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 itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(UnfoldLines);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext) {
145 cx.add_bindings(vec![
146 Binding::new("escape", Cancel, Some("Editor")),
147 Binding::new("backspace", Backspace, Some("Editor")),
148 Binding::new("ctrl-h", Backspace, Some("Editor")),
149 Binding::new("delete", Delete, Some("Editor")),
150 Binding::new("ctrl-d", Delete, Some("Editor")),
151 Binding::new("enter", Newline, Some("Editor && mode == full")),
152 Binding::new(
153 "alt-enter",
154 Input("\n".into()),
155 Some("Editor && mode == auto_height"),
156 ),
157 Binding::new(
158 "enter",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new(
163 "enter",
164 ConfirmCodeAction(None),
165 Some("Editor && showing_code_actions"),
166 ),
167 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
168 Binding::new("tab", Tab, Some("Editor")),
169 Binding::new(
170 "tab",
171 ConfirmCompletion(None),
172 Some("Editor && showing_completions"),
173 ),
174 Binding::new("shift-tab", Outdent, Some("Editor")),
175 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
176 Binding::new(
177 "alt-backspace",
178 DeleteToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
187 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
188 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
189 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
190 Binding::new("cmd-x", Cut, Some("Editor")),
191 Binding::new("cmd-c", Copy, Some("Editor")),
192 Binding::new("cmd-v", Paste, Some("Editor")),
193 Binding::new("cmd-z", Undo, Some("Editor")),
194 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
195 Binding::new("up", MoveUp, Some("Editor")),
196 Binding::new("down", MoveDown, Some("Editor")),
197 Binding::new("left", MoveLeft, Some("Editor")),
198 Binding::new("right", MoveRight, Some("Editor")),
199 Binding::new("ctrl-p", MoveUp, Some("Editor")),
200 Binding::new("ctrl-n", MoveDown, Some("Editor")),
201 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
202 Binding::new("ctrl-f", MoveRight, Some("Editor")),
203 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
207 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
208 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
211 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
212 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
213 Binding::new("shift-up", SelectUp, Some("Editor")),
214 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
215 Binding::new("shift-down", SelectDown, Some("Editor")),
216 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
217 Binding::new("shift-left", SelectLeft, Some("Editor")),
218 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
219 Binding::new("shift-right", SelectRight, Some("Editor")),
220 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
221 Binding::new(
222 "alt-shift-left",
223 SelectToPreviousWordBoundary,
224 Some("Editor"),
225 ),
226 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
227 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new(
230 "cmd-shift-left",
231 SelectToBeginningOfLine(true),
232 Some("Editor"),
233 ),
234 Binding::new(
235 "ctrl-shift-A",
236 SelectToBeginningOfLine(true),
237 Some("Editor"),
238 ),
239 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
240 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
242 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
243 Binding::new("cmd-a", SelectAll, Some("Editor")),
244 Binding::new("cmd-l", SelectLine, Some("Editor")),
245 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
246 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
247 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
249 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
251 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
252 Binding::new("cmd-/", ToggleComments, Some("Editor")),
253 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
254 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
258 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
259 Binding::new("f2", Rename, Some("Editor")),
260 Binding::new("f12", GoToDefinition, Some("Editor")),
261 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
262 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
263 Binding::new("pageup", PageUp, Some("Editor")),
264 Binding::new("pagedown", PageDown, Some("Editor")),
265 Binding::new("alt-cmd-[", Fold, Some("Editor")),
266 Binding::new("alt-cmd-]", UnfoldLines, Some("Editor")),
267 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
268 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
269 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
270 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
271 ]);
272
273 cx.add_action(Editor::open_new);
274 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
275 cx.add_action(Editor::select);
276 cx.add_action(Editor::cancel);
277 cx.add_action(Editor::handle_input);
278 cx.add_action(Editor::newline);
279 cx.add_action(Editor::backspace);
280 cx.add_action(Editor::delete);
281 cx.add_action(Editor::tab);
282 cx.add_action(Editor::outdent);
283 cx.add_action(Editor::delete_line);
284 cx.add_action(Editor::delete_to_previous_word_start);
285 cx.add_action(Editor::delete_to_next_word_end);
286 cx.add_action(Editor::delete_to_beginning_of_line);
287 cx.add_action(Editor::delete_to_end_of_line);
288 cx.add_action(Editor::cut_to_end_of_line);
289 cx.add_action(Editor::duplicate_line);
290 cx.add_action(Editor::move_line_up);
291 cx.add_action(Editor::move_line_down);
292 cx.add_action(Editor::cut);
293 cx.add_action(Editor::copy);
294 cx.add_action(Editor::paste);
295 cx.add_action(Editor::undo);
296 cx.add_action(Editor::redo);
297 cx.add_action(Editor::move_up);
298 cx.add_action(Editor::move_down);
299 cx.add_action(Editor::move_left);
300 cx.add_action(Editor::move_right);
301 cx.add_action(Editor::move_to_previous_word_start);
302 cx.add_action(Editor::move_to_next_word_end);
303 cx.add_action(Editor::move_to_beginning_of_line);
304 cx.add_action(Editor::move_to_end_of_line);
305 cx.add_action(Editor::move_to_beginning);
306 cx.add_action(Editor::move_to_end);
307 cx.add_action(Editor::select_up);
308 cx.add_action(Editor::select_down);
309 cx.add_action(Editor::select_left);
310 cx.add_action(Editor::select_right);
311 cx.add_action(Editor::select_to_previous_word_start);
312 cx.add_action(Editor::select_to_next_word_end);
313 cx.add_action(Editor::select_to_beginning_of_line);
314 cx.add_action(Editor::select_to_end_of_line);
315 cx.add_action(Editor::select_to_beginning);
316 cx.add_action(Editor::select_to_end);
317 cx.add_action(Editor::select_all);
318 cx.add_action(Editor::select_line);
319 cx.add_action(Editor::split_selection_into_lines);
320 cx.add_action(Editor::add_selection_above);
321 cx.add_action(Editor::add_selection_below);
322 cx.add_action(Editor::select_next);
323 cx.add_action(Editor::toggle_comments);
324 cx.add_action(Editor::select_larger_syntax_node);
325 cx.add_action(Editor::select_smaller_syntax_node);
326 cx.add_action(Editor::move_to_enclosing_bracket);
327 cx.add_action(Editor::go_to_diagnostic);
328 cx.add_action(Editor::go_to_definition);
329 cx.add_action(Editor::page_up);
330 cx.add_action(Editor::page_down);
331 cx.add_action(Editor::fold);
332 cx.add_action(Editor::unfold_lines);
333 cx.add_action(Editor::fold_selected_ranges);
334 cx.add_action(Editor::show_completions);
335 cx.add_action(Editor::toggle_code_actions);
336 cx.add_action(Editor::open_excerpts);
337 cx.add_async_action(Editor::confirm_completion);
338 cx.add_async_action(Editor::confirm_code_action);
339 cx.add_async_action(Editor::rename);
340 cx.add_async_action(Editor::confirm_rename);
341 cx.add_async_action(Editor::find_all_references);
342
343 workspace::register_project_item::<Editor>(cx);
344 workspace::register_followable_item::<Editor>(cx);
345}
346
347trait InvalidationRegion {
348 fn ranges(&self) -> &[Range<Anchor>];
349}
350
351#[derive(Clone, Debug)]
352pub enum SelectPhase {
353 Begin {
354 position: DisplayPoint,
355 add: bool,
356 click_count: usize,
357 },
358 BeginColumnar {
359 position: DisplayPoint,
360 overshoot: u32,
361 },
362 Extend {
363 position: DisplayPoint,
364 click_count: usize,
365 },
366 Update {
367 position: DisplayPoint,
368 overshoot: u32,
369 scroll_position: Vector2F,
370 },
371 End,
372}
373
374#[derive(Clone, Debug)]
375pub enum SelectMode {
376 Character,
377 Word(Range<Anchor>),
378 Line(Range<Anchor>),
379 All,
380}
381
382#[derive(PartialEq, Eq)]
383pub enum Autoscroll {
384 Fit,
385 Center,
386 Newest,
387}
388
389#[derive(Copy, Clone, PartialEq, Eq)]
390pub enum EditorMode {
391 SingleLine,
392 AutoHeight { max_lines: usize },
393 Full,
394}
395
396#[derive(Clone)]
397pub enum SoftWrap {
398 None,
399 EditorWidth,
400 Column(u32),
401}
402
403#[derive(Clone)]
404pub struct EditorStyle {
405 pub text: TextStyle,
406 pub placeholder_text: Option<TextStyle>,
407 pub theme: theme::Editor,
408}
409
410type CompletionId = usize;
411
412pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
413
414type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
415
416pub struct Editor {
417 handle: WeakViewHandle<Self>,
418 buffer: ModelHandle<MultiBuffer>,
419 display_map: ModelHandle<DisplayMap>,
420 next_selection_id: usize,
421 selections: Arc<[Selection<Anchor>]>,
422 pending_selection: Option<PendingSelection>,
423 columnar_selection_tail: Option<Anchor>,
424 add_selections_state: Option<AddSelectionsState>,
425 select_next_state: Option<SelectNextState>,
426 selection_history:
427 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
428 autoclose_stack: InvalidationStack<BracketPairState>,
429 snippet_stack: InvalidationStack<SnippetState>,
430 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
431 active_diagnostics: Option<ActiveDiagnosticGroup>,
432 scroll_position: Vector2F,
433 scroll_top_anchor: Anchor,
434 autoscroll_request: Option<(Autoscroll, bool)>,
435 soft_wrap_mode_override: Option<settings::SoftWrap>,
436 get_field_editor_theme: Option<GetFieldEditorTheme>,
437 override_text_style: Option<Box<OverrideTextStyle>>,
438 project: Option<ModelHandle<Project>>,
439 focused: bool,
440 show_local_cursors: bool,
441 show_local_selections: bool,
442 blink_epoch: usize,
443 blinking_paused: bool,
444 mode: EditorMode,
445 vertical_scroll_margin: f32,
446 placeholder_text: Option<Arc<str>>,
447 highlighted_rows: Option<Range<u32>>,
448 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
449 nav_history: Option<ItemNavHistory>,
450 context_menu: Option<ContextMenu>,
451 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
452 next_completion_id: CompletionId,
453 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
454 code_actions_task: Option<Task<()>>,
455 document_highlights_task: Option<Task<()>>,
456 pending_rename: Option<RenameState>,
457 searchable: bool,
458 cursor_shape: CursorShape,
459 leader_replica_id: Option<u16>,
460}
461
462pub struct EditorSnapshot {
463 pub mode: EditorMode,
464 pub display_snapshot: DisplaySnapshot,
465 pub placeholder_text: Option<Arc<str>>,
466 is_focused: bool,
467 scroll_position: Vector2F,
468 scroll_top_anchor: Anchor,
469}
470
471#[derive(Clone)]
472pub struct PendingSelection {
473 selection: Selection<Anchor>,
474 mode: SelectMode,
475}
476
477struct AddSelectionsState {
478 above: bool,
479 stack: Vec<usize>,
480}
481
482struct SelectNextState {
483 query: AhoCorasick,
484 wordwise: bool,
485 done: bool,
486}
487
488struct BracketPairState {
489 ranges: Vec<Range<Anchor>>,
490 pair: BracketPair,
491}
492
493struct SnippetState {
494 ranges: Vec<Vec<Range<Anchor>>>,
495 active_index: usize,
496}
497
498pub struct RenameState {
499 pub range: Range<Anchor>,
500 pub old_name: String,
501 pub editor: ViewHandle<Editor>,
502 block_id: BlockId,
503}
504
505struct InvalidationStack<T>(Vec<T>);
506
507enum ContextMenu {
508 Completions(CompletionsMenu),
509 CodeActions(CodeActionsMenu),
510}
511
512impl ContextMenu {
513 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
514 if self.visible() {
515 match self {
516 ContextMenu::Completions(menu) => menu.select_prev(cx),
517 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
518 }
519 true
520 } else {
521 false
522 }
523 }
524
525 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
526 if self.visible() {
527 match self {
528 ContextMenu::Completions(menu) => menu.select_next(cx),
529 ContextMenu::CodeActions(menu) => menu.select_next(cx),
530 }
531 true
532 } else {
533 false
534 }
535 }
536
537 fn visible(&self) -> bool {
538 match self {
539 ContextMenu::Completions(menu) => menu.visible(),
540 ContextMenu::CodeActions(menu) => menu.visible(),
541 }
542 }
543
544 fn render(
545 &self,
546 cursor_position: DisplayPoint,
547 style: EditorStyle,
548 cx: &AppContext,
549 ) -> (DisplayPoint, ElementBox) {
550 match self {
551 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
552 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
553 }
554 }
555}
556
557struct CompletionsMenu {
558 id: CompletionId,
559 initial_position: Anchor,
560 buffer: ModelHandle<Buffer>,
561 completions: Arc<[Completion]>,
562 match_candidates: Vec<StringMatchCandidate>,
563 matches: Arc<[StringMatch]>,
564 selected_item: usize,
565 list: UniformListState,
566}
567
568impl CompletionsMenu {
569 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
570 if self.selected_item > 0 {
571 self.selected_item -= 1;
572 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
573 }
574 cx.notify();
575 }
576
577 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
578 if self.selected_item + 1 < self.matches.len() {
579 self.selected_item += 1;
580 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
581 }
582 cx.notify();
583 }
584
585 fn visible(&self) -> bool {
586 !self.matches.is_empty()
587 }
588
589 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
590 enum CompletionTag {}
591
592 let completions = self.completions.clone();
593 let matches = self.matches.clone();
594 let selected_item = self.selected_item;
595 let container_style = style.autocomplete.container;
596 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
597 let start_ix = range.start;
598 for (ix, mat) in matches[range].iter().enumerate() {
599 let completion = &completions[mat.candidate_id];
600 let item_ix = start_ix + ix;
601 items.push(
602 MouseEventHandler::new::<CompletionTag, _, _>(
603 mat.candidate_id,
604 cx,
605 |state, _| {
606 let item_style = if item_ix == selected_item {
607 style.autocomplete.selected_item
608 } else if state.hovered {
609 style.autocomplete.hovered_item
610 } else {
611 style.autocomplete.item
612 };
613
614 Text::new(completion.label.text.clone(), style.text.clone())
615 .with_soft_wrap(false)
616 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
617 &completion.label.text,
618 style.text.color.into(),
619 styled_runs_for_code_label(&completion.label, &style.syntax),
620 &mat.positions,
621 ))
622 .contained()
623 .with_style(item_style)
624 .boxed()
625 },
626 )
627 .with_cursor_style(CursorStyle::PointingHand)
628 .on_mouse_down(move |cx| {
629 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
630 })
631 .boxed(),
632 );
633 }
634 })
635 .with_width_from_item(
636 self.matches
637 .iter()
638 .enumerate()
639 .max_by_key(|(_, mat)| {
640 self.completions[mat.candidate_id]
641 .label
642 .text
643 .chars()
644 .count()
645 })
646 .map(|(ix, _)| ix),
647 )
648 .contained()
649 .with_style(container_style)
650 .boxed()
651 }
652
653 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
654 let mut matches = if let Some(query) = query {
655 fuzzy::match_strings(
656 &self.match_candidates,
657 query,
658 false,
659 100,
660 &Default::default(),
661 executor,
662 )
663 .await
664 } else {
665 self.match_candidates
666 .iter()
667 .enumerate()
668 .map(|(candidate_id, candidate)| StringMatch {
669 candidate_id,
670 score: Default::default(),
671 positions: Default::default(),
672 string: candidate.string.clone(),
673 })
674 .collect()
675 };
676 matches.sort_unstable_by_key(|mat| {
677 (
678 Reverse(OrderedFloat(mat.score)),
679 self.completions[mat.candidate_id].sort_key(),
680 )
681 });
682
683 for mat in &mut matches {
684 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
685 for position in &mut mat.positions {
686 *position += filter_start;
687 }
688 }
689
690 self.matches = matches.into();
691 }
692}
693
694#[derive(Clone)]
695struct CodeActionsMenu {
696 actions: Arc<[CodeAction]>,
697 buffer: ModelHandle<Buffer>,
698 selected_item: usize,
699 list: UniformListState,
700 deployed_from_indicator: bool,
701}
702
703impl CodeActionsMenu {
704 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
705 if self.selected_item > 0 {
706 self.selected_item -= 1;
707 cx.notify()
708 }
709 }
710
711 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
712 if self.selected_item + 1 < self.actions.len() {
713 self.selected_item += 1;
714 cx.notify()
715 }
716 }
717
718 fn visible(&self) -> bool {
719 !self.actions.is_empty()
720 }
721
722 fn render(
723 &self,
724 mut cursor_position: DisplayPoint,
725 style: EditorStyle,
726 ) -> (DisplayPoint, ElementBox) {
727 enum ActionTag {}
728
729 let container_style = style.autocomplete.container;
730 let actions = self.actions.clone();
731 let selected_item = self.selected_item;
732 let element =
733 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
734 let start_ix = range.start;
735 for (ix, action) in actions[range].iter().enumerate() {
736 let item_ix = start_ix + ix;
737 items.push(
738 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
739 let item_style = if item_ix == selected_item {
740 style.autocomplete.selected_item
741 } else if state.hovered {
742 style.autocomplete.hovered_item
743 } else {
744 style.autocomplete.item
745 };
746
747 Text::new(action.lsp_action.title.clone(), style.text.clone())
748 .with_soft_wrap(false)
749 .contained()
750 .with_style(item_style)
751 .boxed()
752 })
753 .with_cursor_style(CursorStyle::PointingHand)
754 .on_mouse_down(move |cx| {
755 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
756 })
757 .boxed(),
758 );
759 }
760 })
761 .with_width_from_item(
762 self.actions
763 .iter()
764 .enumerate()
765 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
766 .map(|(ix, _)| ix),
767 )
768 .contained()
769 .with_style(container_style)
770 .boxed();
771
772 if self.deployed_from_indicator {
773 *cursor_position.column_mut() = 0;
774 }
775
776 (cursor_position, element)
777 }
778}
779
780#[derive(Debug)]
781struct ActiveDiagnosticGroup {
782 primary_range: Range<Anchor>,
783 primary_message: String,
784 blocks: HashMap<BlockId, Diagnostic>,
785 is_valid: bool,
786}
787
788#[derive(Serialize, Deserialize)]
789struct ClipboardSelection {
790 len: usize,
791 is_entire_line: bool,
792}
793
794pub struct NavigationData {
795 anchor: Anchor,
796 offset: usize,
797}
798
799pub struct EditorCreated(pub ViewHandle<Editor>);
800
801impl Editor {
802 pub fn single_line(
803 field_editor_style: Option<GetFieldEditorTheme>,
804 cx: &mut ViewContext<Self>,
805 ) -> Self {
806 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
807 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
808 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
809 }
810
811 pub fn auto_height(
812 max_lines: usize,
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 field_editor_style,
823 cx,
824 )
825 }
826
827 pub fn for_buffer(
828 buffer: ModelHandle<Buffer>,
829 project: Option<ModelHandle<Project>>,
830 cx: &mut ViewContext<Self>,
831 ) -> Self {
832 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
833 Self::new(EditorMode::Full, buffer, project, None, cx)
834 }
835
836 pub fn for_multibuffer(
837 buffer: ModelHandle<MultiBuffer>,
838 project: Option<ModelHandle<Project>>,
839 cx: &mut ViewContext<Self>,
840 ) -> Self {
841 Self::new(EditorMode::Full, buffer, project, None, cx)
842 }
843
844 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
845 let mut clone = Self::new(
846 self.mode,
847 self.buffer.clone(),
848 self.project.clone(),
849 self.get_field_editor_theme,
850 cx,
851 );
852 clone.scroll_position = self.scroll_position;
853 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
854 clone.searchable = self.searchable;
855 clone
856 }
857
858 fn new(
859 mode: EditorMode,
860 buffer: ModelHandle<MultiBuffer>,
861 project: Option<ModelHandle<Project>>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = cx.global::<Settings>();
867 let style = build_style(&*settings, get_field_editor_theme, None, cx);
868 DisplayMap::new(
869 buffer.clone(),
870 settings.tab_size,
871 style.text.font_id,
872 style.text.font_size,
873 None,
874 2,
875 1,
876 cx,
877 )
878 });
879 cx.observe(&buffer, Self::on_buffer_changed).detach();
880 cx.subscribe(&buffer, Self::on_buffer_event).detach();
881 cx.observe(&display_map, Self::on_display_map_changed)
882 .detach();
883
884 let mut this = Self {
885 handle: cx.weak_handle(),
886 buffer,
887 display_map,
888 selections: Arc::from([]),
889 pending_selection: Some(PendingSelection {
890 selection: Selection {
891 id: 0,
892 start: Anchor::min(),
893 end: Anchor::min(),
894 reversed: false,
895 goal: SelectionGoal::None,
896 },
897 mode: SelectMode::Character,
898 }),
899 columnar_selection_tail: None,
900 next_selection_id: 1,
901 add_selections_state: None,
902 select_next_state: None,
903 selection_history: Default::default(),
904 autoclose_stack: Default::default(),
905 snippet_stack: Default::default(),
906 select_larger_syntax_node_stack: Vec::new(),
907 active_diagnostics: None,
908 soft_wrap_mode_override: None,
909 get_field_editor_theme,
910 project,
911 scroll_position: Vector2F::zero(),
912 scroll_top_anchor: Anchor::min(),
913 autoscroll_request: None,
914 focused: false,
915 show_local_cursors: false,
916 show_local_selections: true,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 background_highlights: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 override_text_style: None,
934 cursor_shape: Default::default(),
935 leader_replica_id: None,
936 };
937 this.end_selection(cx);
938
939 let editor_created_event = EditorCreated(cx.handle());
940 cx.emit_global(editor_created_event);
941
942 this
943 }
944
945 pub fn open_new(
946 workspace: &mut Workspace,
947 _: &workspace::OpenNew,
948 cx: &mut ViewContext<Workspace>,
949 ) {
950 let project = workspace.project().clone();
951 if project.read(cx).is_remote() {
952 cx.propagate_action();
953 } else if let Some(buffer) = project
954 .update(cx, |project, cx| project.create_buffer(cx))
955 .log_err()
956 {
957 workspace.add_item(
958 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
959 cx,
960 );
961 }
962 }
963
964 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
965 self.buffer.read(cx).replica_id()
966 }
967
968 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
969 &self.buffer
970 }
971
972 pub fn title(&self, cx: &AppContext) -> String {
973 self.buffer().read(cx).title(cx)
974 }
975
976 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
977 EditorSnapshot {
978 mode: self.mode,
979 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
980 scroll_position: self.scroll_position,
981 scroll_top_anchor: self.scroll_top_anchor.clone(),
982 placeholder_text: self.placeholder_text.clone(),
983 is_focused: self
984 .handle
985 .upgrade(cx)
986 .map_or(false, |handle| handle.is_focused(cx)),
987 }
988 }
989
990 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
991 self.buffer.read(cx).language(cx)
992 }
993
994 fn style(&self, cx: &AppContext) -> EditorStyle {
995 build_style(
996 cx.global::<Settings>(),
997 self.get_field_editor_theme,
998 self.override_text_style.as_deref(),
999 cx,
1000 )
1001 }
1002
1003 pub fn set_placeholder_text(
1004 &mut self,
1005 placeholder_text: impl Into<Arc<str>>,
1006 cx: &mut ViewContext<Self>,
1007 ) {
1008 self.placeholder_text = Some(placeholder_text.into());
1009 cx.notify();
1010 }
1011
1012 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1013 self.vertical_scroll_margin = margin_rows as f32;
1014 cx.notify();
1015 }
1016
1017 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1018 self.set_scroll_position_internal(scroll_position, true, cx);
1019 }
1020
1021 fn set_scroll_position_internal(
1022 &mut self,
1023 scroll_position: Vector2F,
1024 local: bool,
1025 cx: &mut ViewContext<Self>,
1026 ) {
1027 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1028
1029 if scroll_position.y() == 0. {
1030 self.scroll_top_anchor = Anchor::min();
1031 self.scroll_position = scroll_position;
1032 } else {
1033 let scroll_top_buffer_offset =
1034 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1035 let anchor = map
1036 .buffer_snapshot
1037 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1038 self.scroll_position = vec2f(
1039 scroll_position.x(),
1040 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1041 );
1042 self.scroll_top_anchor = anchor;
1043 }
1044
1045 cx.emit(Event::ScrollPositionChanged { local });
1046 cx.notify();
1047 }
1048
1049 fn set_scroll_top_anchor(
1050 &mut self,
1051 anchor: Anchor,
1052 position: Vector2F,
1053 cx: &mut ViewContext<Self>,
1054 ) {
1055 self.scroll_top_anchor = anchor;
1056 self.scroll_position = position;
1057 cx.emit(Event::ScrollPositionChanged { local: false });
1058 cx.notify();
1059 }
1060
1061 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1062 self.cursor_shape = cursor_shape;
1063 cx.notify();
1064 }
1065
1066 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1067 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1068 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1069 }
1070
1071 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1072 if max < self.scroll_position.x() {
1073 self.scroll_position.set_x(max);
1074 true
1075 } else {
1076 false
1077 }
1078 }
1079
1080 pub fn autoscroll_vertically(
1081 &mut self,
1082 viewport_height: f32,
1083 line_height: f32,
1084 cx: &mut ViewContext<Self>,
1085 ) -> bool {
1086 let visible_lines = viewport_height / line_height;
1087 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1088 let mut scroll_position =
1089 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1090 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1091 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1092 } else {
1093 display_map.max_point().row().saturating_sub(1) as f32
1094 };
1095 if scroll_position.y() > max_scroll_top {
1096 scroll_position.set_y(max_scroll_top);
1097 self.set_scroll_position(scroll_position, cx);
1098 }
1099
1100 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1101 autoscroll
1102 } else {
1103 return false;
1104 };
1105
1106 let first_cursor_top;
1107 let last_cursor_bottom;
1108 if let Some(highlighted_rows) = &self.highlighted_rows {
1109 first_cursor_top = highlighted_rows.start as f32;
1110 last_cursor_bottom = first_cursor_top + 1.;
1111 } else if autoscroll == Autoscroll::Newest {
1112 let newest_selection =
1113 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1114 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1115 last_cursor_bottom = first_cursor_top + 1.;
1116 } else {
1117 let selections = self.local_selections::<Point>(cx);
1118 first_cursor_top = selections
1119 .first()
1120 .unwrap()
1121 .head()
1122 .to_display_point(&display_map)
1123 .row() as f32;
1124 last_cursor_bottom = selections
1125 .last()
1126 .unwrap()
1127 .head()
1128 .to_display_point(&display_map)
1129 .row() as f32
1130 + 1.0;
1131 }
1132
1133 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1134 0.
1135 } else {
1136 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1137 };
1138 if margin < 0.0 {
1139 return false;
1140 }
1141
1142 match autoscroll {
1143 Autoscroll::Fit | Autoscroll::Newest => {
1144 let margin = margin.min(self.vertical_scroll_margin);
1145 let target_top = (first_cursor_top - margin).max(0.0);
1146 let target_bottom = last_cursor_bottom + margin;
1147 let start_row = scroll_position.y();
1148 let end_row = start_row + visible_lines;
1149
1150 if target_top < start_row {
1151 scroll_position.set_y(target_top);
1152 self.set_scroll_position_internal(scroll_position, local, cx);
1153 } else if target_bottom >= end_row {
1154 scroll_position.set_y(target_bottom - visible_lines);
1155 self.set_scroll_position_internal(scroll_position, local, cx);
1156 }
1157 }
1158 Autoscroll::Center => {
1159 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1160 self.set_scroll_position_internal(scroll_position, local, cx);
1161 }
1162 }
1163
1164 true
1165 }
1166
1167 pub fn autoscroll_horizontally(
1168 &mut self,
1169 start_row: u32,
1170 viewport_width: f32,
1171 scroll_width: f32,
1172 max_glyph_width: f32,
1173 layouts: &[text_layout::Line],
1174 cx: &mut ViewContext<Self>,
1175 ) -> bool {
1176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1177 let selections = self.local_selections::<Point>(cx);
1178
1179 let mut target_left;
1180 let mut target_right;
1181
1182 if self.highlighted_rows.is_some() {
1183 target_left = 0.0_f32;
1184 target_right = 0.0_f32;
1185 } else {
1186 target_left = std::f32::INFINITY;
1187 target_right = 0.0_f32;
1188 for selection in selections {
1189 let head = selection.head().to_display_point(&display_map);
1190 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1191 let start_column = head.column().saturating_sub(3);
1192 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1193 target_left = target_left.min(
1194 layouts[(head.row() - start_row) as usize]
1195 .x_for_index(start_column as usize),
1196 );
1197 target_right = target_right.max(
1198 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1199 + max_glyph_width,
1200 );
1201 }
1202 }
1203 }
1204
1205 target_right = target_right.min(scroll_width);
1206
1207 if target_right - target_left > viewport_width {
1208 return false;
1209 }
1210
1211 let scroll_left = self.scroll_position.x() * max_glyph_width;
1212 let scroll_right = scroll_left + viewport_width;
1213
1214 if target_left < scroll_left {
1215 self.scroll_position.set_x(target_left / max_glyph_width);
1216 true
1217 } else if target_right > scroll_right {
1218 self.scroll_position
1219 .set_x((target_right - viewport_width) / max_glyph_width);
1220 true
1221 } else {
1222 false
1223 }
1224 }
1225
1226 pub fn move_selections(
1227 &mut self,
1228 cx: &mut ViewContext<Self>,
1229 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1230 ) {
1231 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1232 let selections = self
1233 .local_selections::<Point>(cx)
1234 .into_iter()
1235 .map(|selection| {
1236 let mut selection = Selection {
1237 id: selection.id,
1238 start: selection.start.to_display_point(&display_map),
1239 end: selection.end.to_display_point(&display_map),
1240 reversed: selection.reversed,
1241 goal: selection.goal,
1242 };
1243 move_selection(&display_map, &mut selection);
1244 Selection {
1245 id: selection.id,
1246 start: selection.start.to_point(&display_map),
1247 end: selection.end.to_point(&display_map),
1248 reversed: selection.reversed,
1249 goal: selection.goal,
1250 }
1251 })
1252 .collect();
1253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1254 }
1255
1256 pub fn move_selection_heads(
1257 &mut self,
1258 cx: &mut ViewContext<Self>,
1259 update_head: impl Fn(
1260 &DisplaySnapshot,
1261 DisplayPoint,
1262 SelectionGoal,
1263 ) -> (DisplayPoint, SelectionGoal),
1264 ) {
1265 self.move_selections(cx, |map, selection| {
1266 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1267 selection.set_head(new_head, new_goal);
1268 });
1269 }
1270
1271 pub fn move_cursors(
1272 &mut self,
1273 cx: &mut ViewContext<Self>,
1274 update_cursor_position: impl Fn(
1275 &DisplaySnapshot,
1276 DisplayPoint,
1277 SelectionGoal,
1278 ) -> (DisplayPoint, SelectionGoal),
1279 ) {
1280 self.move_selections(cx, |map, selection| {
1281 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1282 selection.collapse_to(cursor, new_goal)
1283 });
1284 }
1285
1286 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1287 self.hide_context_menu(cx);
1288
1289 match phase {
1290 SelectPhase::Begin {
1291 position,
1292 add,
1293 click_count,
1294 } => self.begin_selection(*position, *add, *click_count, cx),
1295 SelectPhase::BeginColumnar {
1296 position,
1297 overshoot,
1298 } => self.begin_columnar_selection(*position, *overshoot, cx),
1299 SelectPhase::Extend {
1300 position,
1301 click_count,
1302 } => self.extend_selection(*position, *click_count, cx),
1303 SelectPhase::Update {
1304 position,
1305 overshoot,
1306 scroll_position,
1307 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1308 SelectPhase::End => self.end_selection(cx),
1309 }
1310 }
1311
1312 fn extend_selection(
1313 &mut self,
1314 position: DisplayPoint,
1315 click_count: usize,
1316 cx: &mut ViewContext<Self>,
1317 ) {
1318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1319 let tail = self
1320 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1321 .tail();
1322 self.begin_selection(position, false, click_count, cx);
1323
1324 let position = position.to_offset(&display_map, Bias::Left);
1325 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1326 let mut pending = self.pending_selection.clone().unwrap();
1327
1328 if position >= tail {
1329 pending.selection.start = tail_anchor.clone();
1330 } else {
1331 pending.selection.end = tail_anchor.clone();
1332 pending.selection.reversed = true;
1333 }
1334
1335 match &mut pending.mode {
1336 SelectMode::Word(range) | SelectMode::Line(range) => {
1337 *range = tail_anchor.clone()..tail_anchor
1338 }
1339 _ => {}
1340 }
1341
1342 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1343 }
1344
1345 fn begin_selection(
1346 &mut self,
1347 position: DisplayPoint,
1348 add: bool,
1349 click_count: usize,
1350 cx: &mut ViewContext<Self>,
1351 ) {
1352 if !self.focused {
1353 cx.focus_self();
1354 cx.emit(Event::Activate);
1355 }
1356
1357 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1358 let buffer = &display_map.buffer_snapshot;
1359 let newest_selection = self.newest_anchor_selection().clone();
1360
1361 let start;
1362 let end;
1363 let mode;
1364 match click_count {
1365 1 => {
1366 start = buffer.anchor_before(position.to_point(&display_map));
1367 end = start.clone();
1368 mode = SelectMode::Character;
1369 }
1370 2 => {
1371 let range = movement::surrounding_word(&display_map, position);
1372 start = buffer.anchor_before(range.start.to_point(&display_map));
1373 end = buffer.anchor_before(range.end.to_point(&display_map));
1374 mode = SelectMode::Word(start.clone()..end.clone());
1375 }
1376 3 => {
1377 let position = display_map
1378 .clip_point(position, Bias::Left)
1379 .to_point(&display_map);
1380 let line_start = display_map.prev_line_boundary(position).0;
1381 let next_line_start = buffer.clip_point(
1382 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1383 Bias::Left,
1384 );
1385 start = buffer.anchor_before(line_start);
1386 end = buffer.anchor_before(next_line_start);
1387 mode = SelectMode::Line(start.clone()..end.clone());
1388 }
1389 _ => {
1390 start = buffer.anchor_before(0);
1391 end = buffer.anchor_before(buffer.len());
1392 mode = SelectMode::All;
1393 }
1394 }
1395
1396 let selection = Selection {
1397 id: post_inc(&mut self.next_selection_id),
1398 start,
1399 end,
1400 reversed: false,
1401 goal: SelectionGoal::None,
1402 };
1403
1404 let mut selections;
1405 if add {
1406 selections = self.selections.clone();
1407 // Remove the newest selection if it was added due to a previous mouse up
1408 // within this multi-click.
