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