1pub mod lsp_status;
   2pub mod menu;
   3pub mod pane;
   4pub mod pane_group;
   5pub mod sidebar;
   6mod status_bar;
   7mod toolbar;
   8
   9use anyhow::{anyhow, Context, Result};
  10use client::{
  11    proto, Authenticate, ChannelList, Client, PeerId, Subscription, TypedEnvelope, User, UserStore,
  12};
  13use clock::ReplicaId;
  14use collections::{hash_map, HashMap, HashSet};
  15use gpui::{
  16    actions,
  17    color::Color,
  18    elements::*,
  19    geometry::{rect::RectF, vector::vec2f, PathBuilder},
  20    impl_actions,
  21    json::{self, to_string_pretty, ToJson},
  22    keymap::Binding,
  23    platform::{CursorStyle, WindowOptions},
  24    AnyModelHandle, AnyViewHandle, AppContext, AsyncAppContext, Border, ClipboardItem, Entity,
  25    ImageData, ModelHandle, MutableAppContext, PathPromptOptions, PromptLevel, RenderContext, Task,
  26    View, ViewContext, ViewHandle, WeakViewHandle,
  27};
  28use language::LanguageRegistry;
  29use log::error;
  30pub use pane::*;
  31pub use pane_group::*;
  32use postage::prelude::Stream;
  33use project::{fs, Fs, Project, ProjectEntryId, ProjectPath, Worktree};
  34use settings::Settings;
  35use sidebar::{Side, Sidebar, SidebarItemId, ToggleSidebarItem, ToggleSidebarItemFocus};
  36use status_bar::StatusBar;
  37pub use status_bar::StatusItemView;
  38use std::{
  39    any::{Any, TypeId},
  40    cell::RefCell,
  41    fmt,
  42    future::Future,
  43    path::{Path, PathBuf},
  44    rc::Rc,
  45    sync::{
  46        atomic::{AtomicBool, Ordering::SeqCst},
  47        Arc,
  48    },
  49};
  50use theme::{Theme, ThemeRegistry};
  51pub use toolbar::{ToolbarItemLocation, ToolbarItemView};
  52use util::ResultExt;
  53
  54type ProjectItemBuilders = HashMap<
  55    TypeId,
  56    fn(usize, ModelHandle<Project>, AnyModelHandle, &mut MutableAppContext) -> Box<dyn ItemHandle>,
  57>;
  58
  59type FollowableItemBuilder = fn(
  60    ViewHandle<Pane>,
  61    ModelHandle<Project>,
  62    &mut Option<proto::view::Variant>,
  63    &mut MutableAppContext,
  64) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>;
  65type FollowableItemBuilders = HashMap<
  66    TypeId,
  67    (
  68        FollowableItemBuilder,
  69        fn(AnyViewHandle) -> Box<dyn FollowableItemHandle>,
  70    ),
  71>;
  72
  73actions!(
  74    workspace,
  75    [
  76        ToggleShare,
  77        Unfollow,
  78        Save,
  79        DebugElements,
  80        ActivatePreviousPane,
  81        ActivateNextPane,
  82        FollowNextCollaborator,
  83    ]
  84);
  85
  86#[derive(Clone)]
  87pub struct Open(pub Arc<AppState>);
  88
  89#[derive(Clone)]
  90pub struct OpenNew(pub Arc<AppState>);
  91
  92#[derive(Clone)]
  93pub struct OpenPaths {
  94    pub paths: Vec<PathBuf>,
  95    pub app_state: Arc<AppState>,
  96}
  97
  98#[derive(Clone)]
  99pub struct ToggleFollow(pub PeerId);
 100
 101#[derive(Clone)]
 102pub struct JoinProject(pub JoinProjectParams);
 103
 104impl_actions!(
 105    workspace,
 106    [Open, OpenNew, OpenPaths, ToggleFollow, JoinProject]
 107);
 108
 109pub fn init(client: &Arc<Client>, cx: &mut MutableAppContext) {
 110    pane::init(cx);
 111    menu::init(cx);
 112
 113    cx.add_global_action(open);
 114    cx.add_global_action(move |action: &OpenPaths, cx: &mut MutableAppContext| {
 115        open_paths(&action.paths, &action.app_state, cx).detach();
 116    });
 117    cx.add_global_action(move |action: &OpenNew, cx: &mut MutableAppContext| {
 118        open_new(&action.0, cx)
 119    });
 120    cx.add_global_action(move |action: &JoinProject, cx: &mut MutableAppContext| {
 121        join_project(action.0.project_id, &action.0.app_state, cx).detach();
 122    });
 123
 124    cx.add_action(Workspace::toggle_share);
 125    cx.add_async_action(Workspace::toggle_follow);
 126    cx.add_async_action(Workspace::follow_next_collaborator);
 127    cx.add_action(
 128        |workspace: &mut Workspace, _: &Unfollow, cx: &mut ViewContext<Workspace>| {
 129            let pane = workspace.active_pane().clone();
 130            workspace.unfollow(&pane, cx);
 131        },
 132    );
 133    cx.add_action(
 134        |workspace: &mut Workspace, _: &Save, cx: &mut ViewContext<Workspace>| {
 135            workspace.save_active_item(cx).detach_and_log_err(cx);
 136        },
 137    );
 138    cx.add_action(Workspace::debug_elements);
 139    cx.add_action(Workspace::toggle_sidebar_item);
 140    cx.add_action(Workspace::toggle_sidebar_item_focus);
 141    cx.add_action(|workspace: &mut Workspace, _: &ActivatePreviousPane, cx| {
 142        workspace.activate_previous_pane(cx)
 143    });
 144    cx.add_action(|workspace: &mut Workspace, _: &ActivateNextPane, cx| {
 145        workspace.activate_next_pane(cx)
 146    });
 147    cx.add_bindings(vec![
 148        Binding::new("ctrl-alt-cmd-f", FollowNextCollaborator, None),
 149        Binding::new("cmd-s", Save, None),
 150        Binding::new("cmd-alt-i", DebugElements, None),
 151        Binding::new("cmd-k cmd-left", ActivatePreviousPane, None),
 152        Binding::new("cmd-k cmd-right", ActivateNextPane, None),
 153        Binding::new(
 154            "cmd-shift-!",
 155            ToggleSidebarItem(SidebarItemId {
 156                side: Side::Left,
 157                item_index: 0,
 158            }),
 159            None,
 160        ),
 161        Binding::new(
 162            "cmd-1",
 163            ToggleSidebarItemFocus(SidebarItemId {
 164                side: Side::Left,
 165                item_index: 0,
 166            }),
 167            None,
 168        ),
 169    ]);
 170
 171    client.add_view_request_handler(Workspace::handle_follow);
 172    client.add_view_message_handler(Workspace::handle_unfollow);
 173    client.add_view_message_handler(Workspace::handle_update_followers);
 174}
 175
 176pub fn register_project_item<I: ProjectItem>(cx: &mut MutableAppContext) {
 177    cx.update_default_global(|builders: &mut ProjectItemBuilders, _| {
 178        builders.insert(TypeId::of::<I::Item>(), |window_id, project, model, cx| {
 179            let item = model.downcast::<I::Item>().unwrap();
 180            Box::new(cx.add_view(window_id, |cx| I::for_project_item(project, item, cx)))
 181        });
 182    });
 183}
 184
 185pub fn register_followable_item<I: FollowableItem>(cx: &mut MutableAppContext) {
 186    cx.update_default_global(|builders: &mut FollowableItemBuilders, _| {
 187        builders.insert(
 188            TypeId::of::<I>(),
 189            (
 190                |pane, project, state, cx| {
 191                    I::from_state_proto(pane, project, state, cx).map(|task| {
 192                        cx.foreground()
 193                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
 194                    })
 195                },
 196                |this| Box::new(this.downcast::<I>().unwrap()),
 197            ),
 198        );
 199    });
 200}
 201
 202pub struct AppState {
 203    pub languages: Arc<LanguageRegistry>,
 204    pub themes: Arc<ThemeRegistry>,
 205    pub client: Arc<client::Client>,
 206    pub user_store: ModelHandle<client::UserStore>,
 207    pub fs: Arc<dyn fs::Fs>,
 208    pub channel_list: ModelHandle<client::ChannelList>,
 209    pub build_window_options: &'static dyn Fn() -> WindowOptions<'static>,
 210    pub build_workspace: &'static dyn Fn(
 211        ModelHandle<Project>,
 212        &Arc<AppState>,
 213        &mut ViewContext<Workspace>,
 214    ) -> Workspace,
 215}
 216
 217#[derive(Clone)]
 218pub struct JoinProjectParams {
 219    pub project_id: u64,
 220    pub app_state: Arc<AppState>,
 221}
 222
 223pub trait Item: View {
 224    fn deactivated(&mut self, _: &mut ViewContext<Self>) {}
 225    fn navigate(&mut self, _: Box<dyn Any>, _: &mut ViewContext<Self>) -> bool {
 226        false
 227    }
 228    fn tab_content(&self, style: &theme::Tab, cx: &AppContext) -> ElementBox;
 229    fn project_path(&self, cx: &AppContext) -> Option<ProjectPath>;
 230    fn project_entry_id(&self, cx: &AppContext) -> Option<ProjectEntryId>;
 231    fn set_nav_history(&mut self, _: ItemNavHistory, _: &mut ViewContext<Self>);
 232    fn clone_on_split(&self, _: &mut ViewContext<Self>) -> Option<Self>
 233    where
 234        Self: Sized,
 235    {
 236        None
 237    }
 238    fn is_dirty(&self, _: &AppContext) -> bool {
 239        false
 240    }
 241    fn has_conflict(&self, _: &AppContext) -> bool {
 242        false
 243    }
 244    fn can_save(&self, cx: &AppContext) -> bool;
 245    fn save(
 246        &mut self,
 247        project: ModelHandle<Project>,
 248        cx: &mut ViewContext<Self>,
 249    ) -> Task<Result<()>>;
 250    fn can_save_as(&self, cx: &AppContext) -> bool;
 251    fn save_as(
 252        &mut self,
 253        project: ModelHandle<Project>,
 254        abs_path: PathBuf,
 255        cx: &mut ViewContext<Self>,
 256    ) -> Task<Result<()>>;
 257    fn reload(
 258        &mut self,
 259        project: ModelHandle<Project>,
 260        cx: &mut ViewContext<Self>,
 261    ) -> Task<Result<()>>;
 262    fn should_activate_item_on_event(_: &Self::Event) -> bool {
 263        false
 264    }
 265    fn should_close_item_on_event(_: &Self::Event) -> bool {
 266        false
 267    }
 268    fn should_update_tab_on_event(_: &Self::Event) -> bool {
 269        false
 270    }
 271    fn act_as_type(
 272        &self,
 273        type_id: TypeId,
 274        self_handle: &ViewHandle<Self>,
 275        _: &AppContext,
 276    ) -> Option<AnyViewHandle> {
 277        if TypeId::of::<Self>() == type_id {
 278            Some(self_handle.into())
 279        } else {
 280            None
 281        }
 282    }
 283}
 284
 285pub trait ProjectItem: Item {
 286    type Item: project::Item;
 287
 288    fn for_project_item(
 289        project: ModelHandle<Project>,
 290        item: ModelHandle<Self::Item>,
 291        cx: &mut ViewContext<Self>,
 292    ) -> Self;
 293}
 294
 295pub trait FollowableItem: Item {
 296    fn to_state_proto(&self, cx: &AppContext) -> Option<proto::view::Variant>;
 297    fn from_state_proto(
 298        pane: ViewHandle<Pane>,
 299        project: ModelHandle<Project>,
 300        state: &mut Option<proto::view::Variant>,
 301        cx: &mut MutableAppContext,
 302    ) -> Option<Task<Result<ViewHandle<Self>>>>;
