1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33pub use language::{char_kind, CharKind};
34use language::{
35 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
36 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
37};
38use multi_buffer::MultiBufferChunks;
39pub use multi_buffer::{
40 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use 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.searchable = self.searchable;
854 clone
855 }
856
857 fn new(
858 mode: EditorMode,
859 buffer: ModelHandle<MultiBuffer>,
860 project: Option<ModelHandle<Project>>,
861 settings: watch::Receiver<Settings>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = settings.borrow();
867 let style = build_style(&*settings, get_field_editor_theme, cx);
868 DisplayMap::new(
869 buffer.clone(),
870 settings.tab_size,
871 style.text.font_id,
872 style.text.font_size,
873 None,
874 2,
875 1,
876 cx,
877 )
878 });
879 cx.observe(&buffer, Self::on_buffer_changed).detach();
880 cx.subscribe(&buffer, Self::on_buffer_event).detach();
881 cx.observe(&display_map, Self::on_display_map_changed)
882 .detach();
883
884 let mut this = Self {
885 handle: cx.weak_handle(),
886 buffer,
887 display_map,
888 selections: Arc::from([]),
889 pending_selection: Some(PendingSelection {
890 selection: Selection {
891 id: 0,
892 start: Anchor::min(),
893 end: Anchor::min(),
894 reversed: false,
895 goal: SelectionGoal::None,
896 },
897 mode: SelectMode::Character,
898 }),
899 columnar_selection_tail: None,
900 next_selection_id: 1,
901 add_selections_state: None,
902 select_next_state: None,
903 selection_history: Default::default(),
904 autoclose_stack: Default::default(),
905 snippet_stack: Default::default(),
906 select_larger_syntax_node_stack: Vec::new(),
907 active_diagnostics: None,
908 settings,
909 soft_wrap_mode_override: None,
910 get_field_editor_theme,
911 project,
912 scroll_position: Vector2F::zero(),
913 scroll_top_anchor: None,
914 autoscroll_request: None,
915 focused: false,
916 show_local_cursors: false,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 highlighted_ranges: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 };
934 this.end_selection(cx);
935 this
936 }
937
938 pub fn open_new(
939 workspace: &mut Workspace,
940 _: &workspace::OpenNew,
941 cx: &mut ViewContext<Workspace>,
942 ) {
943 let project = workspace.project();
944 if project.read(cx).is_remote() {
945 cx.propagate_action();
946 } else if let Some(buffer) = project
947 .update(cx, |project, cx| project.create_buffer(cx))
948 .log_err()
949 {
950 workspace.open_item(BufferItemHandle(buffer), cx);
951 }
952 }
953
954 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
955 self.buffer.read(cx).replica_id()
956 }
957
958 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
959 &self.buffer
960 }
961
962 pub fn title(&self, cx: &AppContext) -> String {
963 self.buffer().read(cx).title(cx)
964 }
965
966 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
967 EditorSnapshot {
968 mode: self.mode,
969 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
970 scroll_position: self.scroll_position,
971 scroll_top_anchor: self.scroll_top_anchor.clone(),
972 placeholder_text: self.placeholder_text.clone(),
973 is_focused: self
974 .handle
975 .upgrade(cx)
976 .map_or(false, |handle| handle.is_focused(cx)),
977 }
978 }
979
980 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
981 self.buffer.read(cx).language(cx)
982 }
983
984 fn style(&self, cx: &AppContext) -> EditorStyle {
985 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
986 }
987
988 pub fn set_placeholder_text(
989 &mut self,
990 placeholder_text: impl Into<Arc<str>>,
991 cx: &mut ViewContext<Self>,
992 ) {
993 self.placeholder_text = Some(placeholder_text.into());
994 cx.notify();
995 }
996
997 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
998 self.vertical_scroll_margin = margin_rows as f32;
999 cx.notify();
1000 }
1001
1002 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1003 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1004
1005 if scroll_position.y() == 0. {
1006 self.scroll_top_anchor = None;
1007 self.scroll_position = scroll_position;
1008 } else {
1009 let scroll_top_buffer_offset =
1010 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1011 let anchor = map
1012 .buffer_snapshot
1013 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1014 self.scroll_position = vec2f(
1015 scroll_position.x(),
1016 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1017 );
1018 self.scroll_top_anchor = Some(anchor);
1019 }
1020
1021 cx.notify();
1022 }
1023
1024 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1025 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1026 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1027 }
1028
1029 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1030 if max < self.scroll_position.x() {
1031 self.scroll_position.set_x(max);
1032 true
1033 } else {
1034 false
1035 }
1036 }
1037
1038 pub fn autoscroll_vertically(
1039 &mut self,
1040 viewport_height: f32,
1041 line_height: f32,
1042 cx: &mut ViewContext<Self>,
1043 ) -> bool {
1044 let visible_lines = viewport_height / line_height;
1045 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1046 let mut scroll_position =
1047 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1048 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1049 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1050 } else {
1051 display_map.max_point().row().saturating_sub(1) as f32
1052 };
1053 if scroll_position.y() > max_scroll_top {
1054 scroll_position.set_y(max_scroll_top);
1055 self.set_scroll_position(scroll_position, cx);
1056 }
1057
1058 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1059 autoscroll
1060 } else {
1061 return false;
1062 };
1063
1064 let first_cursor_top;
1065 let last_cursor_bottom;
1066 if let Some(highlighted_rows) = &self.highlighted_rows {
1067 first_cursor_top = highlighted_rows.start as f32;
1068 last_cursor_bottom = first_cursor_top + 1.;
1069 } else if autoscroll == Autoscroll::Newest {
1070 let newest_selection =
1071 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1072 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1073 last_cursor_bottom = first_cursor_top + 1.;
1074 } else {
1075 let selections = self.local_selections::<Point>(cx);
1076 first_cursor_top = selections
1077 .first()
1078 .unwrap()
1079 .head()
1080 .to_display_point(&display_map)
1081 .row() as f32;
1082 last_cursor_bottom = selections
1083 .last()
1084 .unwrap()
1085 .head()
1086 .to_display_point(&display_map)
1087 .row() as f32
1088 + 1.0;
1089 }
1090
1091 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1092 0.
1093 } else {
1094 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1095 };
1096 if margin < 0.0 {
1097 return false;
1098 }
1099
1100 match autoscroll {
1101 Autoscroll::Fit | Autoscroll::Newest => {
1102 let margin = margin.min(self.vertical_scroll_margin);
1103 let target_top = (first_cursor_top - margin).max(0.0);
1104 let target_bottom = last_cursor_bottom + margin;
1105 let start_row = scroll_position.y();
1106 let end_row = start_row + visible_lines;
1107
1108 if target_top < start_row {
1109 scroll_position.set_y(target_top);
1110 self.set_scroll_position(scroll_position, cx);
1111 } else if target_bottom >= end_row {
1112 scroll_position.set_y(target_bottom - visible_lines);
1113 self.set_scroll_position(scroll_position, cx);
1114 }
1115 }
1116 Autoscroll::Center => {
1117 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1118 self.set_scroll_position(scroll_position, cx);
1119 }
1120 }
1121
1122 true
1123 }
1124
1125 pub fn autoscroll_horizontally(
1126 &mut self,
1127 start_row: u32,
1128 viewport_width: f32,
1129 scroll_width: f32,
1130 max_glyph_width: f32,
1131 layouts: &[text_layout::Line],
1132 cx: &mut ViewContext<Self>,
1133 ) -> bool {
1134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1135 let selections = self.local_selections::<Point>(cx);
1136
1137 let mut target_left;
1138 let mut target_right;
1139
1140 if self.highlighted_rows.is_some() {
1141 target_left = 0.0_f32;
1142 target_right = 0.0_f32;
1143 } else {
1144 target_left = std::f32::INFINITY;
1145 target_right = 0.0_f32;
1146 for selection in selections {
1147 let head = selection.head().to_display_point(&display_map);
1148 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1149 let start_column = head.column().saturating_sub(3);
1150 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1151 target_left = target_left.min(
1152 layouts[(head.row() - start_row) as usize]
1153 .x_for_index(start_column as usize),
1154 );
1155 target_right = target_right.max(
1156 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1157 + max_glyph_width,
1158 );
1159 }
1160 }
1161 }
1162
1163 target_right = target_right.min(scroll_width);
1164
1165 if target_right - target_left > viewport_width {
1166 return false;
1167 }
1168
1169 let scroll_left = self.scroll_position.x() * max_glyph_width;
1170 let scroll_right = scroll_left + viewport_width;
1171
1172 if target_left < scroll_left {
1173 self.scroll_position.set_x(target_left / max_glyph_width);
1174 true
1175 } else if target_right > scroll_right {
1176 self.scroll_position
1177 .set_x((target_right - viewport_width) / max_glyph_width);
1178 true
1179 } else {
1180 false
1181 }
1182 }
1183
1184 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1185 self.hide_context_menu(cx);
1186
1187 match phase {
1188 SelectPhase::Begin {
1189 position,
1190 add,
1191 click_count,
1192 } => self.begin_selection(*position, *add, *click_count, cx),
1193 SelectPhase::BeginColumnar {
1194 position,
1195 overshoot,
1196 } => self.begin_columnar_selection(*position, *overshoot, cx),
1197 SelectPhase::Extend {
1198 position,
1199 click_count,
1200 } => self.extend_selection(*position, *click_count, cx),
1201 SelectPhase::Update {
1202 position,
1203 overshoot,
1204 scroll_position,
1205 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1206 SelectPhase::End => self.end_selection(cx),
1207 }
1208 }
1209
1210 fn extend_selection(
1211 &mut self,
1212 position: DisplayPoint,
1213 click_count: usize,
1214 cx: &mut ViewContext<Self>,
1215 ) {
1216 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1217 let tail = self
1218 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1219 .tail();
1220 self.begin_selection(position, false, click_count, cx);
1221
1222 let position = position.to_offset(&display_map, Bias::Left);
1223 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1224 let mut pending = self.pending_selection.clone().unwrap();
1225
1226 if position >= tail {
1227 pending.selection.start = tail_anchor.clone();
1228 } else {
1229 pending.selection.end = tail_anchor.clone();
1230 pending.selection.reversed = true;
1231 }
1232
1233 match &mut pending.mode {
1234 SelectMode::Word(range) | SelectMode::Line(range) => {
1235 *range = tail_anchor.clone()..tail_anchor
1236 }
1237 _ => {}
1238 }
1239
1240 self.set_selections(self.selections.clone(), Some(pending), cx);
1241 }
1242
1243 fn begin_selection(
1244 &mut self,
1245 position: DisplayPoint,
1246 add: bool,
1247 click_count: usize,
1248 cx: &mut ViewContext<Self>,
1249 ) {
1250 if !self.focused {
1251 cx.focus_self();
1252 cx.emit(Event::Activate);
1253 }
1254
1255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1256 let buffer = &display_map.buffer_snapshot;
1257 let newest_selection = self.newest_anchor_selection().clone();
1258
1259 let start;
1260 let end;
1261 let mode;
1262 match click_count {
1263 1 => {
1264 start = buffer.anchor_before(position.to_point(&display_map));
1265 end = start.clone();
1266 mode = SelectMode::Character;
1267 }
1268 2 => {
1269 let range = movement::surrounding_word(&display_map, position);
1270 start = buffer.anchor_before(range.start.to_point(&display_map));
1271 end = buffer.anchor_before(range.end.to_point(&display_map));
1272 mode = SelectMode::Word(start.clone()..end.clone());
1273 }
1274 3 => {
1275 let position = display_map
1276 .clip_point(position, Bias::Left)
1277 .to_point(&display_map);
1278 let line_start = display_map.prev_line_boundary(position).0;
1279 let next_line_start = buffer.clip_point(
1280 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1281 Bias::Left,
1282 );
1283 start = buffer.anchor_before(line_start);
1284 end = buffer.anchor_before(next_line_start);
1285 mode = SelectMode::Line(start.clone()..end.clone());
1286 }
1287 _ => {
1288 start = buffer.anchor_before(0);
1289 end = buffer.anchor_before(buffer.len());
1290 mode = SelectMode::All;
1291 }
1292 }
1293
1294 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1295
1296 let selection = Selection {
1297 id: post_inc(&mut self.next_selection_id),
1298 start,
1299 end,
1300 reversed: false,
1301 goal: SelectionGoal::None,
1302 };
1303
1304 let mut selections;
1305 if add {
1306 selections = self.selections.clone();
1307 // Remove the newest selection if it was added due to a previous mouse up
1308 // within this multi-click.
1309 if click_count > 1 {
1310 selections = self
1311 .selections
1312 .iter()
1313 .filter(|selection| selection.id != newest_selection.id)
1314 .cloned()
1315 .collect();
1316 }
1317 } else {
1318 selections = Arc::from([]);
1319 }
1320 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1321
1322 cx.notify();
1323 }
1324
1325 fn begin_columnar_selection(
1326 &mut self,
1327 position: DisplayPoint,
1328 overshoot: u32,
1329 cx: &mut ViewContext<Self>,
1330 ) {
1331 if !self.focused {
1332 cx.focus_self();
1333 cx.emit(Event::Activate);
1334 }
1335
1336 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1337 let tail = self
1338 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1339 .tail();
1340 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1341
1342 self.select_columns(
1343 tail.to_display_point(&display_map),
1344 position,
1345 overshoot,
1346 &display_map,
1347 cx,
1348 );
1349 }
1350
1351 fn update_selection(
1352 &mut self,
1353 position: DisplayPoint,
1354 overshoot: u32,
1355 scroll_position: Vector2F,
1356 cx: &mut ViewContext<Self>,
1357 ) {
1358 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1359
1360 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1361 let tail = tail.to_display_point(&display_map);
1362 self.select_columns(tail, position, overshoot, &display_map, cx);
1363 } else if let Some(mut pending) = self.pending_selection.clone() {
1364 let buffer = self.buffer.read(cx).snapshot(cx);
1365 let head;
1366 let tail;
1367 match &pending.mode {
1368 SelectMode::Character => {
1369 head = position.to_point(&display_map);
1370 tail = pending.selection.tail().to_point(&buffer);
1371 }
1372 SelectMode::Word(original_range) => {
1373 let original_display_range = original_range.start.to_display_point(&display_map)
1374 ..original_range.end.to_display_point(&display_map);
1375 let original_buffer_range = original_display_range.start.to_point(&display_map)
1376 ..original_display_range.end.to_point(&display_map);
1377 if movement::is_inside_word(&display_map, position)
1378 || original_display_range.contains(&position)
1379 {
1380 let word_range = movement::surrounding_word(&display_map, position);
1381 if word_range.start < original_display_range.start {
1382 head = word_range.start.to_point(&display_map);
1383 } else {
1384 head = word_range.end.to_point(&display_map);
1385 }
1386 } else {
1387 head = position.to_point(&display_map);
1388 }
1389
1390 if head <= original_buffer_range.start {
1391 tail = original_buffer_range.end;
1392 } else {
1393 tail = original_buffer_range.start;
1394 }
1395 }
1396 SelectMode::Line(original_range) => {
1397 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1398
1399 let position = display_map
1400 .clip_point(position, Bias::Left)
1401 .to_point(&display_map);
1402 let line_start = display_map.prev_line_boundary(position).0;
1403 let next_line_start = buffer.clip_point(
1404 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1405 Bias::Left,
1406 );
1407
1408 if line_start < original_range.start {
1409 head = line_start
1410 } else {
1411 head = next_line_start
1412 }
1413
1414 if head <= original_range.start {
1415 tail = original_range.end;
1416 } else {
1417 tail = original_range.start;
1418 }
1419 }
1420 SelectMode::All => {
1421 return;
1422 }
1423 };
1424
1425 if head < tail {
1426 pending.selection.start = buffer.anchor_before(head);
1427 pending.selection.end = buffer.anchor_before(tail);
1428 pending.selection.reversed = true;
1429 } else {
1430 pending.selection.start = buffer.anchor_before(tail);
1431 pending.selection.end = buffer.anchor_before(head);
1432 pending.selection.reversed = false;
1433 }
1434 self.set_selections(self.selections.clone(), Some(pending), cx);
1435 } else {
1436 log::error!("update_selection dispatched with no pending selection");
1437 return;
1438 }
1439
1440 self.set_scroll_position(scroll_position, cx);
1441 cx.notify();
1442 }
1443
1444 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1445 self.columnar_selection_tail.take();
1446 if self.pending_selection.is_some() {
1447 let selections = self.local_selections::<usize>(cx);
1448 self.update_selections(selections, None, cx);
1449 }
1450 }
1451
1452 fn select_columns(
1453 &mut self,
1454 tail: DisplayPoint,
1455 head: DisplayPoint,
1456 overshoot: u32,
1457 display_map: &DisplaySnapshot,
1458 cx: &mut ViewContext<Self>,
1459 ) {
1460 let start_row = cmp::min(tail.row(), head.row());
1461 let end_row = cmp::max(tail.row(), head.row());
1462 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1463 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1464 let reversed = start_column < tail.column();
1465
1466 let selections = (start_row..=end_row)
1467 .filter_map(|row| {
1468 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1469 let start = display_map
1470 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1471 .to_point(&display_map);
1472 let end = display_map
1473 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1474 .to_point(&display_map);
1475 Some(Selection {
1476 id: post_inc(&mut self.next_selection_id),
1477 start,
1478 end,
1479 reversed,
1480 goal: SelectionGoal::None,
1481 })
1482 } else {
1483 None
1484 }
1485 })
1486 .collect::<Vec<_>>();
1487
1488 self.update_selections(selections, None, cx);
1489 cx.notify();
1490 }
1491
1492 pub fn is_selecting(&self) -> bool {
1493 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1494 }
1495
1496 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1497 if self.take_rename(cx).is_some() {
1498 return;
1499 }
1500
1501 if self.hide_context_menu(cx).is_some() {
1502 return;
1503 }
1504
1505 if self.snippet_stack.pop().is_some() {
1506 return;
1507 }
1508
1509 if self.mode != EditorMode::Full {
1510 cx.propagate_action();
1511 return;
1512 }
1513
1514 if self.active_diagnostics.is_some() {
1515 self.dismiss_diagnostics(cx);
1516 } else if let Some(pending) = self.pending_selection.clone() {
1517 let mut selections = self.selections.clone();
1518 if selections.is_empty() {
1519 selections = Arc::from([pending.selection]);
1520 }
1521 self.set_selections(selections, None, cx);
1522 self.request_autoscroll(Autoscroll::Fit, cx);
1523 } else {
1524 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1525 if self.selection_count() == 1 {
1526 if oldest_selection.is_empty() {
1527 cx.propagate_action();
1528 return;
1529 }
1530
1531 oldest_selection.start = oldest_selection.head().clone();
1532 oldest_selection.end = oldest_selection.head().clone();
1533 }
1534 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1535 }
1536 }
1537
1538 #[cfg(any(test, feature = "test-support"))]
1539 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1540 &self,
1541 cx: &mut MutableAppContext,
1542 ) -> Vec<Range<D>> {
1543 self.local_selections::<D>(cx)
1544 .iter()
1545 .map(|s| {
1546 if s.reversed {
1547 s.end.clone()..s.start.clone()
1548 } else {
1549 s.start.clone()..s.end.clone()
1550 }
1551 })
1552 .collect()
1553 }
1554
1555 #[cfg(any(test, feature = "test-support"))]
1556 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1557 let display_map = self
1558 .display_map
1559 .update(cx, |display_map, cx| display_map.snapshot(cx));
1560 self.selections
1561 .iter()
1562 .chain(
1563 self.pending_selection
1564 .as_ref()
1565 .map(|pending| &pending.selection),
1566 )
1567 .map(|s| {
1568 if s.reversed {
1569 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1570 } else {
1571 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1572 }
1573 })
1574 .collect()
1575 }
1576
1577 pub fn select_ranges<I, T>(
1578 &mut self,
1579 ranges: I,
1580 autoscroll: Option<Autoscroll>,
1581 cx: &mut ViewContext<Self>,
1582 ) where
1583 I: IntoIterator<Item = Range<T>>,
1584 T: ToOffset,
1585 {
1586 let buffer = self.buffer.read(cx).snapshot(cx);
1587 let selections = ranges
1588 .into_iter()
1589 .map(|range| {
1590 let mut start = range.start.to_offset(&buffer);
1591 let mut end = range.end.to_offset(&buffer);
1592 let reversed = if start > end {
1593 mem::swap(&mut start, &mut end);
1594 true
1595 } else {
1596 false
1597 };
1598 Selection {
1599 id: post_inc(&mut self.next_selection_id),
1600 start,
1601 end,
1602 reversed,
1603 goal: SelectionGoal::None,
1604 }
1605 })
1606 .collect::<Vec<_>>();
1607 self.update_selections(selections, autoscroll, cx);
1608 }
1609
1610 #[cfg(any(test, feature = "test-support"))]
1611 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1612 where
1613 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1614 {
1615 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1616 let selections = ranges
1617 .into_iter()
1618 .map(|range| {
1619 let mut start = range.start;
1620 let mut end = range.end;
1621 let reversed = if start > end {
1622 mem::swap(&mut start, &mut end);
1623 true
1624 } else {
1625 false
1626 };
1627 Selection {
1628 id: post_inc(&mut self.next_selection_id),
1629 start: start.to_point(&display_map),
1630 end: end.to_point(&display_map),
1631 reversed,
1632 goal: SelectionGoal::None,
1633 }
1634 })
1635 .collect();
1636 self.update_selections(selections, None, cx);
1637 }
1638
1639 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1640 let text = action.0.as_ref();
1641 if !self.skip_autoclose_end(text, cx) {
1642 self.start_transaction(cx);
1643 if !self.surround_with_bracket_pair(text, cx) {
1644 self.insert(text, cx);
1645 self.autoclose_bracket_pairs(cx);
1646 }
1647 self.end_transaction(cx);
1648 self.trigger_completion_on_input(text, cx);
1649 }
1650 }
1651
1652 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1653 self.start_transaction(cx);
1654 let mut old_selections = SmallVec::<[_; 32]>::new();
1655 {
1656 let selections = self.local_selections::<usize>(cx);
1657 let buffer = self.buffer.read(cx).snapshot(cx);
1658 for selection in selections.iter() {
1659 let start_point = selection.start.to_point(&buffer);
1660 let indent = buffer
1661 .indent_column_for_line(start_point.row)
1662 .min(start_point.column);
1663 let start = selection.start;
1664 let end = selection.end;
1665
1666 let mut insert_extra_newline = false;
1667 if let Some(language) = buffer.language() {
1668 let leading_whitespace_len = buffer
1669 .reversed_chars_at(start)
1670 .take_while(|c| c.is_whitespace() && *c != '\n')
1671 .map(|c| c.len_utf8())
1672 .sum::<usize>();
1673
1674 let trailing_whitespace_len = buffer
1675 .chars_at(end)
1676 .take_while(|c| c.is_whitespace() && *c != '\n')
1677 .map(|c| c.len_utf8())
1678 .sum::<usize>();
1679
1680 insert_extra_newline = language.brackets().iter().any(|pair| {
1681 let pair_start = pair.start.trim_end();
1682 let pair_end = pair.end.trim_start();
1683
1684 pair.newline
1685 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1686 && buffer.contains_str_at(
1687 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1688 pair_start,
1689 )
1690 });
1691 }
1692
1693 old_selections.push((
1694 selection.id,
1695 buffer.anchor_after(end),
1696 start..end,
1697 indent,
1698 insert_extra_newline,
1699 ));
1700 }
1701 }
1702
1703 self.buffer.update(cx, |buffer, cx| {
1704 let mut delta = 0_isize;
1705 let mut pending_edit: Option<PendingEdit> = None;
1706 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1707 if pending_edit.as_ref().map_or(false, |pending| {
1708 pending.indent != *indent
1709 || pending.insert_extra_newline != *insert_extra_newline
1710 }) {
1711 let pending = pending_edit.take().unwrap();
1712 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1713 new_text.push('\n');
1714 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1715 if pending.insert_extra_newline {
1716 new_text = new_text.repeat(2);
1717 }
1718 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1719 delta += pending.delta;
1720 }
1721
1722 let start = (range.start as isize + delta) as usize;
1723 let end = (range.end as isize + delta) as usize;
1724 let mut text_len = *indent as usize + 1;
1725 if *insert_extra_newline {
1726 text_len *= 2;
1727 }
1728
1729 let pending = pending_edit.get_or_insert_with(Default::default);
1730 pending.delta += text_len as isize - (end - start) as isize;
1731 pending.indent = *indent;
1732 pending.insert_extra_newline = *insert_extra_newline;
1733 pending.ranges.push(start..end);
1734 }
1735
1736 let pending = pending_edit.unwrap();
1737 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1738 new_text.push('\n');
1739 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1740 if pending.insert_extra_newline {
1741 new_text = new_text.repeat(2);
1742 }
1743 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1744
1745 let buffer = buffer.read(cx);
1746 self.selections = self
1747 .selections
1748 .iter()
1749 .cloned()
1750 .zip(old_selections)
1751 .map(
1752 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1753 let mut cursor = end_anchor.to_point(&buffer);
1754 if insert_extra_newline {
1755 cursor.row -= 1;
1756 cursor.column = buffer.line_len(cursor.row);
1757 }
1758 let anchor = buffer.anchor_after(cursor);
1759 new_selection.start = anchor.clone();
1760 new_selection.end = anchor;
1761 new_selection
1762 },
1763 )
1764 .collect();
1765 });
1766
1767 self.request_autoscroll(Autoscroll::Fit, cx);
1768 self.end_transaction(cx);
1769
1770 #[derive(Default)]
1771 struct PendingEdit {
1772 indent: u32,
1773 insert_extra_newline: bool,
1774 delta: isize,
1775 ranges: SmallVec<[Range<usize>; 32]>,
1776 }
1777 }
1778
1779 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1780 self.start_transaction(cx);
1781
1782 let old_selections = self.local_selections::<usize>(cx);
1783 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1784 let anchors = {
1785 let snapshot = buffer.read(cx);
1786 old_selections
1787 .iter()
1788 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1789 .collect::<Vec<_>>()
1790 };
1791 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1792 buffer.edit_with_autoindent(edit_ranges, text, cx);
1793 anchors
1794 });
1795
1796 let selections = {
1797 let snapshot = self.buffer.read(cx).read(cx);
1798 selection_anchors
1799 .into_iter()
1800 .map(|(id, goal, position)| {
1801 let position = position.to_offset(&snapshot);
1802 Selection {
1803 id,
1804 start: position,
1805 end: position,
1806 goal,
1807 reversed: false,
1808 }
1809 })
1810 .collect()
1811 };
1812 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1813 self.end_transaction(cx);
1814 }
1815
1816 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1817 let selection = self.newest_anchor_selection();
1818 if self
1819 .buffer
1820 .read(cx)
1821 .is_completion_trigger(selection.head(), text, cx)
1822 {
1823 self.show_completions(&ShowCompletions, cx);
1824 } else {
1825 self.hide_context_menu(cx);
1826 }
1827 }
1828
1829 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1830 let snapshot = self.buffer.read(cx).snapshot(cx);
1831 if let Some(pair) = snapshot
1832 .language()
1833 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1834 .cloned()
1835 {
1836 if self
1837 .local_selections::<usize>(cx)
1838 .iter()
1839 .any(|selection| selection.is_empty())
1840 {
1841 false
1842 } else {
1843 let mut selections = self.selections.to_vec();
1844 for selection in &mut selections {
1845 selection.end = selection.end.bias_left(&snapshot);
1846 }
1847 drop(snapshot);
1848
1849 self.buffer.update(cx, |buffer, cx| {
1850 buffer.edit(
1851 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1852 &pair.start,
1853 cx,
1854 );
1855 buffer.edit(
1856 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1857 &pair.end,
1858 cx,
1859 );
1860 });
1861
1862 let snapshot = self.buffer.read(cx).read(cx);
1863 for selection in &mut selections {
1864 selection.end = selection.end.bias_right(&snapshot);
1865 }
1866 drop(snapshot);
1867
1868 self.set_selections(selections.into(), None, cx);
1869 true
1870 }
1871 } else {
1872 false
1873 }
1874 }
1875
1876 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1877 let selections = self.local_selections::<usize>(cx);
1878 let mut bracket_pair_state = None;
1879 let mut new_selections = None;
1880 self.buffer.update(cx, |buffer, cx| {
1881 let mut snapshot = buffer.snapshot(cx);
1882 let left_biased_selections = selections
1883 .iter()
1884 .map(|selection| Selection {
1885 id: selection.id,
1886 start: snapshot.anchor_before(selection.start),
1887 end: snapshot.anchor_before(selection.end),
1888 reversed: selection.reversed,
1889 goal: selection.goal,
1890 })
1891 .collect::<Vec<_>>();
1892
1893 let autoclose_pair = snapshot.language().and_then(|language| {
1894 let first_selection_start = selections.first().unwrap().start;
1895 let pair = language.brackets().iter().find(|pair| {
1896 snapshot.contains_str_at(
1897 first_selection_start.saturating_sub(pair.start.len()),
1898 &pair.start,
1899 )
1900 });
1901 pair.and_then(|pair| {
1902 let should_autoclose = selections.iter().all(|selection| {
1903 // Ensure all selections are parked at the end of a pair start.
