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 actions, Action, AnyElement, App, Context, DismissEvent, Entity, EventEmitter, FocusHandle,
20 Focusable, KeyContext, Modifiers, ModifiersChangedEvent, ParentElement, Render, Styled, Task,
21 WeakEntity, Window,
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 atomic::{self, AtomicBool},
35 Arc,
36 },
37};
38use text::Point;
39use ui::{
40 prelude::*, ContextMenu, HighlightedLabel, ListItem, ListItemSpacing, PopoverMenu,
41 PopoverMenuHandle,
42};
43use util::{maybe, paths::PathWithPosition, post_inc, ResultExt};
44use workspace::{
45 item::PreviewTabsSettings, notifications::NotifyResultExt, pane, ModalView, OpenOptions,
46 OpenVisible, SplitDirection, Workspace,
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, move |workspace, mut cx| async move {
149 let history_items = join_all(history_items).await.into_iter().flatten();
150
151 workspace
152 .update_in(&mut 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 cmp::Ordering::Greater
534 }
535 (_, Match::History { path, .. }) if Some(path) == currently_opened => {
536 cmp::Ordering::Less
537 }
538
539 (Match::History { .. }, Match::Search(_)) if separate_history => cmp::Ordering::Greater,
540 (Match::Search(_), Match::History { .. }) if separate_history => cmp::Ordering::Less,
541
542 _ => a.panel_match().cmp(&b.panel_match()),
543 }
544 }
545}
546
547fn matching_history_items<'a>(
548 history_items: impl IntoIterator<Item = &'a FoundPath>,
549 currently_opened: Option<&'a FoundPath>,
550 query: &FileSearchQuery,
551) -> HashMap<Arc<Path>, Match> {
552 let mut candidates_paths = HashMap::default();
553
554 let history_items_by_worktrees = history_items
555 .into_iter()
556 .chain(currently_opened)
557 .filter_map(|found_path| {
558 let candidate = PathMatchCandidate {
559 is_dir: false, // You can't open directories as project items
560 path: &found_path.project.path,
561 // Only match history items names, otherwise their paths may match too many queries, producing false positives.
562 // E.g. `foo` would match both `something/foo/bar.rs` and `something/foo/foo.rs` and if the former is a history item,
563 // it would be shown first always, despite the latter being a better match.
564 char_bag: CharBag::from_iter(
565 found_path
566 .project
567 .path
568 .file_name()?
569 .to_string_lossy()
570 .to_lowercase()
571 .chars(),
572 ),
573 };
574 candidates_paths.insert(&found_path.project, found_path);
575 Some((found_path.project.worktree_id, candidate))
576 })
577 .fold(
578 HashMap::default(),
579 |mut candidates, (worktree_id, new_candidate)| {
580 candidates
581 .entry(worktree_id)
582 .or_insert_with(Vec::new)
583 .push(new_candidate);
584 candidates
585 },
586 );
587 let mut matching_history_paths = HashMap::default();
588 for (worktree, candidates) in history_items_by_worktrees {
589 let max_results = candidates.len() + 1;
590 matching_history_paths.extend(
591 fuzzy::match_fixed_path_set(
592 candidates,
593 worktree.to_usize(),
594 query.path_query(),
595 false,
596 max_results,
597 )
598 .into_iter()
599 .filter_map(|path_match| {
600 candidates_paths
601 .remove_entry(&ProjectPath {
602 worktree_id: WorktreeId::from_usize(path_match.worktree_id),
603 path: Arc::clone(&path_match.path),
604 })
605 .map(|(_, found_path)| {
606 (
607 Arc::clone(&path_match.path),
608 Match::History {
609 path: found_path.clone(),
610 panel_match: Some(ProjectPanelOrdMatch(path_match)),
611 },
612 )
613 })
614 }),
615 );
616 }
617 matching_history_paths
618}
619
620#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
621struct FoundPath {
622 project: ProjectPath,
623 absolute: Option<PathBuf>,
624}
625
626impl FoundPath {
627 fn new(project: ProjectPath, absolute: Option<PathBuf>) -> Self {
628 Self { project, absolute }
629 }
630}
631
632const MAX_RECENT_SELECTIONS: usize = 20;
633
634pub enum Event {
