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 cursor_shape: CursorShape,
454}
455
456pub struct EditorSnapshot {
457 pub mode: EditorMode,
458 pub display_snapshot: DisplaySnapshot,
459 pub placeholder_text: Option<Arc<str>>,
460 is_focused: bool,
461 scroll_position: Vector2F,
462 scroll_top_anchor: Option<Anchor>,
463}
464
465#[derive(Clone)]
466pub struct PendingSelection {
467 selection: Selection<Anchor>,
468 mode: SelectMode,
469}
470
471struct AddSelectionsState {
472 above: bool,
473 stack: Vec<usize>,
474}
475
476struct SelectNextState {
477 query: AhoCorasick,
478 wordwise: bool,
479 done: bool,
480}
481
482struct BracketPairState {
483 ranges: Vec<Range<Anchor>>,
484 pair: BracketPair,
485}
486
487struct SnippetState {
488 ranges: Vec<Vec<Range<Anchor>>>,
489 active_index: usize,
490}
491
492pub struct RenameState {
493 pub range: Range<Anchor>,
494 pub old_name: String,
495 pub editor: ViewHandle<Editor>,
496 block_id: BlockId,
497}
498
499struct InvalidationStack<T>(Vec<T>);
500
501enum ContextMenu {
502 Completions(CompletionsMenu),
503 CodeActions(CodeActionsMenu),
504}
505
506impl ContextMenu {
507 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
508 if self.visible() {
509 match self {
510 ContextMenu::Completions(menu) => menu.select_prev(cx),
511 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
512 }
513 true
514 } else {
515 false
516 }
517 }
518
519 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
520 if self.visible() {
521 match self {
522 ContextMenu::Completions(menu) => menu.select_next(cx),
523 ContextMenu::CodeActions(menu) => menu.select_next(cx),
524 }
525 true
526 } else {
527 false
528 }
529 }
530
531 fn visible(&self) -> bool {
532 match self {
533 ContextMenu::Completions(menu) => menu.visible(),
534 ContextMenu::CodeActions(menu) => menu.visible(),
535 }
536 }
537
538 fn render(
539 &self,
540 cursor_position: DisplayPoint,
541 style: EditorStyle,
542 cx: &AppContext,
543 ) -> (DisplayPoint, ElementBox) {
544 match self {
545 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
546 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
547 }
548 }
549}
550
551struct CompletionsMenu {
552 id: CompletionId,
553 initial_position: Anchor,
554 buffer: ModelHandle<Buffer>,
555 completions: Arc<[Completion]>,
556 match_candidates: Vec<StringMatchCandidate>,
557 matches: Arc<[StringMatch]>,
558 selected_item: usize,
559 list: UniformListState,
560}
561
562impl CompletionsMenu {
563 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
564 if self.selected_item > 0 {
565 self.selected_item -= 1;
566 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
567 }
568 cx.notify();
569 }
570
571 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
572 if self.selected_item + 1 < self.matches.len() {
573 self.selected_item += 1;
574 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
575 }
576 cx.notify();
577 }
578
579 fn visible(&self) -> bool {
580 !self.matches.is_empty()
581 }
582
583 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
584 enum CompletionTag {}
585
586 let completions = self.completions.clone();
587 let matches = self.matches.clone();
588 let selected_item = self.selected_item;
589 let container_style = style.autocomplete.container;
590 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
591 let start_ix = range.start;
592 for (ix, mat) in matches[range].iter().enumerate() {
593 let completion = &completions[mat.candidate_id];
594 let item_ix = start_ix + ix;
595 items.push(
596 MouseEventHandler::new::<CompletionTag, _, _>(
597 mat.candidate_id,
598 cx,
599 |state, _| {
600 let item_style = if item_ix == selected_item {
601 style.autocomplete.selected_item
602 } else if state.hovered {
603 style.autocomplete.hovered_item
604 } else {
605 style.autocomplete.item
606 };
607
608 Text::new(completion.label.text.clone(), style.text.clone())
609 .with_soft_wrap(false)
610 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
611 &completion.label.text,
612 style.text.color.into(),
613 styled_runs_for_code_label(
614 &completion.label,
615 style.text.color,
616 &style.syntax,
617 ),
618 &mat.positions,
619 ))
620 .contained()
621 .with_style(item_style)
622 .boxed()
623 },
624 )
625 .with_cursor_style(CursorStyle::PointingHand)
626 .on_mouse_down(move |cx| {
627 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
628 })
629 .boxed(),
630 );
631 }
632 })
633 .with_width_from_item(
634 self.matches
635 .iter()
636 .enumerate()
637 .max_by_key(|(_, mat)| {
638 self.completions[mat.candidate_id]
639 .label
640 .text
641 .chars()
642 .count()
643 })
644 .map(|(ix, _)| ix),
645 )
646 .contained()
647 .with_style(container_style)
648 .boxed()
649 }
650
651 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
652 let mut matches = if let Some(query) = query {
653 fuzzy::match_strings(
654 &self.match_candidates,
655 query,
656 false,
657 100,
658 &Default::default(),
659 executor,
660 )
661 .await
662 } else {
663 self.match_candidates
664 .iter()
665 .enumerate()
666 .map(|(candidate_id, candidate)| StringMatch {
667 candidate_id,
668 score: Default::default(),
669 positions: Default::default(),
670 string: candidate.string.clone(),
671 })
672 .collect()
673 };
674 matches.sort_unstable_by_key(|mat| {
675 (
676 Reverse(OrderedFloat(mat.score)),
677 self.completions[mat.candidate_id].sort_key(),
678 )
679 });
680
681 for mat in &mut matches {
682 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
683 for position in &mut mat.positions {
684 *position += filter_start;
685 }
686 }
687
688 self.matches = matches.into();
689 }
690}
691
692#[derive(Clone)]
693struct CodeActionsMenu {
694 actions: Arc<[CodeAction]>,
695 buffer: ModelHandle<Buffer>,
696 selected_item: usize,
697 list: UniformListState,
698 deployed_from_indicator: bool,
699}
700
701impl CodeActionsMenu {
702 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
703 if self.selected_item > 0 {
704 self.selected_item -= 1;
705 cx.notify()
706 }
707 }
708
709 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
710 if self.selected_item + 1 < self.actions.len() {
711 self.selected_item += 1;
712 cx.notify()
713 }
714 }
715
716 fn visible(&self) -> bool {
717 !self.actions.is_empty()
718 }
719
720 fn render(
721 &self,
722 mut cursor_position: DisplayPoint,
723 style: EditorStyle,
724 ) -> (DisplayPoint, ElementBox) {
725 enum ActionTag {}
726
727 let container_style = style.autocomplete.container;
728 let actions = self.actions.clone();
729 let selected_item = self.selected_item;
730 let element =
731 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
732 let start_ix = range.start;
733 for (ix, action) in actions[range].iter().enumerate() {
734 let item_ix = start_ix + ix;
735 items.push(
736 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
737 let item_style = if item_ix == selected_item {
738 style.autocomplete.selected_item
739 } else if state.hovered {
740 style.autocomplete.hovered_item
741 } else {
742 style.autocomplete.item
743 };
744
745 Text::new(action.lsp_action.title.clone(), style.text.clone())
746 .with_soft_wrap(false)
747 .contained()
748 .with_style(item_style)
749 .boxed()
750 })
751 .with_cursor_style(CursorStyle::PointingHand)
752 .on_mouse_down(move |cx| {
753 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
754 })
755 .boxed(),
756 );
757 }
758 })
759 .with_width_from_item(
760 self.actions
761 .iter()
762 .enumerate()
763 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
764 .map(|(ix, _)| ix),
765 )
766 .contained()
767 .with_style(container_style)
768 .boxed();
769
770 if self.deployed_from_indicator {
771 *cursor_position.column_mut() = 0;
772 }
773
774 (cursor_position, element)
775 }
776}
777
778#[derive(Debug)]
779struct ActiveDiagnosticGroup {
780 primary_range: Range<Anchor>,
781 primary_message: String,
782 blocks: HashMap<BlockId, Diagnostic>,
783 is_valid: bool,
784}
785
786#[derive(Serialize, Deserialize)]
787struct ClipboardSelection {
788 len: usize,
789 is_entire_line: bool,
790}
791
792pub struct NavigationData {
793 anchor: Anchor,
794 offset: usize,
795}
796
797impl Editor {
798 pub fn single_line(
799 settings: watch::Receiver<Settings>,
800 field_editor_style: Option<GetFieldEditorTheme>,
801 cx: &mut ViewContext<Self>,
802 ) -> Self {
803 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
804 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
805 Self::new(
806 EditorMode::SingleLine,
807 buffer,
808 None,
809 settings,
810 field_editor_style,
811 cx,
812 )
813 }
814
815 pub fn auto_height(
816 max_lines: usize,
817 settings: watch::Receiver<Settings>,
818 field_editor_style: Option<GetFieldEditorTheme>,
819 cx: &mut ViewContext<Self>,
820 ) -> Self {
821 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
822 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
823 Self::new(
824 EditorMode::AutoHeight { max_lines },
825 buffer,
826 None,
827 settings,
828 field_editor_style,
829 cx,
830 )
831 }
832
833 pub fn for_buffer(
834 buffer: ModelHandle<MultiBuffer>,
835 project: Option<ModelHandle<Project>>,
836 settings: watch::Receiver<Settings>,
837 cx: &mut ViewContext<Self>,
838 ) -> Self {
839 Self::new(EditorMode::Full, buffer, project, settings, None, cx)
840 }
841
842 pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
843 let mut clone = Self::new(
844 self.mode,
845 self.buffer.clone(),
846 self.project.clone(),
847 self.settings.clone(),
848 self.get_field_editor_theme,
849 cx,
850 );
851 clone.scroll_position = self.scroll_position;
852 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
853 clone.nav_history = Some(nav_history);
854 clone.searchable = self.searchable;
855 clone
856 }
857
858 fn new(
859 mode: EditorMode,
860 buffer: ModelHandle<MultiBuffer>,
861 project: Option<ModelHandle<Project>>,
862 settings: watch::Receiver<Settings>,
863 get_field_editor_theme: Option<GetFieldEditorTheme>,
864 cx: &mut ViewContext<Self>,
865 ) -> Self {
866 let display_map = cx.add_model(|cx| {
867 let settings = settings.borrow();
868 let style = build_style(&*settings, get_field_editor_theme, cx);
869 DisplayMap::new(
870 buffer.clone(),
871 settings.tab_size,
872 style.text.font_id,
873 style.text.font_size,
874 None,
875 2,
876 1,
877 cx,
878 )
879 });
880 cx.observe(&buffer, Self::on_buffer_changed).detach();
881 cx.subscribe(&buffer, Self::on_buffer_event).detach();
882 cx.observe(&display_map, Self::on_display_map_changed)
883 .detach();
884
885 let mut this = Self {
886 handle: cx.weak_handle(),
887 buffer,
888 display_map,
889 selections: Arc::from([]),
890 pending_selection: Some(PendingSelection {
891 selection: Selection {
892 id: 0,
893 start: Anchor::min(),
894 end: Anchor::min(),
895 reversed: false,
896 goal: SelectionGoal::None,
897 },
898 mode: SelectMode::Character,
899 }),
900 columnar_selection_tail: None,
901 next_selection_id: 1,
902 add_selections_state: None,
903 select_next_state: None,
904 selection_history: Default::default(),
905 autoclose_stack: Default::default(),
906 snippet_stack: Default::default(),
907 select_larger_syntax_node_stack: Vec::new(),
908 active_diagnostics: None,
909 settings,
910 soft_wrap_mode_override: None,
911 get_field_editor_theme,
912 project,
913 scroll_position: Vector2F::zero(),
914 scroll_top_anchor: None,
915 autoscroll_request: None,
916 focused: false,
917 show_local_cursors: false,
918 blink_epoch: 0,
919 blinking_paused: false,
920 mode,
921 vertical_scroll_margin: 3.0,
922 placeholder_text: None,
923 highlighted_rows: None,
924 highlighted_ranges: Default::default(),
925 nav_history: None,
926 context_menu: None,
927 completion_tasks: Default::default(),
928 next_completion_id: 0,
929 available_code_actions: Default::default(),
930 code_actions_task: Default::default(),
931 document_highlights_task: Default::default(),
932 pending_rename: Default::default(),
933 searchable: true,
934 cursor_shape: Default::default(),
935 };
936 this.end_selection(cx);
937 this
938 }
939
940 pub fn open_new(
941 workspace: &mut Workspace,
942 _: &workspace::OpenNew,
943 cx: &mut ViewContext<Workspace>,
944 ) {
945 let project = workspace.project();
946 if project.read(cx).is_remote() {
947 cx.propagate_action();
948 } else if let Some(buffer) = project
949 .update(cx, |project, cx| project.create_buffer(cx))
950 .log_err()
951 {
952 workspace.open_item(BufferItemHandle(buffer), cx);
953 }
954 }
955
956 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
957 self.buffer.read(cx).replica_id()
958 }
959
960 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
961 &self.buffer
962 }
963
964 pub fn title(&self, cx: &AppContext) -> String {
965 self.buffer().read(cx).title(cx)
966 }
967
968 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
969 EditorSnapshot {
970 mode: self.mode,
971 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
972 scroll_position: self.scroll_position,
973 scroll_top_anchor: self.scroll_top_anchor.clone(),
974 placeholder_text: self.placeholder_text.clone(),
975 is_focused: self
976 .handle
977 .upgrade(cx)
978 .map_or(false, |handle| handle.is_focused(cx)),
979 }
980 }
981
982 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
983 self.buffer.read(cx).language(cx)
984 }
985
986 fn style(&self, cx: &AppContext) -> EditorStyle {
987 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
988 }
989
990 pub fn set_placeholder_text(
991 &mut self,
992 placeholder_text: impl Into<Arc<str>>,
993 cx: &mut ViewContext<Self>,
994 ) {
995 self.placeholder_text = Some(placeholder_text.into());
996 cx.notify();
997 }
998
999 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1000 self.vertical_scroll_margin = margin_rows as f32;
1001 cx.notify();
1002 }
1003
1004 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1005 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1006
1007 if scroll_position.y() == 0. {
1008 self.scroll_top_anchor = None;
1009 self.scroll_position = scroll_position;
1010 } else {
1011 let scroll_top_buffer_offset =
1012 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1013 let anchor = map
1014 .buffer_snapshot
1015 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1016 self.scroll_position = vec2f(
1017 scroll_position.x(),
1018 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1019 );
1020 self.scroll_top_anchor = Some(anchor);
1021 }
1022
1023 cx.notify();
1024 }
1025
1026 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1027 self.cursor_shape = cursor_shape;
1028 cx.notify();
1029 }
1030
1031 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1032 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1033 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1034 }
1035
1036 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1037 if max < self.scroll_position.x() {
1038 self.scroll_position.set_x(max);
1039 true
1040 } else {
1041 false
1042 }
1043 }
1044
1045 pub fn autoscroll_vertically(
1046 &mut self,
1047 viewport_height: f32,
1048 line_height: f32,
1049 cx: &mut ViewContext<Self>,
1050 ) -> bool {
1051 let visible_lines = viewport_height / line_height;
1052 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1053 let mut scroll_position =
1054 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1055 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1056 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1057 } else {
1058 display_map.max_point().row().saturating_sub(1) as f32
1059 };
1060 if scroll_position.y() > max_scroll_top {
1061 scroll_position.set_y(max_scroll_top);
1062 self.set_scroll_position(scroll_position, cx);
1063 }
1064
1065 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1066 autoscroll
1067 } else {
1068 return false;
1069 };
1070
1071 let first_cursor_top;
1072 let last_cursor_bottom;
1073 if let Some(highlighted_rows) = &self.highlighted_rows {
1074 first_cursor_top = highlighted_rows.start as f32;
1075 last_cursor_bottom = first_cursor_top + 1.;
1076 } else if autoscroll == Autoscroll::Newest {
1077 let newest_selection =
1078 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1079 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1080 last_cursor_bottom = first_cursor_top + 1.;
1081 } else {
1082 let selections = self.local_selections::<Point>(cx);
1083 first_cursor_top = selections
1084 .first()
1085 .unwrap()
1086 .head()
1087 .to_display_point(&display_map)
1088 .row() as f32;
1089 last_cursor_bottom = selections
1090 .last()
1091 .unwrap()
1092 .head()
1093 .to_display_point(&display_map)
1094 .row() as f32
1095 + 1.0;
1096 }
1097
1098 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1099 0.
1100 } else {
1101 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1102 };
1103 if margin < 0.0 {
1104 return false;
1105 }
1106
1107 match autoscroll {
1108 Autoscroll::Fit | Autoscroll::Newest => {
1109 let margin = margin.min(self.vertical_scroll_margin);
1110 let target_top = (first_cursor_top - margin).max(0.0);
1111 let target_bottom = last_cursor_bottom + margin;
1112 let start_row = scroll_position.y();
1113 let end_row = start_row + visible_lines;
1114
1115 if target_top < start_row {
1116 scroll_position.set_y(target_top);
1117 self.set_scroll_position(scroll_position, cx);
1118 } else if target_bottom >= end_row {
1119 scroll_position.set_y(target_bottom - visible_lines);
1120 self.set_scroll_position(scroll_position, cx);
1121 }
1122 }
1123 Autoscroll::Center => {
1124 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1125 self.set_scroll_position(scroll_position, cx);
1126 }
1127 }
1128
1129 true
1130 }
1131
1132 pub fn autoscroll_horizontally(
1133 &mut self,
1134 start_row: u32,
1135 viewport_width: f32,
1136 scroll_width: f32,
1137 max_glyph_width: f32,
1138 layouts: &[text_layout::Line],
1139 cx: &mut ViewContext<Self>,
1140 ) -> bool {
1141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1142 let selections = self.local_selections::<Point>(cx);
1143
1144 let mut target_left;
1145 let mut target_right;
1146
1147 if self.highlighted_rows.is_some() {
1148 target_left = 0.0_f32;
1149 target_right = 0.0_f32;
1150 } else {
1151 target_left = std::f32::INFINITY;
1152 target_right = 0.0_f32;
1153 for selection in selections {
1154 let head = selection.head().to_display_point(&display_map);
1155 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1156 let start_column = head.column().saturating_sub(3);
1157 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1158 target_left = target_left.min(
1159 layouts[(head.row() - start_row) as usize]
1160 .x_for_index(start_column as usize),
1161 );
1162 target_right = target_right.max(
1163 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1164 + max_glyph_width,
1165 );
1166 }
1167 }
1168 }
1169
1170 target_right = target_right.min(scroll_width);
1171
1172 if target_right - target_left > viewport_width {
1173 return false;
1174 }
1175
1176 let scroll_left = self.scroll_position.x() * max_glyph_width;
1177 let scroll_right = scroll_left + viewport_width;
1178
1179 if target_left < scroll_left {
1180 self.scroll_position.set_x(target_left / max_glyph_width);
1181 true
1182 } else if target_right > scroll_right {
1183 self.scroll_position
1184 .set_x((target_right - viewport_width) / max_glyph_width);
1185 true
1186 } else {
1187 false
1188 }
1189 }
1190
1191 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1192 self.hide_context_menu(cx);
1193
1194 match phase {
1195 SelectPhase::Begin {
1196 position,
1197 add,
1198 click_count,
1199 } => self.begin_selection(*position, *add, *click_count, cx),
1200 SelectPhase::BeginColumnar {
1201 position,
1202 overshoot,
1203 } => self.begin_columnar_selection(*position, *overshoot, cx),
1204 SelectPhase::Extend {
1205 position,
1206 click_count,
1207 } => self.extend_selection(*position, *click_count, cx),
1208 SelectPhase::Update {
1209 position,
1210 overshoot,
1211 scroll_position,
1212 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1213 SelectPhase::End => self.end_selection(cx),
1214 }
1215 }
1216
1217 fn extend_selection(
1218 &mut self,
1219 position: DisplayPoint,
1220 click_count: usize,
1221 cx: &mut ViewContext<Self>,
1222 ) {
1223 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1224 let tail = self
1225 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1226 .tail();
1227 self.begin_selection(position, false, click_count, cx);
1228
1229 let position = position.to_offset(&display_map, Bias::Left);
1230 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1231 let mut pending = self.pending_selection.clone().unwrap();
1232
1233 if position >= tail {
1234 pending.selection.start = tail_anchor.clone();
1235 } else {
1236 pending.selection.end = tail_anchor.clone();
1237 pending.selection.reversed = true;
1238 }
1239
1240 match &mut pending.mode {
1241 SelectMode::Word(range) | SelectMode::Line(range) => {
1242 *range = tail_anchor.clone()..tail_anchor
1243 }
1244 _ => {}
1245 }
1246
1247 self.set_selections(self.selections.clone(), Some(pending), cx);
1248 }
1249
1250 fn begin_selection(
1251 &mut self,
1252 position: DisplayPoint,
1253 add: bool,
1254 click_count: usize,
1255 cx: &mut ViewContext<Self>,
1256 ) {
1257 if !self.focused {
1258 cx.focus_self();
1259 cx.emit(Event::Activate);
1260 }
1261
1262 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1263 let buffer = &display_map.buffer_snapshot;
1264 let newest_selection = self.newest_anchor_selection().clone();
1265
1266 let start;
1267 let end;
1268 let mode;
1269 match click_count {
1270 1 => {
1271 start = buffer.anchor_before(position.to_point(&display_map));
1272 end = start.clone();
1273 mode = SelectMode::Character;
1274 }
1275 2 => {
1276 let range = movement::surrounding_word(&display_map, position);
1277 start = buffer.anchor_before(range.start.to_point(&display_map));
1278 end = buffer.anchor_before(range.end.to_point(&display_map));
1279 mode = SelectMode::Word(start.clone()..end.clone());
1280 }
1281 3 => {
1282 let position = display_map
1283 .clip_point(position, Bias::Left)
1284 .to_point(&display_map);
1285 let line_start = display_map.prev_line_boundary(position).0;
1286 let next_line_start = buffer.clip_point(
1287 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1288 Bias::Left,
1289 );
1290 start = buffer.anchor_before(line_start);
1291 end = buffer.anchor_before(next_line_start);
1292 mode = SelectMode::Line(start.clone()..end.clone());
1293 }
1294 _ => {
1295 start = buffer.anchor_before(0);
1296 end = buffer.anchor_before(buffer.len());
1297 mode = SelectMode::All;
1298 }
1299 }
1300
1301 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1302
1303 let selection = Selection {
1304 id: post_inc(&mut self.next_selection_id),
1305 start,
1306 end,
1307 reversed: false,
1308 goal: SelectionGoal::None,
1309 };
1310
1311 let mut selections;
1312 if add {
1313 selections = self.selections.clone();
1314 // Remove the newest selection if it was added due to a previous mouse up
1315 // within this multi-click.
