1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(Unfold);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext) {
145 cx.add_bindings(vec![
146 Binding::new("escape", Cancel, Some("Editor")),
147 Binding::new("backspace", Backspace, Some("Editor")),
148 Binding::new("ctrl-h", Backspace, Some("Editor")),
149 Binding::new("delete", Delete, Some("Editor")),
150 Binding::new("ctrl-d", Delete, Some("Editor")),
151 Binding::new("enter", Newline, Some("Editor && mode == full")),
152 Binding::new(
153 "alt-enter",
154 Input("\n".into()),
155 Some("Editor && mode == auto_height"),
156 ),
157 Binding::new(
158 "enter",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new(
163 "enter",
164 ConfirmCodeAction(None),
165 Some("Editor && showing_code_actions"),
166 ),
167 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
168 Binding::new("tab", Tab, Some("Editor")),
169 Binding::new(
170 "tab",
171 ConfirmCompletion(None),
172 Some("Editor && showing_completions"),
173 ),
174 Binding::new("shift-tab", Outdent, Some("Editor")),
175 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
176 Binding::new(
177 "alt-backspace",
178 DeleteToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
187 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
188 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
189 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
190 Binding::new("cmd-x", Cut, Some("Editor")),
191 Binding::new("cmd-c", Copy, Some("Editor")),
192 Binding::new("cmd-v", Paste, Some("Editor")),
193 Binding::new("cmd-z", Undo, Some("Editor")),
194 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
195 Binding::new("up", MoveUp, Some("Editor")),
196 Binding::new("down", MoveDown, Some("Editor")),
197 Binding::new("left", MoveLeft, Some("Editor")),
198 Binding::new("right", MoveRight, Some("Editor")),
199 Binding::new("ctrl-p", MoveUp, Some("Editor")),
200 Binding::new("ctrl-n", MoveDown, Some("Editor")),
201 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
202 Binding::new("ctrl-f", MoveRight, Some("Editor")),
203 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
207 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
208 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
211 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
212 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
213 Binding::new("shift-up", SelectUp, Some("Editor")),
214 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
215 Binding::new("shift-down", SelectDown, Some("Editor")),
216 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
217 Binding::new("shift-left", SelectLeft, Some("Editor")),
218 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
219 Binding::new("shift-right", SelectRight, Some("Editor")),
220 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
221 Binding::new(
222 "alt-shift-left",
223 SelectToPreviousWordBoundary,
224 Some("Editor"),
225 ),
226 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
227 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new(
230 "cmd-shift-left",
231 SelectToBeginningOfLine(true),
232 Some("Editor"),
233 ),
234 Binding::new(
235 "ctrl-shift-A",
236 SelectToBeginningOfLine(true),
237 Some("Editor"),
238 ),
239 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
240 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
242 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
243 Binding::new("cmd-a", SelectAll, Some("Editor")),
244 Binding::new("cmd-l", SelectLine, Some("Editor")),
245 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
246 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
247 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
249 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
251 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
252 Binding::new("cmd-/", ToggleComments, Some("Editor")),
253 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
254 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
258 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
259 Binding::new("f2", Rename, Some("Editor")),
260 Binding::new("f12", GoToDefinition, Some("Editor")),
261 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
262 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
263 Binding::new("pageup", PageUp, Some("Editor")),
264 Binding::new("pagedown", PageDown, Some("Editor")),
265 Binding::new("alt-cmd-[", Fold, Some("Editor")),
266 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
267 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
268 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
269 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
270 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
271 ]);
272
273 cx.add_action(Editor::open_new);
274 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
275 cx.add_action(Editor::select);
276 cx.add_action(Editor::cancel);
277 cx.add_action(Editor::handle_input);
278 cx.add_action(Editor::newline);
279 cx.add_action(Editor::backspace);
280 cx.add_action(Editor::delete);
281 cx.add_action(Editor::tab);
282 cx.add_action(Editor::outdent);
283 cx.add_action(Editor::delete_line);
284 cx.add_action(Editor::delete_to_previous_word_start);
285 cx.add_action(Editor::delete_to_next_word_end);
286 cx.add_action(Editor::delete_to_beginning_of_line);
287 cx.add_action(Editor::delete_to_end_of_line);
288 cx.add_action(Editor::cut_to_end_of_line);
289 cx.add_action(Editor::duplicate_line);
290 cx.add_action(Editor::move_line_up);
291 cx.add_action(Editor::move_line_down);
292 cx.add_action(Editor::cut);
293 cx.add_action(Editor::copy);
294 cx.add_action(Editor::paste);
295 cx.add_action(Editor::undo);
296 cx.add_action(Editor::redo);
297 cx.add_action(Editor::move_up);
298 cx.add_action(Editor::move_down);
299 cx.add_action(Editor::move_left);
300 cx.add_action(Editor::move_right);
301 cx.add_action(Editor::move_to_previous_word_start);
302 cx.add_action(Editor::move_to_next_word_end);
303 cx.add_action(Editor::move_to_beginning_of_line);
304 cx.add_action(Editor::move_to_end_of_line);
305 cx.add_action(Editor::move_to_beginning);
306 cx.add_action(Editor::move_to_end);
307 cx.add_action(Editor::select_up);
308 cx.add_action(Editor::select_down);
309 cx.add_action(Editor::select_left);
310 cx.add_action(Editor::select_right);
311 cx.add_action(Editor::select_to_previous_word_start);
312 cx.add_action(Editor::select_to_next_word_end);
313 cx.add_action(Editor::select_to_beginning_of_line);
314 cx.add_action(Editor::select_to_end_of_line);
315 cx.add_action(Editor::select_to_beginning);
316 cx.add_action(Editor::select_to_end);
317 cx.add_action(Editor::select_all);
318 cx.add_action(Editor::select_line);
319 cx.add_action(Editor::split_selection_into_lines);
320 cx.add_action(Editor::add_selection_above);
321 cx.add_action(Editor::add_selection_below);
322 cx.add_action(Editor::select_next);
323 cx.add_action(Editor::toggle_comments);
324 cx.add_action(Editor::select_larger_syntax_node);
325 cx.add_action(Editor::select_smaller_syntax_node);
326 cx.add_action(Editor::move_to_enclosing_bracket);
327 cx.add_action(Editor::go_to_diagnostic);
328 cx.add_action(Editor::go_to_definition);
329 cx.add_action(Editor::page_up);
330 cx.add_action(Editor::page_down);
331 cx.add_action(Editor::fold);
332 cx.add_action(Editor::unfold);
333 cx.add_action(Editor::fold_selected_ranges);
334 cx.add_action(Editor::show_completions);
335 cx.add_action(Editor::toggle_code_actions);
336 cx.add_action(Editor::open_excerpts);
337 cx.add_async_action(Editor::confirm_completion);
338 cx.add_async_action(Editor::confirm_code_action);
339 cx.add_async_action(Editor::rename);
340 cx.add_async_action(Editor::confirm_rename);
341 cx.add_async_action(Editor::find_all_references);
342
343 workspace::register_project_item(cx, |project, buffer, cx| {
344 Editor::for_buffer(buffer, Some(project), cx)
345 });
346}
347
348trait InvalidationRegion {
349 fn ranges(&self) -> &[Range<Anchor>];
350}
351
352#[derive(Clone, Debug)]
353pub enum SelectPhase {
354 Begin {
355 position: DisplayPoint,
356 add: bool,
357 click_count: usize,
358 },
359 BeginColumnar {
360 position: DisplayPoint,
361 overshoot: u32,
362 },
363 Extend {
364 position: DisplayPoint,
365 click_count: usize,
366 },
367 Update {
368 position: DisplayPoint,
369 overshoot: u32,
370 scroll_position: Vector2F,
371 },
372 End,
373}
374
375#[derive(Clone, Debug)]
376pub enum SelectMode {
377 Character,
378 Word(Range<Anchor>),
379 Line(Range<Anchor>),
380 All,
381}
382
383#[derive(PartialEq, Eq)]
384pub enum Autoscroll {
385 Fit,
386 Center,
387 Newest,
388}
389
390#[derive(Copy, Clone, PartialEq, Eq)]
391pub enum EditorMode {
392 SingleLine,
393 AutoHeight { max_lines: usize },
394 Full,
395}
396
397#[derive(Clone)]
398pub enum SoftWrap {
399 None,
400 EditorWidth,
401 Column(u32),
402}
403
404#[derive(Clone)]
405pub struct EditorStyle {
406 pub text: TextStyle,
407 pub placeholder_text: Option<TextStyle>,
408 pub theme: theme::Editor,
409}
410
411type CompletionId = usize;
412
413pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
414
415type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
416
417pub struct Editor {
418 handle: WeakViewHandle<Self>,
419 buffer: ModelHandle<MultiBuffer>,
420 display_map: ModelHandle<DisplayMap>,
421 next_selection_id: usize,
422 selections: Arc<[Selection<Anchor>]>,
423 pending_selection: Option<PendingSelection>,
424 columnar_selection_tail: Option<Anchor>,
425 add_selections_state: Option<AddSelectionsState>,
426 select_next_state: Option<SelectNextState>,
427 selection_history:
428 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
429 autoclose_stack: InvalidationStack<BracketPairState>,
430 snippet_stack: InvalidationStack<SnippetState>,
431 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
432 active_diagnostics: Option<ActiveDiagnosticGroup>,
433 scroll_position: Vector2F,
434 scroll_top_anchor: Option<Anchor>,
435 autoscroll_request: Option<Autoscroll>,
436 soft_wrap_mode_override: Option<settings::SoftWrap>,
437 get_field_editor_theme: Option<GetFieldEditorTheme>,
438 override_text_style: Option<Box<OverrideTextStyle>>,
439 project: Option<ModelHandle<Project>>,
440 focused: bool,
441 show_local_cursors: bool,
442 show_local_selections: bool,
443 blink_epoch: usize,
444 blinking_paused: bool,
445 mode: EditorMode,
446 vertical_scroll_margin: f32,
447 placeholder_text: Option<Arc<str>>,
448 highlighted_rows: Option<Range<u32>>,
449 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
450 nav_history: Option<ItemNavHistory>,
451 context_menu: Option<ContextMenu>,
452 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
453 next_completion_id: CompletionId,
454 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
455 code_actions_task: Option<Task<()>>,
456 document_highlights_task: Option<Task<()>>,
457 pending_rename: Option<RenameState>,
458 searchable: bool,
459 cursor_shape: CursorShape,
460}
461
462pub struct EditorSnapshot {
463 pub mode: EditorMode,
464 pub display_snapshot: DisplaySnapshot,
465 pub placeholder_text: Option<Arc<str>>,
466 is_focused: bool,
467 scroll_position: Vector2F,
468 scroll_top_anchor: Option<Anchor>,
469}
470
471#[derive(Clone)]
472pub struct PendingSelection {
473 selection: Selection<Anchor>,
474 mode: SelectMode,
475}
476
477struct AddSelectionsState {
478 above: bool,
479 stack: Vec<usize>,
480}
481
482struct SelectNextState {
483 query: AhoCorasick,
484 wordwise: bool,
485 done: bool,
486}
487
488struct BracketPairState {
489 ranges: Vec<Range<Anchor>>,
490 pair: BracketPair,
491}
492
493struct SnippetState {
494 ranges: Vec<Vec<Range<Anchor>>>,
495 active_index: usize,
496}
497
498pub struct RenameState {
499 pub range: Range<Anchor>,
500 pub old_name: String,
501 pub editor: ViewHandle<Editor>,
502 block_id: BlockId,
503}
504
505struct InvalidationStack<T>(Vec<T>);
506
507enum ContextMenu {
508 Completions(CompletionsMenu),
509 CodeActions(CodeActionsMenu),
510}
511
512impl ContextMenu {
513 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
514 if self.visible() {
515 match self {
516 ContextMenu::Completions(menu) => menu.select_prev(cx),
517 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
518 }
519 true
520 } else {
521 false
522 }
523 }
524
525 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
526 if self.visible() {
527 match self {
528 ContextMenu::Completions(menu) => menu.select_next(cx),
529 ContextMenu::CodeActions(menu) => menu.select_next(cx),
530 }
531 true
532 } else {
533 false
534 }
535 }
536
537 fn visible(&self) -> bool {
538 match self {
539 ContextMenu::Completions(menu) => menu.visible(),
540 ContextMenu::CodeActions(menu) => menu.visible(),
541 }
542 }
543
544 fn render(
545 &self,
546 cursor_position: DisplayPoint,
547 style: EditorStyle,
548 cx: &AppContext,
549 ) -> (DisplayPoint, ElementBox) {
550 match self {
551 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
552 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
553 }
554 }
555}
556
557struct CompletionsMenu {
558 id: CompletionId,
559 initial_position: Anchor,
560 buffer: ModelHandle<Buffer>,
561 completions: Arc<[Completion]>,
562 match_candidates: Vec<StringMatchCandidate>,
563 matches: Arc<[StringMatch]>,
564 selected_item: usize,
565 list: UniformListState,
566}
567
568impl CompletionsMenu {
569 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
570 if self.selected_item > 0 {
571 self.selected_item -= 1;
572 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
573 }
574 cx.notify();
575 }
576
577 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
578 if self.selected_item + 1 < self.matches.len() {
579 self.selected_item += 1;
580 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
581 }
582 cx.notify();
583 }
584
585 fn visible(&self) -> bool {
586 !self.matches.is_empty()
587 }
588
589 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
590 enum CompletionTag {}
591
592 let completions = self.completions.clone();
593 let matches = self.matches.clone();
594 let selected_item = self.selected_item;
595 let container_style = style.autocomplete.container;
596 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
597 let start_ix = range.start;
598 for (ix, mat) in matches[range].iter().enumerate() {
599 let completion = &completions[mat.candidate_id];
600 let item_ix = start_ix + ix;
601 items.push(
602 MouseEventHandler::new::<CompletionTag, _, _>(
603 mat.candidate_id,
604 cx,
605 |state, _| {
606 let item_style = if item_ix == selected_item {
607 style.autocomplete.selected_item
608 } else if state.hovered {
609 style.autocomplete.hovered_item
610 } else {
611 style.autocomplete.item
612 };
613
614 Text::new(completion.label.text.clone(), style.text.clone())
615 .with_soft_wrap(false)
616 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
617 &completion.label.text,
618 style.text.color.into(),
619 styled_runs_for_code_label(&completion.label, &style.syntax),
620 &mat.positions,
621 ))
622 .contained()
623 .with_style(item_style)
624 .boxed()
625 },
626 )
627 .with_cursor_style(CursorStyle::PointingHand)
628 .on_mouse_down(move |cx| {
629 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
630 })
631 .boxed(),
632 );
633 }
634 })
635 .with_width_from_item(
636 self.matches
637 .iter()
638 .enumerate()
639 .max_by_key(|(_, mat)| {
640 self.completions[mat.candidate_id]
641 .label
642 .text
643 .chars()
644 .count()
645 })
646 .map(|(ix, _)| ix),
647 )
648 .contained()
649 .with_style(container_style)
650 .boxed()
651 }
652
653 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
654 let mut matches = if let Some(query) = query {
655 fuzzy::match_strings(
656 &self.match_candidates,
657 query,
658 false,
659 100,
660 &Default::default(),
661 executor,
662 )
663 .await
664 } else {
665 self.match_candidates
666 .iter()
667 .enumerate()
668 .map(|(candidate_id, candidate)| StringMatch {
669 candidate_id,
670 score: Default::default(),
671 positions: Default::default(),
672 string: candidate.string.clone(),
673 })
674 .collect()
675 };
676 matches.sort_unstable_by_key(|mat| {
677 (
678 Reverse(OrderedFloat(mat.score)),
679 self.completions[mat.candidate_id].sort_key(),
680 )
681 });
682
683 for mat in &mut matches {
684 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
685 for position in &mut mat.positions {
686 *position += filter_start;
687 }
688 }
689
690 self.matches = matches.into();
691 }
692}
693
694#[derive(Clone)]
695struct CodeActionsMenu {
696 actions: Arc<[CodeAction]>,
697 buffer: ModelHandle<Buffer>,
698 selected_item: usize,
699 list: UniformListState,
700 deployed_from_indicator: bool,
701}
702
703impl CodeActionsMenu {
704 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
705 if self.selected_item > 0 {
706 self.selected_item -= 1;
707 cx.notify()
708 }
709 }
710
711 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
712 if self.selected_item + 1 < self.actions.len() {
713 self.selected_item += 1;
714 cx.notify()
715 }
716 }
717
718 fn visible(&self) -> bool {
719 !self.actions.is_empty()
720 }
721
722 fn render(
723 &self,
724 mut cursor_position: DisplayPoint,
725 style: EditorStyle,
726 ) -> (DisplayPoint, ElementBox) {
727 enum ActionTag {}
728
729 let container_style = style.autocomplete.container;
730 let actions = self.actions.clone();
731 let selected_item = self.selected_item;
732 let element =
733 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
734 let start_ix = range.start;
735 for (ix, action) in actions[range].iter().enumerate() {
736 let item_ix = start_ix + ix;
737 items.push(
738 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
739 let item_style = if item_ix == selected_item {
740 style.autocomplete.selected_item
741 } else if state.hovered {
742 style.autocomplete.hovered_item
743 } else {
744 style.autocomplete.item
745 };
746
747 Text::new(action.lsp_action.title.clone(), style.text.clone())
748 .with_soft_wrap(false)
749 .contained()
750 .with_style(item_style)
751 .boxed()
752 })
753 .with_cursor_style(CursorStyle::PointingHand)
754 .on_mouse_down(move |cx| {
755 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
756 })
757 .boxed(),
758 );
759 }
760 })
761 .with_width_from_item(
762 self.actions
763 .iter()
764 .enumerate()
765 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
766 .map(|(ix, _)| ix),
767 )
768 .contained()
769 .with_style(container_style)
770 .boxed();
771
772 if self.deployed_from_indicator {
773 *cursor_position.column_mut() = 0;
774 }
775
776 (cursor_position, element)
777 }
778}
779
780#[derive(Debug)]
781struct ActiveDiagnosticGroup {
782 primary_range: Range<Anchor>,
783 primary_message: String,
784 blocks: HashMap<BlockId, Diagnostic>,
785 is_valid: bool,
786}
787
788#[derive(Serialize, Deserialize)]
789struct ClipboardSelection {
790 len: usize,
791 is_entire_line: bool,
792}
793
794pub struct NavigationData {
795 anchor: Anchor,
796 offset: usize,
797}
798
799impl Editor {
800 pub fn single_line(
801 field_editor_style: Option<GetFieldEditorTheme>,
802 cx: &mut ViewContext<Self>,
803 ) -> Self {
804 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
805 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
806 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
807 }
808
809 pub fn auto_height(
810 max_lines: usize,
811 field_editor_style: Option<GetFieldEditorTheme>,
812 cx: &mut ViewContext<Self>,
813 ) -> Self {
814 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
815 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
816 Self::new(
817 EditorMode::AutoHeight { max_lines },
818 buffer,
819 None,
820 field_editor_style,
821 cx,
822 )
823 }
824
825 pub fn for_buffer(
826 buffer: ModelHandle<Buffer>,
827 project: Option<ModelHandle<Project>>,
828 cx: &mut ViewContext<Self>,
829 ) -> Self {
830 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
831 Self::new(EditorMode::Full, buffer, project, None, cx)
832 }
833
834 pub fn for_multibuffer(
835 buffer: ModelHandle<MultiBuffer>,
836 project: Option<ModelHandle<Project>>,
837 cx: &mut ViewContext<Self>,
838 ) -> Self {
839 Self::new(EditorMode::Full, buffer, project, None, cx)
840 }
841
842 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
843 let mut clone = Self::new(
844 self.mode,
845 self.buffer.clone(),
846 self.project.clone(),
847 self.get_field_editor_theme,
848 cx,
849 );
850 clone.scroll_position = self.scroll_position;
851 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
852 clone.searchable = self.searchable;
853 clone
854 }
855
856 fn new(
857 mode: EditorMode,
858 buffer: ModelHandle<MultiBuffer>,
859 project: Option<ModelHandle<Project>>,
860 get_field_editor_theme: Option<GetFieldEditorTheme>,
861 cx: &mut ViewContext<Self>,
862 ) -> Self {
863 let display_map = cx.add_model(|cx| {
864 let settings = cx.global::<Settings>();
865 let style = build_style(&*settings, get_field_editor_theme, None, cx);
866 DisplayMap::new(
867 buffer.clone(),
868 settings.tab_size,
869 style.text.font_id,
870 style.text.font_size,
871 None,
872 2,
873 1,
874 cx,
875 )
876 });
877 cx.observe(&buffer, Self::on_buffer_changed).detach();
878 cx.subscribe(&buffer, Self::on_buffer_event).detach();
879 cx.observe(&display_map, Self::on_display_map_changed)
880 .detach();
881
882 let mut this = Self {
883 handle: cx.weak_handle(),
884 buffer,
885 display_map,
886 selections: Arc::from([]),
887 pending_selection: Some(PendingSelection {
888 selection: Selection {
889 id: 0,
890 start: Anchor::min(),
891 end: Anchor::min(),
892 reversed: false,
893 goal: SelectionGoal::None,
894 },
895 mode: SelectMode::Character,
896 }),
897 columnar_selection_tail: None,
898 next_selection_id: 1,
899 add_selections_state: None,
900 select_next_state: None,
901 selection_history: Default::default(),
902 autoclose_stack: Default::default(),
903 snippet_stack: Default::default(),
904 select_larger_syntax_node_stack: Vec::new(),
905 active_diagnostics: None,
906 soft_wrap_mode_override: None,
907 get_field_editor_theme,
908 project,
909 scroll_position: Vector2F::zero(),
910 scroll_top_anchor: None,
911 autoscroll_request: None,
912 focused: false,
913 show_local_cursors: false,
914 show_local_selections: true,
915 blink_epoch: 0,
916 blinking_paused: false,
917 mode,
918 vertical_scroll_margin: 3.0,
919 placeholder_text: None,
920 highlighted_rows: None,
921 background_highlights: Default::default(),
922 nav_history: None,
923 context_menu: None,
924 completion_tasks: Default::default(),
925 next_completion_id: 0,
926 available_code_actions: Default::default(),
927 code_actions_task: Default::default(),
928 document_highlights_task: Default::default(),
929 pending_rename: Default::default(),
930 searchable: true,
931 override_text_style: None,
932 cursor_shape: Default::default(),
933 };
934 this.end_selection(cx);
935 this
936 }
937
938 pub fn open_new(
939 workspace: &mut Workspace,
940 _: &workspace::OpenNew,
941 cx: &mut ViewContext<Workspace>,
942 ) {
943 let project = workspace.project().clone();
944 if project.read(cx).is_remote() {
945 cx.propagate_action();
946 } else if let Some(buffer) = project
947 .update(cx, |project, cx| project.create_buffer(cx))
948 .log_err()
949 {
950 workspace.add_item(
951 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
952 cx,
953 );
954 }
955 }
956
957 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
958 self.buffer.read(cx).replica_id()
959 }
960
961 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
962 &self.buffer
963 }
964
965 pub fn title(&self, cx: &AppContext) -> String {
966 self.buffer().read(cx).title(cx)
967 }
968
969 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
970 EditorSnapshot {
971 mode: self.mode,
972 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
973 scroll_position: self.scroll_position,
974 scroll_top_anchor: self.scroll_top_anchor.clone(),
975 placeholder_text: self.placeholder_text.clone(),
976 is_focused: self
977 .handle
978 .upgrade(cx)
979 .map_or(false, |handle| handle.is_focused(cx)),
980 }
981 }
982
983 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
984 self.buffer.read(cx).language(cx)
985 }
986
987 fn style(&self, cx: &AppContext) -> EditorStyle {
988 build_style(
989 cx.global::<Settings>(),
990 self.get_field_editor_theme,
991 self.override_text_style.as_deref(),
992 cx,
993 )
994 }
995
996 pub fn set_placeholder_text(
997 &mut self,
998 placeholder_text: impl Into<Arc<str>>,
999 cx: &mut ViewContext<Self>,
1000 ) {
1001 self.placeholder_text = Some(placeholder_text.into());
1002 cx.notify();
1003 }
1004
1005 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1006 self.vertical_scroll_margin = margin_rows as f32;
1007 cx.notify();
1008 }
1009
1010 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1011 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1012
1013 if scroll_position.y() == 0. {
1014 self.scroll_top_anchor = None;
1015 self.scroll_position = scroll_position;
1016 } else {
1017 let scroll_top_buffer_offset =
1018 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1019 let anchor = map
1020 .buffer_snapshot
1021 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1022 self.scroll_position = vec2f(
1023 scroll_position.x(),
1024 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1025 );
1026 self.scroll_top_anchor = Some(anchor);
1027 }
1028
1029 cx.notify();
1030 }
1031
1032 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1033 self.cursor_shape = cursor_shape;
1034 cx.notify();
1035 }
1036
1037 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1038 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1039 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1040 }
1041
1042 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1043 if max < self.scroll_position.x() {
1044 self.scroll_position.set_x(max);
1045 true
1046 } else {
1047 false
1048 }
1049 }
1050
1051 pub fn autoscroll_vertically(
1052 &mut self,
1053 viewport_height: f32,
1054 line_height: f32,
1055 cx: &mut ViewContext<Self>,
1056 ) -> bool {
1057 let visible_lines = viewport_height / line_height;
1058 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1059 let mut scroll_position =
1060 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1061 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1062 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1063 } else {
1064 display_map.max_point().row().saturating_sub(1) as f32
1065 };
1066 if scroll_position.y() > max_scroll_top {
1067 scroll_position.set_y(max_scroll_top);
1068 self.set_scroll_position(scroll_position, cx);
1069 }
1070
1071 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1072 autoscroll
1073 } else {
1074 return false;
1075 };
1076
1077 let first_cursor_top;
1078 let last_cursor_bottom;
1079 if let Some(highlighted_rows) = &self.highlighted_rows {
1080 first_cursor_top = highlighted_rows.start as f32;
1081 last_cursor_bottom = first_cursor_top + 1.;
1082 } else if autoscroll == Autoscroll::Newest {
1083 let newest_selection =
1084 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1085 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1086 last_cursor_bottom = first_cursor_top + 1.;
1087 } else {
1088 let selections = self.local_selections::<Point>(cx);
1089 first_cursor_top = selections
1090 .first()
1091 .unwrap()
1092 .head()
1093 .to_display_point(&display_map)
1094 .row() as f32;
1095 last_cursor_bottom = selections
1096 .last()
1097 .unwrap()
1098 .head()
1099 .to_display_point(&display_map)
1100 .row() as f32
1101 + 1.0;
1102 }
1103
1104 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1105 0.