1904 if snapshot.contains_str_at(
1905 selection.start.saturating_sub(pair.start.len()),
1906 &pair.start,
1907 ) {
1908 // Autoclose only if the next character is a whitespace or a pair end
1909 // (possibly a different one from the pair we are inserting).
1910 snapshot
1911 .chars_at(selection.start)
1912 .next()
1913 .map_or(true, |ch| ch.is_whitespace())
1914 || language.brackets().iter().any(|pair| {
1915 snapshot.contains_str_at(selection.start, &pair.end)
1916 })
1917 } else {
1918 false
1919 }
1920 });
1921
1922 if should_autoclose {
1923 Some(pair.clone())
1924 } else {
1925 None
1926 }
1927 })
1928 });
1929
1930 if let Some(pair) = autoclose_pair {
1931 let selection_ranges = selections
1932 .iter()
1933 .map(|selection| {
1934 let start = selection.start.to_offset(&snapshot);
1935 start..start
1936 })
1937 .collect::<SmallVec<[_; 32]>>();
1938
1939 buffer.edit(selection_ranges, &pair.end, cx);
1940 snapshot = buffer.snapshot(cx);
1941
1942 new_selections = Some(
1943 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1944 .collect::<Vec<_>>(),
1945 );
1946
1947 if pair.end.len() == 1 {
1948 let mut delta = 0;
1949 bracket_pair_state = Some(BracketPairState {
1950 ranges: selections
1951 .iter()
1952 .map(move |selection| {
1953 let offset = selection.start + delta;
1954 delta += 1;
1955 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1956 })
1957 .collect(),
1958 pair,
1959 });
1960 }
1961 }
1962 });
1963
1964 if let Some(new_selections) = new_selections {
1965 self.update_selections(new_selections, None, cx);
1966 }
1967 if let Some(bracket_pair_state) = bracket_pair_state {
1968 self.autoclose_stack.push(bracket_pair_state);
1969 }
1970 }
1971
1972 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1973 let old_selections = self.local_selections::<usize>(cx);
1974 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1975 autoclose_pair
1976 } else {
1977 return false;
1978 };
1979 if text != autoclose_pair.pair.end {
1980 return false;
1981 }
1982
1983 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1984
1985 let buffer = self.buffer.read(cx).snapshot(cx);
1986 if old_selections
1987 .iter()
1988 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1989 .all(|(selection, autoclose_range)| {
1990 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1991 selection.is_empty() && selection.start == autoclose_range_end
1992 })
1993 {
1994 let new_selections = old_selections
1995 .into_iter()
1996 .map(|selection| {
1997 let cursor = selection.start + 1;
1998 Selection {
1999 id: selection.id,
2000 start: cursor,
2001 end: cursor,
2002 reversed: false,
2003 goal: SelectionGoal::None,
2004 }
2005 })
2006 .collect();
2007 self.autoclose_stack.pop();
2008 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2009 true
2010 } else {
2011 false
2012 }
2013 }
2014
2015 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2016 let offset = position.to_offset(buffer);
2017 let (word_range, kind) = buffer.surrounding_word(offset);
2018 if offset > word_range.start && kind == Some(CharKind::Word) {
2019 Some(
2020 buffer
2021 .text_for_range(word_range.start..offset)
2022 .collect::<String>(),
2023 )
2024 } else {
2025 None
2026 }
2027 }
2028
2029 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2030 if self.pending_rename.is_some() {
2031 return;
2032 }
2033
2034 let project = if let Some(project) = self.project.clone() {
2035 project
2036 } else {
2037 return;
2038 };
2039
2040 let position = self.newest_anchor_selection().head();
2041 let (buffer, buffer_position) = if let Some(output) = self
2042 .buffer
2043 .read(cx)
2044 .text_anchor_for_position(position.clone(), cx)
2045 {
2046 output
2047 } else {
2048 return;
2049 };
2050
2051 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2052 let completions = project.update(cx, |project, cx| {
2053 project.completions(&buffer, buffer_position.clone(), cx)
2054 });
2055
2056 let id = post_inc(&mut self.next_completion_id);
2057 let task = cx.spawn_weak(|this, mut cx| {
2058 async move {
2059 let completions = completions.await?;
2060 if completions.is_empty() {
2061 return Ok(());
2062 }
2063
2064 let mut menu = CompletionsMenu {
2065 id,
2066 initial_position: position,
2067 match_candidates: completions
2068 .iter()
2069 .enumerate()
2070 .map(|(id, completion)| {
2071 StringMatchCandidate::new(
2072 id,
2073 completion.label.text[completion.label.filter_range.clone()].into(),
2074 )
2075 })
2076 .collect(),
2077 buffer,
2078 completions: completions.into(),
2079 matches: Vec::new().into(),
2080 selected_item: 0,
2081 list: Default::default(),
2082 };
2083
2084 menu.filter(query.as_deref(), cx.background()).await;
2085
2086 if let Some(this) = this.upgrade(&cx) {
2087 this.update(&mut cx, |this, cx| {
2088 match this.context_menu.as_ref() {
2089 None => {}
2090 Some(ContextMenu::Completions(prev_menu)) => {
2091 if prev_menu.id > menu.id {
2092 return;
2093 }
2094 }
2095 _ => return,
2096 }
2097
2098 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2099 if this.focused {
2100 this.show_context_menu(ContextMenu::Completions(menu), cx);
2101 }
2102
2103 cx.notify();
2104 });
2105 }
2106 Ok::<_, anyhow::Error>(())
2107 }
2108 .log_err()
2109 });
2110 self.completion_tasks.push((id, task));
2111 }
2112
2113 pub fn confirm_completion(
2114 &mut self,
2115 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2116 cx: &mut ViewContext<Self>,
2117 ) -> Option<Task<Result<()>>> {
2118 use language::ToOffset as _;
2119
2120 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2121 menu
2122 } else {
2123 return None;
2124 };
2125
2126 let mat = completions_menu
2127 .matches
2128 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2129 let buffer_handle = completions_menu.buffer;
2130 let completion = completions_menu.completions.get(mat.candidate_id)?;
2131
2132 let snippet;
2133 let text;
2134 if completion.is_snippet() {
2135 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2136 text = snippet.as_ref().unwrap().text.clone();
2137 } else {
2138 snippet = None;
2139 text = completion.new_text.clone();
2140 };
2141 let buffer = buffer_handle.read(cx);
2142 let old_range = completion.old_range.to_offset(&buffer);
2143 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2144
2145 let selections = self.local_selections::<usize>(cx);
2146 let newest_selection = self.newest_anchor_selection();
2147 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2148 return None;
2149 }
2150
2151 let lookbehind = newest_selection
2152 .start
2153 .text_anchor
2154 .to_offset(buffer)
2155 .saturating_sub(old_range.start);
2156 let lookahead = old_range
2157 .end
2158 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2159 let mut common_prefix_len = old_text
2160 .bytes()
2161 .zip(text.bytes())
2162 .take_while(|(a, b)| a == b)
2163 .count();
2164
2165 let snapshot = self.buffer.read(cx).snapshot(cx);
2166 let mut ranges = Vec::new();
2167 for selection in &selections {
2168 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2169 let start = selection.start.saturating_sub(lookbehind);
2170 let end = selection.end + lookahead;
2171 ranges.push(start + common_prefix_len..end);
2172 } else {
2173 common_prefix_len = 0;
2174 ranges.clear();
2175 ranges.extend(selections.iter().map(|s| {
2176 if s.id == newest_selection.id {
2177 old_range.clone()
2178 } else {
2179 s.start..s.end
2180 }
2181 }));
2182 break;
2183 }
2184 }
2185 let text = &text[common_prefix_len..];
2186
2187 self.start_transaction(cx);
2188 if let Some(mut snippet) = snippet {
2189 snippet.text = text.to_string();
2190 for tabstop in snippet.tabstops.iter_mut().flatten() {
2191 tabstop.start -= common_prefix_len as isize;
2192 tabstop.end -= common_prefix_len as isize;
2193 }
2194
2195 self.insert_snippet(&ranges, snippet, cx).log_err();
2196 } else {
2197 self.buffer.update(cx, |buffer, cx| {
2198 buffer.edit_with_autoindent(ranges, text, cx);
2199 });
2200 }
2201 self.end_transaction(cx);
2202
2203 let project = self.project.clone()?;
2204 let apply_edits = project.update(cx, |project, cx| {
2205 project.apply_additional_edits_for_completion(
2206 buffer_handle,
2207 completion.clone(),
2208 true,
2209 cx,
2210 )
2211 });
2212 Some(cx.foreground().spawn(async move {
2213 apply_edits.await?;
2214 Ok(())
2215 }))
2216 }
2217
2218 pub fn toggle_code_actions(
2219 &mut self,
2220 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2221 cx: &mut ViewContext<Self>,
2222 ) {
2223 if matches!(
2224 self.context_menu.as_ref(),
2225 Some(ContextMenu::CodeActions(_))
2226 ) {
2227 self.context_menu.take();
2228 cx.notify();
2229 return;
2230 }
2231
2232 let mut task = self.code_actions_task.take();
2233 cx.spawn_weak(|this, mut cx| async move {
2234 while let Some(prev_task) = task {
2235 prev_task.await;
2236 task = this
2237 .upgrade(&cx)
2238 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2239 }
2240
2241 if let Some(this) = this.upgrade(&cx) {
2242 this.update(&mut cx, |this, cx| {
2243 if this.focused {
2244 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2245 this.show_context_menu(
2246 ContextMenu::CodeActions(CodeActionsMenu {
2247 buffer,
2248 actions,
2249 selected_item: Default::default(),
2250 list: Default::default(),
2251 deployed_from_indicator,
2252 }),
2253 cx,
2254 );
2255 }
2256 }
2257 })
2258 }
2259 Ok::<_, anyhow::Error>(())
2260 })
2261 .detach_and_log_err(cx);
2262 }
2263
2264 pub fn confirm_code_action(
2265 workspace: &mut Workspace,
2266 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2267 cx: &mut ViewContext<Workspace>,
2268 ) -> Option<Task<Result<()>>> {
2269 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2270 let actions_menu = if let ContextMenu::CodeActions(menu) =
2271 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2272 {
2273 menu
2274 } else {
2275 return None;
2276 };
2277 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2278 let action = actions_menu.actions.get(action_ix)?.clone();
2279 let title = action.lsp_action.title.clone();
2280 let buffer = actions_menu.buffer;
2281
2282 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2283 project.apply_code_action(buffer, action, true, cx)
2284 });
2285 Some(cx.spawn(|workspace, cx| async move {
2286 let project_transaction = apply_code_actions.await?;
2287 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2288 }))
2289 }
2290
2291 async fn open_project_transaction(
2292 this: ViewHandle<Editor>,
2293 workspace: ViewHandle<Workspace>,
2294 transaction: ProjectTransaction,
2295 title: String,
2296 mut cx: AsyncAppContext,
2297 ) -> Result<()> {
2298 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2299
2300 // If the code action's edits are all contained within this editor, then
2301 // avoid opening a new editor to display them.
2302 let mut entries = transaction.0.iter();
2303 if let Some((buffer, transaction)) = entries.next() {
2304 if entries.next().is_none() {
2305 let excerpt = this.read_with(&cx, |editor, cx| {
2306 editor
2307 .buffer()
2308 .read(cx)
2309 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2310 });
2311 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2312 if excerpted_buffer == *buffer {
2313 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2314 let excerpt_range = excerpt_range.to_offset(&snapshot);
2315 if snapshot
2316 .edited_ranges_for_transaction(transaction)
2317 .all(|range| {
2318 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2319 })
2320 {
2321 return Ok(());
2322 }
2323 }
2324 }
2325 }
2326 }
2327
2328 let mut ranges_to_highlight = Vec::new();
2329 let excerpt_buffer = cx.add_model(|cx| {
2330 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2331 for (buffer, transaction) in &transaction.0 {
2332 let snapshot = buffer.read(cx).snapshot();
2333 ranges_to_highlight.extend(
2334 multibuffer.push_excerpts_with_context_lines(
2335 buffer.clone(),
2336 snapshot
2337 .edited_ranges_for_transaction::<usize>(transaction)
2338 .collect(),
2339 1,
2340 cx,
2341 ),
2342 );
2343 }
2344 multibuffer.push_transaction(&transaction.0);
2345 multibuffer
2346 });
2347
2348 workspace.update(&mut cx, |workspace, cx| {
2349 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2350 if let Some(editor) = editor.act_as::<Self>(cx) {
2351 editor.update(cx, |editor, cx| {
2352 let color = editor.style(cx).highlighted_line_background;
2353 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2354 });
2355 }
2356 });
2357
2358 Ok(())
2359 }
2360
2361 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2362 let project = self.project.as_ref()?;
2363 let buffer = self.buffer.read(cx);
2364 let newest_selection = self.newest_anchor_selection().clone();
2365 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2366 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2367 if start_buffer != end_buffer {
2368 return None;
2369 }
2370
2371 let actions = project.update(cx, |project, cx| {
2372 project.code_actions(&start_buffer, start..end, cx)
2373 });
2374 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2375 let actions = actions.await;
2376 if let Some(this) = this.upgrade(&cx) {
2377 this.update(&mut cx, |this, cx| {
2378 this.available_code_actions = actions.log_err().and_then(|actions| {
2379 if actions.is_empty() {
2380 None
2381 } else {
2382 Some((start_buffer, actions.into()))
2383 }
2384 });
2385 cx.notify();
2386 })
2387 }
2388 }));
2389 None
2390 }
2391
2392 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2393 let project = self.project.as_ref()?;
2394 let buffer = self.buffer.read(cx);
2395 let newest_selection = self.newest_anchor_selection().clone();
2396 let cursor_position = newest_selection.head();
2397 let (cursor_buffer, cursor_buffer_position) =
2398 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2399 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2400 if cursor_buffer != tail_buffer {
2401 return None;
2402 }
2403
2404 let highlights = project.update(cx, |project, cx| {
2405 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2406 });
2407
2408 enum DocumentHighlightRead {}
2409 enum DocumentHighlightWrite {}
2410
2411 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2412 let highlights = highlights.log_err().await;
2413 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2414 this.update(&mut cx, |this, cx| {
2415 let buffer_id = cursor_position.buffer_id;
2416 let excerpt_id = cursor_position.excerpt_id.clone();
2417 let style = this.style(cx);
2418 let read_background = style.document_highlight_read_background;
2419 let write_background = style.document_highlight_write_background;
2420 let buffer = this.buffer.read(cx);
2421 if !buffer
2422 .text_anchor_for_position(cursor_position, cx)
2423 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2424 {
2425 return;
2426 }
2427
2428 let mut write_ranges = Vec::new();
2429 let mut read_ranges = Vec::new();
2430 for highlight in highlights {
2431 let range = Anchor {
2432 buffer_id,
2433 excerpt_id: excerpt_id.clone(),
2434 text_anchor: highlight.range.start,
2435 }..Anchor {
2436 buffer_id,
2437 excerpt_id: excerpt_id.clone(),
2438 text_anchor: highlight.range.end,
2439 };
2440 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2441 write_ranges.push(range);
2442 } else {
2443 read_ranges.push(range);
2444 }
2445 }
2446
2447 this.highlight_ranges::<DocumentHighlightRead>(
2448 read_ranges,
2449 read_background,
2450 cx,
2451 );
2452 this.highlight_ranges::<DocumentHighlightWrite>(
2453 write_ranges,
2454 write_background,
2455 cx,
2456 );
2457 cx.notify();
2458 });
2459 }
2460 }));
2461 None
2462 }
2463
2464 pub fn render_code_actions_indicator(
2465 &self,
2466 style: &EditorStyle,
2467 cx: &mut ViewContext<Self>,
2468 ) -> Option<ElementBox> {
2469 if self.available_code_actions.is_some() {
2470 enum Tag {}
2471 Some(
2472 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2473 Svg::new("icons/zap.svg")
2474 .with_color(style.code_actions_indicator)
2475 .boxed()
2476 })
2477 .with_cursor_style(CursorStyle::PointingHand)
2478 .with_padding(Padding::uniform(3.))
2479 .on_mouse_down(|cx| {
2480 cx.dispatch_action(ToggleCodeActions(true));
2481 })
2482 .boxed(),
2483 )
2484 } else {
2485 None
2486 }
2487 }
2488
2489 pub fn context_menu_visible(&self) -> bool {
2490 self.context_menu
2491 .as_ref()
2492 .map_or(false, |menu| menu.visible())
2493 }
2494
2495 pub fn render_context_menu(
2496 &self,
2497 cursor_position: DisplayPoint,
2498 style: EditorStyle,
2499 cx: &AppContext,
2500 ) -> Option<(DisplayPoint, ElementBox)> {
2501 self.context_menu
2502 .as_ref()
2503 .map(|menu| menu.render(cursor_position, style, cx))
2504 }
2505
2506 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2507 if !matches!(menu, ContextMenu::Completions(_)) {
2508 self.completion_tasks.clear();
2509 }
2510 self.context_menu = Some(menu);
2511 cx.notify();
2512 }
2513
2514 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2515 cx.notify();
2516 self.completion_tasks.clear();
2517 self.context_menu.take()
2518 }
2519
2520 pub fn insert_snippet(
2521 &mut self,
2522 insertion_ranges: &[Range<usize>],
2523 snippet: Snippet,
2524 cx: &mut ViewContext<Self>,
2525 ) -> Result<()> {
2526 let tabstops = self.buffer.update(cx, |buffer, cx| {
2527 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2528
2529 let snapshot = &*buffer.read(cx);
2530 let snippet = &snippet;
2531 snippet
2532 .tabstops
2533 .iter()
2534 .map(|tabstop| {
2535 let mut tabstop_ranges = tabstop
2536 .iter()
2537 .flat_map(|tabstop_range| {
2538 let mut delta = 0 as isize;
2539 insertion_ranges.iter().map(move |insertion_range| {
2540 let insertion_start = insertion_range.start as isize + delta;
2541 delta +=
2542 snippet.text.len() as isize - insertion_range.len() as isize;
2543
2544 let start = snapshot.anchor_before(
2545 (insertion_start + tabstop_range.start) as usize,
2546 );
2547 let end = snapshot
2548 .anchor_after((insertion_start + tabstop_range.end) as usize);
2549 start..end
2550 })
2551 })
2552 .collect::<Vec<_>>();
2553 tabstop_ranges
2554 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2555 tabstop_ranges
2556 })
2557 .collect::<Vec<_>>()
2558 });
2559
2560 if let Some(tabstop) = tabstops.first() {
2561 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2562 self.snippet_stack.push(SnippetState {
2563 active_index: 0,
2564 ranges: tabstops,
2565 });
2566 }
2567
2568 Ok(())
2569 }
2570
2571 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2572 self.move_to_snippet_tabstop(Bias::Right, cx)
2573 }
2574
2575 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2576 self.move_to_snippet_tabstop(Bias::Left, cx);
2577 }
2578
2579 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2580 let buffer = self.buffer.read(cx).snapshot(cx);
2581
2582 if let Some(snippet) = self.snippet_stack.last_mut() {
2583 match bias {
2584 Bias::Left => {
2585 if snippet.active_index > 0 {
2586 snippet.active_index -= 1;
2587 } else {
2588 return false;
2589 }
2590 }
2591 Bias::Right => {
2592 if snippet.active_index + 1 < snippet.ranges.len() {
2593 snippet.active_index += 1;
2594 } else {
2595 return false;
2596 }
2597 }
2598 }
2599 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2600 let new_selections = current_ranges
2601 .iter()
2602 .map(|new_range| {
2603 let new_range = new_range.to_offset(&buffer);
2604 Selection {
2605 id: post_inc(&mut self.next_selection_id),
2606 start: new_range.start,
2607 end: new_range.end,
2608 reversed: false,
2609 goal: SelectionGoal::None,
2610 }
2611 })
2612 .collect();
2613
2614 // Remove the snippet state when moving to the last tabstop.
2615 if snippet.active_index + 1 == snippet.ranges.len() {
2616 self.snippet_stack.pop();
2617 }
2618
2619 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2620 return true;
2621 }
2622 self.snippet_stack.pop();
2623 }
2624
2625 false
2626 }
2627
2628 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2629 self.start_transaction(cx);
2630 self.select_all(&SelectAll, cx);
2631 self.insert("", cx);
2632 self.end_transaction(cx);
2633 }
2634
2635 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2636 self.start_transaction(cx);
2637 let mut selections = self.local_selections::<Point>(cx);
2638 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2639 for selection in &mut selections {
2640 if selection.is_empty() {
2641 let old_head = selection.head();
2642 let (buffer, line_buffer_range) = display_map
2643 .buffer_snapshot
2644 .buffer_line_for_row(old_head.row)
2645 .unwrap();
2646 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2647 let mut new_head =
2648 movement::left(&display_map, old_head.to_display_point(&display_map))
2649 .unwrap()
2650 .to_point(&display_map);
2651 if old_head.column <= indent_column && old_head.column > 0 {
2652 let indent = buffer.indent_size();
2653 new_head = cmp::min(
2654 new_head,
2655 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2656 );
2657 }
2658
2659 selection.set_head(new_head);
2660 selection.goal = SelectionGoal::None;
2661 }
2662 }
2663 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2664 self.insert("", cx);
2665 self.end_transaction(cx);
2666 }
2667
2668 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2669 self.start_transaction(cx);
2670 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2671 let mut selections = self.local_selections::<Point>(cx);
2672 for selection in &mut selections {
2673 if selection.is_empty() {
2674 let head = selection.head().to_display_point(&display_map);
2675 let cursor = movement::right(&display_map, head)
2676 .unwrap()
2677 .to_point(&display_map);
2678 selection.set_head(cursor);
2679 selection.goal = SelectionGoal::None;
2680 }
2681 }
2682 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2683 self.insert(&"", cx);
2684 self.end_transaction(cx);
2685 }
2686
2687 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2688 if self.move_to_next_snippet_tabstop(cx) {
2689 return;
2690 }
2691
2692 self.start_transaction(cx);
2693 let tab_size = self.settings.borrow().tab_size;
2694 let mut selections = self.local_selections::<Point>(cx);
2695 let mut last_indent = None;
2696 self.buffer.update(cx, |buffer, cx| {
2697 for selection in &mut selections {
2698 if selection.is_empty() {
2699 let char_column = buffer
2700 .read(cx)
2701 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2702 .flat_map(str::chars)
2703 .count();
2704 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2705 buffer.edit(
2706 [selection.start..selection.start],
2707 " ".repeat(chars_to_next_tab_stop),
2708 cx,
2709 );
2710 selection.start.column += chars_to_next_tab_stop as u32;
2711 selection.end = selection.start;
2712 } else {
2713 let mut start_row = selection.start.row;
2714 let mut end_row = selection.end.row + 1;
2715
2716 // If a selection ends at the beginning of a line, don't indent
2717 // that last line.
2718 if selection.end.column == 0 {
2719 end_row -= 1;
2720 }
2721
2722 // Avoid re-indenting a row that has already been indented by a
2723 // previous selection, but still update this selection's column
2724 // to reflect that indentation.
2725 if let Some((last_indent_row, last_indent_len)) = last_indent {
2726 if last_indent_row == selection.start.row {
2727 selection.start.column += last_indent_len;
2728 start_row += 1;
2729 }
2730 if last_indent_row == selection.end.row {
2731 selection.end.column += last_indent_len;
2732 }
2733 }
2734
2735 for row in start_row..end_row {
2736 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2737 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2738 let row_start = Point::new(row, 0);
2739 buffer.edit(
2740 [row_start..row_start],
2741 " ".repeat(columns_to_next_tab_stop),
2742 cx,
2743 );
2744
2745 // Update this selection's endpoints to reflect the indentation.
2746 if row == selection.start.row {
2747 selection.start.column += columns_to_next_tab_stop as u32;
2748 }
2749 if row == selection.end.row {
2750 selection.end.column += columns_to_next_tab_stop as u32;
2751 }
2752
2753 last_indent = Some((row, columns_to_next_tab_stop as u32));
2754 }
2755 }
2756 }
2757 });
2758
2759 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2760 self.end_transaction(cx);
2761 }
2762
2763 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2764 if !self.snippet_stack.is_empty() {
2765 self.move_to_prev_snippet_tabstop(cx);
2766 return;
2767 }
2768
2769 self.start_transaction(cx);
2770 let tab_size = self.settings.borrow().tab_size;
2771 let selections = self.local_selections::<Point>(cx);
2772 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2773 let mut deletion_ranges = Vec::new();
2774 let mut last_outdent = None;
2775 {
2776 let buffer = self.buffer.read(cx).read(cx);
2777 for selection in &selections {
2778 let mut rows = selection.spanned_rows(false, &display_map);
2779
2780 // Avoid re-outdenting a row that has already been outdented by a
2781 // previous selection.
2782 if let Some(last_row) = last_outdent {
2783 if last_row == rows.start {
2784 rows.start += 1;
2785 }
2786 }
2787
2788 for row in rows {
2789 let column = buffer.indent_column_for_line(row) as usize;
2790 if column > 0 {
2791 let mut deletion_len = (column % tab_size) as u32;
2792 if deletion_len == 0 {
2793 deletion_len = tab_size as u32;
2794 }
2795 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2796 last_outdent = Some(row);
2797 }
2798 }
2799 }
2800 }
2801 self.buffer.update(cx, |buffer, cx| {
2802 buffer.edit(deletion_ranges, "", cx);
2803 });
2804
2805 self.update_selections(
2806 self.local_selections::<usize>(cx),
2807 Some(Autoscroll::Fit),
2808 cx,
2809 );
2810 self.end_transaction(cx);
2811 }
2812
2813 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2814 self.start_transaction(cx);
2815
2816 let selections = self.local_selections::<Point>(cx);
2817 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2818 let buffer = self.buffer.read(cx).snapshot(cx);
2819
2820 let mut new_cursors = Vec::new();
2821 let mut edit_ranges = Vec::new();
2822 let mut selections = selections.iter().peekable();
2823 while let Some(selection) = selections.next() {
2824 let mut rows = selection.spanned_rows(false, &display_map);
2825 let goal_display_column = selection.head().to_display_point(&display_map).column();
2826
2827 // Accumulate contiguous regions of rows that we want to delete.
