1use crate::{
2 editor_settings::SeedQuerySetting, link_go_to_definition::hide_link_definition,
3 movement::surrounding_word, persistence::DB, scroll::ScrollAnchor, Anchor, Autoscroll, Editor,
4 EditorEvent, EditorSettings, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot,
5 NavigationData, ToPoint as _,
6};
7use anyhow::{anyhow, Context, Result};
8use collections::HashSet;
9use futures::future::try_join_all;
10use gpui::{
11 div, point, AnyElement, AppContext, AsyncAppContext, Entity, EntityId, EventEmitter,
12 FocusHandle, Model, ParentElement, Pixels, SharedString, Styled, Subscription, Task, View,
13 ViewContext, VisualContext, WeakView, WindowContext,
14};
15use language::{
16 proto::serialize_anchor as serialize_text_anchor, Bias, Buffer, CharKind, OffsetRangeExt,
17 Point, SelectionGoal,
18};
19use project::{search::SearchQuery, FormatTrigger, Item as _, Project, ProjectPath};
20use rpc::proto::{self, update_view, PeerId};
21use settings::Settings;
22use smallvec::SmallVec;
23use std::{
24 borrow::Cow,
25 cmp::{self, Ordering},
26 iter,
27 ops::Range,
28 path::{Path, PathBuf},
29 sync::Arc,
30};
31use text::Selection;
32use theme::{ActiveTheme, Theme};
33use ui::{Color, Label};
34use util::{paths::PathExt, ResultExt, TryFutureExt};
35use workspace::item::{BreadcrumbText, FollowEvent, FollowableEvents, FollowableItemHandle};
36use workspace::{
37 item::{FollowableItem, Item, ItemEvent, ItemHandle, ProjectItem},
38 searchable::{Direction, SearchEvent, SearchableItem, SearchableItemHandle},
39 ItemId, ItemNavHistory, Pane, ToolbarItemLocation, ViewId, Workspace, WorkspaceId,
40};
41
42pub const MAX_TAB_TITLE_LEN: usize = 24;
43
44impl FollowableEvents for EditorEvent {
45 fn to_follow_event(&self) -> Option<workspace::item::FollowEvent> {
46 match self {
47 EditorEvent::Edited => Some(FollowEvent::Unfollow),
48 EditorEvent::SelectionsChanged { local }
49 | EditorEvent::ScrollPositionChanged { local, .. } => {
50 if *local {
51 Some(FollowEvent::Unfollow)
52 } else {
53 None
54 }
55 }
56 _ => None,
57 }
58 }
59}
60
61impl EventEmitter<ItemEvent> for Editor {}
62
63impl FollowableItem for Editor {
64 type FollowableEvent = EditorEvent;
65 fn remote_id(&self) -> Option<ViewId> {
66 self.remote_id
67 }
68
69 fn from_state_proto(
70 pane: View<workspace::Pane>,
71 workspace: View<Workspace>,
72 remote_id: ViewId,
73 state: &mut Option<proto::view::Variant>,
74 cx: &mut AppContext,
75 ) -> Option<Task<Result<View<Self>>>> {
76 todo!()
77 }
78 // let project = workspace.read(cx).project().to_owned();
79 // let Some(proto::view::Variant::Editor(_)) = state else {
80 // return None;
81 // };
82 // let Some(proto::view::Variant::Editor(state)) = state.take() else {
83 // unreachable!()
84 // };
85
86 // let client = project.read(cx).client();
87 // let replica_id = project.read(cx).replica_id();
88 // let buffer_ids = state
89 // .excerpts
90 // .iter()
91 // .map(|excerpt| excerpt.buffer_id)
92 // .collect::<HashSet<_>>();
93 // let buffers = project.update(cx, |project, cx| {
94 // buffer_ids
95 // .iter()
96 // .map(|id| project.open_buffer_by_id(*id, cx))
97 // .collect::<Vec<_>>()
98 // });
99
100 // let pane = pane.downgrade();
101 // Some(cx.spawn(|mut cx| async move {
102 // let mut buffers = futures::future::try_join_all(buffers).await?;
103 // let editor = pane.read_with(&cx, |pane, cx| {
104 // let mut editors = pane.items_of_type::<Self>();
105 // editors.find(|editor| {
106 // let ids_match = editor.remote_id(&client, cx) == Some(remote_id);
107 // let singleton_buffer_matches = state.singleton
108 // && buffers.first()
109 // == editor.read(cx).buffer.read(cx).as_singleton().as_ref();
110 // ids_match || singleton_buffer_matches
111 // })
112 // })?;
113
114 // let editor = if let Some(editor) = editor {
115 // editor
116 // } else {
117 // pane.update(&mut cx, |_, cx| {
118 // let multibuffer = cx.add_model(|cx| {
119 // let mut multibuffer;
120 // if state.singleton && buffers.len() == 1 {
121 // multibuffer = MultiBuffer::singleton(buffers.pop().unwrap(), cx)
122 // } else {
123 // multibuffer = MultiBuffer::new(replica_id);
124 // let mut excerpts = state.excerpts.into_iter().peekable();
125 // while let Some(excerpt) = excerpts.peek() {
126 // let buffer_id = excerpt.buffer_id;
127 // let buffer_excerpts = iter::from_fn(|| {
128 // let excerpt = excerpts.peek()?;
129 // (excerpt.buffer_id == buffer_id)
130 // .then(|| excerpts.next().unwrap())
131 // });
132 // let buffer =
133 // buffers.iter().find(|b| b.read(cx).remote_id() == buffer_id);
134 // if let Some(buffer) = buffer {
135 // multibuffer.push_excerpts(
136 // buffer.clone(),
137 // buffer_excerpts.filter_map(deserialize_excerpt_range),
138 // cx,
139 // );
140 // }
141 // }
142 // };
143
144 // if let Some(title) = &state.title {
145 // multibuffer = multibuffer.with_title(title.clone())
146 // }
147
148 // multibuffer
149 // });
150
151 // cx.add_view(|cx| {
152 // let mut editor =
153 // Editor::for_multibuffer(multibuffer, Some(project.clone()), cx);
154 // editor.remote_id = Some(remote_id);
155 // editor
156 // })
157 // })?
