1mod persistence;
   2
   3use std::{
   4    cmp::{self, Reverse},
   5    collections::{HashMap, VecDeque},
   6    sync::Arc,
   7    time::Duration,
   8};
   9
  10use client::parse_zed_link;
  11use command_palette_hooks::{
  12    CommandInterceptItem, CommandInterceptResult, CommandPaletteFilter,
  13    GlobalCommandPaletteInterceptor,
  14};
  15
  16use fuzzy::{StringMatch, StringMatchCandidate};
  17use gpui::{
  18    Action, App, Context, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable,
  19    ParentElement, Render, Styled, Task, WeakEntity, Window,
  20};
  21use persistence::COMMAND_PALETTE_HISTORY;
  22use picker::Direction;
  23use picker::{Picker, PickerDelegate};
  24use postage::{sink::Sink, stream::Stream};
  25use settings::Settings;
  26use ui::{HighlightedLabel, KeyBinding, ListItem, ListItemSpacing, prelude::*};
  27use util::ResultExt;
  28use workspace::{ModalView, Workspace, WorkspaceSettings};
  29use zed_actions::{OpenZedUrl, command_palette::Toggle};
  30
  31pub fn init(cx: &mut App) {
  32    command_palette_hooks::init(cx);
  33    cx.observe_new(CommandPalette::register).detach();
  34}
  35
  36impl ModalView for CommandPalette {}
  37
  38pub struct CommandPalette {
  39    picker: Entity<Picker<CommandPaletteDelegate>>,
  40}
  41
  42/// Removes subsequent whitespace characters and double colons from the query.
  43///
  44/// This improves the likelihood of a match by either humanized name or keymap-style name.
  45pub fn normalize_action_query(input: &str) -> String {
  46    let mut result = String::with_capacity(input.len());
  47    let mut last_char = None;
  48
  49    for char in input.trim().chars() {
  50        match (last_char, char) {
  51            (Some(':'), ':') => continue,
  52            (Some(last_char), char) if last_char.is_whitespace() && char.is_whitespace() => {
  53                continue;
  54            }
  55            _ => {
  56                last_char = Some(char);
  57            }
  58        }
  59        result.push(char);
  60    }
  61
  62    result
  63}
  64
  65impl CommandPalette {
  66    fn register(
  67        workspace: &mut Workspace,
  68        _window: Option<&mut Window>,
  69        _: &mut Context<Workspace>,
  70    ) {
  71        workspace.register_action(|workspace, _: &Toggle, window, cx| {
  72            Self::toggle(workspace, "", window, cx)
  73        });
  74    }
  75
  76    pub fn toggle(
  77        workspace: &mut Workspace,
  78        query: &str,
  79        window: &mut Window,
  80        cx: &mut Context<Workspace>,
  81    ) {
  82        let Some(previous_focus_handle) = window.focused(cx) else {
  83            return;
  84        };
  85
  86        let entity = cx.weak_entity();
  87        workspace.toggle_modal(window, cx, move |window, cx| {
  88            CommandPalette::new(previous_focus_handle, query, entity, window, cx)
  89        });
  90    }
  91
  92    fn new(
  93        previous_focus_handle: FocusHandle,
  94        query: &str,
  95        entity: WeakEntity<Workspace>,
  96        window: &mut Window,
  97        cx: &mut Context<Self>,
  98    ) -> Self {
  99        let filter = CommandPaletteFilter::try_global(cx);
 100
 101        let commands = window
 102            .available_actions(cx)
 103            .into_iter()
 104            .filter_map(|action| {
 105                if filter.is_some_and(|filter| filter.is_hidden(&*action)) {
 106                    return None;
 107                }
 108
 109                Some(Command {
 110                    name: humanize_action_name(action.name()),
 111                    action,
 112                })
 113            })
 114            .collect();
 115
 116        let delegate = CommandPaletteDelegate::new(
 117            cx.entity().downgrade(),
 118            entity,
 119            commands,
 120            previous_focus_handle,
 121        );
 122
 123        let picker = cx.new(|cx| {
 124            let picker = Picker::uniform_list(delegate, window, cx);
 125            picker.set_query(query, window, cx);
 126            picker
 127        });
 128        Self { picker }
 129    }
 130
 131    pub fn set_query(&mut self, query: &str, window: &mut Window, cx: &mut Context<Self>) {
 132        self.picker
 133            .update(cx, |picker, cx| picker.set_query(query, window, cx))
 134    }
 135}
 136
 137impl EventEmitter<DismissEvent> for CommandPalette {}
 138
 139impl Focusable for CommandPalette {
 140    fn focus_handle(&self, cx: &App) -> FocusHandle {
 141        self.picker.focus_handle(cx)
 142    }
 143}
 144
 145impl Render for CommandPalette {
 146    fn render(&mut self, _window: &mut Window, _: &mut Context<Self>) -> impl IntoElement {
 147        v_flex()
 148            .key_context("CommandPalette")
 149            .w(rems(34.))
