file_finder.rs

   1#[cfg(test)]
   2mod file_finder_tests;
   3
   4use collections::{HashMap, HashSet};
   5use editor::{scroll::Autoscroll, Bias, Editor};
   6use fuzzy::{CharBag, PathMatch, PathMatchCandidate};
   7use gpui::{
   8    actions, rems, Action, AppContext, DismissEvent, EventEmitter, FocusHandle, FocusableView,
   9    Model, Modifiers, ModifiersChangedEvent, ParentElement, Render, Styled, Task, View,
  10    ViewContext, VisualContext, WeakView,
  11};
  12use itertools::Itertools;
  13use picker::{Picker, PickerDelegate};
  14use project::{PathMatchCandidateSet, Project, ProjectPath, WorktreeId};
  15use settings::Settings;
  16use std::{
  17    cmp,
  18    path::{Path, PathBuf},
  19    sync::{
  20        atomic::{self, AtomicBool},
  21        Arc,
  22    },
  23};
  24use text::Point;
  25use ui::{prelude::*, HighlightedLabel, ListItem, ListItemSpacing};
  26use util::{paths::PathLikeWithPosition, post_inc, ResultExt};
  27use workspace::{item::PreviewTabsSettings, ModalView, Workspace};
  28
  29actions!(file_finder, [Toggle, SelectPrev]);
  30
  31impl ModalView for FileFinder {}
  32
  33pub struct FileFinder {
  34    picker: View<Picker<FileFinderDelegate>>,
  35    init_modifiers: Option<Modifiers>,
  36}
  37
  38pub fn init(cx: &mut AppContext) {
  39    cx.observe_new_views(FileFinder::register).detach();
  40}
  41
  42impl FileFinder {
  43    fn register(workspace: &mut Workspace, _: &mut ViewContext<Workspace>) {
  44        workspace.register_action(|workspace, _: &Toggle, cx| {
  45            let Some(file_finder) = workspace.active_modal::<Self>(cx) else {
  46                Self::open(workspace, cx);
  47                return;
  48            };
  49
  50            file_finder.update(cx, |file_finder, cx| {
  51                file_finder.init_modifiers = Some(cx.modifiers());
  52                file_finder.picker.update(cx, |picker, cx| {
  53                    picker.cycle_selection(cx);
  54                });
  55            });
  56        });
  57    }
  58
  59    fn open(workspace: &mut Workspace, cx: &mut ViewContext<Workspace>) {
  60        let project = workspace.project().read(cx);
  61
  62        let currently_opened_path = workspace
  63            .active_item(cx)
  64            .and_then(|item| item.project_path(cx))
  65            .map(|project_path| {
  66                let abs_path = project
  67                    .worktree_for_id(project_path.worktree_id, cx)
  68                    .map(|worktree| worktree.read(cx).abs_path().join(&project_path.path));
  69                FoundPath::new(project_path, abs_path)
  70            });
  71
  72        let history_items = workspace
  73            .recent_navigation_history(Some(MAX_RECENT_SELECTIONS), cx)
  74            .into_iter()
  75            .filter(|(_, history_abs_path)| match history_abs_path {
  76                Some(abs_path) => history_file_exists(abs_path),
  77                None => true,
  78            })
  79            .map(|(history_path, abs_path)| FoundPath::new(history_path, abs_path))
  80            .collect::<Vec<_>>();
  81
  82        let project = workspace.project().clone();
  83        let weak_workspace = cx.view().downgrade();
  84        workspace.toggle_modal(cx, |cx| {
  85            let delegate = FileFinderDelegate::new(
  86                cx.view().downgrade(),
  87                weak_workspace,
  88                project,
  89                currently_opened_path,
  90                history_items,
  91                cx,
  92            );
  93
  94            FileFinder::new(delegate, cx)
  95        });
  96    }
  97
  98    fn new(delegate: FileFinderDelegate, cx: &mut ViewContext<Self>) -> Self {
  99        Self {
 100            picker: cx.new_view(|cx| Picker::uniform_list(delegate, cx)),
 101            init_modifiers: cx.modifiers().modified().then_some(cx.modifiers()),
 102        }
 103    }
 104
 105    fn handle_modifiers_changed(
 106        &mut self,
 107        event: &ModifiersChangedEvent,
 108        cx: &mut ViewContext<Self>,
 109    ) {
 110        let Some(init_modifiers) = self.init_modifiers.take() else {
 111            return;
 112        };
 113        if self.picker.read(cx).delegate.has_changed_selected_index {
 114            if !event.modified() || !init_modifiers.is_subset_of(&event) {
 115                self.init_modifiers = None;
 116                cx.dispatch_action(menu::Confirm.boxed_clone());
 117            }
 118        }
 119    }
 120
 121    fn handle_select_prev(&mut self, _: &SelectPrev, cx: &mut ViewContext<Self>) {
 122        self.init_modifiers = Some(cx.modifiers());
 123        cx.dispatch_action(Box::new(menu::SelectPrev));
 124    }
 125}
 126
 127impl EventEmitter<DismissEvent> for FileFinder {}
 128
 129impl FocusableView for FileFinder {
 130    fn focus_handle(&self, cx: &AppContext) -> FocusHandle {
 131        self.picker.focus_handle(cx)
 132    }
 133}
 134
 135impl Render for FileFinder {
 136    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
 137        v_flex()
 138            .key_context("FileFinder")
 139            .w(rems(34.))
