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!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
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", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, 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_start);
285 cx.add_action(Editor::delete_to_next_word_end);
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_start);
302 cx.add_action(Editor::move_to_next_word_end);
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_start);
312 cx.add_action(Editor::select_to_next_word_end);
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 InvalidationRegion {
348 fn ranges(&self) -> &[Range<Anchor>];
349}
350
351#[derive(Clone, Debug)]
352pub enum SelectPhase {
353 Begin {
354 position: DisplayPoint,
355 add: bool,
356 click_count: usize,
357 },
358 BeginColumnar {
359 position: DisplayPoint,
360 overshoot: u32,
361 },
362 Extend {
363 position: DisplayPoint,
364 click_count: usize,
365 },
366 Update {
367 position: DisplayPoint,
368 overshoot: u32,
369 scroll_position: Vector2F,
370 },
371 End,
372}
373
374#[derive(Clone, Debug)]
375pub enum SelectMode {
376 Character,
377 Word(Range<Anchor>),
378 Line(Range<Anchor>),
379 All,
380}
381
382#[derive(PartialEq, Eq)]
383pub enum Autoscroll {
384 Fit,
385 Center,
386 Newest,
387}
388
389#[derive(Copy, Clone, PartialEq, Eq)]
390pub enum EditorMode {
391 SingleLine,
392 AutoHeight { max_lines: usize },
393 Full,
394}
395
396#[derive(Clone)]
397pub enum SoftWrap {
398 None,
399 EditorWidth,
400 Column(u32),
401}
402
403#[derive(Clone)]
404pub struct EditorStyle {
405 pub text: TextStyle,
406 pub placeholder_text: Option<TextStyle>,
407 pub theme: theme::Editor,
408}
409
410type CompletionId = usize;
411
412pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
413
414type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
415
416pub struct Editor {
417 handle: WeakViewHandle<Self>,
418 buffer: ModelHandle<MultiBuffer>,
419 display_map: ModelHandle<DisplayMap>,
420 next_selection_id: usize,
421 selections: Arc<[Selection<Anchor>]>,
422 pending_selection: Option<PendingSelection>,
423 columnar_selection_tail: Option<Anchor>,
424 add_selections_state: Option<AddSelectionsState>,
425 select_next_state: Option<SelectNextState>,
426 selection_history:
427 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
428 autoclose_stack: InvalidationStack<BracketPairState>,
429 snippet_stack: InvalidationStack<SnippetState>,
430 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
431 active_diagnostics: Option<ActiveDiagnosticGroup>,
432 scroll_position: Vector2F,
433 scroll_top_anchor: Anchor,
434 autoscroll_request: Option<(Autoscroll, bool)>,
435 soft_wrap_mode_override: Option<settings::SoftWrap>,
436 get_field_editor_theme: Option<GetFieldEditorTheme>,
437 override_text_style: Option<Box<OverrideTextStyle>>,
438 project: Option<ModelHandle<Project>>,
439 focused: bool,
440 show_local_cursors: bool,
441 show_local_selections: bool,
442 blink_epoch: usize,
443 blinking_paused: bool,
444 mode: EditorMode,
445 vertical_scroll_margin: f32,
446 placeholder_text: Option<Arc<str>>,
447 highlighted_rows: Option<Range<u32>>,
448 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
449 nav_history: Option<ItemNavHistory>,
450 context_menu: Option<ContextMenu>,
451 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
452 next_completion_id: CompletionId,
453 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
454 code_actions_task: Option<Task<()>>,
455 document_highlights_task: Option<Task<()>>,
456 pending_rename: Option<RenameState>,
457 searchable: bool,
458 cursor_shape: CursorShape,
459 leader_replica_id: Option<u16>,
460}
461
462pub struct EditorSnapshot {
463 pub mode: EditorMode,
464 pub display_snapshot: DisplaySnapshot,
465 pub placeholder_text: Option<Arc<str>>,
466 is_focused: bool,
467 scroll_position: Vector2F,
468 scroll_top_anchor: Anchor,
469}
470
471#[derive(Clone)]
472pub struct PendingSelection {
473 selection: Selection<Anchor>,
474 mode: SelectMode,
475}
476
477struct AddSelectionsState {
478 above: bool,
479 stack: Vec<usize>,
480}
481
482struct SelectNextState {
483 query: AhoCorasick,
484 wordwise: bool,
485 done: bool,
486}
487
488struct BracketPairState {
489 ranges: Vec<Range<Anchor>>,
490 pair: BracketPair,
491}
492
493struct SnippetState {
494 ranges: Vec<Vec<Range<Anchor>>>,
495 active_index: usize,
496}
497
498pub struct RenameState {
499 pub range: Range<Anchor>,
500 pub old_name: String,
501 pub editor: ViewHandle<Editor>,
502 block_id: BlockId,
503}
504
505struct InvalidationStack<T>(Vec<T>);
506
507enum ContextMenu {
508 Completions(CompletionsMenu),
509 CodeActions(CodeActionsMenu),
510}
511
512impl ContextMenu {
513 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
514 if self.visible() {
515 match self {
516 ContextMenu::Completions(menu) => menu.select_prev(cx),
517 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
518 }
519 true
520 } else {
521 false
522 }
523 }
524
525 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
526 if self.visible() {
527 match self {
528 ContextMenu::Completions(menu) => menu.select_next(cx),
529 ContextMenu::CodeActions(menu) => menu.select_next(cx),
530 }
531 true
532 } else {
533 false
534 }
535 }
536
537 fn visible(&self) -> bool {
538 match self {
539 ContextMenu::Completions(menu) => menu.visible(),
540 ContextMenu::CodeActions(menu) => menu.visible(),
541 }
542 }
543
544 fn render(
545 &self,
546 cursor_position: DisplayPoint,
547 style: EditorStyle,
548 cx: &AppContext,
549 ) -> (DisplayPoint, ElementBox) {
550 match self {
551 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
552 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
