1use anyhow::Result;
2use call::ActiveCall;
3use channel::{Channel, ChannelBuffer, ChannelBufferEvent, ChannelStore};
4use client::{
5 ChannelId, Collaborator, ParticipantIndex,
6 proto::{self, PeerId},
7};
8use collections::HashMap;
9use editor::{
10 CollaborationHub, DisplayPoint, Editor, EditorEvent, display_map::ToDisplayPoint,
11 scroll::Autoscroll,
12};
13use gpui::{
14 AnyView, App, ClipboardItem, Context, Entity, EventEmitter, Focusable, Pixels, Point, Render,
15 Subscription, Task, VisualContext as _, WeakEntity, Window, actions,
16};
17use project::Project;
18use rpc::proto::ChannelVisibility;
19use std::{
20 any::{Any, TypeId},
21 sync::Arc,
22};
23use ui::prelude::*;
24use util::ResultExt;
25use workspace::item::TabContentParams;
26use workspace::{
27 ItemNavHistory, Pane, SaveIntent, Toast, ViewId, Workspace, WorkspaceId,
28 item::{FollowableItem, Item, ItemEvent, ItemHandle},
29 searchable::SearchableItemHandle,
30};
31use workspace::{item::Dedup, notifications::NotificationId};
32
33actions!(collab, [CopyLink]);
34
35pub fn init(cx: &mut App) {
36 workspace::FollowableViewRegistry::register::<ChannelView>(cx)
37}
38
39pub struct ChannelView {
40 pub editor: Entity<Editor>,
41 workspace: WeakEntity<Workspace>,
42 project: Entity<Project>,
43 channel_store: Entity<ChannelStore>,
44 channel_buffer: Entity<ChannelBuffer>,
45 remote_id: Option<ViewId>,
46 _editor_event_subscription: Subscription,
47 _reparse_subscription: Option<Subscription>,
48}
49
50impl ChannelView {
51 pub fn open(
52 channel_id: ChannelId,
53 link_position: Option<String>,
54 workspace: Entity<Workspace>,
55 window: &mut Window,
56 cx: &mut App,
57 ) -> Task<Result<Entity<Self>>> {
58 let pane = workspace.read(cx).active_pane().clone();
59 let channel_view = Self::open_in_pane(
60 channel_id,
61 link_position,
62 pane.clone(),
63 workspace.clone(),
64 window,
65 cx,
66 );
67 window.spawn(cx, async move |cx| {
68 let channel_view = channel_view.await?;
69 pane.update_in(cx, |pane, window, cx| {
70 telemetry::event!(
71 "Channel Notes Opened",
72 channel_id,
73 room_id = ActiveCall::global(cx)
74 .read(cx)
75 .room()
76 .map(|r| r.read(cx).id())
77 );
78 pane.add_item(Box::new(channel_view.clone()), true, true, None, window, cx);
79 })?;
80 anyhow::Ok(channel_view)
81 })
82 }
83
84 pub fn open_in_pane(
85 channel_id: ChannelId,
86 link_position: Option<String>,
87 pane: Entity<Pane>,
88 workspace: Entity<Workspace>,
89 window: &mut Window,
90 cx: &mut App,
91 ) -> Task<Result<Entity<Self>>> {
92 let channel_view = Self::load(channel_id, workspace, window, cx);
93 window.spawn(cx, async move |cx| {
94 let channel_view = channel_view.await?;
95
96 pane.update_in(cx, |pane, window, cx| {
97 let buffer_id = channel_view.read(cx).channel_buffer.read(cx).remote_id(cx);
98
99 let existing_view = pane
100 .items_of_type::<Self>()
101 .find(|view| view.read(cx).channel_buffer.read(cx).remote_id(cx) == buffer_id);
102
103 // If this channel buffer is already open in this pane, just return it.
104 if let Some(existing_view) = existing_view.clone() {
105 if existing_view.read(cx).channel_buffer == channel_view.read(cx).channel_buffer
106 {
107 if let Some(link_position) = link_position {
108 existing_view.update(cx, |channel_view, cx| {
109 channel_view.focus_position_from_link(
110 link_position,
111 true,
112 window,
113 cx,
114 )
115 });
116 }
117 return existing_view;
118 }
119 }
120
121 // If the pane contained a disconnected view for this channel buffer,
122 // replace that.
