1use crate::{
2 editor_settings::SeedQuerySetting, persistence::DB, scroll::ScrollAnchor, Anchor, Autoscroll,
3 Editor, EditorEvent, EditorSettings, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot,
4 NavigationData, ToPoint as _,
5};
6use anyhow::{anyhow, Context as _, Result};
7use collections::HashSet;
8use futures::future::try_join_all;
9use gpui::{
10 point, AnyElement, AppContext, AsyncWindowContext, Context, Entity, EntityId, EventEmitter,
11 IntoElement, Model, ParentElement, Pixels, SharedString, Styled, Task, View, ViewContext,
12 VisualContext, WeakView, WindowContext,
13};
14use language::{
15 proto::serialize_anchor as serialize_text_anchor, Bias, Buffer, CharKind, OffsetRangeExt,
16 Point, SelectionGoal,
17};
18use project::repository::GitFileStatus;
19use project::{search::SearchQuery, FormatTrigger, Item as _, Project, ProjectPath};
20use rpc::proto::{self, update_view, PeerId};
21use settings::Settings;
22use workspace::item::ItemSettings;
23
24use std::{
25 borrow::Cow,
26 cmp::{self, Ordering},
27 iter,
28 ops::Range,
29 path::{Path, PathBuf},
30 sync::Arc,
31};
32use text::{BufferId, Selection};
33use theme::Theme;
34use ui::{h_flex, prelude::*, Label};
35use util::{paths::PathExt, ResultExt, TryFutureExt};
36use workspace::item::{BreadcrumbText, FollowEvent, FollowableItemHandle};
37use workspace::{
38 item::{FollowableItem, Item, ItemEvent, ItemHandle, ProjectItem},
39 searchable::{Direction, SearchEvent, SearchableItem, SearchableItemHandle},
40 ItemId, ItemNavHistory, Pane, ToolbarItemLocation, ViewId, Workspace, WorkspaceId,
41};
42
43pub const MAX_TAB_TITLE_LEN: usize = 24;
44
45impl FollowableItem for Editor {
46 fn remote_id(&self) -> Option<ViewId> {
47 self.remote_id
48 }
49
50 fn from_state_proto(
51 pane: View<workspace::Pane>,
52 workspace: View<Workspace>,
53 remote_id: ViewId,
54 state: &mut Option<proto::view::Variant>,
55 cx: &mut WindowContext,
56 ) -> Option<Task<Result<View<Self>>>> {
57 let project = workspace.read(cx).project().to_owned();
58 let Some(proto::view::Variant::Editor(_)) = state else {
59 return None;
60 };
61 let Some(proto::view::Variant::Editor(state)) = state.take() else {
62 unreachable!()
63 };
64
65 let client = project.read(cx).client();
66 let replica_id = project.read(cx).replica_id();
67 let buffer_ids = state
68 .excerpts
69 .iter()
70 .map(|excerpt| excerpt.buffer_id)
71 .collect::<HashSet<_>>();
72 let buffers = project.update(cx, |project, cx| {
73 buffer_ids
74 .iter()
75 .map(|id| BufferId::new(*id).map(|id| project.open_buffer_by_id(id, cx)))
76 .collect::<Result<Vec<_>>>()
77 });
78
79 let pane = pane.downgrade();
80 Some(cx.spawn(|mut cx| async move {
81 let mut buffers = futures::future::try_join_all(buffers?)
82 .await
83 .debug_assert_ok("leaders don't share views for unshared buffers")?;
84 let editor = pane.update(&mut cx, |pane, cx| {
85 let mut editors = pane.items_of_type::<Self>();
86 editors.find(|editor| {
87 let ids_match = editor.remote_id(&client, cx) == Some(remote_id);
88 let singleton_buffer_matches = state.singleton
89 && buffers.first()
90 == editor.read(cx).buffer.read(cx).as_singleton().as_ref();
91 ids_match || singleton_buffer_matches
92 })
93 })?;
94
95 let editor = if let Some(editor) = editor {
96 editor
97 } else {
98 pane.update(&mut cx, |_, cx| {
99 let multibuffer = cx.new_model(|cx| {
100 let mut multibuffer;
101 if state.singleton && buffers.len() == 1 {
102 multibuffer = MultiBuffer::singleton(buffers.pop().unwrap(), cx)
103 } else {
104 multibuffer =
105 MultiBuffer::new(replica_id, project.read(cx).capability());
106 let mut excerpts = state.excerpts.into_iter().peekable();
107 while let Some(excerpt) = excerpts.peek() {
108 let Ok(buffer_id) = BufferId::new(excerpt.buffer_id) else {
109 continue;
110 };
111 let buffer_excerpts = iter::from_fn(|| {
112 let excerpt = excerpts.peek()?;
113 (excerpt.buffer_id == u64::from(buffer_id))
114 .then(|| excerpts.next().unwrap())
115 });
116 let buffer =
117 buffers.iter().find(|b| b.read(cx).remote_id() == buffer_id);
118 if let Some(buffer) = buffer {
119 multibuffer.push_excerpts(
120 buffer.clone(),
121 buffer_excerpts.filter_map(deserialize_excerpt_range),
122 cx,
123 );
124 }
125 }
126 };
127
128 if let Some(title) = &state.title {
129 multibuffer = multibuffer.with_title(title.clone())
130 }
131
132 multibuffer
133 });
134
135 cx.new_view(|cx| {
136 let mut editor =
137 Editor::for_multibuffer(multibuffer, Some(project.clone()), cx);
138 editor.remote_id = Some(remote_id);
139 editor
140 })
141 })?