 140            .on_modifiers_changed(cx.listener(Self::handle_modifiers_changed))
 141            .on_action(cx.listener(Self::handle_select_prev))
 142            .child(self.picker.clone())
 143    }
 144}
 145
 146pub struct FileFinderDelegate {
 147    file_finder: WeakView<FileFinder>,
 148    workspace: WeakView<Workspace>,
 149    project: Model<Project>,
 150    search_count: usize,
 151    latest_search_id: usize,
 152    latest_search_did_cancel: bool,
 153    latest_search_query: Option<PathLikeWithPosition<FileSearchQuery>>,
 154    currently_opened_path: Option<FoundPath>,
 155    matches: Matches,
 156    selected_index: usize,
 157    has_changed_selected_index: bool,
 158    cancel_flag: Arc<AtomicBool>,
 159    history_items: Vec<FoundPath>,
 160}
 161
 162/// Use a custom ordering for file finder: the regular one
 163/// defines max element with the highest score and the latest alphanumerical path (in case of a tie on other params), e.g:
 164/// `[{score: 0.5, path = "c/d" }, { score: 0.5, path = "/a/b" }]`
 165///
 166/// In the file finder, we would prefer to have the max element with the highest score and the earliest alphanumerical path, e.g:
 167/// `[{ score: 0.5, path = "/a/b" }, {score: 0.5, path = "c/d" }]`
 168/// as the files are shown in the project panel lists.
 169#[derive(Debug, Clone, PartialEq, Eq)]
 170struct ProjectPanelOrdMatch(PathMatch);
 171
 172impl Ord for ProjectPanelOrdMatch {
 173    fn cmp(&self, other: &Self) -> cmp::Ordering {
 174        self.0
 175            .score
 176            .partial_cmp(&other.0.score)
 177            .unwrap_or(cmp::Ordering::Equal)
 178            .then_with(|| self.0.worktree_id.cmp(&other.0.worktree_id))
 179            .then_with(|| {
 180                other
 181                    .0
 182                    .distance_to_relative_ancestor
 183                    .cmp(&self.0.distance_to_relative_ancestor)
 184            })
 185            .then_with(|| self.0.path.cmp(&other.0.path).reverse())
 186    }
 187}
 188
 189impl PartialOrd for ProjectPanelOrdMatch {
 190    fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
 191        Some(self.cmp(other))
 192    }
 193}
 194
 195#[derive(Debug, Default)]
 196struct Matches {
 197    history: Vec<(FoundPath, Option<ProjectPanelOrdMatch>)>,
 198    search: Vec<ProjectPanelOrdMatch>,
 199}
 200
 201#[derive(Debug)]
 202enum Match<'a> {
 203    History(&'a FoundPath, Option<&'a ProjectPanelOrdMatch>),
 204    Search(&'a ProjectPanelOrdMatch),
 205}
 206
 207impl Matches {
 208    fn len(&self) -> usize {
 209        self.history.len() + self.search.len()
 210    }
 211
 212    fn get(&self, index: usize) -> Option<Match<'_>> {
 213        if index < self.history.len() {
 214            self.history
 215                .get(index)
 216                .map(|(path, path_match)| Match::History(path, path_match.as_ref()))
 217        } else {
 218            self.search
 219                .get(index - self.history.len())
 220                .map(Match::Search)
 221        }
 222    }
 223
 224    fn push_new_matches(
 225        &mut self,
 226        history_items: &Vec<FoundPath>,
 227        currently_opened: Option<&FoundPath>,
 228        query: &PathLikeWithPosition<FileSearchQuery>,
 229        new_search_matches: impl Iterator<Item = ProjectPanelOrdMatch>,
 230        extend_old_matches: bool,
 231    ) {
 232        let matching_history_paths =
 233            matching_history_item_paths(history_items, currently_opened, query);
 234        let new_search_matches = new_search_matches
 235            .filter(|path_match| !matching_history_paths.contains_key(&path_match.0.path));
 236
 237        self.set_new_history(
 238            currently_opened,
 239            Some(&matching_history_paths),
 240            history_items,
 241        );
 242        if extend_old_matches {
 243            self.search
 244                .retain(|path_match| !matching_history_paths.contains_key(&path_match.0.path));
 245        } else {
 246            self.search.clear();
 247        }
 248        util::extend_sorted(&mut self.search, new_search_matches, 100, |a, b| b.cmp(a));
 249    }
 250
 251    fn set_new_history<'a>(
 252        &mut self,
 253        currently_opened: Option<&'a FoundPath>,
 254        query_matches: Option<&'a HashMap<Arc<Path>, ProjectPanelOrdMatch>>,
 255        history_items: impl IntoIterator<Item = &'a FoundPath> + 'a,
 256    ) {
 257        let mut processed_paths = HashSet::default();
 258        self.history = history_items
 259            .into_iter()
 260            .chain(currently_opened)
 261            .filter(|&path| processed_paths.insert(path))
 262            .filter_map(|history_item| match &query_matches {
 263                Some(query_matches) => Some((
 264                    history_item.clone(),
 265                    Some(query_matches.get(&history_item.project.path)?.clone()),
 266                )),
 267                None => Some((history_item.clone(), None)),
 268            })
 269            .enumerate()
 270            .sorted_by(
 271                |(index_a, (path_a, match_a)), (index_b, (path_b, match_b))| match (
 272                    Some(path_a) == currently_opened,
