1#[cfg(test)]
2mod file_finder_tests;
3#[cfg(test)]
4mod open_path_prompt_tests;
5
6pub mod file_finder_settings;
7mod new_path_prompt;
8mod open_path_prompt;
9
10use futures::future::join_all;
11pub use open_path_prompt::OpenPathDelegate;
12
13use collections::HashMap;
14use editor::Editor;
15use file_finder_settings::{FileFinderSettings, FileFinderWidth};
16use file_icons::FileIcons;
17use fuzzy::{CharBag, PathMatch, PathMatchCandidate};
18use gpui::{
19 Action, AnyElement, App, Context, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable,
20 KeyContext, Modifiers, ModifiersChangedEvent, ParentElement, Render, Styled, Task, WeakEntity,
21 Window, actions,
22};
23use new_path_prompt::NewPathPrompt;
24use open_path_prompt::OpenPathPrompt;
25use picker::{Picker, PickerDelegate};
26use project::{PathMatchCandidateSet, Project, ProjectPath, WorktreeId};
27use settings::Settings;
28use std::{
29 borrow::Cow,
30 cmp,
31 ops::Range,
32 path::{Component, Path, PathBuf},
33 sync::{
34 Arc,
35 atomic::{self, AtomicBool},
36 },
37};
38use text::Point;
39use ui::{
40 ContextMenu, HighlightedLabel, ListItem, ListItemSpacing, PopoverMenu, PopoverMenuHandle,
41 prelude::*,
42};
43use util::{ResultExt, maybe, paths::PathWithPosition, post_inc};
44use workspace::{
45 ModalView, OpenOptions, OpenVisible, SplitDirection, Workspace, item::PreviewTabsSettings,
46 notifications::NotifyResultExt, pane,
47};
48
49actions!(file_finder, [SelectPrevious, ToggleMenu]);
50
51impl ModalView for FileFinder {
52 fn on_before_dismiss(
53 &mut self,
54 window: &mut Window,
55 cx: &mut Context<Self>,
56 ) -> workspace::DismissDecision {
57 let submenu_focused = self.picker.update(cx, |picker, cx| {
58 picker.delegate.popover_menu_handle.is_focused(window, cx)
59 });
60 workspace::DismissDecision::Dismiss(!submenu_focused)
61 }
62}
63
64pub struct FileFinder {
65 picker: Entity<Picker<FileFinderDelegate>>,
66 picker_focus_handle: FocusHandle,
67 init_modifiers: Option<Modifiers>,
68}
69
70pub fn init_settings(cx: &mut App) {
71 FileFinderSettings::register(cx);
72}
73
74pub fn init(cx: &mut App) {
75 init_settings(cx);
76 cx.observe_new(FileFinder::register).detach();
77 cx.observe_new(NewPathPrompt::register).detach();
78 cx.observe_new(OpenPathPrompt::register).detach();
79}
80
81impl FileFinder {
82 fn register(
83 workspace: &mut Workspace,
84 _window: Option<&mut Window>,
85 _: &mut Context<Workspace>,
86 ) {
87 workspace.register_action(
88 |workspace, action: &workspace::ToggleFileFinder, window, cx| {
89 let Some(file_finder) = workspace.active_modal::<Self>(cx) else {
90 Self::open(workspace, action.separate_history, window, cx).detach();
91 return;
92 };
93
94 file_finder.update(cx, |file_finder, cx| {
95 file_finder.init_modifiers = Some(window.modifiers());
96 file_finder.picker.update(cx, |picker, cx| {
97 picker.cycle_selection(window, cx);
98 });
99 });
100 },
101 );
102 }
103
104 fn open(
105 workspace: &mut Workspace,
106 separate_history: bool,
107 window: &mut Window,
108 cx: &mut Context<Workspace>,
109 ) -> Task<()> {
110 let project = workspace.project().read(cx);
111 let fs = project.fs();
112
113 let currently_opened_path = workspace
114 .active_item(cx)
115 .and_then(|item| item.project_path(cx))
116 .map(|project_path| {
117 let abs_path = project
118 .worktree_for_id(project_path.worktree_id, cx)
119 .map(|worktree| worktree.read(cx).abs_path().join(&project_path.path));
120 FoundPath::new(project_path, abs_path)
121 });
122
123 let history_items = workspace
124 .recent_navigation_history(Some(MAX_RECENT_SELECTIONS), cx)
125 .into_iter()
126 .filter_map(|(project_path, abs_path)| {
127 if project.entry_for_path(&project_path, cx).is_some() {
128 return Some(Task::ready(Some(FoundPath::new(project_path, abs_path))));
129 }
130 let abs_path = abs_path?;
131 if project.is_local() {
132 let fs = fs.clone();
133 Some(cx.background_spawn(async move {
134 if fs.is_file(&abs_path).await {
135 Some(FoundPath::new(project_path, Some(abs_path)))
136 } else {
137 None
138 }
139 }))
140 } else {
141 Some(Task::ready(Some(FoundPath::new(
142 project_path,
143 Some(abs_path),
144 ))))
145 }
146 })
147 .collect::<Vec<_>>();
148 cx.spawn_in(window, async move |workspace, cx| {
149 let history_items = join_all(history_items).await.into_iter().flatten();
150
151 workspace
152 .update_in(cx, |workspace, window, cx| {
153 let project = workspace.project().clone();
154 let weak_workspace = cx.entity().downgrade();
155 workspace.toggle_modal(window, cx, |window, cx| {
156 let delegate = FileFinderDelegate::new(
157 cx.entity().downgrade(),
158 weak_workspace,
159 project,
160 currently_opened_path,
161 history_items.collect(),
162 separate_history,
163 window,
164 cx,
165 );
166
167 FileFinder::new(delegate, window, cx)
168 });
169 })
170 .ok();
171 })
172 }
173
174 fn new(delegate: FileFinderDelegate, window: &mut Window, cx: &mut Context<Self>) -> Self {
175 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
176 let picker_focus_handle = picker.focus_handle(cx);
177 picker.update(cx, |picker, _| {
178 picker.delegate.focus_handle = picker_focus_handle.clone();
179 });
180 Self {
181 picker,
182 picker_focus_handle,
183 init_modifiers: window.modifiers().modified().then_some(window.modifiers()),
184 }
185 }
186
187 fn handle_modifiers_changed(
188 &mut self,
189 event: &ModifiersChangedEvent,
190 window: &mut Window,
191 cx: &mut Context<Self>,
192 ) {