142 };
143
144 update_editor_from_message(
145 editor.downgrade(),
146 project,
147 proto::update_view::Editor {
148 selections: state.selections,
149 pending_selection: state.pending_selection,
150 scroll_top_anchor: state.scroll_top_anchor,
151 scroll_x: state.scroll_x,
152 scroll_y: state.scroll_y,
153 ..Default::default()
154 },
155 &mut cx,
156 )
157 .await?;
158
159 Ok(editor)
160 }))
161 }
162
163 fn set_leader_peer_id(&mut self, leader_peer_id: Option<PeerId>, cx: &mut ViewContext<Self>) {
164 self.leader_peer_id = leader_peer_id;
165 if self.leader_peer_id.is_some() {
166 self.buffer.update(cx, |buffer, cx| {
167 buffer.remove_active_selections(cx);
168 });
169 } else if self.focus_handle.is_focused(cx) {
170 self.buffer.update(cx, |buffer, cx| {
171 buffer.set_active_selections(
172 &self.selections.disjoint_anchors(),
173 self.selections.line_mode,
174 self.cursor_shape,
175 cx,
176 );
177 });
178 }
179 cx.notify();
180 }
181
182 fn to_state_proto(&self, cx: &WindowContext) -> Option<proto::view::Variant> {
183 let buffer = self.buffer.read(cx);
184 if buffer
185 .as_singleton()
186 .and_then(|buffer| buffer.read(cx).file())
187 .map_or(false, |file| file.is_private())
188 {
189 return None;
190 }
191
192 let scroll_anchor = self.scroll_manager.anchor();
193 let excerpts = buffer
194 .read(cx)
195 .excerpts()
196 .map(|(id, buffer, range)| proto::Excerpt {
197 id: id.to_proto(),
198 buffer_id: buffer.remote_id().into(),
199 context_start: Some(serialize_text_anchor(&range.context.start)),
200 context_end: Some(serialize_text_anchor(&range.context.end)),
201 primary_start: range
202 .primary
203 .as_ref()
204 .map(|range| serialize_text_anchor(&range.start)),
205 primary_end: range
206 .primary
207 .as_ref()
208 .map(|range| serialize_text_anchor(&range.end)),
209 })
210 .collect();
211
212 Some(proto::view::Variant::Editor(proto::view::Editor {
213 singleton: buffer.is_singleton(),
214 title: (!buffer.is_singleton()).then(|| buffer.title(cx).into()),
215 excerpts,
216 scroll_top_anchor: Some(serialize_anchor(&scroll_anchor.anchor)),
217 scroll_x: scroll_anchor.offset.x,
218 scroll_y: scroll_anchor.offset.y,
219 selections: self
220 .selections
221 .disjoint_anchors()
222 .iter()
223 .map(serialize_selection)
224 .collect(),
225 pending_selection: self
226 .selections
227 .pending_anchor()
228 .as_ref()
229 .map(serialize_selection),
230 }))
231 }
232
233 fn to_follow_event(event: &EditorEvent) -> Option<workspace::item::FollowEvent> {
234 match event {
235 EditorEvent::Edited => Some(FollowEvent::Unfollow),
236 EditorEvent::SelectionsChanged { local }
237 | EditorEvent::ScrollPositionChanged { local, .. } => {
238 if *local {
239 Some(FollowEvent::Unfollow)
240 } else {
241 None
242 }
243 }
244 _ => None,
245 }
246 }
247
248 fn add_event_to_update_proto(
249 &self,
250 event: &EditorEvent,
251 update: &mut Option<proto::update_view::Variant>,
252 cx: &WindowContext,
253 ) -> bool {
254 let update =
255 update.get_or_insert_with(|| proto::update_view::Variant::Editor(Default::default()));
256
257 match update {
258 proto::update_view::Variant::Editor(update) => match event {
259 EditorEvent::ExcerptsAdded {
260 buffer,
261 predecessor,
262 excerpts,
263 } => {
264 let buffer_id = buffer.read(cx).remote_id();
265 let mut excerpts = excerpts.iter();
266 if let Some((id, range)) = excerpts.next() {
267 update.inserted_excerpts.push(proto::ExcerptInsertion {
268 previous_excerpt_id: Some(predecessor.to_proto()),
269 excerpt: serialize_excerpt(buffer_id, id, range),
270 });
271 update.inserted_excerpts.extend(excerpts.map(|(id, range)| {
272 proto::ExcerptInsertion {
273 previous_excerpt_id: None,
274 excerpt: serialize_excerpt(buffer_id, id, range),
275 }
276 }))
277 }
278 true
279 }
280 EditorEvent::ExcerptsRemoved { ids } => {
281 update
282 .deleted_excerpts
283 .extend(ids.iter().map(ExcerptId::to_proto));
284 true
285 }
286 EditorEvent::ScrollPositionChanged { autoscroll, .. } if !autoscroll => {
287 let scroll_anchor = self.scroll_manager.anchor();
288 update.scroll_top_anchor = Some(serialize_anchor(&scroll_anchor.anchor));
289 update.scroll_x = scroll_anchor.offset.x;
290 update.scroll_y = scroll_anchor.offset.y;
291 true
292 }
293 EditorEvent::SelectionsChanged { .. } => {
294 update.selections = self
295 .selections
296 .disjoint_anchors()
297 .iter()
298 .map(serialize_selection)
299 .collect();
300 update.pending_selection = self
301 .selections
302 .pending_anchor()
303 .as_ref()
304 .map(serialize_selection);
305 true
306 }
307 _ => false,
308 },
309 }
310 }
311
312 fn apply_update_proto(
313 &mut self,
314 project: &Model<Project>,
315 message: update_view::Variant,
316 cx: &mut ViewContext<Self>,
317 ) -> Task<Result<()>> {
318 let update_view::Variant::Editor(message) = message;
319 let project = project.clone();
320 cx.spawn(|this, mut cx| async move {
321 update_editor_from_message(this, project, message, &mut cx).await
322 })
323 }
324
325 fn is_project_item(&self, _cx: &WindowContext) -> bool {
326 true
327 }
328}
329
330async fn update_editor_from_message(
331 this: WeakView<Editor>,
332 project: Model<Project>,
333 message: proto::update_view::Editor,
334 cx: &mut AsyncWindowContext,
335) -> Result<()> {
336 // Open all of the buffers of which excerpts were added to the editor.