 303    fn add_event_to_update_proto(
 304        &self,
 305        event: &Self::Event,
 306        update: &mut Option<proto::update_view::Variant>,
 307        cx: &AppContext,
 308    ) -> bool;
 309    fn apply_update_proto(
 310        &mut self,
 311        message: proto::update_view::Variant,
 312        cx: &mut ViewContext<Self>,
 313    ) -> Result<()>;
 314
 315    fn set_leader_replica_id(&mut self, leader_replica_id: Option<u16>, cx: &mut ViewContext<Self>);
 316    fn should_unfollow_on_event(event: &Self::Event, cx: &AppContext) -> bool;
 317}
 318
 319pub trait FollowableItemHandle: ItemHandle {
 320    fn set_leader_replica_id(&self, leader_replica_id: Option<u16>, cx: &mut MutableAppContext);
 321    fn to_state_proto(&self, cx: &AppContext) -> Option<proto::view::Variant>;
 322    fn add_event_to_update_proto(
 323        &self,
 324        event: &dyn Any,
 325        update: &mut Option<proto::update_view::Variant>,
 326        cx: &AppContext,
 327    ) -> bool;
 328    fn apply_update_proto(
 329        &self,
 330        message: proto::update_view::Variant,
 331        cx: &mut MutableAppContext,
 332    ) -> Result<()>;
 333    fn should_unfollow_on_event(&self, event: &dyn Any, cx: &AppContext) -> bool;
 334}
 335
 336impl<T: FollowableItem> FollowableItemHandle for ViewHandle<T> {
 337    fn set_leader_replica_id(&self, leader_replica_id: Option<u16>, cx: &mut MutableAppContext) {
 338        self.update(cx, |this, cx| {
 339            this.set_leader_replica_id(leader_replica_id, cx)
 340        })
 341    }
 342
 343    fn to_state_proto(&self, cx: &AppContext) -> Option<proto::view::Variant> {
 344        self.read(cx).to_state_proto(cx)
 345    }
 346
 347    fn add_event_to_update_proto(
 348        &self,
 349        event: &dyn Any,
 350        update: &mut Option<proto::update_view::Variant>,
 351        cx: &AppContext,
 352    ) -> bool {
 353        if let Some(event) = event.downcast_ref() {
 354            self.read(cx).add_event_to_update_proto(event, update, cx)
 355        } else {
 356            false
 357        }
 358    }
 359
 360    fn apply_update_proto(
 361        &self,
 362        message: proto::update_view::Variant,
 363        cx: &mut MutableAppContext,
 364    ) -> Result<()> {
 365        self.update(cx, |this, cx| this.apply_update_proto(message, cx))
 366    }
 367
 368    fn should_unfollow_on_event(&self, event: &dyn Any, cx: &AppContext) -> bool {
 369        if let Some(event) = event.downcast_ref() {
 370            T::should_unfollow_on_event(event, cx)
 371        } else {
 372            false
 373        }
 374    }
 375}
 376
 377pub trait ItemHandle: 'static + fmt::Debug {
 378    fn tab_content(&self, style: &theme::Tab, cx: &AppContext) -> ElementBox;
 379    fn project_path(&self, cx: &AppContext) -> Option<ProjectPath>;
 380    fn project_entry_id(&self, cx: &AppContext) -> Option<ProjectEntryId>;
 381    fn boxed_clone(&self) -> Box<dyn ItemHandle>;
 382    fn set_nav_history(&self, nav_history: Rc<RefCell<NavHistory>>, cx: &mut MutableAppContext);
 383    fn clone_on_split(&self, cx: &mut MutableAppContext) -> Option<Box<dyn ItemHandle>>;
 384    fn added_to_pane(
 385        &self,
 386        workspace: &mut Workspace,
 387        pane: ViewHandle<Pane>,
 388        cx: &mut ViewContext<Workspace>,
 389    );
 390    fn deactivated(&self, cx: &mut MutableAppContext);
 391    fn navigate(&self, data: Box<dyn Any>, cx: &mut MutableAppContext) -> bool;
 392    fn id(&self) -> usize;
 393    fn to_any(&self) -> AnyViewHandle;
 394    fn is_dirty(&self, cx: &AppContext) -> bool;
 395    fn has_conflict(&self, cx: &AppContext) -> bool;
 396    fn can_save(&self, cx: &AppContext) -> bool;
 397    fn can_save_as(&self, cx: &AppContext) -> bool;
 398    fn save(&self, project: ModelHandle<Project>, cx: &mut MutableAppContext) -> Task<Result<()>>;
 399    fn save_as(
 400        &self,
 401        project: ModelHandle<Project>,
 402        abs_path: PathBuf,
 403        cx: &mut MutableAppContext,
 404    ) -> Task<Result<()>>;
 405    fn reload(&self, project: ModelHandle<Project>, cx: &mut MutableAppContext)
 406        -> Task<Result<()>>;
 407    fn act_as_type(&self, type_id: TypeId, cx: &AppContext) -> Option<AnyViewHandle>;
 408    fn to_followable_item_handle(&self, cx: &AppContext) -> Option<Box<dyn FollowableItemHandle>>;
 409}
 410
 411pub trait WeakItemHandle {
 412    fn id(&self) -> usize;
 413    fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn ItemHandle>>;
 414}
 415
 416impl dyn ItemHandle {
 417    pub fn downcast<T: View>(&self) -> Option<ViewHandle<T>> {
 418        self.to_any().downcast()
 419    }
 420
 421    pub fn act_as<T: View>(&self, cx: &AppContext) -> Option<ViewHandle<T>> {
 422        self.act_as_type(TypeId::of::<T>(), cx)
 423            .and_then(|t| t.downcast())
 424    }
 425}
 426
 427impl<T: Item> ItemHandle for ViewHandle<T> {
 428    fn tab_content(&self, style: &theme::Tab, cx: &AppContext) -> ElementBox {
 429        self.read(cx).tab_content(style, cx)
 430    }
 431
 432    fn project_path(&self, cx: &AppContext) -> Option<ProjectPath> {
 433        self.read(cx).project_path(cx)
 434    }
 435
 436    fn project_entry_id(&self, cx: &AppContext) -> Option<ProjectEntryId> {
 437        self.read(cx).project_entry_id(cx)
 438    }
 439
 440    fn boxed_clone(&self) -> Box<dyn ItemHandle> {
 441        Box::new(self.clone())
 442    }
 443
 444    fn clone_on_split(&self, cx: &mut MutableAppContext) -> Option<Box<dyn ItemHandle>> {
 445        self.update(cx, |item, cx| {
 446            cx.add_option_view(|cx| item.clone_on_split(cx))
 447        })
 448        .map(|handle| Box::new(handle) as Box<dyn ItemHandle>)
 449    }
 450
 451    fn set_nav_history(&self, nav_history: Rc<RefCell<NavHistory>>, cx: &mut MutableAppContext) {
 452        self.update(cx, |item, cx| {
 453            item.set_nav_history(ItemNavHistory::new(nav_history, &cx.handle()), cx);
 454        })
 455    }
 456
 457    fn added_to_pane(
 458        &self,
 459        workspace: &mut Workspace,
 460        pane: ViewHandle<Pane>,
 461        cx: &mut ViewContext<Workspace>,
 462    ) {
 463        if let Some(followed_item) = self.to_followable_item_handle(cx) {
 464            if let Some(message) = followed_item.to_state_proto(cx) {
 465                workspace.update_followers(
 466                    proto::update_followers::Variant::CreateView(proto::View {
 467                        id: followed_item.id() as u64,
 468                        variant: Some(message),
 469                        leader_id: workspace.leader_for_pane(&pane).map(|id| id.0),
 470                    }),
 471                    cx,
 472                );
 473            }
 474        }
 475
 476        let pending_update = Rc::new(RefCell::new(None));
 477        let pending_update_scheduled = Rc::new(AtomicBool::new(false));
 478        let pane = pane.downgrade();
 479        cx.subscribe(self, move |workspace, item, event, cx| {
 480            let pane = if let Some(pane) = pane.upgrade(cx) {
 481                pane
 482            } else {
 483                log::error!("unexpected item event after pane was dropped");
 484                return;
 485            };
 486
 487            if let Some(item) = item.to_followable_item_handle(cx) {
 488                let leader_id = workspace.leader_for_pane(&pane);
 489
 490                if leader_id.is_some() && item.should_unfollow_on_event(event, cx) {
 491                    workspace.unfollow(&pane, cx);
 492                }
 493
 494                if item.add_event_to_update_proto(event, &mut *pending_update.borrow_mut(), cx)
 495                    && !pending_update_scheduled.load(SeqCst)
 496                {
 497                    pending_update_scheduled.store(true, SeqCst);
 498                    cx.after_window_update({
 499                        let pending_update = pending_update.clone();
 500                        let pending_update_scheduled = pending_update_scheduled.clone();
 501                        move |this, cx| {
 502                            pending_update_scheduled.store(false, SeqCst);
 503                            this.update_followers(
 504                                proto::update_followers::Variant::UpdateView(proto::UpdateView {
 505                                    id: item.id() as u64,
 506                                    variant: pending_update.borrow_mut().take(),
 507                                    leader_id: leader_id.map(|id| id.0),
 508                                }),
 509                                cx,
 510                            );
 511                        }
 512                    });
 513                }
 514            }
 515
 516            if T::should_close_item_on_event(event) {
 517                Pane::close_item(workspace, pane, item.id(), cx).detach_and_log_err(cx);
 518                return;
 519            }
 520
 521            if T::should_activate_item_on_event(event) {
 522                pane.update(cx, |pane, cx| {
 523                    if let Some(ix) = pane.index_for_item(&item) {
 524                        pane.activate_item(ix, true, cx);
 525                        pane.activate(cx);
 526                    }
 527                });
 528            }
 529
 530            if T::should_update_tab_on_event(event) {
 531                pane.update(cx, |_, cx| cx.notify());
 532            }
 533        })
 534        .detach();
 535    }
 536
 537    fn deactivated(&self, cx: &mut MutableAppContext) {
 538        self.update(cx, |this, cx| this.deactivated(cx));
 539    }
 540
 541    fn navigate(&self, data: Box<dyn Any>, cx: &mut MutableAppContext) -> bool {
 542        self.update(cx, |this, cx| this.navigate(data, cx))
 543    }
 544
 545    fn save(&self, project: ModelHandle<Project>, cx: &mut MutableAppContext) -> Task<Result<()>> {
 546        self.update(cx, |item, cx| item.save(project, cx))
 547    }
 548
 549    fn save_as(
 550        &self,
 551        project: ModelHandle<Project>,
 552        abs_path: PathBuf,
 553        cx: &mut MutableAppContext,
 554    ) -> Task<anyhow::Result<()>> {
 555        self.update(cx, |item, cx| item.save_as(project, abs_path, cx))
 556    }
 557
 558    fn reload(
 559        &self,
