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