337 let inserted_excerpt_buffer_ids = message
338 .inserted_excerpts
339 .iter()
340 .filter_map(|insertion| Some(insertion.excerpt.as_ref()?.buffer_id))
341 .collect::<HashSet<_>>();
342 let inserted_excerpt_buffers = project.update(cx, |project, cx| {
343 inserted_excerpt_buffer_ids
344 .into_iter()
345 .map(|id| BufferId::new(id).map(|id| project.open_buffer_by_id(id, cx)))
346 .collect::<Result<Vec<_>>>()
347 })??;
348 let _inserted_excerpt_buffers = try_join_all(inserted_excerpt_buffers).await?;
349
350 // Update the editor's excerpts.
351 this.update(cx, |editor, cx| {
352 editor.buffer.update(cx, |multibuffer, cx| {
353 let mut removed_excerpt_ids = message
354 .deleted_excerpts
355 .into_iter()
356 .map(ExcerptId::from_proto)
357 .collect::<Vec<_>>();
358 removed_excerpt_ids.sort_by({
359 let multibuffer = multibuffer.read(cx);
360 move |a, b| a.cmp(&b, &multibuffer)
361 });
362
363 let mut insertions = message.inserted_excerpts.into_iter().peekable();
364 while let Some(insertion) = insertions.next() {
365 let Some(excerpt) = insertion.excerpt else {
366 continue;
367 };
368 let Some(previous_excerpt_id) = insertion.previous_excerpt_id else {
369 continue;
370 };
371 let buffer_id = BufferId::new(excerpt.buffer_id)?;
372 let Some(buffer) = project.read(cx).buffer_for_id(buffer_id) else {
373 continue;
374 };
375
376 let adjacent_excerpts = iter::from_fn(|| {
377 let insertion = insertions.peek()?;
378 if insertion.previous_excerpt_id.is_none()
379 && insertion.excerpt.as_ref()?.buffer_id == u64::from(buffer_id)
380 {
381 insertions.next()?.excerpt
382 } else {
383 None
384 }
385 });
386
387 multibuffer.insert_excerpts_with_ids_after(
388 ExcerptId::from_proto(previous_excerpt_id),
389 buffer,
390 [excerpt]
391 .into_iter()
392 .chain(adjacent_excerpts)
393 .filter_map(|excerpt| {
394 Some((
395 ExcerptId::from_proto(excerpt.id),
396 deserialize_excerpt_range(excerpt)?,
397 ))
398 }),
399 cx,
400 );
401 }
402
403 multibuffer.remove_excerpts(removed_excerpt_ids, cx);
404 Result::<(), anyhow::Error>::Ok(())
405 })
406 })??;
407
408 // Deserialize the editor state.
409 let (selections, pending_selection, scroll_top_anchor) = this.update(cx, |editor, cx| {
410 let buffer = editor.buffer.read(cx).read(cx);
411 let selections = message
412 .selections
413 .into_iter()
414 .filter_map(|selection| deserialize_selection(&buffer, selection))
415 .collect::<Vec<_>>();
416 let pending_selection = message
417 .pending_selection
418 .and_then(|selection| deserialize_selection(&buffer, selection));
419 let scroll_top_anchor = message
420 .scroll_top_anchor
421 .and_then(|anchor| deserialize_anchor(&buffer, anchor));
422 anyhow::Ok((selections, pending_selection, scroll_top_anchor))
423 })??;
424
425 // Wait until the buffer has received all of the operations referenced by
426 // the editor's new state.
427 this.update(cx, |editor, cx| {
428 editor.buffer.update(cx, |buffer, cx| {
429 buffer.wait_for_anchors(
430 selections
431 .iter()
432 .chain(pending_selection.as_ref())
433 .flat_map(|selection| [selection.start, selection.end])
434 .chain(scroll_top_anchor),
435 cx,
436 )
437 })
438 })?
439 .await?;
440
441 // Update the editor's state.