 560        project: ModelHandle<Project>,
 561        cx: &mut MutableAppContext,
 562    ) -> Task<Result<()>> {
 563        self.update(cx, |item, cx| item.reload(project, cx))
 564    }
 565
 566    fn is_dirty(&self, cx: &AppContext) -> bool {
 567        self.read(cx).is_dirty(cx)
 568    }
 569
 570    fn has_conflict(&self, cx: &AppContext) -> bool {
 571        self.read(cx).has_conflict(cx)
 572    }
 573
 574    fn id(&self) -> usize {
 575        self.id()
 576    }
 577
 578    fn to_any(&self) -> AnyViewHandle {
 579        self.into()
 580    }
 581
 582    fn can_save(&self, cx: &AppContext) -> bool {
 583        self.read(cx).can_save(cx)
 584    }
 585
 586    fn can_save_as(&self, cx: &AppContext) -> bool {
 587        self.read(cx).can_save_as(cx)
 588    }
 589
 590    fn act_as_type(&self, type_id: TypeId, cx: &AppContext) -> Option<AnyViewHandle> {
 591        self.read(cx).act_as_type(type_id, self, cx)
 592    }
 593
 594    fn to_followable_item_handle(&self, cx: &AppContext) -> Option<Box<dyn FollowableItemHandle>> {
 595        if cx.has_global::<FollowableItemBuilders>() {
 596            let builders = cx.global::<FollowableItemBuilders>();
 597            let item = self.to_any();
 598            Some(builders.get(&item.view_type())?.1(item))
 599        } else {
 600            None
 601        }
 602    }
 603}
 604
 605impl Into<AnyViewHandle> for Box<dyn ItemHandle> {
 606    fn into(self) -> AnyViewHandle {
 607        self.to_any()
 608    }
 609}
 610
 611impl Clone for Box<dyn ItemHandle> {
 612    fn clone(&self) -> Box<dyn ItemHandle> {
 613        self.boxed_clone()
 614    }
 615}
 616
 617impl<T: Item> WeakItemHandle for WeakViewHandle<T> {
 618    fn id(&self) -> usize {
 619        self.id()
 620    }
 621
 622    fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn ItemHandle>> {
 623        self.upgrade(cx).map(|v| Box::new(v) as Box<dyn ItemHandle>)
 624    }
 625}
 626
 627#[derive(Clone)]
 628pub struct WorkspaceParams {
 629    pub project: ModelHandle<Project>,
 630    pub client: Arc<Client>,
 631    pub fs: Arc<dyn Fs>,
 632    pub languages: Arc<LanguageRegistry>,
 633    pub user_store: ModelHandle<UserStore>,
 634    pub channel_list: ModelHandle<ChannelList>,
 635}
 636
 637impl WorkspaceParams {
 638    #[cfg(any(test, feature = "test-support"))]
 639    pub fn test(cx: &mut MutableAppContext) -> Self {
 640        let settings = Settings::test(cx);
 641        cx.set_global(settings);
 642
 643        let fs = project::FakeFs::new(cx.background().clone());
 644        let languages = Arc::new(LanguageRegistry::test());
 645        let http_client = client::test::FakeHttpClient::new(|_| async move {
 646            Ok(client::http::ServerResponse::new(404))
 647        });
 648        let client = Client::new(http_client.clone());
 649        let user_store = cx.add_model(|cx| UserStore::new(client.clone(), http_client, cx));
 650        let project = Project::local(
 651            client.clone(),
 652            user_store.clone(),
 653            languages.clone(),
 654            fs.clone(),
 655            cx,
 656        );
 657        Self {
 658            project,
 659            channel_list: cx
 660                .add_model(|cx| ChannelList::new(user_store.clone(), client.clone(), cx)),
 661            client,
 662            fs,
 663            languages,
 664            user_store,
 665        }
 666    }
 667
 668    #[cfg(any(test, feature = "test-support"))]
 669    pub fn local(app_state: &Arc<AppState>, cx: &mut MutableAppContext) -> Self {
 670        Self {
 671            project: Project::local(
 672                app_state.client.clone(),
 673                app_state.user_store.clone(),
 674                app_state.languages.clone(),
 675                app_state.fs.clone(),
 676                cx,
 677            ),
 678            client: app_state.client.clone(),
 679            fs: app_state.fs.clone(),
 680            languages: app_state.languages.clone(),
 681            user_store: app_state.user_store.clone(),
 682            channel_list: app_state.channel_list.clone(),
 683        }
 684    }
 685}
 686
 687pub enum Event {
 688    PaneAdded(ViewHandle<Pane>),
 689}
 690
 691pub struct Workspace {
 692    weak_self: WeakViewHandle<Self>,
 693    client: Arc<Client>,
 694    user_store: ModelHandle<client::UserStore>,
 695    remote_entity_subscription: Option<Subscription>,
 696    fs: Arc<dyn Fs>,
 697    modal: Option<AnyViewHandle>,
 698    center: PaneGroup,
 699    left_sidebar: Sidebar,
 700    right_sidebar: Sidebar,
 701    panes: Vec<ViewHandle<Pane>>,
 702    active_pane: ViewHandle<Pane>,
 703    status_bar: ViewHandle<StatusBar>,
 704    project: ModelHandle<Project>,
 705    leader_state: LeaderState,
 706    follower_states_by_leader: FollowerStatesByLeader,
 707    last_leaders_by_pane: HashMap<WeakViewHandle<Pane>, PeerId>,
 708    _observe_current_user: Task<()>,
 709}
 710
 711#[derive(Default)]
 712struct LeaderState {
 713    followers: HashSet<PeerId>,
 714}
 715
 716type FollowerStatesByLeader = HashMap<PeerId, HashMap<ViewHandle<Pane>, FollowerState>>;
 717
 718#[derive(Default)]
 719struct FollowerState {
 720    active_view_id: Option<u64>,
 721    items_by_leader_view_id: HashMap<u64, FollowerItem>,
 722}
 723
 724#[derive(Debug)]
 725enum FollowerItem {
 726    Loading(Vec<proto::update_view::Variant>),
 727    Loaded(Box<dyn FollowableItemHandle>),
 728}
 729
 730impl Workspace {
 731    pub fn new(params: &WorkspaceParams, cx: &mut ViewContext<Self>) -> Self {
 732        cx.observe(&params.project, |_, project, cx| {
 733            if project.read(cx).is_read_only() {
 734                cx.blur();
 735            }
 736            cx.notify()
 737        })
 738        .detach();
 739
 740        cx.subscribe(&params.project, move |this, project, event, cx| {
 741            match event {
 742                project::Event::RemoteIdChanged(remote_id) => {
 743                    this.project_remote_id_changed(*remote_id, cx);
 744                }
 745                project::Event::CollaboratorLeft(peer_id) => {
 746                    this.collaborator_left(*peer_id, cx);
 747                }
 748                _ => {}
 749            }
 750            if project.read(cx).is_read_only() {
 751                cx.blur();
 752            }
 753            cx.notify()
 754        })
 755        .detach();
 756
 757        let pane = cx.add_view(|cx| Pane::new(cx));
 758        let pane_id = pane.id();
 759        cx.observe(&pane, move |me, _, cx| {
 760            let active_entry = me.active_project_path(cx);
 761            me.project
 762                .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 763        })
 764        .detach();
 765        cx.subscribe(&pane, move |me, _, event, cx| {
 766            me.handle_pane_event(pane_id, event, cx)
 767        })
 768        .detach();
 769        cx.focus(&pane);
 770        cx.emit(Event::PaneAdded(pane.clone()));
 771
 772        let status_bar = cx.add_view(|cx| StatusBar::new(&pane, cx));
 773        let mut current_user = params.user_store.read(cx).watch_current_user().clone();
 774        let mut connection_status = params.client.status().clone();
 775        let _observe_current_user = cx.spawn_weak(|this, mut cx| async move {
 776            current_user.recv().await;
 777            connection_status.recv().await;
 778            let mut stream =
 779                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 780
 781            while stream.recv().await.is_some() {
 782                cx.update(|cx| {
 783                    if let Some(this) = this.upgrade(cx) {
 784                        this.update(cx, |_, cx| cx.notify());
 785                    }
 786                })
 787            }
 788        });
 789
 790        let weak_self = cx.weak_handle();
 791
 792        cx.emit_global(WorkspaceCreated(weak_self.clone()));
 793
 794        let mut this = Workspace {
 795            modal: None,
 796            weak_self,
 797            center: PaneGroup::new(pane.clone()),
 798            panes: vec![pane.clone()],
 799            active_pane: pane.clone(),
 800            status_bar,
 801            client: params.client.clone(),
 802            remote_entity_subscription: None,
 803            user_store: params.user_store.clone(),
 804            fs: params.fs.clone(),
 805            left_sidebar: Sidebar::new(Side::Left),
 806            right_sidebar: Sidebar::new(Side::Right),
 807            project: params.project.clone(),
 808            leader_state: Default::default(),
 809            follower_states_by_leader: Default::default(),
 810            last_leaders_by_pane: Default::default(),
 811            _observe_current_user,
 812        };
 813        this.project_remote_id_changed(this.project.read(cx).remote_id(), cx);
 814        this
 815    }
 816
 817    pub fn weak_handle(&self) -> WeakViewHandle<Self> {
 818        self.weak_self.clone()
 819    }
 820
 821    pub fn left_sidebar_mut(&mut self) -> &mut Sidebar {
 822        &mut self.left_sidebar
 823    }
 824
 825    pub fn right_sidebar_mut(&mut self) -> &mut Sidebar {
 826        &mut self.right_sidebar
 827    }
 828
 829    pub fn status_bar(&self) -> &ViewHandle<StatusBar> {
 830        &self.status_bar
 831    }
 832
 833    pub fn project(&self) -> &ModelHandle<Project> {
 834        &self.project
 835    }
 836
 837    pub fn worktrees<'a>(
 838        &self,
 839        cx: &'a AppContext,
 840    ) -> impl 'a + Iterator<Item = ModelHandle<Worktree>> {
 841        self.project.read(cx).worktrees(cx)
 842    }
 843
 844    pub fn contains_paths(&self, paths: &[PathBuf], cx: &AppContext) -> bool {
 845        paths.iter().all(|path| self.contains_path(&path, cx))
 846    }
 847
 848    pub fn contains_path(&self, path: &Path, cx: &AppContext) -> bool {
 849        for worktree in self.worktrees(cx) {
 850            let worktree = worktree.read(cx).as_local();
 851            if worktree.map_or(false, |w| w.contains_abs_path(path)) {
 852                return true;
 853            }
 854        }
 855        false
 856    }
 857
 858    pub fn worktree_scans_complete(&self, cx: &AppContext) -> impl Future<Output = ()> + 'static {
 859        let futures = self
 860            .worktrees(cx)