1409 if click_count > 1 {
1410 selections = self
1411 .selections
1412 .iter()
1413 .filter(|selection| selection.id != newest_selection.id)
1414 .cloned()
1415 .collect();
1416 }
1417 } else {
1418 selections = Arc::from([]);
1419 }
1420 self.set_selections(
1421 selections,
1422 Some(PendingSelection { selection, mode }),
1423 true,
1424 cx,
1425 );
1426
1427 cx.notify();
1428 }
1429
1430 fn begin_columnar_selection(
1431 &mut self,
1432 position: DisplayPoint,
1433 overshoot: u32,
1434 cx: &mut ViewContext<Self>,
1435 ) {
1436 if !self.focused {
1437 cx.focus_self();
1438 cx.emit(Event::Activate);
1439 }
1440
1441 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1442 let tail = self
1443 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1444 .tail();
1445 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1446
1447 self.select_columns(
1448 tail.to_display_point(&display_map),
1449 position,
1450 overshoot,
1451 &display_map,
1452 cx,
1453 );
1454 }
1455
1456 fn update_selection(
1457 &mut self,
1458 position: DisplayPoint,
1459 overshoot: u32,
1460 scroll_position: Vector2F,
1461 cx: &mut ViewContext<Self>,
1462 ) {
1463 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1464
1465 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1466 let tail = tail.to_display_point(&display_map);
1467 self.select_columns(tail, position, overshoot, &display_map, cx);
1468 } else if let Some(mut pending) = self.pending_selection.clone() {
1469 let buffer = self.buffer.read(cx).snapshot(cx);
1470 let head;
1471 let tail;
1472 match &pending.mode {
1473 SelectMode::Character => {
1474 head = position.to_point(&display_map);
1475 tail = pending.selection.tail().to_point(&buffer);
1476 }
1477 SelectMode::Word(original_range) => {
1478 let original_display_range = original_range.start.to_display_point(&display_map)
1479 ..original_range.end.to_display_point(&display_map);
1480 let original_buffer_range = original_display_range.start.to_point(&display_map)
1481 ..original_display_range.end.to_point(&display_map);
1482 if movement::is_inside_word(&display_map, position)
1483 || original_display_range.contains(&position)
1484 {
1485 let word_range = movement::surrounding_word(&display_map, position);
1486 if word_range.start < original_display_range.start {
1487 head = word_range.start.to_point(&display_map);
1488 } else {
1489 head = word_range.end.to_point(&display_map);
1490 }
1491 } else {
1492 head = position.to_point(&display_map);
1493 }
1494
1495 if head <= original_buffer_range.start {
1496 tail = original_buffer_range.end;
1497 } else {
1498 tail = original_buffer_range.start;
1499 }
1500 }
1501 SelectMode::Line(original_range) => {
1502 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1503
1504 let position = display_map
1505 .clip_point(position, Bias::Left)
1506 .to_point(&display_map);
1507 let line_start = display_map.prev_line_boundary(position).0;
1508 let next_line_start = buffer.clip_point(
1509 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1510 Bias::Left,
1511 );
1512
1513 if line_start < original_range.start {
1514 head = line_start
1515 } else {
1516 head = next_line_start
1517 }
1518
1519 if head <= original_range.start {
1520 tail = original_range.end;
1521 } else {
1522 tail = original_range.start;
1523 }
1524 }
1525 SelectMode::All => {
1526 return;
1527 }
1528 };
1529
1530 if head < tail {
1531 pending.selection.start = buffer.anchor_before(head);
1532 pending.selection.end = buffer.anchor_before(tail);
1533 pending.selection.reversed = true;
1534 } else {
1535 pending.selection.start = buffer.anchor_before(tail);
1536 pending.selection.end = buffer.anchor_before(head);
1537 pending.selection.reversed = false;
1538 }
1539 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1540 } else {
1541 log::error!("update_selection dispatched with no pending selection");
1542 return;
1543 }
1544
1545 self.set_scroll_position(scroll_position, cx);
1546 cx.notify();
1547 }
1548
1549 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1550 self.columnar_selection_tail.take();
1551 if self.pending_selection.is_some() {
1552 let selections = self.local_selections::<usize>(cx);
1553 self.update_selections(selections, None, cx);
1554 }
1555 }
1556
1557 fn select_columns(
1558 &mut self,
1559 tail: DisplayPoint,
1560 head: DisplayPoint,
1561 overshoot: u32,
1562 display_map: &DisplaySnapshot,
1563 cx: &mut ViewContext<Self>,
1564 ) {
1565 let start_row = cmp::min(tail.row(), head.row());
1566 let end_row = cmp::max(tail.row(), head.row());
1567 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1568 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1569 let reversed = start_column < tail.column();
1570
1571 let selections = (start_row..=end_row)
1572 .filter_map(|row| {
1573 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1574 let start = display_map
1575 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1576 .to_point(&display_map);
1577 let end = display_map
1578 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1579 .to_point(&display_map);
1580 Some(Selection {
1581 id: post_inc(&mut self.next_selection_id),
1582 start,
1583 end,
1584 reversed,
1585 goal: SelectionGoal::None,
1586 })
1587 } else {
1588 None
1589 }
1590 })
1591 .collect::<Vec<_>>();
1592
1593 self.update_selections(selections, None, cx);
1594 cx.notify();
1595 }
1596
1597 pub fn is_selecting(&self) -> bool {
1598 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1599 }
1600
1601 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1602 if self.take_rename(false, cx).is_some() {
1603 return;
1604 }
1605
1606 if self.hide_context_menu(cx).is_some() {
1607 return;
1608 }
1609
1610 if self.snippet_stack.pop().is_some() {
1611 return;
1612 }
1613
1614 if self.mode != EditorMode::Full {
1615 cx.propagate_action();
1616 return;
1617 }
1618
1619 if self.active_diagnostics.is_some() {
1620 self.dismiss_diagnostics(cx);
1621 } else if let Some(pending) = self.pending_selection.clone() {
1622 let mut selections = self.selections.clone();
1623 if selections.is_empty() {
1624 selections = Arc::from([pending.selection]);
1625 }
1626 self.set_selections(selections, None, true, cx);
1627 self.request_autoscroll(Autoscroll::Fit, cx);
1628 } else {
1629 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1630 if self.selection_count() == 1 {
1631 if oldest_selection.is_empty() {
1632 cx.propagate_action();
1633 return;
1634 }
1635
1636 oldest_selection.start = oldest_selection.head().clone();
1637 oldest_selection.end = oldest_selection.head().clone();
1638 }
1639 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1640 }
1641 }
1642
1643 #[cfg(any(test, feature = "test-support"))]
1644 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1645 &self,
1646 cx: &AppContext,
1647 ) -> Vec<Range<D>> {
1648 self.local_selections::<D>(cx)
1649 .iter()
1650 .map(|s| {
1651 if s.reversed {
1652 s.end.clone()..s.start.clone()
1653 } else {
1654 s.start.clone()..s.end.clone()
1655 }
1656 })
1657 .collect()
1658 }
1659
1660 #[cfg(any(test, feature = "test-support"))]
1661 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1662 let display_map = self
1663 .display_map
1664 .update(cx, |display_map, cx| display_map.snapshot(cx));
1665 self.selections
1666 .iter()
1667 .chain(
1668 self.pending_selection
1669 .as_ref()
1670 .map(|pending| &pending.selection),
1671 )
1672 .map(|s| {
1673 if s.reversed {
1674 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1675 } else {
1676 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1677 }
1678 })
1679 .collect()
1680 }
1681
1682 pub fn select_ranges<I, T>(
1683 &mut self,
1684 ranges: I,
1685 autoscroll: Option<Autoscroll>,
1686 cx: &mut ViewContext<Self>,
1687 ) where
1688 I: IntoIterator<Item = Range<T>>,
1689 T: ToOffset,
1690 {
1691 let buffer = self.buffer.read(cx).snapshot(cx);
1692 let selections = ranges
1693 .into_iter()
1694 .map(|range| {
1695 let mut start = range.start.to_offset(&buffer);
1696 let mut end = range.end.to_offset(&buffer);
1697 let reversed = if start > end {
1698 mem::swap(&mut start, &mut end);
1699 true
1700 } else {
1701 false
1702 };
1703 Selection {
1704 id: post_inc(&mut self.next_selection_id),
1705 start,
1706 end,
1707 reversed,
1708 goal: SelectionGoal::None,
1709 }
1710 })
1711 .collect::<Vec<_>>();
1712 self.update_selections(selections, autoscroll, cx);
1713 }
1714
1715 #[cfg(any(test, feature = "test-support"))]
1716 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1717 where
1718 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1719 {
1720 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1721 let selections = ranges
1722 .into_iter()
1723 .map(|range| {
1724 let mut start = range.start;
1725 let mut end = range.end;
1726 let reversed = if start > end {
1727 mem::swap(&mut start, &mut end);
1728 true
1729 } else {
1730 false
1731 };
1732 Selection {
1733 id: post_inc(&mut self.next_selection_id),
1734 start: start.to_point(&display_map),
1735 end: end.to_point(&display_map),
1736 reversed,
1737 goal: SelectionGoal::None,
1738 }
1739 })
1740 .collect();
1741 self.update_selections(selections, None, cx);
1742 }
1743
1744 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1745 let text = action.0.as_ref();
1746 if !self.skip_autoclose_end(text, cx) {
1747 self.transact(cx, |this, cx| {
1748 if !this.surround_with_bracket_pair(text, cx) {
1749 this.insert(text, cx);
1750 this.autoclose_bracket_pairs(cx);
1751 }
1752 });
1753 self.trigger_completion_on_input(text, cx);
1754 }
1755 }
1756
1757 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1758 self.transact(cx, |this, cx| {
1759 let mut old_selections = SmallVec::<[_; 32]>::new();
1760 {
1761 let selections = this.local_selections::<usize>(cx);
1762 let buffer = this.buffer.read(cx).snapshot(cx);
1763 for selection in selections.iter() {
1764 let start_point = selection.start.to_point(&buffer);
1765 let indent = buffer
1766 .indent_column_for_line(start_point.row)
1767 .min(start_point.column);
1768 let start = selection.start;
1769 let end = selection.end;
1770
1771 let mut insert_extra_newline = false;
1772 if let Some(language) = buffer.language() {
1773 let leading_whitespace_len = buffer
1774 .reversed_chars_at(start)
1775 .take_while(|c| c.is_whitespace() && *c != '\n')
1776 .map(|c| c.len_utf8())
1777 .sum::<usize>();
1778
1779 let trailing_whitespace_len = buffer
1780 .chars_at(end)
1781 .take_while(|c| c.is_whitespace() && *c != '\n')
1782 .map(|c| c.len_utf8())
1783 .sum::<usize>();
1784
1785 insert_extra_newline = language.brackets().iter().any(|pair| {
1786 let pair_start = pair.start.trim_end();
1787 let pair_end = pair.end.trim_start();
1788
1789 pair.newline
1790 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1791 && buffer.contains_str_at(
1792 (start - leading_whitespace_len)
1793 .saturating_sub(pair_start.len()),
1794 pair_start,
1795 )
1796 });
1797 }
1798
1799 old_selections.push((
1800 selection.id,
1801 buffer.anchor_after(end),
1802 start..end,
1803 indent,
1804 insert_extra_newline,
1805 ));
1806 }
1807 }
1808
1809 this.buffer.update(cx, |buffer, cx| {
1810 let mut delta = 0_isize;
1811 let mut pending_edit: Option<PendingEdit> = None;
1812 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1813 if pending_edit.as_ref().map_or(false, |pending| {
1814 pending.indent != *indent
1815 || pending.insert_extra_newline != *insert_extra_newline
1816 }) {
1817 let pending = pending_edit.take().unwrap();
1818 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1819 new_text.push('\n');
1820 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1821 if pending.insert_extra_newline {
1822 new_text = new_text.repeat(2);
1823 }
1824 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1825 delta += pending.delta;
1826 }
1827
1828 let start = (range.start as isize + delta) as usize;
1829 let end = (range.end as isize + delta) as usize;
1830 let mut text_len = *indent as usize + 1;
1831 if *insert_extra_newline {
1832 text_len *= 2;
1833 }
1834
1835 let pending = pending_edit.get_or_insert_with(Default::default);
1836 pending.delta += text_len as isize - (end - start) as isize;
1837 pending.indent = *indent;
1838 pending.insert_extra_newline = *insert_extra_newline;
1839 pending.ranges.push(start..end);
1840 }
1841
1842 let pending = pending_edit.unwrap();
1843 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1844 new_text.push('\n');
1845 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1846 if pending.insert_extra_newline {
1847 new_text = new_text.repeat(2);
1848 }
1849 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1850
1851 let buffer = buffer.read(cx);
1852 this.selections = this
1853 .selections
1854 .iter()
1855 .cloned()
1856 .zip(old_selections)
1857 .map(
1858 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1859 let mut cursor = end_anchor.to_point(&buffer);
1860 if insert_extra_newline {
1861 cursor.row -= 1;
1862 cursor.column = buffer.line_len(cursor.row);
1863 }
1864 let anchor = buffer.anchor_after(cursor);
1865 new_selection.start = anchor.clone();
1866 new_selection.end = anchor;
1867 new_selection
1868 },
1869 )
1870 .collect();
1871 });
1872
1873 this.request_autoscroll(Autoscroll::Fit, cx);
1874 });
1875
1876 #[derive(Default)]
1877 struct PendingEdit {
1878 indent: u32,
1879 insert_extra_newline: bool,
1880 delta: isize,
1881 ranges: SmallVec<[Range<usize>; 32]>,
1882 }
1883 }
1884
1885 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1886 self.transact(cx, |this, cx| {
1887 let old_selections = this.local_selections::<usize>(cx);
1888 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
1889 let anchors = {
1890 let snapshot = buffer.read(cx);
1891 old_selections
1892 .iter()
1893 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1894 .collect::<Vec<_>>()
1895 };
1896 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1897 buffer.edit_with_autoindent(edit_ranges, text, cx);
1898 anchors
1899 });
1900
1901 let selections = {
1902 let snapshot = this.buffer.read(cx).read(cx);
1903 selection_anchors
1904 .into_iter()
1905 .map(|(id, goal, position)| {
1906 let position = position.to_offset(&snapshot);
1907 Selection {
1908 id,
1909 start: position,
1910 end: position,
1911 goal,
1912 reversed: false,
1913 }
1914 })
1915 .collect()
1916 };
1917 this.update_selections(selections, Some(Autoscroll::Fit), cx);
1918 });
1919 }
1920
1921 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1922 let selection = self.newest_anchor_selection();
1923 if self
1924 .buffer
1925 .read(cx)
1926 .is_completion_trigger(selection.head(), text, cx)
1927 {
1928 self.show_completions(&ShowCompletions, cx);
1929 } else {
1930 self.hide_context_menu(cx);
1931 }
1932 }
1933
1934 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1935 let snapshot = self.buffer.read(cx).snapshot(cx);
1936 if let Some(pair) = snapshot
1937 .language()
1938 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1939 .cloned()
1940 {
1941 if self
1942 .local_selections::<usize>(cx)
1943 .iter()
1944 .any(|selection| selection.is_empty())
1945 {
1946 false
1947 } else {
1948 let mut selections = self.selections.to_vec();
1949 for selection in &mut selections {
1950 selection.end = selection.end.bias_left(&snapshot);
1951 }
1952 drop(snapshot);
1953
1954 self.buffer.update(cx, |buffer, cx| {
1955 buffer.edit(
1956 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1957 &pair.start,
1958 cx,
1959 );
1960 buffer.edit(
1961 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1962 &pair.end,
1963 cx,
1964 );
1965 });
1966
1967 let snapshot = self.buffer.read(cx).read(cx);
1968 for selection in &mut selections {
1969 selection.end = selection.end.bias_right(&snapshot);
1970 }
1971 drop(snapshot);
1972
1973 self.set_selections(selections.into(), None, true, cx);
1974 true
1975 }
1976 } else {
1977 false
1978 }
1979 }
1980
1981 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1982 let selections = self.local_selections::<usize>(cx);
1983 let mut bracket_pair_state = None;
1984 let mut new_selections = None;
1985 self.buffer.update(cx, |buffer, cx| {
1986 let mut snapshot = buffer.snapshot(cx);
1987 let left_biased_selections = selections
1988 .iter()
1989 .map(|selection| Selection {
1990 id: selection.id,
1991 start: snapshot.anchor_before(selection.start),
1992 end: snapshot.anchor_before(selection.end),
1993 reversed: selection.reversed,
1994 goal: selection.goal,
1995 })
1996 .collect::<Vec<_>>();
1997
1998 let autoclose_pair = snapshot.language().and_then(|language| {
1999 let first_selection_start = selections.first().unwrap().start;
2000 let pair = language.brackets().iter().find(|pair| {
2001 snapshot.contains_str_at(
2002 first_selection_start.saturating_sub(pair.start.len()),
2003 &pair.start,
2004 )
2005 });
2006 pair.and_then(|pair| {
2007 let should_autoclose = selections.iter().all(|selection| {
2008 // Ensure all selections are parked at the end of a pair start.
2009 if snapshot.contains_str_at(
2010 selection.start.saturating_sub(pair.start.len()),
2011 &pair.start,
2012 ) {
2013 snapshot
2014 .chars_at(selection.start)
2015 .next()
2016 .map_or(true, |c| language.should_autoclose_before(c))
2017 } else {
2018 false
2019 }
2020 });
2021
2022 if should_autoclose {
2023 Some(pair.clone())
2024 } else {
2025 None
2026 }
2027 })
2028 });
2029
2030 if let Some(pair) = autoclose_pair {
2031 let selection_ranges = selections
2032 .iter()
2033 .map(|selection| {
2034 let start = selection.start.to_offset(&snapshot);
2035 start..start
2036 })
2037 .collect::<SmallVec<[_; 32]>>();
2038
2039 buffer.edit(selection_ranges, &pair.end, cx);
2040 snapshot = buffer.snapshot(cx);
2041
2042 new_selections = Some(
2043 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2044 .collect::<Vec<_>>(),
2045 );
2046
2047 if pair.end.len() == 1 {
2048 let mut delta = 0;
2049 bracket_pair_state = Some(BracketPairState {
2050 ranges: selections
2051 .iter()
2052 .map(move |selection| {
2053 let offset = selection.start + delta;
2054 delta += 1;
2055 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2056 })
2057 .collect(),
2058 pair,
2059 });
2060 }
2061 }
2062 });
2063
2064 if let Some(new_selections) = new_selections {
2065 self.update_selections(new_selections, None, cx);
2066 }
2067 if let Some(bracket_pair_state) = bracket_pair_state {
2068 self.autoclose_stack.push(bracket_pair_state);
2069 }
2070 }
2071
2072 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2073 let old_selections = self.local_selections::<usize>(cx);
2074 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2075 autoclose_pair
2076 } else {
2077 return false;
2078 };
2079 if text != autoclose_pair.pair.end {
2080 return false;
2081 }
2082
2083 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2084
2085 let buffer = self.buffer.read(cx).snapshot(cx);
2086 if old_selections
2087 .iter()
2088 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2089 .all(|(selection, autoclose_range)| {
2090 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2091 selection.is_empty() && selection.start == autoclose_range_end
2092 })
2093 {
2094 let new_selections = old_selections
2095 .into_iter()
2096 .map(|selection| {
2097 let cursor = selection.start + 1;
2098 Selection {
2099 id: selection.id,
2100 start: cursor,
2101 end: cursor,
2102 reversed: false,
2103 goal: SelectionGoal::None,
2104 }
2105 })
2106 .collect();
2107 self.autoclose_stack.pop();
2108 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2109 true
2110 } else {
2111 false
2112 }
2113 }
2114
2115 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2116 let offset = position.to_offset(buffer);
2117 let (word_range, kind) = buffer.surrounding_word(offset);
2118 if offset > word_range.start && kind == Some(CharKind::Word) {
2119 Some(
2120 buffer
2121 .text_for_range(word_range.start..offset)
2122 .collect::<String>(),
2123 )
2124 } else {
2125 None
2126 }
2127 }
2128
2129 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2130 if self.pending_rename.is_some() {
2131 return;
2132 }
2133
2134 let project = if let Some(project) = self.project.clone() {
2135 project
2136 } else {
2137 return;
2138 };
2139
2140 let position = self.newest_anchor_selection().head();
2141 let (buffer, buffer_position) = if let Some(output) = self
2142 .buffer
2143 .read(cx)
2144 .text_anchor_for_position(position.clone(), cx)
2145 {
2146 output
2147 } else {
2148 return;
2149 };
2150
2151 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2152 let completions = project.update(cx, |project, cx| {
2153 project.completions(&buffer, buffer_position.clone(), cx)
2154 });
2155
2156 let id = post_inc(&mut self.next_completion_id);
2157 let task = cx.spawn_weak(|this, mut cx| {
2158 async move {
2159 let completions = completions.await?;
2160 if completions.is_empty() {
2161 return Ok(());
2162 }
2163
2164 let mut menu = CompletionsMenu {
2165 id,
2166 initial_position: position,
2167 match_candidates: completions
2168 .iter()
2169 .enumerate()
2170 .map(|(id, completion)| {
2171 StringMatchCandidate::new(
2172 id,
2173 completion.label.text[completion.label.filter_range.clone()].into(),
2174 )
2175 })
2176 .collect(),
2177 buffer,
2178 completions: completions.into(),
2179 matches: Vec::new().into(),
2180 selected_item: 0,
2181 list: Default::default(),
2182 };
2183
2184 menu.filter(query.as_deref(), cx.background()).await;
2185
2186 if let Some(this) = this.upgrade(&cx) {
2187 this.update(&mut cx, |this, cx| {
2188 match this.context_menu.as_ref() {
2189 None => {}
2190 Some(ContextMenu::Completions(prev_menu)) => {
2191 if prev_menu.id > menu.id {
2192 return;
2193 }
2194 }
2195 _ => return,
2196 }
2197
2198 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2199 if this.focused {
2200 this.show_context_menu(ContextMenu::Completions(menu), cx);
2201 }
2202
2203 cx.notify();
2204 });
2205 }
2206 Ok::<_, anyhow::Error>(())
2207 }
2208 .log_err()
2209 });
2210 self.completion_tasks.push((id, task));
2211 }
2212
2213 pub fn confirm_completion(
2214 &mut self,
2215 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2216 cx: &mut ViewContext<Self>,
2217 ) -> Option<Task<Result<()>>> {
2218 use language::ToOffset as _;
2219
2220 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2221 menu
2222 } else {
2223 return None;
2224 };
2225
2226 let mat = completions_menu
2227 .matches
2228 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2229 let buffer_handle = completions_menu.buffer;
2230 let completion = completions_menu.completions.get(mat.candidate_id)?;
2231
2232 let snippet;
2233 let text;
2234 if completion.is_snippet() {
2235 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2236 text = snippet.as_ref().unwrap().text.clone();
2237 } else {
2238 snippet = None;
2239 text = completion.new_text.clone();
2240 };
2241 let buffer = buffer_handle.read(cx);
2242 let old_range = completion.old_range.to_offset(&buffer);
2243 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2244
2245 let selections = self.local_selections::<usize>(cx);
2246 let newest_selection = self.newest_anchor_selection();
2247 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2248 return None;
2249 }
2250
2251 let lookbehind = newest_selection
2252 .start
2253 .text_anchor
2254 .to_offset(buffer)
2255 .saturating_sub(old_range.start);
2256 let lookahead = old_range
2257 .end
2258 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2259 let mut common_prefix_len = old_text
2260 .bytes()
2261 .zip(text.bytes())
2262 .take_while(|(a, b)| a == b)
2263 .count();
2264
2265 let snapshot = self.buffer.read(cx).snapshot(cx);
2266 let mut ranges = Vec::new();
2267 for selection in &selections {
2268 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2269 let start = selection.start.saturating_sub(lookbehind);
2270 let end = selection.end + lookahead;
2271 ranges.push(start + common_prefix_len..end);
2272 } else {
2273 common_prefix_len = 0;
2274 ranges.clear();
2275 ranges.extend(selections.iter().map(|s| {
2276 if s.id == newest_selection.id {
2277 old_range.clone()
2278 } else {
2279 s.start..s.end
2280 }
2281 }));
2282 break;
2283 }
2284 }
2285 let text = &text[common_prefix_len..];
2286
2287 self.transact(cx, |this, cx| {
2288 if let Some(mut snippet) = snippet {
2289 snippet.text = text.to_string();
2290 for tabstop in snippet.tabstops.iter_mut().flatten() {
2291 tabstop.start -= common_prefix_len as isize;
2292 tabstop.end -= common_prefix_len as isize;
2293 }
2294
2295 this.insert_snippet(&ranges, snippet, cx).log_err();
2296 } else {
2297 this.buffer.update(cx, |buffer, cx| {
2298 buffer.edit_with_autoindent(ranges, text, cx);
2299 });
2300 }
2301 });
2302
2303 let project = self.project.clone()?;
2304 let apply_edits = project.update(cx, |project, cx| {
2305 project.apply_additional_edits_for_completion(
2306 buffer_handle,
2307 completion.clone(),
2308 true,
2309 cx,
2310 )
2311 });
2312 Some(cx.foreground().spawn(async move {
2313 apply_edits.await?;
2314 Ok(())
2315 }))
2316 }
2317
2318 pub fn toggle_code_actions(
2319 &mut self,
2320 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2321 cx: &mut ViewContext<Self>,
2322 ) {
2323 if matches!(
2324 self.context_menu.as_ref(),
2325 Some(ContextMenu::CodeActions(_))
2326 ) {
2327 self.context_menu.take();
2328 cx.notify();
2329 return;
2330 }
2331
2332 let mut task = self.code_actions_task.take();
2333 cx.spawn_weak(|this, mut cx| async move {
2334 while let Some(prev_task) = task {
2335 prev_task.await;
2336 task = this
2337 .upgrade(&cx)
2338 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2339 }
2340
2341 if let Some(this) = this.upgrade(&cx) {
2342 this.update(&mut cx, |this, cx| {
2343 if this.focused {
2344 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2345 this.show_context_menu(
2346 ContextMenu::CodeActions(CodeActionsMenu {
2347 buffer,
2348 actions,
2349 selected_item: Default::default(),
2350 list: Default::default(),
2351 deployed_from_indicator,
2352 }),
2353 cx,
2354 );
2355 }
2356 }
2357 })
2358 }
2359 Ok::<_, anyhow::Error>(())
2360 })
2361 .detach_and_log_err(cx);
2362 }
2363
2364 pub fn confirm_code_action(
2365 workspace: &mut Workspace,
2366 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2367 cx: &mut ViewContext<Workspace>,
2368 ) -> Option<Task<Result<()>>> {
2369 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2370 let actions_menu = if let ContextMenu::CodeActions(menu) =
2371 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2372 {
2373 menu
2374 } else {
2375 return None;
2376 };
2377 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2378 let action = actions_menu.actions.get(action_ix)?.clone();
2379 let title = action.lsp_action.title.clone();
2380 let buffer = actions_menu.buffer;
2381
2382 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2383 project.apply_code_action(buffer, action, true, cx)
2384 });
2385 Some(cx.spawn(|workspace, cx| async move {
2386 let project_transaction = apply_code_actions.await?;
2387 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2388 }))
2389 }
2390
2391 async fn open_project_transaction(
2392 this: ViewHandle<Editor>,
2393 workspace: ViewHandle<Workspace>,
2394 transaction: ProjectTransaction,
2395 title: String,
2396 mut cx: AsyncAppContext,
2397 ) -> Result<()> {
2398 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2399
2400 // If the project transaction's edits are all contained within this editor, then
2401 // avoid opening a new editor to display them.