442 this.update(cx, |editor, cx| {
443 if !selections.is_empty() || pending_selection.is_some() {
444 editor.set_selections_from_remote(selections, pending_selection, cx);
445 editor.request_autoscroll_remotely(Autoscroll::newest(), cx);
446 } else if let Some(scroll_top_anchor) = scroll_top_anchor {
447 editor.set_scroll_anchor_remote(
448 ScrollAnchor {
449 anchor: scroll_top_anchor,
450 offset: point(message.scroll_x, message.scroll_y),
451 },
452 cx,
453 );
454 }
455 })?;
456 Ok(())
457}
458
459fn serialize_excerpt(
460 buffer_id: BufferId,
461 id: &ExcerptId,
462 range: &ExcerptRange<language::Anchor>,
463) -> Option<proto::Excerpt> {
464 Some(proto::Excerpt {
465 id: id.to_proto(),
466 buffer_id: buffer_id.into(),
467 context_start: Some(serialize_text_anchor(&range.context.start)),
468 context_end: Some(serialize_text_anchor(&range.context.end)),
469 primary_start: range
470 .primary
471 .as_ref()
472 .map(|r| serialize_text_anchor(&r.start)),
473 primary_end: range
474 .primary
475 .as_ref()
476 .map(|r| serialize_text_anchor(&r.end)),
477 })
478}
479
480fn serialize_selection(selection: &Selection<Anchor>) -> proto::Selection {
481 proto::Selection {
482 id: selection.id as u64,
483 start: Some(serialize_anchor(&selection.start)),
484 end: Some(serialize_anchor(&selection.end)),
485 reversed: selection.reversed,
486 }
487}
488
489fn serialize_anchor(anchor: &Anchor) -> proto::EditorAnchor {
490 proto::EditorAnchor {
491 excerpt_id: anchor.excerpt_id.to_proto(),
492 anchor: Some(serialize_text_anchor(&anchor.text_anchor)),
493 }
494}
495
496fn deserialize_excerpt_range(excerpt: proto::Excerpt) -> Option<ExcerptRange<language::Anchor>> {
497 let context = {
498 let start = language::proto::deserialize_anchor(excerpt.context_start?)?;
499 let end = language::proto::deserialize_anchor(excerpt.context_end?)?;
500 start..end
501 };
502 let primary = excerpt
503 .primary_start
504 .zip(excerpt.primary_end)
505 .and_then(|(start, end)| {
506 let start = language::proto::deserialize_anchor(start)?;
507 let end = language::proto::deserialize_anchor(end)?;
508 Some(start..end)
509 });
510 Some(ExcerptRange { context, primary })
511}
512
513fn deserialize_selection(
514 buffer: &MultiBufferSnapshot,
515 selection: proto::Selection,
516) -> Option<Selection<Anchor>> {
517 Some(Selection {
518 id: selection.id as usize,
519 start: deserialize_anchor(buffer, selection.start?)?,
520 end: deserialize_anchor(buffer, selection.end?)?,
521 reversed: selection.reversed,
522 goal: SelectionGoal::None,
523 })
524}
525
526fn deserialize_anchor(buffer: &MultiBufferSnapshot, anchor: proto::EditorAnchor) -> Option<Anchor> {
527 let excerpt_id = ExcerptId::from_proto(anchor.excerpt_id);
528 Some(Anchor {
529 excerpt_id,
530 text_anchor: language::proto::deserialize_anchor(anchor.anchor?)?,
531 buffer_id: buffer.buffer_id_for_excerpt(excerpt_id),
532 })
533}
534
535impl Item for Editor {
536 type Event = EditorEvent;
537
538 fn navigate(&mut self, data: Box<dyn std::any::Any>, cx: &mut ViewContext<Self>) -> bool {
539 if let Ok(data) = data.downcast::<NavigationData>() {
540 let newest_selection = self.selections.newest::<Point>(cx);
541 let buffer = self.buffer.read(cx).read(cx);
542 let offset = if buffer.can_resolve(&data.cursor_anchor) {
543 data.cursor_anchor.to_point(&buffer)
544 } else {
545 buffer.clip_point(data.cursor_position, Bias::Left)
546 };
547
548 let mut scroll_anchor = data.scroll_anchor;
549 if !buffer.can_resolve(&scroll_anchor.anchor) {
550 scroll_anchor.anchor = buffer.anchor_before(
551 buffer.clip_point(Point::new(data.scroll_top_row, 0), Bias::Left),
552 );
553 }
554
555 drop(buffer);
556
557 if newest_selection.head() == offset {
558 false
559 } else {
560 let nav_history = self.nav_history.take();
561 self.set_scroll_anchor(scroll_anchor, cx);
562 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
563 s.select_ranges([offset..offset])
564 });
565 self.nav_history = nav_history;
566 true
567 }
568 } else {
569 false
570 }
571 }
572
573 fn tab_tooltip_text(&self, cx: &AppContext) -> Option<SharedString> {
574 let file_path = self
575 .buffer()
576 .read(cx)
577 .as_singleton()?
578 .read(cx)
579 .file()
580 .and_then(|f| f.as_local())?