 861            .filter_map(|worktree| worktree.read(cx).as_local())
 862            .map(|worktree| worktree.scan_complete())
 863            .collect::<Vec<_>>();
 864        async move {
 865            for future in futures {
 866                future.await;
 867            }
 868        }
 869    }
 870
 871    pub fn open_paths(
 872        &mut self,
 873        abs_paths: &[PathBuf],
 874        cx: &mut ViewContext<Self>,
 875    ) -> Task<Vec<Option<Result<Box<dyn ItemHandle>, Arc<anyhow::Error>>>>> {
 876        let entries = abs_paths
 877            .iter()
 878            .cloned()
 879            .map(|path| self.project_path_for_path(&path, cx))
 880            .collect::<Vec<_>>();
 881
 882        let fs = self.fs.clone();
 883        let tasks = abs_paths
 884            .iter()
 885            .cloned()
 886            .zip(entries.into_iter())
 887            .map(|(abs_path, project_path)| {
 888                cx.spawn(|this, mut cx| {
 889                    let fs = fs.clone();
 890                    async move {
 891                        let project_path = project_path.await.ok()?;
 892                        if fs.is_file(&abs_path).await {
 893                            Some(
 894                                this.update(&mut cx, |this, cx| this.open_path(project_path, cx))
 895                                    .await,
 896                            )
 897                        } else {
 898                            None
 899                        }
 900                    }
 901                })
 902            })
 903            .collect::<Vec<_>>();
 904
 905        cx.foreground().spawn(async move {
 906            let mut items = Vec::new();
 907            for task in tasks {
 908                items.push(task.await);
 909            }
 910            items
 911        })
 912    }
 913
 914    fn project_path_for_path(
 915        &self,
 916        abs_path: &Path,
 917        cx: &mut ViewContext<Self>,
 918    ) -> Task<Result<ProjectPath>> {
 919        let entry = self.project().update(cx, |project, cx| {
 920            project.find_or_create_local_worktree(abs_path, true, cx)
 921        });
 922        cx.spawn(|_, cx| async move {
 923            let (worktree, path) = entry.await?;
 924            Ok(ProjectPath {
 925                worktree_id: worktree.read_with(&cx, |t, _| t.id()),
 926                path: path.into(),
 927            })
 928        })
 929    }
 930
 931    // Returns the model that was toggled closed if it was open
 932    pub fn toggle_modal<V, F>(
 933        &mut self,
 934        cx: &mut ViewContext<Self>,
 935        add_view: F,
 936    ) -> Option<ViewHandle<V>>
 937    where
 938        V: 'static + View,
 939        F: FnOnce(&mut ViewContext<Self>, &mut Self) -> ViewHandle<V>,
 940    {
 941        cx.notify();
 942        // Whatever modal was visible is getting clobbered. If its the same type as V, then return
 943        // it. Otherwise, create a new modal and set it as active.
 944        let already_open_modal = self.modal.take().and_then(|modal| modal.downcast::<V>());
 945        if let Some(already_open_modal) = already_open_modal {
 946            cx.focus_self();
 947            Some(already_open_modal)
 948        } else {
 949            let modal = add_view(cx, self);
 950            cx.focus(&modal);
 951            self.modal = Some(modal.into());
 952            None
 953        }
 954    }
 955
 956    pub fn modal(&self) -> Option<&AnyViewHandle> {
 957        self.modal.as_ref()
 958    }
 959
 960    pub fn dismiss_modal(&mut self, cx: &mut ViewContext<Self>) {
 961        if self.modal.take().is_some() {
 962            cx.focus(&self.active_pane);
 963            cx.notify();
 964        }
 965    }
 966
 967    pub fn items<'a>(
 968        &'a self,
 969        cx: &'a AppContext,
 970    ) -> impl 'a + Iterator<Item = &Box<dyn ItemHandle>> {
 971        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 972    }
 973
 974    pub fn item_of_type<T: Item>(&self, cx: &AppContext) -> Option<ViewHandle<T>> {
 975        self.items_of_type(cx).max_by_key(|item| item.id())
 976    }
 977
 978    pub fn items_of_type<'a, T: Item>(
 979        &'a self,
 980        cx: &'a AppContext,
 981    ) -> impl 'a + Iterator<Item = ViewHandle<T>> {
 982        self.panes
 983            .iter()
 984            .flat_map(|pane| pane.read(cx).items_of_type())
 985    }
 986
 987    pub fn active_item(&self, cx: &AppContext) -> Option<Box<dyn ItemHandle>> {
 988        self.active_pane().read(cx).active_item()
 989    }
 990
 991    fn active_project_path(&self, cx: &ViewContext<Self>) -> Option<ProjectPath> {
 992        self.active_item(cx).and_then(|item| item.project_path(cx))
 993    }
 994
 995    pub fn save_active_item(&mut self, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
 996        let project = self.project.clone();
 997        if let Some(item) = self.active_item(cx) {
 998            if item.can_save(cx) {
 999                if item.has_conflict(cx.as_ref()) {
1000                    const CONFLICT_MESSAGE: &'static str = "This file has changed on disk since you started editing it. Do you want to overwrite it?";
1001
1002                    let mut answer = cx.prompt(
1003                        PromptLevel::Warning,
1004                        CONFLICT_MESSAGE,
1005                        &["Overwrite", "Cancel"],
1006                    );
1007                    cx.spawn(|_, mut cx| async move {
1008                        let answer = answer.recv().await;
1009                        if answer == Some(0) {
1010                            cx.update(|cx| item.save(project, cx)).await?;
1011                        }
1012                        Ok(())
1013                    })
1014                } else {
1015                    item.save(project, cx)
1016                }
1017            } else if item.can_save_as(cx) {
1018                let worktree = self.worktrees(cx).next();
1019                let start_abs_path = worktree
1020                    .and_then(|w| w.read(cx).as_local())
1021                    .map_or(Path::new(""), |w| w.abs_path())
1022                    .to_path_buf();
1023                let mut abs_path = cx.prompt_for_new_path(&start_abs_path);
1024                cx.spawn(|_, mut cx| async move {
1025                    if let Some(abs_path) = abs_path.recv().await.flatten() {
1026                        cx.update(|cx| item.save_as(project, abs_path, cx)).await?;
1027                    }
1028                    Ok(())
1029                })
1030            } else {
1031                Task::ready(Ok(()))
1032            }
1033        } else {
1034            Task::ready(Ok(()))
1035        }
1036    }
1037
1038    pub fn toggle_sidebar_item(&mut self, action: &ToggleSidebarItem, cx: &mut ViewContext<Self>) {
1039        let sidebar = match action.0.side {
1040            Side::Left => &mut self.left_sidebar,
1041            Side::Right => &mut self.right_sidebar,
1042        };
1043        sidebar.toggle_item(action.0.item_index);
1044        if let Some(active_item) = sidebar.active_item() {
1045            cx.focus(active_item);
1046        } else {
1047            cx.focus_self();
1048        }
1049        cx.notify();
1050    }
1051
1052    pub fn toggle_sidebar_item_focus(
1053        &mut self,
1054        action: &ToggleSidebarItemFocus,
1055        cx: &mut ViewContext<Self>,
1056    ) {
1057        let sidebar = match action.0.side {
1058            Side::Left => &mut self.left_sidebar,
1059            Side::Right => &mut self.right_sidebar,
1060        };
1061        sidebar.activate_item(action.0.item_index);
1062        if let Some(active_item) = sidebar.active_item() {
1063            if active_item.is_focused(cx) {
1064                cx.focus_self();
1065            } else {
1066                cx.focus(active_item);
1067            }
1068        }
1069        cx.notify();
1070    }
1071
1072    pub fn debug_elements(&mut self, _: &DebugElements, cx: &mut ViewContext<Self>) {
1073        match to_string_pretty(&cx.debug_elements()) {
1074            Ok(json) => {
1075                let kib = json.len() as f32 / 1024.;
1076                cx.as_mut().write_to_clipboard(ClipboardItem::new(json));
1077                log::info!(
1078                    "copied {:.1} KiB of element debug JSON to the clipboard",
1079                    kib
1080                );
1081            }
1082            Err(error) => {
1083                log::error!("error debugging elements: {}", error);
1084            }
1085        };
1086    }
1087
1088    fn add_pane(&mut self, cx: &mut ViewContext<Self>) -> ViewHandle<Pane> {
1089        let pane = cx.add_view(|cx| Pane::new(cx));
1090        let pane_id = pane.id();
1091        cx.observe(&pane, move |me, _, cx| {
1092            let active_entry = me.active_project_path(cx);
1093            me.project
1094                .update(cx, |project, cx| project.set_active_path(active_entry, cx));
1095        })
1096        .detach();
1097        cx.subscribe(&pane, move |me, _, event, cx| {
1098            me.handle_pane_event(pane_id, event, cx)
1099        })
1100        .detach();
1101        self.panes.push(pane.clone());
1102        self.activate_pane(pane.clone(), cx);
1103        cx.emit(Event::PaneAdded(pane.clone()));
1104        pane
1105    }
1106
1107    pub fn add_item(&mut self, item: Box<dyn ItemHandle>, cx: &mut ViewContext<Self>) {
1108        let pane = self.active_pane().clone();
1109        Pane::add_item(self, pane, item, true, cx);
1110    }
1111
1112    pub fn open_path(
1113        &mut self,
1114        path: impl Into<ProjectPath>,
1115        cx: &mut ViewContext<Self>,
1116    ) -> Task<Result<Box<dyn ItemHandle>, Arc<anyhow::Error>>> {
1117        let pane = self.active_pane().downgrade();
1118        let task = self.load_path(path.into(), cx);
1119        cx.spawn(|this, mut cx| async move {
1120            let (project_entry_id, build_item) = task.await?;
1121            let pane = pane
1122                .upgrade(&cx)
1123                .ok_or_else(|| anyhow!("pane was closed"))?;
1124            this.update(&mut cx, |this, cx| {
1125                Ok(Pane::open_item(
1126                    this,
1127                    pane,
1128                    project_entry_id,