1316 if click_count > 1 {
1317 selections = self
1318 .selections
1319 .iter()
1320 .filter(|selection| selection.id != newest_selection.id)
1321 .cloned()
1322 .collect();
1323 }
1324 } else {
1325 selections = Arc::from([]);
1326 }
1327 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1328
1329 cx.notify();
1330 }
1331
1332 fn begin_columnar_selection(
1333 &mut self,
1334 position: DisplayPoint,
1335 overshoot: u32,
1336 cx: &mut ViewContext<Self>,
1337 ) {
1338 if !self.focused {
1339 cx.focus_self();
1340 cx.emit(Event::Activate);
1341 }
1342
1343 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1344 let tail = self
1345 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1346 .tail();
1347 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1348
1349 self.select_columns(
1350 tail.to_display_point(&display_map),
1351 position,
1352 overshoot,
1353 &display_map,
1354 cx,
1355 );
1356 }
1357
1358 fn update_selection(
1359 &mut self,
1360 position: DisplayPoint,
1361 overshoot: u32,
1362 scroll_position: Vector2F,
1363 cx: &mut ViewContext<Self>,
1364 ) {
1365 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1366
1367 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1368 let tail = tail.to_display_point(&display_map);
1369 self.select_columns(tail, position, overshoot, &display_map, cx);
1370 } else if let Some(mut pending) = self.pending_selection.clone() {
1371 let buffer = self.buffer.read(cx).snapshot(cx);
1372 let head;
1373 let tail;
1374 match &pending.mode {
1375 SelectMode::Character => {
1376 head = position.to_point(&display_map);
1377 tail = pending.selection.tail().to_point(&buffer);
1378 }
1379 SelectMode::Word(original_range) => {
1380 let original_display_range = original_range.start.to_display_point(&display_map)
1381 ..original_range.end.to_display_point(&display_map);
1382 let original_buffer_range = original_display_range.start.to_point(&display_map)
1383 ..original_display_range.end.to_point(&display_map);
1384 if movement::is_inside_word(&display_map, position)
1385 || original_display_range.contains(&position)
1386 {
1387 let word_range = movement::surrounding_word(&display_map, position);
1388 if word_range.start < original_display_range.start {
1389 head = word_range.start.to_point(&display_map);
1390 } else {
1391 head = word_range.end.to_point(&display_map);
1392 }
1393 } else {
1394 head = position.to_point(&display_map);
1395 }
1396
1397 if head <= original_buffer_range.start {
1398 tail = original_buffer_range.end;
1399 } else {
1400 tail = original_buffer_range.start;
1401 }
1402 }
1403 SelectMode::Line(original_range) => {
1404 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1405
1406 let position = display_map
1407 .clip_point(position, Bias::Left)
1408 .to_point(&display_map);
1409 let line_start = display_map.prev_line_boundary(position).0;
1410 let next_line_start = buffer.clip_point(
1411 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1412 Bias::Left,
1413 );
1414
1415 if line_start < original_range.start {
1416 head = line_start
1417 } else {
1418 head = next_line_start
1419 }
1420
1421 if head <= original_range.start {
1422 tail = original_range.end;
1423 } else {
1424 tail = original_range.start;
1425 }
1426 }
1427 SelectMode::All => {
1428 return;
1429 }
1430 };
1431
1432 if head < tail {
1433 pending.selection.start = buffer.anchor_before(head);
1434 pending.selection.end = buffer.anchor_before(tail);
1435 pending.selection.reversed = true;
1436 } else {
1437 pending.selection.start = buffer.anchor_before(tail);
1438 pending.selection.end = buffer.anchor_before(head);
1439 pending.selection.reversed = false;
1440 }
1441 self.set_selections(self.selections.clone(), Some(pending), cx);
1442 } else {
1443 log::error!("update_selection dispatched with no pending selection");
1444 return;
1445 }
1446
1447 self.set_scroll_position(scroll_position, cx);
1448 cx.notify();
1449 }
1450
1451 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1452 self.columnar_selection_tail.take();
1453 if self.pending_selection.is_some() {
1454 let selections = self.local_selections::<usize>(cx);
1455 self.update_selections(selections, None, cx);
1456 }
1457 }
1458
1459 fn select_columns(
1460 &mut self,
1461 tail: DisplayPoint,
1462 head: DisplayPoint,
1463 overshoot: u32,
1464 display_map: &DisplaySnapshot,
1465 cx: &mut ViewContext<Self>,
1466 ) {
1467 let start_row = cmp::min(tail.row(), head.row());
1468 let end_row = cmp::max(tail.row(), head.row());
1469 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1470 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1471 let reversed = start_column < tail.column();
1472
1473 let selections = (start_row..=end_row)
1474 .filter_map(|row| {
1475 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1476 let start = display_map
1477 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1478 .to_point(&display_map);
1479 let end = display_map
1480 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1481 .to_point(&display_map);
1482 Some(Selection {
1483 id: post_inc(&mut self.next_selection_id),
1484 start,
1485 end,
1486 reversed,
1487 goal: SelectionGoal::None,
1488 })
1489 } else {
1490 None
1491 }
1492 })
1493 .collect::<Vec<_>>();
1494
1495 self.update_selections(selections, None, cx);
1496 cx.notify();
1497 }
1498
1499 pub fn is_selecting(&self) -> bool {
1500 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1501 }
1502
1503 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1504 if self.take_rename(cx).is_some() {
1505 return;
1506 }
1507
1508 if self.hide_context_menu(cx).is_some() {
1509 return;
1510 }
1511
1512 if self.snippet_stack.pop().is_some() {
1513 return;
1514 }
1515
1516 if self.mode != EditorMode::Full {
1517 cx.propagate_action();
1518 return;
1519 }
1520
1521 if self.active_diagnostics.is_some() {
1522 self.dismiss_diagnostics(cx);
1523 } else if let Some(pending) = self.pending_selection.clone() {
1524 let mut selections = self.selections.clone();
1525 if selections.is_empty() {
1526 selections = Arc::from([pending.selection]);
1527 }
1528 self.set_selections(selections, None, cx);
1529 self.request_autoscroll(Autoscroll::Fit, cx);
1530 } else {
1531 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1532 if self.selection_count() == 1 {
1533 if oldest_selection.is_empty() {
1534 cx.propagate_action();
1535 return;
1536 }
1537
1538 oldest_selection.start = oldest_selection.head().clone();
1539 oldest_selection.end = oldest_selection.head().clone();
1540 }
1541 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1542 }
1543 }
1544
1545 #[cfg(any(test, feature = "test-support"))]
1546 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1547 &self,
1548 cx: &mut MutableAppContext,
1549 ) -> Vec<Range<D>> {
1550 self.local_selections::<D>(cx)
1551 .iter()
1552 .map(|s| {
1553 if s.reversed {
1554 s.end.clone()..s.start.clone()
1555 } else {
1556 s.start.clone()..s.end.clone()
1557 }
1558 })
1559 .collect()
1560 }
1561
1562 #[cfg(any(test, feature = "test-support"))]
1563 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1564 let display_map = self
1565 .display_map
1566 .update(cx, |display_map, cx| display_map.snapshot(cx));
1567 self.selections
1568 .iter()
1569 .chain(
1570 self.pending_selection
1571 .as_ref()
1572 .map(|pending| &pending.selection),
1573 )
1574 .map(|s| {
1575 if s.reversed {
1576 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1577 } else {
1578 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1579 }
1580 })
1581 .collect()
1582 }
1583
1584 pub fn select_ranges<I, T>(
1585 &mut self,
1586 ranges: I,
1587 autoscroll: Option<Autoscroll>,
1588 cx: &mut ViewContext<Self>,
1589 ) where
1590 I: IntoIterator<Item = Range<T>>,
1591 T: ToOffset,
1592 {
1593 let buffer = self.buffer.read(cx).snapshot(cx);
1594 let selections = ranges
1595 .into_iter()
1596 .map(|range| {
1597 let mut start = range.start.to_offset(&buffer);
1598 let mut end = range.end.to_offset(&buffer);
1599 let reversed = if start > end {
1600 mem::swap(&mut start, &mut end);
1601 true
1602 } else {
1603 false
1604 };
1605 Selection {
1606 id: post_inc(&mut self.next_selection_id),
1607 start,
1608 end,
1609 reversed,
1610 goal: SelectionGoal::None,
1611 }
1612 })
1613 .collect::<Vec<_>>();
1614 self.update_selections(selections, autoscroll, cx);
1615 }
1616
1617 #[cfg(any(test, feature = "test-support"))]
1618 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1619 where
1620 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1621 {
1622 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1623 let selections = ranges
1624 .into_iter()
1625 .map(|range| {
1626 let mut start = range.start;
1627 let mut end = range.end;
1628 let reversed = if start > end {
1629 mem::swap(&mut start, &mut end);
1630 true
1631 } else {
1632 false
1633 };
1634 Selection {
1635 id: post_inc(&mut self.next_selection_id),
1636 start: start.to_point(&display_map),
1637 end: end.to_point(&display_map),
1638 reversed,
1639 goal: SelectionGoal::None,
1640 }
1641 })
1642 .collect();
1643 self.update_selections(selections, None, cx);
1644 }
1645
1646 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1647 let text = action.0.as_ref();
1648 if !self.skip_autoclose_end(text, cx) {
1649 self.start_transaction(cx);
1650 if !self.surround_with_bracket_pair(text, cx) {
1651 self.insert(text, cx);
1652 self.autoclose_bracket_pairs(cx);
1653 }
1654 self.end_transaction(cx);
1655 self.trigger_completion_on_input(text, cx);
1656 }
1657 }
1658
1659 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1660 self.start_transaction(cx);
1661 let mut old_selections = SmallVec::<[_; 32]>::new();
1662 {
1663 let selections = self.local_selections::<usize>(cx);
1664 let buffer = self.buffer.read(cx).snapshot(cx);
1665 for selection in selections.iter() {
1666 let start_point = selection.start.to_point(&buffer);
1667 let indent = buffer
1668 .indent_column_for_line(start_point.row)
1669 .min(start_point.column);
1670 let start = selection.start;
1671 let end = selection.end;
1672
1673 let mut insert_extra_newline = false;
1674 if let Some(language) = buffer.language() {
1675 let leading_whitespace_len = buffer
1676 .reversed_chars_at(start)
1677 .take_while(|c| c.is_whitespace() && *c != '\n')
1678 .map(|c| c.len_utf8())
1679 .sum::<usize>();
1680
1681 let trailing_whitespace_len = buffer
1682 .chars_at(end)
1683 .take_while(|c| c.is_whitespace() && *c != '\n')
1684 .map(|c| c.len_utf8())
1685 .sum::<usize>();
1686
1687 insert_extra_newline = language.brackets().iter().any(|pair| {
1688 let pair_start = pair.start.trim_end();
1689 let pair_end = pair.end.trim_start();
1690
1691 pair.newline
1692 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1693 && buffer.contains_str_at(
1694 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1695 pair_start,
1696 )
1697 });
1698 }
1699
1700 old_selections.push((
1701 selection.id,
1702 buffer.anchor_after(end),
1703 start..end,
1704 indent,
1705 insert_extra_newline,
1706 ));
1707 }
1708 }
1709
1710 self.buffer.update(cx, |buffer, cx| {
1711 let mut delta = 0_isize;
1712 let mut pending_edit: Option<PendingEdit> = None;
1713 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1714 if pending_edit.as_ref().map_or(false, |pending| {
1715 pending.indent != *indent
1716 || pending.insert_extra_newline != *insert_extra_newline
1717 }) {
1718 let pending = pending_edit.take().unwrap();
1719 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1720 new_text.push('\n');
1721 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1722 if pending.insert_extra_newline {
1723 new_text = new_text.repeat(2);
1724 }
1725 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1726 delta += pending.delta;
1727 }
1728
1729 let start = (range.start as isize + delta) as usize;
1730 let end = (range.end as isize + delta) as usize;
1731 let mut text_len = *indent as usize + 1;
1732 if *insert_extra_newline {
1733 text_len *= 2;
1734 }
1735
1736 let pending = pending_edit.get_or_insert_with(Default::default);
1737 pending.delta += text_len as isize - (end - start) as isize;
1738 pending.indent = *indent;
1739 pending.insert_extra_newline = *insert_extra_newline;
1740 pending.ranges.push(start..end);
1741 }
1742
1743 let pending = pending_edit.unwrap();
1744 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1745 new_text.push('\n');
1746 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1747 if pending.insert_extra_newline {
1748 new_text = new_text.repeat(2);
1749 }
1750 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1751
1752 let buffer = buffer.read(cx);
1753 self.selections = self
1754 .selections
1755 .iter()
1756 .cloned()
1757 .zip(old_selections)
1758 .map(
1759 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1760 let mut cursor = end_anchor.to_point(&buffer);
1761 if insert_extra_newline {
1762 cursor.row -= 1;
1763 cursor.column = buffer.line_len(cursor.row);
1764 }
1765 let anchor = buffer.anchor_after(cursor);
1766 new_selection.start = anchor.clone();
1767 new_selection.end = anchor;
1768 new_selection
1769 },
1770 )
1771 .collect();
1772 });
1773
1774 self.request_autoscroll(Autoscroll::Fit, cx);
1775 self.end_transaction(cx);
1776
1777 #[derive(Default)]
1778 struct PendingEdit {
1779 indent: u32,
1780 insert_extra_newline: bool,
1781 delta: isize,
1782 ranges: SmallVec<[Range<usize>; 32]>,
1783 }
1784 }
1785
1786 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1787 self.start_transaction(cx);
1788
1789 let old_selections = self.local_selections::<usize>(cx);
1790 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1791 let anchors = {
1792 let snapshot = buffer.read(cx);
1793 old_selections
1794 .iter()
1795 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1796 .collect::<Vec<_>>()
1797 };
1798 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1799 buffer.edit_with_autoindent(edit_ranges, text, cx);
1800 anchors
1801 });
1802
1803 let selections = {
1804 let snapshot = self.buffer.read(cx).read(cx);
1805 selection_anchors
1806 .into_iter()
1807 .map(|(id, goal, position)| {
1808 let position = position.to_offset(&snapshot);
1809 Selection {
1810 id,
1811 start: position,
1812 end: position,
1813 goal,
1814 reversed: false,
1815 }
1816 })
1817 .collect()
1818 };
1819 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1820 self.end_transaction(cx);
1821 }
1822
1823 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1824 let selection = self.newest_anchor_selection();
1825 if self
1826 .buffer
1827 .read(cx)
1828 .is_completion_trigger(selection.head(), text, cx)
1829 {
1830 self.show_completions(&ShowCompletions, cx);
1831 } else {
1832 self.hide_context_menu(cx);
1833 }
1834 }
1835
1836 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1837 let snapshot = self.buffer.read(cx).snapshot(cx);
1838 if let Some(pair) = snapshot
1839 .language()
1840 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1841 .cloned()
1842 {
1843 if self
1844 .local_selections::<usize>(cx)
1845 .iter()
1846 .any(|selection| selection.is_empty())
1847 {
1848 false
1849 } else {
1850 let mut selections = self.selections.to_vec();
1851 for selection in &mut selections {
1852 selection.end = selection.end.bias_left(&snapshot);
1853 }
1854 drop(snapshot);
1855
1856 self.buffer.update(cx, |buffer, cx| {
1857 buffer.edit(
1858 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1859 &pair.start,
1860 cx,
1861 );
1862 buffer.edit(
1863 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1864 &pair.end,
1865 cx,
1866 );
1867 });
1868
1869 let snapshot = self.buffer.read(cx).read(cx);
1870 for selection in &mut selections {
1871 selection.end = selection.end.bias_right(&snapshot);
1872 }
1873 drop(snapshot);
1874
1875 self.set_selections(selections.into(), None, cx);
1876 true
1877 }
1878 } else {
1879 false
1880 }
1881 }
1882
1883 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1884 let selections = self.local_selections::<usize>(cx);
1885 let mut bracket_pair_state = None;
1886 let mut new_selections = None;
1887 self.buffer.update(cx, |buffer, cx| {
1888 let mut snapshot = buffer.snapshot(cx);
1889 let left_biased_selections = selections
1890 .iter()
1891 .map(|selection| Selection {
1892 id: selection.id,
1893 start: snapshot.anchor_before(selection.start),
1894 end: snapshot.anchor_before(selection.end),
1895 reversed: selection.reversed,
1896 goal: selection.goal,
1897 })
1898 .collect::<Vec<_>>();
1899
1900 let autoclose_pair = snapshot.language().and_then(|language| {
1901 let first_selection_start = selections.first().unwrap().start;
1902 let pair = language.brackets().iter().find(|pair| {
1903 snapshot.contains_str_at(
1904 first_selection_start.saturating_sub(pair.start.len()),
1905 &pair.start,
1906 )
1907 });
1908 pair.and_then(|pair| {
1909 let should_autoclose = selections.iter().all(|selection| {
1910 // Ensure all selections are parked at the end of a pair start.
1911 if snapshot.contains_str_at(
1912 selection.start.saturating_sub(pair.start.len()),
1913 &pair.start,
1914 ) {
1915 // Autoclose only if the next character is a whitespace or a pair end
1916 // (possibly a different one from the pair we are inserting).
1917 snapshot
1918 .chars_at(selection.start)
1919 .next()
1920 .map_or(true, |ch| ch.is_whitespace())
1921 || language.brackets().iter().any(|pair| {
1922 snapshot.contains_str_at(selection.start, &pair.end)
1923 })
1924 } else {
1925 false
1926 }
1927 });
1928
1929 if should_autoclose {
1930 Some(pair.clone())
1931 } else {
1932 None
1933 }
1934 })
1935 });
1936
1937 if let Some(pair) = autoclose_pair {
1938 let selection_ranges = selections
1939 .iter()
1940 .map(|selection| {
1941 let start = selection.start.to_offset(&snapshot);
1942 start..start
1943 })
1944 .collect::<SmallVec<[_; 32]>>();
1945
1946 buffer.edit(selection_ranges, &pair.end, cx);
1947 snapshot = buffer.snapshot(cx);
1948
1949 new_selections = Some(
1950 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1951 .collect::<Vec<_>>(),
1952 );
1953
1954 if pair.end.len() == 1 {
1955 let mut delta = 0;
1956 bracket_pair_state = Some(BracketPairState {
1957 ranges: selections
1958 .iter()
1959 .map(move |selection| {
1960 let offset = selection.start + delta;
1961 delta += 1;
1962 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1963 })
1964 .collect(),
1965 pair,
1966 });
1967 }
1968 }
1969 });
1970
1971 if let Some(new_selections) = new_selections {
1972 self.update_selections(new_selections, None, cx);
1973 }
1974 if let Some(bracket_pair_state) = bracket_pair_state {
1975 self.autoclose_stack.push(bracket_pair_state);
1976 }
1977 }
1978
1979 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1980 let old_selections = self.local_selections::<usize>(cx);
1981 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1982 autoclose_pair
1983 } else {
1984 return false;
1985 };
1986 if text != autoclose_pair.pair.end {
1987 return false;
1988 }
1989
1990 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1991
1992 let buffer = self.buffer.read(cx).snapshot(cx);
1993 if old_selections
1994 .iter()
1995 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1996 .all(|(selection, autoclose_range)| {
1997 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1998 selection.is_empty() && selection.start == autoclose_range_end
1999 })
2000 {
2001 let new_selections = old_selections
2002 .into_iter()
2003 .map(|selection| {
2004 let cursor = selection.start + 1;
2005 Selection {
2006 id: selection.id,
2007 start: cursor,
2008 end: cursor,
2009 reversed: false,
2010 goal: SelectionGoal::None,
2011 }
2012 })
2013 .collect();
2014 self.autoclose_stack.pop();
2015 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2016 true
2017 } else {
2018 false
2019 }
2020 }
2021
2022 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2023 let offset = position.to_offset(buffer);
2024 let (word_range, kind) = buffer.surrounding_word(offset);
2025 if offset > word_range.start && kind == Some(CharKind::Word) {
2026 Some(
2027 buffer
2028 .text_for_range(word_range.start..offset)
2029 .collect::<String>(),
2030 )
2031 } else {
2032 None
2033 }
2034 }
2035
2036 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2037 if self.pending_rename.is_some() {
2038 return;
2039 }
2040
2041 let project = if let Some(project) = self.project.clone() {
2042 project
2043 } else {
2044 return;
2045 };
2046
2047 let position = self.newest_anchor_selection().head();
2048 let (buffer, buffer_position) = if let Some(output) = self
2049 .buffer
2050 .read(cx)
2051 .text_anchor_for_position(position.clone(), cx)
2052 {
2053 output
2054 } else {
2055 return;
2056 };
2057
2058 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2059 let completions = project.update(cx, |project, cx| {
2060 project.completions(&buffer, buffer_position.clone(), cx)
2061 });
2062
2063 let id = post_inc(&mut self.next_completion_id);
2064 let task = cx.spawn_weak(|this, mut cx| {
2065 async move {
2066 let completions = completions.await?;
2067 if completions.is_empty() {
2068 return Ok(());
2069 }
2070
2071 let mut menu = CompletionsMenu {
2072 id,
2073 initial_position: position,
2074 match_candidates: completions
2075 .iter()
2076 .enumerate()
2077 .map(|(id, completion)| {
2078 StringMatchCandidate::new(
2079 id,
2080 completion.label.text[completion.label.filter_range.clone()].into(),
2081 )
2082 })
2083 .collect(),
2084 buffer,
2085 completions: completions.into(),
2086 matches: Vec::new().into(),
2087 selected_item: 0,
2088 list: Default::default(),
2089 };
2090
2091 menu.filter(query.as_deref(), cx.background()).await;
2092
2093 if let Some(this) = this.upgrade(&cx) {
2094 this.update(&mut cx, |this, cx| {
2095 match this.context_menu.as_ref() {
2096 None => {}
2097 Some(ContextMenu::Completions(prev_menu)) => {
2098 if prev_menu.id > menu.id {
2099 return;
2100 }
2101 }
2102 _ => return,
2103 }
2104
2105 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2106 if this.focused {
2107 this.show_context_menu(ContextMenu::Completions(menu), cx);
2108 }
2109
2110 cx.notify();
2111 });
2112 }
2113 Ok::<_, anyhow::Error>(())
2114 }
2115 .log_err()
2116 });
2117 self.completion_tasks.push((id, task));
2118 }
2119
2120 pub fn confirm_completion(
2121 &mut self,
2122 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2123 cx: &mut ViewContext<Self>,
2124 ) -> Option<Task<Result<()>>> {
2125 use language::ToOffset as _;
2126
2127 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2128 menu
2129 } else {
2130 return None;
2131 };
2132
2133 let mat = completions_menu
2134 .matches
2135 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2136 let buffer_handle = completions_menu.buffer;
2137 let completion = completions_menu.completions.get(mat.candidate_id)?;
2138
2139 let snippet;
2140 let text;
2141 if completion.is_snippet() {
2142 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2143 text = snippet.as_ref().unwrap().text.clone();
2144 } else {
2145 snippet = None;
2146 text = completion.new_text.clone();
2147 };
2148 let buffer = buffer_handle.read(cx);
2149 let old_range = completion.old_range.to_offset(&buffer);
2150 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2151
2152 let selections = self.local_selections::<usize>(cx);
2153 let newest_selection = self.newest_anchor_selection();
2154 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2155 return None;
2156 }
2157
2158 let lookbehind = newest_selection
2159 .start
2160 .text_anchor
2161 .to_offset(buffer)
2162 .saturating_sub(old_range.start);
2163 let lookahead = old_range
2164 .end
2165 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2166 let mut common_prefix_len = old_text
2167 .bytes()
2168 .zip(text.bytes())
2169 .take_while(|(a, b)| a == b)
2170 .count();
2171
2172 let snapshot = self.buffer.read(cx).snapshot(cx);
2173 let mut ranges = Vec::new();
2174 for selection in &selections {
2175 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2176 let start = selection.start.saturating_sub(lookbehind);
2177 let end = selection.end + lookahead;
2178 ranges.push(start + common_prefix_len..end);
2179 } else {
2180 common_prefix_len = 0;
2181 ranges.clear();
2182 ranges.extend(selections.iter().map(|s| {
2183 if s.id == newest_selection.id {
2184 old_range.clone()
2185 } else {
2186 s.start..s.end
2187 }
2188 }));
2189 break;
2190 }
2191 }
2192 let text = &text[common_prefix_len..];
2193
2194 self.start_transaction(cx);
2195 if let Some(mut snippet) = snippet {
2196 snippet.text = text.to_string();
2197 for tabstop in snippet.tabstops.iter_mut().flatten() {
2198 tabstop.start -= common_prefix_len as isize;
2199 tabstop.end -= common_prefix_len as isize;
2200 }
2201
2202 self.insert_snippet(&ranges, snippet, cx).log_err();
2203 } else {
2204 self.buffer.update(cx, |buffer, cx| {
2205 buffer.edit_with_autoindent(ranges, text, cx);
2206 });
2207 }
2208 self.end_transaction(cx);
2209
2210 let project = self.project.clone()?;
2211 let apply_edits = project.update(cx, |project, cx| {
2212 project.apply_additional_edits_for_completion(
2213 buffer_handle,
2214 completion.clone(),
2215 true,
2216 cx,
2217 )
2218 });
2219 Some(cx.foreground().spawn(async move {
2220 apply_edits.await?;
2221 Ok(())
2222 }))
2223 }
2224
2225 pub fn toggle_code_actions(
2226 &mut self,
2227 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2228 cx: &mut ViewContext<Self>,
2229 ) {
2230 if matches!(
2231 self.context_menu.as_ref(),
2232 Some(ContextMenu::CodeActions(_))
2233 ) {
2234 self.context_menu.take();
2235 cx.notify();
2236 return;
2237 }
2238
2239 let mut task = self.code_actions_task.take();
2240 cx.spawn_weak(|this, mut cx| async move {
2241 while let Some(prev_task) = task {
2242 prev_task.await;
2243 task = this
2244 .upgrade(&cx)
2245 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2246 }
2247
2248 if let Some(this) = this.upgrade(&cx) {
2249 this.update(&mut cx, |this, cx| {
2250 if this.focused {
2251 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2252 this.show_context_menu(
2253 ContextMenu::CodeActions(CodeActionsMenu {
2254 buffer,
2255 actions,
2256 selected_item: Default::default(),
2257 list: Default::default(),
2258 deployed_from_indicator,
2259 }),
2260 cx,
2261 );
2262 }
2263 }
2264 })
2265 }
2266 Ok::<_, anyhow::Error>(())
2267 })
2268 .detach_and_log_err(cx);
2269 }
2270
2271 pub fn confirm_code_action(
2272 workspace: &mut Workspace,
2273 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2274 cx: &mut ViewContext<Workspace>,
2275 ) -> Option<Task<Result<()>>> {
2276 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2277 let actions_menu = if let ContextMenu::CodeActions(menu) =
2278 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2279 {
2280 menu
2281 } else {
2282 return None;
2283 };
2284 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2285 let action = actions_menu.actions.get(action_ix)?.clone();
2286 let title = action.lsp_action.title.clone();
2287 let buffer = actions_menu.buffer;
2288
2289 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2290 project.apply_code_action(buffer, action, true, cx)
2291 });
2292 Some(cx.spawn(|workspace, cx| async move {
2293 let project_transaction = apply_code_actions.await?;
2294 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2295 }))
2296 }
2297
2298 async fn open_project_transaction(
2299 this: ViewHandle<Editor>,
2300 workspace: ViewHandle<Workspace>,
2301 transaction: ProjectTransaction,
2302 title: String,
2303 mut cx: AsyncAppContext,
2304 ) -> Result<()> {
2305 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2306
2307 // If the code action's edits are all contained within this editor, then
2308 // avoid opening a new editor to display them.
2309 let mut entries = transaction.0.iter();
2310 if let Some((buffer, transaction)) = entries.next() {
2311 if entries.next().is_none() {
2312 let excerpt = this.read_with(&cx, |editor, cx| {
2313 editor
2314 .buffer()
2315 .read(cx)
2316 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2317 });
2318 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2319 if excerpted_buffer == *buffer {
2320 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2321 let excerpt_range = excerpt_range.to_offset(&snapshot);
2322 if snapshot
2323 .edited_ranges_for_transaction(transaction)
2324 .all(|range| {
2325 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2326 })
2327 {
2328 return Ok(());
2329 }
2330 }
2331 }
2332 }
2333 }
2334
2335 let mut ranges_to_highlight = Vec::new();
2336 let excerpt_buffer = cx.add_model(|cx| {
2337 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2338 for (buffer, transaction) in &transaction.0 {
2339 let snapshot = buffer.read(cx).snapshot();
2340 ranges_to_highlight.extend(
2341 multibuffer.push_excerpts_with_context_lines(
2342 buffer.clone(),
2343 snapshot
2344 .edited_ranges_for_transaction::<usize>(transaction)
2345 .collect(),
2346 1,
2347 cx,
2348 ),
2349 );
2350 }
2351 multibuffer.push_transaction(&transaction.0);
2352 multibuffer
2353 });
2354
2355 workspace.update(&mut cx, |workspace, cx| {
2356 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2357 if let Some(editor) = editor.act_as::<Self>(cx) {
2358 editor.update(cx, |editor, cx| {
2359 let color = editor.style(cx).highlighted_line_background;
2360 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2361 });
2362 }
2363 });
2364
2365 Ok(())
2366 }
2367
2368 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2369 let project = self.project.as_ref()?;
2370 let buffer = self.buffer.read(cx);
2371 let newest_selection = self.newest_anchor_selection().clone();
2372 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2373 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2374 if start_buffer != end_buffer {
2375 return None;
2376 }
2377
2378 let actions = project.update(cx, |project, cx| {
2379 project.code_actions(&start_buffer, start..end, cx)
2380 });
2381 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2382 let actions = actions.await;
2383 if let Some(this) = this.upgrade(&cx) {
2384 this.update(&mut cx, |this, cx| {
2385 this.available_code_actions = actions.log_err().and_then(|actions| {
2386 if actions.is_empty() {
2387 None
2388 } else {
2389 Some((start_buffer, actions.into()))
2390 }
2391 });
2392 cx.notify();
2393 })
2394 }
2395 }));
2396 None
2397 }
2398
2399 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2400 let project = self.project.as_ref()?;
2401 let buffer = self.buffer.read(cx);
2402 let newest_selection = self.newest_anchor_selection().clone();
2403 let cursor_position = newest_selection.head();
2404 let (cursor_buffer, cursor_buffer_position) =
2405 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2406 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2407 if cursor_buffer != tail_buffer {
2408 return None;
2409 }
2410
2411 let highlights = project.update(cx, |project, cx| {
2412 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2413 });
2414
2415 enum DocumentHighlightRead {}
2416 enum DocumentHighlightWrite {}
2417
2418 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2419 let highlights = highlights.log_err().await;
2420 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2421 this.update(&mut cx, |this, cx| {
2422 let buffer_id = cursor_position.buffer_id;
2423 let excerpt_id = cursor_position.excerpt_id.clone();
2424 let style = this.style(cx);
2425 let read_background = style.document_highlight_read_background;
2426 let write_background = style.document_highlight_write_background;
2427 let buffer = this.buffer.read(cx);
2428 if !buffer
2429 .text_anchor_for_position(cursor_position, cx)
2430 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2431 {
2432 return;
2433 }
2434
2435 let mut write_ranges = Vec::new();
2436 let mut read_ranges = Vec::new();
2437 for highlight in highlights {
2438 let range = Anchor {
2439 buffer_id,
2440 excerpt_id: excerpt_id.clone(),
2441 text_anchor: highlight.range.start,
2442 }..Anchor {
2443 buffer_id,
2444 excerpt_id: excerpt_id.clone(),
2445 text_anchor: highlight.range.end,
2446 };
2447 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2448 write_ranges.push(range);
2449 } else {
2450 read_ranges.push(range);
2451 }
2452 }
2453
2454 this.highlight_ranges::<DocumentHighlightRead>(
2455 read_ranges,
2456 read_background,
2457 cx,
2458 );
2459 this.highlight_ranges::<DocumentHighlightWrite>(
2460 write_ranges,
2461 write_background,
2462 cx,
2463 );
2464 cx.notify();
2465 });
2466 }
2467 }));
2468 None
2469 }
2470
2471 pub fn render_code_actions_indicator(
2472 &self,
2473 style: &EditorStyle,
2474 cx: &mut ViewContext<Self>,
2475 ) -> Option<ElementBox> {
2476 if self.available_code_actions.is_some() {
2477 enum Tag {}
2478 Some(
2479 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2480 Svg::new("icons/zap.svg")
2481 .with_color(style.code_actions_indicator)
2482 .boxed()
2483 })
2484 .with_cursor_style(CursorStyle::PointingHand)
2485 .with_padding(Padding::uniform(3.))
2486 .on_mouse_down(|cx| {
2487 cx.dispatch_action(ToggleCodeActions(true));
2488 })
2489 .boxed(),
2490 )
2491 } else {
2492 None
2493 }
2494 }
2495
2496 pub fn context_menu_visible(&self) -> bool {
2497 self.context_menu
2498 .as_ref()
2499 .map_or(false, |menu| menu.visible())
2500 }
2501
2502 pub fn render_context_menu(
2503 &self,
2504 cursor_position: DisplayPoint,
2505 style: EditorStyle,
2506 cx: &AppContext,
2507 ) -> Option<(DisplayPoint, ElementBox)> {
2508 self.context_menu
2509 .as_ref()
2510 .map(|menu| menu.render(cursor_position, style, cx))
2511 }
2512
2513 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2514 if !matches!(menu, ContextMenu::Completions(_)) {
2515 self.completion_tasks.clear();
2516 }
2517 self.context_menu = Some(menu);
2518 cx.notify();
2519 }
2520
2521 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2522 cx.notify();
2523 self.completion_tasks.clear();
2524 self.context_menu.take()
2525 }
2526
2527 pub fn insert_snippet(
2528 &mut self,
2529 insertion_ranges: &[Range<usize>],
2530 snippet: Snippet,
2531 cx: &mut ViewContext<Self>,
2532 ) -> Result<()> {
2533 let tabstops = self.buffer.update(cx, |buffer, cx| {
2534 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2535
2536 let snapshot = &*buffer.read(cx);
2537 let snippet = &snippet;
2538 snippet
2539 .tabstops
2540 .iter()
2541 .map(|tabstop| {
2542 let mut tabstop_ranges = tabstop
2543 .iter()
2544 .flat_map(|tabstop_range| {
2545 let mut delta = 0 as isize;
2546 insertion_ranges.iter().map(move |insertion_range| {
2547 let insertion_start = insertion_range.start as isize + delta;
2548 delta +=
2549 snippet.text.len() as isize - insertion_range.len() as isize;
2550
2551 let start = snapshot.anchor_before(
2552 (insertion_start + tabstop_range.start) as usize,
2553 );
2554 let end = snapshot
2555 .anchor_after((insertion_start + tabstop_range.end) as usize);
2556 start..end
2557 })
2558 })
2559 .collect::<Vec<_>>();
2560 tabstop_ranges
2561 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2562 tabstop_ranges
2563 })
2564 .collect::<Vec<_>>()
2565 });
2566
2567 if let Some(tabstop) = tabstops.first() {
2568 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2569 self.snippet_stack.push(SnippetState {
2570 active_index: 0,
2571 ranges: tabstops,
2572 });
2573 }
2574
2575 Ok(())
2576 }
2577
2578 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2579 self.move_to_snippet_tabstop(Bias::Right, cx)
2580 }
2581
2582 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2583 self.move_to_snippet_tabstop(Bias::Left, cx);
2584 }
2585
2586 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2587 let buffer = self.buffer.read(cx).snapshot(cx);
2588
2589 if let Some(snippet) = self.snippet_stack.last_mut() {
2590 match bias {
2591 Bias::Left => {
2592 if snippet.active_index > 0 {
2593 snippet.active_index -= 1;
2594 } else {
2595 return false;
2596 }
2597 }
2598 Bias::Right => {
2599 if snippet.active_index + 1 < snippet.ranges.len() {
2600 snippet.active_index += 1;
2601 } else {
2602 return false;
2603 }
2604 }
2605 }
2606 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2607 let new_selections = current_ranges
2608 .iter()
2609 .map(|new_range| {
2610 let new_range = new_range.to_offset(&buffer);
2611 Selection {
2612 id: post_inc(&mut self.next_selection_id),
2613 start: new_range.start,
2614 end: new_range.end,
2615 reversed: false,
2616 goal: SelectionGoal::None,
2617 }
2618 })
2619 .collect();
2620
2621 // Remove the snippet state when moving to the last tabstop.
