buffer_search.rs

   1mod registrar;
   2
   3use crate::{
   4    mode::{next_mode, SearchMode},
   5    search_bar::render_nav_button,
   6    ActivateRegexMode, ActivateTextMode, CycleMode, NextHistoryQuery, PreviousHistoryQuery,
   7    ReplaceAll, ReplaceNext, SearchOptions, SelectAllMatches, SelectNextMatch, SelectPrevMatch,
   8    ToggleCaseSensitive, ToggleReplace, ToggleWholeWord,
   9};
  10use any_vec::AnyVec;
  11use collections::HashMap;
  12use editor::{
  13    actions::{Tab, TabPrev},
  14    Editor, EditorElement, EditorStyle,
  15};
  16use futures::channel::oneshot;
  17use gpui::{
  18    actions, div, impl_actions, Action, AppContext, ClickEvent, EventEmitter, FocusableView,
  19    FontStyle, FontWeight, Hsla, InteractiveElement as _, IntoElement, KeyContext,
  20    ParentElement as _, Render, Styled, Subscription, Task, TextStyle, View, ViewContext,
  21    VisualContext as _, WhiteSpace, WindowContext,
  22};
  23use project::{
  24    search::SearchQuery,
  25    search_history::{SearchHistory, SearchHistoryCursor},
  26};
  27use serde::Deserialize;
  28use settings::Settings;
  29use std::sync::Arc;
  30use theme::ThemeSettings;
  31
  32use ui::{h_flex, prelude::*, IconButton, IconName, ToggleButton, Tooltip};
  33use util::ResultExt;
  34use workspace::{
  35    item::ItemHandle,
  36    searchable::{Direction, SearchEvent, SearchableItemHandle, WeakSearchableItemHandle},
  37    ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView, Workspace,
  38};
  39
  40pub use registrar::DivRegistrar;
  41use registrar::{ForDeployed, ForDismissed, SearchActionsRegistrar, WithResults};
  42
  43const MIN_INPUT_WIDTH_REMS: f32 = 15.;
  44const MAX_INPUT_WIDTH_REMS: f32 = 30.;
  45const MAX_BUFFER_SEARCH_HISTORY_SIZE: usize = 50;
  46
  47#[derive(PartialEq, Clone, Deserialize)]
  48pub struct Deploy {
  49    pub focus: bool,
  50}
  51
  52impl_actions!(buffer_search, [Deploy]);
  53
  54actions!(buffer_search, [Dismiss, FocusEditor]);
  55
  56pub enum Event {
  57    UpdateLocation,
  58}
  59
  60pub fn init(cx: &mut AppContext) {
  61    cx.observe_new_views(|workspace: &mut Workspace, _| BufferSearchBar::register(workspace))
  62        .detach();
  63}
  64
  65pub struct BufferSearchBar {
  66    query_editor: View<Editor>,
  67    query_editor_focused: bool,
  68    replacement_editor: View<Editor>,
  69    replacement_editor_focused: bool,
  70    active_searchable_item: Option<Box<dyn SearchableItemHandle>>,
  71    active_match_index: Option<usize>,
  72    active_searchable_item_subscription: Option<Subscription>,
  73    active_search: Option<Arc<SearchQuery>>,
  74    searchable_items_with_matches: HashMap<Box<dyn WeakSearchableItemHandle>, AnyVec<dyn Send>>,
  75    pending_search: Option<Task<()>>,
  76    search_options: SearchOptions,
  77    default_options: SearchOptions,
  78    query_contains_error: bool,
  79    dismissed: bool,
  80    search_history: SearchHistory,
  81    search_history_cursor: SearchHistoryCursor,
  82    current_mode: SearchMode,
  83    replace_enabled: bool,
  84}
  85
  86impl BufferSearchBar {
  87    fn render_text_input(
  88        &self,
  89        editor: &View<Editor>,
  90        color: Hsla,
  91        cx: &ViewContext<Self>,
  92    ) -> impl IntoElement {
  93        let settings = ThemeSettings::get_global(cx);
  94        let text_style = TextStyle {
  95            color: if editor.read(cx).read_only(cx) {
  96                cx.theme().colors().text_disabled
  97            } else {
  98                color
  99            },
 100            font_family: settings.ui_font.family.clone(),
 101            font_features: settings.ui_font.features,
 102            font_size: rems(0.875).into(),
 103            font_weight: FontWeight::NORMAL,
 104            font_style: FontStyle::Normal,
 105            line_height: relative(1.3),
 106            background_color: None,
 107            underline: None,
 108            strikethrough: None,
 109            white_space: WhiteSpace::Normal,
 110        };
 111
 112        EditorElement::new(
 113            &editor,
 114            EditorStyle {
 115                background: cx.theme().colors().editor_background,
 116                local_player: cx.theme().players().local(),
 117                text: text_style,
 118                ..Default::default()
 119            },
 120        )
 121    }
 122}
 123
 124impl EventEmitter<Event> for BufferSearchBar {}
 125impl EventEmitter<workspace::ToolbarItemEvent> for BufferSearchBar {}
 126impl Render for BufferSearchBar {
 127    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
 128        if self.dismissed {
 129            return div();
 130        }
 131
 132        let supported_options = self.supported_options();
 133
 134        if self.query_editor.update(cx, |query_editor, cx| {
 135            query_editor.placeholder_text(cx).is_none()
 136        }) {
 137            let query_focus_handle = self.query_editor.focus_handle(cx);
 138            let up_keystrokes = cx
 139                .bindings_for_action_in(&PreviousHistoryQuery {}, &query_focus_handle)
 140                .into_iter()
 141                .next()
 142                .map(|binding| {
 143                    binding
 144                        .keystrokes()
 145                        .iter()
 146                        .map(|k| k.to_string())
 147                        .collect::<Vec<_>>()
 148                });
 149            let down_keystrokes = cx
 150                .bindings_for_action_in(&NextHistoryQuery {}, &query_focus_handle)
 151                .into_iter()
 152                .next()
 153                .map(|binding| {
 154                    binding
 155                        .keystrokes()
 156                        .iter()
 157                        .map(|k| k.to_string())
 158                        .collect::<Vec<_>>()
 159                });
 160
 161            let placeholder_text =
 162                up_keystrokes
 163                    .zip(down_keystrokes)
 164                    .map(|(up_keystrokes, down_keystrokes)| {
 165                        Arc::from(format!(
 166                            "Search ({}/{} for previous/next query)",
 167                            up_keystrokes.join(" "),
 168                            down_keystrokes.join(" ")
 169                        ))
 170                    });
 171
 172            if let Some(placeholder_text) = placeholder_text {
 173                self.query_editor.update(cx, |editor, cx| {
 174                    editor.set_placeholder_text(placeholder_text, cx);
 175                });
 176            }
 177        }
 178
 179        self.replacement_editor.update(cx, |editor, cx| {
 180            editor.set_placeholder_text("Replace with...", cx);
 181        });
 182
 183        let mut match_color = Color::Default;
 184        let match_text = self
 185            .active_searchable_item
 186            .as_ref()
 187            .and_then(|searchable_item| {
 188                if self.query(cx).is_empty() {
 189                    return None;
 190                }
 191                let matches_count = self
 192                    .searchable_items_with_matches
 193                    .get(&searchable_item.downgrade())
 194                    .map(AnyVec::len)
 195                    .unwrap_or(0);
 196                if let Some(match_ix) = self.active_match_index {
 197                    Some(format!("{}/{}", match_ix + 1, matches_count))
 198                } else {
 199                    match_color = Color::Error; // No matches found
 200                    None
 201                }
 202            })
 203            .unwrap_or_else(|| "No matches".to_string());
 204        let match_count = Label::new(match_text).color(match_color);
 205        let should_show_replace_input = self.replace_enabled && supported_options.replacement;
 206        let in_replace = self.replacement_editor.focus_handle(cx).is_focused(cx);
 207
 208        let mut key_context = KeyContext::default();
 209        key_context.add("BufferSearchBar");
 210        if in_replace {
 211            key_context.add("in_replace");
 212        }
 213        let editor_border = if self.query_contains_error {
 214            Color::Error.color(cx)
 215        } else {
 216            cx.theme().colors().border
 217        };
 218
 219        let search_line = h_flex()
 220            .gap_2()
 221            .child(
 222                h_flex()
 223                    .flex_1()
 224                    .px_2()
 225                    .py_1()
 226                    .border_1()
 227                    .border_color(editor_border)
 228                    .min_w(rems(MIN_INPUT_WIDTH_REMS))
 229                    .max_w(rems(MAX_INPUT_WIDTH_REMS))
 230                    .rounded_lg()
 231                    .child(self.render_text_input(&self.query_editor, match_color.color(cx), cx))
 232                    .children(supported_options.case.then(|| {
 233                        self.render_search_option_button(
 234                            SearchOptions::CASE_SENSITIVE,
 235                            cx.listener(|this, _, cx| {
 236                                this.toggle_case_sensitive(&ToggleCaseSensitive, cx)
 237                            }),
 238                        )
 239                    }))
 240                    .children(supported_options.word.then(|| {
 241                        self.render_search_option_button(
 242                            SearchOptions::WHOLE_WORD,
 243                            cx.listener(|this, _, cx| this.toggle_whole_word(&ToggleWholeWord, cx)),
 244                        )
 245                    })),
 246            )
 247            .child(
 248                h_flex()
 249                    .gap_2()
 250                    .flex_none()
 251                    .child(
 252                        h_flex()
 253                            .child(
 254                                ToggleButton::new("search-mode-text", SearchMode::Text.label())
 255                                    .style(ButtonStyle::Filled)
 256                                    .size(ButtonSize::Large)
 257                                    .selected(self.current_mode == SearchMode::Text)
 258                                    .on_click(cx.listener(move |_, _event, cx| {
 259                                        cx.dispatch_action(SearchMode::Text.action())
 260                                    }))
 261                                    .tooltip(|cx| {
 262                                        Tooltip::for_action(
 263                                            SearchMode::Text.tooltip(),
 264                                            &*SearchMode::Text.action(),
 265                                            cx,
 266                                        )
 267                                    })
 268                                    .first(),
 269                            )
 270                            .child(
 271                                ToggleButton::new("search-mode-regex", SearchMode::Regex.label())
 272                                    .style(ButtonStyle::Filled)
 273                                    .size(ButtonSize::Large)
 274                                    .selected(self.current_mode == SearchMode::Regex)
 275                                    .on_click(cx.listener(move |_, _event, cx| {
 276                                        cx.dispatch_action(SearchMode::Regex.action())
 277                                    }))
 278                                    .tooltip(|cx| {
 279                                        Tooltip::for_action(
 280                                            SearchMode::Regex.tooltip(),
 281                                            &*SearchMode::Regex.action(),
 282                                            cx,
 283                                        )
 284                                    })
 285                                    .last(),
 286                            ),
 287                    )
 288                    .when(supported_options.replacement, |this| {
 289                        this.child(
 290                            IconButton::new(
 291                                "buffer-search-bar-toggle-replace-button",
 292                                IconName::Replace,
 293                            )
 294                            .style(ButtonStyle::Subtle)
 295                            .when(self.replace_enabled, |button| {
 296                                button.style(ButtonStyle::Filled)
 297                            })
 298                            .on_click(cx.listener(|this, _: &ClickEvent, cx| {
 299                                this.toggle_replace(&ToggleReplace, cx);
 300                            }))
 301                            .tooltip(|cx| {
 302                                Tooltip::for_action("Toggle replace", &ToggleReplace, cx)
 303                            }),
 304                        )
 305                    }),
 306            )
 307            .child(
 308                h_flex()
 309                    .gap_2()
 310                    .flex_none()
 311                    .child(
 312                        IconButton::new("select-all", ui::IconName::SelectAll)
 313                            .on_click(|_, cx| cx.dispatch_action(SelectAllMatches.boxed_clone()))
 314                            .tooltip(|cx| {
 315                                Tooltip::for_action("Select all matches", &SelectAllMatches, cx)
 316                            }),
 317                    )
 318                    .child(div().min_w(rems(6.)).child(match_count))
 319                    .child(render_nav_button(
 320                        ui::IconName::ChevronLeft,
 321                        self.active_match_index.is_some(),
 322                        "Select previous match",
 323                        &SelectPrevMatch,
 324                    ))
 325                    .child(render_nav_button(
 326                        ui::IconName::ChevronRight,
 327                        self.active_match_index.is_some(),
 328                        "Select next match",
 329                        &SelectNextMatch,
 330                    )),
 331            );
 332
 333        let replace_line = should_show_replace_input.then(|| {
 334            h_flex()
 335                .gap_2()
 336                .flex_1()
 337                .child(
 338                    h_flex()
 339                        .flex_1()
 340                        // We're giving this a fixed height to match the height of the search input,
 341                        // which has an icon inside that is increasing its height.