635 Selected(ProjectPath),
636 Dismissed,
637}
638
639#[derive(Debug, Clone)]
640struct FileSearchQuery {
641 raw_query: String,
642 file_query_end: Option<usize>,
643 path_position: PathWithPosition,
644}
645
646impl FileSearchQuery {
647 fn path_query(&self) -> &str {
648 match self.file_query_end {
649 Some(file_path_end) => &self.raw_query[..file_path_end],
650 None => &self.raw_query,
651 }
652 }
653}
654
655impl FileFinderDelegate {
656 #[allow(clippy::too_many_arguments)]
657 fn new(
658 file_finder: WeakEntity<FileFinder>,
659 workspace: WeakEntity<Workspace>,
660 project: Entity<Project>,
661 currently_opened_path: Option<FoundPath>,
662 history_items: Vec<FoundPath>,
663 separate_history: bool,
664 window: &mut Window,
665 cx: &mut Context<FileFinder>,
666 ) -> Self {
667 Self::subscribe_to_updates(&project, window, cx);
668 Self {
669 file_finder,
670 workspace,
671 project,
672 search_count: 0,
673 latest_search_id: 0,
674 latest_search_did_cancel: false,
675 latest_search_query: None,
676 currently_opened_path,
677 matches: Matches::default(),
678 has_changed_selected_index: false,
679 selected_index: 0,
680 cancel_flag: Arc::new(AtomicBool::new(false)),
681 history_items,
682 separate_history,
683 first_update: true,
684 popover_menu_handle: PopoverMenuHandle::default(),
685 focus_handle: cx.focus_handle(),
686 }
687 }
688
689 fn subscribe_to_updates(
690 project: &Entity<Project>,
691 window: &mut Window,
692 cx: &mut Context<FileFinder>,
693 ) {
694 cx.subscribe_in(project, window, |file_finder, _, event, window, cx| {
695 match event {
696 project::Event::WorktreeUpdatedEntries(_, _)
697 | project::Event::WorktreeAdded(_)
698 | project::Event::WorktreeRemoved(_) => file_finder
699 .picker
700 .update(cx, |picker, cx| picker.refresh(window, cx)),
701 _ => {}
702 };
703 })
704 .detach();
705 }
706
707 fn spawn_search(
708 &mut self,
709 query: FileSearchQuery,
710 window: &mut Window,
711 cx: &mut Context<Picker<Self>>,
712 ) -> Task<()> {
713 let relative_to = self
714 .currently_opened_path
715 .as_ref()
716 .map(|found_path| Arc::clone(&found_path.project.path));
717 let worktrees = self
718 .project
719 .read(cx)
720 .visible_worktrees(cx)
721 .collect::<Vec<_>>();
722 let include_root_name = worktrees.len() > 1;
723 let candidate_sets = worktrees
724 .into_iter()
725 .map(|worktree| {
726 let worktree = worktree.read(cx);
727 PathMatchCandidateSet {
728 snapshot: worktree.snapshot(),
729 include_ignored: worktree
730 .root_entry()
731 .map_or(false, |entry| entry.is_ignored),
732 include_root_name,
733 candidates: project::Candidates::Files,
734 }
735 })
736 .collect::<Vec<_>>();
737
738 let search_id = util::post_inc(&mut self.search_count);
739 self.cancel_flag.store(true, atomic::Ordering::Relaxed);
740 self.cancel_flag = Arc::new(AtomicBool::new(false));
741 let cancel_flag = self.cancel_flag.clone();
742 cx.spawn_in(window, |picker, mut cx| async move {
743 let matches = fuzzy::match_path_sets(
744 candidate_sets.as_slice(),
745 query.path_query(),
746 relative_to,
747 false,
748 100,
749 &cancel_flag,
750 cx.background_executor().clone(),
751 )
752 .await
753 .into_iter()
754 .map(ProjectPanelOrdMatch);
755 let did_cancel = cancel_flag.load(atomic::Ordering::Relaxed);
756 picker
757 .update(&mut cx, |picker, cx| {
758 picker
759 .delegate
760 .set_search_matches(search_id, did_cancel, query, matches, cx)
761 })
762 .log_err();
763 })
764 }
765
766 fn set_search_matches(
767 &mut self,
768 search_id: usize,
769 did_cancel: bool,
770 query: FileSearchQuery,
771 matches: impl IntoIterator<Item = ProjectPanelOrdMatch>,
772
773 cx: &mut Context<Picker<Self>>,
774 ) {
775 if search_id >= self.latest_search_id {
776 self.latest_search_id = search_id;
777 let query_changed = Some(query.path_query())
778 != self
779 .latest_search_query
780 .as_ref()
781 .map(|query| query.path_query());