158 // };
159
160 // update_editor_from_message(
161 // editor.downgrade(),
162 // project,
163 // proto::update_view::Editor {
164 // selections: state.selections,
165 // pending_selection: state.pending_selection,
166 // scroll_top_anchor: state.scroll_top_anchor,
167 // scroll_x: state.scroll_x,
168 // scroll_y: state.scroll_y,
169 // ..Default::default()
170 // },
171 // &mut cx,
172 // )
173 // .await?;
174
175 // Ok(editor)
176 // }))
177 // }
178
179 fn set_leader_peer_id(&mut self, leader_peer_id: Option<PeerId>, cx: &mut ViewContext<Self>) {
180 self.leader_peer_id = leader_peer_id;
181 if self.leader_peer_id.is_some() {
182 self.buffer.update(cx, |buffer, cx| {
183 buffer.remove_active_selections(cx);
184 });
185 } else if self.focus_handle.is_focused(cx) {
186 self.buffer.update(cx, |buffer, cx| {
187 buffer.set_active_selections(
188 &self.selections.disjoint_anchors(),
189 self.selections.line_mode,
190 self.cursor_shape,
191 cx,
192 );
193 });
194 }
195 cx.notify();
196 }
197
198 fn to_state_proto(&self, cx: &AppContext) -> Option<proto::view::Variant> {
199 let buffer = self.buffer.read(cx);
200 let scroll_anchor = self.scroll_manager.anchor();
201 let excerpts = buffer
202 .read(cx)
203 .excerpts()
204 .map(|(id, buffer, range)| proto::Excerpt {
205 id: id.to_proto(),
206 buffer_id: buffer.remote_id(),
207 context_start: Some(serialize_text_anchor(&range.context.start)),
208 context_end: Some(serialize_text_anchor(&range.context.end)),
209 primary_start: range
210 .primary
211 .as_ref()
212 .map(|range| serialize_text_anchor(&range.start)),
213 primary_end: range
214 .primary
215 .as_ref()
216 .map(|range| serialize_text_anchor(&range.end)),
217 })
218 .collect();
219
220 Some(proto::view::Variant::Editor(proto::view::Editor {
221 singleton: buffer.is_singleton(),
222 title: (!buffer.is_singleton()).then(|| buffer.title(cx).into()),
223 excerpts,
224 scroll_top_anchor: Some(serialize_anchor(&scroll_anchor.anchor)),
225 scroll_x: scroll_anchor.offset.x,
226 scroll_y: scroll_anchor.offset.y,
227 selections: self
228 .selections
229 .disjoint_anchors()
230 .iter()
231 .map(serialize_selection)
232 .collect(),
233 pending_selection: self
234 .selections
235 .pending_anchor()
236 .as_ref()
237 .map(serialize_selection),
238 }))
239 }
240
241 fn add_event_to_update_proto(
242 &self,
243 event: &Self::FollowableEvent,
244 update: &mut Option<proto::update_view::Variant>,
245 cx: &AppContext,
246 ) -> bool {
247 let update =
248 update.get_or_insert_with(|| proto::update_view::Variant::Editor(Default::default()));
249
250 match update {
251 proto::update_view::Variant::Editor(update) => match event {
252 EditorEvent::ExcerptsAdded {
253 buffer,
254 predecessor,
255 excerpts,
256 } => {
257 let buffer_id = buffer.read(cx).remote_id();
258 let mut excerpts = excerpts.iter();
259 if let Some((id, range)) = excerpts.next() {
260 update.inserted_excerpts.push(proto::ExcerptInsertion {
261 previous_excerpt_id: Some(predecessor.to_proto()),
262 excerpt: serialize_excerpt(buffer_id, id, range),
263 });
264 update.inserted_excerpts.extend(excerpts.map(|(id, range)| {
265 proto::ExcerptInsertion {
266 previous_excerpt_id: None,
267 excerpt: serialize_excerpt(buffer_id, id, range),
268 }
269 }))
270 }
271 true
272 }
273 EditorEvent::ExcerptsRemoved { ids } => {
274 update
275 .deleted_excerpts
276 .extend(ids.iter().map(ExcerptId::to_proto));
277 true
278 }
279 EditorEvent::ScrollPositionChanged { .. } => {
280 let scroll_anchor = self.scroll_manager.anchor();
281 update.scroll_top_anchor = Some(serialize_anchor(&scroll_anchor.anchor));
282 update.scroll_x = scroll_anchor.offset.x;
283 update.scroll_y = scroll_anchor.offset.y;
284 true
285 }
286 EditorEvent::SelectionsChanged { .. } => {
287 update.selections = self
288 .selections
289 .disjoint_anchors()
290 .iter()
291 .map(serialize_selection)
292 .collect();
293 update.pending_selection = self
294 .selections
295 .pending_anchor()
296 .as_ref()
297 .map(serialize_selection);
298 true
299 }
300 _ => false,
301 },
302 }
303 }
304
305 fn apply_update_proto(
306 &mut self,
307 project: &Model<Project>,
308 message: update_view::Variant,
309 cx: &mut ViewContext<Self>,
310 ) -> Task<Result<()>> {
311 let update_view::Variant::Editor(message) = message;
312 let project = project.clone();
313 cx.spawn(|this, mut cx| async move {
314 update_editor_from_message(this, project, message, &mut cx).await
315 })
316 }
317
318 fn is_project_item(&self, _cx: &AppContext) -> bool {
319 true
320 }
321}
322
323async fn update_editor_from_message(
324 this: WeakView<Editor>,
325 project: Model<Project>,
326 message: proto::update_view::Editor,
327 cx: &mut AsyncAppContext,
328) -> Result<()> {
329 todo!()
330}
331// Previous implementation of the above
332// // Open all of the buffers of which excerpts were added to the editor.