 150            .child(self.picker.clone())
 151    }
 152}
 153
 154pub struct CommandPaletteDelegate {
 155    latest_query: String,
 156    command_palette: WeakEntity<CommandPalette>,
 157    workspace: WeakEntity<Workspace>,
 158    all_commands: Vec<Command>,
 159    commands: Vec<Command>,
 160    matches: Vec<StringMatch>,
 161    selected_ix: usize,
 162    previous_focus_handle: FocusHandle,
 163    updating_matches: Option<(
 164        Task<()>,
 165        postage::dispatch::Receiver<(Vec<Command>, Vec<StringMatch>, CommandInterceptResult)>,
 166    )>,
 167    query_history: QueryHistory,
 168}
 169
 170struct Command {
 171    name: String,
 172    action: Box<dyn Action>,
 173}
 174
 175#[derive(Default)]
 176struct QueryHistory {
 177    history: Option<VecDeque<String>>,
 178    cursor: Option<usize>,
 179    prefix: Option<String>,
 180}
 181
 182impl QueryHistory {
 183    fn history(&mut self) -> &mut VecDeque<String> {
 184        self.history.get_or_insert_with(|| {
 185            COMMAND_PALETTE_HISTORY
 186                .list_recent_queries()
 187                .unwrap_or_default()
 188                .into_iter()
 189                .collect()
 190        })
 191    }
 192
 193    fn add(&mut self, query: String) {
 194        if let Some(pos) = self.history().iter().position(|h| h == &query) {
 195            self.history().remove(pos);
 196        }
 197        self.history().push_back(query);
 198        self.cursor = None;
 199        self.prefix = None;
 200    }
 201
 202    fn validate_cursor(&mut self, current_query: &str) -> Option<usize> {
 203        if let Some(pos) = self.cursor {
 204            if self.history().get(pos).map(|s| s.as_str()) != Some(current_query) {
 205                self.cursor = None;
 206                self.prefix = None;
 207            }
 208        }
 209        self.cursor
 210    }
 211
 212    fn previous(&mut self, current_query: &str) -> Option<&str> {
 213        if self.validate_cursor(current_query).is_none() {
 214            self.prefix = Some(current_query.to_string());
 215        }
 216
 217        let prefix = self.prefix.clone().unwrap_or_default();
 218        let start_index = self.cursor.unwrap_or(self.history().len());
 219
 220        for i in (0..start_index).rev() {
 221            if self
 222                .history()
 223                .get(i)
 224                .is_some_and(|e| e.starts_with(&prefix))
 225            {
 226                self.cursor = Some(i);
 227                return self.history().get(i).map(|s| s.as_str());
 228            }
 229        }
 230        None
 231    }
 232
 233    fn next(&mut self, current_query: &str) -> Option<&str> {
 234        let selected = self.validate_cursor(current_query)?;
 235        let prefix = self.prefix.clone().unwrap_or_default();
 236
 237        for i in (selected + 1)..self.history().len() {
 238            if self
 239                .history()
 240                .get(i)
 241                .is_some_and(|e| e.starts_with(&prefix))
 242            {
 243                self.cursor = Some(i);
 244                return self.history().get(i).map(|s| s.as_str());
 245            }
 246        }
 247        None
 248    }
 249
 250    fn reset_cursor(&mut self) {
 251        self.cursor = None;
 252        self.prefix = None;
 253    }
 254
 255    fn is_navigating(&self) -> bool {
 256        self.cursor.is_some()
 257    }
 258}
 259
 260impl Clone for Command {
 261    fn clone(&self) -> Self {
 262        Self {
 263            name: self.name.clone(),
 264            action: self.action.boxed_clone(),
 265        }
 266    }
 267}
 268
 269impl CommandPaletteDelegate {
 270    fn new(
 271        command_palette: WeakEntity<CommandPalette>,
 272        workspace: WeakEntity<Workspace>,
 273        commands: Vec<Command>,
 274        previous_focus_handle: FocusHandle,
 275    ) -> Self {
 276        Self {
 277            command_palette,
 278            workspace,
 279            all_commands: commands.clone(),
 280            matches: vec![],
 281            commands,
 282            selected_ix: 0,
 283            previous_focus_handle,
 284            latest_query: String::new(),
 285            updating_matches: None,
 286            query_history: Default::default(),
 287        }
 288    }
 289
 290    fn matches_updated(
 291        &mut self,
 292        query: String,
 293        mut commands: Vec<Command>,
 294        mut matches: Vec<StringMatch>,
 295        intercept_result: CommandInterceptResult,
 296        _: &mut Context<Picker<Self>>,
 297    ) {
 298        self.updating_matches.take();
 299        self.latest_query = query;
 300
 301        let mut new_matches = Vec::new();
 302
 303        for CommandInterceptItem {
 304            action,
 305            string,
 306            positions,
 307        } in intercept_result.results
 308        {
 309            if let Some(idx) = matches
 310                .iter()
 311                .position(|m| commands[m.candidate_id].action.partial_eq(&*action))
 312            {
 313                matches.remove(idx);
 314            }
 315            commands.push(Command {
 316                name: string.clone(),
 317                action,
 318            });
 319            new_matches.push(StringMatch {
 320                candidate_id: commands.len() - 1,
 321                string,
 322                positions,
 323                score: 0.0,
 324            })
 325        }
 326        if !intercept_result.exclusive {
 327            new_matches.append(&mut matches);
 328        }
 329        self.commands = commands;
 330        self.matches = new_matches;
 331        if self.matches.is_empty() {
 332            self.selected_ix = 0;
 333        } else {
 334            self.selected_ix = cmp::min(self.selected_ix, self.matches.len() - 1);
 335        }
 336    }
 337
 338    /// Hit count for each command in the palette.
