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 _;
33use language::{
34 AnchorRangeExt as _, BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic,
35 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, MultiBuffer, MultiBufferSnapshot,
40 ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use postage::watch;
44use project::{Project, ProjectTransaction};
45use serde::{Deserialize, Serialize};
46use smallvec::SmallVec;
47use smol::Timer;
48use snippet::Snippet;
49use std::{
50 any::TypeId,
51 cmp::{self, Ordering, Reverse},
52 iter::{self, FromIterator},
53 mem,
54 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
55 sync::Arc,
56 time::{Duration, Instant},
57};
58pub use sum_tree::Bias;
59use text::rope::TextDimension;
60use theme::DiagnosticStyle;
61use util::{post_inc, ResultExt, TryFutureExt};
62use workspace::{settings, ItemNavHistory, PathOpener, Settings, Workspace};
63
64const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
65const MAX_LINE_LEN: usize = 1024;
66const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
67
68action!(Cancel);
69action!(Backspace);
70action!(Delete);
71action!(Input, String);
72action!(Newline);
73action!(Tab);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordBoundary);
77action!(DeleteToNextWordBoundary);
78action!(DeleteToBeginningOfLine);
79action!(DeleteToEndOfLine);
80action!(CutToEndOfLine);
81action!(DuplicateLine);
82action!(MoveLineUp);
83action!(MoveLineDown);
84action!(Cut);
85action!(Copy);
86action!(Paste);
87action!(Undo);
88action!(Redo);
89action!(MoveUp);
90action!(MoveDown);
91action!(MoveLeft);
92action!(MoveRight);
93action!(MoveToPreviousWordBoundary);
94action!(MoveToNextWordBoundary);
95action!(MoveToBeginningOfLine);
96action!(MoveToEndOfLine);
97action!(MoveToBeginning);
98action!(MoveToEnd);
99action!(SelectUp);
100action!(SelectDown);
101action!(SelectLeft);
102action!(SelectRight);
103action!(SelectToPreviousWordBoundary);
104action!(SelectToNextWordBoundary);
105action!(SelectToBeginningOfLine, bool);
106action!(SelectToEndOfLine, bool);
107action!(SelectToBeginning);
108action!(SelectToEnd);
109action!(SelectAll);
110action!(SelectLine);
111action!(SplitSelectionIntoLines);
112action!(AddSelectionAbove);
113action!(AddSelectionBelow);
114action!(SelectNext, bool);
115action!(ToggleComments);
116action!(SelectLargerSyntaxNode);
117action!(SelectSmallerSyntaxNode);
118action!(MoveToEnclosingBracket);
119action!(ShowNextDiagnostic);
120action!(GoToDefinition);
121action!(FindAllReferences);
122action!(Rename);
123action!(ConfirmRename);
124action!(PageUp);
125action!(PageDown);
126action!(Fold);
127action!(Unfold);
128action!(FoldSelectedRanges);
129action!(Scroll, Vector2F);
130action!(Select, SelectPhase);
131action!(ShowCompletions);
132action!(ToggleCodeActions, bool);
133action!(ConfirmCompletion, Option<usize>);
134action!(ConfirmCodeAction, Option<usize>);
135
136pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
137 path_openers.push(Box::new(items::BufferOpener));
138 cx.add_bindings(vec![
139 Binding::new("escape", Cancel, Some("Editor")),
140 Binding::new("backspace", Backspace, Some("Editor")),
141 Binding::new("ctrl-h", Backspace, Some("Editor")),
142 Binding::new("delete", Delete, Some("Editor")),
143 Binding::new("ctrl-d", Delete, Some("Editor")),
144 Binding::new("enter", Newline, Some("Editor && mode == full")),
145 Binding::new(
146 "alt-enter",
147 Input("\n".into()),
148 Some("Editor && mode == auto_height"),
149 ),
150 Binding::new(
151 "enter",
152 ConfirmCompletion(None),
153 Some("Editor && showing_completions"),
154 ),
155 Binding::new(
156 "enter",
157 ConfirmCodeAction(None),
158 Some("Editor && showing_code_actions"),
159 ),
160 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
161 Binding::new("tab", Tab, Some("Editor")),
162 Binding::new(
163 "tab",
164 ConfirmCompletion(None),
165 Some("Editor && showing_completions"),
166 ),
167 Binding::new("shift-tab", Outdent, Some("Editor")),
168 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
169 Binding::new(
170 "alt-backspace",
171 DeleteToPreviousWordBoundary,
172 Some("Editor"),
173 ),
174 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
175 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
176 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
177 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
178 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
179 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
180 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
181 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
182 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
183 Binding::new("cmd-x", Cut, Some("Editor")),
184 Binding::new("cmd-c", Copy, Some("Editor")),
185 Binding::new("cmd-v", Paste, Some("Editor")),
186 Binding::new("cmd-z", Undo, Some("Editor")),
187 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
188 Binding::new("up", MoveUp, Some("Editor")),
189 Binding::new("down", MoveDown, Some("Editor")),
190 Binding::new("left", MoveLeft, Some("Editor")),
191 Binding::new("right", MoveRight, Some("Editor")),
192 Binding::new("ctrl-p", MoveUp, Some("Editor")),
193 Binding::new("ctrl-n", MoveDown, Some("Editor")),
194 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
195 Binding::new("ctrl-f", MoveRight, Some("Editor")),
196 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
197 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
198 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
199 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
200 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
201 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
202 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
203 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
204 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
205 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
206 Binding::new("shift-up", SelectUp, Some("Editor")),
207 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
208 Binding::new("shift-down", SelectDown, Some("Editor")),
209 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
210 Binding::new("shift-left", SelectLeft, Some("Editor")),
211 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
212 Binding::new("shift-right", SelectRight, Some("Editor")),
213 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
214 Binding::new(
215 "alt-shift-left",
216 SelectToPreviousWordBoundary,
217 Some("Editor"),
218 ),
219 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
220 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
221 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
222 Binding::new(
223 "cmd-shift-left",
224 SelectToBeginningOfLine(true),
225 Some("Editor"),
226 ),
227 Binding::new(
228 "ctrl-shift-A",
229 SelectToBeginningOfLine(true),
230 Some("Editor"),
231 ),
232 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
233 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
234 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
235 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
236 Binding::new("cmd-a", SelectAll, Some("Editor")),
237 Binding::new("cmd-l", SelectLine, Some("Editor")),
238 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
239 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
240 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
241 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
242 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
243 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
244 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
245 Binding::new("cmd-/", ToggleComments, Some("Editor")),
246 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
247 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
248 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
249 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
250 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
251 Binding::new("f2", Rename, Some("Editor")),
252 Binding::new("f12", GoToDefinition, Some("Editor")),
253 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
254 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
255 Binding::new("pageup", PageUp, Some("Editor")),
256 Binding::new("pagedown", PageDown, Some("Editor")),
257 Binding::new("alt-cmd-[", Fold, Some("Editor")),
258 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
259 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
260 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
261 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
262 ]);
263
264 cx.add_action(Editor::open_new);
265 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
266 cx.add_action(Editor::select);
267 cx.add_action(Editor::cancel);
268 cx.add_action(Editor::handle_input);
269 cx.add_action(Editor::newline);
270 cx.add_action(Editor::backspace);
271 cx.add_action(Editor::delete);
272 cx.add_action(Editor::tab);
273 cx.add_action(Editor::outdent);
274 cx.add_action(Editor::delete_line);
275 cx.add_action(Editor::delete_to_previous_word_boundary);
276 cx.add_action(Editor::delete_to_next_word_boundary);
277 cx.add_action(Editor::delete_to_beginning_of_line);
278 cx.add_action(Editor::delete_to_end_of_line);
279 cx.add_action(Editor::cut_to_end_of_line);
280 cx.add_action(Editor::duplicate_line);
281 cx.add_action(Editor::move_line_up);
282 cx.add_action(Editor::move_line_down);
283 cx.add_action(Editor::cut);
284 cx.add_action(Editor::copy);
285 cx.add_action(Editor::paste);
286 cx.add_action(Editor::undo);
287 cx.add_action(Editor::redo);
288 cx.add_action(Editor::move_up);
289 cx.add_action(Editor::move_down);
290 cx.add_action(Editor::move_left);
291 cx.add_action(Editor::move_right);
292 cx.add_action(Editor::move_to_previous_word_boundary);
293 cx.add_action(Editor::move_to_next_word_boundary);
294 cx.add_action(Editor::move_to_beginning_of_line);
295 cx.add_action(Editor::move_to_end_of_line);
296 cx.add_action(Editor::move_to_beginning);
297 cx.add_action(Editor::move_to_end);
298 cx.add_action(Editor::select_up);
299 cx.add_action(Editor::select_down);
300 cx.add_action(Editor::select_left);
301 cx.add_action(Editor::select_right);
302 cx.add_action(Editor::select_to_previous_word_boundary);
303 cx.add_action(Editor::select_to_next_word_boundary);
304 cx.add_action(Editor::select_to_beginning_of_line);
305 cx.add_action(Editor::select_to_end_of_line);
306 cx.add_action(Editor::select_to_beginning);
307 cx.add_action(Editor::select_to_end);
308 cx.add_action(Editor::select_all);
309 cx.add_action(Editor::select_line);
310 cx.add_action(Editor::split_selection_into_lines);
311 cx.add_action(Editor::add_selection_above);
312 cx.add_action(Editor::add_selection_below);
313 cx.add_action(Editor::select_next);
314 cx.add_action(Editor::toggle_comments);
315 cx.add_action(Editor::select_larger_syntax_node);
316 cx.add_action(Editor::select_smaller_syntax_node);
317 cx.add_action(Editor::move_to_enclosing_bracket);
318 cx.add_action(Editor::show_next_diagnostic);
319 cx.add_action(Editor::go_to_definition);
320 cx.add_action(Editor::page_up);
321 cx.add_action(Editor::page_down);
322 cx.add_action(Editor::fold);
323 cx.add_action(Editor::unfold);
324 cx.add_action(Editor::fold_selected_ranges);
325 cx.add_action(Editor::show_completions);
326 cx.add_action(Editor::toggle_code_actions);
327 cx.add_async_action(Editor::confirm_completion);
328 cx.add_async_action(Editor::confirm_code_action);
329 cx.add_async_action(Editor::rename);
330 cx.add_async_action(Editor::confirm_rename);
331 cx.add_async_action(Editor::find_all_references);
332}
333
334trait SelectionExt {
335 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
336 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
337 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
338 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
339 -> Range<u32>;
340}
341
342trait InvalidationRegion {
343 fn ranges(&self) -> &[Range<Anchor>];
344}
345
346#[derive(Clone, Debug)]
347pub enum SelectPhase {
348 Begin {
349 position: DisplayPoint,
350 add: bool,
351 click_count: usize,
352 },
353 BeginColumnar {
354 position: DisplayPoint,
355 overshoot: u32,
356 },
357 Extend {
358 position: DisplayPoint,
359 click_count: usize,
360 },
361 Update {
362 position: DisplayPoint,
363 overshoot: u32,
364 scroll_position: Vector2F,
365 },
366 End,
367}
368
369#[derive(Clone, Debug)]
370pub enum SelectMode {
371 Character,
372 Word(Range<Anchor>),
373 Line(Range<Anchor>),
374 All,
375}
376
377#[derive(PartialEq, Eq)]
378pub enum Autoscroll {
379 Fit,
380 Center,
381 Newest,
382}
383
384#[derive(Copy, Clone, PartialEq, Eq)]
385pub enum EditorMode {
386 SingleLine,
387 AutoHeight { max_lines: usize },
388 Full,
389}
390
391#[derive(Clone)]
392pub enum SoftWrap {
393 None,
394 EditorWidth,
395 Column(u32),
396}
397
398#[derive(Clone)]
399pub struct EditorStyle {
400 pub text: TextStyle,
401 pub placeholder_text: Option<TextStyle>,
402 pub theme: theme::Editor,
403}
404
405type CompletionId = usize;
406
407pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
408
409pub struct Editor {
410 handle: WeakViewHandle<Self>,
411 buffer: ModelHandle<MultiBuffer>,
412 display_map: ModelHandle<DisplayMap>,
413 next_selection_id: usize,
414 selections: Arc<[Selection<Anchor>]>,
415 pending_selection: Option<PendingSelection>,
416 columnar_selection_tail: Option<Anchor>,
417 add_selections_state: Option<AddSelectionsState>,
418 select_next_state: Option<SelectNextState>,
419 selection_history:
420 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
421 autoclose_stack: InvalidationStack<BracketPairState>,
422 snippet_stack: InvalidationStack<SnippetState>,
423 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
424 active_diagnostics: Option<ActiveDiagnosticGroup>,
425 scroll_position: Vector2F,
426 scroll_top_anchor: Option<Anchor>,
427 autoscroll_request: Option<Autoscroll>,
428 settings: watch::Receiver<Settings>,
429 soft_wrap_mode_override: Option<settings::SoftWrap>,
430 get_field_editor_theme: Option<GetFieldEditorTheme>,
431 project: Option<ModelHandle<Project>>,
432 focused: bool,
433 show_local_cursors: bool,
434 blink_epoch: usize,
435 blinking_paused: bool,
436 mode: EditorMode,
437 vertical_scroll_margin: f32,
438 placeholder_text: Option<Arc<str>>,
439 highlighted_rows: Option<Range<u32>>,
440 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
441 nav_history: Option<ItemNavHistory>,
442 context_menu: Option<ContextMenu>,
443 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
444 next_completion_id: CompletionId,
445 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
446 code_actions_task: Option<Task<()>>,
447 document_highlights_task: Option<Task<()>>,
448 pending_rename: Option<RenameState>,
449}
450
451pub struct EditorSnapshot {
452 pub mode: EditorMode,
453 pub display_snapshot: DisplaySnapshot,
454 pub placeholder_text: Option<Arc<str>>,
455 is_focused: bool,
456 scroll_position: Vector2F,
457 scroll_top_anchor: Option<Anchor>,
458}
459
460#[derive(Clone)]
461pub struct PendingSelection {
462 selection: Selection<Anchor>,
463 mode: SelectMode,
464}
465
466struct AddSelectionsState {
467 above: bool,
468 stack: Vec<usize>,
469}
470
471struct SelectNextState {
472 query: AhoCorasick,
473 wordwise: bool,
474 done: bool,
475}
476
477struct BracketPairState {
478 ranges: Vec<Range<Anchor>>,
479 pair: BracketPair,
480}
481
482struct SnippetState {
483 ranges: Vec<Vec<Range<Anchor>>>,
484 active_index: usize,
485}
486
487pub struct RenameState {
488 pub range: Range<Anchor>,
489 pub old_name: String,
490 pub editor: ViewHandle<Editor>,
491 block_id: BlockId,
492}
493
494struct InvalidationStack<T>(Vec<T>);
495
496enum ContextMenu {
497 Completions(CompletionsMenu),
498 CodeActions(CodeActionsMenu),
499}
500
501impl ContextMenu {
502 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
503 if self.visible() {
504 match self {
505 ContextMenu::Completions(menu) => menu.select_prev(cx),
506 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
507 }
508 true
509 } else {
510 false
511 }
512 }
513
514 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
515 if self.visible() {
516 match self {
517 ContextMenu::Completions(menu) => menu.select_next(cx),
518 ContextMenu::CodeActions(menu) => menu.select_next(cx),
519 }
520 true
521 } else {
522 false
523 }
524 }
525
526 fn visible(&self) -> bool {
527 match self {
528 ContextMenu::Completions(menu) => menu.visible(),
529 ContextMenu::CodeActions(menu) => menu.visible(),
530 }
531 }
532
533 fn render(
534 &self,
535 cursor_position: DisplayPoint,
536 style: EditorStyle,
537 cx: &AppContext,
538 ) -> (DisplayPoint, ElementBox) {
539 match self {
540 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
541 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
542 }
543 }
544}
545
546struct CompletionsMenu {
547 id: CompletionId,
548 initial_position: Anchor,
549 buffer: ModelHandle<Buffer>,
550 completions: Arc<[Completion]>,
551 match_candidates: Vec<StringMatchCandidate>,
552 matches: Arc<[StringMatch]>,
553 selected_item: usize,
554 list: UniformListState,
555}
556
557impl CompletionsMenu {
558 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
559 if self.selected_item > 0 {
560 self.selected_item -= 1;
561 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
562 }
563 cx.notify();
564 }
565
566 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
567 if self.selected_item + 1 < self.matches.len() {
568 self.selected_item += 1;
569 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
570 }
571 cx.notify();
572 }
573
574 fn visible(&self) -> bool {
575 !self.matches.is_empty()
576 }
577
578 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
579 enum CompletionTag {}
580
581 let completions = self.completions.clone();
582 let matches = self.matches.clone();
583 let selected_item = self.selected_item;
584 let container_style = style.autocomplete.container;
585 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
586 let start_ix = range.start;
587 for (ix, mat) in matches[range].iter().enumerate() {
588 let completion = &completions[mat.candidate_id];
589 let item_ix = start_ix + ix;
590 items.push(
591 MouseEventHandler::new::<CompletionTag, _, _>(
592 mat.candidate_id,
593 cx,
594 |state, _| {
595 let item_style = if item_ix == selected_item {
596 style.autocomplete.selected_item
597 } else if state.hovered {
598 style.autocomplete.hovered_item
599 } else {
600 style.autocomplete.item
601 };
602
603 Text::new(completion.label.text.clone(), style.text.clone())
604 .with_soft_wrap(false)
605 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
606 &completion.label.text,
607 style.text.color.into(),
608 styled_runs_for_code_label(
609 &completion.label,
610 style.text.color,
611 &style.syntax,
612 ),
613 &mat.positions,
614 ))
615 .contained()
616 .with_style(item_style)
617 .boxed()
618 },
619 )
620 .with_cursor_style(CursorStyle::PointingHand)
621 .on_mouse_down(move |cx| {
622 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
623 })
624 .boxed(),
625 );
626 }
627 })
628 .with_width_from_item(
629 self.matches
630 .iter()
631 .enumerate()
632 .max_by_key(|(_, mat)| {
633 self.completions[mat.candidate_id]
634 .label
635 .text
636 .chars()
637 .count()
638 })
639 .map(|(ix, _)| ix),
640 )
641 .contained()
642 .with_style(container_style)
643 .boxed()
644 }
645
646 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
647 let mut matches = if let Some(query) = query {
648 fuzzy::match_strings(
649 &self.match_candidates,
650 query,
651 false,
652 100,
653 &Default::default(),
654 executor,
655 )
656 .await
657 } else {
658 self.match_candidates
659 .iter()
660 .enumerate()
661 .map(|(candidate_id, candidate)| StringMatch {
662 candidate_id,
663 score: Default::default(),
664 positions: Default::default(),
665 string: candidate.string.clone(),
666 })
667 .collect()
668 };
669 matches.sort_unstable_by_key(|mat| {
670 (
671 Reverse(OrderedFloat(mat.score)),
672 self.completions[mat.candidate_id].sort_key(),
673 )
674 });
675
676 for mat in &mut matches {
677 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
678 for position in &mut mat.positions {
679 *position += filter_start;
680 }
681 }
682
683 self.matches = matches.into();
684 }
685}
686
687#[derive(Clone)]
688struct CodeActionsMenu {
689 actions: Arc<[CodeAction]>,
690 buffer: ModelHandle<Buffer>,
691 selected_item: usize,
692 list: UniformListState,
693 deployed_from_indicator: bool,
694}
695
696impl CodeActionsMenu {
697 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
698 if self.selected_item > 0 {
699 self.selected_item -= 1;
700 cx.notify()
701 }
702 }
703
704 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
705 if self.selected_item + 1 < self.actions.len() {
706 self.selected_item += 1;
707 cx.notify()
708 }
709 }
710
711 fn visible(&self) -> bool {
712 !self.actions.is_empty()
713 }
714
715 fn render(
716 &self,
717 mut cursor_position: DisplayPoint,
718 style: EditorStyle,
719 ) -> (DisplayPoint, ElementBox) {
720 enum ActionTag {}
721
722 let container_style = style.autocomplete.container;
723 let actions = self.actions.clone();
724 let selected_item = self.selected_item;
725 let element =
726 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
727 let start_ix = range.start;
728 for (ix, action) in actions[range].iter().enumerate() {
729 let item_ix = start_ix + ix;
730 items.push(
731 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
732 let item_style = if item_ix == selected_item {
733 style.autocomplete.selected_item
734 } else if state.hovered {
735 style.autocomplete.hovered_item
736 } else {
737 style.autocomplete.item
738 };
739
740 Text::new(action.lsp_action.title.clone(), style.text.clone())
741 .with_soft_wrap(false)
742 .contained()
743 .with_style(item_style)
744 .boxed()
745 })
746 .with_cursor_style(CursorStyle::PointingHand)
747 .on_mouse_down(move |cx| {
748 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
749 })
750 .boxed(),
751 );
752 }
753 })
754 .with_width_from_item(
755 self.actions
756 .iter()
757 .enumerate()
758 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
759 .map(|(ix, _)| ix),
760 )
761 .contained()
762 .with_style(container_style)
763 .boxed();
764
765 if self.deployed_from_indicator {
766 *cursor_position.column_mut() = 0;
767 }
768
769 (cursor_position, element)
770 }
771}
772
773#[derive(Debug)]
774struct ActiveDiagnosticGroup {
775 primary_range: Range<Anchor>,
776 primary_message: String,
777 blocks: HashMap<BlockId, Diagnostic>,
778 is_valid: bool,
779}
780
781#[derive(Serialize, Deserialize)]
782struct ClipboardSelection {
783 len: usize,
784 is_entire_line: bool,
785}
786
787pub struct NavigationData {
788 anchor: Anchor,
789 offset: usize,
790}
791
792impl Editor {
793 pub fn single_line(
794 settings: watch::Receiver<Settings>,
795 field_editor_style: Option<GetFieldEditorTheme>,
796 cx: &mut ViewContext<Self>,
797 ) -> Self {
798 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
799 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
800 Self::new(
801 EditorMode::SingleLine,
802 buffer,
803 None,
804 settings,
805 field_editor_style,
806 cx,
807 )
808 }
809
810 pub fn auto_height(
811 max_lines: usize,
812 settings: watch::Receiver<Settings>,
813 field_editor_style: Option<GetFieldEditorTheme>,
814 cx: &mut ViewContext<Self>,
815 ) -> Self {
816 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
817 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
818 Self::new(
819 EditorMode::AutoHeight { max_lines },
820 buffer,
821 None,
822 settings,
823 field_editor_style,
824 cx,
825 )
826 }
827
828 pub fn for_buffer(
829 buffer: ModelHandle<MultiBuffer>,
830 project: Option<ModelHandle<Project>>,
831 settings: watch::Receiver<Settings>,
832 cx: &mut ViewContext<Self>,
833 ) -> Self {
834 Self::new(EditorMode::Full, buffer, project, settings, None, cx)
835 }
836
837 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
838 let mut clone = Self::new(
839 self.mode,
840 self.buffer.clone(),
841 self.project.clone(),
842 self.settings.clone(),
843 self.get_field_editor_theme,
844 cx,
845 );
846 clone.scroll_position = self.scroll_position;
847 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
848 clone.nav_history = self
849 .nav_history
850 .as_ref()
851 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
852 clone
853 }
854
855 fn new(
856 mode: EditorMode,
857 buffer: ModelHandle<MultiBuffer>,
858 project: Option<ModelHandle<Project>>,
859 settings: watch::Receiver<Settings>,
860 get_field_editor_theme: Option<GetFieldEditorTheme>,
861 cx: &mut ViewContext<Self>,
862 ) -> Self {
863 let display_map = cx.add_model(|cx| {
864 let settings = settings.borrow();
865 let style = build_style(&*settings, get_field_editor_theme, cx);
866 DisplayMap::new(
867 buffer.clone(),
868 settings.tab_size,
869 style.text.font_id,
870 style.text.font_size,
871 None,
872 2,
873 1,
874 cx,
875 )
876 });
877 cx.observe(&buffer, Self::on_buffer_changed).detach();
878 cx.subscribe(&buffer, Self::on_buffer_event).detach();
879 cx.observe(&display_map, Self::on_display_map_changed)
880 .detach();
881
882 let mut this = Self {
883 handle: cx.weak_handle(),
884 buffer,
885 display_map,
886 selections: Arc::from([]),
887 pending_selection: Some(PendingSelection {
888 selection: Selection {
889 id: 0,
890 start: Anchor::min(),
891 end: Anchor::min(),
892 reversed: false,
893 goal: SelectionGoal::None,
894 },
895 mode: SelectMode::Character,
896 }),
897 columnar_selection_tail: None,
898 next_selection_id: 1,
899 add_selections_state: None,
900 select_next_state: None,
901 selection_history: Default::default(),
902 autoclose_stack: Default::default(),
903 snippet_stack: Default::default(),
904 select_larger_syntax_node_stack: Vec::new(),
905 active_diagnostics: None,
906 settings,
907 soft_wrap_mode_override: None,
908 get_field_editor_theme,
909 project,
910 scroll_position: Vector2F::zero(),
911 scroll_top_anchor: None,
912 autoscroll_request: None,
913 focused: false,
914 show_local_cursors: false,
915 blink_epoch: 0,
916 blinking_paused: false,
917 mode,
918 vertical_scroll_margin: 3.0,
919 placeholder_text: None,
920 highlighted_rows: None,
921 highlighted_ranges: Default::default(),
922 nav_history: None,
923 context_menu: None,
924 completion_tasks: Default::default(),
925 next_completion_id: 0,
926 available_code_actions: Default::default(),
927 code_actions_task: Default::default(),
928 document_highlights_task: Default::default(),
929 pending_rename: Default::default(),
930 };
931 this.end_selection(cx);
932 this
933 }
934
935 pub fn open_new(
936 workspace: &mut Workspace,
937 _: &workspace::OpenNew,
938 cx: &mut ViewContext<Workspace>,
939 ) {
940 let buffer = cx
941 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
942 workspace.open_item(BufferItemHandle(buffer), cx);
943 }
944
945 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
946 self.buffer.read(cx).replica_id()
947 }
948
949 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
950 &self.buffer
951 }
952
953 pub fn title(&self, cx: &AppContext) -> String {
954 self.buffer().read(cx).title(cx)
955 }
956
957 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
958 EditorSnapshot {
959 mode: self.mode,
960 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
961 scroll_position: self.scroll_position,
962 scroll_top_anchor: self.scroll_top_anchor.clone(),
963 placeholder_text: self.placeholder_text.clone(),
964 is_focused: self
965 .handle
966 .upgrade(cx)
967 .map_or(false, |handle| handle.is_focused(cx)),
968 }
969 }
970
971 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
972 self.buffer.read(cx).language(cx)
973 }
974
975 fn style(&self, cx: &AppContext) -> EditorStyle {
976 build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
977 }
978
979 pub fn set_placeholder_text(
980 &mut self,
981 placeholder_text: impl Into<Arc<str>>,
982 cx: &mut ViewContext<Self>,
983 ) {
984 self.placeholder_text = Some(placeholder_text.into());
985 cx.notify();
986 }
987
988 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
989 self.vertical_scroll_margin = margin_rows as f32;
990 cx.notify();
991 }
992
993 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
994 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
995
996 if scroll_position.y() == 0. {
997 self.scroll_top_anchor = None;
998 self.scroll_position = scroll_position;
999 } else {
1000 let scroll_top_buffer_offset =
1001 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1002 let anchor = map
1003 .buffer_snapshot
1004 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1005 self.scroll_position = vec2f(
1006 scroll_position.x(),
1007 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1008 );
1009 self.scroll_top_anchor = Some(anchor);
1010 }
1011
1012 cx.notify();
1013 }
1014
1015 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1016 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1017 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1018 }
1019
1020 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1021 if max < self.scroll_position.x() {
1022 self.scroll_position.set_x(max);
1023 true
1024 } else {
1025 false
1026 }
1027 }
1028
1029 pub fn autoscroll_vertically(
1030 &mut self,
1031 viewport_height: f32,
1032 line_height: f32,
1033 cx: &mut ViewContext<Self>,
1034 ) -> bool {
1035 let visible_lines = viewport_height / line_height;
1036 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1037 let mut scroll_position =
1038 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1039 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1040 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1041 } else {
1042 display_map.max_point().row().saturating_sub(1) as f32
1043 };
1044 if scroll_position.y() > max_scroll_top {
1045 scroll_position.set_y(max_scroll_top);
1046 self.set_scroll_position(scroll_position, cx);
1047 }
1048
1049 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1050 autoscroll
1051 } else {
1052 return false;
1053 };
1054
1055 let first_cursor_top;
1056 let last_cursor_bottom;
1057 if let Some(highlighted_rows) = &self.highlighted_rows {
1058 first_cursor_top = highlighted_rows.start as f32;
1059 last_cursor_bottom = first_cursor_top + 1.;
1060 } else if autoscroll == Autoscroll::Newest {
1061 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
1062 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1063 last_cursor_bottom = first_cursor_top + 1.;
1064 } else {
1065 let selections = self.local_selections::<Point>(cx);
1066 first_cursor_top = selections
1067 .first()
1068 .unwrap()
1069 .head()
1070 .to_display_point(&display_map)
1071 .row() as f32;
1072 last_cursor_bottom = selections
1073 .last()
1074 .unwrap()
1075 .head()
1076 .to_display_point(&display_map)
1077 .row() as f32
1078 + 1.0;
1079 }
1080
1081 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1082 0.