123 if let Some(existing_item) = existing_view {
124 if let Some(ix) = pane.index_for_item(&existing_item) {
125 pane.close_item_by_id(
126 existing_item.entity_id(),
127 SaveIntent::Skip,
128 window,
129 cx,
130 )
131 .detach();
132 pane.add_item(
133 Box::new(channel_view.clone()),
134 true,
135 true,
136 Some(ix),
137 window,
138 cx,
139 );
140 }
141 }
142
143 if let Some(link_position) = link_position {
144 channel_view.update(cx, |channel_view, cx| {
145 channel_view.focus_position_from_link(link_position, true, window, cx)
146 });
147 }
148
149 channel_view
150 })
151 })
152 }
153
154 pub fn load(
155 channel_id: ChannelId,
156 workspace: Entity<Workspace>,
157 window: &mut Window,
158 cx: &mut App,
159 ) -> Task<Result<Entity<Self>>> {
160 let weak_workspace = workspace.downgrade();
161 let workspace = workspace.read(cx);
162 let project = workspace.project().to_owned();
163 let channel_store = ChannelStore::global(cx);
164 let language_registry = workspace.app_state().languages.clone();
165 let markdown = language_registry.language_for_name("Markdown");
166 let channel_buffer =
167 channel_store.update(cx, |store, cx| store.open_channel_buffer(channel_id, cx));
168
169 window.spawn(cx, async move |cx| {
170 let channel_buffer = channel_buffer.await?;
171 let markdown = markdown.await.log_err();
172
173 channel_buffer.update(cx, |channel_buffer, cx| {
174 channel_buffer.buffer().update(cx, |buffer, cx| {
175 buffer.set_language_registry(language_registry);
176 let Some(markdown) = markdown else {
177 return;
178 };
179 buffer.set_language(Some(markdown), cx);
180 })
181 })?;
182
183 cx.new_window_entity(|window, cx| {
184 let mut this = Self::new(
185 project,
186 weak_workspace,
187 channel_store,
188 channel_buffer,
189 window,
190 cx,
191 );
192 this.acknowledge_buffer_version(cx);
193 this
194 })
195 })
196 }
197
198 pub fn new(
199 project: Entity<Project>,
200 workspace: WeakEntity<Workspace>,
201 channel_store: Entity<ChannelStore>,
202 channel_buffer: Entity<ChannelBuffer>,
203 window: &mut Window,
204 cx: &mut Context<Self>,
205 ) -> Self {
206 let buffer = channel_buffer.read(cx).buffer();
207 let this = cx.entity().downgrade();
208 let editor = cx.new(|cx| {
209 let mut editor = Editor::for_buffer(buffer, None, window, cx);
210 editor.set_collaboration_hub(Box::new(ChannelBufferCollaborationHub(
211 channel_buffer.clone(),
212 )));
213 editor.set_custom_context_menu(move |_, position, window, cx| {
214 let this = this.clone();
215 Some(ui::ContextMenu::build(window, cx, move |menu, _, _| {
216 menu.entry("Copy link to section", None, move |window, cx| {
217 this.update(cx, |this, cx| {
218 this.copy_link_for_position(position, window, cx)
219 })
220 .ok();
221 })
222 }))
223 });
224 editor
225 });
226 let _editor_event_subscription =
227 cx.subscribe(&editor, |_, _, e: &EditorEvent, cx| cx.emit(e.clone()));
228
229 cx.subscribe_in(&channel_buffer, window, Self::handle_channel_buffer_event)
230 .detach();
231
232 Self {
233 editor,
234 workspace,
235 project,
236 channel_store,
237 channel_buffer,
238 remote_id: None,
239 _editor_event_subscription,
240 _reparse_subscription: None,
241 }
242 }
243
244 fn focus_position_from_link(
245 &mut self,
246 position: String,
247 first_attempt: bool,
248 window: &mut Window,
249 cx: &mut Context<Self>,
250 ) {
251 let position = Channel::slug(&position).to_lowercase();
252 let snapshot = self
253 .editor
254 .update(cx, |editor, cx| editor.snapshot(window, cx));
255
256 if let Some(outline) = snapshot.buffer_snapshot.outline(None) {
257 if let Some(item) = outline
258 .items
259 .iter()
260 .find(|item| &Channel::slug(&item.text).to_lowercase() == &position)
261 {
262 self.editor.update(cx, |editor, cx| {