 342                        .h_8()
 343                        .px_2()
 344                        .py_1()
 345                        .border_1()
 346                        .border_color(cx.theme().colors().border)
 347                        .rounded_lg()
 348                        .min_w(rems(MIN_INPUT_WIDTH_REMS))
 349                        .max_w(rems(MAX_INPUT_WIDTH_REMS))
 350                        .child(self.render_text_input(
 351                            &self.replacement_editor,
 352                            cx.theme().colors().text,
 353                            cx,
 354                        )),
 355                )
 356                .child(
 357                    h_flex()
 358                        .flex_none()
 359                        .child(
 360                            IconButton::new("search-replace-next", ui::IconName::ReplaceNext)
 361                                .tooltip(move |cx| {
 362                                    Tooltip::for_action("Replace next", &ReplaceNext, cx)
 363                                })
 364                                .on_click(
 365                                    cx.listener(|this, _, cx| this.replace_next(&ReplaceNext, cx)),
 366                                ),
 367                        )
 368                        .child(
 369                            IconButton::new("search-replace-all", ui::IconName::ReplaceAll)
 370                                .tooltip(move |cx| {
 371                                    Tooltip::for_action("Replace all", &ReplaceAll, cx)
 372                                })
 373                                .on_click(
 374                                    cx.listener(|this, _, cx| this.replace_all(&ReplaceAll, cx)),
 375                                ),
 376                        ),
 377                )
 378        });
 379
 380        v_flex()
 381            .key_context(key_context)
 382            .capture_action(cx.listener(Self::tab))
 383            .capture_action(cx.listener(Self::tab_prev))
 384            .on_action(cx.listener(Self::previous_history_query))
 385            .on_action(cx.listener(Self::next_history_query))
 386            .on_action(cx.listener(Self::dismiss))
 387            .on_action(cx.listener(Self::select_next_match))
 388            .on_action(cx.listener(Self::select_prev_match))
 389            .on_action(cx.listener(|this, _: &ActivateRegexMode, cx| {
 390                this.activate_search_mode(SearchMode::Regex, cx);
 391            }))
 392            .on_action(cx.listener(|this, _: &ActivateTextMode, cx| {
 393                this.activate_search_mode(SearchMode::Text, cx);
 394            }))
 395            .when(self.supported_options().replacement, |this| {
 396                this.on_action(cx.listener(Self::toggle_replace))
 397                    .when(in_replace, |this| {
 398                        this.on_action(cx.listener(Self::replace_next))
 399                            .on_action(cx.listener(Self::replace_all))
 400                    })
 401            })
 402            .when(self.supported_options().case, |this| {
 403                this.on_action(cx.listener(Self::toggle_case_sensitive))
 404            })
 405            .when(self.supported_options().word, |this| {
 406                this.on_action(cx.listener(Self::toggle_whole_word))
 407            })
 408            .gap_2()
 409            .child(
 410                h_flex().child(search_line.w_full()).child(
 411                    IconButton::new(SharedString::from("Close"), IconName::Close)
 412                        .tooltip(move |cx| Tooltip::for_action("Close search bar", &Dismiss, cx))
 413                        .on_click(
 414                            cx.listener(|this, _: &ClickEvent, cx| this.dismiss(&Dismiss, cx)),
 415                        ),
 416                ),
 417            )
 418            .children(replace_line)
 419    }
 420}
 421
 422impl FocusableView for BufferSearchBar {
 423    fn focus_handle(&self, cx: &AppContext) -> gpui::FocusHandle {
 424        self.query_editor.focus_handle(cx)
 425    }
 426}
 427
 428impl ToolbarItemView for BufferSearchBar {
 429    fn set_active_pane_item(
 430        &mut self,
 431        item: Option<&dyn ItemHandle>,
 432        cx: &mut ViewContext<Self>,
 433    ) -> ToolbarItemLocation {
 434        cx.notify();
 435        self.active_searchable_item_subscription.take();
 436        self.active_searchable_item.take();
 437
 438        self.pending_search.take();
 439
 440        if let Some(searchable_item_handle) =
 441            item.and_then(|item| item.to_searchable_item_handle(cx))
 442        {
 443            let this = cx.view().downgrade();
 444
 445            self.active_searchable_item_subscription =
 446                Some(searchable_item_handle.subscribe_to_search_events(
 447                    cx,
 448                    Box::new(move |search_event, cx| {
 449                        if let Some(this) = this.upgrade() {
 450                            this.update(cx, |this, cx| {
 451                                this.on_active_searchable_item_event(search_event, cx)
 452                            });
 453                        }
 454                    }),
 455                ));
 456
 457            self.active_searchable_item = Some(searchable_item_handle);
 458            let _ = self.update_matches(cx);
 459            if !self.dismissed {
 460                return ToolbarItemLocation::Secondary;
 461            }
 462        }
 463        ToolbarItemLocation::Hidden
 464    }
 465
 466    fn row_count(&self, _: &WindowContext<'_>) -> usize {
 467        1
 468    }
 469}
 470
 471impl BufferSearchBar {
 472    pub fn register(registrar: &mut impl SearchActionsRegistrar) {
 473        registrar.register_handler(ForDeployed(|this, action: &ToggleCaseSensitive, cx| {
 474            if this.supported_options().case {
 475                this.toggle_case_sensitive(action, cx);
 476            }
 477        }));
 478        registrar.register_handler(ForDeployed(|this, action: &ToggleWholeWord, cx| {
 479            if this.supported_options().word {
 480                this.toggle_whole_word(action, cx);
 481            }
 482        }));
 483        registrar.register_handler(ForDeployed(|this, action: &ToggleReplace, cx| {
 484            if this.supported_options().replacement {
 485                this.toggle_replace(action, cx);
 486            }
 487        }));
 488        registrar.register_handler(ForDeployed(|this, _: &ActivateRegexMode, cx| {
 489            if this.supported_options().regex {
 490                this.activate_search_mode(SearchMode::Regex, cx);
 491            }
 492        }));
 493        registrar.register_handler(ForDeployed(|this, _: &ActivateTextMode, cx| {
 494            this.activate_search_mode(SearchMode::Text, cx);
 495        }));
 496        registrar.register_handler(ForDeployed(|this, action: &CycleMode, cx| {
 497            if this.supported_options().regex {
 498                // If regex is not supported then search has just one mode (text) - in that case there's no point in supporting
 499                // cycling.
 500                this.cycle_mode(action, cx)
 501            }
 502        }));
 503        registrar.register_handler(WithResults(|this, action: &SelectNextMatch, cx| {
 504            this.select_next_match(action, cx);
 505        }));
 506        registrar.register_handler(WithResults(|this, action: &SelectPrevMatch, cx| {
 507            this.select_prev_match(action, cx);
 508        }));
 509        registrar.register_handler(WithResults(|this, action: &SelectAllMatches, cx| {
 510            this.select_all_matches(action, cx);
 511        }));
 512        registrar.register_handler(ForDeployed(|this, _: &editor::actions::Cancel, cx| {
 513            this.dismiss(&Dismiss, cx);
 514        }));
 515
 516        // register deploy buffer search for both search bar states, since we want to focus into the search bar
 517        // when the deploy action is triggered in the buffer.