1106 } else {
1107 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1108 };
1109 if margin < 0.0 {
1110 return false;
1111 }
1112
1113 match autoscroll {
1114 Autoscroll::Fit | Autoscroll::Newest => {
1115 let margin = margin.min(self.vertical_scroll_margin);
1116 let target_top = (first_cursor_top - margin).max(0.0);
1117 let target_bottom = last_cursor_bottom + margin;
1118 let start_row = scroll_position.y();
1119 let end_row = start_row + visible_lines;
1120
1121 if target_top < start_row {
1122 scroll_position.set_y(target_top);
1123 self.set_scroll_position(scroll_position, cx);
1124 } else if target_bottom >= end_row {
1125 scroll_position.set_y(target_bottom - visible_lines);
1126 self.set_scroll_position(scroll_position, cx);
1127 }
1128 }
1129 Autoscroll::Center => {
1130 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1131 self.set_scroll_position(scroll_position, cx);
1132 }
1133 }
1134
1135 true
1136 }
1137
1138 pub fn autoscroll_horizontally(
1139 &mut self,
1140 start_row: u32,
1141 viewport_width: f32,
1142 scroll_width: f32,
1143 max_glyph_width: f32,
1144 layouts: &[text_layout::Line],
1145 cx: &mut ViewContext<Self>,
1146 ) -> bool {
1147 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1148 let selections = self.local_selections::<Point>(cx);
1149
1150 let mut target_left;
1151 let mut target_right;
1152
1153 if self.highlighted_rows.is_some() {
1154 target_left = 0.0_f32;
1155 target_right = 0.0_f32;
1156 } else {
1157 target_left = std::f32::INFINITY;
1158 target_right = 0.0_f32;
1159 for selection in selections {
1160 let head = selection.head().to_display_point(&display_map);
1161 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1162 let start_column = head.column().saturating_sub(3);
1163 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1164 target_left = target_left.min(
1165 layouts[(head.row() - start_row) as usize]
1166 .x_for_index(start_column as usize),
1167 );
1168 target_right = target_right.max(
1169 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1170 + max_glyph_width,
1171 );
1172 }
1173 }
1174 }
1175
1176 target_right = target_right.min(scroll_width);
1177
1178 if target_right - target_left > viewport_width {
1179 return false;
1180 }
1181
1182 let scroll_left = self.scroll_position.x() * max_glyph_width;
1183 let scroll_right = scroll_left + viewport_width;
1184
1185 if target_left < scroll_left {
1186 self.scroll_position.set_x(target_left / max_glyph_width);
1187 true
1188 } else if target_right > scroll_right {
1189 self.scroll_position
1190 .set_x((target_right - viewport_width) / max_glyph_width);
1191 true
1192 } else {
1193 false
1194 }
1195 }
1196
1197 pub fn move_selections(
1198 &mut self,
1199 cx: &mut ViewContext<Self>,
1200 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1201 ) {
1202 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1203 let selections = self
1204 .local_selections::<Point>(cx)
1205 .into_iter()
1206 .map(|selection| {
1207 let mut selection = Selection {
1208 id: selection.id,
1209 start: selection.start.to_display_point(&display_map),
1210 end: selection.end.to_display_point(&display_map),
1211 reversed: selection.reversed,
1212 goal: selection.goal,
1213 };
1214 move_selection(&display_map, &mut selection);
1215 Selection {
1216 id: selection.id,
1217 start: selection.start.to_point(&display_map),
1218 end: selection.end.to_point(&display_map),
1219 reversed: selection.reversed,
1220 goal: selection.goal,
1221 }
1222 })
1223 .collect();
1224 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1225 }
1226
1227 pub fn move_selection_heads(
1228 &mut self,
1229 cx: &mut ViewContext<Self>,
1230 update_head: impl Fn(
1231 &DisplaySnapshot,
1232 DisplayPoint,
1233 SelectionGoal,
1234 ) -> (DisplayPoint, SelectionGoal),
1235 ) {
1236 self.move_selections(cx, |map, selection| {
1237 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1238 selection.set_head(new_head, new_goal);
1239 });
1240 }
1241
1242 pub fn move_cursors(
1243 &mut self,
1244 cx: &mut ViewContext<Self>,
1245 update_cursor_position: impl Fn(
1246 &DisplaySnapshot,
1247 DisplayPoint,
1248 SelectionGoal,
1249 ) -> (DisplayPoint, SelectionGoal),
1250 ) {
1251 self.move_selections(cx, |map, selection| {
1252 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1253 selection.collapse_to(cursor, new_goal)
1254 });
1255 }
1256
1257 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1258 self.hide_context_menu(cx);
1259
1260 match phase {
1261 SelectPhase::Begin {
1262 position,
1263 add,
1264 click_count,
1265 } => self.begin_selection(*position, *add, *click_count, cx),
1266 SelectPhase::BeginColumnar {
1267 position,
1268 overshoot,
1269 } => self.begin_columnar_selection(*position, *overshoot, cx),
1270 SelectPhase::Extend {
1271 position,
1272 click_count,
1273 } => self.extend_selection(*position, *click_count, cx),
1274 SelectPhase::Update {
1275 position,
1276 overshoot,
1277 scroll_position,
1278 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1279 SelectPhase::End => self.end_selection(cx),
1280 }
1281 }
1282
1283 fn extend_selection(
1284 &mut self,
1285 position: DisplayPoint,
1286 click_count: usize,
1287 cx: &mut ViewContext<Self>,
1288 ) {
1289 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1290 let tail = self
1291 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1292 .tail();
1293 self.begin_selection(position, false, click_count, cx);
1294
1295 let position = position.to_offset(&display_map, Bias::Left);
1296 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1297 let mut pending = self.pending_selection.clone().unwrap();
1298
1299 if position >= tail {
1300 pending.selection.start = tail_anchor.clone();
1301 } else {
1302 pending.selection.end = tail_anchor.clone();
1303 pending.selection.reversed = true;
1304 }
1305
1306 match &mut pending.mode {
1307 SelectMode::Word(range) | SelectMode::Line(range) => {
1308 *range = tail_anchor.clone()..tail_anchor
1309 }
1310 _ => {}
1311 }
1312
1313 self.set_selections(self.selections.clone(), Some(pending), cx);
1314 }
1315
1316 fn begin_selection(
1317 &mut self,
1318 position: DisplayPoint,
1319 add: bool,
1320 click_count: usize,
1321 cx: &mut ViewContext<Self>,
1322 ) {
1323 if !self.focused {
1324 cx.focus_self();
1325 cx.emit(Event::Activate);
1326 }
1327
1328 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1329 let buffer = &display_map.buffer_snapshot;
1330 let newest_selection = self.newest_anchor_selection().clone();
1331
1332 let start;
1333 let end;
1334 let mode;
1335 match click_count {
1336 1 => {
1337 start = buffer.anchor_before(position.to_point(&display_map));
1338 end = start.clone();
1339 mode = SelectMode::Character;
1340 }
1341 2 => {
1342 let range = movement::surrounding_word(&display_map, position);
1343 start = buffer.anchor_before(range.start.to_point(&display_map));
1344 end = buffer.anchor_before(range.end.to_point(&display_map));
1345 mode = SelectMode::Word(start.clone()..end.clone());
1346 }
1347 3 => {
1348 let position = display_map
1349 .clip_point(position, Bias::Left)
1350 .to_point(&display_map);
1351 let line_start = display_map.prev_line_boundary(position).0;
1352 let next_line_start = buffer.clip_point(
1353 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1354 Bias::Left,
1355 );
1356 start = buffer.anchor_before(line_start);
1357 end = buffer.anchor_before(next_line_start);
1358 mode = SelectMode::Line(start.clone()..end.clone());
1359 }
1360 _ => {
1361 start = buffer.anchor_before(0);
1362 end = buffer.anchor_before(buffer.len());
1363 mode = SelectMode::All;
1364 }
1365 }
1366
1367 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1368
1369 let selection = Selection {
1370 id: post_inc(&mut self.next_selection_id),
1371 start,
1372 end,
1373 reversed: false,
1374 goal: SelectionGoal::None,
1375 };
1376
1377 let mut selections;
1378 if add {
1379 selections = self.selections.clone();
1380 // Remove the newest selection if it was added due to a previous mouse up
1381 // within this multi-click.
1382 if click_count > 1 {
1383 selections = self
1384 .selections
1385 .iter()
1386 .filter(|selection| selection.id != newest_selection.id)
1387 .cloned()
1388 .collect();
1389 }
1390 } else {
1391 selections = Arc::from([]);
1392 }
1393 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1394
1395 cx.notify();
1396 }
1397
1398 fn begin_columnar_selection(
1399 &mut self,
1400 position: DisplayPoint,
1401 overshoot: u32,
1402 cx: &mut ViewContext<Self>,
1403 ) {
1404 if !self.focused {
1405 cx.focus_self();
1406 cx.emit(Event::Activate);
1407 }
1408
1409 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1410 let tail = self
1411 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1412 .tail();
1413 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1414
1415 self.select_columns(
1416 tail.to_display_point(&display_map),
1417 position,
1418 overshoot,
1419 &display_map,
1420 cx,
1421 );
1422 }
1423
1424 fn update_selection(
1425 &mut self,
1426 position: DisplayPoint,
1427 overshoot: u32,
1428 scroll_position: Vector2F,
1429 cx: &mut ViewContext<Self>,
1430 ) {
1431 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1432
1433 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1434 let tail = tail.to_display_point(&display_map);
1435 self.select_columns(tail, position, overshoot, &display_map, cx);
1436 } else if let Some(mut pending) = self.pending_selection.clone() {
1437 let buffer = self.buffer.read(cx).snapshot(cx);
1438 let head;
1439 let tail;
1440 match &pending.mode {
1441 SelectMode::Character => {
1442 head = position.to_point(&display_map);
1443 tail = pending.selection.tail().to_point(&buffer);
1444 }
1445 SelectMode::Word(original_range) => {
1446 let original_display_range = original_range.start.to_display_point(&display_map)
1447 ..original_range.end.to_display_point(&display_map);
1448 let original_buffer_range = original_display_range.start.to_point(&display_map)
1449 ..original_display_range.end.to_point(&display_map);
1450 if movement::is_inside_word(&display_map, position)
1451 || original_display_range.contains(&position)
1452 {
1453 let word_range = movement::surrounding_word(&display_map, position);
1454 if word_range.start < original_display_range.start {
1455 head = word_range.start.to_point(&display_map);
1456 } else {
1457 head = word_range.end.to_point(&display_map);
1458 }
1459 } else {
1460 head = position.to_point(&display_map);
1461 }
1462
1463 if head <= original_buffer_range.start {
1464 tail = original_buffer_range.end;
1465 } else {
1466 tail = original_buffer_range.start;
1467 }
1468 }
1469 SelectMode::Line(original_range) => {
1470 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1471
1472 let position = display_map
1473 .clip_point(position, Bias::Left)
1474 .to_point(&display_map);
1475 let line_start = display_map.prev_line_boundary(position).0;
1476 let next_line_start = buffer.clip_point(
1477 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1478 Bias::Left,
1479 );
1480
1481 if line_start < original_range.start {
1482 head = line_start
1483 } else {
1484 head = next_line_start
1485 }
1486
1487 if head <= original_range.start {
1488 tail = original_range.end;
1489 } else {
1490 tail = original_range.start;
1491 }
1492 }
1493 SelectMode::All => {
1494 return;
1495 }
1496 };
1497
1498 if head < tail {
1499 pending.selection.start = buffer.anchor_before(head);
1500 pending.selection.end = buffer.anchor_before(tail);
1501 pending.selection.reversed = true;
1502 } else {
1503 pending.selection.start = buffer.anchor_before(tail);
1504 pending.selection.end = buffer.anchor_before(head);
1505 pending.selection.reversed = false;
1506 }
1507 self.set_selections(self.selections.clone(), Some(pending), cx);
1508 } else {
1509 log::error!("update_selection dispatched with no pending selection");
1510 return;
1511 }
1512
1513 self.set_scroll_position(scroll_position, cx);
1514 cx.notify();
1515 }
1516
1517 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1518 self.columnar_selection_tail.take();
1519 if self.pending_selection.is_some() {
1520 let selections = self.local_selections::<usize>(cx);
1521 self.update_selections(selections, None, cx);
1522 }
1523 }
1524
1525 fn select_columns(
1526 &mut self,
1527 tail: DisplayPoint,
1528 head: DisplayPoint,
1529 overshoot: u32,
1530 display_map: &DisplaySnapshot,
1531 cx: &mut ViewContext<Self>,
1532 ) {
1533 let start_row = cmp::min(tail.row(), head.row());
1534 let end_row = cmp::max(tail.row(), head.row());
1535 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1536 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1537 let reversed = start_column < tail.column();
1538
1539 let selections = (start_row..=end_row)
1540 .filter_map(|row| {
1541 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1542 let start = display_map
1543 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1544 .to_point(&display_map);
1545 let end = display_map
1546 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1547 .to_point(&display_map);
1548 Some(Selection {
1549 id: post_inc(&mut self.next_selection_id),
1550 start,
1551 end,
1552 reversed,
1553 goal: SelectionGoal::None,
1554 })
1555 } else {
1556 None
1557 }
1558 })
1559 .collect::<Vec<_>>();
1560
1561 self.update_selections(selections, None, cx);
1562 cx.notify();
1563 }
1564
1565 pub fn is_selecting(&self) -> bool {
1566 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1567 }
1568
1569 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1570 if self.take_rename(false, cx).is_some() {
1571 return;
1572 }
1573
1574 if self.hide_context_menu(cx).is_some() {
1575 return;
1576 }
1577
1578 if self.snippet_stack.pop().is_some() {
1579 return;
1580 }
1581
1582 if self.mode != EditorMode::Full {
1583 cx.propagate_action();
1584 return;
1585 }
1586
1587 if self.active_diagnostics.is_some() {
1588 self.dismiss_diagnostics(cx);
1589 } else if let Some(pending) = self.pending_selection.clone() {
1590 let mut selections = self.selections.clone();
1591 if selections.is_empty() {
1592 selections = Arc::from([pending.selection]);
1593 }
1594 self.set_selections(selections, None, cx);
1595 self.request_autoscroll(Autoscroll::Fit, cx);
1596 } else {
1597 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1598 if self.selection_count() == 1 {
1599 if oldest_selection.is_empty() {
1600 cx.propagate_action();
1601 return;
1602 }
1603
1604 oldest_selection.start = oldest_selection.head().clone();
1605 oldest_selection.end = oldest_selection.head().clone();
1606 }
1607 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1608 }
1609 }
1610
1611 #[cfg(any(test, feature = "test-support"))]
1612 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1613 &self,
1614 cx: &mut MutableAppContext,
1615 ) -> Vec<Range<D>> {
1616 self.local_selections::<D>(cx)
1617 .iter()
1618 .map(|s| {
1619 if s.reversed {
1620 s.end.clone()..s.start.clone()
1621 } else {
1622 s.start.clone()..s.end.clone()
1623 }
1624 })
1625 .collect()
1626 }
1627
1628 #[cfg(any(test, feature = "test-support"))]
1629 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1630 let display_map = self
1631 .display_map
1632 .update(cx, |display_map, cx| display_map.snapshot(cx));
1633 self.selections
1634 .iter()
1635 .chain(
1636 self.pending_selection
1637 .as_ref()
1638 .map(|pending| &pending.selection),
1639 )
1640 .map(|s| {
1641 if s.reversed {
1642 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1643 } else {
1644 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1645 }
1646 })
1647 .collect()
1648 }
1649
1650 pub fn select_ranges<I, T>(
1651 &mut self,
1652 ranges: I,
1653 autoscroll: Option<Autoscroll>,
1654 cx: &mut ViewContext<Self>,
1655 ) where
1656 I: IntoIterator<Item = Range<T>>,
1657 T: ToOffset,
1658 {
1659 let buffer = self.buffer.read(cx).snapshot(cx);
1660 let selections = ranges
1661 .into_iter()
1662 .map(|range| {
1663 let mut start = range.start.to_offset(&buffer);
1664 let mut end = range.end.to_offset(&buffer);
1665 let reversed = if start > end {
1666 mem::swap(&mut start, &mut end);
1667 true
1668 } else {
1669 false
1670 };
1671 Selection {
1672 id: post_inc(&mut self.next_selection_id),
1673 start,
1674 end,
1675 reversed,
1676 goal: SelectionGoal::None,
1677 }
1678 })
1679 .collect::<Vec<_>>();
1680 self.update_selections(selections, autoscroll, cx);
1681 }
1682
1683 #[cfg(any(test, feature = "test-support"))]
1684 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1685 where
1686 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1687 {
1688 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1689 let selections = ranges
1690 .into_iter()
1691 .map(|range| {
1692 let mut start = range.start;
1693 let mut end = range.end;
1694 let reversed = if start > end {
1695 mem::swap(&mut start, &mut end);
1696 true
1697 } else {
1698 false
1699 };
1700 Selection {
1701 id: post_inc(&mut self.next_selection_id),
1702 start: start.to_point(&display_map),
1703 end: end.to_point(&display_map),
1704 reversed,
1705 goal: SelectionGoal::None,
1706 }
1707 })
1708 .collect();
1709 self.update_selections(selections, None, cx);
1710 }
1711
1712 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1713 let text = action.0.as_ref();
1714 if !self.skip_autoclose_end(text, cx) {
1715 self.start_transaction(cx);
1716 if !self.surround_with_bracket_pair(text, cx) {
1717 self.insert(text, cx);
1718 self.autoclose_bracket_pairs(cx);
1719 }
1720 self.end_transaction(cx);
1721 self.trigger_completion_on_input(text, cx);
1722 }
1723 }
1724
1725 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1726 self.start_transaction(cx);
1727 let mut old_selections = SmallVec::<[_; 32]>::new();
1728 {
1729 let selections = self.local_selections::<usize>(cx);
1730 let buffer = self.buffer.read(cx).snapshot(cx);
1731 for selection in selections.iter() {
1732 let start_point = selection.start.to_point(&buffer);
1733 let indent = buffer
1734 .indent_column_for_line(start_point.row)
1735 .min(start_point.column);
1736 let start = selection.start;
1737 let end = selection.end;
1738
1739 let mut insert_extra_newline = false;
1740 if let Some(language) = buffer.language() {
1741 let leading_whitespace_len = buffer
1742 .reversed_chars_at(start)
1743 .take_while(|c| c.is_whitespace() && *c != '\n')
1744 .map(|c| c.len_utf8())
1745 .sum::<usize>();
1746
1747 let trailing_whitespace_len = buffer
1748 .chars_at(end)
1749 .take_while(|c| c.is_whitespace() && *c != '\n')
1750 .map(|c| c.len_utf8())
1751 .sum::<usize>();
1752
1753 insert_extra_newline = language.brackets().iter().any(|pair| {
1754 let pair_start = pair.start.trim_end();
1755 let pair_end = pair.end.trim_start();
1756
1757 pair.newline
1758 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1759 && buffer.contains_str_at(
1760 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1761 pair_start,
1762 )
1763 });
1764 }
1765
1766 old_selections.push((
1767 selection.id,
1768 buffer.anchor_after(end),
1769 start..end,
1770 indent,
1771 insert_extra_newline,
1772 ));
1773 }
1774 }
1775
1776 self.buffer.update(cx, |buffer, cx| {
1777 let mut delta = 0_isize;
1778 let mut pending_edit: Option<PendingEdit> = None;
1779 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1780 if pending_edit.as_ref().map_or(false, |pending| {
1781 pending.indent != *indent
1782 || pending.insert_extra_newline != *insert_extra_newline
1783 }) {
1784 let pending = pending_edit.take().unwrap();
1785 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1786 new_text.push('\n');
1787 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1788 if pending.insert_extra_newline {
1789 new_text = new_text.repeat(2);
1790 }
1791 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1792 delta += pending.delta;
1793 }
1794
1795 let start = (range.start as isize + delta) as usize;
1796 let end = (range.end as isize + delta) as usize;
1797 let mut text_len = *indent as usize + 1;
1798 if *insert_extra_newline {
1799 text_len *= 2;
1800 }
1801
1802 let pending = pending_edit.get_or_insert_with(Default::default);
1803 pending.delta += text_len as isize - (end - start) as isize;
1804 pending.indent = *indent;
1805 pending.insert_extra_newline = *insert_extra_newline;
1806 pending.ranges.push(start..end);
1807 }
1808
1809 let pending = pending_edit.unwrap();
1810 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1811 new_text.push('\n');
1812 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1813 if pending.insert_extra_newline {
1814 new_text = new_text.repeat(2);
1815 }
1816 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1817
1818 let buffer = buffer.read(cx);
1819 self.selections = self
1820 .selections
1821 .iter()
1822 .cloned()
1823 .zip(old_selections)
1824 .map(
1825 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1826 let mut cursor = end_anchor.to_point(&buffer);
1827 if insert_extra_newline {
1828 cursor.row -= 1;
1829 cursor.column = buffer.line_len(cursor.row);
1830 }
1831 let anchor = buffer.anchor_after(cursor);
1832 new_selection.start = anchor.clone();
1833 new_selection.end = anchor;
1834 new_selection
1835 },
1836 )
1837 .collect();
1838 });
1839
1840 self.request_autoscroll(Autoscroll::Fit, cx);
1841 self.end_transaction(cx);
1842
1843 #[derive(Default)]
1844 struct PendingEdit {
1845 indent: u32,
1846 insert_extra_newline: bool,
1847 delta: isize,
1848 ranges: SmallVec<[Range<usize>; 32]>,
1849 }
1850 }
1851
1852 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1853 self.start_transaction(cx);
1854
1855 let old_selections = self.local_selections::<usize>(cx);
1856 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1857 let anchors = {
1858 let snapshot = buffer.read(cx);
1859 old_selections
1860 .iter()
1861 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1862 .collect::<Vec<_>>()
1863 };
1864 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1865 buffer.edit_with_autoindent(edit_ranges, text, cx);
1866 anchors
1867 });
1868
1869 let selections = {
1870 let snapshot = self.buffer.read(cx).read(cx);
1871 selection_anchors
1872 .into_iter()
1873 .map(|(id, goal, position)| {
1874 let position = position.to_offset(&snapshot);
1875 Selection {
1876 id,
1877 start: position,
1878 end: position,
1879 goal,
1880 reversed: false,
1881 }
1882 })
1883 .collect()
1884 };
1885 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1886 self.end_transaction(cx);
1887 }
1888
1889 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1890 let selection = self.newest_anchor_selection();
1891 if self
1892 .buffer
1893 .read(cx)
1894 .is_completion_trigger(selection.head(), text, cx)
1895 {
1896 self.show_completions(&ShowCompletions, cx);
1897 } else {
1898 self.hide_context_menu(cx);
1899 }
1900 }
1901
1902 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1903 let snapshot = self.buffer.read(cx).snapshot(cx);
1904 if let Some(pair) = snapshot
1905 .language()
1906 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1907 .cloned()
1908 {
1909 if self
1910 .local_selections::<usize>(cx)
1911 .iter()
1912 .any(|selection| selection.is_empty())
1913 {
1914 false
1915 } else {
1916 let mut selections = self.selections.to_vec();
1917 for selection in &mut selections {
1918 selection.end = selection.end.bias_left(&snapshot);
1919 }
1920 drop(snapshot);
1921
1922 self.buffer.update(cx, |buffer, cx| {
1923 buffer.edit(
1924 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1925 &pair.start,
1926 cx,
1927 );
1928 buffer.edit(
1929 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1930 &pair.end,
1931 cx,
1932 );
1933 });
1934
1935 let snapshot = self.buffer.read(cx).read(cx);
1936 for selection in &mut selections {
1937 selection.end = selection.end.bias_right(&snapshot);
1938 }
1939 drop(snapshot);
1940
1941 self.set_selections(selections.into(), None, cx);
1942 true
1943 }
1944 } else {
1945 false
1946 }
1947 }
1948
1949 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1950 let selections = self.local_selections::<usize>(cx);
1951 let mut bracket_pair_state = None;
1952 let mut new_selections = None;
1953 self.buffer.update(cx, |buffer, cx| {
1954 let mut snapshot = buffer.snapshot(cx);
1955 let left_biased_selections = selections
1956 .iter()
1957 .map(|selection| Selection {
1958 id: selection.id,
1959 start: snapshot.anchor_before(selection.start),
1960 end: snapshot.anchor_before(selection.end),
1961 reversed: selection.reversed,
1962 goal: selection.goal,
1963 })
1964 .collect::<Vec<_>>();
1965
1966 let autoclose_pair = snapshot.language().and_then(|language| {
1967 let first_selection_start = selections.first().unwrap().start;
1968 let pair = language.brackets().iter().find(|pair| {
1969 snapshot.contains_str_at(
1970 first_selection_start.saturating_sub(pair.start.len()),
1971 &pair.start,
1972 )
1973 });
1974 pair.and_then(|pair| {
1975 let should_autoclose = selections.iter().all(|selection| {
1976 // Ensure all selections are parked at the end of a pair start.
1977 if snapshot.contains_str_at(
1978 selection.start.saturating_sub(pair.start.len()),
1979 &pair.start,
1980 ) {
1981 snapshot
1982 .chars_at(selection.start)
1983 .next()
1984 .map_or(true, |c| language.should_autoclose_before(c))
1985 } else {
1986 false
1987 }
1988 });
1989
1990 if should_autoclose {
1991 Some(pair.clone())
1992 } else {
1993 None
1994 }
1995 })
1996 });
1997
1998 if let Some(pair) = autoclose_pair {
1999 let selection_ranges = selections
2000 .iter()
2001 .map(|selection| {
2002 let start = selection.start.to_offset(&snapshot);
2003 start..start
2004 })
2005 .collect::<SmallVec<[_; 32]>>();
2006
2007 buffer.edit(selection_ranges, &pair.end, cx);
2008 snapshot = buffer.snapshot(cx);
2009
2010 new_selections = Some(
2011 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2012 .collect::<Vec<_>>(),
2013 );
2014
2015 if pair.end.len() == 1 {
2016 let mut delta = 0;
2017 bracket_pair_state = Some(BracketPairState {
2018 ranges: selections
2019 .iter()
2020 .map(move |selection| {
2021 let offset = selection.start + delta;
2022 delta += 1;
2023 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2024 })
2025 .collect(),
2026 pair,
2027 });
2028 }
2029 }
2030 });
2031
2032 if let Some(new_selections) = new_selections {
2033 self.update_selections(new_selections, None, cx);
2034 }
2035 if let Some(bracket_pair_state) = bracket_pair_state {
2036 self.autoclose_stack.push(bracket_pair_state);
2037 }
2038 }
2039
2040 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2041 let old_selections = self.local_selections::<usize>(cx);
2042 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2043 autoclose_pair
2044 } else {
2045 return false;
2046 };
2047 if text != autoclose_pair.pair.end {
2048 return false;
2049 }
2050
2051 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2052
2053 let buffer = self.buffer.read(cx).snapshot(cx);
2054 if old_selections
2055 .iter()
2056 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2057 .all(|(selection, autoclose_range)| {
2058 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2059 selection.is_empty() && selection.start == autoclose_range_end
2060 })
2061 {
2062 let new_selections = old_selections
2063 .into_iter()
2064 .map(|selection| {
2065 let cursor = selection.start + 1;
2066 Selection {
2067 id: selection.id,
2068 start: cursor,
2069 end: cursor,
2070 reversed: false,
2071 goal: SelectionGoal::None,
2072 }
2073 })
2074 .collect();
2075 self.autoclose_stack.pop();
2076 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2077 true
2078 } else {
2079 false
2080 }
2081 }
2082
2083 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2084 let offset = position.to_offset(buffer);
2085 let (word_range, kind) = buffer.surrounding_word(offset);
2086 if offset > word_range.start && kind == Some(CharKind::Word) {
2087 Some(
2088 buffer
2089 .text_for_range(word_range.start..offset)
2090 .collect::<String>(),
2091 )
2092 } else {
2093 None
2094 }
2095 }
2096
2097 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2098 if self.pending_rename.is_some() {
2099 return;
2100 }
2101
2102 let project = if let Some(project) = self.project.clone() {
2103 project
2104 } else {
2105 return;
2106 };
2107
2108 let position = self.newest_anchor_selection().head();
2109 let (buffer, buffer_position) = if let Some(output) = self
2110 .buffer
2111 .read(cx)
2112 .text_anchor_for_position(position.clone(), cx)
2113 {
2114 output
2115 } else {
2116 return;
2117 };
2118
2119 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2120 let completions = project.update(cx, |project, cx| {
2121 project.completions(&buffer, buffer_position.clone(), cx)
2122 });
2123
2124 let id = post_inc(&mut self.next_completion_id);
2125 let task = cx.spawn_weak(|this, mut cx| {
2126 async move {
2127 let completions = completions.await?;
2128 if completions.is_empty() {
2129 return Ok(());
2130 }
2131
2132 let mut menu = CompletionsMenu {
2133 id,
2134 initial_position: position,
2135 match_candidates: completions
2136 .iter()
2137 .enumerate()
2138 .map(|(id, completion)| {
2139 StringMatchCandidate::new(
2140 id,
2141 completion.label.text[completion.label.filter_range.clone()].into(),
2142 )
2143 })
2144 .collect(),
2145 buffer,
2146 completions: completions.into(),
2147 matches: Vec::new().into(),
2148 selected_item: 0,
2149 list: Default::default(),
2150 };
2151
2152 menu.filter(query.as_deref(), cx.background()).await;
2153
2154 if let Some(this) = this.upgrade(&cx) {
2155 this.update(&mut cx, |this, cx| {
2156 match this.context_menu.as_ref() {
2157 None => {}
2158 Some(ContextMenu::Completions(prev_menu)) => {
2159 if prev_menu.id > menu.id {
2160 return;
2161 }
2162 }
2163 _ => return,
2164 }
2165
2166 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2167 if this.focused {
2168 this.show_context_menu(ContextMenu::Completions(menu), cx);
2169 }
2170
2171 cx.notify();
2172 });
2173 }
2174 Ok::<_, anyhow::Error>(())
2175 }
2176 .log_err()
2177 });
2178 self.completion_tasks.push((id, task));
2179 }
2180
2181 pub fn confirm_completion(
2182 &mut self,
2183 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2184 cx: &mut ViewContext<Self>,
2185 ) -> Option<Task<Result<()>>> {
2186 use language::ToOffset as _;
2187
2188 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2189 menu
2190 } else {
2191 return None;
2192 };
2193
2194 let mat = completions_menu
2195 .matches
2196 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2197 let buffer_handle = completions_menu.buffer;
2198 let completion = completions_menu.completions.get(mat.candidate_id)?;
2199
2200 let snippet;
2201 let text;
2202 if completion.is_snippet() {
2203 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2204 text = snippet.as_ref().unwrap().text.clone();
2205 } else {
2206 snippet = None;
2207 text = completion.new_text.clone();
2208 };
2209 let buffer = buffer_handle.read(cx);
2210 let old_range = completion.old_range.to_offset(&buffer);
2211 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2212
2213 let selections = self.local_selections::<usize>(cx);
2214 let newest_selection = self.newest_anchor_selection();
2215 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2216 return None;
2217 }
2218
2219 let lookbehind = newest_selection
2220 .start
2221 .text_anchor
2222 .to_offset(buffer)
2223 .saturating_sub(old_range.start);
2224 let lookahead = old_range
2225 .end
2226 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2227 let mut common_prefix_len = old_text
2228 .bytes()
2229 .zip(text.bytes())
2230 .take_while(|(a, b)| a == b)
2231 .count();
2232
2233 let snapshot = self.buffer.read(cx).snapshot(cx);
2234 let mut ranges = Vec::new();
2235 for selection in &selections {
2236 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2237 let start = selection.start.saturating_sub(lookbehind);
2238 let end = selection.end + lookahead;
2239 ranges.push(start + common_prefix_len..end);
2240 } else {
2241 common_prefix_len = 0;
2242 ranges.clear();
2243 ranges.extend(selections.iter().map(|s| {
2244 if s.id == newest_selection.id {
2245 old_range.clone()
2246 } else {
2247 s.start..s.end
2248 }
2249 }));
2250 break;
2251 }
2252 }
2253 let text = &text[common_prefix_len..];
2254
2255 self.start_transaction(cx);
2256 if let Some(mut snippet) = snippet {
2257 snippet.text = text.to_string();
2258 for tabstop in snippet.tabstops.iter_mut().flatten() {
2259 tabstop.start -= common_prefix_len as isize;
2260 tabstop.end -= common_prefix_len as isize;
2261 }
2262
2263 self.insert_snippet(&ranges, snippet, cx).log_err();
2264 } else {
2265 self.buffer.update(cx, |buffer, cx| {
2266 buffer.edit_with_autoindent(ranges, text, cx);
2267 });
2268 }
2269 self.end_transaction(cx);
2270
2271 let project = self.project.clone()?;
2272 let apply_edits = project.update(cx, |project, cx| {
2273 project.apply_additional_edits_for_completion(
2274 buffer_handle,
2275 completion.clone(),
2276 true,
2277 cx,
2278 )
2279 });
2280 Some(cx.foreground().spawn(async move {
2281 apply_edits.await?;
2282 Ok(())
2283 }))
2284 }
2285
2286 pub fn toggle_code_actions(
2287 &mut self,
2288 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2289 cx: &mut ViewContext<Self>,
2290 ) {
2291 if matches!(
2292 self.context_menu.as_ref(),
2293 Some(ContextMenu::CodeActions(_))
2294 ) {
2295 self.context_menu.take();
2296 cx.notify();
2297 return;
2298 }
2299
2300 let mut task = self.code_actions_task.take();
2301 cx.spawn_weak(|this, mut cx| async move {
2302 while let Some(prev_task) = task {
2303 prev_task.await;
2304 task = this
2305 .upgrade(&cx)
2306 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2307 }
2308
2309 if let Some(this) = this.upgrade(&cx) {
2310 this.update(&mut cx, |this, cx| {
2311 if this.focused {
2312 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2313 this.show_context_menu(
2314 ContextMenu::CodeActions(CodeActionsMenu {
2315 buffer,
2316 actions,
2317 selected_item: Default::default(),
2318 list: Default::default(),
2319 deployed_from_indicator,
2320 }),
2321 cx,
2322 );
2323 }
2324 }
2325 })
2326 }
2327 Ok::<_, anyhow::Error>(())
2328 })
2329 .detach_and_log_err(cx);
2330 }
2331
2332 pub fn confirm_code_action(
2333 workspace: &mut Workspace,
2334 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2335 cx: &mut ViewContext<Workspace>,
2336 ) -> Option<Task<Result<()>>> {
2337 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2338 let actions_menu = if let ContextMenu::CodeActions(menu) =
2339 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2340 {
2341 menu
2342 } else {
2343 return None;
2344 };
2345 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2346 let action = actions_menu.actions.get(action_ix)?.clone();
2347 let title = action.lsp_action.title.clone();
2348 let buffer = actions_menu.buffer;
2349
2350 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2351 project.apply_code_action(buffer, action, true, cx)
2352 });
2353 Some(cx.spawn(|workspace, cx| async move {
2354 let project_transaction = apply_code_actions.await?;
2355 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2356 }))
2357 }
2358
2359 async fn open_project_transaction(
2360 this: ViewHandle<Editor>,
2361 workspace: ViewHandle<Workspace>,
2362 transaction: ProjectTransaction,
2363 title: String,
2364 mut cx: AsyncAppContext,
2365 ) -> Result<()> {
2366 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2367
2368 // If the code action's edits are all contained within this editor, then
2369 // avoid opening a new editor to display them.