1129                    cx,
1130                    build_item,
1131                ))
1132            })
1133        })
1134    }
1135
1136    pub(crate) fn load_path(
1137        &mut self,
1138        path: ProjectPath,
1139        cx: &mut ViewContext<Self>,
1140    ) -> Task<
1141        Result<(
1142            ProjectEntryId,
1143            impl 'static + FnOnce(&mut MutableAppContext) -> Box<dyn ItemHandle>,
1144        )>,
1145    > {
1146        let project = self.project().clone();
1147        let project_item = project.update(cx, |project, cx| project.open_path(path, cx));
1148        let window_id = cx.window_id();
1149        cx.as_mut().spawn(|mut cx| async move {
1150            let (project_entry_id, project_item) = project_item.await?;
1151            let build_item = cx.update(|cx| {
1152                cx.default_global::<ProjectItemBuilders>()
1153                    .get(&project_item.model_type())
1154                    .ok_or_else(|| anyhow!("no item builder for project item"))
1155                    .cloned()
1156            })?;
1157            let build_item =
1158                move |cx: &mut MutableAppContext| build_item(window_id, project, project_item, cx);
1159            Ok((project_entry_id, build_item))
1160        })
1161    }
1162
1163    pub fn open_project_item<T>(
1164        &mut self,
1165        project_item: ModelHandle<T::Item>,
1166        cx: &mut ViewContext<Self>,
1167    ) -> ViewHandle<T>
1168    where
1169        T: ProjectItem,
1170    {
1171        use project::Item as _;
1172
1173        let entry_id = project_item.read(cx).entry_id(cx);
1174        if let Some(item) = entry_id
1175            .and_then(|entry_id| self.active_pane().read(cx).item_for_entry(entry_id, cx))
1176            .and_then(|item| item.downcast())
1177        {
1178            self.activate_item(&item, cx);
1179            return item;
1180        }
1181
1182        let item = cx.add_view(|cx| T::for_project_item(self.project().clone(), project_item, cx));
1183        self.add_item(Box::new(item.clone()), cx);
1184        item
1185    }
1186
1187    pub fn activate_item(&mut self, item: &dyn ItemHandle, cx: &mut ViewContext<Self>) -> bool {
1188        let result = self.panes.iter().find_map(|pane| {
1189            if let Some(ix) = pane.read(cx).index_for_item(item) {
1190                Some((pane.clone(), ix))
1191            } else {
1192                None
1193            }
1194        });
1195        if let Some((pane, ix)) = result {
1196            self.activate_pane(pane.clone(), cx);
1197            pane.update(cx, |pane, cx| pane.activate_item(ix, true, cx));
1198            true
1199        } else {
1200            false
1201        }
1202    }
1203
1204    pub fn activate_next_pane(&mut self, cx: &mut ViewContext<Self>) {
1205        let next_pane = {
1206            let panes = self.center.panes();
1207            let ix = panes
1208                .iter()
1209                .position(|pane| **pane == self.active_pane)
1210                .unwrap();
1211            let next_ix = (ix + 1) % panes.len();
1212            panes[next_ix].clone()
1213        };
1214        self.activate_pane(next_pane, cx);
1215    }
1216
1217    pub fn activate_previous_pane(&mut self, cx: &mut ViewContext<Self>) {
1218        let prev_pane = {
1219            let panes = self.center.panes();
1220            let ix = panes
1221                .iter()
1222                .position(|pane| **pane == self.active_pane)
1223                .unwrap();
1224            let prev_ix = if ix == 0 { panes.len() - 1 } else { ix - 1 };
1225            panes[prev_ix].clone()
1226        };
1227        self.activate_pane(prev_pane, cx);
1228    }
1229
1230    fn activate_pane(&mut self, pane: ViewHandle<Pane>, cx: &mut ViewContext<Self>) {
1231        if self.active_pane != pane {
1232            self.active_pane = pane.clone();
1233            self.status_bar.update(cx, |status_bar, cx| {
1234                status_bar.set_active_pane(&self.active_pane, cx);
1235            });
1236            cx.focus(&self.active_pane);
1237            cx.notify();
1238        }
1239
1240        self.update_followers(
1241            proto::update_followers::Variant::UpdateActiveView(proto::UpdateActiveView {
1242                id: self.active_item(cx).map(|item| item.id() as u64),
1243                leader_id: self.leader_for_pane(&pane).map(|id| id.0),
1244            }),
1245            cx,
1246        );
1247    }
1248
1249    fn handle_pane_event(
1250        &mut self,
1251        pane_id: usize,
1252        event: &pane::Event,
1253        cx: &mut ViewContext<Self>,
1254    ) {
1255        if let Some(pane) = self.pane(pane_id) {
1256            match event {
1257                pane::Event::Split(direction) => {
1258                    self.split_pane(pane, *direction, cx);
1259                }
1260                pane::Event::Remove => {
1261                    self.remove_pane(pane, cx);
1262                }
1263                pane::Event::Activate => {
1264                    self.activate_pane(pane, cx);
1265                }
1266                pane::Event::ActivateItem { local } => {
1267                    if *local {
1268                        self.unfollow(&pane, cx);
1269                    }
1270                }
1271            }
1272        } else {
1273            error!("pane {} not found", pane_id);
1274        }
1275    }
1276
1277    pub fn split_pane(
1278        &mut self,
1279        pane: ViewHandle<Pane>,
1280        direction: SplitDirection,
1281        cx: &mut ViewContext<Self>,
1282    ) -> ViewHandle<Pane> {
1283        let new_pane = self.add_pane(cx);
1284        self.activate_pane(new_pane.clone(), cx);
1285        if let Some(item) = pane.read(cx).active_item() {
1286            if let Some(clone) = item.clone_on_split(cx.as_mut()) {
1287                Pane::add_item(self, new_pane.clone(), clone, true, cx);
1288            }
1289        }
1290        self.center.split(&pane, &new_pane, direction).unwrap();
1291        cx.notify();
1292        new_pane
1293    }
1294
1295    fn remove_pane(&mut self, pane: ViewHandle<Pane>, cx: &mut ViewContext<Self>) {
1296        if self.center.remove(&pane).unwrap() {
1297            self.panes.retain(|p| p != &pane);
1298            self.activate_pane(self.panes.last().unwrap().clone(), cx);
1299            self.unfollow(&pane, cx);
1300            self.last_leaders_by_pane.remove(&pane.downgrade());
1301            cx.notify();
1302        }
1303    }
1304
1305    pub fn panes(&self) -> &[ViewHandle<Pane>] {
1306        &self.panes
1307    }
1308
1309    fn pane(&self, pane_id: usize) -> Option<ViewHandle<Pane>> {
1310        self.panes.iter().find(|pane| pane.id() == pane_id).cloned()
1311    }
1312
1313    pub fn active_pane(&self) -> &ViewHandle<Pane> {
1314        &self.active_pane
1315    }
1316
1317    fn toggle_share(&mut self, _: &ToggleShare, cx: &mut ViewContext<Self>) {
1318        self.project.update(cx, |project, cx| {
1319            if project.is_local() {
1320                if project.is_shared() {
1321                    project.unshare(cx);
1322                } else {
1323                    project.share(cx).detach();
1324                }
1325            }
1326        });
1327    }
1328
1329    fn project_remote_id_changed(&mut self, remote_id: Option<u64>, cx: &mut ViewContext<Self>) {
1330        if let Some(remote_id) = remote_id {
1331            self.remote_entity_subscription =
1332                Some(self.client.add_view_for_remote_entity(remote_id, cx));
1333        } else {
1334            self.remote_entity_subscription.take();
1335        }
1336    }
1337
1338    fn collaborator_left(&mut self, peer_id: PeerId, cx: &mut ViewContext<Self>) {
1339        self.leader_state.followers.remove(&peer_id);
1340        if let Some(states_by_pane) = self.follower_states_by_leader.remove(&peer_id) {
1341            for state in states_by_pane.into_values() {
1342                for item in state.items_by_leader_view_id.into_values() {
1343                    if let FollowerItem::Loaded(item) = item {
1344                        item.set_leader_replica_id(None, cx);
1345                    }
1346                }
1347            }
1348        }
1349        cx.notify();
1350    }
1351
1352    pub fn toggle_follow(
1353        &mut self,
1354        ToggleFollow(leader_id): &ToggleFollow,
1355        cx: &mut ViewContext<Self>,
1356    ) -> Option<Task<Result<()>>> {
1357        let leader_id = *leader_id;
1358        let pane = self.active_pane().clone();
1359
1360        if let Some(prev_leader_id) = self.unfollow(&pane, cx) {
1361            if leader_id == prev_leader_id {
1362                return None;
1363            }
1364        }
1365
1366        self.last_leaders_by_pane
1367            .insert(pane.downgrade(), leader_id);
1368        self.follower_states_by_leader
1369            .entry(leader_id)
1370            .or_default()
1371            .insert(pane.clone(), Default::default());
1372        cx.notify();
1373
1374        let project_id = self.project.read(cx).remote_id()?;
1375        let request = self.client.request(proto::Follow {
1376            project_id,
1377            leader_id: leader_id.0,
1378        });
1379        Some(cx.spawn_weak(|this, mut cx| async move {
1380            let response = request.await?;
1381            if let Some(this) = this.upgrade(&cx) {
1382                this.update(&mut cx, |this, _| {
1383                    let state = this
1384                        .follower_states_by_leader
1385                        .get_mut(&leader_id)
1386                        .and_then(|states_by_pane| states_by_pane.get_mut(&pane))
1387                        .ok_or_else(|| anyhow!("following interrupted"))?;
1388                    state.active_view_id = response.active_view_id;
1389                    Ok::<_, anyhow::Error>(())
1390                })?;
1391                Self::add_views_from_leader(this, leader_id, vec![pane], response.views, &mut cx)
1392                    .await?;
1393            }
1394            Ok(())
1395        }))
1396    }
1397
1398    pub fn follow_next_collaborator(
1399        &mut self,
1400        _: &FollowNextCollaborator,
1401        cx: &mut ViewContext<Self>,
1402    ) -> Option<Task<Result<()>>> {