 518        registrar.register_handler(ForDeployed(|this, deploy, cx| {
 519            this.deploy(deploy, cx);
 520        }));
 521        registrar.register_handler(ForDismissed(|this, deploy, cx| {
 522            this.deploy(deploy, cx);
 523        }))
 524    }
 525
 526    pub fn new(cx: &mut ViewContext<Self>) -> Self {
 527        let query_editor = cx.new_view(|cx| Editor::single_line(cx));
 528        cx.subscribe(&query_editor, Self::on_query_editor_event)
 529            .detach();
 530        let replacement_editor = cx.new_view(|cx| Editor::single_line(cx));
 531        cx.subscribe(&replacement_editor, Self::on_replacement_editor_event)
 532            .detach();
 533
 534        Self {
 535            query_editor,
 536            query_editor_focused: false,
 537            replacement_editor,
 538            replacement_editor_focused: false,
 539            active_searchable_item: None,
 540            active_searchable_item_subscription: None,
 541            active_match_index: None,
 542            searchable_items_with_matches: Default::default(),
 543            default_options: SearchOptions::NONE,
 544            search_options: SearchOptions::NONE,
 545            pending_search: None,
 546            query_contains_error: false,
 547            dismissed: true,
 548            search_history: SearchHistory::new(
 549                Some(MAX_BUFFER_SEARCH_HISTORY_SIZE),
 550                project::search_history::QueryInsertionBehavior::ReplacePreviousIfContains,
 551            ),
 552            search_history_cursor: Default::default(),
 553            current_mode: SearchMode::default(),
 554            active_search: None,
 555            replace_enabled: false,
 556        }
 557    }
 558
 559    pub fn is_dismissed(&self) -> bool {
 560        self.dismissed
 561    }
 562
 563    pub fn dismiss(&mut self, _: &Dismiss, cx: &mut ViewContext<Self>) {
 564        self.dismissed = true;
 565        for searchable_item in self.searchable_items_with_matches.keys() {
 566            if let Some(searchable_item) =
 567                WeakSearchableItemHandle::upgrade(searchable_item.as_ref(), cx)
 568            {
 569                searchable_item.clear_matches(cx);
 570            }
 571        }
 572        if let Some(active_editor) = self.active_searchable_item.as_ref() {
 573            let handle = active_editor.focus_handle(cx);
 574            cx.focus(&handle);
 575        }
 576        cx.emit(Event::UpdateLocation);
 577        cx.emit(ToolbarItemEvent::ChangeLocation(
 578            ToolbarItemLocation::Hidden,
 579        ));
 580        cx.notify();
 581    }
 582
 583    pub fn deploy(&mut self, deploy: &Deploy, cx: &mut ViewContext<Self>) -> bool {
 584        if self.show(cx) {
 585            self.search_suggested(cx);
 586            if deploy.focus {
 587                self.select_query(cx);
 588                let handle = self.query_editor.focus_handle(cx);
 589                cx.focus(&handle);
 590            }
 591            return true;
 592        }
 593
 594        false
 595    }
 596
 597    pub fn toggle(&mut self, action: &Deploy, cx: &mut ViewContext<Self>) {
 598        if self.is_dismissed() {
 599            self.deploy(action, cx);
 600        } else {
 601            self.dismiss(&Dismiss, cx);
 602        }
 603    }
 604
 605    pub fn show(&mut self, cx: &mut ViewContext<Self>) -> bool {
 606        if self.active_searchable_item.is_none() {
 607            return false;
 608        }
 609        self.dismissed = false;
 610        cx.notify();
 611        cx.emit(Event::UpdateLocation);
 612        cx.emit(ToolbarItemEvent::ChangeLocation(
 613            ToolbarItemLocation::Secondary,
 614        ));
 615        true
 616    }
 617
 618    fn supported_options(&self) -> workspace::searchable::SearchOptions {
 619        self.active_searchable_item
 620            .as_deref()
 621            .map(SearchableItemHandle::supported_options)
 622            .unwrap_or_default()
 623    }
 624    pub fn search_suggested(&mut self, cx: &mut ViewContext<Self>) {
 625        let search = self
 626            .query_suggestion(cx)
 627            .map(|suggestion| self.search(&suggestion, Some(self.default_options), cx));
 628
 629        if let Some(search) = search {
 630            cx.spawn(|this, mut cx| async move {
 631                search.await?;
 632                this.update(&mut cx, |this, cx| this.activate_current_match(cx))
 633            })
 634            .detach_and_log_err(cx);
 635        }
 636    }
 637
 638    pub fn activate_current_match(&mut self, cx: &mut ViewContext<Self>) {
 639        if let Some(match_ix) = self.active_match_index {
 640            if let Some(active_searchable_item) = self.active_searchable_item.as_ref() {
 641                if let Some(matches) = self
 642                    .searchable_items_with_matches
 643                    .get(&active_searchable_item.downgrade())
 644                {
 645                    active_searchable_item.activate_match(match_ix, matches, cx)
 646                }
 647            }
 648        }
 649    }
 650
 651    pub fn select_query(&mut self, cx: &mut ViewContext<Self>) {
 652        self.query_editor.update(cx, |query_editor, cx| {
 653            query_editor.select_all(&Default::default(), cx);
 654        });
 655    }
 656
 657    pub fn query(&self, cx: &WindowContext) -> String {
 658        self.query_editor.read(cx).text(cx)
 659    }
 660    pub fn replacement(&self, cx: &WindowContext) -> String {
 661        self.replacement_editor.read(cx).text(cx)
 662    }
 663    pub fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> Option<String> {
 664        self.active_searchable_item
 665            .as_ref()
 666            .map(|searchable_item| searchable_item.query_suggestion(cx))
 667            .filter(|suggestion| !suggestion.is_empty())
 668    }
 669
 670    pub fn set_replacement(&mut self, replacement: Option<&str>, cx: &mut ViewContext<Self>) {
 671        if replacement.is_none() {
 672            self.replace_enabled = false;
 673            return;
 674        }
 675        self.replace_enabled = true;
 676        self.replacement_editor
 677            .update(cx, |replacement_editor, cx| {
 678                replacement_editor
 679                    .buffer()
 680                    .update(cx, |replacement_buffer, cx| {
 681                        let len = replacement_buffer.len(cx);
 682                        replacement_buffer.edit([(0..len, replacement.unwrap())], None, cx);
 683                    });
 684            });
 685    }
 686
 687    pub fn search(
 688        &mut self,
 689        query: &str,
 690        options: Option<SearchOptions>,
 691        cx: &mut ViewContext<Self>,
 692    ) -> oneshot::Receiver<()> {
 693        let options = options.unwrap_or(self.default_options);
 694        if query != self.query(cx) || self.search_options != options {
 695            self.query_editor.update(cx, |query_editor, cx| {
 696                query_editor.buffer().update(cx, |query_buffer, cx| {
 697                    let len = query_buffer.len(cx);
 698                    query_buffer.edit([(0..len, query)], None, cx);
 699                });
 700            });
 701            self.search_options = options;
 702            self.clear_matches(cx);
 703            cx.notify();
 704        }
 705        self.update_matches(cx)
 706    }
 707
 708    fn render_search_option_button(
 709        &self,
 710        option: SearchOptions,
 711        action: impl Fn(&ClickEvent, &mut WindowContext) + 'static,
 712    ) -> impl IntoElement {
 713        let is_active = self.search_options.contains(option);
 714        option.as_button(is_active, action)
 715    }
 716    pub fn activate_search_mode(&mut self, mode: SearchMode, cx: &mut ViewContext<Self>) {
 717        if mode == self.current_mode {
 718            return;
 719        }
 720        self.current_mode = mode;
 721        let _ = self.update_matches(cx);
 722        cx.notify();
 723    }
 724
 725    pub fn focus_editor(&mut self, _: &FocusEditor, cx: &mut ViewContext<Self>) {
 726        if let Some(active_editor) = self.active_searchable_item.as_ref() {
 727            let handle = active_editor.focus_handle(cx);
 728            cx.focus(&handle);
 729        }
 730    }
 731
 732    fn toggle_search_option(&mut self, search_option: SearchOptions, cx: &mut ViewContext<Self>) {
 733        self.search_options.toggle(search_option);
 734        self.default_options = self.search_options;
 735        let _ = self.update_matches(cx);
 736        cx.notify();
 737    }
 738
 739    pub fn set_search_options(
 740        &mut self,
 741        search_options: SearchOptions,
 742        cx: &mut ViewContext<Self>,
 743    ) {
 744        self.search_options = search_options;
 745        cx.notify();
 746    }
 747
 748    fn select_next_match(&mut self, _: &SelectNextMatch, cx: &mut ViewContext<Self>) {
 749        self.select_match(Direction::Next, 1, cx);
 750    }
 751
 752    fn select_prev_match(&mut self, _: &SelectPrevMatch, cx: &mut ViewContext<Self>) {
 753        self.select_match(Direction::Prev, 1, cx);
 754    }
 755
 756    fn select_all_matches(&mut self, _: &SelectAllMatches, cx: &mut ViewContext<Self>) {
 757        if !self.dismissed && self.active_match_index.is_some() {
 758            if let Some(searchable_item) = self.active_searchable_item.as_ref() {
 759                if let Some(matches) = self
 760                    .searchable_items_with_matches
 761                    .get(&searchable_item.downgrade())
 762                {
 763                    searchable_item.select_matches(matches, cx);
 764                    self.focus_editor(&FocusEditor, cx);
 765                }
 766            }
 767        }
 768    }
 769
 770    pub fn select_match(&mut self, direction: Direction, count: usize, cx: &mut ViewContext<Self>) {
 771        if let Some(index) = self.active_match_index {
 772            if let Some(searchable_item) = self.active_searchable_item.as_ref() {
 773                if let Some(matches) = self
 774                    .searchable_items_with_matches
 775                    .get(&searchable_item.downgrade())
 776                {
 777                    let new_match_index = searchable_item
 778                        .match_index_for_direction(matches, index, direction, count, cx);
 779
 780                    searchable_item.update_matches(matches, cx);
 781                    searchable_item.activate_match(new_match_index, matches, cx);
 782                }
 783            }
 784        }
 785    }
 786
 787    pub fn select_last_match(&mut self, cx: &mut ViewContext<Self>) {
 788        if let Some(searchable_item) = self.active_searchable_item.as_ref() {
 789            if let Some(matches) = self
 790                .searchable_items_with_matches
 791                .get(&searchable_item.downgrade())
 792            {
 793                if matches.len() == 0 {
 794                    return;
 795                }
 796                let new_match_index = matches.len() - 1;
 797                searchable_item.update_matches(matches, cx);
 798                searchable_item.activate_match(new_match_index, matches, cx);
 799            }
 800        }
 801    }
 802