581 .abs_path(cx);
582
583 let file_path = file_path.compact().to_string_lossy().to_string();
584
585 Some(file_path.into())
586 }
587
588 fn telemetry_event_text(&self) -> Option<&'static str> {
589 None
590 }
591
592 fn tab_description(&self, detail: usize, cx: &AppContext) -> Option<SharedString> {
593 let path = path_for_buffer(&self.buffer, detail, true, cx)?;
594 Some(path.to_string_lossy().to_string().into())
595 }
596
597 fn tab_content(&self, detail: Option<usize>, selected: bool, cx: &WindowContext) -> AnyElement {
598 let label_color = if ItemSettings::get_global(cx).git_status {
599 self.buffer()
600 .read(cx)
601 .as_singleton()
602 .and_then(|buffer| buffer.read(cx).project_path(cx))
603 .and_then(|path| self.project.as_ref()?.read(cx).entry_for_path(&path, cx))
604 .map(|entry| {
605 entry_git_aware_label_color(entry.git_status, entry.is_ignored, selected)
606 })
607 .unwrap_or_else(|| entry_label_color(selected))
608 } else {
609 entry_label_color(selected)
610 };
611
612 let description = detail.and_then(|detail| {
613 let path = path_for_buffer(&self.buffer, detail, false, cx)?;
614 let description = path.to_string_lossy();
615 let description = description.trim();
616
617 if description.is_empty() {
618 return None;
619 }
620
621 Some(util::truncate_and_trailoff(&description, MAX_TAB_TITLE_LEN))
622 });
623
624 h_flex()
625 .gap_2()
626 .child(Label::new(self.title(cx).to_string()).color(label_color))
627 .when_some(description, |this, description| {
628 this.child(
629 Label::new(description)
630 .size(LabelSize::XSmall)
631 .color(Color::Muted),
632 )
633 })
634 .into_any_element()
635 }
636
637 fn for_each_project_item(
638 &self,
639 cx: &AppContext,
640 f: &mut dyn FnMut(EntityId, &dyn project::Item),
641 ) {
642 self.buffer
643 .read(cx)
644 .for_each_buffer(|buffer| f(buffer.entity_id(), buffer.read(cx)));
645 }
646
647 fn is_singleton(&self, cx: &AppContext) -> bool {
648 self.buffer.read(cx).is_singleton()
649 }
650
651 fn clone_on_split(
652 &self,
653 _workspace_id: WorkspaceId,
654 cx: &mut ViewContext<Self>,
655 ) -> Option<View<Editor>>
656 where
657 Self: Sized,
658 {
659 Some(cx.new_view(|cx| self.clone(cx)))
660 }
661
662 fn set_nav_history(&mut self, history: ItemNavHistory, _: &mut ViewContext<Self>) {
663 self.nav_history = Some(history);
664 }
665
666 fn deactivated(&mut self, cx: &mut ViewContext<Self>) {
667 let selection = self.selections.newest_anchor();
668 self.push_to_nav_history(selection.head(), None, cx);
669 }
670
671 fn workspace_deactivated(&mut self, cx: &mut ViewContext<Self>) {
672 self.hide_hovered_link(cx);
673 }
674
675 fn is_dirty(&self, cx: &AppContext) -> bool {
676 self.buffer().read(cx).read(cx).is_dirty()
677 }
678
679 fn has_conflict(&self, cx: &AppContext) -> bool {
680 self.buffer().read(cx).read(cx).has_conflict()
681 }
682
683 fn can_save(&self, cx: &AppContext) -> bool {
684 let buffer = &self.buffer().read(cx);
685 if let Some(buffer) = buffer.as_singleton() {
686 buffer.read(cx).project_path(cx).is_some()
687 } else {
688 true
689 }
690 }
691
692 fn save(
693 &mut self,
694 format: bool,
695 project: Model<Project>,
696 cx: &mut ViewContext<Self>,
697 ) -> Task<Result<()>> {
698 self.report_editor_event("save", None, cx);
699 let buffers = self.buffer().clone().read(cx).all_buffers();
700 cx.spawn(|this, mut cx| async move {
701 if format {
702 this.update(&mut cx, |this, cx| {
703 this.perform_format(project.clone(), FormatTrigger::Save, cx)
704 })?
705 .await?;
706 }
707
708 if buffers.len() == 1 {
709 project
710 .update(&mut cx, |project, cx| project.save_buffers(buffers, cx))?
711 .await?;
712 } else {
713 // For multi-buffers, only save those ones that contain changes. For clean buffers
714 // we simulate saving by calling `Buffer::did_save`, so that language servers or
715 // other downstream listeners of save events get notified.
716 let (dirty_buffers, clean_buffers) = buffers.into_iter().partition(|buffer| {
717 buffer
718 .update(&mut cx, |buffer, _| {
719 buffer.is_dirty() || buffer.has_conflict()
720 })
721 .unwrap_or(false)
722 });
723
724 project
725 .update(&mut cx, |project, cx| {
726 project.save_buffers(dirty_buffers, cx)
727 })?