193 let Some(init_modifiers) = self.init_modifiers.take() else {
194 return;
195 };
196 if self.picker.read(cx).delegate.has_changed_selected_index {
197 if !event.modified() || !init_modifiers.is_subset_of(&event) {
198 self.init_modifiers = None;
199 window.dispatch_action(menu::Confirm.boxed_clone(), cx);
200 }
201 }
202 }
203
204 fn handle_select_prev(
205 &mut self,
206 _: &SelectPrevious,
207 window: &mut Window,
208 cx: &mut Context<Self>,
209 ) {
210 self.init_modifiers = Some(window.modifiers());
211 window.dispatch_action(Box::new(menu::SelectPrevious), cx);
212 }
213
214 fn handle_toggle_menu(&mut self, _: &ToggleMenu, window: &mut Window, cx: &mut Context<Self>) {
215 self.picker.update(cx, |picker, cx| {
216 let menu_handle = &picker.delegate.popover_menu_handle;
217 if menu_handle.is_deployed() {
218 menu_handle.hide(cx);
219 } else {
220 menu_handle.show(window, cx);
221 }
222 });
223 }
224
225 fn go_to_file_split_left(
226 &mut self,
227 _: &pane::SplitLeft,
228 window: &mut Window,
229 cx: &mut Context<Self>,
230 ) {
231 self.go_to_file_split_inner(SplitDirection::Left, window, cx)
232 }
233
234 fn go_to_file_split_right(
235 &mut self,
236 _: &pane::SplitRight,
237 window: &mut Window,
238 cx: &mut Context<Self>,
239 ) {
240 self.go_to_file_split_inner(SplitDirection::Right, window, cx)
241 }
242
243 fn go_to_file_split_up(
244 &mut self,
245 _: &pane::SplitUp,
246 window: &mut Window,
247 cx: &mut Context<Self>,
248 ) {
249 self.go_to_file_split_inner(SplitDirection::Up, window, cx)
250 }
251
252 fn go_to_file_split_down(
253 &mut self,
254 _: &pane::SplitDown,
255 window: &mut Window,
256 cx: &mut Context<Self>,
257 ) {
258 self.go_to_file_split_inner(SplitDirection::Down, window, cx)
259 }
260
261 fn go_to_file_split_inner(
262 &mut self,
263 split_direction: SplitDirection,
264 window: &mut Window,
265 cx: &mut Context<Self>,
266 ) {
267 self.picker.update(cx, |picker, cx| {
268 let delegate = &mut picker.delegate;
269 if let Some(workspace) = delegate.workspace.upgrade() {
270 if let Some(m) = delegate.matches.get(delegate.selected_index()) {
271 let path = match &m {
272 Match::History { path, .. } => {
273 let worktree_id = path.project.worktree_id;
274 ProjectPath {
275 worktree_id,
276 path: Arc::clone(&path.project.path),
277 }
278 }
279 Match::Search(m) => ProjectPath {
280 worktree_id: WorktreeId::from_usize(m.0.worktree_id),
281 path: m.0.path.clone(),
282 },
283 };
284 let open_task = workspace.update(cx, move |workspace, cx| {
285 workspace.split_path_preview(path, false, Some(split_direction), window, cx)
286 });
287 open_task.detach_and_log_err(cx);
288 }
289 }
290 })
291 }
292
293 pub fn modal_max_width(width_setting: Option<FileFinderWidth>, window: &mut Window) -> Pixels {
294 let window_width = window.viewport_size().width;
295 let small_width = Pixels(545.);
296
297 match width_setting {
298 None | Some(FileFinderWidth::Small) => small_width,
299 Some(FileFinderWidth::Full) => window_width,
300 Some(FileFinderWidth::XLarge) => (window_width - Pixels(512.)).max(small_width),
301 Some(FileFinderWidth::Large) => (window_width - Pixels(768.)).max(small_width),
302 Some(FileFinderWidth::Medium) => (window_width - Pixels(1024.)).max(small_width),
303 }
304 }
305}
306
307impl EventEmitter<DismissEvent> for FileFinder {}
308
309impl Focusable for FileFinder {
310 fn focus_handle(&self, _: &App) -> FocusHandle {
311 self.picker_focus_handle.clone()
312 }
313}
314
315impl Render for FileFinder {
316 fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
317 let key_context = self.picker.read(cx).delegate.key_context(window, cx);
318
319 let file_finder_settings = FileFinderSettings::get_global(cx);
320 let modal_max_width = Self::modal_max_width(file_finder_settings.modal_max_width, window);
321
322 v_flex()
323 .key_context(key_context)
324 .w(modal_max_width)
325 .on_modifiers_changed(cx.listener(Self::handle_modifiers_changed))
326 .on_action(cx.listener(Self::handle_select_prev))
327 .on_action(cx.listener(Self::handle_toggle_menu))
328 .on_action(cx.listener(Self::go_to_file_split_left))
329 .on_action(cx.listener(Self::go_to_file_split_right))
330 .on_action(cx.listener(Self::go_to_file_split_up))
331 .on_action(cx.listener(Self::go_to_file_split_down))
332 .child(self.picker.clone())
333 }
334}
335
336pub struct FileFinderDelegate {
337 file_finder: WeakEntity<FileFinder>,
338 workspace: WeakEntity<Workspace>,
339 project: Entity<Project>,
340 search_count: usize,
341 latest_search_id: usize,
342 latest_search_did_cancel: bool,
343 latest_search_query: Option<FileSearchQuery>,
344 currently_opened_path: Option<FoundPath>,
345 matches: Matches,
346 selected_index: usize,
347 has_changed_selected_index: bool,
348 cancel_flag: Arc<AtomicBool>,
349 history_items: Vec<FoundPath>,
350 separate_history: bool,
351 first_update: bool,
352 popover_menu_handle: PopoverMenuHandle<ContextMenu>,
353 focus_handle: FocusHandle,
354}
355
356/// Use a custom ordering for file finder: the regular one
357/// defines max element with the highest score and the latest alphanumerical path (in case of a tie on other params), e.g:
358/// `[{score: 0.5, path = "c/d" }, { score: 0.5, path = "/a/b" }]`
359///
360/// In the file finder, we would prefer to have the max element with the highest score and the earliest alphanumerical path, e.g:
361/// `[{ score: 0.5, path = "/a/b" }, {score: 0.5, path = "c/d" }]`
362/// as the files are shown in the project panel lists.