2622 if snippet.active_index + 1 == snippet.ranges.len() {
2623 self.snippet_stack.pop();
2624 }
2625
2626 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2627 return true;
2628 }
2629 self.snippet_stack.pop();
2630 }
2631
2632 false
2633 }
2634
2635 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2636 self.start_transaction(cx);
2637 self.select_all(&SelectAll, cx);
2638 self.insert("", cx);
2639 self.end_transaction(cx);
2640 }
2641
2642 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2643 self.start_transaction(cx);
2644 let mut selections = self.local_selections::<Point>(cx);
2645 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2646 for selection in &mut selections {
2647 if selection.is_empty() {
2648 let old_head = selection.head();
2649 let mut new_head =
2650 movement::left(&display_map, old_head.to_display_point(&display_map))
2651 .unwrap()
2652 .to_point(&display_map);
2653 if let Some((buffer, line_buffer_range)) = display_map
2654 .buffer_snapshot
2655 .buffer_line_for_row(old_head.row)
2656 {
2657 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2658 if old_head.column <= indent_column && old_head.column > 0 {
2659 let indent = buffer.indent_size();
2660 new_head = cmp::min(
2661 new_head,
2662 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2663 );
2664 }
2665 }
2666
2667 selection.set_head(new_head);
2668 selection.goal = SelectionGoal::None;
2669 }
2670 }
2671 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2672 self.insert("", cx);
2673 self.end_transaction(cx);
2674 }
2675
2676 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2677 self.start_transaction(cx);
2678 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2679 let mut selections = self.local_selections::<Point>(cx);
2680 for selection in &mut selections {
2681 if selection.is_empty() {
2682 let head = selection.head().to_display_point(&display_map);
2683 let cursor = movement::right(&display_map, head)
2684 .unwrap()
2685 .to_point(&display_map);
2686 selection.set_head(cursor);
2687 selection.goal = SelectionGoal::None;
2688 }
2689 }
2690 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2691 self.insert(&"", cx);
2692 self.end_transaction(cx);
2693 }
2694
2695 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2696 if self.move_to_next_snippet_tabstop(cx) {
2697 return;
2698 }
2699
2700 self.start_transaction(cx);
2701 let tab_size = self.settings.borrow().tab_size;
2702 let mut selections = self.local_selections::<Point>(cx);
2703 let mut last_indent = None;
2704 self.buffer.update(cx, |buffer, cx| {
2705 for selection in &mut selections {
2706 if selection.is_empty() {
2707 let char_column = buffer
2708 .read(cx)
2709 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2710 .flat_map(str::chars)
2711 .count();
2712 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2713 buffer.edit(
2714 [selection.start..selection.start],
2715 " ".repeat(chars_to_next_tab_stop),
2716 cx,
2717 );
2718 selection.start.column += chars_to_next_tab_stop as u32;
2719 selection.end = selection.start;
2720 } else {
2721 let mut start_row = selection.start.row;
2722 let mut end_row = selection.end.row + 1;
2723
2724 // If a selection ends at the beginning of a line, don't indent
2725 // that last line.
2726 if selection.end.column == 0 {
2727 end_row -= 1;
2728 }
2729
2730 // Avoid re-indenting a row that has already been indented by a
2731 // previous selection, but still update this selection's column
2732 // to reflect that indentation.
2733 if let Some((last_indent_row, last_indent_len)) = last_indent {
2734 if last_indent_row == selection.start.row {
2735 selection.start.column += last_indent_len;
2736 start_row += 1;
2737 }
2738 if last_indent_row == selection.end.row {
2739 selection.end.column += last_indent_len;
2740 }
2741 }
2742
2743 for row in start_row..end_row {
2744 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2745 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2746 let row_start = Point::new(row, 0);
2747 buffer.edit(
2748 [row_start..row_start],
2749 " ".repeat(columns_to_next_tab_stop),
2750 cx,
2751 );
2752
2753 // Update this selection's endpoints to reflect the indentation.
2754 if row == selection.start.row {
2755 selection.start.column += columns_to_next_tab_stop as u32;
2756 }
2757 if row == selection.end.row {
2758 selection.end.column += columns_to_next_tab_stop as u32;
2759 }
2760
2761 last_indent = Some((row, columns_to_next_tab_stop as u32));
2762 }
2763 }
2764 }
2765 });
2766
2767 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2768 self.end_transaction(cx);
2769 }
2770
2771 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2772 if !self.snippet_stack.is_empty() {
2773 self.move_to_prev_snippet_tabstop(cx);
2774 return;
2775 }
2776
2777 self.start_transaction(cx);
2778 let tab_size = self.settings.borrow().tab_size;
2779 let selections = self.local_selections::<Point>(cx);
2780 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2781 let mut deletion_ranges = Vec::new();
2782 let mut last_outdent = None;
2783 {
2784 let buffer = self.buffer.read(cx).read(cx);
2785 for selection in &selections {
2786 let mut rows = selection.spanned_rows(false, &display_map);
2787
2788 // Avoid re-outdenting a row that has already been outdented by a
2789 // previous selection.
2790 if let Some(last_row) = last_outdent {
2791 if last_row == rows.start {
2792 rows.start += 1;
2793 }
2794 }
2795
2796 for row in rows {
2797 let column = buffer.indent_column_for_line(row) as usize;
2798 if column > 0 {
2799 let mut deletion_len = (column % tab_size) as u32;
2800 if deletion_len == 0 {
2801 deletion_len = tab_size as u32;
2802 }
2803 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2804 last_outdent = Some(row);
2805 }
2806 }
2807 }
2808 }
2809 self.buffer.update(cx, |buffer, cx| {
2810 buffer.edit(deletion_ranges, "", cx);
2811 });
2812
2813 self.update_selections(
2814 self.local_selections::<usize>(cx),
2815 Some(Autoscroll::Fit),
2816 cx,
2817 );
2818 self.end_transaction(cx);
2819 }
2820
2821 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2822 self.start_transaction(cx);
2823
2824 let selections = self.local_selections::<Point>(cx);
2825 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2826 let buffer = self.buffer.read(cx).snapshot(cx);
2827
2828 let mut new_cursors = Vec::new();
2829 let mut edit_ranges = Vec::new();
2830 let mut selections = selections.iter().peekable();
2831 while let Some(selection) = selections.next() {
2832 let mut rows = selection.spanned_rows(false, &display_map);
2833 let goal_display_column = selection.head().to_display_point(&display_map).column();
2834
2835 // Accumulate contiguous regions of rows that we want to delete.
2836 while let Some(next_selection) = selections.peek() {
2837 let next_rows = next_selection.spanned_rows(false, &display_map);
2838 if next_rows.start <= rows.end {
2839 rows.end = next_rows.end;
2840 selections.next().unwrap();
2841 } else {
2842 break;
2843 }
2844 }
2845
2846 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2847 let edit_end;
2848 let cursor_buffer_row;
2849 if buffer.max_point().row >= rows.end {
2850 // If there's a line after the range, delete the \n from the end of the row range
2851 // and position the cursor on the next line.
2852 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2853 cursor_buffer_row = rows.end;
2854 } else {
2855 // If there isn't a line after the range, delete the \n from the line before the
2856 // start of the row range and position the cursor there.
2857 edit_start = edit_start.saturating_sub(1);
2858 edit_end = buffer.len();
2859 cursor_buffer_row = rows.start.saturating_sub(1);
2860 }
2861
2862 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2863 *cursor.column_mut() =
2864 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2865
2866 new_cursors.push((
2867 selection.id,
2868 buffer.anchor_after(cursor.to_point(&display_map)),
2869 ));
2870 edit_ranges.push(edit_start..edit_end);
2871 }
2872
2873 let buffer = self.buffer.update(cx, |buffer, cx| {
2874 buffer.edit(edit_ranges, "", cx);
2875 buffer.snapshot(cx)
2876 });
2877 let new_selections = new_cursors
2878 .into_iter()
2879 .map(|(id, cursor)| {
2880 let cursor = cursor.to_point(&buffer);
2881 Selection {
2882 id,
2883 start: cursor,
2884 end: cursor,
2885 reversed: false,
2886 goal: SelectionGoal::None,
2887 }
2888 })
2889 .collect();
2890 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2891 self.end_transaction(cx);
2892 }
2893
2894 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2895 self.start_transaction(cx);
2896
2897 let selections = self.local_selections::<Point>(cx);
2898 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2899 let buffer = &display_map.buffer_snapshot;
2900
2901 let mut edits = Vec::new();
2902 let mut selections_iter = selections.iter().peekable();
2903 while let Some(selection) = selections_iter.next() {
2904 // Avoid duplicating the same lines twice.
2905 let mut rows = selection.spanned_rows(false, &display_map);
2906
2907 while let Some(next_selection) = selections_iter.peek() {
2908 let next_rows = next_selection.spanned_rows(false, &display_map);
2909 if next_rows.start <= rows.end - 1 {
2910 rows.end = next_rows.end;
2911 selections_iter.next().unwrap();
2912 } else {
2913 break;
2914 }
2915 }
2916
2917 // Copy the text from the selected row region and splice it at the start of the region.
2918 let start = Point::new(rows.start, 0);
2919 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2920 let text = buffer
2921 .text_for_range(start..end)
2922 .chain(Some("\n"))
2923 .collect::<String>();
2924 edits.push((start, text, rows.len() as u32));
2925 }
2926
2927 self.buffer.update(cx, |buffer, cx| {
2928 for (point, text, _) in edits.into_iter().rev() {
2929 buffer.edit(Some(point..point), text, cx);
2930 }
2931 });
2932
2933 self.request_autoscroll(Autoscroll::Fit, cx);
2934 self.end_transaction(cx);
2935 }
2936
2937 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2938 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2939 let buffer = self.buffer.read(cx).snapshot(cx);
2940
2941 let mut edits = Vec::new();
2942 let mut unfold_ranges = Vec::new();
2943 let mut refold_ranges = Vec::new();
2944
2945 let selections = self.local_selections::<Point>(cx);
2946 let mut selections = selections.iter().peekable();
2947 let mut contiguous_row_selections = Vec::new();
2948 let mut new_selections = Vec::new();
2949
2950 while let Some(selection) = selections.next() {
2951 // Find all the selections that span a contiguous row range
2952 contiguous_row_selections.push(selection.clone());
2953 let start_row = selection.start.row;
2954 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2955 display_map.next_line_boundary(selection.end).0.row + 1
2956 } else {
2957 selection.end.row
2958 };
2959
2960 while let Some(next_selection) = selections.peek() {
2961 if next_selection.start.row <= end_row {
2962 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2963 display_map.next_line_boundary(next_selection.end).0.row + 1
2964 } else {
2965 next_selection.end.row
2966 };
2967 contiguous_row_selections.push(selections.next().unwrap().clone());
2968 } else {
2969 break;
2970 }
2971 }
2972
2973 // Move the text spanned by the row range to be before the line preceding the row range
2974 if start_row > 0 {
2975 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2976 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2977 let insertion_point = display_map
2978 .prev_line_boundary(Point::new(start_row - 1, 0))
2979 .0;
2980
2981 // Don't move lines across excerpts
2982 if buffer
2983 .excerpt_boundaries_in_range((
2984 Bound::Excluded(insertion_point),
2985 Bound::Included(range_to_move.end),
2986 ))
2987 .next()
2988 .is_none()
2989 {
2990 let text = buffer
2991 .text_for_range(range_to_move.clone())
2992 .flat_map(|s| s.chars())
2993 .skip(1)
2994 .chain(['\n'])
2995 .collect::<String>();
2996
2997 edits.push((
2998 buffer.anchor_after(range_to_move.start)
2999 ..buffer.anchor_before(range_to_move.end),
3000 String::new(),
3001 ));
3002 let insertion_anchor = buffer.anchor_after(insertion_point);
3003 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3004
3005 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3006
3007 // Move selections up
3008 new_selections.extend(contiguous_row_selections.drain(..).map(
3009 |mut selection| {
3010 selection.start.row -= row_delta;
3011 selection.end.row -= row_delta;
3012 selection
3013 },
3014 ));
3015
3016 // Move folds up
3017 unfold_ranges.push(range_to_move.clone());
3018 for fold in display_map.folds_in_range(
3019 buffer.anchor_before(range_to_move.start)
3020 ..buffer.anchor_after(range_to_move.end),
3021 ) {
3022 let mut start = fold.start.to_point(&buffer);
3023 let mut end = fold.end.to_point(&buffer);
3024 start.row -= row_delta;
3025 end.row -= row_delta;
3026 refold_ranges.push(start..end);
3027 }
3028 }
3029 }
3030
3031 // If we didn't move line(s), preserve the existing selections
3032 new_selections.extend(contiguous_row_selections.drain(..));
3033 }
3034
3035 self.start_transaction(cx);
3036 self.unfold_ranges(unfold_ranges, cx);
3037 self.buffer.update(cx, |buffer, cx| {
3038 for (range, text) in edits {
3039 buffer.edit([range], text, cx);
3040 }
3041 });
3042 self.fold_ranges(refold_ranges, cx);
3043 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3044 self.end_transaction(cx);
3045 }
3046
3047 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3048 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3049 let buffer = self.buffer.read(cx).snapshot(cx);
3050
3051 let mut edits = Vec::new();
3052 let mut unfold_ranges = Vec::new();
3053 let mut refold_ranges = Vec::new();
3054
3055 let selections = self.local_selections::<Point>(cx);
3056 let mut selections = selections.iter().peekable();
3057 let mut contiguous_row_selections = Vec::new();
3058 let mut new_selections = Vec::new();
3059
3060 while let Some(selection) = selections.next() {
3061 // Find all the selections that span a contiguous row range
3062 contiguous_row_selections.push(selection.clone());
3063 let start_row = selection.start.row;
3064 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3065 display_map.next_line_boundary(selection.end).0.row + 1
3066 } else {
3067 selection.end.row
3068 };
3069
3070 while let Some(next_selection) = selections.peek() {
3071 if next_selection.start.row <= end_row {
3072 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3073 display_map.next_line_boundary(next_selection.end).0.row + 1
3074 } else {
3075 next_selection.end.row
3076 };
3077 contiguous_row_selections.push(selections.next().unwrap().clone());
3078 } else {
3079 break;
3080 }
3081 }
3082
3083 // Move the text spanned by the row range to be after the last line of the row range
3084 if end_row <= buffer.max_point().row {
3085 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3086 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3087
3088 // Don't move lines across excerpt boundaries
3089 if buffer
3090 .excerpt_boundaries_in_range((
3091 Bound::Excluded(range_to_move.start),
3092 Bound::Included(insertion_point),
3093 ))
3094 .next()
3095 .is_none()
3096 {
3097 let mut text = String::from("\n");
3098 text.extend(buffer.text_for_range(range_to_move.clone()));
3099 text.pop(); // Drop trailing newline
3100 edits.push((
3101 buffer.anchor_after(range_to_move.start)
3102 ..buffer.anchor_before(range_to_move.end),
3103 String::new(),
3104 ));
3105 let insertion_anchor = buffer.anchor_after(insertion_point);
3106 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3107
3108 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3109
3110 // Move selections down
3111 new_selections.extend(contiguous_row_selections.drain(..).map(
3112 |mut selection| {
3113 selection.start.row += row_delta;
3114 selection.end.row += row_delta;
3115 selection
3116 },
3117 ));
3118
3119 // Move folds down
3120 unfold_ranges.push(range_to_move.clone());
3121 for fold in display_map.folds_in_range(
3122 buffer.anchor_before(range_to_move.start)
3123 ..buffer.anchor_after(range_to_move.end),
3124 ) {
3125 let mut start = fold.start.to_point(&buffer);
3126 let mut end = fold.end.to_point(&buffer);
3127 start.row += row_delta;
3128 end.row += row_delta;
3129 refold_ranges.push(start..end);
3130 }
3131 }
3132 }
3133
3134 // If we didn't move line(s), preserve the existing selections
3135 new_selections.extend(contiguous_row_selections.drain(..));
3136 }
3137
3138 self.start_transaction(cx);
3139 self.unfold_ranges(unfold_ranges, cx);
3140 self.buffer.update(cx, |buffer, cx| {
3141 for (range, text) in edits {
3142 buffer.edit([range], text, cx);
3143 }
3144 });
3145 self.fold_ranges(refold_ranges, cx);
3146 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3147 self.end_transaction(cx);
3148 }
3149
3150 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3151 self.start_transaction(cx);
3152 let mut text = String::new();
3153 let mut selections = self.local_selections::<Point>(cx);
3154 let mut clipboard_selections = Vec::with_capacity(selections.len());
3155 {
3156 let buffer = self.buffer.read(cx).read(cx);
3157 let max_point = buffer.max_point();
3158 for selection in &mut selections {
3159 let is_entire_line = selection.is_empty();
3160 if is_entire_line {
3161 selection.start = Point::new(selection.start.row, 0);
3162 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3163 selection.goal = SelectionGoal::None;
3164 }
3165 let mut len = 0;
3166 for chunk in buffer.text_for_range(selection.start..selection.end) {
3167 text.push_str(chunk);
3168 len += chunk.len();
3169 }
3170 clipboard_selections.push(ClipboardSelection {
3171 len,
3172 is_entire_line,
3173 });
3174 }
3175 }
3176 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3177 self.insert("", cx);
3178 self.end_transaction(cx);
3179
3180 cx.as_mut()
3181 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3182 }
3183
3184 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3185 let selections = self.local_selections::<Point>(cx);
3186 let mut text = String::new();
3187 let mut clipboard_selections = Vec::with_capacity(selections.len());
3188 {
3189 let buffer = self.buffer.read(cx).read(cx);
3190 let max_point = buffer.max_point();
3191 for selection in selections.iter() {
3192 let mut start = selection.start;
3193 let mut end = selection.end;
3194 let is_entire_line = selection.is_empty();
3195 if is_entire_line {
3196 start = Point::new(start.row, 0);
3197 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3198 }
3199 let mut len = 0;
3200 for chunk in buffer.text_for_range(start..end) {
3201 text.push_str(chunk);
3202 len += chunk.len();
3203 }
3204 clipboard_selections.push(ClipboardSelection {
3205 len,
3206 is_entire_line,
3207 });
3208 }
3209 }
3210
3211 cx.as_mut()
3212 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3213 }
3214
3215 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3216 if let Some(item) = cx.as_mut().read_from_clipboard() {
3217 let clipboard_text = item.text();
3218 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3219 let mut selections = self.local_selections::<usize>(cx);
3220 let all_selections_were_entire_line =
3221 clipboard_selections.iter().all(|s| s.is_entire_line);
3222 if clipboard_selections.len() != selections.len() {
3223 clipboard_selections.clear();
3224 }
3225
3226 let mut delta = 0_isize;
3227 let mut start_offset = 0;
3228 for (i, selection) in selections.iter_mut().enumerate() {
3229 let to_insert;
3230 let entire_line;
3231 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3232 let end_offset = start_offset + clipboard_selection.len;
3233 to_insert = &clipboard_text[start_offset..end_offset];
3234 entire_line = clipboard_selection.is_entire_line;
3235 start_offset = end_offset
3236 } else {
3237 to_insert = clipboard_text.as_str();
3238 entire_line = all_selections_were_entire_line;
3239 }
3240
3241 selection.start = (selection.start as isize + delta) as usize;
3242 selection.end = (selection.end as isize + delta) as usize;
3243
3244 self.buffer.update(cx, |buffer, cx| {
3245 // If the corresponding selection was empty when this slice of the
3246 // clipboard text was written, then the entire line containing the
3247 // selection was copied. If this selection is also currently empty,
3248 // then paste the line before the current line of the buffer.