 803    fn on_query_editor_event(
 804        &mut self,
 805        _: View<Editor>,
 806        event: &editor::EditorEvent,
 807        cx: &mut ViewContext<Self>,
 808    ) {
 809        match event {
 810            editor::EditorEvent::Focused => self.query_editor_focused = true,
 811            editor::EditorEvent::Blurred => self.query_editor_focused = false,
 812            editor::EditorEvent::Edited => {
 813                self.clear_matches(cx);
 814                let search = self.update_matches(cx);
 815                cx.spawn(|this, mut cx| async move {
 816                    search.await?;
 817                    this.update(&mut cx, |this, cx| this.activate_current_match(cx))
 818                })
 819                .detach_and_log_err(cx);
 820            }
 821            _ => {}
 822        }
 823    }
 824
 825    fn on_replacement_editor_event(
 826        &mut self,
 827        _: View<Editor>,
 828        event: &editor::EditorEvent,
 829        _: &mut ViewContext<Self>,
 830    ) {
 831        match event {
 832            editor::EditorEvent::Focused => self.replacement_editor_focused = true,
 833            editor::EditorEvent::Blurred => self.replacement_editor_focused = false,
 834            _ => {}
 835        }
 836    }
 837
 838    fn on_active_searchable_item_event(&mut self, event: &SearchEvent, cx: &mut ViewContext<Self>) {
 839        match event {
 840            SearchEvent::MatchesInvalidated => {
 841                let _ = self.update_matches(cx);
 842            }
 843            SearchEvent::ActiveMatchChanged => self.update_match_index(cx),
 844        }
 845    }
 846
 847    fn toggle_case_sensitive(&mut self, _: &ToggleCaseSensitive, cx: &mut ViewContext<Self>) {
 848        self.toggle_search_option(SearchOptions::CASE_SENSITIVE, cx)
 849    }
 850    fn toggle_whole_word(&mut self, _: &ToggleWholeWord, cx: &mut ViewContext<Self>) {
 851        self.toggle_search_option(SearchOptions::WHOLE_WORD, cx)
 852    }
 853
 854    fn clear_active_searchable_item_matches(&mut self, cx: &mut WindowContext) {
 855        if let Some(active_searchable_item) = self.active_searchable_item.as_ref() {
 856            self.active_match_index = None;
 857            self.searchable_items_with_matches
 858                .remove(&active_searchable_item.downgrade());
 859            active_searchable_item.clear_matches(cx);
 860        }
 861    }
 862
 863    fn clear_matches(&mut self, cx: &mut ViewContext<Self>) {
 864        let mut active_item_matches = None;
 865        for (searchable_item, matches) in self.searchable_items_with_matches.drain() {
 866            if let Some(searchable_item) =
 867                WeakSearchableItemHandle::upgrade(searchable_item.as_ref(), cx)
 868            {
 869                if Some(&searchable_item) == self.active_searchable_item.as_ref() {
 870                    active_item_matches = Some((searchable_item.downgrade(), matches));
 871                } else {
 872                    searchable_item.clear_matches(cx);
 873                }
 874            }
 875        }
 876
 877        self.searchable_items_with_matches
 878            .extend(active_item_matches);
 879    }
 880
 881    fn update_matches(&mut self, cx: &mut ViewContext<Self>) -> oneshot::Receiver<()> {
 882        let (done_tx, done_rx) = oneshot::channel();
 883        let query = self.query(cx);
 884        self.pending_search.take();
 885
 886        if let Some(active_searchable_item) = self.active_searchable_item.as_ref() {
 887            self.query_contains_error = false;
 888            if query.is_empty() {
 889                self.clear_active_searchable_item_matches(cx);
 890                let _ = done_tx.send(());
 891                cx.notify();
 892            } else {
 893                let query: Arc<_> = if self.current_mode == SearchMode::Regex {
 894                    match SearchQuery::regex(
 895                        query,
 896                        self.search_options.contains(SearchOptions::WHOLE_WORD),
 897                        self.search_options.contains(SearchOptions::CASE_SENSITIVE),
 898                        false,
 899                        Vec::new(),
 900                        Vec::new(),
 901                    ) {
 902                        Ok(query) => query.with_replacement(self.replacement(cx)),
 903                        Err(_) => {
 904                            self.query_contains_error = true;
 905                            self.clear_active_searchable_item_matches(cx);
 906                            cx.notify();
 907                            return done_rx;
 908                        }
 909                    }
 910                } else {
 911                    match SearchQuery::text(
 912                        query,
 913                        self.search_options.contains(SearchOptions::WHOLE_WORD),
 914                        self.search_options.contains(SearchOptions::CASE_SENSITIVE),
 915                        false,
 916                        Vec::new(),
 917                        Vec::new(),
 918                    ) {
 919                        Ok(query) => query.with_replacement(self.replacement(cx)),
 920                        Err(_) => {
 921                            self.query_contains_error = true;
 922                            self.clear_active_searchable_item_matches(cx);
 923                            cx.notify();
 924                            return done_rx;
 925                        }
 926                    }
 927                }
 928                .into();
 929                self.active_search = Some(query.clone());
 930                let query_text = query.as_str().to_string();
 931
 932                let matches = active_searchable_item.find_matches(query, cx);
 933
 934                let active_searchable_item = active_searchable_item.downgrade();
 935                self.pending_search = Some(cx.spawn(|this, mut cx| async move {
 936                    let matches = matches.await;
 937
 938                    this.update(&mut cx, |this, cx| {
 939                        if let Some(active_searchable_item) =
 940                            WeakSearchableItemHandle::upgrade(active_searchable_item.as_ref(), cx)
 941                        {
 942                            this.searchable_items_with_matches
 943                                .insert(active_searchable_item.downgrade(), matches);
 944
 945                            this.update_match_index(cx);
 946                            this.search_history
 947                                .add(&mut this.search_history_cursor, query_text);
 948                            if !this.dismissed {
 949                                let matches = this
 950                                    .searchable_items_with_matches
 951                                    .get(&active_searchable_item.downgrade())
 952                                    .unwrap();
 953                                active_searchable_item.update_matches(matches, cx);
 954                                let _ = done_tx.send(());
 955                            }
 956                            cx.notify();
 957                        }
 958                    })
 959                    .log_err();
 960                }));
 961            }
 962        }
 963        done_rx
 964    }
 965
 966    pub fn update_match_index(&mut self, cx: &mut ViewContext<Self>) {
 967        let new_index = self
 968            .active_searchable_item
 969            .as_ref()
 970            .and_then(|searchable_item| {
 971                let matches = self
 972                    .searchable_items_with_matches
 973                    .get(&searchable_item.downgrade())?;
 974                searchable_item.active_match_index(matches, cx)
 975            });
 976        if new_index != self.active_match_index {
 977            self.active_match_index = new_index;
 978            cx.notify();
 979        }
 980    }
 981
 982    fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
 983        // Search -> Replace -> Editor
 984        let focus_handle = if self.replace_enabled && self.query_editor_focused {
 985            self.replacement_editor.focus_handle(cx)
 986        } else if let Some(item) = self.active_searchable_item.as_ref() {
 987            item.focus_handle(cx)
 988        } else {
 989            return;
 990        };
 991        cx.focus(&focus_handle);
 992        cx.stop_propagation();
 993    }
 994
 995    fn tab_prev(&mut self, _: &TabPrev, cx: &mut ViewContext<Self>) {
 996        // Search -> Replace -> Search
 997        let focus_handle = if self.replace_enabled && self.query_editor_focused {
 998            self.replacement_editor.focus_handle(cx)
 999        } else if self.replacement_editor_focused {
1000            self.query_editor.focus_handle(cx)
1001        } else {
1002            return;
1003        };
1004        cx.focus(&focus_handle);
1005        cx.stop_propagation();
1006    }
1007
1008    fn next_history_query(&mut self, _: &NextHistoryQuery, cx: &mut ViewContext<Self>) {
1009        if let Some(new_query) = self
1010            .search_history
1011            .next(&mut self.search_history_cursor)
1012            .map(str::to_string)
1013        {
1014            let _ = self.search(&new_query, Some(self.search_options), cx);
1015        } else {
1016            self.search_history_cursor.reset();
1017            let _ = self.search("", Some(self.search_options), cx);
1018        }
1019    }
1020
1021    fn previous_history_query(&mut self, _: &PreviousHistoryQuery, cx: &mut ViewContext<Self>) {
1022        if self.query(cx).is_empty() {
1023            if let Some(new_query) = self
1024                .search_history
1025                .current(&mut self.search_history_cursor)
1026                .map(str::to_string)
1027            {
1028                let _ = self.search(&new_query, Some(self.search_options), cx);
1029                return;
1030            }
1031        }
1032
1033        if let Some(new_query) = self
1034            .search_history
1035            .previous(&mut self.search_history_cursor)
1036            .map(str::to_string)
1037        {
1038            let _ = self.search(&new_query, Some(self.search_options), cx);
1039        }
1040    }
1041    fn cycle_mode(&mut self, _: &CycleMode, cx: &mut ViewContext<Self>) {
1042        self.activate_search_mode(next_mode(&self.current_mode), cx);
1043    }
1044    fn toggle_replace(&mut self, _: &ToggleReplace, cx: &mut ViewContext<Self>) {
1045        if let Some(_) = &self.active_searchable_item {
1046            self.replace_enabled = !self.replace_enabled;
1047            let handle = if self.replace_enabled {
1048                self.replacement_editor.focus_handle(cx)
1049            } else {
1050                self.query_editor.focus_handle(cx)
1051            };
1052            cx.focus(&handle);
1053            cx.notify();
1054        }
1055    }
1056    fn replace_next(&mut self, _: &ReplaceNext, cx: &mut ViewContext<Self>) {
1057        let mut should_propagate = true;
1058        if !self.dismissed && self.active_search.is_some() {
1059            if let Some(searchable_item) = self.active_searchable_item.as_ref() {
1060                if let Some(query) = self.active_search.as_ref() {