363#[derive(Debug, Clone, PartialEq, Eq)]
364struct ProjectPanelOrdMatch(PathMatch);
365
366impl Ord for ProjectPanelOrdMatch {
367 fn cmp(&self, other: &Self) -> cmp::Ordering {
368 self.0
369 .score
370 .partial_cmp(&other.0.score)
371 .unwrap_or(cmp::Ordering::Equal)
372 .then_with(|| self.0.worktree_id.cmp(&other.0.worktree_id))
373 .then_with(|| {
374 other
375 .0
376 .distance_to_relative_ancestor
377 .cmp(&self.0.distance_to_relative_ancestor)
378 })
379 .then_with(|| self.0.path.cmp(&other.0.path).reverse())
380 }
381}
382
383impl PartialOrd for ProjectPanelOrdMatch {
384 fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
385 Some(self.cmp(other))
386 }
387}
388
389#[derive(Debug, Default)]
390struct Matches {
391 separate_history: bool,
392 matches: Vec<Match>,
393}
394
395#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone)]
396enum Match {
397 History {
398 path: FoundPath,
399 panel_match: Option<ProjectPanelOrdMatch>,
400 },
401 Search(ProjectPanelOrdMatch),
402}
403
404impl Match {
405 fn path(&self) -> &Arc<Path> {
406 match self {
407 Match::History { path, .. } => &path.project.path,
408 Match::Search(panel_match) => &panel_match.0.path,
409 }
410 }
411
412 fn panel_match(&self) -> Option<&ProjectPanelOrdMatch> {
413 match self {
414 Match::History { panel_match, .. } => panel_match.as_ref(),
415 Match::Search(panel_match) => Some(&panel_match),
416 }
417 }
418}
419
420impl Matches {
421 fn len(&self) -> usize {
422 self.matches.len()
423 }
424
425 fn get(&self, index: usize) -> Option<&Match> {
426 self.matches.get(index)
427 }
428
429 fn position(
430 &self,
431 entry: &Match,
432 currently_opened: Option<&FoundPath>,
433 ) -> Result<usize, usize> {
434 if let Match::History {
435 path,
436 panel_match: None,
437 } = entry
438 {
439 // Slow case: linear search by path. Should not happen actually,
440 // since we call `position` only if matches set changed, but the query has not changed.
441 // And History entries do not have panel_match if query is empty, so there's no
442 // reason for the matches set to change.
443 self.matches
444 .iter()
445 .position(|m| path.project.path == *m.path())
446 .ok_or(0)
447 } else {
448 self.matches.binary_search_by(|m| {
449 // `reverse()` since if cmp_matches(a, b) == Ordering::Greater, then a is better than b.
450 // And we want the better entries go first.
451 Self::cmp_matches(self.separate_history, currently_opened, &m, &entry).reverse()
452 })
453 }
454 }
455
456 fn push_new_matches<'a>(
457 &'a mut self,
458 history_items: impl IntoIterator<Item = &'a FoundPath> + Clone,
459 currently_opened: Option<&'a FoundPath>,
460 query: Option<&FileSearchQuery>,
461 new_search_matches: impl Iterator<Item = ProjectPanelOrdMatch>,
462 extend_old_matches: bool,
463 ) {
464 let Some(query) = query else {
465 // assuming that if there's no query, then there's no search matches.
466 self.matches.clear();
467 let path_to_entry = |found_path: &FoundPath| Match::History {
468 path: found_path.clone(),
469 panel_match: None,
470 };
471 self.matches
472 .extend(currently_opened.into_iter().map(path_to_entry));
473
474 self.matches.extend(
475 history_items
476 .into_iter()
477 .filter(|found_path| Some(*found_path) != currently_opened)
478 .map(path_to_entry),
479 );
480 return;
481 };
482
483 let new_history_matches = matching_history_items(history_items, currently_opened, query);
484 let new_search_matches: Vec<Match> = new_search_matches
485 .filter(|path_match| !new_history_matches.contains_key(&path_match.0.path))
486 .map(Match::Search)
487 .collect();
488
489 if extend_old_matches {
490 // since we take history matches instead of new search matches
491 // and history matches has not changed(since the query has not changed and we do not extend old matches otherwise),
492 // old matches can't contain paths present in history_matches as well.
493 self.matches.retain(|m| matches!(m, Match::Search(_)));
494 } else {
495 self.matches.clear();
496 }
497
498 // At this point we have an unsorted set of new history matches, an unsorted set of new search matches
499 // and a sorted set of old search matches.
500 // It is possible that the new search matches' paths contain some of the old search matches' paths.
501 // History matches' paths are unique, since store in a HashMap by path.
502 // We build a sorted Vec<Match>, eliminating duplicate search matches.
503 // Search matches with the same paths should have equal `ProjectPanelOrdMatch`, so we should
504 // not have any duplicates after building the final list.
505 for new_match in new_history_matches
506 .into_values()
507 .chain(new_search_matches.into_iter())
508 {
509 match self.position(&new_match, currently_opened) {
510 Ok(_duplicate) => continue,
511 Err(i) => {
512 self.matches.insert(i, new_match);
513 if self.matches.len() == 100 {
514 break;
515 }
516 }
517 }
518 }
519 }
520
521 /// If a < b, then a is a worse match, aligning with the `ProjectPanelOrdMatch` ordering.