 339    /// We only account for commands triggered directly via command palette and not by e.g. keystrokes because
 340    /// if a user already knows a keystroke for a command, they are unlikely to use a command palette to look for it.
 341    fn hit_counts(&self) -> HashMap<String, u16> {
 342        if let Ok(commands) = COMMAND_PALETTE_HISTORY.list_commands_used() {
 343            commands
 344                .into_iter()
 345                .map(|command| (command.command_name, command.invocations))
 346                .collect()
 347        } else {
 348            HashMap::new()
 349        }
 350    }
 351
 352    fn selected_command(&self) -> Option<&Command> {
 353        let action_ix = self
 354            .matches
 355            .get(self.selected_ix)
 356            .map(|m| m.candidate_id)
 357            .unwrap_or(self.selected_ix);
 358        // this gets called in headless tests where there are no commands loaded
 359        // so we need to return an Option here
 360        self.commands.get(action_ix)
 361    }
 362
 363    #[cfg(any(test, feature = "test-support"))]
 364    pub fn seed_history(&mut self, queries: &[&str]) {
 365        self.query_history.history = Some(queries.iter().map(|s| s.to_string()).collect());
 366    }
 367}
 368
 369impl PickerDelegate for CommandPaletteDelegate {
 370    type ListItem = ListItem;
 371
 372    fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
 373        "Execute a command...".into()
 374    }
 375
 376    fn select_history(
 377        &mut self,
 378        direction: Direction,
 379        query: &str,
 380        _window: &mut Window,
 381        _cx: &mut App,
 382    ) -> Option<String> {
 383        match direction {
 384            Direction::Up => {
 385                let should_use_history =
 386                    self.selected_ix == 0 || self.query_history.is_navigating();
 387                if should_use_history {
 388                    if let Some(query) = self.query_history.previous(query).map(|s| s.to_string()) {
 389                        return Some(query);
 390                    }
 391                }
 392            }
 393            Direction::Down => {
 394                if self.query_history.is_navigating() {
 395                    if let Some(query) = self.query_history.next(query).map(|s| s.to_string()) {
 396                        return Some(query);
 397                    } else {
 398                        let prefix = self.query_history.prefix.take().unwrap_or_default();
 399                        self.query_history.reset_cursor();
 400                        return Some(prefix);
 401                    }
 402                }
 403            }
 404        }
 405        None
 406    }
 407
 408    fn match_count(&self) -> usize {
 409        self.matches.len()
 410    }
 411
 412    fn selected_index(&self) -> usize {
 413        self.selected_ix
 414    }
 415
 416    fn set_selected_index(
 417        &mut self,
 418        ix: usize,
 419        _window: &mut Window,
 420        _: &mut Context<Picker<Self>>,
 421    ) {
 422        self.selected_ix = ix;
 423    }
 424
 425    fn update_matches(
 426        &mut self,
 427        mut query: String,
 428        window: &mut Window,
 429        cx: &mut Context<Picker<Self>>,
 430    ) -> gpui::Task<()> {
 431        let settings = WorkspaceSettings::get_global(cx);
 432        if let Some(alias) = settings.command_aliases.get(&query) {
 433            query = alias.to_string();
 434        }
 435
 436        let workspace = self.workspace.clone();
 437
 438        let intercept_task = GlobalCommandPaletteInterceptor::intercept(&query, workspace, cx);
 439
 440        let (mut tx, mut rx) = postage::dispatch::channel(1);
 441
 442        let query_str = query.as_str();
 443        let is_zed_link = parse_zed_link(query_str, cx).is_some();
 444
 445        let task = cx.background_spawn({
 446            let mut commands = self.all_commands.clone();
 447            let hit_counts = self.hit_counts();
 448            let executor = cx.background_executor().clone();
 449            let query = normalize_action_query(query_str);
 450            let query_for_link = query_str.to_string();
 451            async move {
 452                commands.sort_by_key(|action| {
 453                    (
 454                        Reverse(hit_counts.get(&action.name).cloned()),
 455                        action.name.clone(),
 456                    )
 457                });
 458
 459                let candidates = commands
 460                    .iter()
 461                    .enumerate()
 462                    .map(|(ix, command)| StringMatchCandidate::new(ix, &command.name))
 463                    .collect::<Vec<_>>();
 464
 465                let matches = fuzzy::match_strings(
 466                    &candidates,
 467                    &query,
 468                    true,
 469                    true,
 470                    10000,
 471                    &Default::default(),
 472                    executor,
 473                )
 474                .await;
 475
 476                let intercept_result = if is_zed_link {
 477                    CommandInterceptResult {
 478                        results: vec![CommandInterceptItem {
 479                            action: OpenZedUrl {
 480                                url: query_for_link.clone(),
 481                            }
 482                            .boxed_clone(),
 483                            string: query_for_link,
 484                            positions: vec![],
 485                        }],
