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) -> &Arc<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            .children(self.titlebar_item.clone())
3823            .child(
3824                div()
3825                    .id("workspace")
3826                    .relative()
3827                    .flex_1()
3828                    .w_full()
3829                    .flex()
3830                    .flex_col()
3831                    .overflow_hidden()
3832                    .border_t()
3833                    .border_b()
3834                    .border_color(colors.border)
3835                    .child(
3836                        canvas({
3837                            let this = cx.view().clone();
3838                            move |bounds, cx| {
3839                                this.update(cx, |this, _cx| {
3840                                    this.bounds = *bounds;
3841                                })
3842                            }
3843                        })
3844                        .absolute()
3845                        .size_full(),
3846                    )
3847                    .on_drag_move(
3848                        cx.listener(|workspace, e: &DragMoveEvent<DraggedDock>, cx| {
3849                            match e.drag(cx).0 {
3850                                DockPosition::Left => {
3851                                    let size = workspace.bounds.left() + e.event.position.x;
3852                                    workspace.left_dock.update(cx, |left_dock, cx| {
3853                                        left_dock.resize_active_panel(Some(size), cx);
3854                                    });
3855                                }
3856                                DockPosition::Right => {
3857                                    let size = workspace.bounds.right() - e.event.position.x;
3858                                    workspace.right_dock.update(cx, |right_dock, cx| {
3859                                        right_dock.resize_active_panel(Some(size), cx);
3860                                    });
3861                                }
3862                                DockPosition::Bottom => {
3863                                    let size = workspace.bounds.bottom() - e.event.position.y;
3864                                    workspace.bottom_dock.update(cx, |bottom_dock, cx| {
3865                                        bottom_dock.resize_active_panel(Some(size), cx);
3866                                    });
3867                                }
3868                            }
3869                        }),
3870                    )
3871                    .child(self.modal_layer.clone())
3872                    .child(
3873                        div()
3874                            .flex()
3875                            .flex_row()
3876                            .h_full()
3877                            // Left Dock
3878                            .children(self.zoomed_position.ne(&Some(DockPosition::Left)).then(
3879                                || {
3880                                    div()
3881                                        .flex()
3882                                        .flex_none()
3883                                        .overflow_hidden()
3884                                        .child(self.left_dock.clone())
3885                                },
3886                            ))
3887                            // Panes
3888                            .child(
3889                                div()
3890                                    .flex()
3891                                    .flex_col()
3892                                    .flex_1()
3893                                    .overflow_hidden()
3894                                    .child(self.center.render(
3895                                        &self.project,
3896                                        &self.follower_states,
3897                                        self.active_call(),
3898                                        &self.active_pane,
3899                                        self.zoomed.as_ref(),
3900                                        &self.app_state,
3901                                        cx,
3902                                    ))
3903                                    .children(
3904                                        self.zoomed_position
3905                                            .ne(&Some(DockPosition::Bottom))
3906                                            .then(|| self.bottom_dock.clone()),
3907                                    ),
3908                            )
3909                            // Right Dock
3910                            .children(self.zoomed_position.ne(&Some(DockPosition::Right)).then(
3911                                || {
3912                                    div()
3913                                        .flex()
3914                                        .flex_none()
3915                                        .overflow_hidden()
3916                                        .child(self.right_dock.clone())
3917                                },
3918                            )),
3919                    )
3920                    .children(self.render_notifications(cx))
3921                    .children(self.zoomed.as_ref().and_then(|view| {
3922                        let zoomed_view = view.upgrade()?;
3923                        let div = div()
3924                            .z_index(1)
3925                            .absolute()
3926                            .overflow_hidden()
3927                            .border_color(colors.border)
3928                            .bg(colors.background)
3929                            .child(zoomed_view)
3930                            .inset_0()
3931                            .shadow_lg();
3932
3933                        Some(match self.zoomed_position {
3934                            Some(DockPosition::Left) => div.right_2().border_r(),
3935                            Some(DockPosition::Right) => div.left_2().border_l(),
3936                            Some(DockPosition::Bottom) => div.top_2().border_t(),
3937                            None => div.top_2().bottom_2().left_2().right_2().border(),
3938                        })
3939                    })),
3940            )
3941            .child(self.status_bar.clone())
3942            .children(if self.project.read(cx).is_disconnected() {
3943                Some(DisconnectedOverlay)
3944            } else {
3945                None
3946            })
3947    }
3948}
3949
3950impl WorkspaceStore {
3951    pub fn new(client: Arc<Client>, cx: &mut ModelContext<Self>) -> Self {
3952        Self {
3953            workspaces: Default::default(),
3954            _subscriptions: vec![
3955                client.add_request_handler(cx.weak_model(), Self::handle_follow),
3956                client.add_message_handler(cx.weak_model(), Self::handle_update_followers),
3957            ],
3958            client,
3959        }
3960    }
3961
3962    pub fn update_followers(
3963        &self,
3964        project_id: Option<u64>,
3965        update: proto::update_followers::Variant,
3966        cx: &AppContext,
3967    ) -> Option<()> {
3968        let active_call = ActiveCall::try_global(cx)?;
3969        let room_id = active_call.read(cx).room()?.read(cx).id();
3970        self.client
3971            .send(proto::UpdateFollowers {
3972                room_id,
3973                project_id,
3974                variant: Some(update),
3975            })
3976            .log_err()
3977    }
3978
3979    pub async fn handle_follow(
3980        this: Model<Self>,
3981        envelope: TypedEnvelope<proto::Follow>,
3982        _: Arc<Client>,
3983        mut cx: AsyncAppContext,
3984    ) -> Result<proto::FollowResponse> {
3985        this.update(&mut cx, |this, cx| {
3986            let follower = Follower {
3987                project_id: envelope.payload.project_id,
3988                peer_id: envelope.original_sender_id()?,
3989            };
3990
3991            let mut response = proto::FollowResponse::default();
3992            this.workspaces.retain(|workspace| {
3993                workspace
3994                    .update(cx, |workspace, cx| {
3995                        let handler_response = workspace.handle_follow(follower.project_id, cx);
3996                        if response.views.is_empty() {
3997                            response.views = handler_response.views;
3998                        } else {
3999                            response.views.extend_from_slice(&handler_response.views);
4000                        }
4001
4002                        if let Some(active_view_id) = handler_response.active_view_id.clone() {
4003                            if response.active_view_id.is_none()
4004                                || workspace.project.read(cx).remote_id() == follower.project_id
4005                            {
4006                                response.active_view_id = Some(active_view_id);
4007                            }
4008                        }
4009
4010                        if let Some(active_view) = handler_response.active_view.clone() {
4011                            if response.active_view_id.is_none()
4012                                || workspace.project.read(cx).remote_id() == follower.project_id
4013                            {
4014                                response.active_view = Some(active_view)
4015                            }
4016                        }
4017                    })
4018                    .is_ok()
4019            });
4020
4021            Ok(response)
4022        })?
4023    }
4024
4025    async fn handle_update_followers(
4026        this: Model<Self>,
4027        envelope: TypedEnvelope<proto::UpdateFollowers>,
4028        _: Arc<Client>,
4029        mut cx: AsyncAppContext,
4030    ) -> Result<()> {
4031        let leader_id = envelope.original_sender_id()?;
4032        let update = envelope.payload;
4033
4034        this.update(&mut cx, |this, cx| {
4035            this.workspaces.retain(|workspace| {
4036                workspace
4037                    .update(cx, |workspace, cx| {
4038                        let project_id = workspace.project.read(cx).remote_id();
4039                        if update.project_id != project_id && update.project_id.is_some() {
4040                            return;
4041                        }
4042                        workspace.handle_update_followers(leader_id, update.clone(), cx);
4043                    })
4044                    .is_ok()
4045            });
4046            Ok(())
4047        })?