2828 while let Some(next_selection) = selections.peek() {
2829 let next_rows = next_selection.spanned_rows(false, &display_map);
2830 if next_rows.start <= rows.end {
2831 rows.end = next_rows.end;
2832 selections.next().unwrap();
2833 } else {
2834 break;
2835 }
2836 }
2837
2838 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2839 let edit_end;
2840 let cursor_buffer_row;
2841 if buffer.max_point().row >= rows.end {
2842 // If there's a line after the range, delete the \n from the end of the row range
2843 // and position the cursor on the next line.
2844 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2845 cursor_buffer_row = rows.end;
2846 } else {
2847 // If there isn't a line after the range, delete the \n from the line before the
2848 // start of the row range and position the cursor there.
2849 edit_start = edit_start.saturating_sub(1);
2850 edit_end = buffer.len();
2851 cursor_buffer_row = rows.start.saturating_sub(1);
2852 }
2853
2854 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2855 *cursor.column_mut() =
2856 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2857
2858 new_cursors.push((
2859 selection.id,
2860 buffer.anchor_after(cursor.to_point(&display_map)),
2861 ));
2862 edit_ranges.push(edit_start..edit_end);
2863 }
2864
2865 let buffer = self.buffer.update(cx, |buffer, cx| {
2866 buffer.edit(edit_ranges, "", cx);
2867 buffer.snapshot(cx)
2868 });
2869 let new_selections = new_cursors
2870 .into_iter()
2871 .map(|(id, cursor)| {
2872 let cursor = cursor.to_point(&buffer);
2873 Selection {
2874 id,
2875 start: cursor,
2876 end: cursor,
2877 reversed: false,
2878 goal: SelectionGoal::None,
2879 }
2880 })
2881 .collect();
2882 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2883 self.end_transaction(cx);
2884 }
2885
2886 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2887 self.start_transaction(cx);
2888
2889 let selections = self.local_selections::<Point>(cx);
2890 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2891 let buffer = &display_map.buffer_snapshot;
2892
2893 let mut edits = Vec::new();
2894 let mut selections_iter = selections.iter().peekable();
2895 while let Some(selection) = selections_iter.next() {
2896 // Avoid duplicating the same lines twice.
2897 let mut rows = selection.spanned_rows(false, &display_map);
2898
2899 while let Some(next_selection) = selections_iter.peek() {
2900 let next_rows = next_selection.spanned_rows(false, &display_map);
2901 if next_rows.start <= rows.end - 1 {
2902 rows.end = next_rows.end;
2903 selections_iter.next().unwrap();
2904 } else {
2905 break;
2906 }
2907 }
2908
2909 // Copy the text from the selected row region and splice it at the start of the region.
2910 let start = Point::new(rows.start, 0);
2911 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2912 let text = buffer
2913 .text_for_range(start..end)
2914 .chain(Some("\n"))
2915 .collect::<String>();
2916 edits.push((start, text, rows.len() as u32));
2917 }
2918
2919 self.buffer.update(cx, |buffer, cx| {
2920 for (point, text, _) in edits.into_iter().rev() {
2921 buffer.edit(Some(point..point), text, cx);
2922 }
2923 });
2924
2925 self.request_autoscroll(Autoscroll::Fit, cx);
2926 self.end_transaction(cx);
2927 }
2928
2929 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2930 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2931 let buffer = self.buffer.read(cx).snapshot(cx);
2932
2933 let mut edits = Vec::new();
2934 let mut unfold_ranges = Vec::new();
2935 let mut refold_ranges = Vec::new();
2936
2937 let selections = self.local_selections::<Point>(cx);
2938 let mut selections = selections.iter().peekable();
2939 let mut contiguous_row_selections = Vec::new();
2940 let mut new_selections = Vec::new();
2941
2942 while let Some(selection) = selections.next() {
2943 // Find all the selections that span a contiguous row range
2944 contiguous_row_selections.push(selection.clone());
2945 let start_row = selection.start.row;
2946 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2947 display_map.next_line_boundary(selection.end).0.row + 1
2948 } else {
2949 selection.end.row
2950 };
2951
2952 while let Some(next_selection) = selections.peek() {
2953 if next_selection.start.row <= end_row {
2954 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2955 display_map.next_line_boundary(next_selection.end).0.row + 1
2956 } else {
2957 next_selection.end.row
2958 };
2959 contiguous_row_selections.push(selections.next().unwrap().clone());
2960 } else {
2961 break;
2962 }
2963 }
2964
2965 // Move the text spanned by the row range to be before the line preceding the row range
2966 if start_row > 0 {
2967 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2968 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2969 let insertion_point = display_map
2970 .prev_line_boundary(Point::new(start_row - 1, 0))
2971 .0;
2972
2973 // Don't move lines across excerpts
2974 if buffer
2975 .excerpt_boundaries_in_range((
2976 Bound::Excluded(insertion_point),
2977 Bound::Included(range_to_move.end),
2978 ))
2979 .next()
2980 .is_none()
2981 {
2982 let text = buffer
2983 .text_for_range(range_to_move.clone())
2984 .flat_map(|s| s.chars())
2985 .skip(1)
2986 .chain(['\n'])
2987 .collect::<String>();
2988
2989 edits.push((
2990 buffer.anchor_after(range_to_move.start)
2991 ..buffer.anchor_before(range_to_move.end),
2992 String::new(),
2993 ));
2994 let insertion_anchor = buffer.anchor_after(insertion_point);
2995 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2996
2997 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2998
2999 // Move selections up
3000 new_selections.extend(contiguous_row_selections.drain(..).map(
3001 |mut selection| {
3002 selection.start.row -= row_delta;
3003 selection.end.row -= row_delta;
3004 selection
3005 },
3006 ));
3007
3008 // Move folds up
3009 unfold_ranges.push(range_to_move.clone());
3010 for fold in display_map.folds_in_range(
3011 buffer.anchor_before(range_to_move.start)
3012 ..buffer.anchor_after(range_to_move.end),
3013 ) {
3014 let mut start = fold.start.to_point(&buffer);
3015 let mut end = fold.end.to_point(&buffer);
3016 start.row -= row_delta;
3017 end.row -= row_delta;
3018 refold_ranges.push(start..end);
3019 }
3020 }
3021 }
3022
3023 // If we didn't move line(s), preserve the existing selections
3024 new_selections.extend(contiguous_row_selections.drain(..));
3025 }
3026
3027 self.start_transaction(cx);
3028 self.unfold_ranges(unfold_ranges, cx);
3029 self.buffer.update(cx, |buffer, cx| {
3030 for (range, text) in edits {
3031 buffer.edit([range], text, cx);
3032 }
3033 });
3034 self.fold_ranges(refold_ranges, cx);
3035 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3036 self.end_transaction(cx);
3037 }
3038
3039 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3040 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3041 let buffer = self.buffer.read(cx).snapshot(cx);
3042
3043 let mut edits = Vec::new();
3044 let mut unfold_ranges = Vec::new();
3045 let mut refold_ranges = Vec::new();
3046
3047 let selections = self.local_selections::<Point>(cx);
3048 let mut selections = selections.iter().peekable();
3049 let mut contiguous_row_selections = Vec::new();
3050 let mut new_selections = Vec::new();
3051
3052 while let Some(selection) = selections.next() {
3053 // Find all the selections that span a contiguous row range
3054 contiguous_row_selections.push(selection.clone());
3055 let start_row = selection.start.row;
3056 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3057 display_map.next_line_boundary(selection.end).0.row + 1
3058 } else {
3059 selection.end.row
3060 };
3061
3062 while let Some(next_selection) = selections.peek() {
3063 if next_selection.start.row <= end_row {
3064 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3065 display_map.next_line_boundary(next_selection.end).0.row + 1
3066 } else {
3067 next_selection.end.row
3068 };
3069 contiguous_row_selections.push(selections.next().unwrap().clone());
3070 } else {
3071 break;
3072 }
3073 }
3074
3075 // Move the text spanned by the row range to be after the last line of the row range
3076 if end_row <= buffer.max_point().row {
3077 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3078 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3079
3080 // Don't move lines across excerpt boundaries
3081 if buffer
3082 .excerpt_boundaries_in_range((
3083 Bound::Excluded(range_to_move.start),
3084 Bound::Included(insertion_point),
3085 ))
3086 .next()
3087 .is_none()
3088 {
3089 let mut text = String::from("\n");
3090 text.extend(buffer.text_for_range(range_to_move.clone()));
3091 text.pop(); // Drop trailing newline
3092 edits.push((
3093 buffer.anchor_after(range_to_move.start)
3094 ..buffer.anchor_before(range_to_move.end),
3095 String::new(),
3096 ));
3097 let insertion_anchor = buffer.anchor_after(insertion_point);
3098 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3099
3100 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3101
3102 // Move selections down
3103 new_selections.extend(contiguous_row_selections.drain(..).map(
3104 |mut selection| {
3105 selection.start.row += row_delta;
3106 selection.end.row += row_delta;
3107 selection
3108 },
3109 ));
3110
3111 // Move folds down
3112 unfold_ranges.push(range_to_move.clone());
3113 for fold in display_map.folds_in_range(
3114 buffer.anchor_before(range_to_move.start)
3115 ..buffer.anchor_after(range_to_move.end),
3116 ) {
3117 let mut start = fold.start.to_point(&buffer);
3118 let mut end = fold.end.to_point(&buffer);
3119 start.row += row_delta;
3120 end.row += row_delta;
3121 refold_ranges.push(start..end);
3122 }
3123 }
3124 }
3125
3126 // If we didn't move line(s), preserve the existing selections
3127 new_selections.extend(contiguous_row_selections.drain(..));
3128 }
3129
3130 self.start_transaction(cx);
3131 self.unfold_ranges(unfold_ranges, cx);
3132 self.buffer.update(cx, |buffer, cx| {
3133 for (range, text) in edits {
3134 buffer.edit([range], text, cx);
3135 }
3136 });
3137 self.fold_ranges(refold_ranges, cx);
3138 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3139 self.end_transaction(cx);
3140 }
3141
3142 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3143 self.start_transaction(cx);
3144 let mut text = String::new();
3145 let mut selections = self.local_selections::<Point>(cx);
3146 let mut clipboard_selections = Vec::with_capacity(selections.len());
3147 {
3148 let buffer = self.buffer.read(cx).read(cx);
3149 let max_point = buffer.max_point();
3150 for selection in &mut selections {
3151 let is_entire_line = selection.is_empty();
3152 if is_entire_line {
3153 selection.start = Point::new(selection.start.row, 0);
3154 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3155 selection.goal = SelectionGoal::None;
3156 }
3157 let mut len = 0;
3158 for chunk in buffer.text_for_range(selection.start..selection.end) {
3159 text.push_str(chunk);
3160 len += chunk.len();
3161 }
3162 clipboard_selections.push(ClipboardSelection {
3163 len,
3164 is_entire_line,
3165 });
3166 }
3167 }
3168 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3169 self.insert("", cx);
3170 self.end_transaction(cx);
3171
3172 cx.as_mut()
3173 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3174 }
3175
3176 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3177 let selections = self.local_selections::<Point>(cx);
3178 let mut text = String::new();
3179 let mut clipboard_selections = Vec::with_capacity(selections.len());
3180 {
3181 let buffer = self.buffer.read(cx).read(cx);
3182 let max_point = buffer.max_point();
3183 for selection in selections.iter() {
3184 let mut start = selection.start;
3185 let mut end = selection.end;
3186 let is_entire_line = selection.is_empty();
3187 if is_entire_line {
3188 start = Point::new(start.row, 0);
3189 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3190 }
3191 let mut len = 0;
3192 for chunk in buffer.text_for_range(start..end) {
3193 text.push_str(chunk);
3194 len += chunk.len();
3195 }
3196 clipboard_selections.push(ClipboardSelection {
3197 len,
3198 is_entire_line,
3199 });
3200 }
3201 }
3202
3203 cx.as_mut()
3204 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3205 }
3206
3207 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3208 if let Some(item) = cx.as_mut().read_from_clipboard() {
3209 let clipboard_text = item.text();
3210 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3211 let mut selections = self.local_selections::<usize>(cx);
3212 let all_selections_were_entire_line =
3213 clipboard_selections.iter().all(|s| s.is_entire_line);
3214 if clipboard_selections.len() != selections.len() {
3215 clipboard_selections.clear();
3216 }
3217
3218 let mut delta = 0_isize;
3219 let mut start_offset = 0;
3220 for (i, selection) in selections.iter_mut().enumerate() {
3221 let to_insert;
3222 let entire_line;
3223 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3224 let end_offset = start_offset + clipboard_selection.len;
3225 to_insert = &clipboard_text[start_offset..end_offset];
3226 entire_line = clipboard_selection.is_entire_line;
3227 start_offset = end_offset
3228 } else {
3229 to_insert = clipboard_text.as_str();
3230 entire_line = all_selections_were_entire_line;
3231 }
3232
3233 selection.start = (selection.start as isize + delta) as usize;
3234 selection.end = (selection.end as isize + delta) as usize;
3235
3236 self.buffer.update(cx, |buffer, cx| {
3237 // If the corresponding selection was empty when this slice of the
3238 // clipboard text was written, then the entire line containing the
3239 // selection was copied. If this selection is also currently empty,
3240 // then paste the line before the current line of the buffer.
3241 let range = if selection.is_empty() && entire_line {
3242 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3243 let line_start = selection.start - column;
3244 line_start..line_start
3245 } else {
3246 selection.start..selection.end
3247 };
3248
3249 delta += to_insert.len() as isize - range.len() as isize;
3250 buffer.edit([range], to_insert, cx);
3251 selection.start += to_insert.len();
3252 selection.end = selection.start;
3253 });
3254 }
3255 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3256 } else {
3257 self.insert(clipboard_text, cx);
3258 }
3259 }
3260 }
3261
3262 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3263 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3264 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3265 self.set_selections(selections, None, cx);
3266 }
3267 self.request_autoscroll(Autoscroll::Fit, cx);
3268 }
3269 }
3270
3271 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3272 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3273 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3274 self.set_selections(selections, None, cx);
3275 }
3276 self.request_autoscroll(Autoscroll::Fit, cx);
3277 }
3278 }
3279
3280 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3281 self.buffer
3282 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3283 }
3284
3285 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3286 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3287 let mut selections = self.local_selections::<Point>(cx);
3288 for selection in &mut selections {
3289 let start = selection.start.to_display_point(&display_map);
3290 let end = selection.end.to_display_point(&display_map);
3291
3292 if start != end {
3293 selection.end = selection.start.clone();
3294 } else {
3295 let cursor = movement::left(&display_map, start)
3296 .unwrap()
3297 .to_point(&display_map);
3298 selection.start = cursor.clone();
3299 selection.end = cursor;
3300 }
3301 selection.reversed = false;
3302 selection.goal = SelectionGoal::None;
3303 }
3304 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3305 }
3306
3307 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3308 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3309 let mut selections = self.local_selections::<Point>(cx);
3310 for selection in &mut selections {
3311 let head = selection.head().to_display_point(&display_map);
3312 let cursor = movement::left(&display_map, head)
3313 .unwrap()
3314 .to_point(&display_map);
3315 selection.set_head(cursor);
3316 selection.goal = SelectionGoal::None;
3317 }
3318 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3319 }
3320
3321 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3322 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3323 let mut selections = self.local_selections::<Point>(cx);
3324 for selection in &mut selections {
3325 let start = selection.start.to_display_point(&display_map);
3326 let end = selection.end.to_display_point(&display_map);
3327
3328 if start != end {
3329 selection.start = selection.end.clone();
3330 } else {
3331 let cursor = movement::right(&display_map, end)
3332 .unwrap()
3333 .to_point(&display_map);
3334 selection.start = cursor;
3335 selection.end = cursor;
3336 }
3337 selection.reversed = false;
3338 selection.goal = SelectionGoal::None;
3339 }
3340 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3341 }
3342
3343 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3344 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3345 let mut selections = self.local_selections::<Point>(cx);
3346 for selection in &mut selections {
3347 let head = selection.head().to_display_point(&display_map);
3348 let cursor = movement::right(&display_map, head)
3349 .unwrap()
3350 .to_point(&display_map);
3351 selection.set_head(cursor);
3352 selection.goal = SelectionGoal::None;
3353 }
3354 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3355 }
3356
3357 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3358 if self.take_rename(cx).is_some() {
3359 return;
3360 }
3361
3362 if let Some(context_menu) = self.context_menu.as_mut() {
3363 if context_menu.select_prev(cx) {
3364 return;
3365 }
3366 }
3367
3368 if matches!(self.mode, EditorMode::SingleLine) {
3369 cx.propagate_action();
3370 return;
3371 }
3372
3373 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3374 let mut selections = self.local_selections::<Point>(cx);
3375 for selection in &mut selections {
3376 let start = selection.start.to_display_point(&display_map);
3377 let end = selection.end.to_display_point(&display_map);
3378 if start != end {
3379 selection.goal = SelectionGoal::None;
3380 }
3381
3382 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3383 let cursor = start.to_point(&display_map);
3384 selection.start = cursor;
3385 selection.end = cursor;
3386 selection.goal = goal;
3387 selection.reversed = false;
3388 }
3389 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3390 }
3391
3392 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3393 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3394 let mut selections = self.local_selections::<Point>(cx);
3395 for selection in &mut selections {
3396 let head = selection.head().to_display_point(&display_map);
3397 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3398 let cursor = head.to_point(&display_map);
3399 selection.set_head(cursor);
3400 selection.goal = goal;
3401 }
3402 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3403 }
3404
3405 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3406 self.take_rename(cx);
3407
3408 if let Some(context_menu) = self.context_menu.as_mut() {
3409 if context_menu.select_next(cx) {
3410 return;
3411 }
3412 }
3413
3414 if matches!(self.mode, EditorMode::SingleLine) {
3415 cx.propagate_action();
3416 return;
3417 }
3418
3419 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3420 let mut selections = self.local_selections::<Point>(cx);
3421 for selection in &mut selections {
3422 let start = selection.start.to_display_point(&display_map);
3423 let end = selection.end.to_display_point(&display_map);
3424 if start != end {
3425 selection.goal = SelectionGoal::None;
3426 }
3427
3428 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3429 let cursor = start.to_point(&display_map);
3430 selection.start = cursor;
3431 selection.end = cursor;
3432 selection.goal = goal;
3433 selection.reversed = false;
3434 }
3435 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3436 }
3437
3438 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3439 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3440 let mut selections = self.local_selections::<Point>(cx);
3441 for selection in &mut selections {
3442 let head = selection.head().to_display_point(&display_map);
3443 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3444 let cursor = head.to_point(&display_map);
3445 selection.set_head(cursor);
3446 selection.goal = goal;
3447 }
3448 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3449 }
3450
3451 pub fn move_to_previous_word_boundary(
3452 &mut self,
3453 _: &MoveToPreviousWordBoundary,
3454 cx: &mut ViewContext<Self>,
3455 ) {
3456 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3457 let mut selections = self.local_selections::<Point>(cx);
3458 for selection in &mut selections {
3459 let head = selection.head().to_display_point(&display_map);
3460 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3461 selection.start = cursor.clone();
3462 selection.end = cursor;
3463 selection.reversed = false;
3464 selection.goal = SelectionGoal::None;
3465 }
3466 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3467 }
3468
3469 pub fn select_to_previous_word_boundary(
3470 &mut self,
3471 _: &SelectToPreviousWordBoundary,
3472 cx: &mut ViewContext<Self>,
3473 ) {
3474 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3475 let mut selections = self.local_selections::<Point>(cx);
3476 for selection in &mut selections {
3477 let head = selection.head().to_display_point(&display_map);
3478 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3479 selection.set_head(cursor);
3480 selection.goal = SelectionGoal::None;
3481 }
3482 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3483 }
3484
3485 pub fn delete_to_previous_word_boundary(
3486 &mut self,
3487 _: &DeleteToPreviousWordBoundary,
3488 cx: &mut ViewContext<Self>,
3489 ) {
3490 self.start_transaction(cx);
3491 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3492 let mut selections = self.local_selections::<Point>(cx);
3493 for selection in &mut selections {
3494 if selection.is_empty() {
3495 let head = selection.head().to_display_point(&display_map);
3496 let cursor =
3497 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3498 selection.set_head(cursor);
3499 selection.goal = SelectionGoal::None;
3500 }
3501 }
3502 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3503 self.insert("", cx);
3504 self.end_transaction(cx);
3505 }
3506
3507 pub fn move_to_next_word_boundary(
3508 &mut self,
3509 _: &MoveToNextWordBoundary,
3510 cx: &mut ViewContext<Self>,
3511 ) {
3512 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3513 let mut selections = self.local_selections::<Point>(cx);
3514 for selection in &mut selections {
3515 let head = selection.head().to_display_point(&display_map);
3516 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3517 selection.start = cursor;
3518 selection.end = cursor;
3519 selection.reversed = false;
3520 selection.goal = SelectionGoal::None;
3521 }
3522 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3523 }
3524
3525 pub fn select_to_next_word_boundary(
3526 &mut self,
3527 _: &SelectToNextWordBoundary,
3528 cx: &mut ViewContext<Self>,
3529 ) {
3530 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3531 let mut selections = self.local_selections::<Point>(cx);
3532 for selection in &mut selections {
3533 let head = selection.head().to_display_point(&display_map);
3534 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3535 selection.set_head(cursor);
3536 selection.goal = SelectionGoal::None;
3537 }
3538 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3539 }
3540
3541 pub fn delete_to_next_word_boundary(
3542 &mut self,
3543 _: &DeleteToNextWordBoundary,
3544 cx: &mut ViewContext<Self>,
3545 ) {
3546 self.start_transaction(cx);
3547 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3548 let mut selections = self.local_selections::<Point>(cx);
3549 for selection in &mut selections {
3550 if selection.is_empty() {
3551 let head = selection.head().to_display_point(&display_map);
3552 let cursor =
3553 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3554 selection.set_head(cursor);
3555 selection.goal = SelectionGoal::None;
3556 }
3557 }
3558 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3559 self.insert("", cx);
3560 self.end_transaction(cx);
3561 }
3562
3563 pub fn move_to_beginning_of_line(
3564 &mut self,
3565 _: &MoveToBeginningOfLine,
3566 cx: &mut ViewContext<Self>,
3567 ) {
3568 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3569 let mut selections = self.local_selections::<Point>(cx);
3570 for selection in &mut selections {
3571 let head = selection.head().to_display_point(&display_map);
3572 let new_head = movement::line_beginning(&display_map, head, true);
3573 let cursor = new_head.to_point(&display_map);
3574 selection.start = cursor;
3575 selection.end = cursor;
3576 selection.reversed = false;
3577 selection.goal = SelectionGoal::None;
3578 }
3579 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3580 }
3581
3582 pub fn select_to_beginning_of_line(
3583 &mut self,
3584 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3585 cx: &mut ViewContext<Self>,
3586 ) {
3587 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3588 let mut selections = self.local_selections::<Point>(cx);
3589 for selection in &mut selections {
3590 let head = selection.head().to_display_point(&display_map);
3591 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3592 selection.set_head(new_head.to_point(&display_map));
3593 selection.goal = SelectionGoal::None;
3594 }
3595 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3596 }
3597
3598 pub fn delete_to_beginning_of_line(
3599 &mut self,
3600 _: &DeleteToBeginningOfLine,
3601 cx: &mut ViewContext<Self>,
3602 ) {
3603 self.start_transaction(cx);
3604 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3605 self.backspace(&Backspace, cx);
3606 self.end_transaction(cx);
3607 }
3608
3609 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3610 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3611 let mut selections = self.local_selections::<Point>(cx);
3612 {
3613 for selection in &mut selections {
3614 let head = selection.head().to_display_point(&display_map);
3615 let new_head = movement::line_end(&display_map, head, true);
3616 let anchor = new_head.to_point(&display_map);
3617 selection.start = anchor.clone();
3618 selection.end = anchor;
3619 selection.reversed = false;
3620 selection.goal = SelectionGoal::None;
3621 }
3622 }
3623 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3624 }
3625
3626 pub fn select_to_end_of_line(
3627 &mut self,
3628 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3629 cx: &mut ViewContext<Self>,
3630 ) {
3631 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3632 let mut selections = self.local_selections::<Point>(cx);
3633 for selection in &mut selections {
3634 let head = selection.head().to_display_point(&display_map);
3635 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3636 selection.set_head(new_head.to_point(&display_map));
3637 selection.goal = SelectionGoal::None;
3638 }
3639 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3640 }
3641
3642 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3643 self.start_transaction(cx);
3644 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3645 self.delete(&Delete, cx);
3646 self.end_transaction(cx);
3647 }
3648
3649 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3650 self.start_transaction(cx);
3651 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3652 self.cut(&Cut, cx);
3653 self.end_transaction(cx);
3654 }
3655
3656 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3657 if matches!(self.mode, EditorMode::SingleLine) {
3658 cx.propagate_action();
3659 return;
3660 }
3661
3662 let selection = Selection {
3663 id: post_inc(&mut self.next_selection_id),
3664 start: 0,
3665 end: 0,
3666 reversed: false,
3667 goal: SelectionGoal::None,
3668 };
3669 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3670 }
3671
3672 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3673 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3674 selection.set_head(Point::zero());
3675 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3676 }
3677
3678 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3679 if matches!(self.mode, EditorMode::SingleLine) {
3680 cx.propagate_action();
3681 return;
3682 }
3683
3684 let cursor = self.buffer.read(cx).read(cx).len();
3685 let selection = Selection {
3686 id: post_inc(&mut self.next_selection_id),
3687 start: cursor,
3688 end: cursor,
3689 reversed: false,
3690 goal: SelectionGoal::None,
3691 };
3692 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3693 }
3694
3695 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3696 self.nav_history = nav_history;
3697 }
3698
3699 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3700 self.nav_history.as_ref()
3701 }
3702
3703 fn push_to_nav_history(
3704 &self,
3705 position: Anchor,
3706 new_position: Option<Point>,
3707 cx: &mut ViewContext<Self>,
3708 ) {
3709 if let Some(nav_history) = &self.nav_history {
3710 let buffer = self.buffer.read(cx).read(cx);
3711 let offset = position.to_offset(&buffer);
3712 let point = position.to_point(&buffer);
3713 drop(buffer);
3714
3715 if let Some(new_position) = new_position {
3716 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3717 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3718 return;
3719 }
3720 }
3721
3722 nav_history.push(Some(NavigationData {
3723 anchor: position,
3724 offset,
3725 }));
3726 }
3727 }
3728
3729 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3730 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3731 selection.set_head(self.buffer.read(cx).read(cx).len());
3732 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3733 }
3734
3735 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3736 let selection = Selection {
3737 id: post_inc(&mut self.next_selection_id),
3738 start: 0,
3739 end: self.buffer.read(cx).read(cx).len(),
3740 reversed: false,
3741 goal: SelectionGoal::None,
3742 };
3743 self.update_selections(vec![selection], None, cx);
3744 }
3745
3746 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3747 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3748 let mut selections = self.local_selections::<Point>(cx);
3749 let max_point = display_map.buffer_snapshot.max_point();
3750 for selection in &mut selections {
3751 let rows = selection.spanned_rows(true, &display_map);
3752 selection.start = Point::new(rows.start, 0);
3753 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3754 selection.reversed = false;
3755 }
3756 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3757 }
3758
3759 pub fn split_selection_into_lines(
3760 &mut self,
3761 _: &SplitSelectionIntoLines,
3762 cx: &mut ViewContext<Self>,
3763 ) {
3764 let mut to_unfold = Vec::new();
3765 let mut new_selections = Vec::new();
3766 {
3767 let selections = self.local_selections::<Point>(cx);
3768 let buffer = self.buffer.read(cx).read(cx);
3769 for selection in selections {
3770 for row in selection.start.row..selection.end.row {
3771 let cursor = Point::new(row, buffer.line_len(row));
3772 new_selections.push(Selection {
3773 id: post_inc(&mut self.next_selection_id),
3774 start: cursor,
3775 end: cursor,
3776 reversed: false,
3777 goal: SelectionGoal::None,
3778 });
3779 }
3780 new_selections.push(Selection {
3781 id: selection.id,
3782 start: selection.end,
3783 end: selection.end,
3784 reversed: false,
3785 goal: SelectionGoal::None,
3786 });
3787 to_unfold.push(selection.start..selection.end);
3788 }
3789 }
3790 self.unfold_ranges(to_unfold, cx);
3791 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3792 }
3793
3794 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3795 self.add_selection(true, cx);
3796 }
3797
3798 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3799 self.add_selection(false, cx);
3800 }
3801
3802 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3803 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3804 let mut selections = self.local_selections::<Point>(cx);
3805 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3806 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3807 let range = oldest_selection.display_range(&display_map).sorted();
3808 let columns = cmp::min(range.start.column(), range.end.column())
3809 ..cmp::max(range.start.column(), range.end.column());
3810
3811 selections.clear();
3812 let mut stack = Vec::new();
3813 for row in range.start.row()..=range.end.row() {
3814 if let Some(selection) = self.build_columnar_selection(
3815 &display_map,
3816 row,
3817 &columns,
3818 oldest_selection.reversed,
3819 ) {
3820 stack.push(selection.id);
3821 selections.push(selection);
3822 }
3823 }
3824
3825 if above {
3826 stack.reverse();
3827 }
3828
3829 AddSelectionsState { above, stack }
3830 });
3831
3832 let last_added_selection = *state.stack.last().unwrap();
3833 let mut new_selections = Vec::new();
3834 if above == state.above {
3835 let end_row = if above {
3836 0
3837 } else {
3838 display_map.max_point().row()
3839 };
3840
3841 'outer: for selection in selections {
3842 if selection.id == last_added_selection {
3843 let range = selection.display_range(&display_map).sorted();
3844 debug_assert_eq!(range.start.row(), range.end.row());
3845 let mut row = range.start.row();
3846 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3847 {
3848 start..end
3849 } else {
3850 cmp::min(range.start.column(), range.end.column())
3851 ..cmp::max(range.start.column(), range.end.column())
3852 };
3853
3854 while row != end_row {
3855 if above {
3856 row -= 1;
3857 } else {
3858 row += 1;
3859 }
3860
3861 if let Some(new_selection) = self.build_columnar_selection(
3862 &display_map,
3863 row,
3864 &columns,
3865 selection.reversed,
3866 ) {
3867 state.stack.push(new_selection.id);
3868 if above {
3869 new_selections.push(new_selection);
3870 new_selections.push(selection);
3871 } else {
3872 new_selections.push(selection);
3873 new_selections.push(new_selection);
3874 }
3875
3876 continue 'outer;
3877 }
3878 }
3879 }
3880
3881 new_selections.push(selection);
3882 }
3883 } else {
3884 new_selections = selections;
3885 new_selections.retain(|s| s.id != last_added_selection);
3886 state.stack.pop();
3887 }
3888
3889 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3890 if state.stack.len() > 1 {
3891 self.add_selections_state = Some(state);
3892 }
3893 }
3894
3895 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3896 let replace_newest = action.0;
3897 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3898 let buffer = &display_map.buffer_snapshot;
3899 let mut selections = self.local_selections::<usize>(cx);
3900 if let Some(mut select_next_state) = self.select_next_state.take() {
3901 let query = &select_next_state.query;
3902 if !select_next_state.done {
3903 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3904 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3905 let mut next_selected_range = None;
3906
3907 let bytes_after_last_selection =
3908 buffer.bytes_in_range(last_selection.end..buffer.len());
3909 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3910 let query_matches = query
3911 .stream_find_iter(bytes_after_last_selection)
3912 .map(|result| (last_selection.end, result))
3913 .chain(
3914 query
3915 .stream_find_iter(bytes_before_first_selection)
3916 .map(|result| (0, result)),
3917 );
3918 for (start_offset, query_match) in query_matches {
3919 let query_match = query_match.unwrap(); // can only fail due to I/O
3920 let offset_range =
3921 start_offset + query_match.start()..start_offset + query_match.end();
3922 let display_range = offset_range.start.to_display_point(&display_map)
3923 ..offset_range.end.to_display_point(&display_map);
3924
3925 if !select_next_state.wordwise
3926 || (!movement::is_inside_word(&display_map, display_range.start)
3927 && !movement::is_inside_word(&display_map, display_range.end))
3928 {
3929 next_selected_range = Some(offset_range);
3930 break;
3931 }
3932 }
3933
3934 if let Some(next_selected_range) = next_selected_range {
3935 if replace_newest {
3936 if let Some(newest_id) =
3937 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3938 {
3939 selections.retain(|s| s.id != newest_id);
3940 }
3941 }
3942 selections.push(Selection {
3943 id: post_inc(&mut self.next_selection_id),
3944 start: next_selected_range.start,
3945 end: next_selected_range.end,
3946 reversed: false,
3947 goal: SelectionGoal::None,
3948 });
3949 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3950 } else {
3951 select_next_state.done = true;
3952 }
3953 }
3954
3955 self.select_next_state = Some(select_next_state);
3956 } else if selections.len() == 1 {
3957 let selection = selections.last_mut().unwrap();
3958 if selection.start == selection.end {
3959 let word_range = movement::surrounding_word(
3960 &display_map,
3961 selection.start.to_display_point(&display_map),
3962 );
3963 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3964 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3965 selection.goal = SelectionGoal::None;
3966 selection.reversed = false;
3967
3968 let query = buffer
3969 .text_for_range(selection.start..selection.end)
3970 .collect::<String>();
3971 let select_state = SelectNextState {
3972 query: AhoCorasick::new_auto_configured(&[query]),
3973 wordwise: true,
3974 done: false,
3975 };
3976 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3977 self.select_next_state = Some(select_state);
3978 } else {
3979 let query = buffer
3980 .text_for_range(selection.start..selection.end)
3981 .collect::<String>();
3982 self.select_next_state = Some(SelectNextState {
3983 query: AhoCorasick::new_auto_configured(&[query]),
3984 wordwise: false,
3985 done: false,
3986 });
3987 self.select_next(action, cx);
3988 }
3989 }
3990 }
3991
3992 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3993 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3994 // as that portion won't be used for detecting if a line is a comment.