2402 let mut entries = transaction.0.iter();
2403 if let Some((buffer, transaction)) = entries.next() {
2404 if entries.next().is_none() {
2405 let excerpt = this.read_with(&cx, |editor, cx| {
2406 editor
2407 .buffer()
2408 .read(cx)
2409 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2410 });
2411 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2412 if excerpted_buffer == *buffer {
2413 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2414 let excerpt_range = excerpt_range.to_offset(&snapshot);
2415 if snapshot
2416 .edited_ranges_for_transaction(transaction)
2417 .all(|range| {
2418 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2419 })
2420 {
2421 return Ok(());
2422 }
2423 }
2424 }
2425 }
2426 }
2427
2428 let mut ranges_to_highlight = Vec::new();
2429 let excerpt_buffer = cx.add_model(|cx| {
2430 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2431 for (buffer, transaction) in &transaction.0 {
2432 let snapshot = buffer.read(cx).snapshot();
2433 ranges_to_highlight.extend(
2434 multibuffer.push_excerpts_with_context_lines(
2435 buffer.clone(),
2436 snapshot
2437 .edited_ranges_for_transaction::<usize>(transaction)
2438 .collect(),
2439 1,
2440 cx,
2441 ),
2442 );
2443 }
2444 multibuffer.push_transaction(&transaction.0);
2445 multibuffer
2446 });
2447
2448 workspace.update(&mut cx, |workspace, cx| {
2449 let project = workspace.project().clone();
2450 let editor =
2451 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2452 workspace.add_item(Box::new(editor.clone()), cx);
2453 editor.update(cx, |editor, cx| {
2454 let color = editor.style(cx).highlighted_line_background;
2455 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2456 });
2457 });
2458
2459 Ok(())
2460 }
2461
2462 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2463 let project = self.project.as_ref()?;
2464 let buffer = self.buffer.read(cx);
2465 let newest_selection = self.newest_anchor_selection().clone();
2466 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2467 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2468 if start_buffer != end_buffer {
2469 return None;
2470 }
2471
2472 let actions = project.update(cx, |project, cx| {
2473 project.code_actions(&start_buffer, start..end, cx)
2474 });
2475 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2476 let actions = actions.await;
2477 if let Some(this) = this.upgrade(&cx) {
2478 this.update(&mut cx, |this, cx| {
2479 this.available_code_actions = actions.log_err().and_then(|actions| {
2480 if actions.is_empty() {
2481 None
2482 } else {
2483 Some((start_buffer, actions.into()))
2484 }
2485 });
2486 cx.notify();
2487 })
2488 }
2489 }));
2490 None
2491 }
2492
2493 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2494 if self.pending_rename.is_some() {
2495 return None;
2496 }
2497
2498 let project = self.project.as_ref()?;
2499 let buffer = self.buffer.read(cx);
2500 let newest_selection = self.newest_anchor_selection().clone();
2501 let cursor_position = newest_selection.head();
2502 let (cursor_buffer, cursor_buffer_position) =
2503 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2504 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2505 if cursor_buffer != tail_buffer {
2506 return None;
2507 }
2508
2509 let highlights = project.update(cx, |project, cx| {
2510 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2511 });
2512
2513 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2514 let highlights = highlights.log_err().await;
2515 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2516 this.update(&mut cx, |this, cx| {
2517 if this.pending_rename.is_some() {
2518 return;
2519 }
2520
2521 let buffer_id = cursor_position.buffer_id;
2522 let style = this.style(cx);
2523 let read_background = style.document_highlight_read_background;
2524 let write_background = style.document_highlight_write_background;
2525 let buffer = this.buffer.read(cx);
2526 if !buffer
2527 .text_anchor_for_position(cursor_position, cx)
2528 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2529 {
2530 return;
2531 }
2532
2533 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2534 let mut write_ranges = Vec::new();
2535 let mut read_ranges = Vec::new();
2536 for highlight in highlights {
2537 for (excerpt_id, excerpt_range) in
2538 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2539 {
2540 let start = highlight
2541 .range
2542 .start
2543 .max(&excerpt_range.start, cursor_buffer_snapshot);
2544 let end = highlight
2545 .range
2546 .end
2547 .min(&excerpt_range.end, cursor_buffer_snapshot);
2548 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
2549 continue;
2550 }
2551
2552 let range = Anchor {
2553 buffer_id,
2554 excerpt_id: excerpt_id.clone(),
2555 text_anchor: start,
2556 }..Anchor {
2557 buffer_id,
2558 excerpt_id,
2559 text_anchor: end,
2560 };
2561 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2562 write_ranges.push(range);
2563 } else {
2564 read_ranges.push(range);
2565 }
2566 }
2567 }
2568
2569 this.highlight_background::<DocumentHighlightRead>(
2570 read_ranges,
2571 read_background,
2572 cx,
2573 );
2574 this.highlight_background::<DocumentHighlightWrite>(
2575 write_ranges,
2576 write_background,
2577 cx,
2578 );
2579 cx.notify();
2580 });
2581 }
2582 }));
2583 None
2584 }
2585
2586 pub fn render_code_actions_indicator(
2587 &self,
2588 style: &EditorStyle,
2589 cx: &mut ViewContext<Self>,
2590 ) -> Option<ElementBox> {
2591 if self.available_code_actions.is_some() {
2592 enum Tag {}
2593 Some(
2594 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2595 Svg::new("icons/zap.svg")
2596 .with_color(style.code_actions_indicator)
2597 .boxed()
2598 })
2599 .with_cursor_style(CursorStyle::PointingHand)
2600 .with_padding(Padding::uniform(3.))
2601 .on_mouse_down(|cx| {
2602 cx.dispatch_action(ToggleCodeActions(true));
2603 })
2604 .boxed(),
2605 )
2606 } else {
2607 None
2608 }
2609 }
2610
2611 pub fn context_menu_visible(&self) -> bool {
2612 self.context_menu
2613 .as_ref()
2614 .map_or(false, |menu| menu.visible())
2615 }
2616
2617 pub fn render_context_menu(
2618 &self,
2619 cursor_position: DisplayPoint,
2620 style: EditorStyle,
2621 cx: &AppContext,
2622 ) -> Option<(DisplayPoint, ElementBox)> {
2623 self.context_menu
2624 .as_ref()
2625 .map(|menu| menu.render(cursor_position, style, cx))
2626 }
2627
2628 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2629 if !matches!(menu, ContextMenu::Completions(_)) {
2630 self.completion_tasks.clear();
2631 }
2632 self.context_menu = Some(menu);
2633 cx.notify();
2634 }
2635
2636 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2637 cx.notify();
2638 self.completion_tasks.clear();
2639 self.context_menu.take()
2640 }
2641
2642 pub fn insert_snippet(
2643 &mut self,
2644 insertion_ranges: &[Range<usize>],
2645 snippet: Snippet,
2646 cx: &mut ViewContext<Self>,
2647 ) -> Result<()> {
2648 let tabstops = self.buffer.update(cx, |buffer, cx| {
2649 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2650
2651 let snapshot = &*buffer.read(cx);
2652 let snippet = &snippet;
2653 snippet
2654 .tabstops
2655 .iter()
2656 .map(|tabstop| {
2657 let mut tabstop_ranges = tabstop
2658 .iter()
2659 .flat_map(|tabstop_range| {
2660 let mut delta = 0 as isize;
2661 insertion_ranges.iter().map(move |insertion_range| {
2662 let insertion_start = insertion_range.start as isize + delta;
2663 delta +=
2664 snippet.text.len() as isize - insertion_range.len() as isize;
2665
2666 let start = snapshot.anchor_before(
2667 (insertion_start + tabstop_range.start) as usize,
2668 );
2669 let end = snapshot
2670 .anchor_after((insertion_start + tabstop_range.end) as usize);
2671 start..end
2672 })
2673 })
2674 .collect::<Vec<_>>();
2675 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
2676 tabstop_ranges
2677 })
2678 .collect::<Vec<_>>()
2679 });
2680
2681 if let Some(tabstop) = tabstops.first() {
2682 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2683 self.snippet_stack.push(SnippetState {
2684 active_index: 0,
2685 ranges: tabstops,
2686 });
2687 }
2688
2689 Ok(())
2690 }
2691
2692 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2693 self.move_to_snippet_tabstop(Bias::Right, cx)
2694 }
2695
2696 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2697 self.move_to_snippet_tabstop(Bias::Left, cx);
2698 }
2699
2700 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2701 let buffer = self.buffer.read(cx).snapshot(cx);
2702
2703 if let Some(snippet) = self.snippet_stack.last_mut() {
2704 match bias {
2705 Bias::Left => {
2706 if snippet.active_index > 0 {
2707 snippet.active_index -= 1;
2708 } else {
2709 return false;
2710 }
2711 }
2712 Bias::Right => {
2713 if snippet.active_index + 1 < snippet.ranges.len() {
2714 snippet.active_index += 1;
2715 } else {
2716 return false;
2717 }
2718 }
2719 }
2720 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2721 let new_selections = current_ranges
2722 .iter()
2723 .map(|new_range| {
2724 let new_range = new_range.to_offset(&buffer);
2725 Selection {
2726 id: post_inc(&mut self.next_selection_id),
2727 start: new_range.start,
2728 end: new_range.end,
2729 reversed: false,
2730 goal: SelectionGoal::None,
2731 }
2732 })
2733 .collect();
2734
2735 // Remove the snippet state when moving to the last tabstop.
2736 if snippet.active_index + 1 == snippet.ranges.len() {
2737 self.snippet_stack.pop();
2738 }
2739
2740 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2741 return true;
2742 }
2743 self.snippet_stack.pop();
2744 }
2745
2746 false
2747 }
2748
2749 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2750 self.transact(cx, |this, cx| {
2751 this.select_all(&SelectAll, cx);
2752 this.insert("", cx);
2753 });
2754 }
2755
2756 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2757 let mut selections = self.local_selections::<Point>(cx);
2758 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2759 for selection in &mut selections {
2760 if selection.is_empty() {
2761 let old_head = selection.head();
2762 let mut new_head =
2763 movement::left(&display_map, old_head.to_display_point(&display_map))
2764 .to_point(&display_map);
2765 if let Some((buffer, line_buffer_range)) = display_map
2766 .buffer_snapshot
2767 .buffer_line_for_row(old_head.row)
2768 {
2769 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2770 if old_head.column <= indent_column && old_head.column > 0 {
2771 let indent = buffer.indent_size();
2772 new_head = cmp::min(
2773 new_head,
2774 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2775 );
2776 }
2777 }
2778
2779 selection.set_head(new_head, SelectionGoal::None);
2780 }
2781 }
2782
2783 self.transact(cx, |this, cx| {
2784 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2785 this.insert("", cx);
2786 });
2787 }
2788
2789 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2790 self.transact(cx, |this, cx| {
2791 this.move_selections(cx, |map, selection| {
2792 if selection.is_empty() {
2793 let cursor = movement::right(map, selection.head());
2794 selection.set_head(cursor, SelectionGoal::None);
2795 }
2796 });
2797 this.insert(&"", cx);
2798 });
2799 }
2800
2801 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2802 if self.move_to_next_snippet_tabstop(cx) {
2803 return;
2804 }
2805
2806 let tab_size = cx.global::<Settings>().tab_size;
2807 let mut selections = self.local_selections::<Point>(cx);
2808 self.transact(cx, |this, cx| {
2809 let mut last_indent = None;
2810 this.buffer.update(cx, |buffer, cx| {
2811 for selection in &mut selections {
2812 if selection.is_empty() {
2813 let char_column = buffer
2814 .read(cx)
2815 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2816 .flat_map(str::chars)
2817 .count();
2818 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2819 buffer.edit(
2820 [selection.start..selection.start],
2821 " ".repeat(chars_to_next_tab_stop),
2822 cx,
2823 );
2824 selection.start.column += chars_to_next_tab_stop as u32;
2825 selection.end = selection.start;
2826 } else {
2827 let mut start_row = selection.start.row;
2828 let mut end_row = selection.end.row + 1;
2829
2830 // If a selection ends at the beginning of a line, don't indent
2831 // that last line.
2832 if selection.end.column == 0 {
2833 end_row -= 1;
2834 }
2835
2836 // Avoid re-indenting a row that has already been indented by a
2837 // previous selection, but still update this selection's column
2838 // to reflect that indentation.
2839 if let Some((last_indent_row, last_indent_len)) = last_indent {
2840 if last_indent_row == selection.start.row {
2841 selection.start.column += last_indent_len;
2842 start_row += 1;
2843 }
2844 if last_indent_row == selection.end.row {
2845 selection.end.column += last_indent_len;
2846 }
2847 }
2848
2849 for row in start_row..end_row {
2850 let indent_column =
2851 buffer.read(cx).indent_column_for_line(row) as usize;
2852 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2853 let row_start = Point::new(row, 0);
2854 buffer.edit(
2855 [row_start..row_start],
2856 " ".repeat(columns_to_next_tab_stop),
2857 cx,
2858 );
2859
2860 // Update this selection's endpoints to reflect the indentation.
2861 if row == selection.start.row {
2862 selection.start.column += columns_to_next_tab_stop as u32;
2863 }
2864 if row == selection.end.row {
2865 selection.end.column += columns_to_next_tab_stop as u32;
2866 }
2867
2868 last_indent = Some((row, columns_to_next_tab_stop as u32));
2869 }
2870 }
2871 }
2872 });
2873
2874 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2875 });
2876 }
2877
2878 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2879 if !self.snippet_stack.is_empty() {
2880 self.move_to_prev_snippet_tabstop(cx);
2881 return;
2882 }
2883
2884 let tab_size = cx.global::<Settings>().tab_size;
2885 let selections = self.local_selections::<Point>(cx);
2886 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2887 let mut deletion_ranges = Vec::new();
2888 let mut last_outdent = None;
2889 {
2890 let buffer = self.buffer.read(cx).read(cx);
2891 for selection in &selections {
2892 let mut rows = selection.spanned_rows(false, &display_map);
2893
2894 // Avoid re-outdenting a row that has already been outdented by a
2895 // previous selection.
2896 if let Some(last_row) = last_outdent {
2897 if last_row == rows.start {
2898 rows.start += 1;
2899 }
2900 }
2901
2902 for row in rows {
2903 let column = buffer.indent_column_for_line(row) as usize;
2904 if column > 0 {
2905 let mut deletion_len = (column % tab_size) as u32;
2906 if deletion_len == 0 {
2907 deletion_len = tab_size as u32;
2908 }
2909 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2910 last_outdent = Some(row);
2911 }
2912 }
2913 }
2914 }
2915
2916 self.transact(cx, |this, cx| {
2917 this.buffer.update(cx, |buffer, cx| {
2918 buffer.edit(deletion_ranges, "", cx);
2919 });
2920 this.update_selections(
2921 this.local_selections::<usize>(cx),
2922 Some(Autoscroll::Fit),
2923 cx,
2924 );
2925 });
2926 }
2927
2928 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2929 let selections = self.local_selections::<Point>(cx);
2930 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2931 let buffer = self.buffer.read(cx).snapshot(cx);
2932
2933 let mut new_cursors = Vec::new();
2934 let mut edit_ranges = Vec::new();
2935 let mut selections = selections.iter().peekable();
2936 while let Some(selection) = selections.next() {
2937 let mut rows = selection.spanned_rows(false, &display_map);
2938 let goal_display_column = selection.head().to_display_point(&display_map).column();
2939
2940 // Accumulate contiguous regions of rows that we want to delete.
2941 while let Some(next_selection) = selections.peek() {
2942 let next_rows = next_selection.spanned_rows(false, &display_map);
2943 if next_rows.start <= rows.end {
2944 rows.end = next_rows.end;
2945 selections.next().unwrap();
2946 } else {
2947 break;
2948 }
2949 }
2950
2951 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2952 let edit_end;
2953 let cursor_buffer_row;
2954 if buffer.max_point().row >= rows.end {
2955 // If there's a line after the range, delete the \n from the end of the row range
2956 // and position the cursor on the next line.
2957 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2958 cursor_buffer_row = rows.end;
2959 } else {
2960 // If there isn't a line after the range, delete the \n from the line before the
2961 // start of the row range and position the cursor there.
2962 edit_start = edit_start.saturating_sub(1);
2963 edit_end = buffer.len();
2964 cursor_buffer_row = rows.start.saturating_sub(1);
2965 }
2966
2967 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2968 *cursor.column_mut() =
2969 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2970
2971 new_cursors.push((
2972 selection.id,
2973 buffer.anchor_after(cursor.to_point(&display_map)),
2974 ));
2975 edit_ranges.push(edit_start..edit_end);
2976 }
2977
2978 self.transact(cx, |this, cx| {
2979 let buffer = this.buffer.update(cx, |buffer, cx| {
2980 buffer.edit(edit_ranges, "", cx);
2981 buffer.snapshot(cx)
2982 });
2983 let new_selections = new_cursors
2984 .into_iter()
2985 .map(|(id, cursor)| {
2986 let cursor = cursor.to_point(&buffer);
2987 Selection {
2988 id,
2989 start: cursor,
2990 end: cursor,
2991 reversed: false,
2992 goal: SelectionGoal::None,
2993 }
2994 })
2995 .collect();
2996 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2997 });
2998 }
2999
3000 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3001 let selections = self.local_selections::<Point>(cx);
3002 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3003 let buffer = &display_map.buffer_snapshot;
3004
3005 let mut edits = Vec::new();
3006 let mut selections_iter = selections.iter().peekable();
3007 while let Some(selection) = selections_iter.next() {
3008 // Avoid duplicating the same lines twice.
3009 let mut rows = selection.spanned_rows(false, &display_map);
3010
3011 while let Some(next_selection) = selections_iter.peek() {
3012 let next_rows = next_selection.spanned_rows(false, &display_map);
3013 if next_rows.start <= rows.end - 1 {
3014 rows.end = next_rows.end;
3015 selections_iter.next().unwrap();
3016 } else {
3017 break;
3018 }
3019 }
3020
3021 // Copy the text from the selected row region and splice it at the start of the region.
3022 let start = Point::new(rows.start, 0);
3023 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3024 let text = buffer
3025 .text_for_range(start..end)
3026 .chain(Some("\n"))
3027 .collect::<String>();
3028 edits.push((start, text, rows.len() as u32));
3029 }
3030
3031 self.transact(cx, |this, cx| {
3032 this.buffer.update(cx, |buffer, cx| {
3033 for (point, text, _) in edits.into_iter().rev() {
3034 buffer.edit(Some(point..point), text, cx);
3035 }
3036 });
3037
3038 this.request_autoscroll(Autoscroll::Fit, cx);
3039 });
3040 }
3041
3042 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3043 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3044 let buffer = self.buffer.read(cx).snapshot(cx);
3045
3046 let mut edits = Vec::new();
3047 let mut unfold_ranges = Vec::new();
3048 let mut refold_ranges = Vec::new();
3049
3050 let selections = self.local_selections::<Point>(cx);
3051 let mut selections = selections.iter().peekable();
3052 let mut contiguous_row_selections = Vec::new();
3053 let mut new_selections = Vec::new();
3054
3055 while let Some(selection) = selections.next() {
3056 // Find all the selections that span a contiguous row range
3057 contiguous_row_selections.push(selection.clone());
3058 let start_row = selection.start.row;
3059 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3060 display_map.next_line_boundary(selection.end).0.row + 1
3061 } else {
3062 selection.end.row
3063 };
3064
3065 while let Some(next_selection) = selections.peek() {
3066 if next_selection.start.row <= end_row {
3067 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3068 display_map.next_line_boundary(next_selection.end).0.row + 1
3069 } else {
3070 next_selection.end.row
3071 };
3072 contiguous_row_selections.push(selections.next().unwrap().clone());
3073 } else {
3074 break;
3075 }
3076 }
3077
3078 // Move the text spanned by the row range to be before the line preceding the row range
3079 if start_row > 0 {
3080 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3081 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3082 let insertion_point = display_map
3083 .prev_line_boundary(Point::new(start_row - 1, 0))
3084 .0;
3085
3086 // Don't move lines across excerpts
3087 if buffer
3088 .excerpt_boundaries_in_range((
3089 Bound::Excluded(insertion_point),
3090 Bound::Included(range_to_move.end),
3091 ))
3092 .next()
3093 .is_none()
3094 {
3095 let text = buffer
3096 .text_for_range(range_to_move.clone())
3097 .flat_map(|s| s.chars())
3098 .skip(1)
3099 .chain(['\n'])
3100 .collect::<String>();
3101
3102 edits.push((
3103 buffer.anchor_after(range_to_move.start)
3104 ..buffer.anchor_before(range_to_move.end),
3105 String::new(),
3106 ));
3107 let insertion_anchor = buffer.anchor_after(insertion_point);
3108 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3109
3110 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3111
3112 // Move selections up
3113 new_selections.extend(contiguous_row_selections.drain(..).map(
3114 |mut selection| {
3115 selection.start.row -= row_delta;
3116 selection.end.row -= row_delta;
3117 selection
3118 },
3119 ));
3120
3121 // Move folds up
3122 unfold_ranges.push(range_to_move.clone());
3123 for fold in display_map.folds_in_range(
3124 buffer.anchor_before(range_to_move.start)
3125 ..buffer.anchor_after(range_to_move.end),
3126 ) {
3127 let mut start = fold.start.to_point(&buffer);
3128 let mut end = fold.end.to_point(&buffer);
3129 start.row -= row_delta;
3130 end.row -= row_delta;
3131 refold_ranges.push(start..end);
3132 }
3133 }
3134 }
3135
3136 // If we didn't move line(s), preserve the existing selections
3137 new_selections.extend(contiguous_row_selections.drain(..));
3138 }
3139
3140 self.transact(cx, |this, cx| {
3141 this.unfold_ranges(unfold_ranges, true, cx);
3142 this.buffer.update(cx, |buffer, cx| {
3143 for (range, text) in edits {
3144 buffer.edit([range], text, cx);
3145 }
3146 });
3147 this.fold_ranges(refold_ranges, cx);
3148 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3149 });
3150 }
3151
3152 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3153 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3154 let buffer = self.buffer.read(cx).snapshot(cx);
3155
3156 let mut edits = Vec::new();
3157 let mut unfold_ranges = Vec::new();
3158 let mut refold_ranges = Vec::new();
3159
3160 let selections = self.local_selections::<Point>(cx);
3161 let mut selections = selections.iter().peekable();
3162 let mut contiguous_row_selections = Vec::new();
3163 let mut new_selections = Vec::new();
3164
3165 while let Some(selection) = selections.next() {
3166 // Find all the selections that span a contiguous row range
3167 contiguous_row_selections.push(selection.clone());
3168 let start_row = selection.start.row;
3169 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3170 display_map.next_line_boundary(selection.end).0.row + 1
3171 } else {
3172 selection.end.row
3173 };
3174
3175 while let Some(next_selection) = selections.peek() {
3176 if next_selection.start.row <= end_row {
3177 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3178 display_map.next_line_boundary(next_selection.end).0.row + 1
3179 } else {
3180 next_selection.end.row
3181 };
3182 contiguous_row_selections.push(selections.next().unwrap().clone());
3183 } else {
3184 break;
3185 }
3186 }
3187
3188 // Move the text spanned by the row range to be after the last line of the row range
3189 if end_row <= buffer.max_point().row {
3190 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3191 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3192
3193 // Don't move lines across excerpt boundaries
3194 if buffer
3195 .excerpt_boundaries_in_range((
3196 Bound::Excluded(range_to_move.start),
3197 Bound::Included(insertion_point),
3198 ))
3199 .next()
3200 .is_none()
3201 {
3202 let mut text = String::from("\n");
3203 text.extend(buffer.text_for_range(range_to_move.clone()));
3204 text.pop(); // Drop trailing newline
3205 edits.push((
3206 buffer.anchor_after(range_to_move.start)
3207 ..buffer.anchor_before(range_to_move.end),
3208 String::new(),
3209 ));
3210 let insertion_anchor = buffer.anchor_after(insertion_point);
3211 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3212
3213 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3214
3215 // Move selections down
3216 new_selections.extend(contiguous_row_selections.drain(..).map(
3217 |mut selection| {
3218 selection.start.row += row_delta;
3219 selection.end.row += row_delta;
3220 selection
3221 },
3222 ));
3223
3224 // Move folds down
3225 unfold_ranges.push(range_to_move.clone());
3226 for fold in display_map.folds_in_range(
3227 buffer.anchor_before(range_to_move.start)
3228 ..buffer.anchor_after(range_to_move.end),
3229 ) {
3230 let mut start = fold.start.to_point(&buffer);
3231 let mut end = fold.end.to_point(&buffer);
3232 start.row += row_delta;
3233 end.row += row_delta;
3234 refold_ranges.push(start..end);
3235 }
3236 }
3237 }
3238
3239 // If we didn't move line(s), preserve the existing selections
3240 new_selections.extend(contiguous_row_selections.drain(..));
3241 }
3242
3243 self.transact(cx, |this, cx| {
3244 this.unfold_ranges(unfold_ranges, true, cx);
3245 this.buffer.update(cx, |buffer, cx| {
3246 for (range, text) in edits {
3247 buffer.edit([range], text, cx);
3248 }
3249 });
3250 this.fold_ranges(refold_ranges, cx);
3251 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3252 });
3253 }
3254
3255 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3256 let mut text = String::new();
3257 let mut selections = self.local_selections::<Point>(cx);
3258 let mut clipboard_selections = Vec::with_capacity(selections.len());
3259 {
3260 let buffer = self.buffer.read(cx).read(cx);
3261 let max_point = buffer.max_point();
3262 for selection in &mut selections {
3263 let is_entire_line = selection.is_empty();
3264 if is_entire_line {
3265 selection.start = Point::new(selection.start.row, 0);
3266 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3267 selection.goal = SelectionGoal::None;
3268 }
3269 let mut len = 0;
3270 for chunk in buffer.text_for_range(selection.start..selection.end) {
3271 text.push_str(chunk);
3272 len += chunk.len();
3273 }
3274 clipboard_selections.push(ClipboardSelection {
3275 len,
3276 is_entire_line,
3277 });
3278 }
3279 }
3280
3281 self.transact(cx, |this, cx| {
3282 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3283 this.insert("", cx);
3284 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3285 });
3286 }
3287
3288 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3289 let selections = self.local_selections::<Point>(cx);
3290 let mut text = String::new();
3291 let mut clipboard_selections = Vec::with_capacity(selections.len());
3292 {
3293 let buffer = self.buffer.read(cx).read(cx);
3294 let max_point = buffer.max_point();
3295 for selection in selections.iter() {
3296 let mut start = selection.start;
3297 let mut end = selection.end;
3298 let is_entire_line = selection.is_empty();
3299 if is_entire_line {
3300 start = Point::new(start.row, 0);
3301 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3302 }
3303 let mut len = 0;
3304 for chunk in buffer.text_for_range(start..end) {
3305 text.push_str(chunk);
3306 len += chunk.len();
3307 }
3308 clipboard_selections.push(ClipboardSelection {
3309 len,
3310 is_entire_line,
3311 });
3312 }
3313 }
3314
3315 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3316 }
3317
3318 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3319 self.transact(cx, |this, cx| {
3320 if let Some(item) = cx.as_mut().read_from_clipboard() {
3321 let clipboard_text = item.text();
3322 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3323 let mut selections = this.local_selections::<usize>(cx);
3324 let all_selections_were_entire_line =
3325 clipboard_selections.iter().all(|s| s.is_entire_line);
3326 if clipboard_selections.len() != selections.len() {
3327 clipboard_selections.clear();
3328 }
3329
3330 let mut delta = 0_isize;
3331 let mut start_offset = 0;
3332 for (i, selection) in selections.iter_mut().enumerate() {
3333 let to_insert;
3334 let entire_line;
3335 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3336 let end_offset = start_offset + clipboard_selection.len;
3337 to_insert = &clipboard_text[start_offset..end_offset];
3338 entire_line = clipboard_selection.is_entire_line;
3339 start_offset = end_offset
3340 } else {
3341 to_insert = clipboard_text.as_str();
3342 entire_line = all_selections_were_entire_line;
3343 }
3344
3345 selection.start = (selection.start as isize + delta) as usize;
3346 selection.end = (selection.end as isize + delta) as usize;
3347
3348 this.buffer.update(cx, |buffer, cx| {
3349 // If the corresponding selection was empty when this slice of the
3350 // clipboard text was written, then the entire line containing the
3351 // selection was copied. If this selection is also currently empty,
3352 // then paste the line before the current line of the buffer.