522 fn cmp_matches(
523 separate_history: bool,
524 currently_opened: Option<&FoundPath>,
525 a: &Match,
526 b: &Match,
527 ) -> cmp::Ordering {
528 debug_assert!(a.panel_match().is_some() && b.panel_match().is_some());
529
530 match (&a, &b) {
531 // bubble currently opened files to the top
532 (Match::History { path, .. }, _) if Some(path) == currently_opened => {
533 return cmp::Ordering::Greater;
534 }
535 (_, Match::History { path, .. }) if Some(path) == currently_opened => {
536 return cmp::Ordering::Less;
537 }
538
539 _ => {}
540 }
541
542 if separate_history {
543 match (a, b) {
544 (Match::History { .. }, Match::Search(_)) => return cmp::Ordering::Greater,
545 (Match::Search(_), Match::History { .. }) => return cmp::Ordering::Less,
546
547 _ => {}
548 }
549 }
550
551 let a_panel_match = match a.panel_match() {
552 Some(pm) => pm,
553 None => {
554 return if b.panel_match().is_some() {
555 cmp::Ordering::Less
556 } else {
557 cmp::Ordering::Equal
558 };
559 }
560 };
561
562 let b_panel_match = match b.panel_match() {
563 Some(pm) => pm,
564 None => return cmp::Ordering::Greater,
565 };
566
567 let a_in_filename = Self::is_filename_match(a_panel_match);
568 let b_in_filename = Self::is_filename_match(b_panel_match);
569
570 match (a_in_filename, b_in_filename) {
571 (true, false) => return cmp::Ordering::Greater,
572 (false, true) => return cmp::Ordering::Less,
573 _ => {} // Both are filename matches or both are path matches
574 }
575
576 a_panel_match.cmp(b_panel_match)
577 }
578
579 /// Determines if the match occurred within the filename rather than in the path
580 fn is_filename_match(panel_match: &ProjectPanelOrdMatch) -> bool {
581 if panel_match.0.positions.is_empty() {
582 return false;
583 }
584
585 if let Some(filename) = panel_match.0.path.file_name() {
586 let path_str = panel_match.0.path.to_string_lossy();
587 let filename_str = filename.to_string_lossy();
588
589 if let Some(filename_pos) = path_str.rfind(&*filename_str) {
590 return panel_match.0.positions[0] >= filename_pos;
591 }
592 }
593
594 false
595 }
596}
597
598fn matching_history_items<'a>(
599 history_items: impl IntoIterator<Item = &'a FoundPath>,
600 currently_opened: Option<&'a FoundPath>,
601 query: &FileSearchQuery,
602) -> HashMap<Arc<Path>, Match> {
603 let mut candidates_paths = HashMap::default();
604
605 let history_items_by_worktrees = history_items
606 .into_iter()
607 .chain(currently_opened)
608 .filter_map(|found_path| {
609 let candidate = PathMatchCandidate {
610 is_dir: false, // You can't open directories as project items
611 path: &found_path.project.path,
612 // Only match history items names, otherwise their paths may match too many queries, producing false positives.
613 // E.g. `foo` would match both `something/foo/bar.rs` and `something/foo/foo.rs` and if the former is a history item,
614 // it would be shown first always, despite the latter being a better match.
615 char_bag: CharBag::from_iter(
616 found_path
617 .project
618 .path
619 .file_name()?
620 .to_string_lossy()
621 .to_lowercase()
622 .chars(),
623 ),
624 };
625 candidates_paths.insert(&found_path.project, found_path);
626 Some((found_path.project.worktree_id, candidate))
627 })
628 .fold(
629 HashMap::default(),
630 |mut candidates, (worktree_id, new_candidate)| {
631 candidates
632 .entry(worktree_id)
633 .or_insert_with(Vec::new)
634 .push(new_candidate);
635 candidates
636 },
637 );
638 let mut matching_history_paths = HashMap::default();
639 for (worktree, candidates) in history_items_by_worktrees {
640 let max_results = candidates.len() + 1;
641 matching_history_paths.extend(
642 fuzzy::match_fixed_path_set(
643 candidates,
644 worktree.to_usize(),
645 query.path_query(),
646 false,
647 max_results,
648 )
649 .into_iter()
650 .filter_map(|path_match| {
651 candidates_paths
652 .remove_entry(&ProjectPath {
653 worktree_id: WorktreeId::from_usize(path_match.worktree_id),
654 path: Arc::clone(&path_match.path),
655 })
656 .map(|(_, found_path)| {
657 (
658 Arc::clone(&path_match.path),
659 Match::History {
660 path: found_path.clone(),
661 panel_match: Some(ProjectPanelOrdMatch(path_match)),
662 },
663 )
664 })
665 }),
666 );
667 }
668 matching_history_paths
669}
670
671#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
672struct FoundPath {
673 project: ProjectPath,
674 absolute: Option<PathBuf>,
675}
676
677impl FoundPath {
678 fn new(project: ProjectPath, absolute: Option<PathBuf>) -> Self {
679 Self { project, absolute }
680 }
681}
682
683const MAX_RECENT_SELECTIONS: usize = 20;
684
685pub enum Event {
686 Selected(ProjectPath),
687 Dismissed,
688}
689
690#[derive(Debug, Clone)]
691struct FileSearchQuery {
692 raw_query: String,
693 file_query_end: Option<usize>,
694 path_position: PathWithPosition,
695}
696
697impl FileSearchQuery {
698 fn path_query(&self) -> &str {
699 match self.file_query_end {
700 Some(file_path_end) => &self.raw_query[..file_path_end],
701 None => &self.raw_query,
702 }
703 }
704}
705
706impl FileFinderDelegate {
707 fn new(
708 file_finder: WeakEntity<FileFinder>,
709 workspace: WeakEntity<Workspace>,
710 project: Entity<Project>,
711 currently_opened_path: Option<FoundPath>,
712 history_items: Vec<FoundPath>,
713 separate_history: bool,
714 window: &mut Window,
715 cx: &mut Context<FileFinder>,
716 ) -> Self {
717 Self::subscribe_to_updates(&project, window, cx);
718 Self {
719 file_finder,
720 workspace,
721 project,
722 search_count: 0,
723 latest_search_id: 0,
724 latest_search_did_cancel: false,
725 latest_search_query: None,
726 currently_opened_path,
727 matches: Matches::default(),
728 has_changed_selected_index: false,
729 selected_index: 0,
730 cancel_flag: Arc::new(AtomicBool::new(false)),
731 history_items,
732 separate_history,
733 first_update: true,
734 popover_menu_handle: PopoverMenuHandle::default(),
735 focus_handle: cx.focus_handle(),
736 }
737 }
738
739 fn subscribe_to_updates(
740 project: &Entity<Project>,
741 window: &mut Window,
742 cx: &mut Context<FileFinder>,
743 ) {
744 cx.subscribe_in(project, window, |file_finder, _, event, window, cx| {
745 match event {
746 project::Event::WorktreeUpdatedEntries(_, _)
