |workspace, _| {
5670            assert_eq!(workspace.zoomed, None);
5671            assert_eq!(workspace.zoomed_position, None);
5672        });
5673
5674        // If focus is transferred again to another view that's not a panel or a pane, we won't
5675        // show the panel as zoomed because it wasn't zoomed before.
5676        focus_other_view(cx);
5677        workspace.update(cx, |workspace, _| {
5678            assert_eq!(workspace.zoomed, None);
5679            assert_eq!(workspace.zoomed_position, None);
5680        });
5681
5682        // When the panel is activated, it is zoomed again.
5683        cx.dispatch_action(ToggleRightDock);
5684        workspace.update(cx, |workspace, _| {
5685            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5686            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
5687        });
5688
5689        // Emitting a ZoomOut event unzooms the panel.
5690        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
5691        workspace.update(cx, |workspace, _| {
5692            assert_eq!(workspace.zoomed, None);
5693            assert_eq!(workspace.zoomed_position, None);
5694        });
5695
5696        // Emit closed event on panel 1, which is active
5697        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
5698
5699        // Now the left dock is closed, because panel_1 was the active panel
5700        workspace.update(cx, |workspace, cx| {
5701            let right_dock = workspace.right_dock();
5702            assert!(!right_dock.read(cx).is_open());
5703        });
5704    }
5705
5706    pub fn init_test(cx: &mut TestAppContext) {
5707        cx.update(|cx| {
5708            let settings_store = SettingsStore::test(cx);
5709            cx.set_global(settings_store);
5710            theme::init(theme::LoadThemes::JustBase, cx);
5711            language::init(cx);
5712            crate::init_settings(cx);
5713            Project::init_settings(cx);
5714        });
5715    }
5716}