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