3995 let full_comment_prefix =
3996 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3997 prefix.to_string()
3998 } else {
3999 return;
4000 };
4001 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4002 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4003
4004 self.start_transaction(cx);
4005 let mut selections = self.local_selections::<Point>(cx);
4006 let mut all_selection_lines_are_comments = true;
4007 let mut edit_ranges = Vec::new();
4008 let mut last_toggled_row = None;
4009 self.buffer.update(cx, |buffer, cx| {
4010 for selection in &mut selections {
4011 edit_ranges.clear();
4012 let snapshot = buffer.snapshot(cx);
4013
4014 let end_row =
4015 if selection.end.row > selection.start.row && selection.end.column == 0 {
4016 selection.end.row
4017 } else {
4018 selection.end.row + 1
4019 };
4020
4021 for row in selection.start.row..end_row {
4022 // If multiple selections contain a given row, avoid processing that
4023 // row more than once.
4024 if last_toggled_row == Some(row) {
4025 continue;
4026 } else {
4027 last_toggled_row = Some(row);
4028 }
4029
4030 if snapshot.is_line_blank(row) {
4031 continue;
4032 }
4033
4034 let start = Point::new(row, snapshot.indent_column_for_line(row));
4035 let mut line_bytes = snapshot
4036 .bytes_in_range(start..snapshot.max_point())
4037 .flatten()
4038 .copied();
4039
4040 // If this line currently begins with the line comment prefix, then record
4041 // the range containing the prefix.
4042 if all_selection_lines_are_comments
4043 && line_bytes
4044 .by_ref()
4045 .take(comment_prefix.len())
4046 .eq(comment_prefix.bytes())
4047 {
4048 // Include any whitespace that matches the comment prefix.
4049 let matching_whitespace_len = line_bytes
4050 .zip(comment_prefix_whitespace.bytes())
4051 .take_while(|(a, b)| a == b)
4052 .count() as u32;
4053 let end = Point::new(
4054 row,
4055 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4056 );
4057 edit_ranges.push(start..end);
4058 }
4059 // If this line does not begin with the line comment prefix, then record
4060 // the position where the prefix should be inserted.
4061 else {
4062 all_selection_lines_are_comments = false;
4063 edit_ranges.push(start..start);
4064 }
4065 }
4066
4067 if !edit_ranges.is_empty() {
4068 if all_selection_lines_are_comments {
4069 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4070 } else {
4071 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4072 let edit_ranges = edit_ranges.iter().map(|range| {
4073 let position = Point::new(range.start.row, min_column);
4074 position..position
4075 });
4076 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4077 }
4078 }
4079 }
4080 });
4081
4082 self.update_selections(
4083 self.local_selections::<usize>(cx),
4084 Some(Autoscroll::Fit),
4085 cx,
4086 );
4087 self.end_transaction(cx);
4088 }
4089
4090 pub fn select_larger_syntax_node(
4091 &mut self,
4092 _: &SelectLargerSyntaxNode,
4093 cx: &mut ViewContext<Self>,
4094 ) {
4095 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4096 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4097 let buffer = self.buffer.read(cx).snapshot(cx);
4098
4099 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4100 let mut selected_larger_node = false;
4101 let new_selections = old_selections
4102 .iter()
4103 .map(|selection| {
4104 let old_range = selection.start..selection.end;
4105 let mut new_range = old_range.clone();
4106 while let Some(containing_range) =
4107 buffer.range_for_syntax_ancestor(new_range.clone())
4108 {
4109 new_range = containing_range;
4110 if !display_map.intersects_fold(new_range.start)
4111 && !display_map.intersects_fold(new_range.end)
4112 {
4113 break;
4114 }
4115 }
4116
4117 selected_larger_node |= new_range != old_range;
4118 Selection {
4119 id: selection.id,
4120 start: new_range.start,
4121 end: new_range.end,
4122 goal: SelectionGoal::None,
4123 reversed: selection.reversed,
4124 }
4125 })
4126 .collect::<Vec<_>>();
4127
4128 if selected_larger_node {
4129 stack.push(old_selections);
4130 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4131 }
4132 self.select_larger_syntax_node_stack = stack;
4133 }
4134
4135 pub fn select_smaller_syntax_node(
4136 &mut self,
4137 _: &SelectSmallerSyntaxNode,
4138 cx: &mut ViewContext<Self>,
4139 ) {
4140 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4141 if let Some(selections) = stack.pop() {
4142 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4143 }
4144 self.select_larger_syntax_node_stack = stack;
4145 }
4146
4147 pub fn move_to_enclosing_bracket(
4148 &mut self,
4149 _: &MoveToEnclosingBracket,
4150 cx: &mut ViewContext<Self>,
4151 ) {
4152 let mut selections = self.local_selections::<usize>(cx);
4153 let buffer = self.buffer.read(cx).snapshot(cx);
4154 for selection in &mut selections {
4155 if let Some((open_range, close_range)) =
4156 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4157 {
4158 let close_range = close_range.to_inclusive();
4159 let destination = if close_range.contains(&selection.start)
4160 && close_range.contains(&selection.end)
4161 {
4162 open_range.end
4163 } else {
4164 *close_range.start()
4165 };
4166 selection.start = destination;
4167 selection.end = destination;
4168 }
4169 }
4170
4171 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4172 }
4173
4174 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4175 let buffer = self.buffer.read(cx).snapshot(cx);
4176 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4177 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4178 active_diagnostics
4179 .primary_range
4180 .to_offset(&buffer)
4181 .to_inclusive()
4182 });
4183 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4184 if active_primary_range.contains(&selection.head()) {
4185 *active_primary_range.end()
4186 } else {
4187 selection.head()
4188 }
4189 } else {
4190 selection.head()
4191 };
4192
4193 loop {
4194 let next_group = buffer
4195 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4196 .find_map(|entry| {
4197 if entry.diagnostic.is_primary
4198 && !entry.range.is_empty()
4199 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4200 {
4201 Some((entry.range, entry.diagnostic.group_id))
4202 } else {
4203 None
4204 }
4205 });
4206
4207 if let Some((primary_range, group_id)) = next_group {
4208 self.activate_diagnostics(group_id, cx);
4209 self.update_selections(
4210 vec![Selection {
4211 id: selection.id,
4212 start: primary_range.start,
4213 end: primary_range.start,
4214 reversed: false,
4215 goal: SelectionGoal::None,
4216 }],
4217 Some(Autoscroll::Center),
4218 cx,
4219 );
4220 break;
4221 } else if search_start == 0 {
4222 break;
4223 } else {
4224 // Cycle around to the start of the buffer, potentially moving back to the start of
4225 // the currently active diagnostic.
4226 search_start = 0;
4227 active_primary_range.take();
4228 }
4229 }
4230 }
4231
4232 pub fn go_to_definition(
4233 workspace: &mut Workspace,
4234 _: &GoToDefinition,
4235 cx: &mut ViewContext<Workspace>,
4236 ) {
4237 let active_item = workspace.active_item(cx);
4238 let editor_handle = if let Some(editor) = active_item
4239 .as_ref()
4240 .and_then(|item| item.act_as::<Self>(cx))
4241 {
4242 editor
4243 } else {
4244 return;
4245 };
4246
4247 let editor = editor_handle.read(cx);
4248 let head = editor.newest_selection::<usize>(cx).head();
4249 let (buffer, head) =
4250 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4251 text_anchor
4252 } else {
4253 return;
4254 };
4255
4256 let definitions = workspace
4257 .project()
4258 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4259 cx.spawn(|workspace, mut cx| async move {
4260 let definitions = definitions.await?;
4261 workspace.update(&mut cx, |workspace, cx| {
4262 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4263 for definition in definitions {
4264 let range = definition.range.to_offset(definition.buffer.read(cx));
4265 let target_editor_handle = workspace
4266 .open_item(BufferItemHandle(definition.buffer), cx)
4267 .downcast::<Self>()
4268 .unwrap();
4269
4270 target_editor_handle.update(cx, |target_editor, cx| {
4271 // When selecting a definition in a different buffer, disable the nav history
4272 // to avoid creating a history entry at the previous cursor location.
4273 if editor_handle != target_editor_handle {
4274 nav_history.borrow_mut().disable();
4275 }
4276 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4277 nav_history.borrow_mut().enable();
4278 });
4279 }
4280 });
4281
4282 Ok::<(), anyhow::Error>(())
4283 })
4284 .detach_and_log_err(cx);
4285 }
4286
4287 pub fn find_all_references(
4288 workspace: &mut Workspace,
4289 _: &FindAllReferences,
4290 cx: &mut ViewContext<Workspace>,
4291 ) -> Option<Task<Result<()>>> {
4292 let active_item = workspace.active_item(cx)?;
4293 let editor_handle = active_item.act_as::<Self>(cx)?;
4294
4295 let editor = editor_handle.read(cx);
4296 let head = editor.newest_selection::<usize>(cx).head();
4297 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4298 let replica_id = editor.replica_id(cx);
4299
4300 let references = workspace
4301 .project()
4302 .update(cx, |project, cx| project.references(&buffer, head, cx));
4303 Some(cx.spawn(|workspace, mut cx| async move {
4304 let mut locations = references.await?;
4305 if locations.is_empty() {
4306 return Ok(());
4307 }
4308
4309 locations.sort_by_key(|location| location.buffer.id());
4310 let mut locations = locations.into_iter().peekable();
4311 let mut ranges_to_highlight = Vec::new();
4312
4313 let excerpt_buffer = cx.add_model(|cx| {
4314 let mut symbol_name = None;
4315 let mut multibuffer = MultiBuffer::new(replica_id);
4316 while let Some(location) = locations.next() {
4317 let buffer = location.buffer.read(cx);
4318 let mut ranges_for_buffer = Vec::new();
4319 let range = location.range.to_offset(buffer);
4320 ranges_for_buffer.push(range.clone());
4321 if symbol_name.is_none() {
4322 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4323 }
4324
4325 while let Some(next_location) = locations.peek() {
4326 if next_location.buffer == location.buffer {
4327 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4328 locations.next();
4329 } else {
4330 break;
4331 }
4332 }
4333
4334 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4335 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4336 location.buffer.clone(),
4337 ranges_for_buffer,
4338 1,
4339 cx,
4340 ));
4341 }
4342 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4343 });
4344
4345 workspace.update(&mut cx, |workspace, cx| {
4346 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4347 if let Some(editor) = editor.act_as::<Self>(cx) {
4348 editor.update(cx, |editor, cx| {
4349 let color = editor.style(cx).highlighted_line_background;
4350 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4351 });
4352 }
4353 });
4354
4355 Ok(())
4356 }))
4357 }
4358
4359 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4360 use language::ToOffset as _;
4361
4362 let project = self.project.clone()?;
4363 let selection = self.newest_anchor_selection().clone();
4364 let (cursor_buffer, cursor_buffer_position) = self
4365 .buffer
4366 .read(cx)
4367 .text_anchor_for_position(selection.head(), cx)?;
4368 let (tail_buffer, tail_buffer_position) = self
4369 .buffer
4370 .read(cx)
4371 .text_anchor_for_position(selection.tail(), cx)?;
4372 if tail_buffer != cursor_buffer {
4373 return None;
4374 }
4375
4376 let snapshot = cursor_buffer.read(cx).snapshot();
4377 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4378 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4379 let prepare_rename = project.update(cx, |project, cx| {
4380 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4381 });
4382
4383 Some(cx.spawn(|this, mut cx| async move {
4384 if let Some(rename_range) = prepare_rename.await? {
4385 let rename_buffer_range = rename_range.to_offset(&snapshot);
4386 let cursor_offset_in_rename_range =
4387 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4388 let tail_offset_in_rename_range =
4389 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4390
4391 this.update(&mut cx, |this, cx| {
4392 this.take_rename(cx);
4393 let style = this.style(cx);
4394 let buffer = this.buffer.read(cx).read(cx);
4395 let cursor_offset = selection.head().to_offset(&buffer);
4396 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4397 let rename_end = rename_start + rename_buffer_range.len();
4398 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4399 let old_name = buffer
4400 .text_for_range(rename_start..rename_end)
4401 .collect::<String>();
4402 drop(buffer);
4403
4404 // Position the selection in the rename editor so that it matches the current selection.
4405 let rename_editor = cx.add_view(|cx| {
4406 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4407 editor
4408 .buffer
4409 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4410 editor.select_ranges(
4411 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4412 None,
4413 cx,
4414 );
4415 editor.highlight_ranges::<Rename>(
4416 vec![Anchor::min()..Anchor::max()],
4417 style.diff_background_inserted,
4418 cx,
4419 );
4420 editor
4421 });
4422 this.highlight_ranges::<Rename>(
4423 vec![range.clone()],
4424 style.diff_background_deleted,
4425 cx,
4426 );
4427 this.update_selections(
4428 vec![Selection {
4429 id: selection.id,
4430 start: rename_end,
4431 end: rename_end,
4432 reversed: false,
4433 goal: SelectionGoal::None,
4434 }],
4435 None,
4436 cx,
4437 );
4438 cx.focus(&rename_editor);
4439 let block_id = this.insert_blocks(
4440 [BlockProperties {
4441 position: range.start.clone(),
4442 height: 1,
4443 render: Arc::new({
4444 let editor = rename_editor.clone();
4445 move |cx: &BlockContext| {
4446 ChildView::new(editor.clone())
4447 .contained()
4448 .with_padding_left(cx.anchor_x)
4449 .boxed()
4450 }
4451 }),
4452 disposition: BlockDisposition::Below,
4453 }],
4454 cx,
4455 )[0];
4456 this.pending_rename = Some(RenameState {
4457 range,
4458 old_name,
4459 editor: rename_editor,
4460 block_id,
4461 });
4462 });
4463 }
4464
4465 Ok(())
4466 }))
4467 }
4468
4469 pub fn confirm_rename(
4470 workspace: &mut Workspace,
4471 _: &ConfirmRename,
4472 cx: &mut ViewContext<Workspace>,
4473 ) -> Option<Task<Result<()>>> {
4474 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4475
4476 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4477 let rename = editor.take_rename(cx)?;
4478 let buffer = editor.buffer.read(cx);
4479 let (start_buffer, start) =
4480 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4481 let (end_buffer, end) =
4482 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4483 if start_buffer == end_buffer {
4484 let new_name = rename.editor.read(cx).text(cx);
4485 Some((start_buffer, start..end, rename.old_name, new_name))
4486 } else {
4487 None
4488 }
4489 })?;
4490
4491 let rename = workspace.project().clone().update(cx, |project, cx| {
4492 project.perform_rename(
4493 buffer.clone(),
4494 range.start.clone(),
4495 new_name.clone(),
4496 true,
4497 cx,
4498 )
4499 });
4500
4501 Some(cx.spawn(|workspace, cx| async move {
4502 let project_transaction = rename.await?;
4503 Self::open_project_transaction(
4504 editor,
4505 workspace,
4506 project_transaction,
4507 format!("Rename: {} → {}", old_name, new_name),
4508 cx,
4509 )
4510 .await
4511 }))
4512 }
4513
4514 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4515 let rename = self.pending_rename.take()?;
4516 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4517 self.clear_highlighted_ranges::<Rename>(cx);
4518
4519 let editor = rename.editor.read(cx);
4520 let snapshot = self.buffer.read(cx).snapshot(cx);
4521 let selection = editor.newest_selection_with_snapshot::<usize>(&snapshot);
4522
4523 // Update the selection to match the position of the selection inside
4524 // the rename editor.
4525 let rename_range = rename.range.to_offset(&snapshot);
4526 let start = snapshot
4527 .clip_offset(rename_range.start + selection.start, Bias::Left)
4528 .min(rename_range.end);
4529 let end = snapshot
4530 .clip_offset(rename_range.start + selection.end, Bias::Left)
4531 .min(rename_range.end);
4532 self.update_selections(
4533 vec![Selection {
4534 id: self.newest_anchor_selection().id,
4535 start,
4536 end,
4537 reversed: selection.reversed,
4538 goal: SelectionGoal::None,
4539 }],
4540 None,
4541 cx,
4542 );
4543
4544 Some(rename)
4545 }
4546
4547 fn invalidate_rename_range(
4548 &mut self,
4549 buffer: &MultiBufferSnapshot,
4550 cx: &mut ViewContext<Self>,
4551 ) {
4552 if let Some(rename) = self.pending_rename.as_ref() {
4553 if self.selections.len() == 1 {
4554 let head = self.selections[0].head().to_offset(buffer);
4555 let range = rename.range.to_offset(buffer).to_inclusive();
4556 if range.contains(&head) {
4557 return;
4558 }
4559 }
4560 let rename = self.pending_rename.take().unwrap();
4561 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4562 self.clear_highlighted_ranges::<Rename>(cx);
4563 }
4564 }
4565
4566 #[cfg(any(test, feature = "test-support"))]
4567 pub fn pending_rename(&self) -> Option<&RenameState> {
4568 self.pending_rename.as_ref()
4569 }
4570
4571 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4572 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4573 let buffer = self.buffer.read(cx).snapshot(cx);
4574 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4575 let is_valid = buffer
4576 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4577 .any(|entry| {
4578 entry.diagnostic.is_primary
4579 && !entry.range.is_empty()
4580 && entry.range.start == primary_range_start
4581 && entry.diagnostic.message == active_diagnostics.primary_message
4582 });
4583
4584 if is_valid != active_diagnostics.is_valid {
4585 active_diagnostics.is_valid = is_valid;
4586 let mut new_styles = HashMap::default();
4587 for (block_id, diagnostic) in &active_diagnostics.blocks {
4588 new_styles.insert(
4589 *block_id,
4590 diagnostic_block_renderer(
4591 diagnostic.clone(),
4592 is_valid,
4593 self.settings.clone(),
4594 ),
4595 );
4596 }
4597 self.display_map
4598 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4599 }
4600 }
4601 }
4602
4603 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4604 self.dismiss_diagnostics(cx);
4605 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4606 let buffer = self.buffer.read(cx).snapshot(cx);
4607
4608 let mut primary_range = None;
4609 let mut primary_message = None;
4610 let mut group_end = Point::zero();
4611 let diagnostic_group = buffer
4612 .diagnostic_group::<Point>(group_id)
4613 .map(|entry| {
4614 if entry.range.end > group_end {
4615 group_end = entry.range.end;
4616 }
4617 if entry.diagnostic.is_primary {
4618 primary_range = Some(entry.range.clone());
4619 primary_message = Some(entry.diagnostic.message.clone());
4620 }
4621 entry
4622 })
4623 .collect::<Vec<_>>();
4624 let primary_range = primary_range.unwrap();
4625 let primary_message = primary_message.unwrap();
4626 let primary_range =
4627 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4628
4629 let blocks = display_map
4630 .insert_blocks(
4631 diagnostic_group.iter().map(|entry| {
4632 let diagnostic = entry.diagnostic.clone();
4633 let message_height = diagnostic.message.lines().count() as u8;
4634 BlockProperties {
4635 position: buffer.anchor_after(entry.range.start),
4636 height: message_height,
4637 render: diagnostic_block_renderer(
4638 diagnostic,
4639 true,
4640 self.settings.clone(),
4641 ),
4642 disposition: BlockDisposition::Below,
4643 }
4644 }),
4645 cx,
4646 )
4647 .into_iter()
4648 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4649 .collect();
4650
4651 Some(ActiveDiagnosticGroup {
4652 primary_range,
4653 primary_message,
4654 blocks,
4655 is_valid: true,
4656 })
4657 });
4658 }
4659
4660 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4661 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4662 self.display_map.update(cx, |display_map, cx| {
4663 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4664 });
4665 cx.notify();
4666 }
4667 }
4668
4669 fn build_columnar_selection(
4670 &mut self,
4671 display_map: &DisplaySnapshot,
4672 row: u32,
4673 columns: &Range<u32>,
4674 reversed: bool,
4675 ) -> Option<Selection<Point>> {
4676 let is_empty = columns.start == columns.end;
4677 let line_len = display_map.line_len(row);
4678 if columns.start < line_len || (is_empty && columns.start == line_len) {
4679 let start = DisplayPoint::new(row, columns.start);
4680 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4681 Some(Selection {
4682 id: post_inc(&mut self.next_selection_id),
4683 start: start.to_point(display_map),
4684 end: end.to_point(display_map),
4685 reversed,
4686 goal: SelectionGoal::ColumnRange {
4687 start: columns.start,
4688 end: columns.end,
4689 },
4690 })
4691 } else {
4692 None
4693 }
4694 }
4695
4696 pub fn local_selections_in_range(
4697 &self,
4698 range: Range<Anchor>,
4699 display_map: &DisplaySnapshot,
4700 ) -> Vec<Selection<Point>> {
4701 let buffer = &display_map.buffer_snapshot;
4702
4703 let start_ix = match self
4704 .selections
4705 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4706 {
4707 Ok(ix) | Err(ix) => ix,
4708 };
4709 let end_ix = match self
4710 .selections
4711 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4712 {
4713 Ok(ix) => ix + 1,
4714 Err(ix) => ix,
4715 };
4716
4717 fn point_selection(
4718 selection: &Selection<Anchor>,
4719 buffer: &MultiBufferSnapshot,
4720 ) -> Selection<Point> {
4721 let start = selection.start.to_point(&buffer);
4722 let end = selection.end.to_point(&buffer);
4723 Selection {
4724 id: selection.id,
4725 start,
4726 end,
4727 reversed: selection.reversed,
4728 goal: selection.goal,
4729 }
4730 }
4731
4732 self.selections[start_ix..end_ix]
4733 .iter()
4734 .chain(
4735 self.pending_selection
4736 .as_ref()
4737 .map(|pending| &pending.selection),
4738 )
4739 .map(|s| point_selection(s, &buffer))
4740 .collect()
4741 }
4742
4743 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4744 where
4745 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4746 {
4747 let buffer = self.buffer.read(cx).snapshot(cx);
4748 let mut selections = self
4749 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4750 .peekable();
4751
4752 let mut pending_selection = self.pending_selection::<D>(&buffer);
4753
4754 iter::from_fn(move || {
4755 if let Some(pending) = pending_selection.as_mut() {
4756 while let Some(next_selection) = selections.peek() {
4757 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4758 let next_selection = selections.next().unwrap();
4759 if next_selection.start < pending.start {
4760 pending.start = next_selection.start;
4761 }
4762 if next_selection.end > pending.end {
4763 pending.end = next_selection.end;
4764 }
4765 } else if next_selection.end < pending.start {
4766 return selections.next();
4767 } else {
4768 break;
4769 }
4770 }
4771
4772 pending_selection.take()
4773 } else {
4774 selections.next()
4775 }
4776 })
4777 .collect()
4778 }
4779
4780 fn resolve_selections<'a, D, I>(
4781 &self,
4782 selections: I,
4783 snapshot: &MultiBufferSnapshot,
4784 ) -> impl 'a + Iterator<Item = Selection<D>>
4785 where
4786 D: TextDimension + Ord + Sub<D, Output = D>,
4787 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4788 {
4789 let (to_summarize, selections) = selections.into_iter().tee();
4790 let mut summaries = snapshot
4791 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4792 .into_iter();
4793 selections.map(move |s| Selection {
4794 id: s.id,
4795 start: summaries.next().unwrap(),
4796 end: summaries.next().unwrap(),
4797 reversed: s.reversed,
4798 goal: s.goal,
4799 })
4800 }
4801
4802 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4803 &self,
4804 snapshot: &MultiBufferSnapshot,
4805 ) -> Option<Selection<D>> {
4806 self.pending_selection
4807 .as_ref()
4808 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4809 }
4810
4811 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4812 &self,
4813 selection: &Selection<Anchor>,
4814 buffer: &MultiBufferSnapshot,
4815 ) -> Selection<D> {
4816 Selection {
4817 id: selection.id,
4818 start: selection.start.summary::<D>(&buffer),
4819 end: selection.end.summary::<D>(&buffer),
4820 reversed: selection.reversed,
4821 goal: selection.goal,
4822 }
4823 }
4824
4825 fn selection_count<'a>(&self) -> usize {
4826 let mut count = self.selections.len();
4827 if self.pending_selection.is_some() {
4828 count += 1;
4829 }
4830 count
4831 }
4832
4833 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4834 &self,
4835 cx: &AppContext,
4836 ) -> Selection<D> {
4837 let snapshot = self.buffer.read(cx).read(cx);
4838 self.selections
4839 .iter()
4840 .min_by_key(|s| s.id)
4841 .map(|selection| self.resolve_selection(selection, &snapshot))
4842 .or_else(|| self.pending_selection(&snapshot))
4843 .unwrap()
4844 }
4845
4846 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4847 &self,
4848 cx: &AppContext,
4849 ) -> Selection<D> {
4850 self.resolve_selection(
4851 self.newest_anchor_selection(),
4852 &self.buffer.read(cx).read(cx),
4853 )
4854 }
4855
4856 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4857 &self,
4858 snapshot: &MultiBufferSnapshot,
4859 ) -> Selection<D> {
4860 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4861 }
4862
4863 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4864 self.pending_selection
4865 .as_ref()
4866 .map(|s| &s.selection)
4867 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4868 .unwrap()
4869 }
4870
4871 pub fn update_selections<T>(
4872 &mut self,
4873 mut selections: Vec<Selection<T>>,
4874 autoscroll: Option<Autoscroll>,
4875 cx: &mut ViewContext<Self>,
4876 ) where
4877 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4878 {
4879 let buffer = self.buffer.read(cx).snapshot(cx);
4880 selections.sort_unstable_by_key(|s| s.start);
4881
4882 // Merge overlapping selections.