1083 } else {
1084 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1085 };
1086 if margin < 0.0 {
1087 return false;
1088 }
1089
1090 match autoscroll {
1091 Autoscroll::Fit | Autoscroll::Newest => {
1092 let margin = margin.min(self.vertical_scroll_margin);
1093 let target_top = (first_cursor_top - margin).max(0.0);
1094 let target_bottom = last_cursor_bottom + margin;
1095 let start_row = scroll_position.y();
1096 let end_row = start_row + visible_lines;
1097
1098 if target_top < start_row {
1099 scroll_position.set_y(target_top);
1100 self.set_scroll_position(scroll_position, cx);
1101 } else if target_bottom >= end_row {
1102 scroll_position.set_y(target_bottom - visible_lines);
1103 self.set_scroll_position(scroll_position, cx);
1104 }
1105 }
1106 Autoscroll::Center => {
1107 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1108 self.set_scroll_position(scroll_position, cx);
1109 }
1110 }
1111
1112 true
1113 }
1114
1115 pub fn autoscroll_horizontally(
1116 &mut self,
1117 start_row: u32,
1118 viewport_width: f32,
1119 scroll_width: f32,
1120 max_glyph_width: f32,
1121 layouts: &[text_layout::Line],
1122 cx: &mut ViewContext<Self>,
1123 ) -> bool {
1124 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1125 let selections = self.local_selections::<Point>(cx);
1126
1127 let mut target_left;
1128 let mut target_right;
1129
1130 if self.highlighted_rows.is_some() {
1131 target_left = 0.0_f32;
1132 target_right = 0.0_f32;
1133 } else {
1134 target_left = std::f32::INFINITY;
1135 target_right = 0.0_f32;
1136 for selection in selections {
1137 let head = selection.head().to_display_point(&display_map);
1138 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1139 let start_column = head.column().saturating_sub(3);
1140 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1141 target_left = target_left.min(
1142 layouts[(head.row() - start_row) as usize]
1143 .x_for_index(start_column as usize),
1144 );
1145 target_right = target_right.max(
1146 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1147 + max_glyph_width,
1148 );
1149 }
1150 }
1151 }
1152
1153 target_right = target_right.min(scroll_width);
1154
1155 if target_right - target_left > viewport_width {
1156 return false;
1157 }
1158
1159 let scroll_left = self.scroll_position.x() * max_glyph_width;
1160 let scroll_right = scroll_left + viewport_width;
1161
1162 if target_left < scroll_left {
1163 self.scroll_position.set_x(target_left / max_glyph_width);
1164 true
1165 } else if target_right > scroll_right {
1166 self.scroll_position
1167 .set_x((target_right - viewport_width) / max_glyph_width);
1168 true
1169 } else {
1170 false
1171 }
1172 }
1173
1174 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1175 self.hide_context_menu(cx);
1176
1177 match phase {
1178 SelectPhase::Begin {
1179 position,
1180 add,
1181 click_count,
1182 } => self.begin_selection(*position, *add, *click_count, cx),
1183 SelectPhase::BeginColumnar {
1184 position,
1185 overshoot,
1186 } => self.begin_columnar_selection(*position, *overshoot, cx),
1187 SelectPhase::Extend {
1188 position,
1189 click_count,
1190 } => self.extend_selection(*position, *click_count, cx),
1191 SelectPhase::Update {
1192 position,
1193 overshoot,
1194 scroll_position,
1195 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1196 SelectPhase::End => self.end_selection(cx),
1197 }
1198 }
1199
1200 fn extend_selection(
1201 &mut self,
1202 position: DisplayPoint,
1203 click_count: usize,
1204 cx: &mut ViewContext<Self>,
1205 ) {
1206 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1207 let tail = self
1208 .newest_selection::<usize>(&display_map.buffer_snapshot)
1209 .tail();
1210 self.begin_selection(position, false, click_count, cx);
1211
1212 let position = position.to_offset(&display_map, Bias::Left);
1213 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1214 let mut pending = self.pending_selection.clone().unwrap();
1215
1216 if position >= tail {
1217 pending.selection.start = tail_anchor.clone();
1218 } else {
1219 pending.selection.end = tail_anchor.clone();
1220 pending.selection.reversed = true;
1221 }
1222
1223 match &mut pending.mode {
1224 SelectMode::Word(range) | SelectMode::Line(range) => {
1225 *range = tail_anchor.clone()..tail_anchor
1226 }
1227 _ => {}
1228 }
1229
1230 self.set_selections(self.selections.clone(), Some(pending), cx);
1231 }
1232
1233 fn begin_selection(
1234 &mut self,
1235 position: DisplayPoint,
1236 add: bool,
1237 click_count: usize,
1238 cx: &mut ViewContext<Self>,
1239 ) {
1240 if !self.focused {
1241 cx.focus_self();
1242 cx.emit(Event::Activate);
1243 }
1244
1245 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1246 let buffer = &display_map.buffer_snapshot;
1247 let newest_selection = self.newest_anchor_selection().clone();
1248
1249 let start;
1250 let end;
1251 let mode;
1252 match click_count {
1253 1 => {
1254 start = buffer.anchor_before(position.to_point(&display_map));
1255 end = start.clone();
1256 mode = SelectMode::Character;
1257 }
1258 2 => {
1259 let range = movement::surrounding_word(&display_map, position);
1260 start = buffer.anchor_before(range.start.to_point(&display_map));
1261 end = buffer.anchor_before(range.end.to_point(&display_map));
1262 mode = SelectMode::Word(start.clone()..end.clone());
1263 }
1264 3 => {
1265 let position = display_map
1266 .clip_point(position, Bias::Left)
1267 .to_point(&display_map);
1268 let line_start = display_map.prev_line_boundary(position).0;
1269 let next_line_start = buffer.clip_point(
1270 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1271 Bias::Left,
1272 );
1273 start = buffer.anchor_before(line_start);
1274 end = buffer.anchor_before(next_line_start);
1275 mode = SelectMode::Line(start.clone()..end.clone());
1276 }
1277 _ => {
1278 start = buffer.anchor_before(0);
1279 end = buffer.anchor_before(buffer.len());
1280 mode = SelectMode::All;
1281 }
1282 }
1283
1284 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1285
1286 let selection = Selection {
1287 id: post_inc(&mut self.next_selection_id),
1288 start,
1289 end,
1290 reversed: false,
1291 goal: SelectionGoal::None,
1292 };
1293
1294 let mut selections;
1295 if add {
1296 selections = self.selections.clone();
1297 // Remove the newest selection if it was added due to a previous mouse up
1298 // within this multi-click.
1299 if click_count > 1 {
1300 selections = self
1301 .selections
1302 .iter()
1303 .filter(|selection| selection.id != newest_selection.id)
1304 .cloned()
1305 .collect();
1306 }
1307 } else {
1308 selections = Arc::from([]);
1309 }
1310 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1311
1312 cx.notify();
1313 }
1314
1315 fn begin_columnar_selection(
1316 &mut self,
1317 position: DisplayPoint,
1318 overshoot: u32,
1319 cx: &mut ViewContext<Self>,
1320 ) {
1321 if !self.focused {
1322 cx.focus_self();
1323 cx.emit(Event::Activate);
1324 }
1325
1326 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1327 let tail = self
1328 .newest_selection::<Point>(&display_map.buffer_snapshot)
1329 .tail();
1330 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1331
1332 self.select_columns(
1333 tail.to_display_point(&display_map),
1334 position,
1335 overshoot,
1336 &display_map,
1337 cx,
1338 );
1339 }
1340
1341 fn update_selection(
1342 &mut self,
1343 position: DisplayPoint,
1344 overshoot: u32,
1345 scroll_position: Vector2F,
1346 cx: &mut ViewContext<Self>,
1347 ) {
1348 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1349
1350 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1351 let tail = tail.to_display_point(&display_map);
1352 self.select_columns(tail, position, overshoot, &display_map, cx);
1353 } else if let Some(mut pending) = self.pending_selection.clone() {
1354 let buffer = self.buffer.read(cx).snapshot(cx);
1355 let head;
1356 let tail;
1357 match &pending.mode {
1358 SelectMode::Character => {
1359 head = position.to_point(&display_map);
1360 tail = pending.selection.tail().to_point(&buffer);
1361 }
1362 SelectMode::Word(original_range) => {
1363 let original_display_range = original_range.start.to_display_point(&display_map)
1364 ..original_range.end.to_display_point(&display_map);
1365 let original_buffer_range = original_display_range.start.to_point(&display_map)
1366 ..original_display_range.end.to_point(&display_map);
1367 if movement::is_inside_word(&display_map, position)
1368 || original_display_range.contains(&position)
1369 {
1370 let word_range = movement::surrounding_word(&display_map, position);
1371 if word_range.start < original_display_range.start {
1372 head = word_range.start.to_point(&display_map);
1373 } else {
1374 head = word_range.end.to_point(&display_map);
1375 }
1376 } else {
1377 head = position.to_point(&display_map);
1378 }
1379
1380 if head <= original_buffer_range.start {
1381 tail = original_buffer_range.end;
1382 } else {
1383 tail = original_buffer_range.start;
1384 }
1385 }
1386 SelectMode::Line(original_range) => {
1387 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1388
1389 let position = display_map
1390 .clip_point(position, Bias::Left)
1391 .to_point(&display_map);
1392 let line_start = display_map.prev_line_boundary(position).0;
1393 let next_line_start = buffer.clip_point(
1394 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1395 Bias::Left,
1396 );
1397
1398 if line_start < original_range.start {
1399 head = line_start
1400 } else {
1401 head = next_line_start
1402 }
1403
1404 if head <= original_range.start {
1405 tail = original_range.end;
1406 } else {
1407 tail = original_range.start;
1408 }
1409 }
1410 SelectMode::All => {
1411 return;
1412 }
1413 };
1414
1415 if head < tail {
1416 pending.selection.start = buffer.anchor_before(head);
1417 pending.selection.end = buffer.anchor_before(tail);
1418 pending.selection.reversed = true;
1419 } else {
1420 pending.selection.start = buffer.anchor_before(tail);
1421 pending.selection.end = buffer.anchor_before(head);
1422 pending.selection.reversed = false;
1423 }
1424 self.set_selections(self.selections.clone(), Some(pending), cx);
1425 } else {
1426 log::error!("update_selection dispatched with no pending selection");
1427 return;
1428 }
1429
1430 self.set_scroll_position(scroll_position, cx);
1431 cx.notify();
1432 }
1433
1434 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1435 self.columnar_selection_tail.take();
1436 if self.pending_selection.is_some() {
1437 let selections = self.local_selections::<usize>(cx);
1438 self.update_selections(selections, None, cx);
1439 }
1440 }
1441
1442 fn select_columns(
1443 &mut self,
1444 tail: DisplayPoint,
1445 head: DisplayPoint,
1446 overshoot: u32,
1447 display_map: &DisplaySnapshot,
1448 cx: &mut ViewContext<Self>,
1449 ) {
1450 let start_row = cmp::min(tail.row(), head.row());
1451 let end_row = cmp::max(tail.row(), head.row());
1452 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1453 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1454 let reversed = start_column < tail.column();
1455
1456 let selections = (start_row..=end_row)
1457 .filter_map(|row| {
1458 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1459 let start = display_map
1460 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1461 .to_point(&display_map);
1462 let end = display_map
1463 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1464 .to_point(&display_map);
1465 Some(Selection {
1466 id: post_inc(&mut self.next_selection_id),
1467 start,
1468 end,
1469 reversed,
1470 goal: SelectionGoal::None,
1471 })
1472 } else {
1473 None
1474 }
1475 })
1476 .collect::<Vec<_>>();
1477
1478 self.update_selections(selections, None, cx);
1479 cx.notify();
1480 }
1481
1482 pub fn is_selecting(&self) -> bool {
1483 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1484 }
1485
1486 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1487 if self.take_rename(cx).is_some() {
1488 return;
1489 }
1490
1491 if self.hide_context_menu(cx).is_some() {
1492 return;
1493 }
1494
1495 if self.snippet_stack.pop().is_some() {
1496 return;
1497 }
1498
1499 if self.mode != EditorMode::Full {
1500 cx.propagate_action();
1501 return;
1502 }
1503
1504 if self.active_diagnostics.is_some() {
1505 self.dismiss_diagnostics(cx);
1506 } else if let Some(pending) = self.pending_selection.clone() {
1507 let mut selections = self.selections.clone();
1508 if selections.is_empty() {
1509 selections = Arc::from([pending.selection]);
1510 }
1511 self.set_selections(selections, None, cx);
1512 self.request_autoscroll(Autoscroll::Fit, cx);
1513 } else {
1514 let buffer = self.buffer.read(cx).snapshot(cx);
1515 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1516 if self.selection_count() == 1 {
1517 if oldest_selection.is_empty() {
1518 cx.propagate_action();
1519 return;
1520 }
1521
1522 oldest_selection.start = oldest_selection.head().clone();
1523 oldest_selection.end = oldest_selection.head().clone();
1524 }
1525 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1526 }
1527 }
1528
1529 #[cfg(any(test, feature = "test-support"))]
1530 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1531 &self,
1532 cx: &mut MutableAppContext,
1533 ) -> Vec<Range<D>> {
1534 self.local_selections::<D>(cx)
1535 .iter()
1536 .map(|s| {
1537 if s.reversed {
1538 s.end.clone()..s.start.clone()
1539 } else {
1540 s.start.clone()..s.end.clone()
1541 }
1542 })
1543 .collect()
1544 }
1545
1546 #[cfg(any(test, feature = "test-support"))]
1547 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1548 let display_map = self
1549 .display_map
1550 .update(cx, |display_map, cx| display_map.snapshot(cx));
1551 self.selections
1552 .iter()
1553 .chain(
1554 self.pending_selection
1555 .as_ref()
1556 .map(|pending| &pending.selection),
1557 )
1558 .map(|s| {
1559 if s.reversed {
1560 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1561 } else {
1562 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1563 }
1564 })
1565 .collect()
1566 }
1567
1568 pub fn select_ranges<I, T>(
1569 &mut self,
1570 ranges: I,
1571 autoscroll: Option<Autoscroll>,
1572 cx: &mut ViewContext<Self>,
1573 ) where
1574 I: IntoIterator<Item = Range<T>>,
1575 T: ToOffset,
1576 {
1577 let buffer = self.buffer.read(cx).snapshot(cx);
1578 let selections = ranges
1579 .into_iter()
1580 .map(|range| {
1581 let mut start = range.start.to_offset(&buffer);
1582 let mut end = range.end.to_offset(&buffer);
1583 let reversed = if start > end {
1584 mem::swap(&mut start, &mut end);
1585 true
1586 } else {
1587 false
1588 };
1589 Selection {
1590 id: post_inc(&mut self.next_selection_id),
1591 start,
1592 end,
1593 reversed,
1594 goal: SelectionGoal::None,
1595 }
1596 })
1597 .collect::<Vec<_>>();
1598 self.update_selections(selections, autoscroll, cx);
1599 }
1600
1601 #[cfg(any(test, feature = "test-support"))]
1602 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1603 where
1604 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1605 {
1606 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1607 let selections = ranges
1608 .into_iter()
1609 .map(|range| {
1610 let mut start = range.start;
1611 let mut end = range.end;
1612 let reversed = if start > end {
1613 mem::swap(&mut start, &mut end);
1614 true
1615 } else {
1616 false
1617 };
1618 Selection {
1619 id: post_inc(&mut self.next_selection_id),
1620 start: start.to_point(&display_map),
1621 end: end.to_point(&display_map),
1622 reversed,
1623 goal: SelectionGoal::None,
1624 }
1625 })
1626 .collect();
1627 self.update_selections(selections, None, cx);
1628 }
1629
1630 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1631 let text = action.0.as_ref();
1632 if !self.skip_autoclose_end(text, cx) {
1633 self.start_transaction(cx);
1634 self.insert(text, cx);
1635 self.autoclose_pairs(cx);
1636 self.end_transaction(cx);
1637 self.trigger_completion_on_input(text, cx);
1638 }
1639 }
1640
1641 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1642 self.start_transaction(cx);
1643 let mut old_selections = SmallVec::<[_; 32]>::new();
1644 {
1645 let selections = self.local_selections::<usize>(cx);
1646 let buffer = self.buffer.read(cx).snapshot(cx);
1647 for selection in selections.iter() {
1648 let start_point = selection.start.to_point(&buffer);
1649 let indent = buffer
1650 .indent_column_for_line(start_point.row)
1651 .min(start_point.column);
1652 let start = selection.start;
1653 let end = selection.end;
1654
1655 let mut insert_extra_newline = false;
1656 if let Some(language) = buffer.language() {
1657 let leading_whitespace_len = buffer
1658 .reversed_chars_at(start)
1659 .take_while(|c| c.is_whitespace() && *c != '\n')
1660 .map(|c| c.len_utf8())
1661 .sum::<usize>();
1662
1663 let trailing_whitespace_len = buffer
1664 .chars_at(end)
1665 .take_while(|c| c.is_whitespace() && *c != '\n')
1666 .map(|c| c.len_utf8())
1667 .sum::<usize>();
1668
1669 insert_extra_newline = language.brackets().iter().any(|pair| {
1670 let pair_start = pair.start.trim_end();
1671 let pair_end = pair.end.trim_start();
1672
1673 pair.newline
1674 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1675 && buffer.contains_str_at(
1676 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1677 pair_start,
1678 )
1679 });
1680 }
1681
1682 old_selections.push((
1683 selection.id,
1684 buffer.anchor_after(end),
1685 start..end,
1686 indent,
1687 insert_extra_newline,
1688 ));
1689 }
1690 }
1691
1692 self.buffer.update(cx, |buffer, cx| {
1693 let mut delta = 0_isize;
1694 let mut pending_edit: Option<PendingEdit> = None;
1695 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1696 if pending_edit.as_ref().map_or(false, |pending| {
1697 pending.indent != *indent
1698 || pending.insert_extra_newline != *insert_extra_newline
1699 }) {
1700 let pending = pending_edit.take().unwrap();
1701 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1702 new_text.push('\n');
1703 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1704 if pending.insert_extra_newline {
1705 new_text = new_text.repeat(2);
1706 }
1707 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1708 delta += pending.delta;
1709 }
1710
1711 let start = (range.start as isize + delta) as usize;
1712 let end = (range.end as isize + delta) as usize;
1713 let mut text_len = *indent as usize + 1;
1714 if *insert_extra_newline {
1715 text_len *= 2;
1716 }
1717
1718 let pending = pending_edit.get_or_insert_with(Default::default);
1719 pending.delta += text_len as isize - (end - start) as isize;
1720 pending.indent = *indent;
1721 pending.insert_extra_newline = *insert_extra_newline;
1722 pending.ranges.push(start..end);
1723 }
1724
1725 let pending = pending_edit.unwrap();
1726 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1727 new_text.push('\n');
1728 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1729 if pending.insert_extra_newline {
1730 new_text = new_text.repeat(2);
1731 }
1732 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1733
1734 let buffer = buffer.read(cx);
1735 self.selections = self
1736 .selections
1737 .iter()
1738 .cloned()
1739 .zip(old_selections)
1740 .map(
1741 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1742 let mut cursor = end_anchor.to_point(&buffer);
1743 if insert_extra_newline {
1744 cursor.row -= 1;
1745 cursor.column = buffer.line_len(cursor.row);
1746 }
1747 let anchor = buffer.anchor_after(cursor);
1748 new_selection.start = anchor.clone();
1749 new_selection.end = anchor;
1750 new_selection
1751 },
1752 )
1753 .collect();
1754 });
1755
1756 self.request_autoscroll(Autoscroll::Fit, cx);
1757 self.end_transaction(cx);
1758
1759 #[derive(Default)]
1760 struct PendingEdit {
1761 indent: u32,
1762 insert_extra_newline: bool,
1763 delta: isize,
1764 ranges: SmallVec<[Range<usize>; 32]>,
1765 }
1766 }
1767
1768 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1769 self.start_transaction(cx);
1770
1771 let old_selections = self.local_selections::<usize>(cx);
1772 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1773 let anchors = {
1774 let snapshot = buffer.read(cx);
1775 old_selections
1776 .iter()
1777 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1778 .collect::<Vec<_>>()
1779 };
1780 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1781 buffer.edit_with_autoindent(edit_ranges, text, cx);
1782 anchors
1783 });
1784
1785 let selections = {
1786 let snapshot = self.buffer.read(cx).read(cx);
1787 selection_anchors
1788 .into_iter()
1789 .map(|(id, goal, position)| {
1790 let position = position.to_offset(&snapshot);
1791 Selection {
1792 id,
1793 start: position,
1794 end: position,
1795 goal,
1796 reversed: false,
1797 }
1798 })
1799 .collect()
1800 };
1801 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1802 self.end_transaction(cx);
1803 }
1804
1805 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1806 let selection = self.newest_anchor_selection();
1807 if self
1808 .buffer
1809 .read(cx)
1810 .is_completion_trigger(selection.head(), text, cx)
1811 {
1812 self.show_completions(&ShowCompletions, cx);
1813 } else {
1814 self.hide_context_menu(cx);
1815 }
1816 }
1817
1818 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1819 let selections = self.local_selections::<usize>(cx);
1820 let mut bracket_pair_state = None;
1821 let mut new_selections = None;
1822 self.buffer.update(cx, |buffer, cx| {
1823 let mut snapshot = buffer.snapshot(cx);
1824 let left_biased_selections = selections
1825 .iter()
1826 .map(|selection| Selection {
1827 id: selection.id,
1828 start: snapshot.anchor_before(selection.start),
1829 end: snapshot.anchor_before(selection.end),
1830 reversed: selection.reversed,
1831 goal: selection.goal,
1832 })
1833 .collect::<Vec<_>>();
1834
1835 let autoclose_pair = snapshot.language().and_then(|language| {
1836 let first_selection_start = selections.first().unwrap().start;
1837 let pair = language.brackets().iter().find(|pair| {
1838 snapshot.contains_str_at(
1839 first_selection_start.saturating_sub(pair.start.len()),
1840 &pair.start,
1841 )
1842 });
1843 pair.and_then(|pair| {
1844 let should_autoclose = selections[1..].iter().all(|selection| {
1845 snapshot.contains_str_at(
1846 selection.start.saturating_sub(pair.start.len()),
1847 &pair.start,
1848 )
1849 });
1850
1851 if should_autoclose {
1852 Some(pair.clone())
1853 } else {
1854 None
1855 }
1856 })
1857 });
1858
1859 if let Some(pair) = autoclose_pair {
1860 let selection_ranges = selections
1861 .iter()
1862 .map(|selection| {
1863 let start = selection.start.to_offset(&snapshot);
1864 start..start
1865 })
1866 .collect::<SmallVec<[_; 32]>>();
1867
1868 buffer.edit(selection_ranges, &pair.end, cx);
1869 snapshot = buffer.snapshot(cx);
1870
1871 new_selections = Some(
1872 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1873 .collect::<Vec<_>>(),
1874 );
1875
1876 if pair.end.len() == 1 {
1877 let mut delta = 0;
1878 bracket_pair_state = Some(BracketPairState {
1879 ranges: selections
1880 .iter()
1881 .map(move |selection| {
1882 let offset = selection.start + delta;
1883 delta += 1;
1884 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1885 })
1886 .collect(),
1887 pair,
1888 });
1889 }
1890 }
1891 });
1892
1893 if let Some(new_selections) = new_selections {
1894 self.update_selections(new_selections, None, cx);
1895 }
1896 if let Some(bracket_pair_state) = bracket_pair_state {
1897 self.autoclose_stack.push(bracket_pair_state);
1898 }
1899 }
1900
1901 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1902 let old_selections = self.local_selections::<usize>(cx);
1903 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1904 autoclose_pair
1905 } else {
1906 return false;
1907 };
1908 if text != autoclose_pair.pair.end {
1909 return false;
1910 }
1911
1912 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1913
1914 let buffer = self.buffer.read(cx).snapshot(cx);
1915 if old_selections
1916 .iter()
1917 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1918 .all(|(selection, autoclose_range)| {
1919 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1920 selection.is_empty() && selection.start == autoclose_range_end
1921 })
1922 {
1923 let new_selections = old_selections
1924 .into_iter()
1925 .map(|selection| {
1926 let cursor = selection.start + 1;
1927 Selection {
1928 id: selection.id,
1929 start: cursor,
1930 end: cursor,
1931 reversed: false,
1932 goal: SelectionGoal::None,
1933 }
1934 })
1935 .collect();
1936 self.autoclose_stack.pop();
1937 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1938 true
1939 } else {
1940 false
1941 }
1942 }
1943
1944 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1945 let offset = position.to_offset(buffer);
1946 let (word_range, kind) = buffer.surrounding_word(offset);
1947 if offset > word_range.start && kind == Some(CharKind::Word) {
1948 Some(
1949 buffer
1950 .text_for_range(word_range.start..offset)
1951 .collect::<String>(),
1952 )
1953 } else {
1954 None
1955 }
1956 }
1957
1958 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1959 if self.pending_rename.is_some() {
1960 return;
1961 }
1962
1963 let project = if let Some(project) = self.project.clone() {
1964 project
1965 } else {
1966 return;
1967 };
1968
1969 let position = self.newest_anchor_selection().head();
1970 let (buffer, buffer_position) = if let Some(output) = self
1971 .buffer
1972 .read(cx)
1973 .text_anchor_for_position(position.clone(), cx)
1974 {
1975 output
1976 } else {
1977 return;
1978 };
1979
1980 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1981 let completions = project.update(cx, |project, cx| {
1982 project.completions(&buffer, buffer_position.clone(), cx)
1983 });
1984
1985 let id = post_inc(&mut self.next_completion_id);
1986 let task = cx.spawn_weak(|this, mut cx| {
1987 async move {
1988 let completions = completions.await?;
1989 if completions.is_empty() {
1990 return Ok(());
1991 }
1992
1993 let mut menu = CompletionsMenu {
1994 id,
1995 initial_position: position,
1996 match_candidates: completions
1997 .iter()
1998 .enumerate()
1999 .map(|(id, completion)| {
2000 StringMatchCandidate::new(
2001 id,
2002 completion.label.text[completion.label.filter_range.clone()].into(),
2003 )
2004 })
2005 .collect(),
2006 buffer,
2007 completions: completions.into(),
2008 matches: Vec::new().into(),
2009 selected_item: 0,
2010 list: Default::default(),
2011 };
2012
2013 menu.filter(query.as_deref(), cx.background()).await;
2014
2015 if let Some(this) = this.upgrade(&cx) {
2016 this.update(&mut cx, |this, cx| {
2017 match this.context_menu.as_ref() {
2018 None => {}
2019 Some(ContextMenu::Completions(prev_menu)) => {
2020 if prev_menu.id > menu.id {
2021 return;
2022 }
2023 }
2024 _ => return,
2025 }
2026
2027 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2028 if this.focused {
2029 this.show_context_menu(ContextMenu::Completions(menu), cx);
2030 }
2031
2032 cx.notify();
2033 });
2034 }
2035 Ok::<_, anyhow::Error>(())
2036 }
2037 .log_err()
2038 });
2039 self.completion_tasks.push((id, task));
2040 }
2041
2042 pub fn confirm_completion(
2043 &mut self,
2044 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2045 cx: &mut ViewContext<Self>,
2046 ) -> Option<Task<Result<()>>> {
2047 use language::ToOffset as _;
2048
2049 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2050 menu
2051 } else {
2052 return None;
2053 };
2054
2055 let mat = completions_menu
2056 .matches
2057 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2058 let buffer_handle = completions_menu.buffer;
2059 let completion = completions_menu.completions.get(mat.candidate_id)?;
2060
2061 let snippet;
2062 let text;
2063 if completion.is_snippet() {
2064 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2065 text = snippet.as_ref().unwrap().text.clone();
2066 } else {
2067 snippet = None;
2068 text = completion.new_text.clone();
2069 };
2070 let buffer = buffer_handle.read(cx);
2071 let old_range = completion.old_range.to_offset(&buffer);
2072 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2073
2074 let selections = self.local_selections::<usize>(cx);
2075 let newest_selection = self.newest_anchor_selection();
2076 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2077 return None;
2078 }
2079
2080 let lookbehind = newest_selection
2081 .start
2082 .text_anchor
2083 .to_offset(buffer)
2084 .saturating_sub(old_range.start);
2085 let lookahead = old_range
2086 .end
2087 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2088 let mut common_prefix_len = old_text
2089 .bytes()
2090 .zip(text.bytes())
2091 .take_while(|(a, b)| a == b)
2092 .count();
2093
2094 let snapshot = self.buffer.read(cx).snapshot(cx);
2095 let mut ranges = Vec::new();
2096 for selection in &selections {
2097 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2098 let start = selection.start.saturating_sub(lookbehind);
2099 let end = selection.end + lookahead;
2100 ranges.push(start + common_prefix_len..end);
2101 } else {
2102 common_prefix_len = 0;
2103 ranges.clear();
2104 ranges.extend(selections.iter().map(|s| {
2105 if s.id == newest_selection.id {
2106 old_range.clone()
2107 } else {
2108 s.start..s.end
2109 }
2110 }));
2111 break;
2112 }
2113 }
2114 let text = &text[common_prefix_len..];
2115
2116 self.start_transaction(cx);
2117 if let Some(mut snippet) = snippet {
2118 snippet.text = text.to_string();
2119 for tabstop in snippet.tabstops.iter_mut().flatten() {
2120 tabstop.start -= common_prefix_len as isize;
2121 tabstop.end -= common_prefix_len as isize;
2122 }
2123
2124 self.insert_snippet(&ranges, snippet, cx).log_err();
2125 } else {
2126 self.buffer.update(cx, |buffer, cx| {
2127 buffer.edit_with_autoindent(ranges, text, cx);
2128 });
2129 }
2130 self.end_transaction(cx);
2131
2132 let project = self.project.clone()?;
2133 let apply_edits = project.update(cx, |project, cx| {
2134 project.apply_additional_edits_for_completion(
2135 buffer_handle,
2136 completion.clone(),
2137 true,
2138 cx,
2139 )
2140 });
2141 Some(cx.foreground().spawn(async move {
2142 apply_edits.await?;
2143 Ok(())
2144 }))
2145 }
2146
2147 pub fn toggle_code_actions(
2148 &mut self,
2149 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2150 cx: &mut ViewContext<Self>,
2151 ) {
2152 if matches!(
2153 self.context_menu.as_ref(),
2154 Some(ContextMenu::CodeActions(_))
2155 ) {
2156 self.context_menu.take();
2157 cx.notify();
2158 return;
2159 }
2160
2161 let mut task = self.code_actions_task.take();
2162 cx.spawn_weak(|this, mut cx| async move {
2163 while let Some(prev_task) = task {
2164 prev_task.await;
2165 task = this
2166 .upgrade(&cx)
2167 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2168 }
2169
2170 if let Some(this) = this.upgrade(&cx) {
2171 this.update(&mut cx, |this, cx| {
2172 if this.focused {
2173 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2174 this.show_context_menu(
2175 ContextMenu::CodeActions(CodeActionsMenu {
2176 buffer,
2177 actions,
2178 selected_item: Default::default(),
2179 list: Default::default(),
2180 deployed_from_indicator,
2181 }),
2182 cx,
2183 );
2184 }
2185 }
2186 })
2187 }
2188 Ok::<_, anyhow::Error>(())
2189 })
2190 .detach_and_log_err(cx);
2191 }
2192
2193 pub fn confirm_code_action(
2194 workspace: &mut Workspace,
2195 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2196 cx: &mut ViewContext<Workspace>,
2197 ) -> Option<Task<Result<()>>> {
2198 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2199 let actions_menu = if let ContextMenu::CodeActions(menu) =
2200 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2201 {
2202 menu
2203 } else {
2204 return None;
2205 };
2206 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2207 let action = actions_menu.actions.get(action_ix)?.clone();
2208 let title = action.lsp_action.title.clone();
2209 let buffer = actions_menu.buffer;
2210
2211 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2212 project.apply_code_action(buffer, action, true, cx)
2213 });
2214 Some(cx.spawn(|workspace, cx| async move {
2215 let project_transaction = apply_code_actions.await?;
2216 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2217 }))
2218 }
2219
2220 async fn open_project_transaction(
2221 this: ViewHandle<Editor>,
2222 workspace: ViewHandle<Workspace>,
2223 transaction: ProjectTransaction,
2224 title: String,
2225 mut cx: AsyncAppContext,
2226 ) -> Result<()> {
2227 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2228
2229 // If the code action's edits are all contained within this editor, then
2230 // avoid opening a new editor to display them.