728 .await?;
729 for buffer in clean_buffers {
730 buffer
731 .update(&mut cx, |buffer, cx| {
732 let version = buffer.saved_version().clone();
733 let fingerprint = buffer.saved_version_fingerprint();
734 let mtime = buffer.saved_mtime();
735 buffer.did_save(version, fingerprint, mtime, cx);
736 })
737 .ok();
738 }
739 }
740
741 Ok(())
742 })
743 }
744
745 fn save_as(
746 &mut self,
747 project: Model<Project>,
748 abs_path: PathBuf,
749 cx: &mut ViewContext<Self>,
750 ) -> Task<Result<()>> {
751 let buffer = self
752 .buffer()
753 .read(cx)
754 .as_singleton()
755 .expect("cannot call save_as on an excerpt list");
756
757 let file_extension = abs_path
758 .extension()
759 .map(|a| a.to_string_lossy().to_string());
760 self.report_editor_event("save", file_extension, cx);
761
762 project.update(cx, |project, cx| {
763 project.save_buffer_as(buffer, abs_path, cx)
764 })
765 }
766
767 fn reload(&mut self, project: Model<Project>, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
768 let buffer = self.buffer().clone();
769 let buffers = self.buffer.read(cx).all_buffers();
770 let reload_buffers =
771 project.update(cx, |project, cx| project.reload_buffers(buffers, true, cx));
772 cx.spawn(|this, mut cx| async move {
773 let transaction = reload_buffers.log_err().await;
774 this.update(&mut cx, |editor, cx| {
775 editor.request_autoscroll(Autoscroll::fit(), cx)
776 })?;
777 buffer
778 .update(&mut cx, |buffer, cx| {
779 if let Some(transaction) = transaction {
780 if !buffer.is_singleton() {
781 buffer.push_transaction(&transaction.0, cx);
782 }
783 }
784 })
785 .ok();
786 Ok(())
787 })
788 }
789
790 fn as_searchable(&self, handle: &View<Self>) -> Option<Box<dyn SearchableItemHandle>> {
791 Some(Box::new(handle.clone()))
792 }
793
794 fn pixel_position_of_cursor(&self, _: &AppContext) -> Option<gpui::Point<Pixels>> {
795 self.pixel_position_of_newest_cursor
796 }
797
798 fn breadcrumb_location(&self) -> ToolbarItemLocation {
799 if self.show_breadcrumbs {
800 ToolbarItemLocation::PrimaryLeft
801 } else {
802 ToolbarItemLocation::Hidden
803 }
804 }
805
806 fn breadcrumbs(&self, variant: &Theme, cx: &AppContext) -> Option<Vec<BreadcrumbText>> {
807 let cursor = self.selections.newest_anchor().head();
808 let multibuffer = &self.buffer().read(cx);
809 let (buffer_id, symbols) =
810 multibuffer.symbols_containing(cursor, Some(&variant.syntax()), cx)?;
811 let buffer = multibuffer.buffer(buffer_id)?;
812
813 let buffer = buffer.read(cx);
814 let filename = buffer
815 .snapshot()
816 .resolve_file_path(
817 cx,
818 self.project
819 .as_ref()
820 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
821 .unwrap_or_default(),
822 )
823 .map(|path| path.to_string_lossy().to_string())
824 .unwrap_or_else(|| "untitled".to_string());
825
826 let mut breadcrumbs = vec![BreadcrumbText {
827 text: filename,
828 highlights: None,
829 }];
830 breadcrumbs.extend(symbols.into_iter().map(|symbol| BreadcrumbText {
831 text: symbol.text,
832 highlights: Some(symbol.highlight_ranges),
833 }));
834 Some(breadcrumbs)
835 }
836
837 fn added_to_workspace(&mut self, workspace: &mut Workspace, cx: &mut ViewContext<Self>) {
838 let workspace_id = workspace.database_id();
839 let item_id = cx.view().item_id().as_u64() as ItemId;
840 self.workspace = Some((workspace.weak_handle(), workspace.database_id()));
841
842 fn serialize(
843 buffer: Model<Buffer>,
844 workspace_id: WorkspaceId,
845 item_id: ItemId,
846 cx: &mut AppContext,
847 ) {
848 if let Some(file) = buffer.read(cx).file().and_then(|file| file.as_local()) {
849 let path = file.abs_path(cx);
850
851 cx.background_executor()
852 .spawn(async move {
853 DB.save_path(item_id, workspace_id, path.clone())
854 .await
855 .log_err()
856 })
857 .detach();
858 }
859 }
860
861 if let Some(buffer) = self.buffer().read(cx).as_singleton() {
862 serialize(buffer.clone(), workspace_id, item_id, cx);
863
864 cx.subscribe(&buffer, |this, buffer, event, cx| {
865 if let Some((_, workspace_id)) = this.workspace.as_ref() {
866 if let language::Event::FileHandleChanged = event {
867 serialize(
868 buffer,
869 *workspace_id,
870 cx.view().item_id().as_u64() as ItemId,
871 cx,
872 );
873 }
874 }
875 })
876 .detach();
877 }
878 }
879
880 fn serialized_item_kind() -> Option<&'static str> {
881 Some("Editor")
882 }
883
884 fn to_item_events(event: &EditorEvent, mut f: impl FnMut(ItemEvent)) {
885 match event {
886 EditorEvent::Closed => f(ItemEvent::CloseItem),
887
888 EditorEvent::Saved | EditorEvent::TitleChanged => {
889 f(ItemEvent::UpdateTab);
890 f(ItemEvent::UpdateBreadcrumbs);
891 }
892
893 EditorEvent::Reparsed => {
894 f(ItemEvent::UpdateBreadcrumbs);
895 }
896
897 EditorEvent::SelectionsChanged { local } if *local => {
898 f(ItemEvent::UpdateBreadcrumbs);
899 }
900
901 EditorEvent::DirtyChanged => {
902 f(ItemEvent::UpdateTab);
903 }
904
905 EditorEvent::BufferEdited => {
906 f(ItemEvent::Edit);
907 f(ItemEvent::UpdateBreadcrumbs);
908 }
909
910 EditorEvent::ExcerptsAdded { .. } | EditorEvent::ExcerptsRemoved { .. } => {
911 f(ItemEvent::Edit);
912 }
913
914 _ => {}
915 }
916 }
917
918 fn deserialize(
919 project: Model<Project>,
920 _workspace: WeakView<Workspace>,
921 workspace_id: workspace::WorkspaceId,
922 item_id: ItemId,
923 cx: &mut ViewContext<Pane>,
924 ) -> Task<Result<View<Self>>> {
925 let project_item: Result<_> = project.update(cx, |project, cx| {
926 // Look up the path with this key associated, create a self with that path
927 let path = DB
928 .get_path(item_id, workspace_id)?