747 | project::Event::WorktreeAdded(_)
748 | project::Event::WorktreeRemoved(_) => file_finder
749 .picker
750 .update(cx, |picker, cx| picker.refresh(window, cx)),
751 _ => {}
752 };
753 })
754 .detach();
755 }
756
757 fn spawn_search(
758 &mut self,
759 query: FileSearchQuery,
760 window: &mut Window,
761 cx: &mut Context<Picker<Self>>,
762 ) -> Task<()> {
763 let relative_to = self
764 .currently_opened_path
765 .as_ref()
766 .map(|found_path| Arc::clone(&found_path.project.path));
767 let worktrees = self
768 .project
769 .read(cx)
770 .visible_worktrees(cx)
771 .collect::<Vec<_>>();
772 let include_root_name = worktrees.len() > 1;
773 let candidate_sets = worktrees
774 .into_iter()
775 .map(|worktree| {
776 let worktree = worktree.read(cx);
777 PathMatchCandidateSet {
778 snapshot: worktree.snapshot(),
779 include_ignored: worktree
780 .root_entry()
781 .map_or(false, |entry| entry.is_ignored),
782 include_root_name,
783 candidates: project::Candidates::Files,
784 }
785 })
786 .collect::<Vec<_>>();
787
788 let search_id = util::post_inc(&mut self.search_count);
789 self.cancel_flag.store(true, atomic::Ordering::Relaxed);
790 self.cancel_flag = Arc::new(AtomicBool::new(false));
791 let cancel_flag = self.cancel_flag.clone();
792 cx.spawn_in(window, async move |picker, cx| {
793 let matches = fuzzy::match_path_sets(
794 candidate_sets.as_slice(),
795 query.path_query(),
796 relative_to,
797 false,
798 100,
799 &cancel_flag,
800 cx.background_executor().clone(),
801 )
802 .await
803 .into_iter()
804 .map(ProjectPanelOrdMatch);
805 let did_cancel = cancel_flag.load(atomic::Ordering::Relaxed);
806 picker
807 .update(cx, |picker, cx| {
808 picker
809 .delegate
810 .set_search_matches(search_id, did_cancel, query, matches, cx)
811 })
812 .log_err();
813 })
814 }
815
816 fn set_search_matches(
817 &mut self,
818 search_id: usize,
819 did_cancel: bool,
820 query: FileSearchQuery,
821 matches: impl IntoIterator<Item = ProjectPanelOrdMatch>,
822
823 cx: &mut Context<Picker<Self>>,
824 ) {
825 if search_id >= self.latest_search_id {
826 self.latest_search_id = search_id;
827 let query_changed = Some(query.path_query())
828 != self
829 .latest_search_query
830 .as_ref()
831 .map(|query| query.path_query());
832 let extend_old_matches = self.latest_search_did_cancel && !query_changed;
833
834 let selected_match = if query_changed {
835 None
836 } else {
837 self.matches.get(self.selected_index).cloned()
838 };
839
840 self.matches.push_new_matches(
841 &self.history_items,
842 self.currently_opened_path.as_ref(),
843 Some(&query),
844 matches.into_iter(),
845 extend_old_matches,
846 );
847
848 self.selected_index = selected_match.map_or_else(
849 || self.calculate_selected_index(),
850 |m| {
851 self.matches
852 .position(&m, self.currently_opened_path.as_ref())
853 .unwrap_or(0)
854 },
855 );
856
857 self.latest_search_query = Some(query);
858 self.latest_search_did_cancel = did_cancel;
859
860 cx.notify();
861 }
862 }
863
864 fn labels_for_match(
865 &self,
866 path_match: &Match,
867 window: &mut Window,
868 cx: &App,
869 ix: usize,
870 ) -> (HighlightedLabel, HighlightedLabel) {
871 let (file_name, file_name_positions, mut full_path, mut full_path_positions) =
872 match &path_match {
873 Match::History {
874 path: entry_path,
875 panel_match,
876 } => {
877 let worktree_id = entry_path.project.worktree_id;
878 let project_relative_path = &entry_path.project.path;
879 let has_worktree = self
880 .project
881 .read(cx)
882 .worktree_for_id(worktree_id, cx)
883 .is_some();
884
885 if let Some(absolute_path) =
886 entry_path.absolute.as_ref().filter(|_| !has_worktree)
887 {
888 (
889 absolute_path
890 .file_name()
891 .map_or_else(
892 || project_relative_path.to_string_lossy(),
893 |file_name| file_name.to_string_lossy(),
894 )
895 .to_string(),
896 Vec::new(),
897 absolute_path.to_string_lossy().to_string(),
898 Vec::new(),
899 )
900 } else {
901 let mut path = Arc::clone(project_relative_path);
902 if project_relative_path.as_ref() == Path::new("") {
903 if let Some(absolute_path) = &entry_path.absolute {
904 path = Arc::from(absolute_path.as_path());
905 }
906 }
907
908 let mut path_match = PathMatch {
909 score: ix as f64,
910 positions: Vec::new(),
911 worktree_id: worktree_id.to_usize(),
912 path,
913 is_dir: false, // File finder doesn't support directories
914 path_prefix: "".into(),
915 distance_to_relative_ancestor: usize::MAX,
916 };
917 if let Some(found_path_match) = &panel_match {
918 path_match
919 .positions
920 .extend(found_path_match.0.positions.iter())
921 }
922
923 self.labels_for_path_match(&path_match)
924 }
925 }
926 Match::Search(path_match) => self.labels_for_path_match(&path_match.0),
927 };
928
929 if file_name_positions.is_empty() {
930 if let Some(user_home_path) = std::env::var("HOME").ok() {
931 let user_home_path = user_home_path.trim();
932 if !user_home_path.is_empty() {
933 if (&full_path).starts_with(user_home_path) {
934 full_path.replace_range(0..user_home_path.len(), "~");
935 full_path_positions.retain_mut(|pos| {
936 if *pos >= user_home_path.len() {
937 *pos -= user_home_path.len();
938 *pos += 1;
939 true
940 } else {
941 false
942 }
943 })
944 }
945 }
946 }
947 }
948
949 if full_path.is_ascii() {
950 let file_finder_settings = FileFinderSettings::get_global(cx);
951 let max_width =
952 FileFinder::modal_max_width(file_finder_settings.modal_max_width, window);
953 let (normal_em, small_em) = {
954 let style = window.text_style();
955 let font_id = window.text_system().resolve_font(&style.font());
956 let font_size = TextSize::Default.rems(cx).to_pixels(window.rem_size());
957 let normal = cx
958 .text_system()
959 .em_width(font_id, font_size)
960 .unwrap_or(px(16.));
961 let font_size = TextSize::Small.rems(cx).to_pixels(window.rem_size());
962 let small = cx
963 .text_system()
964 .em_width(font_id, font_size)
965 .unwrap_or(px(10.));
966 (normal, small)
967 };
968 let budget = full_path_budget(&file_name, normal_em, small_em, max_width);
969 // If the computed budget is zero, we certainly won't be able to achieve it,
970 // so no point trying to elide the path.