782 let extend_old_matches = self.latest_search_did_cancel && !query_changed;
783
784 let selected_match = if query_changed {
785 None
786 } else {
787 self.matches.get(self.selected_index).cloned()
788 };
789
790 self.matches.push_new_matches(
791 &self.history_items,
792 self.currently_opened_path.as_ref(),
793 Some(&query),
794 matches.into_iter(),
795 extend_old_matches,
796 );
797
798 self.selected_index = selected_match.map_or_else(
799 || self.calculate_selected_index(),
800 |m| {
801 self.matches
802 .position(&m, self.currently_opened_path.as_ref())
803 .unwrap_or(0)
804 },
805 );
806
807 self.latest_search_query = Some(query);
808 self.latest_search_did_cancel = did_cancel;
809
810 cx.notify();
811 }
812 }
813
814 fn labels_for_match(
815 &self,
816 path_match: &Match,
817 window: &mut Window,
818 cx: &App,
819 ix: usize,
820 ) -> (HighlightedLabel, HighlightedLabel) {
821 let (file_name, file_name_positions, mut full_path, mut full_path_positions) =
822 match &path_match {
823 Match::History {
824 path: entry_path,
825 panel_match,
826 } => {
827 let worktree_id = entry_path.project.worktree_id;
828 let project_relative_path = &entry_path.project.path;
829 let has_worktree = self
830 .project
831 .read(cx)
832 .worktree_for_id(worktree_id, cx)
833 .is_some();
834
835 if let Some(absolute_path) =
836 entry_path.absolute.as_ref().filter(|_| !has_worktree)
837 {
838 (
839 absolute_path
840 .file_name()
841 .map_or_else(
842 || project_relative_path.to_string_lossy(),
843 |file_name| file_name.to_string_lossy(),
844 )
845 .to_string(),
846 Vec::new(),
847 absolute_path.to_string_lossy().to_string(),
848 Vec::new(),
849 )
850 } else {
851 let mut path = Arc::clone(project_relative_path);
852 if project_relative_path.as_ref() == Path::new("") {
853 if let Some(absolute_path) = &entry_path.absolute {
854 path = Arc::from(absolute_path.as_path());
855 }
856 }
857
858 let mut path_match = PathMatch {
859 score: ix as f64,
860 positions: Vec::new(),
861 worktree_id: worktree_id.to_usize(),
862 path,
863 is_dir: false, // File finder doesn't support directories
864 path_prefix: "".into(),
865 distance_to_relative_ancestor: usize::MAX,
866 };
867 if let Some(found_path_match) = &panel_match {
868 path_match
869 .positions
870 .extend(found_path_match.0.positions.iter())
871 }
872
873 self.labels_for_path_match(&path_match)
874 }
875 }
876 Match::Search(path_match) => self.labels_for_path_match(&path_match.0),
877 };
878
879 if file_name_positions.is_empty() {
880 if let Some(user_home_path) = std::env::var("HOME").ok() {
881 let user_home_path = user_home_path.trim();
882 if !user_home_path.is_empty() {
883 if (&full_path).starts_with(user_home_path) {
884 full_path.replace_range(0..user_home_path.len(), "~");
885 full_path_positions.retain_mut(|pos| {
886 if *pos >= user_home_path.len() {
887 *pos -= user_home_path.len();
888 *pos += 1;
889 true
890 } else {
891 false
892 }
893 })
894 }
895 }
896 }
897 }
898
899 if full_path.is_ascii() {
900 let file_finder_settings = FileFinderSettings::get_global(cx);
901 let max_width =
902 FileFinder::modal_max_width(file_finder_settings.modal_max_width, window);
903 let (normal_em, small_em) = {
904 let style = window.text_style();
905 let font_id = window.text_system().resolve_font(&style.font());
906 let font_size = TextSize::Default.rems(cx).to_pixels(window.rem_size());
907 let normal = cx
908 .text_system()
909 .em_width(font_id, font_size)
910 .unwrap_or(px(16.));
911 let font_size = TextSize::Small.rems(cx).to_pixels(window.rem_size());
912 let small = cx
913 .text_system()
914 .em_width(font_id, font_size)
915 .unwrap_or(px(10.));
916 (normal, small)
917 };
918 let budget = full_path_budget(&file_name, normal_em, small_em, max_width);
919 // If the computed budget is zero, we certainly won't be able to achieve it,
920 // so no point trying to elide the path.