2370 let mut entries = transaction.0.iter();
2371 if let Some((buffer, transaction)) = entries.next() {
2372 if entries.next().is_none() {
2373 let excerpt = this.read_with(&cx, |editor, cx| {
2374 editor
2375 .buffer()
2376 .read(cx)
2377 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2378 });
2379 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2380 if excerpted_buffer == *buffer {
2381 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2382 let excerpt_range = excerpt_range.to_offset(&snapshot);
2383 if snapshot
2384 .edited_ranges_for_transaction(transaction)
2385 .all(|range| {
2386 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2387 })
2388 {
2389 return Ok(());
2390 }
2391 }
2392 }
2393 }
2394 }
2395
2396 let mut ranges_to_highlight = Vec::new();
2397 let excerpt_buffer = cx.add_model(|cx| {
2398 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2399 for (buffer, transaction) in &transaction.0 {
2400 let snapshot = buffer.read(cx).snapshot();
2401 ranges_to_highlight.extend(
2402 multibuffer.push_excerpts_with_context_lines(
2403 buffer.clone(),
2404 snapshot
2405 .edited_ranges_for_transaction::<usize>(transaction)
2406 .collect(),
2407 1,
2408 cx,
2409 ),
2410 );
2411 }
2412 multibuffer.push_transaction(&transaction.0);
2413 multibuffer
2414 });
2415
2416 workspace.update(&mut cx, |workspace, cx| {
2417 let project = workspace.project().clone();
2418 let editor =
2419 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2420 workspace.add_item(Box::new(editor.clone()), cx);
2421 editor.update(cx, |editor, cx| {
2422 let color = editor.style(cx).highlighted_line_background;
2423 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2424 });
2425 });
2426
2427 Ok(())
2428 }
2429
2430 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2431 let project = self.project.as_ref()?;
2432 let buffer = self.buffer.read(cx);
2433 let newest_selection = self.newest_anchor_selection().clone();
2434 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2435 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2436 if start_buffer != end_buffer {
2437 return None;
2438 }
2439
2440 let actions = project.update(cx, |project, cx| {
2441 project.code_actions(&start_buffer, start..end, cx)
2442 });
2443 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2444 let actions = actions.await;
2445 if let Some(this) = this.upgrade(&cx) {
2446 this.update(&mut cx, |this, cx| {
2447 this.available_code_actions = actions.log_err().and_then(|actions| {
2448 if actions.is_empty() {
2449 None
2450 } else {
2451 Some((start_buffer, actions.into()))
2452 }
2453 });
2454 cx.notify();
2455 })
2456 }
2457 }));
2458 None
2459 }
2460
2461 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2462 if self.pending_rename.is_some() {
2463 return None;
2464 }
2465
2466 let project = self.project.as_ref()?;
2467 let buffer = self.buffer.read(cx);
2468 let newest_selection = self.newest_anchor_selection().clone();
2469 let cursor_position = newest_selection.head();
2470 let (cursor_buffer, cursor_buffer_position) =
2471 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2472 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2473 if cursor_buffer != tail_buffer {
2474 return None;
2475 }
2476
2477 let highlights = project.update(cx, |project, cx| {
2478 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2479 });
2480
2481 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2482 let highlights = highlights.log_err().await;
2483 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2484 this.update(&mut cx, |this, cx| {
2485 if this.pending_rename.is_some() {
2486 return;
2487 }
2488
2489 let buffer_id = cursor_position.buffer_id;
2490 let excerpt_id = cursor_position.excerpt_id.clone();
2491 let style = this.style(cx);
2492 let read_background = style.document_highlight_read_background;
2493 let write_background = style.document_highlight_write_background;
2494 let buffer = this.buffer.read(cx);
2495 if !buffer
2496 .text_anchor_for_position(cursor_position, cx)
2497 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2498 {
2499 return;
2500 }
2501
2502 let mut write_ranges = Vec::new();
2503 let mut read_ranges = Vec::new();
2504 for highlight in highlights {
2505 let range = Anchor {
2506 buffer_id,
2507 excerpt_id: excerpt_id.clone(),
2508 text_anchor: highlight.range.start,
2509 }..Anchor {
2510 buffer_id,
2511 excerpt_id: excerpt_id.clone(),
2512 text_anchor: highlight.range.end,
2513 };
2514 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2515 write_ranges.push(range);
2516 } else {
2517 read_ranges.push(range);
2518 }
2519 }
2520
2521 this.highlight_background::<DocumentHighlightRead>(
2522 read_ranges,
2523 read_background,
2524 cx,
2525 );
2526 this.highlight_background::<DocumentHighlightWrite>(
2527 write_ranges,
2528 write_background,
2529 cx,
2530 );
2531 cx.notify();
2532 });
2533 }
2534 }));
2535 None
2536 }
2537
2538 pub fn render_code_actions_indicator(
2539 &self,
2540 style: &EditorStyle,
2541 cx: &mut ViewContext<Self>,
2542 ) -> Option<ElementBox> {
2543 if self.available_code_actions.is_some() {
2544 enum Tag {}
2545 Some(
2546 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2547 Svg::new("icons/zap.svg")
2548 .with_color(style.code_actions_indicator)
2549 .boxed()
2550 })
2551 .with_cursor_style(CursorStyle::PointingHand)
2552 .with_padding(Padding::uniform(3.))
2553 .on_mouse_down(|cx| {
2554 cx.dispatch_action(ToggleCodeActions(true));
2555 })
2556 .boxed(),
2557 )
2558 } else {
2559 None
2560 }
2561 }
2562
2563 pub fn context_menu_visible(&self) -> bool {
2564 self.context_menu
2565 .as_ref()
2566 .map_or(false, |menu| menu.visible())
2567 }
2568
2569 pub fn render_context_menu(
2570 &self,
2571 cursor_position: DisplayPoint,
2572 style: EditorStyle,
2573 cx: &AppContext,
2574 ) -> Option<(DisplayPoint, ElementBox)> {
2575 self.context_menu
2576 .as_ref()
2577 .map(|menu| menu.render(cursor_position, style, cx))
2578 }
2579
2580 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2581 if !matches!(menu, ContextMenu::Completions(_)) {
2582 self.completion_tasks.clear();
2583 }
2584 self.context_menu = Some(menu);
2585 cx.notify();
2586 }
2587
2588 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2589 cx.notify();
2590 self.completion_tasks.clear();
2591 self.context_menu.take()
2592 }
2593
2594 pub fn insert_snippet(
2595 &mut self,
2596 insertion_ranges: &[Range<usize>],
2597 snippet: Snippet,
2598 cx: &mut ViewContext<Self>,
2599 ) -> Result<()> {
2600 let tabstops = self.buffer.update(cx, |buffer, cx| {
2601 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2602
2603 let snapshot = &*buffer.read(cx);
2604 let snippet = &snippet;
2605 snippet
2606 .tabstops
2607 .iter()
2608 .map(|tabstop| {
2609 let mut tabstop_ranges = tabstop
2610 .iter()
2611 .flat_map(|tabstop_range| {
2612 let mut delta = 0 as isize;
2613 insertion_ranges.iter().map(move |insertion_range| {
2614 let insertion_start = insertion_range.start as isize + delta;
2615 delta +=
2616 snippet.text.len() as isize - insertion_range.len() as isize;
2617
2618 let start = snapshot.anchor_before(
2619 (insertion_start + tabstop_range.start) as usize,
2620 );
2621 let end = snapshot
2622 .anchor_after((insertion_start + tabstop_range.end) as usize);
2623 start..end
2624 })
2625 })
2626 .collect::<Vec<_>>();
2627 tabstop_ranges
2628 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2629 tabstop_ranges
2630 })
2631 .collect::<Vec<_>>()
2632 });
2633
2634 if let Some(tabstop) = tabstops.first() {
2635 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2636 self.snippet_stack.push(SnippetState {
2637 active_index: 0,
2638 ranges: tabstops,
2639 });
2640 }
2641
2642 Ok(())
2643 }
2644
2645 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2646 self.move_to_snippet_tabstop(Bias::Right, cx)
2647 }
2648
2649 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2650 self.move_to_snippet_tabstop(Bias::Left, cx);
2651 }
2652
2653 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2654 let buffer = self.buffer.read(cx).snapshot(cx);
2655
2656 if let Some(snippet) = self.snippet_stack.last_mut() {
2657 match bias {
2658 Bias::Left => {
2659 if snippet.active_index > 0 {
2660 snippet.active_index -= 1;
2661 } else {
2662 return false;
2663 }
2664 }
2665 Bias::Right => {
2666 if snippet.active_index + 1 < snippet.ranges.len() {
2667 snippet.active_index += 1;
2668 } else {
2669 return false;
2670 }
2671 }
2672 }
2673 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2674 let new_selections = current_ranges
2675 .iter()
2676 .map(|new_range| {
2677 let new_range = new_range.to_offset(&buffer);
2678 Selection {
2679 id: post_inc(&mut self.next_selection_id),
2680 start: new_range.start,
2681 end: new_range.end,
2682 reversed: false,
2683 goal: SelectionGoal::None,
2684 }
2685 })
2686 .collect();
2687
2688 // Remove the snippet state when moving to the last tabstop.
2689 if snippet.active_index + 1 == snippet.ranges.len() {
2690 self.snippet_stack.pop();
2691 }
2692
2693 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2694 return true;
2695 }
2696 self.snippet_stack.pop();
2697 }
2698
2699 false
2700 }
2701
2702 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2703 self.start_transaction(cx);
2704 self.select_all(&SelectAll, cx);
2705 self.insert("", cx);
2706 self.end_transaction(cx);
2707 }
2708
2709 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2710 self.start_transaction(cx);
2711 let mut selections = self.local_selections::<Point>(cx);
2712 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2713 for selection in &mut selections {
2714 if selection.is_empty() {
2715 let old_head = selection.head();
2716 let mut new_head =
2717 movement::left(&display_map, old_head.to_display_point(&display_map))
2718 .to_point(&display_map);
2719 if let Some((buffer, line_buffer_range)) = display_map
2720 .buffer_snapshot
2721 .buffer_line_for_row(old_head.row)
2722 {
2723 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2724 if old_head.column <= indent_column && old_head.column > 0 {
2725 let indent = buffer.indent_size();
2726 new_head = cmp::min(
2727 new_head,
2728 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2729 );
2730 }
2731 }
2732
2733 selection.set_head(new_head, SelectionGoal::None);
2734 }
2735 }
2736 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2737 self.insert("", cx);
2738 self.end_transaction(cx);
2739 }
2740
2741 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2742 self.transact(cx, |this, cx| {
2743 this.move_selections(cx, |map, selection| {
2744 if selection.is_empty() {
2745 let cursor = movement::right(map, selection.head());
2746 selection.set_head(cursor, SelectionGoal::None);
2747 }
2748 });
2749 this.insert(&"", cx);
2750 });
2751 }
2752
2753 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2754 if self.move_to_next_snippet_tabstop(cx) {
2755 return;
2756 }
2757
2758 self.start_transaction(cx);
2759 let tab_size = cx.global::<Settings>().tab_size;
2760 let mut selections = self.local_selections::<Point>(cx);
2761 let mut last_indent = None;
2762 self.buffer.update(cx, |buffer, cx| {
2763 for selection in &mut selections {
2764 if selection.is_empty() {
2765 let char_column = buffer
2766 .read(cx)
2767 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2768 .flat_map(str::chars)
2769 .count();
2770 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2771 buffer.edit(
2772 [selection.start..selection.start],
2773 " ".repeat(chars_to_next_tab_stop),
2774 cx,
2775 );
2776 selection.start.column += chars_to_next_tab_stop as u32;
2777 selection.end = selection.start;
2778 } else {
2779 let mut start_row = selection.start.row;
2780 let mut end_row = selection.end.row + 1;
2781
2782 // If a selection ends at the beginning of a line, don't indent
2783 // that last line.
2784 if selection.end.column == 0 {
2785 end_row -= 1;
2786 }
2787
2788 // Avoid re-indenting a row that has already been indented by a
2789 // previous selection, but still update this selection's column
2790 // to reflect that indentation.
2791 if let Some((last_indent_row, last_indent_len)) = last_indent {
2792 if last_indent_row == selection.start.row {
2793 selection.start.column += last_indent_len;
2794 start_row += 1;
2795 }
2796 if last_indent_row == selection.end.row {
2797 selection.end.column += last_indent_len;
2798 }
2799 }
2800
2801 for row in start_row..end_row {
2802 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2803 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2804 let row_start = Point::new(row, 0);
2805 buffer.edit(
2806 [row_start..row_start],
2807 " ".repeat(columns_to_next_tab_stop),
2808 cx,
2809 );
2810
2811 // Update this selection's endpoints to reflect the indentation.
2812 if row == selection.start.row {
2813 selection.start.column += columns_to_next_tab_stop as u32;
2814 }
2815 if row == selection.end.row {
2816 selection.end.column += columns_to_next_tab_stop as u32;
2817 }
2818
2819 last_indent = Some((row, columns_to_next_tab_stop as u32));
2820 }
2821 }
2822 }
2823 });
2824
2825 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2826 self.end_transaction(cx);
2827 }
2828
2829 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2830 if !self.snippet_stack.is_empty() {
2831 self.move_to_prev_snippet_tabstop(cx);
2832 return;
2833 }
2834
2835 self.start_transaction(cx);
2836 let tab_size = cx.global::<Settings>().tab_size;
2837 let selections = self.local_selections::<Point>(cx);
2838 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2839 let mut deletion_ranges = Vec::new();
2840 let mut last_outdent = None;
2841 {
2842 let buffer = self.buffer.read(cx).read(cx);
2843 for selection in &selections {
2844 let mut rows = selection.spanned_rows(false, &display_map);
2845
2846 // Avoid re-outdenting a row that has already been outdented by a
2847 // previous selection.
2848 if let Some(last_row) = last_outdent {
2849 if last_row == rows.start {
2850 rows.start += 1;
2851 }
2852 }
2853
2854 for row in rows {
2855 let column = buffer.indent_column_for_line(row) as usize;
2856 if column > 0 {
2857 let mut deletion_len = (column % tab_size) as u32;
2858 if deletion_len == 0 {
2859 deletion_len = tab_size as u32;
2860 }
2861 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2862 last_outdent = Some(row);
2863 }
2864 }
2865 }
2866 }
2867 self.buffer.update(cx, |buffer, cx| {
2868 buffer.edit(deletion_ranges, "", cx);
2869 });
2870
2871 self.update_selections(
2872 self.local_selections::<usize>(cx),
2873 Some(Autoscroll::Fit),
2874 cx,
2875 );
2876 self.end_transaction(cx);
2877 }
2878
2879 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2880 self.start_transaction(cx);
2881
2882 let selections = self.local_selections::<Point>(cx);
2883 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2884 let buffer = self.buffer.read(cx).snapshot(cx);
2885
2886 let mut new_cursors = Vec::new();
2887 let mut edit_ranges = Vec::new();
2888 let mut selections = selections.iter().peekable();
2889 while let Some(selection) = selections.next() {
2890 let mut rows = selection.spanned_rows(false, &display_map);
2891 let goal_display_column = selection.head().to_display_point(&display_map).column();
2892
2893 // Accumulate contiguous regions of rows that we want to delete.
2894 while let Some(next_selection) = selections.peek() {
2895 let next_rows = next_selection.spanned_rows(false, &display_map);
2896 if next_rows.start <= rows.end {
2897 rows.end = next_rows.end;
2898 selections.next().unwrap();
2899 } else {
2900 break;
2901 }
2902 }
2903
2904 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2905 let edit_end;
2906 let cursor_buffer_row;
2907 if buffer.max_point().row >= rows.end {
2908 // If there's a line after the range, delete the \n from the end of the row range
2909 // and position the cursor on the next line.
2910 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2911 cursor_buffer_row = rows.end;
2912 } else {
2913 // If there isn't a line after the range, delete the \n from the line before the
2914 // start of the row range and position the cursor there.
2915 edit_start = edit_start.saturating_sub(1);
2916 edit_end = buffer.len();
2917 cursor_buffer_row = rows.start.saturating_sub(1);
2918 }
2919
2920 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2921 *cursor.column_mut() =
2922 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2923
2924 new_cursors.push((
2925 selection.id,
2926 buffer.anchor_after(cursor.to_point(&display_map)),
2927 ));
2928 edit_ranges.push(edit_start..edit_end);
2929 }
2930
2931 let buffer = self.buffer.update(cx, |buffer, cx| {
2932 buffer.edit(edit_ranges, "", cx);
2933 buffer.snapshot(cx)
2934 });
2935 let new_selections = new_cursors
2936 .into_iter()
2937 .map(|(id, cursor)| {
2938 let cursor = cursor.to_point(&buffer);
2939 Selection {
2940 id,
2941 start: cursor,
2942 end: cursor,
2943 reversed: false,
2944 goal: SelectionGoal::None,
2945 }
2946 })
2947 .collect();
2948 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2949 self.end_transaction(cx);
2950 }
2951
2952 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2953 self.start_transaction(cx);
2954
2955 let selections = self.local_selections::<Point>(cx);
2956 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2957 let buffer = &display_map.buffer_snapshot;
2958
2959 let mut edits = Vec::new();
2960 let mut selections_iter = selections.iter().peekable();
2961 while let Some(selection) = selections_iter.next() {
2962 // Avoid duplicating the same lines twice.
2963 let mut rows = selection.spanned_rows(false, &display_map);
2964
2965 while let Some(next_selection) = selections_iter.peek() {
2966 let next_rows = next_selection.spanned_rows(false, &display_map);
2967 if next_rows.start <= rows.end - 1 {
2968 rows.end = next_rows.end;
2969 selections_iter.next().unwrap();
2970 } else {
2971 break;
2972 }
2973 }
2974
2975 // Copy the text from the selected row region and splice it at the start of the region.
2976 let start = Point::new(rows.start, 0);
2977 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2978 let text = buffer
2979 .text_for_range(start..end)
2980 .chain(Some("\n"))
2981 .collect::<String>();
2982 edits.push((start, text, rows.len() as u32));
2983 }
2984
2985 self.buffer.update(cx, |buffer, cx| {
2986 for (point, text, _) in edits.into_iter().rev() {
2987 buffer.edit(Some(point..point), text, cx);
2988 }
2989 });
2990
2991 self.request_autoscroll(Autoscroll::Fit, cx);
2992 self.end_transaction(cx);
2993 }
2994
2995 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2996 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2997 let buffer = self.buffer.read(cx).snapshot(cx);
2998
2999 let mut edits = Vec::new();
3000 let mut unfold_ranges = Vec::new();
3001 let mut refold_ranges = Vec::new();
3002
3003 let selections = self.local_selections::<Point>(cx);
3004 let mut selections = selections.iter().peekable();
3005 let mut contiguous_row_selections = Vec::new();
3006 let mut new_selections = Vec::new();
3007
3008 while let Some(selection) = selections.next() {
3009 // Find all the selections that span a contiguous row range
3010 contiguous_row_selections.push(selection.clone());
3011 let start_row = selection.start.row;
3012 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3013 display_map.next_line_boundary(selection.end).0.row + 1
3014 } else {
3015 selection.end.row
3016 };
3017
3018 while let Some(next_selection) = selections.peek() {
3019 if next_selection.start.row <= end_row {
3020 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3021 display_map.next_line_boundary(next_selection.end).0.row + 1
3022 } else {
3023 next_selection.end.row
3024 };
3025 contiguous_row_selections.push(selections.next().unwrap().clone());
3026 } else {
3027 break;
3028 }
3029 }
3030
3031 // Move the text spanned by the row range to be before the line preceding the row range
3032 if start_row > 0 {
3033 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3034 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3035 let insertion_point = display_map
3036 .prev_line_boundary(Point::new(start_row - 1, 0))
3037 .0;
3038
3039 // Don't move lines across excerpts
3040 if buffer
3041 .excerpt_boundaries_in_range((
3042 Bound::Excluded(insertion_point),
3043 Bound::Included(range_to_move.end),
3044 ))
3045 .next()
3046 .is_none()
3047 {
3048 let text = buffer
3049 .text_for_range(range_to_move.clone())
3050 .flat_map(|s| s.chars())
3051 .skip(1)
3052 .chain(['\n'])
3053 .collect::<String>();
3054
3055 edits.push((
3056 buffer.anchor_after(range_to_move.start)
3057 ..buffer.anchor_before(range_to_move.end),
3058 String::new(),
3059 ));
3060 let insertion_anchor = buffer.anchor_after(insertion_point);
3061 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3062
3063 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3064
3065 // Move selections up
3066 new_selections.extend(contiguous_row_selections.drain(..).map(
3067 |mut selection| {
3068 selection.start.row -= row_delta;
3069 selection.end.row -= row_delta;
3070 selection
3071 },
3072 ));
3073
3074 // Move folds up
3075 unfold_ranges.push(range_to_move.clone());
3076 for fold in display_map.folds_in_range(
3077 buffer.anchor_before(range_to_move.start)
3078 ..buffer.anchor_after(range_to_move.end),
3079 ) {
3080 let mut start = fold.start.to_point(&buffer);
3081 let mut end = fold.end.to_point(&buffer);
3082 start.row -= row_delta;
3083 end.row -= row_delta;
3084 refold_ranges.push(start..end);
3085 }
3086 }
3087 }
3088
3089 // If we didn't move line(s), preserve the existing selections
3090 new_selections.extend(contiguous_row_selections.drain(..));
3091 }
3092
3093 self.start_transaction(cx);
3094 self.unfold_ranges(unfold_ranges, cx);
3095 self.buffer.update(cx, |buffer, cx| {
3096 for (range, text) in edits {
3097 buffer.edit([range], text, cx);
3098 }
3099 });
3100 self.fold_ranges(refold_ranges, cx);
3101 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3102 self.end_transaction(cx);
3103 }
3104
3105 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3106 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3107 let buffer = self.buffer.read(cx).snapshot(cx);
3108
3109 let mut edits = Vec::new();
3110 let mut unfold_ranges = Vec::new();
3111 let mut refold_ranges = Vec::new();
3112
3113 let selections = self.local_selections::<Point>(cx);
3114 let mut selections = selections.iter().peekable();
3115 let mut contiguous_row_selections = Vec::new();
3116 let mut new_selections = Vec::new();
3117
3118 while let Some(selection) = selections.next() {
3119 // Find all the selections that span a contiguous row range
3120 contiguous_row_selections.push(selection.clone());
3121 let start_row = selection.start.row;
3122 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3123 display_map.next_line_boundary(selection.end).0.row + 1
3124 } else {
3125 selection.end.row
3126 };
3127
3128 while let Some(next_selection) = selections.peek() {
3129 if next_selection.start.row <= end_row {
3130 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3131 display_map.next_line_boundary(next_selection.end).0.row + 1
3132 } else {
3133 next_selection.end.row
3134 };
3135 contiguous_row_selections.push(selections.next().unwrap().clone());
3136 } else {
3137 break;
3138 }
3139 }
3140
3141 // Move the text spanned by the row range to be after the last line of the row range
3142 if end_row <= buffer.max_point().row {
3143 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3144 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3145
3146 // Don't move lines across excerpt boundaries
3147 if buffer
3148 .excerpt_boundaries_in_range((
3149 Bound::Excluded(range_to_move.start),
3150 Bound::Included(insertion_point),
3151 ))
3152 .next()
3153 .is_none()
3154 {
3155 let mut text = String::from("\n");
3156 text.extend(buffer.text_for_range(range_to_move.clone()));
3157 text.pop(); // Drop trailing newline
3158 edits.push((
3159 buffer.anchor_after(range_to_move.start)
3160 ..buffer.anchor_before(range_to_move.end),
3161 String::new(),
3162 ));
3163 let insertion_anchor = buffer.anchor_after(insertion_point);
3164 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3165
3166 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3167
3168 // Move selections down
3169 new_selections.extend(contiguous_row_selections.drain(..).map(
3170 |mut selection| {
3171 selection.start.row += row_delta;
3172 selection.end.row += row_delta;
3173 selection
3174 },
3175 ));
3176
3177 // Move folds down
3178 unfold_ranges.push(range_to_move.clone());
3179 for fold in display_map.folds_in_range(
3180 buffer.anchor_before(range_to_move.start)
3181 ..buffer.anchor_after(range_to_move.end),
3182 ) {
3183 let mut start = fold.start.to_point(&buffer);
3184 let mut end = fold.end.to_point(&buffer);
3185 start.row += row_delta;
3186 end.row += row_delta;
3187 refold_ranges.push(start..end);
3188 }
3189 }
3190 }
3191
3192 // If we didn't move line(s), preserve the existing selections
3193 new_selections.extend(contiguous_row_selections.drain(..));
3194 }
3195
3196 self.start_transaction(cx);
3197 self.unfold_ranges(unfold_ranges, cx);
3198 self.buffer.update(cx, |buffer, cx| {
3199 for (range, text) in edits {
3200 buffer.edit([range], text, cx);
3201 }
3202 });
3203 self.fold_ranges(refold_ranges, cx);
3204 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3205 self.end_transaction(cx);
3206 }
3207
3208 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3209 self.start_transaction(cx);
3210 let mut text = String::new();
3211 let mut selections = self.local_selections::<Point>(cx);
3212 let mut clipboard_selections = Vec::with_capacity(selections.len());
3213 {
3214 let buffer = self.buffer.read(cx).read(cx);
3215 let max_point = buffer.max_point();
3216 for selection in &mut selections {
3217 let is_entire_line = selection.is_empty();
3218 if is_entire_line {
3219 selection.start = Point::new(selection.start.row, 0);
3220 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3221 selection.goal = SelectionGoal::None;
3222 }
3223 let mut len = 0;
3224 for chunk in buffer.text_for_range(selection.start..selection.end) {
3225 text.push_str(chunk);
3226 len += chunk.len();
3227 }
3228 clipboard_selections.push(ClipboardSelection {
3229 len,
3230 is_entire_line,
3231 });
3232 }
3233 }
3234 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3235 self.insert("", cx);
3236 self.end_transaction(cx);
3237
3238 cx.as_mut()
3239 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3240 }
3241
3242 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3243 let selections = self.local_selections::<Point>(cx);
3244 let mut text = String::new();
3245 let mut clipboard_selections = Vec::with_capacity(selections.len());
3246 {
3247 let buffer = self.buffer.read(cx).read(cx);
3248 let max_point = buffer.max_point();
3249 for selection in selections.iter() {
3250 let mut start = selection.start;
3251 let mut end = selection.end;
3252 let is_entire_line = selection.is_empty();
3253 if is_entire_line {
3254 start = Point::new(start.row, 0);
3255 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3256 }
3257 let mut len = 0;
3258 for chunk in buffer.text_for_range(start..end) {
3259 text.push_str(chunk);
3260 len += chunk.len();
3261 }
3262 clipboard_selections.push(ClipboardSelection {
3263 len,
3264 is_entire_line,
3265 });
3266 }
3267 }
3268
3269 cx.as_mut()
3270 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3271 }
3272
3273 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3274 if let Some(item) = cx.as_mut().read_from_clipboard() {
3275 let clipboard_text = item.text();
3276 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3277 let mut selections = self.local_selections::<usize>(cx);
3278 let all_selections_were_entire_line =
3279 clipboard_selections.iter().all(|s| s.is_entire_line);
3280 if clipboard_selections.len() != selections.len() {
3281 clipboard_selections.clear();
3282 }
3283
3284 let mut delta = 0_isize;
3285 let mut start_offset = 0;
3286 for (i, selection) in selections.iter_mut().enumerate() {
3287 let to_insert;
3288 let entire_line;
3289 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3290 let end_offset = start_offset + clipboard_selection.len;
3291 to_insert = &clipboard_text[start_offset..end_offset];
3292 entire_line = clipboard_selection.is_entire_line;
3293 start_offset = end_offset
3294 } else {
3295 to_insert = clipboard_text.as_str();
3296 entire_line = all_selections_were_entire_line;
3297 }
3298
3299 selection.start = (selection.start as isize + delta) as usize;
3300 selection.end = (selection.end as isize + delta) as usize;
3301
3302 self.buffer.update(cx, |buffer, cx| {
3303 // If the corresponding selection was empty when this slice of the
3304 // clipboard text was written, then the entire line containing the
3305 // selection was copied. If this selection is also currently empty,
3306 // then paste the line before the current line of the buffer.