4048    }
4049}
4050
4051impl ViewId {
4052    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
4053        Ok(Self {
4054            creator: message
4055                .creator
4056                .ok_or_else(|| anyhow!("creator is missing"))?,
4057            id: message.id,
4058        })
4059    }
4060
4061    pub(crate) fn to_proto(&self) -> proto::ViewId {
4062        proto::ViewId {
4063            creator: Some(self.creator),
4064            id: self.id,
4065        }
4066    }
4067}
4068
4069pub trait WorkspaceHandle {
4070    fn file_project_paths(&self, cx: &AppContext) -> Vec<ProjectPath>;
4071}
4072
4073impl WorkspaceHandle for View<Workspace> {
4074    fn file_project_paths(&self, cx: &AppContext) -> Vec<ProjectPath> {
4075        self.read(cx)
4076            .worktrees(cx)
4077            .flat_map(|worktree| {
4078                let worktree_id = worktree.read(cx).id();
4079                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
4080                    worktree_id,
4081                    path: f.path.clone(),
4082                })
4083            })
4084            .collect::<Vec<_>>()
4085    }
4086}
4087
4088impl std::fmt::Debug for OpenPaths {
4089    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
4090        f.debug_struct("OpenPaths")
4091            .field("paths", &self.paths)
4092            .finish()
4093    }
4094}
4095
4096pub fn activate_workspace_for_project(
4097    cx: &mut AppContext,
4098    predicate: impl Fn(&Project, &AppContext) -> bool + Send + 'static,
4099) -> Option<WindowHandle<Workspace>> {
4100    for window in cx.windows() {
4101        let Some(workspace) = window.downcast::<Workspace>() else {
4102            continue;
4103        };
4104
4105        let predicate = workspace
4106            .update(cx, |workspace, cx| {
4107                let project = workspace.project.read(cx);
4108                if predicate(project, cx) {
4109                    cx.activate_window();
4110                    true
4111                } else {
4112                    false
4113                }
4114            })
4115            .log_err()
4116            .unwrap_or(false);
4117
4118        if predicate {
4119            return Some(workspace);
4120        }
4121    }
4122
4123    None
4124}
4125
4126pub async fn last_opened_workspace_paths() -> Option<WorkspaceLocation> {
4127    DB.last_workspace().await.log_err().flatten()
4128}
4129
4130actions!(collab, [OpenChannelNotes]);
4131
4132async fn join_channel_internal(
4133    channel_id: ChannelId,
4134    app_state: &Arc<AppState>,
4135    requesting_window: Option<WindowHandle<Workspace>>,
4136    active_call: &Model<ActiveCall>,
4137    cx: &mut AsyncAppContext,
4138) -> Result<bool> {
4139    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
4140        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
4141            return (false, None);
4142        };
4143
4144        let already_in_channel = room.channel_id() == Some(channel_id);
4145        let should_prompt = room.is_sharing_project()
4146            && room.remote_participants().len() > 0
4147            && !already_in_channel;
4148        let open_room = if already_in_channel {
4149            active_call.room().cloned()
4150        } else {
4151            None
4152        };
4153        (should_prompt, open_room)
4154    })?;
4155
4156    if let Some(room) = open_room {
4157        let task = room.update(cx, |room, cx| {
4158            if let Some((project, host)) = room.most_active_project(cx) {
4159                return Some(join_in_room_project(project, host, app_state.clone(), cx));
4160            }
4161
4162            None
4163        })?;
4164        if let Some(task) = task {
4165            task.await?;
4166        }
4167        return anyhow::Ok(true);
4168    }
4169
4170    if should_prompt {
4171        if let Some(workspace) = requesting_window {
4172            let answer = workspace
4173                .update(cx, |_, cx| {
4174                    cx.prompt(
4175                        PromptLevel::Warning,
4176                        "Do you want to switch channels?",
4177                        Some("Leaving this call will unshare your current project."),
4178                        &["Yes, Join Channel", "Cancel"],
4179                    )
4180                })?
4181                .await;
4182
4183            if answer == Ok(1) {
4184                return Ok(false);
4185            }
4186        } else {
4187            return Ok(false); // unreachable!() hopefully
4188        }
4189    }
4190
4191    let client = cx.update(|cx| active_call.read(cx).client())?;
4192
4193    let mut client_status = client.status();
4194
4195    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
4196    'outer: loop {
4197        let Some(status) = client_status.recv().await else {
4198            return Err(anyhow!("error connecting"));
4199        };
4200
4201        match status {
4202            Status::Connecting
4203            | Status::Authenticating
4204            | Status::Reconnecting
4205            | Status::Reauthenticating => continue,
4206            Status::Connected { .. } => break 'outer,
4207            Status::SignedOut => return Err(ErrorCode::SignedOut.into()),
4208            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
4209            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
4210                return Err(ErrorCode::Disconnected.into());
4211            }
4212        }
4213    }
4214
4215    let room = active_call
4216        .update(cx, |active_call, cx| {
4217            active_call.join_channel(channel_id, cx)
4218        })?
4219        .await?;
4220
4221    let Some(room) = room else {
4222        return anyhow::Ok(true);
4223    };
4224
4225    room.update(cx, |room, _| room.room_update_completed())?
4226        .await;
4227
4228    let task = room.update(cx, |room, cx| {
4229        if let Some((project, host)) = room.most_active_project(cx) {
4230            return Some(join_in_room_project(project, host, app_state.clone(), cx));
4231        }
4232
4233        // if you are the first to join a channel, share your project
4234        if room.remote_participants().len() == 0 && !room.local_participant_is_guest() {
4235            if let Some(workspace) = requesting_window {
4236                let project = workspace.update(cx, |workspace, cx| {
4237                    if !CallSettings::get_global(cx).share_on_join {
4238                        return None;
4239                    }
4240                    let project = workspace.project.read(cx);
4241                    if project.is_local()
4242                        && project.visible_worktrees(cx).any(|tree| {
4243                            tree.read(cx)
4244                                .root_entry()
4245                                .map_or(false, |entry| entry.is_dir())
4246                        })
4247                    {
4248                        Some(workspace.project.clone())
4249                    } else {
4250                        None
4251                    }
4252                });
4253                if let Ok(Some(project)) = project {
4254                    return Some(cx.spawn(|room, mut cx| async move {
4255                        room.update(&mut cx, |room, cx| room.share_project(project, cx))?
4256                            .await?;
4257                        Ok(())
4258                    }));
4259                }
4260            }
4261        }
4262
4263        None
4264    })?;
4265    if let Some(task) = task {
4266        task.await?;
4267        return anyhow::Ok(true);
4268    }
4269    anyhow::Ok(false)
4270}
4271
4272pub fn join_channel(
4273    channel_id: ChannelId,
4274    app_state: Arc<AppState>,
4275    requesting_window: Option<WindowHandle<Workspace>>,
4276    cx: &mut AppContext,
4277) -> Task<Result<()>> {
4278    let active_call = ActiveCall::global(cx);
4279    cx.spawn(|mut cx| async move {
4280        let result = join_channel_internal(
4281            channel_id,
4282            &app_state,
4283            requesting_window,
4284            &active_call,
4285            &mut cx,
4286        )
4287            .await;
4288
4289        // join channel succeeded, and opened a window
4290        if matches!(result, Ok(true)) {
4291            return anyhow::Ok(());
4292        }
4293
4294        // find an existing workspace to focus and show call controls
4295        let mut active_window =
4296            requesting_window.or_else(|| activate_any_workspace_window(&mut cx));
4297        if active_window.is_none() {
4298            // no open workspaces, make one to show the error in (blergh)
4299            let (window_handle, _) = cx
4300                .update(|cx| {
4301                    Workspace::new_local(vec![], app_state.clone(), requesting_window, cx)
4302                })?
4303                .await?;
4304
4305            if result.is_ok() {
4306                cx.update(|cx| {
4307                    cx.dispatch_action(&OpenChannelNotes);
4308                }).log_err();
4309            }
4310
4311            active_window = Some(window_handle);
4312        }
4313
4314        if let Err(err) = result {
4315            log::error!("failed to join channel: {}", err);
4316            if let Some(active_window) = active_window {
4317                active_window
4318                    .update(&mut cx, |_, cx| {
4319                        let detail: SharedString = match err.error_code() {
4320                            ErrorCode::SignedOut => {
4321                                "Please sign in to continue.".into()
4322                            }
4323                            ErrorCode::UpgradeRequired => {
4324                                "Your are running an unsupported version of Zed. Please update to continue.".into()
4325                            }
4326                            ErrorCode::NoSuchChannel => {
4327                                "No matching channel was found. Please check the link and try again.".into()
4328                            }
4329                            ErrorCode::Forbidden => {
4330                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
4331                            }
4332                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
4333                            _ => format!("{}\n\nPlease try again.", err).into(),
4334                        };
4335                        cx.prompt(
4336                            PromptLevel::Critical,
4337                            "Failed to join channel",
4338                            Some(&detail),
4339                            &["Ok"],
4340                        )
4341                    })?