921 if budget > 0 && full_path.len() > budget {
922 let components = PathComponentSlice::new(&full_path);
923 if let Some(elided_range) =
924 components.elision_range(budget - 1, &full_path_positions)
925 {
926 let elided_len = elided_range.end - elided_range.start;
927 let placeholder = "…";
928 full_path_positions.retain_mut(|mat| {
929 if *mat >= elided_range.end {
930 *mat -= elided_len;
931 *mat += placeholder.len();
932 } else if *mat >= elided_range.start {
933 return false;
934 }
935 true
936 });
937 full_path.replace_range(elided_range, placeholder);
938 }
939 }
940 }
941
942 (
943 HighlightedLabel::new(file_name, file_name_positions),
944 HighlightedLabel::new(full_path, full_path_positions)
945 .size(LabelSize::Small)
946 .color(Color::Muted),
947 )
948 }
949
950 fn labels_for_path_match(
951 &self,
952 path_match: &PathMatch,
953 ) -> (String, Vec<usize>, String, Vec<usize>) {
954 let path = &path_match.path;
955 let path_string = path.to_string_lossy();
956 let full_path = [path_match.path_prefix.as_ref(), path_string.as_ref()].join("");
957 let mut path_positions = path_match.positions.clone();
958
959 let file_name = path.file_name().map_or_else(
960 || path_match.path_prefix.to_string(),
961 |file_name| file_name.to_string_lossy().to_string(),
962 );
963 let file_name_start = path_match.path_prefix.len() + path_string.len() - file_name.len();
964 let file_name_positions = path_positions
965 .iter()
966 .filter_map(|pos| {
967 if pos >= &file_name_start {
968 Some(pos - file_name_start)
969 } else {
970 None
971 }
972 })
973 .collect();
974
975 let full_path = full_path.trim_end_matches(&file_name).to_string();
976 path_positions.retain(|idx| *idx < full_path.len());
977
978 (file_name, file_name_positions, full_path, path_positions)
979 }
980
981 fn lookup_absolute_path(
982 &self,
983 query: FileSearchQuery,
984 window: &mut Window,
985 cx: &mut Context<Picker<Self>>,
986 ) -> Task<()> {
987 cx.spawn_in(window, |picker, mut cx| async move {
988 let Some(project) = picker
989 .update(&mut cx, |picker, _| picker.delegate.project.clone())
990 .log_err()
991 else {
992 return;
993 };
994
995 let query_path = Path::new(query.path_query());
996 let mut path_matches = Vec::new();
997
998 let abs_file_exists = if let Ok(task) = project.update(&mut cx, |this, cx| {
999 this.resolve_abs_file_path(query.path_query(), cx)
1000 }) {
1001 task.await.is_some()
1002 } else {
1003 false
1004 };
1005
1006 if abs_file_exists {
1007 let update_result = project
1008 .update(&mut cx, |project, cx| {
1009 if let Some((worktree, relative_path)) =
1010 project.find_worktree(query_path, cx)
1011 {
1012 path_matches.push(ProjectPanelOrdMatch(PathMatch {
1013 score: 1.0,
1014 positions: Vec::new(),
1015 worktree_id: worktree.read(cx).id().to_usize(),
1016 path: Arc::from(relative_path),
1017 path_prefix: "".into(),
1018 is_dir: false, // File finder doesn't support directories
1019 distance_to_relative_ancestor: usize::MAX,
1020 }));
1021 }
1022 })
1023 .log_err();
1024 if update_result.is_none() {
1025 return;
1026 }
1027 }
1028
1029 picker
1030 .update_in(&mut cx, |picker, _, cx| {
1031 let picker_delegate = &mut picker.delegate;
1032 let search_id = util::post_inc(&mut picker_delegate.search_count);
1033 picker_delegate.set_search_matches(search_id, false, query, path_matches, cx);
1034
1035 anyhow::Ok(())
1036 })
1037 .log_err();
1038 })
1039 }
1040
1041 /// Skips first history match (that is displayed topmost) if it's currently opened.