1403        let collaborators = self.project.read(cx).collaborators();
1404        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
1405            let mut collaborators = collaborators.keys().copied();
1406            while let Some(peer_id) = collaborators.next() {
1407                if peer_id == leader_id {
1408                    break;
1409                }
1410            }
1411            collaborators.next()
1412        } else if let Some(last_leader_id) =
1413            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
1414        {
1415            if collaborators.contains_key(last_leader_id) {
1416                Some(*last_leader_id)
1417            } else {
1418                None
1419            }
1420        } else {
1421            None
1422        };
1423
1424        next_leader_id
1425            .or_else(|| collaborators.keys().copied().next())
1426            .and_then(|leader_id| self.toggle_follow(&ToggleFollow(leader_id), cx))
1427    }
1428
1429    pub fn unfollow(
1430        &mut self,
1431        pane: &ViewHandle<Pane>,
1432        cx: &mut ViewContext<Self>,
1433    ) -> Option<PeerId> {
1434        for (leader_id, states_by_pane) in &mut self.follower_states_by_leader {
1435            let leader_id = *leader_id;
1436            if let Some(state) = states_by_pane.remove(&pane) {
1437                for (_, item) in state.items_by_leader_view_id {
1438                    if let FollowerItem::Loaded(item) = item {
1439                        item.set_leader_replica_id(None, cx);
1440                    }
1441                }
1442
1443                if states_by_pane.is_empty() {
1444                    self.follower_states_by_leader.remove(&leader_id);
1445                    if let Some(project_id) = self.project.read(cx).remote_id() {
1446                        self.client
1447                            .send(proto::Unfollow {
1448                                project_id,
1449                                leader_id: leader_id.0,
1450                            })
1451                            .log_err();
1452                    }
1453                }
1454
1455                cx.notify();
1456                return Some(leader_id);
1457            }
1458        }
1459        None
1460    }
1461
1462    fn render_connection_status(&self, cx: &mut RenderContext<Self>) -> Option<ElementBox> {
1463        let theme = &cx.global::<Settings>().theme;
1464        match &*self.client.status().borrow() {
1465            client::Status::ConnectionError
1466            | client::Status::ConnectionLost
1467            | client::Status::Reauthenticating
1468            | client::Status::Reconnecting { .. }
1469            | client::Status::ReconnectionError { .. } => Some(
1470                Container::new(
1471                    Align::new(
1472                        ConstrainedBox::new(
1473                            Svg::new("icons/offline-14.svg")
1474                                .with_color(theme.workspace.titlebar.offline_icon.color)
1475                                .boxed(),
1476                        )
1477                        .with_width(theme.workspace.titlebar.offline_icon.width)
1478                        .boxed(),
1479                    )
1480                    .boxed(),
1481                )
1482                .with_style(theme.workspace.titlebar.offline_icon.container)
1483                .boxed(),
1484            ),
1485            client::Status::UpgradeRequired => Some(
1486                Label::new(
1487                    "Please update Zed to collaborate".to_string(),
1488                    theme.workspace.titlebar.outdated_warning.text.clone(),
1489                )
1490                .contained()
1491                .with_style(theme.workspace.titlebar.outdated_warning.container)
1492                .aligned()
1493                .boxed(),
1494            ),
1495            _ => None,
1496        }
1497    }
1498
1499    fn render_titlebar(&self, theme: &Theme, cx: &mut RenderContext<Self>) -> ElementBox {
1500        ConstrainedBox::new(
1501            Container::new(
1502                Stack::new()
1503                    .with_child(
1504                        Align::new(
1505                            Label::new("zed".into(), theme.workspace.titlebar.title.clone())
1506                                .boxed(),
1507                        )
1508                        .boxed(),
1509                    )
1510                    .with_child(
1511                        Align::new(
1512                            Flex::row()
1513                                .with_children(self.render_share_icon(theme, cx))
1514                                .with_children(self.render_collaborators(theme, cx))
1515                                .with_child(self.render_current_user(
1516                                    self.user_store.read(cx).current_user().as_ref(),
1517                                    self.project.read(cx).replica_id(),
1518                                    theme,
1519                                    cx,
1520                                ))
1521                                .with_children(self.render_connection_status(cx))
1522                                .boxed(),
1523                        )
1524                        .right()
1525                        .boxed(),
1526                    )
1527                    .boxed(),
1528            )
1529            .with_style(theme.workspace.titlebar.container)
1530            .boxed(),
1531        )
1532        .with_height(theme.workspace.titlebar.height)
1533        .named("titlebar")
1534    }
1535
1536    fn render_collaborators(&self, theme: &Theme, cx: &mut RenderContext<Self>) -> Vec<ElementBox> {
1537        let mut collaborators = self
1538            .project
1539            .read(cx)
1540            .collaborators()
1541            .values()
1542            .cloned()
1543            .collect::<Vec<_>>();
1544        collaborators.sort_unstable_by_key(|collaborator| collaborator.replica_id);
1545        collaborators
1546            .into_iter()
1547            .filter_map(|collaborator| {
1548                Some(self.render_avatar(
1549                    collaborator.user.avatar.clone()?,
1550                    collaborator.replica_id,
1551                    Some(collaborator.peer_id),
1552                    theme,
1553                    cx,
1554                ))
1555            })
1556            .collect()
1557    }
1558
1559    fn render_current_user(
1560        &self,
1561        user: Option<&Arc<User>>,
1562        replica_id: ReplicaId,
1563        theme: &Theme,
1564        cx: &mut RenderContext<Self>,
1565    ) -> ElementBox {
1566        if let Some(avatar) = user.and_then(|user| user.avatar.clone()) {
1567            self.render_avatar(avatar, replica_id, None, theme, cx)
1568        } else {
1569            MouseEventHandler::new::<Authenticate, _, _>(0, cx, |state, _| {
1570                let style = if state.hovered {
1571                    &theme.workspace.titlebar.hovered_sign_in_prompt
1572                } else {
1573                    &theme.workspace.titlebar.sign_in_prompt
1574                };
1575                Label::new("Sign in".to_string(), style.text.clone())
1576                    .contained()
1577                    .with_style(style.container)
1578                    .boxed()
1579            })
1580            .on_click(|cx| cx.dispatch_action(Authenticate))
1581            .with_cursor_style(CursorStyle::PointingHand)
1582            .aligned()
1583            .boxed()
1584        }
1585    }
1586
1587    fn render_avatar(
1588        &self,
1589        avatar: Arc<ImageData>,
1590        replica_id: ReplicaId,
1591        peer_id: Option<PeerId>,
1592        theme: &Theme,
1593        cx: &mut RenderContext<Self>,
1594    ) -> ElementBox {
1595        let replica_color = theme.editor.replica_selection_style(replica_id).cursor;
1596        let is_followed = peer_id.map_or(false, |peer_id| {
1597            self.follower_states_by_leader.contains_key(&peer_id)
1598        });
1599        let mut avatar_style = theme.workspace.titlebar.avatar;
1600        if is_followed {
1601            avatar_style.border = Border::all(1.0, replica_color);
1602        }
1603        let content = Stack::new()
1604            .with_child(
1605                Image::new(avatar)
1606                    .with_style(avatar_style)
1607                    .constrained()
1608                    .with_width(theme.workspace.titlebar.avatar_width)
1609                    .aligned()
1610                    .boxed(),
1611            )
1612            .with_child(
1613                AvatarRibbon::new(replica_color)
1614                    .constrained()
1615                    .with_width(theme.workspace.titlebar.avatar_ribbon.width)
1616                    .with_height(theme.workspace.titlebar.avatar_ribbon.height)
1617                    .aligned()
1618                    .bottom()
1619                    .boxed(),
1620            )
1621            .constrained()
1622            .with_width(theme.workspace.right_sidebar.width)
1623            .boxed();
1624
1625        if let Some(peer_id) = peer_id {
1626            MouseEventHandler::new::<ToggleFollow, _, _>(replica_id.into(), cx, move |_, _| content)
1627                .with_cursor_style(CursorStyle::PointingHand)
1628                .on_click(move |cx| cx.dispatch_action(ToggleFollow(peer_id)))
1629                .boxed()
1630        } else {
1631            content
1632        }
1633    }
1634
1635    fn render_share_icon(&self, theme: &Theme, cx: &mut RenderContext<Self>) -> Option<ElementBox> {
1636        if self.project().read(cx).is_local() && self.client.user_id().is_some() {
1637            let color = if self.project().read(cx).is_shared() {
1638                theme.workspace.titlebar.share_icon_active_color
1639            } else {
1640                theme.workspace.titlebar.share_icon_color
1641            };
1642            Some(
1643                MouseEventHandler::new::<ToggleShare, _, _>(0, cx, |_, _| {
1644                    Align::new(
1645                        Svg::new("icons/broadcast-24.svg")
1646                            .with_color(color)
1647                            .constrained()
1648                            .with_width(24.)
