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