4342                    .await
4343                    .ok();
4344            }
4345        }
4346
4347        // return ok, we showed the error to the user.
4348        return anyhow::Ok(());
4349    })
4350}
4351
4352pub async fn get_any_active_workspace(
4353    app_state: Arc<AppState>,
4354    mut cx: AsyncAppContext,
4355) -> anyhow::Result<WindowHandle<Workspace>> {
4356    // find an existing workspace to focus and show call controls
4357    let active_window = activate_any_workspace_window(&mut cx);
4358    if active_window.is_none() {
4359        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, cx))?
4360            .await?;
4361    }
4362    activate_any_workspace_window(&mut cx).context("could not open zed")
4363}
4364
4365fn activate_any_workspace_window(cx: &mut AsyncAppContext) -> Option<WindowHandle<Workspace>> {
4366    cx.update(|cx| {
4367        for window in cx.windows() {
4368            if let Some(workspace_window) = window.downcast::<Workspace>() {
4369                workspace_window
4370                    .update(cx, |_, cx| cx.activate_window())
4371                    .ok();
4372                return Some(workspace_window);
4373            }
4374        }
4375        None
4376    })
4377    .ok()
4378    .flatten()
4379}
4380
4381#[allow(clippy::type_complexity)]
4382pub fn open_paths(
4383    abs_paths: &[PathBuf],
4384    app_state: &Arc<AppState>,
4385    requesting_window: Option<WindowHandle<Workspace>>,
4386    cx: &mut AppContext,
4387) -> Task<
4388    anyhow::Result<(
4389        WindowHandle<Workspace>,
4390        Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>,
4391    )>,
4392> {
4393    let app_state = app_state.clone();
4394    let abs_paths = abs_paths.to_vec();
4395    // Open paths in existing workspace if possible
4396    let existing = activate_workspace_for_project(cx, {
4397        let abs_paths = abs_paths.clone();
4398        move |project, cx| project.contains_paths(&abs_paths, cx)
4399    });
4400    cx.spawn(move |mut cx| async move {
4401        if let Some(existing) = existing {
4402            Ok((
4403                existing,
4404                existing
4405                    .update(&mut cx, |workspace, cx| {
4406                        workspace.open_paths(abs_paths, OpenVisible::All, None, cx)
4407                    })?
4408                    .await,
4409            ))
4410        } else {
4411            cx.update(move |cx| {
4412                Workspace::new_local(abs_paths, app_state.clone(), requesting_window, cx)
4413            })?
4414            .await
4415        }
4416    })
4417}
4418
4419pub fn open_new(
4420    app_state: &Arc<AppState>,
4421    cx: &mut AppContext,
4422    init: impl FnOnce(&mut Workspace, &mut ViewContext<Workspace>) + 'static + Send,
4423) -> Task<()> {
4424    let task = Workspace::new_local(Vec::new(), app_state.clone(), None, cx);
4425    cx.spawn(|mut cx| async move {
4426        if let Some((workspace, opened_paths)) = task.await.log_err() {
4427            workspace
4428                .update(&mut cx, |workspace, cx| {
4429                    if opened_paths.is_empty() {
4430                        init(workspace, cx)
4431                    }
4432                })
4433                .log_err();
4434        }
4435    })
4436}
4437
4438pub fn create_and_open_local_file(
4439    path: &'static Path,
4440    cx: &mut ViewContext<Workspace>,
4441    default_content: impl 'static + Send + FnOnce() -> Rope,
4442) -> Task<Result<Box<dyn ItemHandle>>> {
4443    cx.spawn(|workspace, mut cx| async move {
4444        let fs = workspace.update(&mut cx, |workspace, _| workspace.app_state().fs.clone())?;
4445        if !fs.is_file(path).await {
4446            fs.create_file(path, Default::default()).await?;
4447            fs.save(path, &default_content(), Default::default())
4448                .await?;
4449        }
4450
4451        let mut items = workspace
4452            .update(&mut cx, |workspace, cx| {
4453                workspace.with_local_workspace(cx, |workspace, cx| {
4454                    workspace.open_paths(vec![path.to_path_buf()], OpenVisible::None, None, cx)
4455                })
4456            })?
4457            .await?
4458            .await;
4459
4460        let item = items.pop().flatten();
4461        item.ok_or_else(|| anyhow!("path {path:?} is not a file"))?
4462    })
4463}
4464
4465pub fn join_hosted_project(
4466    hosted_project_id: HostedProjectId,
4467    app_state: Arc<AppState>,
4468    cx: &mut AppContext,
4469) -> Task<Result<()>> {
4470    cx.spawn(|mut cx| async move {
4471        let existing_window = cx.update(|cx| {
4472            cx.windows().into_iter().find_map(|window| {
4473                let workspace = window.downcast::<Workspace>()?;
4474                workspace
4475                    .read(cx)
4476                    .is_ok_and(|workspace| {
4477                        workspace.project().read(cx).hosted_project_id() == Some(hosted_project_id)
4478                    })
4479                    .then(|| workspace)
4480            })
4481        })?;
4482
4483        let workspace = if let Some(existing_window) = existing_window {
4484            existing_window
4485        } else {
4486            let project = Project::hosted(
4487                hosted_project_id,
4488                app_state.user_store.clone(),
4489                app_state.client.clone(),
4490                app_state.languages.clone(),
4491                app_state.fs.clone(),
4492                cx.clone(),
4493            )
4494            .await?;
4495
4496            let window_bounds_override = window_bounds_env_override(&cx);
4497            cx.update(|cx| {
4498                let options = (app_state.build_window_options)(window_bounds_override, None, cx);
4499                cx.open_window(options, |cx| {
4500                    cx.new_view(|cx| Workspace::new(0, project, app_state.clone(), cx))
4501                })
4502            })?
4503        };
4504
4505        workspace.update(&mut cx, |_, cx| {
4506            cx.activate(true);
4507            cx.activate_window();
4508        })?;
4509
4510        Ok(())
4511    })
4512}
4513
4514pub fn join_in_room_project(
4515    project_id: u64,
4516    follow_user_id: u64,
4517    app_state: Arc<AppState>,
4518    cx: &mut AppContext,
4519) -> Task<Result<()>> {
4520    let windows = cx.windows();
4521    cx.spawn(|mut cx| async move {
4522        let existing_workspace = windows.into_iter().find_map(|window| {
4523            window.downcast::<Workspace>().and_then(|window| {
4524                window
4525                    .update(&mut cx, |workspace, cx| {
4526                        if workspace.project().read(cx).remote_id() == Some(project_id) {
4527                            Some(window)
4528                        } else {
4529                            None
4530                        }
4531                    })
4532                    .unwrap_or(None)
4533            })
4534        });
4535
4536        let workspace = if let Some(existing_workspace) = existing_workspace {
4537            existing_workspace
4538        } else {
4539            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
4540            let room = active_call
4541                .read_with(&cx, |call, _| call.room().cloned())?
4542                .ok_or_else(|| anyhow!("not in a call"))?;
4543            let project = room
4544                .update(&mut cx, |room, cx| {
4545                    room.join_project(
4546                        project_id,
4547                        app_state.languages.clone(),
4548                        app_state.fs.clone(),
4549                        cx,
4550                    )
4551                })?
4552                .await?;
4553
4554            let window_bounds_override = window_bounds_env_override(&cx);
4555            cx.update(|cx| {
4556                let options = (app_state.build_window_options)(window_bounds_override, None, cx);
4557                cx.open_window(options, |cx| {
4558                    cx.new_view(|cx| Workspace::new(0, project, app_state.clone(), cx))
4559                })
4560            })?
