1use anyhow::Context as _;
2use fuzzy::StringMatchCandidate;
3
4use collections::HashSet;
5use git::repository::Branch;
6use gpui::{
7 App, Context, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable, InteractiveElement,
8 IntoElement, Modifiers, ModifiersChangedEvent, ParentElement, Render, SharedString, Styled,
9 Subscription, Task, Window, rems,
10};
11use picker::{Picker, PickerDelegate, PickerEditorPosition};
12use project::git_store::Repository;
13use std::sync::Arc;
14use time::OffsetDateTime;
15use time_format::format_local_timestamp;
16use ui::{HighlightedLabel, ListItem, ListItemSpacing, Tooltip, prelude::*};
17use util::ResultExt;
18use workspace::notifications::DetachAndPromptErr;
19use workspace::{ModalView, Workspace};
20
21pub fn register(workspace: &mut Workspace) {
22 workspace.register_action(open);
23 workspace.register_action(switch);
24 workspace.register_action(checkout_branch);
25}
26
27pub fn checkout_branch(
28 workspace: &mut Workspace,
29 _: &zed_actions::git::CheckoutBranch,
30 window: &mut Window,
31 cx: &mut Context<Workspace>,
32) {
33 open(workspace, &zed_actions::git::Branch, window, cx);
34}
35
36pub fn switch(
37 workspace: &mut Workspace,
38 _: &zed_actions::git::Switch,
39 window: &mut Window,
40 cx: &mut Context<Workspace>,
41) {
42 open(workspace, &zed_actions::git::Branch, window, cx);
43}
44
45pub fn open(
46 workspace: &mut Workspace,
47 _: &zed_actions::git::Branch,
48 window: &mut Window,
49 cx: &mut Context<Workspace>,
50) {
51 let repository = workspace.project().read(cx).active_repository(cx);
52 let style = BranchListStyle::Modal;
53 workspace.toggle_modal(window, cx, |window, cx| {
54 BranchList::new(repository, style, rems(34.), window, cx)
55 })
56}
57
58pub fn popover(
59 repository: Option<Entity<Repository>>,
60 window: &mut Window,
61 cx: &mut App,
62) -> Entity<BranchList> {
63 cx.new(|cx| {
64 let list = BranchList::new(repository, BranchListStyle::Popover, rems(20.), window, cx);
65 list.focus_handle(cx).focus(window);
66 list
67 })
68}
69
70#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
71enum BranchListStyle {
72 Modal,
73 Popover,
74}
75
76pub struct BranchList {
77 width: Rems,
78 pub picker: Entity<Picker<BranchListDelegate>>,
79 _subscription: Subscription,
80}
81
82impl BranchList {
83 fn new(
84 repository: Option<Entity<Repository>>,
85 style: BranchListStyle,
86 width: Rems,
87 window: &mut Window,
88 cx: &mut Context<Self>,
89 ) -> Self {
90 let all_branches_request = repository
91 .clone()
92 .map(|repository| repository.update(cx, |repository, _| repository.branches()));
93 let default_branch_request = repository
94 .clone()
95 .map(|repository| repository.update(cx, |repository, _| repository.default_branch()));
96
97 cx.spawn_in(window, async move |this, cx| {
98 let mut all_branches = all_branches_request
99 .context("No active repository")?
100 .await??;
101 let default_branch = default_branch_request
102 .context("No active repository")?