2231 let mut entries = transaction.0.iter();
2232 if let Some((buffer, transaction)) = entries.next() {
2233 if entries.next().is_none() {
2234 let excerpt = this.read_with(&cx, |editor, cx| {
2235 editor
2236 .buffer()
2237 .read(cx)
2238 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2239 });
2240 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2241 if excerpted_buffer == *buffer {
2242 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2243 let excerpt_range = excerpt_range.to_offset(&snapshot);
2244 if snapshot
2245 .edited_ranges_for_transaction(transaction)
2246 .all(|range| {
2247 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2248 })
2249 {
2250 return Ok(());
2251 }
2252 }
2253 }
2254 }
2255 }
2256
2257 let mut ranges_to_highlight = Vec::new();
2258 let excerpt_buffer = cx.add_model(|cx| {
2259 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2260 for (buffer, transaction) in &transaction.0 {
2261 let snapshot = buffer.read(cx).snapshot();
2262 ranges_to_highlight.extend(
2263 multibuffer.push_excerpts_with_context_lines(
2264 buffer.clone(),
2265 snapshot
2266 .edited_ranges_for_transaction::<usize>(transaction)
2267 .collect(),
2268 1,
2269 cx,
2270 ),
2271 );
2272 }
2273 multibuffer.push_transaction(&transaction.0);
2274 multibuffer
2275 });
2276
2277 workspace.update(&mut cx, |workspace, cx| {
2278 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2279 if let Some(editor) = editor.act_as::<Self>(cx) {
2280 editor.update(cx, |editor, cx| {
2281 let color = editor.style(cx).highlighted_line_background;
2282 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
2283 });
2284 }
2285 });
2286
2287 Ok(())
2288 }
2289
2290 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2291 let project = self.project.as_ref()?;
2292 let buffer = self.buffer.read(cx);
2293 let newest_selection = self.newest_anchor_selection().clone();
2294 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2295 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2296 if start_buffer != end_buffer {
2297 return None;
2298 }
2299
2300 let actions = project.update(cx, |project, cx| {
2301 project.code_actions(&start_buffer, start..end, cx)
2302 });
2303 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2304 let actions = actions.await;
2305 if let Some(this) = this.upgrade(&cx) {
2306 this.update(&mut cx, |this, cx| {
2307 this.available_code_actions = actions.log_err().and_then(|actions| {
2308 if actions.is_empty() {
2309 None
2310 } else {
2311 Some((start_buffer, actions.into()))
2312 }
2313 });
2314 cx.notify();
2315 })
2316 }
2317 }));
2318 None
2319 }
2320
2321 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2322 let project = self.project.as_ref()?;
2323 let buffer = self.buffer.read(cx);
2324 let newest_selection = self.newest_anchor_selection().clone();
2325 let cursor_position = newest_selection.head();
2326 let (cursor_buffer, cursor_buffer_position) =
2327 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2328 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2329 if cursor_buffer != tail_buffer {
2330 return None;
2331 }
2332
2333 let highlights = project.update(cx, |project, cx| {
2334 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2335 });
2336
2337 enum DocumentHighlightRead {}
2338 enum DocumentHighlightWrite {}
2339
2340 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2341 let highlights = highlights.log_err().await;
2342 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2343 this.update(&mut cx, |this, cx| {
2344 let buffer_id = cursor_position.buffer_id;
2345 let excerpt_id = cursor_position.excerpt_id.clone();
2346 let style = this.style(cx);
2347 let read_background = style.document_highlight_read_background;
2348 let write_background = style.document_highlight_write_background;
2349 let buffer = this.buffer.read(cx);
2350 if !buffer
2351 .text_anchor_for_position(cursor_position, cx)
2352 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2353 {
2354 return;
2355 }
2356
2357 let mut write_ranges = Vec::new();
2358 let mut read_ranges = Vec::new();
2359 for highlight in highlights {
2360 let range = Anchor {
2361 buffer_id,
2362 excerpt_id: excerpt_id.clone(),
2363 text_anchor: highlight.range.start,
2364 }..Anchor {
2365 buffer_id,
2366 excerpt_id: excerpt_id.clone(),
2367 text_anchor: highlight.range.end,
2368 };
2369 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2370 write_ranges.push(range);
2371 } else {
2372 read_ranges.push(range);
2373 }
2374 }
2375
2376 this.highlight_ranges::<DocumentHighlightRead>(
2377 read_ranges,
2378 read_background,
2379 cx,
2380 );
2381 this.highlight_ranges::<DocumentHighlightWrite>(
2382 write_ranges,
2383 write_background,
2384 cx,
2385 );
2386 cx.notify();
2387 });
2388 }
2389 }));
2390 None
2391 }
2392
2393 pub fn render_code_actions_indicator(
2394 &self,
2395 style: &EditorStyle,
2396 cx: &mut ViewContext<Self>,
2397 ) -> Option<ElementBox> {
2398 if self.available_code_actions.is_some() {
2399 enum Tag {}
2400 Some(
2401 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2402 Svg::new("icons/zap.svg")
2403 .with_color(style.code_actions_indicator)
2404 .boxed()
2405 })
2406 .with_cursor_style(CursorStyle::PointingHand)
2407 .with_padding(Padding::uniform(3.))
2408 .on_mouse_down(|cx| {
2409 cx.dispatch_action(ToggleCodeActions(true));
2410 })
2411 .boxed(),
2412 )
2413 } else {
2414 None
2415 }
2416 }
2417
2418 pub fn context_menu_visible(&self) -> bool {
2419 self.context_menu
2420 .as_ref()
2421 .map_or(false, |menu| menu.visible())
2422 }
2423
2424 pub fn render_context_menu(
2425 &self,
2426 cursor_position: DisplayPoint,
2427 style: EditorStyle,
2428 cx: &AppContext,
2429 ) -> Option<(DisplayPoint, ElementBox)> {
2430 self.context_menu
2431 .as_ref()
2432 .map(|menu| menu.render(cursor_position, style, cx))
2433 }
2434
2435 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2436 if !matches!(menu, ContextMenu::Completions(_)) {
2437 self.completion_tasks.clear();
2438 }
2439 self.context_menu = Some(menu);
2440 cx.notify();
2441 }
2442
2443 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2444 cx.notify();
2445 self.completion_tasks.clear();
2446 self.context_menu.take()
2447 }
2448
2449 pub fn insert_snippet(
2450 &mut self,
2451 insertion_ranges: &[Range<usize>],
2452 snippet: Snippet,
2453 cx: &mut ViewContext<Self>,
2454 ) -> Result<()> {
2455 let tabstops = self.buffer.update(cx, |buffer, cx| {
2456 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2457
2458 let snapshot = &*buffer.read(cx);
2459 let snippet = &snippet;
2460 snippet
2461 .tabstops
2462 .iter()
2463 .map(|tabstop| {
2464 let mut tabstop_ranges = tabstop
2465 .iter()
2466 .flat_map(|tabstop_range| {
2467 let mut delta = 0 as isize;
2468 insertion_ranges.iter().map(move |insertion_range| {
2469 let insertion_start = insertion_range.start as isize + delta;
2470 delta +=
2471 snippet.text.len() as isize - insertion_range.len() as isize;
2472
2473 let start = snapshot.anchor_before(
2474 (insertion_start + tabstop_range.start) as usize,
2475 );
2476 let end = snapshot
2477 .anchor_after((insertion_start + tabstop_range.end) as usize);
2478 start..end
2479 })
2480 })
2481 .collect::<Vec<_>>();
2482 tabstop_ranges
2483 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2484 tabstop_ranges
2485 })
2486 .collect::<Vec<_>>()
2487 });
2488
2489 if let Some(tabstop) = tabstops.first() {
2490 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2491 self.snippet_stack.push(SnippetState {
2492 active_index: 0,
2493 ranges: tabstops,
2494 });
2495 }
2496
2497 Ok(())
2498 }
2499
2500 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2501 self.move_to_snippet_tabstop(Bias::Right, cx)
2502 }
2503
2504 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2505 self.move_to_snippet_tabstop(Bias::Left, cx);
2506 }
2507
2508 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2509 let buffer = self.buffer.read(cx).snapshot(cx);
2510
2511 if let Some(snippet) = self.snippet_stack.last_mut() {
2512 match bias {
2513 Bias::Left => {
2514 if snippet.active_index > 0 {
2515 snippet.active_index -= 1;
2516 } else {
2517 return false;
2518 }
2519 }
2520 Bias::Right => {
2521 if snippet.active_index + 1 < snippet.ranges.len() {
2522 snippet.active_index += 1;
2523 } else {
2524 return false;
2525 }
2526 }
2527 }
2528 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2529 let new_selections = current_ranges
2530 .iter()
2531 .map(|new_range| {
2532 let new_range = new_range.to_offset(&buffer);
2533 Selection {
2534 id: post_inc(&mut self.next_selection_id),
2535 start: new_range.start,
2536 end: new_range.end,
2537 reversed: false,
2538 goal: SelectionGoal::None,
2539 }
2540 })
2541 .collect();
2542
2543 // Remove the snippet state when moving to the last tabstop.
2544 if snippet.active_index + 1 == snippet.ranges.len() {
2545 self.snippet_stack.pop();
2546 }
2547
2548 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2549 return true;
2550 }
2551 self.snippet_stack.pop();
2552 }
2553
2554 false
2555 }
2556
2557 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2558 self.start_transaction(cx);
2559 self.select_all(&SelectAll, cx);
2560 self.insert("", cx);
2561 self.end_transaction(cx);
2562 }
2563
2564 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2565 self.start_transaction(cx);
2566 let mut selections = self.local_selections::<Point>(cx);
2567 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2568 for selection in &mut selections {
2569 if selection.is_empty() {
2570 let head = selection.head().to_display_point(&display_map);
2571 let cursor = movement::left(&display_map, head)
2572 .unwrap()
2573 .to_point(&display_map);
2574 selection.set_head(cursor);
2575 selection.goal = SelectionGoal::None;
2576 }
2577 }
2578 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2579 self.insert("", cx);
2580 self.end_transaction(cx);
2581 }
2582
2583 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2584 self.start_transaction(cx);
2585 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2586 let mut selections = self.local_selections::<Point>(cx);
2587 for selection in &mut selections {
2588 if selection.is_empty() {
2589 let head = selection.head().to_display_point(&display_map);
2590 let cursor = movement::right(&display_map, head)
2591 .unwrap()
2592 .to_point(&display_map);
2593 selection.set_head(cursor);
2594 selection.goal = SelectionGoal::None;
2595 }
2596 }
2597 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2598 self.insert(&"", cx);
2599 self.end_transaction(cx);
2600 }
2601
2602 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2603 if self.move_to_next_snippet_tabstop(cx) {
2604 return;
2605 }
2606
2607 self.start_transaction(cx);
2608 let tab_size = self.settings.borrow().tab_size;
2609 let mut selections = self.local_selections::<Point>(cx);
2610 let mut last_indent = None;
2611 self.buffer.update(cx, |buffer, cx| {
2612 for selection in &mut selections {
2613 if selection.is_empty() {
2614 let char_column = buffer
2615 .read(cx)
2616 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2617 .flat_map(str::chars)
2618 .count();
2619 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2620 buffer.edit(
2621 [selection.start..selection.start],
2622 " ".repeat(chars_to_next_tab_stop),
2623 cx,
2624 );
2625 selection.start.column += chars_to_next_tab_stop as u32;
2626 selection.end = selection.start;
2627 } else {
2628 let mut start_row = selection.start.row;
2629 let mut end_row = selection.end.row + 1;
2630
2631 // If a selection ends at the beginning of a line, don't indent
2632 // that last line.
2633 if selection.end.column == 0 {
2634 end_row -= 1;
2635 }
2636
2637 // Avoid re-indenting a row that has already been indented by a
2638 // previous selection, but still update this selection's column
2639 // to reflect that indentation.
2640 if let Some((last_indent_row, last_indent_len)) = last_indent {
2641 if last_indent_row == selection.start.row {
2642 selection.start.column += last_indent_len;
2643 start_row += 1;
2644 }
2645 if last_indent_row == selection.end.row {
2646 selection.end.column += last_indent_len;
2647 }
2648 }
2649
2650 for row in start_row..end_row {
2651 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2652 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2653 let row_start = Point::new(row, 0);
2654 buffer.edit(
2655 [row_start..row_start],
2656 " ".repeat(columns_to_next_tab_stop),
2657 cx,
2658 );
2659
2660 // Update this selection's endpoints to reflect the indentation.
2661 if row == selection.start.row {
2662 selection.start.column += columns_to_next_tab_stop as u32;
2663 }
2664 if row == selection.end.row {
2665 selection.end.column += columns_to_next_tab_stop as u32;
2666 }
2667
2668 last_indent = Some((row, columns_to_next_tab_stop as u32));
2669 }
2670 }
2671 }
2672 });
2673
2674 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2675 self.end_transaction(cx);
2676 }
2677
2678 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2679 if !self.snippet_stack.is_empty() {
2680 self.move_to_prev_snippet_tabstop(cx);
2681 return;
2682 }
2683
2684 self.start_transaction(cx);
2685 let tab_size = self.settings.borrow().tab_size;
2686 let selections = self.local_selections::<Point>(cx);
2687 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2688 let mut deletion_ranges = Vec::new();
2689 let mut last_outdent = None;
2690 {
2691 let buffer = self.buffer.read(cx).read(cx);
2692 for selection in &selections {
2693 let mut rows = selection.spanned_rows(false, &display_map);
2694
2695 // Avoid re-outdenting a row that has already been outdented by a
2696 // previous selection.
2697 if let Some(last_row) = last_outdent {
2698 if last_row == rows.start {
2699 rows.start += 1;
2700 }
2701 }
2702
2703 for row in rows {
2704 let column = buffer.indent_column_for_line(row) as usize;
2705 if column > 0 {
2706 let mut deletion_len = (column % tab_size) as u32;
2707 if deletion_len == 0 {
2708 deletion_len = tab_size as u32;
2709 }
2710 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2711 last_outdent = Some(row);
2712 }
2713 }
2714 }
2715 }
2716 self.buffer.update(cx, |buffer, cx| {
2717 buffer.edit(deletion_ranges, "", cx);
2718 });
2719
2720 self.update_selections(
2721 self.local_selections::<usize>(cx),
2722 Some(Autoscroll::Fit),
2723 cx,
2724 );
2725 self.end_transaction(cx);
2726 }
2727
2728 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2729 self.start_transaction(cx);
2730
2731 let selections = self.local_selections::<Point>(cx);
2732 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2733 let buffer = self.buffer.read(cx).snapshot(cx);
2734
2735 let mut new_cursors = Vec::new();
2736 let mut edit_ranges = Vec::new();
2737 let mut selections = selections.iter().peekable();
2738 while let Some(selection) = selections.next() {
2739 let mut rows = selection.spanned_rows(false, &display_map);
2740 let goal_display_column = selection.head().to_display_point(&display_map).column();
2741
2742 // Accumulate contiguous regions of rows that we want to delete.
2743 while let Some(next_selection) = selections.peek() {
2744 let next_rows = next_selection.spanned_rows(false, &display_map);
2745 if next_rows.start <= rows.end {
2746 rows.end = next_rows.end;
2747 selections.next().unwrap();
2748 } else {
2749 break;
2750 }
2751 }
2752
2753 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2754 let edit_end;
2755 let cursor_buffer_row;
2756 if buffer.max_point().row >= rows.end {
2757 // If there's a line after the range, delete the \n from the end of the row range
2758 // and position the cursor on the next line.
2759 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2760 cursor_buffer_row = rows.end;
2761 } else {
2762 // If there isn't a line after the range, delete the \n from the line before the
2763 // start of the row range and position the cursor there.
2764 edit_start = edit_start.saturating_sub(1);
2765 edit_end = buffer.len();
2766 cursor_buffer_row = rows.start.saturating_sub(1);
2767 }
2768
2769 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2770 *cursor.column_mut() =
2771 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2772
2773 new_cursors.push((
2774 selection.id,
2775 buffer.anchor_after(cursor.to_point(&display_map)),
2776 ));
2777 edit_ranges.push(edit_start..edit_end);
2778 }
2779
2780 let buffer = self.buffer.update(cx, |buffer, cx| {
2781 buffer.edit(edit_ranges, "", cx);
2782 buffer.snapshot(cx)
2783 });
2784 let new_selections = new_cursors
2785 .into_iter()
2786 .map(|(id, cursor)| {
2787 let cursor = cursor.to_point(&buffer);
2788 Selection {
2789 id,
2790 start: cursor,
2791 end: cursor,
2792 reversed: false,
2793 goal: SelectionGoal::None,
2794 }
2795 })
2796 .collect();
2797 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2798 self.end_transaction(cx);
2799 }
2800
2801 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2802 self.start_transaction(cx);
2803
2804 let selections = self.local_selections::<Point>(cx);
2805 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2806 let buffer = &display_map.buffer_snapshot;
2807
2808 let mut edits = Vec::new();
2809 let mut selections_iter = selections.iter().peekable();
2810 while let Some(selection) = selections_iter.next() {
2811 // Avoid duplicating the same lines twice.
2812 let mut rows = selection.spanned_rows(false, &display_map);
2813
2814 while let Some(next_selection) = selections_iter.peek() {
2815 let next_rows = next_selection.spanned_rows(false, &display_map);
2816 if next_rows.start <= rows.end - 1 {
2817 rows.end = next_rows.end;
2818 selections_iter.next().unwrap();
2819 } else {
2820 break;
2821 }
2822 }
2823
2824 // Copy the text from the selected row region and splice it at the start of the region.
2825 let start = Point::new(rows.start, 0);
2826 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2827 let text = buffer
2828 .text_for_range(start..end)
2829 .chain(Some("\n"))
2830 .collect::<String>();
2831 edits.push((start, text, rows.len() as u32));
2832 }
2833
2834 self.buffer.update(cx, |buffer, cx| {
2835 for (point, text, _) in edits.into_iter().rev() {
2836 buffer.edit(Some(point..point), text, cx);
2837 }
2838 });
2839
2840 self.request_autoscroll(Autoscroll::Fit, cx);
2841 self.end_transaction(cx);
2842 }
2843
2844 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2845 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2846 let buffer = self.buffer.read(cx).snapshot(cx);
2847
2848 let mut edits = Vec::new();
2849 let mut unfold_ranges = Vec::new();
2850 let mut refold_ranges = Vec::new();
2851
2852 let selections = self.local_selections::<Point>(cx);
2853 let mut selections = selections.iter().peekable();
2854 let mut contiguous_row_selections = Vec::new();
2855 let mut new_selections = Vec::new();
2856
2857 while let Some(selection) = selections.next() {
2858 // Find all the selections that span a contiguous row range
2859 contiguous_row_selections.push(selection.clone());
2860 let start_row = selection.start.row;
2861 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2862 display_map.next_line_boundary(selection.end).0.row + 1
2863 } else {
2864 selection.end.row
2865 };
2866
2867 while let Some(next_selection) = selections.peek() {
2868 if next_selection.start.row <= end_row {
2869 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2870 display_map.next_line_boundary(next_selection.end).0.row + 1
2871 } else {
2872 next_selection.end.row
2873 };
2874 contiguous_row_selections.push(selections.next().unwrap().clone());
2875 } else {
2876 break;
2877 }
2878 }
2879
2880 // Move the text spanned by the row range to be before the line preceding the row range
2881 if start_row > 0 {
2882 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2883 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2884 let insertion_point = display_map
2885 .prev_line_boundary(Point::new(start_row - 1, 0))
2886 .0;
2887
2888 // Don't move lines across excerpts
2889 if buffer
2890 .excerpt_boundaries_in_range((
2891 Bound::Excluded(insertion_point),
2892 Bound::Included(range_to_move.end),
2893 ))
2894 .next()
2895 .is_none()
2896 {
2897 let text = buffer
2898 .text_for_range(range_to_move.clone())
2899 .flat_map(|s| s.chars())
2900 .skip(1)
2901 .chain(['\n'])
2902 .collect::<String>();
2903
2904 edits.push((
2905 buffer.anchor_after(range_to_move.start)
2906 ..buffer.anchor_before(range_to_move.end),
2907 String::new(),
2908 ));
2909 let insertion_anchor = buffer.anchor_after(insertion_point);
2910 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2911
2912 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2913
2914 // Move selections up
2915 new_selections.extend(contiguous_row_selections.drain(..).map(
2916 |mut selection| {
2917 selection.start.row -= row_delta;
2918 selection.end.row -= row_delta;
2919 selection
2920 },
2921 ));
2922
2923 // Move folds up
2924 unfold_ranges.push(range_to_move.clone());
2925 for fold in display_map.folds_in_range(
2926 buffer.anchor_before(range_to_move.start)
2927 ..buffer.anchor_after(range_to_move.end),
2928 ) {
2929 let mut start = fold.start.to_point(&buffer);
2930 let mut end = fold.end.to_point(&buffer);
2931 start.row -= row_delta;
2932 end.row -= row_delta;
2933 refold_ranges.push(start..end);
2934 }
2935 }
2936 }
2937
2938 // If we didn't move line(s), preserve the existing selections
2939 new_selections.extend(contiguous_row_selections.drain(..));
2940 }
2941
2942 self.start_transaction(cx);
2943 self.unfold_ranges(unfold_ranges, cx);
2944 self.buffer.update(cx, |buffer, cx| {
2945 for (range, text) in edits {
2946 buffer.edit([range], text, cx);
2947 }
2948 });
2949 self.fold_ranges(refold_ranges, cx);
2950 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2951 self.end_transaction(cx);
2952 }
2953
2954 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2955 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2956 let buffer = self.buffer.read(cx).snapshot(cx);
2957
2958 let mut edits = Vec::new();
2959 let mut unfold_ranges = Vec::new();
2960 let mut refold_ranges = Vec::new();
2961
2962 let selections = self.local_selections::<Point>(cx);
2963 let mut selections = selections.iter().peekable();
2964 let mut contiguous_row_selections = Vec::new();
2965 let mut new_selections = Vec::new();
2966
2967 while let Some(selection) = selections.next() {
2968 // Find all the selections that span a contiguous row range
2969 contiguous_row_selections.push(selection.clone());
2970 let start_row = selection.start.row;
2971 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2972 display_map.next_line_boundary(selection.end).0.row + 1
2973 } else {
2974 selection.end.row
2975 };
2976
2977 while let Some(next_selection) = selections.peek() {
2978 if next_selection.start.row <= end_row {
2979 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2980 display_map.next_line_boundary(next_selection.end).0.row + 1
2981 } else {
2982 next_selection.end.row
2983 };
2984 contiguous_row_selections.push(selections.next().unwrap().clone());
2985 } else {
2986 break;
2987 }
2988 }
2989
2990 // Move the text spanned by the row range to be after the last line of the row range
2991 if end_row <= buffer.max_point().row {
2992 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2993 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2994
2995 // Don't move lines across excerpt boundaries
2996 if buffer
2997 .excerpt_boundaries_in_range((
2998 Bound::Excluded(range_to_move.start),
2999 Bound::Included(insertion_point),
3000 ))
3001 .next()
3002 .is_none()
3003 {
3004 let mut text = String::from("\n");
3005 text.extend(buffer.text_for_range(range_to_move.clone()));
3006 text.pop(); // Drop trailing newline
3007 edits.push((
3008 buffer.anchor_after(range_to_move.start)
3009 ..buffer.anchor_before(range_to_move.end),
3010 String::new(),
3011 ));
3012 let insertion_anchor = buffer.anchor_after(insertion_point);
3013 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3014
3015 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3016
3017 // Move selections down
3018 new_selections.extend(contiguous_row_selections.drain(..).map(
3019 |mut selection| {
3020 selection.start.row += row_delta;
3021 selection.end.row += row_delta;
3022 selection
3023 },
3024 ));
3025
3026 // Move folds down
3027 unfold_ranges.push(range_to_move.clone());
3028 for fold in display_map.folds_in_range(
3029 buffer.anchor_before(range_to_move.start)
3030 ..buffer.anchor_after(range_to_move.end),
3031 ) {
3032 let mut start = fold.start.to_point(&buffer);
3033 let mut end = fold.end.to_point(&buffer);
3034 start.row += row_delta;
3035 end.row += row_delta;
3036 refold_ranges.push(start..end);
3037 }
3038 }
3039 }
3040
3041 // If we didn't move line(s), preserve the existing selections
3042 new_selections.extend(contiguous_row_selections.drain(..));
3043 }
3044
3045 self.start_transaction(cx);
3046 self.unfold_ranges(unfold_ranges, cx);
3047 self.buffer.update(cx, |buffer, cx| {
3048 for (range, text) in edits {
3049 buffer.edit([range], text, cx);
3050 }
3051 });
3052 self.fold_ranges(refold_ranges, cx);
3053 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3054 self.end_transaction(cx);
3055 }
3056
3057 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3058 self.start_transaction(cx);
3059 let mut text = String::new();
3060 let mut selections = self.local_selections::<Point>(cx);
3061 let mut clipboard_selections = Vec::with_capacity(selections.len());
3062 {
3063 let buffer = self.buffer.read(cx).read(cx);
3064 let max_point = buffer.max_point();
3065 for selection in &mut selections {
3066 let is_entire_line = selection.is_empty();
3067 if is_entire_line {
3068 selection.start = Point::new(selection.start.row, 0);
3069 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3070 selection.goal = SelectionGoal::None;
3071 }
3072 let mut len = 0;
3073 for chunk in buffer.text_for_range(selection.start..selection.end) {
3074 text.push_str(chunk);
3075 len += chunk.len();
3076 }
3077 clipboard_selections.push(ClipboardSelection {
3078 len,
3079 is_entire_line,
3080 });
3081 }
3082 }
3083 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3084 self.insert("", cx);
3085 self.end_transaction(cx);
3086
3087 cx.as_mut()
3088 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3089 }
3090
3091 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3092 let selections = self.local_selections::<Point>(cx);
3093 let mut text = String::new();
3094 let mut clipboard_selections = Vec::with_capacity(selections.len());
3095 {
3096 let buffer = self.buffer.read(cx).read(cx);
3097 let max_point = buffer.max_point();
3098 for selection in selections.iter() {
3099 let mut start = selection.start;
3100 let mut end = selection.end;
3101 let is_entire_line = selection.is_empty();
3102 if is_entire_line {
3103 start = Point::new(start.row, 0);
3104 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3105 }
3106 let mut len = 0;
3107 for chunk in buffer.text_for_range(start..end) {
3108 text.push_str(chunk);
3109 len += chunk.len();
3110 }
3111 clipboard_selections.push(ClipboardSelection {
3112 len,
3113 is_entire_line,
3114 });
3115 }
3116 }
3117
3118 cx.as_mut()
3119 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3120 }
3121
3122 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3123 if let Some(item) = cx.as_mut().read_from_clipboard() {
3124 let clipboard_text = item.text();
3125 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3126 let mut selections = self.local_selections::<usize>(cx);
3127 let all_selections_were_entire_line =
3128 clipboard_selections.iter().all(|s| s.is_entire_line);
3129 if clipboard_selections.len() != selections.len() {
3130 clipboard_selections.clear();
3131 }
3132
3133 let mut delta = 0_isize;
3134 let mut start_offset = 0;
3135 for (i, selection) in selections.iter_mut().enumerate() {
3136 let to_insert;
3137 let entire_line;
3138 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3139 let end_offset = start_offset + clipboard_selection.len;
3140 to_insert = &clipboard_text[start_offset..end_offset];
3141 entire_line = clipboard_selection.is_entire_line;
3142 start_offset = end_offset
3143 } else {
3144 to_insert = clipboard_text.as_str();
3145 entire_line = all_selections_were_entire_line;
3146 }
3147
3148 selection.start = (selection.start as isize + delta) as usize;
3149 selection.end = (selection.end as isize + delta) as usize;
3150
3151 self.buffer.update(cx, |buffer, cx| {
3152 // If the corresponding selection was empty when this slice of the
3153 // clipboard text was written, then the entire line containing the
3154 // selection was copied. If this selection is also currently empty,
3155 // then paste the line before the current line of the buffer.