4561        };
4562
4563        workspace.update(&mut cx, |workspace, cx| {
4564            cx.activate(true);
4565            cx.activate_window();
4566
4567            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
4568                let follow_peer_id = room
4569                    .read(cx)
4570                    .remote_participants()
4571                    .iter()
4572                    .find(|(_, participant)| participant.user.id == follow_user_id)
4573                    .map(|(_, p)| p.peer_id)
4574                    .or_else(|| {
4575                        // If we couldn't follow the given user, follow the host instead.
4576                        let collaborator = workspace
4577                            .project()
4578                            .read(cx)
4579                            .collaborators()
4580                            .values()
4581                            .find(|collaborator| collaborator.replica_id == 0)?;
4582                        Some(collaborator.peer_id)
4583                    });
4584
4585                if let Some(follow_peer_id) = follow_peer_id {
4586                    workspace.follow(follow_peer_id, cx);
4587                }
4588            }
4589        })?;
4590
4591        anyhow::Ok(())
4592    })
4593}
4594
4595pub fn restart(_: &Restart, cx: &mut AppContext) {
4596    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
4597    let mut workspace_windows = cx
4598        .windows()
4599        .into_iter()
4600        .filter_map(|window| window.downcast::<Workspace>())
4601        .collect::<Vec<_>>();
4602
4603    // If multiple windows have unsaved changes, and need a save prompt,
4604    // prompt in the active window before switching to a different window.
4605    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
4606
4607    let mut prompt = None;
4608    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
4609        prompt = window
4610            .update(cx, |_, cx| {
4611                cx.prompt(
4612                    PromptLevel::Info,
4613                    "Are you sure you want to restart?",
4614                    None,
4615                    &["Restart", "Cancel"],
4616                )
4617            })
4618            .ok();
4619    }
4620
4621    cx.spawn(|mut cx| async move {
4622        if let Some(prompt) = prompt {
4623            let answer = prompt.await?;
4624            if answer != 0 {
4625                return Ok(());
4626            }
4627        }
4628
4629        // If the user cancels any save prompt, then keep the app open.
4630        for window in workspace_windows {
4631            if let Ok(should_close) = window.update(&mut cx, |workspace, cx| {
4632                workspace.prepare_to_close(true, cx)
4633            }) {
4634                if !should_close.await? {
4635                    return Ok(());
4636                }
4637            }
4638        }
4639
4640        cx.update(|cx| cx.restart())
4641    })
4642    .detach_and_log_err(cx);
4643}
4644
4645fn parse_pixel_position_env_var(value: &str) -> Option<Point<GlobalPixels>> {
4646    let mut parts = value.split(',');
4647    let x: usize = parts.next()?.parse().ok()?;
4648    let y: usize = parts.next()?.parse().ok()?;
4649    Some(point((x as f64).into(), (y as f64).into()))
4650}
4651
4652fn parse_pixel_size_env_var(value: &str) -> Option<Size<GlobalPixels>> {
4653    let mut parts = value.split(',');
4654    let width: usize = parts.next()?.parse().ok()?;
4655    let height: usize = parts.next()?.parse().ok()?;
4656    Some(size((width as f64).into(), (height as f64).into()))
4657}
4658
4659pub fn titlebar_height(cx: &mut WindowContext) -> Pixels {
4660    (1.75 * cx.rem_size()).max(px(32.))
4661}
4662
4663struct DisconnectedOverlay;
4664
4665impl Element for DisconnectedOverlay {
4666    type State = AnyElement;
4667
4668    fn request_layout(
4669        &mut self,
4670        _: Option<Self::State>,
4671        cx: &mut ElementContext,
4672    ) -> (LayoutId, Self::State) {
4673        let mut background = cx.theme().colors().elevated_surface_background;
4674        background.fade_out(0.2);
4675        let mut overlay = div()
4676            .bg(background)
4677            .absolute()
4678            .left_0()
4679            .top(titlebar_height(cx))
4680            .size_full()
4681            .flex()
4682            .items_center()
4683            .justify_center()
4684            .capture_any_mouse_down(|_, cx| cx.stop_propagation())
4685            .capture_any_mouse_up(|_, cx| cx.stop_propagation())
4686            .child(Label::new(
4687                "Your connection to the remote project has been lost.",
4688            ))
4689            .into_any();
4690        (overlay.request_layout(cx), overlay)
4691    }
4692
4693    fn paint(
4694        &mut self,
4695        bounds: Bounds<Pixels>,
4696        overlay: &mut Self::State,
4697        cx: &mut ElementContext,
4698    ) {
4699        cx.with_z_index(u16::MAX, |cx| {
4700            cx.add_opaque_layer(bounds);
4701            overlay.paint(cx);
4702        })
4703    }
4704}
4705
4706impl IntoElement for DisconnectedOverlay {
4707    type Element = Self;
4708
4709    fn element_id(&self) -> Option<ui::prelude::ElementId> {
4710        None
4711    }
4712
4713    fn into_element(self) -> Self::Element {
4714        self
4715    }
4716}
4717
4718#[cfg(test)]
4719mod tests {
4720    use std::{cell::RefCell, rc::Rc};
4721
4722    use super::*;
4723    use crate::{
4724        dock::{test::TestPanel, PanelEvent},
4725        item::{
4726            test::{TestItem, TestProjectItem},
4727            ItemEvent,
4728        },
4729    };
4730    use fs::FakeFs;
4731    use gpui::{px, DismissEvent, TestAppContext, VisualTestContext};
4732    use project::{Project, ProjectEntryId};
4733    use serde_json::json;
4734    use settings::SettingsStore;
4735
4736    #[gpui::test]
4737    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
4738        init_test(cx);
4739
4740        let fs = FakeFs::new(cx.executor());
4741        let project = Project::test(fs, [], cx).await;
4742        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
4743
4744        // Adding an item with no ambiguity renders the tab without detail.
4745        let item1 = cx.new_view(|cx| {
4746            let mut item = TestItem::new(cx);
4747            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
4748            item
4749        });
4750        workspace.update(cx, |workspace, cx| {
4751            workspace.add_item_to_active_pane(Box::new(item1.clone()), cx);
4752        });
4753        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
4754
4755        // Adding an item that creates ambiguity increases the level of detail on
4756        // both tabs.
4757        let item2 = cx.new_view(|cx| {
4758            let mut item = TestItem::new(cx);
4759            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
4760            item
4761        });
4762        workspace.update(cx, |workspace, cx| {
4763            workspace.add_item_to_active_pane(Box::new(item2.clone()), cx);
4764        });
4765        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
4766        item2.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
4767
4768        // Adding an item that creates ambiguity increases the level of detail only
4769        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
4770        // we stop at the highest detail available.