553 }
554 }
555}
556
557struct CompletionsMenu {
558 id: CompletionId,
559 initial_position: Anchor,
560 buffer: ModelHandle<Buffer>,
561 completions: Arc<[Completion]>,
562 match_candidates: Vec<StringMatchCandidate>,
563 matches: Arc<[StringMatch]>,
564 selected_item: usize,
565 list: UniformListState,
566}
567
568impl CompletionsMenu {
569 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
570 if self.selected_item > 0 {
571 self.selected_item -= 1;
572 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
573 }
574 cx.notify();
575 }
576
577 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
578 if self.selected_item + 1 < self.matches.len() {
579 self.selected_item += 1;
580 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
581 }
582 cx.notify();
583 }
584
585 fn visible(&self) -> bool {
586 !self.matches.is_empty()
587 }
588
589 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
590 enum CompletionTag {}
591
592 let completions = self.completions.clone();
593 let matches = self.matches.clone();
594 let selected_item = self.selected_item;
595 let container_style = style.autocomplete.container;
596 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
597 let start_ix = range.start;
598 for (ix, mat) in matches[range].iter().enumerate() {
599 let completion = &completions[mat.candidate_id];
600 let item_ix = start_ix + ix;
601 items.push(
602 MouseEventHandler::new::<CompletionTag, _, _>(
603 mat.candidate_id,
604 cx,
605 |state, _| {
606 let item_style = if item_ix == selected_item {
607 style.autocomplete.selected_item
608 } else if state.hovered {
609 style.autocomplete.hovered_item
610 } else {
611 style.autocomplete.item
612 };
613
614 Text::new(completion.label.text.clone(), style.text.clone())
615 .with_soft_wrap(false)
616 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
617 &completion.label.text,
618 style.text.color.into(),
619 styled_runs_for_code_label(&completion.label, &style.syntax),
620 &mat.positions,
621 ))
622 .contained()
623 .with_style(item_style)
624 .boxed()
625 },
626 )
627 .with_cursor_style(CursorStyle::PointingHand)
628 .on_mouse_down(move |cx| {
629 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
630 })
631 .boxed(),
632 );
633 }
634 })
635 .with_width_from_item(
636 self.matches
637 .iter()
638 .enumerate()
639 .max_by_key(|(_, mat)| {
640 self.completions[mat.candidate_id]
641 .label
642 .text
643 .chars()
644 .count()
645 })
646 .map(|(ix, _)| ix),
647 )
648 .contained()
649 .with_style(container_style)
650 .boxed()
651 }
652
653 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
654 let mut matches = if let Some(query) = query {
655 fuzzy::match_strings(
656 &self.match_candidates,
657 query,
658 false,
659 100,
660 &Default::default(),
661 executor,
662 )
663 .await
664 } else {
665 self.match_candidates
666 .iter()
667 .enumerate()
668 .map(|(candidate_id, candidate)| StringMatch {
669 candidate_id,
670 score: Default::default(),
671 positions: Default::default(),
672 string: candidate.string.clone(),
673 })
674 .collect()
675 };
676 matches.sort_unstable_by_key(|mat| {
677 (
678 Reverse(OrderedFloat(mat.score)),
679 self.completions[mat.candidate_id].sort_key(),
680 )
681 });
682
683 for mat in &mut matches {
684 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
685 for position in &mut mat.positions {
686 *position += filter_start;
687 }
688 }
689
690 self.matches = matches.into();
691 }
692}
693
694#[derive(Clone)]
695struct CodeActionsMenu {
696 actions: Arc<[CodeAction]>,
697 buffer: ModelHandle<Buffer>,
698 selected_item: usize,
699 list: UniformListState,
700 deployed_from_indicator: bool,
701}
702
703impl CodeActionsMenu {
704 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
705 if self.selected_item > 0 {
706 self.selected_item -= 1;
707 cx.notify()
708 }
709 }
710
711 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
712 if self.selected_item + 1 < self.actions.len() {
713 self.selected_item += 1;
714 cx.notify()
715 }
716 }
717
718 fn visible(&self) -> bool {
719 !self.actions.is_empty()
720 }
721
722 fn render(
723 &self,
724 mut cursor_position: DisplayPoint,
725 style: EditorStyle,
726 ) -> (DisplayPoint, ElementBox) {
727 enum ActionTag {}
728
729 let container_style = style.autocomplete.container;
730 let actions = self.actions.clone();
731 let selected_item = self.selected_item;
732 let element =
733 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
734 let start_ix = range.start;
735 for (ix, action) in actions[range].iter().enumerate() {
736 let item_ix = start_ix + ix;
737 items.push(
738 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
739 let item_style = if item_ix == selected_item {
740 style.autocomplete.selected_item
741 } else if state.hovered {
742 style.autocomplete.hovered_item
743 } else {
744 style.autocomplete.item
745 };
746
747 Text::new(action.lsp_action.title.clone(), style.text.clone())
748 .with_soft_wrap(false)
749 .contained()
750 .with_style(item_style)
751 .boxed()
752 })
753 .with_cursor_style(CursorStyle::PointingHand)
754 .on_mouse_down(move |cx| {
755 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
756 })
757 .boxed(),
758 );
759 }
760 })
761 .with_width_from_item(
762 self.actions
763 .iter()
764 .enumerate()
765 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
766 .map(|(ix, _)| ix),
767 )
768 .contained()
769 .with_style(container_style)
770 .boxed();
771
772 if self.deployed_from_indicator {
773 *cursor_position.column_mut() = 0;
774 }
775
776 (cursor_position, element)
777 }
778}
779
780#[derive(Debug)]
781struct ActiveDiagnosticGroup {
782 primary_range: Range<Anchor>,
783 primary_message: String,
784 blocks: HashMap<BlockId, Diagnostic>,
785 is_valid: bool,