 273                    Some(path_b) == currently_opened,
 274                ) {
 275                    // bubble currently opened files to the top
 276                    (true, false) => cmp::Ordering::Less,
 277                    (false, true) => cmp::Ordering::Greater,
 278                    // arrange the files by their score (best score on top) and by their occurrence in the history
 279                    // (history items visited later are on the top)
 280                    _ => match_b.cmp(match_a).then(index_a.cmp(index_b)),
 281                },
 282            )
 283            .map(|(_, paths)| paths)
 284            .collect();
 285    }
 286}
 287
 288fn matching_history_item_paths(
 289    history_items: &Vec<FoundPath>,
 290    currently_opened: Option<&FoundPath>,
 291    query: &PathLikeWithPosition<FileSearchQuery>,
 292) -> HashMap<Arc<Path>, ProjectPanelOrdMatch> {
 293    let history_items_by_worktrees = history_items
 294        .iter()
 295        .chain(currently_opened)
 296        .filter_map(|found_path| {
 297            let candidate = PathMatchCandidate {
 298                path: &found_path.project.path,
 299                // Only match history items names, otherwise their paths may match too many queries, producing false positives.
 300                // E.g. `foo` would match both `something/foo/bar.rs` and `something/foo/foo.rs` and if the former is a history item,
 301                // it would be shown first always, despite the latter being a better match.
 302                char_bag: CharBag::from_iter(
 303                    found_path
 304                        .project
 305                        .path
 306                        .file_name()?
 307                        .to_string_lossy()
 308                        .to_lowercase()
 309                        .chars(),
 310                ),
 311            };
 312            Some((found_path.project.worktree_id, candidate))
 313        })
 314        .fold(
 315            HashMap::default(),
 316            |mut candidates, (worktree_id, new_candidate)| {
 317                candidates
 318                    .entry(worktree_id)
 319                    .or_insert_with(Vec::new)
 320                    .push(new_candidate);
 321                candidates
 322            },
 323        );
 324    let mut matching_history_paths = HashMap::default();
 325    for (worktree, candidates) in history_items_by_worktrees {
 326        let max_results = candidates.len() + 1;
 327        matching_history_paths.extend(
 328            fuzzy::match_fixed_path_set(
 329                candidates,
 330                worktree.to_usize(),
 331                query.path_like.path_query(),
 332                false,
 333                max_results,
 334            )
 335            .into_iter()
 336            .map(|path_match| {
 337                (
 338                    Arc::clone(&path_match.path),
 339                    ProjectPanelOrdMatch(path_match),
 340                )
 341            }),
 342        );
 343    }
 344    matching_history_paths
 345}
 346
 347#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 348struct FoundPath {
 349    project: ProjectPath,
 350    absolute: Option<PathBuf>,
 351}
 352
 353impl FoundPath {
 354    fn new(project: ProjectPath, absolute: Option<PathBuf>) -> Self {
 355        Self { project, absolute }
 356    }
 357}
 358
 359const MAX_RECENT_SELECTIONS: usize = 20;
 360
 361#[cfg(not(test))]
 362fn history_file_exists(abs_path: &PathBuf) -> bool {
 363    abs_path.exists()
 364}
 365
 366#[cfg(test)]
 367fn history_file_exists(abs_path: &PathBuf) -> bool {
 368    !abs_path.ends_with("nonexistent.rs")
 369}
 370
 371pub enum Event {
 372    Selected(ProjectPath),
 373    Dismissed,
 374}
 375
 376#[derive(Debug, Clone)]
 377struct FileSearchQuery {
 378    raw_query: String,
 379    file_query_end: Option<usize>,
 380}
 381
 382impl FileSearchQuery {
 383    fn path_query(&self) -> &str {
 384        match self.file_query_end {
 385            Some(file_path_end) => &self.raw_query[..file_path_end],
 386            None => &self.raw_query,
 387        }
 388    }
 389}
 390
 391impl FileFinderDelegate {
 392    fn new(
 393        file_finder: WeakView<FileFinder>,
 394        workspace: WeakView<Workspace>,
 395        project: Model<Project>,
 396        currently_opened_path: Option<FoundPath>,
 397        history_items: Vec<FoundPath>,
 398        cx: &mut ViewContext<FileFinder>,
 399    ) -> Self {
 400        Self::subscribe_to_updates(&project, cx);
 401        Self {
 402            file_finder,
 403            workspace,
 404            project,
 405            search_count: 0,
 406            latest_search_id: 0,
 407            latest_search_did_cancel: false,
 408            latest_search_query: None,
 409            currently_opened_path,
 410            matches: Matches::default(),
 411            has_changed_selected_index: false,
 412            selected_index: 0,
 413            cancel_flag: Arc::new(AtomicBool::new(false)),
 414            history_items,
 415        }
 416    }
 417
 418    fn subscribe_to_updates(project: &Model<Project>, cx: &mut ViewContext<FileFinder>) {