1042 fn calculate_selected_index(&self) -> usize {
1043 if let Some(Match::History { path, .. }) = self.matches.get(0) {
1044 if Some(path) == self.currently_opened_path.as_ref() {
1045 let elements_after_first = self.matches.len() - 1;
1046 if elements_after_first > 0 {
1047 return 1;
1048 }
1049 }
1050 }
1051
1052 0
1053 }
1054
1055 fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
1056 let mut key_context = KeyContext::new_with_defaults();
1057 key_context.add("FileFinder");
1058 if self.popover_menu_handle.is_focused(window, cx) {
1059 key_context.add("menu_open");
1060 }
1061 key_context
1062 }
1063}
1064
1065fn full_path_budget(
1066 file_name: &str,
1067 normal_em: Pixels,
1068 small_em: Pixels,
1069 max_width: Pixels,
1070) -> usize {
1071 ((px(max_width / px(0.8)) - px(file_name.len() as f32) * normal_em) / small_em) as usize
1072}
1073
1074impl PickerDelegate for FileFinderDelegate {
1075 type ListItem = ListItem;
1076
1077 fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
1078 "Search project files...".into()
1079 }
1080
1081 fn match_count(&self) -> usize {
1082 self.matches.len()
1083 }
1084
1085 fn selected_index(&self) -> usize {
1086 self.selected_index
1087 }
1088
1089 fn set_selected_index(&mut self, ix: usize, _: &mut Window, cx: &mut Context<Picker<Self>>) {
1090 self.has_changed_selected_index = true;
1091 self.selected_index = ix;
1092 cx.notify();
1093 }
1094
1095 fn separators_after_indices(&self) -> Vec<usize> {
1096 if self.separate_history {
1097 let first_non_history_index = self
1098 .matches
1099 .matches
1100 .iter()
1101 .enumerate()
1102 .find(|(_, m)| !matches!(m, Match::History { .. }))
1103 .map(|(i, _)| i);
1104 if let Some(first_non_history_index) = first_non_history_index {
1105 if first_non_history_index > 0 {
1106 return vec![first_non_history_index - 1];
1107 }
1108 }
1109 }
1110 Vec::new()
1111 }
1112
1113 fn update_matches(
1114 &mut self,
1115 raw_query: String,
1116 window: &mut Window,
1117 cx: &mut Context<Picker<Self>>,
1118 ) -> Task<()> {
1119 let raw_query = raw_query.replace(' ', "");
1120 let raw_query = raw_query.trim();
1121 if raw_query.is_empty() {
1122 // if there was no query before, and we already have some (history) matches
1123 // there's no need to update anything, since nothing has changed.
1124 // We also want to populate matches set from history entries on the first update.