786}
787
788#[derive(Serialize, Deserialize)]
789struct ClipboardSelection {
790 len: usize,
791 is_entire_line: bool,
792}
793
794pub struct NavigationData {
795 anchor: Anchor,
796 offset: usize,
797}
798
799pub struct EditorCreated(pub ViewHandle<Editor>);
800
801impl Editor {
802 pub fn single_line(
803 field_editor_style: Option<GetFieldEditorTheme>,
804 cx: &mut ViewContext<Self>,
805 ) -> Self {
806 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
807 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
808 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
809 }
810
811 pub fn auto_height(
812 max_lines: usize,
813 field_editor_style: Option<GetFieldEditorTheme>,
814 cx: &mut ViewContext<Self>,
815 ) -> Self {
816 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
817 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
818 Self::new(
819 EditorMode::AutoHeight { max_lines },
820 buffer,
821 None,
822 field_editor_style,
823 cx,
824 )
825 }
826
827 pub fn for_buffer(
828 buffer: ModelHandle<Buffer>,
829 project: Option<ModelHandle<Project>>,
830 cx: &mut ViewContext<Self>,
831 ) -> Self {
832 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
833 Self::new(EditorMode::Full, buffer, project, None, cx)
834 }
835
836 pub fn for_multibuffer(
837 buffer: ModelHandle<MultiBuffer>,
838 project: Option<ModelHandle<Project>>,
839 cx: &mut ViewContext<Self>,
840 ) -> Self {
841 Self::new(EditorMode::Full, buffer, project, None, cx)
842 }
843
844 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
845 let mut clone = Self::new(
846 self.mode,
847 self.buffer.clone(),
848 self.project.clone(),
849 self.get_field_editor_theme,
850 cx,
851 );
852 clone.scroll_position = self.scroll_position;
853 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
854 clone.searchable = self.searchable;
855 clone
856 }
857
858 fn new(
859 mode: EditorMode,
860 buffer: ModelHandle<MultiBuffer>,
861 project: Option<ModelHandle<Project>>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = cx.global::<Settings>();
867 let style = build_style(&*settings, get_field_editor_theme, None, cx);
868 DisplayMap::new(
869 buffer.clone(),
870 settings.tab_size,
871 style.text.font_id,
872 style.text.font_size,
873 None,
874 2,
875 1,
876 cx,
877 )
878 });
879 cx.observe(&buffer, Self::on_buffer_changed).detach();
880 cx.subscribe(&buffer, Self::on_buffer_event).detach();
881 cx.observe(&display_map, Self::on_display_map_changed)
882 .detach();
883
884 let mut this = Self {
885 handle: cx.weak_handle(),
886 buffer,
887 display_map,
888 selections: Arc::from([]),
889 pending_selection: Some(PendingSelection {
890 selection: Selection {
891 id: 0,
892 start: Anchor::min(),
893 end: Anchor::min(),
894 reversed: false,
895 goal: SelectionGoal::None,
896 },
897 mode: SelectMode::Character,
898 }),
899 columnar_selection_tail: None,
900 next_selection_id: 1,
901 add_selections_state: None,
902 select_next_state: None,
903 selection_history: Default::default(),
904 autoclose_stack: Default::default(),
905 snippet_stack: Default::default(),
906 select_larger_syntax_node_stack: Vec::new(),
907 active_diagnostics: None,
908 soft_wrap_mode_override: None,
909 get_field_editor_theme,
910 project,
911 scroll_position: Vector2F::zero(),
912 scroll_top_anchor: Anchor::min(),
913 autoscroll_request: None,
914 focused: false,
915 show_local_cursors: false,
916 show_local_selections: true,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 background_highlights: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 override_text_style: None,
934 cursor_shape: Default::default(),
935 leader_replica_id: None,
936 };
937 this.end_selection(cx);
938
939 let editor_created_event = EditorCreated(cx.handle());
940 cx.emit_global(editor_created_event);
941
942 this
943 }
944
945 pub fn open_new(
946 workspace: &mut Workspace,
947 _: &workspace::OpenNew,
948 cx: &mut ViewContext<Workspace>,
949 ) {
950 let project = workspace.project().clone();
951 if project.read(cx).is_remote() {
952 cx.propagate_action();
953 } else if let Some(buffer) = project
954 .update(cx, |project, cx| project.create_buffer(cx))
955 .log_err()
956 {
957 workspace.add_item(
958 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
959 cx,
960 );
961 }
962 }
963
964 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
965 self.buffer.read(cx).replica_id()
966 }
967
968 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
969 &self.buffer
970 }
971
972 pub fn title(&self, cx: &AppContext) -> String {
973 self.buffer().read(cx).title(cx)
974 }
975
976 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
977 EditorSnapshot {
978 mode: self.mode,
979 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
980 scroll_position: self.scroll_position,
981 scroll_top_anchor: self.scroll_top_anchor.clone(),
982 placeholder_text: self.placeholder_text.clone(),
983 is_focused: self
984 .handle
985 .upgrade(cx)
986 .map_or(false, |handle| handle.is_focused(cx)),
987 }
988 }
989
990 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
991 self.buffer.read(cx).language(cx)
992 }
993
994 fn style(&self, cx: &AppContext) -> EditorStyle {
995 build_style(
996 cx.global::<Settings>(),
997 self.get_field_editor_theme,
998 self.override_text_style.as_deref(),
999 cx,
1000 )
1001 }
1002
1003 pub fn set_placeholder_text(
1004 &mut self,
1005 placeholder_text: impl Into<Arc<str>>,
1006 cx: &mut ViewContext<Self>,
1007 ) {
1008 self.placeholder_text = Some(placeholder_text.into());
1009 cx.notify();
1010 }
1011
1012 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1013 self.vertical_scroll_margin = margin_rows as f32;
1014 cx.notify();
1015 }
1016