 419        cx.subscribe(project, |file_finder, _, event, cx| {
 420            match event {
 421                project::Event::WorktreeUpdatedEntries(_, _)
 422                | project::Event::WorktreeAdded
 423                | project::Event::WorktreeRemoved(_) => file_finder
 424                    .picker
 425                    .update(cx, |picker, cx| picker.refresh(cx)),
 426                _ => {}
 427            };
 428        })
 429        .detach();
 430    }
 431
 432    fn spawn_search(
 433        &mut self,
 434        query: PathLikeWithPosition<FileSearchQuery>,
 435        cx: &mut ViewContext<Picker<Self>>,
 436    ) -> Task<()> {
 437        let relative_to = self
 438            .currently_opened_path
 439            .as_ref()
 440            .map(|found_path| Arc::clone(&found_path.project.path));
 441        let worktrees = self
 442            .project
 443            .read(cx)
 444            .visible_worktrees(cx)
 445            .collect::<Vec<_>>();
 446        let include_root_name = worktrees.len() > 1;
 447        let candidate_sets = worktrees
 448            .into_iter()
 449            .map(|worktree| {
 450                let worktree = worktree.read(cx);
 451                PathMatchCandidateSet {
 452                    snapshot: worktree.snapshot(),
 453                    include_ignored: worktree
 454                        .root_entry()
 455                        .map_or(false, |entry| entry.is_ignored),
 456                    include_root_name,
 457                }
 458            })
 459            .collect::<Vec<_>>();
 460
 461        let search_id = util::post_inc(&mut self.search_count);
 462        self.cancel_flag.store(true, atomic::Ordering::Relaxed);
 463        self.cancel_flag = Arc::new(AtomicBool::new(false));
 464        let cancel_flag = self.cancel_flag.clone();
 465        cx.spawn(|picker, mut cx| async move {
 466            let matches = fuzzy::match_path_sets(
 467                candidate_sets.as_slice(),
 468                query.path_like.path_query(),
 469                relative_to,
 470                false,
 471                100,
 472                &cancel_flag,
 473                cx.background_executor().clone(),
 474            )
 475            .await
 476            .into_iter()
 477            .map(ProjectPanelOrdMatch);
 478            let did_cancel = cancel_flag.load(atomic::Ordering::Relaxed);
 479            picker
 480                .update(&mut cx, |picker, cx| {
 481                    picker
 482                        .delegate
 483                        .set_search_matches(search_id, did_cancel, query, matches, cx)
 484                })
 485                .log_err();
 486        })
 487    }
 488
 489    fn set_search_matches(
 490        &mut self,
 491        search_id: usize,
 492        did_cancel: bool,
 493        query: PathLikeWithPosition<FileSearchQuery>,
 494        matches: impl IntoIterator<Item = ProjectPanelOrdMatch>,
 495        cx: &mut ViewContext<Picker<Self>>,
 496    ) {
 497        if search_id >= self.latest_search_id {
 498            self.latest_search_id = search_id;
 499            let extend_old_matches = self.latest_search_did_cancel
 500                && Some(query.path_like.path_query())
 501                    == self
 502                        .latest_search_query
 503                        .as_ref()
 504                        .map(|query| query.path_like.path_query());
 505            self.matches.push_new_matches(
 506                &self.history_items,
 507                self.currently_opened_path.as_ref(),
 508                &query,
 509                matches.into_iter(),
 510                extend_old_matches,
 511            );
 512            self.latest_search_query = Some(query);
 513            self.latest_search_did_cancel = did_cancel;
 514            self.selected_index = self.calculate_selected_index();
 515            cx.notify();
 516        }
 517    }
 518
 519    fn labels_for_match(
 520        &self,
 521        path_match: Match,
 522        cx: &AppContext,
 523        ix: usize,
 524    ) -> (String, Vec<usize>, String, Vec<usize>) {
 525        let (file_name, file_name_positions, full_path, full_path_positions) = match path_match {
 526            Match::History(found_path, found_path_match) => {
 527                let worktree_id = found_path.project.worktree_id;
 528                let project_relative_path = &found_path.project.path;
 529                let has_worktree = self
 530                    .project
 531                    .read(cx)
 532                    .worktree_for_id(worktree_id, cx)
 533                    .is_some();
 534
 535                if !has_worktree {
 536                    if let Some(absolute_path) = &found_path.absolute {
 537                        return (
 538                            absolute_path
 539                                .file_name()
 540                                .map_or_else(
 541                                    || project_relative_path.to_string_lossy(),
 542                                    |file_name| file_name.to_string_lossy(),
 543                                )
 544                                .to_string(),