4771        let item3 = cx.new_view(|cx| {
4772            let mut item = TestItem::new(cx);
4773            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
4774            item
4775        });
4776        workspace.update(cx, |workspace, cx| {
4777            workspace.add_item_to_active_pane(Box::new(item3.clone()), cx);
4778        });
4779        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
4780        item2.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
4781        item3.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
4782    }
4783
4784    #[gpui::test]
4785    async fn test_tracking_active_path(cx: &mut TestAppContext) {
4786        init_test(cx);
4787
4788        let fs = FakeFs::new(cx.executor());
4789        fs.insert_tree(
4790            "/root1",
4791            json!({
4792                "one.txt": "",
4793                "two.txt": "",
4794            }),
4795        )
4796        .await;
4797        fs.insert_tree(
4798            "/root2",
4799            json!({
4800                "three.txt": "",
4801            }),
4802        )
4803        .await;
4804
4805        let project = Project::test(fs, ["root1".as_ref()], cx).await;
4806        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
4807        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
4808        let worktree_id = project.update(cx, |project, cx| {
4809            project.worktrees().next().unwrap().read(cx).id()
4810        });
4811
4812        let item1 = cx.new_view(|cx| {
4813            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
4814        });
4815        let item2 = cx.new_view(|cx| {
4816            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
4817        });
4818
4819        // Add an item to an empty pane
4820        workspace.update(cx, |workspace, cx| {
4821            workspace.add_item_to_active_pane(Box::new(item1), cx)
4822        });
4823        project.update(cx, |project, cx| {
4824            assert_eq!(
4825                project.active_entry(),
4826                project
4827                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
4828                    .map(|e| e.id)
4829            );
4830        });
4831        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root1"));
4832
4833        // Add a second item to a non-empty pane
4834        workspace.update(cx, |workspace, cx| {
4835            workspace.add_item_to_active_pane(Box::new(item2), cx)
4836        });
4837        assert_eq!(cx.window_title().as_deref(), Some("two.txt — root1"));
4838        project.update(cx, |project, cx| {
4839            assert_eq!(
4840                project.active_entry(),
4841                project
4842                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
4843                    .map(|e| e.id)
4844            );
4845        });
4846
4847        // Close the active item
4848        pane.update(cx, |pane, cx| {
4849            pane.close_active_item(&Default::default(), cx).unwrap()
4850        })
4851        .await
4852        .unwrap();
4853        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root1"));
4854        project.update(cx, |project, cx| {
4855            assert_eq!(
4856                project.active_entry(),
4857                project
4858                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
4859                    .map(|e| e.id)
4860            );
4861        });
4862
4863        // Add a project folder
4864        project
4865            .update(cx, |project, cx| {
4866                project.find_or_create_local_worktree("/root2", true, cx)
4867            })
4868            .await
4869            .unwrap();
4870        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root1, root2"));
4871
4872        // Remove a project folder
4873        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
4874        assert_eq!(cx.window_title().as_deref(), Some("one.txt — root2"));
4875    }
4876
4877    #[gpui::test]
4878    async fn test_close_window(cx: &mut TestAppContext) {
4879        init_test(cx);
4880
4881        let fs = FakeFs::new(cx.executor());
4882        fs.insert_tree("/root", json!({ "one": "" })).await;
4883
4884        let project = Project::test(fs, ["root".as_ref()], cx).await;
4885        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
4886
4887        // When there are no dirty items, there's nothing to do.
4888        let item1 = cx.new_view(|cx| TestItem::new(cx));
4889        workspace.update(cx, |w, cx| {
4890            w.add_item_to_active_pane(Box::new(item1.clone()), cx)
4891        });
4892        let task = workspace.update(cx, |w, cx| w.prepare_to_close(false, cx));
4893        assert!(task.await.unwrap());
4894
4895        // When there are dirty untitled items, prompt to save each one. If the user
4896        // cancels any prompt, then abort.
4897        let item2 = cx.new_view(|cx| TestItem::new(cx).with_dirty(true));
4898        let item3 = cx.new_view(|cx| {
4899            TestItem::new(cx)
4900                .with_dirty(true)
4901                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
4902        });
4903        workspace.update(cx, |w, cx| {
4904            w.add_item_to_active_pane(Box::new(item2.clone()), cx);
4905            w.add_item_to_active_pane(Box::new(item3.clone()), cx);
4906        });
4907        let task = workspace.update(cx, |w, cx| w.prepare_to_close(false, cx));
4908        cx.executor().run_until_parked();
4909        cx.simulate_prompt_answer(2); // cancel save all
4910        cx.executor().run_until_parked();
4911        cx.simulate_prompt_answer(2); // cancel save all
4912        cx.executor().run_until_parked();
4913        assert!(!cx.has_pending_prompt());
4914        assert!(!task.await.unwrap());
4915    }
4916
4917    #[gpui::test]
4918    async fn test_close_pane_items(cx: &mut TestAppContext) {
4919        init_test(cx);
4920
4921        let fs = FakeFs::new(cx.executor());
4922
4923        let project = Project::test(fs, None, cx).await;
4924        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
4925
4926        let item1 = cx.new_view(|cx| {
4927            TestItem::new(cx)
4928                .with_dirty(true)
4929                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
4930        });
4931        let item2 = cx.new_view(|cx| {
4932            TestItem::new(cx)
4933                .with_dirty(true)
4934                .with_conflict(true)
4935                .with_project_items(&[TestProjectItem::new(2, "2.txt", cx)])
4936        });
4937        let item3 = cx.new_view(|cx| {
4938            TestItem::new(cx)
4939                .with_dirty(true)
4940                .with_conflict(true)
4941                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
4942        });
4943        let item4 = cx.new_view(|cx| {
4944            TestItem::new(cx)
4945                .with_dirty(true)
4946                .with_project_items(&[TestProjectItem::new_untitled(cx)])
4947        });
4948        let pane = workspace.update(cx, |workspace, cx| {
4949            workspace.add_item_to_active_pane(Box::new(item1.clone()), cx);
4950            workspace.add_item_to_active_pane(Box::new(item2.clone()), cx);
4951            workspace.add_item_to_active_pane(Box::new(item3.clone()), cx);
4952            workspace.add_item_to_active_pane(Box::new(item4.clone()), cx);
4953            workspace.active_pane().clone()
4954        });
4955
4956        let close_items = pane.update(cx, |pane, cx| {
4957            pane.activate_item(1, true, true, cx);
4958            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
4959            let item1_id = item1.item_id();
4960            let item3_id = item3.item_id();
4961            let item4_id = item4.item_id();
4962            pane.close_items(cx, SaveIntent::Close, move |id| {
4963                [item1_id, item3_id, item4_id].contains(&id)
4964            })
4965        });
4966        cx.executor().run_until_parked();
4967
4968        assert!(cx.has_pending_prompt());
4969        // Ignore "Save all" prompt
4970        cx.simulate_prompt_answer(2);
4971        cx.executor().run_until_parked();
4972        // There's a prompt to save item 1.
4973        pane.update(cx, |pane, _| {
4974            assert_eq!(pane.items_len(), 4);
4975            assert_eq!(pane.active_item().unwrap().item_id(), item1.item_id());
4976        });
4977        // Confirm saving item 1.
4978        cx.simulate_prompt_answer(0);
4979        cx.executor().run_until_parked();
4980
4981        // Item 1 is saved. There's a prompt to save item 3.
4982        pane.update(cx, |pane, cx| {
4983            assert_eq!(item1.read(cx).save_count, 1);
4984            assert_eq!(item1.read(cx).save_as_count, 0);
4985            assert_eq!(item1.read(cx).reload_count, 0);
4986            assert_eq!(pane.items_len(), 3);
4987            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
4988        });
4989        assert!(cx.has_pending_prompt());
4990
4991        // Cancel saving item 3.
4992        cx.simulate_prompt_answer(1);
4993        cx.executor().run_until_parked();
4994
4995        // Item 3 is reloaded. There's a prompt to save item 4.
4996        pane.update(cx, |pane, cx| {
4997            assert_eq!(item3.read(cx).save_count, 0);
4998            assert_eq!(item3.read(cx).save_as_count, 0);
4999            assert_eq!(item3.read(cx).reload_count, 1);
5000            assert_eq!(pane.items_len(), 2);
5001            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
5002        });
5003        assert!(cx.has_pending_prompt());
5004
5005        // Confirm saving item 4.
5006        cx.simulate_prompt_answer(0);
5007        cx.executor().run_until_parked();
5008
5009        // There's a prompt for a path for item 4.
5010        cx.simulate_new_path_selection(|_| Some(Default::default()));
5011        close_items.await.unwrap();
5012
5013        // The requested items are closed.
5014        pane.update(cx, |pane, cx| {
5015            assert_eq!(item4.read(cx).save_count, 0);
5016            assert_eq!(item4.read(cx).save_as_count, 1);
5017            assert_eq!(item4.read(cx).reload_count, 0);
5018            assert_eq!(pane.items_len(), 1);
5019            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
5020        });
5021    }
5022
5023    #[gpui::test]
5024    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
5025        init_test(cx);
5026
5027        let fs = FakeFs::new(cx.executor());
5028        let project = Project::test(fs, [], cx).await;
5029        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5030
5031        // Create several workspace items with single project entries, and two
5032        // workspace items with multiple project entries.
