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