 486                        exclusive: false,
 487                    }
 488                } else if let Some(task) = intercept_task {
 489                    task.await
 490                } else {
 491                    CommandInterceptResult::default()
 492                };
 493
 494                tx.send((commands, matches, intercept_result))
 495                    .await
 496                    .log_err();
 497            }
 498        });
 499
 500        self.updating_matches = Some((task, rx.clone()));
 501
 502        cx.spawn_in(window, async move |picker, cx| {
 503            let Some((commands, matches, intercept_result)) = rx.recv().await else {
 504                return;
 505            };
 506
 507            picker
 508                .update(cx, |picker, cx| {
 509                    picker
 510                        .delegate
 511                        .matches_updated(query, commands, matches, intercept_result, cx)
 512                })
 513                .log_err();
 514        })
 515    }
 516
 517    fn finalize_update_matches(
 518        &mut self,
 519        query: String,
 520        duration: Duration,
 521        _: &mut Window,
 522        cx: &mut Context<Picker<Self>>,
 523    ) -> bool {
 524        let Some((task, rx)) = self.updating_matches.take() else {
 525            return true;
 526        };
 527
 528        match cx
 529            .foreground_executor()
 530            .block_with_timeout(duration, rx.clone().recv())
 531        {
 532            Ok(Some((commands, matches, interceptor_result))) => {
 533                self.matches_updated(query, commands, matches, interceptor_result, cx);
 534                true
 535            }
 536            _ => {
 537                self.updating_matches = Some((task, rx));
 538                false
 539            }
 540        }
 541    }
 542
 543    fn dismissed(&mut self, _window: &mut Window, cx: &mut Context<Picker<Self>>) {
 544        self.command_palette
 545            .update(cx, |_, cx| cx.emit(DismissEvent))
 546            .log_err();
 547    }
 548
 549    fn confirm(&mut self, secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
 550        if secondary {
 551            let Some(selected_command) = self.selected_command() else {
 552                return;
 553            };
 554            let action_name = selected_command.action.name();
 555            let open_keymap = Box::new(zed_actions::ChangeKeybinding {
 556                action: action_name.to_string(),
 557            });
 558            window.dispatch_action(open_keymap, cx);
 559            self.dismissed(window, cx);
 560            return;
 561        }
 562
 563        if self.matches.is_empty() {
 564            self.dismissed(window, cx);
 565            return;
 566        }
 567
 568        if !self.latest_query.is_empty() {
 569            self.query_history.add(self.latest_query.clone());
 570            self.query_history.reset_cursor();
 571        }
 572
 573        let action_ix = self.matches[self.selected_ix].candidate_id;
 574        let command = self.commands.swap_remove(action_ix);
 575        telemetry::event!(
 576            "Action Invoked",
 577            source = "command palette",
 578            action = command.name
 579        );
 580        self.matches.clear();
 581        self.commands.clear();
 582        let command_name = command.name.clone();
 583        let latest_query = self.latest_query.clone();
 584        cx.background_spawn(async move {
 585            COMMAND_PALETTE_HISTORY
 586                .write_command_invocation(command_name, latest_query)
 587                .await
 588        })
 589        .detach_and_log_err(cx);
 590        let action = command.action;
 591        window.focus(&self.previous_focus_handle, cx);
 592        self.dismissed(window, cx);
 593        window.dispatch_action(action, cx);
 594    }
 595
 596    fn render_match(
 597        &self,
 598        ix: usize,
 599        selected: bool,
 600        _: &mut Window,
 601        cx: &mut Context<Picker<Self>>,
 602    ) -> Option<Self::ListItem> {
 603        let matching_command = self.matches.get(ix)?;
 604        let command = self.commands.get(matching_command.candidate_id)?;
 605
 606        Some(
 607            ListItem::new(ix)
 608                .inset(true)
 609                .spacing(ListItemSpacing::Sparse)
 610                .toggle_state(selected)
 611                .child(
 612                    h_flex()
 613                        .w_full()
 614                        .py_px()
 615                        .justify_between()
 616                        .child(HighlightedLabel::new(
 617                            command.name.clone(),
 618                            matching_command.positions.clone(),
 619                        ))
 620                        .child(KeyBinding::for_action_in(
 621                            &*command.action,
 622                            &self.previous_focus_handle,
 623                            cx,
 624                        )),
 625                ),
 626        )
 627    }
 628
 629    fn render_footer(
 630        &self,
 631        window: &mut Window,
 632        cx: &mut Context<Picker<Self>>,
 633    ) -> Option<AnyElement> {
 634        let selected_command = self.selected_command()?;
 635        let keybind =
 636            KeyBinding::for_action_in(&*selected_command.action, &self.previous_focus_handle, cx);
 637
 638        let focus_handle = &self.previous_focus_handle;
 639        let keybinding_buttons = if keybind.has_binding(window) {
 640            Button::new("change", "Change Keybinding…")