3353 let range = if selection.is_empty() && entire_line {
3354 let column =
3355 selection.start.to_point(&buffer.read(cx)).column as usize;
3356 let line_start = selection.start - column;
3357 line_start..line_start
3358 } else {
3359 selection.start..selection.end
3360 };
3361
3362 delta += to_insert.len() as isize - range.len() as isize;
3363 buffer.edit([range], to_insert, cx);
3364 selection.start += to_insert.len();
3365 selection.end = selection.start;
3366 });
3367 }
3368 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3369 } else {
3370 this.insert(clipboard_text, cx);
3371 }
3372 }
3373 });
3374 }
3375
3376 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3377 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3378 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3379 self.set_selections(selections, None, true, cx);
3380 }
3381 self.request_autoscroll(Autoscroll::Fit, cx);
3382 cx.emit(Event::Edited);
3383 }
3384 }
3385
3386 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3387 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3388 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3389 self.set_selections(selections, None, true, cx);
3390 }
3391 self.request_autoscroll(Autoscroll::Fit, cx);
3392 cx.emit(Event::Edited);
3393 }
3394 }
3395
3396 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3397 self.buffer
3398 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3399 }
3400
3401 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3402 self.move_selections(cx, |map, selection| {
3403 let cursor = if selection.is_empty() {
3404 movement::left(map, selection.start)
3405 } else {
3406 selection.start
3407 };
3408 selection.collapse_to(cursor, SelectionGoal::None);
3409 });
3410 }
3411
3412 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3413 self.move_selection_heads(cx, |map, head, _| {
3414 (movement::left(map, head), SelectionGoal::None)
3415 });
3416 }
3417
3418 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3419 self.move_selections(cx, |map, selection| {
3420 let cursor = if selection.is_empty() {
3421 movement::right(map, selection.end)
3422 } else {
3423 selection.end
3424 };
3425 selection.collapse_to(cursor, SelectionGoal::None)
3426 });
3427 }
3428
3429 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3430 self.move_selection_heads(cx, |map, head, _| {
3431 (movement::right(map, head), SelectionGoal::None)
3432 });
3433 }
3434
3435 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3436 if self.take_rename(true, cx).is_some() {
3437 return;
3438 }
3439
3440 if let Some(context_menu) = self.context_menu.as_mut() {
3441 if context_menu.select_prev(cx) {
3442 return;
3443 }
3444 }
3445
3446 if matches!(self.mode, EditorMode::SingleLine) {
3447 cx.propagate_action();
3448 return;
3449 }
3450
3451 self.move_selections(cx, |map, selection| {
3452 if !selection.is_empty() {
3453 selection.goal = SelectionGoal::None;
3454 }
3455 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3456 selection.collapse_to(cursor, goal);
3457 });
3458 }
3459
3460 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3461 self.move_selection_heads(cx, movement::up)
3462 }
3463
3464 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3465 self.take_rename(true, cx);
3466
3467 if let Some(context_menu) = self.context_menu.as_mut() {
3468 if context_menu.select_next(cx) {
3469 return;
3470 }
3471 }
3472
3473 if matches!(self.mode, EditorMode::SingleLine) {
3474 cx.propagate_action();
3475 return;
3476 }
3477
3478 self.move_selections(cx, |map, selection| {
3479 if !selection.is_empty() {
3480 selection.goal = SelectionGoal::None;
3481 }
3482 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3483 selection.collapse_to(cursor, goal);
3484 });
3485 }
3486
3487 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3488 self.move_selection_heads(cx, movement::down)
3489 }
3490
3491 pub fn move_to_previous_word_start(
3492 &mut self,
3493 _: &MoveToPreviousWordStart,
3494 cx: &mut ViewContext<Self>,
3495 ) {
3496 self.move_cursors(cx, |map, head, _| {
3497 (
3498 movement::previous_word_start(map, head),
3499 SelectionGoal::None,
3500 )
3501 });
3502 }
3503
3504 pub fn select_to_previous_word_start(
3505 &mut self,
3506 _: &SelectToPreviousWordBoundary,
3507 cx: &mut ViewContext<Self>,
3508 ) {
3509 self.move_selection_heads(cx, |map, head, _| {
3510 (
3511 movement::previous_word_start(map, head),
3512 SelectionGoal::None,
3513 )
3514 });
3515 }
3516
3517 pub fn delete_to_previous_word_start(
3518 &mut self,
3519 _: &DeleteToPreviousWordBoundary,
3520 cx: &mut ViewContext<Self>,
3521 ) {
3522 self.transact(cx, |this, cx| {
3523 this.move_selections(cx, |map, selection| {
3524 if selection.is_empty() {
3525 let cursor = movement::previous_word_start(map, selection.head());
3526 selection.set_head(cursor, SelectionGoal::None);
3527 }
3528 });
3529 this.insert("", cx);
3530 });
3531 }
3532
3533 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3534 self.move_cursors(cx, |map, head, _| {
3535 (movement::next_word_end(map, head), SelectionGoal::None)
3536 });
3537 }
3538
3539 pub fn select_to_next_word_end(
3540 &mut self,
3541 _: &SelectToNextWordBoundary,
3542 cx: &mut ViewContext<Self>,
3543 ) {
3544 self.move_selection_heads(cx, |map, head, _| {
3545 (movement::next_word_end(map, head), SelectionGoal::None)
3546 });
3547 }
3548
3549 pub fn delete_to_next_word_end(
3550 &mut self,
3551 _: &DeleteToNextWordBoundary,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 self.transact(cx, |this, cx| {
3555 this.move_selections(cx, |map, selection| {
3556 if selection.is_empty() {
3557 let cursor = movement::next_word_end(map, selection.head());
3558 selection.set_head(cursor, SelectionGoal::None);
3559 }
3560 });
3561 this.insert("", cx);
3562 });
3563 }
3564
3565 pub fn move_to_beginning_of_line(
3566 &mut self,
3567 _: &MoveToBeginningOfLine,
3568 cx: &mut ViewContext<Self>,
3569 ) {
3570 self.move_cursors(cx, |map, head, _| {
3571 (
3572 movement::line_beginning(map, head, true),
3573 SelectionGoal::None,
3574 )
3575 });
3576 }
3577
3578 pub fn select_to_beginning_of_line(
3579 &mut self,
3580 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3581 cx: &mut ViewContext<Self>,
3582 ) {
3583 self.move_selection_heads(cx, |map, head, _| {
3584 (
3585 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3586 SelectionGoal::None,
3587 )
3588 });
3589 }
3590
3591 pub fn delete_to_beginning_of_line(
3592 &mut self,
3593 _: &DeleteToBeginningOfLine,
3594 cx: &mut ViewContext<Self>,
3595 ) {
3596 self.transact(cx, |this, cx| {
3597 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3598 this.backspace(&Backspace, cx);
3599 });
3600 }
3601
3602 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3603 self.move_cursors(cx, |map, head, _| {
3604 (movement::line_end(map, head, true), SelectionGoal::None)
3605 });
3606 }
3607
3608 pub fn select_to_end_of_line(
3609 &mut self,
3610 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3611 cx: &mut ViewContext<Self>,
3612 ) {
3613 self.move_selection_heads(cx, |map, head, _| {
3614 (
3615 movement::line_end(map, head, *stop_at_soft_boundaries),
3616 SelectionGoal::None,
3617 )
3618 });
3619 }
3620
3621 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3622 self.transact(cx, |this, cx| {
3623 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3624 this.delete(&Delete, cx);
3625 });
3626 }
3627
3628 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3629 self.transact(cx, |this, cx| {
3630 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3631 this.cut(&Cut, cx);
3632 });
3633 }
3634
3635 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3636 if matches!(self.mode, EditorMode::SingleLine) {
3637 cx.propagate_action();
3638 return;
3639 }
3640
3641 let selection = Selection {
3642 id: post_inc(&mut self.next_selection_id),
3643 start: 0,
3644 end: 0,
3645 reversed: false,
3646 goal: SelectionGoal::None,
3647 };
3648 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3649 }
3650
3651 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3652 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3653 selection.set_head(Point::zero(), SelectionGoal::None);
3654 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3655 }
3656
3657 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3658 if matches!(self.mode, EditorMode::SingleLine) {
3659 cx.propagate_action();
3660 return;
3661 }
3662
3663 let cursor = self.buffer.read(cx).read(cx).len();
3664 let selection = Selection {
3665 id: post_inc(&mut self.next_selection_id),
3666 start: cursor,
3667 end: cursor,
3668 reversed: false,
3669 goal: SelectionGoal::None,
3670 };
3671 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3672 }
3673
3674 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3675 self.nav_history = nav_history;
3676 }
3677
3678 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3679 self.nav_history.as_ref()
3680 }
3681
3682 fn push_to_nav_history(
3683 &self,
3684 position: Anchor,
3685 new_position: Option<Point>,
3686 cx: &mut ViewContext<Self>,
3687 ) {
3688 if let Some(nav_history) = &self.nav_history {
3689 let buffer = self.buffer.read(cx).read(cx);
3690 let offset = position.to_offset(&buffer);
3691 let point = position.to_point(&buffer);
3692 drop(buffer);
3693
3694 if let Some(new_position) = new_position {
3695 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3696 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3697 return;
3698 }
3699 }
3700
3701 nav_history.push(Some(NavigationData {
3702 anchor: position,
3703 offset,
3704 }));
3705 }
3706 }
3707
3708 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3709 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3710 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3711 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3712 }
3713
3714 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3715 let selection = Selection {
3716 id: post_inc(&mut self.next_selection_id),
3717 start: 0,
3718 end: self.buffer.read(cx).read(cx).len(),
3719 reversed: false,
3720 goal: SelectionGoal::None,
3721 };
3722 self.update_selections(vec![selection], None, cx);
3723 }
3724
3725 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3726 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3727 let mut selections = self.local_selections::<Point>(cx);
3728 let max_point = display_map.buffer_snapshot.max_point();
3729 for selection in &mut selections {
3730 let rows = selection.spanned_rows(true, &display_map);
3731 selection.start = Point::new(rows.start, 0);
3732 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3733 selection.reversed = false;
3734 }
3735 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3736 }
3737
3738 pub fn split_selection_into_lines(
3739 &mut self,
3740 _: &SplitSelectionIntoLines,
3741 cx: &mut ViewContext<Self>,
3742 ) {
3743 let mut to_unfold = Vec::new();
3744 let mut new_selections = Vec::new();
3745 {
3746 let selections = self.local_selections::<Point>(cx);
3747 let buffer = self.buffer.read(cx).read(cx);
3748 for selection in selections {
3749 for row in selection.start.row..selection.end.row {
3750 let cursor = Point::new(row, buffer.line_len(row));
3751 new_selections.push(Selection {
3752 id: post_inc(&mut self.next_selection_id),
3753 start: cursor,
3754 end: cursor,
3755 reversed: false,
3756 goal: SelectionGoal::None,
3757 });
3758 }
3759 new_selections.push(Selection {
3760 id: selection.id,
3761 start: selection.end,
3762 end: selection.end,
3763 reversed: false,
3764 goal: SelectionGoal::None,
3765 });
3766 to_unfold.push(selection.start..selection.end);
3767 }
3768 }
3769 self.unfold_ranges(to_unfold, true, cx);
3770 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3771 }
3772
3773 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3774 self.add_selection(true, cx);
3775 }
3776
3777 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3778 self.add_selection(false, cx);
3779 }
3780
3781 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3782 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3783 let mut selections = self.local_selections::<Point>(cx);
3784 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3785 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3786 let range = oldest_selection.display_range(&display_map).sorted();
3787 let columns = cmp::min(range.start.column(), range.end.column())
3788 ..cmp::max(range.start.column(), range.end.column());
3789
3790 selections.clear();
3791 let mut stack = Vec::new();
3792 for row in range.start.row()..=range.end.row() {
3793 if let Some(selection) = self.build_columnar_selection(
3794 &display_map,
3795 row,
3796 &columns,
3797 oldest_selection.reversed,
3798 ) {
3799 stack.push(selection.id);
3800 selections.push(selection);
3801 }
3802 }
3803
3804 if above {
3805 stack.reverse();
3806 }
3807
3808 AddSelectionsState { above, stack }
3809 });
3810
3811 let last_added_selection = *state.stack.last().unwrap();
3812 let mut new_selections = Vec::new();
3813 if above == state.above {
3814 let end_row = if above {
3815 0
3816 } else {
3817 display_map.max_point().row()
3818 };
3819
3820 'outer: for selection in selections {
3821 if selection.id == last_added_selection {
3822 let range = selection.display_range(&display_map).sorted();
3823 debug_assert_eq!(range.start.row(), range.end.row());
3824 let mut row = range.start.row();
3825 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3826 {
3827 start..end
3828 } else {
3829 cmp::min(range.start.column(), range.end.column())
3830 ..cmp::max(range.start.column(), range.end.column())
3831 };
3832
3833 while row != end_row {
3834 if above {
3835 row -= 1;
3836 } else {
3837 row += 1;
3838 }
3839
3840 if let Some(new_selection) = self.build_columnar_selection(
3841 &display_map,
3842 row,
3843 &columns,
3844 selection.reversed,
3845 ) {
3846 state.stack.push(new_selection.id);
3847 if above {
3848 new_selections.push(new_selection);
3849 new_selections.push(selection);
3850 } else {
3851 new_selections.push(selection);
3852 new_selections.push(new_selection);
3853 }
3854
3855 continue 'outer;
3856 }
3857 }
3858 }
3859
3860 new_selections.push(selection);
3861 }
3862 } else {
3863 new_selections = selections;
3864 new_selections.retain(|s| s.id != last_added_selection);
3865 state.stack.pop();
3866 }
3867
3868 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3869 if state.stack.len() > 1 {
3870 self.add_selections_state = Some(state);
3871 }
3872 }
3873
3874 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3875 let replace_newest = action.0;
3876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3877 let buffer = &display_map.buffer_snapshot;
3878 let mut selections = self.local_selections::<usize>(cx);
3879 if let Some(mut select_next_state) = self.select_next_state.take() {
3880 let query = &select_next_state.query;
3881 if !select_next_state.done {
3882 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3883 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3884 let mut next_selected_range = None;
3885
3886 let bytes_after_last_selection =
3887 buffer.bytes_in_range(last_selection.end..buffer.len());
3888 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3889 let query_matches = query
3890 .stream_find_iter(bytes_after_last_selection)
3891 .map(|result| (last_selection.end, result))
3892 .chain(
3893 query
3894 .stream_find_iter(bytes_before_first_selection)
3895 .map(|result| (0, result)),
3896 );
3897 for (start_offset, query_match) in query_matches {
3898 let query_match = query_match.unwrap(); // can only fail due to I/O
3899 let offset_range =
3900 start_offset + query_match.start()..start_offset + query_match.end();
3901 let display_range = offset_range.start.to_display_point(&display_map)
3902 ..offset_range.end.to_display_point(&display_map);
3903
3904 if !select_next_state.wordwise
3905 || (!movement::is_inside_word(&display_map, display_range.start)
3906 && !movement::is_inside_word(&display_map, display_range.end))
3907 {
3908 next_selected_range = Some(offset_range);
3909 break;
3910 }
3911 }
3912
3913 if let Some(next_selected_range) = next_selected_range {
3914 if replace_newest {
3915 if let Some(newest_id) =
3916 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3917 {
3918 selections.retain(|s| s.id != newest_id);
3919 }
3920 }
3921 selections.push(Selection {
3922 id: post_inc(&mut self.next_selection_id),
3923 start: next_selected_range.start,
3924 end: next_selected_range.end,
3925 reversed: false,
3926 goal: SelectionGoal::None,
3927 });
3928 self.unfold_ranges([next_selected_range], false, cx);
3929 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3930 } else {
3931 select_next_state.done = true;
3932 }
3933 }
3934
3935 self.select_next_state = Some(select_next_state);
3936 } else if selections.len() == 1 {
3937 let selection = selections.last_mut().unwrap();
3938 if selection.start == selection.end {
3939 let word_range = movement::surrounding_word(
3940 &display_map,
3941 selection.start.to_display_point(&display_map),
3942 );
3943 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3944 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3945 selection.goal = SelectionGoal::None;
3946 selection.reversed = false;
3947
3948 let query = buffer
3949 .text_for_range(selection.start..selection.end)
3950 .collect::<String>();
3951 let select_state = SelectNextState {
3952 query: AhoCorasick::new_auto_configured(&[query]),
3953 wordwise: true,
3954 done: false,
3955 };
3956 self.unfold_ranges([selection.start..selection.end], false, cx);
3957 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3958 self.select_next_state = Some(select_state);
3959 } else {
3960 let query = buffer
3961 .text_for_range(selection.start..selection.end)
3962 .collect::<String>();
3963 self.select_next_state = Some(SelectNextState {
3964 query: AhoCorasick::new_auto_configured(&[query]),
3965 wordwise: false,
3966 done: false,
3967 });
3968 self.select_next(action, cx);
3969 }
3970 }
3971 }
3972
3973 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3974 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3975 // as that portion won't be used for detecting if a line is a comment.
3976 let full_comment_prefix =
3977 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3978 prefix.to_string()
3979 } else {
3980 return;
3981 };
3982 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3983 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3984
3985 self.transact(cx, |this, cx| {
3986 let mut selections = this.local_selections::<Point>(cx);
3987 let mut all_selection_lines_are_comments = true;
3988 let mut edit_ranges = Vec::new();
3989 let mut last_toggled_row = None;
3990 this.buffer.update(cx, |buffer, cx| {
3991 for selection in &mut selections {
3992 edit_ranges.clear();
3993 let snapshot = buffer.snapshot(cx);
3994
3995 let end_row =
3996 if selection.end.row > selection.start.row && selection.end.column == 0 {
3997 selection.end.row
3998 } else {
3999 selection.end.row + 1
4000 };
4001
4002 for row in selection.start.row..end_row {
4003 // If multiple selections contain a given row, avoid processing that
4004 // row more than once.
4005 if last_toggled_row == Some(row) {
4006 continue;
4007 } else {
4008 last_toggled_row = Some(row);
4009 }
4010
4011 if snapshot.is_line_blank(row) {
4012 continue;
4013 }
4014
4015 let start = Point::new(row, snapshot.indent_column_for_line(row));
4016 let mut line_bytes = snapshot
4017 .bytes_in_range(start..snapshot.max_point())
4018 .flatten()
4019 .copied();
4020
4021 // If this line currently begins with the line comment prefix, then record
4022 // the range containing the prefix.
4023 if all_selection_lines_are_comments
4024 && line_bytes
4025 .by_ref()
4026 .take(comment_prefix.len())
4027 .eq(comment_prefix.bytes())
4028 {
4029 // Include any whitespace that matches the comment prefix.
4030 let matching_whitespace_len = line_bytes
4031 .zip(comment_prefix_whitespace.bytes())
4032 .take_while(|(a, b)| a == b)
4033 .count()
4034 as u32;
4035 let end = Point::new(
4036 row,
4037 start.column
4038 + comment_prefix.len() as u32
4039 + matching_whitespace_len,
4040 );
4041 edit_ranges.push(start..end);
4042 }
4043 // If this line does not begin with the line comment prefix, then record
4044 // the position where the prefix should be inserted.
4045 else {
4046 all_selection_lines_are_comments = false;
4047 edit_ranges.push(start..start);
4048 }
4049 }
4050
4051 if !edit_ranges.is_empty() {
4052 if all_selection_lines_are_comments {
4053 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4054 } else {
4055 let min_column =
4056 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4057 let edit_ranges = edit_ranges.iter().map(|range| {
4058 let position = Point::new(range.start.row, min_column);
4059 position..position
4060 });
4061 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4062 }
4063 }
4064 }
4065 });
4066
4067 this.update_selections(
4068 this.local_selections::<usize>(cx),
4069 Some(Autoscroll::Fit),
4070 cx,
4071 );
4072 });
4073 }
4074
4075 pub fn select_larger_syntax_node(
4076 &mut self,
4077 _: &SelectLargerSyntaxNode,
4078 cx: &mut ViewContext<Self>,
4079 ) {
4080 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4081 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4082 let buffer = self.buffer.read(cx).snapshot(cx);
4083
4084 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4085 let mut selected_larger_node = false;
4086 let new_selections = old_selections
4087 .iter()
4088 .map(|selection| {
4089 let old_range = selection.start..selection.end;
4090 let mut new_range = old_range.clone();
4091 while let Some(containing_range) =
4092 buffer.range_for_syntax_ancestor(new_range.clone())
4093 {
4094 new_range = containing_range;
4095 if !display_map.intersects_fold(new_range.start)
4096 && !display_map.intersects_fold(new_range.end)
4097 {
4098 break;
4099 }
4100 }
4101
4102 selected_larger_node |= new_range != old_range;
4103 Selection {
4104 id: selection.id,
4105 start: new_range.start,
4106 end: new_range.end,
4107 goal: SelectionGoal::None,
4108 reversed: selection.reversed,
4109 }
4110 })
4111 .collect::<Vec<_>>();
4112
4113 if selected_larger_node {
4114 stack.push(old_selections);
4115 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4116 }
4117 self.select_larger_syntax_node_stack = stack;
4118 }
4119
4120 pub fn select_smaller_syntax_node(
4121 &mut self,
4122 _: &SelectSmallerSyntaxNode,
4123 cx: &mut ViewContext<Self>,
4124 ) {
4125 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4126 if let Some(selections) = stack.pop() {
4127 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4128 }
4129 self.select_larger_syntax_node_stack = stack;
4130 }
4131
4132 pub fn move_to_enclosing_bracket(
4133 &mut self,
4134 _: &MoveToEnclosingBracket,
4135 cx: &mut ViewContext<Self>,
4136 ) {
4137 let mut selections = self.local_selections::<usize>(cx);
4138 let buffer = self.buffer.read(cx).snapshot(cx);
4139 for selection in &mut selections {
4140 if let Some((open_range, close_range)) =
4141 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4142 {
4143 let close_range = close_range.to_inclusive();
4144 let destination = if close_range.contains(&selection.start)
4145 && close_range.contains(&selection.end)
4146 {
4147 open_range.end
4148 } else {
4149 *close_range.start()
4150 };
4151 selection.start = destination;
4152 selection.end = destination;
4153 }
4154 }
4155
4156 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4157 }
4158
4159 pub fn go_to_diagnostic(
4160 &mut self,
4161 &GoToDiagnostic(direction): &GoToDiagnostic,
4162 cx: &mut ViewContext<Self>,
4163 ) {
4164 let buffer = self.buffer.read(cx).snapshot(cx);
4165 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4166 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4167 active_diagnostics
4168 .primary_range
4169 .to_offset(&buffer)
4170 .to_inclusive()
4171 });
4172 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4173 if active_primary_range.contains(&selection.head()) {
4174 *active_primary_range.end()
4175 } else {
4176 selection.head()
4177 }
4178 } else {
4179 selection.head()
4180 };
4181
4182 loop {
4183 let mut diagnostics = if direction == Direction::Prev {
4184 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4185 } else {
4186 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4187 };
4188 let group = diagnostics.find_map(|entry| {
4189 if entry.diagnostic.is_primary
4190 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4191 && !entry.range.is_empty()
4192 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4193 {
4194 Some((entry.range, entry.diagnostic.group_id))
4195 } else {
4196 None
4197 }
4198 });
4199
4200 if let Some((primary_range, group_id)) = group {
4201 self.activate_diagnostics(group_id, cx);
4202 self.update_selections(
4203 vec![Selection {
4204 id: selection.id,
4205 start: primary_range.start,
4206 end: primary_range.start,
4207 reversed: false,
4208 goal: SelectionGoal::None,
4209 }],
4210 Some(Autoscroll::Center),
4211 cx,
4212 );
4213 break;
4214 } else {
4215 // Cycle around to the start of the buffer, potentially moving back to the start of
4216 // the currently active diagnostic.
4217 active_primary_range.take();
4218 if direction == Direction::Prev {
4219 if search_start == buffer.len() {
4220 break;
4221 } else {
4222 search_start = buffer.len();
4223 }
4224 } else {
4225 if search_start == 0 {
4226 break;
4227 } else {
4228 search_start = 0;
4229 }
4230 }
4231 }
4232 }
4233 }
4234
4235 pub fn go_to_definition(
4236 workspace: &mut Workspace,
4237 _: &GoToDefinition,
4238 cx: &mut ViewContext<Workspace>,
4239 ) {
4240 let active_item = workspace.active_item(cx);
4241 let editor_handle = if let Some(editor) = active_item
4242 .as_ref()
4243 .and_then(|item| item.act_as::<Self>(cx))
4244 {
4245 editor
4246 } else {
4247 return;
4248 };
4249
4250 let editor = editor_handle.read(cx);
4251 let head = editor.newest_selection::<usize>(cx).head();
4252 let (buffer, head) =
4253 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4254 text_anchor
4255 } else {
4256 return;
4257 };
4258
4259 let project = workspace.project().clone();
4260 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4261 cx.spawn(|workspace, mut cx| async move {
4262 let definitions = definitions.await?;
4263 workspace.update(&mut cx, |workspace, cx| {
4264 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4265 for definition in definitions {
4266 let range = definition.range.to_offset(definition.buffer.read(cx));
4267
4268 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4269 target_editor_handle.update(cx, |target_editor, cx| {
4270 // When selecting a definition in a different buffer, disable the nav history
4271 // to avoid creating a history entry at the previous cursor location.
4272 if editor_handle != target_editor_handle {
4273 nav_history.borrow_mut().disable();
4274 }
4275 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4276 nav_history.borrow_mut().enable();
4277 });
4278 }
4279 });
4280
4281 Ok::<(), anyhow::Error>(())
4282 })
4283 .detach_and_log_err(cx);
4284 }
4285
4286 pub fn find_all_references(
4287 workspace: &mut Workspace,
4288 _: &FindAllReferences,
4289 cx: &mut ViewContext<Workspace>,
4290 ) -> Option<Task<Result<()>>> {
4291 let active_item = workspace.active_item(cx)?;
4292 let editor_handle = active_item.act_as::<Self>(cx)?;
4293
4294 let editor = editor_handle.read(cx);
4295 let head = editor.newest_selection::<usize>(cx).head();
4296 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4297 let replica_id = editor.replica_id(cx);
4298
4299 let project = workspace.project().clone();
4300 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4301 Some(cx.spawn(|workspace, mut cx| async move {
4302 let mut locations = references.await?;
4303 if locations.is_empty() {
4304 return Ok(());
4305 }
4306
4307 locations.sort_by_key(|location| location.buffer.id());
4308 let mut locations = locations.into_iter().peekable();
4309 let mut ranges_to_highlight = Vec::new();
4310
4311 let excerpt_buffer = cx.add_model(|cx| {
4312 let mut symbol_name = None;
4313 let mut multibuffer = MultiBuffer::new(replica_id);
4314 while let Some(location) = locations.next() {
4315 let buffer = location.buffer.read(cx);
4316 let mut ranges_for_buffer = Vec::new();
4317 let range = location.range.to_offset(buffer);
4318 ranges_for_buffer.push(range.clone());
4319 if symbol_name.is_none() {
4320 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4321 }
4322
4323 while let Some(next_location) = locations.peek() {
4324 if next_location.buffer == location.buffer {
4325 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4326 locations.next();
4327 } else {
4328 break;
4329 }
4330 }
4331
4332 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4333 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4334 location.buffer.clone(),
4335 ranges_for_buffer,
4336 1,
4337 cx,
4338 ));
4339 }
4340 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4341 });
4342
4343 workspace.update(&mut cx, |workspace, cx| {
4344 let editor =
4345 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4346 editor.update(cx, |editor, cx| {
4347 let color = editor.style(cx).highlighted_line_background;
4348 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4349 });
4350 workspace.add_item(Box::new(editor), cx);
4351 });
4352
4353 Ok(())
4354 }))
4355 }
4356
4357 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4358 use language::ToOffset as _;
4359
4360 let project = self.project.clone()?;
4361 let selection = self.newest_anchor_selection().clone();
4362 let (cursor_buffer, cursor_buffer_position) = self
4363 .buffer
4364 .read(cx)
4365 .text_anchor_for_position(selection.head(), cx)?;
4366 let (tail_buffer, _) = self
4367 .buffer
4368 .read(cx)
4369 .text_anchor_for_position(selection.tail(), cx)?;
4370 if tail_buffer != cursor_buffer {
4371 return None;
4372 }
4373
4374 let snapshot = cursor_buffer.read(cx).snapshot();
4375 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4376 let prepare_rename = project.update(cx, |project, cx| {
4377 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4378 });
4379
4380 Some(cx.spawn(|this, mut cx| async move {
4381 if let Some(rename_range) = prepare_rename.await? {
4382 let rename_buffer_range = rename_range.to_offset(&snapshot);
4383 let cursor_offset_in_rename_range =
4384 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4385
4386 this.update(&mut cx, |this, cx| {
4387 this.take_rename(false, cx);
4388 let style = this.style(cx);
4389 let buffer = this.buffer.read(cx).read(cx);
4390 let cursor_offset = selection.head().to_offset(&buffer);
4391 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4392 let rename_end = rename_start + rename_buffer_range.len();
4393 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4394 let mut old_highlight_id = None;
4395 let old_name = buffer
4396 .chunks(rename_start..rename_end, true)
4397 .map(|chunk| {
4398 if old_highlight_id.is_none() {
4399 old_highlight_id = chunk.syntax_highlight_id;
4400 }
4401 chunk.text
4402 })
4403 .collect();
4404
4405 drop(buffer);
4406
4407 // Position the selection in the rename editor so that it matches the current selection.
4408 this.show_local_selections = false;
4409 let rename_editor = cx.add_view(|cx| {
4410 let mut editor = Editor::single_line(None, cx);
4411 if let Some(old_highlight_id) = old_highlight_id {
4412 editor.override_text_style =
4413 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4414 }
4415 editor
4416 .buffer
4417 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4418 editor.select_all(&SelectAll, cx);
4419 editor
4420 });
4421
4422 let ranges = this
4423 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4424 .into_iter()
4425 .flat_map(|(_, ranges)| ranges)
4426 .chain(
4427 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4428 .into_iter()
4429 .flat_map(|(_, ranges)| ranges),
4430 )
4431 .collect();
4432
4433 this.highlight_text::<Rename>(
4434 ranges,
4435 HighlightStyle {
4436 fade_out: Some(style.rename_fade),
4437 ..Default::default()
4438 },
4439 cx,
4440 );
4441 cx.focus(&rename_editor);
4442 let block_id = this.insert_blocks(
4443 [BlockProperties {
4444 position: range.start.clone(),
4445 height: 1,
4446 render: Arc::new({
4447 let editor = rename_editor.clone();
4448 move |cx: &BlockContext| {
4449 ChildView::new(editor.clone())
4450 .contained()
4451 .with_padding_left(cx.anchor_x)
4452 .boxed()
4453 }
4454 }),
4455 disposition: BlockDisposition::Below,
4456 }],
4457 cx,
4458 )[0];
4459 this.pending_rename = Some(RenameState {
4460 range,
4461 old_name,
4462 editor: rename_editor,
4463 block_id,
4464 });
4465 });
4466 }
4467
4468 Ok(())
4469 }))
4470 }
4471
4472 pub fn confirm_rename(
4473 workspace: &mut Workspace,
4474 _: &ConfirmRename,
4475 cx: &mut ViewContext<Workspace>,
4476 ) -> Option<Task<Result<()>>> {
4477 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4478
4479 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4480 let rename = editor.take_rename(false, cx)?;
4481 let buffer = editor.buffer.read(cx);
4482 let (start_buffer, start) =
4483 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4484 let (end_buffer, end) =
4485 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4486 if start_buffer == end_buffer {
4487 let new_name = rename.editor.read(cx).text(cx);
4488 Some((start_buffer, start..end, rename.old_name, new_name))
4489 } else {
4490 None
4491 }
4492 })?;
4493
4494 let rename = workspace.project().clone().update(cx, |project, cx| {
4495 project.perform_rename(
4496 buffer.clone(),
4497 range.start.clone(),
4498 new_name.clone(),
4499 true,
4500 cx,
4501 )
4502 });
4503
4504 Some(cx.spawn(|workspace, mut cx| async move {
4505 let project_transaction = rename.await?;
4506 Self::open_project_transaction(
4507 editor.clone(),
4508 workspace,
4509 project_transaction,
4510 format!("Rename: {} → {}", old_name, new_name),
4511 cx.clone(),
4512 )
4513 .await?;
4514
4515 editor.update(&mut cx, |editor, cx| {
4516 editor.refresh_document_highlights(cx);
4517 });
4518 Ok(())
4519 }))
4520 }
4521
4522 fn take_rename(
4523 &mut self,
4524 moving_cursor: bool,
4525 cx: &mut ViewContext<Self>,
4526 ) -> Option<RenameState> {
4527 let rename = self.pending_rename.take()?;
4528 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4529 self.clear_text_highlights::<Rename>(cx);
4530 self.show_local_selections = true;
4531
4532 if moving_cursor {
4533 let cursor_in_rename_editor =
4534 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4535
4536 // Update the selection to match the position of the selection inside
4537 // the rename editor.