971 if budget > 0 && full_path.len() > budget {
972 let components = PathComponentSlice::new(&full_path);
973 if let Some(elided_range) =
974 components.elision_range(budget - 1, &full_path_positions)
975 {
976 let elided_len = elided_range.end - elided_range.start;
977 let placeholder = "…";
978 full_path_positions.retain_mut(|mat| {
979 if *mat >= elided_range.end {
980 *mat -= elided_len;
981 *mat += placeholder.len();
982 } else if *mat >= elided_range.start {
983 return false;
984 }
985 true
986 });
987 full_path.replace_range(elided_range, placeholder);
988 }
989 }
990 }
991
992 (
993 HighlightedLabel::new(file_name, file_name_positions),
994 HighlightedLabel::new(full_path, full_path_positions)
995 .size(LabelSize::Small)
996 .color(Color::Muted),
997 )
998 }
999
1000 fn labels_for_path_match(
1001 &self,
1002 path_match: &PathMatch,
1003 ) -> (String, Vec<usize>, String, Vec<usize>) {
1004 let path = &path_match.path;
1005 let path_string = path.to_string_lossy();
1006 let full_path = [path_match.path_prefix.as_ref(), path_string.as_ref()].join("");
1007 let mut path_positions = path_match.positions.clone();
1008
1009 let file_name = path.file_name().map_or_else(
1010 || path_match.path_prefix.to_string(),
1011 |file_name| file_name.to_string_lossy().to_string(),
1012 );
1013 let file_name_start = path_match.path_prefix.len() + path_string.len() - file_name.len();
1014 let file_name_positions = path_positions
1015 .iter()
1016 .filter_map(|pos| {
1017 if pos >= &file_name_start {
1018 Some(pos - file_name_start)
1019 } else {
1020 None
1021 }
1022 })
1023 .collect();
1024
1025 let full_path = full_path.trim_end_matches(&file_name).to_string();
1026 path_positions.retain(|idx| *idx < full_path.len());
1027
1028 (file_name, file_name_positions, full_path, path_positions)
1029 }
1030
1031 fn lookup_absolute_path(
1032 &self,
1033 query: FileSearchQuery,
1034 window: &mut Window,
1035 cx: &mut Context<Picker<Self>>,
1036 ) -> Task<()> {
1037 cx.spawn_in(window, async move |picker, cx| {
1038 let Some(project) = picker
1039 .update(cx, |picker, _| picker.delegate.project.clone())
1040 .log_err()
1041 else {
1042 return;
1043 };
1044
1045 let query_path = Path::new(query.path_query());
1046 let mut path_matches = Vec::new();
1047
1048 let abs_file_exists = if let Ok(task) = project.update(cx, |this, cx| {
1049 this.resolve_abs_file_path(query.path_query(), cx)
1050 }) {
1051 task.await.is_some()
1052 } else {
1053 false
1054 };
1055
1056 if abs_file_exists {
1057 let update_result = project
1058 .update(cx, |project, cx| {
1059 if let Some((worktree, relative_path)) =
1060 project.find_worktree(query_path, cx)
1061 {
1062 path_matches.push(ProjectPanelOrdMatch(PathMatch {
1063 score: 1.0,
1064 positions: Vec::new(),
1065 worktree_id: worktree.read(cx).id().to_usize(),
1066 path: Arc::from(relative_path),
1067 path_prefix: "".into(),
1068 is_dir: false, // File finder doesn't support directories
1069 distance_to_relative_ancestor: usize::MAX,
1070 }));
1071 }
1072 })
1073 .log_err();
1074 if update_result.is_none() {
1075 return;
1076 }
1077 }
1078
1079 picker
1080 .update_in(cx, |picker, _, cx| {
1081 let picker_delegate = &mut picker.delegate;
1082 let search_id = util::post_inc(&mut picker_delegate.search_count);
1083 picker_delegate.set_search_matches(search_id, false, query, path_matches, cx);
1084
1085 anyhow::Ok(())
1086 })
1087 .log_err();
1088 })
1089 }
1090
1091 /// Skips first history match (that is displayed topmost) if it's currently opened.
1092 fn calculate_selected_index(&self) -> usize {
1093 if let Some(Match::History { path, .. }) = self.matches.get(0) {
1094 if Some(path) == self.currently_opened_path.as_ref() {
1095 let elements_after_first = self.matches.len() - 1;
1096 if elements_after_first > 0 {
1097 return 1;
1098 }
1099 }
1100 }
1101
1102 0
1103 }
1104
1105 fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
1106 let mut key_context = KeyContext::new_with_defaults();
1107 key_context.add("FileFinder");
1108 if self.popover_menu_handle.is_focused(window, cx) {
1109 key_context.add("menu_open");
1110 }
1111 key_context
1112 }
1113}
1114
1115fn full_path_budget(
1116 file_name: &str,
1117 normal_em: Pixels,
1118 small_em: Pixels,
1119 max_width: Pixels,
1120) -> usize {
1121 (((max_width / 0.8) - file_name.len() * normal_em) / small_em) as usize
1122}
1123
1124impl PickerDelegate for FileFinderDelegate {
1125 type ListItem = ListItem;
1126
1127 fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
1128 "Search project files...".into()
1129 }
1130
1131 fn match_count(&self) -> usize {
1132 self.matches.len()
1133 }
1134
1135 fn selected_index(&self) -> usize {
1136 self.selected_index
1137 }
1138
1139 fn set_selected_index(&mut self, ix: usize, _: &mut Window, cx: &mut Context<Picker<Self>>) {
1140 self.has_changed_selected_index = true;
1141 self.selected_index = ix;
1142 cx.notify();
1143 }
1144
1145 fn separators_after_indices(&self) -> Vec<usize> {
1146 if self.separate_history {
1147 let first_non_history_index = self
1148 .matches
1149 .matches
1150 .iter()
1151 .enumerate()
1152 .find(|(_, m)| !matches!(m, Match::History { .. }))
1153 .map(|(i, _)| i);
1154 if let Some(first_non_history_index) = first_non_history_index {
1155 if first_non_history_index > 0 {
1156 return vec![first_non_history_index - 1];
1157 }
1158 }
1159 }
1160 Vec::new()
1161 }
1162
1163 fn update_matches(
1164 &mut self,
1165 raw_query: String,
1166 window: &mut Window,
1167 cx: &mut Context<Picker<Self>>,
1168 ) -> Task<()> {
1169 let raw_query = raw_query.replace(' ', "");
1170 let raw_query = raw_query.trim();
1171 if raw_query.is_empty() {
1172 // if there was no query before, and we already have some (history) matches
1173 // there's no need to update anything, since nothing has changed.
1174 // We also want to populate matches set from history entries on the first update.