1649                            .boxed(),
1650                    )
1651                    .boxed()
1652                })
1653                .with_cursor_style(CursorStyle::PointingHand)
1654                .on_click(|cx| cx.dispatch_action(ToggleShare))
1655                .boxed(),
1656            )
1657        } else {
1658            None
1659        }
1660    }
1661
1662    fn render_disconnected_overlay(&self, cx: &AppContext) -> Option<ElementBox> {
1663        if self.project.read(cx).is_read_only() {
1664            let theme = &cx.global::<Settings>().theme;
1665            Some(
1666                EventHandler::new(
1667                    Label::new(
1668                        "Your connection to the remote project has been lost.".to_string(),
1669                        theme.workspace.disconnected_overlay.text.clone(),
1670                    )
1671                    .aligned()
1672                    .contained()
1673                    .with_style(theme.workspace.disconnected_overlay.container)
1674                    .boxed(),
1675                )
1676                .capture(|_, _, _| true)
1677                .boxed(),
1678            )
1679        } else {
1680            None
1681        }
1682    }
1683
1684    // RPC handlers
1685
1686    async fn handle_follow(
1687        this: ViewHandle<Self>,
1688        envelope: TypedEnvelope<proto::Follow>,
1689        _: Arc<Client>,
1690        mut cx: AsyncAppContext,
1691    ) -> Result<proto::FollowResponse> {
1692        this.update(&mut cx, |this, cx| {
1693            this.leader_state
1694                .followers
1695                .insert(envelope.original_sender_id()?);
1696
1697            let active_view_id = this
1698                .active_item(cx)
1699                .and_then(|i| i.to_followable_item_handle(cx))
1700                .map(|i| i.id() as u64);
1701            Ok(proto::FollowResponse {
1702                active_view_id,
1703                views: this
1704                    .panes()
1705                    .iter()
1706                    .flat_map(|pane| {
1707                        let leader_id = this.leader_for_pane(pane).map(|id| id.0);
1708                        pane.read(cx).items().filter_map({
1709                            let cx = &cx;
1710                            move |item| {
1711                                let id = item.id() as u64;
1712                                let item = item.to_followable_item_handle(cx)?;
1713                                let variant = item.to_state_proto(cx)?;
1714                                Some(proto::View {
1715                                    id,
1716                                    leader_id,
1717                                    variant: Some(variant),
1718                                })
1719                            }
1720                        })
1721                    })
1722                    .collect(),
1723            })
1724        })
1725    }
1726
1727    async fn handle_unfollow(
1728        this: ViewHandle<Self>,
1729        envelope: TypedEnvelope<proto::Unfollow>,
1730        _: Arc<Client>,
1731        mut cx: AsyncAppContext,
1732    ) -> Result<()> {
1733        this.update(&mut cx, |this, _| {
1734            this.leader_state
1735                .followers
1736                .remove(&envelope.original_sender_id()?);
1737            Ok(())
1738        })
1739    }
1740
1741    async fn handle_update_followers(
1742        this: ViewHandle<Self>,
1743        envelope: TypedEnvelope<proto::UpdateFollowers>,
1744        _: Arc<Client>,
1745        mut cx: AsyncAppContext,
1746    ) -> Result<()> {
1747        let leader_id = envelope.original_sender_id()?;
1748        match envelope
1749            .payload
1750            .variant
1751            .ok_or_else(|| anyhow!("invalid update"))?
1752        {
1753            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
1754                this.update(&mut cx, |this, cx| {
1755                    this.update_leader_state(leader_id, cx, |state, _| {
1756                        state.active_view_id = update_active_view.id;
1757                    });
1758                    Ok::<_, anyhow::Error>(())
1759                })
1760            }
1761            proto::update_followers::Variant::UpdateView(update_view) => {
1762                this.update(&mut cx, |this, cx| {
1763                    let variant = update_view
1764                        .variant
1765                        .ok_or_else(|| anyhow!("missing update view variant"))?;
1766                    this.update_leader_state(leader_id, cx, |state, cx| {
1767                        let variant = variant.clone();
1768                        match state
1769                            .items_by_leader_view_id
1770                            .entry(update_view.id)
1771                            .or_insert(FollowerItem::Loading(Vec::new()))
1772                        {
1773                            FollowerItem::Loaded(item) => {
1774                                item.apply_update_proto(variant, cx).log_err();
1775                            }
1776                            FollowerItem::Loading(updates) => updates.push(variant),
1777                        }
1778                    });
1779                    Ok(())
1780                })
1781            }
1782            proto::update_followers::Variant::CreateView(view) => {
1783                let panes = this.read_with(&cx, |this, _| {
1784                    this.follower_states_by_leader
1785                        .get(&leader_id)
1786                        .into_iter()
1787                        .flat_map(|states_by_pane| states_by_pane.keys())
1788                        .cloned()
1789                        .collect()
1790                });
1791                Self::add_views_from_leader(this.clone(), leader_id, panes, vec![view], &mut cx)
1792                    .await?;
1793                Ok(())
1794            }
1795        }
1796        .log_err();
1797
1798        Ok(())
1799    }
1800
1801    async fn add_views_from_leader(
1802        this: ViewHandle<Self>,
1803        leader_id: PeerId,
1804        panes: Vec<ViewHandle<Pane>>,
1805        views: Vec<proto::View>,
1806        cx: &mut AsyncAppContext,
1807    ) -> Result<()> {
1808        let project = this.read_with(cx, |this, _| this.project.clone());
1809        let replica_id = project
1810            .read_with(cx, |project, _| {
1811                project
1812                    .collaborators()
1813                    .get(&leader_id)
1814                    .map(|c| c.replica_id)
1815            })
1816            .ok_or_else(|| anyhow!("no such collaborator {}", leader_id))?;
1817
1818        let item_builders = cx.update(|cx| {
1819            cx.default_global::<FollowableItemBuilders>()
1820                .values()
1821                .map(|b| b.0)
1822                .collect::<Vec<_>>()
1823                .clone()
1824        });
1825
1826        let mut item_tasks_by_pane = HashMap::default();
1827        for pane in panes {
1828            let mut item_tasks = Vec::new();
1829            let mut leader_view_ids = Vec::new();
1830            for view in &views {
1831                let mut variant = view.variant.clone();
1832                if variant.is_none() {
1833                    Err(anyhow!("missing variant"))?;
1834                }
1835                for build_item in &item_builders {
1836                    let task =
1837                        cx.update(|cx| build_item(pane.clone(), project.clone(), &mut variant, cx));
1838                    if let Some(task) = task {
1839                        item_tasks.push(task);
1840                        leader_view_ids.push(view.id);
1841                        break;
1842                    } else {
1843                        assert!(variant.is_some());
1844                    }
1845                }
1846            }
1847
1848            item_tasks_by_pane.insert(pane, (item_tasks, leader_view_ids));
1849        }
1850
1851        for (pane, (item_tasks, leader_view_ids)) in item_tasks_by_pane {
1852            let items = futures::future::try_join_all(item_tasks).await?;
1853            this.update(cx, |this, cx| {
1854                let state = this
1855                    .follower_states_by_leader
1856                    .get_mut(&leader_id)?