4538 let snapshot = self.buffer.read(cx).read(cx);
4539 let rename_range = rename.range.to_offset(&snapshot);
4540 let cursor_in_editor = snapshot
4541 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4542 .min(rename_range.end);
4543 drop(snapshot);
4544
4545 self.update_selections(
4546 vec![Selection {
4547 id: self.newest_anchor_selection().id,
4548 start: cursor_in_editor,
4549 end: cursor_in_editor,
4550 reversed: false,
4551 goal: SelectionGoal::None,
4552 }],
4553 None,
4554 cx,
4555 );
4556 }
4557
4558 Some(rename)
4559 }
4560
4561 fn invalidate_rename_range(
4562 &mut self,
4563 buffer: &MultiBufferSnapshot,
4564 cx: &mut ViewContext<Self>,
4565 ) {
4566 if let Some(rename) = self.pending_rename.as_ref() {
4567 if self.selections.len() == 1 {
4568 let head = self.selections[0].head().to_offset(buffer);
4569 let range = rename.range.to_offset(buffer).to_inclusive();
4570 if range.contains(&head) {
4571 return;
4572 }
4573 }
4574 let rename = self.pending_rename.take().unwrap();
4575 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4576 self.clear_background_highlights::<Rename>(cx);
4577 }
4578 }
4579
4580 #[cfg(any(test, feature = "test-support"))]
4581 pub fn pending_rename(&self) -> Option<&RenameState> {
4582 self.pending_rename.as_ref()
4583 }
4584
4585 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4586 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4587 let buffer = self.buffer.read(cx).snapshot(cx);
4588 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4589 let is_valid = buffer
4590 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4591 .any(|entry| {
4592 entry.diagnostic.is_primary
4593 && !entry.range.is_empty()
4594 && entry.range.start == primary_range_start
4595 && entry.diagnostic.message == active_diagnostics.primary_message
4596 });
4597
4598 if is_valid != active_diagnostics.is_valid {
4599 active_diagnostics.is_valid = is_valid;
4600 let mut new_styles = HashMap::default();
4601 for (block_id, diagnostic) in &active_diagnostics.blocks {
4602 new_styles.insert(
4603 *block_id,
4604 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4605 );
4606 }
4607 self.display_map
4608 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4609 }
4610 }
4611 }
4612
4613 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4614 self.dismiss_diagnostics(cx);
4615 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4616 let buffer = self.buffer.read(cx).snapshot(cx);
4617
4618 let mut primary_range = None;
4619 let mut primary_message = None;
4620 let mut group_end = Point::zero();
4621 let diagnostic_group = buffer
4622 .diagnostic_group::<Point>(group_id)
4623 .map(|entry| {
4624 if entry.range.end > group_end {
4625 group_end = entry.range.end;
4626 }
4627 if entry.diagnostic.is_primary {
4628 primary_range = Some(entry.range.clone());
4629 primary_message = Some(entry.diagnostic.message.clone());
4630 }
4631 entry
4632 })
4633 .collect::<Vec<_>>();
4634 let primary_range = primary_range.unwrap();
4635 let primary_message = primary_message.unwrap();
4636 let primary_range =
4637 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4638
4639 let blocks = display_map
4640 .insert_blocks(
4641 diagnostic_group.iter().map(|entry| {
4642 let diagnostic = entry.diagnostic.clone();
4643 let message_height = diagnostic.message.lines().count() as u8;
4644 BlockProperties {
4645 position: buffer.anchor_after(entry.range.start),
4646 height: message_height,
4647 render: diagnostic_block_renderer(diagnostic, true),
4648 disposition: BlockDisposition::Below,
4649 }
4650 }),
4651 cx,
4652 )
4653 .into_iter()
4654 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4655 .collect();
4656
4657 Some(ActiveDiagnosticGroup {
4658 primary_range,
4659 primary_message,
4660 blocks,
4661 is_valid: true,
4662 })
4663 });
4664 }
4665
4666 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4667 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4668 self.display_map.update(cx, |display_map, cx| {
4669 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4670 });
4671 cx.notify();
4672 }
4673 }
4674
4675 fn build_columnar_selection(
4676 &mut self,
4677 display_map: &DisplaySnapshot,
4678 row: u32,
4679 columns: &Range<u32>,
4680 reversed: bool,
4681 ) -> Option<Selection<Point>> {
4682 let is_empty = columns.start == columns.end;
4683 let line_len = display_map.line_len(row);
4684 if columns.start < line_len || (is_empty && columns.start == line_len) {
4685 let start = DisplayPoint::new(row, columns.start);
4686 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4687 Some(Selection {
4688 id: post_inc(&mut self.next_selection_id),
4689 start: start.to_point(display_map),
4690 end: end.to_point(display_map),
4691 reversed,
4692 goal: SelectionGoal::ColumnRange {
4693 start: columns.start,
4694 end: columns.end,
4695 },
4696 })
4697 } else {
4698 None
4699 }
4700 }
4701
4702 pub fn local_selections_in_range(
4703 &self,
4704 range: Range<Anchor>,
4705 display_map: &DisplaySnapshot,
4706 ) -> Vec<Selection<Point>> {
4707 let buffer = &display_map.buffer_snapshot;
4708
4709 let start_ix = match self
4710 .selections
4711 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
4712 {
4713 Ok(ix) | Err(ix) => ix,
4714 };
4715 let end_ix = match self
4716 .selections
4717 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
4718 {
4719 Ok(ix) => ix + 1,
4720 Err(ix) => ix,
4721 };
4722
4723 fn point_selection(
4724 selection: &Selection<Anchor>,
4725 buffer: &MultiBufferSnapshot,
4726 ) -> Selection<Point> {
4727 let start = selection.start.to_point(&buffer);
4728 let end = selection.end.to_point(&buffer);
4729 Selection {
4730 id: selection.id,
4731 start,
4732 end,
4733 reversed: selection.reversed,
4734 goal: selection.goal,
4735 }
4736 }
4737
4738 self.selections[start_ix..end_ix]
4739 .iter()
4740 .chain(
4741 self.pending_selection
4742 .as_ref()
4743 .map(|pending| &pending.selection),
4744 )
4745 .map(|s| point_selection(s, &buffer))
4746 .collect()
4747 }
4748
4749 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4750 where
4751 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4752 {
4753 let buffer = self.buffer.read(cx).snapshot(cx);
4754 let mut selections = self
4755 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4756 .peekable();
4757
4758 let mut pending_selection = self.pending_selection::<D>(&buffer);
4759
4760 iter::from_fn(move || {
4761 if let Some(pending) = pending_selection.as_mut() {
4762 while let Some(next_selection) = selections.peek() {
4763 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4764 let next_selection = selections.next().unwrap();
4765 if next_selection.start < pending.start {
4766 pending.start = next_selection.start;
4767 }
4768 if next_selection.end > pending.end {
4769 pending.end = next_selection.end;
4770 }
4771 } else if next_selection.end < pending.start {
4772 return selections.next();
4773 } else {
4774 break;
4775 }
4776 }
4777
4778 pending_selection.take()
4779 } else {
4780 selections.next()
4781 }
4782 })
4783 .collect()
4784 }
4785
4786 fn resolve_selections<'a, D, I>(
4787 &self,
4788 selections: I,
4789 snapshot: &MultiBufferSnapshot,
4790 ) -> impl 'a + Iterator<Item = Selection<D>>
4791 where
4792 D: TextDimension + Ord + Sub<D, Output = D>,
4793 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4794 {
4795 let (to_summarize, selections) = selections.into_iter().tee();
4796 let mut summaries = snapshot
4797 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4798 .into_iter();
4799 selections.map(move |s| Selection {
4800 id: s.id,
4801 start: summaries.next().unwrap(),
4802 end: summaries.next().unwrap(),
4803 reversed: s.reversed,
4804 goal: s.goal,
4805 })
4806 }
4807
4808 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4809 &self,
4810 snapshot: &MultiBufferSnapshot,
4811 ) -> Option<Selection<D>> {
4812 self.pending_selection
4813 .as_ref()
4814 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4815 }
4816
4817 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4818 &self,
4819 selection: &Selection<Anchor>,
4820 buffer: &MultiBufferSnapshot,
4821 ) -> Selection<D> {
4822 Selection {
4823 id: selection.id,
4824 start: selection.start.summary::<D>(&buffer),
4825 end: selection.end.summary::<D>(&buffer),
4826 reversed: selection.reversed,
4827 goal: selection.goal,
4828 }
4829 }
4830
4831 fn selection_count<'a>(&self) -> usize {
4832 let mut count = self.selections.len();
4833 if self.pending_selection.is_some() {
4834 count += 1;
4835 }
4836 count
4837 }
4838
4839 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4840 &self,
4841 cx: &AppContext,
4842 ) -> Selection<D> {
4843 let snapshot = self.buffer.read(cx).read(cx);
4844 self.selections
4845 .iter()
4846 .min_by_key(|s| s.id)
4847 .map(|selection| self.resolve_selection(selection, &snapshot))
4848 .or_else(|| self.pending_selection(&snapshot))
4849 .unwrap()
4850 }
4851
4852 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4853 &self,
4854 cx: &AppContext,
4855 ) -> Selection<D> {
4856 self.resolve_selection(
4857 self.newest_anchor_selection(),
4858 &self.buffer.read(cx).read(cx),
4859 )
4860 }
4861
4862 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4863 &self,
4864 snapshot: &MultiBufferSnapshot,
4865 ) -> Selection<D> {
4866 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4867 }
4868
4869 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4870 self.pending_selection
4871 .as_ref()
4872 .map(|s| &s.selection)
4873 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4874 .unwrap()
4875 }
4876
4877 pub fn update_selections<T>(
4878 &mut self,
4879 mut selections: Vec<Selection<T>>,
4880 autoscroll: Option<Autoscroll>,
4881 cx: &mut ViewContext<Self>,
4882 ) where
4883 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4884 {
4885 let buffer = self.buffer.read(cx).snapshot(cx);
4886 selections.sort_unstable_by_key(|s| s.start);
4887
4888 // Merge overlapping selections.
4889 let mut i = 1;
4890 while i < selections.len() {
4891 if selections[i - 1].end >= selections[i].start {
4892 let removed = selections.remove(i);
4893 if removed.start < selections[i - 1].start {
4894 selections[i - 1].start = removed.start;
4895 }
4896 if removed.end > selections[i - 1].end {
4897 selections[i - 1].end = removed.end;
4898 }
4899 } else {
4900 i += 1;
4901 }
4902 }
4903
4904 if let Some(autoscroll) = autoscroll {
4905 self.request_autoscroll(autoscroll, cx);
4906 }
4907
4908 self.set_selections(
4909 Arc::from_iter(selections.into_iter().map(|selection| {
4910 let end_bias = if selection.end > selection.start {
4911 Bias::Left
4912 } else {
4913 Bias::Right
4914 };
4915 Selection {
4916 id: selection.id,
4917 start: buffer.anchor_after(selection.start),
4918 end: buffer.anchor_at(selection.end, end_bias),
4919 reversed: selection.reversed,
4920 goal: selection.goal,
4921 }
4922 })),
4923 None,
4924 true,
4925 cx,
4926 );
4927 }
4928
4929 pub fn set_selections_from_remote(
4930 &mut self,
4931 mut selections: Vec<Selection<Anchor>>,
4932 cx: &mut ViewContext<Self>,
4933 ) {
4934 let buffer = self.buffer.read(cx);
4935 let buffer = buffer.read(cx);
4936 selections.sort_by(|a, b| {
4937 a.start
4938 .cmp(&b.start, &*buffer)
4939 .then_with(|| b.end.cmp(&a.end, &*buffer))
4940 });
4941
4942 // Merge overlapping selections
4943 let mut i = 1;
4944 while i < selections.len() {
4945 if selections[i - 1]
4946 .end
4947 .cmp(&selections[i].start, &*buffer)
4948 .is_ge()
4949 {
4950 let removed = selections.remove(i);
4951 if removed
4952 .start
4953 .cmp(&selections[i - 1].start, &*buffer)
4954 .is_lt()
4955 {
4956 selections[i - 1].start = removed.start;
4957 }
4958 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
4959 selections[i - 1].end = removed.end;
4960 }
4961 } else {
4962 i += 1;
4963 }
4964 }
4965
4966 drop(buffer);
4967 self.set_selections(selections.into(), None, false, cx);
4968 }
4969
4970 /// Compute new ranges for any selections that were located in excerpts that have
4971 /// since been removed.
4972 ///
4973 /// Returns a `HashMap` indicating which selections whose former head position
4974 /// was no longer present. The keys of the map are selection ids. The values are
4975 /// the id of the new excerpt where the head of the selection has been moved.
4976 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4977 let snapshot = self.buffer.read(cx).read(cx);
4978 let mut selections_with_lost_position = HashMap::default();
4979
4980 let mut pending_selection = self.pending_selection.take();
4981 if let Some(pending) = pending_selection.as_mut() {
4982 let anchors =
4983 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
4984 let (_, start, kept_start) = anchors[0].clone();
4985 let (_, end, kept_end) = anchors[1].clone();
4986 let kept_head = if pending.selection.reversed {
4987 kept_start
4988 } else {
4989 kept_end
4990 };
4991 if !kept_head {
4992 selections_with_lost_position.insert(
4993 pending.selection.id,
4994 pending.selection.head().excerpt_id.clone(),
4995 );
4996 }
4997
4998 pending.selection.start = start;
4999 pending.selection.end = end;
5000 }
5001
5002 let anchors_with_status = snapshot.refresh_anchors(
5003 self.selections
5004 .iter()
5005 .flat_map(|selection| [&selection.start, &selection.end]),
5006 );
5007 self.selections = anchors_with_status
5008 .chunks(2)
5009 .map(|selection_anchors| {
5010 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5011 let (_, end, kept_end) = selection_anchors[1].clone();
5012 let selection = &self.selections[anchor_ix / 2];
5013 let kept_head = if selection.reversed {
5014 kept_start
5015 } else {
5016 kept_end
5017 };
5018 if !kept_head {
5019 selections_with_lost_position
5020 .insert(selection.id, selection.head().excerpt_id.clone());
5021 }
5022
5023 Selection {
5024 id: selection.id,
5025 start,
5026 end,
5027 reversed: selection.reversed,
5028 goal: selection.goal,
5029 }
5030 })
5031 .collect();
5032 drop(snapshot);
5033
5034 let new_selections = self.local_selections::<usize>(cx);
5035 if !new_selections.is_empty() {
5036 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5037 }
5038 self.pending_selection = pending_selection;
5039
5040 selections_with_lost_position
5041 }
5042
5043 fn set_selections(
5044 &mut self,
5045 selections: Arc<[Selection<Anchor>]>,
5046 pending_selection: Option<PendingSelection>,
5047 local: bool,
5048 cx: &mut ViewContext<Self>,
5049 ) {
5050 assert!(
5051 !selections.is_empty() || pending_selection.is_some(),
5052 "must have at least one selection"
5053 );
5054
5055 let old_cursor_position = self.newest_anchor_selection().head();
5056
5057 self.selections = selections;
5058 self.pending_selection = pending_selection;
5059 if self.focused && self.leader_replica_id.is_none() {
5060 self.buffer.update(cx, |buffer, cx| {
5061 buffer.set_active_selections(&self.selections, cx)
5062 });
5063 }
5064
5065 let display_map = self
5066 .display_map
5067 .update(cx, |display_map, cx| display_map.snapshot(cx));
5068 let buffer = &display_map.buffer_snapshot;
5069 self.add_selections_state = None;
5070 self.select_next_state = None;
5071 self.select_larger_syntax_node_stack.clear();
5072 self.autoclose_stack.invalidate(&self.selections, &buffer);
5073 self.snippet_stack.invalidate(&self.selections, &buffer);
5074 self.invalidate_rename_range(&buffer, cx);
5075
5076 let new_cursor_position = self.newest_anchor_selection().head();
5077
5078 self.push_to_nav_history(
5079 old_cursor_position.clone(),
5080 Some(new_cursor_position.to_point(&buffer)),
5081 cx,
5082 );
5083
5084 if local {
5085 let completion_menu = match self.context_menu.as_mut() {
5086 Some(ContextMenu::Completions(menu)) => Some(menu),
5087 _ => {
5088 self.context_menu.take();
5089 None
5090 }
5091 };
5092
5093 if let Some(completion_menu) = completion_menu {
5094 let cursor_position = new_cursor_position.to_offset(&buffer);
5095 let (word_range, kind) =
5096 buffer.surrounding_word(completion_menu.initial_position.clone());
5097 if kind == Some(CharKind::Word)
5098 && word_range.to_inclusive().contains(&cursor_position)
5099 {
5100 let query = Self::completion_query(&buffer, cursor_position);
5101 cx.background()
5102 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5103 self.show_completions(&ShowCompletions, cx);
5104 } else {
5105 self.hide_context_menu(cx);
5106 }
5107 }
5108
5109 if old_cursor_position.to_display_point(&display_map).row()
5110 != new_cursor_position.to_display_point(&display_map).row()
5111 {
5112 self.available_code_actions.take();
5113 }
5114 self.refresh_code_actions(cx);
5115 self.refresh_document_highlights(cx);
5116 }
5117
5118 self.pause_cursor_blinking(cx);
5119 cx.emit(Event::SelectionsChanged { local });
5120 }
5121
5122 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5123 self.autoscroll_request = Some((autoscroll, true));
5124 cx.notify();
5125 }
5126
5127 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5128 self.autoscroll_request = Some((autoscroll, false));
5129 cx.notify();
5130 }
5131
5132 pub fn transact(
5133 &mut self,
5134 cx: &mut ViewContext<Self>,
5135 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5136 ) {
5137 self.start_transaction_at(Instant::now(), cx);
5138 update(self, cx);
5139 self.end_transaction_at(Instant::now(), cx);
5140 }
5141
5142 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5143 self.end_selection(cx);
5144 if let Some(tx_id) = self
5145 .buffer
5146 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5147 {
5148 self.selection_history
5149 .insert(tx_id, (self.selections.clone(), None));
5150 }
5151 }
5152
5153 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5154 if let Some(tx_id) = self
5155 .buffer
5156 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5157 {
5158 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5159 *end_selections = Some(self.selections.clone());
5160 } else {
5161 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5162 }
5163
5164 cx.emit(Event::Edited);
5165 }
5166 }
5167
5168 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5169 log::info!("Editor::page_up");
5170 }
5171
5172 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5173 log::info!("Editor::page_down");
5174 }
5175
5176 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5177 let mut fold_ranges = Vec::new();
5178
5179 let selections = self.local_selections::<Point>(cx);
5180 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5181 for selection in selections {
5182 let range = selection.display_range(&display_map).sorted();
5183 let buffer_start_row = range.start.to_point(&display_map).row;
5184
5185 for row in (0..=range.end.row()).rev() {
5186 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5187 let fold_range = self.foldable_range_for_line(&display_map, row);
5188 if fold_range.end.row >= buffer_start_row {
5189 fold_ranges.push(fold_range);
5190 if row <= range.start.row() {
5191 break;
5192 }
5193 }
5194 }
5195 }
5196 }
5197
5198 self.fold_ranges(fold_ranges, cx);
5199 }
5200
5201 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
5202 let selections = self.local_selections::<Point>(cx);
5203 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5204 let buffer = &display_map.buffer_snapshot;
5205 let ranges = selections
5206 .iter()
5207 .map(|s| {
5208 let range = s.display_range(&display_map).sorted();
5209 let mut start = range.start.to_point(&display_map);
5210 let mut end = range.end.to_point(&display_map);
5211 start.column = 0;
5212 end.column = buffer.line_len(end.row);
5213 start..end
5214 })
5215 .collect::<Vec<_>>();
5216 self.unfold_ranges(ranges, true, cx);
5217 }
5218
5219 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5220 let max_point = display_map.max_point();
5221 if display_row >= max_point.row() {
5222 false
5223 } else {
5224 let (start_indent, is_blank) = display_map.line_indent(display_row);
5225 if is_blank {
5226 false
5227 } else {
5228 for display_row in display_row + 1..=max_point.row() {
5229 let (indent, is_blank) = display_map.line_indent(display_row);
5230 if !is_blank {
5231 return indent > start_indent;
5232 }
5233 }
5234 false
5235 }
5236 }
5237 }
5238
5239 fn foldable_range_for_line(
5240 &self,
5241 display_map: &DisplaySnapshot,
5242 start_row: u32,
5243 ) -> Range<Point> {
5244 let max_point = display_map.max_point();
5245
5246 let (start_indent, _) = display_map.line_indent(start_row);
5247 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5248 let mut end = None;
5249 for row in start_row + 1..=max_point.row() {
5250 let (indent, is_blank) = display_map.line_indent(row);
5251 if !is_blank && indent <= start_indent {
5252 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5253 break;
5254 }
5255 }
5256
5257 let end = end.unwrap_or(max_point);
5258 return start.to_point(display_map)..end.to_point(display_map);
5259 }
5260
5261 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5262 let selections = self.local_selections::<Point>(cx);
5263 let ranges = selections.into_iter().map(|s| s.start..s.end);
5264 self.fold_ranges(ranges, cx);
5265 }
5266
5267 pub fn fold_ranges<T: ToOffset>(
5268 &mut self,
5269 ranges: impl IntoIterator<Item = Range<T>>,
5270 cx: &mut ViewContext<Self>,
5271 ) {
5272 let mut ranges = ranges.into_iter().peekable();
5273 if ranges.peek().is_some() {
5274 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5275 self.request_autoscroll(Autoscroll::Fit, cx);
5276 cx.notify();
5277 }
5278 }
5279
5280 pub fn unfold_ranges<T: ToOffset>(
5281 &mut self,
5282 ranges: impl IntoIterator<Item = Range<T>>,
5283 inclusive: bool,
5284 cx: &mut ViewContext<Self>,
5285 ) {
5286 let mut ranges = ranges.into_iter().peekable();
5287 if ranges.peek().is_some() {
5288 self.display_map
5289 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
5290 self.request_autoscroll(Autoscroll::Fit, cx);
5291 cx.notify();
5292 }
5293 }
5294
5295 pub fn insert_blocks(
5296 &mut self,
5297 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5298 cx: &mut ViewContext<Self>,
5299 ) -> Vec<BlockId> {
5300 let blocks = self
5301 .display_map
5302 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5303 self.request_autoscroll(Autoscroll::Fit, cx);
5304 blocks
5305 }
5306
5307 pub fn replace_blocks(
5308 &mut self,
5309 blocks: HashMap<BlockId, RenderBlock>,
5310 cx: &mut ViewContext<Self>,
5311 ) {
5312 self.display_map
5313 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5314 self.request_autoscroll(Autoscroll::Fit, cx);
5315 }
5316
5317 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5318 self.display_map.update(cx, |display_map, cx| {
5319 display_map.remove_blocks(block_ids, cx)
5320 });
5321 }
5322
5323 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5324 self.display_map
5325 .update(cx, |map, cx| map.snapshot(cx))
5326 .longest_row()
5327 }
5328
5329 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5330 self.display_map
5331 .update(cx, |map, cx| map.snapshot(cx))
5332 .max_point()
5333 }
5334
5335 pub fn text(&self, cx: &AppContext) -> String {
5336 self.buffer.read(cx).read(cx).text()
5337 }
5338
5339 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5340 self.transact(cx, |this, cx| {
5341 this.buffer
5342 .read(cx)
5343 .as_singleton()
5344 .expect("you can only call set_text on editors for singleton buffers")
5345 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5346 });
5347 }
5348
5349 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5350 self.display_map
5351 .update(cx, |map, cx| map.snapshot(cx))
5352 .text()
5353 }
5354
5355 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5356 let language = self.language(cx);
5357 let settings = cx.global::<Settings>();
5358 let mode = self
5359 .soft_wrap_mode_override
5360 .unwrap_or_else(|| settings.soft_wrap(language));
5361 match mode {
5362 settings::SoftWrap::None => SoftWrap::None,
5363 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5364 settings::SoftWrap::PreferredLineLength => {
5365 SoftWrap::Column(settings.preferred_line_length(language))
5366 }
5367 }
5368 }
5369
5370 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5371 self.soft_wrap_mode_override = Some(mode);
5372 cx.notify();
5373 }
5374
5375 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5376 self.display_map
5377 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5378 }
5379
5380 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5381 self.highlighted_rows = rows;
5382 }
5383
5384 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5385 self.highlighted_rows.clone()
5386 }
5387
5388 pub fn highlight_background<T: 'static>(
5389 &mut self,
5390 ranges: Vec<Range<Anchor>>,
5391 color: Color,
5392 cx: &mut ViewContext<Self>,
5393 ) {
5394 self.background_highlights
5395 .insert(TypeId::of::<T>(), (color, ranges));
5396 cx.notify();
5397 }
5398
5399 pub fn clear_background_highlights<T: 'static>(
5400 &mut self,
5401 cx: &mut ViewContext<Self>,
5402 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5403 cx.notify();
5404 self.background_highlights.remove(&TypeId::of::<T>())
5405 }
5406
5407 #[cfg(feature = "test-support")]
5408 pub fn all_background_highlights(
5409 &mut self,
5410 cx: &mut ViewContext<Self>,
5411 ) -> Vec<(Range<DisplayPoint>, Color)> {
5412 let snapshot = self.snapshot(cx);
5413 let buffer = &snapshot.buffer_snapshot;
5414 let start = buffer.anchor_before(0);
5415 let end = buffer.anchor_after(buffer.len());
5416 self.background_highlights_in_range(start..end, &snapshot)
5417 }
5418
5419 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5420 self.background_highlights
5421 .get(&TypeId::of::<T>())
5422 .map(|(color, ranges)| (*color, ranges.as_slice()))
5423 }
5424
5425 pub fn background_highlights_in_range(
5426 &self,
5427 search_range: Range<Anchor>,
5428 display_snapshot: &DisplaySnapshot,
5429 ) -> Vec<(Range<DisplayPoint>, Color)> {
5430 let mut results = Vec::new();
5431 let buffer = &display_snapshot.buffer_snapshot;
5432 for (color, ranges) in self.background_highlights.values() {
5433 let start_ix = match ranges.binary_search_by(|probe| {
5434 let cmp = probe.end.cmp(&search_range.start, &buffer);
5435 if cmp.is_gt() {
5436 Ordering::Greater
5437 } else {
5438 Ordering::Less
5439 }
5440 }) {
5441 Ok(i) | Err(i) => i,
5442 };
5443 for range in &ranges[start_ix..] {
5444 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5445 break;
5446 }
5447 let start = range
5448 .start
5449 .to_point(buffer)
5450 .to_display_point(display_snapshot);
5451 let end = range
5452 .end
5453 .to_point(buffer)
5454 .to_display_point(display_snapshot);
5455 results.push((start..end, *color))
5456 }
5457 }
5458 results
5459 }
5460
5461 pub fn highlight_text<T: 'static>(
5462 &mut self,
5463 ranges: Vec<Range<Anchor>>,
5464 style: HighlightStyle,
5465 cx: &mut ViewContext<Self>,
5466 ) {
5467 self.display_map.update(cx, |map, _| {
5468 map.highlight_text(TypeId::of::<T>(), ranges, style)
5469 });
5470 cx.notify();
5471 }
5472
5473 pub fn clear_text_highlights<T: 'static>(
5474 &mut self,
5475 cx: &mut ViewContext<Self>,
5476 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5477 cx.notify();
5478 self.display_map
5479 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5480 }
5481
5482 fn next_blink_epoch(&mut self) -> usize {
5483 self.blink_epoch += 1;
5484 self.blink_epoch
5485 }
5486
5487 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5488 if !self.focused {
5489 return;
5490 }
5491
5492 self.show_local_cursors = true;
5493 cx.notify();
5494
5495 let epoch = self.next_blink_epoch();
5496 cx.spawn(|this, mut cx| {
5497 let this = this.downgrade();
5498 async move {
5499 Timer::after(CURSOR_BLINK_INTERVAL).await;
5500 if let Some(this) = this.upgrade(&cx) {
5501 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5502 }
5503 }
5504 })
5505 .detach();
5506 }
5507
5508 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5509 if epoch == self.blink_epoch {
5510 self.blinking_paused = false;
5511 self.blink_cursors(epoch, cx);
5512 }
5513 }
5514
5515 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5516 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5517 self.show_local_cursors = !self.show_local_cursors;
5518 cx.notify();
5519
5520 let epoch = self.next_blink_epoch();
5521 cx.spawn(|this, mut cx| {
5522 let this = this.downgrade();
5523 async move {
5524 Timer::after(CURSOR_BLINK_INTERVAL).await;
5525 if let Some(this) = this.upgrade(&cx) {
5526 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5527 }
5528 }
5529 })
5530 .detach();
5531 }
5532 }
5533
5534 pub fn show_local_cursors(&self) -> bool {
5535 self.show_local_cursors && self.focused
5536 }
5537
5538 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5539 cx.notify();
5540 }
5541
5542 fn on_buffer_event(
5543 &mut self,
5544 _: ModelHandle<MultiBuffer>,
5545 event: &language::Event,
5546 cx: &mut ViewContext<Self>,
5547 ) {
5548 match event {
5549 language::Event::Edited => {
5550 self.refresh_active_diagnostics(cx);
5551 self.refresh_code_actions(cx);
5552 cx.emit(Event::BufferEdited);
5553 }
5554 language::Event::Dirtied => cx.emit(Event::Dirtied),
5555 language::Event::Saved => cx.emit(Event::Saved),
5556 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5557 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5558 language::Event::Closed => cx.emit(Event::Closed),
5559 language::Event::DiagnosticsUpdated => {
5560 self.refresh_active_diagnostics(cx);
5561 }
5562 _ => {}
5563 }
5564 }
5565
5566 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5567 cx.notify();
5568 }
5569
5570 pub fn set_searchable(&mut self, searchable: bool) {
5571 self.searchable = searchable;
5572 }
5573
5574 pub fn searchable(&self) -> bool {
5575 self.searchable
5576 }
5577
5578 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5579 let active_item = workspace.active_item(cx);
5580 let editor_handle = if let Some(editor) = active_item
5581 .as_ref()
5582 .and_then(|item| item.act_as::<Self>(cx))
5583 {
5584 editor
5585 } else {
5586 cx.propagate_action();
5587 return;
5588 };
5589
5590 let editor = editor_handle.read(cx);
5591 let buffer = editor.buffer.read(cx);
5592 if buffer.is_singleton() {
5593 cx.propagate_action();
5594 return;
5595 }
5596
5597 let mut new_selections_by_buffer = HashMap::default();
5598 for selection in editor.local_selections::<usize>(cx) {
5599 for (buffer, mut range) in
5600 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5601 {
5602 if selection.reversed {
5603 mem::swap(&mut range.start, &mut range.end);
5604 }
5605 new_selections_by_buffer
5606 .entry(buffer)
5607 .or_insert(Vec::new())
5608 .push(range)
5609 }
5610 }
5611
5612 editor_handle.update(cx, |editor, cx| {
5613 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5614 });
5615 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5616 nav_history.borrow_mut().disable();
5617
5618 // We defer the pane interaction because we ourselves are a workspace item
5619 // and activating a new item causes the pane to call a method on us reentrantly,
5620 // which panics if we're on the stack.
