1use crate::{
2 display_map::ToDisplayPoint, link_go_to_definition::hide_link_definition,
3 movement::surrounding_word, persistence::DB, scroll::ScrollAnchor, Anchor, Autoscroll, Editor,
4 Event, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot, NavigationData, ToPoint as _,
5};
6use anyhow::{anyhow, Context, Result};
7use collections::HashSet;
8use futures::future::try_join_all;
9use gpui::{
10 point, AnyElement, AppContext, AsyncAppContext, Entity, EntityId, Model, Pixels, SharedString,
11 Subscription, Task, View, ViewContext, VisualContext, WeakView,
12};
13use language::{
14 proto::serialize_anchor as serialize_text_anchor, Bias, Buffer, OffsetRangeExt, Point,
15 SelectionGoal,
16};
17use project::{search::SearchQuery, FormatTrigger, Item as _, Project, ProjectPath};
18use rpc::proto::{self, update_view, PeerId};
19use smallvec::SmallVec;
20use std::{
21 borrow::Cow,
22 cmp::{self, Ordering},
23 iter,
24 ops::Range,
25 path::{Path, PathBuf},
26 sync::Arc,
27};
28use text::Selection;
29use theme::ThemeVariant;
30use util::{paths::PathExt, ResultExt, TryFutureExt};
31use workspace::item::{BreadcrumbText, FollowableItemHandle};
32use workspace::{
33 item::{FollowableItem, Item, ItemEvent, ItemHandle, ProjectItem},
34 searchable::{Direction, SearchEvent, SearchableItem, SearchableItemHandle},
35 ItemId, ItemNavHistory, Pane, ToolbarItemLocation, ViewId, Workspace, WorkspaceId,
36};
37
38pub const MAX_TAB_TITLE_LEN: usize = 24;
39
40impl FollowableItem for Editor {
41 fn remote_id(&self) -> Option<ViewId> {
42 self.remote_id
43 }
44
45 fn from_state_proto(
46 pane: View<workspace::Pane>,
47 workspace: View<Workspace>,
48 remote_id: ViewId,
49 state: &mut Option<proto::view::Variant>,
50 cx: &mut AppContext,
51 ) -> Option<Task<Result<View<Self>>>> {
52 todo!()
53 }
54 // let project = workspace.read(cx).project().to_owned();
55 // let Some(proto::view::Variant::Editor(_)) = state else {
56 // return None;
57 // };
58 // let Some(proto::view::Variant::Editor(state)) = state.take() else {
59 // unreachable!()
60 // };
61
62 // let client = project.read(cx).client();
63 // let replica_id = project.read(cx).replica_id();
64 // let buffer_ids = state
65 // .excerpts
66 // .iter()
67 // .map(|excerpt| excerpt.buffer_id)
68 // .collect::<HashSet<_>>();
69 // let buffers = project.update(cx, |project, cx| {
70 // buffer_ids
71 // .iter()
72 // .map(|id| project.open_buffer_by_id(*id, cx))
73 // .collect::<Vec<_>>()
74 // });
75
76 // let pane = pane.downgrade();
77 // Some(cx.spawn(|mut cx| async move {
78 // let mut buffers = futures::future::try_join_all(buffers).await?;
79 // let editor = pane.read_with(&cx, |pane, cx| {
80 // let mut editors = pane.items_of_type::<Self>();
81 // editors.find(|editor| {
82 // let ids_match = editor.remote_id(&client, cx) == Some(remote_id);
83 // let singleton_buffer_matches = state.singleton
84 // && buffers.first()
85 // == editor.read(cx).buffer.read(cx).as_singleton().as_ref();
86 // ids_match || singleton_buffer_matches
87 // })
88 // })?;
89
90 // let editor = if let Some(editor) = editor {
91 // editor
92 // } else {
93 // pane.update(&mut cx, |_, cx| {
94 // let multibuffer = cx.add_model(|cx| {
95 // let mut multibuffer;
96 // if state.singleton && buffers.len() == 1 {
97 // multibuffer = MultiBuffer::singleton(buffers.pop().unwrap(), cx)
98 // } else {
99 // multibuffer = MultiBuffer::new(replica_id);
100 // let mut excerpts = state.excerpts.into_iter().peekable();
101 // while let Some(excerpt) = excerpts.peek() {
102 // let buffer_id = excerpt.buffer_id;
103 // let buffer_excerpts = iter::from_fn(|| {
104 // let excerpt = excerpts.peek()?;
105 // (excerpt.buffer_id == buffer_id)
106 // .then(|| excerpts.next().unwrap())
107 // });
108 // let buffer =
109 // buffers.iter().find(|b| b.read(cx).remote_id() == buffer_id);
110 // if let Some(buffer) = buffer {
111 // multibuffer.push_excerpts(
112 // buffer.clone(),
113 // buffer_excerpts.filter_map(deserialize_excerpt_range),
114 // cx,
115 // );
116 // }
117 // }
118 // };
119
120 // if let Some(title) = &state.title {
121 // multibuffer = multibuffer.with_title(title.clone())
122 // }
123
124 // multibuffer
125 // });
126
127 // cx.add_view(|cx| {
128 // let mut editor =
129 // Editor::for_multibuffer(multibuffer, Some(project.clone()), cx);
130 // editor.remote_id = Some(remote_id);
131 // editor
132 // })
133 // })?