333// let inserted_excerpt_buffer_ids = message
334// .inserted_excerpts
335// .iter()
336// .filter_map(|insertion| Some(insertion.excerpt.as_ref()?.buffer_id))
337// .collect::<HashSet<_>>();
338// let inserted_excerpt_buffers = project.update(cx, |project, cx| {
339// inserted_excerpt_buffer_ids
340// .into_iter()
341// .map(|id| project.open_buffer_by_id(id, cx))
342// .collect::<Vec<_>>()
343// })?;
344// let _inserted_excerpt_buffers = try_join_all(inserted_excerpt_buffers).await?;
345
346// // Update the editor's excerpts.
347// this.update(cx, |editor, cx| {
348// editor.buffer.update(cx, |multibuffer, cx| {
349// let mut removed_excerpt_ids = message
350// .deleted_excerpts
351// .into_iter()
352// .map(ExcerptId::from_proto)
353// .collect::<Vec<_>>();
354// removed_excerpt_ids.sort_by({
355// let multibuffer = multibuffer.read(cx);
356// move |a, b| a.cmp(&b, &multibuffer)
357// });
358
359// let mut insertions = message.inserted_excerpts.into_iter().peekable();
360// while let Some(insertion) = insertions.next() {
361// let Some(excerpt) = insertion.excerpt else {
362// continue;
363// };
364// let Some(previous_excerpt_id) = insertion.previous_excerpt_id else {
365// continue;
366// };
367// let buffer_id = excerpt.buffer_id;
368// let Some(buffer) = project.read(cx).buffer_for_id(buffer_id) else {
369// continue;
370// };
371
372// let adjacent_excerpts = iter::from_fn(|| {
373// let insertion = insertions.peek()?;
374// if insertion.previous_excerpt_id.is_none()
375// && insertion.excerpt.as_ref()?.buffer_id == buffer_id
376// {
377// insertions.next()?.excerpt
378// } else {
379// None
380// }
381// });
382
383// multibuffer.insert_excerpts_with_ids_after(
384// ExcerptId::from_proto(previous_excerpt_id),
385// buffer,
386// [excerpt]
387// .into_iter()
388// .chain(adjacent_excerpts)
389// .filter_map(|excerpt| {
390// Some((
391// ExcerptId::from_proto(excerpt.id),
392// deserialize_excerpt_range(excerpt)?,
393// ))
394// }),
395// cx,
396// );
397// }
398
399// multibuffer.remove_excerpts(removed_excerpt_ids, cx);
400// });
401// })?;
402
403// // Deserialize the editor state.
404// let (selections, pending_selection, scroll_top_anchor) = this.update(cx, |editor, cx| {
405// let buffer = editor.buffer.read(cx).read(cx);
406// let selections = message
407// .selections
408// .into_iter()
409// .filter_map(|selection| deserialize_selection(&buffer, selection))
410// .collect::<Vec<_>>();
411// let pending_selection = message
412// .pending_selection
413// .and_then(|selection| deserialize_selection(&buffer, selection));
414// let scroll_top_anchor = message
415// .scroll_top_anchor
416// .and_then(|anchor| deserialize_anchor(&buffer, anchor));
417// anyhow::Ok((selections, pending_selection, scroll_top_anchor))
418// })??;
419
420// // Wait until the buffer has received all of the operations referenced by
421// // the editor's new state.
422// this.update(cx, |editor, cx| {
423// editor.buffer.update(cx, |buffer, cx| {
424// buffer.wait_for_anchors(
425// selections
426// .iter()
427// .chain(pending_selection.as_ref())
428// .flat_map(|selection| [selection.start, selection.end])
429// .chain(scroll_top_anchor),
430// cx,
431// )
432// })
433// })?
434// .await?;
435
436// // Update the editor's state.
