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