134 // };
135
136 // update_editor_from_message(
137 // editor.downgrade(),
138 // project,
139 // proto::update_view::Editor {
140 // selections: state.selections,
141 // pending_selection: state.pending_selection,
142 // scroll_top_anchor: state.scroll_top_anchor,
143 // scroll_x: state.scroll_x,
144 // scroll_y: state.scroll_y,
145 // ..Default::default()
146 // },
147 // &mut cx,
148 // )
149 // .await?;
150
151 // Ok(editor)
152 // }))
153 // }
154
155 fn set_leader_peer_id(&mut self, leader_peer_id: Option<PeerId>, cx: &mut ViewContext<Self>) {
156 self.leader_peer_id = leader_peer_id;
157 if self.leader_peer_id.is_some() {
158 self.buffer.update(cx, |buffer, cx| {
159 buffer.remove_active_selections(cx);
160 });
161 } else {
162 self.buffer.update(cx, |buffer, cx| {
163 if self.focused {
164 buffer.set_active_selections(
165 &self.selections.disjoint_anchors(),
166 self.selections.line_mode,
167 self.cursor_shape,
168 cx,
169 );
170 }
171 });
172 }
173 cx.notify();
174 }
175
176 fn to_state_proto(&self, cx: &AppContext) -> Option<proto::view::Variant> {
177 let buffer = self.buffer.read(cx);
178 let scroll_anchor = self.scroll_manager.anchor();
179 let excerpts = buffer
180 .read(cx)
181 .excerpts()
182 .map(|(id, buffer, range)| proto::Excerpt {
183 id: id.to_proto(),
184 buffer_id: buffer.remote_id(),
185 context_start: Some(serialize_text_anchor(&range.context.start)),
186 context_end: Some(serialize_text_anchor(&range.context.end)),
187 primary_start: range
188 .primary
189 .as_ref()
190 .map(|range| serialize_text_anchor(&range.start)),
191 primary_end: range
192 .primary
193 .as_ref()
194 .map(|range| serialize_text_anchor(&range.end)),
195 })
196 .collect();
197
198 Some(proto::view::Variant::Editor(proto::view::Editor {
199 singleton: buffer.is_singleton(),
200 title: (!buffer.is_singleton()).then(|| buffer.title(cx).into()),
201 excerpts,
202 scroll_top_anchor: Some(serialize_anchor(&scroll_anchor.anchor)),
203 scroll_x: scroll_anchor.offset.x,
204 scroll_y: scroll_anchor.offset.y,
205 selections: self
206 .selections
207 .disjoint_anchors()
208 .iter()
209 .map(serialize_selection)
210 .collect(),
211 pending_selection: self
212 .selections
213 .pending_anchor()
214 .as_ref()
215 .map(serialize_selection),
216 }))
217 }
218
219 fn add_event_to_update_proto(
220 &self,
221 event: &Self::Event,
222 update: &mut Option<proto::update_view::Variant>,
223 cx: &AppContext,
224 ) -> bool {
225 let update =
226 update.get_or_insert_with(|| proto::update_view::Variant::Editor(Default::default()));
227
228 match update {
229 proto::update_view::Variant::Editor(update) => match event {
230 Event::ExcerptsAdded {
231 buffer,
232 predecessor,
233 excerpts,
234 } => {
235 let buffer_id = buffer.read(cx).remote_id();
236 let mut excerpts = excerpts.iter();
237 if let Some((id, range)) = excerpts.next() {
238 update.inserted_excerpts.push(proto::ExcerptInsertion {
239 previous_excerpt_id: Some(predecessor.to_proto()),
240 excerpt: serialize_excerpt(buffer_id, id, range),
241 });
242 update.inserted_excerpts.extend(excerpts.map(|(id, range)| {
243 proto::ExcerptInsertion {
244 previous_excerpt_id: None,
245 excerpt: serialize_excerpt(buffer_id, id, range),
246 }
247 }))
248 }
249 true
250 }
251 Event::ExcerptsRemoved { ids } => {
252 update
253 .deleted_excerpts
254 .extend(ids.iter().map(ExcerptId::to_proto));
255 true
256 }
257 Event::ScrollPositionChanged { .. } => {
258 let scroll_anchor = self.scroll_manager.anchor();
259 update.scroll_top_anchor = Some(serialize_anchor(&scroll_anchor.anchor));
260 update.scroll_x = scroll_anchor.offset.x;
261 update.scroll_y = scroll_anchor.offset.y;
262 true
263 }
264 Event::SelectionsChanged { .. } => {
265 update.selections = self
266 .selections
267 .disjoint_anchors()
268 .iter()
269 .map(serialize_selection)
270 .collect();
271 update.pending_selection = self
272 .selections
273 .pending_anchor()
274 .as_ref()
275 .map(serialize_selection);
276 true
277 }
278 _ => false,
279 },
280 }
281 }
282
283 fn apply_update_proto(
284 &mut self,
285 project: &Model<Project>,
286 message: update_view::Variant,
287 cx: &mut ViewContext<Self>,
288 ) -> Task<Result<()>> {
289 let update_view::Variant::Editor(message) = message;
290 let project = project.clone();
291 cx.spawn(|this, mut cx| async move {
292 update_editor_from_message(this, project, message, &mut cx).await
293 })
294 }
295
296 fn should_unfollow_on_event(event: &Self::Event, _: &AppContext) -> bool {
297 match event {
298 Event::Edited => true,
299 Event::SelectionsChanged { local } => *local,
300 Event::ScrollPositionChanged { local, .. } => *local,
301 _ => false,
302 }
303 }
304
305 fn is_project_item(&self, _cx: &AppContext) -> bool {
306 true
307 }
308}
309
310async fn update_editor_from_message(
311 this: WeakView<Editor>,
312 project: Model<Project>,
313 message: proto::update_view::Editor,
314 cx: &mut AsyncAppContext,
315) -> Result<()> {
316 todo!()
317}
318// Previous implementation of the above
319// // Open all of the buffers of which excerpts were added to the editor.