437// this.update(cx, |editor, cx| {
438// if !selections.is_empty() || pending_selection.is_some() {
439// editor.set_selections_from_remote(selections, pending_selection, cx);
440// editor.request_autoscroll_remotely(Autoscroll::newest(), cx);
441// } else if let Some(scroll_top_anchor) = scroll_top_anchor {
442// editor.set_scroll_anchor_remote(
443// ScrollAnchor {
444// anchor: scroll_top_anchor,
445// offset: point(message.scroll_x, message.scroll_y),
446// },
447// cx,
448// );
449// }
450// })?;
451// Ok(())
452// }
453
454fn serialize_excerpt(
455 buffer_id: u64,
456 id: &ExcerptId,
457 range: &ExcerptRange<language::Anchor>,
458) -> Option<proto::Excerpt> {
459 Some(proto::Excerpt {
460 id: id.to_proto(),
461 buffer_id,
462 context_start: Some(serialize_text_anchor(&range.context.start)),
463 context_end: Some(serialize_text_anchor(&range.context.end)),
464 primary_start: range
465 .primary
466 .as_ref()
467 .map(|r| serialize_text_anchor(&r.start)),
468 primary_end: range
469 .primary
470 .as_ref()
471 .map(|r| serialize_text_anchor(&r.end)),
472 })
473}
474
475fn serialize_selection(selection: &Selection<Anchor>) -> proto::Selection {
476 proto::Selection {
477 id: selection.id as u64,
478 start: Some(serialize_anchor(&selection.start)),
479 end: Some(serialize_anchor(&selection.end)),
480 reversed: selection.reversed,
481 }
482}
483
484fn serialize_anchor(anchor: &Anchor) -> proto::EditorAnchor {
485 proto::EditorAnchor {
486 excerpt_id: anchor.excerpt_id.to_proto(),
487 anchor: Some(serialize_text_anchor(&anchor.text_anchor)),
488 }
489}
490
491fn deserialize_excerpt_range(excerpt: proto::Excerpt) -> Option<ExcerptRange<language::Anchor>> {
492 let context = {
493 let start = language::proto::deserialize_anchor(excerpt.context_start?)?;
494 let end = language::proto::deserialize_anchor(excerpt.context_end?)?;
495 start..end
496 };
497 let primary = excerpt
498 .primary_start
499 .zip(excerpt.primary_end)
500 .and_then(|(start, end)| {
501 let start = language::proto::deserialize_anchor(start)?;
502 let end = language::proto::deserialize_anchor(end)?;
503 Some(start..end)
504 });
505 Some(ExcerptRange { context, primary })
506}
507
508fn deserialize_selection(
509 buffer: &MultiBufferSnapshot,
510 selection: proto::Selection,
511) -> Option<Selection<Anchor>> {
512 Some(Selection {
513 id: selection.id as usize,
514 start: deserialize_anchor(buffer, selection.start?)?,
515 end: deserialize_anchor(buffer, selection.end?)?,
516 reversed: selection.reversed,
517 goal: SelectionGoal::None,
518 })
519}
520
521fn deserialize_anchor(buffer: &MultiBufferSnapshot, anchor: proto::EditorAnchor) -> Option<Anchor> {
522 let excerpt_id = ExcerptId::from_proto(anchor.excerpt_id);
523 Some(Anchor {
524 excerpt_id,
525 text_anchor: language::proto::deserialize_anchor(anchor.anchor?)?,
526 buffer_id: buffer.buffer_id_for_excerpt(excerpt_id),
527 })
528}
529
530impl Item for Editor {
531 fn navigate(&mut self, data: Box<dyn std::any::Any>, cx: &mut ViewContext<Self>) -> bool {
532 todo!();
533 // if let Ok(data) = data.downcast::<NavigationData>() {
534 // let newest_selection = self.selections.newest::<Point>(cx);
535 // let buffer = self.buffer.read(cx).read(cx);
536 // let offset = if buffer.can_resolve(&data.cursor_anchor) {
537 // data.cursor_anchor.to_point(&buffer)
538 // } else {
539 // buffer.clip_point(data.cursor_position, Bias::Left)
540 // };
541
542 // let mut scroll_anchor = data.scroll_anchor;
543 // if !buffer.can_resolve(&scroll_anchor.anchor) {
544 // scroll_anchor.anchor = buffer.anchor_before(
545 // buffer.clip_point(Point::new(data.scroll_top_row, 0), Bias::Left),
546 // );
547 // }
548
549 // drop(buffer);
550
551 // if newest_selection.head() == offset {
552 // false
553 // } else {
554 // let nav_history = self.nav_history.take();
555 // self.set_scroll_anchor(scroll_anchor, cx);
556 // self.change_selections(Some(Autoscroll::fit()), cx, |s| {
557 // s.select_ranges([offset..offset])
558 // });
559 // self.nav_history = nav_history;
560 // true
561 // }
562 // } else {
563 // false
564 // }
565 }
566
567 fn tab_tooltip_text(&self, cx: &AppContext) -> Option<SharedString> {
568 let file_path = self
569 .buffer()
570 .read(cx)
571 .as_singleton()?
572 .read(cx)
573 .file()
574 .and_then(|f| f.as_local())?