 641                .key_binding(
 642                    KeyBinding::for_action_in(&menu::SecondaryConfirm, focus_handle, cx)
 643                        .map(|kb| kb.size(rems_from_px(12.))),
 644                )
 645                .on_click(move |_, window, cx| {
 646                    window.dispatch_action(menu::SecondaryConfirm.boxed_clone(), cx);
 647                })
 648        } else {
 649            Button::new("add", "Add Keybinding…")
 650                .key_binding(
 651                    KeyBinding::for_action_in(&menu::SecondaryConfirm, focus_handle, cx)
 652                        .map(|kb| kb.size(rems_from_px(12.))),
 653                )
 654                .on_click(move |_, window, cx| {
 655                    window.dispatch_action(menu::SecondaryConfirm.boxed_clone(), cx);
 656                })
 657        };
 658
 659        Some(
 660            h_flex()
 661                .w_full()
 662                .p_1p5()
 663                .gap_1()
 664                .justify_end()
 665                .border_t_1()
 666                .border_color(cx.theme().colors().border_variant)
 667                .child(keybinding_buttons)
 668                .child(
 669                    Button::new("run-action", "Run")
 670                        .key_binding(
 671                            KeyBinding::for_action_in(&menu::Confirm, &focus_handle, cx)
 672                                .map(|kb| kb.size(rems_from_px(12.))),
 673                        )
 674                        .on_click(|_, window, cx| {
 675                            window.dispatch_action(menu::Confirm.boxed_clone(), cx)
 676                        }),
 677                )
 678                .into_any(),
 679        )
 680    }
 681}
 682
 683pub fn humanize_action_name(name: &str) -> String {
 684    let capacity = name.len() + name.chars().filter(|c| c.is_uppercase()).count();
 685    let mut result = String::with_capacity(capacity);
 686    for char in name.chars() {
 687        if char == ':' {
 688            if result.ends_with(':') {
 689                result.push(' ');
 690            } else {
 691                result.push(':');
 692            }
 693        } else if char == '_' {
 694            result.push(' ');
 695        } else if char.is_uppercase() {
 696            if !result.ends_with(' ') {
 697                result.push(' ');
 698            }
 699            result.extend(char.to_lowercase());
 700        } else {
 701            result.push(char);
 702        }
 703    }
 704    result
 705}
 706
 707impl std::fmt::Debug for Command {
 708    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 709        f.debug_struct("Command")
 710            .field("name", &self.name)
 711            .finish_non_exhaustive()
 712    }
 713}
 714
 715#[cfg(test)]
 716mod tests {
 717    use std::sync::Arc;
 718
 719    use super::*;
 720    use editor::Editor;
 721    use go_to_line::GoToLine;
 722    use gpui::{TestAppContext, VisualTestContext};
 723    use language::Point;
 724    use project::Project;
 725    use settings::KeymapFile;
 726    use workspace::{AppState, MultiWorkspace, Workspace};
 727
 728    #[test]
 729    fn test_humanize_action_name() {
 730        assert_eq!(
 731            humanize_action_name("editor::GoToDefinition"),
 732            "editor: go to definition"
 733        );
 734        assert_eq!(
 735            humanize_action_name("editor::Backspace"),
 736            "editor: backspace"
 737        );
 738        assert_eq!(
 739            humanize_action_name("go_to_line::Deploy"),
 740            "go to line: deploy"
 741        );
 742    }
 743
 744    #[test]
 745    fn test_normalize_query() {
 746        assert_eq!(
 747            normalize_action_query("editor: backspace"),
 748            "editor: backspace"
 749        );
 750        assert_eq!(
 751            normalize_action_query("editor:  backspace"),
 752            "editor: backspace"
 753        );
 754        assert_eq!(
 755            normalize_action_query("editor:    backspace"),
 756            "editor: backspace"
 757        );
 758        assert_eq!(
 759            normalize_action_query("editor::GoToDefinition"),
 760            "editor:GoToDefinition"
 761        );
 762        assert_eq!(
 763            normalize_action_query("editor::::GoToDefinition"),
 764            "editor:GoToDefinition"
 765        );
 766        assert_eq!(
 767            normalize_action_query("editor: :GoToDefinition"),
 768            "editor: :GoToDefinition"
 769        );
 770    }
 771
 772    #[gpui::test]
 773    async fn test_command_palette(cx: &mut TestAppContext) {
 774        persistence::COMMAND_PALETTE_HISTORY
 775            .clear_all()
 776            .await
 777            .unwrap();
 778        let app_state = init_test(cx);
 779        let project = Project::test(app_state.fs.clone(), [], cx).await;
 780        let (multi_workspace, cx) =
 781            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
 782        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
 783
 784        let editor = cx.new_window_entity(|window, cx| {
 785            let mut editor = Editor::single_line(window, cx);
 786            editor.set_text("abc", window, cx);
 787            editor
 788        });
 789
 790        workspace.update_in(cx, |workspace, window, cx| {
 791            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 792            editor.update(cx, |editor, cx| window.focus(&editor.focus_handle(cx), cx))
 793        });
 794
 795        cx.simulate_keystrokes("cmd-shift-p");
 796