1017 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1018 self.set_scroll_position_internal(scroll_position, true, cx);
1019 }
1020
1021 fn set_scroll_position_internal(
1022 &mut self,
1023 scroll_position: Vector2F,
1024 local: bool,
1025 cx: &mut ViewContext<Self>,
1026 ) {
1027 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1028
1029 if scroll_position.y() == 0. {
1030 self.scroll_top_anchor = Anchor::min();
1031 self.scroll_position = scroll_position;
1032 } else {
1033 let scroll_top_buffer_offset =
1034 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1035 let anchor = map
1036 .buffer_snapshot
1037 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1038 self.scroll_position = vec2f(
1039 scroll_position.x(),
1040 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1041 );
1042 self.scroll_top_anchor = anchor;
1043 }
1044
1045 cx.emit(Event::ScrollPositionChanged { local });
1046 cx.notify();
1047 }
1048
1049 fn set_scroll_top_anchor(
1050 &mut self,
1051 anchor: Anchor,
1052 position: Vector2F,
1053 cx: &mut ViewContext<Self>,
1054 ) {
1055 self.scroll_top_anchor = anchor;
1056 self.scroll_position = position;
1057 cx.emit(Event::ScrollPositionChanged { local: false });
1058 cx.notify();
1059 }
1060
1061 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1062 self.cursor_shape = cursor_shape;
1063 cx.notify();
1064 }
1065
1066 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1067 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1068 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1069 }
1070
1071 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1072 if max < self.scroll_position.x() {
1073 self.scroll_position.set_x(max);
1074 true
1075 } else {
1076 false
1077 }
1078 }
1079
1080 pub fn autoscroll_vertically(
1081 &mut self,
1082 viewport_height: f32,
1083 line_height: f32,
1084 cx: &mut ViewContext<Self>,
1085 ) -> bool {
1086 let visible_lines = viewport_height / line_height;
1087 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1088 let mut scroll_position =
1089 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1090 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1091 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1092 } else {
1093 display_map.max_point().row().saturating_sub(1) as f32
1094 };
1095 if scroll_position.y() > max_scroll_top {
1096 scroll_position.set_y(max_scroll_top);
1097 self.set_scroll_position(scroll_position, cx);
1098 }
1099
1100 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1101 autoscroll
1102 } else {
1103 return false;
1104 };
1105
1106 let first_cursor_top;
1107 let last_cursor_bottom;
1108 if let Some(highlighted_rows) = &self.highlighted_rows {
1109 first_cursor_top = highlighted_rows.start as f32;
1110 last_cursor_bottom = first_cursor_top + 1.;
1111 } else if autoscroll == Autoscroll::Newest {
1112 let newest_selection =
1113 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1114 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1115 last_cursor_bottom = first_cursor_top + 1.;
1116 } else {
1117 let selections = self.local_selections::<Point>(cx);
1118 first_cursor_top = selections
1119 .first()
1120 .unwrap()
1121 .head()
1122 .to_display_point(&display_map)
1123 .row() as f32;
1124 last_cursor_bottom = selections
1125 .last()
1126 .unwrap()
1127 .head()
1128 .to_display_point(&display_map)
1129 .row() as f32
1130 + 1.0;
1131 }
1132
1133 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1134 0.
1135 } else {
1136 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1137 };
1138 if margin < 0.0 {
1139 return false;
1140 }
1141
1142 match autoscroll {
1143 Autoscroll::Fit | Autoscroll::Newest => {
1144 let margin = margin.min(self.vertical_scroll_margin);
1145 let target_top = (first_cursor_top - margin).max(0.0);
1146 let target_bottom = last_cursor_bottom + margin;
1147 let start_row = scroll_position.y();
1148 let end_row = start_row + visible_lines;
1149
1150 if target_top < start_row {
1151 scroll_position.set_y(target_top);
1152 self.set_scroll_position_internal(scroll_position, local, cx);
1153 } else if target_bottom >= end_row {
1154 scroll_position.set_y(target_bottom - visible_lines);
1155 self.set_scroll_position_internal(scroll_position, local, cx);
1156 }
1157 }
1158 Autoscroll::Center => {
1159 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1160 self.set_scroll_position_internal(scroll_position, local, cx);
1161 }
1162 }
1163
1164 true
1165 }
1166
1167 pub fn autoscroll_horizontally(
1168 &mut self,
1169 start_row: u32,
1170 viewport_width: f32,
1171 scroll_width: f32,
1172 max_glyph_width: f32,
1173 layouts: &[text_layout::Line],
1174 cx: &mut ViewContext<Self>,
1175 ) -> bool {
1176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1177 let selections = self.local_selections::<Point>(cx);
1178
1179 let mut target_left;
1180 let mut target_right;
1181
1182 if self.highlighted_rows.is_some() {
1183 target_left = 0.0_f32;
1184 target_right = 0.0_f32;
1185 } else {
1186 target_left = std::f32::INFINITY;
1187 target_right = 0.0_f32;
1188 for selection in selections {
1189 let head = selection.head().to_display_point(&display_map);
1190 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1191 let start_column = head.column().saturating_sub(3);
1192 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1193 target_left = target_left.min(
1194 layouts[(head.row() - start_row) as usize]
1195 .x_for_index(start_column as usize),
1196 );
1197 target_right = target_right.max(
1198 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1199 + max_glyph_width,
1200 );
1201 }
1202 }
1203 }
1204
1205 target_right = target_right.min(scroll_width);
1206
1207 if target_right - target_left > viewport_width {
1208 return false;
1209 }
1210