575 .abs_path(cx);
576
577 let file_path = file_path.compact().to_string_lossy().to_string();
578
579 Some(file_path.into())
580 }
581
582 fn tab_description<'a>(&self, detail: usize, cx: &'a AppContext) -> Option<SharedString> {
583 let path = path_for_buffer(&self.buffer, detail, true, cx)?;
584 Some(path.to_string_lossy().to_string().into())
585 }
586
587 fn tab_content(&self, detail: Option<usize>, cx: &WindowContext) -> AnyElement {
588 let theme = cx.theme();
589
590 AnyElement::new(
591 div()
592 .flex()
593 .flex_row()
594 .items_center()
595 .gap_2()
596 .child(Label::new(self.title(cx).to_string()))
597 .children(detail.and_then(|detail| {
598 let path = path_for_buffer(&self.buffer, detail, false, cx)?;
599 let description = path.to_string_lossy();
600
601 Some(
602 div().child(
603 Label::new(util::truncate_and_trailoff(
604 &description,
605 MAX_TAB_TITLE_LEN,
606 ))
607 .color(Color::Muted),
608 ),
609 )
610 })),
611 )
612 }
613
614 fn for_each_project_item(
615 &self,
616 cx: &AppContext,
617 f: &mut dyn FnMut(EntityId, &dyn project::Item),
618 ) {
619 self.buffer
620 .read(cx)
621 .for_each_buffer(|buffer| f(buffer.entity_id(), buffer.read(cx)));
622 }
623
624 fn is_singleton(&self, cx: &AppContext) -> bool {
625 self.buffer.read(cx).is_singleton()
626 }
627
628 fn clone_on_split(
629 &self,
630 _workspace_id: WorkspaceId,
631 cx: &mut ViewContext<Self>,
632 ) -> Option<View<Editor>>
633 where
634 Self: Sized,
635 {
636 Some(cx.build_view(|cx| self.clone(cx)))
637 }
638
639 fn set_nav_history(&mut self, history: ItemNavHistory, _: &mut ViewContext<Self>) {
640 self.nav_history = Some(history);
641 }
642
643 fn deactivated(&mut self, cx: &mut ViewContext<Self>) {
644 let selection = self.selections.newest_anchor();
645 self.push_to_nav_history(selection.head(), None, cx);
646 }
647
648 fn workspace_deactivated(&mut self, cx: &mut ViewContext<Self>) {
649 hide_link_definition(self, cx);
650 self.link_go_to_definition_state.last_trigger_point = None;
651 }
652
653 fn is_dirty(&self, cx: &AppContext) -> bool {
654 self.buffer().read(cx).read(cx).is_dirty()
655 }
656
657 fn has_conflict(&self, cx: &AppContext) -> bool {
658 self.buffer().read(cx).read(cx).has_conflict()
659 }
660
661 fn can_save(&self, cx: &AppContext) -> bool {
662 let buffer = &self.buffer().read(cx);
663 if let Some(buffer) = buffer.as_singleton() {
664 buffer.read(cx).project_path(cx).is_some()
665 } else {
666 true
667 }
668 }
669
670 fn save(&mut self, project: Model<Project>, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
671 self.report_editor_event("save", None, cx);
672 let format = self.perform_format(project.clone(), FormatTrigger::Save, cx);
673 let buffers = self.buffer().clone().read(cx).all_buffers();
674 cx.spawn(|_, mut cx| async move {
675 format.await?;
676
677 if buffers.len() == 1 {
678 project
679 .update(&mut cx, |project, cx| project.save_buffers(buffers, cx))?
680 .await?;
681 } else {
682 // For multi-buffers, only save those ones that contain changes. For clean buffers
683 // we simulate saving by calling `Buffer::did_save`, so that language servers or
684 // other downstream listeners of save events get notified.
685 let (dirty_buffers, clean_buffers) = buffers.into_iter().partition(|buffer| {
686 buffer
687 .update(&mut cx, |buffer, _| {
688 buffer.is_dirty() || buffer.has_conflict()
689 })
690 .unwrap_or(false)
691 });
692
693 project
694 .update(&mut cx, |project, cx| {
695 project.save_buffers(dirty_buffers, cx)
696 })?