103 .await
104 .map(Result::ok)
105 .ok()
106 .flatten()
107 .flatten();
108
109 let all_branches = cx
110 .background_spawn(async move {
111 let remote_upstreams: HashSet<_> = all_branches
112 .iter()
113 .filter_map(|branch| {
114 branch
115 .upstream
116 .as_ref()
117 .filter(|upstream| upstream.is_remote())
118 .map(|upstream| upstream.ref_name.clone())
119 })
120 .collect();
121
122 all_branches.retain(|branch| !remote_upstreams.contains(&branch.ref_name));
123
124 all_branches.sort_by_key(|branch| {
125 branch
126 .most_recent_commit
127 .as_ref()
128 .map(|commit| 0 - commit.commit_timestamp)
129 });
130
131 all_branches
132 })
133 .await;
134
135 this.update_in(cx, |this, window, cx| {
136 this.picker.update(cx, |picker, cx| {
137 picker.delegate.default_branch = default_branch;
138 picker.delegate.all_branches = Some(all_branches);
139 picker.refresh(window, cx);
140 })
141 })?;
142
143 anyhow::Ok(())
144 })
145 .detach_and_log_err(cx);
146
147 let delegate = BranchListDelegate::new(repository, style);
148 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
149
150 let _subscription = cx.subscribe(&picker, |_, _, _, cx| {
151 cx.emit(DismissEvent);
152 });
153
154 Self {
155 picker,
156 width,
157 _subscription,
158 }
159 }
160
161 fn handle_modifiers_changed(
162 &mut self,
163 ev: &ModifiersChangedEvent,
164 _: &mut Window,
165 cx: &mut Context<Self>,
166 ) {
167 self.picker
168 .update(cx, |picker, _| picker.delegate.modifiers = ev.modifiers)
169 }
170}
171impl ModalView for BranchList {}
172impl EventEmitter<DismissEvent> for BranchList {}
173
174impl Focusable for BranchList {
175 fn focus_handle(&self, cx: &App) -> FocusHandle {
176 self.picker.focus_handle(cx)
177 }
178}
179
180impl Render for BranchList {
181 fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
182 v_flex()
183 .key_context("GitBranchSelector")
184 .w(self.width)
185 .on_modifiers_changed(cx.listener(Self::handle_modifiers_changed))
186 .child(self.picker.clone())
187 .on_mouse_down_out({
188 cx.listener(move |this, _, window, cx| {
189 this.picker.update(cx, |this, cx| {
190 this.cancel(&Default::default(), window, cx);
191 })
192 })
193 })
194 }
195}
196
197#[derive(Debug, Clone)]
198struct BranchEntry {
199 branch: Branch,
200 positions: Vec<usize>,
201 is_new: bool,
202}
203
204pub struct BranchListDelegate {
205 matches: Vec<BranchEntry>,
206 all_branches: Option<Vec<Branch>>,
207 default_branch: Option<SharedString>,
208 repo: Option<Entity<Repository>>,
209 style: BranchListStyle,
210 selected_index: usize,
211 last_query: String,
212 modifiers: Modifiers,
213}
214
215impl BranchListDelegate {
216 fn new(repo: Option<Entity<Repository>>, style: BranchListStyle) -> Self {
217 Self {
218 matches: vec![],
219 repo,
220 style,
221 all_branches: None,
222 default_branch: None,
223 selected_index: 0,
224 last_query: Default::default(),
225 modifiers: Default::default(),
226 }
227 }
228
229 fn create_branch(
230 &self,
231 from_branch: Option<SharedString>,
232 new_branch_name: SharedString,
233 window: &mut Window,
234 cx: &mut Context<Picker<Self>>,
235 ) {
236 let Some(repo) = self.repo.clone() else {
237 return;
238 };
239 let new_branch_name = new_branch_name.to_string().replace(' ', "-");
240 cx.spawn(async move |_, cx| {
241 if let Some(based_branch) = from_branch {
242 repo.update(cx, |repo, _| repo.change_branch(based_branch.to_string()))?
243 .await??;
244 }
245
246 repo.update(cx, |repo, _| {
247 repo.create_branch(new_branch_name.to_string())
248 })?
249 .await??;
250 repo.update(cx, |repo, _| {
251 repo.change_branch(new_branch_name.to_string())
252 })?