3156 let range = if selection.is_empty() && entire_line {
3157 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3158 let line_start = selection.start - column;
3159 line_start..line_start
3160 } else {
3161 selection.start..selection.end
3162 };
3163
3164 delta += to_insert.len() as isize - range.len() as isize;
3165 buffer.edit([range], to_insert, cx);
3166 selection.start += to_insert.len();
3167 selection.end = selection.start;
3168 });
3169 }
3170 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3171 } else {
3172 self.insert(clipboard_text, cx);
3173 }
3174 }
3175 }
3176
3177 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3178 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3179 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3180 self.set_selections(selections, None, cx);
3181 }
3182 self.request_autoscroll(Autoscroll::Fit, cx);
3183 }
3184 }
3185
3186 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3187 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3188 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3189 self.set_selections(selections, None, cx);
3190 }
3191 self.request_autoscroll(Autoscroll::Fit, cx);
3192 }
3193 }
3194
3195 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3196 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3197 let mut selections = self.local_selections::<Point>(cx);
3198 for selection in &mut selections {
3199 let start = selection.start.to_display_point(&display_map);
3200 let end = selection.end.to_display_point(&display_map);
3201
3202 if start != end {
3203 selection.end = selection.start.clone();
3204 } else {
3205 let cursor = movement::left(&display_map, start)
3206 .unwrap()
3207 .to_point(&display_map);
3208 selection.start = cursor.clone();
3209 selection.end = cursor;
3210 }
3211 selection.reversed = false;
3212 selection.goal = SelectionGoal::None;
3213 }
3214 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3215 }
3216
3217 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3218 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3219 let mut selections = self.local_selections::<Point>(cx);
3220 for selection in &mut selections {
3221 let head = selection.head().to_display_point(&display_map);
3222 let cursor = movement::left(&display_map, head)
3223 .unwrap()
3224 .to_point(&display_map);
3225 selection.set_head(cursor);
3226 selection.goal = SelectionGoal::None;
3227 }
3228 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3229 }
3230
3231 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3233 let mut selections = self.local_selections::<Point>(cx);
3234 for selection in &mut selections {
3235 let start = selection.start.to_display_point(&display_map);
3236 let end = selection.end.to_display_point(&display_map);
3237
3238 if start != end {
3239 selection.start = selection.end.clone();
3240 } else {
3241 let cursor = movement::right(&display_map, end)
3242 .unwrap()
3243 .to_point(&display_map);
3244 selection.start = cursor;
3245 selection.end = cursor;
3246 }
3247 selection.reversed = false;
3248 selection.goal = SelectionGoal::None;
3249 }
3250 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3251 }
3252
3253 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3254 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3255 let mut selections = self.local_selections::<Point>(cx);
3256 for selection in &mut selections {
3257 let head = selection.head().to_display_point(&display_map);
3258 let cursor = movement::right(&display_map, head)
3259 .unwrap()
3260 .to_point(&display_map);
3261 selection.set_head(cursor);
3262 selection.goal = SelectionGoal::None;
3263 }
3264 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3265 }
3266
3267 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3268 if self.take_rename(cx).is_some() {
3269 return;
3270 }
3271
3272 if let Some(context_menu) = self.context_menu.as_mut() {
3273 if context_menu.select_prev(cx) {
3274 return;
3275 }
3276 }
3277
3278 if matches!(self.mode, EditorMode::SingleLine) {
3279 cx.propagate_action();
3280 return;
3281 }
3282
3283 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3284 let mut selections = self.local_selections::<Point>(cx);
3285 for selection in &mut selections {
3286 let start = selection.start.to_display_point(&display_map);
3287 let end = selection.end.to_display_point(&display_map);
3288 if start != end {
3289 selection.goal = SelectionGoal::None;
3290 }
3291
3292 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3293 let cursor = start.to_point(&display_map);
3294 selection.start = cursor;
3295 selection.end = cursor;
3296 selection.goal = goal;
3297 selection.reversed = false;
3298 }
3299 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3300 }
3301
3302 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3303 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3304 let mut selections = self.local_selections::<Point>(cx);
3305 for selection in &mut selections {
3306 let head = selection.head().to_display_point(&display_map);
3307 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3308 let cursor = head.to_point(&display_map);
3309 selection.set_head(cursor);
3310 selection.goal = goal;
3311 }
3312 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3313 }
3314
3315 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3316 self.take_rename(cx);
3317
3318 if let Some(context_menu) = self.context_menu.as_mut() {
3319 if context_menu.select_next(cx) {
3320 return;
3321 }
3322 }
3323
3324 if matches!(self.mode, EditorMode::SingleLine) {
3325 cx.propagate_action();
3326 return;
3327 }
3328
3329 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3330 let mut selections = self.local_selections::<Point>(cx);
3331 for selection in &mut selections {
3332 let start = selection.start.to_display_point(&display_map);
3333 let end = selection.end.to_display_point(&display_map);
3334 if start != end {
3335 selection.goal = SelectionGoal::None;
3336 }
3337
3338 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3339 let cursor = start.to_point(&display_map);
3340 selection.start = cursor;
3341 selection.end = cursor;
3342 selection.goal = goal;
3343 selection.reversed = false;
3344 }
3345 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3346 }
3347
3348 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3349 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3350 let mut selections = self.local_selections::<Point>(cx);
3351 for selection in &mut selections {
3352 let head = selection.head().to_display_point(&display_map);
3353 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3354 let cursor = head.to_point(&display_map);
3355 selection.set_head(cursor);
3356 selection.goal = goal;
3357 }
3358 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3359 }
3360
3361 pub fn move_to_previous_word_boundary(
3362 &mut self,
3363 _: &MoveToPreviousWordBoundary,
3364 cx: &mut ViewContext<Self>,
3365 ) {
3366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3367 let mut selections = self.local_selections::<Point>(cx);
3368 for selection in &mut selections {
3369 let head = selection.head().to_display_point(&display_map);
3370 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3371 selection.start = cursor.clone();
3372 selection.end = cursor;
3373 selection.reversed = false;
3374 selection.goal = SelectionGoal::None;
3375 }
3376 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3377 }
3378
3379 pub fn select_to_previous_word_boundary(
3380 &mut self,
3381 _: &SelectToPreviousWordBoundary,
3382 cx: &mut ViewContext<Self>,
3383 ) {
3384 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3385 let mut selections = self.local_selections::<Point>(cx);
3386 for selection in &mut selections {
3387 let head = selection.head().to_display_point(&display_map);
3388 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3389 selection.set_head(cursor);
3390 selection.goal = SelectionGoal::None;
3391 }
3392 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3393 }
3394
3395 pub fn delete_to_previous_word_boundary(
3396 &mut self,
3397 _: &DeleteToPreviousWordBoundary,
3398 cx: &mut ViewContext<Self>,
3399 ) {
3400 self.start_transaction(cx);
3401 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3402 let mut selections = self.local_selections::<Point>(cx);
3403 for selection in &mut selections {
3404 if selection.is_empty() {
3405 let head = selection.head().to_display_point(&display_map);
3406 let cursor =
3407 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3408 selection.set_head(cursor);
3409 selection.goal = SelectionGoal::None;
3410 }
3411 }
3412 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3413 self.insert("", cx);
3414 self.end_transaction(cx);
3415 }
3416
3417 pub fn move_to_next_word_boundary(
3418 &mut self,
3419 _: &MoveToNextWordBoundary,
3420 cx: &mut ViewContext<Self>,
3421 ) {
3422 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3423 let mut selections = self.local_selections::<Point>(cx);
3424 for selection in &mut selections {
3425 let head = selection.head().to_display_point(&display_map);
3426 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3427 selection.start = cursor;
3428 selection.end = cursor;
3429 selection.reversed = false;
3430 selection.goal = SelectionGoal::None;
3431 }
3432 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3433 }
3434
3435 pub fn select_to_next_word_boundary(
3436 &mut self,
3437 _: &SelectToNextWordBoundary,
3438 cx: &mut ViewContext<Self>,
3439 ) {
3440 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3441 let mut selections = self.local_selections::<Point>(cx);
3442 for selection in &mut selections {
3443 let head = selection.head().to_display_point(&display_map);
3444 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3445 selection.set_head(cursor);
3446 selection.goal = SelectionGoal::None;
3447 }
3448 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3449 }
3450
3451 pub fn delete_to_next_word_boundary(
3452 &mut self,
3453 _: &DeleteToNextWordBoundary,
3454 cx: &mut ViewContext<Self>,
3455 ) {
3456 self.start_transaction(cx);
3457 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3458 let mut selections = self.local_selections::<Point>(cx);
3459 for selection in &mut selections {
3460 if selection.is_empty() {
3461 let head = selection.head().to_display_point(&display_map);
3462 let cursor =
3463 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3464 selection.set_head(cursor);
3465 selection.goal = SelectionGoal::None;
3466 }
3467 }
3468 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3469 self.insert("", cx);
3470 self.end_transaction(cx);
3471 }
3472
3473 pub fn move_to_beginning_of_line(
3474 &mut self,
3475 _: &MoveToBeginningOfLine,
3476 cx: &mut ViewContext<Self>,
3477 ) {
3478 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3479 let mut selections = self.local_selections::<Point>(cx);
3480 for selection in &mut selections {
3481 let head = selection.head().to_display_point(&display_map);
3482 let new_head = movement::line_beginning(&display_map, head, true);
3483 let cursor = new_head.to_point(&display_map);
3484 selection.start = cursor;
3485 selection.end = cursor;
3486 selection.reversed = false;
3487 selection.goal = SelectionGoal::None;
3488 }
3489 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3490 }
3491
3492 pub fn select_to_beginning_of_line(
3493 &mut self,
3494 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3495 cx: &mut ViewContext<Self>,
3496 ) {
3497 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3498 let mut selections = self.local_selections::<Point>(cx);
3499 for selection in &mut selections {
3500 let head = selection.head().to_display_point(&display_map);
3501 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3502 selection.set_head(new_head.to_point(&display_map));
3503 selection.goal = SelectionGoal::None;
3504 }
3505 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3506 }
3507
3508 pub fn delete_to_beginning_of_line(
3509 &mut self,
3510 _: &DeleteToBeginningOfLine,
3511 cx: &mut ViewContext<Self>,
3512 ) {
3513 self.start_transaction(cx);
3514 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3515 self.backspace(&Backspace, cx);
3516 self.end_transaction(cx);
3517 }
3518
3519 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3520 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3521 let mut selections = self.local_selections::<Point>(cx);
3522 {
3523 for selection in &mut selections {
3524 let head = selection.head().to_display_point(&display_map);
3525 let new_head = movement::line_end(&display_map, head, true);
3526 let anchor = new_head.to_point(&display_map);
3527 selection.start = anchor.clone();
3528 selection.end = anchor;
3529 selection.reversed = false;
3530 selection.goal = SelectionGoal::None;
3531 }
3532 }
3533 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3534 }
3535
3536 pub fn select_to_end_of_line(
3537 &mut self,
3538 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3539 cx: &mut ViewContext<Self>,
3540 ) {
3541 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3542 let mut selections = self.local_selections::<Point>(cx);
3543 for selection in &mut selections {
3544 let head = selection.head().to_display_point(&display_map);
3545 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3546 selection.set_head(new_head.to_point(&display_map));
3547 selection.goal = SelectionGoal::None;
3548 }
3549 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3550 }
3551
3552 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3553 self.start_transaction(cx);
3554 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3555 self.delete(&Delete, cx);
3556 self.end_transaction(cx);
3557 }
3558
3559 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3560 self.start_transaction(cx);
3561 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3562 self.cut(&Cut, cx);
3563 self.end_transaction(cx);
3564 }
3565
3566 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3567 if matches!(self.mode, EditorMode::SingleLine) {
3568 cx.propagate_action();
3569 return;
3570 }
3571
3572 let selection = Selection {
3573 id: post_inc(&mut self.next_selection_id),
3574 start: 0,
3575 end: 0,
3576 reversed: false,
3577 goal: SelectionGoal::None,
3578 };
3579 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3580 }
3581
3582 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3583 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3584 selection.set_head(Point::zero());
3585 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3586 }
3587
3588 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3589 if matches!(self.mode, EditorMode::SingleLine) {
3590 cx.propagate_action();
3591 return;
3592 }
3593
3594 let cursor = self.buffer.read(cx).read(cx).len();
3595 let selection = Selection {
3596 id: post_inc(&mut self.next_selection_id),
3597 start: cursor,
3598 end: cursor,
3599 reversed: false,
3600 goal: SelectionGoal::None,
3601 };
3602 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3603 }
3604
3605 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3606 self.nav_history = nav_history;
3607 }
3608
3609 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3610 self.nav_history.as_ref()
3611 }
3612
3613 fn push_to_nav_history(
3614 &self,
3615 position: Anchor,
3616 new_position: Option<Point>,
3617 cx: &mut ViewContext<Self>,
3618 ) {
3619 if let Some(nav_history) = &self.nav_history {
3620 let buffer = self.buffer.read(cx).read(cx);
3621 let offset = position.to_offset(&buffer);
3622 let point = position.to_point(&buffer);
3623 drop(buffer);
3624
3625 if let Some(new_position) = new_position {
3626 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3627 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3628 return;
3629 }
3630 }
3631
3632 nav_history.push(Some(NavigationData {
3633 anchor: position,
3634 offset,
3635 }));
3636 }
3637 }
3638
3639 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3640 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3641 selection.set_head(self.buffer.read(cx).read(cx).len());
3642 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3643 }
3644
3645 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3646 let selection = Selection {
3647 id: post_inc(&mut self.next_selection_id),
3648 start: 0,
3649 end: self.buffer.read(cx).read(cx).len(),
3650 reversed: false,
3651 goal: SelectionGoal::None,
3652 };
3653 self.update_selections(vec![selection], None, cx);
3654 }
3655
3656 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3657 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3658 let mut selections = self.local_selections::<Point>(cx);
3659 let max_point = display_map.buffer_snapshot.max_point();
3660 for selection in &mut selections {
3661 let rows = selection.spanned_rows(true, &display_map);
3662 selection.start = Point::new(rows.start, 0);
3663 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3664 selection.reversed = false;
3665 }
3666 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3667 }
3668
3669 pub fn split_selection_into_lines(
3670 &mut self,
3671 _: &SplitSelectionIntoLines,
3672 cx: &mut ViewContext<Self>,
3673 ) {
3674 let mut to_unfold = Vec::new();
3675 let mut new_selections = Vec::new();
3676 {
3677 let selections = self.local_selections::<Point>(cx);
3678 let buffer = self.buffer.read(cx).read(cx);
3679 for selection in selections {
3680 for row in selection.start.row..selection.end.row {
3681 let cursor = Point::new(row, buffer.line_len(row));
3682 new_selections.push(Selection {
3683 id: post_inc(&mut self.next_selection_id),
3684 start: cursor,
3685 end: cursor,
3686 reversed: false,
3687 goal: SelectionGoal::None,
3688 });
3689 }
3690 new_selections.push(Selection {
3691 id: selection.id,
3692 start: selection.end,
3693 end: selection.end,
3694 reversed: false,
3695 goal: SelectionGoal::None,
3696 });
3697 to_unfold.push(selection.start..selection.end);
3698 }
3699 }
3700 self.unfold_ranges(to_unfold, cx);
3701 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3702 }
3703
3704 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3705 self.add_selection(true, cx);
3706 }
3707
3708 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3709 self.add_selection(false, cx);
3710 }
3711
3712 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3713 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3714 let mut selections = self.local_selections::<Point>(cx);
3715 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3716 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3717 let range = oldest_selection.display_range(&display_map).sorted();
3718 let columns = cmp::min(range.start.column(), range.end.column())
3719 ..cmp::max(range.start.column(), range.end.column());
3720
3721 selections.clear();
3722 let mut stack = Vec::new();
3723 for row in range.start.row()..=range.end.row() {
3724 if let Some(selection) = self.build_columnar_selection(
3725 &display_map,
3726 row,
3727 &columns,
3728 oldest_selection.reversed,
3729 ) {
3730 stack.push(selection.id);
3731 selections.push(selection);
3732 }
3733 }
3734
3735 if above {
3736 stack.reverse();
3737 }
3738
3739 AddSelectionsState { above, stack }
3740 });
3741
3742 let last_added_selection = *state.stack.last().unwrap();
3743 let mut new_selections = Vec::new();
3744 if above == state.above {
3745 let end_row = if above {
3746 0
3747 } else {
3748 display_map.max_point().row()
3749 };
3750
3751 'outer: for selection in selections {
3752 if selection.id == last_added_selection {
3753 let range = selection.display_range(&display_map).sorted();
3754 debug_assert_eq!(range.start.row(), range.end.row());
3755 let mut row = range.start.row();
3756 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3757 {
3758 start..end
3759 } else {
3760 cmp::min(range.start.column(), range.end.column())
3761 ..cmp::max(range.start.column(), range.end.column())
3762 };
3763
3764 while row != end_row {
3765 if above {
3766 row -= 1;
3767 } else {
3768 row += 1;
3769 }
3770
3771 if let Some(new_selection) = self.build_columnar_selection(
3772 &display_map,
3773 row,
3774 &columns,
3775 selection.reversed,
3776 ) {
3777 state.stack.push(new_selection.id);
3778 if above {
3779 new_selections.push(new_selection);
3780 new_selections.push(selection);
3781 } else {
3782 new_selections.push(selection);
3783 new_selections.push(new_selection);
3784 }
3785
3786 continue 'outer;
3787 }
3788 }
3789 }
3790
3791 new_selections.push(selection);
3792 }
3793 } else {
3794 new_selections = selections;
3795 new_selections.retain(|s| s.id != last_added_selection);
3796 state.stack.pop();
3797 }
3798
3799 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3800 if state.stack.len() > 1 {
3801 self.add_selections_state = Some(state);
3802 }
3803 }
3804
3805 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3806 let replace_newest = action.0;
3807 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3808 let buffer = &display_map.buffer_snapshot;
3809 let mut selections = self.local_selections::<usize>(cx);
3810 if let Some(mut select_next_state) = self.select_next_state.take() {
3811 let query = &select_next_state.query;
3812 if !select_next_state.done {
3813 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3814 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3815 let mut next_selected_range = None;
3816
3817 let bytes_after_last_selection =
3818 buffer.bytes_in_range(last_selection.end..buffer.len());
3819 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3820 let query_matches = query
3821 .stream_find_iter(bytes_after_last_selection)
3822 .map(|result| (last_selection.end, result))
3823 .chain(
3824 query
3825 .stream_find_iter(bytes_before_first_selection)
3826 .map(|result| (0, result)),
3827 );
3828 for (start_offset, query_match) in query_matches {
3829 let query_match = query_match.unwrap(); // can only fail due to I/O
3830 let offset_range =
3831 start_offset + query_match.start()..start_offset + query_match.end();
3832 let display_range = offset_range.start.to_display_point(&display_map)
3833 ..offset_range.end.to_display_point(&display_map);
3834
3835 if !select_next_state.wordwise
3836 || (!movement::is_inside_word(&display_map, display_range.start)
3837 && !movement::is_inside_word(&display_map, display_range.end))
3838 {
3839 next_selected_range = Some(offset_range);
3840 break;
3841 }
3842 }
3843
3844 if let Some(next_selected_range) = next_selected_range {
3845 if replace_newest {
3846 if let Some(newest_id) =
3847 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3848 {
3849 selections.retain(|s| s.id != newest_id);
3850 }
3851 }
3852 selections.push(Selection {
3853 id: post_inc(&mut self.next_selection_id),
3854 start: next_selected_range.start,
3855 end: next_selected_range.end,
3856 reversed: false,
3857 goal: SelectionGoal::None,
3858 });
3859 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3860 } else {
3861 select_next_state.done = true;
3862 }
3863 }
3864
3865 self.select_next_state = Some(select_next_state);
3866 } else if selections.len() == 1 {
3867 let selection = selections.last_mut().unwrap();
3868 if selection.start == selection.end {
3869 let word_range = movement::surrounding_word(
3870 &display_map,
3871 selection.start.to_display_point(&display_map),
3872 );
3873 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3874 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3875 selection.goal = SelectionGoal::None;
3876 selection.reversed = false;
3877
3878 let query = buffer
3879 .text_for_range(selection.start..selection.end)
3880 .collect::<String>();
3881 let select_state = SelectNextState {
3882 query: AhoCorasick::new_auto_configured(&[query]),
3883 wordwise: true,
3884 done: false,
3885 };
3886 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3887 self.select_next_state = Some(select_state);
3888 } else {
3889 let query = buffer
3890 .text_for_range(selection.start..selection.end)
3891 .collect::<String>();
3892 self.select_next_state = Some(SelectNextState {
3893 query: AhoCorasick::new_auto_configured(&[query]),
3894 wordwise: false,
3895 done: false,
3896 });
3897 self.select_next(action, cx);
3898 }
3899 }
3900 }
3901
3902 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3903 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3904 // as that portion won't be used for detecting if a line is a comment.
3905 let full_comment_prefix =
3906 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3907 prefix.to_string()
3908 } else {
3909 return;
3910 };
3911 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3912 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3913
3914 self.start_transaction(cx);
3915 let mut selections = self.local_selections::<Point>(cx);
3916 let mut all_selection_lines_are_comments = true;
3917 let mut edit_ranges = Vec::new();
3918 let mut last_toggled_row = None;
3919 self.buffer.update(cx, |buffer, cx| {
3920 for selection in &mut selections {
3921 edit_ranges.clear();
3922 let snapshot = buffer.snapshot(cx);
3923
3924 let end_row =
3925 if selection.end.row > selection.start.row && selection.end.column == 0 {
3926 selection.end.row
3927 } else {
3928 selection.end.row + 1
3929 };
3930
3931 for row in selection.start.row..end_row {
3932 // If multiple selections contain a given row, avoid processing that
3933 // row more than once.
3934 if last_toggled_row == Some(row) {
3935 continue;
3936 } else {
3937 last_toggled_row = Some(row);
3938 }
3939
3940 if snapshot.is_line_blank(row) {
3941 continue;
3942 }
3943
3944 let start = Point::new(row, snapshot.indent_column_for_line(row));
3945 let mut line_bytes = snapshot
3946 .bytes_in_range(start..snapshot.max_point())
3947 .flatten()
3948 .copied();
3949
3950 // If this line currently begins with the line comment prefix, then record
3951 // the range containing the prefix.
3952 if all_selection_lines_are_comments
3953 && line_bytes
3954 .by_ref()
3955 .take(comment_prefix.len())
3956 .eq(comment_prefix.bytes())
3957 {
3958 // Include any whitespace that matches the comment prefix.
3959 let matching_whitespace_len = line_bytes
3960 .zip(comment_prefix_whitespace.bytes())
3961 .take_while(|(a, b)| a == b)
3962 .count() as u32;
3963 let end = Point::new(
3964 row,
3965 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3966 );
3967 edit_ranges.push(start..end);
3968 }
3969 // If this line does not begin with the line comment prefix, then record
3970 // the position where the prefix should be inserted.
3971 else {
3972 all_selection_lines_are_comments = false;
3973 edit_ranges.push(start..start);
3974 }
3975 }
3976
3977 if !edit_ranges.is_empty() {
3978 if all_selection_lines_are_comments {
3979 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3980 } else {
3981 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3982 let edit_ranges = edit_ranges.iter().map(|range| {
3983 let position = Point::new(range.start.row, min_column);
3984 position..position
3985 });
3986 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3987 }
3988 }
3989 }
3990 });
3991
3992 self.update_selections(
3993 self.local_selections::<usize>(cx),
3994 Some(Autoscroll::Fit),
3995 cx,
3996 );
3997 self.end_transaction(cx);
3998 }
3999
4000 pub fn select_larger_syntax_node(
4001 &mut self,
4002 _: &SelectLargerSyntaxNode,
4003 cx: &mut ViewContext<Self>,
4004 ) {
4005 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4006 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4007 let buffer = self.buffer.read(cx).snapshot(cx);
4008
4009 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4010 let mut selected_larger_node = false;
4011 let new_selections = old_selections
4012 .iter()
4013 .map(|selection| {
4014 let old_range = selection.start..selection.end;
4015 let mut new_range = old_range.clone();
4016 while let Some(containing_range) =
4017 buffer.range_for_syntax_ancestor(new_range.clone())
4018 {
4019 new_range = containing_range;
4020 if !display_map.intersects_fold(new_range.start)
4021 && !display_map.intersects_fold(new_range.end)
4022 {
4023 break;
4024 }
4025 }
4026
4027 selected_larger_node |= new_range != old_range;
4028 Selection {
4029 id: selection.id,
4030 start: new_range.start,
4031 end: new_range.end,
4032 goal: SelectionGoal::None,
4033 reversed: selection.reversed,
4034 }
4035 })
4036 .collect::<Vec<_>>();
4037
4038 if selected_larger_node {
4039 stack.push(old_selections);
4040 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4041 }
4042 self.select_larger_syntax_node_stack = stack;
4043 }
4044
4045 pub fn select_smaller_syntax_node(
4046 &mut self,
4047 _: &SelectSmallerSyntaxNode,
4048 cx: &mut ViewContext<Self>,
4049 ) {
4050 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4051 if let Some(selections) = stack.pop() {
4052 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4053 }
4054 self.select_larger_syntax_node_stack = stack;
4055 }
4056
4057 pub fn move_to_enclosing_bracket(
4058 &mut self,
4059 _: &MoveToEnclosingBracket,
4060 cx: &mut ViewContext<Self>,
4061 ) {
4062 let mut selections = self.local_selections::<usize>(cx);
4063 let buffer = self.buffer.read(cx).snapshot(cx);
4064 for selection in &mut selections {
4065 if let Some((open_range, close_range)) =
4066 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4067 {
4068 let close_range = close_range.to_inclusive();
4069 let destination = if close_range.contains(&selection.start)
4070 && close_range.contains(&selection.end)
4071 {
4072 open_range.end
4073 } else {
4074 *close_range.start()
4075 };
4076 selection.start = destination;
4077 selection.end = destination;
4078 }
4079 }
4080
4081 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4082 }
4083
4084 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
4085 let buffer = self.buffer.read(cx).snapshot(cx);
4086 let selection = self.newest_selection::<usize>(&buffer);
4087 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4088 active_diagnostics
4089 .primary_range
4090 .to_offset(&buffer)
4091 .to_inclusive()
4092 });
4093 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4094 if active_primary_range.contains(&selection.head()) {
4095 *active_primary_range.end()
4096 } else {
4097 selection.head()
4098 }
4099 } else {
4100 selection.head()
4101 };
4102
4103 loop {
4104 let next_group = buffer
4105 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
4106 .find_map(|entry| {
4107 if entry.diagnostic.is_primary
4108 && !entry.range.is_empty()
4109 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4110 {
4111 Some((entry.range, entry.diagnostic.group_id))
4112 } else {
4113 None
4114 }
4115 });
4116
4117 if let Some((primary_range, group_id)) = next_group {
4118 self.activate_diagnostics(group_id, cx);
4119 self.update_selections(
4120 vec![Selection {
4121 id: selection.id,
4122 start: primary_range.start,
4123 end: primary_range.start,
4124 reversed: false,
4125 goal: SelectionGoal::None,
4126 }],
4127 Some(Autoscroll::Center),
4128 cx,
4129 );
4130 break;
4131 } else if search_start == 0 {
4132 break;
4133 } else {
4134 // Cycle around to the start of the buffer, potentially moving back to the start of
4135 // the currently active diagnostic.
4136 search_start = 0;
4137 active_primary_range.take();
4138 }
4139 }
4140 }
4141
4142 pub fn go_to_definition(
4143 workspace: &mut Workspace,
4144 _: &GoToDefinition,
4145 cx: &mut ViewContext<Workspace>,
4146 ) {
4147 let active_item = workspace.active_item(cx);
4148 let editor_handle = if let Some(editor) = active_item
4149 .as_ref()
4150 .and_then(|item| item.act_as::<Self>(cx))
4151 {
4152 editor
4153 } else {
4154 return;
4155 };
4156
4157 let editor = editor_handle.read(cx);
4158 let buffer = editor.buffer.read(cx);
4159 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
4160 let (buffer, head) =
4161 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4162 text_anchor
4163 } else {
4164 return;
4165 };
4166
4167 let definitions = workspace
4168 .project()
4169 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4170 cx.spawn(|workspace, mut cx| async move {
4171 let definitions = definitions.await?;
4172 workspace.update(&mut cx, |workspace, cx| {
4173 for definition in definitions {
4174 let range = definition.range.to_offset(definition.buffer.read(cx));
4175 let target_editor_handle = workspace
4176 .open_item(BufferItemHandle(definition.buffer), cx)
4177 .downcast::<Self>()
4178 .unwrap();
4179
4180 target_editor_handle.update(cx, |target_editor, cx| {
4181 // When selecting a definition in a different buffer, disable the nav history
4182 // to avoid creating a history entry at the previous cursor location.