5621 cx.defer(move |workspace, cx| {
5622 workspace.activate_next_pane(cx);
5623
5624 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5625 let editor = workspace.open_project_item::<Self>(buffer, cx);
5626 editor.update(cx, |editor, cx| {
5627 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5628 });
5629 }
5630
5631 nav_history.borrow_mut().enable();
5632 });
5633 }
5634}
5635
5636impl EditorSnapshot {
5637 pub fn is_focused(&self) -> bool {
5638 self.is_focused
5639 }
5640
5641 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5642 self.placeholder_text.as_ref()
5643 }
5644
5645 pub fn scroll_position(&self) -> Vector2F {
5646 compute_scroll_position(
5647 &self.display_snapshot,
5648 self.scroll_position,
5649 &self.scroll_top_anchor,
5650 )
5651 }
5652}
5653
5654impl Deref for EditorSnapshot {
5655 type Target = DisplaySnapshot;
5656
5657 fn deref(&self) -> &Self::Target {
5658 &self.display_snapshot
5659 }
5660}
5661
5662fn compute_scroll_position(
5663 snapshot: &DisplaySnapshot,
5664 mut scroll_position: Vector2F,
5665 scroll_top_anchor: &Anchor,
5666) -> Vector2F {
5667 if *scroll_top_anchor != Anchor::min() {
5668 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5669 scroll_position.set_y(scroll_top + scroll_position.y());
5670 } else {
5671 scroll_position.set_y(0.);
5672 }
5673 scroll_position
5674}
5675
5676#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5677pub enum Event {
5678 Activate,
5679 BufferEdited,
5680 Edited,
5681 Blurred,
5682 Dirtied,
5683 Saved,
5684 TitleChanged,
5685 SelectionsChanged { local: bool },
5686 ScrollPositionChanged { local: bool },
5687 Closed,
5688}
5689
5690pub struct EditorFocused(pub ViewHandle<Editor>);
5691pub struct EditorBlurred(pub ViewHandle<Editor>);
5692pub struct EditorReleased(pub WeakViewHandle<Editor>);
5693
5694impl Entity for Editor {
5695 type Event = Event;
5696
5697 fn release(&mut self, cx: &mut MutableAppContext) {
5698 cx.emit_global(EditorReleased(self.handle.clone()));
5699 }
5700}
5701
5702impl View for Editor {
5703 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5704 let style = self.style(cx);
5705 self.display_map.update(cx, |map, cx| {
5706 map.set_font(style.text.font_id, style.text.font_size, cx)
5707 });
5708 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5709 }
5710
5711 fn ui_name() -> &'static str {
5712 "Editor"
5713 }
5714
5715 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5716 let focused_event = EditorFocused(cx.handle());
5717 cx.emit_global(focused_event);
5718 if let Some(rename) = self.pending_rename.as_ref() {
5719 cx.focus(&rename.editor);
5720 } else {
5721 self.focused = true;
5722 self.blink_cursors(self.blink_epoch, cx);
5723 self.buffer.update(cx, |buffer, cx| {
5724 buffer.finalize_last_transaction(cx);
5725 if self.leader_replica_id.is_none() {
5726 buffer.set_active_selections(&self.selections, cx);
5727 }
5728 });
5729 }
5730 }
5731
5732 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5733 let blurred_event = EditorBlurred(cx.handle());
5734 cx.emit_global(blurred_event);
5735 self.focused = false;
5736 self.buffer
5737 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5738 self.hide_context_menu(cx);
5739 cx.emit(Event::Blurred);
5740 cx.notify();
5741 }
5742
5743 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5744 let mut cx = Self::default_keymap_context();
5745 let mode = match self.mode {
5746 EditorMode::SingleLine => "single_line",
5747 EditorMode::AutoHeight { .. } => "auto_height",
5748 EditorMode::Full => "full",
5749 };
5750 cx.map.insert("mode".into(), mode.into());
5751 if self.pending_rename.is_some() {
5752 cx.set.insert("renaming".into());
5753 }
5754 match self.context_menu.as_ref() {
5755 Some(ContextMenu::Completions(_)) => {
5756 cx.set.insert("showing_completions".into());
5757 }
5758 Some(ContextMenu::CodeActions(_)) => {
5759 cx.set.insert("showing_code_actions".into());
5760 }
5761 None => {}
5762 }
5763 cx
5764 }
5765}
5766
5767fn build_style(
5768 settings: &Settings,
5769 get_field_editor_theme: Option<GetFieldEditorTheme>,
5770 override_text_style: Option<&OverrideTextStyle>,
5771 cx: &AppContext,
5772) -> EditorStyle {
5773 let font_cache = cx.font_cache();
5774
5775 let mut theme = settings.theme.editor.clone();
5776 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5777 let field_editor_theme = get_field_editor_theme(&settings.theme);
5778 theme.text_color = field_editor_theme.text.color;
5779 theme.selection = field_editor_theme.selection;
5780 theme.background = field_editor_theme
5781 .container
5782 .background_color
5783 .unwrap_or_default();
5784 EditorStyle {
5785 text: field_editor_theme.text,
5786 placeholder_text: field_editor_theme.placeholder_text,
5787 theme,
5788 }
5789 } else {
5790 let font_family_id = settings.buffer_font_family;
5791 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5792 let font_properties = Default::default();
5793 let font_id = font_cache
5794 .select_font(font_family_id, &font_properties)
5795 .unwrap();
5796 let font_size = settings.buffer_font_size;
5797 EditorStyle {
5798 text: TextStyle {
5799 color: settings.theme.editor.text_color,
5800 font_family_name,
5801 font_family_id,
5802 font_id,
5803 font_size,
5804 font_properties,
5805 underline: Default::default(),
5806 },
5807 placeholder_text: None,
5808 theme,
5809 }
5810 };
5811
5812 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5813 if let Some(highlighted) = style
5814 .text
5815 .clone()
5816 .highlight(highlight_style, font_cache)
5817 .log_err()
5818 {
5819 style.text = highlighted;
5820 }
5821 }
5822
5823 style
5824}
5825
5826trait SelectionExt {
5827 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5828 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5829 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5830 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5831 -> Range<u32>;
5832}
5833
5834impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5835 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5836 let start = self.start.to_point(buffer);
5837 let end = self.end.to_point(buffer);
5838 if self.reversed {
5839 end..start
5840 } else {
5841 start..end
5842 }
5843 }
5844
5845 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5846 let start = self.start.to_offset(buffer);
5847 let end = self.end.to_offset(buffer);
5848 if self.reversed {
5849 end..start
5850 } else {
5851 start..end
5852 }
5853 }
5854
5855 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5856 let start = self
5857 .start
5858 .to_point(&map.buffer_snapshot)
5859 .to_display_point(map);
5860 let end = self
5861 .end
5862 .to_point(&map.buffer_snapshot)
5863 .to_display_point(map);
5864 if self.reversed {
5865 end..start
5866 } else {
5867 start..end
5868 }
5869 }
5870
5871 fn spanned_rows(
5872 &self,
5873 include_end_if_at_line_start: bool,
5874 map: &DisplaySnapshot,
5875 ) -> Range<u32> {
5876 let start = self.start.to_point(&map.buffer_snapshot);
5877 let mut end = self.end.to_point(&map.buffer_snapshot);
5878 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5879 end.row -= 1;
5880 }
5881
5882 let buffer_start = map.prev_line_boundary(start).0;
5883 let buffer_end = map.next_line_boundary(end).0;
5884 buffer_start.row..buffer_end.row + 1
5885 }
5886}
5887
5888impl<T: InvalidationRegion> InvalidationStack<T> {
5889 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5890 where
5891 S: Clone + ToOffset,
5892 {
5893 while let Some(region) = self.last() {
5894 let all_selections_inside_invalidation_ranges =
5895 if selections.len() == region.ranges().len() {
5896 selections
5897 .iter()
5898 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5899 .all(|(selection, invalidation_range)| {
5900 let head = selection.head().to_offset(&buffer);
5901 invalidation_range.start <= head && invalidation_range.end >= head
5902 })
5903 } else {
5904 false
5905 };
5906
5907 if all_selections_inside_invalidation_ranges {
5908 break;
5909 } else {
5910 self.pop();
5911 }
5912 }
5913 }
5914}
5915
5916impl<T> Default for InvalidationStack<T> {
5917 fn default() -> Self {
5918 Self(Default::default())
5919 }
5920}
5921
5922impl<T> Deref for InvalidationStack<T> {
5923 type Target = Vec<T>;
5924
5925 fn deref(&self) -> &Self::Target {
5926 &self.0
5927 }
5928}
5929
5930impl<T> DerefMut for InvalidationStack<T> {
5931 fn deref_mut(&mut self) -> &mut Self::Target {
5932 &mut self.0
5933 }
5934}
5935
5936impl InvalidationRegion for BracketPairState {
5937 fn ranges(&self) -> &[Range<Anchor>] {
5938 &self.ranges
5939 }
5940}
5941
5942impl InvalidationRegion for SnippetState {
5943 fn ranges(&self) -> &[Range<Anchor>] {
5944 &self.ranges[self.active_index]
5945 }
5946}
5947
5948impl Deref for EditorStyle {
5949 type Target = theme::Editor;
5950
5951 fn deref(&self) -> &Self::Target {
5952 &self.theme
5953 }
5954}
5955
5956pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5957 let mut highlighted_lines = Vec::new();
5958 for line in diagnostic.message.lines() {
5959 highlighted_lines.push(highlight_diagnostic_message(line));
5960 }
5961
5962 Arc::new(move |cx: &BlockContext| {
5963 let settings = cx.global::<Settings>();
5964 let theme = &settings.theme.editor;
5965 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5966 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5967 Flex::column()
5968 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5969 Label::new(
5970 line.clone(),
5971 style.message.clone().with_font_size(font_size),
5972 )
5973 .with_highlights(highlights.clone())
5974 .contained()
5975 .with_margin_left(cx.anchor_x)
5976 .boxed()
5977 }))
5978 .aligned()
5979 .left()
5980 .boxed()
5981 })
5982}
5983
5984pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5985 let mut message_without_backticks = String::new();
5986 let mut prev_offset = 0;
5987 let mut inside_block = false;
5988 let mut highlights = Vec::new();
5989 for (match_ix, (offset, _)) in message
5990 .match_indices('`')
5991 .chain([(message.len(), "")])
5992 .enumerate()
5993 {
5994 message_without_backticks.push_str(&message[prev_offset..offset]);
5995 if inside_block {
5996 highlights.extend(prev_offset - match_ix..offset - match_ix);
5997 }
5998
5999 inside_block = !inside_block;
6000 prev_offset = offset + 1;
6001 }
6002
6003 (message_without_backticks, highlights)
6004}
6005
6006pub fn diagnostic_style(
6007 severity: DiagnosticSeverity,
6008 valid: bool,
6009 theme: &theme::Editor,
6010) -> DiagnosticStyle {
6011 match (severity, valid) {
6012 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6013 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6014 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6015 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6016 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6017 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6018 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6019 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6020 _ => theme.invalid_hint_diagnostic.clone(),
6021 }
6022}
6023
6024pub fn combine_syntax_and_fuzzy_match_highlights(
6025 text: &str,
6026 default_style: HighlightStyle,
6027 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6028 match_indices: &[usize],
6029) -> Vec<(Range<usize>, HighlightStyle)> {
6030 let mut result = Vec::new();
6031 let mut match_indices = match_indices.iter().copied().peekable();
6032
6033 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6034 {
6035 syntax_highlight.weight = None;
6036
6037 // Add highlights for any fuzzy match characters before the next
6038 // syntax highlight range.
6039 while let Some(&match_index) = match_indices.peek() {
6040 if match_index >= range.start {
6041 break;
6042 }
6043 match_indices.next();
6044 let end_index = char_ix_after(match_index, text);
6045 let mut match_style = default_style;
6046 match_style.weight = Some(fonts::Weight::BOLD);
6047 result.push((match_index..end_index, match_style));
6048 }
6049
6050 if range.start == usize::MAX {
6051 break;
6052 }
6053
6054 // Add highlights for any fuzzy match characters within the
6055 // syntax highlight range.
6056 let mut offset = range.start;
6057 while let Some(&match_index) = match_indices.peek() {
6058 if match_index >= range.end {
6059 break;
6060 }
6061
6062 match_indices.next();
6063 if match_index > offset {
6064 result.push((offset..match_index, syntax_highlight));
6065 }
6066
6067 let mut end_index = char_ix_after(match_index, text);
6068 while let Some(&next_match_index) = match_indices.peek() {
6069 if next_match_index == end_index && next_match_index < range.end {
6070 end_index = char_ix_after(next_match_index, text);
6071 match_indices.next();
6072 } else {
6073 break;
6074 }
6075 }
6076
6077 let mut match_style = syntax_highlight;
6078 match_style.weight = Some(fonts::Weight::BOLD);
6079 result.push((match_index..end_index, match_style));
6080 offset = end_index;
6081 }
6082
6083 if offset < range.end {
6084 result.push((offset..range.end, syntax_highlight));
6085 }
6086 }
6087
6088 fn char_ix_after(ix: usize, text: &str) -> usize {
6089 ix + text[ix..].chars().next().unwrap().len_utf8()
6090 }
6091
6092 result
6093}
6094
6095pub fn styled_runs_for_code_label<'a>(
6096 label: &'a CodeLabel,
6097 syntax_theme: &'a theme::SyntaxTheme,
6098) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6099 let fade_out = HighlightStyle {
6100 fade_out: Some(0.35),
6101 ..Default::default()
6102 };
6103
6104 let mut prev_end = label.filter_range.end;
6105 label
6106 .runs
6107 .iter()
6108 .enumerate()
6109 .flat_map(move |(ix, (range, highlight_id))| {
6110 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6111 style
6112 } else {
6113 return Default::default();
6114 };
6115 let mut muted_style = style.clone();
6116 muted_style.highlight(fade_out);
6117
6118 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6119 if range.start >= label.filter_range.end {
6120 if range.start > prev_end {
6121 runs.push((prev_end..range.start, fade_out));
6122 }
6123 runs.push((range.clone(), muted_style));
6124 } else if range.end <= label.filter_range.end {
6125 runs.push((range.clone(), style));
6126 } else {
6127 runs.push((range.start..label.filter_range.end, style));
6128 runs.push((label.filter_range.end..range.end, muted_style));
6129 }
6130 prev_end = cmp::max(prev_end, range.end);
6131
6132 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6133 runs.push((prev_end..label.text.len(), fade_out));
6134 }
6135
6136 runs
6137 })
6138}
6139
6140#[cfg(test)]
6141mod tests {
6142 use crate::test::marked_text_by;
6143
6144 use super::*;
6145 use gpui::{
6146 geometry::rect::RectF,
6147 platform::{WindowBounds, WindowOptions},
6148 };
6149 use language::{LanguageConfig, LanguageServerConfig};
6150 use lsp::FakeLanguageServer;
6151 use project::FakeFs;
6152 use smol::stream::StreamExt;
6153 use std::{cell::RefCell, rc::Rc, time::Instant};
6154 use text::Point;
6155 use unindent::Unindent;
6156 use util::test::sample_text;
6157 use workspace::FollowableItem;
6158
6159 #[gpui::test]
6160 fn test_edit_events(cx: &mut MutableAppContext) {
6161 populate_settings(cx);
6162 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6163
6164 let events = Rc::new(RefCell::new(Vec::new()));
6165 let (_, editor1) = cx.add_window(Default::default(), {
6166 let events = events.clone();
6167 |cx| {
6168 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6169 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6170 events.borrow_mut().push(("editor1", *event));
6171 }
6172 })
6173 .detach();
6174 Editor::for_buffer(buffer.clone(), None, cx)
6175 }
6176 });
6177 let (_, editor2) = cx.add_window(Default::default(), {
6178 let events = events.clone();
6179 |cx| {
6180 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6181 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6182 events.borrow_mut().push(("editor2", *event));
6183 }
6184 })
6185 .detach();
6186 Editor::for_buffer(buffer.clone(), None, cx)
6187 }
6188 });
6189 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6190
6191 // Mutating editor 1 will emit an `Edited` event only for that editor.
6192 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6193 assert_eq!(
6194 mem::take(&mut *events.borrow_mut()),
6195 [
6196 ("editor1", Event::Edited),
6197 ("editor1", Event::BufferEdited),
6198 ("editor2", Event::BufferEdited),
6199 ("editor1", Event::Dirtied),
6200 ("editor2", Event::Dirtied)
6201 ]
6202 );
6203
6204 // Mutating editor 2 will emit an `Edited` event only for that editor.
6205 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6206 assert_eq!(
6207 mem::take(&mut *events.borrow_mut()),
6208 [
6209 ("editor2", Event::Edited),
6210 ("editor1", Event::BufferEdited),
6211 ("editor2", Event::BufferEdited),
6212 ]
6213 );
6214
6215 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6216 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6217 assert_eq!(
6218 mem::take(&mut *events.borrow_mut()),
6219 [
6220 ("editor1", Event::Edited),
6221 ("editor1", Event::BufferEdited),
6222 ("editor2", Event::BufferEdited),
6223 ]
6224 );
6225
6226 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6227 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6228 assert_eq!(
6229 mem::take(&mut *events.borrow_mut()),
6230 [
6231 ("editor1", Event::Edited),
6232 ("editor1", Event::BufferEdited),
6233 ("editor2", Event::BufferEdited),
6234 ]
6235 );
6236
6237 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6238 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6239 assert_eq!(
6240 mem::take(&mut *events.borrow_mut()),
6241 [
6242 ("editor2", Event::Edited),
6243 ("editor1", Event::BufferEdited),
6244 ("editor2", Event::BufferEdited),
6245 ]
6246 );
6247
6248 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6249 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6250 assert_eq!(
6251 mem::take(&mut *events.borrow_mut()),
6252 [
6253 ("editor2", Event::Edited),
6254 ("editor1", Event::BufferEdited),
6255 ("editor2", Event::BufferEdited),
6256 ]
6257 );
6258
6259 // No event is emitted when the mutation is a no-op.
6260 editor2.update(cx, |editor, cx| {
6261 editor.select_ranges([0..0], None, cx);
6262 editor.backspace(&Backspace, cx);
6263 });
6264 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6265 }
6266
6267 #[gpui::test]
6268 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6269 populate_settings(cx);
6270 let mut now = Instant::now();
6271 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6272 let group_interval = buffer.read(cx).transaction_group_interval();
6273 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6274 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6275
6276 editor.update(cx, |editor, cx| {
6277 editor.start_transaction_at(now, cx);
6278 editor.select_ranges([2..4], None, cx);
6279 editor.insert("cd", cx);
6280 editor.end_transaction_at(now, cx);
6281 assert_eq!(editor.text(cx), "12cd56");
6282 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6283
6284 editor.start_transaction_at(now, cx);
6285 editor.select_ranges([4..5], None, cx);
6286 editor.insert("e", cx);
6287 editor.end_transaction_at(now, cx);
6288 assert_eq!(editor.text(cx), "12cde6");
6289 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6290
6291 now += group_interval + Duration::from_millis(1);
6292 editor.select_ranges([2..2], None, cx);
6293
6294 // Simulate an edit in another editor
6295 buffer.update(cx, |buffer, cx| {
6296 buffer.start_transaction_at(now, cx);
6297 buffer.edit([0..1], "a", cx);
6298 buffer.edit([1..1], "b", cx);
6299 buffer.end_transaction_at(now, cx);
6300 });
6301
6302 assert_eq!(editor.text(cx), "ab2cde6");
6303 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6304
6305 // Last transaction happened past the group interval in a different editor.
6306 // Undo it individually and don't restore selections.
6307 editor.undo(&Undo, cx);
6308 assert_eq!(editor.text(cx), "12cde6");
6309 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6310
6311 // First two transactions happened within the group interval in this editor.
6312 // Undo them together and restore selections.
6313 editor.undo(&Undo, cx);
6314 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6315 assert_eq!(editor.text(cx), "123456");
6316 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6317
6318 // Redo the first two transactions together.
6319 editor.redo(&Redo, cx);
6320 assert_eq!(editor.text(cx), "12cde6");
6321 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6322
6323 // Redo the last transaction on its own.
6324 editor.redo(&Redo, cx);
6325 assert_eq!(editor.text(cx), "ab2cde6");
6326 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6327
6328 // Test empty transactions.
6329 editor.start_transaction_at(now, cx);
6330 editor.end_transaction_at(now, cx);
6331 editor.undo(&Undo, cx);
6332 assert_eq!(editor.text(cx), "12cde6");
6333 });
6334 }
6335
6336 #[gpui::test]
6337 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6338 populate_settings(cx);
6339
6340 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6341 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6342 editor.update(cx, |view, cx| {
6343 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6344 });
6345 assert_eq!(
6346 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6347 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6348 );
6349
6350 editor.update(cx, |view, cx| {
6351 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6352 });
6353
6354 assert_eq!(
6355 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6356 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6357 );
6358
6359 editor.update(cx, |view, cx| {
6360 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6361 });
6362
6363 assert_eq!(
6364 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6365 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6366 );
6367
6368 editor.update(cx, |view, cx| {
6369 view.end_selection(cx);
6370 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6371 });
6372
6373 assert_eq!(
6374 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6375 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6376 );
6377
6378 editor.update(cx, |view, cx| {
6379 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6380 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6381 });
6382
6383 assert_eq!(
6384 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6385 [
6386 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6387 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6388 ]
6389 );
6390
6391 editor.update(cx, |view, cx| {
6392 view.end_selection(cx);
6393 });
6394
6395 assert_eq!(
6396 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6397 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6398 );
6399 }
6400
6401 #[gpui::test]
6402 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6403 populate_settings(cx);
6404 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6405 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6406
6407 view.update(cx, |view, cx| {
6408 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6409 assert_eq!(
6410 view.selected_display_ranges(cx),
6411 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6412 );
6413 });
6414
6415 view.update(cx, |view, cx| {
6416 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6417 assert_eq!(
6418 view.selected_display_ranges(cx),
6419 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6420 );
6421 });
6422
6423 view.update(cx, |view, cx| {
6424 view.cancel(&Cancel, cx);
6425 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6426 assert_eq!(
6427 view.selected_display_ranges(cx),
6428 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6429 );
6430 });
6431 }
6432
6433 #[gpui::test]
6434 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6435 populate_settings(cx);
6436 use workspace::Item;
6437 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6438 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6439
6440 cx.add_window(Default::default(), |cx| {
6441 let mut editor = build_editor(buffer.clone(), cx);
6442 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6443
6444 // Move the cursor a small distance.
6445 // Nothing is added to the navigation history.
6446 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6447 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6448 assert!(nav_history.borrow_mut().pop_backward().is_none());
6449
6450 // Move the cursor a large distance.
6451 // The history can jump back to the previous position.
6452 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6453 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6454 editor.navigate(nav_entry.data.unwrap(), cx);
6455 assert_eq!(nav_entry.item.id(), cx.view_id());
6456 assert_eq!(
6457 editor.selected_display_ranges(cx),
6458 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6459 );
6460 assert!(nav_history.borrow_mut().pop_backward().is_none());
6461
6462 // Move the cursor a small distance via the mouse.
6463 // Nothing is added to the navigation history.
6464 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6465 editor.end_selection(cx);
6466 assert_eq!(
6467 editor.selected_display_ranges(cx),
6468 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6469 );
6470 assert!(nav_history.borrow_mut().pop_backward().is_none());
6471
6472 // Move the cursor a large distance via the mouse.
6473 // The history can jump back to the previous position.
6474 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6475 editor.end_selection(cx);
6476 assert_eq!(
6477 editor.selected_display_ranges(cx),
6478 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6479 );
6480 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6481 editor.navigate(nav_entry.data.unwrap(), cx);
6482 assert_eq!(nav_entry.item.id(), cx.view_id());
6483 assert_eq!(
6484 editor.selected_display_ranges(cx),
6485 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6486 );
6487 assert!(nav_history.borrow_mut().pop_backward().is_none());
6488
6489 editor
6490 });
6491 }
6492
6493 #[gpui::test]
6494 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6495 populate_settings(cx);
6496 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6497 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6498
6499 view.update(cx, |view, cx| {
6500 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6501 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6502 view.end_selection(cx);
6503
6504 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6505 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6506 view.end_selection(cx);
6507 assert_eq!(
6508 view.selected_display_ranges(cx),
6509 [
6510 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6511 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6512 ]
6513 );
6514 });
6515
6516 view.update(cx, |view, cx| {
6517 view.cancel(&Cancel, cx);
6518 assert_eq!(
6519 view.selected_display_ranges(cx),
6520 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6521 );
6522 });
6523
6524 view.update(cx, |view, cx| {
6525 view.cancel(&Cancel, cx);
6526 assert_eq!(
6527 view.selected_display_ranges(cx),
6528 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6529 );
6530 });
6531 }
6532
6533 #[gpui::test]
6534 fn test_fold(cx: &mut gpui::MutableAppContext) {
6535 populate_settings(cx);
6536 let buffer = MultiBuffer::build_simple(
6537 &"
6538 impl Foo {
6539 // Hello!
6540
6541 fn a() {
6542 1
6543 }
6544
6545 fn b() {
6546 2
6547 }
6548
6549 fn c() {
6550 3
6551 }
6552 }
6553 "
6554 .unindent(),
6555 cx,
6556 );
6557 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6558
6559 view.update(cx, |view, cx| {
6560 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6561 view.fold(&Fold, cx);
6562 assert_eq!(
6563 view.display_text(cx),
6564 "
6565 impl Foo {
6566 // Hello!
6567
6568 fn a() {
6569 1
6570 }
6571
6572 fn b() {…
6573 }
6574
6575 fn c() {…
6576 }
6577 }
6578 "
6579 .unindent(),
6580 );
6581
6582 view.fold(&Fold, cx);
6583 assert_eq!(
6584 view.display_text(cx),
6585 "
6586 impl Foo {…
6587 }
6588 "
6589 .unindent(),
6590 );
6591
6592 view.unfold_lines(&UnfoldLines, cx);
6593 assert_eq!(
6594 view.display_text(cx),
6595 "
6596 impl Foo {
6597 // Hello!
6598
6599 fn a() {
6600 1
6601 }
6602
6603 fn b() {…
6604 }
6605
6606 fn c() {…
6607 }
6608 }
6609 "
6610 .unindent(),
6611 );
6612
6613 view.unfold_lines(&UnfoldLines, cx);
6614 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6615 });
6616 }
6617
6618 #[gpui::test]
6619 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6620 populate_settings(cx);
6621 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6622 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6623
6624 buffer.update(cx, |buffer, cx| {
6625 buffer.edit(
6626 vec![
6627 Point::new(1, 0)..Point::new(1, 0),
6628 Point::new(1, 1)..Point::new(1, 1),
6629 ],
6630 "\t",
6631 cx,
6632 );
6633 });
6634
6635 view.update(cx, |view, cx| {
6636 assert_eq!(
6637 view.selected_display_ranges(cx),
6638 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6639 );
6640
6641 view.move_down(&MoveDown, cx);
6642 assert_eq!(
6643 view.selected_display_ranges(cx),
6644 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6645 );
6646
6647 view.move_right(&MoveRight, cx);
6648 assert_eq!(
6649 view.selected_display_ranges(cx),
6650 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6651 );
6652
6653 view.move_left(&MoveLeft, cx);
6654 assert_eq!(
6655 view.selected_display_ranges(cx),
6656 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6657 );
6658
6659 view.move_up(&MoveUp, cx);
6660 assert_eq!(
6661 view.selected_display_ranges(cx),
6662 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6663 );
6664
6665 view.move_to_end(&MoveToEnd, cx);
6666 assert_eq!(
6667 view.selected_display_ranges(cx),
6668 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6669 );
6670
6671 view.move_to_beginning(&MoveToBeginning, cx);
6672 assert_eq!(
6673 view.selected_display_ranges(cx),
6674 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6675 );
6676
6677 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6678 view.select_to_beginning(&SelectToBeginning, cx);
6679 assert_eq!(
6680 view.selected_display_ranges(cx),
6681 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6682 );
6683
6684 view.select_to_end(&SelectToEnd, cx);
6685 assert_eq!(
6686 view.selected_display_ranges(cx),
6687 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6688 );
6689 });
6690 }
6691
6692 #[gpui::test]
6693 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6694 populate_settings(cx);
6695 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6696 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6697
6698 assert_eq!('ⓐ'.len_utf8(), 3);
6699 assert_eq!('α'.len_utf8(), 2);
6700
6701 view.update(cx, |view, cx| {
6702 view.fold_ranges(
6703 vec![
6704 Point::new(0, 6)..Point::new(0, 12),
6705 Point::new(1, 2)..Point::new(1, 4),
6706 Point::new(2, 4)..Point::new(2, 8),
6707 ],
6708 cx,
6709 );
6710 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6711
6712 view.move_right(&MoveRight, cx);
6713 assert_eq!(
6714 view.selected_display_ranges(cx),
6715 &[empty_range(0, "ⓐ".len())]
6716 );
6717 view.move_right(&MoveRight, cx);
6718 assert_eq!(
6719 view.selected_display_ranges(cx),
6720 &[empty_range(0, "ⓐⓑ".len())]
6721 );
6722 view.move_right(&MoveRight, cx);
6723 assert_eq!(
6724 view.selected_display_ranges(cx),
6725 &[empty_range(0, "ⓐⓑ…".len())]
6726 );
6727
6728 view.move_down(&MoveDown, cx);
6729 assert_eq!(
6730 view.selected_display_ranges(cx),
6731 &[empty_range(1, "ab…".len())]
6732 );
6733 view.move_left(&MoveLeft, cx);
6734 assert_eq!(
6735 view.selected_display_ranges(cx),
6736 &[empty_range(1, "ab".len())]
6737 );
6738 view.move_left(&MoveLeft, cx);
6739 assert_eq!(
6740 view.selected_display_ranges(cx),
6741 &[empty_range(1, "a".len())]
6742 );
6743
6744 view.move_down(&MoveDown, cx);
6745 assert_eq!(
6746 view.selected_display_ranges(cx),
6747 &[empty_range(2, "α".len())]
6748 );
6749 view.move_right(&MoveRight, cx);
6750 assert_eq!(
6751 view.selected_display_ranges(cx),
6752 &[empty_range(2, "αβ".len())]
6753 );
6754 view.move_right(&MoveRight, cx);
6755 assert_eq!(
6756 view.selected_display_ranges(cx),
6757 &[empty_range(2, "αβ…".len())]
6758 );
6759 view.move_right(&MoveRight, cx);
6760 assert_eq!(
6761 view.selected_display_ranges(cx),
6762 &[empty_range(2, "αβ…ε".len())]
6763 );
6764
6765 view.move_up(&MoveUp, cx);
6766 assert_eq!(
6767 view.selected_display_ranges(cx),
6768 &[empty_range(1, "ab…e".len())]
6769 );
6770 view.move_up(&MoveUp, cx);
6771 assert_eq!(
6772 view.selected_display_ranges(cx),
6773 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6774 );
6775 view.move_left(&MoveLeft, cx);
6776 assert_eq!(
6777 view.selected_display_ranges(cx),
6778 &[empty_range(0, "ⓐⓑ…".len())]
6779 );
6780 view.move_left(&MoveLeft, cx);
6781 assert_eq!(
6782 view.selected_display_ranges(cx),
6783 &[empty_range(0, "ⓐⓑ".len())]
6784 );
6785 view.move_left(&MoveLeft, cx);
6786 assert_eq!(
6787 view.selected_display_ranges(cx),
6788 &[empty_range(0, "ⓐ".len())]
6789 );
6790 });
6791 }
6792
6793 #[gpui::test]
6794 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6795 populate_settings(cx);
6796 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6797 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6798 view.update(cx, |view, cx| {
6799 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6800 view.move_down(&MoveDown, cx);
6801 assert_eq!(
6802 view.selected_display_ranges(cx),
6803 &[empty_range(1, "abcd".len())]
6804 );
6805
6806 view.move_down(&MoveDown, cx);
6807 assert_eq!(
6808 view.selected_display_ranges(cx),
6809 &[empty_range(2, "αβγ".len())]
6810 );
6811
6812 view.move_down(&MoveDown, cx);
6813 assert_eq!(
6814 view.selected_display_ranges(cx),
6815 &[empty_range(3, "abcd".len())]
6816 );
6817
6818 view.move_down(&MoveDown, cx);
6819 assert_eq!(
6820 view.selected_display_ranges(cx),
6821 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6822 );
6823
6824 view.move_up(&MoveUp, cx);
6825 assert_eq!(
6826 view.selected_display_ranges(cx),
6827 &[empty_range(3, "abcd".len())]
6828 );
6829
6830 view.move_up(&MoveUp, cx);
6831 assert_eq!(
6832 view.selected_display_ranges(cx),
6833 &[empty_range(2, "αβγ".len())]
6834 );
6835 });
6836 }
6837
6838 #[gpui::test]
6839 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6840 populate_settings(cx);
6841 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6842 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6843 view.update(cx, |view, cx| {
6844 view.select_display_ranges(
6845 &[
6846 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6847 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6848 ],
6849 cx,
6850 );
6851 });
6852
6853 view.update(cx, |view, cx| {
6854 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6855 assert_eq!(
6856 view.selected_display_ranges(cx),
6857 &[
6858 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6859 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6860 ]
6861 );
6862 });
6863
6864 view.update(cx, |view, cx| {
6865 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6866 assert_eq!(
6867 view.selected_display_ranges(cx),
6868 &[
6869 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6870 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6871 ]
6872 );
6873 });
6874
6875 view.update(cx, |view, cx| {
6876 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6877 assert_eq!(
6878 view.selected_display_ranges(cx),
6879 &[
6880 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6881 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6882 ]
6883 );
6884 });
6885
6886 view.update(cx, |view, cx| {
6887 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6888 assert_eq!(
6889 view.selected_display_ranges(cx),
6890 &[
6891 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6892 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6893 ]
6894 );
6895 });
6896
6897 // Moving to the end of line again is a no-op.