3307 let range = if selection.is_empty() && entire_line {
3308 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3309 let line_start = selection.start - column;
3310 line_start..line_start
3311 } else {
3312 selection.start..selection.end
3313 };
3314
3315 delta += to_insert.len() as isize - range.len() as isize;
3316 buffer.edit([range], to_insert, cx);
3317 selection.start += to_insert.len();
3318 selection.end = selection.start;
3319 });
3320 }
3321 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3322 } else {
3323 self.insert(clipboard_text, cx);
3324 }
3325 }
3326 }
3327
3328 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3329 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3330 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3331 self.set_selections(selections, None, cx);
3332 }
3333 self.request_autoscroll(Autoscroll::Fit, cx);
3334 }
3335 }
3336
3337 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3338 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3339 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3340 self.set_selections(selections, None, cx);
3341 }
3342 self.request_autoscroll(Autoscroll::Fit, cx);
3343 }
3344 }
3345
3346 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3347 self.buffer
3348 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3349 }
3350
3351 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3352 self.move_selections(cx, |map, selection| {
3353 let cursor = if selection.is_empty() {
3354 movement::left(map, selection.start)
3355 } else {
3356 selection.start
3357 };
3358 selection.collapse_to(cursor, SelectionGoal::None);
3359 });
3360 }
3361
3362 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3363 self.move_selection_heads(cx, |map, head, _| {
3364 (movement::left(map, head), SelectionGoal::None)
3365 });
3366 }
3367
3368 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3369 self.move_selections(cx, |map, selection| {
3370 let cursor = if selection.is_empty() {
3371 movement::right(map, selection.end)
3372 } else {
3373 selection.end
3374 };
3375 selection.collapse_to(cursor, SelectionGoal::None)
3376 });
3377 }
3378
3379 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3380 self.move_selection_heads(cx, |map, head, _| {
3381 (movement::right(map, head), SelectionGoal::None)
3382 });
3383 }
3384
3385 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3386 if self.take_rename(true, cx).is_some() {
3387 return;
3388 }
3389
3390 if let Some(context_menu) = self.context_menu.as_mut() {
3391 if context_menu.select_prev(cx) {
3392 return;
3393 }
3394 }
3395
3396 if matches!(self.mode, EditorMode::SingleLine) {
3397 cx.propagate_action();
3398 return;
3399 }
3400
3401 self.move_selections(cx, |map, selection| {
3402 if !selection.is_empty() {
3403 selection.goal = SelectionGoal::None;
3404 }
3405 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3406 selection.collapse_to(cursor, goal);
3407 });
3408 }
3409
3410 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3411 self.move_selection_heads(cx, movement::up)
3412 }
3413
3414 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3415 self.take_rename(true, cx);
3416
3417 if let Some(context_menu) = self.context_menu.as_mut() {
3418 if context_menu.select_next(cx) {
3419 return;
3420 }
3421 }
3422
3423 if matches!(self.mode, EditorMode::SingleLine) {
3424 cx.propagate_action();
3425 return;
3426 }
3427
3428 self.move_selections(cx, |map, selection| {
3429 if !selection.is_empty() {
3430 selection.goal = SelectionGoal::None;
3431 }
3432 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3433 selection.collapse_to(cursor, goal);
3434 });
3435 }
3436
3437 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3438 self.move_selection_heads(cx, movement::down)
3439 }
3440
3441 pub fn move_to_previous_word_start(
3442 &mut self,
3443 _: &MoveToPreviousWordStart,
3444 cx: &mut ViewContext<Self>,
3445 ) {
3446 self.move_cursors(cx, |map, head, _| {
3447 (
3448 movement::previous_word_start(map, head),
3449 SelectionGoal::None,
3450 )
3451 });
3452 }
3453
3454 pub fn select_to_previous_word_start(
3455 &mut self,
3456 _: &SelectToPreviousWordBoundary,
3457 cx: &mut ViewContext<Self>,
3458 ) {
3459 self.move_selection_heads(cx, |map, head, _| {
3460 (
3461 movement::previous_word_start(map, head),
3462 SelectionGoal::None,
3463 )
3464 });
3465 }
3466
3467 pub fn delete_to_previous_word_start(
3468 &mut self,
3469 _: &DeleteToPreviousWordBoundary,
3470 cx: &mut ViewContext<Self>,
3471 ) {
3472 self.transact(cx, |this, cx| {
3473 this.move_selections(cx, |map, selection| {
3474 if selection.is_empty() {
3475 let cursor = movement::previous_word_start(map, selection.head());
3476 selection.set_head(cursor, SelectionGoal::None);
3477 }
3478 });
3479 this.insert("", cx);
3480 });
3481 }
3482
3483 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3484 self.move_cursors(cx, |map, head, _| {
3485 (movement::next_word_end(map, head), SelectionGoal::None)
3486 });
3487 }
3488
3489 pub fn select_to_next_word_end(
3490 &mut self,
3491 _: &SelectToNextWordBoundary,
3492 cx: &mut ViewContext<Self>,
3493 ) {
3494 self.move_selection_heads(cx, |map, head, _| {
3495 (movement::next_word_end(map, head), SelectionGoal::None)
3496 });
3497 }
3498
3499 pub fn delete_to_next_word_end(
3500 &mut self,
3501 _: &DeleteToNextWordBoundary,
3502 cx: &mut ViewContext<Self>,
3503 ) {
3504 self.transact(cx, |this, cx| {
3505 this.move_selections(cx, |map, selection| {
3506 if selection.is_empty() {
3507 let cursor = movement::next_word_end(map, selection.head());
3508 selection.set_head(cursor, SelectionGoal::None);
3509 }
3510 });
3511 this.insert("", cx);
3512 });
3513 }
3514
3515 pub fn move_to_beginning_of_line(
3516 &mut self,
3517 _: &MoveToBeginningOfLine,
3518 cx: &mut ViewContext<Self>,
3519 ) {
3520 self.move_cursors(cx, |map, head, _| {
3521 (
3522 movement::line_beginning(map, head, true),
3523 SelectionGoal::None,
3524 )
3525 });
3526 }
3527
3528 pub fn select_to_beginning_of_line(
3529 &mut self,
3530 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3531 cx: &mut ViewContext<Self>,
3532 ) {
3533 self.move_selection_heads(cx, |map, head, _| {
3534 (
3535 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3536 SelectionGoal::None,
3537 )
3538 });
3539 }
3540
3541 pub fn delete_to_beginning_of_line(
3542 &mut self,
3543 _: &DeleteToBeginningOfLine,
3544 cx: &mut ViewContext<Self>,
3545 ) {
3546 self.transact(cx, |this, cx| {
3547 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3548 this.backspace(&Backspace, cx);
3549 });
3550 }
3551
3552 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3553 self.move_cursors(cx, |map, head, _| {
3554 (movement::line_end(map, head, true), SelectionGoal::None)
3555 });
3556 }
3557
3558 pub fn select_to_end_of_line(
3559 &mut self,
3560 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3561 cx: &mut ViewContext<Self>,
3562 ) {
3563 self.move_selection_heads(cx, |map, head, _| {
3564 (
3565 movement::line_end(map, head, *stop_at_soft_boundaries),
3566 SelectionGoal::None,
3567 )
3568 });
3569 }
3570
3571 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3572 self.transact(cx, |this, cx| {
3573 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3574 this.delete(&Delete, cx);
3575 });
3576 }
3577
3578 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3579 self.transact(cx, |this, cx| {
3580 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3581 this.cut(&Cut, cx);
3582 });
3583 }
3584
3585 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3586 if matches!(self.mode, EditorMode::SingleLine) {
3587 cx.propagate_action();
3588 return;
3589 }
3590
3591 let selection = Selection {
3592 id: post_inc(&mut self.next_selection_id),
3593 start: 0,
3594 end: 0,
3595 reversed: false,
3596 goal: SelectionGoal::None,
3597 };
3598 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3599 }
3600
3601 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3602 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3603 selection.set_head(Point::zero(), SelectionGoal::None);
3604 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3605 }
3606
3607 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3608 if matches!(self.mode, EditorMode::SingleLine) {
3609 cx.propagate_action();
3610 return;
3611 }
3612
3613 let cursor = self.buffer.read(cx).read(cx).len();
3614 let selection = Selection {
3615 id: post_inc(&mut self.next_selection_id),
3616 start: cursor,
3617 end: cursor,
3618 reversed: false,
3619 goal: SelectionGoal::None,
3620 };
3621 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3622 }
3623
3624 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3625 self.nav_history = nav_history;
3626 }
3627
3628 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3629 self.nav_history.as_ref()
3630 }
3631
3632 fn push_to_nav_history(
3633 &self,
3634 position: Anchor,
3635 new_position: Option<Point>,
3636 cx: &mut ViewContext<Self>,
3637 ) {
3638 if let Some(nav_history) = &self.nav_history {
3639 let buffer = self.buffer.read(cx).read(cx);
3640 let offset = position.to_offset(&buffer);
3641 let point = position.to_point(&buffer);
3642 drop(buffer);
3643
3644 if let Some(new_position) = new_position {
3645 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3646 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3647 return;
3648 }
3649 }
3650
3651 nav_history.push(Some(NavigationData {
3652 anchor: position,
3653 offset,
3654 }));
3655 }
3656 }
3657
3658 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3659 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3660 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3661 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3662 }
3663
3664 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3665 let selection = Selection {
3666 id: post_inc(&mut self.next_selection_id),
3667 start: 0,
3668 end: self.buffer.read(cx).read(cx).len(),
3669 reversed: false,
3670 goal: SelectionGoal::None,
3671 };
3672 self.update_selections(vec![selection], None, cx);
3673 }
3674
3675 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3676 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3677 let mut selections = self.local_selections::<Point>(cx);
3678 let max_point = display_map.buffer_snapshot.max_point();
3679 for selection in &mut selections {
3680 let rows = selection.spanned_rows(true, &display_map);
3681 selection.start = Point::new(rows.start, 0);
3682 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3683 selection.reversed = false;
3684 }
3685 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3686 }
3687
3688 pub fn split_selection_into_lines(
3689 &mut self,
3690 _: &SplitSelectionIntoLines,
3691 cx: &mut ViewContext<Self>,
3692 ) {
3693 let mut to_unfold = Vec::new();
3694 let mut new_selections = Vec::new();
3695 {
3696 let selections = self.local_selections::<Point>(cx);
3697 let buffer = self.buffer.read(cx).read(cx);
3698 for selection in selections {
3699 for row in selection.start.row..selection.end.row {
3700 let cursor = Point::new(row, buffer.line_len(row));
3701 new_selections.push(Selection {
3702 id: post_inc(&mut self.next_selection_id),
3703 start: cursor,
3704 end: cursor,
3705 reversed: false,
3706 goal: SelectionGoal::None,
3707 });
3708 }
3709 new_selections.push(Selection {
3710 id: selection.id,
3711 start: selection.end,
3712 end: selection.end,
3713 reversed: false,
3714 goal: SelectionGoal::None,
3715 });
3716 to_unfold.push(selection.start..selection.end);
3717 }
3718 }
3719 self.unfold_ranges(to_unfold, cx);
3720 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3721 }
3722
3723 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3724 self.add_selection(true, cx);
3725 }
3726
3727 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3728 self.add_selection(false, cx);
3729 }
3730
3731 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3732 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3733 let mut selections = self.local_selections::<Point>(cx);
3734 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3735 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3736 let range = oldest_selection.display_range(&display_map).sorted();
3737 let columns = cmp::min(range.start.column(), range.end.column())
3738 ..cmp::max(range.start.column(), range.end.column());
3739
3740 selections.clear();
3741 let mut stack = Vec::new();
3742 for row in range.start.row()..=range.end.row() {
3743 if let Some(selection) = self.build_columnar_selection(
3744 &display_map,
3745 row,
3746 &columns,
3747 oldest_selection.reversed,
3748 ) {
3749 stack.push(selection.id);
3750 selections.push(selection);
3751 }
3752 }
3753
3754 if above {
3755 stack.reverse();
3756 }
3757
3758 AddSelectionsState { above, stack }
3759 });
3760
3761 let last_added_selection = *state.stack.last().unwrap();
3762 let mut new_selections = Vec::new();
3763 if above == state.above {
3764 let end_row = if above {
3765 0
3766 } else {
3767 display_map.max_point().row()
3768 };
3769
3770 'outer: for selection in selections {
3771 if selection.id == last_added_selection {
3772 let range = selection.display_range(&display_map).sorted();
3773 debug_assert_eq!(range.start.row(), range.end.row());
3774 let mut row = range.start.row();
3775 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3776 {
3777 start..end
3778 } else {
3779 cmp::min(range.start.column(), range.end.column())
3780 ..cmp::max(range.start.column(), range.end.column())
3781 };
3782
3783 while row != end_row {
3784 if above {
3785 row -= 1;
3786 } else {
3787 row += 1;
3788 }
3789
3790 if let Some(new_selection) = self.build_columnar_selection(
3791 &display_map,
3792 row,
3793 &columns,
3794 selection.reversed,
3795 ) {
3796 state.stack.push(new_selection.id);
3797 if above {
3798 new_selections.push(new_selection);
3799 new_selections.push(selection);
3800 } else {
3801 new_selections.push(selection);
3802 new_selections.push(new_selection);
3803 }
3804
3805 continue 'outer;
3806 }
3807 }
3808 }
3809
3810 new_selections.push(selection);
3811 }
3812 } else {
3813 new_selections = selections;
3814 new_selections.retain(|s| s.id != last_added_selection);
3815 state.stack.pop();
3816 }
3817
3818 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3819 if state.stack.len() > 1 {
3820 self.add_selections_state = Some(state);
3821 }
3822 }
3823
3824 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3825 let replace_newest = action.0;
3826 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3827 let buffer = &display_map.buffer_snapshot;
3828 let mut selections = self.local_selections::<usize>(cx);
3829 if let Some(mut select_next_state) = self.select_next_state.take() {
3830 let query = &select_next_state.query;
3831 if !select_next_state.done {
3832 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3833 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3834 let mut next_selected_range = None;
3835
3836 let bytes_after_last_selection =
3837 buffer.bytes_in_range(last_selection.end..buffer.len());
3838 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3839 let query_matches = query
3840 .stream_find_iter(bytes_after_last_selection)
3841 .map(|result| (last_selection.end, result))
3842 .chain(
3843 query
3844 .stream_find_iter(bytes_before_first_selection)
3845 .map(|result| (0, result)),
3846 );
3847 for (start_offset, query_match) in query_matches {
3848 let query_match = query_match.unwrap(); // can only fail due to I/O
3849 let offset_range =
3850 start_offset + query_match.start()..start_offset + query_match.end();
3851 let display_range = offset_range.start.to_display_point(&display_map)
3852 ..offset_range.end.to_display_point(&display_map);
3853
3854 if !select_next_state.wordwise
3855 || (!movement::is_inside_word(&display_map, display_range.start)
3856 && !movement::is_inside_word(&display_map, display_range.end))
3857 {
3858 next_selected_range = Some(offset_range);
3859 break;
3860 }
3861 }
3862
3863 if let Some(next_selected_range) = next_selected_range {
3864 if replace_newest {
3865 if let Some(newest_id) =
3866 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3867 {
3868 selections.retain(|s| s.id != newest_id);
3869 }
3870 }
3871 selections.push(Selection {
3872 id: post_inc(&mut self.next_selection_id),
3873 start: next_selected_range.start,
3874 end: next_selected_range.end,
3875 reversed: false,
3876 goal: SelectionGoal::None,
3877 });
3878 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3879 } else {
3880 select_next_state.done = true;
3881 }
3882 }
3883
3884 self.select_next_state = Some(select_next_state);
3885 } else if selections.len() == 1 {
3886 let selection = selections.last_mut().unwrap();
3887 if selection.start == selection.end {
3888 let word_range = movement::surrounding_word(
3889 &display_map,
3890 selection.start.to_display_point(&display_map),
3891 );
3892 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3893 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3894 selection.goal = SelectionGoal::None;
3895 selection.reversed = false;
3896
3897 let query = buffer
3898 .text_for_range(selection.start..selection.end)
3899 .collect::<String>();
3900 let select_state = SelectNextState {
3901 query: AhoCorasick::new_auto_configured(&[query]),
3902 wordwise: true,
3903 done: false,
3904 };
3905 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3906 self.select_next_state = Some(select_state);
3907 } else {
3908 let query = buffer
3909 .text_for_range(selection.start..selection.end)
3910 .collect::<String>();
3911 self.select_next_state = Some(SelectNextState {
3912 query: AhoCorasick::new_auto_configured(&[query]),
3913 wordwise: false,
3914 done: false,
3915 });
3916 self.select_next(action, cx);
3917 }
3918 }
3919 }
3920
3921 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3922 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3923 // as that portion won't be used for detecting if a line is a comment.
3924 let full_comment_prefix =
3925 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3926 prefix.to_string()
3927 } else {
3928 return;
3929 };
3930 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3931 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3932
3933 self.start_transaction(cx);
3934 let mut selections = self.local_selections::<Point>(cx);
3935 let mut all_selection_lines_are_comments = true;
3936 let mut edit_ranges = Vec::new();
3937 let mut last_toggled_row = None;
3938 self.buffer.update(cx, |buffer, cx| {
3939 for selection in &mut selections {
3940 edit_ranges.clear();
3941 let snapshot = buffer.snapshot(cx);
3942
3943 let end_row =
3944 if selection.end.row > selection.start.row && selection.end.column == 0 {
3945 selection.end.row
3946 } else {
3947 selection.end.row + 1
3948 };
3949
3950 for row in selection.start.row..end_row {
3951 // If multiple selections contain a given row, avoid processing that
3952 // row more than once.
3953 if last_toggled_row == Some(row) {
3954 continue;
3955 } else {
3956 last_toggled_row = Some(row);
3957 }
3958
3959 if snapshot.is_line_blank(row) {
3960 continue;
3961 }
3962
3963 let start = Point::new(row, snapshot.indent_column_for_line(row));
3964 let mut line_bytes = snapshot
3965 .bytes_in_range(start..snapshot.max_point())
3966 .flatten()
3967 .copied();
3968
3969 // If this line currently begins with the line comment prefix, then record
3970 // the range containing the prefix.
3971 if all_selection_lines_are_comments
3972 && line_bytes
3973 .by_ref()
3974 .take(comment_prefix.len())
3975 .eq(comment_prefix.bytes())
3976 {
3977 // Include any whitespace that matches the comment prefix.
3978 let matching_whitespace_len = line_bytes
3979 .zip(comment_prefix_whitespace.bytes())
3980 .take_while(|(a, b)| a == b)
3981 .count() as u32;
3982 let end = Point::new(
3983 row,
3984 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3985 );
3986 edit_ranges.push(start..end);
3987 }
3988 // If this line does not begin with the line comment prefix, then record
3989 // the position where the prefix should be inserted.
3990 else {
3991 all_selection_lines_are_comments = false;
3992 edit_ranges.push(start..start);
3993 }
3994 }
3995
3996 if !edit_ranges.is_empty() {
3997 if all_selection_lines_are_comments {
3998 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3999 } else {
4000 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4001 let edit_ranges = edit_ranges.iter().map(|range| {
4002 let position = Point::new(range.start.row, min_column);
4003 position..position
4004 });
4005 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4006 }
4007 }
4008 }
4009 });
4010
4011 self.update_selections(
4012 self.local_selections::<usize>(cx),
4013 Some(Autoscroll::Fit),
4014 cx,
4015 );
4016 self.end_transaction(cx);
4017 }
4018
4019 pub fn select_larger_syntax_node(
4020 &mut self,
4021 _: &SelectLargerSyntaxNode,
4022 cx: &mut ViewContext<Self>,
4023 ) {
4024 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4025 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4026 let buffer = self.buffer.read(cx).snapshot(cx);
4027
4028 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4029 let mut selected_larger_node = false;
4030 let new_selections = old_selections
4031 .iter()
4032 .map(|selection| {
4033 let old_range = selection.start..selection.end;
4034 let mut new_range = old_range.clone();
4035 while let Some(containing_range) =
4036 buffer.range_for_syntax_ancestor(new_range.clone())
4037 {
4038 new_range = containing_range;
4039 if !display_map.intersects_fold(new_range.start)
4040 && !display_map.intersects_fold(new_range.end)
4041 {
4042 break;
4043 }
4044 }
4045
4046 selected_larger_node |= new_range != old_range;
4047 Selection {
4048 id: selection.id,
4049 start: new_range.start,
4050 end: new_range.end,
4051 goal: SelectionGoal::None,
4052 reversed: selection.reversed,
4053 }
4054 })
4055 .collect::<Vec<_>>();
4056
4057 if selected_larger_node {
4058 stack.push(old_selections);
4059 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4060 }
4061 self.select_larger_syntax_node_stack = stack;
4062 }
4063
4064 pub fn select_smaller_syntax_node(
4065 &mut self,
4066 _: &SelectSmallerSyntaxNode,
4067 cx: &mut ViewContext<Self>,
4068 ) {
4069 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4070 if let Some(selections) = stack.pop() {
4071 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4072 }
4073 self.select_larger_syntax_node_stack = stack;
4074 }
4075
4076 pub fn move_to_enclosing_bracket(
4077 &mut self,
4078 _: &MoveToEnclosingBracket,
4079 cx: &mut ViewContext<Self>,
4080 ) {
4081 let mut selections = self.local_selections::<usize>(cx);
4082 let buffer = self.buffer.read(cx).snapshot(cx);
4083 for selection in &mut selections {
4084 if let Some((open_range, close_range)) =
4085 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4086 {
4087 let close_range = close_range.to_inclusive();
4088 let destination = if close_range.contains(&selection.start)
4089 && close_range.contains(&selection.end)
4090 {
4091 open_range.end
4092 } else {
4093 *close_range.start()
4094 };
4095 selection.start = destination;
4096 selection.end = destination;
4097 }
4098 }
4099
4100 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4101 }
4102
4103 pub fn go_to_diagnostic(
4104 &mut self,
4105 &GoToDiagnostic(direction): &GoToDiagnostic,
4106 cx: &mut ViewContext<Self>,
4107 ) {
4108 let buffer = self.buffer.read(cx).snapshot(cx);
4109 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4110 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4111 active_diagnostics
4112 .primary_range
4113 .to_offset(&buffer)
4114 .to_inclusive()
4115 });
4116 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4117 if active_primary_range.contains(&selection.head()) {
4118 *active_primary_range.end()
4119 } else {
4120 selection.head()
4121 }
4122 } else {
4123 selection.head()
4124 };
4125
4126 loop {
4127 let mut diagnostics = if direction == Direction::Prev {
4128 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4129 } else {
4130 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4131 };
4132 let group = diagnostics.find_map(|entry| {
4133 if entry.diagnostic.is_primary
4134 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4135 && !entry.range.is_empty()
4136 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4137 {
4138 Some((entry.range, entry.diagnostic.group_id))
4139 } else {
4140 None
4141 }
4142 });
4143
4144 if let Some((primary_range, group_id)) = group {
4145 self.activate_diagnostics(group_id, cx);
4146 self.update_selections(
4147 vec![Selection {
4148 id: selection.id,
4149 start: primary_range.start,
4150 end: primary_range.start,
4151 reversed: false,
4152 goal: SelectionGoal::None,
4153 }],
4154 Some(Autoscroll::Center),
4155 cx,
4156 );
4157 break;
4158 } else {
4159 // Cycle around to the start of the buffer, potentially moving back to the start of
4160 // the currently active diagnostic.
4161 active_primary_range.take();
4162 if direction == Direction::Prev {
4163 if search_start == buffer.len() {
4164 break;
4165 } else {
4166 search_start = buffer.len();
4167 }
4168 } else {
4169 if search_start == 0 {
4170 break;
4171 } else {
4172 search_start = 0;
4173 }
4174 }
4175 }
4176 }
4177 }
4178
4179 pub fn go_to_definition(
4180 workspace: &mut Workspace,
4181 _: &GoToDefinition,
4182 cx: &mut ViewContext<Workspace>,
4183 ) {
4184 let active_item = workspace.active_item(cx);
4185 let editor_handle = if let Some(editor) = active_item
4186 .as_ref()
4187 .and_then(|item| item.act_as::<Self>(cx))
4188 {
4189 editor
4190 } else {
4191 return;
4192 };
4193
4194 let editor = editor_handle.read(cx);
4195 let head = editor.newest_selection::<usize>(cx).head();
4196 let (buffer, head) =
4197 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4198 text_anchor
4199 } else {
4200 return;
4201 };
4202
4203 let project = workspace.project().clone();
4204 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4205 cx.spawn(|workspace, mut cx| async move {
4206 let definitions = definitions.await?;
4207 workspace.update(&mut cx, |workspace, cx| {
4208 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4209 for definition in definitions {
4210 let range = definition.range.to_offset(definition.buffer.read(cx));
4211
4212 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4213 target_editor_handle.update(cx, |target_editor, cx| {
4214 // When selecting a definition in a different buffer, disable the nav history
4215 // to avoid creating a history entry at the previous cursor location.
4216 if editor_handle != target_editor_handle {
4217 nav_history.borrow_mut().disable();
4218 }
4219 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4220 nav_history.borrow_mut().enable();
4221 });
4222 }
4223 });
4224
4225 Ok::<(), anyhow::Error>(())
4226 })
4227 .detach_and_log_err(cx);
4228 }
4229
4230 pub fn find_all_references(
4231 workspace: &mut Workspace,
4232 _: &FindAllReferences,
4233 cx: &mut ViewContext<Workspace>,
4234 ) -> Option<Task<Result<()>>> {
4235 let active_item = workspace.active_item(cx)?;
4236 let editor_handle = active_item.act_as::<Self>(cx)?;
4237
4238 let editor = editor_handle.read(cx);
4239 let head = editor.newest_selection::<usize>(cx).head();
4240 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4241 let replica_id = editor.replica_id(cx);
4242
4243 let project = workspace.project().clone();
4244 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4245 Some(cx.spawn(|workspace, mut cx| async move {
4246 let mut locations = references.await?;
4247 if locations.is_empty() {
4248 return Ok(());
4249 }
4250
4251 locations.sort_by_key(|location| location.buffer.id());
4252 let mut locations = locations.into_iter().peekable();
4253 let mut ranges_to_highlight = Vec::new();
4254
4255 let excerpt_buffer = cx.add_model(|cx| {
4256 let mut symbol_name = None;
4257 let mut multibuffer = MultiBuffer::new(replica_id);
4258 while let Some(location) = locations.next() {
4259 let buffer = location.buffer.read(cx);
4260 let mut ranges_for_buffer = Vec::new();
4261 let range = location.range.to_offset(buffer);
4262 ranges_for_buffer.push(range.clone());
4263 if symbol_name.is_none() {
4264 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4265 }
4266
4267 while let Some(next_location) = locations.peek() {
4268 if next_location.buffer == location.buffer {
4269 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4270 locations.next();
4271 } else {
4272 break;
4273 }
4274 }
4275
4276 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4277 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4278 location.buffer.clone(),
4279 ranges_for_buffer,
4280 1,
4281 cx,
4282 ));
4283 }
4284 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4285 });
4286
4287 workspace.update(&mut cx, |workspace, cx| {
4288 let editor =
4289 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4290 editor.update(cx, |editor, cx| {
4291 let color = editor.style(cx).highlighted_line_background;
4292 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4293 });
4294 workspace.add_item(Box::new(editor), cx);
4295 });
4296
4297 Ok(())
4298 }))
4299 }
4300
4301 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4302 use language::ToOffset as _;
4303
4304 let project = self.project.clone()?;
4305 let selection = self.newest_anchor_selection().clone();
4306 let (cursor_buffer, cursor_buffer_position) = self
4307 .buffer
4308 .read(cx)
4309 .text_anchor_for_position(selection.head(), cx)?;
4310 let (tail_buffer, _) = self
4311 .buffer
4312 .read(cx)
4313 .text_anchor_for_position(selection.tail(), cx)?;
4314 if tail_buffer != cursor_buffer {
4315 return None;
4316 }
4317
4318 let snapshot = cursor_buffer.read(cx).snapshot();
4319 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4320 let prepare_rename = project.update(cx, |project, cx| {
4321 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4322 });
4323
4324 Some(cx.spawn(|this, mut cx| async move {
4325 if let Some(rename_range) = prepare_rename.await? {
4326 let rename_buffer_range = rename_range.to_offset(&snapshot);
4327 let cursor_offset_in_rename_range =
4328 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4329
4330 this.update(&mut cx, |this, cx| {
4331 this.take_rename(false, cx);
4332 let style = this.style(cx);
4333 let buffer = this.buffer.read(cx).read(cx);
4334 let cursor_offset = selection.head().to_offset(&buffer);
4335 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4336 let rename_end = rename_start + rename_buffer_range.len();
4337 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4338 let mut old_highlight_id = None;
4339 let old_name = buffer
4340 .chunks(rename_start..rename_end, true)
4341 .map(|chunk| {
4342 if old_highlight_id.is_none() {
4343 old_highlight_id = chunk.syntax_highlight_id;
4344 }
4345 chunk.text
4346 })
4347 .collect();
4348
4349 drop(buffer);
4350
4351 // Position the selection in the rename editor so that it matches the current selection.