4183 let disabled_history = if editor_handle == target_editor_handle {
4184 None
4185 } else {
4186 target_editor.nav_history.take()
4187 };
4188 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4189 if disabled_history.is_some() {
4190 target_editor.nav_history = disabled_history;
4191 }
4192 });
4193 }
4194 });
4195
4196 Ok::<(), anyhow::Error>(())
4197 })
4198 .detach_and_log_err(cx);
4199 }
4200
4201 pub fn find_all_references(
4202 workspace: &mut Workspace,
4203 _: &FindAllReferences,
4204 cx: &mut ViewContext<Workspace>,
4205 ) -> Option<Task<Result<()>>> {
4206 let active_item = workspace.active_item(cx)?;
4207 let editor_handle = active_item.act_as::<Self>(cx)?;
4208
4209 let editor = editor_handle.read(cx);
4210 let buffer = editor.buffer.read(cx);
4211 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
4212 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4213 let replica_id = editor.replica_id(cx);
4214
4215 let references = workspace
4216 .project()
4217 .update(cx, |project, cx| project.references(&buffer, head, cx));
4218 Some(cx.spawn(|workspace, mut cx| async move {
4219 let mut locations = references.await?;
4220 if locations.is_empty() {
4221 return Ok(());
4222 }
4223
4224 locations.sort_by_key(|location| location.buffer.id());
4225 let mut locations = locations.into_iter().peekable();
4226 let mut ranges_to_highlight = Vec::new();
4227
4228 let excerpt_buffer = cx.add_model(|cx| {
4229 let mut symbol_name = None;
4230 let mut multibuffer = MultiBuffer::new(replica_id);
4231 while let Some(location) = locations.next() {
4232 let buffer = location.buffer.read(cx);
4233 let mut ranges_for_buffer = Vec::new();
4234 let range = location.range.to_offset(buffer);
4235 ranges_for_buffer.push(range.clone());
4236 if symbol_name.is_none() {
4237 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4238 }
4239
4240 while let Some(next_location) = locations.peek() {
4241 if next_location.buffer == location.buffer {
4242 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4243 locations.next();
4244 } else {
4245 break;
4246 }
4247 }
4248
4249 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4250 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4251 location.buffer.clone(),
4252 ranges_for_buffer,
4253 1,
4254 cx,
4255 ));
4256 }
4257 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4258 });
4259
4260 workspace.update(&mut cx, |workspace, cx| {
4261 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4262 if let Some(editor) = editor.act_as::<Self>(cx) {
4263 editor.update(cx, |editor, cx| {
4264 let color = editor.style(cx).highlighted_line_background;
4265 editor.highlight_ranges::<Self>(ranges_to_highlight, color, cx);
4266 });
4267 }
4268 });
4269
4270 Ok(())
4271 }))
4272 }
4273
4274 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4275 use language::ToOffset as _;
4276
4277 let project = self.project.clone()?;
4278 let selection = self.newest_anchor_selection().clone();
4279 let (cursor_buffer, cursor_buffer_position) = self
4280 .buffer
4281 .read(cx)
4282 .text_anchor_for_position(selection.head(), cx)?;
4283 let (tail_buffer, tail_buffer_position) = self
4284 .buffer
4285 .read(cx)
4286 .text_anchor_for_position(selection.tail(), cx)?;
4287 if tail_buffer != cursor_buffer {
4288 return None;
4289 }
4290
4291 let snapshot = cursor_buffer.read(cx).snapshot();
4292 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4293 let tail_buffer_offset = tail_buffer_position.to_offset(&snapshot);
4294 let prepare_rename = project.update(cx, |project, cx| {
4295 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4296 });
4297
4298 Some(cx.spawn(|this, mut cx| async move {
4299 if let Some(rename_range) = prepare_rename.await? {
4300 let rename_buffer_range = rename_range.to_offset(&snapshot);
4301 let cursor_offset_in_rename_range =
4302 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4303 let tail_offset_in_rename_range =
4304 tail_buffer_offset.saturating_sub(rename_buffer_range.start);
4305
4306 this.update(&mut cx, |this, cx| {
4307 this.take_rename(cx);
4308 let style = this.style(cx);
4309 let buffer = this.buffer.read(cx).read(cx);
4310 let cursor_offset = selection.head().to_offset(&buffer);
4311 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4312 let rename_end = rename_start + rename_buffer_range.len();
4313 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4314 let old_name = buffer
4315 .text_for_range(rename_start..rename_end)
4316 .collect::<String>();
4317 drop(buffer);
4318
4319 // Position the selection in the rename editor so that it matches the current selection.
4320 let rename_editor = cx.add_view(|cx| {
4321 let mut editor = Editor::single_line(this.settings.clone(), None, cx);
4322 editor
4323 .buffer
4324 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4325 editor.select_ranges(
4326 [tail_offset_in_rename_range..cursor_offset_in_rename_range],
4327 None,
4328 cx,
4329 );
4330 editor.highlight_ranges::<Rename>(
4331 vec![Anchor::min()..Anchor::max()],
4332 style.diff_background_inserted,
4333 cx,
4334 );
4335 editor
4336 });
4337 this.highlight_ranges::<Rename>(
4338 vec![range.clone()],
4339 style.diff_background_deleted,
4340 cx,
4341 );
4342 this.update_selections(
4343 vec![Selection {
4344 id: selection.id,
4345 start: rename_end,
4346 end: rename_end,
4347 reversed: false,
4348 goal: SelectionGoal::None,
4349 }],
4350 None,
4351 cx,
4352 );
4353 cx.focus(&rename_editor);
4354 let block_id = this.insert_blocks(
4355 [BlockProperties {
4356 position: range.start.clone(),
4357 height: 1,
4358 render: Arc::new({
4359 let editor = rename_editor.clone();
4360 move |cx: &BlockContext| {
4361 ChildView::new(editor.clone())
4362 .contained()
4363 .with_padding_left(cx.anchor_x)
4364 .boxed()
4365 }
4366 }),
4367 disposition: BlockDisposition::Below,
4368 }],
4369 cx,
4370 )[0];
4371 this.pending_rename = Some(RenameState {
4372 range,
4373 old_name,
4374 editor: rename_editor,
4375 block_id,
4376 });
4377 });
4378 }
4379
4380 Ok(())
4381 }))
4382 }
4383
4384 pub fn confirm_rename(
4385 workspace: &mut Workspace,
4386 _: &ConfirmRename,
4387 cx: &mut ViewContext<Workspace>,
4388 ) -> Option<Task<Result<()>>> {
4389 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4390
4391 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4392 let rename = editor.take_rename(cx)?;
4393 let buffer = editor.buffer.read(cx);
4394 let (start_buffer, start) =
4395 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4396 let (end_buffer, end) =
4397 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4398 if start_buffer == end_buffer {
4399 let new_name = rename.editor.read(cx).text(cx);
4400 Some((start_buffer, start..end, rename.old_name, new_name))
4401 } else {
4402 None
4403 }
4404 })?;
4405
4406 let rename = workspace.project().clone().update(cx, |project, cx| {
4407 project.perform_rename(
4408 buffer.clone(),
4409 range.start.clone(),
4410 new_name.clone(),
4411 true,
4412 cx,
4413 )
4414 });
4415
4416 Some(cx.spawn(|workspace, cx| async move {
4417 let project_transaction = rename.await?;
4418 Self::open_project_transaction(
4419 editor,
4420 workspace,
4421 project_transaction,
4422 format!("Rename: {} → {}", old_name, new_name),
4423 cx,
4424 )
4425 .await
4426 }))
4427 }
4428
4429 fn take_rename(&mut self, cx: &mut ViewContext<Self>) -> Option<RenameState> {
4430 let rename = self.pending_rename.take()?;
4431 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4432 self.clear_highlighted_ranges::<Rename>(cx);
4433
4434 let editor = rename.editor.read(cx);
4435 let buffer = editor.buffer.read(cx).snapshot(cx);
4436 let selection = editor.newest_selection::<usize>(&buffer);
4437
4438 // Update the selection to match the position of the selection inside
4439 // the rename editor.
4440 let snapshot = self.buffer.read(cx).snapshot(cx);
4441 let rename_range = rename.range.to_offset(&snapshot);
4442 let start = snapshot
4443 .clip_offset(rename_range.start + selection.start, Bias::Left)
4444 .min(rename_range.end);
4445 let end = snapshot
4446 .clip_offset(rename_range.start + selection.end, Bias::Left)
4447 .min(rename_range.end);
4448 self.update_selections(
4449 vec![Selection {
4450 id: self.newest_anchor_selection().id,
4451 start,
4452 end,
4453 reversed: selection.reversed,
4454 goal: SelectionGoal::None,
4455 }],
4456 None,
4457 cx,
4458 );
4459
4460 Some(rename)
4461 }
4462
4463 fn invalidate_rename_range(
4464 &mut self,
4465 buffer: &MultiBufferSnapshot,
4466 cx: &mut ViewContext<Self>,
4467 ) {
4468 if let Some(rename) = self.pending_rename.as_ref() {
4469 if self.selections.len() == 1 {
4470 let head = self.selections[0].head().to_offset(buffer);
4471 let range = rename.range.to_offset(buffer).to_inclusive();
4472 if range.contains(&head) {
4473 return;
4474 }
4475 }
4476 let rename = self.pending_rename.take().unwrap();
4477 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4478 self.clear_highlighted_ranges::<Rename>(cx);
4479 }
4480 }
4481
4482 #[cfg(any(test, feature = "test-support"))]
4483 pub fn pending_rename(&self) -> Option<&RenameState> {
4484 self.pending_rename.as_ref()
4485 }
4486
4487 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4488 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4489 let buffer = self.buffer.read(cx).snapshot(cx);
4490 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4491 let is_valid = buffer
4492 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
4493 .any(|entry| {
4494 entry.diagnostic.is_primary
4495 && !entry.range.is_empty()
4496 && entry.range.start == primary_range_start
4497 && entry.diagnostic.message == active_diagnostics.primary_message
4498 });
4499
4500 if is_valid != active_diagnostics.is_valid {
4501 active_diagnostics.is_valid = is_valid;
4502 let mut new_styles = HashMap::default();
4503 for (block_id, diagnostic) in &active_diagnostics.blocks {
4504 new_styles.insert(
4505 *block_id,
4506 diagnostic_block_renderer(
4507 diagnostic.clone(),
4508 is_valid,
4509 self.settings.clone(),
4510 ),
4511 );
4512 }
4513 self.display_map
4514 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4515 }
4516 }
4517 }
4518
4519 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4520 self.dismiss_diagnostics(cx);
4521 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4522 let buffer = self.buffer.read(cx).snapshot(cx);
4523
4524 let mut primary_range = None;
4525 let mut primary_message = None;
4526 let mut group_end = Point::zero();
4527 let diagnostic_group = buffer
4528 .diagnostic_group::<Point>(group_id)
4529 .map(|entry| {
4530 if entry.range.end > group_end {
4531 group_end = entry.range.end;
4532 }
4533 if entry.diagnostic.is_primary {
4534 primary_range = Some(entry.range.clone());
4535 primary_message = Some(entry.diagnostic.message.clone());
4536 }
4537 entry
4538 })
4539 .collect::<Vec<_>>();
4540 let primary_range = primary_range.unwrap();
4541 let primary_message = primary_message.unwrap();
4542 let primary_range =
4543 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4544
4545 let blocks = display_map
4546 .insert_blocks(
4547 diagnostic_group.iter().map(|entry| {
4548 let diagnostic = entry.diagnostic.clone();
4549 let message_height = diagnostic.message.lines().count() as u8;
4550 BlockProperties {
4551 position: buffer.anchor_after(entry.range.start),
4552 height: message_height,
4553 render: diagnostic_block_renderer(
4554 diagnostic,
4555 true,
4556 self.settings.clone(),
4557 ),
4558 disposition: BlockDisposition::Below,
4559 }
4560 }),
4561 cx,
4562 )
4563 .into_iter()
4564 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4565 .collect();
4566
4567 Some(ActiveDiagnosticGroup {
4568 primary_range,
4569 primary_message,
4570 blocks,
4571 is_valid: true,
4572 })
4573 });
4574 }
4575
4576 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4577 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4578 self.display_map.update(cx, |display_map, cx| {
4579 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4580 });
4581 cx.notify();
4582 }
4583 }
4584
4585 fn build_columnar_selection(
4586 &mut self,
4587 display_map: &DisplaySnapshot,
4588 row: u32,
4589 columns: &Range<u32>,
4590 reversed: bool,
4591 ) -> Option<Selection<Point>> {
4592 let is_empty = columns.start == columns.end;
4593 let line_len = display_map.line_len(row);
4594 if columns.start < line_len || (is_empty && columns.start == line_len) {
4595 let start = DisplayPoint::new(row, columns.start);
4596 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4597 Some(Selection {
4598 id: post_inc(&mut self.next_selection_id),
4599 start: start.to_point(display_map),
4600 end: end.to_point(display_map),
4601 reversed,
4602 goal: SelectionGoal::ColumnRange {
4603 start: columns.start,
4604 end: columns.end,
4605 },
4606 })
4607 } else {
4608 None
4609 }
4610 }
4611
4612 pub fn local_selections_in_range(
4613 &self,
4614 range: Range<Anchor>,
4615 display_map: &DisplaySnapshot,
4616 ) -> Vec<Selection<Point>> {
4617 let buffer = &display_map.buffer_snapshot;
4618
4619 let start_ix = match self
4620 .selections
4621 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4622 {
4623 Ok(ix) | Err(ix) => ix,
4624 };
4625 let end_ix = match self
4626 .selections
4627 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4628 {
4629 Ok(ix) => ix + 1,
4630 Err(ix) => ix,
4631 };
4632
4633 fn point_selection(
4634 selection: &Selection<Anchor>,
4635 buffer: &MultiBufferSnapshot,
4636 ) -> Selection<Point> {
4637 let start = selection.start.to_point(&buffer);
4638 let end = selection.end.to_point(&buffer);
4639 Selection {
4640 id: selection.id,
4641 start,
4642 end,
4643 reversed: selection.reversed,
4644 goal: selection.goal,
4645 }
4646 }
4647
4648 self.selections[start_ix..end_ix]
4649 .iter()
4650 .chain(
4651 self.pending_selection
4652 .as_ref()
4653 .map(|pending| &pending.selection),
4654 )
4655 .map(|s| point_selection(s, &buffer))
4656 .collect()
4657 }
4658
4659 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4660 where
4661 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4662 {
4663 let buffer = self.buffer.read(cx).snapshot(cx);
4664 let mut selections = self
4665 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4666 .peekable();
4667
4668 let mut pending_selection = self.pending_selection::<D>(&buffer);
4669
4670 iter::from_fn(move || {
4671 if let Some(pending) = pending_selection.as_mut() {
4672 while let Some(next_selection) = selections.peek() {
4673 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4674 let next_selection = selections.next().unwrap();
4675 if next_selection.start < pending.start {
4676 pending.start = next_selection.start;
4677 }
4678 if next_selection.end > pending.end {
4679 pending.end = next_selection.end;
4680 }
4681 } else if next_selection.end < pending.start {
4682 return selections.next();
4683 } else {
4684 break;
4685 }
4686 }
4687
4688 pending_selection.take()
4689 } else {
4690 selections.next()
4691 }
4692 })
4693 .collect()
4694 }
4695
4696 fn resolve_selections<'a, D, I>(
4697 &self,
4698 selections: I,
4699 snapshot: &MultiBufferSnapshot,
4700 ) -> impl 'a + Iterator<Item = Selection<D>>
4701 where
4702 D: TextDimension + Ord + Sub<D, Output = D>,
4703 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4704 {
4705 let (to_summarize, selections) = selections.into_iter().tee();
4706 let mut summaries = snapshot
4707 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4708 .into_iter();
4709 selections.map(move |s| Selection {
4710 id: s.id,
4711 start: summaries.next().unwrap(),
4712 end: summaries.next().unwrap(),
4713 reversed: s.reversed,
4714 goal: s.goal,
4715 })
4716 }
4717
4718 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4719 &self,
4720 snapshot: &MultiBufferSnapshot,
4721 ) -> Option<Selection<D>> {
4722 self.pending_selection
4723 .as_ref()
4724 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4725 }
4726
4727 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4728 &self,
4729 selection: &Selection<Anchor>,
4730 buffer: &MultiBufferSnapshot,
4731 ) -> Selection<D> {
4732 Selection {
4733 id: selection.id,
4734 start: selection.start.summary::<D>(&buffer),
4735 end: selection.end.summary::<D>(&buffer),
4736 reversed: selection.reversed,
4737 goal: selection.goal,
4738 }
4739 }
4740
4741 fn selection_count<'a>(&self) -> usize {
4742 let mut count = self.selections.len();
4743 if self.pending_selection.is_some() {
4744 count += 1;
4745 }
4746 count
4747 }
4748
4749 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4750 &self,
4751 snapshot: &MultiBufferSnapshot,
4752 ) -> Selection<D> {
4753 self.selections
4754 .iter()
4755 .min_by_key(|s| s.id)
4756 .map(|selection| self.resolve_selection(selection, snapshot))
4757 .or_else(|| self.pending_selection(snapshot))
4758 .unwrap()
4759 }
4760
4761 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4762 &self,
4763 snapshot: &MultiBufferSnapshot,
4764 ) -> Selection<D> {
4765 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4766 }
4767
4768 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4769 self.pending_selection
4770 .as_ref()
4771 .map(|s| &s.selection)
4772 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4773 .unwrap()
4774 }
4775
4776 pub fn update_selections<T>(
4777 &mut self,
4778 mut selections: Vec<Selection<T>>,
4779 autoscroll: Option<Autoscroll>,
4780 cx: &mut ViewContext<Self>,
4781 ) where
4782 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4783 {
4784 let buffer = self.buffer.read(cx).snapshot(cx);
4785 selections.sort_unstable_by_key(|s| s.start);
4786
4787 // Merge overlapping selections.
4788 let mut i = 1;
4789 while i < selections.len() {
4790 if selections[i - 1].end >= selections[i].start {
4791 let removed = selections.remove(i);
4792 if removed.start < selections[i - 1].start {
4793 selections[i - 1].start = removed.start;
4794 }
4795 if removed.end > selections[i - 1].end {
4796 selections[i - 1].end = removed.end;
4797 }
4798 } else {
4799 i += 1;
4800 }
4801 }
4802
4803 if let Some(autoscroll) = autoscroll {
4804 self.request_autoscroll(autoscroll, cx);
4805 }
4806
4807 self.set_selections(
4808 Arc::from_iter(selections.into_iter().map(|selection| {
4809 let end_bias = if selection.end > selection.start {
4810 Bias::Left
4811 } else {
4812 Bias::Right
4813 };
4814 Selection {
4815 id: selection.id,
4816 start: buffer.anchor_after(selection.start),
4817 end: buffer.anchor_at(selection.end, end_bias),
4818 reversed: selection.reversed,
4819 goal: selection.goal,
4820 }
4821 })),
4822 None,
4823 cx,
4824 );
4825 }
4826
4827 /// Compute new ranges for any selections that were located in excerpts that have
4828 /// since been removed.
4829 ///
4830 /// Returns a `HashMap` indicating which selections whose former head position
4831 /// was no longer present. The keys of the map are selection ids. The values are
4832 /// the id of the new excerpt where the head of the selection has been moved.
4833 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4834 let snapshot = self.buffer.read(cx).read(cx);
4835 let anchors_with_status = snapshot.refresh_anchors(
4836 self.selections
4837 .iter()
4838 .flat_map(|selection| [&selection.start, &selection.end]),
4839 );
4840 let offsets =
4841 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4842 let offsets = offsets.chunks(2);
4843 let statuses = anchors_with_status
4844 .chunks(2)
4845 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4846
4847 let mut selections_with_lost_position = HashMap::default();
4848 let new_selections = offsets
4849 .zip(statuses)
4850 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4851 let selection = &self.selections[selection_ix];
4852 let kept_head = if selection.reversed {
4853 kept_start
4854 } else {
4855 kept_end
4856 };
4857 if !kept_head {
4858 selections_with_lost_position
4859 .insert(selection.id, selection.head().excerpt_id.clone());
4860 }
4861
4862 Selection {
4863 id: selection.id,
4864 start: offsets[0],
4865 end: offsets[1],
4866 reversed: selection.reversed,
4867 goal: selection.goal,
4868 }
4869 })
4870 .collect();
4871 drop(snapshot);
4872 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4873 selections_with_lost_position
4874 }
4875
4876 fn set_selections(
4877 &mut self,
4878 selections: Arc<[Selection<Anchor>]>,
4879 pending_selection: Option<PendingSelection>,
4880 cx: &mut ViewContext<Self>,
4881 ) {
4882 let old_cursor_position = self.newest_anchor_selection().head();
4883
4884 self.selections = selections;
4885 self.pending_selection = pending_selection;
4886 if self.focused {
4887 self.buffer.update(cx, |buffer, cx| {
4888 buffer.set_active_selections(&self.selections, cx)
4889 });
4890 }
4891
4892 let display_map = self
4893 .display_map
4894 .update(cx, |display_map, cx| display_map.snapshot(cx));
4895 let buffer = &display_map.buffer_snapshot;
4896 self.add_selections_state = None;
4897 self.select_next_state = None;
4898 self.select_larger_syntax_node_stack.clear();
4899 self.autoclose_stack.invalidate(&self.selections, &buffer);
4900 self.snippet_stack.invalidate(&self.selections, &buffer);
4901 self.invalidate_rename_range(&buffer, cx);
4902
4903 let new_cursor_position = self.newest_anchor_selection().head();
4904
4905 self.push_to_nav_history(
4906 old_cursor_position.clone(),
4907 Some(new_cursor_position.to_point(&buffer)),
4908 cx,
4909 );
4910
4911 let completion_menu = match self.context_menu.as_mut() {
4912 Some(ContextMenu::Completions(menu)) => Some(menu),
4913 _ => {
4914 self.context_menu.take();
4915 None
4916 }
4917 };
4918
4919 if let Some(completion_menu) = completion_menu {
4920 let cursor_position = new_cursor_position.to_offset(&buffer);
4921 let (word_range, kind) =
4922 buffer.surrounding_word(completion_menu.initial_position.clone());
4923 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4924 {
4925 let query = Self::completion_query(&buffer, cursor_position);
4926 cx.background()
4927 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4928 self.show_completions(&ShowCompletions, cx);
4929 } else {
4930 self.hide_context_menu(cx);
4931 }
4932 }
4933
4934 if old_cursor_position.to_display_point(&display_map).row()
4935 != new_cursor_position.to_display_point(&display_map).row()
4936 {
4937 self.available_code_actions.take();
4938 }
4939 self.refresh_code_actions(cx);
4940 self.refresh_document_highlights(cx);
4941
4942 self.pause_cursor_blinking(cx);
4943 cx.emit(Event::SelectionsChanged);
4944 }
4945
4946 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4947 self.autoscroll_request = Some(autoscroll);
4948 cx.notify();
4949 }
4950
4951 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4952 self.start_transaction_at(Instant::now(), cx);
4953 }
4954
4955 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4956 self.end_selection(cx);
4957 if let Some(tx_id) = self
4958 .buffer
4959 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4960 {
4961 self.selection_history
4962 .insert(tx_id, (self.selections.clone(), None));
4963 }
4964 }
4965
4966 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4967 self.end_transaction_at(Instant::now(), cx);
4968 }
4969
4970 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4971 if let Some(tx_id) = self
4972 .buffer
4973 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4974 {
4975 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4976 *end_selections = Some(self.selections.clone());
4977 } else {
4978 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4979 }
4980 }
4981 }
4982
4983 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4984 log::info!("Editor::page_up");
4985 }
4986
4987 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4988 log::info!("Editor::page_down");
4989 }
4990
4991 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4992 let mut fold_ranges = Vec::new();
4993
4994 let selections = self.local_selections::<Point>(cx);
4995 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4996 for selection in selections {
4997 let range = selection.display_range(&display_map).sorted();
4998 let buffer_start_row = range.start.to_point(&display_map).row;
4999
5000 for row in (0..=range.end.row()).rev() {
5001 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5002 let fold_range = self.foldable_range_for_line(&display_map, row);
5003 if fold_range.end.row >= buffer_start_row {
5004 fold_ranges.push(fold_range);
5005 if row <= range.start.row() {
5006 break;
5007 }
5008 }
5009 }
5010 }
5011 }
5012
5013 self.fold_ranges(fold_ranges, cx);
5014 }
5015
5016 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5017 let selections = self.local_selections::<Point>(cx);
5018 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5019 let buffer = &display_map.buffer_snapshot;
5020 let ranges = selections
5021 .iter()
5022 .map(|s| {
5023 let range = s.display_range(&display_map).sorted();
5024 let mut start = range.start.to_point(&display_map);
5025 let mut end = range.end.to_point(&display_map);
5026 start.column = 0;
5027 end.column = buffer.line_len(end.row);
5028 start..end
5029 })
5030 .collect::<Vec<_>>();
5031 self.unfold_ranges(ranges, cx);
5032 }
5033
5034 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5035 let max_point = display_map.max_point();
5036 if display_row >= max_point.row() {
5037 false
5038 } else {
5039 let (start_indent, is_blank) = display_map.line_indent(display_row);
5040 if is_blank {
5041 false
5042 } else {
5043 for display_row in display_row + 1..=max_point.row() {
5044 let (indent, is_blank) = display_map.line_indent(display_row);
5045 if !is_blank {
5046 return indent > start_indent;
5047 }
5048 }
5049 false
5050 }
5051 }
5052 }
5053
5054 fn foldable_range_for_line(
5055 &self,
5056 display_map: &DisplaySnapshot,
5057 start_row: u32,
5058 ) -> Range<Point> {
5059 let max_point = display_map.max_point();
5060
5061 let (start_indent, _) = display_map.line_indent(start_row);
5062 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5063 let mut end = None;
5064 for row in start_row + 1..=max_point.row() {
5065 let (indent, is_blank) = display_map.line_indent(row);
5066 if !is_blank && indent <= start_indent {
5067 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5068 break;
5069 }
5070 }
5071
5072 let end = end.unwrap_or(max_point);
5073 return start.to_point(display_map)..end.to_point(display_map);
5074 }
5075
5076 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5077 let selections = self.local_selections::<Point>(cx);
5078 let ranges = selections.into_iter().map(|s| s.start..s.end);
5079 self.fold_ranges(ranges, cx);
5080 }
5081
5082 fn fold_ranges<T: ToOffset>(
5083 &mut self,
5084 ranges: impl IntoIterator<Item = Range<T>>,
5085 cx: &mut ViewContext<Self>,
5086 ) {
5087 let mut ranges = ranges.into_iter().peekable();
5088 if ranges.peek().is_some() {
5089 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5090 self.request_autoscroll(Autoscroll::Fit, cx);
5091 cx.notify();
5092 }
5093 }
5094
5095 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5096 if !ranges.is_empty() {
5097 self.display_map
5098 .update(cx, |map, cx| map.unfold(ranges, cx));
5099 self.request_autoscroll(Autoscroll::Fit, cx);
5100 cx.notify();
5101 }
5102 }
5103
5104 pub fn insert_blocks(
5105 &mut self,
5106 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5107 cx: &mut ViewContext<Self>,
5108 ) -> Vec<BlockId> {
5109 let blocks = self
5110 .display_map
5111 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5112 self.request_autoscroll(Autoscroll::Fit, cx);
5113 blocks
5114 }
5115
5116 pub fn replace_blocks(
5117 &mut self,
5118 blocks: HashMap<BlockId, RenderBlock>,
5119 cx: &mut ViewContext<Self>,
5120 ) {
5121 self.display_map
5122 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5123 self.request_autoscroll(Autoscroll::Fit, cx);
5124 }
5125
5126 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5127 self.display_map.update(cx, |display_map, cx| {
5128 display_map.remove_blocks(block_ids, cx)
5129 });
5130 }
5131
5132 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5133 self.display_map
5134 .update(cx, |map, cx| map.snapshot(cx))
5135 .longest_row()
5136 }
5137
5138 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5139 self.display_map
5140 .update(cx, |map, cx| map.snapshot(cx))
5141 .max_point()
5142 }
5143
5144 pub fn text(&self, cx: &AppContext) -> String {
5145 self.buffer.read(cx).read(cx).text()
5146 }
5147
5148 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5149 self.display_map
5150 .update(cx, |map, cx| map.snapshot(cx))
5151 .text()
5152 }
5153
5154 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5155 let language = self.language(cx);
5156 let settings = self.settings.borrow();
5157 let mode = self
5158 .soft_wrap_mode_override
5159 .unwrap_or_else(|| settings.soft_wrap(language));
5160 match mode {
5161 settings::SoftWrap::None => SoftWrap::None,
5162 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5163 settings::SoftWrap::PreferredLineLength => {
5164 SoftWrap::Column(settings.preferred_line_length(language))
5165 }
5166 }
5167 }
5168
5169 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5170 self.soft_wrap_mode_override = Some(mode);
5171 cx.notify();
5172 }
5173
5174 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5175 self.display_map
5176 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5177 }
5178
5179 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
5180 self.highlighted_rows = rows;
5181 }
5182
5183 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5184 self.highlighted_rows.clone()
5185 }
5186
5187 pub fn highlight_ranges<T: 'static>(
5188 &mut self,
5189 ranges: Vec<Range<Anchor>>,
5190 color: Color,
5191 cx: &mut ViewContext<Self>,
5192 ) {
5193 self.highlighted_ranges
5194 .insert(TypeId::of::<T>(), (color, ranges));
5195 cx.notify();
5196 }
5197
5198 pub fn clear_highlighted_ranges<T: 'static>(
5199 &mut self,
5200 cx: &mut ViewContext<Self>,
5201 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5202 cx.notify();
5203 self.highlighted_ranges.remove(&TypeId::of::<T>())
5204 }
5205
5206 #[cfg(feature = "test-support")]
5207 pub fn all_highlighted_ranges(
5208 &mut self,
5209 cx: &mut ViewContext<Self>,
5210 ) -> Vec<(Range<DisplayPoint>, Color)> {
5211 let snapshot = self.snapshot(cx);
5212 let buffer = &snapshot.buffer_snapshot;
5213 let start = buffer.anchor_before(0);
5214 let end = buffer.anchor_after(buffer.len());
5215 self.highlighted_ranges_in_range(start..end, &snapshot)
5216 }
5217
5218 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5219 self.highlighted_ranges
5220 .get(&TypeId::of::<T>())
5221 .map(|(color, ranges)| (*color, ranges.as_slice()))
5222 }
5223
5224 pub fn highlighted_ranges_in_range(
5225 &self,
5226 search_range: Range<Anchor>,
5227 display_snapshot: &DisplaySnapshot,
5228 ) -> Vec<(Range<DisplayPoint>, Color)> {
5229 let mut results = Vec::new();
5230 let buffer = &display_snapshot.buffer_snapshot;
5231 for (color, ranges) in self.highlighted_ranges.values() {
5232 let start_ix = match ranges.binary_search_by(|probe| {
5233 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5234 if cmp.is_gt() {
5235 Ordering::Greater
5236 } else {
5237 Ordering::Less
5238 }
5239 }) {
5240 Ok(i) | Err(i) => i,
5241 };
5242 for range in &ranges[start_ix..] {
5243 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5244 break;
5245 }
5246 let start = range
5247 .start
5248 .to_point(buffer)
5249 .to_display_point(display_snapshot);
5250 let end = range
5251 .end
5252 .to_point(buffer)
5253 .to_display_point(display_snapshot);
5254 results.push((start..end, *color))
5255 }
5256 }
5257 results
5258 }
5259
5260 fn next_blink_epoch(&mut self) -> usize {
5261 self.blink_epoch += 1;
5262 self.blink_epoch
5263 }
5264
5265 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5266 if !self.focused {
5267 return;
5268 }
5269
5270 self.show_local_cursors = true;
5271 cx.notify();
5272
5273 let epoch = self.next_blink_epoch();
5274 cx.spawn(|this, mut cx| {
5275 let this = this.downgrade();
5276 async move {
5277 Timer::after(CURSOR_BLINK_INTERVAL).await;
5278 if let Some(this) = this.upgrade(&cx) {
5279 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5280 }
5281 }
5282 })
5283 .detach();
5284 }
5285
5286 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5287 if epoch == self.blink_epoch {
5288 self.blinking_paused = false;
5289 self.blink_cursors(epoch, cx);
5290 }
5291 }
5292
5293 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5294 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5295 self.show_local_cursors = !self.show_local_cursors;