6898 view.update(cx, |view, cx| {
6899 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6900 assert_eq!(
6901 view.selected_display_ranges(cx),
6902 &[
6903 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6904 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6905 ]
6906 );
6907 });
6908
6909 view.update(cx, |view, cx| {
6910 view.move_left(&MoveLeft, cx);
6911 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6912 assert_eq!(
6913 view.selected_display_ranges(cx),
6914 &[
6915 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6916 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6917 ]
6918 );
6919 });
6920
6921 view.update(cx, |view, cx| {
6922 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6923 assert_eq!(
6924 view.selected_display_ranges(cx),
6925 &[
6926 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6927 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6928 ]
6929 );
6930 });
6931
6932 view.update(cx, |view, cx| {
6933 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6934 assert_eq!(
6935 view.selected_display_ranges(cx),
6936 &[
6937 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6938 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6939 ]
6940 );
6941 });
6942
6943 view.update(cx, |view, cx| {
6944 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6945 assert_eq!(
6946 view.selected_display_ranges(cx),
6947 &[
6948 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6949 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6950 ]
6951 );
6952 });
6953
6954 view.update(cx, |view, cx| {
6955 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6956 assert_eq!(view.display_text(cx), "ab\n de");
6957 assert_eq!(
6958 view.selected_display_ranges(cx),
6959 &[
6960 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6961 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6962 ]
6963 );
6964 });
6965
6966 view.update(cx, |view, cx| {
6967 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6968 assert_eq!(view.display_text(cx), "\n");
6969 assert_eq!(
6970 view.selected_display_ranges(cx),
6971 &[
6972 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6973 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6974 ]
6975 );
6976 });
6977 }
6978
6979 #[gpui::test]
6980 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6981 populate_settings(cx);
6982 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6983 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6984 view.update(cx, |view, cx| {
6985 view.select_display_ranges(
6986 &[
6987 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6988 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6989 ],
6990 cx,
6991 );
6992
6993 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6994 assert_selection_ranges(
6995 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6996 vec![('<', '>'), ('[', ']')],
6997 view,
6998 cx,
6999 );
7000
7001 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7002 assert_selection_ranges(
7003 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
7004 vec![('<', '>'), ('[', ']')],
7005 view,
7006 cx,
7007 );
7008
7009 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7010 assert_selection_ranges(
7011 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
7012 vec![('<', '>'), ('[', ']')],
7013 view,
7014 cx,
7015 );
7016
7017 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7018 assert_selection_ranges(
7019 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
7020 vec![('<', '>'), ('[', ']')],
7021 view,
7022 cx,
7023 );
7024
7025 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7026 assert_selection_ranges(
7027 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
7028 vec![('<', '>'), ('[', ']')],
7029 view,
7030 cx,
7031 );
7032
7033 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7034 assert_selection_ranges(
7035 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
7036 vec![('<', '>'), ('[', ']')],
7037 view,
7038 cx,
7039 );
7040
7041 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7042 assert_selection_ranges(
7043 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
7044 vec![('<', '>'), ('[', ']')],
7045 view,
7046 cx,
7047 );
7048
7049 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7050 assert_selection_ranges(
7051 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7052 vec![('<', '>'), ('[', ']')],
7053 view,
7054 cx,
7055 );
7056
7057 view.move_right(&MoveRight, cx);
7058 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
7059 assert_selection_ranges(
7060 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7061 vec![('<', '>'), ('[', ']')],
7062 view,
7063 cx,
7064 );
7065
7066 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
7067 assert_selection_ranges(
7068 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
7069 vec![('<', '>'), ('[', ']')],
7070 view,
7071 cx,
7072 );
7073
7074 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
7075 assert_selection_ranges(
7076 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7077 vec![('<', '>'), ('[', ']')],
7078 view,
7079 cx,
7080 );
7081 });
7082 }
7083
7084 #[gpui::test]
7085 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7086 populate_settings(cx);
7087 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7088 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7089
7090 view.update(cx, |view, cx| {
7091 view.set_wrap_width(Some(140.), cx);
7092 assert_eq!(
7093 view.display_text(cx),
7094 "use one::{\n two::three::\n four::five\n};"
7095 );
7096
7097 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7098
7099 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7100 assert_eq!(
7101 view.selected_display_ranges(cx),
7102 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7103 );
7104
7105 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7106 assert_eq!(
7107 view.selected_display_ranges(cx),
7108 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7109 );
7110
7111 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7112 assert_eq!(
7113 view.selected_display_ranges(cx),
7114 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7115 );
7116
7117 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7118 assert_eq!(
7119 view.selected_display_ranges(cx),
7120 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7121 );
7122
7123 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7124 assert_eq!(
7125 view.selected_display_ranges(cx),
7126 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7127 );
7128
7129 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7130 assert_eq!(
7131 view.selected_display_ranges(cx),
7132 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7133 );
7134 });
7135 }
7136
7137 #[gpui::test]
7138 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7139 populate_settings(cx);
7140 let buffer = MultiBuffer::build_simple("one two three four", cx);
7141 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7142
7143 view.update(cx, |view, cx| {
7144 view.select_display_ranges(
7145 &[
7146 // an empty selection - the preceding word fragment is deleted
7147 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7148 // characters selected - they are deleted
7149 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7150 ],
7151 cx,
7152 );
7153 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
7154 });
7155
7156 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7157
7158 view.update(cx, |view, cx| {
7159 view.select_display_ranges(
7160 &[
7161 // an empty selection - the following word fragment is deleted
7162 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7163 // characters selected - they are deleted
7164 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7165 ],
7166 cx,
7167 );
7168 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
7169 });
7170
7171 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7172 }
7173
7174 #[gpui::test]
7175 fn test_newline(cx: &mut gpui::MutableAppContext) {
7176 populate_settings(cx);
7177 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7178 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7179
7180 view.update(cx, |view, cx| {
7181 view.select_display_ranges(
7182 &[
7183 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7184 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7185 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7186 ],
7187 cx,
7188 );
7189
7190 view.newline(&Newline, cx);
7191 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7192 });
7193 }
7194
7195 #[gpui::test]
7196 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7197 populate_settings(cx);
7198 let buffer = MultiBuffer::build_simple(
7199 "
7200 a
7201 b(
7202 X
7203 )
7204 c(
7205 X
7206 )
7207 "
7208 .unindent()
7209 .as_str(),
7210 cx,
7211 );
7212
7213 let (_, editor) = cx.add_window(Default::default(), |cx| {
7214 let mut editor = build_editor(buffer.clone(), cx);
7215 editor.select_ranges(
7216 [
7217 Point::new(2, 4)..Point::new(2, 5),
7218 Point::new(5, 4)..Point::new(5, 5),
7219 ],
7220 None,
7221 cx,
7222 );
7223 editor
7224 });
7225
7226 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7227 buffer.update(cx, |buffer, cx| {
7228 buffer.edit(
7229 [
7230 Point::new(1, 2)..Point::new(3, 0),
7231 Point::new(4, 2)..Point::new(6, 0),
7232 ],
7233 "",
7234 cx,
7235 );
7236 assert_eq!(
7237 buffer.read(cx).text(),
7238 "
7239 a
7240 b()
7241 c()
7242 "
7243 .unindent()
7244 );
7245 });
7246
7247 editor.update(cx, |editor, cx| {
7248 assert_eq!(
7249 editor.selected_ranges(cx),
7250 &[
7251 Point::new(1, 2)..Point::new(1, 2),
7252 Point::new(2, 2)..Point::new(2, 2),
7253 ],
7254 );
7255
7256 editor.newline(&Newline, cx);
7257 assert_eq!(
7258 editor.text(cx),
7259 "
7260 a
7261 b(
7262 )
7263 c(
7264 )
7265 "
7266 .unindent()
7267 );
7268
7269 // The selections are moved after the inserted newlines
7270 assert_eq!(
7271 editor.selected_ranges(cx),
7272 &[
7273 Point::new(2, 0)..Point::new(2, 0),
7274 Point::new(4, 0)..Point::new(4, 0),
7275 ],
7276 );
7277 });
7278 }
7279
7280 #[gpui::test]
7281 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7282 populate_settings(cx);
7283 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7284 let (_, editor) = cx.add_window(Default::default(), |cx| {
7285 let mut editor = build_editor(buffer.clone(), cx);
7286 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7287 editor
7288 });
7289
7290 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7291 buffer.update(cx, |buffer, cx| {
7292 buffer.edit([2..5, 10..13, 18..21], "", cx);
7293 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7294 });
7295
7296 editor.update(cx, |editor, cx| {
7297 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7298
7299 editor.insert("Z", cx);
7300 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7301
7302 // The selections are moved after the inserted characters
7303 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7304 });
7305 }
7306
7307 #[gpui::test]
7308 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7309 populate_settings(cx);
7310 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7311 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7312
7313 view.update(cx, |view, cx| {
7314 // two selections on the same line
7315 view.select_display_ranges(
7316 &[
7317 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7318 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7319 ],
7320 cx,
7321 );
7322
7323 // indent from mid-tabstop to full tabstop
7324 view.tab(&Tab, cx);
7325 assert_eq!(view.text(cx), " one two\nthree\n four");
7326 assert_eq!(
7327 view.selected_display_ranges(cx),
7328 &[
7329 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7330 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7331 ]
7332 );
7333
7334 // outdent from 1 tabstop to 0 tabstops
7335 view.outdent(&Outdent, cx);
7336 assert_eq!(view.text(cx), "one two\nthree\n four");
7337 assert_eq!(
7338 view.selected_display_ranges(cx),
7339 &[
7340 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7341 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7342 ]
7343 );
7344
7345 // select across line ending
7346 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7347
7348 // indent and outdent affect only the preceding line
7349 view.tab(&Tab, cx);
7350 assert_eq!(view.text(cx), "one two\n three\n four");
7351 assert_eq!(
7352 view.selected_display_ranges(cx),
7353 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7354 );
7355 view.outdent(&Outdent, cx);
7356 assert_eq!(view.text(cx), "one two\nthree\n four");
7357 assert_eq!(
7358 view.selected_display_ranges(cx),
7359 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7360 );
7361
7362 // Ensure that indenting/outdenting works when the cursor is at column 0.
7363 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7364 view.tab(&Tab, cx);
7365 assert_eq!(view.text(cx), "one two\n three\n four");
7366 assert_eq!(
7367 view.selected_display_ranges(cx),
7368 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7369 );
7370
7371 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7372 view.outdent(&Outdent, cx);
7373 assert_eq!(view.text(cx), "one two\nthree\n four");
7374 assert_eq!(
7375 view.selected_display_ranges(cx),
7376 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7377 );
7378 });
7379 }
7380
7381 #[gpui::test]
7382 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7383 populate_settings(cx);
7384 let (_, view) = cx.add_window(Default::default(), |cx| {
7385 build_editor(MultiBuffer::build_simple("", cx), cx)
7386 });
7387
7388 view.update(cx, |view, cx| {
7389 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7390 view.select_display_ranges(
7391 &[
7392 // an empty selection - the preceding character is deleted
7393 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7394 // one character selected - it is deleted
7395 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7396 // a line suffix selected - it is deleted
7397 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7398 ],
7399 cx,
7400 );
7401 view.backspace(&Backspace, cx);
7402 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7403
7404 view.set_text(" one\n two\n three\n four", cx);
7405 view.select_display_ranges(
7406 &[
7407 // cursors at the the end of leading indent - last indent is deleted
7408 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7409 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7410 // cursors inside leading indent - overlapping indent deletions are coalesced
7411 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7412 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7413 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7414 // cursor at the beginning of a line - preceding newline is deleted
7415 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7416 // selection inside leading indent - only the selected character is deleted
7417 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7418 ],
7419 cx,
7420 );
7421 view.backspace(&Backspace, cx);
7422 assert_eq!(view.text(cx), "one\n two\n three four");
7423 });
7424 }
7425
7426 #[gpui::test]
7427 fn test_delete(cx: &mut gpui::MutableAppContext) {
7428 populate_settings(cx);
7429 let buffer =
7430 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7431 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7432
7433 view.update(cx, |view, cx| {
7434 view.select_display_ranges(
7435 &[
7436 // an empty selection - the following character is deleted
7437 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7438 // one character selected - it is deleted
7439 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7440 // a line suffix selected - it is deleted
7441 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7442 ],
7443 cx,
7444 );
7445 view.delete(&Delete, cx);
7446 });
7447
7448 assert_eq!(
7449 buffer.read(cx).read(cx).text(),
7450 "on two three\nfou five six\nseven ten\n"
7451 );
7452 }
7453
7454 #[gpui::test]
7455 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7456 populate_settings(cx);
7457 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7458 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7459 view.update(cx, |view, cx| {
7460 view.select_display_ranges(
7461 &[
7462 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7463 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7464 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7465 ],
7466 cx,
7467 );
7468 view.delete_line(&DeleteLine, cx);
7469 assert_eq!(view.display_text(cx), "ghi");
7470 assert_eq!(
7471 view.selected_display_ranges(cx),
7472 vec![
7473 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7474 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7475 ]
7476 );
7477 });
7478
7479 populate_settings(cx);
7480 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7481 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7482 view.update(cx, |view, cx| {
7483 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7484 view.delete_line(&DeleteLine, cx);
7485 assert_eq!(view.display_text(cx), "ghi\n");
7486 assert_eq!(
7487 view.selected_display_ranges(cx),
7488 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7489 );
7490 });
7491 }
7492
7493 #[gpui::test]
7494 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7495 populate_settings(cx);
7496 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7497 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7498 view.update(cx, |view, cx| {
7499 view.select_display_ranges(
7500 &[
7501 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7502 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7503 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7504 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7505 ],
7506 cx,
7507 );
7508 view.duplicate_line(&DuplicateLine, cx);
7509 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7510 assert_eq!(
7511 view.selected_display_ranges(cx),
7512 vec![
7513 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7514 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7515 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7516 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7517 ]
7518 );
7519 });
7520
7521 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7522 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7523 view.update(cx, |view, cx| {
7524 view.select_display_ranges(
7525 &[
7526 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7527 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7528 ],
7529 cx,
7530 );
7531 view.duplicate_line(&DuplicateLine, cx);
7532 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7533 assert_eq!(
7534 view.selected_display_ranges(cx),
7535 vec![
7536 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7537 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7538 ]
7539 );
7540 });
7541 }
7542
7543 #[gpui::test]
7544 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7545 populate_settings(cx);
7546 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7547 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7548 view.update(cx, |view, cx| {
7549 view.fold_ranges(
7550 vec![
7551 Point::new(0, 2)..Point::new(1, 2),
7552 Point::new(2, 3)..Point::new(4, 1),
7553 Point::new(7, 0)..Point::new(8, 4),
7554 ],
7555 cx,
7556 );
7557 view.select_display_ranges(
7558 &[
7559 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7560 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7561 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7562 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7563 ],
7564 cx,
7565 );
7566 assert_eq!(
7567 view.display_text(cx),
7568 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7569 );
7570
7571 view.move_line_up(&MoveLineUp, cx);
7572 assert_eq!(
7573 view.display_text(cx),
7574 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7575 );
7576 assert_eq!(
7577 view.selected_display_ranges(cx),
7578 vec![
7579 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7580 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7581 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7582 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7583 ]
7584 );
7585 });
7586
7587 view.update(cx, |view, cx| {
7588 view.move_line_down(&MoveLineDown, cx);
7589 assert_eq!(
7590 view.display_text(cx),
7591 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7592 );
7593 assert_eq!(
7594 view.selected_display_ranges(cx),
7595 vec![
7596 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7597 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7598 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7599 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7600 ]
7601 );
7602 });
7603
7604 view.update(cx, |view, cx| {
7605 view.move_line_down(&MoveLineDown, cx);
7606 assert_eq!(
7607 view.display_text(cx),
7608 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7609 );
7610 assert_eq!(
7611 view.selected_display_ranges(cx),
7612 vec![
7613 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7614 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7615 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7616 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7617 ]
7618 );
7619 });
7620
7621 view.update(cx, |view, cx| {
7622 view.move_line_up(&MoveLineUp, cx);
7623 assert_eq!(
7624 view.display_text(cx),
7625 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7626 );
7627 assert_eq!(
7628 view.selected_display_ranges(cx),
7629 vec![
7630 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7631 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7632 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7633 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7634 ]
7635 );
7636 });
7637 }
7638
7639 #[gpui::test]
7640 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7641 populate_settings(cx);
7642 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7643 let snapshot = buffer.read(cx).snapshot(cx);
7644 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7645 editor.update(cx, |editor, cx| {
7646 editor.insert_blocks(
7647 [BlockProperties {
7648 position: snapshot.anchor_after(Point::new(2, 0)),
7649 disposition: BlockDisposition::Below,
7650 height: 1,
7651 render: Arc::new(|_| Empty::new().boxed()),
7652 }],
7653 cx,
7654 );
7655 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7656 editor.move_line_down(&MoveLineDown, cx);
7657 });
7658 }
7659
7660 #[gpui::test]
7661 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7662 populate_settings(cx);
7663 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7664 let view = cx
7665 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7666 .1;
7667
7668 // Cut with three selections. Clipboard text is divided into three slices.
7669 view.update(cx, |view, cx| {
7670 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7671 view.cut(&Cut, cx);
7672 assert_eq!(view.display_text(cx), "two four six ");
7673 });
7674
7675 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7676 view.update(cx, |view, cx| {
7677 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7678 view.paste(&Paste, cx);
7679 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7680 assert_eq!(
7681 view.selected_display_ranges(cx),
7682 &[
7683 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7684 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7685 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7686 ]
7687 );
7688 });
7689
7690 // Paste again but with only two cursors. Since the number of cursors doesn't
7691 // match the number of slices in the clipboard, the entire clipboard text
7692 // is pasted at each cursor.
7693 view.update(cx, |view, cx| {
7694 view.select_ranges(vec![0..0, 31..31], None, cx);
7695 view.handle_input(&Input("( ".into()), cx);
7696 view.paste(&Paste, cx);
7697 view.handle_input(&Input(") ".into()), cx);
7698 assert_eq!(
7699 view.display_text(cx),
7700 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7701 );
7702 });
7703
7704 view.update(cx, |view, cx| {
7705 view.select_ranges(vec![0..0], None, cx);
7706 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7707 assert_eq!(
7708 view.display_text(cx),
7709 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7710 );
7711 });
7712
7713 // Cut with three selections, one of which is full-line.
7714 view.update(cx, |view, cx| {
7715 view.select_display_ranges(
7716 &[
7717 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7718 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7719 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7720 ],
7721 cx,
7722 );
7723 view.cut(&Cut, cx);
7724 assert_eq!(
7725 view.display_text(cx),
7726 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7727 );
7728 });
7729
7730 // Paste with three selections, noticing how the copied selection that was full-line
7731 // gets inserted before the second cursor.
7732 view.update(cx, |view, cx| {
7733 view.select_display_ranges(
7734 &[
7735 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7736 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7737 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7738 ],
7739 cx,
7740 );
7741 view.paste(&Paste, cx);
7742 assert_eq!(
7743 view.display_text(cx),
7744 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7745 );
7746 assert_eq!(
7747 view.selected_display_ranges(cx),
7748 &[
7749 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7750 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7751 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7752 ]
7753 );
7754 });
7755
7756 // Copy with a single cursor only, which writes the whole line into the clipboard.
7757 view.update(cx, |view, cx| {
7758 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7759 view.copy(&Copy, cx);
7760 });
7761
7762 // Paste with three selections, noticing how the copied full-line selection is inserted
7763 // before the empty selections but replaces the selection that is non-empty.
7764 view.update(cx, |view, cx| {
7765 view.select_display_ranges(
7766 &[
7767 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7768 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7769 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7770 ],
7771 cx,
7772 );
7773 view.paste(&Paste, cx);
7774 assert_eq!(
7775 view.display_text(cx),
7776 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7777 );
7778 assert_eq!(
7779 view.selected_display_ranges(cx),
7780 &[
7781 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7782 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7783 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7784 ]
7785 );
7786 });
7787 }
7788
7789 #[gpui::test]
7790 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7791 populate_settings(cx);
7792 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7793 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7794 view.update(cx, |view, cx| {
7795 view.select_all(&SelectAll, cx);
7796 assert_eq!(
7797 view.selected_display_ranges(cx),
7798 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7799 );
7800 });
7801 }
7802
7803 #[gpui::test]
7804 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7805 populate_settings(cx);
7806 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7807 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7808 view.update(cx, |view, cx| {
7809 view.select_display_ranges(
7810 &[
7811 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7812 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7813 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7814 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7815 ],
7816 cx,
7817 );
7818 view.select_line(&SelectLine, cx);
7819 assert_eq!(
7820 view.selected_display_ranges(cx),
7821 vec![
7822 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7823 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7824 ]
7825 );
7826 });
7827
7828 view.update(cx, |view, cx| {
7829 view.select_line(&SelectLine, cx);
7830 assert_eq!(
7831 view.selected_display_ranges(cx),
7832 vec![
7833 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7834 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7835 ]
7836 );
7837 });
7838
7839 view.update(cx, |view, cx| {
7840 view.select_line(&SelectLine, cx);
7841 assert_eq!(
7842 view.selected_display_ranges(cx),
7843 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7844 );
7845 });
7846 }
7847
7848 #[gpui::test]
7849 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7850 populate_settings(cx);
7851 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7852 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7853 view.update(cx, |view, cx| {
7854 view.fold_ranges(
7855 vec![
7856 Point::new(0, 2)..Point::new(1, 2),
7857 Point::new(2, 3)..Point::new(4, 1),
7858 Point::new(7, 0)..Point::new(8, 4),
7859 ],
7860 cx,
7861 );
7862 view.select_display_ranges(
7863 &[
7864 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7865 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7866 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7867 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7868 ],
7869 cx,
7870 );
7871 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7872 });
7873
7874 view.update(cx, |view, cx| {
7875 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7876 assert_eq!(
7877 view.display_text(cx),
7878 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7879 );
7880 assert_eq!(
7881 view.selected_display_ranges(cx),
7882 [
7883 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7884 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7885 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7886 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7887 ]
7888 );
7889 });
7890
7891 view.update(cx, |view, cx| {
7892 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7893 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7894 assert_eq!(
7895 view.display_text(cx),
7896 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7897 );
7898 assert_eq!(
7899 view.selected_display_ranges(cx),
7900 [
7901 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7902 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7903 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7904 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7905 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7906 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7907 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7908 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7909 ]
7910 );
7911 });
7912 }
7913
7914 #[gpui::test]
7915 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7916 populate_settings(cx);
7917 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7918 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7919
7920 view.update(cx, |view, cx| {
7921 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7922 });
7923 view.update(cx, |view, cx| {
7924 view.add_selection_above(&AddSelectionAbove, cx);
7925 assert_eq!(
7926 view.selected_display_ranges(cx),
7927 vec![
7928 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7929 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7930 ]
7931 );
7932 });
7933
7934 view.update(cx, |view, cx| {
7935 view.add_selection_above(&AddSelectionAbove, cx);
7936 assert_eq!(
7937 view.selected_display_ranges(cx),
7938 vec![
7939 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7940 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7941 ]
7942 );
7943 });
7944
7945 view.update(cx, |view, cx| {
7946 view.add_selection_below(&AddSelectionBelow, cx);
7947 assert_eq!(
7948 view.selected_display_ranges(cx),
7949 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7950 );
7951 });
7952
7953 view.update(cx, |view, cx| {
7954 view.add_selection_below(&AddSelectionBelow, cx);
7955 assert_eq!(
7956 view.selected_display_ranges(cx),
7957 vec![
7958 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7959 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7960 ]
7961 );
7962 });
7963
7964 view.update(cx, |view, cx| {
7965 view.add_selection_below(&AddSelectionBelow, cx);
7966 assert_eq!(
7967 view.selected_display_ranges(cx),
7968 vec![
7969 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7970 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7971 ]
7972 );
7973 });
7974
7975 view.update(cx, |view, cx| {
7976 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7977 });
7978 view.update(cx, |view, cx| {
7979 view.add_selection_below(&AddSelectionBelow, cx);
7980 assert_eq!(
7981 view.selected_display_ranges(cx),
7982 vec![
7983 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7984 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7985 ]
7986 );
7987 });
7988
7989 view.update(cx, |view, cx| {
7990 view.add_selection_below(&AddSelectionBelow, cx);
7991 assert_eq!(
7992 view.selected_display_ranges(cx),
7993 vec![
7994 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7995 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7996 ]
7997 );
7998 });
7999
8000 view.update(cx, |view, cx| {
8001 view.add_selection_above(&AddSelectionAbove, cx);
8002 assert_eq!(
8003 view.selected_display_ranges(cx),
8004 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8005 );
8006 });
8007
8008 view.update(cx, |view, cx| {
8009 view.add_selection_above(&AddSelectionAbove, cx);
8010 assert_eq!(
8011 view.selected_display_ranges(cx),
8012 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8013 );
8014 });
8015
8016 view.update(cx, |view, cx| {
8017 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8018 view.add_selection_below(&AddSelectionBelow, cx);
8019 assert_eq!(
8020 view.selected_display_ranges(cx),
8021 vec![
8022 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8023 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8024 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8025 ]
8026 );
8027 });
8028
8029 view.update(cx, |view, cx| {
8030 view.add_selection_below(&AddSelectionBelow, cx);
8031 assert_eq!(
8032 view.selected_display_ranges(cx),
8033 vec![
8034 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8035 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8036 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8037 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8038 ]
8039 );
8040 });
8041
8042 view.update(cx, |view, cx| {
8043 view.add_selection_above(&AddSelectionAbove, cx);
8044 assert_eq!(
8045 view.selected_display_ranges(cx),
8046 vec![
8047 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8048 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8049 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8050 ]
8051 );
8052 });
8053
8054 view.update(cx, |view, cx| {
8055 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8056 });
8057 view.update(cx, |view, cx| {
8058 view.add_selection_above(&AddSelectionAbove, cx);
8059 assert_eq!(
8060 view.selected_display_ranges(cx),
8061 vec![
8062 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8063 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8064 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8065 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8066 ]
8067 );
8068 });
8069
8070 view.update(cx, |view, cx| {
8071 view.add_selection_below(&AddSelectionBelow, cx);
8072 assert_eq!(
8073 view.selected_display_ranges(cx),
8074 vec![
8075 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8076 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8077 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8078 ]
8079 );
8080 });
8081 }
8082
8083 #[gpui::test]
8084 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8085 cx.update(populate_settings);
8086 let language = Arc::new(Language::new(
8087 LanguageConfig::default(),
8088 Some(tree_sitter_rust::language()),
8089 ));
8090
8091 let text = r#"
8092 use mod1::mod2::{mod3, mod4};
8093
8094 fn fn_1(param1: bool, param2: &str) {
8095 let var1 = "text";
8096 }
8097 "#
8098 .unindent();
8099
8100 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8101 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8102 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8103 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8104 .await;
8105
8106 view.update(cx, |view, cx| {
8107 view.select_display_ranges(
8108 &[
8109 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8110 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8111 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8112 ],
8113 cx,
8114 );
8115 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8116 });
8117 assert_eq!(
8118 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8119 &[
8120 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8121 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8122 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8123 ]
8124 );
8125
8126 view.update(cx, |view, cx| {
8127 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8128 });
8129 assert_eq!(
8130 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8131 &[
8132 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8133 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8134 ]
8135 );
8136
8137 view.update(cx, |view, cx| {
8138 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8139 });
8140 assert_eq!(
8141 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8142 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8143 );
8144
8145 // Trying to expand the selected syntax node one more time has no effect.
8146 view.update(cx, |view, cx| {
8147 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8148 });
8149 assert_eq!(
8150 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8151 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8152 );
8153
8154 view.update(cx, |view, cx| {
8155 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8156 });
8157 assert_eq!(
8158 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8159 &[
8160 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8161 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8162 ]
8163 );
8164
8165 view.update(cx, |view, cx| {
8166 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8167 });
8168 assert_eq!(
8169 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8170 &[
8171 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8172 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8173 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8174 ]
8175 );
8176
8177 view.update(cx, |view, cx| {
8178 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8179 });
8180 assert_eq!(
8181 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8182 &[
8183 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8184 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8185 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8186 ]
8187 );
8188
8189 // Trying to shrink the selected syntax node one more time has no effect.
8190 view.update(cx, |view, cx| {
8191 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8192 });
8193 assert_eq!(
8194 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8195 &[
8196 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8197 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8198 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8199 ]
8200 );
8201
8202 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8203 // a fold.