1061                    if let Some(matches) = self
1062                        .searchable_items_with_matches
1063                        .get(&searchable_item.downgrade())
1064                    {
1065                        if let Some(active_index) = self.active_match_index {
1066                            let query = query
1067                                .as_ref()
1068                                .clone()
1069                                .with_replacement(self.replacement(cx));
1070                            searchable_item.replace(matches.at(active_index), &query, cx);
1071                            self.select_next_match(&SelectNextMatch, cx);
1072                        }
1073                        should_propagate = false;
1074                        self.focus_editor(&FocusEditor, cx);
1075                    }
1076                }
1077            }
1078        }
1079        if !should_propagate {
1080            cx.stop_propagation();
1081        }
1082    }
1083    pub fn replace_all(&mut self, _: &ReplaceAll, cx: &mut ViewContext<Self>) {
1084        if !self.dismissed && self.active_search.is_some() {
1085            if let Some(searchable_item) = self.active_searchable_item.as_ref() {
1086                if let Some(query) = self.active_search.as_ref() {
1087                    if let Some(matches) = self
1088                        .searchable_items_with_matches
1089                        .get(&searchable_item.downgrade())
1090                    {
1091                        let query = query
1092                            .as_ref()
1093                            .clone()
1094                            .with_replacement(self.replacement(cx));
1095                        for m in matches {
1096                            searchable_item.replace(m, &query, cx);
1097                        }
1098                    }
1099                }
1100            }
1101        }
1102    }
1103
1104    pub fn match_exists(&mut self, cx: &mut ViewContext<Self>) -> bool {
1105        self.update_match_index(cx);
1106        self.active_match_index.is_some()
1107    }
1108}
1109
1110#[cfg(test)]
1111mod tests {
1112    use std::ops::Range;
1113
1114    use super::*;
1115    use editor::{DisplayPoint, Editor};
1116    use gpui::{Context, Hsla, TestAppContext, VisualTestContext};
1117    use language::{Buffer, BufferId};
1118    use smol::stream::StreamExt as _;
1119    use unindent::Unindent as _;
1120
1121    fn init_globals(cx: &mut TestAppContext) {
1122        cx.update(|cx| {
1123            let store = settings::SettingsStore::test(cx);
1124            cx.set_global(store);
1125            editor::init(cx);
1126
1127            language::init(cx);
1128            theme::init(theme::LoadThemes::JustBase, cx);
1129        });
1130    }
1131
1132    fn init_test(
1133        cx: &mut TestAppContext,
1134    ) -> (View<Editor>, View<BufferSearchBar>, &mut VisualTestContext) {
1135        init_globals(cx);
1136        let buffer = cx.new_model(|cx| {
1137            Buffer::new(
1138                0,
1139                BufferId::new(cx.entity_id().as_u64()).unwrap(),
1140                r#"
1141                A regular expression (shortened as regex or regexp;[1] also referred to as
1142                rational expression[2][3]) is a sequence of characters that specifies a search
1143                pattern in text. Usually such patterns are used by string-searching algorithms
1144                for "find" or "find and replace" operations on strings, or for input validation.
1145                "#
1146                .unindent(),
1147            )
1148        });
1149        let cx = cx.add_empty_window();
1150        let editor = cx.new_view(|cx| Editor::for_buffer(buffer.clone(), None, cx));
1151
1152        let search_bar = cx.new_view(|cx| {
1153            let mut search_bar = BufferSearchBar::new(cx);
1154            search_bar.set_active_pane_item(Some(&editor), cx);
1155            search_bar.show(cx);
1156            search_bar
1157        });
1158
1159        (editor, search_bar, cx)
1160    }
1161
1162    #[gpui::test]
1163    async fn test_search_simple(cx: &mut TestAppContext) {
1164        let (editor, search_bar, cx) = init_test(cx);
1165        let display_points_of = |background_highlights: Vec<(Range<DisplayPoint>, Hsla)>| {
1166            background_highlights
1167                .into_iter()
1168                .map(|(range, _)| range)
1169                .collect::<Vec<_>>()
1170        };
1171        // Search for a string that appears with different casing.
1172        // By default, search is case-insensitive.
1173        search_bar
1174            .update(cx, |search_bar, cx| search_bar.search("us", None, cx))
1175            .await
1176            .unwrap();
1177        editor.update(cx, |editor, cx| {
1178            assert_eq!(
1179                display_points_of(editor.all_text_background_highlights(cx)),
1180                &[
1181                    DisplayPoint::new(2, 17)..DisplayPoint::new(2, 19),
1182                    DisplayPoint::new(2, 43)..DisplayPoint::new(2, 45),
1183                ]
1184            );
1185        });
1186
1187        // Switch to a case sensitive search.
1188        search_bar.update(cx, |search_bar, cx| {
1189            search_bar.toggle_search_option(SearchOptions::CASE_SENSITIVE, cx);
1190        });
1191        let mut editor_notifications = cx.notifications(&editor);
1192        editor_notifications.next().await;
1193        editor.update(cx, |editor, cx| {
1194            assert_eq!(
1195                display_points_of(editor.all_text_background_highlights(cx)),
1196                &[DisplayPoint::new(2, 43)..DisplayPoint::new(2, 45),]
1197            );
1198        });
1199
1200        // Search for a string that appears both as a whole word and
1201        // within other words. By default, all results are found.
1202        search_bar
1203            .update(cx, |search_bar, cx| search_bar.search("or", None, cx))
1204            .await
1205            .unwrap();
1206        editor.update(cx, |editor, cx| {
1207            assert_eq!(
1208                display_points_of(editor.all_text_background_highlights(cx)),
1209                &[
1210                    DisplayPoint::new(0, 24)..DisplayPoint::new(0, 26),
1211                    DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43),
1212                    DisplayPoint::new(2, 71)..DisplayPoint::new(2, 73),
1213                    DisplayPoint::new(3, 1)..DisplayPoint::new(3, 3),
1214                    DisplayPoint::new(3, 11)..DisplayPoint::new(3, 13),
1215                    DisplayPoint::new(3, 56)..DisplayPoint::new(3, 58),
1216                    DisplayPoint::new(3, 60)..DisplayPoint::new(3, 62),
1217                ]
1218            );
1219        });
1220
1221        // Switch to a whole word search.
1222        search_bar.update(cx, |search_bar, cx| {
1223            search_bar.toggle_search_option(SearchOptions::WHOLE_WORD, cx);
1224        });
1225        let mut editor_notifications = cx.notifications(&editor);
1226        editor_notifications.next().await;
1227        editor.update(cx, |editor, cx| {
1228            assert_eq!(
1229                display_points_of(editor.all_text_background_highlights(cx)),
1230                &[
1231                    DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43),
1232                    DisplayPoint::new(3, 11)..DisplayPoint::new(3, 13),
1233                    DisplayPoint::new(3, 56)..DisplayPoint::new(3, 58),
1234                ]
1235            );
1236        });
1237
1238        editor.update(cx, |editor, cx| {
1239            editor.change_selections(None, cx, |s| {
1240                s.select_display_ranges([DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)])
1241            });
1242        });
1243        search_bar.update(cx, |search_bar, cx| {
1244            assert_eq!(search_bar.active_match_index, Some(0));
1245            search_bar.select_next_match(&SelectNextMatch, cx);
1246            assert_eq!(
1247                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1248                [DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43)]
1249            );
1250        });
1251        search_bar.update(cx, |search_bar, _| {
1252            assert_eq!(search_bar.active_match_index, Some(0));
1253        });
1254
1255        search_bar.update(cx, |search_bar, cx| {
1256            search_bar.select_next_match(&SelectNextMatch, cx);
1257            assert_eq!(
1258                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1259                [DisplayPoint::new(3, 11)..DisplayPoint::new(3, 13)]
1260            );
1261        });
1262        search_bar.update(cx, |search_bar, _| {
1263            assert_eq!(search_bar.active_match_index, Some(1));
1264        });
1265
1266        search_bar.update(cx, |search_bar, cx| {
1267            search_bar.select_next_match(&SelectNextMatch, cx);
1268            assert_eq!(
1269                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1270                [DisplayPoint::new(3, 56)..DisplayPoint::new(3, 58)]
1271            );
1272        });
1273        search_bar.update(cx, |search_bar, _| {
1274            assert_eq!(search_bar.active_match_index, Some(2));
1275        });
1276
1277        search_bar.update(cx, |search_bar, cx| {
1278            search_bar.select_next_match(&SelectNextMatch, cx);
1279            assert_eq!(
1280                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1281                [DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43)]
1282            );
1283        });
1284        search_bar.update(cx, |search_bar, _| {
1285            assert_eq!(search_bar.active_match_index, Some(0));
1286        });
1287
1288        search_bar.update(cx, |search_bar, cx| {
1289            search_bar.select_prev_match(&SelectPrevMatch, cx);
1290            assert_eq!(
1291                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1292                [DisplayPoint::new(3, 56)..DisplayPoint::new(3, 58)]
1293            );
1294        });
1295        search_bar.update(cx, |search_bar, _| {
1296            assert_eq!(search_bar.active_match_index, Some(2));
1297        });
1298
1299        search_bar.update(cx, |search_bar, cx| {
1300            search_bar.select_prev_match(&SelectPrevMatch, cx);
1301            assert_eq!(
1302                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1303                [DisplayPoint::new(3, 11)..DisplayPoint::new(3, 13)]
1304            );
1305        });
1306        search_bar.update(cx, |search_bar, _| {
1307            assert_eq!(search_bar.active_match_index, Some(1));
1308        });
1309
1310        search_bar.update(cx, |search_bar, cx| {
1311            search_bar.select_prev_match(&SelectPrevMatch, cx);
1312            assert_eq!(
1313                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1314                [DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43)]
1315            );
1316        });
1317        search_bar.update(cx, |search_bar, _| {
1318            assert_eq!(search_bar.active_match_index, Some(0));
1319        });
1320
1321        // Park the cursor in between matches and ensure that going to the previous match selects
1322        // the closest match to the left.