5296 cx.notify();
5297
5298 let epoch = self.next_blink_epoch();
5299 cx.spawn(|this, mut cx| {
5300 let this = this.downgrade();
5301 async move {
5302 Timer::after(CURSOR_BLINK_INTERVAL).await;
5303 if let Some(this) = this.upgrade(&cx) {
5304 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5305 }
5306 }
5307 })
5308 .detach();
5309 }
5310 }
5311
5312 pub fn show_local_cursors(&self) -> bool {
5313 self.show_local_cursors
5314 }
5315
5316 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5317 cx.notify();
5318 }
5319
5320 fn on_buffer_event(
5321 &mut self,
5322 _: ModelHandle<MultiBuffer>,
5323 event: &language::Event,
5324 cx: &mut ViewContext<Self>,
5325 ) {
5326 match event {
5327 language::Event::Edited => {
5328 self.refresh_active_diagnostics(cx);
5329 self.refresh_code_actions(cx);
5330 cx.emit(Event::Edited);
5331 }
5332 language::Event::Dirtied => cx.emit(Event::Dirtied),
5333 language::Event::Saved => cx.emit(Event::Saved),
5334 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5335 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5336 language::Event::Closed => cx.emit(Event::Closed),
5337 language::Event::DiagnosticsUpdated => {
5338 self.refresh_active_diagnostics(cx);
5339 }
5340 _ => {}
5341 }
5342 }
5343
5344 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5345 cx.notify();
5346 }
5347}
5348
5349impl EditorSnapshot {
5350 pub fn is_focused(&self) -> bool {
5351 self.is_focused
5352 }
5353
5354 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5355 self.placeholder_text.as_ref()
5356 }
5357
5358 pub fn scroll_position(&self) -> Vector2F {
5359 compute_scroll_position(
5360 &self.display_snapshot,
5361 self.scroll_position,
5362 &self.scroll_top_anchor,
5363 )
5364 }
5365}
5366
5367impl Deref for EditorSnapshot {
5368 type Target = DisplaySnapshot;
5369
5370 fn deref(&self) -> &Self::Target {
5371 &self.display_snapshot
5372 }
5373}
5374
5375fn compute_scroll_position(
5376 snapshot: &DisplaySnapshot,
5377 mut scroll_position: Vector2F,
5378 scroll_top_anchor: &Option<Anchor>,
5379) -> Vector2F {
5380 if let Some(anchor) = scroll_top_anchor {
5381 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5382 scroll_position.set_y(scroll_top + scroll_position.y());
5383 } else {
5384 scroll_position.set_y(0.);
5385 }
5386 scroll_position
5387}
5388
5389#[derive(Copy, Clone)]
5390pub enum Event {
5391 Activate,
5392 Edited,
5393 Blurred,
5394 Dirtied,
5395 Saved,
5396 TitleChanged,
5397 SelectionsChanged,
5398 Closed,
5399}
5400
5401impl Entity for Editor {
5402 type Event = Event;
5403}
5404
5405impl View for Editor {
5406 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5407 let style = self.style(cx);
5408 self.display_map.update(cx, |map, cx| {
5409 map.set_font(style.text.font_id, style.text.font_size, cx)
5410 });
5411 EditorElement::new(self.handle.clone(), style.clone()).boxed()
5412 }
5413
5414 fn ui_name() -> &'static str {
5415 "Editor"
5416 }
5417
5418 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5419 self.focused = true;
5420 self.blink_cursors(self.blink_epoch, cx);
5421 self.buffer.update(cx, |buffer, cx| {
5422 buffer.finalize_last_transaction(cx);
5423 buffer.set_active_selections(&self.selections, cx)
5424 });
5425 }
5426
5427 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5428 self.focused = false;
5429 self.show_local_cursors = false;
5430 self.buffer
5431 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5432 self.hide_context_menu(cx);
5433 cx.emit(Event::Blurred);
5434 cx.notify();
5435 }
5436
5437 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5438 let mut cx = Self::default_keymap_context();
5439 let mode = match self.mode {
5440 EditorMode::SingleLine => "single_line",
5441 EditorMode::AutoHeight { .. } => "auto_height",
5442 EditorMode::Full => "full",
5443 };
5444 cx.map.insert("mode".into(), mode.into());
5445 if self.pending_rename.is_some() {
5446 cx.set.insert("renaming".into());
5447 }
5448 match self.context_menu.as_ref() {
5449 Some(ContextMenu::Completions(_)) => {
5450 cx.set.insert("showing_completions".into());
5451 }
5452 Some(ContextMenu::CodeActions(_)) => {
5453 cx.set.insert("showing_code_actions".into());
5454 }
5455 None => {}
5456 }
5457 cx
5458 }
5459}
5460
5461fn build_style(
5462 settings: &Settings,
5463 get_field_editor_theme: Option<GetFieldEditorTheme>,
5464 cx: &AppContext,
5465) -> EditorStyle {
5466 let theme = settings.theme.editor.clone();
5467 if let Some(get_field_editor_theme) = get_field_editor_theme {
5468 let field_editor_theme = get_field_editor_theme(&settings.theme);
5469 EditorStyle {
5470 text: field_editor_theme.text,
5471 placeholder_text: field_editor_theme.placeholder_text,
5472 theme,
5473 }
5474 } else {
5475 let font_cache = cx.font_cache();
5476 let font_family_id = settings.buffer_font_family;
5477 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5478 let font_properties = Default::default();
5479 let font_id = font_cache
5480 .select_font(font_family_id, &font_properties)
5481 .unwrap();
5482 let font_size = settings.buffer_font_size;
5483 EditorStyle {
5484 text: TextStyle {
5485 color: settings.theme.editor.text_color,
5486 font_family_name,
5487 font_family_id,
5488 font_id,
5489 font_size,
5490 font_properties,
5491 underline: None,
5492 },
5493 placeholder_text: None,
5494 theme,
5495 }
5496 }
5497}
5498
5499impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5500 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5501 let start = self.start.to_point(buffer);
5502 let end = self.end.to_point(buffer);
5503 if self.reversed {
5504 end..start
5505 } else {
5506 start..end
5507 }
5508 }
5509
5510 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5511 let start = self.start.to_offset(buffer);
5512 let end = self.end.to_offset(buffer);
5513 if self.reversed {
5514 end..start
5515 } else {
5516 start..end
5517 }
5518 }
5519
5520 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5521 let start = self
5522 .start
5523 .to_point(&map.buffer_snapshot)
5524 .to_display_point(map);
5525 let end = self
5526 .end
5527 .to_point(&map.buffer_snapshot)
5528 .to_display_point(map);
5529 if self.reversed {
5530 end..start
5531 } else {
5532 start..end
5533 }
5534 }
5535
5536 fn spanned_rows(
5537 &self,
5538 include_end_if_at_line_start: bool,
5539 map: &DisplaySnapshot,
5540 ) -> Range<u32> {
5541 let start = self.start.to_point(&map.buffer_snapshot);
5542 let mut end = self.end.to_point(&map.buffer_snapshot);
5543 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5544 end.row -= 1;
5545 }
5546
5547 let buffer_start = map.prev_line_boundary(start).0;
5548 let buffer_end = map.next_line_boundary(end).0;
5549 buffer_start.row..buffer_end.row + 1
5550 }
5551}
5552
5553impl<T: InvalidationRegion> InvalidationStack<T> {
5554 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5555 where
5556 S: Clone + ToOffset,
5557 {
5558 while let Some(region) = self.last() {
5559 let all_selections_inside_invalidation_ranges =
5560 if selections.len() == region.ranges().len() {
5561 selections
5562 .iter()
5563 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5564 .all(|(selection, invalidation_range)| {
5565 let head = selection.head().to_offset(&buffer);
5566 invalidation_range.start <= head && invalidation_range.end >= head
5567 })
5568 } else {
5569 false
5570 };
5571
5572 if all_selections_inside_invalidation_ranges {
5573 break;
5574 } else {
5575 self.pop();
5576 }
5577 }
5578 }
5579}
5580
5581impl<T> Default for InvalidationStack<T> {
5582 fn default() -> Self {
5583 Self(Default::default())
5584 }
5585}
5586
5587impl<T> Deref for InvalidationStack<T> {
5588 type Target = Vec<T>;
5589
5590 fn deref(&self) -> &Self::Target {
5591 &self.0
5592 }
5593}
5594
5595impl<T> DerefMut for InvalidationStack<T> {
5596 fn deref_mut(&mut self) -> &mut Self::Target {
5597 &mut self.0
5598 }
5599}
5600
5601impl InvalidationRegion for BracketPairState {
5602 fn ranges(&self) -> &[Range<Anchor>] {
5603 &self.ranges
5604 }
5605}
5606
5607impl InvalidationRegion for SnippetState {
5608 fn ranges(&self) -> &[Range<Anchor>] {
5609 &self.ranges[self.active_index]
5610 }
5611}
5612
5613impl Deref for EditorStyle {
5614 type Target = theme::Editor;
5615
5616 fn deref(&self) -> &Self::Target {
5617 &self.theme
5618 }
5619}
5620
5621pub fn diagnostic_block_renderer(
5622 diagnostic: Diagnostic,
5623 is_valid: bool,
5624 settings: watch::Receiver<Settings>,
5625) -> RenderBlock {
5626 let mut highlighted_lines = Vec::new();
5627 for line in diagnostic.message.lines() {
5628 highlighted_lines.push(highlight_diagnostic_message(line));
5629 }
5630
5631 Arc::new(move |cx: &BlockContext| {
5632 let settings = settings.borrow();
5633 let theme = &settings.theme.editor;
5634 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5635 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5636 Flex::column()
5637 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5638 Label::new(
5639 line.clone(),
5640 style.message.clone().with_font_size(font_size),
5641 )
5642 .with_highlights(highlights.clone())
5643 .contained()
5644 .with_margin_left(cx.anchor_x)
5645 .boxed()
5646 }))
5647 .aligned()
5648 .left()
5649 .boxed()
5650 })
5651}
5652
5653pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5654 let mut message_without_backticks = String::new();
5655 let mut prev_offset = 0;
5656 let mut inside_block = false;
5657 let mut highlights = Vec::new();
5658 for (match_ix, (offset, _)) in message
5659 .match_indices('`')
5660 .chain([(message.len(), "")])
5661 .enumerate()
5662 {
5663 message_without_backticks.push_str(&message[prev_offset..offset]);
5664 if inside_block {
5665 highlights.extend(prev_offset - match_ix..offset - match_ix);
5666 }
5667
5668 inside_block = !inside_block;
5669 prev_offset = offset + 1;
5670 }
5671
5672 (message_without_backticks, highlights)
5673}
5674
5675pub fn diagnostic_style(
5676 severity: DiagnosticSeverity,
5677 valid: bool,
5678 theme: &theme::Editor,
5679) -> DiagnosticStyle {
5680 match (severity, valid) {
5681 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5682 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5683 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5684 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5685 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5686 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5687 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5688 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5689 _ => theme.invalid_hint_diagnostic.clone(),
5690 }
5691}
5692
5693pub fn combine_syntax_and_fuzzy_match_highlights(
5694 text: &str,
5695 default_style: HighlightStyle,
5696 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5697 match_indices: &[usize],
5698) -> Vec<(Range<usize>, HighlightStyle)> {
5699 let mut result = Vec::new();
5700 let mut match_indices = match_indices.iter().copied().peekable();
5701
5702 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5703 {
5704 syntax_highlight.font_properties.weight(Default::default());
5705
5706 // Add highlights for any fuzzy match characters before the next
5707 // syntax highlight range.
5708 while let Some(&match_index) = match_indices.peek() {
5709 if match_index >= range.start {
5710 break;
5711 }
5712 match_indices.next();
5713 let end_index = char_ix_after(match_index, text);
5714 let mut match_style = default_style;
5715 match_style.font_properties.weight(fonts::Weight::BOLD);
5716 result.push((match_index..end_index, match_style));
5717 }
5718
5719 if range.start == usize::MAX {
5720 break;
5721 }
5722
5723 // Add highlights for any fuzzy match characters within the
5724 // syntax highlight range.
5725 let mut offset = range.start;
5726 while let Some(&match_index) = match_indices.peek() {
5727 if match_index >= range.end {
5728 break;
5729 }
5730
5731 match_indices.next();
5732 if match_index > offset {
5733 result.push((offset..match_index, syntax_highlight));
5734 }
5735
5736 let mut end_index = char_ix_after(match_index, text);
5737 while let Some(&next_match_index) = match_indices.peek() {
5738 if next_match_index == end_index && next_match_index < range.end {
5739 end_index = char_ix_after(next_match_index, text);
5740 match_indices.next();
5741 } else {
5742 break;
5743 }
5744 }
5745
5746 let mut match_style = syntax_highlight;
5747 match_style.font_properties.weight(fonts::Weight::BOLD);
5748 result.push((match_index..end_index, match_style));
5749 offset = end_index;
5750 }
5751
5752 if offset < range.end {
5753 result.push((offset..range.end, syntax_highlight));
5754 }
5755 }
5756
5757 fn char_ix_after(ix: usize, text: &str) -> usize {
5758 ix + text[ix..].chars().next().unwrap().len_utf8()
5759 }
5760
5761 result
5762}
5763
5764pub fn styled_runs_for_code_label<'a>(
5765 label: &'a CodeLabel,
5766 default_color: Color,
5767 syntax_theme: &'a theme::SyntaxTheme,
5768) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5769 const MUTED_OPACITY: usize = 165;
5770
5771 let mut muted_default_style = HighlightStyle {
5772 color: default_color,
5773 ..Default::default()
5774 };
5775 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5776
5777 let mut prev_end = label.filter_range.end;
5778 label
5779 .runs
5780 .iter()
5781 .enumerate()
5782 .flat_map(move |(ix, (range, highlight_id))| {
5783 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5784 style
5785 } else {
5786 return Default::default();
5787 };
5788 let mut muted_style = style.clone();
5789 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5790
5791 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5792 if range.start >= label.filter_range.end {
5793 if range.start > prev_end {
5794 runs.push((prev_end..range.start, muted_default_style));
5795 }
5796 runs.push((range.clone(), muted_style));
5797 } else if range.end <= label.filter_range.end {
5798 runs.push((range.clone(), style));
5799 } else {
5800 runs.push((range.start..label.filter_range.end, style));
5801 runs.push((label.filter_range.end..range.end, muted_style));
5802 }
5803 prev_end = cmp::max(prev_end, range.end);
5804
5805 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5806 runs.push((prev_end..label.text.len(), muted_default_style));
5807 }
5808
5809 runs
5810 })
5811}
5812
5813#[cfg(test)]
5814mod tests {
5815 use super::*;
5816 use language::LanguageConfig;
5817 use lsp::FakeLanguageServer;
5818 use project::{FakeFs, ProjectPath};
5819 use smol::stream::StreamExt;
5820 use std::{cell::RefCell, rc::Rc, time::Instant};
5821 use text::Point;
5822 use unindent::Unindent;
5823 use util::test::sample_text;
5824
5825 #[gpui::test]
5826 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5827 let mut now = Instant::now();
5828 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5829 let group_interval = buffer.read(cx).transaction_group_interval();
5830 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5831 let settings = Settings::test(cx);
5832 let (_, editor) = cx.add_window(Default::default(), |cx| {
5833 build_editor(buffer.clone(), settings, cx)
5834 });
5835
5836 editor.update(cx, |editor, cx| {
5837 editor.start_transaction_at(now, cx);
5838 editor.select_ranges([2..4], None, cx);
5839 editor.insert("cd", cx);
5840 editor.end_transaction_at(now, cx);
5841 assert_eq!(editor.text(cx), "12cd56");
5842 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5843
5844 editor.start_transaction_at(now, cx);
5845 editor.select_ranges([4..5], None, cx);
5846 editor.insert("e", cx);
5847 editor.end_transaction_at(now, cx);
5848 assert_eq!(editor.text(cx), "12cde6");
5849 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5850
5851 now += group_interval + Duration::from_millis(1);
5852 editor.select_ranges([2..2], None, cx);
5853
5854 // Simulate an edit in another editor
5855 buffer.update(cx, |buffer, cx| {
5856 buffer.start_transaction_at(now, cx);
5857 buffer.edit([0..1], "a", cx);
5858 buffer.edit([1..1], "b", cx);
5859 buffer.end_transaction_at(now, cx);
5860 });
5861
5862 assert_eq!(editor.text(cx), "ab2cde6");
5863 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5864
5865 // Last transaction happened past the group interval in a different editor.
5866 // Undo it individually and don't restore selections.
5867 editor.undo(&Undo, cx);
5868 assert_eq!(editor.text(cx), "12cde6");
5869 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5870
5871 // First two transactions happened within the group interval in this editor.
5872 // Undo them together and restore selections.
5873 editor.undo(&Undo, cx);
5874 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5875 assert_eq!(editor.text(cx), "123456");
5876 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5877
5878 // Redo the first two transactions together.
5879 editor.redo(&Redo, cx);
5880 assert_eq!(editor.text(cx), "12cde6");
5881 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5882
5883 // Redo the last transaction on its own.
5884 editor.redo(&Redo, cx);
5885 assert_eq!(editor.text(cx), "ab2cde6");
5886 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5887
5888 // Test empty transactions.
5889 editor.start_transaction_at(now, cx);
5890 editor.end_transaction_at(now, cx);
5891 editor.undo(&Undo, cx);
5892 assert_eq!(editor.text(cx), "12cde6");
5893 });
5894 }
5895
5896 #[gpui::test]
5897 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5898 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5899 let settings = Settings::test(cx);
5900 let (_, editor) =
5901 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5902
5903 editor.update(cx, |view, cx| {
5904 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5905 });
5906
5907 assert_eq!(
5908 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5909 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5910 );
5911
5912 editor.update(cx, |view, cx| {
5913 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5914 });
5915
5916 assert_eq!(
5917 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5918 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5919 );
5920
5921 editor.update(cx, |view, cx| {
5922 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5923 });
5924
5925 assert_eq!(
5926 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5927 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5928 );
5929
5930 editor.update(cx, |view, cx| {
5931 view.end_selection(cx);
5932 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5933 });
5934
5935 assert_eq!(
5936 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5937 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5938 );
5939
5940 editor.update(cx, |view, cx| {
5941 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5942 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5943 });
5944
5945 assert_eq!(
5946 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5947 [
5948 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5949 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5950 ]
5951 );
5952
5953 editor.update(cx, |view, cx| {
5954 view.end_selection(cx);
5955 });
5956
5957 assert_eq!(
5958 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5959 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5960 );
5961 }
5962
5963 #[gpui::test]
5964 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5965 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5966 let settings = Settings::test(cx);
5967 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5968
5969 view.update(cx, |view, cx| {
5970 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5971 assert_eq!(
5972 view.selected_display_ranges(cx),
5973 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5974 );
5975 });
5976
5977 view.update(cx, |view, cx| {
5978 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5979 assert_eq!(
5980 view.selected_display_ranges(cx),
5981 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5982 );
5983 });
5984
5985 view.update(cx, |view, cx| {
5986 view.cancel(&Cancel, cx);
5987 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5988 assert_eq!(
5989 view.selected_display_ranges(cx),
5990 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5991 );
5992 });
5993 }
5994
5995 #[gpui::test]
5996 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5997 cx.add_window(Default::default(), |cx| {
5998 use workspace::ItemView;
5999 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6000 let settings = Settings::test(&cx);
6001 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6002 let mut editor = build_editor(buffer.clone(), settings, cx);
6003 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6004
6005 // Move the cursor a small distance.
6006 // Nothing is added to the navigation history.
6007 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6008 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6009 assert!(nav_history.borrow_mut().pop_backward().is_none());
6010
6011 // Move the cursor a large distance.
6012 // The history can jump back to the previous position.
6013 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6014 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6015 editor.navigate(nav_entry.data.unwrap(), cx);
6016 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6017 assert_eq!(
6018 editor.selected_display_ranges(cx),
6019 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6020 );
6021
6022 // Move the cursor a small distance via the mouse.
6023 // Nothing is added to the navigation history.
6024 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6025 editor.end_selection(cx);
6026 assert_eq!(
6027 editor.selected_display_ranges(cx),
6028 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6029 );
6030 assert!(nav_history.borrow_mut().pop_backward().is_none());
6031
6032 // Move the cursor a large distance via the mouse.
6033 // The history can jump back to the previous position.
6034 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6035 editor.end_selection(cx);
6036 assert_eq!(
6037 editor.selected_display_ranges(cx),
6038 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6039 );
6040 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6041 editor.navigate(nav_entry.data.unwrap(), cx);
6042 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6043 assert_eq!(
6044 editor.selected_display_ranges(cx),
6045 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6046 );
6047
6048 editor
6049 });
6050 }
6051
6052 #[gpui::test]
6053 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6054 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6055 let settings = Settings::test(cx);
6056 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6057
6058 view.update(cx, |view, cx| {
6059 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6060 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6061 view.end_selection(cx);
6062
6063 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6064 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6065 view.end_selection(cx);
6066 assert_eq!(
6067 view.selected_display_ranges(cx),
6068 [
6069 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6070 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6071 ]
6072 );
6073 });
6074
6075 view.update(cx, |view, cx| {
6076 view.cancel(&Cancel, cx);
6077 assert_eq!(
6078 view.selected_display_ranges(cx),
6079 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6080 );
6081 });
6082
6083 view.update(cx, |view, cx| {
6084 view.cancel(&Cancel, cx);
6085 assert_eq!(
6086 view.selected_display_ranges(cx),
6087 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6088 );
6089 });
6090 }
6091
6092 #[gpui::test]
6093 fn test_fold(cx: &mut gpui::MutableAppContext) {
6094 let buffer = MultiBuffer::build_simple(
6095 &"
6096 impl Foo {
6097 // Hello!
6098
6099 fn a() {
6100 1
6101 }
6102
6103 fn b() {
6104 2
6105 }
6106
6107 fn c() {
6108 3
6109 }
6110 }
6111 "
6112 .unindent(),
6113 cx,
6114 );
6115 let settings = Settings::test(&cx);
6116 let (_, view) = cx.add_window(Default::default(), |cx| {
6117 build_editor(buffer.clone(), settings, cx)
6118 });
6119
6120 view.update(cx, |view, cx| {
6121 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6122 view.fold(&Fold, cx);
6123 assert_eq!(
6124 view.display_text(cx),
6125 "
6126 impl Foo {
6127 // Hello!
6128
6129 fn a() {
6130 1
6131 }
6132
6133 fn b() {…
6134 }
6135
6136 fn c() {…
6137 }
6138 }
6139 "
6140 .unindent(),
6141 );
6142
6143 view.fold(&Fold, cx);
6144 assert_eq!(
6145 view.display_text(cx),
6146 "
6147 impl Foo {…
6148 }
6149 "
6150 .unindent(),
6151 );
6152
6153 view.unfold(&Unfold, cx);
6154 assert_eq!(
6155 view.display_text(cx),
6156 "
6157 impl Foo {
6158 // Hello!
6159
6160 fn a() {
6161 1
6162 }
6163
6164 fn b() {…
6165 }
6166
6167 fn c() {…
6168 }
6169 }
6170 "
6171 .unindent(),
6172 );
6173
6174 view.unfold(&Unfold, cx);
6175 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6176 });
6177 }
6178
6179 #[gpui::test]
6180 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6181 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6182 let settings = Settings::test(&cx);
6183 let (_, view) = cx.add_window(Default::default(), |cx| {
6184 build_editor(buffer.clone(), settings, cx)
6185 });
6186
6187 buffer.update(cx, |buffer, cx| {
6188 buffer.edit(
6189 vec![
6190 Point::new(1, 0)..Point::new(1, 0),
6191 Point::new(1, 1)..Point::new(1, 1),
6192 ],
6193 "\t",
6194 cx,
6195 );
6196 });
6197
6198 view.update(cx, |view, cx| {
6199 assert_eq!(
6200 view.selected_display_ranges(cx),
6201 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6202 );
6203
6204 view.move_down(&MoveDown, cx);
6205 assert_eq!(
6206 view.selected_display_ranges(cx),
6207 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6208 );
6209
6210 view.move_right(&MoveRight, cx);
6211 assert_eq!(
6212 view.selected_display_ranges(cx),
6213 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6214 );
6215
6216 view.move_left(&MoveLeft, cx);
6217 assert_eq!(
6218 view.selected_display_ranges(cx),
6219 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6220 );
6221
6222 view.move_up(&MoveUp, cx);
6223 assert_eq!(
6224 view.selected_display_ranges(cx),
6225 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6226 );
6227
6228 view.move_to_end(&MoveToEnd, cx);
6229 assert_eq!(
6230 view.selected_display_ranges(cx),
6231 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6232 );
6233
6234 view.move_to_beginning(&MoveToBeginning, cx);
6235 assert_eq!(
6236 view.selected_display_ranges(cx),
6237 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6238 );
6239
6240 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6241 view.select_to_beginning(&SelectToBeginning, cx);
6242 assert_eq!(
6243 view.selected_display_ranges(cx),
6244 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6245 );
6246
6247 view.select_to_end(&SelectToEnd, cx);
6248 assert_eq!(
6249 view.selected_display_ranges(cx),
6250 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6251 );
6252 });
6253 }
6254
6255 #[gpui::test]
6256 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6257 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6258 let settings = Settings::test(&cx);
6259 let (_, view) = cx.add_window(Default::default(), |cx| {
6260 build_editor(buffer.clone(), settings, cx)
6261 });
6262
6263 assert_eq!('ⓐ'.len_utf8(), 3);
6264 assert_eq!('α'.len_utf8(), 2);
6265
6266 view.update(cx, |view, cx| {
6267 view.fold_ranges(
6268 vec![
6269 Point::new(0, 6)..Point::new(0, 12),
6270 Point::new(1, 2)..Point::new(1, 4),
6271 Point::new(2, 4)..Point::new(2, 8),
6272 ],
6273 cx,
6274 );
6275 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6276
6277 view.move_right(&MoveRight, cx);
6278 assert_eq!(
6279 view.selected_display_ranges(cx),
6280 &[empty_range(0, "ⓐ".len())]
6281 );
6282 view.move_right(&MoveRight, cx);
6283 assert_eq!(
6284 view.selected_display_ranges(cx),
6285 &[empty_range(0, "ⓐⓑ".len())]
6286 );
6287 view.move_right(&MoveRight, cx);
6288 assert_eq!(
6289 view.selected_display_ranges(cx),
6290 &[empty_range(0, "ⓐⓑ…".len())]
6291 );
6292
6293 view.move_down(&MoveDown, cx);
6294 assert_eq!(
6295 view.selected_display_ranges(cx),
6296 &[empty_range(1, "ab…".len())]
6297 );
6298 view.move_left(&MoveLeft, cx);
6299 assert_eq!(
6300 view.selected_display_ranges(cx),
6301 &[empty_range(1, "ab".len())]
6302 );
6303 view.move_left(&MoveLeft, cx);
6304 assert_eq!(
6305 view.selected_display_ranges(cx),
6306 &[empty_range(1, "a".len())]
6307 );
6308
6309 view.move_down(&MoveDown, cx);
6310 assert_eq!(
6311 view.selected_display_ranges(cx),
6312 &[empty_range(2, "α".len())]
6313 );
6314 view.move_right(&MoveRight, cx);
6315 assert_eq!(
6316 view.selected_display_ranges(cx),
6317 &[empty_range(2, "αβ".len())]
6318 );
6319 view.move_right(&MoveRight, cx);
6320 assert_eq!(
6321 view.selected_display_ranges(cx),
6322 &[empty_range(2, "αβ…".len())]
6323 );
6324 view.move_right(&MoveRight, cx);
6325 assert_eq!(
6326 view.selected_display_ranges(cx),
6327 &[empty_range(2, "αβ…ε".len())]
6328 );
6329
6330 view.move_up(&MoveUp, cx);
6331 assert_eq!(
6332 view.selected_display_ranges(cx),
6333 &[empty_range(1, "ab…e".len())]
6334 );
6335 view.move_up(&MoveUp, cx);
6336 assert_eq!(
6337 view.selected_display_ranges(cx),
6338 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6339 );
6340 view.move_left(&MoveLeft, cx);
6341 assert_eq!(
6342 view.selected_display_ranges(cx),
6343 &[empty_range(0, "ⓐⓑ…".len())]
6344 );
6345 view.move_left(&MoveLeft, cx);
6346 assert_eq!(
6347 view.selected_display_ranges(cx),
6348 &[empty_range(0, "ⓐⓑ".len())]
6349 );
6350 view.move_left(&MoveLeft, cx);
6351 assert_eq!(
6352 view.selected_display_ranges(cx),
6353 &[empty_range(0, "ⓐ".len())]
6354 );
6355 });
6356 }
6357
6358 #[gpui::test]
6359 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6360 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6361 let settings = Settings::test(&cx);
6362 let (_, view) = cx.add_window(Default::default(), |cx| {
6363 build_editor(buffer.clone(), settings, cx)
6364 });
6365 view.update(cx, |view, cx| {
6366 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6367 view.move_down(&MoveDown, cx);
6368 assert_eq!(
6369 view.selected_display_ranges(cx),
6370 &[empty_range(1, "abcd".len())]
6371 );
6372
6373 view.move_down(&MoveDown, cx);
6374 assert_eq!(
6375 view.selected_display_ranges(cx),
6376 &[empty_range(2, "αβγ".len())]
6377 );
6378
6379 view.move_down(&MoveDown, cx);
6380 assert_eq!(
6381 view.selected_display_ranges(cx),
6382 &[empty_range(3, "abcd".len())]
6383 );
6384
6385 view.move_down(&MoveDown, cx);
6386 assert_eq!(
6387 view.selected_display_ranges(cx),
6388 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6389 );
6390
6391 view.move_up(&MoveUp, cx);
6392 assert_eq!(
6393 view.selected_display_ranges(cx),
6394 &[empty_range(3, "abcd".len())]
6395 );
6396
6397 view.move_up(&MoveUp, cx);
6398 assert_eq!(
6399 view.selected_display_ranges(cx),
6400 &[empty_range(2, "αβγ".len())]
6401 );
6402 });
6403 }
6404
6405 #[gpui::test]
6406 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6407 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6408 let settings = Settings::test(&cx);
6409 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6410 view.update(cx, |view, cx| {
6411 view.select_display_ranges(
6412 &[
6413 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6414 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6415 ],
6416 cx,
6417 );
6418 });
6419
6420 view.update(cx, |view, cx| {
6421 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6422 assert_eq!(
6423 view.selected_display_ranges(cx),
6424 &[
6425 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6426 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6427 ]
6428 );
6429 });
6430
6431 view.update(cx, |view, cx| {
6432 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6433 assert_eq!(
6434 view.selected_display_ranges(cx),
6435 &[
6436 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6437 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6438 ]
6439 );
6440 });
6441
6442 view.update(cx, |view, cx| {
6443 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 &[
6447 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6448 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6449 ]
6450 );
6451 });
6452
6453 view.update(cx, |view, cx| {
6454 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6455 assert_eq!(
6456 view.selected_display_ranges(cx),
6457 &[
6458 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6459 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6460 ]
6461 );
6462 });
6463
6464 // Moving to the end of line again is a no-op.