320// let inserted_excerpt_buffer_ids = message
321// .inserted_excerpts
322// .iter()
323// .filter_map(|insertion| Some(insertion.excerpt.as_ref()?.buffer_id))
324// .collect::<HashSet<_>>();
325// let inserted_excerpt_buffers = project.update(cx, |project, cx| {
326// inserted_excerpt_buffer_ids
327// .into_iter()
328// .map(|id| project.open_buffer_by_id(id, cx))
329// .collect::<Vec<_>>()
330// })?;
331// let _inserted_excerpt_buffers = try_join_all(inserted_excerpt_buffers).await?;
332
333// // Update the editor's excerpts.
334// this.update(cx, |editor, cx| {
335// editor.buffer.update(cx, |multibuffer, cx| {
336// let mut removed_excerpt_ids = message
337// .deleted_excerpts
338// .into_iter()
339// .map(ExcerptId::from_proto)
340// .collect::<Vec<_>>();
341// removed_excerpt_ids.sort_by({
342// let multibuffer = multibuffer.read(cx);
343// move |a, b| a.cmp(&b, &multibuffer)
344// });
345
346// let mut insertions = message.inserted_excerpts.into_iter().peekable();
347// while let Some(insertion) = insertions.next() {
348// let Some(excerpt) = insertion.excerpt else {
349// continue;
350// };
351// let Some(previous_excerpt_id) = insertion.previous_excerpt_id else {
352// continue;
353// };
354// let buffer_id = excerpt.buffer_id;
355// let Some(buffer) = project.read(cx).buffer_for_id(buffer_id) else {
356// continue;
357// };
358
359// let adjacent_excerpts = iter::from_fn(|| {
360// let insertion = insertions.peek()?;
361// if insertion.previous_excerpt_id.is_none()
362// && insertion.excerpt.as_ref()?.buffer_id == buffer_id
363// {
364// insertions.next()?.excerpt
365// } else {
366// None
367// }
368// });
369
370// multibuffer.insert_excerpts_with_ids_after(
371// ExcerptId::from_proto(previous_excerpt_id),
372// buffer,
373// [excerpt]
374// .into_iter()
375// .chain(adjacent_excerpts)
376// .filter_map(|excerpt| {
377// Some((
378// ExcerptId::from_proto(excerpt.id),
379// deserialize_excerpt_range(excerpt)?,
380// ))
381// }),
382// cx,
383// );
384// }
385
386// multibuffer.remove_excerpts(removed_excerpt_ids, cx);
387// });
388// })?;
389
390// // Deserialize the editor state.
391// let (selections, pending_selection, scroll_top_anchor) = this.update(cx, |editor, cx| {
392// let buffer = editor.buffer.read(cx).read(cx);
393// let selections = message
394// .selections
395// .into_iter()
396// .filter_map(|selection| deserialize_selection(&buffer, selection))
397// .collect::<Vec<_>>();
398// let pending_selection = message
399// .pending_selection
400// .and_then(|selection| deserialize_selection(&buffer, selection));
401// let scroll_top_anchor = message
402// .scroll_top_anchor
403// .and_then(|anchor| deserialize_anchor(&buffer, anchor));
404// anyhow::Ok((selections, pending_selection, scroll_top_anchor))
405// })??;
406
407// // Wait until the buffer has received all of the operations referenced by
408// // the editor's new state.
409// this.update(cx, |editor, cx| {
410// editor.buffer.update(cx, |buffer, cx| {
411// buffer.wait_for_anchors(
412// selections
413// .iter()
414// .chain(pending_selection.as_ref())
415// .flat_map(|selection| [selection.start, selection.end])
416// .chain(scroll_top_anchor),
417// cx,
418// )
419// })
420// })?
421// .await?;
422
423// // Update the editor's state.
424// this.update(cx, |editor, cx| {
425// if !selections.is_empty() || pending_selection.is_some() {
426// editor.set_selections_from_remote(selections, pending_selection, cx);
427// editor.request_autoscroll_remotely(Autoscroll::newest(), cx);
428// } else if let Some(scroll_top_anchor) = scroll_top_anchor {
429// editor.set_scroll_anchor_remote(
430// ScrollAnchor {
431// anchor: scroll_top_anchor,
432// offset: point(message.scroll_x, message.scroll_y),
433// },
434// cx,
435// );
436// }
437// })?;
438// Ok(())
439// }
440
441fn serialize_excerpt(
442 buffer_id: u64,
443 id: &ExcerptId,
444 range: &ExcerptRange<language::Anchor>,
445) -> Option<proto::Excerpt> {
446 Some(proto::Excerpt {
447 id: id.to_proto(),
448 buffer_id,
449 context_start: Some(serialize_text_anchor(&range.context.start)),
450 context_end: Some(serialize_text_anchor(&range.context.end)),
451 primary_start: range
452 .primary
453 .as_ref()
454 .map(|r| serialize_text_anchor(&r.start)),
455 primary_end: range
456 .primary
457 .as_ref()
458 .map(|r| serialize_text_anchor(&r.end)),
459 })
460}
461
462fn serialize_selection(selection: &Selection<Anchor>) -> proto::Selection {
463 proto::Selection {
464 id: selection.id as u64,
465 start: Some(serialize_anchor(&selection.start)),
466 end: Some(serialize_anchor(&selection.end)),
467 reversed: selection.reversed,
468 }
469}
470
471fn serialize_anchor(anchor: &Anchor) -> proto::EditorAnchor {
472 proto::EditorAnchor {
473 excerpt_id: anchor.excerpt_id.to_proto(),
474 anchor: Some(serialize_text_anchor(&anchor.text_anchor)),
475 }
476}
477
478fn deserialize_excerpt_range(excerpt: proto::Excerpt) -> Option<ExcerptRange<language::Anchor>> {
479 let context = {
480 let start = language::proto::deserialize_anchor(excerpt.context_start?)?;
481 let end = language::proto::deserialize_anchor(excerpt.context_end?)?;
482 start..end
483 };
484 let primary = excerpt
485 .primary_start
486 .zip(excerpt.primary_end)
487 .and_then(|(start, end)| {
488 let start = language::proto::deserialize_anchor(start)?;