 797        let palette = workspace.update(cx, |workspace, cx| {
 798            workspace
 799                .active_modal::<CommandPalette>(cx)
 800                .unwrap()
 801                .read(cx)
 802                .picker
 803                .clone()
 804        });
 805
 806        palette.read_with(cx, |palette, _| {
 807            assert!(palette.delegate.commands.len() > 5);
 808            let is_sorted =
 809                |actions: &[Command]| actions.windows(2).all(|pair| pair[0].name <= pair[1].name);
 810            assert!(is_sorted(&palette.delegate.commands));
 811        });
 812
 813        cx.simulate_input("bcksp");
 814
 815        palette.read_with(cx, |palette, _| {
 816            assert_eq!(palette.delegate.matches[0].string, "editor: backspace");
 817        });
 818
 819        cx.simulate_keystrokes("enter");
 820
 821        workspace.update(cx, |workspace, cx| {
 822            assert!(workspace.active_modal::<CommandPalette>(cx).is_none());
 823            assert_eq!(editor.read(cx).text(cx), "ab")
 824        });
 825
 826        // Add namespace filter, and redeploy the palette
 827        cx.update(|_window, cx| {
 828            CommandPaletteFilter::update_global(cx, |filter, _| {
 829                filter.hide_namespace("editor");
 830            });
 831        });
 832
 833        cx.simulate_keystrokes("cmd-shift-p");
 834        cx.simulate_input("bcksp");
 835
 836        let palette = workspace.update(cx, |workspace, cx| {
 837            workspace
 838                .active_modal::<CommandPalette>(cx)
 839                .unwrap()
 840                .read(cx)
 841                .picker
 842                .clone()
 843        });
 844        palette.read_with(cx, |palette, _| {
 845            assert!(palette.delegate.matches.is_empty())
 846        });
 847    }
 848    #[gpui::test]
 849    async fn test_normalized_matches(cx: &mut TestAppContext) {
 850        let app_state = init_test(cx);
 851        let project = Project::test(app_state.fs.clone(), [], cx).await;
 852        let (multi_workspace, cx) =
 853            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
 854        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
 855
 856        let editor = cx.new_window_entity(|window, cx| {
 857            let mut editor = Editor::single_line(window, cx);
 858            editor.set_text("abc", window, cx);
 859            editor
 860        });
 861
 862        workspace.update_in(cx, |workspace, window, cx| {
 863            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 864            editor.update(cx, |editor, cx| window.focus(&editor.focus_handle(cx), cx))
 865        });
 866
 867        // Test normalize (trimming whitespace and double colons)
 868        cx.simulate_keystrokes("cmd-shift-p");
 869
 870        let palette = workspace.update(cx, |workspace, cx| {
 871            workspace
 872                .active_modal::<CommandPalette>(cx)
 873                .unwrap()
 874                .read(cx)
 875                .picker
 876                .clone()
 877        });
 878
 879        cx.simulate_input("Editor::    Backspace");
 880        palette.read_with(cx, |palette, _| {
 881            assert_eq!(palette.delegate.matches[0].string, "editor: backspace");
 882        });
 883    }
 884
 885    #[gpui::test]
 886    async fn test_go_to_line(cx: &mut TestAppContext) {
 887        let app_state = init_test(cx);
 888        let project = Project::test(app_state.fs.clone(), [], cx).await;
 889        let (multi_workspace, cx) =
 890            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
 891        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
 892
 893        cx.simulate_keystrokes("cmd-n");
 894
 895        let editor = workspace.update(cx, |workspace, cx| {
 896            workspace.active_item_as::<Editor>(cx).unwrap()
 897        });
 898        editor.update_in(cx, |editor, window, cx| {
 899            editor.set_text("1\n2\n3\n4\n5\n6\n", window, cx)
 900        });
 901
 902        cx.simulate_keystrokes("cmd-shift-p");
 903        cx.simulate_input("go to line: Toggle");
 904        cx.simulate_keystrokes("enter");
 905
 906        workspace.update(cx, |workspace, cx| {
 907            assert!(workspace.active_modal::<GoToLine>(cx).is_some())
 908        });
 909
 910        cx.simulate_keystrokes("3 enter");
 911
 912        editor.update_in(cx, |editor, window, cx| {
 913            assert!(editor.focus_handle(cx).is_focused(window));
 914            assert_eq!(
 915                editor
 916                    .selections
 917                    .last::<Point>(&editor.display_snapshot(cx))
 918                    .range()
 919                    .start,
 920                Point::new(2, 0)
 921            );
 922        });
 923    }
 924
 925    fn init_test(cx: &mut TestAppContext) -> Arc<AppState> {
 926        cx.update(|cx| {
 927            let app_state = AppState::test(cx);
 928            theme::init(theme::LoadThemes::JustBase, cx);
 929            editor::init(cx);
 930            menu::init();
 931            go_to_line::init(cx);
 932            workspace::init(app_state.clone(), cx);
 933            init(cx);
 934            cx.bind_keys(KeymapFile::load_panic_on_failure(
 935                r#"[
 936                    {
 937                        "bindings": {
 938                            "cmd-n": "workspace::NewFile",
 939                            "enter": "menu::Confirm",
 940                            "cmd-shift-p": "command_palette::Toggle",
 941                            "up": "menu::SelectPrevious",