6465 view.update(cx, |view, cx| {
6466 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6467 assert_eq!(
6468 view.selected_display_ranges(cx),
6469 &[
6470 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6471 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6472 ]
6473 );
6474 });
6475
6476 view.update(cx, |view, cx| {
6477 view.move_left(&MoveLeft, cx);
6478 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6479 assert_eq!(
6480 view.selected_display_ranges(cx),
6481 &[
6482 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6483 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6484 ]
6485 );
6486 });
6487
6488 view.update(cx, |view, cx| {
6489 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6490 assert_eq!(
6491 view.selected_display_ranges(cx),
6492 &[
6493 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6494 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6495 ]
6496 );
6497 });
6498
6499 view.update(cx, |view, cx| {
6500 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6501 assert_eq!(
6502 view.selected_display_ranges(cx),
6503 &[
6504 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6505 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6506 ]
6507 );
6508 });
6509
6510 view.update(cx, |view, cx| {
6511 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6512 assert_eq!(
6513 view.selected_display_ranges(cx),
6514 &[
6515 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6516 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6517 ]
6518 );
6519 });
6520
6521 view.update(cx, |view, cx| {
6522 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6523 assert_eq!(view.display_text(cx), "ab\n de");
6524 assert_eq!(
6525 view.selected_display_ranges(cx),
6526 &[
6527 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6528 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6529 ]
6530 );
6531 });
6532
6533 view.update(cx, |view, cx| {
6534 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6535 assert_eq!(view.display_text(cx), "\n");
6536 assert_eq!(
6537 view.selected_display_ranges(cx),
6538 &[
6539 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6540 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6541 ]
6542 );
6543 });
6544 }
6545
6546 #[gpui::test]
6547 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6548 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6549 let settings = Settings::test(&cx);
6550 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6551 view.update(cx, |view, cx| {
6552 view.select_display_ranges(
6553 &[
6554 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6555 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6556 ],
6557 cx,
6558 );
6559 });
6560
6561 view.update(cx, |view, cx| {
6562 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6563 assert_eq!(
6564 view.selected_display_ranges(cx),
6565 &[
6566 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6567 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6568 ]
6569 );
6570 });
6571
6572 view.update(cx, |view, cx| {
6573 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6574 assert_eq!(
6575 view.selected_display_ranges(cx),
6576 &[
6577 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6578 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6579 ]
6580 );
6581 });
6582
6583 view.update(cx, |view, cx| {
6584 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6585 assert_eq!(
6586 view.selected_display_ranges(cx),
6587 &[
6588 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6589 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6590 ]
6591 );
6592 });
6593
6594 view.update(cx, |view, cx| {
6595 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 &[
6599 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6600 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6601 ]
6602 );
6603 });
6604
6605 view.update(cx, |view, cx| {
6606 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6607 assert_eq!(
6608 view.selected_display_ranges(cx),
6609 &[
6610 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6611 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6612 ]
6613 );
6614 });
6615
6616 view.update(cx, |view, cx| {
6617 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6618 assert_eq!(
6619 view.selected_display_ranges(cx),
6620 &[
6621 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6622 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6623 ]
6624 );
6625 });
6626
6627 view.update(cx, |view, cx| {
6628 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6629 assert_eq!(
6630 view.selected_display_ranges(cx),
6631 &[
6632 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6633 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6634 ]
6635 );
6636 });
6637
6638 view.update(cx, |view, cx| {
6639 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6640 assert_eq!(
6641 view.selected_display_ranges(cx),
6642 &[
6643 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6644 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6645 ]
6646 );
6647 });
6648
6649 view.update(cx, |view, cx| {
6650 view.move_right(&MoveRight, cx);
6651 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 &[
6655 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6656 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6657 ]
6658 );
6659 });
6660
6661 view.update(cx, |view, cx| {
6662 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6663 assert_eq!(
6664 view.selected_display_ranges(cx),
6665 &[
6666 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6667 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6668 ]
6669 );
6670 });
6671
6672 view.update(cx, |view, cx| {
6673 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6674 assert_eq!(
6675 view.selected_display_ranges(cx),
6676 &[
6677 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6678 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6679 ]
6680 );
6681 });
6682 }
6683
6684 #[gpui::test]
6685 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6686 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6687 let settings = Settings::test(&cx);
6688 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6689
6690 view.update(cx, |view, cx| {
6691 view.set_wrap_width(Some(140.), cx);
6692 assert_eq!(
6693 view.display_text(cx),
6694 "use one::{\n two::three::\n four::five\n};"
6695 );
6696
6697 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6698
6699 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6700 assert_eq!(
6701 view.selected_display_ranges(cx),
6702 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6703 );
6704
6705 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6706 assert_eq!(
6707 view.selected_display_ranges(cx),
6708 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6709 );
6710
6711 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6712 assert_eq!(
6713 view.selected_display_ranges(cx),
6714 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6715 );
6716
6717 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6718 assert_eq!(
6719 view.selected_display_ranges(cx),
6720 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6721 );
6722
6723 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6724 assert_eq!(
6725 view.selected_display_ranges(cx),
6726 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6727 );
6728
6729 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6730 assert_eq!(
6731 view.selected_display_ranges(cx),
6732 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6733 );
6734 });
6735 }
6736
6737 #[gpui::test]
6738 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6739 let buffer = MultiBuffer::build_simple("one two three four", cx);
6740 let settings = Settings::test(&cx);
6741 let (_, view) = cx.add_window(Default::default(), |cx| {
6742 build_editor(buffer.clone(), settings, cx)
6743 });
6744
6745 view.update(cx, |view, cx| {
6746 view.select_display_ranges(
6747 &[
6748 // an empty selection - the preceding word fragment is deleted
6749 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6750 // characters selected - they are deleted
6751 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6752 ],
6753 cx,
6754 );
6755 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6756 });
6757
6758 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6759
6760 view.update(cx, |view, cx| {
6761 view.select_display_ranges(
6762 &[
6763 // an empty selection - the following word fragment is deleted
6764 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6765 // characters selected - they are deleted
6766 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6767 ],
6768 cx,
6769 );
6770 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6771 });
6772
6773 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6774 }
6775
6776 #[gpui::test]
6777 fn test_newline(cx: &mut gpui::MutableAppContext) {
6778 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6779 let settings = Settings::test(&cx);
6780 let (_, view) = cx.add_window(Default::default(), |cx| {
6781 build_editor(buffer.clone(), settings, cx)
6782 });
6783
6784 view.update(cx, |view, cx| {
6785 view.select_display_ranges(
6786 &[
6787 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6788 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6789 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6790 ],
6791 cx,
6792 );
6793
6794 view.newline(&Newline, cx);
6795 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6796 });
6797 }
6798
6799 #[gpui::test]
6800 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6801 let buffer = MultiBuffer::build_simple(
6802 "
6803 a
6804 b(
6805 X
6806 )
6807 c(
6808 X
6809 )
6810 "
6811 .unindent()
6812 .as_str(),
6813 cx,
6814 );
6815
6816 let settings = Settings::test(&cx);
6817 let (_, editor) = cx.add_window(Default::default(), |cx| {
6818 let mut editor = build_editor(buffer.clone(), settings, cx);
6819 editor.select_ranges(
6820 [
6821 Point::new(2, 4)..Point::new(2, 5),
6822 Point::new(5, 4)..Point::new(5, 5),
6823 ],
6824 None,
6825 cx,
6826 );
6827 editor
6828 });
6829
6830 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6831 buffer.update(cx, |buffer, cx| {
6832 buffer.edit(
6833 [
6834 Point::new(1, 2)..Point::new(3, 0),
6835 Point::new(4, 2)..Point::new(6, 0),
6836 ],
6837 "",
6838 cx,
6839 );
6840 assert_eq!(
6841 buffer.read(cx).text(),
6842 "
6843 a
6844 b()
6845 c()
6846 "
6847 .unindent()
6848 );
6849 });
6850
6851 editor.update(cx, |editor, cx| {
6852 assert_eq!(
6853 editor.selected_ranges(cx),
6854 &[
6855 Point::new(1, 2)..Point::new(1, 2),
6856 Point::new(2, 2)..Point::new(2, 2),
6857 ],
6858 );
6859
6860 editor.newline(&Newline, cx);
6861 assert_eq!(
6862 editor.text(cx),
6863 "
6864 a
6865 b(
6866 )
6867 c(
6868 )
6869 "
6870 .unindent()
6871 );
6872
6873 // The selections are moved after the inserted newlines
6874 assert_eq!(
6875 editor.selected_ranges(cx),
6876 &[
6877 Point::new(2, 0)..Point::new(2, 0),
6878 Point::new(4, 0)..Point::new(4, 0),
6879 ],
6880 );
6881 });
6882 }
6883
6884 #[gpui::test]
6885 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6886 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6887
6888 let settings = Settings::test(&cx);
6889 let (_, editor) = cx.add_window(Default::default(), |cx| {
6890 let mut editor = build_editor(buffer.clone(), settings, cx);
6891 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6892 editor
6893 });
6894
6895 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6896 buffer.update(cx, |buffer, cx| {
6897 buffer.edit([2..5, 10..13, 18..21], "", cx);
6898 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6899 });
6900
6901 editor.update(cx, |editor, cx| {
6902 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6903
6904 editor.insert("Z", cx);
6905 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6906
6907 // The selections are moved after the inserted characters
6908 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6909 });
6910 }
6911
6912 #[gpui::test]
6913 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6914 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6915 let settings = Settings::test(&cx);
6916 let (_, view) = cx.add_window(Default::default(), |cx| {
6917 build_editor(buffer.clone(), settings, cx)
6918 });
6919
6920 view.update(cx, |view, cx| {
6921 // two selections on the same line
6922 view.select_display_ranges(
6923 &[
6924 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6925 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6926 ],
6927 cx,
6928 );
6929
6930 // indent from mid-tabstop to full tabstop
6931 view.tab(&Tab, cx);
6932 assert_eq!(view.text(cx), " one two\nthree\n four");
6933 assert_eq!(
6934 view.selected_display_ranges(cx),
6935 &[
6936 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6937 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6938 ]
6939 );
6940
6941 // outdent from 1 tabstop to 0 tabstops
6942 view.outdent(&Outdent, cx);
6943 assert_eq!(view.text(cx), "one two\nthree\n four");
6944 assert_eq!(
6945 view.selected_display_ranges(cx),
6946 &[
6947 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6948 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6949 ]
6950 );
6951
6952 // select across line ending
6953 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6954
6955 // indent and outdent affect only the preceding line
6956 view.tab(&Tab, cx);
6957 assert_eq!(view.text(cx), "one two\n three\n four");
6958 assert_eq!(
6959 view.selected_display_ranges(cx),
6960 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6961 );
6962 view.outdent(&Outdent, cx);
6963 assert_eq!(view.text(cx), "one two\nthree\n four");
6964 assert_eq!(
6965 view.selected_display_ranges(cx),
6966 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6967 );
6968
6969 // Ensure that indenting/outdenting works when the cursor is at column 0.
6970 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6971 view.tab(&Tab, cx);
6972 assert_eq!(view.text(cx), "one two\n three\n four");
6973 assert_eq!(
6974 view.selected_display_ranges(cx),
6975 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6976 );
6977
6978 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6979 view.outdent(&Outdent, cx);
6980 assert_eq!(view.text(cx), "one two\nthree\n four");
6981 assert_eq!(
6982 view.selected_display_ranges(cx),
6983 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6984 );
6985 });
6986 }
6987
6988 #[gpui::test]
6989 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6990 let buffer =
6991 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6992 let settings = Settings::test(&cx);
6993 let (_, view) = cx.add_window(Default::default(), |cx| {
6994 build_editor(buffer.clone(), settings, cx)
6995 });
6996
6997 view.update(cx, |view, cx| {
6998 view.select_display_ranges(
6999 &[
7000 // an empty selection - the preceding character is deleted
7001 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7002 // one character selected - it is deleted
7003 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7004 // a line suffix selected - it is deleted
7005 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7006 ],
7007 cx,
7008 );
7009 view.backspace(&Backspace, cx);
7010 });
7011
7012 assert_eq!(
7013 buffer.read(cx).read(cx).text(),
7014 "oe two three\nfou five six\nseven ten\n"
7015 );
7016 }
7017
7018 #[gpui::test]
7019 fn test_delete(cx: &mut gpui::MutableAppContext) {
7020 let buffer =
7021 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7022 let settings = Settings::test(&cx);
7023 let (_, view) = cx.add_window(Default::default(), |cx| {
7024 build_editor(buffer.clone(), settings, cx)
7025 });
7026
7027 view.update(cx, |view, cx| {
7028 view.select_display_ranges(
7029 &[
7030 // an empty selection - the following character is deleted
7031 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7032 // one character selected - it is deleted
7033 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7034 // a line suffix selected - it is deleted
7035 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7036 ],
7037 cx,
7038 );
7039 view.delete(&Delete, cx);
7040 });
7041
7042 assert_eq!(
7043 buffer.read(cx).read(cx).text(),
7044 "on two three\nfou five six\nseven ten\n"
7045 );
7046 }
7047
7048 #[gpui::test]
7049 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7050 let settings = Settings::test(&cx);
7051 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7052 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7053 view.update(cx, |view, cx| {
7054 view.select_display_ranges(
7055 &[
7056 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7057 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7058 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7059 ],
7060 cx,
7061 );
7062 view.delete_line(&DeleteLine, cx);
7063 assert_eq!(view.display_text(cx), "ghi");
7064 assert_eq!(
7065 view.selected_display_ranges(cx),
7066 vec![
7067 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7068 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7069 ]
7070 );
7071 });
7072
7073 let settings = Settings::test(&cx);
7074 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7075 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7076 view.update(cx, |view, cx| {
7077 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7078 view.delete_line(&DeleteLine, cx);
7079 assert_eq!(view.display_text(cx), "ghi\n");
7080 assert_eq!(
7081 view.selected_display_ranges(cx),
7082 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7083 );
7084 });
7085 }
7086
7087 #[gpui::test]
7088 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7089 let settings = Settings::test(&cx);
7090 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7091 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7092 view.update(cx, |view, cx| {
7093 view.select_display_ranges(
7094 &[
7095 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7096 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7097 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7098 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7099 ],
7100 cx,
7101 );
7102 view.duplicate_line(&DuplicateLine, cx);
7103 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7104 assert_eq!(
7105 view.selected_display_ranges(cx),
7106 vec![
7107 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7108 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7109 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7110 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7111 ]
7112 );
7113 });
7114
7115 let settings = Settings::test(&cx);
7116 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7117 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7118 view.update(cx, |view, cx| {
7119 view.select_display_ranges(
7120 &[
7121 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7122 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7123 ],
7124 cx,
7125 );
7126 view.duplicate_line(&DuplicateLine, cx);
7127 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7128 assert_eq!(
7129 view.selected_display_ranges(cx),
7130 vec![
7131 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7132 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7133 ]
7134 );
7135 });
7136 }
7137
7138 #[gpui::test]
7139 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7140 let settings = Settings::test(&cx);
7141 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7142 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7143 view.update(cx, |view, cx| {
7144 view.fold_ranges(
7145 vec![
7146 Point::new(0, 2)..Point::new(1, 2),
7147 Point::new(2, 3)..Point::new(4, 1),
7148 Point::new(7, 0)..Point::new(8, 4),
7149 ],
7150 cx,
7151 );
7152 view.select_display_ranges(
7153 &[
7154 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7155 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7156 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7157 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7158 ],
7159 cx,
7160 );
7161 assert_eq!(
7162 view.display_text(cx),
7163 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7164 );
7165
7166 view.move_line_up(&MoveLineUp, cx);
7167 assert_eq!(
7168 view.display_text(cx),
7169 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7170 );
7171 assert_eq!(
7172 view.selected_display_ranges(cx),
7173 vec![
7174 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7175 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7176 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7177 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7178 ]
7179 );
7180 });
7181
7182 view.update(cx, |view, cx| {
7183 view.move_line_down(&MoveLineDown, cx);
7184 assert_eq!(
7185 view.display_text(cx),
7186 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7187 );
7188 assert_eq!(
7189 view.selected_display_ranges(cx),
7190 vec![
7191 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7192 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7193 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7194 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7195 ]
7196 );
7197 });
7198
7199 view.update(cx, |view, cx| {
7200 view.move_line_down(&MoveLineDown, cx);
7201 assert_eq!(
7202 view.display_text(cx),
7203 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7204 );
7205 assert_eq!(
7206 view.selected_display_ranges(cx),
7207 vec![
7208 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7209 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7210 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7211 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7212 ]
7213 );
7214 });
7215
7216 view.update(cx, |view, cx| {
7217 view.move_line_up(&MoveLineUp, cx);
7218 assert_eq!(
7219 view.display_text(cx),
7220 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7221 );
7222 assert_eq!(
7223 view.selected_display_ranges(cx),
7224 vec![
7225 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7226 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7227 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7228 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7229 ]
7230 );
7231 });
7232 }
7233
7234 #[gpui::test]
7235 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7236 let settings = Settings::test(&cx);
7237 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7238 let snapshot = buffer.read(cx).snapshot(cx);
7239 let (_, editor) =
7240 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7241 editor.update(cx, |editor, cx| {
7242 editor.insert_blocks(
7243 [BlockProperties {
7244 position: snapshot.anchor_after(Point::new(2, 0)),
7245 disposition: BlockDisposition::Below,
7246 height: 1,
7247 render: Arc::new(|_| Empty::new().boxed()),
7248 }],
7249 cx,
7250 );
7251 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7252 editor.move_line_down(&MoveLineDown, cx);
7253 });
7254 }
7255
7256 #[gpui::test]
7257 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7258 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7259 let settings = Settings::test(&cx);
7260 let view = cx
7261 .add_window(Default::default(), |cx| {
7262 build_editor(buffer.clone(), settings, cx)
7263 })
7264 .1;
7265
7266 // Cut with three selections. Clipboard text is divided into three slices.
7267 view.update(cx, |view, cx| {
7268 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7269 view.cut(&Cut, cx);
7270 assert_eq!(view.display_text(cx), "two four six ");
7271 });
7272
7273 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7274 view.update(cx, |view, cx| {
7275 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7276 view.paste(&Paste, cx);
7277 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7278 assert_eq!(
7279 view.selected_display_ranges(cx),
7280 &[
7281 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7282 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7283 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7284 ]
7285 );
7286 });
7287
7288 // Paste again but with only two cursors. Since the number of cursors doesn't
7289 // match the number of slices in the clipboard, the entire clipboard text
7290 // is pasted at each cursor.
7291 view.update(cx, |view, cx| {
7292 view.select_ranges(vec![0..0, 31..31], None, cx);
7293 view.handle_input(&Input("( ".into()), cx);
7294 view.paste(&Paste, cx);
7295 view.handle_input(&Input(") ".into()), cx);
7296 assert_eq!(
7297 view.display_text(cx),
7298 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7299 );
7300 });
7301
7302 view.update(cx, |view, cx| {
7303 view.select_ranges(vec![0..0], None, cx);
7304 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7305 assert_eq!(
7306 view.display_text(cx),
7307 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7308 );
7309 });
7310
7311 // Cut with three selections, one of which is full-line.
7312 view.update(cx, |view, cx| {
7313 view.select_display_ranges(
7314 &[
7315 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7316 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7317 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7318 ],
7319 cx,
7320 );
7321 view.cut(&Cut, cx);
7322 assert_eq!(
7323 view.display_text(cx),
7324 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7325 );
7326 });
7327
7328 // Paste with three selections, noticing how the copied selection that was full-line
7329 // gets inserted before the second cursor.
7330 view.update(cx, |view, cx| {
7331 view.select_display_ranges(
7332 &[
7333 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7334 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7335 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7336 ],
7337 cx,
7338 );
7339 view.paste(&Paste, cx);
7340 assert_eq!(
7341 view.display_text(cx),
7342 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7343 );
7344 assert_eq!(
7345 view.selected_display_ranges(cx),
7346 &[
7347 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7348 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7349 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7350 ]
7351 );
7352 });
7353
7354 // Copy with a single cursor only, which writes the whole line into the clipboard.
7355 view.update(cx, |view, cx| {
7356 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7357 view.copy(&Copy, cx);
7358 });
7359
7360 // Paste with three selections, noticing how the copied full-line selection is inserted
7361 // before the empty selections but replaces the selection that is non-empty.
7362 view.update(cx, |view, cx| {
7363 view.select_display_ranges(
7364 &[
7365 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7366 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7367 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7368 ],
7369 cx,
7370 );
7371 view.paste(&Paste, cx);
7372 assert_eq!(
7373 view.display_text(cx),
7374 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7375 );
7376 assert_eq!(
7377 view.selected_display_ranges(cx),
7378 &[
7379 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7380 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7381 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7382 ]
7383 );
7384 });
7385 }
7386
7387 #[gpui::test]
7388 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7389 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7390 let settings = Settings::test(&cx);
7391 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7392 view.update(cx, |view, cx| {
7393 view.select_all(&SelectAll, cx);
7394 assert_eq!(
7395 view.selected_display_ranges(cx),
7396 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7397 );
7398 });
7399 }
7400
7401 #[gpui::test]
7402 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7403 let settings = Settings::test(&cx);
7404 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7405 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7406 view.update(cx, |view, cx| {
7407 view.select_display_ranges(
7408 &[
7409 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7410 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7411 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7412 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7413 ],
7414 cx,
7415 );
7416 view.select_line(&SelectLine, cx);
7417 assert_eq!(
7418 view.selected_display_ranges(cx),
7419 vec![
7420 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7421 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7422 ]
7423 );
7424 });
7425
7426 view.update(cx, |view, cx| {
7427 view.select_line(&SelectLine, cx);
7428 assert_eq!(
7429 view.selected_display_ranges(cx),
7430 vec![
7431 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7432 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7433 ]
7434 );
7435 });
7436
7437 view.update(cx, |view, cx| {
7438 view.select_line(&SelectLine, cx);
7439 assert_eq!(
7440 view.selected_display_ranges(cx),
7441 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7442 );
7443 });
7444 }
7445
7446 #[gpui::test]
7447 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7448 let settings = Settings::test(&cx);
7449 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7450 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7451 view.update(cx, |view, cx| {
7452 view.fold_ranges(
7453 vec![
7454 Point::new(0, 2)..Point::new(1, 2),
7455 Point::new(2, 3)..Point::new(4, 1),
7456 Point::new(7, 0)..Point::new(8, 4),
7457 ],
7458 cx,
7459 );
7460 view.select_display_ranges(
7461 &[
7462 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7463 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7464 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7465 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7466 ],
7467 cx,
7468 );
7469 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7470 });
7471
7472 view.update(cx, |view, cx| {
7473 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7474 assert_eq!(
7475 view.display_text(cx),
7476 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7477 );
7478 assert_eq!(
7479 view.selected_display_ranges(cx),
7480 [
7481 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7482 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7483 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7484 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7485 ]
7486 );
7487 });
7488
7489 view.update(cx, |view, cx| {
7490 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7491 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7492 assert_eq!(
7493 view.display_text(cx),
7494 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7495 );
7496 assert_eq!(
7497 view.selected_display_ranges(cx),
7498 [
7499 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7500 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7501 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7502 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7503 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7504 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7505 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7506 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7507 ]
7508 );
7509 });
7510 }
7511
7512 #[gpui::test]
7513 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7514 let settings = Settings::test(&cx);
7515 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7516 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
7517
7518 view.update(cx, |view, cx| {
7519 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7520 });
7521 view.update(cx, |view, cx| {
7522 view.add_selection_above(&AddSelectionAbove, cx);
7523 assert_eq!(
7524 view.selected_display_ranges(cx),
7525 vec![
7526 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7527 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7528 ]
7529 );
7530 });
7531
7532 view.update(cx, |view, cx| {
7533 view.add_selection_above(&AddSelectionAbove, cx);
7534 assert_eq!(
7535 view.selected_display_ranges(cx),
7536 vec![
7537 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7538 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7539 ]
7540 );
7541 });
7542
7543 view.update(cx, |view, cx| {
7544 view.add_selection_below(&AddSelectionBelow, cx);
7545 assert_eq!(
7546 view.selected_display_ranges(cx),
7547 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7548 );
7549 });
7550
7551 view.update(cx, |view, cx| {
7552 view.add_selection_below(&AddSelectionBelow, cx);
7553 assert_eq!(
7554 view.selected_display_ranges(cx),
7555 vec![
7556 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7557 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7558 ]
7559 );
7560 });
7561
7562 view.update(cx, |view, cx| {
7563 view.add_selection_below(&AddSelectionBelow, cx);
7564 assert_eq!(
7565 view.selected_display_ranges(cx),
7566 vec![
7567 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7568 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7569 ]
7570 );
7571 });
7572
7573 view.update(cx, |view, cx| {
7574 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7575 });
7576 view.update(cx, |view, cx| {
7577 view.add_selection_below(&AddSelectionBelow, cx);
7578 assert_eq!(
7579 view.selected_display_ranges(cx),
7580 vec![
7581 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7582 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7583 ]
7584 );
7585 });
7586
7587 view.update(cx, |view, cx| {
7588 view.add_selection_below(&AddSelectionBelow, cx);
7589 assert_eq!(
7590 view.selected_display_ranges(cx),
7591 vec![
7592 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7593 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7594 ]
7595 );
7596 });
7597
7598 view.update(cx, |view, cx| {
7599 view.add_selection_above(&AddSelectionAbove, cx);
7600 assert_eq!(
7601 view.selected_display_ranges(cx),
7602 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7603 );
7604 });
7605
7606 view.update(cx, |view, cx| {
7607 view.add_selection_above(&AddSelectionAbove, cx);
7608 assert_eq!(
7609 view.selected_display_ranges(cx),
7610 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7611 );
7612 });
7613
7614 view.update(cx, |view, cx| {
7615 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7616 view.add_selection_below(&AddSelectionBelow, cx);
7617 assert_eq!(
7618 view.selected_display_ranges(cx),
7619 vec![
7620 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7621 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7622 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7623 ]
7624 );
7625 });
7626
7627 view.update(cx, |view, cx| {
7628 view.add_selection_below(&AddSelectionBelow, cx);
7629 assert_eq!(
7630 view.selected_display_ranges(cx),
7631 vec![
7632 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7633 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7634 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7635 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7636 ]
7637 );
7638 });
7639
7640 view.update(cx, |view, cx| {
7641 view.add_selection_above(&AddSelectionAbove, cx);
7642 assert_eq!(
7643 view.selected_display_ranges(cx),
7644 vec![
7645 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7646 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7647 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7648 ]
7649 );
7650 });
7651
7652 view.update(cx, |view, cx| {
7653 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7654 });
7655 view.update(cx, |view, cx| {
7656 view.add_selection_above(&AddSelectionAbove, cx);
7657 assert_eq!(
7658 view.selected_display_ranges(cx),
7659 vec![
7660 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7661 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7662 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7663 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7664 ]
7665 );
7666 });
7667
7668 view.update(cx, |view, cx| {
7669 view.add_selection_below(&AddSelectionBelow, cx);
7670 assert_eq!(
7671 view.selected_display_ranges(cx),
7672 vec![
7673 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7674 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7675 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7676 ]
7677 );
7678 });
7679 }
7680
7681 #[gpui::test]
7682 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7683 let settings = cx.read(Settings::test);
7684 let language = Arc::new(Language::new(
7685 LanguageConfig::default(),
7686 Some(tree_sitter_rust::language()),
7687 ));
7688
7689 let text = r#"
7690 use mod1::mod2::{mod3, mod4};
7691
7692 fn fn_1(param1: bool, param2: &str) {
7693 let var1 = "text";
7694 }
7695 "#
7696 .unindent();
7697
7698 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7699 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7700 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7701 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7702 .await;
7703
7704 view.update(&mut cx, |view, cx| {
7705 view.select_display_ranges(
7706 &[
7707 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7708 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7709 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7710 ],
7711 cx,
7712 );
7713 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7714 });
7715 assert_eq!(
7716 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7717 &[
7718 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7719 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7720 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7721 ]
7722 );
7723
7724 view.update(&mut cx, |view, cx| {
7725 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7726 });
7727 assert_eq!(
7728 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7729 &[
7730 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7731 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7732 ]
7733 );
7734
7735 view.update(&mut cx, |view, cx| {
7736 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7737 });
7738 assert_eq!(
7739 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7740 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7741 );
7742
7743 // Trying to expand the selected syntax node one more time has no effect.