489 let end = language::proto::deserialize_anchor(end)?;
490 Some(start..end)
491 });
492 Some(ExcerptRange { context, primary })
493}
494
495fn deserialize_selection(
496 buffer: &MultiBufferSnapshot,
497 selection: proto::Selection,
498) -> Option<Selection<Anchor>> {
499 Some(Selection {
500 id: selection.id as usize,
501 start: deserialize_anchor(buffer, selection.start?)?,
502 end: deserialize_anchor(buffer, selection.end?)?,
503 reversed: selection.reversed,
504 goal: SelectionGoal::None,
505 })
506}
507
508fn deserialize_anchor(buffer: &MultiBufferSnapshot, anchor: proto::EditorAnchor) -> Option<Anchor> {
509 let excerpt_id = ExcerptId::from_proto(anchor.excerpt_id);
510 Some(Anchor {
511 excerpt_id,
512 text_anchor: language::proto::deserialize_anchor(anchor.anchor?)?,
513 buffer_id: buffer.buffer_id_for_excerpt(excerpt_id),
514 })
515}
516
517impl Item for Editor {
518 fn navigate(&mut self, data: Box<dyn std::any::Any>, cx: &mut ViewContext<Self>) -> bool {
519 todo!();
520 // if let Ok(data) = data.downcast::<NavigationData>() {
521 // let newest_selection = self.selections.newest::<Point>(cx);
522 // let buffer = self.buffer.read(cx).read(cx);
523 // let offset = if buffer.can_resolve(&data.cursor_anchor) {
524 // data.cursor_anchor.to_point(&buffer)
525 // } else {
526 // buffer.clip_point(data.cursor_position, Bias::Left)
527 // };
528
529 // let mut scroll_anchor = data.scroll_anchor;
530 // if !buffer.can_resolve(&scroll_anchor.anchor) {
531 // scroll_anchor.anchor = buffer.anchor_before(
532 // buffer.clip_point(Point::new(data.scroll_top_row, 0), Bias::Left),
533 // );
534 // }
535
536 // drop(buffer);
537
538 // if newest_selection.head() == offset {
539 // false
540 // } else {
541 // let nav_history = self.nav_history.take();
542 // self.set_scroll_anchor(scroll_anchor, cx);
543 // self.change_selections(Some(Autoscroll::fit()), cx, |s| {
544 // s.select_ranges([offset..offset])
545 // });
546 // self.nav_history = nav_history;
547 // true
548 // }
549 // } else {
550 // false
551 // }
552 }
553
554 fn tab_tooltip_text(&self, cx: &AppContext) -> Option<SharedString> {
555 let file_path = self
556 .buffer()
557 .read(cx)
558 .as_singleton()?
559 .read(cx)
560 .file()
561 .and_then(|f| f.as_local())?
562 .abs_path(cx);
563
564 let file_path = file_path.compact().to_string_lossy().to_string();
565
566 Some(file_path.into())
567 }
568
569 fn tab_description<'a>(&self, detail: usize, cx: &'a AppContext) -> Option<SharedString> {
570 let path = path_for_buffer(&self.buffer, detail, true, cx)?;
571 Some(path.to_string_lossy().to_string().into())
572 }
573
574 fn tab_content<T: 'static>(&self, detail: Option<usize>, cx: &AppContext) -> AnyElement<T> {
575 todo!();
576
577 // Flex::row()
578 // .with_child(Label::new(self.title(cx).to_string(), style.label.clone()).into_any())
579 // .with_children(detail.and_then(|detail| {
580 // let path = path_for_buffer(&self.buffer, detail, false, cx)?;
581 // let description = path.to_string_lossy();
582 // Some(
583 // Label::new(
584 // util::truncate_and_trailoff(&description, MAX_TAB_TITLE_LEN),
585 // style.description.text.clone(),
586 // )
587 // .contained()
588 // .with_style(style.description.container)
589 // .aligned(),
590 // )
591 // }))
592 // .align_children_center()
593 // .into_any()
594 }
595
596 fn for_each_project_item(
597 &self,
598 cx: &AppContext,
599 f: &mut dyn FnMut(EntityId, &dyn project::Item),
600 ) {
601 self.buffer
602 .read(cx)
603 .for_each_buffer(|buffer| f(buffer.entity_id(), buffer.read(cx)));
604 }
605
606 fn is_singleton(&self, cx: &AppContext) -> bool {
607 self.buffer.read(cx).is_singleton()
608 }
609
610 fn clone_on_split(
611 &self,
612 _workspace_id: WorkspaceId,
613 cx: &mut ViewContext<Self>,
614 ) -> Option<View<Editor>>
615 where
616 Self: Sized,
617 {
618 Some(cx.build_view(|cx| self.clone(cx)))
619 }
620
621 fn set_nav_history(&mut self, history: ItemNavHistory, _: &mut ViewContext<Self>) {
622 self.nav_history = Some(history);
623 }
624
625 fn deactivated(&mut self, cx: &mut ViewContext<Self>) {
626 let selection = self.selections.newest_anchor();
627 todo!()
628 // self.push_to_nav_history(selection.head(), None, cx);
629 }
630
631 fn workspace_deactivated(&mut self, cx: &mut ViewContext<Self>) {
632 hide_link_definition(self, cx);
633 self.link_go_to_definition_state.last_trigger_point = None;
634 }
635
636 fn is_dirty(&self, cx: &AppContext) -> bool {
637 self.buffer().read(cx).read(cx).is_dirty()
638 }
639
640 fn has_conflict(&self, cx: &AppContext) -> bool {
641 self.buffer().read(cx).read(cx).has_conflict()
642 }
643
644 fn can_save(&self, cx: &AppContext) -> bool {
645 let buffer = &self.buffer().read(cx);
646 if let Some(buffer) = buffer.as_singleton() {
647 buffer.read(cx).project_path(cx).is_some()
648 } else {
649 true
650 }
651 }
652
653 fn save(&mut self, project: Model<Project>, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
654 self.report_editor_event("save", None, cx);
655 let format = self.perform_format(project.clone(), FormatTrigger::Save, cx);
656 let buffers = self.buffer().clone().read(cx).all_buffers();
657 cx.spawn(|_, mut cx| async move {
658 format.await?;
659
660 if buffers.len() == 1 {
661 project
662 .update(&mut cx, |project, cx| project.save_buffers(buffers, cx))?