 545                            Vec::new(),
 546                            absolute_path.to_string_lossy().to_string(),
 547                            Vec::new(),
 548                        );
 549                    }
 550                }
 551
 552                let mut path = Arc::clone(project_relative_path);
 553                if project_relative_path.as_ref() == Path::new("") {
 554                    if let Some(absolute_path) = &found_path.absolute {
 555                        path = Arc::from(absolute_path.as_path());
 556                    }
 557                }
 558
 559                let mut path_match = PathMatch {
 560                    score: ix as f64,
 561                    positions: Vec::new(),
 562                    worktree_id: worktree_id.to_usize(),
 563                    path,
 564                    path_prefix: "".into(),
 565                    distance_to_relative_ancestor: usize::MAX,
 566                };
 567                if let Some(found_path_match) = found_path_match {
 568                    path_match
 569                        .positions
 570                        .extend(found_path_match.0.positions.iter())
 571                }
 572
 573                self.labels_for_path_match(&path_match)
 574            }
 575            Match::Search(path_match) => self.labels_for_path_match(&path_match.0),
 576        };
 577
 578        if file_name_positions.is_empty() {
 579            if let Some(user_home_path) = std::env::var("HOME").ok() {
 580                let user_home_path = user_home_path.trim();
 581                if !user_home_path.is_empty() {
 582                    if (&full_path).starts_with(user_home_path) {
 583                        return (
 584                            file_name,
 585                            file_name_positions,
 586                            full_path.replace(user_home_path, "~"),
 587                            full_path_positions,
 588                        );
 589                    }
 590                }
 591            }
 592        }
 593
 594        (
 595            file_name,
 596            file_name_positions,
 597            full_path,
 598            full_path_positions,
 599        )
 600    }
 601
 602    fn labels_for_path_match(
 603        &self,
 604        path_match: &PathMatch,
 605    ) -> (String, Vec<usize>, String, Vec<usize>) {
 606        let path = &path_match.path;
 607        let path_string = path.to_string_lossy();
 608        let full_path = [path_match.path_prefix.as_ref(), path_string.as_ref()].join("");
 609        let mut path_positions = path_match.positions.clone();
 610
 611        let file_name = path.file_name().map_or_else(
 612            || path_match.path_prefix.to_string(),
 613            |file_name| file_name.to_string_lossy().to_string(),
 614        );
 615        let file_name_start = path_match.path_prefix.len() + path_string.len() - file_name.len();
 616        let file_name_positions = path_positions
 617            .iter()
 618            .filter_map(|pos| {
 619                if pos >= &file_name_start {
 620                    Some(pos - file_name_start)
 621                } else {
 622                    None
 623                }
 624            })
 625            .collect();
 626
 627        let full_path = full_path.trim_end_matches(&file_name).to_string();
 628        path_positions.retain(|idx| *idx < full_path.len());
 629
 630        (file_name, file_name_positions, full_path, path_positions)
 631    }
 632
 633    fn lookup_absolute_path(
 634        &self,
 635        query: PathLikeWithPosition<FileSearchQuery>,
 636        cx: &mut ViewContext<'_, Picker<Self>>,
 637    ) -> Task<()> {
 638        cx.spawn(|picker, mut cx| async move {
 639            let Some((project, fs)) = picker
 640                .update(&mut cx, |picker, cx| {
 641                    let fs = Arc::clone(&picker.delegate.project.read(cx).fs());
 642                    (picker.delegate.project.clone(), fs)
 643                })
 644                .log_err()
 645            else {
 646                return;
 647            };
 648
 649            let query_path = Path::new(query.path_like.path_query());
 650            let mut path_matches = Vec::new();
 651            match fs.metadata(query_path).await.log_err() {
 652                Some(Some(_metadata)) => {
 653                    let update_result = project
 654                        .update(&mut cx, |project, cx| {
 655                            if let Some((worktree, relative_path)) =
 656                                project.find_local_worktree(query_path, cx)
 657                            {
 658                                path_matches.push(ProjectPanelOrdMatch(PathMatch {
 659                                    score: 1.0,
 660                                    positions: Vec::new(),
 661                                    worktree_id: worktree.read(cx).id().to_usize(),
 662                                    path: Arc::from(relative_path),
 663                                    path_prefix: "".into(),
 664                                    distance_to_relative_ancestor: usize::MAX,