697 .await?;
698 for buffer in clean_buffers {
699 buffer.update(&mut cx, |buffer, cx| {
700 let version = buffer.saved_version().clone();
701 let fingerprint = buffer.saved_version_fingerprint();
702 let mtime = buffer.saved_mtime();
703 buffer.did_save(version, fingerprint, mtime, cx);
704 });
705 }
706 }
707
708 Ok(())
709 })
710 }
711
712 fn save_as(
713 &mut self,
714 project: Model<Project>,
715 abs_path: PathBuf,
716 cx: &mut ViewContext<Self>,
717 ) -> Task<Result<()>> {
718 let buffer = self
719 .buffer()
720 .read(cx)
721 .as_singleton()
722 .expect("cannot call save_as on an excerpt list");
723
724 let file_extension = abs_path
725 .extension()
726 .map(|a| a.to_string_lossy().to_string());
727 self.report_editor_event("save", file_extension, cx);
728
729 project.update(cx, |project, cx| {
730 project.save_buffer_as(buffer, abs_path, cx)
731 })
732 }
733
734 fn reload(&mut self, project: Model<Project>, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
735 let buffer = self.buffer().clone();
736 let buffers = self.buffer.read(cx).all_buffers();
737 let reload_buffers =
738 project.update(cx, |project, cx| project.reload_buffers(buffers, true, cx));
739 cx.spawn(|this, mut cx| async move {
740 let transaction = reload_buffers.log_err().await;
741 this.update(&mut cx, |editor, cx| {
742 editor.request_autoscroll(Autoscroll::fit(), cx)
743 })?;
744 buffer.update(&mut cx, |buffer, cx| {
745 if let Some(transaction) = transaction {
746 if !buffer.is_singleton() {
747 buffer.push_transaction(&transaction.0, cx);
748 }
749 }
750 });
751 Ok(())
752 })
753 }
754
755 fn as_searchable(&self, handle: &View<Self>) -> Option<Box<dyn SearchableItemHandle>> {
756 Some(Box::new(handle.clone()))
757 }
758
759 fn pixel_position_of_cursor(&self, _: &AppContext) -> Option<gpui::Point<Pixels>> {
760 self.pixel_position_of_newest_cursor
761 }
762
763 fn breadcrumb_location(&self) -> ToolbarItemLocation {
764 ToolbarItemLocation::PrimaryLeft
765 }
766
767 fn breadcrumbs(&self, variant: &Theme, cx: &AppContext) -> Option<Vec<BreadcrumbText>> {
768 let cursor = self.selections.newest_anchor().head();
769 let multibuffer = &self.buffer().read(cx);
770 let (buffer_id, symbols) =
771 multibuffer.symbols_containing(cursor, Some(&cx.theme().styles.syntax), cx)?;
772 let buffer = multibuffer.buffer(buffer_id)?;
773
774 let buffer = buffer.read(cx);
775 let filename = buffer
776 .snapshot()
777 .resolve_file_path(
778 cx,
779 self.project
780 .as_ref()
781 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
782 .unwrap_or_default(),
783 )
784 .map(|path| path.to_string_lossy().to_string())
785 .unwrap_or_else(|| "untitled".to_string());
786
787 let mut breadcrumbs = vec![BreadcrumbText {
788 text: filename,
789 highlights: None,
790 }];
791 breadcrumbs.extend(symbols.into_iter().map(|symbol| {
792 // eprintln!(
793 // "ranges: {:?}",
794 // symbol
795 // .highlight_ranges
796 // .iter()
797 // .map(|range| &symbol.text[range.0.clone()])
798 // .collect::<Vec<_>>()
799 // );
800 BreadcrumbText {
801 text: symbol.text,
802 highlights: Some(symbol.highlight_ranges),
803 }
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().item_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().item_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
912impl EventEmitter<SearchEvent> for Editor {}
913
914pub(crate) enum BufferSearchHighlights {}
915impl SearchableItem for Editor {
916 type Match = Range<Anchor>;
917
918 fn clear_matches(&mut self, cx: &mut ViewContext<Self>) {
919 self.clear_background_highlights::<BufferSearchHighlights>(cx);
920 }
921
922 fn update_matches(&mut self, matches: Vec<Range<Anchor>>, cx: &mut ViewContext<Self>) {
923 self.highlight_background::<BufferSearchHighlights>(
924 matches,
925 |theme| theme.title_bar_background, // todo: update theme
926 cx,
927 );
928 }
929
930 fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> String {
931 let setting = EditorSettings::get_global(cx).seed_search_query_from_cursor;
932 let snapshot = &self.snapshot(cx).buffer_snapshot;
933 let selection = self.selections.newest::<usize>(cx);
934
935 match setting {
936 SeedQuerySetting::Never => String::new(),
937 SeedQuerySetting::Selection | SeedQuerySetting::Always if !selection.is_empty() => {
938 snapshot
939 .text_for_range(selection.start..selection.end)
940 .collect()
941 }
942 SeedQuerySetting::Selection => String::new(),
943 SeedQuerySetting::Always => {
944 let (range, kind) = snapshot.surrounding_word(selection.start);
945 if kind == Some(CharKind::Word) {
946 let text: String = snapshot.text_for_range(range).collect();
947 if !text.trim().is_empty() {
948 return text;
949 }
950 }
951 String::new()
952 }
953 }
954 }
955
956 fn activate_match(
957 &mut self,