1125 if self.latest_search_query.is_some() || self.first_update {
1126 let project = self.project.read(cx);
1127
1128 self.latest_search_id = post_inc(&mut self.search_count);
1129 self.latest_search_query = None;
1130 self.matches = Matches {
1131 separate_history: self.separate_history,
1132 ..Matches::default()
1133 };
1134 self.matches.push_new_matches(
1135 self.history_items.iter().filter(|history_item| {
1136 project
1137 .worktree_for_id(history_item.project.worktree_id, cx)
1138 .is_some()
1139 || ((project.is_local() || project.is_via_ssh())
1140 && history_item.absolute.is_some())
1141 }),
1142 self.currently_opened_path.as_ref(),
1143 None,
1144 None.into_iter(),
1145 false,
1146 );
1147
1148 self.first_update = false;
1149 self.selected_index = 0;
1150 }
1151 cx.notify();
1152 Task::ready(())
1153 } else {
1154 let path_position = PathWithPosition::parse_str(&raw_query);
1155
1156 let query = FileSearchQuery {
1157 raw_query: raw_query.trim().to_owned(),
1158 file_query_end: if path_position.path.to_str().unwrap_or(raw_query) == raw_query {
1159 None
1160 } else {
1161 // Safe to unwrap as we won't get here when the unwrap in if fails
1162 Some(path_position.path.to_str().unwrap().len())
1163 },
1164 path_position,
1165 };
1166
1167 if Path::new(query.path_query()).is_absolute() {
1168 self.lookup_absolute_path(query, window, cx)
1169 } else {
1170 self.spawn_search(query, window, cx)
1171 }
1172 }
1173 }
1174
1175 fn confirm(
1176 &mut self,
1177 secondary: bool,
1178 window: &mut Window,
1179 cx: &mut Context<Picker<FileFinderDelegate>>,
1180 ) {
1181 if let Some(m) = self.matches.get(self.selected_index()) {
1182 if let Some(workspace) = self.workspace.upgrade() {
1183 let open_task = workspace.update(cx, |workspace, cx| {
1184 let split_or_open =
1185 |workspace: &mut Workspace,
1186 project_path,
1187 window: &mut Window,
1188 cx: &mut Context<Workspace>| {
1189 let allow_preview =
1190 PreviewTabsSettings::get_global(cx).enable_preview_from_file_finder;
1191 if secondary {
1192 workspace.split_path_preview(
1193 project_path,
1194 allow_preview,
1195 None,
1196 window,
1197 cx,
1198 )
1199 } else {
1200 workspace.open_path_preview(
1201 project_path,
1202 None,
1203 true,
1204 allow_preview,
1205 true,
1206 window,
1207 cx,
1208 )
1209 }
1210 };
1211 match &m {
1212 Match::History { path, .. } => {
1213 let worktree_id = path.project.worktree_id;
1214 if workspace
1215 .project()
1216 .read(cx)
1217 .worktree_for_id(worktree_id, cx)
1218 .is_some()
1219 {
1220 split_or_open(
1221 workspace,
1222 ProjectPath {
1223 worktree_id,
1224 path: Arc::clone(&path.project.path),
1225 },
1226 window,
1227 cx,
1228 )
1229 } else {
1230 match path.absolute.as_ref() {
1231 Some(abs_path) => {
1232 if secondary {
1233 workspace.split_abs_path(
1234 abs_path.to_path_buf(),
1235 false,
1236 window,
1237 cx,
1238 )
1239 } else {
1240 workspace.open_abs_path(
1241 abs_path.to_path_buf(),
1242 OpenOptions {
1243 visible: Some(OpenVisible::None),
1244 ..Default::default()
1245 },
1246 window,
1247 cx,
1248 )
1249 }
1250 }
1251 None => split_or_open(
1252 workspace,
1253 ProjectPath {
1254 worktree_id,
1255 path: Arc::clone(&path.project.path),
1256 },
1257 window,
1258 cx,
1259 ),
1260 }
1261 }
1262 }
1263 Match::Search(m) => split_or_open(
1264 workspace,
1265 ProjectPath {
1266 worktree_id: WorktreeId::from_usize(m.0.worktree_id),
1267 path: m.0.path.clone(),
1268 },
1269 window,
1270 cx,
1271 ),
1272 }
1273 });
1274
1275 let row = self
1276 .latest_search_query
1277 .as_ref()
1278 .and_then(|query| query.path_position.row)
1279 .map(|row| row.saturating_sub(1));