1175 if self.latest_search_query.is_some() || self.first_update {
1176 let project = self.project.read(cx);
1177
1178 self.latest_search_id = post_inc(&mut self.search_count);
1179 self.latest_search_query = None;
1180 self.matches = Matches {
1181 separate_history: self.separate_history,
1182 ..Matches::default()
1183 };
1184 self.matches.push_new_matches(
1185 self.history_items.iter().filter(|history_item| {
1186 project
1187 .worktree_for_id(history_item.project.worktree_id, cx)
1188 .is_some()
1189 || ((project.is_local() || project.is_via_ssh())
1190 && history_item.absolute.is_some())
1191 }),
1192 self.currently_opened_path.as_ref(),
1193 None,
1194 None.into_iter(),
1195 false,
1196 );
1197
1198 self.first_update = false;
1199 self.selected_index = 0;
1200 }
1201 cx.notify();
1202 Task::ready(())
1203 } else {
1204 let path_position = PathWithPosition::parse_str(&raw_query);
1205
1206 let query = FileSearchQuery {
1207 raw_query: raw_query.trim().to_owned(),
1208 file_query_end: if path_position.path.to_str().unwrap_or(raw_query) == raw_query {
1209 None
1210 } else {
1211 // Safe to unwrap as we won't get here when the unwrap in if fails
1212 Some(path_position.path.to_str().unwrap().len())
1213 },
1214 path_position,
1215 };
1216
1217 if Path::new(query.path_query()).is_absolute() {
1218 self.lookup_absolute_path(query, window, cx)
1219 } else {
1220 self.spawn_search(query, window, cx)
1221 }
1222 }
1223 }
1224
1225 fn confirm(
1226 &mut self,
1227 secondary: bool,
1228 window: &mut Window,
1229 cx: &mut Context<Picker<FileFinderDelegate>>,
1230 ) {
1231 if let Some(m) = self.matches.get(self.selected_index()) {
1232 if let Some(workspace) = self.workspace.upgrade() {
1233 let open_task = workspace.update(cx, |workspace, cx| {
1234 let split_or_open =
1235 |workspace: &mut Workspace,
1236 project_path,
1237 window: &mut Window,
1238 cx: &mut Context<Workspace>| {
1239 let allow_preview =
1240 PreviewTabsSettings::get_global(cx).enable_preview_from_file_finder;
1241 if secondary {
1242 workspace.split_path_preview(
1243 project_path,
1244 allow_preview,
1245 None,
1246 window,
1247 cx,
1248 )
1249 } else {
1250 workspace.open_path_preview(
1251 project_path,
1252 None,
1253 true,
1254 allow_preview,
1255 true,
1256 window,
1257 cx,
1258 )
1259 }
1260 };
1261 match &m {
1262 Match::History { path, .. } => {
1263 let worktree_id = path.project.worktree_id;
1264 if workspace
1265 .project()
1266 .read(cx)
1267 .worktree_for_id(worktree_id, cx)
1268 .is_some()
1269 {
1270 split_or_open(
1271 workspace,
1272 ProjectPath {
1273 worktree_id,
1274 path: Arc::clone(&path.project.path),
1275 },
1276 window,
1277 cx,
1278 )
1279 } else {
1280 match path.absolute.as_ref() {
1281 Some(abs_path) => {
1282 if secondary {
1283 workspace.split_abs_path(
1284 abs_path.to_path_buf(),
1285 false,
1286 window,
1287 cx,
1288 )
1289 } else {
1290 workspace.open_abs_path(
1291 abs_path.to_path_buf(),
1292 OpenOptions {
1293 visible: Some(OpenVisible::None),
1294 ..Default::default()
1295 },
1296 window,
1297 cx,
1298 )
1299 }
1300 }
1301 None => split_or_open(
1302 workspace,
1303 ProjectPath {
1304 worktree_id,
1305 path: Arc::clone(&path.project.path),
1306 },
1307 window,
1308 cx,
1309 ),
1310 }
1311 }
1312 }
1313 Match::Search(m) => split_or_open(
1314 workspace,
1315 ProjectPath {
1316 worktree_id: WorktreeId::from_usize(m.0.worktree_id),
1317 path: m.0.path.clone(),
1318 },
1319 window,
1320 cx,
1321 ),
1322 }
1323 });
1324
1325 let row = self
1326 .latest_search_query
1327 .as_ref()
1328 .and_then(|query| query.path_position.row)
1329 .map(|row| row.saturating_sub(1));
1330 let col = self
1331 .latest_search_query
1332 .as_ref()
1333 .and_then(|query| query.path_position.column)
1334 .unwrap_or(0)
1335 .saturating_sub(1);
1336 let finder = self.file_finder.clone();
1337
1338 cx.spawn_in(window, async move |_, cx| {
1339 let item = open_task.await.notify_async_err(cx)?;
1340 if let Some(row) = row {
1341 if let Some(active_editor) = item.downcast::<Editor>() {
1342 active_editor
1343 .downgrade()
1344 .update_in(cx, |editor, window, cx| {
1345 editor.go_to_singleton_buffer_point(
1346 Point::new(row, col),
1347 window,
1348 cx,
1349 );
1350 })
1351 .log_err();
1352 }
1353 }
1354 finder.update(cx, |_, cx| cx.emit(DismissEvent)).ok()?;
1355
1356 Some(())
1357 })
1358 .detach();
1359 }
1360 }
1361 }
1362
1363 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<FileFinderDelegate>>) {
1364 self.file_finder
1365 .update(cx, |_, cx| cx.emit(DismissEvent))
1366 .log_err();
1367 }
1368
1369 fn render_match(
1370 &self,
1371 ix: usize,
1372 selected: bool,
1373 window: &mut Window,
1374 cx: &mut Context<Picker<Self>>,
1375 ) -> Option<Self::ListItem> {
1376 let settings = FileFinderSettings::get_global(cx);
1377
1378 let path_match = self
1379 .matches
1380 .get(ix)
1381 .expect("Invalid matches state: no element for index {ix}");
1382
1383 let history_icon = match &path_match {
1384 Match::History { .. } => Icon::new(IconName::HistoryRerun)
1385 .color(Color::Muted)
1386 .size(IconSize::Small)
1387 .into_any_element(),
1388 Match::Search(_) => v_flex()
1389 .flex_none()
1390 .size(IconSize::Small.rems())
1391 .into_any_element(),
1392 };
1393 let (file_name_label, full_path_label) = self.labels_for_match(path_match, window, cx, ix);
1394
1395 let file_icon = maybe!({
1396 if !settings.file_icons {
1397 return None;
1398 }
1399 let file_name = path_match.path().file_name()?;