263 editor.change_selections(Some(Autoscroll::focused()), window, cx, |s| {
264 s.replace_cursors_with(|map| vec![item.range.start.to_display_point(map)])
265 })
266 });
267 return;
268 }
269 }
270
271 if !first_attempt {
272 return;
273 }
274 self._reparse_subscription = Some(cx.subscribe_in(
275 &self.editor,
276 window,
277 move |this, _, e: &EditorEvent, window, cx| {
278 match e {
279 EditorEvent::Reparsed(_) => {
280 this.focus_position_from_link(position.clone(), false, window, cx);
281 this._reparse_subscription.take();
282 }
283 EditorEvent::Edited { .. } | EditorEvent::SelectionsChanged { local: true } => {
284 this._reparse_subscription.take();
285 }
286 _ => {}
287 };
288 },
289 ));
290 }
291
292 fn copy_link(&mut self, _: &CopyLink, window: &mut Window, cx: &mut Context<Self>) {
293 let position = self
294 .editor
295 .update(cx, |editor, cx| editor.selections.newest_display(cx).start);
296 self.copy_link_for_position(position, window, cx)
297 }
298
299 fn copy_link_for_position(
300 &self,
301 position: DisplayPoint,
302 window: &mut Window,
303 cx: &mut Context<Self>,
304 ) {
305 let snapshot = self
306 .editor
307 .update(cx, |editor, cx| editor.snapshot(window, cx));
308
309 let mut closest_heading = None;
310
311 if let Some(outline) = snapshot.buffer_snapshot.outline(None) {
312 for item in outline.items {
313 if item.range.start.to_display_point(&snapshot) > position {
314 break;
315 }
316 closest_heading = Some(item);
317 }
318 }
319
320 let Some(channel) = self.channel(cx) else {
321 return;
322 };
323
324 let link = channel.notes_link(closest_heading.map(|heading| heading.text), cx);
325 cx.write_to_clipboard(ClipboardItem::new_string(link));
326 self.workspace
327 .update(cx, |workspace, cx| {
328 struct CopyLinkForPositionToast;
329
330 workspace.show_toast(
331 Toast::new(
332 NotificationId::unique::<CopyLinkForPositionToast>(),
333 "Link copied to clipboard",
334 ),
335 cx,
336 );
337 })
338 .ok();
339 }
340
341 pub fn channel(&self, cx: &App) -> Option<Arc<Channel>> {
342 self.channel_buffer.read(cx).channel(cx)
343 }
344
345 fn handle_channel_buffer_event(
346 &mut self,
347 _: &Entity<ChannelBuffer>,
348 event: &ChannelBufferEvent,
349 window: &mut Window,
350 cx: &mut Context<Self>,
351 ) {
352 match event {
353 ChannelBufferEvent::Disconnected => self.editor.update(cx, |editor, cx| {
354 editor.set_read_only(true);
355 cx.notify();
356 }),
357 ChannelBufferEvent::ChannelChanged => {
358 self.editor.update(cx, |_, cx| {
359 cx.emit(editor::EditorEvent::TitleChanged);
360 cx.notify()
361 });
362 }
363 ChannelBufferEvent::BufferEdited => {
364 if self.editor.read(cx).is_focused(window) {
365 self.acknowledge_buffer_version(cx);
366 } else {
367 self.channel_store.update(cx, |store, cx| {
368 let channel_buffer = self.channel_buffer.read(cx);
369 store.update_latest_notes_version(
370 channel_buffer.channel_id,
371 channel_buffer.epoch(),
372 &channel_buffer.buffer().read(cx).version(),
373 cx,
374 )
375 });
376 }
377 }
378 ChannelBufferEvent::CollaboratorsChanged => {}
379 }
380 }
381
382 fn acknowledge_buffer_version(&mut self, cx: &mut Context<ChannelView>) {
383 self.channel_store.update(cx, |store, cx| {
384 let channel_buffer = self.channel_buffer.read(cx);
385 store.acknowledge_notes_version(
386 channel_buffer.channel_id,
387 channel_buffer.epoch(),
388 &channel_buffer.buffer().read(cx).version(),
389 cx,
390 )
391 });
392 self.channel_buffer.update(cx, |buffer, cx| {
393 buffer.acknowledge_buffer_version(cx);
394 });
395 }
396}
397
398impl EventEmitter<EditorEvent> for ChannelView {}
399
400impl Render for ChannelView {
401 fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
402 div()
403 .size_full()