3249 let range = if selection.is_empty() && entire_line {
3250 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3251 let line_start = selection.start - column;
3252 line_start..line_start
3253 } else {
3254 selection.start..selection.end
3255 };
3256
3257 delta += to_insert.len() as isize - range.len() as isize;
3258 buffer.edit([range], to_insert, cx);
3259 selection.start += to_insert.len();
3260 selection.end = selection.start;
3261 });
3262 }
3263 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3264 } else {
3265 self.insert(clipboard_text, cx);
3266 }
3267 }
3268 }
3269
3270 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3271 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3272 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3273 self.set_selections(selections, None, cx);
3274 }
3275 self.request_autoscroll(Autoscroll::Fit, cx);
3276 }
3277 }
3278
3279 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3280 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3281 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3282 self.set_selections(selections, None, cx);
3283 }
3284 self.request_autoscroll(Autoscroll::Fit, cx);
3285 }
3286 }
3287
3288 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3289 self.buffer
3290 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3291 }
3292
3293 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3294 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3295 let mut selections = self.local_selections::<Point>(cx);
3296 for selection in &mut selections {
3297 let start = selection.start.to_display_point(&display_map);
3298 let end = selection.end.to_display_point(&display_map);
3299
3300 if start != end {
3301 selection.end = selection.start.clone();
3302 } else {
3303 let cursor = movement::left(&display_map, start)
3304 .unwrap()
3305 .to_point(&display_map);
3306 selection.start = cursor.clone();
3307 selection.end = cursor;
3308 }
3309 selection.reversed = false;
3310 selection.goal = SelectionGoal::None;
3311 }
3312 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3313 }
3314
3315 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3316 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3317 let mut selections = self.local_selections::<Point>(cx);
3318 for selection in &mut selections {
3319 let head = selection.head().to_display_point(&display_map);
3320 let cursor = movement::left(&display_map, head)
3321 .unwrap()
3322 .to_point(&display_map);
3323 selection.set_head(cursor);
3324 selection.goal = SelectionGoal::None;
3325 }
3326 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3327 }
3328
3329 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3330 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3331 let mut selections = self.local_selections::<Point>(cx);
3332 for selection in &mut selections {
3333 let start = selection.start.to_display_point(&display_map);
3334 let end = selection.end.to_display_point(&display_map);
3335
3336 if start != end {
3337 selection.start = selection.end.clone();
3338 } else {
3339 let cursor = movement::right(&display_map, end)
3340 .unwrap()
3341 .to_point(&display_map);
3342 selection.start = cursor;
3343 selection.end = cursor;
3344 }
3345 selection.reversed = false;
3346 selection.goal = SelectionGoal::None;
3347 }
3348 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3349 }
3350
3351 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3353 let mut selections = self.local_selections::<Point>(cx);
3354 for selection in &mut selections {
3355 let head = selection.head().to_display_point(&display_map);
3356 let cursor = movement::right(&display_map, head)
3357 .unwrap()
3358 .to_point(&display_map);
3359 selection.set_head(cursor);
3360 selection.goal = SelectionGoal::None;
3361 }
3362 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3363 }
3364
3365 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3366 if self.take_rename(cx).is_some() {
3367 return;
3368 }
3369
3370 if let Some(context_menu) = self.context_menu.as_mut() {
3371 if context_menu.select_prev(cx) {
3372 return;
3373 }
3374 }
3375
3376 if matches!(self.mode, EditorMode::SingleLine) {
3377 cx.propagate_action();
3378 return;
3379 }
3380
3381 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3382 let mut selections = self.local_selections::<Point>(cx);
3383 for selection in &mut selections {
3384 let start = selection.start.to_display_point(&display_map);
3385 let end = selection.end.to_display_point(&display_map);
3386 if start != end {
3387 selection.goal = SelectionGoal::None;
3388 }
3389
3390 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3391 let cursor = start.to_point(&display_map);
3392 selection.start = cursor;
3393 selection.end = cursor;
3394 selection.goal = goal;
3395 selection.reversed = false;
3396 }
3397 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3398 }
3399
3400 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3401 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3402 let mut selections = self.local_selections::<Point>(cx);
3403 for selection in &mut selections {
3404 let head = selection.head().to_display_point(&display_map);
3405 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3406 let cursor = head.to_point(&display_map);
3407 selection.set_head(cursor);
3408 selection.goal = goal;
3409 }
3410 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3411 }
3412
3413 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3414 self.take_rename(cx);
3415
3416 if let Some(context_menu) = self.context_menu.as_mut() {
3417 if context_menu.select_next(cx) {
3418 return;
3419 }
3420 }
3421
3422 if matches!(self.mode, EditorMode::SingleLine) {
3423 cx.propagate_action();
3424 return;
3425 }
3426
3427 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3428 let mut selections = self.local_selections::<Point>(cx);
3429 for selection in &mut selections {
3430 let start = selection.start.to_display_point(&display_map);
3431 let end = selection.end.to_display_point(&display_map);
3432 if start != end {
3433 selection.goal = SelectionGoal::None;
3434 }
3435
3436 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3437 let cursor = start.to_point(&display_map);
3438 selection.start = cursor;
3439 selection.end = cursor;
3440 selection.goal = goal;
3441 selection.reversed = false;
3442 }
3443 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3444 }
3445
3446 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3447 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3448 let mut selections = self.local_selections::<Point>(cx);
3449 for selection in &mut selections {
3450 let head = selection.head().to_display_point(&display_map);
3451 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3452 let cursor = head.to_point(&display_map);
3453 selection.set_head(cursor);
3454 selection.goal = goal;
3455 }
3456 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3457 }
3458
3459 pub fn move_to_previous_word_boundary(
3460 &mut self,
3461 _: &MoveToPreviousWordBoundary,
3462 cx: &mut ViewContext<Self>,
3463 ) {
3464 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3465 let mut selections = self.local_selections::<Point>(cx);
3466 for selection in &mut selections {
3467 let head = selection.head().to_display_point(&display_map);
3468 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3469 selection.start = cursor.clone();
3470 selection.end = cursor;
3471 selection.reversed = false;
3472 selection.goal = SelectionGoal::None;
3473 }
3474 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3475 }
3476
3477 pub fn select_to_previous_word_boundary(
3478 &mut self,
3479 _: &SelectToPreviousWordBoundary,
3480 cx: &mut ViewContext<Self>,
3481 ) {
3482 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3483 let mut selections = self.local_selections::<Point>(cx);
3484 for selection in &mut selections {
3485 let head = selection.head().to_display_point(&display_map);
3486 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3487 selection.set_head(cursor);
3488 selection.goal = SelectionGoal::None;
3489 }
3490 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3491 }
3492
3493 pub fn delete_to_previous_word_boundary(
3494 &mut self,
3495 _: &DeleteToPreviousWordBoundary,
3496 cx: &mut ViewContext<Self>,
3497 ) {
3498 self.start_transaction(cx);
3499 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3500 let mut selections = self.local_selections::<Point>(cx);
3501 for selection in &mut selections {
3502 if selection.is_empty() {
3503 let head = selection.head().to_display_point(&display_map);
3504 let cursor =
3505 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3506 selection.set_head(cursor);
3507 selection.goal = SelectionGoal::None;
3508 }
3509 }
3510 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3511 self.insert("", cx);
3512 self.end_transaction(cx);
3513 }
3514
3515 pub fn move_to_next_word_boundary(
3516 &mut self,
3517 _: &MoveToNextWordBoundary,
3518 cx: &mut ViewContext<Self>,
3519 ) {
3520 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3521 let mut selections = self.local_selections::<Point>(cx);
3522 for selection in &mut selections {
3523 let head = selection.head().to_display_point(&display_map);
3524 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3525 selection.start = cursor;
3526 selection.end = cursor;
3527 selection.reversed = false;
3528 selection.goal = SelectionGoal::None;
3529 }
3530 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3531 }
3532
3533 pub fn select_to_next_word_boundary(
3534 &mut self,
3535 _: &SelectToNextWordBoundary,
3536 cx: &mut ViewContext<Self>,
3537 ) {
3538 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3539 let mut selections = self.local_selections::<Point>(cx);
3540 for selection in &mut selections {
3541 let head = selection.head().to_display_point(&display_map);
3542 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3543 selection.set_head(cursor);
3544 selection.goal = SelectionGoal::None;
3545 }
3546 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3547 }
3548
3549 pub fn delete_to_next_word_boundary(
3550 &mut self,
3551 _: &DeleteToNextWordBoundary,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 self.start_transaction(cx);
3555 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3556 let mut selections = self.local_selections::<Point>(cx);
3557 for selection in &mut selections {
3558 if selection.is_empty() {
3559 let head = selection.head().to_display_point(&display_map);
3560 let cursor =
3561 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3562 selection.set_head(cursor);
3563 selection.goal = SelectionGoal::None;
3564 }
3565 }
3566 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3567 self.insert("", cx);
3568 self.end_transaction(cx);
3569 }
3570
3571 pub fn move_to_beginning_of_line(
3572 &mut self,
3573 _: &MoveToBeginningOfLine,
3574 cx: &mut ViewContext<Self>,
3575 ) {
3576 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3577 let mut selections = self.local_selections::<Point>(cx);
3578 for selection in &mut selections {
3579 let head = selection.head().to_display_point(&display_map);
3580 let new_head = movement::line_beginning(&display_map, head, true);
3581 let cursor = new_head.to_point(&display_map);
3582 selection.start = cursor;
3583 selection.end = cursor;
3584 selection.reversed = false;
3585 selection.goal = SelectionGoal::None;
3586 }
3587 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3588 }
3589
3590 pub fn select_to_beginning_of_line(
3591 &mut self,
3592 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3593 cx: &mut ViewContext<Self>,
3594 ) {
3595 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3596 let mut selections = self.local_selections::<Point>(cx);
3597 for selection in &mut selections {
3598 let head = selection.head().to_display_point(&display_map);
3599 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3600 selection.set_head(new_head.to_point(&display_map));
3601 selection.goal = SelectionGoal::None;
3602 }
3603 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3604 }
3605
3606 pub fn delete_to_beginning_of_line(
3607 &mut self,
3608 _: &DeleteToBeginningOfLine,
3609 cx: &mut ViewContext<Self>,
3610 ) {
3611 self.start_transaction(cx);
3612 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3613 self.backspace(&Backspace, cx);
3614 self.end_transaction(cx);
3615 }
3616
3617 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3618 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3619 let mut selections = self.local_selections::<Point>(cx);
3620 {
3621 for selection in &mut selections {
3622 let head = selection.head().to_display_point(&display_map);
3623 let new_head = movement::line_end(&display_map, head, true);
3624 let anchor = new_head.to_point(&display_map);
3625 selection.start = anchor.clone();
3626 selection.end = anchor;
3627 selection.reversed = false;
3628 selection.goal = SelectionGoal::None;
3629 }
3630 }
3631 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3632 }
3633
3634 pub fn select_to_end_of_line(
3635 &mut self,
3636 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3637 cx: &mut ViewContext<Self>,
3638 ) {
3639 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3640 let mut selections = self.local_selections::<Point>(cx);
3641 for selection in &mut selections {
3642 let head = selection.head().to_display_point(&display_map);
3643 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3644 selection.set_head(new_head.to_point(&display_map));
3645 selection.goal = SelectionGoal::None;
3646 }
3647 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3648 }
3649
3650 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3651 self.start_transaction(cx);
3652 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3653 self.delete(&Delete, cx);
3654 self.end_transaction(cx);
3655 }
3656
3657 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3658 self.start_transaction(cx);
3659 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3660 self.cut(&Cut, cx);
3661 self.end_transaction(cx);
3662 }
3663
3664 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3665 if matches!(self.mode, EditorMode::SingleLine) {
3666 cx.propagate_action();
3667 return;
3668 }
3669
3670 let selection = Selection {
3671 id: post_inc(&mut self.next_selection_id),
3672 start: 0,
3673 end: 0,
3674 reversed: false,
3675 goal: SelectionGoal::None,
3676 };
3677 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3678 }
3679
3680 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3681 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3682 selection.set_head(Point::zero());
3683 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3684 }
3685
3686 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3687 if matches!(self.mode, EditorMode::SingleLine) {
3688 cx.propagate_action();
3689 return;
3690 }
3691
3692 let cursor = self.buffer.read(cx).read(cx).len();
3693 let selection = Selection {
3694 id: post_inc(&mut self.next_selection_id),
3695 start: cursor,
3696 end: cursor,
3697 reversed: false,
3698 goal: SelectionGoal::None,
3699 };
3700 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3701 }
3702
3703 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3704 self.nav_history = nav_history;
3705 }
3706
3707 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3708 self.nav_history.as_ref()
3709 }
3710
3711 fn push_to_nav_history(
3712 &self,
3713 position: Anchor,
3714 new_position: Option<Point>,
3715 cx: &mut ViewContext<Self>,
3716 ) {
3717 if let Some(nav_history) = &self.nav_history {
3718 let buffer = self.buffer.read(cx).read(cx);
3719 let offset = position.to_offset(&buffer);
3720 let point = position.to_point(&buffer);
3721 drop(buffer);
3722
3723 if let Some(new_position) = new_position {
3724 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3725 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3726 return;
3727 }
3728 }
3729
3730 nav_history.push(Some(NavigationData {
3731 anchor: position,
3732 offset,
3733 }));
3734 }
3735 }
3736
3737 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3738 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3739 selection.set_head(self.buffer.read(cx).read(cx).len());
3740 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3741 }
3742
3743 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3744 let selection = Selection {
3745 id: post_inc(&mut self.next_selection_id),
3746 start: 0,
3747 end: self.buffer.read(cx).read(cx).len(),
3748 reversed: false,
3749 goal: SelectionGoal::None,
3750 };
3751 self.update_selections(vec![selection], None, cx);
3752 }
3753
3754 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3755 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3756 let mut selections = self.local_selections::<Point>(cx);
3757 let max_point = display_map.buffer_snapshot.max_point();
3758 for selection in &mut selections {
3759 let rows = selection.spanned_rows(true, &display_map);
3760 selection.start = Point::new(rows.start, 0);
3761 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3762 selection.reversed = false;
3763 }
3764 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3765 }
3766
3767 pub fn split_selection_into_lines(
3768 &mut self,
3769 _: &SplitSelectionIntoLines,
3770 cx: &mut ViewContext<Self>,
3771 ) {
3772 let mut to_unfold = Vec::new();
3773 let mut new_selections = Vec::new();
3774 {
3775 let selections = self.local_selections::<Point>(cx);
3776 let buffer = self.buffer.read(cx).read(cx);
3777 for selection in selections {
3778 for row in selection.start.row..selection.end.row {
3779 let cursor = Point::new(row, buffer.line_len(row));
3780 new_selections.push(Selection {
3781 id: post_inc(&mut self.next_selection_id),
3782 start: cursor,
3783 end: cursor,
3784 reversed: false,
3785 goal: SelectionGoal::None,
3786 });
3787 }
3788 new_selections.push(Selection {
3789 id: selection.id,
3790 start: selection.end,
3791 end: selection.end,
3792 reversed: false,
3793 goal: SelectionGoal::None,
3794 });
3795 to_unfold.push(selection.start..selection.end);
3796 }
3797 }
3798 self.unfold_ranges(to_unfold, cx);
3799 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3800 }
3801
3802 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3803 self.add_selection(true, cx);
3804 }
3805
3806 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3807 self.add_selection(false, cx);
3808 }
3809
3810 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3811 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3812 let mut selections = self.local_selections::<Point>(cx);
3813 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3814 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3815 let range = oldest_selection.display_range(&display_map).sorted();
3816 let columns = cmp::min(range.start.column(), range.end.column())
3817 ..cmp::max(range.start.column(), range.end.column());
3818
3819 selections.clear();
3820 let mut stack = Vec::new();
3821 for row in range.start.row()..=range.end.row() {
3822 if let Some(selection) = self.build_columnar_selection(
3823 &display_map,
3824 row,
3825 &columns,
3826 oldest_selection.reversed,
3827 ) {
3828 stack.push(selection.id);
3829 selections.push(selection);
3830 }
3831 }
3832
3833 if above {
3834 stack.reverse();
3835 }
3836
3837 AddSelectionsState { above, stack }
3838 });
3839
3840 let last_added_selection = *state.stack.last().unwrap();
3841 let mut new_selections = Vec::new();
3842 if above == state.above {
3843 let end_row = if above {
3844 0
3845 } else {
3846 display_map.max_point().row()
3847 };
3848
3849 'outer: for selection in selections {
3850 if selection.id == last_added_selection {
3851 let range = selection.display_range(&display_map).sorted();
3852 debug_assert_eq!(range.start.row(), range.end.row());
3853 let mut row = range.start.row();
3854 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3855 {
3856 start..end
3857 } else {
3858 cmp::min(range.start.column(), range.end.column())
3859 ..cmp::max(range.start.column(), range.end.column())
3860 };
3861
3862 while row != end_row {
3863 if above {
3864 row -= 1;
3865 } else {
3866 row += 1;
3867 }
3868
3869 if let Some(new_selection) = self.build_columnar_selection(
3870 &display_map,
3871 row,
3872 &columns,
3873 selection.reversed,
3874 ) {
3875 state.stack.push(new_selection.id);
3876 if above {
3877 new_selections.push(new_selection);
3878 new_selections.push(selection);
3879 } else {
3880 new_selections.push(selection);
3881 new_selections.push(new_selection);
3882 }
3883
3884 continue 'outer;
3885 }
3886 }
3887 }
3888
3889 new_selections.push(selection);
3890 }
3891 } else {
3892 new_selections = selections;
3893 new_selections.retain(|s| s.id != last_added_selection);
3894 state.stack.pop();
3895 }
3896
3897 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3898 if state.stack.len() > 1 {
3899 self.add_selections_state = Some(state);
3900 }
3901 }
3902
3903 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3904 let replace_newest = action.0;
3905 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3906 let buffer = &display_map.buffer_snapshot;
3907 let mut selections = self.local_selections::<usize>(cx);
3908 if let Some(mut select_next_state) = self.select_next_state.take() {
3909 let query = &select_next_state.query;
3910 if !select_next_state.done {
3911 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3912 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3913 let mut next_selected_range = None;
3914
3915 let bytes_after_last_selection =
3916 buffer.bytes_in_range(last_selection.end..buffer.len());
3917 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3918 let query_matches = query
3919 .stream_find_iter(bytes_after_last_selection)
3920 .map(|result| (last_selection.end, result))
3921 .chain(
3922 query
3923 .stream_find_iter(bytes_before_first_selection)
3924 .map(|result| (0, result)),
3925 );
3926 for (start_offset, query_match) in query_matches {
3927 let query_match = query_match.unwrap(); // can only fail due to I/O
3928 let offset_range =
3929 start_offset + query_match.start()..start_offset + query_match.end();
3930 let display_range = offset_range.start.to_display_point(&display_map)
3931 ..offset_range.end.to_display_point(&display_map);
3932
3933 if !select_next_state.wordwise
3934 || (!movement::is_inside_word(&display_map, display_range.start)
3935 && !movement::is_inside_word(&display_map, display_range.end))
3936 {
3937 next_selected_range = Some(offset_range);
3938 break;
3939 }
3940 }
3941
3942 if let Some(next_selected_range) = next_selected_range {
3943 if replace_newest {
3944 if let Some(newest_id) =
3945 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3946 {
3947 selections.retain(|s| s.id != newest_id);
3948 }
3949 }
3950 selections.push(Selection {
3951 id: post_inc(&mut self.next_selection_id),
3952 start: next_selected_range.start,
3953 end: next_selected_range.end,
3954 reversed: false,
3955 goal: SelectionGoal::None,
3956 });
3957 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3958 } else {
3959 select_next_state.done = true;
3960 }
3961 }
3962
3963 self.select_next_state = Some(select_next_state);
3964 } else if selections.len() == 1 {
3965 let selection = selections.last_mut().unwrap();
3966 if selection.start == selection.end {
3967 let word_range = movement::surrounding_word(
3968 &display_map,
3969 selection.start.to_display_point(&display_map),
3970 );
3971 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3972 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3973 selection.goal = SelectionGoal::None;
3974 selection.reversed = false;
3975
3976 let query = buffer
3977 .text_for_range(selection.start..selection.end)
3978 .collect::<String>();
3979 let select_state = SelectNextState {
3980 query: AhoCorasick::new_auto_configured(&[query]),
3981 wordwise: true,
3982 done: false,
3983 };
3984 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3985 self.select_next_state = Some(select_state);
3986 } else {
3987 let query = buffer
3988 .text_for_range(selection.start..selection.end)
3989 .collect::<String>();
3990 self.select_next_state = Some(SelectNextState {
3991 query: AhoCorasick::new_auto_configured(&[query]),
3992 wordwise: false,
3993 done: false,
3994 });
3995 self.select_next(action, cx);
3996 }
3997 }
3998 }
3999
4000 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4001 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4002 // as that portion won't be used for detecting if a line is a comment.
4003 let full_comment_prefix =
4004 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4005 prefix.to_string()
4006 } else {
4007 return;
4008 };
4009 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4010 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4011
4012 self.start_transaction(cx);
4013 let mut selections = self.local_selections::<Point>(cx);
4014 let mut all_selection_lines_are_comments = true;
4015 let mut edit_ranges = Vec::new();
4016 let mut last_toggled_row = None;
4017 self.buffer.update(cx, |buffer, cx| {
4018 for selection in &mut selections {
4019 edit_ranges.clear();
4020 let snapshot = buffer.snapshot(cx);
4021
4022 let end_row =
4023 if selection.end.row > selection.start.row && selection.end.column == 0 {
4024 selection.end.row
4025 } else {
4026 selection.end.row + 1
4027 };
4028
4029 for row in selection.start.row..end_row {
4030 // If multiple selections contain a given row, avoid processing that
4031 // row more than once.
4032 if last_toggled_row == Some(row) {
4033 continue;
4034 } else {
4035 last_toggled_row = Some(row);
4036 }
4037
4038 if snapshot.is_line_blank(row) {
4039 continue;
4040 }
4041
4042 let start = Point::new(row, snapshot.indent_column_for_line(row));
4043 let mut line_bytes = snapshot
4044 .bytes_in_range(start..snapshot.max_point())
4045 .flatten()
4046 .copied();
4047
4048 // If this line currently begins with the line comment prefix, then record
4049 // the range containing the prefix.
4050 if all_selection_lines_are_comments
4051 && line_bytes
4052 .by_ref()
4053 .take(comment_prefix.len())
4054 .eq(comment_prefix.bytes())
4055 {
4056 // Include any whitespace that matches the comment prefix.
4057 let matching_whitespace_len = line_bytes
4058 .zip(comment_prefix_whitespace.bytes())
4059 .take_while(|(a, b)| a == b)
4060 .count() as u32;
4061 let end = Point::new(
4062 row,
4063 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4064 );
4065 edit_ranges.push(start..end);
4066 }
4067 // If this line does not begin with the line comment prefix, then record
4068 // the position where the prefix should be inserted.
4069 else {
4070 all_selection_lines_are_comments = false;
4071 edit_ranges.push(start..start);
4072 }
4073 }
4074
4075 if !edit_ranges.is_empty() {
4076 if all_selection_lines_are_comments {
4077 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4078 } else {
4079 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4080 let edit_ranges = edit_ranges.iter().map(|range| {
4081 let position = Point::new(range.start.row, min_column);
4082 position..position
4083 });
4084 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4085 }
4086 }
4087 }
4088 });
4089
4090 self.update_selections(
4091 self.local_selections::<usize>(cx),
4092 Some(Autoscroll::Fit),
4093 cx,
4094 );
4095 self.end_transaction(cx);
4096 }
4097
4098 pub fn select_larger_syntax_node(
4099 &mut self,
4100 _: &SelectLargerSyntaxNode,
4101 cx: &mut ViewContext<Self>,
4102 ) {
4103 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4104 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4105 let buffer = self.buffer.read(cx).snapshot(cx);
4106
4107 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4108 let mut selected_larger_node = false;
4109 let new_selections = old_selections
4110 .iter()
4111 .map(|selection| {
4112 let old_range = selection.start..selection.end;
4113 let mut new_range = old_range.clone();
4114 while let Some(containing_range) =
4115 buffer.range_for_syntax_ancestor(new_range.clone())
4116 {
4117 new_range = containing_range;
4118 if !display_map.intersects_fold(new_range.start)
4119 && !display_map.intersects_fold(new_range.end)
4120 {
4121 break;
4122 }
4123 }
4124
4125 selected_larger_node |= new_range != old_range;
4126 Selection {
4127 id: selection.id,
4128 start: new_range.start,
4129 end: new_range.end,
4130 goal: SelectionGoal::None,
4131 reversed: selection.reversed,
4132 }
4133 })
4134 .collect::<Vec<_>>();
4135
4136 if selected_larger_node {
4137 stack.push(old_selections);
4138 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4139 }
4140 self.select_larger_syntax_node_stack = stack;
4141 }
4142
4143 pub fn select_smaller_syntax_node(
4144 &mut self,
4145 _: &SelectSmallerSyntaxNode,
4146 cx: &mut ViewContext<Self>,
4147 ) {
4148 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4149 if let Some(selections) = stack.pop() {
4150 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4151 }
4152 self.select_larger_syntax_node_stack = stack;
4153 }
4154
4155 pub fn move_to_enclosing_bracket(
4156 &mut self,
4157 _: &MoveToEnclosingBracket,
4158 cx: &mut ViewContext<Self>,
4159 ) {
4160 let mut selections = self.local_selections::<usize>(cx);
4161 let buffer = self.buffer.read(cx).snapshot(cx);
4162 for selection in &mut selections {
4163 if let Some((open_range, close_range)) =
4164 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4165 {
4166 let close_range = close_range.to_inclusive();
4167 let destination = if close_range.contains(&selection.start)
4168 && close_range.contains(&selection.end)
4169 {
4170 open_range.end
4171 } else {
4172 *close_range.start()
4173 };
4174 selection.start = destination;
4175 selection.end = destination;
4176 }
4177 }
4178
4179 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4180 }
4181
4182 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4183 let buffer = self.buffer.read(cx).snapshot(cx);
4184 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4185 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4186 active_diagnostics
4187 .primary_range
4188 .to_offset(&buffer)
4189 .to_inclusive()
4190 });
4191 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4192 if active_primary_range.contains(&selection.head()) {
4193 *active_primary_range.end()
4194 } else {
4195 selection.head()
4196 }
4197 } else {
4198 selection.head()
4199 };
4200
4201 loop {
4202 let next_group = buffer
4203 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4204 .find_map(|entry| {
4205 if entry.diagnostic.is_primary
4206 && !entry.range.is_empty()
4207 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4208 {
4209 Some((entry.range, entry.diagnostic.group_id))
4210 } else {
4211 None
4212 }
4213 });
4214
4215 if let Some((primary_range, group_id)) = next_group {
4216 self.activate_diagnostics(group_id, cx);
4217 self.update_selections(
4218 vec![Selection {
4219 id: selection.id,
4220 start: primary_range.start,
4221 end: primary_range.start,
4222 reversed: false,
4223 goal: SelectionGoal::None,
4224 }],
4225 Some(Autoscroll::Center),
4226 cx,
4227 );
4228 break;
4229 } else if search_start == 0 {
4230 break;
4231 } else {
4232 // Cycle around to the start of the buffer, potentially moving back to the start of
4233 // the currently active diagnostic.
4234 search_start = 0;
4235 active_primary_range.take();
4236 }
4237 }
4238 }
4239
4240 pub fn go_to_definition(
4241 workspace: &mut Workspace,
4242 _: &GoToDefinition,
4243 cx: &mut ViewContext<Workspace>,
4244 ) {
4245 let active_item = workspace.active_item(cx);
4246 let editor_handle = if let Some(editor) = active_item
4247 .as_ref()
4248 .and_then(|item| item.act_as::<Self>(cx))
4249 {
4250 editor
4251 } else {
4252 return;
4253 };
4254
4255 let editor = editor_handle.read(cx);
4256 let head = editor.newest_selection::<usize>(cx).head();
4257 let (buffer, head) =
4258 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4259 text_anchor
4260 } else {
4261 return;
4262 };
4263
4264 let definitions = workspace
4265 .project()
4266 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4267 cx.spawn(|workspace, mut cx| async move {
4268 let definitions = definitions.await?;
4269 workspace.update(&mut cx, |workspace, cx| {
4270 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4271 for definition in definitions {
4272 let range = definition.range.to_offset(definition.buffer.read(cx));
4273 let target_editor_handle = workspace
4274 .open_item(BufferItemHandle(definition.buffer), cx)
4275 .downcast::<Self>()
4276 .unwrap();
4277
4278 target_editor_handle.update(cx, |target_editor, cx| {
4279 // When selecting a definition in a different buffer, disable the nav history
4280 // to avoid creating a history entry at the previous cursor location.
4281 if editor_handle != target_editor_handle {
4282 nav_history.borrow_mut().disable();
4283 }
4284 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4285 nav_history.borrow_mut().enable();
4286 });
4287 }
4288 });
4289
4290 Ok::<(), anyhow::Error>(())
4291 })
4292 .detach_and_log_err(cx);
4293 }
4294
4295 pub fn find_all_references(
4296 workspace: &mut Workspace,
4297 _: &FindAllReferences,
4298 cx: &mut ViewContext<Workspace>,
4299 ) -> Option<Task<Result<()>>> {
4300 let active_item = workspace.active_item(cx)?;
4301 let editor_handle = active_item.act_as::<Self>(cx)?;
4302
4303 let editor = editor_handle.read(cx);
4304 let head = editor.newest_selection::<usize>(cx).head();
4305 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4306 let replica_id = editor.replica_id(cx);
4307
4308 let references = workspace
4309 .project()
4310 .update(cx, |project, cx| project.references(&buffer, head, cx));
4311 Some(cx.spawn(|workspace, mut cx| async move {
4312 let mut locations = references.await?;
4313 if locations.is_empty() {
4314 return Ok(());
4315 }
4316
4317 locations.sort_by_key(|location| location.buffer.id());
4318 let mut locations = locations.into_iter().peekable();
4319 let mut ranges_to_highlight = Vec::new();
4320
4321 let excerpt_buffer = cx.add_model(|cx| {
4322 let mut symbol_name = None;
4323 let mut multibuffer = MultiBuffer::new(replica_id);
4324 while let Some(location) = locations.next() {
4325 let buffer = location.buffer.read(cx);
4326 let mut ranges_for_buffer = Vec::new();
4327 let range = location.range.to_offset(buffer);
4328 ranges_for_buffer.push(range.clone());
4329 if symbol_name.is_none() {
4330 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4331 }
4332
4333 while let Some(next_location) = locations.peek() {
4334 if next_location.buffer == location.buffer {
4335 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4336 locations.next();
4337 } else {
4338 break;
4339 }
4340 }
4341
4342 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4343 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4344 location.buffer.clone(),
4345 ranges_for_buffer,
4346 1,
4347 cx,
4348 ));
4349 }
4350 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4351 });
4352
4353 workspace.update(&mut cx, |workspace, cx| {
4354 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4355 if let Some(editor) = editor.act_as::<Self>(cx) {
4356 editor.update(cx, |editor, cx| {
4357 let color = editor.style(cx).highlighted_line_background;
4358 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4359 });
4360 }
4361 });
4362
4363 Ok(())
4364 }))
4365 }
4366
4367 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4368 use language::ToOffset as _;
4369
4370 let project = self.project.clone()?;
4371 let selection = self.newest_anchor_selection().clone();
4372 let (cursor_buffer, cursor_buffer_position) = self
4373 .buffer
4374 .read(cx)
4375 .text_anchor_for_position(selection.head(), cx)?;
4376 let (tail_buffer, tail_buffer_position) = self
4377 .buffer
4378 .read(cx)
4379 .text_anchor_for_position(selection.tail(), cx)?;
4380 if tail_buffer != cursor_buffer {
4381 return None;
4382 }
4383
4384 let snapshot = cursor_buffer.read(cx).snapshot();
4385 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4386 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4387 let prepare_rename = project.update(cx, |project, cx| {
4388 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4389 });
4390
4391 Some(cx.spawn(|this, mut cx| async move {
4392 if let Some(rename_range) = prepare_rename.await? {
4393 let rename_buffer_range = rename_range.to_offset(&snapshot);
4394 let cursor_offset_in_rename_range =
4395 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4396 let tail_offset_in_rename_range =
4397 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4398
4399 this.update(&mut cx, |this, cx| {
4400 this.take_rename(cx);
4401 let style = this.style(cx);
4402 let buffer = this.buffer.read(cx).read(cx);
4403 let cursor_offset = selection.head().to_offset(&buffer);
4404 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4405 let rename_end = rename_start + rename_buffer_range.len();
4406 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4407 let old_name = buffer
4408 .text_for_range(rename_start..rename_end)
4409 .collect::<String>();
4410 drop(buffer);
4411
4412 // Position the selection in the rename editor so that it matches the current selection.
4413 let rename_editor = cx.add_view(|cx| {
4414 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4415 editor
4416 .buffer
4417 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4418 editor.select_ranges(
4419 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4420 None,
4421 cx,
4422 );
4423 editor.highlight_ranges::<Rename>(
4424 vec![Anchor::min()..Anchor::max()],
4425 style.diff_background_inserted,
4426 cx,
4427 );
4428 editor
4429 });
4430 this.highlight_ranges::<Rename>(
4431 vec![range.clone()],
4432 style.diff_background_deleted,
4433 cx,
4434 );
4435 this.update_selections(
4436 vec![Selection {
4437 id: selection.id,
4438 start: rename_end,
4439 end: rename_end,
4440 reversed: false,
4441 goal: SelectionGoal::None,
4442 }],
4443 None,
4444 cx,
4445 );
4446 cx.focus(&rename_editor);
4447 let block_id = this.insert_blocks(
4448 [BlockProperties {
4449 position: range.start.clone(),
4450 height: 1,
4451 render: Arc::new({
4452 let editor = rename_editor.clone();
4453 move |cx: &BlockContext| {
4454 ChildView::new(editor.clone())
4455 .contained()
4456 .with_padding_left(cx.anchor_x)
4457 .boxed()
4458 }
4459 }),
4460 disposition: BlockDisposition::Below,
4461 }],
4462 cx,
4463 )[0];
4464 this.pending_rename = Some(RenameState {
4465 range,
4466 old_name,
4467 editor: rename_editor,
4468 block_id,
4469 });
4470 });
4471 }
4472
4473 Ok(())
4474 }))
4475 }
4476
4477 pub fn confirm_rename(
4478 workspace: &mut Workspace,
4479 _: &ConfirmRename,
4480 cx: &mut ViewContext<Workspace>,
4481 ) -> Option<Task<Result<()>>> {
4482 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4483
4484 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4485 let rename = editor.take_rename(cx)?;
4486 let buffer = editor.buffer.read(cx);
4487 let (start_buffer, start) =
4488 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4489 let (end_buffer, end) =
4490 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4491 if start_buffer == end_buffer {
4492 let new_name = rename.editor.read(cx).text(cx);
4493 Some((start_buffer, start..end, rename.old_name, new_name))
4494 } else {
4495 None
4496 }
4497 })?;
4498
4499 let rename = workspace.project().clone().update(cx, |project, cx| {
4500 project.perform_rename(
4501 buffer.clone(),
4502 range.start.clone(),
4503 new_name.clone(),
4504 true,
4505 cx,
4506 )
4507 });
4508
4509 Some(cx.spawn(|workspace, cx| async move {
4510 let project_transaction = rename.await?;
4511 Self::open_project_transaction(
4512 editor,
4513 workspace,
4514 project_transaction,
4515 format!("Rename: {} → {}", old_name, new_name),
4516 cx,
4517 )
4518 .await
4519 }))
4520 }
4521
4522 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4523 let rename = self.pending_rename.take()?;
4524 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4525 self.clear_highlighted_ranges::<Rename>(cx);
4526
4527 let editor = rename.editor.read(cx);
4528 let snapshot = self.buffer.read(cx).snapshot(cx);
4529 let selection = editor.newest_selection_with_snapshot::<usize>(&snapshot);
4530
4531 // Update the selection to match the position of the selection inside
4532 // the rename editor.