 665                                }));
 666                            }
 667                        })
 668                        .log_err();
 669                    if update_result.is_none() {
 670                        return;
 671                    }
 672                }
 673                Some(None) => {}
 674                None => return,
 675            }
 676
 677            picker
 678                .update(&mut cx, |picker, cx| {
 679                    let picker_delegate = &mut picker.delegate;
 680                    let search_id = util::post_inc(&mut picker_delegate.search_count);
 681                    picker_delegate.set_search_matches(search_id, false, query, path_matches, cx);
 682
 683                    anyhow::Ok(())
 684                })
 685                .log_err();
 686        })
 687    }
 688
 689    /// Skips first history match (that is displayed topmost) if it's currently opened.
 690    fn calculate_selected_index(&self) -> usize {
 691        if let Some(Match::History(path, _)) = self.matches.get(0) {
 692            if Some(path) == self.currently_opened_path.as_ref() {
 693                let elements_after_first = self.matches.len() - 1;
 694                if elements_after_first > 0 {
 695                    return 1;
 696                }
 697            }
 698        }
 699        0
 700    }
 701}
 702
 703impl PickerDelegate for FileFinderDelegate {
 704    type ListItem = ListItem;
 705
 706    fn placeholder_text(&self, _cx: &mut WindowContext) -> Arc<str> {
 707        "Search project files...".into()
 708    }
 709
 710    fn match_count(&self) -> usize {
 711        self.matches.len()
 712    }
 713
 714    fn selected_index(&self) -> usize {
 715        self.selected_index
 716    }
 717
 718    fn set_selected_index(&mut self, ix: usize, cx: &mut ViewContext<Picker<Self>>) {
 719        self.has_changed_selected_index = true;
 720        self.selected_index = ix;
 721        cx.notify();
 722    }
 723
 724    fn separators_after_indices(&self) -> Vec<usize> {
 725        let history_items = self.matches.history.len();
 726        if history_items == 0 || self.matches.search.is_empty() {
 727            Vec::new()
 728        } else {
 729            vec![history_items - 1]
 730        }
 731    }
 732
 733    fn update_matches(
 734        &mut self,
 735        raw_query: String,
 736        cx: &mut ViewContext<Picker<Self>>,
 737    ) -> Task<()> {
 738        let raw_query = raw_query.replace(' ', "");
 739        let raw_query = raw_query.trim();
 740        if raw_query.is_empty() {
 741            let project = self.project.read(cx);
 742            self.latest_search_id = post_inc(&mut self.search_count);
 743            self.matches = Matches {
 744                history: Vec::new(),
 745                search: Vec::new(),
 746            };
 747            self.matches.set_new_history(
 748                self.currently_opened_path.as_ref(),
 749                None,
 750                self.history_items.iter().filter(|history_item| {
 751                    project
 752                        .worktree_for_id(history_item.project.worktree_id, cx)
 753                        .is_some()
 754                        || (project.is_local() && history_item.absolute.is_some())
 755                }),
 756            );
 757
 758            self.selected_index = 0;
 759            cx.notify();
 760            Task::ready(())
 761        } else {
 762            let query = PathLikeWithPosition::parse_str(raw_query, |path_like_str| {
 763                Ok::<_, std::convert::Infallible>(FileSearchQuery {
 764                    raw_query: raw_query.to_owned(),
 765                    file_query_end: if path_like_str == raw_query {
 766                        None
 767                    } else {
 768                        Some(path_like_str.len())
 769                    },
 770                })
 771            })
 772            .expect("infallible");
 773
 774            if Path::new(query.path_like.path_query()).is_absolute() {
 775                self.lookup_absolute_path(query, cx)
 776            } else {
 777                self.spawn_search(query, cx)
 778            }
 779        }
 780    }
 781
 782    fn confirm(&mut self, secondary: bool, cx: &mut ViewContext<Picker<FileFinderDelegate>>) {
 783        if let Some(m) = self.matches.get(self.selected_index()) {
 784            if let Some(workspace) = self.workspace.upgrade() {
 785                let open_task = workspace.update(cx, move |workspace, cx| {
 786                    let split_or_open =
 787                        |workspace: &mut Workspace,
 788                         project_path,
 789                         cx: &mut ViewContext<Workspace>| {
 790                            let allow_preview =
 791                                PreviewTabsSettings::get_global(cx).enable_preview_from_file_finder;
 792                            if secondary {
 793                                workspace.split_path_preview(project_path, allow_preview, cx)
 794                            } else {
 795                                workspace.open_path_preview(
 796                                    project_path,