4352 this.show_local_selections = false;
4353 let rename_editor = cx.add_view(|cx| {
4354 let mut editor = Editor::single_line(None, cx);
4355 if let Some(old_highlight_id) = old_highlight_id {
4356 editor.override_text_style =
4357 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4358 }
4359 editor
4360 .buffer
4361 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4362 editor.select_all(&SelectAll, cx);
4363 editor
4364 });
4365
4366 let ranges = this
4367 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4368 .into_iter()
4369 .flat_map(|(_, ranges)| ranges)
4370 .chain(
4371 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4372 .into_iter()
4373 .flat_map(|(_, ranges)| ranges),
4374 )
4375 .collect();
4376 this.highlight_text::<Rename>(
4377 ranges,
4378 HighlightStyle {
4379 fade_out: Some(style.rename_fade),
4380 ..Default::default()
4381 },
4382 cx,
4383 );
4384 cx.focus(&rename_editor);
4385 let block_id = this.insert_blocks(
4386 [BlockProperties {
4387 position: range.start.clone(),
4388 height: 1,
4389 render: Arc::new({
4390 let editor = rename_editor.clone();
4391 move |cx: &BlockContext| {
4392 ChildView::new(editor.clone())
4393 .contained()
4394 .with_padding_left(cx.anchor_x)
4395 .boxed()
4396 }
4397 }),
4398 disposition: BlockDisposition::Below,
4399 }],
4400 cx,
4401 )[0];
4402 this.pending_rename = Some(RenameState {
4403 range,
4404 old_name,
4405 editor: rename_editor,
4406 block_id,
4407 });
4408 });
4409 }
4410
4411 Ok(())
4412 }))
4413 }
4414
4415 pub fn confirm_rename(
4416 workspace: &mut Workspace,
4417 _: &ConfirmRename,
4418 cx: &mut ViewContext<Workspace>,
4419 ) -> Option<Task<Result<()>>> {
4420 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4421
4422 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4423 let rename = editor.take_rename(false, cx)?;
4424 let buffer = editor.buffer.read(cx);
4425 let (start_buffer, start) =
4426 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4427 let (end_buffer, end) =
4428 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4429 if start_buffer == end_buffer {
4430 let new_name = rename.editor.read(cx).text(cx);
4431 Some((start_buffer, start..end, rename.old_name, new_name))
4432 } else {
4433 None
4434 }
4435 })?;
4436
4437 let rename = workspace.project().clone().update(cx, |project, cx| {
4438 project.perform_rename(
4439 buffer.clone(),
4440 range.start.clone(),
4441 new_name.clone(),
4442 true,
4443 cx,
4444 )
4445 });
4446
4447 Some(cx.spawn(|workspace, mut cx| async move {
4448 let project_transaction = rename.await?;
4449 Self::open_project_transaction(
4450 editor.clone(),
4451 workspace,
4452 project_transaction,
4453 format!("Rename: {} → {}", old_name, new_name),
4454 cx.clone(),
4455 )
4456 .await?;
4457
4458 editor.update(&mut cx, |editor, cx| {
4459 editor.refresh_document_highlights(cx);
4460 });
4461 Ok(())
4462 }))
4463 }
4464
4465 fn take_rename(
4466 &mut self,
4467 moving_cursor: bool,
4468 cx: &mut ViewContext<Self>,
4469 ) -> Option<RenameState> {
4470 let rename = self.pending_rename.take()?;
4471 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4472 self.clear_text_highlights::<Rename>(cx);
4473 self.show_local_selections = true;
4474
4475 if moving_cursor {
4476 let cursor_in_rename_editor =
4477 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4478
4479 // Update the selection to match the position of the selection inside
4480 // the rename editor.
4481 let snapshot = self.buffer.read(cx).read(cx);
4482 let rename_range = rename.range.to_offset(&snapshot);
4483 let cursor_in_editor = snapshot
4484 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4485 .min(rename_range.end);
4486 drop(snapshot);
4487
4488 self.update_selections(
4489 vec![Selection {
4490 id: self.newest_anchor_selection().id,
4491 start: cursor_in_editor,
4492 end: cursor_in_editor,
4493 reversed: false,
4494 goal: SelectionGoal::None,
4495 }],
4496 None,
4497 cx,
4498 );
4499 }
4500
4501 Some(rename)
4502 }
4503
4504 fn invalidate_rename_range(
4505 &mut self,
4506 buffer: &MultiBufferSnapshot,
4507 cx: &mut ViewContext<Self>,
4508 ) {
4509 if let Some(rename) = self.pending_rename.as_ref() {
4510 if self.selections.len() == 1 {
4511 let head = self.selections[0].head().to_offset(buffer);
4512 let range = rename.range.to_offset(buffer).to_inclusive();
4513 if range.contains(&head) {
4514 return;
4515 }
4516 }
4517 let rename = self.pending_rename.take().unwrap();
4518 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4519 self.clear_background_highlights::<Rename>(cx);
4520 }
4521 }
4522
4523 #[cfg(any(test, feature = "test-support"))]
4524 pub fn pending_rename(&self) -> Option<&RenameState> {
4525 self.pending_rename.as_ref()
4526 }
4527
4528 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4529 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4530 let buffer = self.buffer.read(cx).snapshot(cx);
4531 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4532 let is_valid = buffer
4533 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4534 .any(|entry| {
4535 entry.diagnostic.is_primary
4536 && !entry.range.is_empty()
4537 && entry.range.start == primary_range_start
4538 && entry.diagnostic.message == active_diagnostics.primary_message
4539 });
4540
4541 if is_valid != active_diagnostics.is_valid {
4542 active_diagnostics.is_valid = is_valid;
4543 let mut new_styles = HashMap::default();
4544 for (block_id, diagnostic) in &active_diagnostics.blocks {
4545 new_styles.insert(
4546 *block_id,
4547 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4548 );
4549 }
4550 self.display_map
4551 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4552 }
4553 }
4554 }
4555
4556 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4557 self.dismiss_diagnostics(cx);
4558 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4559 let buffer = self.buffer.read(cx).snapshot(cx);
4560
4561 let mut primary_range = None;
4562 let mut primary_message = None;
4563 let mut group_end = Point::zero();
4564 let diagnostic_group = buffer
4565 .diagnostic_group::<Point>(group_id)
4566 .map(|entry| {
4567 if entry.range.end > group_end {
4568 group_end = entry.range.end;
4569 }
4570 if entry.diagnostic.is_primary {
4571 primary_range = Some(entry.range.clone());
4572 primary_message = Some(entry.diagnostic.message.clone());
4573 }
4574 entry
4575 })
4576 .collect::<Vec<_>>();
4577 let primary_range = primary_range.unwrap();
4578 let primary_message = primary_message.unwrap();
4579 let primary_range =
4580 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4581
4582 let blocks = display_map
4583 .insert_blocks(
4584 diagnostic_group.iter().map(|entry| {
4585 let diagnostic = entry.diagnostic.clone();
4586 let message_height = diagnostic.message.lines().count() as u8;
4587 BlockProperties {
4588 position: buffer.anchor_after(entry.range.start),
4589 height: message_height,
4590 render: diagnostic_block_renderer(diagnostic, true),
4591 disposition: BlockDisposition::Below,
4592 }
4593 }),
4594 cx,
4595 )
4596 .into_iter()
4597 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4598 .collect();
4599
4600 Some(ActiveDiagnosticGroup {
4601 primary_range,
4602 primary_message,
4603 blocks,
4604 is_valid: true,
4605 })
4606 });
4607 }
4608
4609 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4610 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4611 self.display_map.update(cx, |display_map, cx| {
4612 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4613 });
4614 cx.notify();
4615 }
4616 }
4617
4618 fn build_columnar_selection(
4619 &mut self,
4620 display_map: &DisplaySnapshot,
4621 row: u32,
4622 columns: &Range<u32>,
4623 reversed: bool,
4624 ) -> Option<Selection<Point>> {
4625 let is_empty = columns.start == columns.end;
4626 let line_len = display_map.line_len(row);
4627 if columns.start < line_len || (is_empty && columns.start == line_len) {
4628 let start = DisplayPoint::new(row, columns.start);
4629 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4630 Some(Selection {
4631 id: post_inc(&mut self.next_selection_id),
4632 start: start.to_point(display_map),
4633 end: end.to_point(display_map),
4634 reversed,
4635 goal: SelectionGoal::ColumnRange {
4636 start: columns.start,
4637 end: columns.end,
4638 },
4639 })
4640 } else {
4641 None
4642 }
4643 }
4644
4645 pub fn local_selections_in_range(
4646 &self,
4647 range: Range<Anchor>,
4648 display_map: &DisplaySnapshot,
4649 ) -> Vec<Selection<Point>> {
4650 let buffer = &display_map.buffer_snapshot;
4651
4652 let start_ix = match self
4653 .selections
4654 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4655 {
4656 Ok(ix) | Err(ix) => ix,
4657 };
4658 let end_ix = match self
4659 .selections
4660 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4661 {
4662 Ok(ix) => ix + 1,
4663 Err(ix) => ix,
4664 };
4665
4666 fn point_selection(
4667 selection: &Selection<Anchor>,
4668 buffer: &MultiBufferSnapshot,
4669 ) -> Selection<Point> {
4670 let start = selection.start.to_point(&buffer);
4671 let end = selection.end.to_point(&buffer);
4672 Selection {
4673 id: selection.id,
4674 start,
4675 end,
4676 reversed: selection.reversed,
4677 goal: selection.goal,
4678 }
4679 }
4680
4681 self.selections[start_ix..end_ix]
4682 .iter()
4683 .chain(
4684 self.pending_selection
4685 .as_ref()
4686 .map(|pending| &pending.selection),
4687 )
4688 .map(|s| point_selection(s, &buffer))
4689 .collect()
4690 }
4691
4692 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4693 where
4694 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4695 {
4696 let buffer = self.buffer.read(cx).snapshot(cx);
4697 let mut selections = self
4698 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4699 .peekable();
4700
4701 let mut pending_selection = self.pending_selection::<D>(&buffer);
4702
4703 iter::from_fn(move || {
4704 if let Some(pending) = pending_selection.as_mut() {
4705 while let Some(next_selection) = selections.peek() {
4706 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4707 let next_selection = selections.next().unwrap();
4708 if next_selection.start < pending.start {
4709 pending.start = next_selection.start;
4710 }
4711 if next_selection.end > pending.end {
4712 pending.end = next_selection.end;
4713 }
4714 } else if next_selection.end < pending.start {
4715 return selections.next();
4716 } else {
4717 break;
4718 }
4719 }
4720
4721 pending_selection.take()
4722 } else {
4723 selections.next()
4724 }
4725 })
4726 .collect()
4727 }
4728
4729 fn resolve_selections<'a, D, I>(
4730 &self,
4731 selections: I,
4732 snapshot: &MultiBufferSnapshot,
4733 ) -> impl 'a + Iterator<Item = Selection<D>>
4734 where
4735 D: TextDimension + Ord + Sub<D, Output = D>,
4736 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4737 {
4738 let (to_summarize, selections) = selections.into_iter().tee();
4739 let mut summaries = snapshot
4740 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4741 .into_iter();
4742 selections.map(move |s| Selection {
4743 id: s.id,
4744 start: summaries.next().unwrap(),
4745 end: summaries.next().unwrap(),
4746 reversed: s.reversed,
4747 goal: s.goal,
4748 })
4749 }
4750
4751 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4752 &self,
4753 snapshot: &MultiBufferSnapshot,
4754 ) -> Option<Selection<D>> {
4755 self.pending_selection
4756 .as_ref()
4757 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4758 }
4759
4760 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4761 &self,
4762 selection: &Selection<Anchor>,
4763 buffer: &MultiBufferSnapshot,
4764 ) -> Selection<D> {
4765 Selection {
4766 id: selection.id,
4767 start: selection.start.summary::<D>(&buffer),
4768 end: selection.end.summary::<D>(&buffer),
4769 reversed: selection.reversed,
4770 goal: selection.goal,
4771 }
4772 }
4773
4774 fn selection_count<'a>(&self) -> usize {
4775 let mut count = self.selections.len();
4776 if self.pending_selection.is_some() {
4777 count += 1;
4778 }
4779 count
4780 }
4781
4782 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4783 &self,
4784 cx: &AppContext,
4785 ) -> Selection<D> {
4786 let snapshot = self.buffer.read(cx).read(cx);
4787 self.selections
4788 .iter()
4789 .min_by_key(|s| s.id)
4790 .map(|selection| self.resolve_selection(selection, &snapshot))
4791 .or_else(|| self.pending_selection(&snapshot))
4792 .unwrap()
4793 }
4794
4795 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4796 &self,
4797 cx: &AppContext,
4798 ) -> Selection<D> {
4799 self.resolve_selection(
4800 self.newest_anchor_selection(),
4801 &self.buffer.read(cx).read(cx),
4802 )
4803 }
4804
4805 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4806 &self,
4807 snapshot: &MultiBufferSnapshot,
4808 ) -> Selection<D> {
4809 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4810 }
4811
4812 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4813 self.pending_selection
4814 .as_ref()
4815 .map(|s| &s.selection)
4816 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4817 .unwrap()
4818 }
4819
4820 pub fn update_selections<T>(
4821 &mut self,
4822 mut selections: Vec<Selection<T>>,
4823 autoscroll: Option<Autoscroll>,
4824 cx: &mut ViewContext<Self>,
4825 ) where
4826 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4827 {
4828 let buffer = self.buffer.read(cx).snapshot(cx);
4829 selections.sort_unstable_by_key(|s| s.start);
4830
4831 // Merge overlapping selections.
4832 let mut i = 1;
4833 while i < selections.len() {
4834 if selections[i - 1].end >= selections[i].start {
4835 let removed = selections.remove(i);
4836 if removed.start < selections[i - 1].start {
4837 selections[i - 1].start = removed.start;
4838 }
4839 if removed.end > selections[i - 1].end {
4840 selections[i - 1].end = removed.end;
4841 }
4842 } else {
4843 i += 1;
4844 }
4845 }
4846
4847 if let Some(autoscroll) = autoscroll {
4848 self.request_autoscroll(autoscroll, cx);
4849 }
4850
4851 self.set_selections(
4852 Arc::from_iter(selections.into_iter().map(|selection| {
4853 let end_bias = if selection.end > selection.start {
4854 Bias::Left
4855 } else {
4856 Bias::Right
4857 };
4858 Selection {
4859 id: selection.id,
4860 start: buffer.anchor_after(selection.start),
4861 end: buffer.anchor_at(selection.end, end_bias),
4862 reversed: selection.reversed,
4863 goal: selection.goal,
4864 }
4865 })),
4866 None,
4867 cx,
4868 );
4869 }
4870
4871 /// Compute new ranges for any selections that were located in excerpts that have
4872 /// since been removed.
4873 ///
4874 /// Returns a `HashMap` indicating which selections whose former head position
4875 /// was no longer present. The keys of the map are selection ids. The values are
4876 /// the id of the new excerpt where the head of the selection has been moved.
4877 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4878 let snapshot = self.buffer.read(cx).read(cx);
4879 let anchors_with_status = snapshot.refresh_anchors(
4880 self.selections
4881 .iter()
4882 .flat_map(|selection| [&selection.start, &selection.end]),
4883 );
4884 let offsets =
4885 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4886 assert_eq!(anchors_with_status.len(), 2 * self.selections.len());
4887 assert_eq!(offsets.len(), anchors_with_status.len());
4888
4889 let offsets = offsets.chunks(2);
4890 let statuses = anchors_with_status
4891 .chunks(2)
4892 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4893
4894 let mut selections_with_lost_position = HashMap::default();
4895 let new_selections = offsets
4896 .zip(statuses)
4897 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4898 let selection = &self.selections[selection_ix];
4899 let kept_head = if selection.reversed {
4900 kept_start
4901 } else {
4902 kept_end
4903 };
4904 if !kept_head {
4905 selections_with_lost_position
4906 .insert(selection.id, selection.head().excerpt_id.clone());
4907 }
4908
4909 Selection {
4910 id: selection.id,
4911 start: offsets[0],
4912 end: offsets[1],
4913 reversed: selection.reversed,
4914 goal: selection.goal,
4915 }
4916 })
4917 .collect();
4918 drop(snapshot);
4919 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4920 selections_with_lost_position
4921 }
4922
4923 fn set_selections(
4924 &mut self,
4925 selections: Arc<[Selection<Anchor>]>,
4926 pending_selection: Option<PendingSelection>,
4927 cx: &mut ViewContext<Self>,
4928 ) {
4929 assert!(
4930 !selections.is_empty() || pending_selection.is_some(),
4931 "must have at least one selection"
4932 );
4933
4934 let old_cursor_position = self.newest_anchor_selection().head();
4935
4936 self.selections = selections;
4937 self.pending_selection = pending_selection;
4938 if self.focused {
4939 self.buffer.update(cx, |buffer, cx| {
4940 buffer.set_active_selections(&self.selections, cx)
4941 });
4942 }
4943
4944 let display_map = self
4945 .display_map
4946 .update(cx, |display_map, cx| display_map.snapshot(cx));
4947 let buffer = &display_map.buffer_snapshot;
4948 self.add_selections_state = None;
4949 self.select_next_state = None;
4950 self.select_larger_syntax_node_stack.clear();
4951 self.autoclose_stack.invalidate(&self.selections, &buffer);
4952 self.snippet_stack.invalidate(&self.selections, &buffer);
4953 self.invalidate_rename_range(&buffer, cx);
4954
4955 let new_cursor_position = self.newest_anchor_selection().head();
4956
4957 self.push_to_nav_history(
4958 old_cursor_position.clone(),
4959 Some(new_cursor_position.to_point(&buffer)),
4960 cx,
4961 );
4962
4963 let completion_menu = match self.context_menu.as_mut() {
4964 Some(ContextMenu::Completions(menu)) => Some(menu),
4965 _ => {
4966 self.context_menu.take();
4967 None
4968 }
4969 };
4970
4971 if let Some(completion_menu) = completion_menu {
4972 let cursor_position = new_cursor_position.to_offset(&buffer);
4973 let (word_range, kind) =
4974 buffer.surrounding_word(completion_menu.initial_position.clone());
4975 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4976 {
4977 let query = Self::completion_query(&buffer, cursor_position);
4978 cx.background()
4979 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4980 self.show_completions(&ShowCompletions, cx);
4981 } else {
4982 self.hide_context_menu(cx);
4983 }
4984 }
4985
4986 if old_cursor_position.to_display_point(&display_map).row()
4987 != new_cursor_position.to_display_point(&display_map).row()
4988 {
4989 self.available_code_actions.take();
4990 }
4991 self.refresh_code_actions(cx);
4992 self.refresh_document_highlights(cx);
4993
4994 self.pause_cursor_blinking(cx);
4995 cx.emit(Event::SelectionsChanged);
4996 }
4997
4998 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4999 self.autoscroll_request = Some(autoscroll);
5000 cx.notify();
5001 }
5002
5003 fn transact(
5004 &mut self,
5005 cx: &mut ViewContext<Self>,
5006 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5007 ) {
5008 self.start_transaction(cx);
5009 update(self, cx);
5010 self.end_transaction(cx);
5011 }
5012
5013 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5014 self.start_transaction_at(Instant::now(), cx);
5015 }
5016
5017 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5018 self.end_selection(cx);
5019 if let Some(tx_id) = self
5020 .buffer
5021 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5022 {
5023 self.selection_history
5024 .insert(tx_id, (self.selections.clone(), None));
5025 }
5026 }
5027
5028 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5029 self.end_transaction_at(Instant::now(), cx);
5030 }
5031
5032 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5033 if let Some(tx_id) = self
5034 .buffer
5035 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5036 {
5037 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5038 *end_selections = Some(self.selections.clone());
5039 } else {
5040 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5041 }
5042 }
5043 }
5044
5045 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5046 log::info!("Editor::page_up");
5047 }
5048
5049 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5050 log::info!("Editor::page_down");
5051 }
5052
5053 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5054 let mut fold_ranges = Vec::new();
5055
5056 let selections = self.local_selections::<Point>(cx);
5057 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5058 for selection in selections {
5059 let range = selection.display_range(&display_map).sorted();
5060 let buffer_start_row = range.start.to_point(&display_map).row;
5061
5062 for row in (0..=range.end.row()).rev() {
5063 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5064 let fold_range = self.foldable_range_for_line(&display_map, row);
5065 if fold_range.end.row >= buffer_start_row {
5066 fold_ranges.push(fold_range);
5067 if row <= range.start.row() {
5068 break;
5069 }
5070 }
5071 }
5072 }
5073 }
5074
5075 self.fold_ranges(fold_ranges, cx);
5076 }
5077
5078 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5079 let selections = self.local_selections::<Point>(cx);
5080 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5081 let buffer = &display_map.buffer_snapshot;
5082 let ranges = selections
5083 .iter()
5084 .map(|s| {
5085 let range = s.display_range(&display_map).sorted();
5086 let mut start = range.start.to_point(&display_map);
5087 let mut end = range.end.to_point(&display_map);
5088 start.column = 0;
5089 end.column = buffer.line_len(end.row);
5090 start..end
5091 })
5092 .collect::<Vec<_>>();
5093 self.unfold_ranges(ranges, cx);
5094 }
5095
5096 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5097 let max_point = display_map.max_point();
5098 if display_row >= max_point.row() {
5099 false
5100 } else {
5101 let (start_indent, is_blank) = display_map.line_indent(display_row);
5102 if is_blank {
5103 false
5104 } else {
5105 for display_row in display_row + 1..=max_point.row() {
5106 let (indent, is_blank) = display_map.line_indent(display_row);
5107 if !is_blank {
5108 return indent > start_indent;
5109 }
5110 }
5111 false
5112 }
5113 }
5114 }
5115
5116 fn foldable_range_for_line(
5117 &self,
5118 display_map: &DisplaySnapshot,
5119 start_row: u32,
5120 ) -> Range<Point> {
5121 let max_point = display_map.max_point();
5122
5123 let (start_indent, _) = display_map.line_indent(start_row);
5124 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5125 let mut end = None;
5126 for row in start_row + 1..=max_point.row() {
5127 let (indent, is_blank) = display_map.line_indent(row);
5128 if !is_blank && indent <= start_indent {
5129 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5130 break;
5131 }
5132 }
5133
5134 let end = end.unwrap_or(max_point);
5135 return start.to_point(display_map)..end.to_point(display_map);
5136 }
5137
5138 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5139 let selections = self.local_selections::<Point>(cx);
5140 let ranges = selections.into_iter().map(|s| s.start..s.end);
5141 self.fold_ranges(ranges, cx);
5142 }
5143
5144 fn fold_ranges<T: ToOffset>(
5145 &mut self,
5146 ranges: impl IntoIterator<Item = Range<T>>,
5147 cx: &mut ViewContext<Self>,
5148 ) {
5149 let mut ranges = ranges.into_iter().peekable();
5150 if ranges.peek().is_some() {
5151 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5152 self.request_autoscroll(Autoscroll::Fit, cx);
5153 cx.notify();
5154 }
5155 }
5156
5157 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5158 if !ranges.is_empty() {
5159 self.display_map
5160 .update(cx, |map, cx| map.unfold(ranges, cx));
5161 self.request_autoscroll(Autoscroll::Fit, cx);
5162 cx.notify();
5163 }
5164 }
5165
5166 pub fn insert_blocks(
5167 &mut self,
5168 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5169 cx: &mut ViewContext<Self>,
5170 ) -> Vec<BlockId> {
5171 let blocks = self
5172 .display_map
5173 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5174 self.request_autoscroll(Autoscroll::Fit, cx);
5175 blocks
5176 }
5177
5178 pub fn replace_blocks(
5179 &mut self,
5180 blocks: HashMap<BlockId, RenderBlock>,
5181 cx: &mut ViewContext<Self>,
5182 ) {
5183 self.display_map
5184 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5185 self.request_autoscroll(Autoscroll::Fit, cx);
5186 }
5187
5188 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5189 self.display_map.update(cx, |display_map, cx| {
5190 display_map.remove_blocks(block_ids, cx)
5191 });
5192 }
5193
5194 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5195 self.display_map
5196 .update(cx, |map, cx| map.snapshot(cx))
5197 .longest_row()
5198 }
5199
5200 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5201 self.display_map
5202 .update(cx, |map, cx| map.snapshot(cx))
5203 .max_point()
5204 }
5205
5206 pub fn text(&self, cx: &AppContext) -> String {
5207 self.buffer.read(cx).read(cx).text()
5208 }
5209
5210 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5211 self.buffer
5212 .read(cx)
5213 .as_singleton()
5214 .expect("you can only call set_text on editors for singleton buffers")
5215 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5216 }
5217
5218 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5219 self.display_map
5220 .update(cx, |map, cx| map.snapshot(cx))
5221 .text()
5222 }
5223
5224 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5225 let language = self.language(cx);
5226 let settings = cx.global::<Settings>();
5227 let mode = self
5228 .soft_wrap_mode_override
5229 .unwrap_or_else(|| settings.soft_wrap(language));
5230 match mode {
5231 settings::SoftWrap::None => SoftWrap::None,
5232 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5233 settings::SoftWrap::PreferredLineLength => {
5234 SoftWrap::Column(settings.preferred_line_length(language))
5235 }
5236 }
5237 }
5238
5239 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5240 self.soft_wrap_mode_override = Some(mode);
5241 cx.notify();
5242 }
5243
5244 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5245 self.display_map
5246 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5247 }
5248
5249 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5250 self.highlighted_rows = rows;
5251 }
5252
5253 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5254 self.highlighted_rows.clone()
5255 }
5256
5257 pub fn highlight_background<T: 'static>(
5258 &mut self,
5259 ranges: Vec<Range<Anchor>>,
5260 color: Color,
5261 cx: &mut ViewContext<Self>,
5262 ) {
5263 self.background_highlights
5264 .insert(TypeId::of::<T>(), (color, ranges));
5265 cx.notify();
5266 }
5267
5268 pub fn clear_background_highlights<T: 'static>(
5269 &mut self,
5270 cx: &mut ViewContext<Self>,
5271 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5272 cx.notify();
5273 self.background_highlights.remove(&TypeId::of::<T>())
5274 }
5275
5276 #[cfg(feature = "test-support")]
5277 pub fn all_background_highlights(
5278 &mut self,
5279 cx: &mut ViewContext<Self>,
5280 ) -> Vec<(Range<DisplayPoint>, Color)> {
5281 let snapshot = self.snapshot(cx);
5282 let buffer = &snapshot.buffer_snapshot;
5283 let start = buffer.anchor_before(0);
5284 let end = buffer.anchor_after(buffer.len());
5285 self.background_highlights_in_range(start..end, &snapshot)
5286 }
5287
5288 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5289 self.background_highlights
5290 .get(&TypeId::of::<T>())
5291 .map(|(color, ranges)| (*color, ranges.as_slice()))
5292 }
5293
5294 pub fn background_highlights_in_range(
5295 &self,
5296 search_range: Range<Anchor>,
5297 display_snapshot: &DisplaySnapshot,
5298 ) -> Vec<(Range<DisplayPoint>, Color)> {
5299 let mut results = Vec::new();
5300 let buffer = &display_snapshot.buffer_snapshot;
5301 for (color, ranges) in self.background_highlights.values() {
5302 let start_ix = match ranges.binary_search_by(|probe| {
5303 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5304 if cmp.is_gt() {
5305 Ordering::Greater
5306 } else {
5307 Ordering::Less
5308 }
5309 }) {
5310 Ok(i) | Err(i) => i,
5311 };
5312 for range in &ranges[start_ix..] {
5313 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5314 break;
5315 }
5316 let start = range
5317 .start
5318 .to_point(buffer)
5319 .to_display_point(display_snapshot);
5320 let end = range
5321 .end
5322 .to_point(buffer)
5323 .to_display_point(display_snapshot);
5324 results.push((start..end, *color))
5325 }
5326 }
5327 results
5328 }
5329
5330 pub fn highlight_text<T: 'static>(
5331 &mut self,
5332 ranges: Vec<Range<Anchor>>,
5333 style: HighlightStyle,
5334 cx: &mut ViewContext<Self>,
5335 ) {
5336 self.display_map.update(cx, |map, _| {
5337 map.highlight_text(TypeId::of::<T>(), ranges, style)
5338 });
5339 cx.notify();
5340 }
5341
5342 pub fn clear_text_highlights<T: 'static>(
5343 &mut self,
5344 cx: &mut ViewContext<Self>,
5345 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5346 cx.notify();
5347 self.display_map
5348 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5349 }
5350
5351 fn next_blink_epoch(&mut self) -> usize {
5352 self.blink_epoch += 1;
5353 self.blink_epoch
5354 }
5355
5356 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5357 if !self.focused {
5358 return;
5359 }
5360
5361 self.show_local_cursors = true;
5362 cx.notify();
5363
5364 let epoch = self.next_blink_epoch();
5365 cx.spawn(|this, mut cx| {
5366 let this = this.downgrade();
5367 async move {
5368 Timer::after(CURSOR_BLINK_INTERVAL).await;
5369 if let Some(this) = this.upgrade(&cx) {
5370 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5371 }
5372 }
5373 })
5374 .detach();
5375 }
5376
5377 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5378 if epoch == self.blink_epoch {
5379 self.blinking_paused = false;
5380 self.blink_cursors(epoch, cx);
5381 }
5382 }
5383
5384 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5385 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5386 self.show_local_cursors = !self.show_local_cursors;
5387 cx.notify();
5388
5389 let epoch = self.next_blink_epoch();
5390 cx.spawn(|this, mut cx| {
5391 let this = this.downgrade();
5392 async move {
5393 Timer::after(CURSOR_BLINK_INTERVAL).await;
5394 if let Some(this) = this.upgrade(&cx) {
5395 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5396 }
5397 }
5398 })
5399 .detach();
5400 }
5401 }
5402
5403 pub fn show_local_cursors(&self) -> bool {
5404 self.show_local_cursors
5405 }
5406
5407 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5408 cx.notify();
5409 }
5410
5411 fn on_buffer_event(
5412 &mut self,
5413 _: ModelHandle<MultiBuffer>,
5414 event: &language::Event,
5415 cx: &mut ViewContext<Self>,
5416 ) {
5417 match event {
5418 language::Event::Edited => {
5419 self.refresh_active_diagnostics(cx);
5420 self.refresh_code_actions(cx);
5421 cx.emit(Event::Edited);
5422 }
5423 language::Event::Dirtied => cx.emit(Event::Dirtied),
5424 language::Event::Saved => cx.emit(Event::Saved),
5425 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5426 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5427 language::Event::Closed => cx.emit(Event::Closed),
5428 language::Event::DiagnosticsUpdated => {
5429 self.refresh_active_diagnostics(cx);
5430 }
5431 _ => {}
5432 }
5433 }
5434
5435 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5436 cx.notify();
5437 }
5438
5439 pub fn set_searchable(&mut self, searchable: bool) {
5440 self.searchable = searchable;
5441 }
5442
5443 pub fn searchable(&self) -> bool {
5444 self.searchable
5445 }
5446
5447 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5448 let active_item = workspace.active_item(cx);
5449 let editor_handle = if let Some(editor) = active_item
5450 .as_ref()
5451 .and_then(|item| item.act_as::<Self>(cx))
5452 {
5453 editor
5454 } else {
5455 cx.propagate_action();
5456 return;
5457 };
5458
5459 let editor = editor_handle.read(cx);
5460 let buffer = editor.buffer.read(cx);
5461 if buffer.is_singleton() {
5462 cx.propagate_action();
5463 return;
5464 }
5465
5466 let mut new_selections_by_buffer = HashMap::default();
5467 for selection in editor.local_selections::<usize>(cx) {
5468 for (buffer, mut range) in
5469 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5470 {
5471 if selection.reversed {
5472 mem::swap(&mut range.start, &mut range.end);
5473 }
5474 new_selections_by_buffer
5475 .entry(buffer)
5476 .or_insert(Vec::new())
5477 .push(range)
5478 }
5479 }
5480
5481 editor_handle.update(cx, |editor, cx| {
5482 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5483 });
5484 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5485 nav_history.borrow_mut().disable();
5486
5487 // We defer the pane interaction because we ourselves are a workspace item
5488 // and activating a new item causes the pane to call a method on us reentrantly,
5489 // which panics if we're on the stack.