4533 let rename_range = rename.range.to_offset(&snapshot);
4534 let start = snapshot
4535 .clip_offset(rename_range.start + selection.start, Bias::Left)
4536 .min(rename_range.end);
4537 let end = snapshot
4538 .clip_offset(rename_range.start + selection.end, Bias::Left)
4539 .min(rename_range.end);
4540 self.update_selections(
4541 vec![Selection {
4542 id: self.newest_anchor_selection().id,
4543 start,
4544 end,
4545 reversed: selection.reversed,
4546 goal: SelectionGoal::None,
4547 }],
4548 None,
4549 cx,
4550 );
4551
4552 Some(rename)
4553 }
4554
4555 fn invalidate_rename_range(
4556 &mut self,
4557 buffer: &MultiBufferSnapshot,
4558 cx: &mut ViewContext<Self>,
4559 ) {
4560 if let Some(rename) = self.pending_rename.as_ref() {
4561 if self.selections.len() == 1 {
4562 let head = self.selections[0].head().to_offset(buffer);
4563 let range = rename.range.to_offset(buffer).to_inclusive();
4564 if range.contains(&head) {
4565 return;
4566 }
4567 }
4568 let rename = self.pending_rename.take().unwrap();
4569 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4570 self.clear_highlighted_ranges::<Rename>(cx);
4571 }
4572 }
4573
4574 #[cfg(any(test, feature = "test-support"))]
4575 pub fn pending_rename(&self) -> Option<&RenameState> {
4576 self.pending_rename.as_ref()
4577 }
4578
4579 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4580 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4581 let buffer = self.buffer.read(cx).snapshot(cx);
4582 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4583 let is_valid = buffer
4584 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4585 .any(|entry| {
4586 entry.diagnostic.is_primary
4587 && !entry.range.is_empty()
4588 && entry.range.start == primary_range_start
4589 && entry.diagnostic.message == active_diagnostics.primary_message
4590 });
4591
4592 if is_valid != active_diagnostics.is_valid {
4593 active_diagnostics.is_valid = is_valid;
4594 let mut new_styles = HashMap::default();
4595 for (block_id, diagnostic) in &active_diagnostics.blocks {
4596 new_styles.insert(
4597 *block_id,
4598 diagnostic_block_renderer(
4599 diagnostic.clone(),
4600 is_valid,
4601 self.settings.clone(),
4602 ),
4603 );
4604 }
4605 self.display_map
4606 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4607 }
4608 }
4609 }
4610
4611 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4612 self.dismiss_diagnostics(cx);
4613 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4614 let buffer = self.buffer.read(cx).snapshot(cx);
4615
4616 let mut primary_range = None;
4617 let mut primary_message = None;
4618 let mut group_end = Point::zero();
4619 let diagnostic_group = buffer
4620 .diagnostic_group::<Point>(group_id)
4621 .map(|entry| {
4622 if entry.range.end > group_end {
4623 group_end = entry.range.end;
4624 }
4625 if entry.diagnostic.is_primary {
4626 primary_range = Some(entry.range.clone());
4627 primary_message = Some(entry.diagnostic.message.clone());
4628 }
4629 entry
4630 })
4631 .collect::<Vec<_>>();
4632 let primary_range = primary_range.unwrap();
4633 let primary_message = primary_message.unwrap();
4634 let primary_range =
4635 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4636
4637 let blocks = display_map
4638 .insert_blocks(
4639 diagnostic_group.iter().map(|entry| {
4640 let diagnostic = entry.diagnostic.clone();
4641 let message_height = diagnostic.message.lines().count() as u8;
4642 BlockProperties {
4643 position: buffer.anchor_after(entry.range.start),
4644 height: message_height,
4645 render: diagnostic_block_renderer(
4646 diagnostic,
4647 true,
4648 self.settings.clone(),
4649 ),
4650 disposition: BlockDisposition::Below,
4651 }
4652 }),
4653 cx,
4654 )
4655 .into_iter()
4656 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4657 .collect();
4658
4659 Some(ActiveDiagnosticGroup {
4660 primary_range,
4661 primary_message,
4662 blocks,
4663 is_valid: true,
4664 })
4665 });
4666 }
4667
4668 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4669 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4670 self.display_map.update(cx, |display_map, cx| {
4671 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4672 });
4673 cx.notify();
4674 }
4675 }
4676
4677 fn build_columnar_selection(
4678 &mut self,
4679 display_map: &DisplaySnapshot,
4680 row: u32,
4681 columns: &Range<u32>,
4682 reversed: bool,
4683 ) -> Option<Selection<Point>> {
4684 let is_empty = columns.start == columns.end;
4685 let line_len = display_map.line_len(row);
4686 if columns.start < line_len || (is_empty && columns.start == line_len) {
4687 let start = DisplayPoint::new(row, columns.start);
4688 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4689 Some(Selection {
4690 id: post_inc(&mut self.next_selection_id),
4691 start: start.to_point(display_map),
4692 end: end.to_point(display_map),
4693 reversed,
4694 goal: SelectionGoal::ColumnRange {
4695 start: columns.start,
4696 end: columns.end,
4697 },
4698 })
4699 } else {
4700 None
4701 }
4702 }
4703
4704 pub fn local_selections_in_range(
4705 &self,
4706 range: Range<Anchor>,
4707 display_map: &DisplaySnapshot,
4708 ) -> Vec<Selection<Point>> {
4709 let buffer = &display_map.buffer_snapshot;
4710
4711 let start_ix = match self
4712 .selections
4713 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4714 {
4715 Ok(ix) | Err(ix) => ix,
4716 };
4717 let end_ix = match self
4718 .selections
4719 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4720 {
4721 Ok(ix) => ix + 1,
4722 Err(ix) => ix,
4723 };
4724
4725 fn point_selection(
4726 selection: &Selection<Anchor>,
4727 buffer: &MultiBufferSnapshot,
4728 ) -> Selection<Point> {
4729 let start = selection.start.to_point(&buffer);
4730 let end = selection.end.to_point(&buffer);
4731 Selection {
4732 id: selection.id,
4733 start,
4734 end,
4735 reversed: selection.reversed,
4736 goal: selection.goal,
4737 }
4738 }
4739
4740 self.selections[start_ix..end_ix]
4741 .iter()
4742 .chain(
4743 self.pending_selection
4744 .as_ref()
4745 .map(|pending| &pending.selection),
4746 )
4747 .map(|s| point_selection(s, &buffer))
4748 .collect()
4749 }
4750
4751 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4752 where
4753 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4754 {
4755 let buffer = self.buffer.read(cx).snapshot(cx);
4756 let mut selections = self
4757 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4758 .peekable();
4759
4760 let mut pending_selection = self.pending_selection::<D>(&buffer);
4761
4762 iter::from_fn(move || {
4763 if let Some(pending) = pending_selection.as_mut() {
4764 while let Some(next_selection) = selections.peek() {
4765 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4766 let next_selection = selections.next().unwrap();
4767 if next_selection.start < pending.start {
4768 pending.start = next_selection.start;
4769 }
4770 if next_selection.end > pending.end {
4771 pending.end = next_selection.end;
4772 }
4773 } else if next_selection.end < pending.start {
4774 return selections.next();
4775 } else {
4776 break;
4777 }
4778 }
4779
4780 pending_selection.take()
4781 } else {
4782 selections.next()
4783 }
4784 })
4785 .collect()
4786 }
4787
4788 fn resolve_selections<'a, D, I>(
4789 &self,
4790 selections: I,
4791 snapshot: &MultiBufferSnapshot,
4792 ) -> impl 'a + Iterator<Item = Selection<D>>
4793 where
4794 D: TextDimension + Ord + Sub<D, Output = D>,
4795 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4796 {
4797 let (to_summarize, selections) = selections.into_iter().tee();
4798 let mut summaries = snapshot
4799 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4800 .into_iter();
4801 selections.map(move |s| Selection {
4802 id: s.id,
4803 start: summaries.next().unwrap(),
4804 end: summaries.next().unwrap(),
4805 reversed: s.reversed,
4806 goal: s.goal,
4807 })
4808 }
4809
4810 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4811 &self,
4812 snapshot: &MultiBufferSnapshot,
4813 ) -> Option<Selection<D>> {
4814 self.pending_selection
4815 .as_ref()
4816 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4817 }
4818
4819 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4820 &self,
4821 selection: &Selection<Anchor>,
4822 buffer: &MultiBufferSnapshot,
4823 ) -> Selection<D> {
4824 Selection {
4825 id: selection.id,
4826 start: selection.start.summary::<D>(&buffer),
4827 end: selection.end.summary::<D>(&buffer),
4828 reversed: selection.reversed,
4829 goal: selection.goal,
4830 }
4831 }
4832
4833 fn selection_count<'a>(&self) -> usize {
4834 let mut count = self.selections.len();
4835 if self.pending_selection.is_some() {
4836 count += 1;
4837 }
4838 count
4839 }
4840
4841 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4842 &self,
4843 cx: &AppContext,
4844 ) -> Selection<D> {
4845 let snapshot = self.buffer.read(cx).read(cx);
4846 self.selections
4847 .iter()
4848 .min_by_key(|s| s.id)
4849 .map(|selection| self.resolve_selection(selection, &snapshot))
4850 .or_else(|| self.pending_selection(&snapshot))
4851 .unwrap()
4852 }
4853
4854 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4855 &self,
4856 cx: &AppContext,
4857 ) -> Selection<D> {
4858 self.resolve_selection(
4859 self.newest_anchor_selection(),
4860 &self.buffer.read(cx).read(cx),
4861 )
4862 }
4863
4864 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4865 &self,
4866 snapshot: &MultiBufferSnapshot,
4867 ) -> Selection<D> {
4868 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4869 }
4870
4871 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4872 self.pending_selection
4873 .as_ref()
4874 .map(|s| &s.selection)
4875 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4876 .unwrap()
4877 }
4878
4879 pub fn update_selections<T>(
4880 &mut self,
4881 mut selections: Vec<Selection<T>>,
4882 autoscroll: Option<Autoscroll>,
4883 cx: &mut ViewContext<Self>,
4884 ) where
4885 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4886 {
4887 let buffer = self.buffer.read(cx).snapshot(cx);
4888 selections.sort_unstable_by_key(|s| s.start);
4889
4890 // Merge overlapping selections.
4891 let mut i = 1;
4892 while i < selections.len() {
4893 if selections[i - 1].end >= selections[i].start {
4894 let removed = selections.remove(i);
4895 if removed.start < selections[i - 1].start {
4896 selections[i - 1].start = removed.start;
4897 }
4898 if removed.end > selections[i - 1].end {
4899 selections[i - 1].end = removed.end;
4900 }
4901 } else {
4902 i += 1;
4903 }
4904 }
4905
4906 if let Some(autoscroll) = autoscroll {
4907 self.request_autoscroll(autoscroll, cx);
4908 }
4909
4910 self.set_selections(
4911 Arc::from_iter(selections.into_iter().map(|selection| {
4912 let end_bias = if selection.end > selection.start {
4913 Bias::Left
4914 } else {
4915 Bias::Right
4916 };
4917 Selection {
4918 id: selection.id,
4919 start: buffer.anchor_after(selection.start),
4920 end: buffer.anchor_at(selection.end, end_bias),
4921 reversed: selection.reversed,
4922 goal: selection.goal,
4923 }
4924 })),
4925 None,
4926 cx,
4927 );
4928 }
4929
4930 /// Compute new ranges for any selections that were located in excerpts that have
4931 /// since been removed.
4932 ///
4933 /// Returns a `HashMap` indicating which selections whose former head position
4934 /// was no longer present. The keys of the map are selection ids. The values are
4935 /// the id of the new excerpt where the head of the selection has been moved.
4936 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4937 let snapshot = self.buffer.read(cx).read(cx);
4938 let anchors_with_status = snapshot.refresh_anchors(
4939 self.selections
4940 .iter()
4941 .flat_map(|selection| [&selection.start, &selection.end]),
4942 );
4943 let offsets =
4944 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4945 let offsets = offsets.chunks(2);
4946 let statuses = anchors_with_status
4947 .chunks(2)
4948 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4949
4950 let mut selections_with_lost_position = HashMap::default();
4951 let new_selections = offsets
4952 .zip(statuses)
4953 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4954 let selection = &self.selections[selection_ix];
4955 let kept_head = if selection.reversed {
4956 kept_start
4957 } else {
4958 kept_end
4959 };
4960 if !kept_head {
4961 selections_with_lost_position
4962 .insert(selection.id, selection.head().excerpt_id.clone());
4963 }
4964
4965 Selection {
4966 id: selection.id,
4967 start: offsets[0],
4968 end: offsets[1],
4969 reversed: selection.reversed,
4970 goal: selection.goal,
4971 }
4972 })
4973 .collect();
4974 drop(snapshot);
4975 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4976 selections_with_lost_position
4977 }
4978
4979 fn set_selections(
4980 &mut self,
4981 selections: Arc<[Selection<Anchor>]>,
4982 pending_selection: Option<PendingSelection>,
4983 cx: &mut ViewContext<Self>,
4984 ) {
4985 let old_cursor_position = self.newest_anchor_selection().head();
4986
4987 self.selections = selections;
4988 self.pending_selection = pending_selection;
4989 if self.focused {
4990 self.buffer.update(cx, |buffer, cx| {
4991 buffer.set_active_selections(&self.selections, cx)
4992 });
4993 }
4994
4995 let display_map = self
4996 .display_map
4997 .update(cx, |display_map, cx| display_map.snapshot(cx));
4998 let buffer = &display_map.buffer_snapshot;
4999 self.add_selections_state = None;
5000 self.select_next_state = None;
5001 self.select_larger_syntax_node_stack.clear();
5002 self.autoclose_stack.invalidate(&self.selections, &buffer);
5003 self.snippet_stack.invalidate(&self.selections, &buffer);
5004 self.invalidate_rename_range(&buffer, cx);
5005
5006 let new_cursor_position = self.newest_anchor_selection().head();
5007
5008 self.push_to_nav_history(
5009 old_cursor_position.clone(),
5010 Some(new_cursor_position.to_point(&buffer)),
5011 cx,
5012 );
5013
5014 let completion_menu = match self.context_menu.as_mut() {
5015 Some(ContextMenu::Completions(menu)) => Some(menu),
5016 _ => {
5017 self.context_menu.take();
5018 None
5019 }
5020 };
5021
5022 if let Some(completion_menu) = completion_menu {
5023 let cursor_position = new_cursor_position.to_offset(&buffer);
5024 let (word_range, kind) =
5025 buffer.surrounding_word(completion_menu.initial_position.clone());
5026 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5027 {
5028 let query = Self::completion_query(&buffer, cursor_position);
5029 cx.background()
5030 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5031 self.show_completions(&ShowCompletions, cx);
5032 } else {
5033 self.hide_context_menu(cx);
5034 }
5035 }
5036
5037 if old_cursor_position.to_display_point(&display_map).row()
5038 != new_cursor_position.to_display_point(&display_map).row()
5039 {
5040 self.available_code_actions.take();
5041 }
5042 self.refresh_code_actions(cx);
5043 self.refresh_document_highlights(cx);
5044
5045 self.pause_cursor_blinking(cx);
5046 cx.emit(Event::SelectionsChanged);
5047 }
5048
5049 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5050 self.autoscroll_request = Some(autoscroll);
5051 cx.notify();
5052 }
5053
5054 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5055 self.start_transaction_at(Instant::now(), cx);
5056 }
5057
5058 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5059 self.end_selection(cx);
5060 if let Some(tx_id) = self
5061 .buffer
5062 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5063 {
5064 self.selection_history
5065 .insert(tx_id, (self.selections.clone(), None));
5066 }
5067 }
5068
5069 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5070 self.end_transaction_at(Instant::now(), cx);
5071 }
5072
5073 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5074 if let Some(tx_id) = self
5075 .buffer
5076 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5077 {
5078 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5079 *end_selections = Some(self.selections.clone());
5080 } else {
5081 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5082 }
5083 }
5084 }
5085
5086 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5087 log::info!("Editor::page_up");
5088 }
5089
5090 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5091 log::info!("Editor::page_down");
5092 }
5093
5094 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5095 let mut fold_ranges = Vec::new();
5096
5097 let selections = self.local_selections::<Point>(cx);
5098 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5099 for selection in selections {
5100 let range = selection.display_range(&display_map).sorted();
5101 let buffer_start_row = range.start.to_point(&display_map).row;
5102
5103 for row in (0..=range.end.row()).rev() {
5104 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5105 let fold_range = self.foldable_range_for_line(&display_map, row);
5106 if fold_range.end.row >= buffer_start_row {
5107 fold_ranges.push(fold_range);
5108 if row <= range.start.row() {
5109 break;
5110 }
5111 }
5112 }
5113 }
5114 }
5115
5116 self.fold_ranges(fold_ranges, cx);
5117 }
5118
5119 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5120 let selections = self.local_selections::<Point>(cx);
5121 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5122 let buffer = &display_map.buffer_snapshot;
5123 let ranges = selections
5124 .iter()
5125 .map(|s| {
5126 let range = s.display_range(&display_map).sorted();
5127 let mut start = range.start.to_point(&display_map);
5128 let mut end = range.end.to_point(&display_map);
5129 start.column = 0;
5130 end.column = buffer.line_len(end.row);
5131 start..end
5132 })
5133 .collect::<Vec<_>>();
5134 self.unfold_ranges(ranges, cx);
5135 }
5136
5137 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5138 let max_point = display_map.max_point();
5139 if display_row >= max_point.row() {
5140 false
5141 } else {
5142 let (start_indent, is_blank) = display_map.line_indent(display_row);
5143 if is_blank {
5144 false
5145 } else {
5146 for display_row in display_row + 1..=max_point.row() {
5147 let (indent, is_blank) = display_map.line_indent(display_row);
5148 if !is_blank {
5149 return indent > start_indent;
5150 }
5151 }
5152 false
5153 }
5154 }
5155 }
5156
5157 fn foldable_range_for_line(
5158 &self,
5159 display_map: &DisplaySnapshot,
5160 start_row: u32,
5161 ) -> Range<Point> {
5162 let max_point = display_map.max_point();
5163
5164 let (start_indent, _) = display_map.line_indent(start_row);
5165 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5166 let mut end = None;
5167 for row in start_row + 1..=max_point.row() {
5168 let (indent, is_blank) = display_map.line_indent(row);
5169 if !is_blank && indent <= start_indent {
5170 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5171 break;
5172 }
5173 }
5174
5175 let end = end.unwrap_or(max_point);
5176 return start.to_point(display_map)..end.to_point(display_map);
5177 }
5178
5179 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5180 let selections = self.local_selections::<Point>(cx);
5181 let ranges = selections.into_iter().map(|s| s.start..s.end);
5182 self.fold_ranges(ranges, cx);
5183 }
5184
5185 fn fold_ranges<T: ToOffset>(
5186 &mut self,
5187 ranges: impl IntoIterator<Item = Range<T>>,
5188 cx: &mut ViewContext<Self>,
5189 ) {
5190 let mut ranges = ranges.into_iter().peekable();
5191 if ranges.peek().is_some() {
5192 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5193 self.request_autoscroll(Autoscroll::Fit, cx);
5194 cx.notify();
5195 }
5196 }
5197
5198 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5199 if !ranges.is_empty() {
5200 self.display_map
5201 .update(cx, |map, cx| map.unfold(ranges, cx));
5202 self.request_autoscroll(Autoscroll::Fit, cx);
5203 cx.notify();
5204 }
5205 }
5206
5207 pub fn insert_blocks(
5208 &mut self,
5209 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5210 cx: &mut ViewContext<Self>,
5211 ) -> Vec<BlockId> {
5212 let blocks = self
5213 .display_map
5214 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5215 self.request_autoscroll(Autoscroll::Fit, cx);
5216 blocks
5217 }
5218
5219 pub fn replace_blocks(
5220 &mut self,
5221 blocks: HashMap<BlockId, RenderBlock>,
5222 cx: &mut ViewContext<Self>,
5223 ) {
5224 self.display_map
5225 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5226 self.request_autoscroll(Autoscroll::Fit, cx);
5227 }
5228
5229 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5230 self.display_map.update(cx, |display_map, cx| {
5231 display_map.remove_blocks(block_ids, cx)
5232 });
5233 }
5234
5235 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5236 self.display_map
5237 .update(cx, |map, cx| map.snapshot(cx))
5238 .longest_row()
5239 }
5240
5241 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5242 self.display_map
5243 .update(cx, |map, cx| map.snapshot(cx))
5244 .max_point()
5245 }
5246
5247 pub fn text(&self, cx: &AppContext) -> String {
5248 self.buffer.read(cx).read(cx).text()
5249 }
5250
5251 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5252 self.buffer
5253 .read(cx)
5254 .as_singleton()
5255 .expect("you can only call set_text on editors for singleton buffers")
5256 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5257 }
5258
5259 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5260 self.display_map
5261 .update(cx, |map, cx| map.snapshot(cx))
5262 .text()
5263 }
5264
5265 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5266 let language = self.language(cx);
5267 let settings = self.settings.borrow();
5268 let mode = self
5269 .soft_wrap_mode_override
5270 .unwrap_or_else(|| settings.soft_wrap(language));
5271 match mode {
5272 settings::SoftWrap::None => SoftWrap::None,
5273 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5274 settings::SoftWrap::PreferredLineLength => {
5275 SoftWrap::Column(settings.preferred_line_length(language))
5276 }
5277 }
5278 }
5279
5280 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5281 self.soft_wrap_mode_override = Some(mode);
5282 cx.notify();
5283 }
5284
5285 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5286 self.display_map
5287 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5288 }
5289
5290 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5291 self.highlighted_rows = rows;
5292 }
5293
5294 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5295 self.highlighted_rows.clone()
5296 }
5297
5298 pub fn highlight_ranges<T: 'static>(
5299 &mut self,
5300 ranges: Vec<Range<Anchor>>,
5301 color: Color,
5302 cx: &mut ViewContext<Self>,
5303 ) {
5304 self.highlighted_ranges
5305 .insert(TypeId::of::<T>(), (color, ranges));
5306 cx.notify();
5307 }
5308
5309 pub fn clear_highlighted_ranges<T: 'static>(
5310 &mut self,
5311 cx: &mut ViewContext<Self>,
5312 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5313 cx.notify();
5314 self.highlighted_ranges.remove(&TypeId::of::<T>())
5315 }
5316
5317 #[cfg(feature = "test-support")]
5318 pub fn all_highlighted_ranges(
5319 &mut self,
5320 cx: &mut ViewContext<Self>,
5321 ) -> Vec<(Range<DisplayPoint>, Color)> {
5322 let snapshot = self.snapshot(cx);
5323 let buffer = &snapshot.buffer_snapshot;
5324 let start = buffer.anchor_before(0);
5325 let end = buffer.anchor_after(buffer.len());
5326 self.highlighted_ranges_in_range(start..end, &snapshot)
5327 }
5328
5329 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5330 self.highlighted_ranges
5331 .get(&TypeId::of::<T>())
5332 .map(|(color, ranges)| (*color, ranges.as_slice()))
5333 }
5334
5335 pub fn highlighted_ranges_in_range(
5336 &self,
5337 search_range: Range<Anchor>,
5338 display_snapshot: &DisplaySnapshot,
5339 ) -> Vec<(Range<DisplayPoint>, Color)> {
5340 let mut results = Vec::new();
5341 let buffer = &display_snapshot.buffer_snapshot;
5342 for (color, ranges) in self.highlighted_ranges.values() {
5343 let start_ix = match ranges.binary_search_by(|probe| {
5344 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5345 if cmp.is_gt() {
5346 Ordering::Greater
5347 } else {
5348 Ordering::Less
5349 }
5350 }) {
5351 Ok(i) | Err(i) => i,
5352 };
5353 for range in &ranges[start_ix..] {
5354 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5355 break;
5356 }
5357 let start = range
5358 .start
5359 .to_point(buffer)
5360 .to_display_point(display_snapshot);
5361 let end = range
5362 .end
5363 .to_point(buffer)
5364 .to_display_point(display_snapshot);
5365 results.push((start..end, *color))
5366 }
5367 }
5368 results
5369 }
5370
5371 fn next_blink_epoch(&mut self) -> usize {
5372 self.blink_epoch += 1;
5373 self.blink_epoch
5374 }
5375
5376 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5377 if !self.focused {
5378 return;
5379 }
5380
5381 self.show_local_cursors = true;
5382 cx.notify();
5383
5384 let epoch = self.next_blink_epoch();
5385 cx.spawn(|this, mut cx| {
5386 let this = this.downgrade();
5387 async move {
5388 Timer::after(CURSOR_BLINK_INTERVAL).await;
5389 if let Some(this) = this.upgrade(&cx) {
5390 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5391 }
5392 }
5393 })
5394 .detach();
5395 }
5396
5397 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5398 if epoch == self.blink_epoch {
5399 self.blinking_paused = false;
5400 self.blink_cursors(epoch, cx);
5401 }
5402 }
5403
5404 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5405 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5406 self.show_local_cursors = !self.show_local_cursors;
5407 cx.notify();
5408
5409 let epoch = self.next_blink_epoch();
5410 cx.spawn(|this, mut cx| {
5411 let this = this.downgrade();
5412 async move {
5413 Timer::after(CURSOR_BLINK_INTERVAL).await;
5414 if let Some(this) = this.upgrade(&cx) {
5415 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5416 }
5417 }
5418 })
5419 .detach();
5420 }
5421 }
5422
5423 pub fn show_local_cursors(&self) -> bool {
5424 self.show_local_cursors
5425 }
5426
5427 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5428 cx.notify();
5429 }
5430
5431 fn on_buffer_event(
5432 &mut self,
5433 _: ModelHandle<MultiBuffer>,
5434 event: &language::Event,
5435 cx: &mut ViewContext<Self>,
5436 ) {
5437 match event {
5438 language::Event::Edited => {
5439 self.refresh_active_diagnostics(cx);
5440 self.refresh_code_actions(cx);
5441 cx.emit(Event::Edited);
5442 }
5443 language::Event::Dirtied => cx.emit(Event::Dirtied),
5444 language::Event::Saved => cx.emit(Event::Saved),
5445 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5446 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5447 language::Event::Closed => cx.emit(Event::Closed),
5448 language::Event::DiagnosticsUpdated => {
5449 self.refresh_active_diagnostics(cx);
5450 }
5451 _ => {}
5452 }
5453 }
5454
5455 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5456 cx.notify();
5457 }
5458
5459 pub fn set_searchable(&mut self, searchable: bool) {
5460 self.searchable = searchable;
5461 }
5462
5463 pub fn searchable(&self) -> bool {
5464 self.searchable
5465 }
5466
5467 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5468 let active_item = workspace.active_item(cx);
5469 let editor_handle = if let Some(editor) = active_item
5470 .as_ref()
5471 .and_then(|item| item.act_as::<Self>(cx))
5472 {
5473 editor
5474 } else {
5475 cx.propagate_action();
5476 return;
5477 };
5478
5479 let editor = editor_handle.read(cx);
5480 let buffer = editor.buffer.read(cx);
5481 if buffer.is_singleton() {
5482 cx.propagate_action();
5483 return;
5484 }
5485
5486 let mut new_selections_by_buffer = HashMap::default();
5487 for selection in editor.local_selections::<usize>(cx) {
5488 for (buffer, mut range) in
5489 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5490 {
5491 if selection.reversed {
5492 mem::swap(&mut range.start, &mut range.end);
5493 }
5494 new_selections_by_buffer
5495 .entry(buffer)
5496 .or_insert(Vec::new())
5497 .push(range)
5498 }
5499 }
5500
5501 editor_handle.update(cx, |editor, cx| {
5502 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5503 });
5504 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5505 nav_history.borrow_mut().disable();
5506
5507 // We defer the pane interaction because we ourselves are a workspace item
5508 // and activating a new item causes the pane to call a method on us reentrantly,
5509 // which panics if we're on the stack.