663 .await?;
664 } else {
665 // For multi-buffers, only save those ones that contain changes. For clean buffers
666 // we simulate saving by calling `Buffer::did_save`, so that language servers or
667 // other downstream listeners of save events get notified.
668 let (dirty_buffers, clean_buffers) = buffers.into_iter().partition(|buffer| {
669 buffer
670 .update(&mut cx, |buffer, _| {
671 buffer.is_dirty() || buffer.has_conflict()
672 })
673 .unwrap_or(false)
674 });
675
676 project
677 .update(&mut cx, |project, cx| {
678 project.save_buffers(dirty_buffers, cx)
679 })?
680 .await?;
681 for buffer in clean_buffers {
682 buffer.update(&mut cx, |buffer, cx| {
683 let version = buffer.saved_version().clone();
684 let fingerprint = buffer.saved_version_fingerprint();
685 let mtime = buffer.saved_mtime();
686 buffer.did_save(version, fingerprint, mtime, cx);
687 });
688 }
689 }
690
691 Ok(())
692 })
693 }
694
695 fn save_as(
696 &mut self,
697 project: Model<Project>,
698 abs_path: PathBuf,
699 cx: &mut ViewContext<Self>,
700 ) -> Task<Result<()>> {
701 let buffer = self
702 .buffer()
703 .read(cx)
704 .as_singleton()
705 .expect("cannot call save_as on an excerpt list");
706
707 let file_extension = abs_path
708 .extension()
709 .map(|a| a.to_string_lossy().to_string());
710 self.report_editor_event("save", file_extension, cx);
711
712 project.update(cx, |project, cx| {
713 project.save_buffer_as(buffer, abs_path, cx)
714 })
715 }
716
717 fn reload(&mut self, project: Model<Project>, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
718 let buffer = self.buffer().clone();
719 let buffers = self.buffer.read(cx).all_buffers();
720 let reload_buffers =
721 project.update(cx, |project, cx| project.reload_buffers(buffers, true, cx));
722 cx.spawn(|this, mut cx| async move {
723 let transaction = reload_buffers.log_err().await;
724 this.update(&mut cx, |editor, cx| {
725 editor.request_autoscroll(Autoscroll::fit(), cx)
726 })?;
727 buffer.update(&mut cx, |buffer, cx| {
728 if let Some(transaction) = transaction {
729 if !buffer.is_singleton() {
730 buffer.push_transaction(&transaction.0, cx);
731 }
732 }
733 });
734 Ok(())
735 })
736 }
737
738 fn to_item_events(event: &Self::Event) -> SmallVec<[ItemEvent; 2]> {
739 let mut result = SmallVec::new();
740 match event {
741 Event::Closed => result.push(ItemEvent::CloseItem),
742 Event::Saved | Event::TitleChanged => {
743 result.push(ItemEvent::UpdateTab);
744 result.push(ItemEvent::UpdateBreadcrumbs);
745 }
746 Event::Reparsed => {
747 result.push(ItemEvent::UpdateBreadcrumbs);
748 }
749 Event::SelectionsChanged { local } if *local => {
750 result.push(ItemEvent::UpdateBreadcrumbs);
751 }
752 Event::DirtyChanged => {
753 result.push(ItemEvent::UpdateTab);
754 }
755 Event::BufferEdited => {
756 result.push(ItemEvent::Edit);
757 result.push(ItemEvent::UpdateBreadcrumbs);
758 }
759 _ => {}
760 }
761 result
762 }
763
764 fn as_searchable(&self, handle: &View<Self>) -> Option<Box<dyn SearchableItemHandle>> {
765 Some(Box::new(handle.clone()))
766 }
767
768 fn pixel_position_of_cursor(&self, _: &AppContext) -> Option<gpui::Point<Pixels>> {
769 self.pixel_position_of_newest_cursor
770 }
771
772 fn breadcrumb_location(&self) -> ToolbarItemLocation {
773 ToolbarItemLocation::PrimaryLeft { flex: None }
774 }
775
776 fn breadcrumbs(&self, variant: &ThemeVariant, cx: &AppContext) -> Option<Vec<BreadcrumbText>> {
777 todo!();
778 // let cursor = self.selections.newest_anchor().head();
779 // let multibuffer = &self.buffer().read(cx);
780 // let (buffer_id, symbols) =
781 // multibuffer.symbols_containing(cursor, Some(&theme.editor.syntax), cx)?;
782 // let buffer = multibuffer.buffer(buffer_id)?;
783
784 // let buffer = buffer.read(cx);
785 // let filename = buffer
786 // .snapshot()
787 // .resolve_file_path(
788 // cx,
789 // self.project
790 // .as_ref()
791 // .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
792 // .unwrap_or_default(),
793 // )
794 // .map(|path| path.to_string_lossy().to_string())
795 // .unwrap_or_else(|| "untitled".to_string());
796
797 // let mut breadcrumbs = vec![BreadcrumbText {
798 // text: filename,
799 // highlights: None,
800 // }];
801 // breadcrumbs.extend(symbols.into_iter().map(|symbol| BreadcrumbText {
802 // text: symbol.text,
803 // highlights: Some(symbol.highlight_ranges),
804 // }));
805 // Some(breadcrumbs)
806 }
807
808 fn added_to_workspace(&mut self, workspace: &mut Workspace, cx: &mut ViewContext<Self>) {
809 let workspace_id = workspace.database_id();
810 let item_id = cx.view().entity_id().as_u64() as ItemId;
811 self.workspace = Some((workspace.weak_handle(), workspace.database_id()));