1211 let scroll_left = self.scroll_position.x() * max_glyph_width;
1212 let scroll_right = scroll_left + viewport_width;
1213
1214 if target_left < scroll_left {
1215 self.scroll_position.set_x(target_left / max_glyph_width);
1216 true
1217 } else if target_right > scroll_right {
1218 self.scroll_position
1219 .set_x((target_right - viewport_width) / max_glyph_width);
1220 true
1221 } else {
1222 false
1223 }
1224 }
1225
1226 pub fn move_selections(
1227 &mut self,
1228 cx: &mut ViewContext<Self>,
1229 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1230 ) {
1231 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1232 let selections = self
1233 .local_selections::<Point>(cx)
1234 .into_iter()
1235 .map(|selection| {
1236 let mut selection = Selection {
1237 id: selection.id,
1238 start: selection.start.to_display_point(&display_map),
1239 end: selection.end.to_display_point(&display_map),
1240 reversed: selection.reversed,
1241 goal: selection.goal,
1242 };
1243 move_selection(&display_map, &mut selection);
1244 Selection {
1245 id: selection.id,
1246 start: selection.start.to_point(&display_map),
1247 end: selection.end.to_point(&display_map),
1248 reversed: selection.reversed,
1249 goal: selection.goal,
1250 }
1251 })
1252 .collect();
1253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1254 }
1255
1256 pub fn move_selection_heads(
1257 &mut self,
1258 cx: &mut ViewContext<Self>,
1259 update_head: impl Fn(
1260 &DisplaySnapshot,
1261 DisplayPoint,
1262 SelectionGoal,
1263 ) -> (DisplayPoint, SelectionGoal),
1264 ) {
1265 self.move_selections(cx, |map, selection| {
1266 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1267 selection.set_head(new_head, new_goal);
1268 });
1269 }
1270
1271 pub fn move_cursors(
1272 &mut self,
1273 cx: &mut ViewContext<Self>,
1274 update_cursor_position: impl Fn(
1275 &DisplaySnapshot,
1276 DisplayPoint,
1277 SelectionGoal,
1278 ) -> (DisplayPoint, SelectionGoal),
1279 ) {
1280 self.move_selections(cx, |map, selection| {
1281 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1282 selection.collapse_to(cursor, new_goal)
1283 });
1284 }
1285
1286 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1287 self.hide_context_menu(cx);
1288
1289 match phase {
1290 SelectPhase::Begin {
1291 position,
1292 add,
1293 click_count,
1294 } => self.begin_selection(*position, *add, *click_count, cx),
1295 SelectPhase::BeginColumnar {
1296 position,
1297 overshoot,
1298 } => self.begin_columnar_selection(*position, *overshoot, cx),
1299 SelectPhase::Extend {
1300 position,
1301 click_count,
1302 } => self.extend_selection(*position, *click_count, cx),
1303 SelectPhase::Update {
1304 position,
1305 overshoot,
1306 scroll_position,
1307 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1308 SelectPhase::End => self.end_selection(cx),
1309 }
1310 }
1311
1312 fn extend_selection(
1313 &mut self,
1314 position: DisplayPoint,
1315 click_count: usize,
1316 cx: &mut ViewContext<Self>,
1317 ) {
1318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1319 let tail = self
1320 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1321 .tail();
1322 self.begin_selection(position, false, click_count, cx);
1323
1324 let position = position.to_offset(&display_map, Bias::Left);
1325 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1326 let mut pending = self.pending_selection.clone().unwrap();
1327
1328 if position >= tail {
1329 pending.selection.start = tail_anchor.clone();
1330 } else {
1331 pending.selection.end = tail_anchor.clone();
1332 pending.selection.reversed = true;
1333 }
1334
1335 match &mut pending.mode {
1336 SelectMode::Word(range) | SelectMode::Line(range) => {
1337 *range = tail_anchor.clone()..tail_anchor
1338 }
1339 _ => {}
1340 }
1341
1342 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1343 }
1344
1345 fn begin_selection(
1346 &mut self,
1347 position: DisplayPoint,
1348 add: bool,
1349 click_count: usize,
1350 cx: &mut ViewContext<Self>,
1351 ) {
1352 if !self.focused {
1353 cx.focus_self();
1354 cx.emit(Event::Activate);
1355 }
1356
1357 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1358 let buffer = &display_map.buffer_snapshot;
1359 let newest_selection = self.newest_anchor_selection().clone();
1360
1361 let start;
1362 let end;
1363 let mode;
1364 match click_count {
1365 1 => {
1366 start = buffer.anchor_before(position.to_point(&display_map));
1367 end = start.clone();
1368 mode = SelectMode::Character;
1369 }
1370 2 => {
1371 let range = movement::surrounding_word(&display_map, position);
1372 start = buffer.anchor_before(range.start.to_point(&display_map));
1373 end = buffer.anchor_before(range.end.to_point(&display_map));
1374 mode = SelectMode::Word(start.clone()..end.clone());
1375 }
1376 3 => {
1377 let position = display_map
1378 .clip_point(position, Bias::Left)
1379 .to_point(&display_map);
1380 let line_start = display_map.prev_line_boundary(position).0;
1381 let next_line_start = buffer.clip_point(
1382 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1383 Bias::Left,
1384 );
1385 start = buffer.anchor_before(line_start);
1386 end = buffer.anchor_before(next_line_start);
1387 mode = SelectMode::Line(start.clone()..end.clone());
1388 }
1389 _ => {
1390 start = buffer.anchor_before(0);
1391 end = buffer.anchor_before(buffer.len());
1392 mode = SelectMode::All;
1393 }
1394 }
1395
1396 let selection = Selection {
1397 id: post_inc(&mut self.next_selection_id),
1398 start,
1399 end,
1400 reversed: false,
1401 goal: SelectionGoal::None,
1402 };
1403
1404 let mut selections;
1405 if add {
1406 selections = self.selections.clone();
1407 // Remove the newest selection if it was added due to a previous mouse up
1408 // within this multi-click.