1323        editor.update(cx, |editor, cx| {
1324            editor.change_selections(None, cx, |s| {
1325                s.select_display_ranges([DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)])
1326            });
1327        });
1328        search_bar.update(cx, |search_bar, cx| {
1329            assert_eq!(search_bar.active_match_index, Some(1));
1330            search_bar.select_prev_match(&SelectPrevMatch, cx);
1331            assert_eq!(
1332                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1333                [DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43)]
1334            );
1335        });
1336        search_bar.update(cx, |search_bar, _| {
1337            assert_eq!(search_bar.active_match_index, Some(0));
1338        });
1339
1340        // Park the cursor in between matches and ensure that going to the next match selects the
1341        // closest match to the right.
1342        editor.update(cx, |editor, cx| {
1343            editor.change_selections(None, cx, |s| {
1344                s.select_display_ranges([DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)])
1345            });
1346        });
1347        search_bar.update(cx, |search_bar, cx| {
1348            assert_eq!(search_bar.active_match_index, Some(1));
1349            search_bar.select_next_match(&SelectNextMatch, cx);
1350            assert_eq!(
1351                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1352                [DisplayPoint::new(3, 11)..DisplayPoint::new(3, 13)]
1353            );
1354        });
1355        search_bar.update(cx, |search_bar, _| {
1356            assert_eq!(search_bar.active_match_index, Some(1));
1357        });
1358
1359        // Park the cursor after the last match and ensure that going to the previous match selects
1360        // the last match.
1361        editor.update(cx, |editor, cx| {
1362            editor.change_selections(None, cx, |s| {
1363                s.select_display_ranges([DisplayPoint::new(3, 60)..DisplayPoint::new(3, 60)])
1364            });
1365        });
1366        search_bar.update(cx, |search_bar, cx| {
1367            assert_eq!(search_bar.active_match_index, Some(2));
1368            search_bar.select_prev_match(&SelectPrevMatch, cx);
1369            assert_eq!(
1370                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1371                [DisplayPoint::new(3, 56)..DisplayPoint::new(3, 58)]
1372            );
1373        });
1374        search_bar.update(cx, |search_bar, _| {
1375            assert_eq!(search_bar.active_match_index, Some(2));
1376        });
1377
1378        // Park the cursor after the last match and ensure that going to the next match selects the
1379        // first match.
1380        editor.update(cx, |editor, cx| {
1381            editor.change_selections(None, cx, |s| {
1382                s.select_display_ranges([DisplayPoint::new(3, 60)..DisplayPoint::new(3, 60)])
1383            });
1384        });
1385        search_bar.update(cx, |search_bar, cx| {
1386            assert_eq!(search_bar.active_match_index, Some(2));
1387            search_bar.select_next_match(&SelectNextMatch, cx);
1388            assert_eq!(
1389                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1390                [DisplayPoint::new(0, 41)..DisplayPoint::new(0, 43)]
1391            );
1392        });
1393        search_bar.update(cx, |search_bar, _| {
1394            assert_eq!(search_bar.active_match_index, Some(0));
1395        });
1396
1397        // Park the cursor before the first match and ensure that going to the previous match
1398        // selects the last match.
1399        editor.update(cx, |editor, cx| {
1400            editor.change_selections(None, cx, |s| {
1401                s.select_display_ranges([DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)])
1402            });
1403        });
1404        search_bar.update(cx, |search_bar, cx| {
1405            assert_eq!(search_bar.active_match_index, Some(0));
1406            search_bar.select_prev_match(&SelectPrevMatch, cx);
1407            assert_eq!(
1408                editor.update(cx, |editor, cx| editor.selections.display_ranges(cx)),
1409                [DisplayPoint::new(3, 56)..DisplayPoint::new(3, 58)]
1410            );
1411        });
1412        search_bar.update(cx, |search_bar, _| {
1413            assert_eq!(search_bar.active_match_index, Some(2));
1414        });
1415    }
1416
1417    #[gpui::test]
1418    async fn test_search_option_handling(cx: &mut TestAppContext) {
1419        let (editor, search_bar, cx) = init_test(cx);
1420
1421        // show with options should make current search case sensitive
1422        search_bar
1423            .update(cx, |search_bar, cx| {
1424                search_bar.show(cx);
1425                search_bar.search("us", Some(SearchOptions::CASE_SENSITIVE), cx)
1426            })
1427            .await
1428            .unwrap();
1429        let display_points_of = |background_highlights: Vec<(Range<DisplayPoint>, Hsla)>| {
1430            background_highlights
1431                .into_iter()
1432                .map(|(range, _)| range)
1433                .collect::<Vec<_>>()
1434        };
1435        editor.update(cx, |editor, cx| {
1436            assert_eq!(
1437                display_points_of(editor.all_text_background_highlights(cx)),
1438                &[DisplayPoint::new(2, 43)..DisplayPoint::new(2, 45),]
1439            );
1440        });
1441
1442        // search_suggested should restore default options
1443        search_bar.update(cx, |search_bar, cx| {
1444            search_bar.search_suggested(cx);
1445            assert_eq!(search_bar.search_options, SearchOptions::NONE)
1446        });
1447
1448        // toggling a search option should update the defaults
1449        search_bar
1450            .update(cx, |search_bar, cx| {
1451                search_bar.search("regex", Some(SearchOptions::CASE_SENSITIVE), cx)
1452            })
1453            .await
1454            .unwrap();
1455        search_bar.update(cx, |search_bar, cx| {
1456            search_bar.toggle_search_option(SearchOptions::WHOLE_WORD, cx)
1457        });
1458        let mut editor_notifications = cx.notifications(&editor);
1459        editor_notifications.next().await;
1460        editor.update(cx, |editor, cx| {
1461            assert_eq!(
1462                display_points_of(editor.all_text_background_highlights(cx)),
1463                &[DisplayPoint::new(0, 35)..DisplayPoint::new(0, 40),]
1464            );
1465        });
1466
1467        // defaults should still include whole word
1468        search_bar.update(cx, |search_bar, cx| {
1469            search_bar.search_suggested(cx);
1470            assert_eq!(
1471                search_bar.search_options,
1472                SearchOptions::CASE_SENSITIVE | SearchOptions::WHOLE_WORD
1473            )
1474        });
1475    }
1476
1477    #[gpui::test]
1478    async fn test_search_select_all_matches(cx: &mut TestAppContext) {
1479        init_globals(cx);
1480        let buffer_text = r#"
1481        A regular expression (shortened as regex or regexp;[1] also referred to as
1482        rational expression[2][3]) is a sequence of characters that specifies a search
1483        pattern in text. Usually such patterns are used by string-searching algorithms
1484        for "find" or "find and replace" operations on strings, or for input validation.
1485        "#
1486        .unindent();
1487        let expected_query_matches_count = buffer_text
1488            .chars()
1489            .filter(|c| c.to_ascii_lowercase() == 'a')
1490            .count();
1491        assert!(
1492            expected_query_matches_count > 1,
1493            "Should pick a query with multiple results"
1494        );
1495        let buffer = cx.new_model(|cx| {
1496            Buffer::new(
1497                0,
1498                BufferId::new(cx.entity_id().as_u64()).unwrap(),
1499                buffer_text,
1500            )
1501        });
1502        let window = cx.add_window(|_| gpui::Empty);
1503
1504        let editor = window.build_view(cx, |cx| Editor::for_buffer(buffer.clone(), None, cx));
1505
1506        let search_bar = window.build_view(cx, |cx| {
1507            let mut search_bar = BufferSearchBar::new(cx);
1508            search_bar.set_active_pane_item(Some(&editor), cx);
1509            search_bar.show(cx);
1510            search_bar
1511        });
1512
1513        window
1514            .update(cx, |_, cx| {
1515                search_bar.update(cx, |search_bar, cx| search_bar.search("a", None, cx))
1516            })
1517            .unwrap()
1518            .await
1519            .unwrap();
1520        let initial_selections = window
1521            .update(cx, |_, cx| {
1522                search_bar.update(cx, |search_bar, cx| {
1523                    let handle = search_bar.query_editor.focus_handle(cx);
1524                    cx.focus(&handle);
1525                    search_bar.activate_current_match(cx);
1526                });
1527                assert!(
1528                    !editor.read(cx).is_focused(cx),
1529                    "Initially, the editor should not be focused"
1530                );
1531                let initial_selections = editor.update(cx, |editor, cx| {
1532                    let initial_selections = editor.selections.display_ranges(cx);
1533                    assert_eq!(
1534                        initial_selections.len(), 1,
1535                        "Expected to have only one selection before adding carets to all matches, but got: {initial_selections:?}",
1536                    );
1537                    initial_selections
1538                });
1539                search_bar.update(cx, |search_bar, cx| {
1540                    assert_eq!(search_bar.active_match_index, Some(0));
1541                    let handle = search_bar.query_editor.focus_handle(cx);
1542                    cx.focus(&handle);
1543                    search_bar.select_all_matches(&SelectAllMatches, cx);
1544                });
1545                assert!(
1546                    editor.read(cx).is_focused(cx),
1547                    "Should focus editor after successful SelectAllMatches"
1548                );
1549                search_bar.update(cx, |search_bar, cx| {
1550                    let all_selections =
1551                        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx));
1552                    assert_eq!(
1553                        all_selections.len(),
1554                        expected_query_matches_count,
1555                        "Should select all `a` characters in the buffer, but got: {all_selections:?}"
1556                    );
1557                    assert_eq!(
1558                        search_bar.active_match_index,
1559                        Some(0),
1560                        "Match index should not change after selecting all matches"
1561                    );
1562                });
1563
1564                search_bar.update(cx, |this, cx| this.select_next_match(&SelectNextMatch, cx));
1565                initial_selections
1566            }).unwrap();
1567
1568        window
1569            .update(cx, |_, cx| {
1570                assert!(
1571                    editor.read(cx).is_focused(cx),
1572                    "Should still have editor focused after SelectNextMatch"
1573                );
1574                search_bar.update(cx, |search_bar, cx| {
1575                    let all_selections =
1576                        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx));
1577                    assert_eq!(
1578                        all_selections.len(),
1579                        1,
1580                        "On next match, should deselect items and select the next match"
1581                    );
1582                    assert_ne!(
1583                        all_selections, initial_selections,
1584                        "Next match should be different from the first selection"
1585                    );
1586                    assert_eq!(