812
813 fn serialize(
814 buffer: Model<Buffer>,
815 workspace_id: WorkspaceId,
816 item_id: ItemId,
817 cx: &mut AppContext,
818 ) {
819 if let Some(file) = buffer.read(cx).file().and_then(|file| file.as_local()) {
820 let path = file.abs_path(cx);
821
822 cx.background_executor()
823 .spawn(async move {
824 DB.save_path(item_id, workspace_id, path.clone())
825 .await
826 .log_err()
827 })
828 .detach();
829 }
830 }
831
832 if let Some(buffer) = self.buffer().read(cx).as_singleton() {
833 serialize(buffer.clone(), workspace_id, item_id, cx);
834
835 cx.subscribe(&buffer, |this, buffer, event, cx| {
836 if let Some((_, workspace_id)) = this.workspace.as_ref() {
837 if let language::Event::FileHandleChanged = event {
838 serialize(
839 buffer,
840 *workspace_id,
841 cx.view().entity_id().as_u64() as ItemId,
842 cx,
843 );
844 }
845 }
846 })
847 .detach();
848 }
849 }
850
851 fn serialized_item_kind() -> Option<&'static str> {
852 Some("Editor")
853 }
854
855 fn deserialize(
856 project: Model<Project>,
857 _workspace: WeakView<Workspace>,
858 workspace_id: workspace::WorkspaceId,
859 item_id: ItemId,
860 cx: &mut ViewContext<Pane>,
861 ) -> Task<Result<View<Self>>> {
862 let project_item: Result<_> = project.update(cx, |project, cx| {
863 // Look up the path with this key associated, create a self with that path
864 let path = DB
865 .get_path(item_id, workspace_id)?
866 .context("No path stored for this editor")?;
867
868 let (worktree, path) = project
869 .find_local_worktree(&path, cx)
870 .with_context(|| format!("No worktree for path: {path:?}"))?;
871 let project_path = ProjectPath {
872 worktree_id: worktree.read(cx).id(),
873 path: path.into(),
874 };
875
876 Ok(project.open_path(project_path, cx))
877 });
878
879 project_item
880 .map(|project_item| {
881 cx.spawn(|pane, mut cx| async move {
882 let (_, project_item) = project_item.await?;
883 let buffer = project_item
884 .downcast::<Buffer>()
885 .map_err(|_| anyhow!("Project item at stored path was not a buffer"))?;
886 Ok(pane.update(&mut cx, |_, cx| {
887 cx.build_view(|cx| {
888 let mut editor = Editor::for_buffer(buffer, Some(project), cx);
889
890 editor.read_scroll_position_from_db(item_id, workspace_id, cx);
891 editor
892 })
893 })?)
894 })
895 })
896 .unwrap_or_else(|error| Task::ready(Err(error)))
897 }
898}
899
900impl ProjectItem for Editor {
901 type Item = Buffer;
902
903 fn for_project_item(
904 project: Model<Project>,
905 buffer: Model<Buffer>,
906 cx: &mut ViewContext<Self>,
907 ) -> Self {
908 Self::for_buffer(buffer, Some(project), cx)
909 }
910}
911
912pub(crate) enum BufferSearchHighlights {}
913impl SearchableItem for Editor {
914 type Match = Range<Anchor>;
915
916 fn to_search_event(
917 &mut self,
918 event: &Self::Event,
919 _: &mut ViewContext<Self>,
920 ) -> Option<SearchEvent> {
921 match event {
922 Event::BufferEdited => Some(SearchEvent::MatchesInvalidated),
923 Event::SelectionsChanged { .. } => {
924 if self.selections.disjoint_anchors().len() == 1 {
925 Some(SearchEvent::ActiveMatchChanged)
926 } else {
927 None
928 }
929 }
930 _ => None,
931 }
932 }
933
934 fn clear_matches(&mut self, cx: &mut ViewContext<Self>) {
935 todo!()
936 // self.clear_background_highlights::<BufferSearchHighlights>(cx);
937 }
938
939 fn update_matches(&mut self, matches: Vec<Range<Anchor>>, cx: &mut ViewContext<Self>) {
940 todo!()
941 // self.highlight_background::<BufferSearchHighlights>(
942 // matches,
943 // |theme| theme.search.match_background,
944 // cx,
945 // );
946 }
947
948 fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> String {
949 let display_map = self.snapshot(cx).display_snapshot;
950 let selection = self.selections.newest::<usize>(cx);
951 if selection.start == selection.end {
952 let point = selection.start.to_display_point(&display_map);
953 let range = surrounding_word(&display_map, point);
954 let range = range.start.to_offset(&display_map, Bias::Left)
955 ..range.end.to_offset(&display_map, Bias::Right);
956 let text: String = display_map.buffer_snapshot.text_for_range(range).collect();
957 if text.trim().is_empty() {
958 String::new()
959 } else {
960 text
961 }
962 } else {
963 display_map
964 .buffer_snapshot
965 .text_for_range(selection.start..selection.end)
966 .collect()
967 }
968 }
969
970 fn activate_match(
971 &mut self,
972 index: usize,
973 matches: Vec<Range<Anchor>>,
974 cx: &mut ViewContext<Self>,
975 ) {
976 todo!()
977 // self.unfold_ranges([matches[index].clone()], false, true, cx);
978 // let range = self.range_for_match(&matches[index]);
979 // self.change_selections(Some(Autoscroll::fit()), cx, |s| {