1409 if click_count > 1 {
1410 selections = self
1411 .selections
1412 .iter()
1413 .filter(|selection| selection.id != newest_selection.id)
1414 .cloned()
1415 .collect();
1416 }
1417 } else {
1418 selections = Arc::from([]);
1419 }
1420 self.set_selections(
1421 selections,
1422 Some(PendingSelection { selection, mode }),
1423 true,
1424 cx,
1425 );
1426
1427 cx.notify();
1428 }
1429
1430 fn begin_columnar_selection(
1431 &mut self,
1432 position: DisplayPoint,
1433 overshoot: u32,
1434 cx: &mut ViewContext<Self>,
1435 ) {
1436 if !self.focused {
1437 cx.focus_self();
1438 cx.emit(Event::Activate);
1439 }
1440
1441 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1442 let tail = self
1443 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1444 .tail();
1445 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1446
1447 self.select_columns(
1448 tail.to_display_point(&display_map),
1449 position,
1450 overshoot,
1451 &display_map,
1452 cx,
1453 );
1454 }
1455
1456 fn update_selection(
1457 &mut self,
1458 position: DisplayPoint,
1459 overshoot: u32,
1460 scroll_position: Vector2F,
1461 cx: &mut ViewContext<Self>,
1462 ) {
1463 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1464
1465 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1466 let tail = tail.to_display_point(&display_map);
1467 self.select_columns(tail, position, overshoot, &display_map, cx);
1468 } else if let Some(mut pending) = self.pending_selection.clone() {
1469 let buffer = self.buffer.read(cx).snapshot(cx);
1470 let head;
1471 let tail;
1472 match &pending.mode {
1473 SelectMode::Character => {
1474 head = position.to_point(&display_map);
1475 tail = pending.selection.tail().to_point(&buffer);
1476 }
1477 SelectMode::Word(original_range) => {
1478 let original_display_range = original_range.start.to_display_point(&display_map)
1479 ..original_range.end.to_display_point(&display_map);
1480 let original_buffer_range = original_display_range.start.to_point(&display_map)
1481 ..original_display_range.end.to_point(&display_map);
1482 if movement::is_inside_word(&display_map, position)
1483 || original_display_range.contains(&position)
1484 {
1485 let word_range = movement::surrounding_word(&display_map, position);
1486 if word_range.start < original_display_range.start {
1487 head = word_range.start.to_point(&display_map);
1488 } else {
1489 head = word_range.end.to_point(&display_map);
1490 }
1491 } else {
1492 head = position.to_point(&display_map);
1493 }
1494
1495 if head <= original_buffer_range.start {
1496 tail = original_buffer_range.end;
1497 } else {
1498 tail = original_buffer_range.start;
1499 }
1500 }
1501 SelectMode::Line(original_range) => {
1502 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1503
1504 let position = display_map
1505 .clip_point(position, Bias::Left)
1506 .to_point(&display_map);
1507 let line_start = display_map.prev_line_boundary(position).0;
1508 let next_line_start = buffer.clip_point(
1509 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1510 Bias::Left,
1511 );
1512
1513 if line_start < original_range.start {
1514 head = line_start
1515 } else {
1516 head = next_line_start
1517 }
1518
1519 if head <= original_range.start {
1520 tail = original_range.end;
1521 } else {
1522 tail = original_range.start;
1523 }
1524 }
1525 SelectMode::All => {
1526 return;
1527 }
1528 };
1529
1530 if head < tail {
1531 pending.selection.start = buffer.anchor_before(head);
1532 pending.selection.end = buffer.anchor_before(tail);
1533 pending.selection.reversed = true;
1534 } else {
1535 pending.selection.start = buffer.anchor_before(tail);
1536 pending.selection.end = buffer.anchor_before(head);
1537 pending.selection.reversed = false;
1538 }
1539 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1540 } else {
1541 log::error!("update_selection dispatched with no pending selection");
1542 return;
1543 }
1544
1545 self.set_scroll_position(scroll_position, cx);
1546 cx.notify();
1547 }
1548
1549 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1550 self.columnar_selection_tail.take();
1551 if self.pending_selection.is_some() {
1552 let selections = self.local_selections::<usize>(cx);
1553 self.update_selections(selections, None, cx);
1554 }
1555 }
1556
1557 fn select_columns(
1558 &mut self,
1559 tail: DisplayPoint,
1560 head: DisplayPoint,
1561 overshoot: u32,
1562 display_map: &DisplaySnapshot,
1563 cx: &mut ViewContext<Self>,
1564 ) {
1565 let start_row = cmp::min(tail.row(), head.row());
1566 let end_row = cmp::max(tail.row(), head.row());
1567 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1568 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1569 let reversed = start_column < tail.column();
1570
1571 let selections = (start_row..=end_row)
1572 .filter_map(|row| {
1573 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1574 let start = display_map
1575 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1576 .to_point(&display_map);
1577 let end = display_map
1578 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1579 .to_point(&display_map);
1580 Some(Selection {
1581 id: post_inc(&mut self.next_selection_id),
1582 start,
1583 end,
1584 reversed,
1585 goal: SelectionGoal::None,
1586 })
1587 } else {
1588 None
1589 }
1590 })
1591 .collect::<Vec<_>>();
1592
1593 self.update_selections(selections, None, cx);
1594 cx.notify();
1595 }
1596
1597 pub fn is_selecting(&self) -> bool {
1598 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1599 }
1600
1601 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1602 if self.take_rename(false, cx).is_some() {
1603 return;
1604 }
1605
1606 if self.hide_context_menu(cx).is_some() {
1607 return;
1608 }
1609
1610 if self.snippet_stack.pop().is_some() {
1611 return;
1612 }
1613
1614 if self.mode != EditorMode::Full {
1615 cx.propagate_action();
1616 return;
1617 }
1618
1619 if self.active_diagnostics.is_some() {
1620 self.dismiss_diagnostics(cx);
1621 } else if let Some(pending) = self.pending_selection.clone() {