 942                            "down": "menu::SelectNext"
 943                        }
 944                    }
 945                ]"#,
 946                cx,
 947            ));
 948            app_state
 949        })
 950    }
 951
 952    fn open_palette_with_history(
 953        workspace: &Entity<Workspace>,
 954        history: &[&str],
 955        cx: &mut VisualTestContext,
 956    ) -> Entity<Picker<CommandPaletteDelegate>> {
 957        cx.simulate_keystrokes("cmd-shift-p");
 958        cx.run_until_parked();
 959
 960        let palette = workspace.update(cx, |workspace, cx| {
 961            workspace
 962                .active_modal::<CommandPalette>(cx)
 963                .unwrap()
 964                .read(cx)
 965                .picker
 966                .clone()
 967        });
 968
 969        palette.update(cx, |palette, _cx| {
 970            palette.delegate.seed_history(history);
 971        });
 972
 973        palette
 974    }
 975
 976    #[gpui::test]
 977    async fn test_history_navigation_basic(cx: &mut TestAppContext) {
 978        let app_state = init_test(cx);
 979        let project = Project::test(app_state.fs.clone(), [], cx).await;
 980        let (multi_workspace, cx) =
 981            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
 982        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
 983
 984        let palette = open_palette_with_history(&workspace, &["backspace", "select all"], cx);
 985
 986        // Query should be empty initially
 987        palette.read_with(cx, |palette, cx| {
 988            assert_eq!(palette.query(cx), "");
 989        });
 990
 991        // Press up - should load most recent query "select all"
 992        cx.simulate_keystrokes("up");
 993        cx.background_executor.run_until_parked();
 994        palette.read_with(cx, |palette, cx| {
 995            assert_eq!(palette.query(cx), "select all");
 996        });
 997
 998        // Press up again - should load "backspace"
 999        cx.simulate_keystrokes("up");
1000        cx.background_executor.run_until_parked();
1001        palette.read_with(cx, |palette, cx| {
1002            assert_eq!(palette.query(cx), "backspace");
1003        });
1004
1005        // Press down - should go back to "select all"
1006        cx.simulate_keystrokes("down");
1007        cx.background_executor.run_until_parked();
1008        palette.read_with(cx, |palette, cx| {
1009            assert_eq!(palette.query(cx), "select all");
1010        });
1011
1012        // Press down again - should clear query (exit history mode)
1013        cx.simulate_keystrokes("down");
1014        cx.background_executor.run_until_parked();
1015        palette.read_with(cx, |palette, cx| {
1016            assert_eq!(palette.query(cx), "");
1017        });
1018    }
1019
1020    #[gpui::test]
1021    async fn test_history_mode_exit_on_typing(cx: &mut TestAppContext) {
1022        let app_state = init_test(cx);
1023        let project = Project::test(app_state.fs.clone(), [], cx).await;
1024        let (multi_workspace, cx) =
1025            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
1026        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
1027
1028        let palette = open_palette_with_history(&workspace, &["backspace"], cx);
1029
1030        // Press up to enter history mode
1031        cx.simulate_keystrokes("up");
1032        cx.background_executor.run_until_parked();
1033        palette.read_with(cx, |palette, cx| {
1034            assert_eq!(palette.query(cx), "backspace");
1035        });
1036
1037        // Type something - should append to the history query
1038        cx.simulate_input("x");
1039        cx.background_executor.run_until_parked();
1040        palette.read_with(cx, |palette, cx| {
1041            assert_eq!(palette.query(cx), "backspacex");
1042        });
1043    }
1044
1045    #[gpui::test]
1046    async fn test_history_navigation_with_suggestions(cx: &mut TestAppContext) {
1047        let app_state = init_test(cx);
1048        let project = Project::test(app_state.fs.clone(), [], cx).await;
1049        let (multi_workspace, cx) =
1050            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
1051        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
1052
1053        let palette = open_palette_with_history(&workspace, &["editor: close", "editor: open"], cx);
1054
1055        // Open palette with a query that has multiple matches
1056        cx.simulate_input("editor");
1057        cx.background_executor.run_until_parked();
1058
1059        // Should have multiple matches, selected_ix should be 0
1060        palette.read_with(cx, |palette, _| {
1061            assert!(palette.delegate.matches.len() > 1);
1062            assert_eq!(palette.delegate.selected_ix, 0);
1063        });
1064
1065        // Press down - should navigate to next suggestion (not history)
1066        cx.simulate_keystrokes("down");
1067        cx.background_executor.run_until_parked();
1068        palette.read_with(cx, |palette, _| {
1069            assert_eq!(palette.delegate.selected_ix, 1);
1070        });
1071
1072        // Press up - should go back to first suggestion
1073        cx.simulate_keystrokes("up");
1074        cx.background_executor.run_until_parked();
1075        palette.read_with(cx, |palette, _| {
1076            assert_eq!(palette.delegate.selected_ix, 0);
1077        });
1078
1079        // Press up again at top - should enter history mode and show previous query
1080        // that matches the "editor" prefix
1081        cx.simulate_keystrokes("up");
1082        cx.background_executor.run_until_parked();