929 .context("No path stored for this editor")?;
930
931 let (worktree, path) = project
932 .find_local_worktree(&path, cx)
933 .with_context(|| format!("No worktree for path: {path:?}"))?;
934 let project_path = ProjectPath {
935 worktree_id: worktree.read(cx).id(),
936 path: path.into(),
937 };
938
939 Ok(project.open_path(project_path, cx))
940 });
941
942 project_item
943 .map(|project_item| {
944 cx.spawn(|pane, mut cx| async move {
945 let (_, project_item) = project_item.await?;
946 let buffer = project_item
947 .downcast::<Buffer>()
948 .map_err(|_| anyhow!("Project item at stored path was not a buffer"))?;
949 pane.update(&mut cx, |_, cx| {
950 cx.new_view(|cx| {
951 let mut editor = Editor::for_buffer(buffer, Some(project), cx);
952
953 editor.read_scroll_position_from_db(item_id, workspace_id, cx);
954 editor
955 })
956 })
957 })
958 })
959 .unwrap_or_else(|error| Task::ready(Err(error)))
960 }
961}
962
963impl ProjectItem for Editor {
964 type Item = Buffer;
965
966 fn for_project_item(
967 project: Model<Project>,
968 buffer: Model<Buffer>,
969 cx: &mut ViewContext<Self>,
970 ) -> Self {
971 Self::for_buffer(buffer, Some(project), cx)
972 }
973}
974
975impl EventEmitter<SearchEvent> for Editor {}
976
977pub(crate) enum BufferSearchHighlights {}
978impl SearchableItem for Editor {
979 type Match = Range<Anchor>;
980
981 fn clear_matches(&mut self, cx: &mut ViewContext<Self>) {
982 self.clear_background_highlights::<BufferSearchHighlights>(cx);
983 }
984
985 fn update_matches(&mut self, matches: Vec<Range<Anchor>>, cx: &mut ViewContext<Self>) {
986 self.highlight_background::<BufferSearchHighlights>(
987 matches,
988 |theme| theme.search_match_background,
989 cx,
990 );
991 }
992
993 fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> String {
994 let setting = EditorSettings::get_global(cx).seed_search_query_from_cursor;
995 let snapshot = &self.snapshot(cx).buffer_snapshot;
996 let selection = self.selections.newest::<usize>(cx);
997
998 match setting {
999 SeedQuerySetting::Never => String::new(),
1000 SeedQuerySetting::Selection | SeedQuerySetting::Always if !selection.is_empty() => {
1001 snapshot
1002 .text_for_range(selection.start..selection.end)
1003 .collect()
1004 }
1005 SeedQuerySetting::Selection => String::new(),
1006 SeedQuerySetting::Always => {
1007 let (range, kind) = snapshot.surrounding_word(selection.start);
1008 if kind == Some(CharKind::Word) {
1009 let text: String = snapshot.text_for_range(range).collect();
1010 if !text.trim().is_empty() {
1011 return text;
1012 }
1013 }
1014 String::new()
1015 }
1016 }
1017 }
1018
1019 fn activate_match(
1020 &mut self,
1021 index: usize,
1022 matches: Vec<Range<Anchor>>,
1023 cx: &mut ViewContext<Self>,
1024 ) {
1025 self.unfold_ranges([matches[index].clone()], false, true, cx);
1026 let range = self.range_for_match(&matches[index]);
1027 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
1028 s.select_ranges([range]);
1029 })
1030 }
1031
1032 fn select_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>) {
1033 self.unfold_ranges(matches.clone(), false, false, cx);
1034 let mut ranges = Vec::new();
1035 for m in &matches {
1036 ranges.push(self.range_for_match(&m))
1037 }
1038 self.change_selections(None, cx, |s| s.select_ranges(ranges));
1039 }
1040 fn replace(
1041 &mut self,
1042 identifier: &Self::Match,
1043 query: &SearchQuery,
1044 cx: &mut ViewContext<Self>,
1045 ) {
1046 let text = self.buffer.read(cx);
1047 let text = text.snapshot(cx);
1048 let text = text.text_for_range(identifier.clone()).collect::<Vec<_>>();
1049 let text: Cow<_> = if text.len() == 1 {
1050 text.first().cloned().unwrap().into()
1051 } else {
1052 let joined_chunks = text.join("");
1053 joined_chunks.into()
1054 };
1055
1056 if let Some(replacement) = query.replacement_for(&text) {
1057 self.transact(cx, |this, cx| {
1058 this.edit([(identifier.clone(), Arc::from(&*replacement))], cx);
1059 });
1060 }
1061 }
1062 fn match_index_for_direction(
1063 &mut self,
1064 matches: &Vec<Range<Anchor>>,
1065 current_index: usize,
1066 direction: Direction,
1067 count: usize,
1068 cx: &mut ViewContext<Self>,
1069 ) -> usize {
1070 let buffer = self.buffer().read(cx).snapshot(cx);
1071 let current_index_position = if self.selections.disjoint_anchors().len() == 1 {
1072 self.selections.newest_anchor().head()
1073 } else {
1074 matches[current_index].start
1075 };
1076
1077 let mut count = count % matches.len();
1078 if count == 0 {
1079 return current_index;
1080 }
1081 match direction {
1082 Direction::Next => {
1083 if matches[current_index]
1084 .start
1085 .cmp(¤t_index_position, &buffer)
1086 .is_gt()
1087 {
1088 count = count - 1
1089 }
1090