980 // s.select_ranges([range]);
981 // })
982 }
983
984 fn select_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>) {
985 todo!()
986 // self.unfold_ranges(matches.clone(), false, false, cx);
987 // let mut ranges = Vec::new();
988 // for m in &matches {
989 // ranges.push(self.range_for_match(&m))
990 // }
991 // self.change_selections(None, cx, |s| s.select_ranges(ranges));
992 }
993 fn replace(
994 &mut self,
995 identifier: &Self::Match,
996 query: &SearchQuery,
997 cx: &mut ViewContext<Self>,
998 ) {
999 let text = self.buffer.read(cx);
1000 let text = text.snapshot(cx);
1001 let text = text.text_for_range(identifier.clone()).collect::<Vec<_>>();
1002 let text: Cow<_> = if text.len() == 1 {
1003 text.first().cloned().unwrap().into()
1004 } else {
1005 let joined_chunks = text.join("");
1006 joined_chunks.into()
1007 };
1008
1009 if let Some(replacement) = query.replacement_for(&text) {
1010 self.transact(cx, |this, cx| {
1011 this.edit([(identifier.clone(), Arc::from(&*replacement))], cx);
1012 });
1013 }
1014 }
1015 fn match_index_for_direction(
1016 &mut self,
1017 matches: &Vec<Range<Anchor>>,
1018 current_index: usize,
1019 direction: Direction,
1020 count: usize,
1021 cx: &mut ViewContext<Self>,
1022 ) -> usize {
1023 let buffer = self.buffer().read(cx).snapshot(cx);
1024 let current_index_position = if self.selections.disjoint_anchors().len() == 1 {
1025 self.selections.newest_anchor().head()
1026 } else {
1027 matches[current_index].start
1028 };
1029
1030 let mut count = count % matches.len();
1031 if count == 0 {
1032 return current_index;
1033 }
1034 match direction {
1035 Direction::Next => {
1036 if matches[current_index]
1037 .start
1038 .cmp(¤t_index_position, &buffer)
1039 .is_gt()
1040 {
1041 count = count - 1
1042 }
1043
1044 (current_index + count) % matches.len()
1045 }
1046 Direction::Prev => {
1047 if matches[current_index]
1048 .end
1049 .cmp(¤t_index_position, &buffer)
1050 .is_lt()
1051 {
1052 count = count - 1;
1053 }
1054
1055 if current_index >= count {
1056 current_index - count
1057 } else {
1058 matches.len() - (count - current_index)
1059 }
1060 }
1061 }
1062 }
1063
1064 fn find_matches(
1065 &mut self,
1066 query: Arc<project::search::SearchQuery>,
1067 cx: &mut ViewContext<Self>,
1068 ) -> Task<Vec<Range<Anchor>>> {
1069 let buffer = self.buffer().read(cx).snapshot(cx);
1070 cx.background_executor().spawn(async move {
1071 let mut ranges = Vec::new();
1072 if let Some((_, _, excerpt_buffer)) = buffer.as_singleton() {
1073 ranges.extend(
1074 query
1075 .search(excerpt_buffer, None)
1076 .await
1077 .into_iter()
1078 .map(|range| {
1079 buffer.anchor_after(range.start)..buffer.anchor_before(range.end)
1080 }),
1081 );
1082 } else {
1083 for excerpt in buffer.excerpt_boundaries_in_range(0..buffer.len()) {
1084 let excerpt_range = excerpt.range.context.to_offset(&excerpt.buffer);
1085 ranges.extend(
1086 query
1087 .search(&excerpt.buffer, Some(excerpt_range.clone()))
1088 .await
1089 .into_iter()
1090 .map(|range| {
1091 let start = excerpt
1092 .buffer
1093 .anchor_after(excerpt_range.start + range.start);
1094 let end = excerpt
1095 .buffer
1096 .anchor_before(excerpt_range.start + range.end);
1097 buffer.anchor_in_excerpt(excerpt.id.clone(), start)
1098 ..buffer.anchor_in_excerpt(excerpt.id.clone(), end)
1099 }),
1100 );
1101 }
1102 }
1103 ranges
1104 })
1105 }
1106
1107 fn active_match_index(
1108 &mut self,
1109 matches: Vec<Range<Anchor>>,
1110 cx: &mut ViewContext<Self>,
1111 ) -> Option<usize> {
1112 active_match_index(
1113 &matches,
1114 &self.selections.newest_anchor().head(),
1115 &self.buffer().read(cx).snapshot(cx),
1116 )
1117 }
1118}
1119
1120pub fn active_match_index(
1121 ranges: &[Range<Anchor>],
1122 cursor: &Anchor,
1123 buffer: &MultiBufferSnapshot,
1124) -> Option<usize> {
1125 if ranges.is_empty() {
1126 None
1127 } else {
1128 match ranges.binary_search_by(|probe| {
1129 if probe.end.cmp(cursor, &*buffer).is_lt() {
1130 Ordering::Less
1131 } else if probe.start.cmp(cursor, &*buffer).is_gt() {
1132 Ordering::Greater
1133 } else {
1134 Ordering::Equal
1135 }
1136 }) {
1137 Ok(i) | Err(i) => Some(cmp::min(i, ranges.len() - 1)),
1138 }
1139 }
1140}
1141
1142pub struct CursorPosition {
1143 position: Option<Point>,
1144 selected_count: usize,
1145 _observe_active_editor: Option<Subscription>,
1146}
1147
1148// impl Default for CursorPosition {
1149// fn default() -> Self {
1150// Self::new()
1151// }
1152// }
1153
1154// impl CursorPosition {
1155// pub fn new() -> Self {
1156// Self {
1157// position: None,
1158// selected_count: 0,
1159// _observe_active_editor: None,
1160// }
1161// }
1162