4883 let mut i = 1;
4884 while i < selections.len() {
4885 if selections[i - 1].end >= selections[i].start {
4886 let removed = selections.remove(i);
4887 if removed.start < selections[i - 1].start {
4888 selections[i - 1].start = removed.start;
4889 }
4890 if removed.end > selections[i - 1].end {
4891 selections[i - 1].end = removed.end;
4892 }
4893 } else {
4894 i += 1;
4895 }
4896 }
4897
4898 if let Some(autoscroll) = autoscroll {
4899 self.request_autoscroll(autoscroll, cx);
4900 }
4901
4902 self.set_selections(
4903 Arc::from_iter(selections.into_iter().map(|selection| {
4904 let end_bias = if selection.end > selection.start {
4905 Bias::Left
4906 } else {
4907 Bias::Right
4908 };
4909 Selection {
4910 id: selection.id,
4911 start: buffer.anchor_after(selection.start),
4912 end: buffer.anchor_at(selection.end, end_bias),
4913 reversed: selection.reversed,
4914 goal: selection.goal,
4915 }
4916 })),
4917 None,
4918 cx,
4919 );
4920 }
4921
4922 /// Compute new ranges for any selections that were located in excerpts that have
4923 /// since been removed.
4924 ///
4925 /// Returns a `HashMap` indicating which selections whose former head position
4926 /// was no longer present. The keys of the map are selection ids. The values are
4927 /// the id of the new excerpt where the head of the selection has been moved.
4928 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4929 let snapshot = self.buffer.read(cx).read(cx);
4930 let anchors_with_status = snapshot.refresh_anchors(
4931 self.selections
4932 .iter()
4933 .flat_map(|selection| [&selection.start, &selection.end]),
4934 );
4935 let offsets =
4936 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4937 let offsets = offsets.chunks(2);
4938 let statuses = anchors_with_status
4939 .chunks(2)
4940 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4941
4942 let mut selections_with_lost_position = HashMap::default();
4943 let new_selections = offsets
4944 .zip(statuses)
4945 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4946 let selection = &self.selections[selection_ix];
4947 let kept_head = if selection.reversed {
4948 kept_start
4949 } else {
4950 kept_end
4951 };
4952 if !kept_head {
4953 selections_with_lost_position
4954 .insert(selection.id, selection.head().excerpt_id.clone());
4955 }
4956
4957 Selection {
4958 id: selection.id,
4959 start: offsets[0],
4960 end: offsets[1],
4961 reversed: selection.reversed,
4962 goal: selection.goal,
4963 }
4964 })
4965 .collect();
4966 drop(snapshot);
4967 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4968 selections_with_lost_position
4969 }
4970
4971 fn set_selections(
4972 &mut self,
4973 selections: Arc<[Selection<Anchor>]>,
4974 pending_selection: Option<PendingSelection>,
4975 cx: &mut ViewContext<Self>,
4976 ) {
4977 let old_cursor_position = self.newest_anchor_selection().head();
4978
4979 self.selections = selections;
4980 self.pending_selection = pending_selection;
4981 if self.focused {
4982 self.buffer.update(cx, |buffer, cx| {
4983 buffer.set_active_selections(&self.selections, cx)
4984 });
4985 }
4986
4987 let display_map = self
4988 .display_map
4989 .update(cx, |display_map, cx| display_map.snapshot(cx));
4990 let buffer = &display_map.buffer_snapshot;
4991 self.add_selections_state = None;
4992 self.select_next_state = None;
4993 self.select_larger_syntax_node_stack.clear();
4994 self.autoclose_stack.invalidate(&self.selections, &buffer);
4995 self.snippet_stack.invalidate(&self.selections, &buffer);
4996 self.invalidate_rename_range(&buffer, cx);
4997
4998 let new_cursor_position = self.newest_anchor_selection().head();
4999
5000 self.push_to_nav_history(
5001 old_cursor_position.clone(),
5002 Some(new_cursor_position.to_point(&buffer)),
5003 cx,
5004 );
5005
5006 let completion_menu = match self.context_menu.as_mut() {
5007 Some(ContextMenu::Completions(menu)) => Some(menu),
5008 _ => {
5009 self.context_menu.take();
5010 None
5011 }
5012 };
5013
5014 if let Some(completion_menu) = completion_menu {
5015 let cursor_position = new_cursor_position.to_offset(&buffer);
5016 let (word_range, kind) =
5017 buffer.surrounding_word(completion_menu.initial_position.clone());
5018 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5019 {
5020 let query = Self::completion_query(&buffer, cursor_position);
5021 cx.background()
5022 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5023 self.show_completions(&ShowCompletions, cx);
5024 } else {
5025 self.hide_context_menu(cx);
5026 }
5027 }
5028
5029 if old_cursor_position.to_display_point(&display_map).row()
5030 != new_cursor_position.to_display_point(&display_map).row()
5031 {
5032 self.available_code_actions.take();
5033 }
5034 self.refresh_code_actions(cx);
5035 self.refresh_document_highlights(cx);
5036
5037 self.pause_cursor_blinking(cx);
5038 cx.emit(Event::SelectionsChanged);
5039 }
5040
5041 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5042 self.autoscroll_request = Some(autoscroll);
5043 cx.notify();
5044 }
5045
5046 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5047 self.start_transaction_at(Instant::now(), cx);
5048 }
5049
5050 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5051 self.end_selection(cx);
5052 if let Some(tx_id) = self
5053 .buffer
5054 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5055 {
5056 self.selection_history
5057 .insert(tx_id, (self.selections.clone(), None));
5058 }
5059 }
5060
5061 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5062 self.end_transaction_at(Instant::now(), cx);
5063 }
5064
5065 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5066 if let Some(tx_id) = self
5067 .buffer
5068 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5069 {
5070 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5071 *end_selections = Some(self.selections.clone());
5072 } else {
5073 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5074 }
5075 }
5076 }
5077
5078 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5079 log::info!("Editor::page_up");
5080 }
5081
5082 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5083 log::info!("Editor::page_down");
5084 }
5085
5086 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5087 let mut fold_ranges = Vec::new();
5088
5089 let selections = self.local_selections::<Point>(cx);
5090 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5091 for selection in selections {
5092 let range = selection.display_range(&display_map).sorted();
5093 let buffer_start_row = range.start.to_point(&display_map).row;
5094
5095 for row in (0..=range.end.row()).rev() {
5096 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5097 let fold_range = self.foldable_range_for_line(&display_map, row);
5098 if fold_range.end.row >= buffer_start_row {
5099 fold_ranges.push(fold_range);
5100 if row <= range.start.row() {
5101 break;
5102 }
5103 }
5104 }
5105 }
5106 }
5107
5108 self.fold_ranges(fold_ranges, cx);
5109 }
5110
5111 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5112 let selections = self.local_selections::<Point>(cx);
5113 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5114 let buffer = &display_map.buffer_snapshot;
5115 let ranges = selections
5116 .iter()
5117 .map(|s| {
5118 let range = s.display_range(&display_map).sorted();
5119 let mut start = range.start.to_point(&display_map);
5120 let mut end = range.end.to_point(&display_map);
5121 start.column = 0;
5122 end.column = buffer.line_len(end.row);
5123 start..end
5124 })
5125 .collect::<Vec<_>>();
5126 self.unfold_ranges(ranges, cx);
5127 }
5128
5129 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5130 let max_point = display_map.max_point();
5131 if display_row >= max_point.row() {
5132 false
5133 } else {
5134 let (start_indent, is_blank) = display_map.line_indent(display_row);
5135 if is_blank {
5136 false
5137 } else {
5138 for display_row in display_row + 1..=max_point.row() {
5139 let (indent, is_blank) = display_map.line_indent(display_row);
5140 if !is_blank {
5141 return indent > start_indent;
5142 }
5143 }
5144 false
5145 }
5146 }
5147 }
5148
5149 fn foldable_range_for_line(
5150 &self,
5151 display_map: &DisplaySnapshot,
5152 start_row: u32,
5153 ) -> Range<Point> {
5154 let max_point = display_map.max_point();
5155
5156 let (start_indent, _) = display_map.line_indent(start_row);
5157 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5158 let mut end = None;
5159 for row in start_row + 1..=max_point.row() {
5160 let (indent, is_blank) = display_map.line_indent(row);
5161 if !is_blank && indent <= start_indent {
5162 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5163 break;
5164 }
5165 }
5166
5167 let end = end.unwrap_or(max_point);
5168 return start.to_point(display_map)..end.to_point(display_map);
5169 }
5170
5171 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5172 let selections = self.local_selections::<Point>(cx);
5173 let ranges = selections.into_iter().map(|s| s.start..s.end);
5174 self.fold_ranges(ranges, cx);
5175 }
5176
5177 fn fold_ranges<T: ToOffset>(
5178 &mut self,
5179 ranges: impl IntoIterator<Item = Range<T>>,
5180 cx: &mut ViewContext<Self>,
5181 ) {
5182 let mut ranges = ranges.into_iter().peekable();
5183 if ranges.peek().is_some() {
5184 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5185 self.request_autoscroll(Autoscroll::Fit, cx);
5186 cx.notify();
5187 }
5188 }
5189
5190 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5191 if !ranges.is_empty() {
5192 self.display_map
5193 .update(cx, |map, cx| map.unfold(ranges, cx));
5194 self.request_autoscroll(Autoscroll::Fit, cx);
5195 cx.notify();
5196 }
5197 }
5198
5199 pub fn insert_blocks(
5200 &mut self,
5201 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5202 cx: &mut ViewContext<Self>,
5203 ) -> Vec<BlockId> {
5204 let blocks = self
5205 .display_map
5206 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5207 self.request_autoscroll(Autoscroll::Fit, cx);
5208 blocks
5209 }
5210
5211 pub fn replace_blocks(
5212 &mut self,
5213 blocks: HashMap<BlockId, RenderBlock>,
5214 cx: &mut ViewContext<Self>,
5215 ) {
5216 self.display_map
5217 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5218 self.request_autoscroll(Autoscroll::Fit, cx);
5219 }
5220
5221 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5222 self.display_map.update(cx, |display_map, cx| {
5223 display_map.remove_blocks(block_ids, cx)
5224 });
5225 }
5226
5227 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5228 self.display_map
5229 .update(cx, |map, cx| map.snapshot(cx))
5230 .longest_row()
5231 }
5232
5233 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5234 self.display_map
5235 .update(cx, |map, cx| map.snapshot(cx))
5236 .max_point()
5237 }
5238
5239 pub fn text(&self, cx: &AppContext) -> String {
5240 self.buffer.read(cx).read(cx).text()
5241 }
5242
5243 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5244 self.buffer
5245 .read(cx)
5246 .as_singleton()
5247 .expect("you can only call set_text on editors for singleton buffers")
5248 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5249 }
5250
5251 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5252 self.display_map
5253 .update(cx, |map, cx| map.snapshot(cx))
5254 .text()
5255 }
5256
5257 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5258 let language = self.language(cx);
5259 let settings = self.settings.borrow();
5260 let mode = self
5261 .soft_wrap_mode_override
5262 .unwrap_or_else(|| settings.soft_wrap(language));
5263 match mode {
5264 settings::SoftWrap::None => SoftWrap::None,
5265 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5266 settings::SoftWrap::PreferredLineLength => {
5267 SoftWrap::Column(settings.preferred_line_length(language))
5268 }
5269 }
5270 }
5271
5272 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5273 self.soft_wrap_mode_override = Some(mode);
5274 cx.notify();
5275 }
5276
5277 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5278 self.display_map
5279 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5280 }
5281
5282 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5283 self.highlighted_rows = rows;
5284 }
5285
5286 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5287 self.highlighted_rows.clone()
5288 }
5289
5290 pub fn highlight_ranges<T: 'static>(
5291 &mut self,
5292 ranges: Vec<Range<Anchor>>,
5293 color: Color,
5294 cx: &mut ViewContext<Self>,
5295 ) {
5296 self.highlighted_ranges
5297 .insert(TypeId::of::<T>(), (color, ranges));
5298 cx.notify();
5299 }
5300
5301 pub fn clear_highlighted_ranges<T: 'static>(
5302 &mut self,
5303 cx: &mut ViewContext<Self>,
5304 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5305 cx.notify();
5306 self.highlighted_ranges.remove(&TypeId::of::<T>())
5307 }
5308
5309 #[cfg(feature = "test-support")]
5310 pub fn all_highlighted_ranges(
5311 &mut self,
5312 cx: &mut ViewContext<Self>,
5313 ) -> Vec<(Range<DisplayPoint>, Color)> {
5314 let snapshot = self.snapshot(cx);
5315 let buffer = &snapshot.buffer_snapshot;
5316 let start = buffer.anchor_before(0);
5317 let end = buffer.anchor_after(buffer.len());
5318 self.highlighted_ranges_in_range(start..end, &snapshot)
5319 }
5320
5321 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5322 self.highlighted_ranges
5323 .get(&TypeId::of::<T>())
5324 .map(|(color, ranges)| (*color, ranges.as_slice()))
5325 }
5326
5327 pub fn highlighted_ranges_in_range(
5328 &self,
5329 search_range: Range<Anchor>,
5330 display_snapshot: &DisplaySnapshot,
5331 ) -> Vec<(Range<DisplayPoint>, Color)> {
5332 let mut results = Vec::new();
5333 let buffer = &display_snapshot.buffer_snapshot;
5334 for (color, ranges) in self.highlighted_ranges.values() {
5335 let start_ix = match ranges.binary_search_by(|probe| {
5336 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5337 if cmp.is_gt() {
5338 Ordering::Greater
5339 } else {
5340 Ordering::Less
5341 }
5342 }) {
5343 Ok(i) | Err(i) => i,
5344 };
5345 for range in &ranges[start_ix..] {
5346 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5347 break;
5348 }
5349 let start = range
5350 .start
5351 .to_point(buffer)
5352 .to_display_point(display_snapshot);
5353 let end = range
5354 .end
5355 .to_point(buffer)
5356 .to_display_point(display_snapshot);
5357 results.push((start..end, *color))
5358 }
5359 }
5360 results
5361 }
5362
5363 fn next_blink_epoch(&mut self) -> usize {
5364 self.blink_epoch += 1;
5365 self.blink_epoch
5366 }
5367
5368 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5369 if !self.focused {
5370 return;
5371 }
5372
5373 self.show_local_cursors = true;
5374 cx.notify();
5375
5376 let epoch = self.next_blink_epoch();
5377 cx.spawn(|this, mut cx| {
5378 let this = this.downgrade();
5379 async move {
5380 Timer::after(CURSOR_BLINK_INTERVAL).await;
5381 if let Some(this) = this.upgrade(&cx) {
5382 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5383 }
5384 }
5385 })
5386 .detach();
5387 }
5388
5389 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5390 if epoch == self.blink_epoch {
5391 self.blinking_paused = false;
5392 self.blink_cursors(epoch, cx);
5393 }
5394 }
5395
5396 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5397 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5398 self.show_local_cursors = !self.show_local_cursors;
5399 cx.notify();
5400
5401 let epoch = self.next_blink_epoch();
5402 cx.spawn(|this, mut cx| {
5403 let this = this.downgrade();
5404 async move {
5405 Timer::after(CURSOR_BLINK_INTERVAL).await;
5406 if let Some(this) = this.upgrade(&cx) {
5407 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5408 }
5409 }
5410 })
5411 .detach();
5412 }
5413 }
5414
5415 pub fn show_local_cursors(&self) -> bool {
5416 self.show_local_cursors
5417 }
5418
5419 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5420 cx.notify();
5421 }
5422
5423 fn on_buffer_event(
5424 &mut self,
5425 _: ModelHandle<MultiBuffer>,
5426 event: &language::Event,
5427 cx: &mut ViewContext<Self>,
5428 ) {
5429 match event {
5430 language::Event::Edited => {
5431 self.refresh_active_diagnostics(cx);
5432 self.refresh_code_actions(cx);
5433 cx.emit(Event::Edited);
5434 }
5435 language::Event::Dirtied => cx.emit(Event::Dirtied),
5436 language::Event::Saved => cx.emit(Event::Saved),
5437 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5438 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5439 language::Event::Closed => cx.emit(Event::Closed),
5440 language::Event::DiagnosticsUpdated => {
5441 self.refresh_active_diagnostics(cx);
5442 }
5443 _ => {}
5444 }
5445 }
5446
5447 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5448 cx.notify();
5449 }
5450
5451 pub fn set_searchable(&mut self, searchable: bool) {
5452 self.searchable = searchable;
5453 }
5454
5455 pub fn searchable(&self) -> bool {
5456 self.searchable
5457 }
5458
5459 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5460 let active_item = workspace.active_item(cx);
5461 let editor_handle = if let Some(editor) = active_item
5462 .as_ref()
5463 .and_then(|item| item.act_as::<Self>(cx))
5464 {
5465 editor
5466 } else {
5467 cx.propagate_action();
5468 return;
5469 };
5470
5471 let editor = editor_handle.read(cx);
5472 let buffer = editor.buffer.read(cx);
5473 if buffer.is_singleton() {
5474 cx.propagate_action();
5475 return;
5476 }
5477
5478 let mut new_selections_by_buffer = HashMap::default();
5479 for selection in editor.local_selections::<usize>(cx) {
5480 for (buffer, mut range) in
5481 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5482 {
5483 if selection.reversed {
5484 mem::swap(&mut range.start, &mut range.end);
5485 }
5486 new_selections_by_buffer
5487 .entry(buffer)
5488 .or_insert(Vec::new())
5489 .push(range)
5490 }
5491 }
5492
5493 editor_handle.update(cx, |editor, cx| {
5494 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5495 });
5496 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5497 nav_history.borrow_mut().disable();
5498
5499 // We defer the pane interaction because we ourselves are a workspace item
5500 // and activating a new item causes the pane to call a method on us reentrantly,
5501 // which panics if we're on the stack.