1587                        search_bar.active_match_index,
1588                        Some(1),
1589                        "Match index should be updated to the next one"
1590                    );
1591                    let handle = search_bar.query_editor.focus_handle(cx);
1592                    cx.focus(&handle);
1593                    search_bar.select_all_matches(&SelectAllMatches, cx);
1594                });
1595            })
1596            .unwrap();
1597        window
1598            .update(cx, |_, cx| {
1599                assert!(
1600                    editor.read(cx).is_focused(cx),
1601                    "Should focus editor after successful SelectAllMatches"
1602                );
1603                search_bar.update(cx, |search_bar, cx| {
1604                    let all_selections =
1605                        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx));
1606                    assert_eq!(
1607                    all_selections.len(),
1608                    expected_query_matches_count,
1609                    "Should select all `a` characters in the buffer, but got: {all_selections:?}"
1610                );
1611                    assert_eq!(
1612                        search_bar.active_match_index,
1613                        Some(1),
1614                        "Match index should not change after selecting all matches"
1615                    );
1616                });
1617                search_bar.update(cx, |search_bar, cx| {
1618                    search_bar.select_prev_match(&SelectPrevMatch, cx);
1619                });
1620            })
1621            .unwrap();
1622        let last_match_selections = window
1623            .update(cx, |_, cx| {
1624                assert!(
1625                    editor.read(cx).is_focused(&cx),
1626                    "Should still have editor focused after SelectPrevMatch"
1627                );
1628
1629                search_bar.update(cx, |search_bar, cx| {
1630                    let all_selections =
1631                        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx));
1632                    assert_eq!(
1633                        all_selections.len(),
1634                        1,
1635                        "On previous match, should deselect items and select the previous item"
1636                    );
1637                    assert_eq!(
1638                        all_selections, initial_selections,
1639                        "Previous match should be the same as the first selection"
1640                    );
1641                    assert_eq!(
1642                        search_bar.active_match_index,
1643                        Some(0),
1644                        "Match index should be updated to the previous one"
1645                    );
1646                    all_selections
1647                })
1648            })
1649            .unwrap();
1650
1651        window
1652            .update(cx, |_, cx| {
1653                search_bar.update(cx, |search_bar, cx| {
1654                    let handle = search_bar.query_editor.focus_handle(cx);
1655                    cx.focus(&handle);
1656                    search_bar.search("abas_nonexistent_match", None, cx)
1657                })
1658            })
1659            .unwrap()
1660            .await
1661            .unwrap();
1662        window
1663            .update(cx, |_, cx| {
1664                search_bar.update(cx, |search_bar, cx| {
1665                    search_bar.select_all_matches(&SelectAllMatches, cx);
1666                });
1667                assert!(
1668                    editor.update(cx, |this, cx| !this.is_focused(cx.window_context())),
1669                    "Should not switch focus to editor if SelectAllMatches does not find any matches"
1670                );
1671                search_bar.update(cx, |search_bar, cx| {
1672                    let all_selections =
1673                        editor.update(cx, |editor, cx| editor.selections.display_ranges(cx));
1674                    assert_eq!(
1675                        all_selections, last_match_selections,
1676                        "Should not select anything new if there are no matches"
1677                    );
1678                    assert!(
1679                        search_bar.active_match_index.is_none(),
1680                        "For no matches, there should be no active match index"
1681                    );
1682                });
1683            })
1684            .unwrap();
1685    }
1686
1687    #[gpui::test]
1688    async fn test_search_query_history(cx: &mut TestAppContext) {
1689        init_globals(cx);
1690        let buffer_text = r#"
1691        A regular expression (shortened as regex or regexp;[1] also referred to as
1692        rational expression[2][3]) is a sequence of characters that specifies a search
1693        pattern in text. Usually such patterns are used by string-searching algorithms
1694        for "find" or "find and replace" operations on strings, or for input validation.
1695        "#
1696        .unindent();
1697        let buffer = cx.new_model(|cx| {
1698            Buffer::new(
1699                0,
1700                BufferId::new(cx.entity_id().as_u64()).unwrap(),
1701                buffer_text,
1702            )
1703        });
1704        let cx = cx.add_empty_window();
1705
1706        let editor = cx.new_view(|cx| Editor::for_buffer(buffer.clone(), None, cx));
1707
1708        let search_bar = cx.new_view(|cx| {
1709            let mut search_bar = BufferSearchBar::new(cx);
1710            search_bar.set_active_pane_item(Some(&editor), cx);
1711            search_bar.show(cx);
1712            search_bar
1713        });
1714
1715        // Add 3 search items into the history.
1716        search_bar
1717            .update(cx, |search_bar, cx| search_bar.search("a", None, cx))
1718            .await
1719            .unwrap();
1720        search_bar
1721            .update(cx, |search_bar, cx| search_bar.search("b", None, cx))
1722            .await
1723            .unwrap();
1724        search_bar
1725            .update(cx, |search_bar, cx| {
1726                search_bar.search("c", Some(SearchOptions::CASE_SENSITIVE), cx)
1727            })
1728            .await
1729            .unwrap();
1730        // Ensure that the latest search is active.
1731        search_bar.update(cx, |search_bar, cx| {
1732            assert_eq!(search_bar.query(cx), "c");
1733            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1734        });
1735
1736        // Next history query after the latest should set the query to the empty string.
1737        search_bar.update(cx, |search_bar, cx| {
1738            search_bar.next_history_query(&NextHistoryQuery, cx);
1739        });
1740        search_bar.update(cx, |search_bar, cx| {
1741            assert_eq!(search_bar.query(cx), "");
1742            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1743        });
1744        search_bar.update(cx, |search_bar, cx| {
1745            search_bar.next_history_query(&NextHistoryQuery, cx);
1746        });
1747        search_bar.update(cx, |search_bar, cx| {
1748            assert_eq!(search_bar.query(cx), "");
1749            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1750        });
1751
1752        // First previous query for empty current query should set the query to the latest.
1753        search_bar.update(cx, |search_bar, cx| {
1754            search_bar.previous_history_query(&PreviousHistoryQuery, cx);
1755        });
1756        search_bar.update(cx, |search_bar, cx| {
1757            assert_eq!(search_bar.query(cx), "c");
1758            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1759        });
1760
1761        // Further previous items should go over the history in reverse order.
1762        search_bar.update(cx, |search_bar, cx| {
1763            search_bar.previous_history_query(&PreviousHistoryQuery, cx);
1764        });
1765        search_bar.update(cx, |search_bar, cx| {
1766            assert_eq!(search_bar.query(cx), "b");
1767            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1768        });
1769
1770        // Previous items should never go behind the first history item.
1771        search_bar.update(cx, |search_bar, cx| {
1772            search_bar.previous_history_query(&PreviousHistoryQuery, cx);
1773        });
1774        search_bar.update(cx, |search_bar, cx| {
1775            assert_eq!(search_bar.query(cx), "a");
1776            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1777        });
1778        search_bar.update(cx, |search_bar, cx| {
1779            search_bar.previous_history_query(&PreviousHistoryQuery, cx);
1780        });
1781        search_bar.update(cx, |search_bar, cx| {
1782            assert_eq!(search_bar.query(cx), "a");
1783            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1784        });
1785
1786        // Next items should go over the history in the original order.
1787        search_bar.update(cx, |search_bar, cx| {
1788            search_bar.next_history_query(&NextHistoryQuery, cx);
1789        });
1790        search_bar.update(cx, |search_bar, cx| {
1791            assert_eq!(search_bar.query(cx), "b");
1792            assert_eq!(search_bar.search_options, SearchOptions::CASE_SENSITIVE);
1793        });
1794
1795        search_bar
1796            .update(cx, |search_bar, cx| search_bar.search("ba", None, cx))
1797            .await
1798            .unwrap();
1799        search_bar.update(cx, |search_bar, cx| {
1800            assert_eq!(search_bar.query(cx), "ba");
1801            assert_eq!(search_bar.search_options, SearchOptions::NONE);
1802        });
1803
1804        // New search input should add another entry to history and move the selection to the end of the history.
1805        search_bar.update(cx, |search_bar, cx| {
1806            search_bar.previous_history_query(&PreviousHistoryQuery, cx);
1807        });
1808        search_bar.update(cx, |search_bar, cx| {
1809            assert_eq!(search_bar.query(cx), "c");
1810            assert_eq!(search_bar.search_options, SearchOptions::NONE);
1811        });
1812        search_bar.update(cx, |search_bar, cx| {
1813            search_bar.previous_history_query(&PreviousHistoryQuery, cx);
1814        });
1815        search_bar.update(cx, |search_bar, cx| {
1816            assert_eq!(search_bar.query(cx), "b");
1817            assert_eq!(search_bar.search_options, SearchOptions::NONE);
1818        });
1819        search_bar.update(cx, |search_bar, cx| {
1820            search_bar.next_history_query(&NextHistoryQuery, cx);
1821        });
1822        search_bar.update(cx, |search_bar, cx| {
1823            assert_eq!(search_bar.query(cx), "c");
1824            assert_eq!(search_bar.search_options, SearchOptions::NONE);
1825        });
1826        search_bar.update(cx, |search_bar, cx| {
1827            search_bar.next_history_query(&NextHistoryQuery, cx);
1828        });
1829        search_bar.update(cx, |search_bar, cx| {
1830            assert_eq!(search_bar.query(cx), "ba");
1831            assert_eq!(search_bar.search_options, SearchOptions::NONE);
1832        });
1833        search_bar.update(cx, |search_bar, cx| {
1834            search_bar.next_history_query(&NextHistoryQuery, cx);
1835        });
1836        search_bar.update(cx, |search_bar, cx| {
1837            assert_eq!(search_bar.query(cx), "");
1838            assert_eq!(search_bar.search_options, SearchOptions::NONE);
1839        });
1840    }
1841
1842    #[gpui::test]
1843    async fn test_replace_simple(cx: &mut TestAppContext) {
1844        let (editor, search_bar, cx) = init_test(cx);
1845
1846        search_bar
1847            .update(cx, |search_bar, cx| {
1848                search_bar.search("expression", None, cx)
1849            })
1850            .await
1851            .unwrap();
1852
1853        search_bar.update(cx, |search_bar, cx| {
1854            search_bar.replacement_editor.update(cx, |editor, cx| {
1855                // We use $1 here as initially we should be in Text mode, where `$1` should be treated literally.