 797                                    None,
 798                                    true,
 799                                    allow_preview,
 800                                    cx,
 801                                )
 802                            }
 803                        };
 804                    match m {
 805                        Match::History(history_match, _) => {
 806                            let worktree_id = history_match.project.worktree_id;
 807                            if workspace
 808                                .project()
 809                                .read(cx)
 810                                .worktree_for_id(worktree_id, cx)
 811                                .is_some()
 812                            {
 813                                split_or_open(
 814                                    workspace,
 815                                    ProjectPath {
 816                                        worktree_id,
 817                                        path: Arc::clone(&history_match.project.path),
 818                                    },
 819                                    cx,
 820                                )
 821                            } else {
 822                                match history_match.absolute.as_ref() {
 823                                    Some(abs_path) => {
 824                                        if secondary {
 825                                            workspace.split_abs_path(
 826                                                abs_path.to_path_buf(),
 827                                                false,
 828                                                cx,
 829                                            )
 830                                        } else {
 831                                            workspace.open_abs_path(
 832                                                abs_path.to_path_buf(),
 833                                                false,
 834                                                cx,
 835                                            )
 836                                        }
 837                                    }
 838                                    None => split_or_open(
 839                                        workspace,
 840                                        ProjectPath {
 841                                            worktree_id,
 842                                            path: Arc::clone(&history_match.project.path),
 843                                        },
 844                                        cx,
 845                                    ),
 846                                }
 847                            }
 848                        }
 849                        Match::Search(m) => split_or_open(
 850                            workspace,
 851                            ProjectPath {
 852                                worktree_id: WorktreeId::from_usize(m.0.worktree_id),
 853                                path: m.0.path.clone(),
 854                            },
 855                            cx,
 856                        ),
 857                    }
 858                });
 859
 860                let row = self
 861                    .latest_search_query
 862                    .as_ref()
 863                    .and_then(|query| query.row)
 864                    .map(|row| row.saturating_sub(1));
 865                let col = self
 866                    .latest_search_query
 867                    .as_ref()
 868                    .and_then(|query| query.column)
 869                    .unwrap_or(0)
 870                    .saturating_sub(1);
 871                let finder = self.file_finder.clone();
 872
 873                cx.spawn(|_, mut cx| async move {
 874                    let item = open_task.await.log_err()?;
 875                    if let Some(row) = row {
 876                        if let Some(active_editor) = item.downcast::<Editor>() {
 877                            active_editor
 878                                .downgrade()
 879                                .update(&mut cx, |editor, cx| {
 880                                    let snapshot = editor.snapshot(cx).display_snapshot;
 881                                    let point = snapshot
 882                                        .buffer_snapshot
 883                                        .clip_point(Point::new(row, col), Bias::Left);
 884                                    editor.change_selections(Some(Autoscroll::center()), cx, |s| {
 885                                        s.select_ranges([point..point])
 886                                    });
 887                                })
 888                                .log_err();
 889                        }
 890                    }
 891                    finder.update(&mut cx, |_, cx| cx.emit(DismissEvent)).ok()?;
 892
 893                    Some(())
 894                })
 895                .detach();
 896            }
 897        }
 898    }
 899
 900    fn dismissed(&mut self, cx: &mut ViewContext<Picker<FileFinderDelegate>>) {
 901        self.file_finder
 902            .update(cx, |_, cx| cx.emit(DismissEvent))