958 index: usize,
959 matches: Vec<Range<Anchor>>,
960 cx: &mut ViewContext<Self>,
961 ) {
962 self.unfold_ranges([matches[index].clone()], false, true, cx);
963 let range = self.range_for_match(&matches[index]);
964 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
965 s.select_ranges([range]);
966 })
967 }
968
969 fn select_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>) {
970 self.unfold_ranges(matches.clone(), false, false, cx);
971 let mut ranges = Vec::new();
972 for m in &matches {
973 ranges.push(self.range_for_match(&m))
974 }
975 self.change_selections(None, cx, |s| s.select_ranges(ranges));
976 }
977 fn replace(
978 &mut self,
979 identifier: &Self::Match,
980 query: &SearchQuery,
981 cx: &mut ViewContext<Self>,
982 ) {
983 let text = self.buffer.read(cx);
984 let text = text.snapshot(cx);
985 let text = text.text_for_range(identifier.clone()).collect::<Vec<_>>();
986 let text: Cow<_> = if text.len() == 1 {
987 text.first().cloned().unwrap().into()
988 } else {
989 let joined_chunks = text.join("");
990 joined_chunks.into()
991 };
992
993 if let Some(replacement) = query.replacement_for(&text) {
994 self.transact(cx, |this, cx| {
995 this.edit([(identifier.clone(), Arc::from(&*replacement))], cx);
996 });
997 }
998 }
999 fn match_index_for_direction(
1000 &mut self,
1001 matches: &Vec<Range<Anchor>>,
1002 current_index: usize,
1003 direction: Direction,
1004 count: usize,
1005 cx: &mut ViewContext<Self>,
1006 ) -> usize {
1007 let buffer = self.buffer().read(cx).snapshot(cx);
1008 let current_index_position = if self.selections.disjoint_anchors().len() == 1 {
1009 self.selections.newest_anchor().head()
1010 } else {
1011 matches[current_index].start
1012 };
1013
1014 let mut count = count % matches.len();
1015 if count == 0 {
1016 return current_index;
1017 }
1018 match direction {
1019 Direction::Next => {
1020 if matches[current_index]
1021 .start
1022 .cmp(¤t_index_position, &buffer)
1023 .is_gt()
1024 {
1025 count = count - 1
1026 }
1027
1028 (current_index + count) % matches.len()
1029 }
1030 Direction::Prev => {
1031 if matches[current_index]
1032 .end
1033 .cmp(¤t_index_position, &buffer)
1034 .is_lt()
1035 {
1036 count = count - 1;
1037 }
1038
1039 if current_index >= count {
1040 current_index - count
1041 } else {
1042 matches.len() - (count - current_index)
1043 }
1044 }
1045 }
1046 }
1047
1048 fn find_matches(
1049 &mut self,
1050 query: Arc<project::search::SearchQuery>,
1051 cx: &mut ViewContext<Self>,
1052 ) -> Task<Vec<Range<Anchor>>> {
1053 let buffer = self.buffer().read(cx).snapshot(cx);
1054 cx.background_executor().spawn(async move {
1055 let mut ranges = Vec::new();
1056 if let Some((_, _, excerpt_buffer)) = buffer.as_singleton() {
1057 ranges.extend(
1058 query
1059 .search(excerpt_buffer, None)
1060 .await
1061 .into_iter()
1062 .map(|range| {
1063 buffer.anchor_after(range.start)..buffer.anchor_before(range.end)
1064 }),
1065 );
1066 } else {
1067 for excerpt in buffer.excerpt_boundaries_in_range(0..buffer.len()) {
1068 let excerpt_range = excerpt.range.context.to_offset(&excerpt.buffer);
1069 ranges.extend(
1070 query
1071 .search(&excerpt.buffer, Some(excerpt_range.clone()))
1072 .await
1073 .into_iter()
1074 .map(|range| {
1075 let start = excerpt
1076 .buffer
1077 .anchor_after(excerpt_range.start + range.start);
1078 let end = excerpt
1079 .buffer
1080 .anchor_before(excerpt_range.start + range.end);
1081 buffer.anchor_in_excerpt(excerpt.id.clone(), start)
1082 ..buffer.anchor_in_excerpt(excerpt.id.clone(), end)
1083 }),
1084 );
1085 }
1086 }
1087 ranges
1088 })
1089 }
1090
1091 fn active_match_index(
1092 &mut self,
1093 matches: Vec<Range<Anchor>>,
1094 cx: &mut ViewContext<Self>,
1095 ) -> Option<usize> {
1096 active_match_index(
1097 &matches,
1098 &self.selections.newest_anchor().head(),
1099 &self.buffer().read(cx).snapshot(cx),
1100 )
1101 }
1102}
1103
1104pub fn active_match_index(
1105 ranges: &[Range<Anchor>],
1106 cursor: &Anchor,
1107 buffer: &MultiBufferSnapshot,
1108) -> Option<usize> {
1109 if ranges.is_empty() {
1110 None
1111 } else {
1112 match ranges.binary_search_by(|probe| {
1113 if probe.end.cmp(cursor, &*buffer).is_lt() {
1114 Ordering::Less
1115 } else if probe.start.cmp(cursor, &*buffer).is_gt() {
1116 Ordering::Greater
1117 } else {
1118 Ordering::Equal
1119 }
1120 }) {
1121 Ok(i) | Err(i) => Some(cmp::min(i, ranges.len() - 1)),
1122 }
1123 }
1124}
1125
1126pub struct CursorPosition {
1127 position: Option<Point>,
1128 selected_count: usize,
1129 _observe_active_editor: Option<Subscription>,
1130}
1131
1132// impl Default for CursorPosition {
1133// fn default() -> Self {
1134// Self::new()
1135// }
1136// }
1137
1138// impl CursorPosition {
1139// pub fn new() -> Self {
1140// Self {
