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