5510 cx.defer(move |workspace, cx| {
5511 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5512 let buffer = BufferItemHandle(buffer);
5513 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5514 workspace.activate_next_pane(cx);
5515 }
5516
5517 let editor = workspace
5518 .open_item(buffer, cx)
5519 .downcast::<Editor>()
5520 .unwrap();
5521
5522 editor.update(cx, |editor, cx| {
5523 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5524 });
5525 }
5526
5527 nav_history.borrow_mut().enable();
5528 });
5529 }
5530}
5531
5532impl EditorSnapshot {
5533 pub fn is_focused(&self) -> bool {
5534 self.is_focused
5535 }
5536
5537 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5538 self.placeholder_text.as_ref()
5539 }
5540
5541 pub fn scroll_position(&self) -> Vector2F {
5542 compute_scroll_position(
5543 &self.display_snapshot,
5544 self.scroll_position,
5545 &self.scroll_top_anchor,
5546 )
5547 }
5548}
5549
5550impl Deref for EditorSnapshot {
5551 type Target = DisplaySnapshot;
5552
5553 fn deref(&self) -> &Self::Target {
5554 &self.display_snapshot
5555 }
5556}
5557
5558fn compute_scroll_position(
5559 snapshot: &DisplaySnapshot,
5560 mut scroll_position: Vector2F,
5561 scroll_top_anchor: &Option<Anchor>,
5562) -> Vector2F {
5563 if let Some(anchor) = scroll_top_anchor {
5564 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5565 scroll_position.set_y(scroll_top + scroll_position.y());
5566 } else {
5567 scroll_position.set_y(0.);
5568 }
5569 scroll_position
5570}
5571
5572#[derive(Copy, Clone)]
5573pub enum Event {
5574 Activate,
5575 Edited,
5576 Blurred,
5577 Dirtied,
5578 Saved,
5579 TitleChanged,
5580 SelectionsChanged,
5581 Closed,
5582}
5583
5584impl Entity for Editor {
5585 type Event = Event;
5586}
5587
5588impl View for Editor {
5589 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5590 let style = self.style(cx);
5591 self.display_map.update(cx, |map, cx| {
5592 map.set_font(style.text.font_id, style.text.font_size, cx)
5593 });
5594 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5595 }
5596
5597 fn ui_name() -> &'static str {
5598 "Editor"
5599 }
5600
5601 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5602 self.focused = true;
5603 self.blink_cursors(self.blink_epoch, cx);
5604 self.buffer.update(cx, |buffer, cx| {
5605 buffer.finalize_last_transaction(cx);
5606 buffer.set_active_selections(&self.selections, cx)
5607 });
5608 }
5609
5610 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5611 self.focused = false;
5612 self.show_local_cursors = false;
5613 self.buffer
5614 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5615 self.hide_context_menu(cx);
5616 cx.emit(Event::Blurred);
5617 cx.notify();
5618 }
5619
5620 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5621 let mut cx = Self::default_keymap_context();
5622 let mode = match self.mode {
5623 EditorMode::SingleLine => "single_line",
5624 EditorMode::AutoHeight { .. } => "auto_height",
5625 EditorMode::Full => "full",
5626 };
5627 cx.map.insert("mode".into(), mode.into());
5628 if self.pending_rename.is_some() {
5629 cx.set.insert("renaming".into());
5630 }
5631 match self.context_menu.as_ref() {
5632 Some(ContextMenu::Completions(_)) => {
5633 cx.set.insert("showing_completions".into());
5634 }
5635 Some(ContextMenu::CodeActions(_)) => {
5636 cx.set.insert("showing_code_actions".into());
5637 }
5638 None => {}
5639 }
5640 cx
5641 }
5642}
5643
5644fn build_style(
5645 settings: &Settings,
5646 get_field_editor_theme: Option<GetFieldEditorTheme>,
5647 cx: &AppContext,
5648) -> EditorStyle {
5649 let mut theme = settings.theme.editor.clone();
5650 if let Some(get_field_editor_theme) = get_field_editor_theme {
5651 let field_editor_theme = get_field_editor_theme(&settings.theme);
5652 if let Some(background) = field_editor_theme.container.background_color {
5653 theme.background = background;
5654 }
5655 theme.text_color = field_editor_theme.text.color;
5656 theme.selection = field_editor_theme.selection;
5657 EditorStyle {
5658 text: field_editor_theme.text,
5659 placeholder_text: field_editor_theme.placeholder_text,
5660 theme,
5661 }
5662 } else {
5663 let font_cache = cx.font_cache();
5664 let font_family_id = settings.buffer_font_family;
5665 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5666 let font_properties = Default::default();
5667 let font_id = font_cache
5668 .select_font(font_family_id, &font_properties)
5669 .unwrap();
5670 let font_size = settings.buffer_font_size;
5671 EditorStyle {
5672 text: TextStyle {
5673 color: settings.theme.editor.text_color,
5674 font_family_name,
5675 font_family_id,
5676 font_id,
5677 font_size,
5678 font_properties,
5679 underline: None,
5680 },
5681 placeholder_text: None,
5682 theme,
5683 }
5684 }
5685}
5686
5687impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5688 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5689 let start = self.start.to_point(buffer);
5690 let end = self.end.to_point(buffer);
5691 if self.reversed {
5692 end..start
5693 } else {
5694 start..end
5695 }
5696 }
5697
5698 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5699 let start = self.start.to_offset(buffer);
5700 let end = self.end.to_offset(buffer);
5701 if self.reversed {
5702 end..start
5703 } else {
5704 start..end
5705 }
5706 }
5707
5708 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5709 let start = self
5710 .start
5711 .to_point(&map.buffer_snapshot)
5712 .to_display_point(map);
5713 let end = self
5714 .end
5715 .to_point(&map.buffer_snapshot)
5716 .to_display_point(map);
5717 if self.reversed {
5718 end..start
5719 } else {
5720 start..end
5721 }
5722 }
5723
5724 fn spanned_rows(
5725 &self,
5726 include_end_if_at_line_start: bool,
5727 map: &DisplaySnapshot,
5728 ) -> Range<u32> {
5729 let start = self.start.to_point(&map.buffer_snapshot);
5730 let mut end = self.end.to_point(&map.buffer_snapshot);
5731 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5732 end.row -= 1;
5733 }
5734
5735 let buffer_start = map.prev_line_boundary(start).0;
5736 let buffer_end = map.next_line_boundary(end).0;
5737 buffer_start.row..buffer_end.row + 1
5738 }
5739}
5740
5741impl<T: InvalidationRegion> InvalidationStack<T> {
5742 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5743 where
5744 S: Clone + ToOffset,
5745 {
5746 while let Some(region) = self.last() {
5747 let all_selections_inside_invalidation_ranges =
5748 if selections.len() == region.ranges().len() {
5749 selections
5750 .iter()
5751 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5752 .all(|(selection, invalidation_range)| {
5753 let head = selection.head().to_offset(&buffer);
5754 invalidation_range.start <= head && invalidation_range.end >= head
5755 })
5756 } else {
5757 false
5758 };
5759
5760 if all_selections_inside_invalidation_ranges {
5761 break;
5762 } else {
5763 self.pop();
5764 }
5765 }
5766 }
5767}
5768
5769impl<T> Default for InvalidationStack<T> {
5770 fn default() -> Self {
5771 Self(Default::default())
5772 }
5773}
5774
5775impl<T> Deref for InvalidationStack<T> {
5776 type Target = Vec<T>;
5777
5778 fn deref(&self) -> &Self::Target {
5779 &self.0
5780 }
5781}
5782
5783impl<T> DerefMut for InvalidationStack<T> {
5784 fn deref_mut(&mut self) -> &mut Self::Target {
5785 &mut self.0
5786 }
5787}
5788
5789impl InvalidationRegion for BracketPairState {
5790 fn ranges(&self) -> &[Range<Anchor>] {
5791 &self.ranges
5792 }
5793}
5794
5795impl InvalidationRegion for SnippetState {
5796 fn ranges(&self) -> &[Range<Anchor>] {
5797 &self.ranges[self.active_index]
5798 }
5799}
5800
5801impl Deref for EditorStyle {
5802 type Target = theme::Editor;
5803
5804 fn deref(&self) -> &Self::Target {
5805 &self.theme
5806 }
5807}
5808
5809pub fn diagnostic_block_renderer(
5810 diagnostic: Diagnostic,
5811 is_valid: bool,
5812 settings: watch::Receiver<Settings>,
5813) -> RenderBlock {
5814 let mut highlighted_lines = Vec::new();
5815 for line in diagnostic.message.lines() {
5816 highlighted_lines.push(highlight_diagnostic_message(line));
5817 }
5818
5819 Arc::new(move |cx: &BlockContext| {
5820 let settings = settings.borrow();
5821 let theme = &settings.theme.editor;
5822 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5823 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5824 Flex::column()
5825 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5826 Label::new(
5827 line.clone(),
5828 style.message.clone().with_font_size(font_size),
5829 )
5830 .with_highlights(highlights.clone())
5831 .contained()
5832 .with_margin_left(cx.anchor_x)
5833 .boxed()
5834 }))
5835 .aligned()
5836 .left()
5837 .boxed()
5838 })
5839}
5840
5841pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5842 let mut message_without_backticks = String::new();
5843 let mut prev_offset = 0;
5844 let mut inside_block = false;
5845 let mut highlights = Vec::new();
5846 for (match_ix, (offset, _)) in message
5847 .match_indices('`')
5848 .chain([(message.len(), "")])
5849 .enumerate()
5850 {
5851 message_without_backticks.push_str(&message[prev_offset..offset]);
5852 if inside_block {
5853 highlights.extend(prev_offset - match_ix..offset - match_ix);
5854 }
5855
5856 inside_block = !inside_block;
5857 prev_offset = offset + 1;
5858 }
5859
5860 (message_without_backticks, highlights)
5861}
5862
5863pub fn diagnostic_style(
5864 severity: DiagnosticSeverity,
5865 valid: bool,
5866 theme: &theme::Editor,
5867) -> DiagnosticStyle {
5868 match (severity, valid) {
5869 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5870 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5871 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5872 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5873 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5874 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5875 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5876 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5877 _ => theme.invalid_hint_diagnostic.clone(),
5878 }
5879}
5880
5881pub fn combine_syntax_and_fuzzy_match_highlights(
5882 text: &str,
5883 default_style: HighlightStyle,
5884 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5885 match_indices: &[usize],
5886) -> Vec<(Range<usize>, HighlightStyle)> {
5887 let mut result = Vec::new();
5888 let mut match_indices = match_indices.iter().copied().peekable();
5889
5890 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5891 {
5892 syntax_highlight.font_properties.weight(Default::default());
5893
5894 // Add highlights for any fuzzy match characters before the next
5895 // syntax highlight range.
5896 while let Some(&match_index) = match_indices.peek() {
5897 if match_index >= range.start {
5898 break;
5899 }
5900 match_indices.next();
5901 let end_index = char_ix_after(match_index, text);
5902 let mut match_style = default_style;
5903 match_style.font_properties.weight(fonts::Weight::BOLD);
5904 result.push((match_index..end_index, match_style));
5905 }
5906
5907 if range.start == usize::MAX {
5908 break;
5909 }
5910
5911 // Add highlights for any fuzzy match characters within the
5912 // syntax highlight range.
5913 let mut offset = range.start;
5914 while let Some(&match_index) = match_indices.peek() {
5915 if match_index >= range.end {
5916 break;
5917 }
5918
5919 match_indices.next();
5920 if match_index > offset {
5921 result.push((offset..match_index, syntax_highlight));
5922 }
5923
5924 let mut end_index = char_ix_after(match_index, text);
5925 while let Some(&next_match_index) = match_indices.peek() {
5926 if next_match_index == end_index && next_match_index < range.end {
5927 end_index = char_ix_after(next_match_index, text);
5928 match_indices.next();
5929 } else {
5930 break;
5931 }
5932 }
5933
5934 let mut match_style = syntax_highlight;
5935 match_style.font_properties.weight(fonts::Weight::BOLD);
5936 result.push((match_index..end_index, match_style));
5937 offset = end_index;
5938 }
5939
5940 if offset < range.end {
5941 result.push((offset..range.end, syntax_highlight));
5942 }
5943 }
5944
5945 fn char_ix_after(ix: usize, text: &str) -> usize {
5946 ix + text[ix..].chars().next().unwrap().len_utf8()
5947 }
5948
5949 result
5950}
5951
5952pub fn styled_runs_for_code_label<'a>(
5953 label: &'a CodeLabel,
5954 default_color: Color,
5955 syntax_theme: &'a theme::SyntaxTheme,
5956) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5957 const MUTED_OPACITY: usize = 165;
5958
5959 let mut muted_default_style = HighlightStyle {
5960 color: default_color,
5961 ..Default::default()
5962 };
5963 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5964
5965 let mut prev_end = label.filter_range.end;
5966 label
5967 .runs
5968 .iter()
5969 .enumerate()
5970 .flat_map(move |(ix, (range, highlight_id))| {
5971 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5972 style
5973 } else {
5974 return Default::default();
5975 };
5976 let mut muted_style = style.clone();
5977 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5978
5979 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5980 if range.start >= label.filter_range.end {
5981 if range.start > prev_end {
5982 runs.push((prev_end..range.start, muted_default_style));
5983 }
5984 runs.push((range.clone(), muted_style));
5985 } else if range.end <= label.filter_range.end {
5986 runs.push((range.clone(), style));
5987 } else {
5988 runs.push((range.start..label.filter_range.end, style));
5989 runs.push((label.filter_range.end..range.end, muted_style));
5990 }
5991 prev_end = cmp::max(prev_end, range.end);
5992
5993 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5994 runs.push((prev_end..label.text.len(), muted_default_style));
5995 }
5996
5997 runs
5998 })
5999}
6000
6001#[cfg(test)]
6002mod tests {
6003 use super::*;
6004 use language::{LanguageConfig, LanguageServerConfig};
6005 use lsp::FakeLanguageServer;
6006 use project::FakeFs;
6007 use smol::stream::StreamExt;
6008 use std::{cell::RefCell, rc::Rc, time::Instant};
6009 use text::Point;
6010 use unindent::Unindent;
6011 use util::test::sample_text;
6012
6013 #[gpui::test]
6014 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6015 let mut now = Instant::now();
6016 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6017 let group_interval = buffer.read(cx).transaction_group_interval();
6018 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6019 let settings = Settings::test(cx);
6020 let (_, editor) = cx.add_window(Default::default(), |cx| {
6021 build_editor(buffer.clone(), settings, cx)
6022 });
6023
6024 editor.update(cx, |editor, cx| {
6025 editor.start_transaction_at(now, cx);
6026 editor.select_ranges([2..4], None, cx);
6027 editor.insert("cd", cx);
6028 editor.end_transaction_at(now, cx);
6029 assert_eq!(editor.text(cx), "12cd56");
6030 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6031
6032 editor.start_transaction_at(now, cx);
6033 editor.select_ranges([4..5], None, cx);
6034 editor.insert("e", cx);
6035 editor.end_transaction_at(now, cx);
6036 assert_eq!(editor.text(cx), "12cde6");
6037 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6038
6039 now += group_interval + Duration::from_millis(1);
6040 editor.select_ranges([2..2], None, cx);
6041
6042 // Simulate an edit in another editor
6043 buffer.update(cx, |buffer, cx| {
6044 buffer.start_transaction_at(now, cx);
6045 buffer.edit([0..1], "a", cx);
6046 buffer.edit([1..1], "b", cx);
6047 buffer.end_transaction_at(now, cx);
6048 });
6049
6050 assert_eq!(editor.text(cx), "ab2cde6");
6051 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6052
6053 // Last transaction happened past the group interval in a different editor.
6054 // Undo it individually and don't restore selections.
6055 editor.undo(&Undo, cx);
6056 assert_eq!(editor.text(cx), "12cde6");
6057 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6058
6059 // First two transactions happened within the group interval in this editor.
6060 // Undo them together and restore selections.
6061 editor.undo(&Undo, cx);
6062 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6063 assert_eq!(editor.text(cx), "123456");
6064 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6065
6066 // Redo the first two transactions together.
6067 editor.redo(&Redo, cx);
6068 assert_eq!(editor.text(cx), "12cde6");
6069 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6070
6071 // Redo the last transaction on its own.
6072 editor.redo(&Redo, cx);
6073 assert_eq!(editor.text(cx), "ab2cde6");
6074 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6075
6076 // Test empty transactions.
6077 editor.start_transaction_at(now, cx);
6078 editor.end_transaction_at(now, cx);
6079 editor.undo(&Undo, cx);
6080 assert_eq!(editor.text(cx), "12cde6");
6081 });
6082 }
6083
6084 #[gpui::test]
6085 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6086 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6087 let settings = Settings::test(cx);
6088 let (_, editor) =
6089 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6090
6091 editor.update(cx, |view, cx| {
6092 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6093 });
6094
6095 assert_eq!(
6096 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6097 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6098 );
6099
6100 editor.update(cx, |view, cx| {
6101 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6102 });
6103
6104 assert_eq!(
6105 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6106 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6107 );
6108
6109 editor.update(cx, |view, cx| {
6110 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6111 });
6112
6113 assert_eq!(
6114 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6115 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6116 );
6117
6118 editor.update(cx, |view, cx| {
6119 view.end_selection(cx);
6120 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6121 });
6122
6123 assert_eq!(
6124 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6125 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6126 );
6127
6128 editor.update(cx, |view, cx| {
6129 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6130 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6131 });
6132
6133 assert_eq!(
6134 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6135 [
6136 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6137 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6138 ]
6139 );
6140
6141 editor.update(cx, |view, cx| {
6142 view.end_selection(cx);
6143 });
6144
6145 assert_eq!(
6146 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6147 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6148 );
6149 }
6150
6151 #[gpui::test]
6152 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6153 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6154 let settings = Settings::test(cx);
6155 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6156
6157 view.update(cx, |view, cx| {
6158 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6159 assert_eq!(
6160 view.selected_display_ranges(cx),
6161 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6162 );
6163 });
6164
6165 view.update(cx, |view, cx| {
6166 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6167 assert_eq!(
6168 view.selected_display_ranges(cx),
6169 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6170 );
6171 });
6172
6173 view.update(cx, |view, cx| {
6174 view.cancel(&Cancel, cx);
6175 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6176 assert_eq!(
6177 view.selected_display_ranges(cx),
6178 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6179 );
6180 });
6181 }
6182
6183 #[gpui::test]
6184 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6185 cx.add_window(Default::default(), |cx| {
6186 use workspace::ItemView;
6187 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6188 let settings = Settings::test(&cx);
6189 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6190 let mut editor = build_editor(buffer.clone(), settings, cx);
6191 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6192
6193 // Move the cursor a small distance.
6194 // Nothing is added to the navigation history.
6195 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6196 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6197 assert!(nav_history.borrow_mut().pop_backward().is_none());
6198
6199 // Move the cursor a large distance.
6200 // The history can jump back to the previous position.
6201 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6202 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6203 editor.navigate(nav_entry.data.unwrap(), cx);
6204 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6205 assert_eq!(
6206 editor.selected_display_ranges(cx),
6207 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6208 );
6209
6210 // Move the cursor a small distance via the mouse.
6211 // Nothing is added to the navigation history.
6212 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6213 editor.end_selection(cx);
6214 assert_eq!(
6215 editor.selected_display_ranges(cx),
6216 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6217 );
6218 assert!(nav_history.borrow_mut().pop_backward().is_none());
6219
6220 // Move the cursor a large distance via the mouse.
6221 // The history can jump back to the previous position.
6222 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6223 editor.end_selection(cx);
6224 assert_eq!(
6225 editor.selected_display_ranges(cx),
6226 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6227 );
6228 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6229 editor.navigate(nav_entry.data.unwrap(), cx);
6230 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6231 assert_eq!(
6232 editor.selected_display_ranges(cx),
6233 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6234 );
6235
6236 editor
6237 });
6238 }
6239
6240 #[gpui::test]
6241 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6242 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6243 let settings = Settings::test(cx);
6244 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6245
6246 view.update(cx, |view, cx| {
6247 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6248 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6249 view.end_selection(cx);
6250
6251 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6252 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6253 view.end_selection(cx);
6254 assert_eq!(
6255 view.selected_display_ranges(cx),
6256 [
6257 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6258 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6259 ]
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(3, 4)..DisplayPoint::new(1, 1)]
6268 );
6269 });
6270
6271 view.update(cx, |view, cx| {
6272 view.cancel(&Cancel, cx);
6273 assert_eq!(
6274 view.selected_display_ranges(cx),
6275 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6276 );
6277 });
6278 }
6279
6280 #[gpui::test]
6281 fn test_fold(cx: &mut gpui::MutableAppContext) {
6282 let buffer = MultiBuffer::build_simple(
6283 &"
6284 impl Foo {
6285 // Hello!
6286
6287 fn a() {
6288 1
6289 }
6290
6291 fn b() {
6292 2
6293 }
6294
6295 fn c() {
6296 3
6297 }
6298 }
6299 "
6300 .unindent(),
6301 cx,
6302 );
6303 let settings = Settings::test(&cx);
6304 let (_, view) = cx.add_window(Default::default(), |cx| {
6305 build_editor(buffer.clone(), settings, cx)
6306 });
6307
6308 view.update(cx, |view, cx| {
6309 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6310 view.fold(&Fold, cx);
6311 assert_eq!(
6312 view.display_text(cx),
6313 "
6314 impl Foo {
6315 // Hello!
6316
6317 fn a() {
6318 1
6319 }
6320
6321 fn b() {…
6322 }
6323
6324 fn c() {…
6325 }
6326 }
6327 "
6328 .unindent(),
6329 );
6330
6331 view.fold(&Fold, cx);
6332 assert_eq!(
6333 view.display_text(cx),
6334 "
6335 impl Foo {…
6336 }
6337 "
6338 .unindent(),
6339 );
6340
6341 view.unfold(&Unfold, cx);
6342 assert_eq!(
6343 view.display_text(cx),
6344 "
6345 impl Foo {
6346 // Hello!
6347
6348 fn a() {
6349 1
6350 }
6351
6352 fn b() {…
6353 }
6354
6355 fn c() {…
6356 }
6357 }
6358 "
6359 .unindent(),
6360 );
6361
6362 view.unfold(&Unfold, cx);
6363 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6364 });
6365 }
6366
6367 #[gpui::test]
6368 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6369 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6370 let settings = Settings::test(&cx);
6371 let (_, view) = cx.add_window(Default::default(), |cx| {
6372 build_editor(buffer.clone(), settings, cx)
6373 });
6374
6375 buffer.update(cx, |buffer, cx| {
6376 buffer.edit(
6377 vec![
6378 Point::new(1, 0)..Point::new(1, 0),
6379 Point::new(1, 1)..Point::new(1, 1),
6380 ],
6381 "\t",
6382 cx,
6383 );
6384 });
6385
6386 view.update(cx, |view, cx| {
6387 assert_eq!(
6388 view.selected_display_ranges(cx),
6389 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6390 );
6391
6392 view.move_down(&MoveDown, cx);
6393 assert_eq!(
6394 view.selected_display_ranges(cx),
6395 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6396 );
6397
6398 view.move_right(&MoveRight, cx);
6399 assert_eq!(
6400 view.selected_display_ranges(cx),
6401 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6402 );
6403
6404 view.move_left(&MoveLeft, cx);
6405 assert_eq!(
6406 view.selected_display_ranges(cx),
6407 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6408 );
6409
6410 view.move_up(&MoveUp, cx);
6411 assert_eq!(
6412 view.selected_display_ranges(cx),
6413 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6414 );
6415
6416 view.move_to_end(&MoveToEnd, cx);
6417 assert_eq!(
6418 view.selected_display_ranges(cx),
6419 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6420 );
6421
6422 view.move_to_beginning(&MoveToBeginning, cx);
6423 assert_eq!(
6424 view.selected_display_ranges(cx),
6425 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6426 );
6427
6428 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6429 view.select_to_beginning(&SelectToBeginning, cx);
6430 assert_eq!(
6431 view.selected_display_ranges(cx),
6432 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6433 );
6434
6435 view.select_to_end(&SelectToEnd, cx);
6436 assert_eq!(
6437 view.selected_display_ranges(cx),
6438 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6439 );
6440 });
6441 }
6442
6443 #[gpui::test]
6444 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6445 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6446 let settings = Settings::test(&cx);
6447 let (_, view) = cx.add_window(Default::default(), |cx| {
6448 build_editor(buffer.clone(), settings, cx)
6449 });
6450
6451 assert_eq!('ⓐ'.len_utf8(), 3);
6452 assert_eq!('α'.len_utf8(), 2);
6453
6454 view.update(cx, |view, cx| {
6455 view.fold_ranges(
6456 vec![
6457 Point::new(0, 6)..Point::new(0, 12),
6458 Point::new(1, 2)..Point::new(1, 4),
6459 Point::new(2, 4)..Point::new(2, 8),
6460 ],
6461 cx,
6462 );
6463 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6464
6465 view.move_right(&MoveRight, cx);
6466 assert_eq!(
6467 view.selected_display_ranges(cx),
6468 &[empty_range(0, "ⓐ".len())]
6469 );
6470 view.move_right(&MoveRight, cx);
6471 assert_eq!(
6472 view.selected_display_ranges(cx),
6473 &[empty_range(0, "ⓐⓑ".len())]
6474 );
6475 view.move_right(&MoveRight, cx);
6476 assert_eq!(
6477 view.selected_display_ranges(cx),
6478 &[empty_range(0, "ⓐⓑ…".len())]
6479 );
6480
6481 view.move_down(&MoveDown, cx);
6482 assert_eq!(
6483 view.selected_display_ranges(cx),
6484 &[empty_range(1, "ab…".len())]
6485 );
6486 view.move_left(&MoveLeft, cx);
6487 assert_eq!(
6488 view.selected_display_ranges(cx),
6489 &[empty_range(1, "ab".len())]
6490 );
6491 view.move_left(&MoveLeft, cx);
6492 assert_eq!(
6493 view.selected_display_ranges(cx),
6494 &[empty_range(1, "a".len())]
6495 );
6496
6497 view.move_down(&MoveDown, cx);
6498 assert_eq!(
6499 view.selected_display_ranges(cx),
6500 &[empty_range(2, "α".len())]
6501 );
6502 view.move_right(&MoveRight, cx);
6503 assert_eq!(
6504 view.selected_display_ranges(cx),
6505 &[empty_range(2, "αβ".len())]
6506 );
6507 view.move_right(&MoveRight, cx);
6508 assert_eq!(
6509 view.selected_display_ranges(cx),
6510 &[empty_range(2, "αβ…".len())]
6511 );
6512 view.move_right(&MoveRight, cx);
6513 assert_eq!(
6514 view.selected_display_ranges(cx),
6515 &[empty_range(2, "αβ…ε".len())]
6516 );
6517
6518 view.move_up(&MoveUp, cx);
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 &[empty_range(1, "ab…e".len())]
6522 );
6523 view.move_up(&MoveUp, cx);
6524 assert_eq!(
6525 view.selected_display_ranges(cx),
6526 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6527 );
6528 view.move_left(&MoveLeft, cx);
6529 assert_eq!(
6530 view.selected_display_ranges(cx),
6531 &[empty_range(0, "ⓐⓑ…".len())]
6532 );
6533 view.move_left(&MoveLeft, cx);
6534 assert_eq!(
6535 view.selected_display_ranges(cx),
6536 &[empty_range(0, "ⓐⓑ".len())]
6537 );
6538 view.move_left(&MoveLeft, cx);
6539 assert_eq!(
6540 view.selected_display_ranges(cx),
6541 &[empty_range(0, "ⓐ".len())]
6542 );
6543 });
6544 }
6545
6546 #[gpui::test]
6547 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6548 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6549 let settings = Settings::test(&cx);
6550 let (_, view) = cx.add_window(Default::default(), |cx| {
6551 build_editor(buffer.clone(), settings, cx)
6552 });
6553 view.update(cx, |view, cx| {
6554 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6555 view.move_down(&MoveDown, cx);
6556 assert_eq!(
6557 view.selected_display_ranges(cx),
6558 &[empty_range(1, "abcd".len())]
6559 );
6560
6561 view.move_down(&MoveDown, cx);
6562 assert_eq!(
6563 view.selected_display_ranges(cx),
6564 &[empty_range(2, "αβγ".len())]
6565 );
6566
6567 view.move_down(&MoveDown, cx);
6568 assert_eq!(
6569 view.selected_display_ranges(cx),
6570 &[empty_range(3, "abcd".len())]
6571 );
6572
6573 view.move_down(&MoveDown, cx);
6574 assert_eq!(
6575 view.selected_display_ranges(cx),
6576 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6577 );
6578
6579 view.move_up(&MoveUp, cx);
6580 assert_eq!(
6581 view.selected_display_ranges(cx),
6582 &[empty_range(3, "abcd".len())]
6583 );
6584
6585 view.move_up(&MoveUp, cx);
6586 assert_eq!(
6587 view.selected_display_ranges(cx),
6588 &[empty_range(2, "αβγ".len())]
6589 );
6590 });
6591 }
6592
6593 #[gpui::test]
6594 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6595 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6596 let settings = Settings::test(&cx);
6597 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6598 view.update(cx, |view, cx| {
6599 view.select_display_ranges(
6600 &[
6601 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6602 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6603 ],
6604 cx,
6605 );
6606 });
6607
6608 view.update(cx, |view, cx| {
6609 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6610 assert_eq!(
6611 view.selected_display_ranges(cx),
6612 &[
6613 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6614 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6615 ]
6616 );
6617 });
6618
6619 view.update(cx, |view, cx| {
6620 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6621 assert_eq!(
6622 view.selected_display_ranges(cx),
6623 &[
6624 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6625 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6626 ]
6627 );
6628 });
6629
6630 view.update(cx, |view, cx| {
6631 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6632 assert_eq!(
6633 view.selected_display_ranges(cx),
6634 &[
6635 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6636 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6637 ]
6638 );
6639 });
6640
6641 view.update(cx, |view, cx| {
6642 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6643 assert_eq!(
6644 view.selected_display_ranges(cx),
6645 &[
6646 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6647 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6648 ]
6649 );
6650 });
6651
6652 // Moving to the end of line again is a no-op.