5033        let single_entry_items = (0..=4)
5034            .map(|project_entry_id| {
5035                cx.new_view(|cx| {
5036                    TestItem::new(cx)
5037                        .with_dirty(true)
5038                        .with_project_items(&[TestProjectItem::new(
5039                            project_entry_id,
5040                            &format!("{project_entry_id}.txt"),
5041                            cx,
5042                        )])
5043                })
5044            })
5045            .collect::<Vec<_>>();
5046        let item_2_3 = cx.new_view(|cx| {
5047            TestItem::new(cx)
5048                .with_dirty(true)
5049                .with_singleton(false)
5050                .with_project_items(&[
5051                    single_entry_items[2].read(cx).project_items[0].clone(),
5052                    single_entry_items[3].read(cx).project_items[0].clone(),
5053                ])
5054        });
5055        let item_3_4 = cx.new_view(|cx| {
5056            TestItem::new(cx)
5057                .with_dirty(true)
5058                .with_singleton(false)
5059                .with_project_items(&[
5060                    single_entry_items[3].read(cx).project_items[0].clone(),
5061                    single_entry_items[4].read(cx).project_items[0].clone(),
5062                ])
5063        });
5064
5065        // Create two panes that contain the following project entries:
5066        //   left pane:
5067        //     multi-entry items:   (2, 3)
5068        //     single-entry items:  0, 1, 2, 3, 4
5069        //   right pane:
5070        //     single-entry items:  1
5071        //     multi-entry items:   (3, 4)
5072        let left_pane = workspace.update(cx, |workspace, cx| {
5073            let left_pane = workspace.active_pane().clone();
5074            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), cx);
5075            for item in single_entry_items {
5076                workspace.add_item_to_active_pane(Box::new(item), cx);
5077            }
5078            left_pane.update(cx, |pane, cx| {
5079                pane.activate_item(2, true, true, cx);
5080            });
5081
5082            let right_pane = workspace
5083                .split_and_clone(left_pane.clone(), SplitDirection::Right, cx)
5084                .unwrap();
5085
5086            right_pane.update(cx, |pane, cx| {
5087                pane.add_item(Box::new(item_3_4.clone()), true, true, None, cx);
5088            });
5089
5090            left_pane
5091        });
5092
5093        cx.focus_view(&left_pane);
5094
5095        // When closing all of the items in the left pane, we should be prompted twice:
5096        // once for project entry 0, and once for project entry 2. Project entries 1,
5097        // 3, and 4 are all still open in the other paten. After those two
5098        // prompts, the task should complete.
5099
5100        let close = left_pane.update(cx, |pane, cx| {
5101            pane.close_all_items(&CloseAllItems::default(), cx).unwrap()
5102        });
5103        cx.executor().run_until_parked();
5104
5105        // Discard "Save all" prompt
5106        cx.simulate_prompt_answer(2);
5107
5108        cx.executor().run_until_parked();
5109        left_pane.update(cx, |pane, cx| {
5110            assert_eq!(
5111                pane.active_item().unwrap().project_entry_ids(cx).as_slice(),
5112                &[ProjectEntryId::from_proto(0)]
5113            );
5114        });
5115        cx.simulate_prompt_answer(0);
5116
5117        cx.executor().run_until_parked();
5118        left_pane.update(cx, |pane, cx| {
5119            assert_eq!(
5120                pane.active_item().unwrap().project_entry_ids(cx).as_slice(),
5121                &[ProjectEntryId::from_proto(2)]
5122            );
5123        });
5124        cx.simulate_prompt_answer(0);
5125
5126        cx.executor().run_until_parked();
5127        close.await.unwrap();
5128        left_pane.update(cx, |pane, _| {
5129            assert_eq!(pane.items_len(), 0);
5130        });
5131    }
5132
5133    #[gpui::test]
5134    async fn test_autosave(cx: &mut gpui::TestAppContext) {
5135        init_test(cx);
5136
5137        let fs = FakeFs::new(cx.executor());
5138        let project = Project::test(fs, [], cx).await;
5139        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5140        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
5141
5142        let item = cx.new_view(|cx| {
5143            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
5144        });
5145        let item_id = item.entity_id();
5146        workspace.update(cx, |workspace, cx| {
5147            workspace.add_item_to_active_pane(Box::new(item.clone()), cx);
5148        });
5149
5150        // Autosave on window change.
5151        item.update(cx, |item, cx| {
5152            cx.update_global(|settings: &mut SettingsStore, cx| {
5153                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5154                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
5155                })
5156            });
5157            item.is_dirty = true;
5158        });
5159
5160        // Deactivating the window saves the file.
5161        cx.deactivate_window();
5162        item.update(cx, |item, _| assert_eq!(item.save_count, 1));
5163
5164        // Autosave on focus change.
5165        item.update(cx, |item, cx| {
5166            cx.focus_self();
5167            cx.update_global(|settings: &mut SettingsStore, cx| {
5168                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5169                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
5170                })
5171            });
5172            item.is_dirty = true;
5173        });
5174
5175        // Blurring the item saves the file.
5176        item.update(cx, |_, cx| cx.blur());
5177        cx.executor().run_until_parked();
5178        item.update(cx, |item, _| assert_eq!(item.save_count, 2));
5179
5180        // Deactivating the window still saves the file.
5181        cx.update(|cx| cx.activate_window());
5182        item.update(cx, |item, cx| {
5183            cx.focus_self();
5184            item.is_dirty = true;
5185        });
5186        cx.deactivate_window();
5187
5188        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
5189
5190        // Autosave after delay.
5191        item.update(cx, |item, cx| {
5192            cx.update_global(|settings: &mut SettingsStore, cx| {
5193                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5194                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
5195                })
5196            });
5197            item.is_dirty = true;
5198            cx.emit(ItemEvent::Edit);
5199        });
5200
5201        // Delay hasn't fully expired, so the file is still dirty and unsaved.
5202        cx.executor().advance_clock(Duration::from_millis(250));
5203        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
5204
5205        // After delay expires, the file is saved.
5206        cx.executor().advance_clock(Duration::from_millis(250));
5207        item.update(cx, |item, _| assert_eq!(item.save_count, 4));
5208
5209        // Autosave on focus change, ensuring closing the tab counts as such.
5210        item.update(cx, |item, cx| {
5211            cx.update_global(|settings: &mut SettingsStore, cx| {
5212                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
5213                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
5214                })
5215            });
5216            item.is_dirty = true;
5217        });
5218
5219        pane.update(cx, |pane, cx| {
5220            pane.close_items(cx, SaveIntent::Close, move |id| id == item_id)
5221        })
5222        .await
5223        .unwrap();
5224        assert!(!cx.has_pending_prompt());
5225        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
5226
5227        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
5228        workspace.update(cx, |workspace, cx| {
5229            workspace.add_item_to_active_pane(Box::new(item.clone()), cx);
5230        });
5231        item.update(cx, |item, cx| {
5232            item.project_items[0].update(cx, |item, _| {
5233                item.entry_id = None;
5234            });
5235            item.is_dirty = true;
5236            cx.blur();
5237        });
5238        cx.run_until_parked();
5239        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
5240
5241        // Ensure autosave is prevented for deleted files also when closing the buffer.