1083        palette.read_with(cx, |palette, cx| {
1084            assert_eq!(palette.query(cx), "editor: open");
1085        });
1086    }
1087
1088    #[gpui::test]
1089    async fn test_history_prefix_search(cx: &mut TestAppContext) {
1090        let app_state = init_test(cx);
1091        let project = Project::test(app_state.fs.clone(), [], cx).await;
1092        let (multi_workspace, cx) =
1093            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
1094        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
1095
1096        let palette = open_palette_with_history(
1097            &workspace,
1098            &["open file", "select all", "select line", "backspace"],
1099            cx,
1100        );
1101
1102        // Type "sel" as a prefix
1103        cx.simulate_input("sel");
1104        cx.background_executor.run_until_parked();
1105
1106        // Press up - should get "select line" (most recent matching "sel")
1107        cx.simulate_keystrokes("up");
1108        cx.background_executor.run_until_parked();
1109        palette.read_with(cx, |palette, cx| {
1110            assert_eq!(palette.query(cx), "select line");
1111        });
1112
1113        // Press up again - should get "select all" (next matching "sel")
1114        cx.simulate_keystrokes("up");
1115        cx.background_executor.run_until_parked();
1116        palette.read_with(cx, |palette, cx| {
1117            assert_eq!(palette.query(cx), "select all");
1118        });
1119
1120        // Press up again - should stay at "select all" (no more matches for "sel")
1121        cx.simulate_keystrokes("up");
1122        cx.background_executor.run_until_parked();
1123        palette.read_with(cx, |palette, cx| {
1124            assert_eq!(palette.query(cx), "select all");
1125        });
1126
1127        // Press down - should go back to "select line"
1128        cx.simulate_keystrokes("down");
1129        cx.background_executor.run_until_parked();
1130        palette.read_with(cx, |palette, cx| {
1131            assert_eq!(palette.query(cx), "select line");
1132        });
1133
1134        // Press down again - should return to original prefix "sel"
1135        cx.simulate_keystrokes("down");
1136        cx.background_executor.run_until_parked();
1137        palette.read_with(cx, |palette, cx| {
1138            assert_eq!(palette.query(cx), "sel");
1139        });
1140    }
1141
1142    #[gpui::test]
1143    async fn test_history_prefix_search_no_matches(cx: &mut TestAppContext) {
1144        let app_state = init_test(cx);
1145        let project = Project::test(app_state.fs.clone(), [], cx).await;
1146        let (multi_workspace, cx) =
1147            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
1148        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
1149
1150        let palette =
1151            open_palette_with_history(&workspace, &["open file", "backspace", "select all"], cx);
1152
1153        // Type "xyz" as a prefix that doesn't match anything
1154        cx.simulate_input("xyz");
1155        cx.background_executor.run_until_parked();
1156
1157        // Press up - should stay at "xyz" (no matches)
1158        cx.simulate_keystrokes("up");
1159        cx.background_executor.run_until_parked();
1160        palette.read_with(cx, |palette, cx| {
1161            assert_eq!(palette.query(cx), "xyz");
1162        });
1163    }
1164
1165    #[gpui::test]
1166    async fn test_history_empty_prefix_searches_all(cx: &mut TestAppContext) {
1167        let app_state = init_test(cx);
1168        let project = Project::test(app_state.fs.clone(), [], cx).await;
1169        let (multi_workspace, cx) =
1170            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project.clone(), window, cx));
1171        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
1172
1173        let palette = open_palette_with_history(&workspace, &["alpha", "beta", "gamma"], cx);
1174
1175        // With empty query, press up - should get "gamma" (most recent)
1176        cx.simulate_keystrokes("up");
1177        cx.background_executor.run_until_parked();
1178        palette.read_with(cx, |palette, cx| {
1179            assert_eq!(palette.query(cx), "gamma");
1180        });
1181
1182        // Press up - should get "beta"
1183        cx.simulate_keystrokes("up");
1184        cx.background_executor.run_until_parked();
1185        palette.read_with(cx, |palette, cx| {
1186            assert_eq!(palette.query(cx), "beta");
1187        });
1188
1189        // Press up - should get "alpha"
1190        cx.simulate_keystrokes("up");
1191        cx.background_executor.run_until_parked();
1192        palette.read_with(cx, |palette, cx| {
1193            assert_eq!(palette.query(cx), "alpha");
1194        });
1195
1196        // Press down - should get "beta"
1197        cx.simulate_keystrokes("down");
1198        cx.background_executor.run_until_parked();
1199        palette.read_with(cx, |palette, cx| {
1200            assert_eq!(palette.query(cx), "beta");
1201        });
1202
1203        // Press down - should get "gamma"
1204        cx.simulate_keystrokes("down");
1205        cx.background_executor.run_until_parked();
1206        palette.read_with(cx, |palette, cx| {
1207            assert_eq!(palette.query(cx), "gamma");
1208        });
1209
1210        // Press down - should return to empty string (exit history mode)
1211        cx.simulate_keystrokes("down");
1212        cx.background_executor.run_until_parked();
1213        palette.read_with(cx, |palette, cx| {
1214            assert_eq!(palette.query(cx), "");
1215        });
1216    }
1217}