6653 view.update(cx, |view, cx| {
6654 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6655 assert_eq!(
6656 view.selected_display_ranges(cx),
6657 &[
6658 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6659 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6660 ]
6661 );
6662 });
6663
6664 view.update(cx, |view, cx| {
6665 view.move_left(&MoveLeft, cx);
6666 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6667 assert_eq!(
6668 view.selected_display_ranges(cx),
6669 &[
6670 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6671 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6672 ]
6673 );
6674 });
6675
6676 view.update(cx, |view, cx| {
6677 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6678 assert_eq!(
6679 view.selected_display_ranges(cx),
6680 &[
6681 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6682 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6683 ]
6684 );
6685 });
6686
6687 view.update(cx, |view, cx| {
6688 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6689 assert_eq!(
6690 view.selected_display_ranges(cx),
6691 &[
6692 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6693 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6694 ]
6695 );
6696 });
6697
6698 view.update(cx, |view, cx| {
6699 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6700 assert_eq!(
6701 view.selected_display_ranges(cx),
6702 &[
6703 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6704 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6705 ]
6706 );
6707 });
6708
6709 view.update(cx, |view, cx| {
6710 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6711 assert_eq!(view.display_text(cx), "ab\n de");
6712 assert_eq!(
6713 view.selected_display_ranges(cx),
6714 &[
6715 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6716 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6717 ]
6718 );
6719 });
6720
6721 view.update(cx, |view, cx| {
6722 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6723 assert_eq!(view.display_text(cx), "\n");
6724 assert_eq!(
6725 view.selected_display_ranges(cx),
6726 &[
6727 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6728 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6729 ]
6730 );
6731 });
6732 }
6733
6734 #[gpui::test]
6735 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6736 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6737 let settings = Settings::test(&cx);
6738 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6739 view.update(cx, |view, cx| {
6740 view.select_display_ranges(
6741 &[
6742 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6743 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6744 ],
6745 cx,
6746 );
6747 });
6748
6749 view.update(cx, |view, cx| {
6750 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6751 assert_eq!(
6752 view.selected_display_ranges(cx),
6753 &[
6754 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6755 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6756 ]
6757 );
6758 });
6759
6760 view.update(cx, |view, cx| {
6761 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6762 assert_eq!(
6763 view.selected_display_ranges(cx),
6764 &[
6765 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6766 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6767 ]
6768 );
6769 });
6770
6771 view.update(cx, |view, cx| {
6772 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6773 assert_eq!(
6774 view.selected_display_ranges(cx),
6775 &[
6776 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6777 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6778 ]
6779 );
6780 });
6781
6782 view.update(cx, |view, cx| {
6783 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6784 assert_eq!(
6785 view.selected_display_ranges(cx),
6786 &[
6787 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6788 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6789 ]
6790 );
6791 });
6792
6793 view.update(cx, |view, cx| {
6794 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6795 assert_eq!(
6796 view.selected_display_ranges(cx),
6797 &[
6798 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6799 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6800 ]
6801 );
6802 });
6803
6804 view.update(cx, |view, cx| {
6805 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6806 assert_eq!(
6807 view.selected_display_ranges(cx),
6808 &[
6809 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6810 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6811 ]
6812 );
6813 });
6814
6815 view.update(cx, |view, cx| {
6816 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 &[
6820 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6821 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6822 ]
6823 );
6824 });
6825
6826 view.update(cx, |view, cx| {
6827 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6828 assert_eq!(
6829 view.selected_display_ranges(cx),
6830 &[
6831 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6832 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6833 ]
6834 );
6835 });
6836
6837 view.update(cx, |view, cx| {
6838 view.move_right(&MoveRight, cx);
6839 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[
6843 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6844 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6845 ]
6846 );
6847 });
6848
6849 view.update(cx, |view, cx| {
6850 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6851 assert_eq!(
6852 view.selected_display_ranges(cx),
6853 &[
6854 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6855 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6856 ]
6857 );
6858 });
6859
6860 view.update(cx, |view, cx| {
6861 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 &[
6865 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6866 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6867 ]
6868 );
6869 });
6870 }
6871
6872 #[gpui::test]
6873 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6874 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6875 let settings = Settings::test(&cx);
6876 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6877
6878 view.update(cx, |view, cx| {
6879 view.set_wrap_width(Some(140.), cx);
6880 assert_eq!(
6881 view.display_text(cx),
6882 "use one::{\n two::three::\n four::five\n};"
6883 );
6884
6885 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6886
6887 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6888 assert_eq!(
6889 view.selected_display_ranges(cx),
6890 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6891 );
6892
6893 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6894 assert_eq!(
6895 view.selected_display_ranges(cx),
6896 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6897 );
6898
6899 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6900 assert_eq!(
6901 view.selected_display_ranges(cx),
6902 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6903 );
6904
6905 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6906 assert_eq!(
6907 view.selected_display_ranges(cx),
6908 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6909 );
6910
6911 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6912 assert_eq!(
6913 view.selected_display_ranges(cx),
6914 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6915 );
6916
6917 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6918 assert_eq!(
6919 view.selected_display_ranges(cx),
6920 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6921 );
6922 });
6923 }
6924
6925 #[gpui::test]
6926 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6927 let buffer = MultiBuffer::build_simple("one two three four", cx);
6928 let settings = Settings::test(&cx);
6929 let (_, view) = cx.add_window(Default::default(), |cx| {
6930 build_editor(buffer.clone(), settings, cx)
6931 });
6932
6933 view.update(cx, |view, cx| {
6934 view.select_display_ranges(
6935 &[
6936 // an empty selection - the preceding word fragment is deleted
6937 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6938 // characters selected - they are deleted
6939 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6940 ],
6941 cx,
6942 );
6943 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6944 });
6945
6946 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6947
6948 view.update(cx, |view, cx| {
6949 view.select_display_ranges(
6950 &[
6951 // an empty selection - the following word fragment is deleted
6952 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6953 // characters selected - they are deleted
6954 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6955 ],
6956 cx,
6957 );
6958 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6959 });
6960
6961 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6962 }
6963
6964 #[gpui::test]
6965 fn test_newline(cx: &mut gpui::MutableAppContext) {
6966 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6967 let settings = Settings::test(&cx);
6968 let (_, view) = cx.add_window(Default::default(), |cx| {
6969 build_editor(buffer.clone(), settings, cx)
6970 });
6971
6972 view.update(cx, |view, cx| {
6973 view.select_display_ranges(
6974 &[
6975 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6976 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6977 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6978 ],
6979 cx,
6980 );
6981
6982 view.newline(&Newline, cx);
6983 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6984 });
6985 }
6986
6987 #[gpui::test]
6988 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6989 let buffer = MultiBuffer::build_simple(
6990 "
6991 a
6992 b(
6993 X
6994 )
6995 c(
6996 X
6997 )
6998 "
6999 .unindent()
7000 .as_str(),
7001 cx,
7002 );
7003
7004 let settings = Settings::test(&cx);
7005 let (_, editor) = cx.add_window(Default::default(), |cx| {
7006 let mut editor = build_editor(buffer.clone(), settings, cx);
7007 editor.select_ranges(
7008 [
7009 Point::new(2, 4)..Point::new(2, 5),
7010 Point::new(5, 4)..Point::new(5, 5),
7011 ],
7012 None,
7013 cx,
7014 );
7015 editor
7016 });
7017
7018 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7019 buffer.update(cx, |buffer, cx| {
7020 buffer.edit(
7021 [
7022 Point::new(1, 2)..Point::new(3, 0),
7023 Point::new(4, 2)..Point::new(6, 0),
7024 ],
7025 "",
7026 cx,
7027 );
7028 assert_eq!(
7029 buffer.read(cx).text(),
7030 "
7031 a
7032 b()
7033 c()
7034 "
7035 .unindent()
7036 );
7037 });
7038
7039 editor.update(cx, |editor, cx| {
7040 assert_eq!(
7041 editor.selected_ranges(cx),
7042 &[
7043 Point::new(1, 2)..Point::new(1, 2),
7044 Point::new(2, 2)..Point::new(2, 2),
7045 ],
7046 );
7047
7048 editor.newline(&Newline, cx);
7049 assert_eq!(
7050 editor.text(cx),
7051 "
7052 a
7053 b(
7054 )
7055 c(
7056 )
7057 "
7058 .unindent()
7059 );
7060
7061 // The selections are moved after the inserted newlines
7062 assert_eq!(
7063 editor.selected_ranges(cx),
7064 &[
7065 Point::new(2, 0)..Point::new(2, 0),
7066 Point::new(4, 0)..Point::new(4, 0),
7067 ],
7068 );
7069 });
7070 }
7071
7072 #[gpui::test]
7073 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7074 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7075
7076 let settings = Settings::test(&cx);
7077 let (_, editor) = cx.add_window(Default::default(), |cx| {
7078 let mut editor = build_editor(buffer.clone(), settings, cx);
7079 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7080 editor
7081 });
7082
7083 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7084 buffer.update(cx, |buffer, cx| {
7085 buffer.edit([2..5, 10..13, 18..21], "", cx);
7086 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7087 });
7088
7089 editor.update(cx, |editor, cx| {
7090 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7091
7092 editor.insert("Z", cx);
7093 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7094
7095 // The selections are moved after the inserted characters
7096 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7097 });
7098 }
7099
7100 #[gpui::test]
7101 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7102 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7103 let settings = Settings::test(&cx);
7104 let (_, view) = cx.add_window(Default::default(), |cx| {
7105 build_editor(buffer.clone(), settings, cx)
7106 });
7107
7108 view.update(cx, |view, cx| {
7109 // two selections on the same line
7110 view.select_display_ranges(
7111 &[
7112 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7113 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7114 ],
7115 cx,
7116 );
7117
7118 // indent from mid-tabstop to full tabstop
7119 view.tab(&Tab, cx);
7120 assert_eq!(view.text(cx), " one two\nthree\n four");
7121 assert_eq!(
7122 view.selected_display_ranges(cx),
7123 &[
7124 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7125 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7126 ]
7127 );
7128
7129 // outdent from 1 tabstop to 0 tabstops
7130 view.outdent(&Outdent, cx);
7131 assert_eq!(view.text(cx), "one two\nthree\n four");
7132 assert_eq!(
7133 view.selected_display_ranges(cx),
7134 &[
7135 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7136 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7137 ]
7138 );
7139
7140 // select across line ending
7141 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7142
7143 // indent and outdent affect only the preceding line
7144 view.tab(&Tab, cx);
7145 assert_eq!(view.text(cx), "one two\n three\n four");
7146 assert_eq!(
7147 view.selected_display_ranges(cx),
7148 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7149 );
7150 view.outdent(&Outdent, cx);
7151 assert_eq!(view.text(cx), "one two\nthree\n four");
7152 assert_eq!(
7153 view.selected_display_ranges(cx),
7154 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7155 );
7156
7157 // Ensure that indenting/outdenting works when the cursor is at column 0.
7158 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7159 view.tab(&Tab, cx);
7160 assert_eq!(view.text(cx), "one two\n three\n four");
7161 assert_eq!(
7162 view.selected_display_ranges(cx),
7163 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7164 );
7165
7166 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7167 view.outdent(&Outdent, cx);
7168 assert_eq!(view.text(cx), "one two\nthree\n four");
7169 assert_eq!(
7170 view.selected_display_ranges(cx),
7171 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7172 );
7173 });
7174 }
7175
7176 #[gpui::test]
7177 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7178 let settings = Settings::test(&cx);
7179 let (_, view) = cx.add_window(Default::default(), |cx| {
7180 build_editor(MultiBuffer::build_simple("", cx), settings, cx)
7181 });
7182
7183 view.update(cx, |view, cx| {
7184 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7185 view.select_display_ranges(
7186 &[
7187 // an empty selection - the preceding character is deleted
7188 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7189 // one character selected - it is deleted
7190 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7191 // a line suffix selected - it is deleted
7192 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7193 ],
7194 cx,
7195 );
7196 view.backspace(&Backspace, cx);
7197 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7198
7199 view.set_text(" one\n two\n three\n four", cx);
7200 view.select_display_ranges(
7201 &[
7202 // cursors at the the end of leading indent - last indent is deleted
7203 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7204 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7205 // cursors inside leading indent - overlapping indent deletions are coalesced
7206 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7207 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7208 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7209 // cursor at the beginning of a line - preceding newline is deleted
7210 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7211 // selection inside leading indent - only the selected character is deleted
7212 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7213 ],
7214 cx,
7215 );
7216 view.backspace(&Backspace, cx);
7217 assert_eq!(view.text(cx), "one\n two\n three four");
7218 });
7219 }
7220
7221 #[gpui::test]
7222 fn test_delete(cx: &mut gpui::MutableAppContext) {
7223 let buffer =
7224 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7225 let settings = Settings::test(&cx);
7226 let (_, view) = cx.add_window(Default::default(), |cx| {
7227 build_editor(buffer.clone(), settings, cx)
7228 });
7229
7230 view.update(cx, |view, cx| {
7231 view.select_display_ranges(
7232 &[
7233 // an empty selection - the following character is deleted
7234 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7235 // one character selected - it is deleted
7236 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7237 // a line suffix selected - it is deleted
7238 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7239 ],
7240 cx,
7241 );
7242 view.delete(&Delete, cx);
7243 });
7244
7245 assert_eq!(
7246 buffer.read(cx).read(cx).text(),
7247 "on two three\nfou five six\nseven ten\n"
7248 );
7249 }
7250
7251 #[gpui::test]
7252 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7253 let settings = Settings::test(&cx);
7254 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7255 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7256 view.update(cx, |view, cx| {
7257 view.select_display_ranges(
7258 &[
7259 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7260 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7261 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7262 ],
7263 cx,
7264 );
7265 view.delete_line(&DeleteLine, cx);
7266 assert_eq!(view.display_text(cx), "ghi");
7267 assert_eq!(
7268 view.selected_display_ranges(cx),
7269 vec![
7270 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7271 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7272 ]
7273 );
7274 });
7275
7276 let settings = Settings::test(&cx);
7277 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7278 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7279 view.update(cx, |view, cx| {
7280 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7281 view.delete_line(&DeleteLine, cx);
7282 assert_eq!(view.display_text(cx), "ghi\n");
7283 assert_eq!(
7284 view.selected_display_ranges(cx),
7285 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7286 );
7287 });
7288 }
7289
7290 #[gpui::test]
7291 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7292 let settings = Settings::test(&cx);
7293 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7294 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7295 view.update(cx, |view, cx| {
7296 view.select_display_ranges(
7297 &[
7298 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7299 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7300 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7301 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7302 ],
7303 cx,
7304 );
7305 view.duplicate_line(&DuplicateLine, cx);
7306 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7307 assert_eq!(
7308 view.selected_display_ranges(cx),
7309 vec![
7310 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7311 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7312 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7313 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7314 ]
7315 );
7316 });
7317
7318 let settings = Settings::test(&cx);
7319 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7320 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7321 view.update(cx, |view, cx| {
7322 view.select_display_ranges(
7323 &[
7324 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7325 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7326 ],
7327 cx,
7328 );
7329 view.duplicate_line(&DuplicateLine, cx);
7330 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7331 assert_eq!(
7332 view.selected_display_ranges(cx),
7333 vec![
7334 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7335 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7336 ]
7337 );
7338 });
7339 }
7340
7341 #[gpui::test]
7342 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7343 let settings = Settings::test(&cx);
7344 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7345 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7346 view.update(cx, |view, cx| {
7347 view.fold_ranges(
7348 vec![
7349 Point::new(0, 2)..Point::new(1, 2),
7350 Point::new(2, 3)..Point::new(4, 1),
7351 Point::new(7, 0)..Point::new(8, 4),
7352 ],
7353 cx,
7354 );
7355 view.select_display_ranges(
7356 &[
7357 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7358 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7359 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7360 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7361 ],
7362 cx,
7363 );
7364 assert_eq!(
7365 view.display_text(cx),
7366 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7367 );
7368
7369 view.move_line_up(&MoveLineUp, cx);
7370 assert_eq!(
7371 view.display_text(cx),
7372 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7373 );
7374 assert_eq!(
7375 view.selected_display_ranges(cx),
7376 vec![
7377 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7378 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7379 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7380 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7381 ]
7382 );
7383 });
7384
7385 view.update(cx, |view, cx| {
7386 view.move_line_down(&MoveLineDown, cx);
7387 assert_eq!(
7388 view.display_text(cx),
7389 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7390 );
7391 assert_eq!(
7392 view.selected_display_ranges(cx),
7393 vec![
7394 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7395 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7396 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7397 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7398 ]
7399 );
7400 });
7401
7402 view.update(cx, |view, cx| {
7403 view.move_line_down(&MoveLineDown, cx);
7404 assert_eq!(
7405 view.display_text(cx),
7406 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7407 );
7408 assert_eq!(
7409 view.selected_display_ranges(cx),
7410 vec![
7411 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7412 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7413 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7414 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7415 ]
7416 );
7417 });
7418
7419 view.update(cx, |view, cx| {
7420 view.move_line_up(&MoveLineUp, cx);
7421 assert_eq!(
7422 view.display_text(cx),
7423 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7424 );
7425 assert_eq!(
7426 view.selected_display_ranges(cx),
7427 vec![
7428 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7429 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7430 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7431 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7432 ]
7433 );
7434 });
7435 }
7436
7437 #[gpui::test]
7438 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7439 let settings = Settings::test(&cx);
7440 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7441 let snapshot = buffer.read(cx).snapshot(cx);
7442 let (_, editor) =
7443 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7444 editor.update(cx, |editor, cx| {
7445 editor.insert_blocks(
7446 [BlockProperties {
7447 position: snapshot.anchor_after(Point::new(2, 0)),
7448 disposition: BlockDisposition::Below,
7449 height: 1,
7450 render: Arc::new(|_| Empty::new().boxed()),
7451 }],
7452 cx,
7453 );
7454 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7455 editor.move_line_down(&MoveLineDown, cx);
7456 });
7457 }
7458
7459 #[gpui::test]
7460 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7461 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7462 let settings = Settings::test(&cx);
7463 let view = cx
7464 .add_window(Default::default(), |cx| {
7465 build_editor(buffer.clone(), settings, cx)
7466 })
7467 .1;
7468
7469 // Cut with three selections. Clipboard text is divided into three slices.
7470 view.update(cx, |view, cx| {
7471 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7472 view.cut(&Cut, cx);
7473 assert_eq!(view.display_text(cx), "two four six ");
7474 });
7475
7476 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7477 view.update(cx, |view, cx| {
7478 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7479 view.paste(&Paste, cx);
7480 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7481 assert_eq!(
7482 view.selected_display_ranges(cx),
7483 &[
7484 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7485 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7486 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7487 ]
7488 );
7489 });
7490
7491 // Paste again but with only two cursors. Since the number of cursors doesn't
7492 // match the number of slices in the clipboard, the entire clipboard text
7493 // is pasted at each cursor.
7494 view.update(cx, |view, cx| {
7495 view.select_ranges(vec![0..0, 31..31], None, cx);
7496 view.handle_input(&Input("( ".into()), cx);
7497 view.paste(&Paste, cx);
7498 view.handle_input(&Input(") ".into()), cx);
7499 assert_eq!(
7500 view.display_text(cx),
7501 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7502 );
7503 });
7504
7505 view.update(cx, |view, cx| {
7506 view.select_ranges(vec![0..0], None, cx);
7507 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7508 assert_eq!(
7509 view.display_text(cx),
7510 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7511 );
7512 });
7513
7514 // Cut with three selections, one of which is full-line.
7515 view.update(cx, |view, cx| {
7516 view.select_display_ranges(
7517 &[
7518 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7519 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7520 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7521 ],
7522 cx,
7523 );
7524 view.cut(&Cut, cx);
7525 assert_eq!(
7526 view.display_text(cx),
7527 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7528 );
7529 });
7530
7531 // Paste with three selections, noticing how the copied selection that was full-line
7532 // gets inserted before the second cursor.
7533 view.update(cx, |view, cx| {
7534 view.select_display_ranges(
7535 &[
7536 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7537 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7538 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7539 ],
7540 cx,
7541 );
7542 view.paste(&Paste, cx);
7543 assert_eq!(
7544 view.display_text(cx),
7545 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7546 );
7547 assert_eq!(
7548 view.selected_display_ranges(cx),
7549 &[
7550 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7551 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7552 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7553 ]
7554 );
7555 });
7556
7557 // Copy with a single cursor only, which writes the whole line into the clipboard.
7558 view.update(cx, |view, cx| {
7559 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7560 view.copy(&Copy, cx);
7561 });
7562
7563 // Paste with three selections, noticing how the copied full-line selection is inserted
7564 // before the empty selections but replaces the selection that is non-empty.
7565 view.update(cx, |view, cx| {
7566 view.select_display_ranges(
7567 &[
7568 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7569 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7570 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7571 ],
7572 cx,
7573 );
7574 view.paste(&Paste, cx);
7575 assert_eq!(
7576 view.display_text(cx),
7577 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7578 );
7579 assert_eq!(
7580 view.selected_display_ranges(cx),
7581 &[
7582 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7583 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7584 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7585 ]
7586 );
7587 });
7588 }
7589
7590 #[gpui::test]
7591 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7592 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7593 let settings = Settings::test(&cx);
7594 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7595 view.update(cx, |view, cx| {
7596 view.select_all(&SelectAll, cx);
7597 assert_eq!(
7598 view.selected_display_ranges(cx),
7599 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7600 );
7601 });
7602 }
7603
7604 #[gpui::test]
7605 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7606 let settings = Settings::test(&cx);
7607 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7608 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7609 view.update(cx, |view, cx| {
7610 view.select_display_ranges(
7611 &[
7612 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7613 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7614 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7615 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7616 ],
7617 cx,
7618 );
7619 view.select_line(&SelectLine, cx);
7620 assert_eq!(
7621 view.selected_display_ranges(cx),
7622 vec![
7623 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7624 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7625 ]
7626 );
7627 });
7628
7629 view.update(cx, |view, cx| {
7630 view.select_line(&SelectLine, cx);
7631 assert_eq!(
7632 view.selected_display_ranges(cx),
7633 vec![
7634 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7635 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7636 ]
7637 );
7638 });
7639
7640 view.update(cx, |view, cx| {
7641 view.select_line(&SelectLine, cx);
7642 assert_eq!(
7643 view.selected_display_ranges(cx),
7644 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7645 );
7646 });
7647 }
7648
7649 #[gpui::test]
7650 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7651 let settings = Settings::test(&cx);
7652 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7653 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7654 view.update(cx, |view, cx| {
7655 view.fold_ranges(
7656 vec![
7657 Point::new(0, 2)..Point::new(1, 2),
7658 Point::new(2, 3)..Point::new(4, 1),
7659 Point::new(7, 0)..Point::new(8, 4),
7660 ],
7661 cx,
7662 );
7663 view.select_display_ranges(
7664 &[
7665 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7666 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7667 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7668 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7669 ],
7670 cx,
7671 );
7672 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7673 });
7674
7675 view.update(cx, |view, cx| {
7676 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7677 assert_eq!(
7678 view.display_text(cx),
7679 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7680 );
7681 assert_eq!(
7682 view.selected_display_ranges(cx),
7683 [
7684 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7685 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7686 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7687 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7688 ]
7689 );
7690 });
7691
7692 view.update(cx, |view, cx| {
7693 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7694 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7695 assert_eq!(
7696 view.display_text(cx),
7697 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7698 );
7699 assert_eq!(
7700 view.selected_display_ranges(cx),
7701 [
7702 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7703 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7704 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7705 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7706 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7707 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7708 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7709 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7710 ]
7711 );
7712 });
7713 }
7714
7715 #[gpui::test]
7716 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7717 let settings = Settings::test(&cx);
7718 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7719 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7720
7721 view.update(cx, |view, cx| {
7722 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7723 });
7724 view.update(cx, |view, cx| {
7725 view.add_selection_above(&AddSelectionAbove, cx);
7726 assert_eq!(
7727 view.selected_display_ranges(cx),
7728 vec![
7729 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7730 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7731 ]
7732 );
7733 });
7734
7735 view.update(cx, |view, cx| {
7736 view.add_selection_above(&AddSelectionAbove, cx);
7737 assert_eq!(
7738 view.selected_display_ranges(cx),
7739 vec![
7740 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7741 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7742 ]
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![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7751 );
7752 });
7753
7754 view.update(cx, |view, cx| {
7755 view.add_selection_below(&AddSelectionBelow, cx);
7756 assert_eq!(
7757 view.selected_display_ranges(cx),
7758 vec![
7759 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7760 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7761 ]
7762 );
7763 });
7764
7765 view.update(cx, |view, cx| {
7766 view.add_selection_below(&AddSelectionBelow, cx);
7767 assert_eq!(
7768 view.selected_display_ranges(cx),
7769 vec![
7770 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7771 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7772 ]
7773 );
7774 });
7775
7776 view.update(cx, |view, cx| {
7777 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7778 });
7779 view.update(cx, |view, cx| {
7780 view.add_selection_below(&AddSelectionBelow, cx);
7781 assert_eq!(
7782 view.selected_display_ranges(cx),
7783 vec![
7784 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7785 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7786 ]
7787 );
7788 });
7789
7790 view.update(cx, |view, cx| {
7791 view.add_selection_below(&AddSelectionBelow, cx);
7792 assert_eq!(
7793 view.selected_display_ranges(cx),
7794 vec![
7795 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7796 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7797 ]
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.add_selection_above(&AddSelectionAbove, cx);
7811 assert_eq!(
7812 view.selected_display_ranges(cx),
7813 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7814 );
7815 });
7816
7817 view.update(cx, |view, cx| {
7818 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7819 view.add_selection_below(&AddSelectionBelow, cx);
7820 assert_eq!(
7821 view.selected_display_ranges(cx),
7822 vec![
7823 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7824 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7825 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7826 ]
7827 );
7828 });
7829
7830 view.update(cx, |view, cx| {
7831 view.add_selection_below(&AddSelectionBelow, cx);
7832 assert_eq!(
7833 view.selected_display_ranges(cx),
7834 vec![
7835 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7836 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7837 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7838 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7839 ]
7840 );
7841 });
7842
7843 view.update(cx, |view, cx| {
7844 view.add_selection_above(&AddSelectionAbove, cx);
7845 assert_eq!(
7846 view.selected_display_ranges(cx),
7847 vec![
7848 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7849 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7850 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7851 ]
7852 );
7853 });
7854
7855 view.update(cx, |view, cx| {
7856 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7857 });
7858 view.update(cx, |view, cx| {
7859 view.add_selection_above(&AddSelectionAbove, cx);
7860 assert_eq!(
7861 view.selected_display_ranges(cx),
7862 vec![
7863 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7864 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7865 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7866 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7867 ]
7868 );
7869 });
7870
7871 view.update(cx, |view, cx| {
7872 view.add_selection_below(&AddSelectionBelow, cx);
7873 assert_eq!(
7874 view.selected_display_ranges(cx),
7875 vec![
7876 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7877 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7878 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7879 ]
7880 );
7881 });
7882 }
7883
7884 #[gpui::test]
7885 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7886 let settings = cx.read(Settings::test);
7887 let language = Arc::new(Language::new(
7888 LanguageConfig::default(),
7889 Some(tree_sitter_rust::language()),
7890 ));
7891
7892 let text = r#"
7893 use mod1::mod2::{mod3, mod4};
7894
7895 fn fn_1(param1: bool, param2: &str) {
7896 let var1 = "text";
7897 }
7898 "#
7899 .unindent();
7900
7901 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7902 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7903 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7904 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7905 .await;
7906
7907 view.update(cx, |view, cx| {
7908 view.select_display_ranges(
7909 &[
7910 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7911 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7912 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7913 ],
7914 cx,
7915 );
7916 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7917 });
7918 assert_eq!(
7919 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7920 &[
7921 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7922 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7923 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7924 ]
7925 );
7926
7927 view.update(cx, |view, cx| {
7928 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7929 });
7930 assert_eq!(
7931 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7932 &[
7933 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7934 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7935 ]
7936 );
7937
7938 view.update(cx, |view, cx| {
7939 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7940 });
7941 assert_eq!(
7942 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7943 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7944 );
7945
7946 // Trying to expand the selected syntax node one more time has no effect.