5242        let _close_items = pane.update(cx, |pane, cx| {
5243            pane.close_items(cx, SaveIntent::Close, move |id| id == item_id)
5244        });
5245        cx.run_until_parked();
5246        assert!(cx.has_pending_prompt());
5247        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
5248    }
5249
5250    #[gpui::test]
5251    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
5252        init_test(cx);
5253
5254        let fs = FakeFs::new(cx.executor());
5255
5256        let project = Project::test(fs, [], cx).await;
5257        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5258
5259        let item = cx.new_view(|cx| {
5260            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
5261        });
5262        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
5263        let toolbar = pane.update(cx, |pane, _| pane.toolbar().clone());
5264        let toolbar_notify_count = Rc::new(RefCell::new(0));
5265
5266        workspace.update(cx, |workspace, cx| {
5267            workspace.add_item_to_active_pane(Box::new(item.clone()), cx);
5268            let toolbar_notification_count = toolbar_notify_count.clone();
5269            cx.observe(&toolbar, move |_, _, _| {
5270                *toolbar_notification_count.borrow_mut() += 1
5271            })
5272            .detach();
5273        });
5274
5275        pane.update(cx, |pane, _| {
5276            assert!(!pane.can_navigate_backward());
5277            assert!(!pane.can_navigate_forward());
5278        });
5279
5280        item.update(cx, |item, cx| {
5281            item.set_state("one".to_string(), cx);
5282        });
5283
5284        // Toolbar must be notified to re-render the navigation buttons
5285        assert_eq!(*toolbar_notify_count.borrow(), 1);
5286
5287        pane.update(cx, |pane, _| {
5288            assert!(pane.can_navigate_backward());
5289            assert!(!pane.can_navigate_forward());
5290        });
5291
5292        workspace
5293            .update(cx, |workspace, cx| workspace.go_back(pane.downgrade(), cx))
5294            .await
5295            .unwrap();
5296
5297        assert_eq!(*toolbar_notify_count.borrow(), 2);
5298        pane.update(cx, |pane, _| {
5299            assert!(!pane.can_navigate_backward());
5300            assert!(pane.can_navigate_forward());
5301        });
5302    }
5303
5304    #[gpui::test]
5305    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
5306        init_test(cx);
5307        let fs = FakeFs::new(cx.executor());
5308
5309        let project = Project::test(fs, [], cx).await;
5310        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5311
5312        let panel = workspace.update(cx, |workspace, cx| {
5313            let panel = cx.new_view(|cx| TestPanel::new(DockPosition::Right, cx));
5314            workspace.add_panel(panel.clone(), cx);
5315
5316            workspace
5317                .right_dock()
5318                .update(cx, |right_dock, cx| right_dock.set_open(true, cx));
5319
5320            panel
5321        });
5322
5323        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
5324        pane.update(cx, |pane, cx| {
5325            let item = cx.new_view(|cx| TestItem::new(cx));
5326            pane.add_item(Box::new(item), true, true, None, cx);
5327        });
5328
5329        // Transfer focus from center to panel
5330        workspace.update(cx, |workspace, cx| {
5331            workspace.toggle_panel_focus::<TestPanel>(cx);
5332        });
5333
5334        workspace.update(cx, |workspace, cx| {
5335            assert!(workspace.right_dock().read(cx).is_open());
5336            assert!(!panel.is_zoomed(cx));
5337            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5338        });
5339
5340        // Transfer focus from panel to center
5341        workspace.update(cx, |workspace, cx| {
5342            workspace.toggle_panel_focus::<TestPanel>(cx);
5343        });
5344
5345        workspace.update(cx, |workspace, cx| {
5346            assert!(workspace.right_dock().read(cx).is_open());
5347            assert!(!panel.is_zoomed(cx));
5348            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5349        });
5350
5351        // Close the dock
5352        workspace.update(cx, |workspace, cx| {
5353            workspace.toggle_dock(DockPosition::Right, cx);
5354        });
5355
5356        workspace.update(cx, |workspace, cx| {
5357            assert!(!workspace.right_dock().read(cx).is_open());
5358            assert!(!panel.is_zoomed(cx));
5359            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5360        });
5361
5362        // Open the dock
5363        workspace.update(cx, |workspace, cx| {
5364            workspace.toggle_dock(DockPosition::Right, cx);
5365        });
5366
5367        workspace.update(cx, |workspace, cx| {
5368            assert!(workspace.right_dock().read(cx).is_open());
5369            assert!(!panel.is_zoomed(cx));
5370            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5371        });
5372
5373        // Focus and zoom panel
5374        panel.update(cx, |panel, cx| {
5375            cx.focus_self();
5376            panel.set_zoomed(true, cx)
5377        });
5378
5379        workspace.update(cx, |workspace, cx| {
5380            assert!(workspace.right_dock().read(cx).is_open());
5381            assert!(panel.is_zoomed(cx));
5382            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5383        });
5384
5385        // Transfer focus to the center closes the dock
5386        workspace.update(cx, |workspace, cx| {
5387            workspace.toggle_panel_focus::<TestPanel>(cx);
5388        });
5389
5390        workspace.update(cx, |workspace, cx| {
5391            assert!(!workspace.right_dock().read(cx).is_open());
5392            assert!(panel.is_zoomed(cx));
5393            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5394        });
5395
5396        // Transferring focus back to the panel keeps it zoomed
5397        workspace.update(cx, |workspace, cx| {
5398            workspace.toggle_panel_focus::<TestPanel>(cx);
5399        });
5400
5401        workspace.update(cx, |workspace, cx| {
5402            assert!(workspace.right_dock().read(cx).is_open());
5403            assert!(panel.is_zoomed(cx));
5404            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5405        });
5406
5407        // Close the dock while it is zoomed
5408        workspace.update(cx, |workspace, cx| {
5409            workspace.toggle_dock(DockPosition::Right, cx)
5410        });
5411
5412        workspace.update(cx, |workspace, cx| {
5413            assert!(!workspace.right_dock().read(cx).is_open());
5414            assert!(panel.is_zoomed(cx));
5415            assert!(workspace.zoomed.is_none());
5416            assert!(!panel.read(cx).focus_handle(cx).contains_focused(cx));
5417        });
5418
5419        // Opening the dock, when it's zoomed, retains focus
5420        workspace.update(cx, |workspace, cx| {
5421            workspace.toggle_dock(DockPosition::Right, cx)
5422        });
5423
5424        workspace.update(cx, |workspace, cx| {
5425            assert!(workspace.right_dock().read(cx).is_open());
5426            assert!(panel.is_zoomed(cx));
5427            assert!(workspace.zoomed.is_some());
5428            assert!(panel.read(cx).focus_handle(cx).contains_focused(cx));
5429        });
5430
5431        // Unzoom and close the panel, zoom the active pane.
5432        panel.update(cx, |panel, cx| panel.set_zoomed(false, cx));
5433        workspace.update(cx, |workspace, cx| {
5434            workspace.toggle_dock(DockPosition::Right, cx)
5435        });
5436        pane.update(cx, |pane, cx| pane.toggle_zoom(&Default::default(), cx));
5437
5438        // Opening a dock unzooms the pane.
5439        workspace.update(cx, |workspace, cx| {
5440            workspace.toggle_dock(DockPosition::Right, cx)
5441        });
5442        workspace.update(cx, |workspace, cx| {
5443            let pane = pane.read(cx);
5444            assert!(!pane.is_zoomed());
5445            assert!(!pane.focus_handle(cx).is_focused(cx));
5446            assert!(workspace.right_dock().read(cx).is_open());
5447            assert!(workspace.zoomed.is_none());
5448        });
5449    }
5450
5451    struct TestModal(FocusHandle);
5452
5453    impl TestModal {
5454        fn new(cx: &mut ViewContext<Self>) -> Self {
5455            Self(cx.focus_handle())
5456        }
5457    }
5458
5459    impl EventEmitter<DismissEvent> for TestModal {}
5460
5461    impl FocusableView for TestModal {
5462        fn focus_handle(&self, _cx: &AppContext) -> FocusHandle {
5463            self.0.clone()
5464        }
5465    }
5466
5467    impl ModalView for TestModal {}
5468
5469    impl Render for TestModal {
5470        fn render(&mut self, _cx: &mut ViewContext<TestModal>) -> impl IntoElement {
5471            div().track_focus(&self.0)
5472        }
5473    }
5474
5475    #[gpui::test]
5476    async fn test_panels(cx: &mut gpui::TestAppContext) {
5477        init_test(cx);
5478        let fs = FakeFs::new(cx.executor());
5479
5480        let project = Project::test(fs, [], cx).await;
5481        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project, cx));
5482
5483        let (panel_1, panel_2) = workspace.update(cx, |workspace, cx| {
5484            let panel_1 = cx.new_view(|cx| TestPanel::new(DockPosition::Left, cx));
5485            workspace.add_panel(panel_1.clone(), cx);
5486            workspace
5487                .left_dock()
5488                .update(cx, |left_dock, cx| left_dock.set_open(true, cx));
5489            let panel_2 = cx.new_view(|cx| TestPanel::new(DockPosition::Right, cx));
5490            workspace.add_panel(panel_2.clone(), cx);
5491            workspace
5492                .right_dock()
5493                .update(cx, |right_dock, cx| right_dock.set_open(true, cx));
5494
5495            let left_dock = workspace.left_dock();
5496            assert_eq!(
5497                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5498                panel_1.panel_id()
5499            );
5500            assert_eq!(
5501                left_dock.read(cx).active_panel_size(cx).unwrap(),
5502                panel_1.size(cx)
5503            );
5504
5505            left_dock.update(cx, |left_dock, cx| {
5506                left_dock.resize_active_panel(Some(px(1337.)), cx)
5507            });
5508            assert_eq!(
5509                workspace
5510                    .right_dock()
5511                    .read(cx)
5512                    .visible_panel()
5513                    .unwrap()
5514                    .panel_id(),
5515                panel_2.panel_id(),
5516            );
5517
5518            (panel_1, panel_2)
5519        });
5520
5521        // Move panel_1 to the right
5522        panel_1.update(cx, |panel_1, cx| {
5523            panel_1.set_position(DockPosition::Right, cx)
5524        });
5525
5526        workspace.update(cx, |workspace, cx| {
5527            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
5528            // Since it was the only panel on the left, the left dock should now be closed.