1091 (current_index + count) % matches.len()
1092 }
1093 Direction::Prev => {
1094 if matches[current_index]
1095 .end
1096 .cmp(¤t_index_position, &buffer)
1097 .is_lt()
1098 {
1099 count = count - 1;
1100 }
1101
1102 if current_index >= count {
1103 current_index - count
1104 } else {
1105 matches.len() - (count - current_index)
1106 }
1107 }
1108 }
1109 }
1110
1111 fn find_matches(
1112 &mut self,
1113 query: Arc<project::search::SearchQuery>,
1114 cx: &mut ViewContext<Self>,
1115 ) -> Task<Vec<Range<Anchor>>> {
1116 let buffer = self.buffer().read(cx).snapshot(cx);
1117 cx.background_executor().spawn(async move {
1118 let mut ranges = Vec::new();
1119 if let Some((_, _, excerpt_buffer)) = buffer.as_singleton() {
1120 ranges.extend(
1121 query
1122 .search(excerpt_buffer, None)
1123 .await
1124 .into_iter()
1125 .map(|range| {
1126 buffer.anchor_after(range.start)..buffer.anchor_before(range.end)
1127 }),
1128 );
1129 } else {
1130 for excerpt in buffer.excerpt_boundaries_in_range(0..buffer.len()) {
1131 let excerpt_range = excerpt.range.context.to_offset(&excerpt.buffer);
1132 ranges.extend(
1133 query
1134 .search(&excerpt.buffer, Some(excerpt_range.clone()))
1135 .await
1136 .into_iter()
1137 .map(|range| {
1138 let start = excerpt
1139 .buffer
1140 .anchor_after(excerpt_range.start + range.start);
1141 let end = excerpt
1142 .buffer
1143 .anchor_before(excerpt_range.start + range.end);
1144 buffer.anchor_in_excerpt(excerpt.id, start).unwrap()
1145 ..buffer.anchor_in_excerpt(excerpt.id, end).unwrap()
1146 }),
1147 );
1148 }
1149 }
1150 ranges
1151 })
1152 }
1153
1154 fn active_match_index(
1155 &mut self,
1156 matches: Vec<Range<Anchor>>,
1157 cx: &mut ViewContext<Self>,
1158 ) -> Option<usize> {
1159 active_match_index(
1160 &matches,
1161 &self.selections.newest_anchor().head(),
1162 &self.buffer().read(cx).snapshot(cx),
1163 )
1164 }
1165}
1166
1167pub fn active_match_index(
1168 ranges: &[Range<Anchor>],
1169 cursor: &Anchor,
1170 buffer: &MultiBufferSnapshot,
1171) -> Option<usize> {
1172 if ranges.is_empty() {
1173 None
1174 } else {
1175 match ranges.binary_search_by(|probe| {
1176 if probe.end.cmp(cursor, buffer).is_lt() {
1177 Ordering::Less
1178 } else if probe.start.cmp(cursor, buffer).is_gt() {
1179 Ordering::Greater
1180 } else {
1181 Ordering::Equal
1182 }
1183 }) {
1184 Ok(i) | Err(i) => Some(cmp::min(i, ranges.len() - 1)),
1185 }
1186 }
1187}
1188
1189pub fn entry_label_color(selected: bool) -> Color {
1190 if selected {
1191 Color::Default
1192 } else {
1193 Color::Muted
1194 }
1195}
1196
1197pub fn entry_git_aware_label_color(
1198 git_status: Option<GitFileStatus>,
1199 ignored: bool,
1200 selected: bool,
1201) -> Color {
1202 if ignored {
1203 Color::Disabled
1204 } else {
1205 match git_status {
1206 Some(GitFileStatus::Added) => Color::Created,
1207 Some(GitFileStatus::Modified) => Color::Modified,
1208 Some(GitFileStatus::Conflict) => Color::Conflict,
1209 None => entry_label_color(selected),
1210 }
1211 }
1212}
1213
1214fn path_for_buffer<'a>(
1215 buffer: &Model<MultiBuffer>,
1216 height: usize,
1217 include_filename: bool,
1218 cx: &'a AppContext,
1219) -> Option<Cow<'a, Path>> {
1220 let file = buffer.read(cx).as_singleton()?.read(cx).file()?;
1221 path_for_file(file.as_ref(), height, include_filename, cx)
1222}
1223
1224fn path_for_file<'a>(
1225 file: &'a dyn language::File,
1226 mut height: usize,
1227 include_filename: bool,
1228 cx: &'a AppContext,
1229) -> Option<Cow<'a, Path>> {
1230 // Ensure we always render at least the filename.
1231 height += 1;
1232
1233 let mut prefix = file.path().as_ref();
1234 while height > 0 {
1235 if let Some(parent) = prefix.parent() {
1236 prefix = parent;
1237 height -= 1;
1238 } else {
1239 break;
1240 }
1241 }
1242
1243 // Here we could have just always used `full_path`, but that is very
1244 // allocation-heavy and so we try to use a `Cow<Path>` if we haven't
1245 // traversed all the way up to the worktree's root.
1246 if height > 0 {
1247 let full_path = file.full_path(cx);
1248 if include_filename {
1249 Some(full_path.into())
1250 } else {
1251 Some(full_path.parent()?.to_path_buf().into())
1252 }
1253 } else {
1254 let mut path = file.path().strip_prefix(prefix).ok()?;
1255 if !include_filename {
1256 path = path.parent()?;
1257 }
1258 Some(path.into())
1259 }
1260}
1261
1262#[cfg(test)]
1263mod tests {
1264 use super::*;
1265 use gpui::AppContext;
1266 use language::TestFile;
1267 use std::path::Path;
1268
1269 #[gpui::test]
1270 fn test_path_for_file(cx: &mut AppContext) {
1271 let file = TestFile {
1272 path: Path::new("").into(),
1273 root_name: String::new(),
1274 };
1275 assert_eq!(path_for_file(&file, 0, false, cx), None);
1276 }
1277}