1857                    .get_mut(&pane)?;
1858
1859                for (id, item) in leader_view_ids.into_iter().zip(items) {
1860                    item.set_leader_replica_id(Some(replica_id), cx);
1861                    match state.items_by_leader_view_id.entry(id) {
1862                        hash_map::Entry::Occupied(e) => {
1863                            let e = e.into_mut();
1864                            if let FollowerItem::Loading(updates) = e {
1865                                for update in updates.drain(..) {
1866                                    item.apply_update_proto(update, cx)
1867                                        .context("failed to apply view update")
1868                                        .log_err();
1869                                }
1870                            }
1871                            *e = FollowerItem::Loaded(item);
1872                        }
1873                        hash_map::Entry::Vacant(e) => {
1874                            e.insert(FollowerItem::Loaded(item));
1875                        }
1876                    }
1877                }
1878
1879                Some(())
1880            });
1881        }
1882        this.update(cx, |this, cx| this.leader_updated(leader_id, cx));
1883
1884        Ok(())
1885    }
1886
1887    fn update_followers(
1888        &self,
1889        update: proto::update_followers::Variant,
1890        cx: &AppContext,
1891    ) -> Option<()> {
1892        let project_id = self.project.read(cx).remote_id()?;
1893        if !self.leader_state.followers.is_empty() {
1894            self.client
1895                .send(proto::UpdateFollowers {
1896                    project_id,
1897                    follower_ids: self.leader_state.followers.iter().map(|f| f.0).collect(),
1898                    variant: Some(update),
1899                })
1900                .log_err();
1901        }
1902        None
1903    }
1904
1905    pub fn leader_for_pane(&self, pane: &ViewHandle<Pane>) -> Option<PeerId> {
1906        self.follower_states_by_leader
1907            .iter()
1908            .find_map(|(leader_id, state)| {
1909                if state.contains_key(pane) {
1910                    Some(*leader_id)
1911                } else {
1912                    None
1913                }
1914            })
1915    }
1916
1917    fn update_leader_state(
1918        &mut self,
1919        leader_id: PeerId,
1920        cx: &mut ViewContext<Self>,
1921        mut update_fn: impl FnMut(&mut FollowerState, &mut ViewContext<Self>),
1922    ) {
1923        for (_, state) in self
1924            .follower_states_by_leader
1925            .get_mut(&leader_id)
1926            .into_iter()
1927            .flatten()
1928        {
1929            update_fn(state, cx);
1930        }
1931        self.leader_updated(leader_id, cx);
1932    }
1933
1934    fn leader_updated(&mut self, leader_id: PeerId, cx: &mut ViewContext<Self>) -> Option<()> {
1935        let mut items_to_add = Vec::new();
1936        for (pane, state) in self.follower_states_by_leader.get(&leader_id)? {
1937            if let Some(active_item) = state
1938                .active_view_id
1939                .and_then(|id| state.items_by_leader_view_id.get(&id))
1940            {
1941                if let FollowerItem::Loaded(item) = active_item {
1942                    items_to_add.push((pane.clone(), item.boxed_clone()));
1943                }
1944            }
1945        }
1946
1947        for (pane, item) in items_to_add {
1948            Pane::add_item(self, pane.clone(), item.boxed_clone(), false, cx);
1949            if pane == self.active_pane {
1950                pane.update(cx, |pane, cx| pane.focus_active_item(cx));
1951            }
1952            cx.notify();
1953        }
1954        None
1955    }
1956}
1957
1958impl Entity for Workspace {
1959    type Event = Event;
1960}
1961
1962impl View for Workspace {
1963    fn ui_name() -> &'static str {
1964        "Workspace"
1965    }
1966
1967    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
1968        let theme = cx.global::<Settings>().theme.clone();
1969        Stack::new()
1970            .with_child(
1971                Flex::column()
1972                    .with_child(self.render_titlebar(&theme, cx))
1973                    .with_child(
1974                        Stack::new()
1975                            .with_child({
1976                                let mut content = Flex::row();
1977                                content.add_child(self.left_sidebar.render(&theme, cx));
1978                                if let Some(element) =
1979                                    self.left_sidebar.render_active_item(&theme, cx)
1980                                {
1981                                    content
1982                                        .add_child(FlexItem::new(element).flex(0.8, false).boxed());
1983                                }
1984                                content.add_child(
1985                                    Flex::column()
1986                                        .with_child(
1987                                            FlexItem::new(self.center.render(
1988                                                &theme,
1989                                                &self.follower_states_by_leader,
1990                                                self.project.read(cx).collaborators(),
1991                                            ))
1992                                            .flex(1., true)
1993                                            .boxed(),
1994                                        )
1995                                        .with_child(ChildView::new(&self.status_bar).boxed())
1996                                        .flex(1., true)
1997                                        .boxed(),
1998                                );
1999                                if let Some(element) =
2000                                    self.right_sidebar.render_active_item(&theme, cx)
2001                                {
2002                                    content
2003                                        .add_child(FlexItem::new(element).flex(0.8, false).boxed());
2004                                }
2005                                content.add_child(self.right_sidebar.render(&theme, cx));
2006                                content.boxed()
2007                            })
2008                            .with_children(self.modal.as_ref().map(|m| ChildView::new(m).boxed()))
2009                            .flex(1.0, true)
2010                            .boxed(),
2011                    )
2012                    .contained()
2013                    .with_background_color(theme.workspace.background)
2014                    .boxed(),
2015            )
2016            .with_children(self.render_disconnected_overlay(cx))
2017            .named("workspace")
2018    }
2019
2020    fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
2021        cx.focus(&self.active_pane);
2022    }
2023}
2024
2025pub trait WorkspaceHandle {
2026    fn file_project_paths(&self, cx: &AppContext) -> Vec<ProjectPath>;
2027}
2028
2029impl WorkspaceHandle for ViewHandle<Workspace> {
2030    fn file_project_paths(&self, cx: &AppContext) -> Vec<ProjectPath> {
2031        self.read(cx)
2032            .worktrees(cx)
2033            .flat_map(|worktree| {
2034                let worktree_id = worktree.read(cx).id();
2035                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
2036                    worktree_id,
2037                    path: f.path.clone(),
2038                })
2039            })
2040            .collect::<Vec<_>>()
2041    }
2042}
2043
2044pub struct AvatarRibbon {
2045    color: Color,
2046}
2047
2048impl AvatarRibbon {
2049    pub fn new(color: Color) -> AvatarRibbon {
2050        AvatarRibbon { color }
2051    }
2052}
2053
2054impl Element for AvatarRibbon {
2055    type LayoutState = ();
2056
2057    type PaintState = ();
2058
2059    fn layout(
2060        &mut self,
2061        constraint: gpui::SizeConstraint,
2062        _: &mut gpui::LayoutContext,
2063    ) -> (gpui::geometry::vector::Vector2F, Self::LayoutState) {
2064        (constraint.max, ())
2065    }
2066
2067    fn paint(
2068        &mut self,
2069        bounds: gpui::geometry::rect::RectF,
2070        _: gpui::geometry::rect::RectF,
2071        _: &mut Self::LayoutState,
2072        cx: &mut gpui::PaintContext,
2073    ) -> Self::PaintState {
2074        let mut path = PathBuilder::new();
2075        path.reset(bounds.lower_left());
2076        path.curve_to(
2077            bounds.origin() + vec2f(bounds.height(), 0.),
2078            bounds.origin(),
2079        );
2080        path.line_to(bounds.upper_right() - vec2f(bounds.height(), 0.));
2081        path.curve_to(bounds.lower_right(), bounds.upper_right());
2082        path.line_to(bounds.lower_left());
2083        cx.scene.push_path(path.build(self.color, None));
2084    }
2085
2086    fn dispatch_event(
2087        &mut self,
2088        _: &gpui::Event,
2089        _: RectF,
2090        _: RectF,
2091        _: &mut Self::LayoutState,
2092        _: &mut Self::PaintState,
2093        _: &mut gpui::EventContext,
2094    ) -> bool {
2095        false
2096    }
2097
2098    fn debug(
2099        &self,
2100        bounds: gpui::geometry::rect::RectF,
2101        _: &Self::LayoutState,
2102        _: &Self::PaintState,
2103        _: &gpui::DebugContext,
2104    ) -> gpui::json::Value {
2105        json::json!({
2106            "type": "AvatarRibbon",
2107            "bounds": bounds.to_json(),
2108            "color": self.color.to_json(),
2109        })
2110    }
2111}
2112
2113impl std::fmt::Debug for OpenPaths {
2114    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
2115        f.debug_struct("OpenPaths")
2116            .field("paths", &self.paths)
2117            .finish()
2118    }
2119}
2120
2121fn open(action: &Open, cx: &mut MutableAppContext) {
2122    let app_state = action.0.clone();
2123    let mut paths = cx.prompt_for_paths(PathPromptOptions {
2124        files: true,
2125        directories: true,
2126        multiple: true,
2127    });
2128    cx.spawn(|mut cx| async move {
2129        if let Some(paths) = paths.recv().await.flatten() {
2130            cx.update(|cx| cx.dispatch_global_action(OpenPaths { paths, app_state }));
2131        }
2132    })
2133    .detach();
2134}
2135
2136pub struct WorkspaceCreated(WeakViewHandle<Workspace>);
2137
2138pub fn open_paths(
2139    abs_paths: &[PathBuf],
2140    app_state: &Arc<AppState>,
2141    cx: &mut MutableAppContext,
2142) -> Task<ViewHandle<Workspace>> {
2143    log::info!("open paths {:?}", abs_paths);
2144
2145    // Open paths in existing workspace if possible
2146    let mut existing = None;
2147    for window_id in cx.window_ids().collect::<Vec<_>>() {
2148        if let Some(workspace_handle) = cx.root_view::<Workspace>(window_id) {
2149            if workspace_handle.update(cx, |workspace, cx| {
2150                if workspace.contains_paths(abs_paths, cx.as_ref()) {
2151                    cx.activate_window(window_id);
2152                    existing = Some(workspace_handle.clone());
2153                    true
2154                } else {
2155                    false
2156                }
2157            }) {
2158                break;
2159            }
2160        }
2161    }
2162
2163    let workspace = existing.unwrap_or_else(|| {
2164        cx.add_window((app_state.build_window_options)(), |cx| {
2165            let project = Project::local(
2166                app_state.client.clone(),
2167                app_state.user_store.clone(),
2168                app_state.languages.clone(),
2169                app_state.fs.clone(),
2170                cx,
2171            );
2172            (app_state.build_workspace)(project, &app_state, cx)
2173        })
2174        .1
2175    });
2176
2177    let task = workspace.update(cx, |workspace, cx| workspace.open_paths(abs_paths, cx));
2178    cx.spawn(|_| async move {
2179        task.await;
2180        workspace
2181    })
2182}
2183
2184pub fn join_project(
2185    project_id: u64,
2186    app_state: &Arc<AppState>,
2187    cx: &mut MutableAppContext,
2188) -> Task<Result<ViewHandle<Workspace>>> {
2189    for window_id in cx.window_ids().collect::<Vec<_>>() {
2190        if let Some(workspace) = cx.root_view::<Workspace>(window_id) {
2191            if workspace.read(cx).project().read(cx).remote_id() == Some(project_id) {
2192                return Task::ready(Ok(workspace));
2193            }
2194        }
2195    }
2196
2197    let app_state = app_state.clone();
2198    cx.spawn(|mut cx| async move {
2199        let project = Project::remote(
2200            project_id,
2201            app_state.client.clone(),
2202            app_state.user_store.clone(),
2203            app_state.languages.clone(),
2204            app_state.fs.clone(),
2205            &mut cx,
2206        )
2207        .await?;
2208        Ok(cx.update(|cx| {
2209            cx.add_window((app_state.build_window_options)(), |cx| {
2210                (app_state.build_workspace)(project, &app_state, cx)
2211            })
2212            .1
2213        }))
2214    })
2215}
2216
2217fn open_new(app_state: &Arc<AppState>, cx: &mut MutableAppContext) {
2218    let (window_id, workspace) = cx.add_window((app_state.build_window_options)(), |cx| {
2219        let project = Project::local(
2220            app_state.client.clone(),
2221            app_state.user_store.clone(),
2222            app_state.languages.clone(),
2223            app_state.fs.clone(),
2224            cx,
2225        );
2226        (app_state.build_workspace)(project, &app_state, cx)
2227    });
2228    cx.dispatch_action(window_id, vec![workspace.id()], &OpenNew(app_state.clone()));
2229}