5490 cx.defer(move |workspace, cx| {
5491 workspace.activate_next_pane(cx);
5492
5493 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5494 let editor = workspace.open_project_item::<Self>(buffer, cx);
5495 editor.update(cx, |editor, cx| {
5496 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5497 });
5498 }
5499
5500 nav_history.borrow_mut().enable();
5501 });
5502 }
5503}
5504
5505impl EditorSnapshot {
5506 pub fn is_focused(&self) -> bool {
5507 self.is_focused
5508 }
5509
5510 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5511 self.placeholder_text.as_ref()
5512 }
5513
5514 pub fn scroll_position(&self) -> Vector2F {
5515 compute_scroll_position(
5516 &self.display_snapshot,
5517 self.scroll_position,
5518 &self.scroll_top_anchor,
5519 )
5520 }
5521}
5522
5523impl Deref for EditorSnapshot {
5524 type Target = DisplaySnapshot;
5525
5526 fn deref(&self) -> &Self::Target {
5527 &self.display_snapshot
5528 }
5529}
5530
5531fn compute_scroll_position(
5532 snapshot: &DisplaySnapshot,
5533 mut scroll_position: Vector2F,
5534 scroll_top_anchor: &Option<Anchor>,
5535) -> Vector2F {
5536 if let Some(anchor) = scroll_top_anchor {
5537 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5538 scroll_position.set_y(scroll_top + scroll_position.y());
5539 } else {
5540 scroll_position.set_y(0.);
5541 }
5542 scroll_position
5543}
5544
5545#[derive(Copy, Clone)]
5546pub enum Event {
5547 Activate,
5548 Edited,
5549 Blurred,
5550 Dirtied,
5551 Saved,
5552 TitleChanged,
5553 SelectionsChanged,
5554 Closed,
5555}
5556
5557impl Entity for Editor {
5558 type Event = Event;
5559}
5560
5561impl View for Editor {
5562 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5563 let style = self.style(cx);
5564 self.display_map.update(cx, |map, cx| {
5565 map.set_font(style.text.font_id, style.text.font_size, cx)
5566 });
5567 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5568 }
5569
5570 fn ui_name() -> &'static str {
5571 "Editor"
5572 }
5573
5574 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5575 if let Some(rename) = self.pending_rename.as_ref() {
5576 cx.focus(&rename.editor);
5577 } else {
5578 self.focused = true;
5579 self.blink_cursors(self.blink_epoch, cx);
5580 self.buffer.update(cx, |buffer, cx| {
5581 buffer.finalize_last_transaction(cx);
5582 buffer.set_active_selections(&self.selections, cx)
5583 });
5584 }
5585 }
5586
5587 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5588 self.focused = false;
5589 self.buffer
5590 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5591 self.hide_context_menu(cx);
5592 cx.emit(Event::Blurred);
5593 cx.notify();
5594 }
5595
5596 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5597 let mut cx = Self::default_keymap_context();
5598 let mode = match self.mode {
5599 EditorMode::SingleLine => "single_line",
5600 EditorMode::AutoHeight { .. } => "auto_height",
5601 EditorMode::Full => "full",
5602 };
5603 cx.map.insert("mode".into(), mode.into());
5604 if self.pending_rename.is_some() {
5605 cx.set.insert("renaming".into());
5606 }
5607 match self.context_menu.as_ref() {
5608 Some(ContextMenu::Completions(_)) => {
5609 cx.set.insert("showing_completions".into());
5610 }
5611 Some(ContextMenu::CodeActions(_)) => {
5612 cx.set.insert("showing_code_actions".into());
5613 }
5614 None => {}
5615 }
5616 cx
5617 }
5618}
5619
5620fn build_style(
5621 settings: &Settings,
5622 get_field_editor_theme: Option<GetFieldEditorTheme>,
5623 override_text_style: Option<&OverrideTextStyle>,
5624 cx: &AppContext,
5625) -> EditorStyle {
5626 let font_cache = cx.font_cache();
5627
5628 let mut theme = settings.theme.editor.clone();
5629 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5630 let field_editor_theme = get_field_editor_theme(&settings.theme);
5631 theme.text_color = field_editor_theme.text.color;
5632 theme.selection = field_editor_theme.selection;
5633 theme.background = field_editor_theme
5634 .container
5635 .background_color
5636 .unwrap_or_default();
5637 EditorStyle {
5638 text: field_editor_theme.text,
5639 placeholder_text: field_editor_theme.placeholder_text,
5640 theme,
5641 }
5642 } else {
5643 let font_family_id = settings.buffer_font_family;
5644 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5645 let font_properties = Default::default();
5646 let font_id = font_cache
5647 .select_font(font_family_id, &font_properties)
5648 .unwrap();
5649 let font_size = settings.buffer_font_size;
5650 EditorStyle {
5651 text: TextStyle {
5652 color: settings.theme.editor.text_color,
5653 font_family_name,
5654 font_family_id,
5655 font_id,
5656 font_size,
5657 font_properties,
5658 underline: Default::default(),
5659 },
5660 placeholder_text: None,
5661 theme,
5662 }
5663 };
5664
5665 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5666 if let Some(highlighted) = style
5667 .text
5668 .clone()
5669 .highlight(highlight_style, font_cache)
5670 .log_err()
5671 {
5672 style.text = highlighted;
5673 }
5674 }
5675
5676 style
5677}
5678
5679trait SelectionExt {
5680 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5681 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5682 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5683 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5684 -> Range<u32>;
5685}
5686
5687impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5688 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5689 let start = self.start.to_point(buffer);
5690 let end = self.end.to_point(buffer);
5691 if self.reversed {
5692 end..start
5693 } else {
5694 start..end
5695 }
5696 }
5697
5698 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5699 let start = self.start.to_offset(buffer);
5700 let end = self.end.to_offset(buffer);
5701 if self.reversed {
5702 end..start
5703 } else {
5704 start..end
5705 }
5706 }
5707
5708 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5709 let start = self
5710 .start
5711 .to_point(&map.buffer_snapshot)
5712 .to_display_point(map);
5713 let end = self
5714 .end
5715 .to_point(&map.buffer_snapshot)
5716 .to_display_point(map);
5717 if self.reversed {
5718 end..start
5719 } else {
5720 start..end
5721 }
5722 }
5723
5724 fn spanned_rows(
5725 &self,
5726 include_end_if_at_line_start: bool,
5727 map: &DisplaySnapshot,
5728 ) -> Range<u32> {
5729 let start = self.start.to_point(&map.buffer_snapshot);
5730 let mut end = self.end.to_point(&map.buffer_snapshot);
5731 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5732 end.row -= 1;
5733 }
5734
5735 let buffer_start = map.prev_line_boundary(start).0;
5736 let buffer_end = map.next_line_boundary(end).0;
5737 buffer_start.row..buffer_end.row + 1
5738 }
5739}
5740
5741impl<T: InvalidationRegion> InvalidationStack<T> {
5742 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5743 where
5744 S: Clone + ToOffset,
5745 {
5746 while let Some(region) = self.last() {
5747 let all_selections_inside_invalidation_ranges =
5748 if selections.len() == region.ranges().len() {
5749 selections
5750 .iter()
5751 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5752 .all(|(selection, invalidation_range)| {
5753 let head = selection.head().to_offset(&buffer);
5754 invalidation_range.start <= head && invalidation_range.end >= head
5755 })
5756 } else {
5757 false
5758 };
5759
5760 if all_selections_inside_invalidation_ranges {
5761 break;
5762 } else {
5763 self.pop();
5764 }
5765 }
5766 }
5767}
5768
5769impl<T> Default for InvalidationStack<T> {
5770 fn default() -> Self {
5771 Self(Default::default())
5772 }
5773}
5774
5775impl<T> Deref for InvalidationStack<T> {
5776 type Target = Vec<T>;
5777
5778 fn deref(&self) -> &Self::Target {
5779 &self.0
5780 }
5781}
5782
5783impl<T> DerefMut for InvalidationStack<T> {
5784 fn deref_mut(&mut self) -> &mut Self::Target {
5785 &mut self.0
5786 }
5787}
5788
5789impl InvalidationRegion for BracketPairState {
5790 fn ranges(&self) -> &[Range<Anchor>] {
5791 &self.ranges
5792 }
5793}
5794
5795impl InvalidationRegion for SnippetState {
5796 fn ranges(&self) -> &[Range<Anchor>] {
5797 &self.ranges[self.active_index]
5798 }
5799}
5800
5801impl Deref for EditorStyle {
5802 type Target = theme::Editor;
5803
5804 fn deref(&self) -> &Self::Target {
5805 &self.theme
5806 }
5807}
5808
5809pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5810 let mut highlighted_lines = Vec::new();
5811 for line in diagnostic.message.lines() {
5812 highlighted_lines.push(highlight_diagnostic_message(line));
5813 }
5814
5815 Arc::new(move |cx: &BlockContext| {
5816 let settings = cx.global::<Settings>();
5817 let theme = &settings.theme.editor;
5818 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5819 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5820 Flex::column()
5821 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5822 Label::new(
5823 line.clone(),
5824 style.message.clone().with_font_size(font_size),
5825 )
5826 .with_highlights(highlights.clone())
5827 .contained()
5828 .with_margin_left(cx.anchor_x)
5829 .boxed()
5830 }))
5831 .aligned()
5832 .left()
5833 .boxed()
5834 })
5835}
5836
5837pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5838 let mut message_without_backticks = String::new();
5839 let mut prev_offset = 0;
5840 let mut inside_block = false;
5841 let mut highlights = Vec::new();
5842 for (match_ix, (offset, _)) in message
5843 .match_indices('`')
5844 .chain([(message.len(), "")])
5845 .enumerate()
5846 {
5847 message_without_backticks.push_str(&message[prev_offset..offset]);
5848 if inside_block {
5849 highlights.extend(prev_offset - match_ix..offset - match_ix);
5850 }
5851
5852 inside_block = !inside_block;
5853 prev_offset = offset + 1;
5854 }
5855
5856 (message_without_backticks, highlights)
5857}
5858
5859pub fn diagnostic_style(
5860 severity: DiagnosticSeverity,
5861 valid: bool,
5862 theme: &theme::Editor,
5863) -> DiagnosticStyle {
5864 match (severity, valid) {
5865 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5866 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5867 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5868 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5869 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5870 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5871 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5872 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5873 _ => theme.invalid_hint_diagnostic.clone(),
5874 }
5875}
5876
5877pub fn combine_syntax_and_fuzzy_match_highlights(
5878 text: &str,
5879 default_style: HighlightStyle,
5880 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5881 match_indices: &[usize],
5882) -> Vec<(Range<usize>, HighlightStyle)> {
5883 let mut result = Vec::new();
5884 let mut match_indices = match_indices.iter().copied().peekable();
5885
5886 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5887 {
5888 syntax_highlight.weight = None;
5889
5890 // Add highlights for any fuzzy match characters before the next
5891 // syntax highlight range.
5892 while let Some(&match_index) = match_indices.peek() {
5893 if match_index >= range.start {
5894 break;
5895 }
5896 match_indices.next();
5897 let end_index = char_ix_after(match_index, text);
5898 let mut match_style = default_style;
5899 match_style.weight = Some(fonts::Weight::BOLD);
5900 result.push((match_index..end_index, match_style));
5901 }
5902
5903 if range.start == usize::MAX {
5904 break;
5905 }
5906
5907 // Add highlights for any fuzzy match characters within the
5908 // syntax highlight range.
5909 let mut offset = range.start;
5910 while let Some(&match_index) = match_indices.peek() {
5911 if match_index >= range.end {
5912 break;
5913 }
5914
5915 match_indices.next();
5916 if match_index > offset {
5917 result.push((offset..match_index, syntax_highlight));
5918 }
5919
5920 let mut end_index = char_ix_after(match_index, text);
5921 while let Some(&next_match_index) = match_indices.peek() {
5922 if next_match_index == end_index && next_match_index < range.end {
5923 end_index = char_ix_after(next_match_index, text);
5924 match_indices.next();
5925 } else {
5926 break;
5927 }
5928 }
5929
5930 let mut match_style = syntax_highlight;
5931 match_style.weight = Some(fonts::Weight::BOLD);
5932 result.push((match_index..end_index, match_style));
5933 offset = end_index;
5934 }
5935
5936 if offset < range.end {
5937 result.push((offset..range.end, syntax_highlight));
5938 }
5939 }
5940
5941 fn char_ix_after(ix: usize, text: &str) -> usize {
5942 ix + text[ix..].chars().next().unwrap().len_utf8()
5943 }
5944
5945 result
5946}
5947
5948pub fn styled_runs_for_code_label<'a>(
5949 label: &'a CodeLabel,
5950 syntax_theme: &'a theme::SyntaxTheme,
5951) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5952 let fade_out = HighlightStyle {
5953 fade_out: Some(0.35),
5954 ..Default::default()
5955 };
5956
5957 let mut prev_end = label.filter_range.end;
5958 label
5959 .runs
5960 .iter()
5961 .enumerate()
5962 .flat_map(move |(ix, (range, highlight_id))| {
5963 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5964 style
5965 } else {
5966 return Default::default();
5967 };
5968 let mut muted_style = style.clone();
5969 muted_style.highlight(fade_out);
5970
5971 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5972 if range.start >= label.filter_range.end {
5973 if range.start > prev_end {
5974 runs.push((prev_end..range.start, fade_out));
5975 }
5976 runs.push((range.clone(), muted_style));
5977 } else if range.end <= label.filter_range.end {
5978 runs.push((range.clone(), style));
5979 } else {
5980 runs.push((range.start..label.filter_range.end, style));
5981 runs.push((label.filter_range.end..range.end, muted_style));
5982 }
5983 prev_end = cmp::max(prev_end, range.end);
5984
5985 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5986 runs.push((prev_end..label.text.len(), fade_out));
5987 }
5988
5989 runs
5990 })
5991}
5992
5993#[cfg(test)]
5994mod tests {
5995 use crate::test::marked_text_by;
5996
5997 use super::*;
5998 use language::{LanguageConfig, LanguageServerConfig};
5999 use lsp::FakeLanguageServer;
6000 use project::FakeFs;
6001 use smol::stream::StreamExt;
6002 use std::{cell::RefCell, rc::Rc, time::Instant};
6003 use text::Point;
6004 use unindent::Unindent;
6005 use util::test::sample_text;
6006
6007 #[gpui::test]
6008 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6009 populate_settings(cx);
6010 let mut now = Instant::now();
6011 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6012 let group_interval = buffer.read(cx).transaction_group_interval();
6013 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6014 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6015
6016 editor.update(cx, |editor, cx| {
6017 editor.start_transaction_at(now, cx);
6018 editor.select_ranges([2..4], None, cx);
6019 editor.insert("cd", cx);
6020 editor.end_transaction_at(now, cx);
6021 assert_eq!(editor.text(cx), "12cd56");
6022 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6023
6024 editor.start_transaction_at(now, cx);
6025 editor.select_ranges([4..5], None, cx);
6026 editor.insert("e", cx);
6027 editor.end_transaction_at(now, cx);
6028 assert_eq!(editor.text(cx), "12cde6");
6029 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6030
6031 now += group_interval + Duration::from_millis(1);
6032 editor.select_ranges([2..2], None, cx);
6033
6034 // Simulate an edit in another editor
6035 buffer.update(cx, |buffer, cx| {
6036 buffer.start_transaction_at(now, cx);
6037 buffer.edit([0..1], "a", cx);
6038 buffer.edit([1..1], "b", cx);
6039 buffer.end_transaction_at(now, cx);
6040 });
6041
6042 assert_eq!(editor.text(cx), "ab2cde6");
6043 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6044
6045 // Last transaction happened past the group interval in a different editor.
6046 // Undo it individually and don't restore selections.
6047 editor.undo(&Undo, cx);
6048 assert_eq!(editor.text(cx), "12cde6");
6049 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6050
6051 // First two transactions happened within the group interval in this editor.
6052 // Undo them together and restore selections.
6053 editor.undo(&Undo, cx);
6054 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6055 assert_eq!(editor.text(cx), "123456");
6056 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6057
6058 // Redo the first two transactions together.
6059 editor.redo(&Redo, cx);
6060 assert_eq!(editor.text(cx), "12cde6");
6061 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6062
6063 // Redo the last transaction on its own.
6064 editor.redo(&Redo, cx);
6065 assert_eq!(editor.text(cx), "ab2cde6");
6066 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6067
6068 // Test empty transactions.
6069 editor.start_transaction_at(now, cx);
6070 editor.end_transaction_at(now, cx);
6071 editor.undo(&Undo, cx);
6072 assert_eq!(editor.text(cx), "12cde6");
6073 });
6074 }
6075
6076 #[gpui::test]
6077 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6078 populate_settings(cx);
6079
6080 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6081 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6082 editor.update(cx, |view, cx| {
6083 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6084 });
6085 assert_eq!(
6086 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6087 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6088 );
6089
6090 editor.update(cx, |view, cx| {
6091 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6092 });
6093
6094 assert_eq!(
6095 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6096 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6097 );
6098
6099 editor.update(cx, |view, cx| {
6100 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6101 });
6102
6103 assert_eq!(
6104 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6105 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6106 );
6107
6108 editor.update(cx, |view, cx| {
6109 view.end_selection(cx);
6110 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6111 });
6112
6113 assert_eq!(
6114 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6115 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6116 );
6117
6118 editor.update(cx, |view, cx| {
6119 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6120 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6121 });
6122
6123 assert_eq!(
6124 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6125 [
6126 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6127 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6128 ]
6129 );
6130
6131 editor.update(cx, |view, cx| {
6132 view.end_selection(cx);
6133 });
6134
6135 assert_eq!(
6136 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6137 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6138 );
6139 }
6140
6141 #[gpui::test]
6142 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6143 populate_settings(cx);
6144 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6145 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6146
6147 view.update(cx, |view, cx| {
6148 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6149 assert_eq!(
6150 view.selected_display_ranges(cx),
6151 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6152 );
6153 });
6154
6155 view.update(cx, |view, cx| {
6156 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6157 assert_eq!(
6158 view.selected_display_ranges(cx),
6159 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6160 );
6161 });
6162
6163 view.update(cx, |view, cx| {
6164 view.cancel(&Cancel, cx);
6165 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6166 assert_eq!(
6167 view.selected_display_ranges(cx),
6168 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6169 );
6170 });
6171 }
6172
6173 #[gpui::test]
6174 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6175 populate_settings(cx);
6176 use workspace::Item;
6177 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6178 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6179
6180 cx.add_window(Default::default(), |cx| {
6181 let mut editor = build_editor(buffer.clone(), cx);
6182 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6183
6184 // Move the cursor a small distance.
6185 // Nothing is added to the navigation history.
6186 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6187 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6188 assert!(nav_history.borrow_mut().pop_backward().is_none());
6189
6190 // Move the cursor a large distance.
6191 // The history can jump back to the previous position.
6192 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6193 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6194 editor.navigate(nav_entry.data.unwrap(), cx);
6195 assert_eq!(nav_entry.item.id(), cx.view_id());
6196 assert_eq!(
6197 editor.selected_display_ranges(cx),
6198 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6199 );
6200
6201 // Move the cursor a small distance via the mouse.
6202 // Nothing is added to the navigation history.
6203 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6204 editor.end_selection(cx);
6205 assert_eq!(
6206 editor.selected_display_ranges(cx),
6207 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6208 );
6209 assert!(nav_history.borrow_mut().pop_backward().is_none());
6210
6211 // Move the cursor a large distance via the mouse.
6212 // The history can jump back to the previous position.
6213 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6214 editor.end_selection(cx);
6215 assert_eq!(
6216 editor.selected_display_ranges(cx),
6217 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6218 );
6219 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6220 editor.navigate(nav_entry.data.unwrap(), cx);
6221 assert_eq!(nav_entry.item.id(), cx.view_id());
6222 assert_eq!(
6223 editor.selected_display_ranges(cx),
6224 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6225 );
6226
6227 editor
6228 });
6229 }
6230
6231 #[gpui::test]
6232 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6233 populate_settings(cx);
6234 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6235 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6236
6237 view.update(cx, |view, cx| {
6238 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6239 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6240 view.end_selection(cx);
6241
6242 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6243 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6244 view.end_selection(cx);
6245 assert_eq!(
6246 view.selected_display_ranges(cx),
6247 [
6248 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6249 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6250 ]
6251 );
6252 });
6253
6254 view.update(cx, |view, cx| {
6255 view.cancel(&Cancel, cx);
6256 assert_eq!(
6257 view.selected_display_ranges(cx),
6258 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6259 );
6260 });
6261
6262 view.update(cx, |view, cx| {
6263 view.cancel(&Cancel, cx);
6264 assert_eq!(
6265 view.selected_display_ranges(cx),
6266 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6267 );
6268 });
6269 }
6270
6271 #[gpui::test]
6272 fn test_fold(cx: &mut gpui::MutableAppContext) {
6273 populate_settings(cx);
6274 let buffer = MultiBuffer::build_simple(
6275 &"
6276 impl Foo {
6277 // Hello!
6278
6279 fn a() {
6280 1
6281 }
6282
6283 fn b() {
6284 2
6285 }
6286
6287 fn c() {
6288 3
6289 }
6290 }
6291 "
6292 .unindent(),
6293 cx,
6294 );
6295 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6296
6297 view.update(cx, |view, cx| {
6298 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6299 view.fold(&Fold, cx);
6300 assert_eq!(
6301 view.display_text(cx),
6302 "
6303 impl Foo {
6304 // Hello!
6305
6306 fn a() {
6307 1
6308 }
6309
6310 fn b() {…
6311 }
6312
6313 fn c() {…
6314 }
6315 }
6316 "
6317 .unindent(),
6318 );
6319
6320 view.fold(&Fold, cx);
6321 assert_eq!(
6322 view.display_text(cx),
6323 "
6324 impl Foo {…
6325 }
6326 "
6327 .unindent(),
6328 );
6329
6330 view.unfold(&Unfold, cx);
6331 assert_eq!(
6332 view.display_text(cx),
6333 "
6334 impl Foo {
6335 // Hello!
6336
6337 fn a() {
6338 1
6339 }
6340
6341 fn b() {…
6342 }
6343
6344 fn c() {…
6345 }
6346 }
6347 "
6348 .unindent(),
6349 );
6350
6351 view.unfold(&Unfold, cx);
6352 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6353 });
6354 }
6355
6356 #[gpui::test]
6357 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6358 populate_settings(cx);
6359 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6360 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6361
6362 buffer.update(cx, |buffer, cx| {
6363 buffer.edit(
6364 vec![
6365 Point::new(1, 0)..Point::new(1, 0),
6366 Point::new(1, 1)..Point::new(1, 1),
6367 ],
6368 "\t",
6369 cx,
6370 );
6371 });
6372
6373 view.update(cx, |view, cx| {
6374 assert_eq!(
6375 view.selected_display_ranges(cx),
6376 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6377 );
6378
6379 view.move_down(&MoveDown, cx);
6380 assert_eq!(
6381 view.selected_display_ranges(cx),
6382 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6383 );
6384
6385 view.move_right(&MoveRight, cx);
6386 assert_eq!(
6387 view.selected_display_ranges(cx),
6388 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6389 );
6390
6391 view.move_left(&MoveLeft, cx);
6392 assert_eq!(
6393 view.selected_display_ranges(cx),
6394 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6395 );
6396
6397 view.move_up(&MoveUp, cx);
6398 assert_eq!(
6399 view.selected_display_ranges(cx),
6400 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6401 );
6402
6403 view.move_to_end(&MoveToEnd, cx);
6404 assert_eq!(
6405 view.selected_display_ranges(cx),
6406 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6407 );
6408
6409 view.move_to_beginning(&MoveToBeginning, cx);
6410 assert_eq!(
6411 view.selected_display_ranges(cx),
6412 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6413 );
6414
6415 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6416 view.select_to_beginning(&SelectToBeginning, cx);
6417 assert_eq!(
6418 view.selected_display_ranges(cx),
6419 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6420 );
6421
6422 view.select_to_end(&SelectToEnd, cx);
6423 assert_eq!(
6424 view.selected_display_ranges(cx),
6425 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6426 );
6427 });
6428 }
6429
6430 #[gpui::test]
6431 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6432 populate_settings(cx);
6433 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6434 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6435
6436 assert_eq!('ⓐ'.len_utf8(), 3);
6437 assert_eq!('α'.len_utf8(), 2);
6438
6439 view.update(cx, |view, cx| {
6440 view.fold_ranges(
6441 vec![
6442 Point::new(0, 6)..Point::new(0, 12),
6443 Point::new(1, 2)..Point::new(1, 4),
6444 Point::new(2, 4)..Point::new(2, 8),
6445 ],
6446 cx,
6447 );
6448 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6449
6450 view.move_right(&MoveRight, cx);
6451 assert_eq!(
6452 view.selected_display_ranges(cx),
6453 &[empty_range(0, "ⓐ".len())]
6454 );
6455 view.move_right(&MoveRight, cx);
6456 assert_eq!(
6457 view.selected_display_ranges(cx),
6458 &[empty_range(0, "ⓐⓑ".len())]
6459 );
6460 view.move_right(&MoveRight, cx);
6461 assert_eq!(
6462 view.selected_display_ranges(cx),
6463 &[empty_range(0, "ⓐⓑ…".len())]
6464 );
6465
6466 view.move_down(&MoveDown, cx);
6467 assert_eq!(
6468 view.selected_display_ranges(cx),
6469 &[empty_range(1, "ab…".len())]
6470 );
6471 view.move_left(&MoveLeft, cx);
6472 assert_eq!(
6473 view.selected_display_ranges(cx),
6474 &[empty_range(1, "ab".len())]
6475 );
6476 view.move_left(&MoveLeft, cx);
6477 assert_eq!(
6478 view.selected_display_ranges(cx),
6479 &[empty_range(1, "a".len())]
6480 );
6481
6482 view.move_down(&MoveDown, cx);
6483 assert_eq!(
6484 view.selected_display_ranges(cx),
6485 &[empty_range(2, "α".len())]
6486 );
6487 view.move_right(&MoveRight, cx);
6488 assert_eq!(
6489 view.selected_display_ranges(cx),
6490 &[empty_range(2, "αβ".len())]
6491 );
6492 view.move_right(&MoveRight, cx);
6493 assert_eq!(
6494 view.selected_display_ranges(cx),
6495 &[empty_range(2, "αβ…".len())]
6496 );
6497 view.move_right(&MoveRight, cx);
6498 assert_eq!(
6499 view.selected_display_ranges(cx),
6500 &[empty_range(2, "αβ…ε".len())]
6501 );
6502
6503 view.move_up(&MoveUp, cx);
6504 assert_eq!(
6505 view.selected_display_ranges(cx),
6506 &[empty_range(1, "ab…e".len())]
6507 );
6508 view.move_up(&MoveUp, cx);
6509 assert_eq!(
6510 view.selected_display_ranges(cx),
6511 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6512 );
6513 view.move_left(&MoveLeft, cx);
6514 assert_eq!(
6515 view.selected_display_ranges(cx),
6516 &[empty_range(0, "ⓐⓑ…".len())]
6517 );
6518 view.move_left(&MoveLeft, cx);
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 &[empty_range(0, "ⓐⓑ".len())]
6522 );
6523 view.move_left(&MoveLeft, cx);
6524 assert_eq!(
6525 view.selected_display_ranges(cx),
6526 &[empty_range(0, "ⓐ".len())]
6527 );
6528 });
6529 }
6530
6531 #[gpui::test]
6532 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6533 populate_settings(cx);
6534 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6535 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6536 view.update(cx, |view, cx| {
6537 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6538 view.move_down(&MoveDown, cx);
6539 assert_eq!(
6540 view.selected_display_ranges(cx),
6541 &[empty_range(1, "abcd".len())]
6542 );
6543
6544 view.move_down(&MoveDown, cx);
6545 assert_eq!(
6546 view.selected_display_ranges(cx),
6547 &[empty_range(2, "αβγ".len())]
6548 );
6549
6550 view.move_down(&MoveDown, cx);
6551 assert_eq!(
6552 view.selected_display_ranges(cx),
6553 &[empty_range(3, "abcd".len())]
6554 );
6555
6556 view.move_down(&MoveDown, cx);
6557 assert_eq!(
6558 view.selected_display_ranges(cx),
6559 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6560 );
6561
6562 view.move_up(&MoveUp, cx);
6563 assert_eq!(
6564 view.selected_display_ranges(cx),
6565 &[empty_range(3, "abcd".len())]
6566 );
6567
6568 view.move_up(&MoveUp, cx);
6569 assert_eq!(
6570 view.selected_display_ranges(cx),
6571 &[empty_range(2, "αβγ".len())]
6572 );
6573 });
6574 }
6575
6576 #[gpui::test]
6577 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6578 populate_settings(cx);
6579 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6580 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6581 view.update(cx, |view, cx| {
6582 view.select_display_ranges(
6583 &[
6584 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6585 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6586 ],
6587 cx,
6588 );
6589 });
6590
6591 view.update(cx, |view, cx| {
6592 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6593 assert_eq!(
6594 view.selected_display_ranges(cx),
6595 &[
6596 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6597 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6598 ]
6599 );
6600 });
6601
6602 view.update(cx, |view, cx| {
6603 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6604 assert_eq!(
6605 view.selected_display_ranges(cx),
6606 &[
6607 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6608 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6609 ]
6610 );
6611 });
6612
6613 view.update(cx, |view, cx| {
6614 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6615 assert_eq!(
6616 view.selected_display_ranges(cx),
6617 &[
6618 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6619 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6620 ]
6621 );
6622 });
6623
6624 view.update(cx, |view, cx| {
6625 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6626 assert_eq!(
6627 view.selected_display_ranges(cx),
6628 &[
6629 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6630 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6631 ]
6632 );
6633 });
6634
6635 // Moving to the end of line again is a no-op.