253 .await??;
254
255 Ok(())
256 })
257 .detach_and_prompt_err("Failed to create branch", window, cx, |e, _, _| {
258 Some(e.to_string())
259 });
260 cx.emit(DismissEvent);
261 }
262}
263
264impl PickerDelegate for BranchListDelegate {
265 type ListItem = ListItem;
266
267 fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
268 "Select branch…".into()
269 }
270
271 fn editor_position(&self) -> PickerEditorPosition {
272 match self.style {
273 BranchListStyle::Modal => PickerEditorPosition::Start,
274 BranchListStyle::Popover => PickerEditorPosition::End,
275 }
276 }
277
278 fn match_count(&self) -> usize {
279 self.matches.len()
280 }
281
282 fn selected_index(&self) -> usize {
283 self.selected_index
284 }
285
286 fn set_selected_index(
287 &mut self,
288 ix: usize,
289 _window: &mut Window,
290 _: &mut Context<Picker<Self>>,
291 ) {
292 self.selected_index = ix;
293 }
294
295 fn update_matches(
296 &mut self,
297 query: String,
298 window: &mut Window,
299 cx: &mut Context<Picker<Self>>,
300 ) -> Task<()> {
301 let Some(all_branches) = self.all_branches.clone() else {
302 return Task::ready(());
303 };
304
305 const RECENT_BRANCHES_COUNT: usize = 10;
306 cx.spawn_in(window, async move |picker, cx| {
307 let mut matches: Vec<BranchEntry> = if query.is_empty() {
308 all_branches
309 .into_iter()
310 .filter(|branch| !branch.is_remote())
311 .take(RECENT_BRANCHES_COUNT)
312 .map(|branch| BranchEntry {
313 branch,
314 positions: Vec::new(),
315 is_new: false,
316 })
317 .collect()
318 } else {
319 let candidates = all_branches
320 .iter()
321 .enumerate()
322 .map(|(ix, branch)| StringMatchCandidate::new(ix, branch.name()))
323 .collect::<Vec<StringMatchCandidate>>();
324 fuzzy::match_strings(
325 &candidates,
326 &query,
327 true,
328 true,
329 10000,
330 &Default::default(),
331 cx.background_executor().clone(),
332 )
333 .await
334 .into_iter()
335 .map(|candidate| BranchEntry {
336 branch: all_branches[candidate.candidate_id].clone(),
337 positions: candidate.positions,
338 is_new: false,
339 })
340 .collect()
341 };
342 picker
343 .update(cx, |picker, _| {
344 #[allow(clippy::nonminimal_bool)]
345 if !query.is_empty()
346 && !matches
347 .first()
348 .is_some_and(|entry| entry.branch.name() == query)
349 {
350 let query = query.replace(' ', "-");
351 matches.push(BranchEntry {
352 branch: Branch {
353 ref_name: format!("refs/heads/{query}").into(),
354 is_head: false,
355 upstream: None,
356 most_recent_commit: None,
357 },
358 positions: Vec::new(),
359 is_new: true,
360 })
361 }
362 let delegate = &mut picker.delegate;
363 delegate.matches = matches;
364 if delegate.matches.is_empty() {
365 delegate.selected_index = 0;
366 } else {
367 delegate.selected_index =
368 core::cmp::min(delegate.selected_index, delegate.matches.len() - 1);
369 }
370 delegate.last_query = query;
371 })
372 .log_err();
373 })
374 }
375
376 fn confirm(&mut self, secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
377 let Some(entry) = self.matches.get(self.selected_index()) else {
378 return;
379 };
380 if entry.is_new {
381 let from_branch = if secondary {
382 self.default_branch.clone()
383 } else {
384 None
385 };
386 self.create_branch(
387 from_branch,
388 entry.branch.name().to_owned().into(),
389 window,
390 cx,
391 );
392 return;
393 }
394
395 let current_branch = self.repo.as_ref().map(|repo| {
396 repo.read_with(cx, |repo, _| {
397 repo.branch.as_ref().map(|branch| branch.ref_name.clone())
398 })
399 });
400
401 if current_branch
402 .flatten()
403 .is_some_and(|current_branch| current_branch == entry.branch.ref_name)
404 {
405 cx.emit(DismissEvent);
406 return;
407 }
408
409 cx.spawn_in(window, {
410 let branch = entry.branch.clone();
411 async move |picker, cx| {
412 let branch_change_task = picker.update(cx, |this, cx| {
413 let repo = this
414 .delegate
415 .repo
416 .as_ref()
417 .context("No active repository")?
418 .clone();
419
420 let mut cx = cx.to_async();
421
422 anyhow::Ok(async move {
423 repo.update(&mut cx, |repo, _| {
424 repo.change_branch(branch.name().to_string())
425 })?