404 .on_action(cx.listener(Self::copy_link))
405 .child(self.editor.clone())
406 }
407}
408
409impl Focusable for ChannelView {
410 fn focus_handle(&self, cx: &App) -> gpui::FocusHandle {
411 self.editor.read(cx).focus_handle(cx)
412 }
413}
414
415impl Item for ChannelView {
416 type Event = EditorEvent;
417
418 fn act_as_type<'a>(
419 &'a self,
420 type_id: TypeId,
421 self_handle: &'a Entity<Self>,
422 _: &'a App,
423 ) -> Option<AnyView> {
424 if type_id == TypeId::of::<Self>() {
425 Some(self_handle.to_any())
426 } else if type_id == TypeId::of::<Editor>() {
427 Some(self.editor.to_any())
428 } else {
429 None
430 }
431 }
432
433 fn tab_icon(&self, _: &Window, cx: &App) -> Option<Icon> {
434 let channel = self.channel(cx)?;
435 let icon = match channel.visibility {
436 ChannelVisibility::Public => IconName::Public,
437 ChannelVisibility::Members => IconName::Hash,
438 };
439
440 Some(Icon::new(icon))
441 }
442
443 fn tab_content(&self, params: TabContentParams, _: &Window, cx: &App) -> gpui::AnyElement {
444 let (channel_name, status) = if let Some(channel) = self.channel(cx) {
445 let status = match (
446 self.channel_buffer.read(cx).buffer().read(cx).read_only(),
447 self.channel_buffer.read(cx).is_connected(),
448 ) {
449 (false, true) => None,
450 (true, true) => Some("read-only"),
451 (_, false) => Some("disconnected"),
452 };
453
454 (channel.name.clone(), status)
455 } else {
456 ("<unknown>".into(), Some("disconnected"))
457 };
458
459 h_flex()
460 .gap_2()
461 .child(
462 Label::new(channel_name)
463 .color(params.text_color())
464 .when(params.preview, |this| this.italic()),
465 )
466 .when_some(status, |element, status| {
467 element.child(
468 Label::new(status)
469 .size(LabelSize::XSmall)
470 .color(Color::Muted),
471 )
472 })
473 .into_any_element()
474 }
475
476 fn telemetry_event_text(&self) -> Option<&'static str> {
477 None
478 }
479
480 fn clone_on_split(
481 &self,
482 _: Option<WorkspaceId>,
483 window: &mut Window,
484 cx: &mut Context<Self>,
485 ) -> Option<Entity<Self>> {
486 Some(cx.new(|cx| {
487 Self::new(
488 self.project.clone(),
489 self.workspace.clone(),
490 self.channel_store.clone(),
491 self.channel_buffer.clone(),
492 window,
493 cx,
494 )
495 }))
496 }
497
498 fn is_singleton(&self, _cx: &App) -> bool {
499 false
500 }
501
502 fn navigate(
503 &mut self,
504 data: Box<dyn Any>,
505 window: &mut Window,
506 cx: &mut Context<Self>,
507 ) -> bool {
508 self.editor
509 .update(cx, |editor, cx| editor.navigate(data, window, cx))
510 }
511
512 fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
513 self.editor
514 .update(cx, |item, cx| item.deactivated(window, cx))
515 }
516
517 fn set_nav_history(
518 &mut self,
519 history: ItemNavHistory,
520 window: &mut Window,
521 cx: &mut Context<Self>,
522 ) {
523 self.editor.update(cx, |editor, cx| {
524 Item::set_nav_history(editor, history, window, cx)
525 })
526 }
527
528 fn as_searchable(&self, _: &Entity<Self>) -> Option<Box<dyn SearchableItemHandle>> {
529 Some(Box::new(self.editor.clone()))
530 }
531
532 fn show_toolbar(&self) -> bool {
533 true
534 }
535
536 fn pixel_position_of_cursor(&self, cx: &App) -> Option<Point<Pixels>> {
537 self.editor.read(cx).pixel_position_of_cursor(cx)
538 }
539
540 fn to_item_events(event: &EditorEvent, f: impl FnMut(ItemEvent)) {
541 Editor::to_item_events(event, f)
542 }
543
544 fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
545 "Channels".into()
546 }
547}
548
549impl FollowableItem for ChannelView {
550 fn remote_id(&self) -> Option<workspace::ViewId> {
551 self.remote_id
552 }
553
554 fn to_state_proto(&self, window: &Window, cx: &App) -> Option<proto::view::Variant> {
555 let channel_buffer = self.channel_buffer.read(cx);