7947 view.update(cx, |view, cx| {
7948 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7949 });
7950 assert_eq!(
7951 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7952 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7953 );
7954
7955 view.update(cx, |view, cx| {
7956 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7957 });
7958 assert_eq!(
7959 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7960 &[
7961 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7962 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7963 ]
7964 );
7965
7966 view.update(cx, |view, cx| {
7967 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7968 });
7969 assert_eq!(
7970 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7971 &[
7972 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7973 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7974 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7975 ]
7976 );
7977
7978 view.update(cx, |view, cx| {
7979 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7980 });
7981 assert_eq!(
7982 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7983 &[
7984 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7985 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7986 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7987 ]
7988 );
7989
7990 // Trying to shrink the selected syntax node one more time has no effect.
7991 view.update(cx, |view, cx| {
7992 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7993 });
7994 assert_eq!(
7995 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7996 &[
7997 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7998 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7999 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8000 ]
8001 );
8002
8003 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8004 // a fold.
8005 view.update(cx, |view, cx| {
8006 view.fold_ranges(
8007 vec![
8008 Point::new(0, 21)..Point::new(0, 24),
8009 Point::new(3, 20)..Point::new(3, 22),
8010 ],
8011 cx,
8012 );
8013 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8014 });
8015 assert_eq!(
8016 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8017 &[
8018 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8019 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8020 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8021 ]
8022 );
8023 }
8024
8025 #[gpui::test]
8026 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8027 let settings = cx.read(Settings::test);
8028 let language = Arc::new(
8029 Language::new(
8030 LanguageConfig {
8031 brackets: vec![
8032 BracketPair {
8033 start: "{".to_string(),
8034 end: "}".to_string(),
8035 close: false,
8036 newline: true,
8037 },
8038 BracketPair {
8039 start: "(".to_string(),
8040 end: ")".to_string(),
8041 close: false,
8042 newline: true,
8043 },
8044 ],
8045 ..Default::default()
8046 },
8047 Some(tree_sitter_rust::language()),
8048 )
8049 .with_indents_query(
8050 r#"
8051 (_ "(" ")" @end) @indent
8052 (_ "{" "}" @end) @indent
8053 "#,
8054 )
8055 .unwrap(),
8056 );
8057
8058 let text = "fn a() {}";
8059
8060 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8061 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8062 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8063 editor
8064 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8065 .await;
8066
8067 editor.update(cx, |editor, cx| {
8068 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8069 editor.newline(&Newline, cx);
8070 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8071 assert_eq!(
8072 editor.selected_ranges(cx),
8073 &[
8074 Point::new(1, 4)..Point::new(1, 4),
8075 Point::new(3, 4)..Point::new(3, 4),
8076 Point::new(5, 0)..Point::new(5, 0)
8077 ]
8078 );
8079 });
8080 }
8081
8082 #[gpui::test]
8083 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8084 let settings = cx.read(Settings::test);
8085 let language = Arc::new(Language::new(
8086 LanguageConfig {
8087 brackets: vec![
8088 BracketPair {
8089 start: "{".to_string(),
8090 end: "}".to_string(),
8091 close: true,
8092 newline: true,
8093 },
8094 BracketPair {
8095 start: "/*".to_string(),
8096 end: " */".to_string(),
8097 close: true,
8098 newline: true,
8099 },
8100 ],
8101 ..Default::default()
8102 },
8103 Some(tree_sitter_rust::language()),
8104 ));
8105
8106 let text = r#"
8107 a
8108
8109 /
8110
8111 "#
8112 .unindent();
8113
8114 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8115 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8116 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8117 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8118 .await;
8119
8120 view.update(cx, |view, cx| {
8121 view.select_display_ranges(
8122 &[
8123 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8124 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8125 ],
8126 cx,
8127 );
8128 view.handle_input(&Input("{".to_string()), cx);
8129 view.handle_input(&Input("{".to_string()), cx);
8130 view.handle_input(&Input("{".to_string()), cx);
8131 assert_eq!(
8132 view.text(cx),
8133 "
8134 {{{}}}
8135 {{{}}}
8136 /
8137
8138 "
8139 .unindent()
8140 );
8141
8142 view.move_right(&MoveRight, cx);
8143 view.handle_input(&Input("}".to_string()), cx);
8144 view.handle_input(&Input("}".to_string()), cx);
8145 view.handle_input(&Input("}".to_string()), cx);
8146 assert_eq!(
8147 view.text(cx),
8148 "
8149 {{{}}}}
8150 {{{}}}}
8151 /
8152
8153 "
8154 .unindent()
8155 );
8156
8157 view.undo(&Undo, cx);
8158 view.handle_input(&Input("/".to_string()), cx);
8159 view.handle_input(&Input("*".to_string()), cx);
8160 assert_eq!(
8161 view.text(cx),
8162 "
8163 /* */
8164 /* */
8165 /
8166
8167 "
8168 .unindent()
8169 );
8170
8171 view.undo(&Undo, cx);
8172 view.select_display_ranges(
8173 &[
8174 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8175 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8176 ],
8177 cx,
8178 );
8179 view.handle_input(&Input("*".to_string()), cx);
8180 assert_eq!(
8181 view.text(cx),
8182 "
8183 a
8184
8185 /*
8186 *
8187 "
8188 .unindent()
8189 );
8190
8191 view.finalize_last_transaction(cx);
8192 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8193 view.handle_input(&Input("{".to_string()), cx);
8194 assert_eq!(
8195 view.text(cx),
8196 "
8197 {a
8198
8199 /*
8200 *
8201 "
8202 .unindent()
8203 );
8204
8205 view.undo(&Undo, cx);
8206 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8207 view.handle_input(&Input("{".to_string()), cx);
8208 assert_eq!(
8209 view.text(cx),
8210 "
8211 {a}
8212
8213 /*
8214 *
8215 "
8216 .unindent()
8217 );
8218 assert_eq!(
8219 view.selected_display_ranges(cx),
8220 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8221 );
8222 });
8223 }
8224
8225 #[gpui::test]
8226 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8227 let settings = cx.read(Settings::test);
8228
8229 let text = "
8230 a. b
8231 a. b
8232 a. b
8233 "
8234 .unindent();
8235 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8236 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8237
8238 editor.update(cx, |editor, cx| {
8239 let buffer = &editor.snapshot(cx).buffer_snapshot;
8240 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8241 let insertion_ranges = [
8242 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8243 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8244 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8245 ];
8246
8247 editor
8248 .insert_snippet(&insertion_ranges, snippet, cx)
8249 .unwrap();
8250 assert_eq!(
8251 editor.text(cx),
8252 "
8253 a.f(one, two, three) b
8254 a.f(one, two, three) b
8255 a.f(one, two, three) b
8256 "
8257 .unindent()
8258 );
8259 assert_eq!(
8260 editor.selected_ranges::<Point>(cx),
8261 &[
8262 Point::new(0, 4)..Point::new(0, 7),
8263 Point::new(0, 14)..Point::new(0, 19),
8264 Point::new(1, 4)..Point::new(1, 7),
8265 Point::new(1, 14)..Point::new(1, 19),
8266 Point::new(2, 4)..Point::new(2, 7),
8267 Point::new(2, 14)..Point::new(2, 19),
8268 ]
8269 );
8270
8271 // Can't move earlier than the first tab stop
8272 editor.move_to_prev_snippet_tabstop(cx);
8273 assert_eq!(
8274 editor.selected_ranges::<Point>(cx),
8275 &[
8276 Point::new(0, 4)..Point::new(0, 7),
8277 Point::new(0, 14)..Point::new(0, 19),
8278 Point::new(1, 4)..Point::new(1, 7),
8279 Point::new(1, 14)..Point::new(1, 19),
8280 Point::new(2, 4)..Point::new(2, 7),
8281 Point::new(2, 14)..Point::new(2, 19),
8282 ]
8283 );
8284
8285 assert!(editor.move_to_next_snippet_tabstop(cx));
8286 assert_eq!(
8287 editor.selected_ranges::<Point>(cx),
8288 &[
8289 Point::new(0, 9)..Point::new(0, 12),
8290 Point::new(1, 9)..Point::new(1, 12),
8291 Point::new(2, 9)..Point::new(2, 12)
8292 ]
8293 );
8294
8295 editor.move_to_prev_snippet_tabstop(cx);
8296 assert_eq!(
8297 editor.selected_ranges::<Point>(cx),
8298 &[
8299 Point::new(0, 4)..Point::new(0, 7),
8300 Point::new(0, 14)..Point::new(0, 19),
8301 Point::new(1, 4)..Point::new(1, 7),
8302 Point::new(1, 14)..Point::new(1, 19),
8303 Point::new(2, 4)..Point::new(2, 7),
8304 Point::new(2, 14)..Point::new(2, 19),
8305 ]
8306 );
8307
8308 assert!(editor.move_to_next_snippet_tabstop(cx));
8309 assert!(editor.move_to_next_snippet_tabstop(cx));
8310 assert_eq!(
8311 editor.selected_ranges::<Point>(cx),
8312 &[
8313 Point::new(0, 20)..Point::new(0, 20),
8314 Point::new(1, 20)..Point::new(1, 20),
8315 Point::new(2, 20)..Point::new(2, 20)
8316 ]
8317 );
8318
8319 // As soon as the last tab stop is reached, snippet state is gone
8320 editor.move_to_prev_snippet_tabstop(cx);
8321 assert_eq!(
8322 editor.selected_ranges::<Point>(cx),
8323 &[
8324 Point::new(0, 20)..Point::new(0, 20),
8325 Point::new(1, 20)..Point::new(1, 20),
8326 Point::new(2, 20)..Point::new(2, 20)
8327 ]
8328 );
8329 });
8330 }
8331
8332 #[gpui::test]
8333 async fn test_completion(cx: &mut gpui::TestAppContext) {
8334 let settings = cx.read(Settings::test);
8335
8336 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8337 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8338 completion_provider: Some(lsp::CompletionOptions {
8339 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8340 ..Default::default()
8341 }),
8342 ..Default::default()
8343 });
8344 let language = Arc::new(Language::new(
8345 LanguageConfig {
8346 name: "Rust".into(),
8347 path_suffixes: vec!["rs".to_string()],
8348 language_server: Some(language_server_config),
8349 ..Default::default()
8350 },
8351 Some(tree_sitter_rust::language()),
8352 ));
8353
8354 let text = "
8355 one
8356 two
8357 three
8358 "
8359 .unindent();
8360
8361 let fs = FakeFs::new(cx.background().clone());
8362 fs.insert_file("/file.rs", text).await;
8363
8364 let project = Project::test(fs, cx);
8365 project.update(cx, |project, _| project.languages().add(language));
8366
8367 let worktree_id = project
8368 .update(cx, |project, cx| {
8369 project.find_or_create_local_worktree("/file.rs", true, cx)
8370 })
8371 .await
8372 .unwrap()
8373 .0
8374 .read_with(cx, |tree, _| tree.id());
8375 let buffer = project
8376 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8377 .await
8378 .unwrap();
8379 let mut fake_server = fake_servers.next().await.unwrap();
8380
8381 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8382 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8383
8384 editor.update(cx, |editor, cx| {
8385 editor.project = Some(project);
8386 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8387 editor.handle_input(&Input(".".to_string()), cx);
8388 });
8389
8390 handle_completion_request(
8391 &mut fake_server,
8392 "/file.rs",
8393 Point::new(0, 4),
8394 vec![
8395 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8396 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8397 ],
8398 )
8399 .await;
8400 editor
8401 .condition(&cx, |editor, _| editor.context_menu_visible())
8402 .await;
8403
8404 let apply_additional_edits = editor.update(cx, |editor, cx| {
8405 editor.move_down(&MoveDown, cx);
8406 let apply_additional_edits = editor
8407 .confirm_completion(&ConfirmCompletion(None), cx)
8408 .unwrap();
8409 assert_eq!(
8410 editor.text(cx),
8411 "
8412 one.second_completion
8413 two
8414 three
8415 "
8416 .unindent()
8417 );
8418 apply_additional_edits
8419 });
8420
8421 handle_resolve_completion_request(
8422 &mut fake_server,
8423 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8424 )
8425 .await;
8426 apply_additional_edits.await.unwrap();
8427 assert_eq!(
8428 editor.read_with(cx, |editor, cx| editor.text(cx)),
8429 "
8430 one.second_completion
8431 two
8432 three
8433 additional edit
8434 "
8435 .unindent()
8436 );
8437
8438 editor.update(cx, |editor, cx| {
8439 editor.select_ranges(
8440 [
8441 Point::new(1, 3)..Point::new(1, 3),
8442 Point::new(2, 5)..Point::new(2, 5),
8443 ],
8444 None,
8445 cx,
8446 );
8447
8448 editor.handle_input(&Input(" ".to_string()), cx);
8449 assert!(editor.context_menu.is_none());
8450 editor.handle_input(&Input("s".to_string()), cx);
8451 assert!(editor.context_menu.is_none());
8452 });
8453
8454 handle_completion_request(
8455 &mut fake_server,
8456 "/file.rs",
8457 Point::new(2, 7),
8458 vec![
8459 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8460 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8461 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8462 ],
8463 )
8464 .await;
8465 editor
8466 .condition(&cx, |editor, _| editor.context_menu_visible())
8467 .await;
8468
8469 editor.update(cx, |editor, cx| {
8470 editor.handle_input(&Input("i".to_string()), cx);
8471 });
8472
8473 handle_completion_request(
8474 &mut fake_server,
8475 "/file.rs",
8476 Point::new(2, 8),
8477 vec![
8478 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8479 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8480 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8481 ],
8482 )
8483 .await;
8484 editor
8485 .condition(&cx, |editor, _| editor.context_menu_visible())
8486 .await;
8487
8488 let apply_additional_edits = editor.update(cx, |editor, cx| {
8489 let apply_additional_edits = editor
8490 .confirm_completion(&ConfirmCompletion(None), cx)
8491 .unwrap();
8492 assert_eq!(
8493 editor.text(cx),
8494 "
8495 one.second_completion
8496 two sixth_completion
8497 three sixth_completion
8498 additional edit
8499 "
8500 .unindent()
8501 );
8502 apply_additional_edits
8503 });
8504 handle_resolve_completion_request(&mut fake_server, None).await;
8505 apply_additional_edits.await.unwrap();
8506
8507 async fn handle_completion_request(
8508 fake: &mut FakeLanguageServer,
8509 path: &'static str,
8510 position: Point,
8511 completions: Vec<(Range<Point>, &'static str)>,
8512 ) {
8513 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8514 assert_eq!(
8515 params.text_document_position.text_document.uri,
8516 lsp::Url::from_file_path(path).unwrap()
8517 );
8518 assert_eq!(
8519 params.text_document_position.position,
8520 lsp::Position::new(position.row, position.column)
8521 );
8522 Some(lsp::CompletionResponse::Array(
8523 completions
8524 .iter()
8525 .map(|(range, new_text)| lsp::CompletionItem {
8526 label: new_text.to_string(),
8527 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8528 range: lsp::Range::new(
8529 lsp::Position::new(range.start.row, range.start.column),
8530 lsp::Position::new(range.start.row, range.start.column),
8531 ),
8532 new_text: new_text.to_string(),
8533 })),
8534 ..Default::default()
8535 })
8536 .collect(),
8537 ))
8538 })
8539 .next()
8540 .await;
8541 }
8542
8543 async fn handle_resolve_completion_request(
8544 fake: &mut FakeLanguageServer,
8545 edit: Option<(Range<Point>, &'static str)>,
8546 ) {
8547 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8548 lsp::CompletionItem {
8549 additional_text_edits: edit.clone().map(|(range, new_text)| {
8550 vec![lsp::TextEdit::new(
8551 lsp::Range::new(
8552 lsp::Position::new(range.start.row, range.start.column),
8553 lsp::Position::new(range.end.row, range.end.column),
8554 ),
8555 new_text.to_string(),
8556 )]
8557 }),
8558 ..Default::default()
8559 }
8560 })
8561 .next()
8562 .await;
8563 }
8564 }
8565
8566 #[gpui::test]
8567 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8568 let settings = cx.read(Settings::test);
8569 let language = Arc::new(Language::new(
8570 LanguageConfig {
8571 line_comment: Some("// ".to_string()),
8572 ..Default::default()
8573 },
8574 Some(tree_sitter_rust::language()),
8575 ));
8576
8577 let text = "
8578 fn a() {
8579 //b();
8580 // c();
8581 // d();
8582 }
8583 "
8584 .unindent();
8585
8586 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8587 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8588 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8589
8590 view.update(cx, |editor, cx| {
8591 // If multiple selections intersect a line, the line is only
8592 // toggled once.
8593 editor.select_display_ranges(
8594 &[
8595 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8596 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8597 ],
8598 cx,
8599 );
8600 editor.toggle_comments(&ToggleComments, cx);
8601 assert_eq!(
8602 editor.text(cx),
8603 "
8604 fn a() {
8605 b();
8606 c();
8607 d();
8608 }
8609 "
8610 .unindent()
8611 );
8612
8613 // The comment prefix is inserted at the same column for every line
8614 // in a selection.
8615 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8616 editor.toggle_comments(&ToggleComments, cx);
8617 assert_eq!(
8618 editor.text(cx),
8619 "
8620 fn a() {
8621 // b();
8622 // c();
8623 // d();
8624 }
8625 "
8626 .unindent()
8627 );
8628
8629 // If a selection ends at the beginning of a line, that line is not toggled.
8630 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8631 editor.toggle_comments(&ToggleComments, cx);
8632 assert_eq!(
8633 editor.text(cx),
8634 "
8635 fn a() {
8636 // b();
8637 c();
8638 // d();
8639 }
8640 "
8641 .unindent()
8642 );
8643 });
8644 }
8645
8646 #[gpui::test]
8647 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8648 let settings = Settings::test(cx);
8649 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8650 let multibuffer = cx.add_model(|cx| {
8651 let mut multibuffer = MultiBuffer::new(0);
8652 multibuffer.push_excerpts(
8653 buffer.clone(),
8654 [
8655 Point::new(0, 0)..Point::new(0, 4),
8656 Point::new(1, 0)..Point::new(1, 4),
8657 ],
8658 cx,
8659 );
8660 multibuffer
8661 });
8662
8663 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8664
8665 let (_, view) = cx.add_window(Default::default(), |cx| {
8666 build_editor(multibuffer, settings, cx)
8667 });
8668 view.update(cx, |view, cx| {
8669 assert_eq!(view.text(cx), "aaaa\nbbbb");
8670 view.select_ranges(
8671 [
8672 Point::new(0, 0)..Point::new(0, 0),
8673 Point::new(1, 0)..Point::new(1, 0),
8674 ],
8675 None,
8676 cx,
8677 );
8678
8679 view.handle_input(&Input("X".to_string()), cx);
8680 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8681 assert_eq!(
8682 view.selected_ranges(cx),
8683 [
8684 Point::new(0, 1)..Point::new(0, 1),
8685 Point::new(1, 1)..Point::new(1, 1),
8686 ]
8687 )
8688 });
8689 }
8690
8691 #[gpui::test]
8692 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8693 let settings = Settings::test(cx);
8694 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8695 let multibuffer = cx.add_model(|cx| {
8696 let mut multibuffer = MultiBuffer::new(0);
8697 multibuffer.push_excerpts(
8698 buffer,
8699 [
8700 Point::new(0, 0)..Point::new(1, 4),
8701 Point::new(1, 0)..Point::new(2, 4),
8702 ],
8703 cx,
8704 );
8705 multibuffer
8706 });
8707
8708 assert_eq!(
8709 multibuffer.read(cx).read(cx).text(),
8710 "aaaa\nbbbb\nbbbb\ncccc"
8711 );
8712
8713 let (_, view) = cx.add_window(Default::default(), |cx| {
8714 build_editor(multibuffer, settings, cx)
8715 });
8716 view.update(cx, |view, cx| {
8717 view.select_ranges(
8718 [
8719 Point::new(1, 1)..Point::new(1, 1),
8720 Point::new(2, 3)..Point::new(2, 3),
8721 ],
8722 None,
8723 cx,
8724 );
8725
8726 view.handle_input(&Input("X".to_string()), cx);
8727 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8728 assert_eq!(
8729 view.selected_ranges(cx),
8730 [
8731 Point::new(1, 2)..Point::new(1, 2),
8732 Point::new(2, 5)..Point::new(2, 5),
8733 ]
8734 );
8735
8736 view.newline(&Newline, cx);
8737 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8738 assert_eq!(
8739 view.selected_ranges(cx),
8740 [
8741 Point::new(2, 0)..Point::new(2, 0),
8742 Point::new(6, 0)..Point::new(6, 0),
8743 ]
8744 );
8745 });
8746 }
8747
8748 #[gpui::test]
8749 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8750 let settings = Settings::test(cx);
8751 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8752 let mut excerpt1_id = None;
8753 let multibuffer = cx.add_model(|cx| {
8754 let mut multibuffer = MultiBuffer::new(0);
8755 excerpt1_id = multibuffer
8756 .push_excerpts(
8757 buffer.clone(),
8758 [
8759 Point::new(0, 0)..Point::new(1, 4),
8760 Point::new(1, 0)..Point::new(2, 4),
8761 ],
8762 cx,
8763 )
8764 .into_iter()
8765 .next();
8766 multibuffer
8767 });
8768 assert_eq!(
8769 multibuffer.read(cx).read(cx).text(),
8770 "aaaa\nbbbb\nbbbb\ncccc"
8771 );
8772 let (_, editor) = cx.add_window(Default::default(), |cx| {
8773 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8774 editor.select_ranges(
8775 [
8776 Point::new(1, 3)..Point::new(1, 3),
8777 Point::new(2, 1)..Point::new(2, 1),
8778 ],
8779 None,
8780 cx,
8781 );
8782 editor
8783 });
8784
8785 // Refreshing selections is a no-op when excerpts haven't changed.
8786 editor.update(cx, |editor, cx| {
8787 editor.refresh_selections(cx);
8788 assert_eq!(
8789 editor.selected_ranges(cx),
8790 [
8791 Point::new(1, 3)..Point::new(1, 3),
8792 Point::new(2, 1)..Point::new(2, 1),
8793 ]
8794 );
8795 });
8796
8797 multibuffer.update(cx, |multibuffer, cx| {
8798 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8799 });
8800 editor.update(cx, |editor, cx| {
8801 // Removing an excerpt causes the first selection to become degenerate.
8802 assert_eq!(
8803 editor.selected_ranges(cx),
8804 [
8805 Point::new(0, 0)..Point::new(0, 0),
8806 Point::new(0, 1)..Point::new(0, 1)
8807 ]
8808 );
8809
8810 // Refreshing selections will relocate the first selection to the original buffer
8811 // location.
8812 editor.refresh_selections(cx);
8813 assert_eq!(
8814 editor.selected_ranges(cx),
8815 [
8816 Point::new(0, 1)..Point::new(0, 1),
8817 Point::new(0, 3)..Point::new(0, 3)
8818 ]
8819 );
8820 });
8821 }
8822
8823 #[gpui::test]
8824 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8825 let settings = cx.read(Settings::test);
8826 let language = Arc::new(Language::new(
8827 LanguageConfig {
8828 brackets: vec![
8829 BracketPair {
8830 start: "{".to_string(),
8831 end: "}".to_string(),
8832 close: true,
8833 newline: true,
8834 },
8835 BracketPair {
8836 start: "/* ".to_string(),
8837 end: " */".to_string(),
8838 close: true,
8839 newline: true,
8840 },
8841 ],
8842 ..Default::default()
8843 },
8844 Some(tree_sitter_rust::language()),
8845 ));
8846
8847 let text = concat!(
8848 "{ }\n", // Suppress rustfmt
8849 " x\n", //
8850 " /* */\n", //
8851 "x\n", //
8852 "{{} }\n", //
8853 );
8854
8855 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8856 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8857 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8858 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8859 .await;
8860
8861 view.update(cx, |view, cx| {
8862 view.select_display_ranges(
8863 &[
8864 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8865 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8866 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8867 ],
8868 cx,
8869 );
8870 view.newline(&Newline, cx);
8871
8872 assert_eq!(
8873 view.buffer().read(cx).read(cx).text(),
8874 concat!(
8875 "{ \n", // Suppress rustfmt
8876 "\n", //
8877 "}\n", //
8878 " x\n", //
8879 " /* \n", //
8880 " \n", //
8881 " */\n", //
8882 "x\n", //
8883 "{{} \n", //
8884 "}\n", //
8885 )
8886 );
8887 });
8888 }
8889
8890 #[gpui::test]
8891 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8892 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8893 let settings = Settings::test(&cx);
8894 let (_, editor) = cx.add_window(Default::default(), |cx| {
8895 build_editor(buffer.clone(), settings, cx)
8896 });
8897
8898 editor.update(cx, |editor, cx| {
8899 struct Type1;
8900 struct Type2;
8901
8902 let buffer = buffer.read(cx).snapshot(cx);
8903
8904 let anchor_range = |range: Range<Point>| {
8905 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8906 };
8907
8908 editor.highlight_ranges::<Type1>(
8909 vec![
8910 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8911 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8912 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8913 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8914 ],
8915 Color::red(),
8916 cx,
8917 );
8918 editor.highlight_ranges::<Type2>(
8919 vec![
8920 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8921 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8922 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8923 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8924 ],
8925 Color::green(),
8926 cx,
8927 );
8928
8929 let snapshot = editor.snapshot(cx);
8930 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8931 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8932 &snapshot,
8933 );
8934 // Enforce a consistent ordering based on color without relying on the ordering of the
8935 // highlight's `TypeId` which is non-deterministic.
8936 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8937 assert_eq!(
8938 highlighted_ranges,
8939 &[
8940 (
8941 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8942 Color::green(),
8943 ),
8944 (
8945 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8946 Color::green(),
8947 ),
8948 (
8949 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8950 Color::red(),
8951 ),
8952 (
8953 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8954 Color::red(),
8955 ),
8956 ]
8957 );
8958 assert_eq!(
8959 editor.highlighted_ranges_in_range(
8960 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8961 &snapshot,
8962 ),
8963 &[(
8964 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8965 Color::red(),
8966 )]
8967 );
8968 });
8969 }
8970
8971 #[test]
8972 fn test_combine_syntax_and_fuzzy_match_highlights() {
8973 let string = "abcdefghijklmnop";
8974 let default = HighlightStyle::default();
8975 let syntax_ranges = [
8976 (
8977 0..3,
8978 HighlightStyle {
8979 color: Color::red(),
8980 ..default
8981 },
8982 ),
8983 (
8984 4..8,
8985 HighlightStyle {
8986 color: Color::green(),
8987 ..default
8988 },
8989 ),
8990 ];
8991 let match_indices = [4, 6, 7, 8];
8992 assert_eq!(
8993 combine_syntax_and_fuzzy_match_highlights(
8994 &string,
8995 default,
8996 syntax_ranges.into_iter(),
8997 &match_indices,
8998 ),
8999 &[
9000 (
9001 0..3,
9002 HighlightStyle {
9003 color: Color::red(),
9004 ..default
9005 },
9006 ),
9007 (
9008 4..5,
9009 HighlightStyle {
9010 color: Color::green(),
9011 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9012 ..default
9013 },
9014 ),
9015 (
9016 5..6,
9017 HighlightStyle {
9018 color: Color::green(),
9019 ..default
9020 },
9021 ),
9022 (
9023 6..8,
9024 HighlightStyle {
9025 color: Color::green(),
9026 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9027 ..default
9028 },
9029 ),
9030 (
9031 8..9,
9032 HighlightStyle {
9033 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
9034 ..default
9035 },
9036 ),
9037 ]
9038 );
9039 }
9040
9041 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9042 let point = DisplayPoint::new(row as u32, column as u32);
9043 point..point
9044 }
9045
9046 fn build_editor(
9047 buffer: ModelHandle<MultiBuffer>,
9048 settings: Settings,
9049 cx: &mut ViewContext<Editor>,
9050 ) -> Editor {
9051 let settings = watch::channel_with(settings);
9052 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
9053 }
9054}
9055
9056trait RangeExt<T> {
9057 fn sorted(&self) -> Range<T>;
9058 fn to_inclusive(&self) -> RangeInclusive<T>;
9059}
9060
9061impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9062 fn sorted(&self) -> Self {
9063 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9064 }
9065
9066 fn to_inclusive(&self) -> RangeInclusive<T> {
9067 self.start.clone()..=self.end.clone()
9068 }
9069}