5502 cx.defer(move |workspace, cx| {
5503 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5504 let buffer = BufferItemHandle(buffer);
5505 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5506 workspace.activate_next_pane(cx);
5507 }
5508
5509 let editor = workspace
5510 .open_item(buffer, cx)
5511 .downcast::<Editor>()
5512 .unwrap();
5513
5514 editor.update(cx, |editor, cx| {
5515 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5516 });
5517 }
5518
5519 nav_history.borrow_mut().enable();
5520 });
5521 }
5522}
5523
5524impl EditorSnapshot {
5525 pub fn is_focused(&self) -> bool {
5526 self.is_focused
5527 }
5528
5529 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5530 self.placeholder_text.as_ref()
5531 }
5532
5533 pub fn scroll_position(&self) -> Vector2F {
5534 compute_scroll_position(
5535 &self.display_snapshot,
5536 self.scroll_position,
5537 &self.scroll_top_anchor,
5538 )
5539 }
5540}
5541
5542impl Deref for EditorSnapshot {
5543 type Target = DisplaySnapshot;
5544
5545 fn deref(&self) -> &Self::Target {
5546 &self.display_snapshot
5547 }
5548}
5549
5550fn compute_scroll_position(
5551 snapshot: &DisplaySnapshot,
5552 mut scroll_position: Vector2F,
5553 scroll_top_anchor: &Option<Anchor>,
5554) -> Vector2F {
5555 if let Some(anchor) = scroll_top_anchor {
5556 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5557 scroll_position.set_y(scroll_top + scroll_position.y());
5558 } else {
5559 scroll_position.set_y(0.);
5560 }
5561 scroll_position
5562}
5563
5564#[derive(Copy, Clone)]
5565pub enum Event {
5566 Activate,
5567 Edited,
5568 Blurred,
5569 Dirtied,
5570 Saved,
5571 TitleChanged,
5572 SelectionsChanged,
5573 Closed,
5574}
5575
5576impl Entity for Editor {
5577 type Event = Event;
5578}
5579
5580impl View for Editor {
5581 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5582 let style = self.style(cx);
5583 self.display_map.update(cx, |map, cx| {
5584 map.set_font(style.text.font_id, style.text.font_size, cx)
5585 });
5586 EditorElement::new(self.handle.clone(), style.clone()).boxed()
5587 }
5588
5589 fn ui_name() -> &'static str {
5590 "Editor"
5591 }
5592
5593 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5594 self.focused = true;
5595 self.blink_cursors(self.blink_epoch, cx);
5596 self.buffer.update(cx, |buffer, cx| {
5597 buffer.finalize_last_transaction(cx);
5598 buffer.set_active_selections(&self.selections, cx)
5599 });
5600 }
5601
5602 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5603 self.focused = false;
5604 self.show_local_cursors = false;
5605 self.buffer
5606 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5607 self.hide_context_menu(cx);
5608 cx.emit(Event::Blurred);
5609 cx.notify();
5610 }
5611
5612 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5613 let mut cx = Self::default_keymap_context();
5614 let mode = match self.mode {
5615 EditorMode::SingleLine => "single_line",
5616 EditorMode::AutoHeight { .. } => "auto_height",
5617 EditorMode::Full => "full",
5618 };
5619 cx.map.insert("mode".into(), mode.into());
5620 if self.pending_rename.is_some() {
5621 cx.set.insert("renaming".into());
5622 }
5623 match self.context_menu.as_ref() {
5624 Some(ContextMenu::Completions(_)) => {
5625 cx.set.insert("showing_completions".into());
5626 }
5627 Some(ContextMenu::CodeActions(_)) => {
5628 cx.set.insert("showing_code_actions".into());
5629 }
5630 None => {}
5631 }
5632 cx
5633 }
5634}
5635
5636fn build_style(
5637 settings: &Settings,
5638 get_field_editor_theme: Option<GetFieldEditorTheme>,
5639 cx: &AppContext,
5640) -> EditorStyle {
5641 let mut theme = settings.theme.editor.clone();
5642 if let Some(get_field_editor_theme) = get_field_editor_theme {
5643 let field_editor_theme = get_field_editor_theme(&settings.theme);
5644 if let Some(background) = field_editor_theme.container.background_color {
5645 theme.background = background;
5646 }
5647 theme.text_color = field_editor_theme.text.color;
5648 theme.selection = field_editor_theme.selection;
5649 EditorStyle {
5650 text: field_editor_theme.text,
5651 placeholder_text: field_editor_theme.placeholder_text,
5652 theme,
5653 }
5654 } else {
5655 let font_cache = cx.font_cache();
5656 let font_family_id = settings.buffer_font_family;
5657 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5658 let font_properties = Default::default();
5659 let font_id = font_cache
5660 .select_font(font_family_id, &font_properties)
5661 .unwrap();
5662 let font_size = settings.buffer_font_size;
5663 EditorStyle {
5664 text: TextStyle {
5665 color: settings.theme.editor.text_color,
5666 font_family_name,
5667 font_family_id,
5668 font_id,
5669 font_size,
5670 font_properties,
5671 underline: None,
5672 },
5673 placeholder_text: None,
5674 theme,
5675 }
5676 }
5677}
5678
5679impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5680 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5681 let start = self.start.to_point(buffer);
5682 let end = self.end.to_point(buffer);
5683 if self.reversed {
5684 end..start
5685 } else {
5686 start..end
5687 }
5688 }
5689
5690 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5691 let start = self.start.to_offset(buffer);
5692 let end = self.end.to_offset(buffer);
5693 if self.reversed {
5694 end..start
5695 } else {
5696 start..end
5697 }
5698 }
5699
5700 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5701 let start = self
5702 .start
5703 .to_point(&map.buffer_snapshot)
5704 .to_display_point(map);
5705 let end = self
5706 .end
5707 .to_point(&map.buffer_snapshot)
5708 .to_display_point(map);
5709 if self.reversed {
5710 end..start
5711 } else {
5712 start..end
5713 }
5714 }
5715
5716 fn spanned_rows(
5717 &self,
5718 include_end_if_at_line_start: bool,
5719 map: &DisplaySnapshot,
5720 ) -> Range<u32> {
5721 let start = self.start.to_point(&map.buffer_snapshot);
5722 let mut end = self.end.to_point(&map.buffer_snapshot);
5723 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5724 end.row -= 1;
5725 }
5726
5727 let buffer_start = map.prev_line_boundary(start).0;
5728 let buffer_end = map.next_line_boundary(end).0;
5729 buffer_start.row..buffer_end.row + 1
5730 }
5731}
5732
5733impl<T: InvalidationRegion> InvalidationStack<T> {
5734 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5735 where
5736 S: Clone + ToOffset,
5737 {
5738 while let Some(region) = self.last() {
5739 let all_selections_inside_invalidation_ranges =
5740 if selections.len() == region.ranges().len() {
5741 selections
5742 .iter()
5743 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5744 .all(|(selection, invalidation_range)| {
5745 let head = selection.head().to_offset(&buffer);
5746 invalidation_range.start <= head && invalidation_range.end >= head
5747 })
5748 } else {
5749 false
5750 };
5751
5752 if all_selections_inside_invalidation_ranges {
5753 break;
5754 } else {
5755 self.pop();
5756 }
5757 }
5758 }
5759}
5760
5761impl<T> Default for InvalidationStack<T> {
5762 fn default() -> Self {
5763 Self(Default::default())
5764 }
5765}
5766
5767impl<T> Deref for InvalidationStack<T> {
5768 type Target = Vec<T>;
5769
5770 fn deref(&self) -> &Self::Target {
5771 &self.0
5772 }
5773}
5774
5775impl<T> DerefMut for InvalidationStack<T> {
5776 fn deref_mut(&mut self) -> &mut Self::Target {
5777 &mut self.0
5778 }
5779}
5780
5781impl InvalidationRegion for BracketPairState {
5782 fn ranges(&self) -> &[Range<Anchor>] {
5783 &self.ranges
5784 }
5785}
5786
5787impl InvalidationRegion for SnippetState {
5788 fn ranges(&self) -> &[Range<Anchor>] {
5789 &self.ranges[self.active_index]
5790 }
5791}
5792
5793impl Deref for EditorStyle {
5794 type Target = theme::Editor;
5795
5796 fn deref(&self) -> &Self::Target {
5797 &self.theme
5798 }
5799}
5800
5801pub fn diagnostic_block_renderer(
5802 diagnostic: Diagnostic,
5803 is_valid: bool,
5804 settings: watch::Receiver<Settings>,
5805) -> RenderBlock {
5806 let mut highlighted_lines = Vec::new();
5807 for line in diagnostic.message.lines() {
5808 highlighted_lines.push(highlight_diagnostic_message(line));
5809 }
5810
5811 Arc::new(move |cx: &BlockContext| {
5812 let settings = settings.borrow();
5813 let theme = &settings.theme.editor;
5814 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5815 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5816 Flex::column()
5817 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5818 Label::new(
5819 line.clone(),
5820 style.message.clone().with_font_size(font_size),
5821 )
5822 .with_highlights(highlights.clone())
5823 .contained()
5824 .with_margin_left(cx.anchor_x)
5825 .boxed()
5826 }))
5827 .aligned()
5828 .left()
5829 .boxed()
5830 })
5831}
5832
5833pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5834 let mut message_without_backticks = String::new();
5835 let mut prev_offset = 0;
5836 let mut inside_block = false;
5837 let mut highlights = Vec::new();
5838 for (match_ix, (offset, _)) in message
5839 .match_indices('`')
5840 .chain([(message.len(), "")])
5841 .enumerate()
5842 {
5843 message_without_backticks.push_str(&message[prev_offset..offset]);
5844 if inside_block {
5845 highlights.extend(prev_offset - match_ix..offset - match_ix);
5846 }
5847
5848 inside_block = !inside_block;
5849 prev_offset = offset + 1;
5850 }
5851
5852 (message_without_backticks, highlights)
5853}
5854
5855pub fn diagnostic_style(
5856 severity: DiagnosticSeverity,
5857 valid: bool,
5858 theme: &theme::Editor,
5859) -> DiagnosticStyle {
5860 match (severity, valid) {
5861 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5862 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5863 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5864 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5865 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5866 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5867 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5868 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5869 _ => theme.invalid_hint_diagnostic.clone(),
5870 }
5871}
5872
5873pub fn combine_syntax_and_fuzzy_match_highlights(
5874 text: &str,
5875 default_style: HighlightStyle,
5876 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5877 match_indices: &[usize],
5878) -> Vec<(Range<usize>, HighlightStyle)> {
5879 let mut result = Vec::new();
5880 let mut match_indices = match_indices.iter().copied().peekable();
5881
5882 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5883 {
5884 syntax_highlight.font_properties.weight(Default::default());
5885
5886 // Add highlights for any fuzzy match characters before the next
5887 // syntax highlight range.
5888 while let Some(&match_index) = match_indices.peek() {
5889 if match_index >= range.start {
5890 break;
5891 }
5892 match_indices.next();
5893 let end_index = char_ix_after(match_index, text);
5894 let mut match_style = default_style;
5895 match_style.font_properties.weight(fonts::Weight::BOLD);
5896 result.push((match_index..end_index, match_style));
5897 }
5898
5899 if range.start == usize::MAX {
5900 break;
5901 }
5902
5903 // Add highlights for any fuzzy match characters within the
5904 // syntax highlight range.
5905 let mut offset = range.start;
5906 while let Some(&match_index) = match_indices.peek() {
5907 if match_index >= range.end {
5908 break;
5909 }
5910
5911 match_indices.next();
5912 if match_index > offset {
5913 result.push((offset..match_index, syntax_highlight));
5914 }
5915
5916 let mut end_index = char_ix_after(match_index, text);
5917 while let Some(&next_match_index) = match_indices.peek() {
5918 if next_match_index == end_index && next_match_index < range.end {
5919 end_index = char_ix_after(next_match_index, text);
5920 match_indices.next();
5921 } else {
5922 break;
5923 }
5924 }
5925
5926 let mut match_style = syntax_highlight;
5927 match_style.font_properties.weight(fonts::Weight::BOLD);
5928 result.push((match_index..end_index, match_style));
5929 offset = end_index;
5930 }
5931
5932 if offset < range.end {
5933 result.push((offset..range.end, syntax_highlight));
5934 }
5935 }
5936
5937 fn char_ix_after(ix: usize, text: &str) -> usize {
5938 ix + text[ix..].chars().next().unwrap().len_utf8()
5939 }
5940
5941 result
5942}
5943
5944pub fn styled_runs_for_code_label<'a>(
5945 label: &'a CodeLabel,
5946 default_color: Color,
5947 syntax_theme: &'a theme::SyntaxTheme,
5948) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5949 const MUTED_OPACITY: usize = 165;
5950
5951 let mut muted_default_style = HighlightStyle {
5952 color: default_color,
5953 ..Default::default()
5954 };
5955 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5956
5957 let mut prev_end = label.filter_range.end;
5958 label
5959 .runs
5960 .iter()
5961 .enumerate()
5962 .flat_map(move |(ix, (range, highlight_id))| {
5963 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5964 style
5965 } else {
5966 return Default::default();
5967 };
5968 let mut muted_style = style.clone();
5969 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5970
5971 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5972 if range.start >= label.filter_range.end {
5973 if range.start > prev_end {
5974 runs.push((prev_end..range.start, muted_default_style));
5975 }
5976 runs.push((range.clone(), muted_style));
5977 } else if range.end <= label.filter_range.end {
5978 runs.push((range.clone(), style));
5979 } else {
5980 runs.push((range.start..label.filter_range.end, style));
5981 runs.push((label.filter_range.end..range.end, muted_style));
5982 }
5983 prev_end = cmp::max(prev_end, range.end);
5984
5985 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5986 runs.push((prev_end..label.text.len(), muted_default_style));
5987 }
5988
5989 runs
5990 })
5991}
5992
5993#[cfg(test)]
5994mod tests {
5995 use super::*;
5996 use language::{LanguageConfig, LanguageServerConfig};
5997 use lsp::FakeLanguageServer;
5998 use project::FakeFs;
5999 use smol::stream::StreamExt;
6000 use std::{cell::RefCell, rc::Rc, time::Instant};
6001 use text::Point;
6002 use unindent::Unindent;
6003 use util::test::sample_text;
6004
6005 #[gpui::test]
6006 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6007 let mut now = Instant::now();
6008 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6009 let group_interval = buffer.read(cx).transaction_group_interval();
6010 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6011 let settings = Settings::test(cx);
6012 let (_, editor) = cx.add_window(Default::default(), |cx| {
6013 build_editor(buffer.clone(), settings, cx)
6014 });
6015
6016 editor.update(cx, |editor, cx| {
6017 editor.start_transaction_at(now, cx);
6018 editor.select_ranges([2..4], None, cx);
6019 editor.insert("cd", cx);
6020 editor.end_transaction_at(now, cx);
6021 assert_eq!(editor.text(cx), "12cd56");
6022 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6023
6024 editor.start_transaction_at(now, cx);
6025 editor.select_ranges([4..5], None, cx);
6026 editor.insert("e", cx);
6027 editor.end_transaction_at(now, cx);
6028 assert_eq!(editor.text(cx), "12cde6");
6029 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6030
6031 now += group_interval + Duration::from_millis(1);
6032 editor.select_ranges([2..2], None, cx);
6033
6034 // Simulate an edit in another editor
6035 buffer.update(cx, |buffer, cx| {
6036 buffer.start_transaction_at(now, cx);
6037 buffer.edit([0..1], "a", cx);
6038 buffer.edit([1..1], "b", cx);
6039 buffer.end_transaction_at(now, cx);
6040 });
6041
6042 assert_eq!(editor.text(cx), "ab2cde6");
6043 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6044
6045 // Last transaction happened past the group interval in a different editor.
6046 // Undo it individually and don't restore selections.
6047 editor.undo(&Undo, cx);
6048 assert_eq!(editor.text(cx), "12cde6");
6049 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6050
6051 // First two transactions happened within the group interval in this editor.
6052 // Undo them together and restore selections.
6053 editor.undo(&Undo, cx);
6054 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6055 assert_eq!(editor.text(cx), "123456");
6056 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6057
6058 // Redo the first two transactions together.
6059 editor.redo(&Redo, cx);
6060 assert_eq!(editor.text(cx), "12cde6");
6061 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6062
6063 // Redo the last transaction on its own.
6064 editor.redo(&Redo, cx);
6065 assert_eq!(editor.text(cx), "ab2cde6");
6066 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6067
6068 // Test empty transactions.
6069 editor.start_transaction_at(now, cx);
6070 editor.end_transaction_at(now, cx);
6071 editor.undo(&Undo, cx);
6072 assert_eq!(editor.text(cx), "12cde6");
6073 });
6074 }
6075
6076 #[gpui::test]
6077 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6078 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6079 let settings = Settings::test(cx);
6080 let (_, editor) =
6081 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6082
6083 editor.update(cx, |view, cx| {
6084 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6085 });
6086
6087 assert_eq!(
6088 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6089 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6090 );
6091
6092 editor.update(cx, |view, cx| {
6093 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6094 });
6095
6096 assert_eq!(
6097 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6098 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6099 );
6100
6101 editor.update(cx, |view, cx| {
6102 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6103 });
6104
6105 assert_eq!(
6106 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6107 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6108 );
6109
6110 editor.update(cx, |view, cx| {
6111 view.end_selection(cx);
6112 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6113 });
6114
6115 assert_eq!(
6116 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6117 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6118 );
6119
6120 editor.update(cx, |view, cx| {
6121 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6122 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6123 });
6124
6125 assert_eq!(
6126 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6127 [
6128 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6129 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6130 ]
6131 );
6132
6133 editor.update(cx, |view, cx| {
6134 view.end_selection(cx);
6135 });
6136
6137 assert_eq!(
6138 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6139 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6140 );
6141 }
6142
6143 #[gpui::test]
6144 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6145 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6146 let settings = Settings::test(cx);
6147 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6148
6149 view.update(cx, |view, cx| {
6150 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6151 assert_eq!(
6152 view.selected_display_ranges(cx),
6153 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6154 );
6155 });
6156
6157 view.update(cx, |view, cx| {
6158 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6159 assert_eq!(
6160 view.selected_display_ranges(cx),
6161 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6162 );
6163 });
6164
6165 view.update(cx, |view, cx| {
6166 view.cancel(&Cancel, cx);
6167 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6168 assert_eq!(
6169 view.selected_display_ranges(cx),
6170 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6171 );
6172 });
6173 }
6174
6175 #[gpui::test]
6176 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6177 cx.add_window(Default::default(), |cx| {
6178 use workspace::ItemView;
6179 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6180 let settings = Settings::test(&cx);
6181 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6182 let mut editor = build_editor(buffer.clone(), settings, cx);
6183 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6184
6185 // Move the cursor a small distance.
6186 // Nothing is added to the navigation history.
6187 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6188 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6189 assert!(nav_history.borrow_mut().pop_backward().is_none());
6190
6191 // Move the cursor a large distance.
6192 // The history can jump back to the previous position.
6193 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6194 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6195 editor.navigate(nav_entry.data.unwrap(), cx);
6196 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6197 assert_eq!(
6198 editor.selected_display_ranges(cx),
6199 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6200 );
6201
6202 // Move the cursor a small distance via the mouse.
6203 // Nothing is added to the navigation history.
6204 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6205 editor.end_selection(cx);
6206 assert_eq!(
6207 editor.selected_display_ranges(cx),
6208 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6209 );
6210 assert!(nav_history.borrow_mut().pop_backward().is_none());
6211
6212 // Move the cursor a large distance via the mouse.
6213 // The history can jump back to the previous position.
6214 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6215 editor.end_selection(cx);
6216 assert_eq!(
6217 editor.selected_display_ranges(cx),
6218 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6219 );
6220 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6221 editor.navigate(nav_entry.data.unwrap(), cx);
6222 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6223 assert_eq!(
6224 editor.selected_display_ranges(cx),
6225 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6226 );
6227
6228 editor
6229 });
6230 }
6231
6232 #[gpui::test]
6233 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6234 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6235 let settings = Settings::test(cx);
6236 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6237
6238 view.update(cx, |view, cx| {
6239 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6240 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6241 view.end_selection(cx);
6242
6243 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6244 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6245 view.end_selection(cx);
6246 assert_eq!(
6247 view.selected_display_ranges(cx),
6248 [
6249 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6250 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6251 ]
6252 );
6253 });
6254
6255 view.update(cx, |view, cx| {
6256 view.cancel(&Cancel, cx);
6257 assert_eq!(
6258 view.selected_display_ranges(cx),
6259 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6260 );
6261 });
6262
6263 view.update(cx, |view, cx| {
6264 view.cancel(&Cancel, cx);
6265 assert_eq!(
6266 view.selected_display_ranges(cx),
6267 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6268 );
6269 });
6270 }
6271
6272 #[gpui::test]
6273 fn test_fold(cx: &mut gpui::MutableAppContext) {
6274 let buffer = MultiBuffer::build_simple(
6275 &"
6276 impl Foo {
6277 // Hello!
6278
6279 fn a() {
6280 1
6281 }
6282
6283 fn b() {
6284 2
6285 }
6286
6287 fn c() {
6288 3
6289 }
6290 }
6291 "
6292 .unindent(),
6293 cx,
6294 );
6295 let settings = Settings::test(&cx);
6296 let (_, view) = cx.add_window(Default::default(), |cx| {
6297 build_editor(buffer.clone(), settings, cx)
6298 });
6299
6300 view.update(cx, |view, cx| {
6301 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6302 view.fold(&Fold, cx);
6303 assert_eq!(
6304 view.display_text(cx),
6305 "
6306 impl Foo {
6307 // Hello!
6308
6309 fn a() {
6310 1
6311 }
6312
6313 fn b() {…
6314 }
6315
6316 fn c() {…
6317 }
6318 }
6319 "
6320 .unindent(),
6321 );
6322
6323 view.fold(&Fold, cx);
6324 assert_eq!(
6325 view.display_text(cx),
6326 "
6327 impl Foo {…
6328 }
6329 "
6330 .unindent(),
6331 );
6332
6333 view.unfold(&Unfold, cx);
6334 assert_eq!(
6335 view.display_text(cx),
6336 "
6337 impl Foo {
6338 // Hello!
6339
6340 fn a() {
6341 1
6342 }
6343
6344 fn b() {…
6345 }
6346
6347 fn c() {…
6348 }
6349 }
6350 "
6351 .unindent(),
6352 );
6353
6354 view.unfold(&Unfold, cx);
6355 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6356 });
6357 }
6358
6359 #[gpui::test]
6360 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6361 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6362 let settings = Settings::test(&cx);
6363 let (_, view) = cx.add_window(Default::default(), |cx| {
6364 build_editor(buffer.clone(), settings, cx)
6365 });
6366
6367 buffer.update(cx, |buffer, cx| {
6368 buffer.edit(
6369 vec![
6370 Point::new(1, 0)..Point::new(1, 0),
6371 Point::new(1, 1)..Point::new(1, 1),
6372 ],
6373 "\t",
6374 cx,
6375 );
6376 });
6377
6378 view.update(cx, |view, cx| {
6379 assert_eq!(
6380 view.selected_display_ranges(cx),
6381 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6382 );
6383
6384 view.move_down(&MoveDown, cx);
6385 assert_eq!(
6386 view.selected_display_ranges(cx),
6387 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6388 );
6389
6390 view.move_right(&MoveRight, cx);
6391 assert_eq!(
6392 view.selected_display_ranges(cx),
6393 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6394 );
6395
6396 view.move_left(&MoveLeft, cx);
6397 assert_eq!(
6398 view.selected_display_ranges(cx),
6399 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6400 );
6401
6402 view.move_up(&MoveUp, cx);
6403 assert_eq!(
6404 view.selected_display_ranges(cx),
6405 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6406 );
6407
6408 view.move_to_end(&MoveToEnd, cx);
6409 assert_eq!(
6410 view.selected_display_ranges(cx),
6411 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6412 );
6413
6414 view.move_to_beginning(&MoveToBeginning, cx);
6415 assert_eq!(
6416 view.selected_display_ranges(cx),
6417 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6418 );
6419
6420 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6421 view.select_to_beginning(&SelectToBeginning, cx);
6422 assert_eq!(
6423 view.selected_display_ranges(cx),
6424 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6425 );
6426
6427 view.select_to_end(&SelectToEnd, cx);
6428 assert_eq!(
6429 view.selected_display_ranges(cx),
6430 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6431 );
6432 });
6433 }
6434
6435 #[gpui::test]
6436 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6437 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6438 let settings = Settings::test(&cx);
6439 let (_, view) = cx.add_window(Default::default(), |cx| {
6440 build_editor(buffer.clone(), settings, cx)
6441 });
6442
6443 assert_eq!('ⓐ'.len_utf8(), 3);
6444 assert_eq!('α'.len_utf8(), 2);
6445
6446 view.update(cx, |view, cx| {
6447 view.fold_ranges(
6448 vec![
6449 Point::new(0, 6)..Point::new(0, 12),
6450 Point::new(1, 2)..Point::new(1, 4),
6451 Point::new(2, 4)..Point::new(2, 8),
6452 ],
6453 cx,
6454 );
6455 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6456
6457 view.move_right(&MoveRight, cx);
6458 assert_eq!(
6459 view.selected_display_ranges(cx),
6460 &[empty_range(0, "ⓐ".len())]
6461 );
6462 view.move_right(&MoveRight, cx);
6463 assert_eq!(
6464 view.selected_display_ranges(cx),
6465 &[empty_range(0, "ⓐⓑ".len())]
6466 );
6467 view.move_right(&MoveRight, cx);
6468 assert_eq!(
6469 view.selected_display_ranges(cx),
6470 &[empty_range(0, "ⓐⓑ…".len())]
6471 );
6472
6473 view.move_down(&MoveDown, cx);
6474 assert_eq!(
6475 view.selected_display_ranges(cx),
6476 &[empty_range(1, "ab…".len())]
6477 );
6478 view.move_left(&MoveLeft, cx);
6479 assert_eq!(
6480 view.selected_display_ranges(cx),
6481 &[empty_range(1, "ab".len())]
6482 );
6483 view.move_left(&MoveLeft, cx);
6484 assert_eq!(
6485 view.selected_display_ranges(cx),
6486 &[empty_range(1, "a".len())]
6487 );
6488
6489 view.move_down(&MoveDown, cx);
6490 assert_eq!(
6491 view.selected_display_ranges(cx),
6492 &[empty_range(2, "α".len())]
6493 );
6494 view.move_right(&MoveRight, cx);
6495 assert_eq!(
6496 view.selected_display_ranges(cx),
6497 &[empty_range(2, "αβ".len())]
6498 );
6499 view.move_right(&MoveRight, cx);
6500 assert_eq!(
6501 view.selected_display_ranges(cx),
6502 &[empty_range(2, "αβ…".len())]
6503 );
6504 view.move_right(&MoveRight, cx);
6505 assert_eq!(
6506 view.selected_display_ranges(cx),
6507 &[empty_range(2, "αβ…ε".len())]
6508 );
6509
6510 view.move_up(&MoveUp, cx);
6511 assert_eq!(
6512 view.selected_display_ranges(cx),
6513 &[empty_range(1, "ab…e".len())]
6514 );
6515 view.move_up(&MoveUp, cx);
6516 assert_eq!(
6517 view.selected_display_ranges(cx),
6518 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6519 );
6520 view.move_left(&MoveLeft, cx);
6521 assert_eq!(
6522 view.selected_display_ranges(cx),
6523 &[empty_range(0, "ⓐⓑ…".len())]
6524 );
6525 view.move_left(&MoveLeft, cx);
6526 assert_eq!(
6527 view.selected_display_ranges(cx),
6528 &[empty_range(0, "ⓐⓑ".len())]
6529 );
6530 view.move_left(&MoveLeft, cx);
6531 assert_eq!(
6532 view.selected_display_ranges(cx),
6533 &[empty_range(0, "ⓐ".len())]
6534 );
6535 });
6536 }
6537
6538 #[gpui::test]
6539 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6540 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6541 let settings = Settings::test(&cx);
6542 let (_, view) = cx.add_window(Default::default(), |cx| {
6543 build_editor(buffer.clone(), settings, cx)
6544 });
6545 view.update(cx, |view, cx| {
6546 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6547 view.move_down(&MoveDown, cx);
6548 assert_eq!(
6549 view.selected_display_ranges(cx),
6550 &[empty_range(1, "abcd".len())]
6551 );
6552
6553 view.move_down(&MoveDown, cx);
6554 assert_eq!(
6555 view.selected_display_ranges(cx),
6556 &[empty_range(2, "αβγ".len())]
6557 );
6558
6559 view.move_down(&MoveDown, cx);
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 &[empty_range(3, "abcd".len())]
6563 );
6564
6565 view.move_down(&MoveDown, cx);
6566 assert_eq!(
6567 view.selected_display_ranges(cx),
6568 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6569 );
6570
6571 view.move_up(&MoveUp, cx);
6572 assert_eq!(
6573 view.selected_display_ranges(cx),
6574 &[empty_range(3, "abcd".len())]
6575 );
6576
6577 view.move_up(&MoveUp, cx);
6578 assert_eq!(
6579 view.selected_display_ranges(cx),
6580 &[empty_range(2, "αβγ".len())]
6581 );
6582 });
6583 }
6584
6585 #[gpui::test]
6586 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6587 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6588 let settings = Settings::test(&cx);
6589 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6590 view.update(cx, |view, cx| {
6591 view.select_display_ranges(
6592 &[
6593 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6594 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6595 ],
6596 cx,
6597 );
6598 });
6599
6600 view.update(cx, |view, cx| {
6601 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6602 assert_eq!(
6603 view.selected_display_ranges(cx),
6604 &[
6605 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6606 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6607 ]
6608 );
6609 });
6610
6611 view.update(cx, |view, cx| {
6612 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6613 assert_eq!(
6614 view.selected_display_ranges(cx),
6615 &[
6616 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6617 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6618 ]
6619 );
6620 });
6621
6622 view.update(cx, |view, cx| {
6623 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6624 assert_eq!(
6625 view.selected_display_ranges(cx),
6626 &[
6627 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6628 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6629 ]
6630 );
6631 });
6632
6633 view.update(cx, |view, cx| {
6634 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6635 assert_eq!(
6636 view.selected_display_ranges(cx),
6637 &[
6638 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6639 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6640 ]
6641 );
6642 });
6643
6644 // Moving to the end of line again is a no-op.