1400 let icon = FileIcons::get_icon(file_name.as_ref(), cx)?;
1401 Some(Icon::from_path(icon).color(Color::Muted))
1402 });
1403
1404 Some(
1405 ListItem::new(ix)
1406 .spacing(ListItemSpacing::Sparse)
1407 .start_slot::<Icon>(file_icon)
1408 .end_slot::<AnyElement>(history_icon)
1409 .inset(true)
1410 .toggle_state(selected)
1411 .child(
1412 h_flex()
1413 .gap_2()
1414 .py_px()
1415 .child(file_name_label)
1416 .child(full_path_label),
1417 ),
1418 )
1419 }
1420
1421 fn render_footer(&self, _: &mut Window, cx: &mut Context<Picker<Self>>) -> Option<AnyElement> {
1422 let context = self.focus_handle.clone();
1423 Some(
1424 h_flex()
1425 .w_full()
1426 .p_2()
1427 .gap_2()
1428 .justify_end()
1429 .border_t_1()
1430 .border_color(cx.theme().colors().border_variant)
1431 .child(
1432 Button::new("open-selection", "Open").on_click(|_, window, cx| {
1433 window.dispatch_action(menu::Confirm.boxed_clone(), cx)
1434 }),
1435 )
1436 .child(
1437 PopoverMenu::new("menu-popover")
1438 .with_handle(self.popover_menu_handle.clone())
1439 .attach(gpui::Corner::TopRight)
1440 .anchor(gpui::Corner::BottomRight)
1441 .trigger(
1442 Button::new("actions-trigger", "Split…")
1443 .selected_label_color(Color::Accent),
1444 )
1445 .menu({
1446 move |window, cx| {
1447 Some(ContextMenu::build(window, cx, {
1448 let context = context.clone();
1449 move |menu, _, _| {
1450 menu.context(context)
1451 .action("Split Left", pane::SplitLeft.boxed_clone())
1452 .action("Split Right", pane::SplitRight.boxed_clone())
1453 .action("Split Up", pane::SplitUp.boxed_clone())
1454 .action("Split Down", pane::SplitDown.boxed_clone())
1455 }
1456 }))
1457 }
1458 }),
1459 )
1460 .into_any(),
1461 )
1462 }
1463}
1464
1465#[derive(Clone, Debug, PartialEq, Eq)]
1466struct PathComponentSlice<'a> {
1467 path: Cow<'a, Path>,
1468 path_str: Cow<'a, str>,
1469 component_ranges: Vec<(Component<'a>, Range<usize>)>,
1470}
1471
1472impl<'a> PathComponentSlice<'a> {
1473 fn new(path: &'a str) -> Self {
1474 let trimmed_path = Path::new(path).components().as_path().as_os_str();
1475 let mut component_ranges = Vec::new();
1476 let mut components = Path::new(trimmed_path).components();
1477 let len = trimmed_path.as_encoded_bytes().len();
1478 let mut pos = 0;
1479 while let Some(component) = components.next() {
1480 component_ranges.push((component, pos..0));
1481 pos = len - components.as_path().as_os_str().as_encoded_bytes().len();
1482 }
1483 for ((_, range), ancestor) in component_ranges
1484 .iter_mut()
1485 .rev()
1486 .zip(Path::new(trimmed_path).ancestors())
1487 {
1488 range.end = ancestor.as_os_str().as_encoded_bytes().len();
1489 }
1490 Self {
1491 path: Cow::Borrowed(Path::new(path)),
1492 path_str: Cow::Borrowed(path),
1493 component_ranges,
1494 }
1495 }
1496
1497 fn elision_range(&self, budget: usize, matches: &[usize]) -> Option<Range<usize>> {
1498 let eligible_range = {
1499 assert!(matches.windows(2).all(|w| w[0] <= w[1]));
1500 let mut matches = matches.iter().copied().peekable();
1501 let mut longest: Option<Range<usize>> = None;
1502 let mut cur = 0..0;
1503 let mut seen_normal = false;
1504 for (i, (component, range)) in self.component_ranges.iter().enumerate() {
1505 let is_normal = matches!(component, Component::Normal(_));
1506 let is_first_normal = is_normal && !seen_normal;
1507 seen_normal |= is_normal;
1508 let is_last = i == self.component_ranges.len() - 1;
1509 let contains_match = matches.peek().is_some_and(|mat| range.contains(mat));
1510 if contains_match {
1511 matches.next();
1512 }
1513 if is_first_normal || is_last || !is_normal || contains_match {
1514 if longest
1515 .as_ref()
1516 .is_none_or(|old| old.end - old.start <= cur.end - cur.start)
1517 {
1518 longest = Some(cur);
1519 }
1520 cur = i + 1..i + 1;
1521 } else {
1522 cur.end = i + 1;
1523 }
1524 }
1525 if longest
1526 .as_ref()
1527 .is_none_or(|old| old.end - old.start <= cur.end - cur.start)
1528 {
1529 longest = Some(cur);
1530 }
1531 longest
1532 };
1533
1534 let eligible_range = eligible_range?;
1535 assert!(eligible_range.start <= eligible_range.end);
1536 if eligible_range.is_empty() {
1537 return None;
1538 }
1539
1540 let elided_range: Range<usize> = {
1541 let byte_range = self.component_ranges[eligible_range.start].1.start
1542 ..self.component_ranges[eligible_range.end - 1].1.end;
1543 let midpoint = self.path_str.len() / 2;
1544 let distance_from_start = byte_range.start.abs_diff(midpoint);
1545 let distance_from_end = byte_range.end.abs_diff(midpoint);
1546 let pick_from_end = distance_from_start > distance_from_end;
1547 let mut len_with_elision = self.path_str.len();
1548 let mut i = eligible_range.start;
1549 while i < eligible_range.end {
1550 let x = if pick_from_end {
1551 eligible_range.end - i + eligible_range.start - 1
1552 } else {
1553 i
1554 };
1555 len_with_elision -= self.component_ranges[x]
1556 .0
1557 .as_os_str()
1558 .as_encoded_bytes()
1559 .len()
1560 + 1;
1561 if len_with_elision <= budget {
1562 break;
1563 }
1564 i += 1;
1565 }
1566 if len_with_elision > budget {
1567 return None;
1568 } else if pick_from_end {
1569 let x = eligible_range.end - i + eligible_range.start - 1;
1570 x..eligible_range.end
1571 } else {
1572 let x = i;
1573 eligible_range.start..x + 1
1574 }
1575 };
1576
1577 let byte_range = self.component_ranges[elided_range.start].1.start
1578 ..self.component_ranges[elided_range.end - 1].1.end;
1579 Some(byte_range)
1580 }
1581}