6636 view.update(cx, |view, cx| {
6637 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6638 assert_eq!(
6639 view.selected_display_ranges(cx),
6640 &[
6641 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6642 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6643 ]
6644 );
6645 });
6646
6647 view.update(cx, |view, cx| {
6648 view.move_left(&MoveLeft, cx);
6649 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6650 assert_eq!(
6651 view.selected_display_ranges(cx),
6652 &[
6653 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6654 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6655 ]
6656 );
6657 });
6658
6659 view.update(cx, |view, cx| {
6660 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6661 assert_eq!(
6662 view.selected_display_ranges(cx),
6663 &[
6664 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6665 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6666 ]
6667 );
6668 });
6669
6670 view.update(cx, |view, cx| {
6671 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6672 assert_eq!(
6673 view.selected_display_ranges(cx),
6674 &[
6675 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6676 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6677 ]
6678 );
6679 });
6680
6681 view.update(cx, |view, cx| {
6682 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6683 assert_eq!(
6684 view.selected_display_ranges(cx),
6685 &[
6686 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6687 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6688 ]
6689 );
6690 });
6691
6692 view.update(cx, |view, cx| {
6693 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6694 assert_eq!(view.display_text(cx), "ab\n de");
6695 assert_eq!(
6696 view.selected_display_ranges(cx),
6697 &[
6698 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6699 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6700 ]
6701 );
6702 });
6703
6704 view.update(cx, |view, cx| {
6705 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6706 assert_eq!(view.display_text(cx), "\n");
6707 assert_eq!(
6708 view.selected_display_ranges(cx),
6709 &[
6710 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6711 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6712 ]
6713 );
6714 });
6715 }
6716
6717 #[gpui::test]
6718 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6719 populate_settings(cx);
6720 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6721 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6722 view.update(cx, |view, cx| {
6723 view.select_display_ranges(
6724 &[
6725 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6726 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6727 ],
6728 cx,
6729 );
6730
6731 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6732 assert_selection_ranges(
6733 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6734 vec![('<', '>'), ('[', ']')],
6735 view,
6736 cx,
6737 );
6738
6739 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6740 assert_selection_ranges(
6741 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
6742 vec![('<', '>'), ('[', ']')],
6743 view,
6744 cx,
6745 );
6746
6747 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6748 assert_selection_ranges(
6749 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
6750 vec![('<', '>'), ('[', ']')],
6751 view,
6752 cx,
6753 );
6754
6755 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6756 assert_selection_ranges(
6757 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
6758 vec![('<', '>'), ('[', ']')],
6759 view,
6760 cx,
6761 );
6762
6763 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6764 assert_selection_ranges(
6765 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
6766 vec![('<', '>'), ('[', ']')],
6767 view,
6768 cx,
6769 );
6770
6771 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6772 assert_selection_ranges(
6773 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
6774 vec![('<', '>'), ('[', ']')],
6775 view,
6776 cx,
6777 );
6778
6779 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6780 assert_selection_ranges(
6781 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
6782 vec![('<', '>'), ('[', ']')],
6783 view,
6784 cx,
6785 );
6786
6787 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6788 assert_selection_ranges(
6789 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6790 vec![('<', '>'), ('[', ']')],
6791 view,
6792 cx,
6793 );
6794
6795 view.move_right(&MoveRight, cx);
6796 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6797 assert_selection_ranges(
6798 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6799 vec![('<', '>'), ('[', ']')],
6800 view,
6801 cx,
6802 );
6803
6804 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6805 assert_selection_ranges(
6806 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
6807 vec![('<', '>'), ('[', ']')],
6808 view,
6809 cx,
6810 );
6811
6812 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
6813 assert_selection_ranges(
6814 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6815 vec![('<', '>'), ('[', ']')],
6816 view,
6817 cx,
6818 );
6819 });
6820 }
6821
6822 #[gpui::test]
6823 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6824 populate_settings(cx);
6825 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6826 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6827
6828 view.update(cx, |view, cx| {
6829 view.set_wrap_width(Some(140.), cx);
6830 assert_eq!(
6831 view.display_text(cx),
6832 "use one::{\n two::three::\n four::five\n};"
6833 );
6834
6835 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6836
6837 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6838 assert_eq!(
6839 view.selected_display_ranges(cx),
6840 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6841 );
6842
6843 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6844 assert_eq!(
6845 view.selected_display_ranges(cx),
6846 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6847 );
6848
6849 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6850 assert_eq!(
6851 view.selected_display_ranges(cx),
6852 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6853 );
6854
6855 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6856 assert_eq!(
6857 view.selected_display_ranges(cx),
6858 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6859 );
6860
6861 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6865 );
6866
6867 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6868 assert_eq!(
6869 view.selected_display_ranges(cx),
6870 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6871 );
6872 });
6873 }
6874
6875 #[gpui::test]
6876 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6877 populate_settings(cx);
6878 let buffer = MultiBuffer::build_simple("one two three four", cx);
6879 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6880
6881 view.update(cx, |view, cx| {
6882 view.select_display_ranges(
6883 &[
6884 // an empty selection - the preceding word fragment is deleted
6885 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6886 // characters selected - they are deleted
6887 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6888 ],
6889 cx,
6890 );
6891 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
6892 });
6893
6894 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6895
6896 view.update(cx, |view, cx| {
6897 view.select_display_ranges(
6898 &[
6899 // an empty selection - the following word fragment is deleted
6900 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6901 // characters selected - they are deleted
6902 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6903 ],
6904 cx,
6905 );
6906 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
6907 });
6908
6909 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6910 }
6911
6912 #[gpui::test]
6913 fn test_newline(cx: &mut gpui::MutableAppContext) {
6914 populate_settings(cx);
6915 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6916 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6917
6918 view.update(cx, |view, cx| {
6919 view.select_display_ranges(
6920 &[
6921 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6922 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6923 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6924 ],
6925 cx,
6926 );
6927
6928 view.newline(&Newline, cx);
6929 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6930 });
6931 }
6932
6933 #[gpui::test]
6934 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6935 populate_settings(cx);
6936 let buffer = MultiBuffer::build_simple(
6937 "
6938 a
6939 b(
6940 X
6941 )
6942 c(
6943 X
6944 )
6945 "
6946 .unindent()
6947 .as_str(),
6948 cx,
6949 );
6950
6951 let (_, editor) = cx.add_window(Default::default(), |cx| {
6952 let mut editor = build_editor(buffer.clone(), cx);
6953 editor.select_ranges(
6954 [
6955 Point::new(2, 4)..Point::new(2, 5),
6956 Point::new(5, 4)..Point::new(5, 5),
6957 ],
6958 None,
6959 cx,
6960 );
6961 editor
6962 });
6963
6964 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6965 buffer.update(cx, |buffer, cx| {
6966 buffer.edit(
6967 [
6968 Point::new(1, 2)..Point::new(3, 0),
6969 Point::new(4, 2)..Point::new(6, 0),
6970 ],
6971 "",
6972 cx,
6973 );
6974 assert_eq!(
6975 buffer.read(cx).text(),
6976 "
6977 a
6978 b()
6979 c()
6980 "
6981 .unindent()
6982 );
6983 });
6984
6985 editor.update(cx, |editor, cx| {
6986 assert_eq!(
6987 editor.selected_ranges(cx),
6988 &[
6989 Point::new(1, 2)..Point::new(1, 2),
6990 Point::new(2, 2)..Point::new(2, 2),
6991 ],
6992 );
6993
6994 editor.newline(&Newline, cx);
6995 assert_eq!(
6996 editor.text(cx),
6997 "
6998 a
6999 b(
7000 )
7001 c(
7002 )
7003 "
7004 .unindent()
7005 );
7006
7007 // The selections are moved after the inserted newlines
7008 assert_eq!(
7009 editor.selected_ranges(cx),
7010 &[
7011 Point::new(2, 0)..Point::new(2, 0),
7012 Point::new(4, 0)..Point::new(4, 0),
7013 ],
7014 );
7015 });
7016 }
7017
7018 #[gpui::test]
7019 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7020 populate_settings(cx);
7021 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7022 let (_, editor) = cx.add_window(Default::default(), |cx| {
7023 let mut editor = build_editor(buffer.clone(), cx);
7024 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7025 editor
7026 });
7027
7028 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7029 buffer.update(cx, |buffer, cx| {
7030 buffer.edit([2..5, 10..13, 18..21], "", cx);
7031 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7032 });
7033
7034 editor.update(cx, |editor, cx| {
7035 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7036
7037 editor.insert("Z", cx);
7038 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7039
7040 // The selections are moved after the inserted characters
7041 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7042 });
7043 }
7044
7045 #[gpui::test]
7046 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7047 populate_settings(cx);
7048 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7049 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7050
7051 view.update(cx, |view, cx| {
7052 // two selections on the same line
7053 view.select_display_ranges(
7054 &[
7055 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7056 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7057 ],
7058 cx,
7059 );
7060
7061 // indent from mid-tabstop to full tabstop
7062 view.tab(&Tab, cx);
7063 assert_eq!(view.text(cx), " one two\nthree\n four");
7064 assert_eq!(
7065 view.selected_display_ranges(cx),
7066 &[
7067 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7068 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7069 ]
7070 );
7071
7072 // outdent from 1 tabstop to 0 tabstops
7073 view.outdent(&Outdent, cx);
7074 assert_eq!(view.text(cx), "one two\nthree\n four");
7075 assert_eq!(
7076 view.selected_display_ranges(cx),
7077 &[
7078 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7079 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7080 ]
7081 );
7082
7083 // select across line ending
7084 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7085
7086 // indent and outdent affect only the preceding line
7087 view.tab(&Tab, cx);
7088 assert_eq!(view.text(cx), "one two\n three\n four");
7089 assert_eq!(
7090 view.selected_display_ranges(cx),
7091 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7092 );
7093 view.outdent(&Outdent, cx);
7094 assert_eq!(view.text(cx), "one two\nthree\n four");
7095 assert_eq!(
7096 view.selected_display_ranges(cx),
7097 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7098 );
7099
7100 // Ensure that indenting/outdenting works when the cursor is at column 0.
7101 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7102 view.tab(&Tab, cx);
7103 assert_eq!(view.text(cx), "one two\n three\n four");
7104 assert_eq!(
7105 view.selected_display_ranges(cx),
7106 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7107 );
7108
7109 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7110 view.outdent(&Outdent, cx);
7111 assert_eq!(view.text(cx), "one two\nthree\n four");
7112 assert_eq!(
7113 view.selected_display_ranges(cx),
7114 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7115 );
7116 });
7117 }
7118
7119 #[gpui::test]
7120 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7121 populate_settings(cx);
7122 let (_, view) = cx.add_window(Default::default(), |cx| {
7123 build_editor(MultiBuffer::build_simple("", cx), cx)
7124 });
7125
7126 view.update(cx, |view, cx| {
7127 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7128 view.select_display_ranges(
7129 &[
7130 // an empty selection - the preceding character is deleted
7131 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7132 // one character selected - it is deleted
7133 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7134 // a line suffix selected - it is deleted
7135 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7136 ],
7137 cx,
7138 );
7139 view.backspace(&Backspace, cx);
7140 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7141
7142 view.set_text(" one\n two\n three\n four", cx);
7143 view.select_display_ranges(
7144 &[
7145 // cursors at the the end of leading indent - last indent is deleted
7146 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7147 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7148 // cursors inside leading indent - overlapping indent deletions are coalesced
7149 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7150 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7151 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7152 // cursor at the beginning of a line - preceding newline is deleted
7153 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7154 // selection inside leading indent - only the selected character is deleted
7155 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7156 ],
7157 cx,
7158 );
7159 view.backspace(&Backspace, cx);
7160 assert_eq!(view.text(cx), "one\n two\n three four");
7161 });
7162 }
7163
7164 #[gpui::test]
7165 fn test_delete(cx: &mut gpui::MutableAppContext) {
7166 populate_settings(cx);
7167 let buffer =
7168 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7169 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7170
7171 view.update(cx, |view, cx| {
7172 view.select_display_ranges(
7173 &[
7174 // an empty selection - the following character is deleted
7175 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7176 // one character selected - it is deleted
7177 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7178 // a line suffix selected - it is deleted
7179 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7180 ],
7181 cx,
7182 );
7183 view.delete(&Delete, cx);
7184 });
7185
7186 assert_eq!(
7187 buffer.read(cx).read(cx).text(),
7188 "on two three\nfou five six\nseven ten\n"
7189 );
7190 }
7191
7192 #[gpui::test]
7193 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7194 populate_settings(cx);
7195 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7196 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7197 view.update(cx, |view, cx| {
7198 view.select_display_ranges(
7199 &[
7200 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7201 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7202 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7203 ],
7204 cx,
7205 );
7206 view.delete_line(&DeleteLine, cx);
7207 assert_eq!(view.display_text(cx), "ghi");
7208 assert_eq!(
7209 view.selected_display_ranges(cx),
7210 vec![
7211 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7212 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7213 ]
7214 );
7215 });
7216
7217 populate_settings(cx);
7218 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7219 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7220 view.update(cx, |view, cx| {
7221 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7222 view.delete_line(&DeleteLine, cx);
7223 assert_eq!(view.display_text(cx), "ghi\n");
7224 assert_eq!(
7225 view.selected_display_ranges(cx),
7226 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7227 );
7228 });
7229 }
7230
7231 #[gpui::test]
7232 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7233 populate_settings(cx);
7234 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7235 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7236 view.update(cx, |view, cx| {
7237 view.select_display_ranges(
7238 &[
7239 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7240 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7241 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7242 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7243 ],
7244 cx,
7245 );
7246 view.duplicate_line(&DuplicateLine, cx);
7247 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7248 assert_eq!(
7249 view.selected_display_ranges(cx),
7250 vec![
7251 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7252 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7253 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7254 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7255 ]
7256 );
7257 });
7258
7259 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7260 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7261 view.update(cx, |view, cx| {
7262 view.select_display_ranges(
7263 &[
7264 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7265 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7266 ],
7267 cx,
7268 );
7269 view.duplicate_line(&DuplicateLine, cx);
7270 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7271 assert_eq!(
7272 view.selected_display_ranges(cx),
7273 vec![
7274 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7275 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7276 ]
7277 );
7278 });
7279 }
7280
7281 #[gpui::test]
7282 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7283 populate_settings(cx);
7284 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7285 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7286 view.update(cx, |view, cx| {
7287 view.fold_ranges(
7288 vec![
7289 Point::new(0, 2)..Point::new(1, 2),
7290 Point::new(2, 3)..Point::new(4, 1),
7291 Point::new(7, 0)..Point::new(8, 4),
7292 ],
7293 cx,
7294 );
7295 view.select_display_ranges(
7296 &[
7297 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7298 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7299 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7300 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7301 ],
7302 cx,
7303 );
7304 assert_eq!(
7305 view.display_text(cx),
7306 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7307 );
7308
7309 view.move_line_up(&MoveLineUp, cx);
7310 assert_eq!(
7311 view.display_text(cx),
7312 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7313 );
7314 assert_eq!(
7315 view.selected_display_ranges(cx),
7316 vec![
7317 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7318 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7319 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7320 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7321 ]
7322 );
7323 });
7324
7325 view.update(cx, |view, cx| {
7326 view.move_line_down(&MoveLineDown, cx);
7327 assert_eq!(
7328 view.display_text(cx),
7329 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7330 );
7331 assert_eq!(
7332 view.selected_display_ranges(cx),
7333 vec![
7334 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7335 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7336 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7337 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7338 ]
7339 );
7340 });
7341
7342 view.update(cx, |view, cx| {
7343 view.move_line_down(&MoveLineDown, cx);
7344 assert_eq!(
7345 view.display_text(cx),
7346 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7347 );
7348 assert_eq!(
7349 view.selected_display_ranges(cx),
7350 vec![
7351 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7352 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7353 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7354 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7355 ]
7356 );
7357 });
7358
7359 view.update(cx, |view, cx| {
7360 view.move_line_up(&MoveLineUp, cx);
7361 assert_eq!(
7362 view.display_text(cx),
7363 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7364 );
7365 assert_eq!(
7366 view.selected_display_ranges(cx),
7367 vec![
7368 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7369 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7370 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7371 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7372 ]
7373 );
7374 });
7375 }
7376
7377 #[gpui::test]
7378 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7379 populate_settings(cx);
7380 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7381 let snapshot = buffer.read(cx).snapshot(cx);
7382 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7383 editor.update(cx, |editor, cx| {
7384 editor.insert_blocks(
7385 [BlockProperties {
7386 position: snapshot.anchor_after(Point::new(2, 0)),
7387 disposition: BlockDisposition::Below,
7388 height: 1,
7389 render: Arc::new(|_| Empty::new().boxed()),
7390 }],
7391 cx,
7392 );
7393 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7394 editor.move_line_down(&MoveLineDown, cx);
7395 });
7396 }
7397
7398 #[gpui::test]
7399 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7400 populate_settings(cx);
7401 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7402 let view = cx
7403 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7404 .1;
7405
7406 // Cut with three selections. Clipboard text is divided into three slices.
7407 view.update(cx, |view, cx| {
7408 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7409 view.cut(&Cut, cx);
7410 assert_eq!(view.display_text(cx), "two four six ");
7411 });
7412
7413 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7414 view.update(cx, |view, cx| {
7415 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7416 view.paste(&Paste, cx);
7417 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7418 assert_eq!(
7419 view.selected_display_ranges(cx),
7420 &[
7421 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7422 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7423 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7424 ]
7425 );
7426 });
7427
7428 // Paste again but with only two cursors. Since the number of cursors doesn't
7429 // match the number of slices in the clipboard, the entire clipboard text
7430 // is pasted at each cursor.
7431 view.update(cx, |view, cx| {
7432 view.select_ranges(vec![0..0, 31..31], None, cx);
7433 view.handle_input(&Input("( ".into()), cx);
7434 view.paste(&Paste, cx);
7435 view.handle_input(&Input(") ".into()), cx);
7436 assert_eq!(
7437 view.display_text(cx),
7438 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7439 );
7440 });
7441
7442 view.update(cx, |view, cx| {
7443 view.select_ranges(vec![0..0], None, cx);
7444 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7445 assert_eq!(
7446 view.display_text(cx),
7447 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7448 );
7449 });
7450
7451 // Cut with three selections, one of which is full-line.
7452 view.update(cx, |view, cx| {
7453 view.select_display_ranges(
7454 &[
7455 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7456 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7457 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7458 ],
7459 cx,
7460 );
7461 view.cut(&Cut, cx);
7462 assert_eq!(
7463 view.display_text(cx),
7464 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7465 );
7466 });
7467
7468 // Paste with three selections, noticing how the copied selection that was full-line
7469 // gets inserted before the second cursor.
7470 view.update(cx, |view, cx| {
7471 view.select_display_ranges(
7472 &[
7473 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7474 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7475 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7476 ],
7477 cx,
7478 );
7479 view.paste(&Paste, cx);
7480 assert_eq!(
7481 view.display_text(cx),
7482 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7483 );
7484 assert_eq!(
7485 view.selected_display_ranges(cx),
7486 &[
7487 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7488 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7489 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7490 ]
7491 );
7492 });
7493
7494 // Copy with a single cursor only, which writes the whole line into the clipboard.
7495 view.update(cx, |view, cx| {
7496 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7497 view.copy(&Copy, cx);
7498 });
7499
7500 // Paste with three selections, noticing how the copied full-line selection is inserted
7501 // before the empty selections but replaces the selection that is non-empty.
7502 view.update(cx, |view, cx| {
7503 view.select_display_ranges(
7504 &[
7505 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7506 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7507 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7508 ],
7509 cx,
7510 );
7511 view.paste(&Paste, cx);
7512 assert_eq!(
7513 view.display_text(cx),
7514 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7515 );
7516 assert_eq!(
7517 view.selected_display_ranges(cx),
7518 &[
7519 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7520 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7521 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7522 ]
7523 );
7524 });
7525 }
7526
7527 #[gpui::test]
7528 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7529 populate_settings(cx);
7530 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7531 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7532 view.update(cx, |view, cx| {
7533 view.select_all(&SelectAll, cx);
7534 assert_eq!(
7535 view.selected_display_ranges(cx),
7536 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7537 );
7538 });
7539 }
7540
7541 #[gpui::test]
7542 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7543 populate_settings(cx);
7544 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7545 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7546 view.update(cx, |view, cx| {
7547 view.select_display_ranges(
7548 &[
7549 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7550 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7551 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7552 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7553 ],
7554 cx,
7555 );
7556 view.select_line(&SelectLine, cx);
7557 assert_eq!(
7558 view.selected_display_ranges(cx),
7559 vec![
7560 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7561 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7562 ]
7563 );
7564 });
7565
7566 view.update(cx, |view, cx| {
7567 view.select_line(&SelectLine, cx);
7568 assert_eq!(
7569 view.selected_display_ranges(cx),
7570 vec![
7571 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7572 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7573 ]
7574 );
7575 });
7576
7577 view.update(cx, |view, cx| {
7578 view.select_line(&SelectLine, cx);
7579 assert_eq!(
7580 view.selected_display_ranges(cx),
7581 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7582 );
7583 });
7584 }
7585
7586 #[gpui::test]
7587 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7588 populate_settings(cx);
7589 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7590 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7591 view.update(cx, |view, cx| {
7592 view.fold_ranges(
7593 vec![
7594 Point::new(0, 2)..Point::new(1, 2),
7595 Point::new(2, 3)..Point::new(4, 1),
7596 Point::new(7, 0)..Point::new(8, 4),
7597 ],
7598 cx,
7599 );
7600 view.select_display_ranges(
7601 &[
7602 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7603 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7604 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7605 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7606 ],
7607 cx,
7608 );
7609 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7610 });
7611
7612 view.update(cx, |view, cx| {
7613 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7614 assert_eq!(
7615 view.display_text(cx),
7616 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7617 );
7618 assert_eq!(
7619 view.selected_display_ranges(cx),
7620 [
7621 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7622 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7623 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7624 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7625 ]
7626 );
7627 });
7628
7629 view.update(cx, |view, cx| {
7630 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7631 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7632 assert_eq!(
7633 view.display_text(cx),
7634 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7635 );
7636 assert_eq!(
7637 view.selected_display_ranges(cx),
7638 [
7639 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7640 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7641 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7642 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7643 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7644 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7645 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7646 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7647 ]
7648 );
7649 });
7650 }
7651
7652 #[gpui::test]
7653 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7654 populate_settings(cx);
7655 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7656 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7657
7658 view.update(cx, |view, cx| {
7659 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7660 });
7661 view.update(cx, |view, cx| {
7662 view.add_selection_above(&AddSelectionAbove, cx);
7663 assert_eq!(
7664 view.selected_display_ranges(cx),
7665 vec![
7666 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7667 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7668 ]
7669 );
7670 });
7671
7672 view.update(cx, |view, cx| {
7673 view.add_selection_above(&AddSelectionAbove, cx);
7674 assert_eq!(
7675 view.selected_display_ranges(cx),
7676 vec![
7677 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7678 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7679 ]
7680 );
7681 });
7682
7683 view.update(cx, |view, cx| {
7684 view.add_selection_below(&AddSelectionBelow, cx);
7685 assert_eq!(
7686 view.selected_display_ranges(cx),
7687 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7688 );
7689 });
7690
7691 view.update(cx, |view, cx| {
7692 view.add_selection_below(&AddSelectionBelow, cx);
7693 assert_eq!(
7694 view.selected_display_ranges(cx),
7695 vec![
7696 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7697 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7698 ]
7699 );
7700 });
7701
7702 view.update(cx, |view, cx| {
7703 view.add_selection_below(&AddSelectionBelow, cx);
7704 assert_eq!(
7705 view.selected_display_ranges(cx),
7706 vec![
7707 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7708 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7709 ]
7710 );
7711 });
7712
7713 view.update(cx, |view, cx| {
7714 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7715 });
7716 view.update(cx, |view, cx| {
7717 view.add_selection_below(&AddSelectionBelow, cx);
7718 assert_eq!(
7719 view.selected_display_ranges(cx),
7720 vec![
7721 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7722 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7723 ]
7724 );
7725 });
7726
7727 view.update(cx, |view, cx| {
7728 view.add_selection_below(&AddSelectionBelow, cx);
7729 assert_eq!(
7730 view.selected_display_ranges(cx),
7731 vec![
7732 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7733 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7734 ]
7735 );
7736 });
7737
7738 view.update(cx, |view, cx| {
7739 view.add_selection_above(&AddSelectionAbove, cx);
7740 assert_eq!(
7741 view.selected_display_ranges(cx),
7742 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7743 );
7744 });
7745
7746 view.update(cx, |view, cx| {
7747 view.add_selection_above(&AddSelectionAbove, cx);
7748 assert_eq!(
7749 view.selected_display_ranges(cx),
7750 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7751 );
7752 });
7753
7754 view.update(cx, |view, cx| {
7755 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7756 view.add_selection_below(&AddSelectionBelow, cx);
7757 assert_eq!(
7758 view.selected_display_ranges(cx),
7759 vec![
7760 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7761 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7762 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7763 ]
7764 );
7765 });
7766
7767 view.update(cx, |view, cx| {
7768 view.add_selection_below(&AddSelectionBelow, cx);
7769 assert_eq!(
7770 view.selected_display_ranges(cx),
7771 vec![
7772 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7773 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7774 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7775 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7776 ]
7777 );
7778 });
7779
7780 view.update(cx, |view, cx| {
7781 view.add_selection_above(&AddSelectionAbove, cx);
7782 assert_eq!(
7783 view.selected_display_ranges(cx),
7784 vec![
7785 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7786 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7787 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7788 ]
7789 );
7790 });
7791
7792 view.update(cx, |view, cx| {
7793 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7794 });
7795 view.update(cx, |view, cx| {
7796 view.add_selection_above(&AddSelectionAbove, cx);
7797 assert_eq!(
7798 view.selected_display_ranges(cx),
7799 vec![
7800 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7801 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7802 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7803 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7804 ]
7805 );
7806 });
7807
7808 view.update(cx, |view, cx| {
7809 view.add_selection_below(&AddSelectionBelow, cx);
7810 assert_eq!(
7811 view.selected_display_ranges(cx),
7812 vec![
7813 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7814 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7815 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7816 ]
7817 );
7818 });
7819 }
7820
7821 #[gpui::test]
7822 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7823 cx.update(populate_settings);
7824 let language = Arc::new(Language::new(
7825 LanguageConfig::default(),
7826 Some(tree_sitter_rust::language()),
7827 ));
7828
7829 let text = r#"
7830 use mod1::mod2::{mod3, mod4};
7831
7832 fn fn_1(param1: bool, param2: &str) {
7833 let var1 = "text";
7834 }
7835 "#
7836 .unindent();
7837
7838 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7839 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7840 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7841 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7842 .await;
7843
7844 view.update(cx, |view, cx| {
7845 view.select_display_ranges(
7846 &[
7847 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7848 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7849 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7850 ],
7851 cx,
7852 );
7853 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7854 });
7855 assert_eq!(
7856 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7857 &[
7858 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7859 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7860 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7861 ]
7862 );
7863
7864 view.update(cx, |view, cx| {
7865 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7866 });
7867 assert_eq!(
7868 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7869 &[
7870 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7871 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7872 ]
7873 );
7874
7875 view.update(cx, |view, cx| {
7876 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7877 });
7878 assert_eq!(
7879 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7880 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7881 );
7882
7883 // Trying to expand the selected syntax node one more time has no effect.