7744 view.update(&mut cx, |view, cx| {
7745 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7746 });
7747 assert_eq!(
7748 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7749 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7750 );
7751
7752 view.update(&mut cx, |view, cx| {
7753 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7754 });
7755 assert_eq!(
7756 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7757 &[
7758 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7759 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7760 ]
7761 );
7762
7763 view.update(&mut cx, |view, cx| {
7764 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7765 });
7766 assert_eq!(
7767 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7768 &[
7769 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7770 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7771 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7772 ]
7773 );
7774
7775 view.update(&mut cx, |view, cx| {
7776 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7777 });
7778 assert_eq!(
7779 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7780 &[
7781 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7782 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7783 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7784 ]
7785 );
7786
7787 // Trying to shrink the selected syntax node one more time has no effect.
7788 view.update(&mut cx, |view, cx| {
7789 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7790 });
7791 assert_eq!(
7792 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7793 &[
7794 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7795 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7796 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7797 ]
7798 );
7799
7800 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7801 // a fold.
7802 view.update(&mut cx, |view, cx| {
7803 view.fold_ranges(
7804 vec![
7805 Point::new(0, 21)..Point::new(0, 24),
7806 Point::new(3, 20)..Point::new(3, 22),
7807 ],
7808 cx,
7809 );
7810 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7811 });
7812 assert_eq!(
7813 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7814 &[
7815 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7816 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7817 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7818 ]
7819 );
7820 }
7821
7822 #[gpui::test]
7823 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7824 let settings = cx.read(Settings::test);
7825 let language = Arc::new(
7826 Language::new(
7827 LanguageConfig {
7828 brackets: vec![
7829 BracketPair {
7830 start: "{".to_string(),
7831 end: "}".to_string(),
7832 close: false,
7833 newline: true,
7834 },
7835 BracketPair {
7836 start: "(".to_string(),
7837 end: ")".to_string(),
7838 close: false,
7839 newline: true,
7840 },
7841 ],
7842 ..Default::default()
7843 },
7844 Some(tree_sitter_rust::language()),
7845 )
7846 .with_indents_query(
7847 r#"
7848 (_ "(" ")" @end) @indent
7849 (_ "{" "}" @end) @indent
7850 "#,
7851 )
7852 .unwrap(),
7853 );
7854
7855 let text = "fn a() {}";
7856
7857 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7858 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7859 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7860 editor
7861 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7862 .await;
7863
7864 editor.update(&mut cx, |editor, cx| {
7865 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7866 editor.newline(&Newline, cx);
7867 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7868 assert_eq!(
7869 editor.selected_ranges(cx),
7870 &[
7871 Point::new(1, 4)..Point::new(1, 4),
7872 Point::new(3, 4)..Point::new(3, 4),
7873 Point::new(5, 0)..Point::new(5, 0)
7874 ]
7875 );
7876 });
7877 }
7878
7879 #[gpui::test]
7880 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7881 let settings = cx.read(Settings::test);
7882 let language = Arc::new(Language::new(
7883 LanguageConfig {
7884 brackets: vec![
7885 BracketPair {
7886 start: "{".to_string(),
7887 end: "}".to_string(),
7888 close: true,
7889 newline: true,
7890 },
7891 BracketPair {
7892 start: "/*".to_string(),
7893 end: " */".to_string(),
7894 close: true,
7895 newline: true,
7896 },
7897 ],
7898 ..Default::default()
7899 },
7900 Some(tree_sitter_rust::language()),
7901 ));
7902
7903 let text = r#"
7904 a
7905
7906 /
7907
7908 "#
7909 .unindent();
7910
7911 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7912 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7913 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7914 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7915 .await;
7916
7917 view.update(&mut cx, |view, cx| {
7918 view.select_display_ranges(
7919 &[
7920 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7921 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7922 ],
7923 cx,
7924 );
7925 view.handle_input(&Input("{".to_string()), cx);
7926 view.handle_input(&Input("{".to_string()), cx);
7927 view.handle_input(&Input("{".to_string()), cx);
7928 assert_eq!(
7929 view.text(cx),
7930 "
7931 {{{}}}
7932 {{{}}}
7933 /
7934
7935 "
7936 .unindent()
7937 );
7938
7939 view.move_right(&MoveRight, cx);
7940 view.handle_input(&Input("}".to_string()), cx);
7941 view.handle_input(&Input("}".to_string()), cx);
7942 view.handle_input(&Input("}".to_string()), cx);
7943 assert_eq!(
7944 view.text(cx),
7945 "
7946 {{{}}}}
7947 {{{}}}}
7948 /
7949
7950 "
7951 .unindent()
7952 );
7953
7954 view.undo(&Undo, cx);
7955 view.handle_input(&Input("/".to_string()), cx);
7956 view.handle_input(&Input("*".to_string()), cx);
7957 assert_eq!(
7958 view.text(cx),
7959 "
7960 /* */
7961 /* */
7962 /
7963
7964 "
7965 .unindent()
7966 );
7967
7968 view.undo(&Undo, cx);
7969 view.select_display_ranges(
7970 &[
7971 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7972 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7973 ],
7974 cx,
7975 );
7976 view.handle_input(&Input("*".to_string()), cx);
7977 assert_eq!(
7978 view.text(cx),
7979 "
7980 a
7981
7982 /*
7983 *
7984 "
7985 .unindent()
7986 );
7987 });
7988 }
7989
7990 #[gpui::test]
7991 async fn test_snippets(mut cx: gpui::TestAppContext) {
7992 let settings = cx.read(Settings::test);
7993
7994 let text = "
7995 a. b
7996 a. b
7997 a. b
7998 "
7999 .unindent();
8000 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8001 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8002
8003 editor.update(&mut cx, |editor, cx| {
8004 let buffer = &editor.snapshot(cx).buffer_snapshot;
8005 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8006 let insertion_ranges = [
8007 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8008 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8009 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8010 ];
8011
8012 editor
8013 .insert_snippet(&insertion_ranges, snippet, cx)
8014 .unwrap();
8015 assert_eq!(
8016 editor.text(cx),
8017 "
8018 a.f(one, two, three) b
8019 a.f(one, two, three) b
8020 a.f(one, two, three) b
8021 "
8022 .unindent()
8023 );
8024 assert_eq!(
8025 editor.selected_ranges::<Point>(cx),
8026 &[
8027 Point::new(0, 4)..Point::new(0, 7),
8028 Point::new(0, 14)..Point::new(0, 19),
8029 Point::new(1, 4)..Point::new(1, 7),
8030 Point::new(1, 14)..Point::new(1, 19),
8031 Point::new(2, 4)..Point::new(2, 7),
8032 Point::new(2, 14)..Point::new(2, 19),
8033 ]
8034 );
8035
8036 // Can't move earlier than the first tab stop
8037 editor.move_to_prev_snippet_tabstop(cx);
8038 assert_eq!(
8039 editor.selected_ranges::<Point>(cx),
8040 &[
8041 Point::new(0, 4)..Point::new(0, 7),
8042 Point::new(0, 14)..Point::new(0, 19),
8043 Point::new(1, 4)..Point::new(1, 7),
8044 Point::new(1, 14)..Point::new(1, 19),
8045 Point::new(2, 4)..Point::new(2, 7),
8046 Point::new(2, 14)..Point::new(2, 19),
8047 ]
8048 );
8049
8050 assert!(editor.move_to_next_snippet_tabstop(cx));
8051 assert_eq!(
8052 editor.selected_ranges::<Point>(cx),
8053 &[
8054 Point::new(0, 9)..Point::new(0, 12),
8055 Point::new(1, 9)..Point::new(1, 12),
8056 Point::new(2, 9)..Point::new(2, 12)
8057 ]
8058 );
8059
8060 editor.move_to_prev_snippet_tabstop(cx);
8061 assert_eq!(
8062 editor.selected_ranges::<Point>(cx),
8063 &[
8064 Point::new(0, 4)..Point::new(0, 7),
8065 Point::new(0, 14)..Point::new(0, 19),
8066 Point::new(1, 4)..Point::new(1, 7),
8067 Point::new(1, 14)..Point::new(1, 19),
8068 Point::new(2, 4)..Point::new(2, 7),
8069 Point::new(2, 14)..Point::new(2, 19),
8070 ]
8071 );
8072
8073 assert!(editor.move_to_next_snippet_tabstop(cx));
8074 assert!(editor.move_to_next_snippet_tabstop(cx));
8075 assert_eq!(
8076 editor.selected_ranges::<Point>(cx),
8077 &[
8078 Point::new(0, 20)..Point::new(0, 20),
8079 Point::new(1, 20)..Point::new(1, 20),
8080 Point::new(2, 20)..Point::new(2, 20)
8081 ]
8082 );
8083
8084 // As soon as the last tab stop is reached, snippet state is gone
8085 editor.move_to_prev_snippet_tabstop(cx);
8086 assert_eq!(
8087 editor.selected_ranges::<Point>(cx),
8088 &[
8089 Point::new(0, 20)..Point::new(0, 20),
8090 Point::new(1, 20)..Point::new(1, 20),
8091 Point::new(2, 20)..Point::new(2, 20)
8092 ]
8093 );
8094 });
8095 }
8096
8097 #[gpui::test]
8098 async fn test_completion(mut cx: gpui::TestAppContext) {
8099 let settings = cx.read(Settings::test);
8100 let (language_server, mut fake) = cx.update(|cx| {
8101 lsp::LanguageServer::fake_with_capabilities(
8102 lsp::ServerCapabilities {
8103 completion_provider: Some(lsp::CompletionOptions {
8104 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8105 ..Default::default()
8106 }),
8107 ..Default::default()
8108 },
8109 cx,
8110 )
8111 });
8112
8113 let text = "
8114 one
8115 two
8116 three
8117 "
8118 .unindent();
8119
8120 let fs = FakeFs::new(cx.background().clone());
8121 fs.insert_file("/file", text).await;
8122
8123 let project = Project::test(fs, &mut cx);
8124
8125 let (worktree, relative_path) = project
8126 .update(&mut cx, |project, cx| {
8127 project.find_or_create_local_worktree("/file", false, cx)
8128 })
8129 .await
8130 .unwrap();
8131 let project_path = ProjectPath {
8132 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
8133 path: relative_path.into(),
8134 };
8135 let buffer = project
8136 .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))
8137 .await
8138 .unwrap();
8139 buffer.update(&mut cx, |buffer, cx| {
8140 buffer.set_language_server(Some(language_server), cx);
8141 });
8142
8143 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8144 buffer.next_notification(&cx).await;
8145
8146 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8147
8148 editor.update(&mut cx, |editor, cx| {
8149 editor.project = Some(project);
8150 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8151 editor.handle_input(&Input(".".to_string()), cx);
8152 });
8153
8154 handle_completion_request(
8155 &mut fake,
8156 "/file",
8157 Point::new(0, 4),
8158 vec![
8159 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8160 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8161 ],
8162 )
8163 .await;
8164 editor
8165 .condition(&cx, |editor, _| editor.context_menu_visible())
8166 .await;
8167
8168 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8169 editor.move_down(&MoveDown, cx);
8170 let apply_additional_edits = editor
8171 .confirm_completion(&ConfirmCompletion(None), cx)
8172 .unwrap();
8173 assert_eq!(
8174 editor.text(cx),
8175 "
8176 one.second_completion
8177 two
8178 three
8179 "
8180 .unindent()
8181 );
8182 apply_additional_edits
8183 });
8184
8185 handle_resolve_completion_request(
8186 &mut fake,
8187 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8188 )
8189 .await;
8190 apply_additional_edits.await.unwrap();
8191 assert_eq!(
8192 editor.read_with(&cx, |editor, cx| editor.text(cx)),
8193 "
8194 one.second_completion
8195 two
8196 three
8197 additional edit
8198 "
8199 .unindent()
8200 );
8201
8202 editor.update(&mut cx, |editor, cx| {
8203 editor.select_ranges(
8204 [
8205 Point::new(1, 3)..Point::new(1, 3),
8206 Point::new(2, 5)..Point::new(2, 5),
8207 ],
8208 None,
8209 cx,
8210 );
8211
8212 editor.handle_input(&Input(" ".to_string()), cx);
8213 assert!(editor.context_menu.is_none());
8214 editor.handle_input(&Input("s".to_string()), cx);
8215 assert!(editor.context_menu.is_none());
8216 });
8217
8218 handle_completion_request(
8219 &mut fake,
8220 "/file",
8221 Point::new(2, 7),
8222 vec![
8223 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8224 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8225 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8226 ],
8227 )
8228 .await;
8229 editor
8230 .condition(&cx, |editor, _| editor.context_menu_visible())
8231 .await;
8232
8233 editor.update(&mut cx, |editor, cx| {
8234 editor.handle_input(&Input("i".to_string()), cx);
8235 });
8236
8237 handle_completion_request(
8238 &mut fake,
8239 "/file",
8240 Point::new(2, 8),
8241 vec![
8242 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8243 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8244 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8245 ],
8246 )
8247 .await;
8248 editor
8249 .condition(&cx, |editor, _| editor.context_menu_visible())
8250 .await;
8251
8252 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
8253 let apply_additional_edits = editor
8254 .confirm_completion(&ConfirmCompletion(None), cx)
8255 .unwrap();
8256 assert_eq!(
8257 editor.text(cx),
8258 "
8259 one.second_completion
8260 two sixth_completion
8261 three sixth_completion
8262 additional edit
8263 "
8264 .unindent()
8265 );
8266 apply_additional_edits
8267 });
8268 handle_resolve_completion_request(&mut fake, None).await;
8269 apply_additional_edits.await.unwrap();
8270
8271 async fn handle_completion_request(
8272 fake: &mut FakeLanguageServer,
8273 path: &'static str,
8274 position: Point,
8275 completions: Vec<(Range<Point>, &'static str)>,
8276 ) {
8277 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8278 assert_eq!(
8279 params.text_document_position.text_document.uri,
8280 lsp::Url::from_file_path(path).unwrap()
8281 );
8282 assert_eq!(
8283 params.text_document_position.position,
8284 lsp::Position::new(position.row, position.column)
8285 );
8286 Some(lsp::CompletionResponse::Array(
8287 completions
8288 .iter()
8289 .map(|(range, new_text)| lsp::CompletionItem {
8290 label: new_text.to_string(),
8291 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8292 range: lsp::Range::new(
8293 lsp::Position::new(range.start.row, range.start.column),
8294 lsp::Position::new(range.start.row, range.start.column),
8295 ),
8296 new_text: new_text.to_string(),
8297 })),
8298 ..Default::default()
8299 })
8300 .collect(),
8301 ))
8302 })
8303 .next()
8304 .await;
8305 }
8306
8307 async fn handle_resolve_completion_request(
8308 fake: &mut FakeLanguageServer,
8309 edit: Option<(Range<Point>, &'static str)>,
8310 ) {
8311 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8312 lsp::CompletionItem {
8313 additional_text_edits: edit.clone().map(|(range, new_text)| {
8314 vec![lsp::TextEdit::new(
8315 lsp::Range::new(
8316 lsp::Position::new(range.start.row, range.start.column),
8317 lsp::Position::new(range.end.row, range.end.column),
8318 ),
8319 new_text.to_string(),
8320 )]
8321 }),
8322 ..Default::default()
8323 }
8324 })
8325 .next()
8326 .await;
8327 }
8328 }
8329
8330 #[gpui::test]
8331 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
8332 let settings = cx.read(Settings::test);
8333 let language = Arc::new(Language::new(
8334 LanguageConfig {
8335 line_comment: Some("// ".to_string()),
8336 ..Default::default()
8337 },
8338 Some(tree_sitter_rust::language()),
8339 ));
8340
8341 let text = "
8342 fn a() {
8343 //b();
8344 // c();
8345 // d();
8346 }
8347 "
8348 .unindent();
8349
8350 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8351 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8352 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8353
8354 view.update(&mut cx, |editor, cx| {
8355 // If multiple selections intersect a line, the line is only
8356 // toggled once.
8357 editor.select_display_ranges(
8358 &[
8359 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8360 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8361 ],
8362 cx,
8363 );
8364 editor.toggle_comments(&ToggleComments, cx);
8365 assert_eq!(
8366 editor.text(cx),
8367 "
8368 fn a() {
8369 b();
8370 c();
8371 d();
8372 }
8373 "
8374 .unindent()
8375 );
8376
8377 // The comment prefix is inserted at the same column for every line
8378 // in a selection.
8379 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8380 editor.toggle_comments(&ToggleComments, cx);
8381 assert_eq!(
8382 editor.text(cx),
8383 "
8384 fn a() {
8385 // b();
8386 // c();
8387 // d();
8388 }
8389 "
8390 .unindent()
8391 );
8392
8393 // If a selection ends at the beginning of a line, that line is not toggled.
8394 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8395 editor.toggle_comments(&ToggleComments, cx);
8396 assert_eq!(
8397 editor.text(cx),
8398 "
8399 fn a() {
8400 // b();
8401 c();
8402 // d();
8403 }
8404 "
8405 .unindent()
8406 );
8407 });
8408 }
8409
8410 #[gpui::test]
8411 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8412 let settings = Settings::test(cx);
8413 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8414 let multibuffer = cx.add_model(|cx| {
8415 let mut multibuffer = MultiBuffer::new(0);
8416 multibuffer.push_excerpts(
8417 buffer.clone(),
8418 [
8419 Point::new(0, 0)..Point::new(0, 4),
8420 Point::new(1, 0)..Point::new(1, 4),
8421 ],
8422 cx,
8423 );
8424 multibuffer
8425 });
8426
8427 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8428
8429 let (_, view) = cx.add_window(Default::default(), |cx| {
8430 build_editor(multibuffer, settings, cx)
8431 });
8432 view.update(cx, |view, cx| {
8433 assert_eq!(view.text(cx), "aaaa\nbbbb");
8434 view.select_ranges(
8435 [
8436 Point::new(0, 0)..Point::new(0, 0),
8437 Point::new(1, 0)..Point::new(1, 0),
8438 ],
8439 None,
8440 cx,
8441 );
8442
8443 view.handle_input(&Input("X".to_string()), cx);
8444 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8445 assert_eq!(
8446 view.selected_ranges(cx),
8447 [
8448 Point::new(0, 1)..Point::new(0, 1),
8449 Point::new(1, 1)..Point::new(1, 1),
8450 ]
8451 )
8452 });
8453 }
8454
8455 #[gpui::test]
8456 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8457 let settings = Settings::test(cx);
8458 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8459 let multibuffer = cx.add_model(|cx| {
8460 let mut multibuffer = MultiBuffer::new(0);
8461 multibuffer.push_excerpts(
8462 buffer,
8463 [
8464 Point::new(0, 0)..Point::new(1, 4),
8465 Point::new(1, 0)..Point::new(2, 4),
8466 ],
8467 cx,
8468 );
8469 multibuffer
8470 });
8471
8472 assert_eq!(
8473 multibuffer.read(cx).read(cx).text(),
8474 "aaaa\nbbbb\nbbbb\ncccc"
8475 );
8476
8477 let (_, view) = cx.add_window(Default::default(), |cx| {
8478 build_editor(multibuffer, settings, cx)
8479 });
8480 view.update(cx, |view, cx| {
8481 view.select_ranges(
8482 [
8483 Point::new(1, 1)..Point::new(1, 1),
8484 Point::new(2, 3)..Point::new(2, 3),
8485 ],
8486 None,
8487 cx,
8488 );
8489
8490 view.handle_input(&Input("X".to_string()), cx);
8491 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8492 assert_eq!(
8493 view.selected_ranges(cx),
8494 [
8495 Point::new(1, 2)..Point::new(1, 2),
8496 Point::new(2, 5)..Point::new(2, 5),
8497 ]
8498 );
8499
8500 view.newline(&Newline, cx);
8501 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8502 assert_eq!(
8503 view.selected_ranges(cx),
8504 [
8505 Point::new(2, 0)..Point::new(2, 0),
8506 Point::new(6, 0)..Point::new(6, 0),
8507 ]
8508 );
8509 });
8510 }
8511
8512 #[gpui::test]
8513 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8514 let settings = Settings::test(cx);
8515 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8516 let mut excerpt1_id = None;
8517 let multibuffer = cx.add_model(|cx| {
8518 let mut multibuffer = MultiBuffer::new(0);
8519 excerpt1_id = multibuffer
8520 .push_excerpts(
8521 buffer.clone(),
8522 [
8523 Point::new(0, 0)..Point::new(1, 4),
8524 Point::new(1, 0)..Point::new(2, 4),
8525 ],
8526 cx,
8527 )
8528 .into_iter()
8529 .next();
8530 multibuffer
8531 });
8532 assert_eq!(
8533 multibuffer.read(cx).read(cx).text(),
8534 "aaaa\nbbbb\nbbbb\ncccc"
8535 );
8536 let (_, editor) = cx.add_window(Default::default(), |cx| {
8537 let mut editor = build_editor(multibuffer.clone(), settings, cx);
8538 editor.select_ranges(
8539 [
8540 Point::new(1, 3)..Point::new(1, 3),
8541 Point::new(2, 1)..Point::new(2, 1),
8542 ],
8543 None,
8544 cx,
8545 );
8546 editor
8547 });
8548
8549 // Refreshing selections is a no-op when excerpts haven't changed.
8550 editor.update(cx, |editor, cx| {
8551 editor.refresh_selections(cx);
8552 assert_eq!(
8553 editor.selected_ranges(cx),
8554 [
8555 Point::new(1, 3)..Point::new(1, 3),
8556 Point::new(2, 1)..Point::new(2, 1),
8557 ]
8558 );
8559 });
8560
8561 multibuffer.update(cx, |multibuffer, cx| {
8562 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8563 });
8564 editor.update(cx, |editor, cx| {
8565 // Removing an excerpt causes the first selection to become degenerate.
8566 assert_eq!(
8567 editor.selected_ranges(cx),
8568 [
8569 Point::new(0, 0)..Point::new(0, 0),
8570 Point::new(0, 1)..Point::new(0, 1)
8571 ]
8572 );
8573
8574 // Refreshing selections will relocate the first selection to the original buffer
8575 // location.
8576 editor.refresh_selections(cx);
8577 assert_eq!(
8578 editor.selected_ranges(cx),
8579 [
8580 Point::new(0, 1)..Point::new(0, 1),
8581 Point::new(0, 3)..Point::new(0, 3)
8582 ]
8583 );
8584 });
8585 }
8586
8587 #[gpui::test]
8588 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8589 let settings = cx.read(Settings::test);
8590 let language = Arc::new(Language::new(
8591 LanguageConfig {
8592 brackets: vec![
8593 BracketPair {
8594 start: "{".to_string(),
8595 end: "}".to_string(),
8596 close: true,
8597 newline: true,
8598 },
8599 BracketPair {
8600 start: "/* ".to_string(),
8601 end: " */".to_string(),
8602 close: true,
8603 newline: true,
8604 },
8605 ],
8606 ..Default::default()
8607 },
8608 Some(tree_sitter_rust::language()),
8609 ));
8610
8611 let text = concat!(
8612 "{ }\n", // Suppress rustfmt
8613 " x\n", //
8614 " /* */\n", //
8615 "x\n", //
8616 "{{} }\n", //
8617 );
8618
8619 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8620 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8621 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8622 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8623 .await;
8624
8625 view.update(&mut cx, |view, cx| {
8626 view.select_display_ranges(
8627 &[
8628 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8629 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8630 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8631 ],
8632 cx,
8633 );
8634 view.newline(&Newline, cx);
8635
8636 assert_eq!(
8637 view.buffer().read(cx).read(cx).text(),
8638 concat!(
8639 "{ \n", // Suppress rustfmt
8640 "\n", //
8641 "}\n", //
8642 " x\n", //
8643 " /* \n", //
8644 " \n", //
8645 " */\n", //
8646 "x\n", //
8647 "{{} \n", //
8648 "}\n", //
8649 )
8650 );
8651 });
8652 }
8653
8654 #[gpui::test]
8655 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8656 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8657 let settings = Settings::test(&cx);
8658 let (_, editor) = cx.add_window(Default::default(), |cx| {
8659 build_editor(buffer.clone(), settings, cx)
8660 });
8661
8662 editor.update(cx, |editor, cx| {
8663 struct Type1;
8664 struct Type2;
8665
8666 let buffer = buffer.read(cx).snapshot(cx);
8667
8668 let anchor_range = |range: Range<Point>| {
8669 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8670 };
8671
8672 editor.highlight_ranges::<Type1>(
8673 vec![
8674 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8675 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8676 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8677 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8678 ],
8679 Color::red(),
8680 cx,
8681 );
8682 editor.highlight_ranges::<Type2>(
8683 vec![
8684 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8685 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8686 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8687 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8688 ],
8689 Color::green(),
8690 cx,
8691 );
8692
8693 let snapshot = editor.snapshot(cx);
8694 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8695 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8696 &snapshot,
8697 );
8698 // Enforce a consistent ordering based on color without relying on the ordering of the
8699 // highlight's `TypeId` which is non-deterministic.
8700 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8701 assert_eq!(
8702 highlighted_ranges,
8703 &[
8704 (
8705 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8706 Color::green(),
8707 ),
8708 (
8709 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8710 Color::green(),
8711 ),
8712 (
8713 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8714 Color::red(),
8715 ),
8716 (
8717 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8718 Color::red(),
8719 ),
8720 ]
8721 );
8722 assert_eq!(
8723 editor.highlighted_ranges_in_range(
8724 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8725 &snapshot,
8726 ),
8727 &[(
8728 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8729 Color::red(),
8730 )]
8731 );
8732 });
8733 }
8734
8735 #[test]
8736 fn test_combine_syntax_and_fuzzy_match_highlights() {
8737 let string = "abcdefghijklmnop";
8738 let default = HighlightStyle::default();
8739 let syntax_ranges = [
8740 (
8741 0..3,
8742 HighlightStyle {
8743 color: Color::red(),
8744 ..default
8745 },
8746 ),
8747 (
8748 4..8,
8749 HighlightStyle {
8750 color: Color::green(),
8751 ..default
8752 },
8753 ),
8754 ];
8755 let match_indices = [4, 6, 7, 8];
8756 assert_eq!(
8757 combine_syntax_and_fuzzy_match_highlights(
8758 &string,
8759 default,
8760 syntax_ranges.into_iter(),
8761 &match_indices,
8762 ),
8763 &[
8764 (
8765 0..3,
8766 HighlightStyle {
8767 color: Color::red(),
8768 ..default
8769 },
8770 ),
8771 (
8772 4..5,
8773 HighlightStyle {
8774 color: Color::green(),
8775 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8776 ..default
8777 },
8778 ),
8779 (
8780 5..6,
8781 HighlightStyle {
8782 color: Color::green(),
8783 ..default
8784 },
8785 ),
8786 (
8787 6..8,
8788 HighlightStyle {
8789 color: Color::green(),
8790 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8791 ..default
8792 },
8793 ),
8794 (
8795 8..9,
8796 HighlightStyle {
8797 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8798 ..default
8799 },
8800 ),
8801 ]
8802 );
8803 }
8804
8805 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8806 let point = DisplayPoint::new(row as u32, column as u32);
8807 point..point
8808 }
8809
8810 fn build_editor(
8811 buffer: ModelHandle<MultiBuffer>,
8812 settings: Settings,
8813 cx: &mut ViewContext<Editor>,
8814 ) -> Editor {
8815 let settings = watch::channel_with(settings);
8816 Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
8817 }
8818}
8819
8820trait RangeExt<T> {
8821 fn sorted(&self) -> Range<T>;
8822 fn to_inclusive(&self) -> RangeInclusive<T>;
8823}
8824
8825impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8826 fn sorted(&self) -> Self {
8827 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8828 }
8829
8830 fn to_inclusive(&self) -> RangeInclusive<T> {
8831 self.start.clone()..=self.end.clone()
8832 }
8833}