8204 view.update(cx, |view, cx| {
8205 view.fold_ranges(
8206 vec![
8207 Point::new(0, 21)..Point::new(0, 24),
8208 Point::new(3, 20)..Point::new(3, 22),
8209 ],
8210 cx,
8211 );
8212 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8213 });
8214 assert_eq!(
8215 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8216 &[
8217 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8218 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8219 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8220 ]
8221 );
8222 }
8223
8224 #[gpui::test]
8225 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8226 cx.update(populate_settings);
8227 let language = Arc::new(
8228 Language::new(
8229 LanguageConfig {
8230 brackets: vec![
8231 BracketPair {
8232 start: "{".to_string(),
8233 end: "}".to_string(),
8234 close: false,
8235 newline: true,
8236 },
8237 BracketPair {
8238 start: "(".to_string(),
8239 end: ")".to_string(),
8240 close: false,
8241 newline: true,
8242 },
8243 ],
8244 ..Default::default()
8245 },
8246 Some(tree_sitter_rust::language()),
8247 )
8248 .with_indents_query(
8249 r#"
8250 (_ "(" ")" @end) @indent
8251 (_ "{" "}" @end) @indent
8252 "#,
8253 )
8254 .unwrap(),
8255 );
8256
8257 let text = "fn a() {}";
8258
8259 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8260 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8261 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8262 editor
8263 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8264 .await;
8265
8266 editor.update(cx, |editor, cx| {
8267 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8268 editor.newline(&Newline, cx);
8269 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8270 assert_eq!(
8271 editor.selected_ranges(cx),
8272 &[
8273 Point::new(1, 4)..Point::new(1, 4),
8274 Point::new(3, 4)..Point::new(3, 4),
8275 Point::new(5, 0)..Point::new(5, 0)
8276 ]
8277 );
8278 });
8279 }
8280
8281 #[gpui::test]
8282 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8283 cx.update(populate_settings);
8284 let language = Arc::new(Language::new(
8285 LanguageConfig {
8286 brackets: vec![
8287 BracketPair {
8288 start: "{".to_string(),
8289 end: "}".to_string(),
8290 close: true,
8291 newline: true,
8292 },
8293 BracketPair {
8294 start: "/*".to_string(),
8295 end: " */".to_string(),
8296 close: true,
8297 newline: true,
8298 },
8299 ],
8300 autoclose_before: "})]".to_string(),
8301 ..Default::default()
8302 },
8303 Some(tree_sitter_rust::language()),
8304 ));
8305
8306 let text = r#"
8307 a
8308
8309 /
8310
8311 "#
8312 .unindent();
8313
8314 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8315 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8316 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8317 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8318 .await;
8319
8320 view.update(cx, |view, cx| {
8321 view.select_display_ranges(
8322 &[
8323 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8324 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8325 ],
8326 cx,
8327 );
8328
8329 view.handle_input(&Input("{".to_string()), cx);
8330 view.handle_input(&Input("{".to_string()), cx);
8331 view.handle_input(&Input("{".to_string()), cx);
8332 assert_eq!(
8333 view.text(cx),
8334 "
8335 {{{}}}
8336 {{{}}}
8337 /
8338
8339 "
8340 .unindent()
8341 );
8342
8343 view.move_right(&MoveRight, cx);
8344 view.handle_input(&Input("}".to_string()), cx);
8345 view.handle_input(&Input("}".to_string()), cx);
8346 view.handle_input(&Input("}".to_string()), cx);
8347 assert_eq!(
8348 view.text(cx),
8349 "
8350 {{{}}}}
8351 {{{}}}}
8352 /
8353
8354 "
8355 .unindent()
8356 );
8357
8358 view.undo(&Undo, cx);
8359 view.handle_input(&Input("/".to_string()), cx);
8360 view.handle_input(&Input("*".to_string()), cx);
8361 assert_eq!(
8362 view.text(cx),
8363 "
8364 /* */
8365 /* */
8366 /
8367
8368 "
8369 .unindent()
8370 );
8371
8372 view.undo(&Undo, cx);
8373 view.select_display_ranges(
8374 &[
8375 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8376 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8377 ],
8378 cx,
8379 );
8380 view.handle_input(&Input("*".to_string()), cx);
8381 assert_eq!(
8382 view.text(cx),
8383 "
8384 a
8385
8386 /*
8387 *
8388 "
8389 .unindent()
8390 );
8391
8392 // Don't autoclose if the next character isn't whitespace and isn't
8393 // listed in the language's "autoclose_before" section.
8394 view.finalize_last_transaction(cx);
8395 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8396 view.handle_input(&Input("{".to_string()), cx);
8397 assert_eq!(
8398 view.text(cx),
8399 "
8400 {a
8401
8402 /*
8403 *
8404 "
8405 .unindent()
8406 );
8407
8408 view.undo(&Undo, cx);
8409 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8410 view.handle_input(&Input("{".to_string()), cx);
8411 assert_eq!(
8412 view.text(cx),
8413 "
8414 {a}
8415
8416 /*
8417 *
8418 "
8419 .unindent()
8420 );
8421 assert_eq!(
8422 view.selected_display_ranges(cx),
8423 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8424 );
8425 });
8426 }
8427
8428 #[gpui::test]
8429 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8430 cx.update(populate_settings);
8431
8432 let text = "
8433 a. b
8434 a. b
8435 a. b
8436 "
8437 .unindent();
8438 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8439 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8440
8441 editor.update(cx, |editor, cx| {
8442 let buffer = &editor.snapshot(cx).buffer_snapshot;
8443 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8444 let insertion_ranges = [
8445 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8446 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8447 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8448 ];
8449
8450 editor
8451 .insert_snippet(&insertion_ranges, snippet, cx)
8452 .unwrap();
8453 assert_eq!(
8454 editor.text(cx),
8455 "
8456 a.f(one, two, three) b
8457 a.f(one, two, three) b
8458 a.f(one, two, three) b
8459 "
8460 .unindent()
8461 );
8462 assert_eq!(
8463 editor.selected_ranges::<Point>(cx),
8464 &[
8465 Point::new(0, 4)..Point::new(0, 7),
8466 Point::new(0, 14)..Point::new(0, 19),
8467 Point::new(1, 4)..Point::new(1, 7),
8468 Point::new(1, 14)..Point::new(1, 19),
8469 Point::new(2, 4)..Point::new(2, 7),
8470 Point::new(2, 14)..Point::new(2, 19),
8471 ]
8472 );
8473
8474 // Can't move earlier than the first tab stop
8475 editor.move_to_prev_snippet_tabstop(cx);
8476 assert_eq!(
8477 editor.selected_ranges::<Point>(cx),
8478 &[
8479 Point::new(0, 4)..Point::new(0, 7),
8480 Point::new(0, 14)..Point::new(0, 19),
8481 Point::new(1, 4)..Point::new(1, 7),
8482 Point::new(1, 14)..Point::new(1, 19),
8483 Point::new(2, 4)..Point::new(2, 7),
8484 Point::new(2, 14)..Point::new(2, 19),
8485 ]
8486 );
8487
8488 assert!(editor.move_to_next_snippet_tabstop(cx));
8489 assert_eq!(
8490 editor.selected_ranges::<Point>(cx),
8491 &[
8492 Point::new(0, 9)..Point::new(0, 12),
8493 Point::new(1, 9)..Point::new(1, 12),
8494 Point::new(2, 9)..Point::new(2, 12)
8495 ]
8496 );
8497
8498 editor.move_to_prev_snippet_tabstop(cx);
8499 assert_eq!(
8500 editor.selected_ranges::<Point>(cx),
8501 &[
8502 Point::new(0, 4)..Point::new(0, 7),
8503 Point::new(0, 14)..Point::new(0, 19),
8504 Point::new(1, 4)..Point::new(1, 7),
8505 Point::new(1, 14)..Point::new(1, 19),
8506 Point::new(2, 4)..Point::new(2, 7),
8507 Point::new(2, 14)..Point::new(2, 19),
8508 ]
8509 );
8510
8511 assert!(editor.move_to_next_snippet_tabstop(cx));
8512 assert!(editor.move_to_next_snippet_tabstop(cx));
8513 assert_eq!(
8514 editor.selected_ranges::<Point>(cx),
8515 &[
8516 Point::new(0, 20)..Point::new(0, 20),
8517 Point::new(1, 20)..Point::new(1, 20),
8518 Point::new(2, 20)..Point::new(2, 20)
8519 ]
8520 );
8521
8522 // As soon as the last tab stop is reached, snippet state is gone
8523 editor.move_to_prev_snippet_tabstop(cx);
8524 assert_eq!(
8525 editor.selected_ranges::<Point>(cx),
8526 &[
8527 Point::new(0, 20)..Point::new(0, 20),
8528 Point::new(1, 20)..Point::new(1, 20),
8529 Point::new(2, 20)..Point::new(2, 20)
8530 ]
8531 );
8532 });
8533 }
8534
8535 #[gpui::test]
8536 async fn test_completion(cx: &mut gpui::TestAppContext) {
8537 cx.update(populate_settings);
8538
8539 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8540 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8541 completion_provider: Some(lsp::CompletionOptions {
8542 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8543 ..Default::default()
8544 }),
8545 ..Default::default()
8546 });
8547 let language = Arc::new(Language::new(
8548 LanguageConfig {
8549 name: "Rust".into(),
8550 path_suffixes: vec!["rs".to_string()],
8551 language_server: Some(language_server_config),
8552 ..Default::default()
8553 },
8554 Some(tree_sitter_rust::language()),
8555 ));
8556
8557 let text = "
8558 one
8559 two
8560 three
8561 "
8562 .unindent();
8563
8564 let fs = FakeFs::new(cx.background().clone());
8565 fs.insert_file("/file.rs", text).await;
8566
8567 let project = Project::test(fs, cx);
8568 project.update(cx, |project, _| project.languages().add(language));
8569
8570 let worktree_id = project
8571 .update(cx, |project, cx| {
8572 project.find_or_create_local_worktree("/file.rs", true, cx)
8573 })
8574 .await
8575 .unwrap()
8576 .0
8577 .read_with(cx, |tree, _| tree.id());
8578 let buffer = project
8579 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8580 .await
8581 .unwrap();
8582 let mut fake_server = fake_servers.next().await.unwrap();
8583
8584 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8585 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8586
8587 editor.update(cx, |editor, cx| {
8588 editor.project = Some(project);
8589 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8590 editor.handle_input(&Input(".".to_string()), cx);
8591 });
8592
8593 handle_completion_request(
8594 &mut fake_server,
8595 "/file.rs",
8596 Point::new(0, 4),
8597 vec![
8598 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8599 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8600 ],
8601 )
8602 .await;
8603 editor
8604 .condition(&cx, |editor, _| editor.context_menu_visible())
8605 .await;
8606
8607 let apply_additional_edits = editor.update(cx, |editor, cx| {
8608 editor.move_down(&MoveDown, cx);
8609 let apply_additional_edits = editor
8610 .confirm_completion(&ConfirmCompletion(None), cx)
8611 .unwrap();
8612 assert_eq!(
8613 editor.text(cx),
8614 "
8615 one.second_completion
8616 two
8617 three
8618 "
8619 .unindent()
8620 );
8621 apply_additional_edits
8622 });
8623
8624 handle_resolve_completion_request(
8625 &mut fake_server,
8626 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8627 )
8628 .await;
8629 apply_additional_edits.await.unwrap();
8630 assert_eq!(
8631 editor.read_with(cx, |editor, cx| editor.text(cx)),
8632 "
8633 one.second_completion
8634 two
8635 three
8636 additional edit
8637 "
8638 .unindent()
8639 );
8640
8641 editor.update(cx, |editor, cx| {
8642 editor.select_ranges(
8643 [
8644 Point::new(1, 3)..Point::new(1, 3),
8645 Point::new(2, 5)..Point::new(2, 5),
8646 ],
8647 None,
8648 cx,
8649 );
8650
8651 editor.handle_input(&Input(" ".to_string()), cx);
8652 assert!(editor.context_menu.is_none());
8653 editor.handle_input(&Input("s".to_string()), cx);
8654 assert!(editor.context_menu.is_none());
8655 });
8656
8657 handle_completion_request(
8658 &mut fake_server,
8659 "/file.rs",
8660 Point::new(2, 7),
8661 vec![
8662 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8663 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8664 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8665 ],
8666 )
8667 .await;
8668 editor
8669 .condition(&cx, |editor, _| editor.context_menu_visible())
8670 .await;
8671
8672 editor.update(cx, |editor, cx| {
8673 editor.handle_input(&Input("i".to_string()), cx);
8674 });
8675
8676 handle_completion_request(
8677 &mut fake_server,
8678 "/file.rs",
8679 Point::new(2, 8),
8680 vec![
8681 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8682 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8683 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8684 ],
8685 )
8686 .await;
8687 editor
8688 .condition(&cx, |editor, _| editor.context_menu_visible())
8689 .await;
8690
8691 let apply_additional_edits = editor.update(cx, |editor, cx| {
8692 let apply_additional_edits = editor
8693 .confirm_completion(&ConfirmCompletion(None), cx)
8694 .unwrap();
8695 assert_eq!(
8696 editor.text(cx),
8697 "
8698 one.second_completion
8699 two sixth_completion
8700 three sixth_completion
8701 additional edit
8702 "
8703 .unindent()
8704 );
8705 apply_additional_edits
8706 });
8707 handle_resolve_completion_request(&mut fake_server, None).await;
8708 apply_additional_edits.await.unwrap();
8709
8710 async fn handle_completion_request(
8711 fake: &mut FakeLanguageServer,
8712 path: &'static str,
8713 position: Point,
8714 completions: Vec<(Range<Point>, &'static str)>,
8715 ) {
8716 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8717 assert_eq!(
8718 params.text_document_position.text_document.uri,
8719 lsp::Url::from_file_path(path).unwrap()
8720 );
8721 assert_eq!(
8722 params.text_document_position.position,
8723 lsp::Position::new(position.row, position.column)
8724 );
8725 Some(lsp::CompletionResponse::Array(
8726 completions
8727 .iter()
8728 .map(|(range, new_text)| lsp::CompletionItem {
8729 label: new_text.to_string(),
8730 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8731 range: lsp::Range::new(
8732 lsp::Position::new(range.start.row, range.start.column),
8733 lsp::Position::new(range.start.row, range.start.column),
8734 ),
8735 new_text: new_text.to_string(),
8736 })),
8737 ..Default::default()
8738 })
8739 .collect(),
8740 ))
8741 })
8742 .next()
8743 .await;
8744 }
8745
8746 async fn handle_resolve_completion_request(
8747 fake: &mut FakeLanguageServer,
8748 edit: Option<(Range<Point>, &'static str)>,
8749 ) {
8750 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8751 lsp::CompletionItem {
8752 additional_text_edits: edit.clone().map(|(range, new_text)| {
8753 vec![lsp::TextEdit::new(
8754 lsp::Range::new(
8755 lsp::Position::new(range.start.row, range.start.column),
8756 lsp::Position::new(range.end.row, range.end.column),
8757 ),
8758 new_text.to_string(),
8759 )]
8760 }),
8761 ..Default::default()
8762 }
8763 })
8764 .next()
8765 .await;
8766 }
8767 }
8768
8769 #[gpui::test]
8770 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8771 cx.update(populate_settings);
8772 let language = Arc::new(Language::new(
8773 LanguageConfig {
8774 line_comment: Some("// ".to_string()),
8775 ..Default::default()
8776 },
8777 Some(tree_sitter_rust::language()),
8778 ));
8779
8780 let text = "
8781 fn a() {
8782 //b();
8783 // c();
8784 // d();
8785 }
8786 "
8787 .unindent();
8788
8789 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8790 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8791 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8792
8793 view.update(cx, |editor, cx| {
8794 // If multiple selections intersect a line, the line is only
8795 // toggled once.
8796 editor.select_display_ranges(
8797 &[
8798 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8799 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8800 ],
8801 cx,
8802 );
8803 editor.toggle_comments(&ToggleComments, cx);
8804 assert_eq!(
8805 editor.text(cx),
8806 "
8807 fn a() {
8808 b();
8809 c();
8810 d();
8811 }
8812 "
8813 .unindent()
8814 );
8815
8816 // The comment prefix is inserted at the same column for every line
8817 // in a selection.
8818 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8819 editor.toggle_comments(&ToggleComments, cx);
8820 assert_eq!(
8821 editor.text(cx),
8822 "
8823 fn a() {
8824 // b();
8825 // c();
8826 // d();
8827 }
8828 "
8829 .unindent()
8830 );
8831
8832 // If a selection ends at the beginning of a line, that line is not toggled.
8833 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8834 editor.toggle_comments(&ToggleComments, cx);
8835 assert_eq!(
8836 editor.text(cx),
8837 "
8838 fn a() {
8839 // b();
8840 c();
8841 // d();
8842 }
8843 "
8844 .unindent()
8845 );
8846 });
8847 }
8848
8849 #[gpui::test]
8850 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8851 populate_settings(cx);
8852 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8853 let multibuffer = cx.add_model(|cx| {
8854 let mut multibuffer = MultiBuffer::new(0);
8855 multibuffer.push_excerpts(
8856 buffer.clone(),
8857 [
8858 Point::new(0, 0)..Point::new(0, 4),
8859 Point::new(1, 0)..Point::new(1, 4),
8860 ],
8861 cx,
8862 );
8863 multibuffer
8864 });
8865
8866 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8867
8868 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8869 view.update(cx, |view, cx| {
8870 assert_eq!(view.text(cx), "aaaa\nbbbb");
8871 view.select_ranges(
8872 [
8873 Point::new(0, 0)..Point::new(0, 0),
8874 Point::new(1, 0)..Point::new(1, 0),
8875 ],
8876 None,
8877 cx,
8878 );
8879
8880 view.handle_input(&Input("X".to_string()), cx);
8881 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8882 assert_eq!(
8883 view.selected_ranges(cx),
8884 [
8885 Point::new(0, 1)..Point::new(0, 1),
8886 Point::new(1, 1)..Point::new(1, 1),
8887 ]
8888 )
8889 });
8890 }
8891
8892 #[gpui::test]
8893 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8894 populate_settings(cx);
8895 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8896 let multibuffer = cx.add_model(|cx| {
8897 let mut multibuffer = MultiBuffer::new(0);
8898 multibuffer.push_excerpts(
8899 buffer,
8900 [
8901 Point::new(0, 0)..Point::new(1, 4),
8902 Point::new(1, 0)..Point::new(2, 4),
8903 ],
8904 cx,
8905 );
8906 multibuffer
8907 });
8908
8909 assert_eq!(
8910 multibuffer.read(cx).read(cx).text(),
8911 "aaaa\nbbbb\nbbbb\ncccc"
8912 );
8913
8914 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8915 view.update(cx, |view, cx| {
8916 view.select_ranges(
8917 [
8918 Point::new(1, 1)..Point::new(1, 1),
8919 Point::new(2, 3)..Point::new(2, 3),
8920 ],
8921 None,
8922 cx,
8923 );
8924
8925 view.handle_input(&Input("X".to_string()), cx);
8926 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8927 assert_eq!(
8928 view.selected_ranges(cx),
8929 [
8930 Point::new(1, 2)..Point::new(1, 2),
8931 Point::new(2, 5)..Point::new(2, 5),
8932 ]
8933 );
8934
8935 view.newline(&Newline, cx);
8936 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8937 assert_eq!(
8938 view.selected_ranges(cx),
8939 [
8940 Point::new(2, 0)..Point::new(2, 0),
8941 Point::new(6, 0)..Point::new(6, 0),
8942 ]
8943 );
8944 });
8945 }
8946
8947 #[gpui::test]
8948 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8949 populate_settings(cx);
8950 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8951 let mut excerpt1_id = None;
8952 let multibuffer = cx.add_model(|cx| {
8953 let mut multibuffer = MultiBuffer::new(0);
8954 excerpt1_id = multibuffer
8955 .push_excerpts(
8956 buffer.clone(),
8957 [
8958 Point::new(0, 0)..Point::new(1, 4),
8959 Point::new(1, 0)..Point::new(2, 4),
8960 ],
8961 cx,
8962 )
8963 .into_iter()
8964 .next();
8965 multibuffer
8966 });
8967 assert_eq!(
8968 multibuffer.read(cx).read(cx).text(),
8969 "aaaa\nbbbb\nbbbb\ncccc"
8970 );
8971 let (_, editor) = cx.add_window(Default::default(), |cx| {
8972 let mut editor = build_editor(multibuffer.clone(), cx);
8973 let snapshot = editor.snapshot(cx);
8974 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
8975 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
8976 assert_eq!(
8977 editor.selected_ranges(cx),
8978 [
8979 Point::new(1, 3)..Point::new(1, 3),
8980 Point::new(2, 1)..Point::new(2, 1),
8981 ]
8982 );
8983 editor
8984 });
8985
8986 // Refreshing selections is a no-op when excerpts haven't changed.
8987 editor.update(cx, |editor, cx| {
8988 editor.refresh_selections(cx);
8989 assert_eq!(
8990 editor.selected_ranges(cx),
8991 [
8992 Point::new(1, 3)..Point::new(1, 3),
8993 Point::new(2, 1)..Point::new(2, 1),
8994 ]
8995 );
8996 });
8997
8998 multibuffer.update(cx, |multibuffer, cx| {
8999 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9000 });
9001 editor.update(cx, |editor, cx| {
9002 // Removing an excerpt causes the first selection to become degenerate.
9003 assert_eq!(
9004 editor.selected_ranges(cx),
9005 [
9006 Point::new(0, 0)..Point::new(0, 0),
9007 Point::new(0, 1)..Point::new(0, 1)
9008 ]
9009 );
9010
9011 // Refreshing selections will relocate the first selection to the original buffer
9012 // location.
9013 editor.refresh_selections(cx);
9014 assert_eq!(
9015 editor.selected_ranges(cx),
9016 [
9017 Point::new(0, 1)..Point::new(0, 1),
9018 Point::new(0, 3)..Point::new(0, 3)
9019 ]
9020 );
9021 assert!(editor.pending_selection.is_some());
9022 });
9023 }
9024
9025 #[gpui::test]
9026 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9027 populate_settings(cx);
9028 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9029 let mut excerpt1_id = None;
9030 let multibuffer = cx.add_model(|cx| {
9031 let mut multibuffer = MultiBuffer::new(0);
9032 excerpt1_id = multibuffer
9033 .push_excerpts(
9034 buffer.clone(),
9035 [
9036 Point::new(0, 0)..Point::new(1, 4),
9037 Point::new(1, 0)..Point::new(2, 4),
9038 ],
9039 cx,
9040 )
9041 .into_iter()
9042 .next();
9043 multibuffer
9044 });
9045 assert_eq!(
9046 multibuffer.read(cx).read(cx).text(),
9047 "aaaa\nbbbb\nbbbb\ncccc"
9048 );
9049 let (_, editor) = cx.add_window(Default::default(), |cx| {
9050 let mut editor = build_editor(multibuffer.clone(), cx);
9051 let snapshot = editor.snapshot(cx);
9052 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9053 assert_eq!(
9054 editor.selected_ranges(cx),
9055 [Point::new(1, 3)..Point::new(1, 3)]
9056 );
9057 editor
9058 });
9059
9060 multibuffer.update(cx, |multibuffer, cx| {
9061 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9062 });
9063 editor.update(cx, |editor, cx| {
9064 assert_eq!(
9065 editor.selected_ranges(cx),
9066 [Point::new(0, 0)..Point::new(0, 0)]
9067 );
9068
9069 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9070 editor.refresh_selections(cx);
9071 assert_eq!(
9072 editor.selected_ranges(cx),
9073 [Point::new(0, 3)..Point::new(0, 3)]
9074 );
9075 assert!(editor.pending_selection.is_some());
9076 });
9077 }
9078
9079 #[gpui::test]
9080 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9081 cx.update(populate_settings);
9082 let language = Arc::new(Language::new(
9083 LanguageConfig {
9084 brackets: vec![
9085 BracketPair {
9086 start: "{".to_string(),
9087 end: "}".to_string(),
9088 close: true,
9089 newline: true,
9090 },
9091 BracketPair {
9092 start: "/* ".to_string(),
9093 end: " */".to_string(),
9094 close: true,
9095 newline: true,
9096 },
9097 ],
9098 ..Default::default()
9099 },
9100 Some(tree_sitter_rust::language()),
9101 ));
9102
9103 let text = concat!(
9104 "{ }\n", // Suppress rustfmt
9105 " x\n", //
9106 " /* */\n", //
9107 "x\n", //
9108 "{{} }\n", //
9109 );
9110
9111 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9112 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9113 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9114 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9115 .await;
9116
9117 view.update(cx, |view, cx| {
9118 view.select_display_ranges(
9119 &[
9120 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9121 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9122 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9123 ],
9124 cx,
9125 );
9126 view.newline(&Newline, cx);
9127
9128 assert_eq!(
9129 view.buffer().read(cx).read(cx).text(),
9130 concat!(
9131 "{ \n", // Suppress rustfmt
9132 "\n", //
9133 "}\n", //
9134 " x\n", //
9135 " /* \n", //
9136 " \n", //
9137 " */\n", //
9138 "x\n", //
9139 "{{} \n", //
9140 "}\n", //
9141 )
9142 );
9143 });
9144 }
9145
9146 #[gpui::test]
9147 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9148 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9149 populate_settings(cx);
9150 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9151
9152 editor.update(cx, |editor, cx| {
9153 struct Type1;
9154 struct Type2;
9155
9156 let buffer = buffer.read(cx).snapshot(cx);
9157
9158 let anchor_range = |range: Range<Point>| {
9159 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9160 };
9161
9162 editor.highlight_background::<Type1>(
9163 vec![
9164 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9165 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9166 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9167 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9168 ],
9169 Color::red(),
9170 cx,
9171 );
9172 editor.highlight_background::<Type2>(
9173 vec![
9174 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9175 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9176 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9177 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9178 ],
9179 Color::green(),
9180 cx,
9181 );
9182
9183 let snapshot = editor.snapshot(cx);
9184 let mut highlighted_ranges = editor.background_highlights_in_range(
9185 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9186 &snapshot,
9187 );
9188 // Enforce a consistent ordering based on color without relying on the ordering of the
9189 // highlight's `TypeId` which is non-deterministic.
9190 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9191 assert_eq!(
9192 highlighted_ranges,
9193 &[
9194 (
9195 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9196 Color::green(),
9197 ),
9198 (
9199 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9200 Color::green(),
9201 ),
9202 (
9203 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9204 Color::red(),
9205 ),
9206 (
9207 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9208 Color::red(),
9209 ),
9210 ]
9211 );
9212 assert_eq!(
9213 editor.background_highlights_in_range(
9214 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9215 &snapshot,
9216 ),
9217 &[(
9218 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9219 Color::red(),
9220 )]
9221 );
9222 });
9223 }
9224
9225 #[gpui::test]
9226 fn test_following(cx: &mut gpui::MutableAppContext) {
9227 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9228 populate_settings(cx);
9229
9230 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9231 let (_, follower) = cx.add_window(
9232 WindowOptions {
9233 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9234 ..Default::default()
9235 },
9236 |cx| build_editor(buffer.clone(), cx),
9237 );
9238
9239 let pending_update = Rc::new(RefCell::new(None));
9240 follower.update(cx, {
9241 let update = pending_update.clone();
9242 |_, cx| {
9243 cx.subscribe(&leader, move |_, leader, event, cx| {
9244 leader
9245 .read(cx)
9246 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9247 })
9248 .detach();
9249 }
9250 });
9251
9252 // Update the selections only
9253 leader.update(cx, |leader, cx| {
9254 leader.select_ranges([1..1], None, cx);
9255 });
9256 follower.update(cx, |follower, cx| {
9257 follower
9258 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9259 .unwrap();
9260 });
9261 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9262
9263 // Update the scroll position only
9264 leader.update(cx, |leader, cx| {
9265 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9266 });
9267 follower.update(cx, |follower, cx| {
9268 follower
9269 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9270 .unwrap();
9271 });
9272 assert_eq!(
9273 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9274 vec2f(1.5, 3.5)
9275 );
9276
9277 // Update the selections and scroll position
9278 leader.update(cx, |leader, cx| {
9279 leader.select_ranges([0..0], None, cx);
9280 leader.request_autoscroll(Autoscroll::Newest, cx);
9281 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9282 });
9283 follower.update(cx, |follower, cx| {
9284 let initial_scroll_position = follower.scroll_position(cx);
9285 follower
9286 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9287 .unwrap();
9288 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9289 assert!(follower.autoscroll_request.is_some());
9290 });
9291 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9292
9293 // Creating a pending selection that precedes another selection
9294 leader.update(cx, |leader, cx| {
9295 leader.select_ranges([1..1], None, cx);
9296 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9297 });
9298 follower.update(cx, |follower, cx| {
9299 follower
9300 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9301 .unwrap();
9302 });
9303 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9304
9305 // Extend the pending selection so that it surrounds another selection
9306 leader.update(cx, |leader, cx| {
9307 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9308 });
9309 follower.update(cx, |follower, cx| {
9310 follower
9311 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9312 .unwrap();
9313 });
9314 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9315 }
9316
9317 #[test]
9318 fn test_combine_syntax_and_fuzzy_match_highlights() {
9319 let string = "abcdefghijklmnop";
9320 let syntax_ranges = [
9321 (
9322 0..3,
9323 HighlightStyle {
9324 color: Some(Color::red()),
9325 ..Default::default()
9326 },
9327 ),
9328 (
9329 4..8,
9330 HighlightStyle {
9331 color: Some(Color::green()),
9332 ..Default::default()
9333 },
9334 ),
9335 ];
9336 let match_indices = [4, 6, 7, 8];
9337 assert_eq!(
9338 combine_syntax_and_fuzzy_match_highlights(
9339 &string,
9340 Default::default(),
9341 syntax_ranges.into_iter(),
9342 &match_indices,
9343 ),
9344 &[
9345 (
9346 0..3,
9347 HighlightStyle {
9348 color: Some(Color::red()),
9349 ..Default::default()
9350 },
9351 ),
9352 (
9353 4..5,
9354 HighlightStyle {
9355 color: Some(Color::green()),
9356 weight: Some(fonts::Weight::BOLD),
9357 ..Default::default()
9358 },
9359 ),
9360 (
9361 5..6,
9362 HighlightStyle {
9363 color: Some(Color::green()),
9364 ..Default::default()
9365 },
9366 ),
9367 (
9368 6..8,
9369 HighlightStyle {
9370 color: Some(Color::green()),
9371 weight: Some(fonts::Weight::BOLD),
9372 ..Default::default()
9373 },
9374 ),
9375 (
9376 8..9,
9377 HighlightStyle {
9378 weight: Some(fonts::Weight::BOLD),
9379 ..Default::default()
9380 },
9381 ),
9382 ]
9383 );
9384 }
9385
9386 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9387 let point = DisplayPoint::new(row as u32, column as u32);
9388 point..point
9389 }
9390
9391 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9392 Editor::new(EditorMode::Full, buffer, None, None, cx)
9393 }
9394
9395 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9396 let settings = Settings::test(cx);
9397 cx.set_global(settings);
9398 }
9399
9400 fn assert_selection_ranges(
9401 marked_text: &str,
9402 selection_marker_pairs: Vec<(char, char)>,
9403 view: &mut Editor,
9404 cx: &mut ViewContext<Editor>,
9405 ) {
9406 let snapshot = view.snapshot(cx).display_snapshot;
9407 let mut marker_chars = Vec::new();
9408 for (start, end) in selection_marker_pairs.iter() {
9409 marker_chars.push(*start);
9410 marker_chars.push(*end);
9411 }
9412 let (_, markers) = marked_text_by(marked_text, marker_chars);
9413 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9414 .iter()
9415 .map(|(start, end)| {
9416 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9417 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9418 start..end
9419 })
9420 .collect();
9421 assert_eq!(
9422 view.selected_display_ranges(cx),
9423 &asserted_ranges[..],
9424 "Assert selections are {}",
9425 marked_text
9426 );
9427 }
9428}
9429
9430trait RangeExt<T> {
9431 fn sorted(&self) -> Range<T>;
9432 fn to_inclusive(&self) -> RangeInclusive<T>;
9433}
9434
9435impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9436 fn sorted(&self) -> Self {
9437 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9438 }
9439
9440 fn to_inclusive(&self) -> RangeInclusive<T> {
9441 self.start.clone()..=self.end.clone()
9442 }
9443}