6645 view.update(cx, |view, cx| {
6646 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6647 assert_eq!(
6648 view.selected_display_ranges(cx),
6649 &[
6650 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6651 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6652 ]
6653 );
6654 });
6655
6656 view.update(cx, |view, cx| {
6657 view.move_left(&MoveLeft, cx);
6658 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6659 assert_eq!(
6660 view.selected_display_ranges(cx),
6661 &[
6662 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6663 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6664 ]
6665 );
6666 });
6667
6668 view.update(cx, |view, cx| {
6669 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6670 assert_eq!(
6671 view.selected_display_ranges(cx),
6672 &[
6673 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6674 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6675 ]
6676 );
6677 });
6678
6679 view.update(cx, |view, cx| {
6680 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6681 assert_eq!(
6682 view.selected_display_ranges(cx),
6683 &[
6684 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6685 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6686 ]
6687 );
6688 });
6689
6690 view.update(cx, |view, cx| {
6691 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6692 assert_eq!(
6693 view.selected_display_ranges(cx),
6694 &[
6695 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6696 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6697 ]
6698 );
6699 });
6700
6701 view.update(cx, |view, cx| {
6702 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6703 assert_eq!(view.display_text(cx), "ab\n de");
6704 assert_eq!(
6705 view.selected_display_ranges(cx),
6706 &[
6707 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6708 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6709 ]
6710 );
6711 });
6712
6713 view.update(cx, |view, cx| {
6714 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6715 assert_eq!(view.display_text(cx), "\n");
6716 assert_eq!(
6717 view.selected_display_ranges(cx),
6718 &[
6719 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6720 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6721 ]
6722 );
6723 });
6724 }
6725
6726 #[gpui::test]
6727 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6728 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6729 let settings = Settings::test(&cx);
6730 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6731 view.update(cx, |view, cx| {
6732 view.select_display_ranges(
6733 &[
6734 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6735 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6736 ],
6737 cx,
6738 );
6739 });
6740
6741 view.update(cx, |view, cx| {
6742 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6743 assert_eq!(
6744 view.selected_display_ranges(cx),
6745 &[
6746 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6747 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6748 ]
6749 );
6750 });
6751
6752 view.update(cx, |view, cx| {
6753 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6754 assert_eq!(
6755 view.selected_display_ranges(cx),
6756 &[
6757 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6758 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6759 ]
6760 );
6761 });
6762
6763 view.update(cx, |view, cx| {
6764 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6765 assert_eq!(
6766 view.selected_display_ranges(cx),
6767 &[
6768 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6769 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6770 ]
6771 );
6772 });
6773
6774 view.update(cx, |view, cx| {
6775 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6776 assert_eq!(
6777 view.selected_display_ranges(cx),
6778 &[
6779 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6780 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6781 ]
6782 );
6783 });
6784
6785 view.update(cx, |view, cx| {
6786 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6787 assert_eq!(
6788 view.selected_display_ranges(cx),
6789 &[
6790 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6791 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6792 ]
6793 );
6794 });
6795
6796 view.update(cx, |view, cx| {
6797 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6798 assert_eq!(
6799 view.selected_display_ranges(cx),
6800 &[
6801 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6802 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6803 ]
6804 );
6805 });
6806
6807 view.update(cx, |view, cx| {
6808 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6809 assert_eq!(
6810 view.selected_display_ranges(cx),
6811 &[
6812 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6813 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6814 ]
6815 );
6816 });
6817
6818 view.update(cx, |view, cx| {
6819 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6820 assert_eq!(
6821 view.selected_display_ranges(cx),
6822 &[
6823 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6824 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6825 ]
6826 );
6827 });
6828
6829 view.update(cx, |view, cx| {
6830 view.move_right(&MoveRight, cx);
6831 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6832 assert_eq!(
6833 view.selected_display_ranges(cx),
6834 &[
6835 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6836 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6837 ]
6838 );
6839 });
6840
6841 view.update(cx, |view, cx| {
6842 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6843 assert_eq!(
6844 view.selected_display_ranges(cx),
6845 &[
6846 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6847 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6848 ]
6849 );
6850 });
6851
6852 view.update(cx, |view, cx| {
6853 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6854 assert_eq!(
6855 view.selected_display_ranges(cx),
6856 &[
6857 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6858 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6859 ]
6860 );
6861 });
6862 }
6863
6864 #[gpui::test]
6865 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6866 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6867 let settings = Settings::test(&cx);
6868 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6869
6870 view.update(cx, |view, cx| {
6871 view.set_wrap_width(Some(140.), cx);
6872 assert_eq!(
6873 view.display_text(cx),
6874 "use one::{\n two::three::\n four::five\n};"
6875 );
6876
6877 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6878
6879 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6880 assert_eq!(
6881 view.selected_display_ranges(cx),
6882 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6883 );
6884
6885 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6886 assert_eq!(
6887 view.selected_display_ranges(cx),
6888 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6889 );
6890
6891 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6892 assert_eq!(
6893 view.selected_display_ranges(cx),
6894 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6895 );
6896
6897 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6898 assert_eq!(
6899 view.selected_display_ranges(cx),
6900 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6901 );
6902
6903 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6904 assert_eq!(
6905 view.selected_display_ranges(cx),
6906 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6907 );
6908
6909 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6910 assert_eq!(
6911 view.selected_display_ranges(cx),
6912 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6913 );
6914 });
6915 }
6916
6917 #[gpui::test]
6918 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6919 let buffer = MultiBuffer::build_simple("one two three four", cx);
6920 let settings = Settings::test(&cx);
6921 let (_, view) = cx.add_window(Default::default(), |cx| {
6922 build_editor(buffer.clone(), settings, cx)
6923 });
6924
6925 view.update(cx, |view, cx| {
6926 view.select_display_ranges(
6927 &[
6928 // an empty selection - the preceding word fragment is deleted
6929 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6930 // characters selected - they are deleted
6931 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6932 ],
6933 cx,
6934 );
6935 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6936 });
6937
6938 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6939
6940 view.update(cx, |view, cx| {
6941 view.select_display_ranges(
6942 &[
6943 // an empty selection - the following word fragment is deleted
6944 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6945 // characters selected - they are deleted
6946 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6947 ],
6948 cx,
6949 );
6950 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6951 });
6952
6953 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6954 }
6955
6956 #[gpui::test]
6957 fn test_newline(cx: &mut gpui::MutableAppContext) {
6958 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6959 let settings = Settings::test(&cx);
6960 let (_, view) = cx.add_window(Default::default(), |cx| {
6961 build_editor(buffer.clone(), settings, cx)
6962 });
6963
6964 view.update(cx, |view, cx| {
6965 view.select_display_ranges(
6966 &[
6967 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6968 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6969 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6970 ],
6971 cx,
6972 );
6973
6974 view.newline(&Newline, cx);
6975 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6976 });
6977 }
6978
6979 #[gpui::test]
6980 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6981 let buffer = MultiBuffer::build_simple(
6982 "
6983 a
6984 b(
6985 X
6986 )
6987 c(
6988 X
6989 )
6990 "
6991 .unindent()
6992 .as_str(),
6993 cx,
6994 );
6995
6996 let settings = Settings::test(&cx);
6997 let (_, editor) = cx.add_window(Default::default(), |cx| {
6998 let mut editor = build_editor(buffer.clone(), settings, cx);
6999 editor.select_ranges(
7000 [
7001 Point::new(2, 4)..Point::new(2, 5),
7002 Point::new(5, 4)..Point::new(5, 5),
7003 ],
7004 None,
7005 cx,
7006 );
7007 editor
7008 });
7009
7010 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7011 buffer.update(cx, |buffer, cx| {
7012 buffer.edit(
7013 [
7014 Point::new(1, 2)..Point::new(3, 0),
7015 Point::new(4, 2)..Point::new(6, 0),
7016 ],
7017 "",
7018 cx,
7019 );
7020 assert_eq!(
7021 buffer.read(cx).text(),
7022 "
7023 a
7024 b()
7025 c()
7026 "
7027 .unindent()
7028 );
7029 });
7030
7031 editor.update(cx, |editor, cx| {
7032 assert_eq!(
7033 editor.selected_ranges(cx),
7034 &[
7035 Point::new(1, 2)..Point::new(1, 2),
7036 Point::new(2, 2)..Point::new(2, 2),
7037 ],
7038 );
7039
7040 editor.newline(&Newline, cx);
7041 assert_eq!(
7042 editor.text(cx),
7043 "
7044 a
7045 b(
7046 )
7047 c(
7048 )
7049 "
7050 .unindent()
7051 );
7052
7053 // The selections are moved after the inserted newlines
7054 assert_eq!(
7055 editor.selected_ranges(cx),
7056 &[
7057 Point::new(2, 0)..Point::new(2, 0),
7058 Point::new(4, 0)..Point::new(4, 0),
7059 ],
7060 );
7061 });
7062 }
7063
7064 #[gpui::test]
7065 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7066 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7067
7068 let settings = Settings::test(&cx);
7069 let (_, editor) = cx.add_window(Default::default(), |cx| {
7070 let mut editor = build_editor(buffer.clone(), settings, cx);
7071 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7072 editor
7073 });
7074
7075 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7076 buffer.update(cx, |buffer, cx| {
7077 buffer.edit([2..5, 10..13, 18..21], "", cx);
7078 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7079 });
7080
7081 editor.update(cx, |editor, cx| {
7082 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7083
7084 editor.insert("Z", cx);
7085 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7086
7087 // The selections are moved after the inserted characters
7088 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7089 });
7090 }
7091
7092 #[gpui::test]
7093 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7094 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7095 let settings = Settings::test(&cx);
7096 let (_, view) = cx.add_window(Default::default(), |cx| {
7097 build_editor(buffer.clone(), settings, cx)
7098 });
7099
7100 view.update(cx, |view, cx| {
7101 // two selections on the same line
7102 view.select_display_ranges(
7103 &[
7104 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7105 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7106 ],
7107 cx,
7108 );
7109
7110 // indent from mid-tabstop to full tabstop
7111 view.tab(&Tab, cx);
7112 assert_eq!(view.text(cx), " one two\nthree\n four");
7113 assert_eq!(
7114 view.selected_display_ranges(cx),
7115 &[
7116 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7117 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7118 ]
7119 );
7120
7121 // outdent from 1 tabstop to 0 tabstops
7122 view.outdent(&Outdent, cx);
7123 assert_eq!(view.text(cx), "one two\nthree\n four");
7124 assert_eq!(
7125 view.selected_display_ranges(cx),
7126 &[
7127 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7128 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7129 ]
7130 );
7131
7132 // select across line ending
7133 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7134
7135 // indent and outdent affect only the preceding line
7136 view.tab(&Tab, cx);
7137 assert_eq!(view.text(cx), "one two\n three\n four");
7138 assert_eq!(
7139 view.selected_display_ranges(cx),
7140 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7141 );
7142 view.outdent(&Outdent, cx);
7143 assert_eq!(view.text(cx), "one two\nthree\n four");
7144 assert_eq!(
7145 view.selected_display_ranges(cx),
7146 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7147 );
7148
7149 // Ensure that indenting/outdenting works when the cursor is at column 0.
7150 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7151 view.tab(&Tab, cx);
7152 assert_eq!(view.text(cx), "one two\n three\n four");
7153 assert_eq!(
7154 view.selected_display_ranges(cx),
7155 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7156 );
7157
7158 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7159 view.outdent(&Outdent, cx);
7160 assert_eq!(view.text(cx), "one two\nthree\n four");
7161 assert_eq!(
7162 view.selected_display_ranges(cx),
7163 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7164 );
7165 });
7166 }
7167
7168 #[gpui::test]
7169 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7170 let settings = Settings::test(&cx);
7171 let (_, view) = cx.add_window(Default::default(), |cx| {
7172 build_editor(MultiBuffer::build_simple("", cx), settings, cx)
7173 });
7174
7175 view.update(cx, |view, cx| {
7176 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7177 view.select_display_ranges(
7178 &[
7179 // an empty selection - the preceding character is deleted
7180 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7181 // one character selected - it is deleted
7182 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7183 // a line suffix selected - it is deleted
7184 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7185 ],
7186 cx,
7187 );
7188 view.backspace(&Backspace, cx);
7189 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7190
7191 view.set_text(" one\n two\n three\n four", cx);
7192 view.select_display_ranges(
7193 &[
7194 // cursors at the the end of leading indent - last indent is deleted
7195 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7196 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7197 // cursors inside leading indent - overlapping indent deletions are coalesced
7198 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7199 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7200 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7201 // cursor at the beginning of a line - preceding newline is deleted
7202 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7203 // selection inside leading indent - only the selected character is deleted
7204 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7205 ],
7206 cx,
7207 );
7208 view.backspace(&Backspace, cx);
7209 assert_eq!(view.text(cx), "one\n two\n three four");
7210 });
7211 }
7212
7213 #[gpui::test]
7214 fn test_delete(cx: &mut gpui::MutableAppContext) {
7215 let buffer =
7216 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7217 let settings = Settings::test(&cx);
7218 let (_, view) = cx.add_window(Default::default(), |cx| {
7219 build_editor(buffer.clone(), settings, cx)
7220 });
7221
7222 view.update(cx, |view, cx| {
7223 view.select_display_ranges(
7224 &[
7225 // an empty selection - the following character is deleted
7226 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7227 // one character selected - it is deleted
7228 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7229 // a line suffix selected - it is deleted
7230 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7231 ],
7232 cx,
7233 );
7234 view.delete(&Delete, cx);
7235 });
7236
7237 assert_eq!(
7238 buffer.read(cx).read(cx).text(),
7239 "on two three\nfou five six\nseven ten\n"
7240 );
7241 }
7242
7243 #[gpui::test]
7244 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7245 let settings = Settings::test(&cx);
7246 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7247 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7248 view.update(cx, |view, cx| {
7249 view.select_display_ranges(
7250 &[
7251 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7252 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7253 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7254 ],
7255 cx,
7256 );
7257 view.delete_line(&DeleteLine, cx);
7258 assert_eq!(view.display_text(cx), "ghi");
7259 assert_eq!(
7260 view.selected_display_ranges(cx),
7261 vec![
7262 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7263 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7264 ]
7265 );
7266 });
7267
7268 let settings = Settings::test(&cx);
7269 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7270 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7271 view.update(cx, |view, cx| {
7272 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7273 view.delete_line(&DeleteLine, cx);
7274 assert_eq!(view.display_text(cx), "ghi\n");
7275 assert_eq!(
7276 view.selected_display_ranges(cx),
7277 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7278 );
7279 });
7280 }
7281
7282 #[gpui::test]
7283 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7284 let settings = Settings::test(&cx);
7285 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7286 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7287 view.update(cx, |view, cx| {
7288 view.select_display_ranges(
7289 &[
7290 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7291 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7292 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7293 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7294 ],
7295 cx,
7296 );
7297 view.duplicate_line(&DuplicateLine, cx);
7298 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7299 assert_eq!(
7300 view.selected_display_ranges(cx),
7301 vec![
7302 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7303 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7304 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7305 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7306 ]
7307 );
7308 });
7309
7310 let settings = Settings::test(&cx);
7311 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7312 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7313 view.update(cx, |view, cx| {
7314 view.select_display_ranges(
7315 &[
7316 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7317 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7318 ],
7319 cx,
7320 );
7321 view.duplicate_line(&DuplicateLine, cx);
7322 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7323 assert_eq!(
7324 view.selected_display_ranges(cx),
7325 vec![
7326 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7327 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7328 ]
7329 );
7330 });
7331 }
7332
7333 #[gpui::test]
7334 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7335 let settings = Settings::test(&cx);
7336 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7337 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7338 view.update(cx, |view, cx| {
7339 view.fold_ranges(
7340 vec![
7341 Point::new(0, 2)..Point::new(1, 2),
7342 Point::new(2, 3)..Point::new(4, 1),
7343 Point::new(7, 0)..Point::new(8, 4),
7344 ],
7345 cx,
7346 );
7347 view.select_display_ranges(
7348 &[
7349 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7350 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7351 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7352 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7353 ],
7354 cx,
7355 );
7356 assert_eq!(
7357 view.display_text(cx),
7358 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7359 );
7360
7361 view.move_line_up(&MoveLineUp, cx);
7362 assert_eq!(
7363 view.display_text(cx),
7364 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7365 );
7366 assert_eq!(
7367 view.selected_display_ranges(cx),
7368 vec![
7369 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7370 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7371 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7372 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7373 ]
7374 );
7375 });
7376
7377 view.update(cx, |view, cx| {
7378 view.move_line_down(&MoveLineDown, cx);
7379 assert_eq!(
7380 view.display_text(cx),
7381 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7382 );
7383 assert_eq!(
7384 view.selected_display_ranges(cx),
7385 vec![
7386 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7387 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7388 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7389 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7390 ]
7391 );
7392 });
7393
7394 view.update(cx, |view, cx| {
7395 view.move_line_down(&MoveLineDown, cx);
7396 assert_eq!(
7397 view.display_text(cx),
7398 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7399 );
7400 assert_eq!(
7401 view.selected_display_ranges(cx),
7402 vec![
7403 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7404 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7405 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7406 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7407 ]
7408 );
7409 });
7410
7411 view.update(cx, |view, cx| {
7412 view.move_line_up(&MoveLineUp, cx);
7413 assert_eq!(
7414 view.display_text(cx),
7415 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7416 );
7417 assert_eq!(
7418 view.selected_display_ranges(cx),
7419 vec![
7420 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7421 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7422 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7423 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7424 ]
7425 );
7426 });
7427 }
7428
7429 #[gpui::test]
7430 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7431 let settings = Settings::test(&cx);
7432 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7433 let snapshot = buffer.read(cx).snapshot(cx);
7434 let (_, editor) =
7435 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7436 editor.update(cx, |editor, cx| {
7437 editor.insert_blocks(
7438 [BlockProperties {
7439 position: snapshot.anchor_after(Point::new(2, 0)),
7440 disposition: BlockDisposition::Below,
7441 height: 1,
7442 render: Arc::new(|_| Empty::new().boxed()),
7443 }],
7444 cx,
7445 );
7446 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7447 editor.move_line_down(&MoveLineDown, cx);
7448 });
7449 }
7450
7451 #[gpui::test]
7452 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7453 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7454 let settings = Settings::test(&cx);
7455 let view = cx
7456 .add_window(Default::default(), |cx| {
7457 build_editor(buffer.clone(), settings, cx)
7458 })
7459 .1;
7460
7461 // Cut with three selections. Clipboard text is divided into three slices.
7462 view.update(cx, |view, cx| {
7463 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7464 view.cut(&Cut, cx);
7465 assert_eq!(view.display_text(cx), "two four six ");
7466 });
7467
7468 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7469 view.update(cx, |view, cx| {
7470 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7471 view.paste(&Paste, cx);
7472 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7473 assert_eq!(
7474 view.selected_display_ranges(cx),
7475 &[
7476 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7477 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7478 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7479 ]
7480 );
7481 });
7482
7483 // Paste again but with only two cursors. Since the number of cursors doesn't
7484 // match the number of slices in the clipboard, the entire clipboard text
7485 // is pasted at each cursor.
7486 view.update(cx, |view, cx| {
7487 view.select_ranges(vec![0..0, 31..31], None, cx);
7488 view.handle_input(&Input("( ".into()), cx);
7489 view.paste(&Paste, cx);
7490 view.handle_input(&Input(") ".into()), cx);
7491 assert_eq!(
7492 view.display_text(cx),
7493 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7494 );
7495 });
7496
7497 view.update(cx, |view, cx| {
7498 view.select_ranges(vec![0..0], None, cx);
7499 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7500 assert_eq!(
7501 view.display_text(cx),
7502 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7503 );
7504 });
7505
7506 // Cut with three selections, one of which is full-line.
7507 view.update(cx, |view, cx| {
7508 view.select_display_ranges(
7509 &[
7510 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7511 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7512 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7513 ],
7514 cx,
7515 );
7516 view.cut(&Cut, cx);
7517 assert_eq!(
7518 view.display_text(cx),
7519 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7520 );
7521 });
7522
7523 // Paste with three selections, noticing how the copied selection that was full-line
7524 // gets inserted before the second cursor.
7525 view.update(cx, |view, cx| {
7526 view.select_display_ranges(
7527 &[
7528 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7529 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7530 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7531 ],
7532 cx,
7533 );
7534 view.paste(&Paste, cx);
7535 assert_eq!(
7536 view.display_text(cx),
7537 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7538 );
7539 assert_eq!(
7540 view.selected_display_ranges(cx),
7541 &[
7542 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7543 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7544 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7545 ]
7546 );
7547 });
7548
7549 // Copy with a single cursor only, which writes the whole line into the clipboard.
7550 view.update(cx, |view, cx| {
7551 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7552 view.copy(&Copy, cx);
7553 });
7554
7555 // Paste with three selections, noticing how the copied full-line selection is inserted
7556 // before the empty selections but replaces the selection that is non-empty.
7557 view.update(cx, |view, cx| {
7558 view.select_display_ranges(
7559 &[
7560 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7561 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7562 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7563 ],
7564 cx,
7565 );
7566 view.paste(&Paste, cx);
7567 assert_eq!(
7568 view.display_text(cx),
7569 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7570 );
7571 assert_eq!(
7572 view.selected_display_ranges(cx),
7573 &[
7574 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7575 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7576 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7577 ]
7578 );
7579 });
7580 }
7581
7582 #[gpui::test]
7583 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7584 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7585 let settings = Settings::test(&cx);
7586 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7587 view.update(cx, |view, cx| {
7588 view.select_all(&SelectAll, cx);
7589 assert_eq!(
7590 view.selected_display_ranges(cx),
7591 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7592 );
7593 });
7594 }
7595
7596 #[gpui::test]
7597 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7598 let settings = Settings::test(&cx);
7599 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7600 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7601 view.update(cx, |view, cx| {
7602 view.select_display_ranges(
7603 &[
7604 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7605 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7606 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7607 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7608 ],
7609 cx,
7610 );
7611 view.select_line(&SelectLine, cx);
7612 assert_eq!(
7613 view.selected_display_ranges(cx),
7614 vec![
7615 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7616 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7617 ]
7618 );
7619 });
7620
7621 view.update(cx, |view, cx| {
7622 view.select_line(&SelectLine, cx);
7623 assert_eq!(
7624 view.selected_display_ranges(cx),
7625 vec![
7626 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7627 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7628 ]
7629 );
7630 });
7631
7632 view.update(cx, |view, cx| {
7633 view.select_line(&SelectLine, cx);
7634 assert_eq!(
7635 view.selected_display_ranges(cx),
7636 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7637 );
7638 });
7639 }
7640
7641 #[gpui::test]
7642 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7643 let settings = Settings::test(&cx);
7644 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7645 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7646 view.update(cx, |view, cx| {
7647 view.fold_ranges(
7648 vec![
7649 Point::new(0, 2)..Point::new(1, 2),
7650 Point::new(2, 3)..Point::new(4, 1),
7651 Point::new(7, 0)..Point::new(8, 4),
7652 ],
7653 cx,
7654 );
7655 view.select_display_ranges(
7656 &[
7657 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7658 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7659 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7660 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7661 ],
7662 cx,
7663 );
7664 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7665 });
7666
7667 view.update(cx, |view, cx| {
7668 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7669 assert_eq!(
7670 view.display_text(cx),
7671 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7672 );
7673 assert_eq!(
7674 view.selected_display_ranges(cx),
7675 [
7676 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7677 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7678 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7679 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7680 ]
7681 );
7682 });
7683
7684 view.update(cx, |view, cx| {
7685 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7686 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7687 assert_eq!(
7688 view.display_text(cx),
7689 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7690 );
7691 assert_eq!(
7692 view.selected_display_ranges(cx),
7693 [
7694 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7695 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7696 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7697 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7698 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7699 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7700 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7701 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7702 ]
7703 );
7704 });
7705 }
7706
7707 #[gpui::test]
7708 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7709 let settings = Settings::test(&cx);
7710 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7711 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7712
7713 view.update(cx, |view, cx| {
7714 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7715 });
7716 view.update(cx, |view, cx| {
7717 view.add_selection_above(&AddSelectionAbove, cx);
7718 assert_eq!(
7719 view.selected_display_ranges(cx),
7720 vec![
7721 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7722 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7723 ]
7724 );
7725 });
7726
7727 view.update(cx, |view, cx| {
7728 view.add_selection_above(&AddSelectionAbove, cx);
7729 assert_eq!(
7730 view.selected_display_ranges(cx),
7731 vec![
7732 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7733 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7734 ]
7735 );
7736 });
7737
7738 view.update(cx, |view, cx| {
7739 view.add_selection_below(&AddSelectionBelow, cx);
7740 assert_eq!(
7741 view.selected_display_ranges(cx),
7742 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7743 );
7744 });
7745
7746 view.update(cx, |view, cx| {
7747 view.add_selection_below(&AddSelectionBelow, cx);
7748 assert_eq!(
7749 view.selected_display_ranges(cx),
7750 vec![
7751 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7752 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7753 ]
7754 );
7755 });
7756
7757 view.update(cx, |view, cx| {
7758 view.add_selection_below(&AddSelectionBelow, cx);
7759 assert_eq!(
7760 view.selected_display_ranges(cx),
7761 vec![
7762 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7763 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7764 ]
7765 );
7766 });
7767
7768 view.update(cx, |view, cx| {
7769 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7770 });
7771 view.update(cx, |view, cx| {
7772 view.add_selection_below(&AddSelectionBelow, cx);
7773 assert_eq!(
7774 view.selected_display_ranges(cx),
7775 vec![
7776 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7777 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7778 ]
7779 );
7780 });
7781
7782 view.update(cx, |view, cx| {
7783 view.add_selection_below(&AddSelectionBelow, cx);
7784 assert_eq!(
7785 view.selected_display_ranges(cx),
7786 vec![
7787 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7788 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7789 ]
7790 );
7791 });
7792
7793 view.update(cx, |view, cx| {
7794 view.add_selection_above(&AddSelectionAbove, cx);
7795 assert_eq!(
7796 view.selected_display_ranges(cx),
7797 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7798 );
7799 });
7800
7801 view.update(cx, |view, cx| {
7802 view.add_selection_above(&AddSelectionAbove, cx);
7803 assert_eq!(
7804 view.selected_display_ranges(cx),
7805 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7806 );
7807 });
7808
7809 view.update(cx, |view, cx| {
7810 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7811 view.add_selection_below(&AddSelectionBelow, cx);
7812 assert_eq!(
7813 view.selected_display_ranges(cx),
7814 vec![
7815 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7816 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7817 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7818 ]
7819 );
7820 });
7821
7822 view.update(cx, |view, cx| {
7823 view.add_selection_below(&AddSelectionBelow, cx);
7824 assert_eq!(
7825 view.selected_display_ranges(cx),
7826 vec![
7827 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7828 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7829 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7830 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7831 ]
7832 );
7833 });
7834
7835 view.update(cx, |view, cx| {
7836 view.add_selection_above(&AddSelectionAbove, cx);
7837 assert_eq!(
7838 view.selected_display_ranges(cx),
7839 vec![
7840 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7841 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7842 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7843 ]
7844 );
7845 });
7846
7847 view.update(cx, |view, cx| {
7848 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7849 });
7850 view.update(cx, |view, cx| {
7851 view.add_selection_above(&AddSelectionAbove, cx);
7852 assert_eq!(
7853 view.selected_display_ranges(cx),
7854 vec![
7855 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7856 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7857 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7858 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7859 ]
7860 );
7861 });
7862
7863 view.update(cx, |view, cx| {
7864 view.add_selection_below(&AddSelectionBelow, cx);
7865 assert_eq!(
7866 view.selected_display_ranges(cx),
7867 vec![
7868 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7869 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7870 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7871 ]
7872 );
7873 });
7874 }
7875
7876 #[gpui::test]
7877 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7878 let settings = cx.read(Settings::test);
7879 let language = Arc::new(Language::new(
7880 LanguageConfig::default(),
7881 Some(tree_sitter_rust::language()),
7882 ));
7883
7884 let text = r#"
7885 use mod1::mod2::{mod3, mod4};
7886
7887 fn fn_1(param1: bool, param2: &str) {
7888 let var1 = "text";
7889 }
7890 "#
7891 .unindent();
7892
7893 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7894 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7895 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7896 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7897 .await;
7898
7899 view.update(cx, |view, cx| {
7900 view.select_display_ranges(
7901 &[
7902 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7903 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7904 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7905 ],
7906 cx,
7907 );
7908 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7909 });
7910 assert_eq!(
7911 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7912 &[
7913 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7914 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7915 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7916 ]
7917 );
7918
7919 view.update(cx, |view, cx| {
7920 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7921 });
7922 assert_eq!(
7923 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7924 &[
7925 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7926 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7927 ]
7928 );
7929
7930 view.update(cx, |view, cx| {
7931 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7932 });
7933 assert_eq!(
7934 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7935 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7936 );
7937
7938 // Trying to expand the selected syntax node one more time has no effect.
7939 view.update(cx, |view, cx| {
7940 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7941 });
7942 assert_eq!(
7943 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7944 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7945 );
7946
7947 view.update(cx, |view, cx| {
7948 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7949 });
7950 assert_eq!(
7951 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7952 &[
7953 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7954 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7955 ]
7956 );
7957
7958 view.update(cx, |view, cx| {
7959 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7960 });
7961 assert_eq!(
7962 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7963 &[
7964 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7965 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7966 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7967 ]
7968 );
7969
7970 view.update(cx, |view, cx| {
7971 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7972 });
7973 assert_eq!(
7974 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7975 &[
7976 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7977 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7978 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7979 ]
7980 );
7981
7982 // Trying to shrink the selected syntax node one more time has no effect.
7983 view.update(cx, |view, cx| {
7984 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7985 });
7986 assert_eq!(
7987 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7988 &[
7989 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7990 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7991 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7992 ]
7993 );
7994
7995 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7996 // a fold.
