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