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