1163// fn update_position(&mut self, editor: View<Editor>, cx: &mut ViewContext<Self>) {
1164// let editor = editor.read(cx);
1165// let buffer = editor.buffer().read(cx).snapshot(cx);
1166
1167// self.selected_count = 0;
1168// let mut last_selection: Option<Selection<usize>> = None;
1169// for selection in editor.selections.all::<usize>(cx) {
1170// self.selected_count += selection.end - selection.start;
1171// if last_selection
1172// .as_ref()
1173// .map_or(true, |last_selection| selection.id > last_selection.id)
1174// {
1175// last_selection = Some(selection);
1176// }
1177// }
1178// self.position = last_selection.map(|s| s.head().to_point(&buffer));
1179
1180// cx.notify();
1181// }
1182// }
1183
1184// impl Entity for CursorPosition {
1185// type Event = ();
1186// }
1187
1188// impl View for CursorPosition {
1189// fn ui_name() -> &'static str {
1190// "CursorPosition"
1191// }
1192
1193// fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
1194// if let Some(position) = self.position {
1195// let theme = &theme::current(cx).workspace.status_bar;
1196// let mut text = format!(
1197// "{}{FILE_ROW_COLUMN_DELIMITER}{}",
1198// position.row + 1,
1199// position.column + 1
1200// );
1201// if self.selected_count > 0 {
1202// write!(text, " ({} selected)", self.selected_count).unwrap();
1203// }
1204// Label::new(text, theme.cursor_position.clone()).into_any()
1205// } else {
1206// Empty::new().into_any()
1207// }
1208// }
1209// }
1210
1211// impl StatusItemView for CursorPosition {
1212// fn set_active_pane_item(
1213// &mut self,
1214// active_pane_item: Option<&dyn ItemHandle>,
1215// cx: &mut ViewContext<Self>,
1216// ) {
1217// if let Some(editor) = active_pane_item.and_then(|item| item.act_as::<Editor>(cx)) {
1218// self._observe_active_editor = Some(cx.observe(&editor, Self::update_position));
1219// self.update_position(editor, cx);
1220// } else {
1221// self.position = None;
1222// self._observe_active_editor = None;
1223// }
1224
1225// cx.notify();
1226// }
1227// }
1228
1229fn path_for_buffer<'a>(
1230 buffer: &Model<MultiBuffer>,
1231 height: usize,
1232 include_filename: bool,
1233 cx: &'a AppContext,
1234) -> Option<Cow<'a, Path>> {
1235 let file = buffer.read(cx).as_singleton()?.read(cx).file()?;
1236 path_for_file(file.as_ref(), height, include_filename, cx)
1237}
1238
1239fn path_for_file<'a>(
1240 file: &'a dyn language::File,
1241 mut height: usize,
1242 include_filename: bool,
1243 cx: &'a AppContext,
1244) -> Option<Cow<'a, Path>> {
1245 // Ensure we always render at least the filename.
1246 height += 1;
1247
1248 let mut prefix = file.path().as_ref();
1249 while height > 0 {
1250 if let Some(parent) = prefix.parent() {
1251 prefix = parent;
1252 height -= 1;
1253 } else {
1254 break;
1255 }
1256 }
1257
1258 // Here we could have just always used `full_path`, but that is very
1259 // allocation-heavy and so we try to use a `Cow<Path>` if we haven't
1260 // traversed all the way up to the worktree's root.
1261 if height > 0 {
1262 let full_path = file.full_path(cx);
1263 if include_filename {
1264 Some(full_path.into())
1265 } else {
1266 Some(full_path.parent()?.to_path_buf().into())
1267 }
1268 } else {
1269 let mut path = file.path().strip_prefix(prefix).ok()?;
1270 if !include_filename {
1271 path = path.parent()?;
1272 }
1273 Some(path.into())
1274 }
1275}
1276
1277#[cfg(test)]
1278mod tests {
1279 use super::*;
1280 use gpui::AppContext;
1281 use std::{
1282 path::{Path, PathBuf},
1283 sync::Arc,
1284 time::SystemTime,
1285 };
1286
1287 #[gpui::test]
1288 fn test_path_for_file(cx: &mut AppContext) {
1289 let file = TestFile {
1290 path: Path::new("").into(),
1291 full_path: PathBuf::from(""),
1292 };
1293 assert_eq!(path_for_file(&file, 0, false, cx), None);
1294 }
1295
1296 struct TestFile {
1297 path: Arc<Path>,
1298 full_path: PathBuf,
1299 }
1300
1301 impl language::File for TestFile {
1302 fn path(&self) -> &Arc<Path> {
1303 &self.path
1304 }
1305
1306 fn full_path(&self, _: &gpui::AppContext) -> PathBuf {
1307 self.full_path.clone()
1308 }
1309
1310 fn as_local(&self) -> Option<&dyn language::LocalFile> {
1311 unimplemented!()
1312 }
1313
1314 fn mtime(&self) -> SystemTime {
1315 unimplemented!()
1316 }
1317
1318 fn file_name<'a>(&'a self, _: &'a gpui::AppContext) -> &'a std::ffi::OsStr {
1319 unimplemented!()
1320 }
1321
1322 fn worktree_id(&self) -> usize {
1323 0
1324 }
1325
1326 fn is_deleted(&self) -> bool {
1327 unimplemented!()
1328 }
1329
1330 fn as_any(&self) -> &dyn std::any::Any {
1331 unimplemented!()
1332 }
1333
1334 fn to_proto(&self) -> rpc::proto::File {
1335 unimplemented!()
1336 }
1337 }
1338}