426 .await?
427 })
428 })??;
429
430 branch_change_task.await?;
431
432 picker.update(cx, |_, cx| {
433 cx.emit(DismissEvent);
434
435 anyhow::Ok(())
436 })
437 }
438 })
439 .detach_and_prompt_err("Failed to change branch", window, cx, |_, _, _| None);
440 }
441
442 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<Self>>) {
443 cx.emit(DismissEvent);
444 }
445
446 fn render_match(
447 &self,
448 ix: usize,
449 selected: bool,
450 _window: &mut Window,
451 cx: &mut Context<Picker<Self>>,
452 ) -> Option<Self::ListItem> {
453 let entry = &self.matches[ix];
454
455 let (commit_time, subject) = entry
456 .branch
457 .most_recent_commit
458 .as_ref()
459 .map(|commit| {
460 let subject = commit.subject.clone();
461 let commit_time = OffsetDateTime::from_unix_timestamp(commit.commit_timestamp)
462 .unwrap_or_else(|_| OffsetDateTime::now_utc());
463 let formatted_time = format_local_timestamp(
464 commit_time,
465 OffsetDateTime::now_utc(),
466 time_format::TimestampFormat::Relative,
467 );
468 (Some(formatted_time), Some(subject))
469 })
470 .unwrap_or_else(|| (None, None));
471
472 let icon = if let Some(default_branch) = self.default_branch.clone()
473 && entry.is_new
474 {
475 Some(
476 IconButton::new("branch-from-default", IconName::GitBranchAlt)
477 .on_click(cx.listener(move |this, _, window, cx| {
478 this.delegate.set_selected_index(ix, window, cx);
479 this.delegate.confirm(true, window, cx);
480 }))
481 .tooltip(move |window, cx| {
482 Tooltip::for_action(
483 format!("Create branch based off default: {default_branch}"),
484 &menu::SecondaryConfirm,
485 window,
486 cx,
487 )
488 }),
489 )
490 } else {
491 None
492 };
493
494 let branch_name = if entry.is_new {
495 h_flex()
496 .gap_1()
497 .child(
498 Icon::new(IconName::Plus)
499 .size(IconSize::Small)
500 .color(Color::Muted),
501 )
502 .child(
503 Label::new(format!("Create branch \"{}\"…", entry.branch.name()))
504 .single_line()
505 .truncate(),
506 )
507 .into_any_element()
508 } else {
509 HighlightedLabel::new(entry.branch.name().to_owned(), entry.positions.clone())
510 .truncate()
511 .into_any_element()
512 };
513
514 Some(
515 ListItem::new(SharedString::from(format!("vcs-menu-{ix}")))
516 .inset(true)
517 .spacing(ListItemSpacing::Sparse)
518 .toggle_state(selected)
519 .child(
520 v_flex()
521 .w_full()
522 .overflow_hidden()
523 .child(
524 h_flex()
525 .gap_6()
526 .justify_between()
527 .overflow_x_hidden()
528 .child(branch_name)
529 .when_some(commit_time, |label, commit_time| {
530 label.child(
531 Label::new(commit_time)
532 .size(LabelSize::Small)
533 .color(Color::Muted)
534 .into_element(),
535 )
536 }),
537 )
538 .when(self.style == BranchListStyle::Modal, |el| {
539 el.child(div().max_w_96().child({
540 let message = if entry.is_new {
541 if let Some(current_branch) =
542 self.repo.as_ref().and_then(|repo| {
543 repo.read(cx).branch.as_ref().map(|b| b.name())
544 })
545 {
546 format!("based off {}", current_branch)
547 } else {
548 "based off the current branch".to_string()
549 }
550 } else {
551 subject.unwrap_or("no commits found".into()).to_string()
552 };
553 Label::new(message)
554 .size(LabelSize::Small)
555 .truncate()
556 .color(Color::Muted)
557 }))
558 }),
559 )
560 .end_slot::<IconButton>(icon),
561 )
562 }
563
564 fn no_matches_text(&self, _window: &mut Window, _cx: &mut App) -> Option<SharedString> {
565 None
566 }
567}