1280 let col = self
1281 .latest_search_query
1282 .as_ref()
1283 .and_then(|query| query.path_position.column)
1284 .unwrap_or(0)
1285 .saturating_sub(1);
1286 let finder = self.file_finder.clone();
1287
1288 cx.spawn_in(window, |_, mut cx| async move {
1289 let item = open_task.await.notify_async_err(&mut cx)?;
1290 if let Some(row) = row {
1291 if let Some(active_editor) = item.downcast::<Editor>() {
1292 active_editor
1293 .downgrade()
1294 .update_in(&mut cx, |editor, window, cx| {
1295 editor.go_to_singleton_buffer_point(
1296 Point::new(row, col),
1297 window,
1298 cx,
1299 );
1300 })
1301 .log_err();
1302 }
1303 }
1304 finder.update(&mut cx, |_, cx| cx.emit(DismissEvent)).ok()?;
1305
1306 Some(())
1307 })
1308 .detach();
1309 }
1310 }
1311 }
1312
1313 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<FileFinderDelegate>>) {
1314 self.file_finder
1315 .update(cx, |_, cx| cx.emit(DismissEvent))
1316 .log_err();
1317 }
1318
1319 fn render_match(
1320 &self,
1321 ix: usize,
1322 selected: bool,
1323 window: &mut Window,
1324 cx: &mut Context<Picker<Self>>,
1325 ) -> Option<Self::ListItem> {
1326 let settings = FileFinderSettings::get_global(cx);
1327
1328 let path_match = self
1329 .matches
1330 .get(ix)
1331 .expect("Invalid matches state: no element for index {ix}");
1332
1333 let history_icon = match &path_match {
1334 Match::History { .. } => Icon::new(IconName::HistoryRerun)
1335 .color(Color::Muted)
1336 .size(IconSize::Small)
1337 .into_any_element(),
1338 Match::Search(_) => v_flex()
1339 .flex_none()
1340 .size(IconSize::Small.rems())
1341 .into_any_element(),
1342 };
1343 let (file_name_label, full_path_label) = self.labels_for_match(path_match, window, cx, ix);
1344
1345 let file_icon = maybe!({
1346 if !settings.file_icons {
1347 return None;
1348 }
1349 let file_name = path_match.path().file_name()?;
1350 let icon = FileIcons::get_icon(file_name.as_ref(), cx)?;
1351 Some(Icon::from_path(icon).color(Color::Muted))
1352 });
1353
1354 Some(
1355 ListItem::new(ix)
1356 .spacing(ListItemSpacing::Sparse)
1357 .start_slot::<Icon>(file_icon)
1358 .end_slot::<AnyElement>(history_icon)
1359 .inset(true)
1360 .toggle_state(selected)
1361 .child(
1362 h_flex()
1363 .gap_2()
1364 .py_px()
1365 .child(file_name_label)
1366 .child(full_path_label),
1367 ),
1368 )
1369 }
1370
1371 fn render_footer(&self, _: &mut Window, cx: &mut Context<Picker<Self>>) -> Option<AnyElement> {
1372 let context = self.focus_handle.clone();
1373 Some(
1374 h_flex()
1375 .w_full()
1376 .p_2()
1377 .gap_2()
1378 .justify_end()
1379 .border_t_1()
1380 .border_color(cx.theme().colors().border_variant)
1381 .child(
1382 Button::new("open-selection", "Open").on_click(|_, window, cx| {
1383 window.dispatch_action(menu::Confirm.boxed_clone(), cx)
1384 }),
1385 )
1386 .child(
1387 PopoverMenu::new("menu-popover")
1388 .with_handle(self.popover_menu_handle.clone())
1389 .attach(gpui::Corner::TopRight)
1390 .anchor(gpui::Corner::BottomRight)
1391 .trigger(
1392 Button::new("actions-trigger", "Split…")
1393 .selected_label_color(Color::Accent),
1394 )
1395 .menu({
1396 move |window, cx| {
1397 Some(ContextMenu::build(window, cx, {
1398 let context = context.clone();
1399 move |menu, _, _| {
1400 menu.context(context)
1401 .action("Split Left", pane::SplitLeft.boxed_clone())
1402 .action("Split Right", pane::SplitRight.boxed_clone())
1403 .action("Split Up", pane::SplitUp.boxed_clone())
1404 .action("Split Down", pane::SplitDown.boxed_clone())
1405 }
1406 }))
1407 }
1408 }),
1409 )
1410 .into_any(),
1411 )
1412 }
1413}
1414
1415#[derive(Clone, Debug, PartialEq, Eq)]
1416struct PathComponentSlice<'a> {