1622 let mut selections = self.selections.clone();
1623 if selections.is_empty() {
1624 selections = Arc::from([pending.selection]);
1625 }
1626 self.set_selections(selections, None, true, cx);
1627 self.request_autoscroll(Autoscroll::Fit, cx);
1628 } else {
1629 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1630 if self.selection_count() == 1 {
1631 if oldest_selection.is_empty() {
1632 cx.propagate_action();
1633 return;
1634 }
1635
1636 oldest_selection.start = oldest_selection.head().clone();
1637 oldest_selection.end = oldest_selection.head().clone();
1638 }
1639 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1640 }
1641 }
1642
1643 #[cfg(any(test, feature = "test-support"))]
1644 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1645 &self,
1646 cx: &AppContext,
1647 ) -> Vec<Range<D>> {
1648 self.local_selections::<D>(cx)
1649 .iter()
1650 .map(|s| {
1651 if s.reversed {
1652 s.end.clone()..s.start.clone()
1653 } else {
1654 s.start.clone()..s.end.clone()
1655 }
1656 })
1657 .collect()
1658 }
1659
1660 #[cfg(any(test, feature = "test-support"))]
1661 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1662 let display_map = self
1663 .display_map
1664 .update(cx, |display_map, cx| display_map.snapshot(cx));
1665 self.selections
1666 .iter()
1667 .chain(
1668 self.pending_selection
1669 .as_ref()
1670 .map(|pending| &pending.selection),
1671 )
1672 .map(|s| {
1673 if s.reversed {
1674 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1675 } else {
1676 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1677 }
1678 })
1679 .collect()
1680 }
1681
1682 pub fn select_ranges<I, T>(
1683 &mut self,
1684 ranges: I,
1685 autoscroll: Option<Autoscroll>,
1686 cx: &mut ViewContext<Self>,
1687 ) where
1688 I: IntoIterator<Item = Range<T>>,
1689 T: ToOffset,
1690 {
1691 let buffer = self.buffer.read(cx).snapshot(cx);
1692 let selections = ranges
1693 .into_iter()
1694 .map(|range| {
1695 let mut start = range.start.to_offset(&buffer);
1696 let mut end = range.end.to_offset(&buffer);
1697 let reversed = if start > end {
1698 mem::swap(&mut start, &mut end);
1699 true
1700 } else {
1701 false
1702 };
1703 Selection {
1704 id: post_inc(&mut self.next_selection_id),
1705 start,
1706 end,
1707 reversed,
1708 goal: SelectionGoal::None,
1709 }
1710 })
1711 .collect::<Vec<_>>();
1712 self.update_selections(selections, autoscroll, cx);
1713 }
1714
1715 #[cfg(any(test, feature = "test-support"))]
1716 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1717 where
1718 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1719 {
1720 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1721 let selections = ranges
1722 .into_iter()
1723 .map(|range| {
1724 let mut start = range.start;
1725 let mut end = range.end;
1726 let reversed = if start > end {
1727 mem::swap(&mut start, &mut end);
1728 true
1729 } else {
1730 false
1731 };
1732 Selection {
1733 id: post_inc(&mut self.next_selection_id),
1734 start: start.to_point(&display_map),
1735 end: end.to_point(&display_map),
1736 reversed,
1737 goal: SelectionGoal::None,
1738 }
1739 })
1740 .collect();
1741 self.update_selections(selections, None, cx);
1742 }
1743
1744 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1745 let text = action.0.as_ref();
1746 if !self.skip_autoclose_end(text, cx) {
1747 self.start_transaction(cx);
1748 if !self.surround_with_bracket_pair(text, cx) {
1749 self.insert(text, cx);
1750 self.autoclose_bracket_pairs(cx);
1751 }
1752 self.end_transaction(cx);
1753 self.trigger_completion_on_input(text, cx);
1754 }
1755 }
1756
1757 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1758 self.start_transaction(cx);
1759 let mut old_selections = SmallVec::<[_; 32]>::new();
1760 {
1761 let selections = self.local_selections::<usize>(cx);
1762 let buffer = self.buffer.read(cx).snapshot(cx);
1763 for selection in selections.iter() {
1764 let start_point = selection.start.to_point(&buffer);
1765 let indent = buffer
1766 .indent_column_for_line(start_point.row)
1767 .min(start_point.column);
1768 let start = selection.start;
1769 let end = selection.end;
1770
1771 let mut insert_extra_newline = false;
1772 if let Some(language) = buffer.language() {
1773 let leading_whitespace_len = buffer
1774 .reversed_chars_at(start)
1775 .take_while(|c| c.is_whitespace() && *c != '\n')
1776 .map(|c| c.len_utf8())
1777 .sum::<usize>();
1778
1779 let trailing_whitespace_len = buffer
1780 .chars_at(end)
1781 .take_while(|c| c.is_whitespace() && *c != '\n')
1782 .map(|c| c.len_utf8())
1783 .sum::<usize>();
1784
1785 insert_extra_newline = language.brackets().iter().any(|pair| {
1786 let pair_start = pair.start.trim_end();
1787 let pair_end = pair.end.trim_start();
1788
1789 pair.newline
1790 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1791 && buffer.contains_str_at(
1792 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1793 pair_start,
1794 )
1795 });
1796 }
1797
1798 old_selections.push((
1799 selection.id,
1800 buffer.anchor_after(end),
1801 start..end,
1802 indent,
1803 insert_extra_newline,
1804 ));
1805 }
1806 }
1807
1808 self.buffer.update(cx, |buffer, cx| {
1809 let mut delta = 0_isize;
1810 let mut pending_edit: Option<PendingEdit> = None;
1811 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1812 if pending_edit.as_ref().map_or(false, |pending| {
1813 pending.indent != *indent
1814 || pending.insert_extra_newline != *insert_extra_newline
1815 }) {
1816 let pending = pending_edit.take().unwrap();
1817 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1818 new_text.push('\n');
1819 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1820 if pending.insert_extra_newline {
1821 new_text = new_text.repeat(2);
1822 }
1823 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1824 delta += pending.delta;
1825 }
1826
1827 let start = (range.start as isize + delta) as usize;
1828 let end = (range.end as isize + delta) as usize;
1829 let mut text_len = *indent as usize + 1;
