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