7997 view.update(cx, |view, cx| {
7998 view.fold_ranges(
7999 vec![
8000 Point::new(0, 21)..Point::new(0, 24),
8001 Point::new(3, 20)..Point::new(3, 22),
8002 ],
8003 cx,
8004 );
8005 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8006 });
8007 assert_eq!(
8008 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8009 &[
8010 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8011 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8012 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8013 ]
8014 );
8015 }
8016
8017 #[gpui::test]
8018 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8019 let settings = cx.read(Settings::test);
8020 let language = Arc::new(
8021 Language::new(
8022 LanguageConfig {
8023 brackets: vec![
8024 BracketPair {
8025 start: "{".to_string(),
8026 end: "}".to_string(),
8027 close: false,
8028 newline: true,
8029 },
8030 BracketPair {
8031 start: "(".to_string(),
8032 end: ")".to_string(),
8033 close: false,
8034 newline: true,
8035 },
8036 ],
8037 ..Default::default()
8038 },
8039 Some(tree_sitter_rust::language()),
8040 )
8041 .with_indents_query(
8042 r#"
8043 (_ "(" ")" @end) @indent
8044 (_ "{" "}" @end) @indent
8045 "#,
8046 )
8047 .unwrap(),
8048 );
8049
8050 let text = "fn a() {}";
8051
8052 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8053 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8054 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8055 editor
8056 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8057 .await;
8058
8059 editor.update(cx, |editor, cx| {
8060 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8061 editor.newline(&Newline, cx);
8062 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8063 assert_eq!(
8064 editor.selected_ranges(cx),
8065 &[
8066 Point::new(1, 4)..Point::new(1, 4),
8067 Point::new(3, 4)..Point::new(3, 4),
8068 Point::new(5, 0)..Point::new(5, 0)
8069 ]
8070 );
8071 });
8072 }
8073
8074 #[gpui::test]
8075 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8076 let settings = cx.read(Settings::test);
8077 let language = Arc::new(Language::new(
8078 LanguageConfig {
8079 brackets: vec![
8080 BracketPair {
8081 start: "{".to_string(),
8082 end: "}".to_string(),
8083 close: true,
8084 newline: true,
8085 },
8086 BracketPair {
8087 start: "/*".to_string(),
8088 end: " */".to_string(),
8089 close: true,
8090 newline: true,
8091 },
8092 ],
8093 ..Default::default()
8094 },
8095 Some(tree_sitter_rust::language()),
8096 ));
8097
8098 let text = r#"
8099 a
8100
8101 /
8102
8103 "#
8104 .unindent();
8105
8106 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8107 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8108 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8109 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8110 .await;
8111
8112 view.update(cx, |view, cx| {
8113 view.select_display_ranges(
8114 &[
8115 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8116 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8117 ],
8118 cx,
8119 );
8120 view.handle_input(&Input("{".to_string()), cx);
8121 view.handle_input(&Input("{".to_string()), cx);
8122 view.handle_input(&Input("{".to_string()), cx);
8123 assert_eq!(
8124 view.text(cx),
8125 "
8126 {{{}}}
8127 {{{}}}
8128 /
8129
8130 "
8131 .unindent()
8132 );
8133
8134 view.move_right(&MoveRight, cx);
8135 view.handle_input(&Input("}".to_string()), cx);
8136 view.handle_input(&Input("}".to_string()), cx);
8137 view.handle_input(&Input("}".to_string()), cx);
8138 assert_eq!(
8139 view.text(cx),
8140 "
8141 {{{}}}}
8142 {{{}}}}
8143 /
8144
8145 "
8146 .unindent()
8147 );
8148
8149 view.undo(&Undo, cx);
8150 view.handle_input(&Input("/".to_string()), cx);
8151 view.handle_input(&Input("*".to_string()), cx);
8152 assert_eq!(
8153 view.text(cx),
8154 "
8155 /* */
8156 /* */
8157 /
8158
8159 "
8160 .unindent()
8161 );
8162
8163 view.undo(&Undo, cx);
8164 view.select_display_ranges(
8165 &[
8166 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8167 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8168 ],
8169 cx,
8170 );
8171 view.handle_input(&Input("*".to_string()), cx);
8172 assert_eq!(
8173 view.text(cx),
8174 "
8175 a
8176
8177 /*
8178 *
8179 "
8180 .unindent()
8181 );
8182
8183 view.finalize_last_transaction(cx);
8184 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8185 view.handle_input(&Input("{".to_string()), cx);
8186 assert_eq!(
8187 view.text(cx),
8188 "
8189 {a
8190
8191 /*
8192 *
8193 "
8194 .unindent()
8195 );
8196
8197 view.undo(&Undo, cx);
8198 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8199 view.handle_input(&Input("{".to_string()), cx);
8200 assert_eq!(
8201 view.text(cx),
8202 "
8203 {a}
8204
8205 /*
8206 *
8207 "
8208 .unindent()
8209 );
8210 assert_eq!(
8211 view.selected_display_ranges(cx),
8212 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8213 );
8214 });
8215 }
8216
8217 #[gpui::test]
8218 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8219 let settings = cx.read(Settings::test);
8220
8221 let text = "
8222 a. b
8223 a. b
8224 a. b
8225 "
8226 .unindent();
8227 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8228 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8229
8230 editor.update(cx, |editor, cx| {
8231 let buffer = &editor.snapshot(cx).buffer_snapshot;
8232 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8233 let insertion_ranges = [
8234 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8235 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8236 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8237 ];
8238
8239 editor
8240 .insert_snippet(&insertion_ranges, snippet, cx)
8241 .unwrap();
8242 assert_eq!(
8243 editor.text(cx),
8244 "
8245 a.f(one, two, three) b
8246 a.f(one, two, three) b
8247 a.f(one, two, three) b
8248 "
8249 .unindent()
8250 );
8251 assert_eq!(
8252 editor.selected_ranges::<Point>(cx),
8253 &[
8254 Point::new(0, 4)..Point::new(0, 7),
8255 Point::new(0, 14)..Point::new(0, 19),
8256 Point::new(1, 4)..Point::new(1, 7),
8257 Point::new(1, 14)..Point::new(1, 19),
8258 Point::new(2, 4)..Point::new(2, 7),
8259 Point::new(2, 14)..Point::new(2, 19),
8260 ]
8261 );
8262
8263 // Can't move earlier than the first tab stop
8264 editor.move_to_prev_snippet_tabstop(cx);
8265 assert_eq!(
8266 editor.selected_ranges::<Point>(cx),
8267 &[
8268 Point::new(0, 4)..Point::new(0, 7),
8269 Point::new(0, 14)..Point::new(0, 19),
8270 Point::new(1, 4)..Point::new(1, 7),
8271 Point::new(1, 14)..Point::new(1, 19),
8272 Point::new(2, 4)..Point::new(2, 7),
8273 Point::new(2, 14)..Point::new(2, 19),
8274 ]
8275 );
8276
8277 assert!(editor.move_to_next_snippet_tabstop(cx));
8278 assert_eq!(
8279 editor.selected_ranges::<Point>(cx),
8280 &[
8281 Point::new(0, 9)..Point::new(0, 12),
8282 Point::new(1, 9)..Point::new(1, 12),
8283 Point::new(2, 9)..Point::new(2, 12)
8284 ]
8285 );
8286
8287 editor.move_to_prev_snippet_tabstop(cx);
8288 assert_eq!(
8289 editor.selected_ranges::<Point>(cx),
8290 &[
8291 Point::new(0, 4)..Point::new(0, 7),
8292 Point::new(0, 14)..Point::new(0, 19),
8293 Point::new(1, 4)..Point::new(1, 7),
8294 Point::new(1, 14)..Point::new(1, 19),
8295 Point::new(2, 4)..Point::new(2, 7),
8296 Point::new(2, 14)..Point::new(2, 19),
8297 ]
8298 );
8299
8300 assert!(editor.move_to_next_snippet_tabstop(cx));
8301 assert!(editor.move_to_next_snippet_tabstop(cx));
8302 assert_eq!(
8303 editor.selected_ranges::<Point>(cx),
8304 &[
8305 Point::new(0, 20)..Point::new(0, 20),
8306 Point::new(1, 20)..Point::new(1, 20),
8307 Point::new(2, 20)..Point::new(2, 20)
8308 ]
8309 );
8310
8311 // As soon as the last tab stop is reached, snippet state is gone
8312 editor.move_to_prev_snippet_tabstop(cx);
8313 assert_eq!(
8314 editor.selected_ranges::<Point>(cx),
8315 &[
8316 Point::new(0, 20)..Point::new(0, 20),
8317 Point::new(1, 20)..Point::new(1, 20),
8318 Point::new(2, 20)..Point::new(2, 20)
8319 ]
8320 );
8321 });
8322 }
8323
8324 #[gpui::test]
8325 async fn test_completion(cx: &mut gpui::TestAppContext) {
8326 let settings = cx.read(Settings::test);
8327
8328 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8329 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8330 completion_provider: Some(lsp::CompletionOptions {
8331 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8332 ..Default::default()
8333 }),
8334 ..Default::default()
8335 });
8336 let language = Arc::new(Language::new(
8337 LanguageConfig {
8338 name: "Rust".into(),
8339 path_suffixes: vec!["rs".to_string()],
8340 language_server: Some(language_server_config),
8341 ..Default::default()
8342 },
8343 Some(tree_sitter_rust::language()),
8344 ));
8345
8346 let text = "
8347 one
8348 two
8349 three
8350 "
8351 .unindent();
8352
8353 let fs = FakeFs::new(cx.background().clone());
8354 fs.insert_file("/file.rs", text).await;
8355
8356 let project = Project::test(fs, cx);
8357 project.update(cx, |project, _| project.languages().add(language));
8358
8359 let worktree_id = project
8360 .update(cx, |project, cx| {
8361 project.find_or_create_local_worktree("/file.rs", true, cx)
8362 })
8363 .await
8364 .unwrap()
8365 .0
8366 .read_with(cx, |tree, _| tree.id());
8367 let buffer = project
8368 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8369 .await
8370 .unwrap();
8371 let mut fake_server = fake_servers.next().await.unwrap();
8372
8373 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8374 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8375
8376 editor.update(cx, |editor, cx| {
8377 editor.project = Some(project);
8378 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8379 editor.handle_input(&Input(".".to_string()), cx);
8380 });
8381
8382 handle_completion_request(
8383 &mut fake_server,
8384 "/file.rs",
8385 Point::new(0, 4),
8386 vec![
8387 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8388 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8389 ],
8390 )
8391 .await;
8392 editor
8393 .condition(&cx, |editor, _| editor.context_menu_visible())
8394 .await;
8395
8396 let apply_additional_edits = editor.update(cx, |editor, cx| {
8397 editor.move_down(&MoveDown, cx);
8398 let apply_additional_edits = editor
8399 .confirm_completion(&ConfirmCompletion(None), cx)
8400 .unwrap();
8401 assert_eq!(
8402 editor.text(cx),
8403 "
8404 one.second_completion
8405 two
8406 three
8407 "
8408 .unindent()
8409 );
8410 apply_additional_edits
8411 });
8412
8413 handle_resolve_completion_request(
8414 &mut fake_server,
8415 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8416 )
8417 .await;
8418 apply_additional_edits.await.unwrap();
8419 assert_eq!(
8420 editor.read_with(cx, |editor, cx| editor.text(cx)),
8421 "
8422 one.second_completion
8423 two
8424 three
8425 additional edit
8426 "
8427 .unindent()
8428 );
8429
8430 editor.update(cx, |editor, cx| {
8431 editor.select_ranges(
8432 [
8433 Point::new(1, 3)..Point::new(1, 3),
8434 Point::new(2, 5)..Point::new(2, 5),
8435 ],
8436 None,
8437 cx,
8438 );
8439
8440 editor.handle_input(&Input(" ".to_string()), cx);
8441 assert!(editor.context_menu.is_none());
8442 editor.handle_input(&Input("s".to_string()), cx);
8443 assert!(editor.context_menu.is_none());
8444 });
8445
8446 handle_completion_request(
8447 &mut fake_server,
8448 "/file.rs",
8449 Point::new(2, 7),
8450 vec![
8451 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8452 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8453 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8454 ],
8455 )
8456 .await;
8457 editor
8458 .condition(&cx, |editor, _| editor.context_menu_visible())
8459 .await;
8460
8461 editor.update(cx, |editor, cx| {
8462 editor.handle_input(&Input("i".to_string()), cx);
8463 });
8464
8465 handle_completion_request(
8466 &mut fake_server,
8467 "/file.rs",
8468 Point::new(2, 8),
8469 vec![
8470 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8471 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8472 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8473 ],
8474 )
8475 .await;
8476 editor
8477 .condition(&cx, |editor, _| editor.context_menu_visible())
8478 .await;
8479
8480 let apply_additional_edits = editor.update(cx, |editor, cx| {
8481 let apply_additional_edits = editor
8482 .confirm_completion(&ConfirmCompletion(None), cx)
8483 .unwrap();
8484 assert_eq!(
8485 editor.text(cx),
8486 "
8487 one.second_completion
8488 two sixth_completion
8489 three sixth_completion
8490 additional edit
8491 "
8492 .unindent()
8493 );
8494 apply_additional_edits
8495 });
8496 handle_resolve_completion_request(&mut fake_server, None).await;
8497 apply_additional_edits.await.unwrap();
8498
8499 async fn handle_completion_request(
8500 fake: &mut FakeLanguageServer,
8501 path: &'static str,
8502 position: Point,
8503 completions: Vec<(Range<Point>, &'static str)>,
8504 ) {
8505 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8506 assert_eq!(
8507 params.text_document_position.text_document.uri,
8508 lsp::Url::from_file_path(path).unwrap()
8509 );
8510 assert_eq!(
8511 params.text_document_position.position,
8512 lsp::Position::new(position.row, position.column)
8513 );
8514 Some(lsp::CompletionResponse::Array(
8515 completions
8516 .iter()
8517 .map(|(range, new_text)| lsp::CompletionItem {
8518 label: new_text.to_string(),
8519 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8520 range: lsp::Range::new(
8521 lsp::Position::new(range.start.row, range.start.column),
8522 lsp::Position::new(range.start.row, range.start.column),
8523 ),
8524 new_text: new_text.to_string(),
8525 })),
8526 ..Default::default()
8527 })
8528 .collect(),
8529 ))
8530 })
8531 .next()
8532 .await;
8533 }
8534
8535 async fn handle_resolve_completion_request(
8536 fake: &mut FakeLanguageServer,
8537 edit: Option<(Range<Point>, &'static str)>,
8538 ) {
8539 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8540 lsp::CompletionItem {
8541 additional_text_edits: edit.clone().map(|(range, new_text)| {
8542 vec![lsp::TextEdit::new(
8543 lsp::Range::new(
8544 lsp::Position::new(range.start.row, range.start.column),
8545 lsp::Position::new(range.end.row, range.end.column),
8546 ),
8547 new_text.to_string(),
8548 )]
8549 }),
8550 ..Default::default()
8551 }
8552 })
8553 .next()
8554 .await;
8555 }
8556 }
8557
8558 #[gpui::test]
8559 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8560 let settings = cx.read(Settings::test);
8561 let language = Arc::new(Language::new(
8562 LanguageConfig {
8563 line_comment: Some("// ".to_string()),
8564 ..Default::default()
8565 },
8566 Some(tree_sitter_rust::language()),
8567 ));
8568
8569 let text = "
8570 fn a() {
8571 //b();
8572 // c();
8573 // d();
8574 }
8575 "
8576 .unindent();
8577
8578 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8579 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8580 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8581
8582 view.update(cx, |editor, cx| {
8583 // If multiple selections intersect a line, the line is only
8584 // toggled once.
8585 editor.select_display_ranges(
8586 &[
8587 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8588 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8589 ],
8590 cx,
8591 );
8592 editor.toggle_comments(&ToggleComments, cx);
8593 assert_eq!(
8594 editor.text(cx),
8595 "
8596 fn a() {
8597 b();
8598 c();
8599 d();
8600 }
8601 "
8602 .unindent()
8603 );
8604
8605 // The comment prefix is inserted at the same column for every line
8606 // in a selection.
8607 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8608 editor.toggle_comments(&ToggleComments, cx);
8609 assert_eq!(
8610 editor.text(cx),
8611 "
8612 fn a() {
8613 // b();
8614 // c();
8615 // d();
8616 }
8617 "
8618 .unindent()
8619 );
8620
8621 // If a selection ends at the beginning of a line, that line is not toggled.
8622 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8623 editor.toggle_comments(&ToggleComments, cx);
8624 assert_eq!(
8625 editor.text(cx),
8626 "
8627 fn a() {
8628 // b();
8629 c();
8630 // d();
8631 }
8632 "
8633 .unindent()
8634 );
8635 });
8636 }
8637
8638 #[gpui::test]
8639 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8640 let settings = Settings::test(cx);
8641 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8642 let multibuffer = cx.add_model(|cx| {
8643 let mut multibuffer = MultiBuffer::new(0);
8644 multibuffer.push_excerpts(
8645 buffer.clone(),
8646 [
8647 Point::new(0, 0)..Point::new(0, 4),
8648 Point::new(1, 0)..Point::new(1, 4),
8649 ],
8650 cx,
8651 );
8652 multibuffer
8653 });
8654
8655 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8656
8657 let (_, view) = cx.add_window(Default::default(), |cx| {
8658 build_editor(multibuffer, settings, cx)
8659 });
8660 view.update(cx, |view, cx| {
8661 assert_eq!(view.text(cx), "aaaa\nbbbb");
8662 view.select_ranges(
8663 [
8664 Point::new(0, 0)..Point::new(0, 0),
8665 Point::new(1, 0)..Point::new(1, 0),
8666 ],
8667 None,
8668 cx,
8669 );
8670
8671 view.handle_input(&Input("X".to_string()), cx);
8672 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8673 assert_eq!(
8674 view.selected_ranges(cx),
8675 [
8676 Point::new(0, 1)..Point::new(0, 1),
8677 Point::new(1, 1)..Point::new(1, 1),
8678 ]
8679 )
8680 });
8681 }
8682
8683 #[gpui::test]
8684 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8685 let settings = Settings::test(cx);
8686 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8687 let multibuffer = cx.add_model(|cx| {
8688 let mut multibuffer = MultiBuffer::new(0);
8689 multibuffer.push_excerpts(
8690 buffer,
8691 [
8692 Point::new(0, 0)..Point::new(1, 4),
8693 Point::new(1, 0)..Point::new(2, 4),
8694 ],
8695 cx,
8696 );
8697 multibuffer
8698 });
8699
8700 assert_eq!(
8701 multibuffer.read(cx).read(cx).text(),
8702 "aaaa\nbbbb\nbbbb\ncccc"
8703 );
8704
8705 let (_, view) = cx.add_window(Default::default(), |cx| {
8706 build_editor(multibuffer, settings, cx)
8707 });
8708 view.update(cx, |view, cx| {
8709 view.select_ranges(
8710 [
8711 Point::new(1, 1)..Point::new(1, 1),
8712 Point::new(2, 3)..Point::new(2, 3),
8713 ],
8714 None,
8715 cx,
8716 );
8717
8718 view.handle_input(&Input("X".to_string()), cx);
8719 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8720 assert_eq!(
8721 view.selected_ranges(cx),
8722 [
8723 Point::new(1, 2)..Point::new(1, 2),
8724 Point::new(2, 5)..Point::new(2, 5),
8725 ]
8726 );
8727
8728 view.newline(&Newline, cx);
8729 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8730 assert_eq!(
8731 view.selected_ranges(cx),
8732 [
8733 Point::new(2, 0)..Point::new(2, 0),
8734 Point::new(6, 0)..Point::new(6, 0),
8735 ]
8736 );
8737 });
8738 }
8739
8740 #[gpui::test]
8741 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8742 let settings = Settings::test(cx);
8743 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8744 let mut excerpt1_id = None;
8745 let multibuffer = cx.add_model(|cx| {
8746 let mut multibuffer = MultiBuffer::new(0);
8747 excerpt1_id = multibuffer
8748 .push_excerpts(
8749 buffer.clone(),
8750 [
8751 Point::new(0, 0)..Point::new(1, 4),
8752 Point::new(1, 0)..Point::new(2, 4),
8753 ],
8754 cx,
8755 )
8756 .into_iter()
8757 .next();
8758 multibuffer
8759 });
8760 assert_eq!(
8761 multibuffer.read(cx).read(cx).text(),
8762 "aaaa\nbbbb\nbbbb\ncccc"
8763 );
8764 let (_, editor) = cx.add_window(Default::default(), |cx| {
8765 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8766 editor.select_ranges(
8767 [
8768 Point::new(1, 3)..Point::new(1, 3),
8769 Point::new(2, 1)..Point::new(2, 1),
8770 ],
8771 None,
8772 cx,
8773 );
8774 editor
8775 });
8776
8777 // Refreshing selections is a no-op when excerpts haven't changed.
8778 editor.update(cx, |editor, cx| {
8779 editor.refresh_selections(cx);
8780 assert_eq!(
8781 editor.selected_ranges(cx),
8782 [
8783 Point::new(1, 3)..Point::new(1, 3),
8784 Point::new(2, 1)..Point::new(2, 1),
8785 ]
8786 );
8787 });
8788
8789 multibuffer.update(cx, |multibuffer, cx| {
8790 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8791 });
8792 editor.update(cx, |editor, cx| {
8793 // Removing an excerpt causes the first selection to become degenerate.
8794 assert_eq!(
8795 editor.selected_ranges(cx),
8796 [
8797 Point::new(0, 0)..Point::new(0, 0),
8798 Point::new(0, 1)..Point::new(0, 1)
8799 ]
8800 );
8801
8802 // Refreshing selections will relocate the first selection to the original buffer
8803 // location.
8804 editor.refresh_selections(cx);
8805 assert_eq!(
8806 editor.selected_ranges(cx),
8807 [
8808 Point::new(0, 1)..Point::new(0, 1),
8809 Point::new(0, 3)..Point::new(0, 3)
8810 ]
8811 );
8812 });
8813 }
8814
8815 #[gpui::test]
8816 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8817 let settings = cx.read(Settings::test);
8818 let language = Arc::new(Language::new(
8819 LanguageConfig {
8820 brackets: vec![
8821 BracketPair {
8822 start: "{".to_string(),
8823 end: "}".to_string(),
8824 close: true,
8825 newline: true,
8826 },
8827 BracketPair {
8828 start: "/* ".to_string(),
8829 end: " */".to_string(),
8830 close: true,
8831 newline: true,
8832 },
8833 ],
8834 ..Default::default()
8835 },
8836 Some(tree_sitter_rust::language()),
8837 ));
8838
8839 let text = concat!(
8840 "{ }\n", // Suppress rustfmt
8841 " x\n", //
8842 " /* */\n", //
8843 "x\n", //
8844 "{{} }\n", //
8845 );
8846
8847 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8848 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8849 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8850 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8851 .await;
8852
8853 view.update(cx, |view, cx| {
8854 view.select_display_ranges(
8855 &[
8856 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8857 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8858 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8859 ],
8860 cx,
8861 );
8862 view.newline(&Newline, cx);
8863
8864 assert_eq!(
8865 view.buffer().read(cx).read(cx).text(),
8866 concat!(
8867 "{ \n", // Suppress rustfmt
8868 "\n", //
8869 "}\n", //
8870 " x\n", //
8871 " /* \n", //
8872 " \n", //
8873 " */\n", //
8874 "x\n", //
8875 "{{} \n", //
8876 "}\n", //
8877 )
8878 );
8879 });
8880 }
8881
8882 #[gpui::test]
8883 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8884 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8885 let settings = Settings::test(&cx);
8886 let (_, editor) = cx.add_window(Default::default(), |cx| {
8887 build_editor(buffer.clone(), settings, cx)
8888 });
8889
8890 editor.update(cx, |editor, cx| {
8891 struct Type1;
8892 struct Type2;
8893
8894 let buffer = buffer.read(cx).snapshot(cx);
8895
8896 let anchor_range = |range: Range<Point>| {
8897 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8898 };
8899
8900 editor.highlight_ranges::<Type1>(
8901 vec![
8902 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8903 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8904 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8905 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8906 ],
8907 Color::red(),
8908 cx,
8909 );
8910 editor.highlight_ranges::<Type2>(
8911 vec![
8912 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8913 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8914 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8915 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8916 ],
8917 Color::green(),
8918 cx,
8919 );
8920
8921 let snapshot = editor.snapshot(cx);
8922 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8923 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8924 &snapshot,
8925 );
8926 // Enforce a consistent ordering based on color without relying on the ordering of the
8927 // highlight's `TypeId` which is non-deterministic.
8928 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8929 assert_eq!(
8930 highlighted_ranges,
8931 &[
8932 (
8933 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8934 Color::green(),
8935 ),
8936 (
8937 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8938 Color::green(),
8939 ),
8940 (
8941 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8942 Color::red(),
8943 ),
8944 (
8945 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8946 Color::red(),
8947 ),
8948 ]
8949 );
8950 assert_eq!(
8951 editor.highlighted_ranges_in_range(
8952 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8953 &snapshot,
8954 ),
8955 &[(
8956 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8957 Color::red(),
8958 )]
8959 );
8960 });
8961 }
8962
8963 #[test]
8964 fn test_combine_syntax_and_fuzzy_match_highlights() {
8965 let string = "abcdefghijklmnop";
8966 let default = HighlightStyle::default();
8967 let syntax_ranges = [
8968 (
8969 0..3,
8970 HighlightStyle {
8971 color: Color::red(),
8972 ..default
8973 },
8974 ),
8975 (
8976 4..8,
8977 HighlightStyle {
8978 color: Color::green(),
8979 ..default
8980 },
8981 ),
8982 ];
8983 let match_indices = [4, 6, 7, 8];
8984 assert_eq!(
8985 combine_syntax_and_fuzzy_match_highlights(
8986 &string,
8987 default,
8988 syntax_ranges.into_iter(),
8989 &match_indices,
8990 ),
8991 &[
8992 (
8993 0..3,
8994 HighlightStyle {
8995 color: Color::red(),
8996 ..default
8997 },
8998 ),
8999 (
9000 4..5,
9001 HighlightStyle {
9002 color: Color::green(),
9003 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9004 ..default
9005 },
9006 ),
9007 (
9008 5..6,
9009 HighlightStyle {
9010 color: Color::green(),
9011 ..default
9012 },
9013 ),
9014 (
9015 6..8,
9016 HighlightStyle {
9017 color: Color::green(),
9018 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9019 ..default
9020 },
9021 ),
9022 (
9023 8..9,
9024 HighlightStyle {
9025 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9026 ..default
9027 },
9028 ),
9029 ]
9030 );
9031 }
9032
9033 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9034 let point = DisplayPoint::new(row as u32, column as u32);
9035 point..point
9036 }
9037
9038 fn build_editor(
9039 buffer: ModelHandle<MultiBuffer>,
9040 settings: Settings,
9041 cx: &mut ViewContext<Editor>,
9042 ) -> Editor {
9043 let settings = watch::channel_with(settings);
9044 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9045 }
9046}
9047
9048trait RangeExt<T> {
9049 fn sorted(&self) -> Range<T>;
9050 fn to_inclusive(&self) -> RangeInclusive<T>;
9051}
9052
9053impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9054 fn sorted(&self) -> Self {
9055 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9056 }
9057
9058 fn to_inclusive(&self) -> RangeInclusive<T> {
9059 self.start.clone()..=self.end.clone()
9060 }
9061}