1141// position: None,
1142// selected_count: 0,
1143// _observe_active_editor: None,
1144// }
1145// }
1146
1147// fn update_position(&mut self, editor: View<Editor>, cx: &mut ViewContext<Self>) {
1148// let editor = editor.read(cx);
1149// let buffer = editor.buffer().read(cx).snapshot(cx);
1150
1151// self.selected_count = 0;
1152// let mut last_selection: Option<Selection<usize>> = None;
1153// for selection in editor.selections.all::<usize>(cx) {
1154// self.selected_count += selection.end - selection.start;
1155// if last_selection
1156// .as_ref()
1157// .map_or(true, |last_selection| selection.id > last_selection.id)
1158// {
1159// last_selection = Some(selection);
1160// }
1161// }
1162// self.position = last_selection.map(|s| s.head().to_point(&buffer));
1163
1164// cx.notify();
1165// }
1166// }
1167
1168// impl Entity for CursorPosition {
1169// type Event = ();
1170// }
1171
1172// impl View for CursorPosition {
1173// fn ui_name() -> &'static str {
1174// "CursorPosition"
1175// }
1176
1177// fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
1178// if let Some(position) = self.position {
1179// let theme = &theme::current(cx).workspace.status_bar;
1180// let mut text = format!(
1181// "{}{FILE_ROW_COLUMN_DELIMITER}{}",
1182// position.row + 1,
1183// position.column + 1
1184// );
1185// if self.selected_count > 0 {
1186// write!(text, " ({} selected)", self.selected_count).unwrap();
1187// }
1188// Label::new(text, theme.cursor_position.clone()).into_any()
1189// } else {
1190// Empty::new().into_any()
1191// }
1192// }
1193// }
1194
1195// impl StatusItemView for CursorPosition {
1196// fn set_active_pane_item(
1197// &mut self,
1198// active_pane_item: Option<&dyn ItemHandle>,
1199// cx: &mut ViewContext<Self>,
1200// ) {
1201// if let Some(editor) = active_pane_item.and_then(|item| item.act_as::<Editor>(cx)) {
1202// self._observe_active_editor = Some(cx.observe(&editor, Self::update_position));
1203// self.update_position(editor, cx);
1204// } else {
1205// self.position = None;
1206// self._observe_active_editor = None;
1207// }
1208
1209// cx.notify();
1210// }
1211// }
1212
1213fn path_for_buffer<'a>(
1214 buffer: &Model<MultiBuffer>,
1215 height: usize,
1216 include_filename: bool,
1217 cx: &'a AppContext,
1218) -> Option<Cow<'a, Path>> {
1219 let file = buffer.read(cx).as_singleton()?.read(cx).file()?;
1220 path_for_file(file.as_ref(), height, include_filename, cx)
1221}
1222
1223fn path_for_file<'a>(
1224 file: &'a dyn language::File,
1225 mut height: usize,
1226 include_filename: bool,
1227 cx: &'a AppContext,
1228) -> Option<Cow<'a, Path>> {
1229 // Ensure we always render at least the filename.
1230 height += 1;
1231
1232 let mut prefix = file.path().as_ref();
1233 while height > 0 {
1234 if let Some(parent) = prefix.parent() {
1235 prefix = parent;
1236 height -= 1;
1237 } else {
1238 break;
1239 }
1240 }
1241
1242 // Here we could have just always used `full_path`, but that is very
1243 // allocation-heavy and so we try to use a `Cow<Path>` if we haven't
1244 // traversed all the way up to the worktree's root.
1245 if height > 0 {
1246 let full_path = file.full_path(cx);
1247 if include_filename {
1248 Some(full_path.into())
1249 } else {
1250 Some(full_path.parent()?.to_path_buf().into())
1251 }
1252 } else {
1253 let mut path = file.path().strip_prefix(prefix).ok()?;
1254 if !include_filename {
1255 path = path.parent()?;
1256 }
1257 Some(path.into())
1258 }
1259}
1260
1261#[cfg(test)]
1262mod tests {
1263 use super::*;
1264 use gpui::AppContext;
1265 use std::{
1266 path::{Path, PathBuf},
1267 sync::Arc,
1268 time::SystemTime,
1269 };
1270
1271 #[gpui::test]
1272 fn test_path_for_file(cx: &mut AppContext) {
1273 let file = TestFile {
1274 path: Path::new("").into(),
1275 full_path: PathBuf::from(""),
1276 };
1277 assert_eq!(path_for_file(&file, 0, false, cx), None);
1278 }
1279
1280 struct TestFile {
1281 path: Arc<Path>,
1282 full_path: PathBuf,
1283 }
1284
1285 impl language::File for TestFile {
1286 fn path(&self) -> &Arc<Path> {
1287 &self.path
1288 }
1289
1290 fn full_path(&self, _: &gpui::AppContext) -> PathBuf {
1291 self.full_path.clone()
1292 }
1293
1294 fn as_local(&self) -> Option<&dyn language::LocalFile> {
1295 unimplemented!()
1296 }
1297
1298 fn mtime(&self) -> SystemTime {
1299 unimplemented!()
1300 }
1301
1302 fn file_name<'a>(&'a self, _: &'a gpui::AppContext) -> &'a std::ffi::OsStr {
1303 unimplemented!()
1304 }
1305
1306 fn worktree_id(&self) -> usize {
1307 0
1308 }
1309
1310 fn is_deleted(&self) -> bool {
1311 unimplemented!()
1312 }
1313
1314 fn as_any(&self) -> &dyn std::any::Any {
1315 unimplemented!()
1316 }
1317
1318 fn to_proto(&self) -> rpc::proto::File {
1319 unimplemented!()
1320 }
1321 }
1322}