5529            assert!(!workspace.left_dock().read(cx).is_open());
5530            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
5531            let right_dock = workspace.right_dock();
5532            assert_eq!(
5533                right_dock.read(cx).visible_panel().unwrap().panel_id(),
5534                panel_1.panel_id()
5535            );
5536            assert_eq!(
5537                right_dock.read(cx).active_panel_size(cx).unwrap(),
5538                px(1337.)
5539            );
5540
5541            // Now we move panel_2 to the left
5542            panel_2.set_position(DockPosition::Left, cx);
5543        });
5544
5545        workspace.update(cx, |workspace, cx| {
5546            // Since panel_2 was not visible on the right, we don't open the left dock.
5547            assert!(!workspace.left_dock().read(cx).is_open());
5548            // And the right dock is unaffected in its displaying of panel_1
5549            assert!(workspace.right_dock().read(cx).is_open());
5550            assert_eq!(
5551                workspace
5552                    .right_dock()
5553                    .read(cx)
5554                    .visible_panel()
5555                    .unwrap()
5556                    .panel_id(),
5557                panel_1.panel_id(),
5558            );
5559        });
5560
5561        // Move panel_1 back to the left
5562        panel_1.update(cx, |panel_1, cx| {
5563            panel_1.set_position(DockPosition::Left, cx)
5564        });
5565
5566        workspace.update(cx, |workspace, cx| {
5567            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
5568            let left_dock = workspace.left_dock();
5569            assert!(left_dock.read(cx).is_open());
5570            assert_eq!(
5571                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5572                panel_1.panel_id()
5573            );
5574            assert_eq!(left_dock.read(cx).active_panel_size(cx).unwrap(), px(1337.));
5575            // And the right dock should be closed as it no longer has any panels.
5576            assert!(!workspace.right_dock().read(cx).is_open());
5577
5578            // Now we move panel_1 to the bottom
5579            panel_1.set_position(DockPosition::Bottom, cx);
5580        });
5581
5582        workspace.update(cx, |workspace, cx| {
5583            // Since panel_1 was visible on the left, we close the left dock.
5584            assert!(!workspace.left_dock().read(cx).is_open());
5585            // The bottom dock is sized based on the panel's default size,
5586            // since the panel orientation changed from vertical to horizontal.
5587            let bottom_dock = workspace.bottom_dock();
5588            assert_eq!(
5589                bottom_dock.read(cx).active_panel_size(cx).unwrap(),
5590                panel_1.size(cx),
5591            );
5592            // Close bottom dock and move panel_1 back to the left.
5593            bottom_dock.update(cx, |bottom_dock, cx| bottom_dock.set_open(false, cx));
5594            panel_1.set_position(DockPosition::Left, cx);
5595        });
5596
5597        // Emit activated event on panel 1
5598        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
5599
5600        // Now the left dock is open and panel_1 is active and focused.
5601        workspace.update(cx, |workspace, cx| {
5602            let left_dock = workspace.left_dock();
5603            assert!(left_dock.read(cx).is_open());
5604            assert_eq!(
5605                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5606                panel_1.panel_id(),
5607            );
5608            assert!(panel_1.focus_handle(cx).is_focused(cx));
5609        });
5610
5611        // Emit closed event on panel 2, which is not active
5612        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
5613
5614        // Wo don't close the left dock, because panel_2 wasn't the active panel
5615        workspace.update(cx, |workspace, cx| {
5616            let left_dock = workspace.left_dock();
5617            assert!(left_dock.read(cx).is_open());
5618            assert_eq!(
5619                left_dock.read(cx).visible_panel().unwrap().panel_id(),
5620                panel_1.panel_id(),
5621            );
5622        });
5623
5624        // Emitting a ZoomIn event shows the panel as zoomed.
5625        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
5626        workspace.update(cx, |workspace, _| {
5627            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5628            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
5629        });
5630
5631        // Move panel to another dock while it is zoomed
5632        panel_1.update(cx, |panel, cx| panel.set_position(DockPosition::Right, cx));
5633        workspace.update(cx, |workspace, _| {
5634            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5635
5636            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
5637        });
5638
5639        // This is a helper for getting a:
5640        // - valid focus on an element,
5641        // - that isn't a part of the panes and panels system of the Workspace,
5642        // - and doesn't trigger the 'on_focus_lost' API.
5643        let focus_other_view = {
5644            let workspace = workspace.clone();
5645            move |cx: &mut VisualTestContext| {
5646                workspace.update(cx, |workspace, cx| {
5647                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
5648                        workspace.toggle_modal(cx, TestModal::new);
5649                        workspace.toggle_modal(cx, TestModal::new);
5650                    } else {
5651                        workspace.toggle_modal(cx, TestModal::new);
5652                    }
5653                })
5654            }
5655        };
5656
5657        // If focus is transferred to another view that's not a panel or another pane, we still show
5658        // the panel as zoomed.
5659        focus_other_view(cx);
5660        workspace.update(cx, |workspace, _| {
5661            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5662            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
5663        });
5664
5665        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
5666        workspace.update(cx, |_, cx| cx.focus_self());
5667        workspace.update(cx, |workspace, _| {
5668            assert_eq!(workspace.zoomed, None);
5669            assert_eq!(workspace.zoomed_position, None);
5670        });
5671
5672        // If focus is transferred again to another view that's not a panel or a pane, we won't
5673        // show the panel as zoomed because it wasn't zoomed before.
5674        focus_other_view(cx);
5675        workspace.update(cx, |workspace, _| {
5676            assert_eq!(workspace.zoomed, None);
5677            assert_eq!(workspace.zoomed_position, None);
5678        });
5679
5680        // When the panel is activated, it is zoomed again.
5681        cx.dispatch_action(ToggleRightDock);
5682        workspace.update(cx, |workspace, _| {
5683            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
5684            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
5685        });
5686
5687        // Emitting a ZoomOut event unzooms the panel.
5688        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
5689        workspace.update(cx, |workspace, _| {
5690            assert_eq!(workspace.zoomed, None);
5691            assert_eq!(workspace.zoomed_position, None);
5692        });
5693
5694        // Emit closed event on panel 1, which is active
5695        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
5696
5697        // Now the left dock is closed, because panel_1 was the active panel
5698        workspace.update(cx, |workspace, cx| {
5699            let right_dock = workspace.right_dock();
5700            assert!(!right_dock.read(cx).is_open());
5701        });
5702    }
5703
5704    pub fn init_test(cx: &mut TestAppContext) {
5705        cx.update(|cx| {
5706            let settings_store = SettingsStore::test(cx);
5707            cx.set_global(settings_store);
5708            theme::init(theme::LoadThemes::JustBase, cx);
5709            language::init(cx);
5710            crate::init_settings(cx);
5711            Project::init_settings(cx);
5712        });
5713    }
5714}