1417 path: Cow<'a, Path>,
1418 path_str: Cow<'a, str>,
1419 component_ranges: Vec<(Component<'a>, Range<usize>)>,
1420}
1421
1422impl<'a> PathComponentSlice<'a> {
1423 fn new(path: &'a str) -> Self {
1424 let trimmed_path = Path::new(path).components().as_path().as_os_str();
1425 let mut component_ranges = Vec::new();
1426 let mut components = Path::new(trimmed_path).components();
1427 let len = trimmed_path.as_encoded_bytes().len();
1428 let mut pos = 0;
1429 while let Some(component) = components.next() {
1430 component_ranges.push((component, pos..0));
1431 pos = len - components.as_path().as_os_str().as_encoded_bytes().len();
1432 }
1433 for ((_, range), ancestor) in component_ranges
1434 .iter_mut()
1435 .rev()
1436 .zip(Path::new(trimmed_path).ancestors())
1437 {
1438 range.end = ancestor.as_os_str().as_encoded_bytes().len();
1439 }
1440 Self {
1441 path: Cow::Borrowed(Path::new(path)),
1442 path_str: Cow::Borrowed(path),
1443 component_ranges,
1444 }
1445 }
1446
1447 fn elision_range(&self, budget: usize, matches: &[usize]) -> Option<Range<usize>> {
1448 let eligible_range = {
1449 assert!(matches.windows(2).all(|w| w[0] <= w[1]));
1450 let mut matches = matches.iter().copied().peekable();
1451 let mut longest: Option<Range<usize>> = None;
1452 let mut cur = 0..0;
1453 let mut seen_normal = false;
1454 for (i, (component, range)) in self.component_ranges.iter().enumerate() {
1455 let is_normal = matches!(component, Component::Normal(_));
1456 let is_first_normal = is_normal && !seen_normal;
1457 seen_normal |= is_normal;
1458 let is_last = i == self.component_ranges.len() - 1;
1459 let contains_match = matches.peek().is_some_and(|mat| range.contains(mat));
1460 if contains_match {
1461 matches.next();
1462 }
1463 if is_first_normal || is_last || !is_normal || contains_match {
1464 if longest
1465 .as_ref()
1466 .is_none_or(|old| old.end - old.start <= cur.end - cur.start)
1467 {
1468 longest = Some(cur);
1469 }
1470 cur = i + 1..i + 1;
1471 } else {
1472 cur.end = i + 1;
1473 }
1474 }
1475 if longest
1476 .as_ref()
1477 .is_none_or(|old| old.end - old.start <= cur.end - cur.start)
1478 {
1479 longest = Some(cur);
1480 }
1481 longest
1482 };
1483
1484 let eligible_range = eligible_range?;
1485 assert!(eligible_range.start <= eligible_range.end);
1486 if eligible_range.is_empty() {
1487 return None;
1488 }
1489
1490 let elided_range: Range<usize> = {
1491 let byte_range = self.component_ranges[eligible_range.start].1.start
1492 ..self.component_ranges[eligible_range.end - 1].1.end;
1493 let midpoint = self.path_str.len() / 2;
1494 let distance_from_start = byte_range.start.abs_diff(midpoint);
1495 let distance_from_end = byte_range.end.abs_diff(midpoint);
1496 let pick_from_end = distance_from_start > distance_from_end;
1497 let mut len_with_elision = self.path_str.len();
1498 let mut i = eligible_range.start;
1499 while i < eligible_range.end {
1500 let x = if pick_from_end {
1501 eligible_range.end - i + eligible_range.start - 1
1502 } else {
1503 i
1504 };
1505 len_with_elision -= self.component_ranges[x]
1506 .0
1507 .as_os_str()
1508 .as_encoded_bytes()
1509 .len()
1510 + 1;
1511 if len_with_elision <= budget {
1512 break;
1513 }
1514 i += 1;
1515 }
1516 if len_with_elision > budget {
1517 return None;
1518 } else if pick_from_end {
1519 let x = eligible_range.end - i + eligible_range.start - 1;
1520 x..eligible_range.end
1521 } else {
1522 let x = i;
1523 eligible_range.start..x + 1
1524 }
1525 };
1526
1527 let byte_range = self.component_ranges[elided_range.start].1.start
1528 ..self.component_ranges[elided_range.end - 1].1.end;
1529 Some(byte_range)
1530 }
1531}