7884 view.update(cx, |view, cx| {
7885 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7886 });
7887 assert_eq!(
7888 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7889 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7890 );
7891
7892 view.update(cx, |view, cx| {
7893 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7894 });
7895 assert_eq!(
7896 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7897 &[
7898 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7899 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7900 ]
7901 );
7902
7903 view.update(cx, |view, cx| {
7904 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7905 });
7906 assert_eq!(
7907 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7908 &[
7909 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7910 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7911 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7912 ]
7913 );
7914
7915 view.update(cx, |view, cx| {
7916 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7917 });
7918 assert_eq!(
7919 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7920 &[
7921 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7922 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7923 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7924 ]
7925 );
7926
7927 // Trying to shrink the selected syntax node one more time has no effect.
7928 view.update(cx, |view, cx| {
7929 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7930 });
7931 assert_eq!(
7932 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7933 &[
7934 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7935 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7936 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7937 ]
7938 );
7939
7940 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7941 // a fold.
7942 view.update(cx, |view, cx| {
7943 view.fold_ranges(
7944 vec![
7945 Point::new(0, 21)..Point::new(0, 24),
7946 Point::new(3, 20)..Point::new(3, 22),
7947 ],
7948 cx,
7949 );
7950 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7951 });
7952 assert_eq!(
7953 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7954 &[
7955 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7956 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7957 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7958 ]
7959 );
7960 }
7961
7962 #[gpui::test]
7963 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
7964 cx.update(populate_settings);
7965 let language = Arc::new(
7966 Language::new(
7967 LanguageConfig {
7968 brackets: vec![
7969 BracketPair {
7970 start: "{".to_string(),
7971 end: "}".to_string(),
7972 close: false,
7973 newline: true,
7974 },
7975 BracketPair {
7976 start: "(".to_string(),
7977 end: ")".to_string(),
7978 close: false,
7979 newline: true,
7980 },
7981 ],
7982 ..Default::default()
7983 },
7984 Some(tree_sitter_rust::language()),
7985 )
7986 .with_indents_query(
7987 r#"
7988 (_ "(" ")" @end) @indent
7989 (_ "{" "}" @end) @indent
7990 "#,
7991 )
7992 .unwrap(),
7993 );
7994
7995 let text = "fn a() {}";
7996
7997 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7998 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7999 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8000 editor
8001 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8002 .await;
8003
8004 editor.update(cx, |editor, cx| {
8005 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8006 editor.newline(&Newline, cx);
8007 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8008 assert_eq!(
8009 editor.selected_ranges(cx),
8010 &[
8011 Point::new(1, 4)..Point::new(1, 4),
8012 Point::new(3, 4)..Point::new(3, 4),
8013 Point::new(5, 0)..Point::new(5, 0)
8014 ]
8015 );
8016 });
8017 }
8018
8019 #[gpui::test]
8020 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8021 cx.update(populate_settings);
8022 let language = Arc::new(Language::new(
8023 LanguageConfig {
8024 brackets: vec![
8025 BracketPair {
8026 start: "{".to_string(),
8027 end: "}".to_string(),
8028 close: true,
8029 newline: true,
8030 },
8031 BracketPair {
8032 start: "/*".to_string(),
8033 end: " */".to_string(),
8034 close: true,
8035 newline: true,
8036 },
8037 ],
8038 autoclose_before: "})]".to_string(),
8039 ..Default::default()
8040 },
8041 Some(tree_sitter_rust::language()),
8042 ));
8043
8044 let text = r#"
8045 a
8046
8047 /
8048
8049 "#
8050 .unindent();
8051
8052 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8053 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8054 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8055 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8056 .await;
8057
8058 view.update(cx, |view, cx| {
8059 view.select_display_ranges(
8060 &[
8061 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8062 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8063 ],
8064 cx,
8065 );
8066
8067 view.handle_input(&Input("{".to_string()), cx);
8068 view.handle_input(&Input("{".to_string()), cx);
8069 view.handle_input(&Input("{".to_string()), cx);
8070 assert_eq!(
8071 view.text(cx),
8072 "
8073 {{{}}}
8074 {{{}}}
8075 /
8076
8077 "
8078 .unindent()
8079 );
8080
8081 view.move_right(&MoveRight, cx);
8082 view.handle_input(&Input("}".to_string()), cx);
8083 view.handle_input(&Input("}".to_string()), cx);
8084 view.handle_input(&Input("}".to_string()), cx);
8085 assert_eq!(
8086 view.text(cx),
8087 "
8088 {{{}}}}
8089 {{{}}}}
8090 /
8091
8092 "
8093 .unindent()
8094 );
8095
8096 view.undo(&Undo, cx);
8097 view.handle_input(&Input("/".to_string()), cx);
8098 view.handle_input(&Input("*".to_string()), cx);
8099 assert_eq!(
8100 view.text(cx),
8101 "
8102 /* */
8103 /* */
8104 /
8105
8106 "
8107 .unindent()
8108 );
8109
8110 view.undo(&Undo, cx);
8111 view.select_display_ranges(
8112 &[
8113 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8114 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8115 ],
8116 cx,
8117 );
8118 view.handle_input(&Input("*".to_string()), cx);
8119 assert_eq!(
8120 view.text(cx),
8121 "
8122 a
8123
8124 /*
8125 *
8126 "
8127 .unindent()
8128 );
8129
8130 // Don't autoclose if the next character isn't whitespace and isn't
8131 // listed in the language's "autoclose_before" section.
8132 view.finalize_last_transaction(cx);
8133 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8134 view.handle_input(&Input("{".to_string()), cx);
8135 assert_eq!(
8136 view.text(cx),
8137 "
8138 {a
8139
8140 /*
8141 *
8142 "
8143 .unindent()
8144 );
8145
8146 view.undo(&Undo, cx);
8147 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8148 view.handle_input(&Input("{".to_string()), cx);
8149 assert_eq!(
8150 view.text(cx),
8151 "
8152 {a}
8153
8154 /*
8155 *
8156 "
8157 .unindent()
8158 );
8159 assert_eq!(
8160 view.selected_display_ranges(cx),
8161 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8162 );
8163 });
8164 }
8165
8166 #[gpui::test]
8167 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8168 cx.update(populate_settings);
8169
8170 let text = "
8171 a. b
8172 a. b
8173 a. b
8174 "
8175 .unindent();
8176 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8177 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8178
8179 editor.update(cx, |editor, cx| {
8180 let buffer = &editor.snapshot(cx).buffer_snapshot;
8181 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8182 let insertion_ranges = [
8183 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8184 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8185 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8186 ];
8187
8188 editor
8189 .insert_snippet(&insertion_ranges, snippet, cx)
8190 .unwrap();
8191 assert_eq!(
8192 editor.text(cx),
8193 "
8194 a.f(one, two, three) b
8195 a.f(one, two, three) b
8196 a.f(one, two, three) b
8197 "
8198 .unindent()
8199 );
8200 assert_eq!(
8201 editor.selected_ranges::<Point>(cx),
8202 &[
8203 Point::new(0, 4)..Point::new(0, 7),
8204 Point::new(0, 14)..Point::new(0, 19),
8205 Point::new(1, 4)..Point::new(1, 7),
8206 Point::new(1, 14)..Point::new(1, 19),
8207 Point::new(2, 4)..Point::new(2, 7),
8208 Point::new(2, 14)..Point::new(2, 19),
8209 ]
8210 );
8211
8212 // Can't move earlier than the first tab stop
8213 editor.move_to_prev_snippet_tabstop(cx);
8214 assert_eq!(
8215 editor.selected_ranges::<Point>(cx),
8216 &[
8217 Point::new(0, 4)..Point::new(0, 7),
8218 Point::new(0, 14)..Point::new(0, 19),
8219 Point::new(1, 4)..Point::new(1, 7),
8220 Point::new(1, 14)..Point::new(1, 19),
8221 Point::new(2, 4)..Point::new(2, 7),
8222 Point::new(2, 14)..Point::new(2, 19),
8223 ]
8224 );
8225
8226 assert!(editor.move_to_next_snippet_tabstop(cx));
8227 assert_eq!(
8228 editor.selected_ranges::<Point>(cx),
8229 &[
8230 Point::new(0, 9)..Point::new(0, 12),
8231 Point::new(1, 9)..Point::new(1, 12),
8232 Point::new(2, 9)..Point::new(2, 12)
8233 ]
8234 );
8235
8236 editor.move_to_prev_snippet_tabstop(cx);
8237 assert_eq!(
8238 editor.selected_ranges::<Point>(cx),
8239 &[
8240 Point::new(0, 4)..Point::new(0, 7),
8241 Point::new(0, 14)..Point::new(0, 19),
8242 Point::new(1, 4)..Point::new(1, 7),
8243 Point::new(1, 14)..Point::new(1, 19),
8244 Point::new(2, 4)..Point::new(2, 7),
8245 Point::new(2, 14)..Point::new(2, 19),
8246 ]
8247 );
8248
8249 assert!(editor.move_to_next_snippet_tabstop(cx));
8250 assert!(editor.move_to_next_snippet_tabstop(cx));
8251 assert_eq!(
8252 editor.selected_ranges::<Point>(cx),
8253 &[
8254 Point::new(0, 20)..Point::new(0, 20),
8255 Point::new(1, 20)..Point::new(1, 20),
8256 Point::new(2, 20)..Point::new(2, 20)
8257 ]
8258 );
8259
8260 // As soon as the last tab stop is reached, snippet state is gone
8261 editor.move_to_prev_snippet_tabstop(cx);
8262 assert_eq!(
8263 editor.selected_ranges::<Point>(cx),
8264 &[
8265 Point::new(0, 20)..Point::new(0, 20),
8266 Point::new(1, 20)..Point::new(1, 20),
8267 Point::new(2, 20)..Point::new(2, 20)
8268 ]
8269 );
8270 });
8271 }
8272
8273 #[gpui::test]
8274 async fn test_completion(cx: &mut gpui::TestAppContext) {
8275 cx.update(populate_settings);
8276
8277 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8278 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8279 completion_provider: Some(lsp::CompletionOptions {
8280 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8281 ..Default::default()
8282 }),
8283 ..Default::default()
8284 });
8285 let language = Arc::new(Language::new(
8286 LanguageConfig {
8287 name: "Rust".into(),
8288 path_suffixes: vec!["rs".to_string()],
8289 language_server: Some(language_server_config),
8290 ..Default::default()
8291 },
8292 Some(tree_sitter_rust::language()),
8293 ));
8294
8295 let text = "
8296 one
8297 two
8298 three
8299 "
8300 .unindent();
8301
8302 let fs = FakeFs::new(cx.background().clone());
8303 fs.insert_file("/file.rs", text).await;
8304
8305 let project = Project::test(fs, cx);
8306 project.update(cx, |project, _| project.languages().add(language));
8307
8308 let worktree_id = project
8309 .update(cx, |project, cx| {
8310 project.find_or_create_local_worktree("/file.rs", true, cx)
8311 })
8312 .await
8313 .unwrap()
8314 .0
8315 .read_with(cx, |tree, _| tree.id());
8316 let buffer = project
8317 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8318 .await
8319 .unwrap();
8320 let mut fake_server = fake_servers.next().await.unwrap();
8321
8322 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8323 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8324
8325 editor.update(cx, |editor, cx| {
8326 editor.project = Some(project);
8327 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8328 editor.handle_input(&Input(".".to_string()), cx);
8329 });
8330
8331 handle_completion_request(
8332 &mut fake_server,
8333 "/file.rs",
8334 Point::new(0, 4),
8335 vec![
8336 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8337 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8338 ],
8339 )
8340 .await;
8341 editor
8342 .condition(&cx, |editor, _| editor.context_menu_visible())
8343 .await;
8344
8345 let apply_additional_edits = editor.update(cx, |editor, cx| {
8346 editor.move_down(&MoveDown, cx);
8347 let apply_additional_edits = editor
8348 .confirm_completion(&ConfirmCompletion(None), cx)
8349 .unwrap();
8350 assert_eq!(
8351 editor.text(cx),
8352 "
8353 one.second_completion
8354 two
8355 three
8356 "
8357 .unindent()
8358 );
8359 apply_additional_edits
8360 });
8361
8362 handle_resolve_completion_request(
8363 &mut fake_server,
8364 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8365 )
8366 .await;
8367 apply_additional_edits.await.unwrap();
8368 assert_eq!(
8369 editor.read_with(cx, |editor, cx| editor.text(cx)),
8370 "
8371 one.second_completion
8372 two
8373 three
8374 additional edit
8375 "
8376 .unindent()
8377 );
8378
8379 editor.update(cx, |editor, cx| {
8380 editor.select_ranges(
8381 [
8382 Point::new(1, 3)..Point::new(1, 3),
8383 Point::new(2, 5)..Point::new(2, 5),
8384 ],
8385 None,
8386 cx,
8387 );
8388
8389 editor.handle_input(&Input(" ".to_string()), cx);
8390 assert!(editor.context_menu.is_none());
8391 editor.handle_input(&Input("s".to_string()), cx);
8392 assert!(editor.context_menu.is_none());
8393 });
8394
8395 handle_completion_request(
8396 &mut fake_server,
8397 "/file.rs",
8398 Point::new(2, 7),
8399 vec![
8400 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8401 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8402 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8403 ],
8404 )
8405 .await;
8406 editor
8407 .condition(&cx, |editor, _| editor.context_menu_visible())
8408 .await;
8409
8410 editor.update(cx, |editor, cx| {
8411 editor.handle_input(&Input("i".to_string()), cx);
8412 });
8413
8414 handle_completion_request(
8415 &mut fake_server,
8416 "/file.rs",
8417 Point::new(2, 8),
8418 vec![
8419 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8420 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8421 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8422 ],
8423 )
8424 .await;
8425 editor
8426 .condition(&cx, |editor, _| editor.context_menu_visible())
8427 .await;
8428
8429 let apply_additional_edits = editor.update(cx, |editor, cx| {
8430 let apply_additional_edits = editor
8431 .confirm_completion(&ConfirmCompletion(None), cx)
8432 .unwrap();
8433 assert_eq!(
8434 editor.text(cx),
8435 "
8436 one.second_completion
8437 two sixth_completion
8438 three sixth_completion
8439 additional edit
8440 "
8441 .unindent()
8442 );
8443 apply_additional_edits
8444 });
8445 handle_resolve_completion_request(&mut fake_server, None).await;
8446 apply_additional_edits.await.unwrap();
8447
8448 async fn handle_completion_request(
8449 fake: &mut FakeLanguageServer,
8450 path: &'static str,
8451 position: Point,
8452 completions: Vec<(Range<Point>, &'static str)>,
8453 ) {
8454 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8455 assert_eq!(
8456 params.text_document_position.text_document.uri,
8457 lsp::Url::from_file_path(path).unwrap()
8458 );
8459 assert_eq!(
8460 params.text_document_position.position,
8461 lsp::Position::new(position.row, position.column)
8462 );
8463 Some(lsp::CompletionResponse::Array(
8464 completions
8465 .iter()
8466 .map(|(range, new_text)| lsp::CompletionItem {
8467 label: new_text.to_string(),
8468 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8469 range: lsp::Range::new(
8470 lsp::Position::new(range.start.row, range.start.column),
8471 lsp::Position::new(range.start.row, range.start.column),
8472 ),
8473 new_text: new_text.to_string(),
8474 })),
8475 ..Default::default()
8476 })
8477 .collect(),
8478 ))
8479 })
8480 .next()
8481 .await;
8482 }
8483
8484 async fn handle_resolve_completion_request(
8485 fake: &mut FakeLanguageServer,
8486 edit: Option<(Range<Point>, &'static str)>,
8487 ) {
8488 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8489 lsp::CompletionItem {
8490 additional_text_edits: edit.clone().map(|(range, new_text)| {
8491 vec![lsp::TextEdit::new(
8492 lsp::Range::new(
8493 lsp::Position::new(range.start.row, range.start.column),
8494 lsp::Position::new(range.end.row, range.end.column),
8495 ),
8496 new_text.to_string(),
8497 )]
8498 }),
8499 ..Default::default()
8500 }
8501 })
8502 .next()
8503 .await;
8504 }
8505 }
8506
8507 #[gpui::test]
8508 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8509 cx.update(populate_settings);
8510 let language = Arc::new(Language::new(
8511 LanguageConfig {
8512 line_comment: Some("// ".to_string()),
8513 ..Default::default()
8514 },
8515 Some(tree_sitter_rust::language()),
8516 ));
8517
8518 let text = "
8519 fn a() {
8520 //b();
8521 // c();
8522 // d();
8523 }
8524 "
8525 .unindent();
8526
8527 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8528 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8529 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8530
8531 view.update(cx, |editor, cx| {
8532 // If multiple selections intersect a line, the line is only
8533 // toggled once.
8534 editor.select_display_ranges(
8535 &[
8536 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8537 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8538 ],
8539 cx,
8540 );
8541 editor.toggle_comments(&ToggleComments, cx);
8542 assert_eq!(
8543 editor.text(cx),
8544 "
8545 fn a() {
8546 b();
8547 c();
8548 d();
8549 }
8550 "
8551 .unindent()
8552 );
8553
8554 // The comment prefix is inserted at the same column for every line
8555 // in a selection.
8556 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8557 editor.toggle_comments(&ToggleComments, cx);
8558 assert_eq!(
8559 editor.text(cx),
8560 "
8561 fn a() {
8562 // b();
8563 // c();
8564 // d();
8565 }
8566 "
8567 .unindent()
8568 );
8569
8570 // If a selection ends at the beginning of a line, that line is not toggled.
8571 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8572 editor.toggle_comments(&ToggleComments, cx);
8573 assert_eq!(
8574 editor.text(cx),
8575 "
8576 fn a() {
8577 // b();
8578 c();
8579 // d();
8580 }
8581 "
8582 .unindent()
8583 );
8584 });
8585 }
8586
8587 #[gpui::test]
8588 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8589 populate_settings(cx);
8590 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8591 let multibuffer = cx.add_model(|cx| {
8592 let mut multibuffer = MultiBuffer::new(0);
8593 multibuffer.push_excerpts(
8594 buffer.clone(),
8595 [
8596 Point::new(0, 0)..Point::new(0, 4),
8597 Point::new(1, 0)..Point::new(1, 4),
8598 ],
8599 cx,
8600 );
8601 multibuffer
8602 });
8603
8604 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8605
8606 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8607 view.update(cx, |view, cx| {
8608 assert_eq!(view.text(cx), "aaaa\nbbbb");
8609 view.select_ranges(
8610 [
8611 Point::new(0, 0)..Point::new(0, 0),
8612 Point::new(1, 0)..Point::new(1, 0),
8613 ],
8614 None,
8615 cx,
8616 );
8617
8618 view.handle_input(&Input("X".to_string()), cx);
8619 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8620 assert_eq!(
8621 view.selected_ranges(cx),
8622 [
8623 Point::new(0, 1)..Point::new(0, 1),
8624 Point::new(1, 1)..Point::new(1, 1),
8625 ]
8626 )
8627 });
8628 }
8629
8630 #[gpui::test]
8631 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8632 populate_settings(cx);
8633 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8634 let multibuffer = cx.add_model(|cx| {
8635 let mut multibuffer = MultiBuffer::new(0);
8636 multibuffer.push_excerpts(
8637 buffer,
8638 [
8639 Point::new(0, 0)..Point::new(1, 4),
8640 Point::new(1, 0)..Point::new(2, 4),
8641 ],
8642 cx,
8643 );
8644 multibuffer
8645 });
8646
8647 assert_eq!(
8648 multibuffer.read(cx).read(cx).text(),
8649 "aaaa\nbbbb\nbbbb\ncccc"
8650 );
8651
8652 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8653 view.update(cx, |view, cx| {
8654 view.select_ranges(
8655 [
8656 Point::new(1, 1)..Point::new(1, 1),
8657 Point::new(2, 3)..Point::new(2, 3),
8658 ],
8659 None,
8660 cx,
8661 );
8662
8663 view.handle_input(&Input("X".to_string()), cx);
8664 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8665 assert_eq!(
8666 view.selected_ranges(cx),
8667 [
8668 Point::new(1, 2)..Point::new(1, 2),
8669 Point::new(2, 5)..Point::new(2, 5),
8670 ]
8671 );
8672
8673 view.newline(&Newline, cx);
8674 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8675 assert_eq!(
8676 view.selected_ranges(cx),
8677 [
8678 Point::new(2, 0)..Point::new(2, 0),
8679 Point::new(6, 0)..Point::new(6, 0),
8680 ]
8681 );
8682 });
8683 }
8684
8685 #[gpui::test]
8686 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8687 populate_settings(cx);
8688 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8689 let mut excerpt1_id = None;
8690 let multibuffer = cx.add_model(|cx| {
8691 let mut multibuffer = MultiBuffer::new(0);
8692 excerpt1_id = multibuffer
8693 .push_excerpts(
8694 buffer.clone(),
8695 [
8696 Point::new(0, 0)..Point::new(1, 4),
8697 Point::new(1, 0)..Point::new(2, 4),
8698 ],
8699 cx,
8700 )
8701 .into_iter()
8702 .next();
8703 multibuffer
8704 });
8705 assert_eq!(
8706 multibuffer.read(cx).read(cx).text(),
8707 "aaaa\nbbbb\nbbbb\ncccc"
8708 );
8709 let (_, editor) = cx.add_window(Default::default(), |cx| {
8710 let mut editor = build_editor(multibuffer.clone(), cx);
8711 editor.select_ranges(
8712 [
8713 Point::new(1, 3)..Point::new(1, 3),
8714 Point::new(2, 1)..Point::new(2, 1),
8715 ],
8716 None,
8717 cx,
8718 );
8719 editor
8720 });
8721
8722 // Refreshing selections is a no-op when excerpts haven't changed.
8723 editor.update(cx, |editor, cx| {
8724 editor.refresh_selections(cx);
8725 assert_eq!(
8726 editor.selected_ranges(cx),
8727 [
8728 Point::new(1, 3)..Point::new(1, 3),
8729 Point::new(2, 1)..Point::new(2, 1),
8730 ]
8731 );
8732 });
8733
8734 multibuffer.update(cx, |multibuffer, cx| {
8735 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8736 });
8737 editor.update(cx, |editor, cx| {
8738 // Removing an excerpt causes the first selection to become degenerate.
8739 assert_eq!(
8740 editor.selected_ranges(cx),
8741 [
8742 Point::new(0, 0)..Point::new(0, 0),
8743 Point::new(0, 1)..Point::new(0, 1)
8744 ]
8745 );
8746
8747 // Refreshing selections will relocate the first selection to the original buffer
8748 // location.
8749 editor.refresh_selections(cx);
8750 assert_eq!(
8751 editor.selected_ranges(cx),
8752 [
8753 Point::new(0, 1)..Point::new(0, 1),
8754 Point::new(0, 3)..Point::new(0, 3)
8755 ]
8756 );
8757 });
8758 }
8759
8760 #[gpui::test]
8761 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8762 cx.update(populate_settings);
8763 let language = Arc::new(Language::new(
8764 LanguageConfig {
8765 brackets: vec![
8766 BracketPair {
8767 start: "{".to_string(),
8768 end: "}".to_string(),
8769 close: true,
8770 newline: true,
8771 },
8772 BracketPair {
8773 start: "/* ".to_string(),
8774 end: " */".to_string(),
8775 close: true,
8776 newline: true,
8777 },
8778 ],
8779 ..Default::default()
8780 },
8781 Some(tree_sitter_rust::language()),
8782 ));
8783
8784 let text = concat!(
8785 "{ }\n", // Suppress rustfmt
8786 " x\n", //
8787 " /* */\n", //
8788 "x\n", //
8789 "{{} }\n", //
8790 );
8791
8792 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8793 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8794 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8795 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8796 .await;
8797
8798 view.update(cx, |view, cx| {
8799 view.select_display_ranges(
8800 &[
8801 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8802 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8803 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8804 ],
8805 cx,
8806 );
8807 view.newline(&Newline, cx);
8808
8809 assert_eq!(
8810 view.buffer().read(cx).read(cx).text(),
8811 concat!(
8812 "{ \n", // Suppress rustfmt
8813 "\n", //
8814 "}\n", //
8815 " x\n", //
8816 " /* \n", //
8817 " \n", //
8818 " */\n", //
8819 "x\n", //
8820 "{{} \n", //
8821 "}\n", //
8822 )
8823 );
8824 });
8825 }
8826
8827 #[gpui::test]
8828 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8829 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8830 populate_settings(cx);
8831 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
8832
8833 editor.update(cx, |editor, cx| {
8834 struct Type1;
8835 struct Type2;
8836
8837 let buffer = buffer.read(cx).snapshot(cx);
8838
8839 let anchor_range = |range: Range<Point>| {
8840 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8841 };
8842
8843 editor.highlight_background::<Type1>(
8844 vec![
8845 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8846 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8847 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8848 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8849 ],
8850 Color::red(),
8851 cx,
8852 );
8853 editor.highlight_background::<Type2>(
8854 vec![
8855 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8856 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8857 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8858 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8859 ],
8860 Color::green(),
8861 cx,
8862 );
8863
8864 let snapshot = editor.snapshot(cx);
8865 let mut highlighted_ranges = editor.background_highlights_in_range(
8866 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8867 &snapshot,
8868 );
8869 // Enforce a consistent ordering based on color without relying on the ordering of the
8870 // highlight's `TypeId` which is non-deterministic.
8871 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8872 assert_eq!(
8873 highlighted_ranges,
8874 &[
8875 (
8876 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8877 Color::green(),
8878 ),
8879 (
8880 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8881 Color::green(),
8882 ),
8883 (
8884 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8885 Color::red(),
8886 ),
8887 (
8888 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8889 Color::red(),
8890 ),
8891 ]
8892 );
8893 assert_eq!(
8894 editor.background_highlights_in_range(
8895 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8896 &snapshot,
8897 ),
8898 &[(
8899 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8900 Color::red(),
8901 )]
8902 );
8903 });
8904 }
8905
8906 #[test]
8907 fn test_combine_syntax_and_fuzzy_match_highlights() {
8908 let string = "abcdefghijklmnop";
8909 let syntax_ranges = [
8910 (
8911 0..3,
8912 HighlightStyle {
8913 color: Some(Color::red()),
8914 ..Default::default()
8915 },
8916 ),
8917 (
8918 4..8,
8919 HighlightStyle {
8920 color: Some(Color::green()),
8921 ..Default::default()
8922 },
8923 ),
8924 ];
8925 let match_indices = [4, 6, 7, 8];
8926 assert_eq!(
8927 combine_syntax_and_fuzzy_match_highlights(
8928 &string,
8929 Default::default(),
8930 syntax_ranges.into_iter(),
8931 &match_indices,
8932 ),
8933 &[
8934 (
8935 0..3,
8936 HighlightStyle {
8937 color: Some(Color::red()),
8938 ..Default::default()
8939 },
8940 ),
8941 (
8942 4..5,
8943 HighlightStyle {
8944 color: Some(Color::green()),
8945 weight: Some(fonts::Weight::BOLD),
8946 ..Default::default()
8947 },
8948 ),
8949 (
8950 5..6,
8951 HighlightStyle {
8952 color: Some(Color::green()),
8953 ..Default::default()
8954 },
8955 ),
8956 (
8957 6..8,
8958 HighlightStyle {
8959 color: Some(Color::green()),
8960 weight: Some(fonts::Weight::BOLD),
8961 ..Default::default()
8962 },
8963 ),
8964 (
8965 8..9,
8966 HighlightStyle {
8967 weight: Some(fonts::Weight::BOLD),
8968 ..Default::default()
8969 },
8970 ),
8971 ]
8972 );
8973 }
8974
8975 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8976 let point = DisplayPoint::new(row as u32, column as u32);
8977 point..point
8978 }
8979
8980 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
8981 Editor::new(EditorMode::Full, buffer, None, None, cx)
8982 }
8983
8984 fn populate_settings(cx: &mut gpui::MutableAppContext) {
8985 let settings = Settings::test(cx);
8986 cx.set_global(settings);
8987 }
8988
8989 fn assert_selection_ranges(
8990 marked_text: &str,
8991 selection_marker_pairs: Vec<(char, char)>,
8992 view: &mut Editor,
8993 cx: &mut ViewContext<Editor>,
8994 ) {
8995 let snapshot = view.snapshot(cx).display_snapshot;
8996 let mut marker_chars = Vec::new();
8997 for (start, end) in selection_marker_pairs.iter() {
8998 marker_chars.push(*start);
8999 marker_chars.push(*end);
9000 }
9001 let (_, markers) = marked_text_by(marked_text, marker_chars);
9002 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9003 .iter()
9004 .map(|(start, end)| {
9005 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9006 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9007 start..end
9008 })
9009 .collect();
9010 assert_eq!(
9011 view.selected_display_ranges(cx),
9012 &asserted_ranges[..],
9013 "Assert selections are {}",
9014 marked_text
9015 );
9016 }
9017}
9018
9019trait RangeExt<T> {
9020 fn sorted(&self) -> Range<T>;
9021 fn to_inclusive(&self) -> RangeInclusive<T>;
9022}
9023
9024impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9025 fn sorted(&self) -> Self {
9026 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9027 }
9028
9029 fn to_inclusive(&self) -> RangeInclusive<T> {
9030 self.start.clone()..=self.end.clone()
9031 }
9032}