1856                editor.set_text("expr$1", cx);
1857            });
1858            search_bar.replace_all(&ReplaceAll, cx)
1859        });
1860        assert_eq!(
1861            editor.update(cx, |this, cx| { this.text(cx) }),
1862            r#"
1863        A regular expr$1 (shortened as regex or regexp;[1] also referred to as
1864        rational expr$1[2][3]) is a sequence of characters that specifies a search
1865        pattern in text. Usually such patterns are used by string-searching algorithms
1866        for "find" or "find and replace" operations on strings, or for input validation.
1867        "#
1868            .unindent()
1869        );
1870
1871        // Search for word boundaries and replace just a single one.
1872        search_bar
1873            .update(cx, |search_bar, cx| {
1874                search_bar.search("or", Some(SearchOptions::WHOLE_WORD), cx)
1875            })
1876            .await
1877            .unwrap();
1878
1879        search_bar.update(cx, |search_bar, cx| {
1880            search_bar.replacement_editor.update(cx, |editor, cx| {
1881                editor.set_text("banana", cx);
1882            });
1883            search_bar.replace_next(&ReplaceNext, cx)
1884        });
1885        // Notice how the first or in the text (shORtened) is not replaced. Neither are the remaining hits of `or` in the text.
1886        assert_eq!(
1887            editor.update(cx, |this, cx| { this.text(cx) }),
1888            r#"
1889        A regular expr$1 (shortened as regex banana regexp;[1] also referred to as
1890        rational expr$1[2][3]) is a sequence of characters that specifies a search
1891        pattern in text. Usually such patterns are used by string-searching algorithms
1892        for "find" or "find and replace" operations on strings, or for input validation.
1893        "#
1894            .unindent()
1895        );
1896        // Let's turn on regex mode.
1897        search_bar
1898            .update(cx, |search_bar, cx| {
1899                search_bar.activate_search_mode(SearchMode::Regex, cx);
1900                search_bar.search("\\[([^\\]]+)\\]", None, cx)
1901            })
1902            .await
1903            .unwrap();
1904        search_bar.update(cx, |search_bar, cx| {
1905            search_bar.replacement_editor.update(cx, |editor, cx| {
1906                editor.set_text("${1}number", cx);
1907            });
1908            search_bar.replace_all(&ReplaceAll, cx)
1909        });
1910        assert_eq!(
1911            editor.update(cx, |this, cx| { this.text(cx) }),
1912            r#"
1913        A regular expr$1 (shortened as regex banana regexp;1number also referred to as
1914        rational expr$12number3number) is a sequence of characters that specifies a search
1915        pattern in text. Usually such patterns are used by string-searching algorithms
1916        for "find" or "find and replace" operations on strings, or for input validation.
1917        "#
1918            .unindent()
1919        );
1920        // Now with a whole-word twist.
1921        search_bar
1922            .update(cx, |search_bar, cx| {
1923                search_bar.activate_search_mode(SearchMode::Regex, cx);
1924                search_bar.search("a\\w+s", Some(SearchOptions::WHOLE_WORD), cx)
1925            })
1926            .await
1927            .unwrap();
1928        search_bar.update(cx, |search_bar, cx| {
1929            search_bar.replacement_editor.update(cx, |editor, cx| {
1930                editor.set_text("things", cx);
1931            });
1932            search_bar.replace_all(&ReplaceAll, cx)
1933        });
1934        // The only word affected by this edit should be `algorithms`, even though there's a bunch
1935        // of words in this text that would match this regex if not for WHOLE_WORD.
1936        assert_eq!(
1937            editor.update(cx, |this, cx| { this.text(cx) }),
1938            r#"
1939        A regular expr$1 (shortened as regex banana regexp;1number also referred to as
1940        rational expr$12number3number) is a sequence of characters that specifies a search
1941        pattern in text. Usually such patterns are used by string-searching things
1942        for "find" or "find and replace" operations on strings, or for input validation.
1943        "#
1944            .unindent()
1945        );
1946    }
1947
1948    struct ReplacementTestParams<'a> {
1949        editor: &'a View<Editor>,
1950        search_bar: &'a View<BufferSearchBar>,
1951        cx: &'a mut VisualTestContext,
1952        search_mode: SearchMode,
1953        search_text: &'static str,
1954        search_options: Option<SearchOptions>,
1955        replacement_text: &'static str,
1956        replace_all: bool,
1957        expected_text: String,
1958    }
1959
1960    async fn run_replacement_test(options: ReplacementTestParams<'_>) {
1961        options
1962            .search_bar
1963            .update(options.cx, |search_bar, cx| {
1964                search_bar.activate_search_mode(options.search_mode, cx);
1965                search_bar.search(options.search_text, options.search_options, cx)
1966            })
1967            .await
1968            .unwrap();
1969
1970        options.search_bar.update(options.cx, |search_bar, cx| {
1971            search_bar.replacement_editor.update(cx, |editor, cx| {
1972                editor.set_text(options.replacement_text, cx);
1973            });
1974
1975            if options.replace_all {
1976                search_bar.replace_all(&ReplaceAll, cx)
1977            } else {
1978                search_bar.replace_next(&ReplaceNext, cx)
1979            }
1980        });
1981
1982        assert_eq!(
1983            options
1984                .editor
1985                .update(options.cx, |this, cx| { this.text(cx) }),
1986            options.expected_text
1987        );
1988    }
1989
1990    #[gpui::test]
1991    async fn test_replace_special_characters(cx: &mut TestAppContext) {
1992        let (editor, search_bar, cx) = init_test(cx);
1993
1994        run_replacement_test(ReplacementTestParams {
1995            editor: &editor,
1996            search_bar: &search_bar,
1997            cx,
1998            search_mode: SearchMode::Text,
1999            search_text: "expression",
2000            search_options: None,
2001            replacement_text: r"\n",
2002            replace_all: true,
2003            expected_text: r#"
2004            A regular \n (shortened as regex or regexp;[1] also referred to as
2005            rational \n[2][3]) is a sequence of characters that specifies a search
2006            pattern in text. Usually such patterns are used by string-searching algorithms
2007            for "find" or "find and replace" operations on strings, or for input validation.
2008            "#
2009            .unindent(),
2010        })
2011        .await;
2012
2013        run_replacement_test(ReplacementTestParams {
2014            editor: &editor,
2015            search_bar: &search_bar,
2016            cx,
2017            search_mode: SearchMode::Regex,
2018            search_text: "or",
2019            search_options: Some(SearchOptions::WHOLE_WORD),
2020            replacement_text: r"\\\n\\\\",
2021            replace_all: false,
2022            expected_text: r#"
2023            A regular \n (shortened as regex \
2024            \\ regexp;[1] also referred to as
2025            rational \n[2][3]) is a sequence of characters that specifies a search
2026            pattern in text. Usually such patterns are used by string-searching algorithms
2027            for "find" or "find and replace" operations on strings, or for input validation.
2028            "#
2029            .unindent(),
2030        })
2031        .await;
2032
2033        run_replacement_test(ReplacementTestParams {
2034            editor: &editor,
2035            search_bar: &search_bar,
2036            cx,
2037            search_mode: SearchMode::Regex,
2038            search_text: r"(that|used) ",
2039            search_options: None,
2040            replacement_text: r"$1\n",
2041            replace_all: true,
2042            expected_text: r#"
2043            A regular \n (shortened as regex \
2044            \\ regexp;[1] also referred to as
2045            rational \n[2][3]) is a sequence of characters that
2046            specifies a search
2047            pattern in text. Usually such patterns are used
2048            by string-searching algorithms
2049            for "find" or "find and replace" operations on strings, or for input validation.
2050            "#
2051            .unindent(),
2052        })
2053        .await;
2054    }
2055
2056    #[gpui::test]
2057    async fn test_invalid_regexp_search_after_valid(cx: &mut TestAppContext) {
2058        let (editor, search_bar, cx) = init_test(cx);
2059        let display_points_of = |background_highlights: Vec<(Range<DisplayPoint>, Hsla)>| {
2060            background_highlights
2061                .into_iter()
2062                .map(|(range, _)| range)
2063                .collect::<Vec<_>>()
2064        };
2065        // Search using valid regexp
2066        search_bar
2067            .update(cx, |search_bar, cx| {
2068                search_bar.activate_search_mode(SearchMode::Regex, cx);
2069                search_bar.search("expression", None, cx)
2070            })
2071            .await
2072            .unwrap();
2073        editor.update(cx, |editor, cx| {
2074            assert_eq!(
2075                display_points_of(editor.all_text_background_highlights(cx)),
2076                &[
2077                    DisplayPoint::new(0, 10)..DisplayPoint::new(0, 20),
2078                    DisplayPoint::new(1, 9)..DisplayPoint::new(1, 19),
2079                ],
2080            );
2081        });
2082
2083        // Now, the expression is invalid
2084        search_bar
2085            .update(cx, |search_bar, cx| {
2086                search_bar.search("expression (", None, cx)
2087            })
2088            .await
2089            .unwrap_err();
2090        editor.update(cx, |editor, cx| {
2091            assert!(display_points_of(editor.all_text_background_highlights(cx)).is_empty(),);
2092        });
2093    }
2094}