 903            .log_err();
 904    }
 905
 906    fn render_match(
 907        &self,
 908        ix: usize,
 909        selected: bool,
 910        cx: &mut ViewContext<Picker<Self>>,
 911    ) -> Option<Self::ListItem> {
 912        let path_match = self
 913            .matches
 914            .get(ix)
 915            .expect("Invalid matches state: no element for index {ix}");
 916
 917        let (file_name, file_name_positions, full_path, full_path_positions) =
 918            self.labels_for_match(path_match, cx, ix);
 919
 920        Some(
 921            ListItem::new(ix)
 922                .spacing(ListItemSpacing::Sparse)
 923                .inset(true)
 924                .selected(selected)
 925                .child(
 926                    h_flex()
 927                        .gap_2()
 928                        .py_px()
 929                        .child(HighlightedLabel::new(file_name, file_name_positions))
 930                        .child(
 931                            HighlightedLabel::new(full_path, full_path_positions)
 932                                .size(LabelSize::Small)
 933                                .color(Color::Muted),
 934                        ),
 935                ),
 936        )
 937    }
 938}
 939
 940#[cfg(test)]
 941mod tests {
 942    use super::*;
 943
 944    #[test]
 945    fn test_custom_project_search_ordering_in_file_finder() {
 946        let mut file_finder_sorted_output = vec![
 947            ProjectPanelOrdMatch(PathMatch {
 948                score: 0.5,
 949                positions: Vec::new(),
 950                worktree_id: 0,
 951                path: Arc::from(Path::new("b0.5")),
 952                path_prefix: Arc::from(""),
 953                distance_to_relative_ancestor: 0,
 954            }),
 955            ProjectPanelOrdMatch(PathMatch {
 956                score: 1.0,
 957                positions: Vec::new(),
 958                worktree_id: 0,
 959                path: Arc::from(Path::new("c1.0")),
 960                path_prefix: Arc::from(""),
 961                distance_to_relative_ancestor: 0,
 962            }),
 963            ProjectPanelOrdMatch(PathMatch {
 964                score: 1.0,
 965                positions: Vec::new(),
 966                worktree_id: 0,
 967                path: Arc::from(Path::new("a1.0")),
 968                path_prefix: Arc::from(""),
 969                distance_to_relative_ancestor: 0,
 970            }),
 971            ProjectPanelOrdMatch(PathMatch {
 972                score: 0.5,
 973                positions: Vec::new(),
 974                worktree_id: 0,
 975                path: Arc::from(Path::new("a0.5")),
 976                path_prefix: Arc::from(""),
 977                distance_to_relative_ancestor: 0,
 978            }),
 979            ProjectPanelOrdMatch(PathMatch {
 980                score: 1.0,
 981                positions: Vec::new(),
 982                worktree_id: 0,
 983                path: Arc::from(Path::new("b1.0")),
 984                path_prefix: Arc::from(""),
 985                distance_to_relative_ancestor: 0,
 986            }),
 987        ];
 988        file_finder_sorted_output.sort_by(|a, b| b.cmp(a));
 989
 990        assert_eq!(
 991            file_finder_sorted_output,
 992            vec![
 993                ProjectPanelOrdMatch(PathMatch {
 994                    score: 1.0,
 995                    positions: Vec::new(),
 996                    worktree_id: 0,
 997                    path: Arc::from(Path::new("a1.0")),
 998                    path_prefix: Arc::from(""),
 999                    distance_to_relative_ancestor: 0,
1000                }),
1001                ProjectPanelOrdMatch(PathMatch {
1002                    score: 1.0,
1003                    positions: Vec::new(),
1004                    worktree_id: 0,
1005                    path: Arc::from(Path::new("b1.0")),
1006                    path_prefix: Arc::from(""),
1007                    distance_to_relative_ancestor: 0,
1008                }),
1009                ProjectPanelOrdMatch(PathMatch {
1010                    score: 1.0,
1011                    positions: Vec::new(),
1012                    worktree_id: 0,
1013                    path: Arc::from(Path::new("c1.0")),
1014                    path_prefix: Arc::from(""),
1015                    distance_to_relative_ancestor: 0,
1016                }),
1017                ProjectPanelOrdMatch(PathMatch {
1018                    score: 0.5,
1019                    positions: Vec::new(),
1020                    worktree_id: 0,
1021                    path: Arc::from(Path::new("a0.5")),
1022                    path_prefix: Arc::from(""),
1023                    distance_to_relative_ancestor: 0,
1024                }),
1025                ProjectPanelOrdMatch(PathMatch {
1026                    score: 0.5,
1027                    positions: Vec::new(),
1028                    worktree_id: 0,
1029                    path: Arc::from(Path::new("b0.5")),
1030                    path_prefix: Arc::from(""),
1031                    distance_to_relative_ancestor: 0,
1032                }),
1033            ]
1034        );
1035    }
1036}