556 if !channel_buffer.is_connected() {
557 return None;
558 }
559
560 Some(proto::view::Variant::ChannelView(
561 proto::view::ChannelView {
562 channel_id: channel_buffer.channel_id.0,
563 editor: if let Some(proto::view::Variant::Editor(proto)) =
564 self.editor.read(cx).to_state_proto(window, cx)
565 {
566 Some(proto)
567 } else {
568 None
569 },
570 },
571 ))
572 }
573
574 fn from_state_proto(
575 workspace: Entity<workspace::Workspace>,
576 remote_id: workspace::ViewId,
577 state: &mut Option<proto::view::Variant>,
578 window: &mut Window,
579 cx: &mut App,
580 ) -> Option<gpui::Task<anyhow::Result<Entity<Self>>>> {
581 let Some(proto::view::Variant::ChannelView(_)) = state else {
582 return None;
583 };
584 let Some(proto::view::Variant::ChannelView(state)) = state.take() else {
585 unreachable!()
586 };
587
588 let open = ChannelView::load(ChannelId(state.channel_id), workspace, window, cx);
589
590 Some(window.spawn(cx, async move |cx| {
591 let this = open.await?;
592
593 let task = this.update_in(cx, |this, window, cx| {
594 this.remote_id = Some(remote_id);
595
596 if let Some(state) = state.editor {
597 Some(this.editor.update(cx, |editor, cx| {
598 editor.apply_update_proto(
599 &this.project,
600 proto::update_view::Variant::Editor(proto::update_view::Editor {
601 selections: state.selections,
602 pending_selection: state.pending_selection,
603 scroll_top_anchor: state.scroll_top_anchor,
604 scroll_x: state.scroll_x,
605 scroll_y: state.scroll_y,
606 ..Default::default()
607 }),
608 window,
609 cx,
610 )
611 }))
612 } else {
613 None
614 }
615 })?;
616
617 if let Some(task) = task {
618 task.await?;
619 }
620
621 Ok(this)
622 }))
623 }
624
625 fn add_event_to_update_proto(
626 &self,
627 event: &EditorEvent,
628 update: &mut Option<proto::update_view::Variant>,
629 window: &Window,
630 cx: &App,
631 ) -> bool {
632 self.editor
633 .read(cx)
634 .add_event_to_update_proto(event, update, window, cx)
635 }
636
637 fn apply_update_proto(
638 &mut self,
639 project: &Entity<Project>,
640 message: proto::update_view::Variant,
641 window: &mut Window,
642 cx: &mut Context<Self>,
643 ) -> gpui::Task<anyhow::Result<()>> {
644 self.editor.update(cx, |editor, cx| {
645 editor.apply_update_proto(project, message, window, cx)
646 })
647 }
648
649 fn set_leader_peer_id(
650 &mut self,
651 leader_peer_id: Option<PeerId>,
652 window: &mut Window,
653 cx: &mut Context<Self>,
654 ) {
655 self.editor.update(cx, |editor, cx| {
656 editor.set_leader_peer_id(leader_peer_id, window, cx)
657 })
658 }
659
660 fn is_project_item(&self, _window: &Window, _cx: &App) -> bool {
661 false
662 }
663
664 fn to_follow_event(event: &Self::Event) -> Option<workspace::item::FollowEvent> {
665 Editor::to_follow_event(event)
666 }
667
668 fn dedup(&self, existing: &Self, _: &Window, cx: &App) -> Option<Dedup> {
669 let existing = existing.channel_buffer.read(cx);
670 if self.channel_buffer.read(cx).channel_id == existing.channel_id {
671 if existing.is_connected() {
672 Some(Dedup::KeepExisting)
673 } else {
674 Some(Dedup::ReplaceExisting)
675 }
676 } else {
677 None
678 }
679 }
680}
681
682struct ChannelBufferCollaborationHub(Entity<ChannelBuffer>);
683
684impl CollaborationHub for ChannelBufferCollaborationHub {
685 fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
686 self.0.read(cx).collaborators()
687 }
688
689 fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
690 self.0.read(cx).user_store().read(cx).participant_indices()
691 }
692
693 fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
694 let user_ids = self.collaborators(cx).values().map(|c| c.user_id);
695 self.0
696 .read(cx)
697 .user_store()
698 .read(cx)
699 .participant_names(user_ids, cx)
700 }
701}