1830 if *insert_extra_newline {
1831 text_len *= 2;
1832 }
1833
1834 let pending = pending_edit.get_or_insert_with(Default::default);
1835 pending.delta += text_len as isize - (end - start) as isize;
1836 pending.indent = *indent;
1837 pending.insert_extra_newline = *insert_extra_newline;
1838 pending.ranges.push(start..end);
1839 }
1840
1841 let pending = pending_edit.unwrap();
1842 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1843 new_text.push('\n');
1844 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1845 if pending.insert_extra_newline {
1846 new_text = new_text.repeat(2);
1847 }
1848 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1849
1850 let buffer = buffer.read(cx);
1851 self.selections = self
1852 .selections
1853 .iter()
1854 .cloned()
1855 .zip(old_selections)
1856 .map(
1857 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1858 let mut cursor = end_anchor.to_point(&buffer);
1859 if insert_extra_newline {
1860 cursor.row -= 1;
1861 cursor.column = buffer.line_len(cursor.row);
1862 }
1863 let anchor = buffer.anchor_after(cursor);
1864 new_selection.start = anchor.clone();
1865 new_selection.end = anchor;
1866 new_selection
1867 },
1868 )
1869 .collect();
1870 });
1871
1872 self.request_autoscroll(Autoscroll::Fit, cx);
1873 self.end_transaction(cx);
1874
1875 #[derive(Default)]
1876 struct PendingEdit {
1877 indent: u32,
1878 insert_extra_newline: bool,
1879 delta: isize,
1880 ranges: SmallVec<[Range<usize>; 32]>,
1881 }
1882 }
1883
1884 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1885 self.start_transaction(cx);
1886
1887 let old_selections = self.local_selections::<usize>(cx);
1888 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1889 let anchors = {
1890 let snapshot = buffer.read(cx);
1891 old_selections
1892 .iter()
1893 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1894 .collect::<Vec<_>>()
1895 };
1896 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1897 buffer.edit_with_autoindent(edit_ranges, text, cx);
1898 anchors
1899 });
1900
1901 let selections = {
1902 let snapshot = self.buffer.read(cx).read(cx);
1903 selection_anchors
1904 .into_iter()
1905 .map(|(id, goal, position)| {
1906 let position = position.to_offset(&snapshot);
1907 Selection {
1908 id,
1909 start: position,
1910 end: position,
1911 goal,
1912 reversed: false,
1913 }
1914 })
1915 .collect()
1916 };
1917 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1918 self.end_transaction(cx);
1919 }
1920
1921 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1922 let selection = self.newest_anchor_selection();
1923 if self
1924 .buffer
1925 .read(cx)
1926 .is_completion_trigger(selection.head(), text, cx)
1927 {
1928 self.show_completions(&ShowCompletions, cx);
1929 } else {
1930 self.hide_context_menu(cx);
1931 }
1932 }
1933
1934 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1935 let snapshot = self.buffer.read(cx).snapshot(cx);
1936 if let Some(pair) = snapshot
1937 .language()
1938 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1939 .cloned()
1940 {
1941 if self
1942 .local_selections::<usize>(cx)
1943 .iter()
1944 .any(|selection| selection.is_empty())
1945 {
1946 false
1947 } else {
1948 let mut selections = self.selections.to_vec();
1949 for selection in &mut selections {
1950 selection.end = selection.end.bias_left(&snapshot);
1951 }
1952 drop(snapshot);
1953
1954 self.buffer.update(cx, |buffer, cx| {
1955 buffer.edit(
1956 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1957 &pair.start,
1958 cx,
1959 );
1960 buffer.edit(
1961 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1962 &pair.end,
1963 cx,
1964 );
1965 });
1966
1967 let snapshot = self.buffer.read(cx).read(cx);
1968 for selection in &mut selections {
1969 selection.end = selection.end.bias_right(&snapshot);
1970 }
1971 drop(snapshot);
1972
1973 self.set_selections(selections.into(), None, true, cx);
1974 true
1975 }
1976 } else {
1977 false
1978 }
1979 }
1980
1981 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1982 let selections = self.local_selections::<usize>(cx);
1983 let mut bracket_pair_state = None;
1984 let mut new_selections = None;
1985 self.buffer.update(cx, |buffer, cx| {
1986 let mut snapshot = buffer.snapshot(cx);
1987 let left_biased_selections = selections
1988 .iter()
1989 .map(|selection| Selection {
1990 id: selection.id,
1991 start: snapshot.anchor_before(selection.start),
1992 end: snapshot.anchor_before(selection.end),
1993 reversed: selection.reversed,
1994 goal: selection.goal,
1995 })
1996 .collect::<Vec<_>>();
1997
1998 let autoclose_pair = snapshot.language().and_then(|language| {
1999 let first_selection_start = selections.first().unwrap().start;
2000 let pair = language.brackets().iter().find(|pair| {
2001 snapshot.contains_str_at(
2002 first_selection_start.saturating_sub(pair.start.len()),
2003 &pair.start,
2004 )
2005 });
2006 pair.and_then(|pair| {
2007 let should_autoclose = selections.iter().all(|selection| {
2008 // Ensure all selections are parked at the end of a pair start.
2009 if snapshot.contains_str_at(
2010 selection.start.saturating_sub(pair.start.len()),
2011 &pair.start,
2012 ) {
2013 snapshot
2014 .chars_at(selection.start)
2015 .next()
2016 .map_or(true, |c| language.should_autoclose_before(c))
2017 } else {
2018 false
2019 }
2020 });
2021
2022 if should_autoclose {
2023 Some(pair.clone())
2024 } else {
2025 None
2026 }
2027 })
2028 });
2029
2030 if let Some(pair) = autoclose_pair {
2031 let selection_ranges = selections
2032 .iter()
2033 .map(|selection| {
2034 let start = selection.start.to_offset(&snapshot);
2035 start..start
2036 })
2037 .collect::<SmallVec<[_; 32]>>();
2038
2039 buffer.edit(selection_ranges, &pair.end, cx);
2040 snapshot = buffer.snapshot(cx);
2041
2042 new_selections = Some(
2043 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2044 .collect::<Vec<_>>(),
2045 );
2046
2047 if pair.end.len() == 1 {
2048 let mut delta = 0;
2049 bracket_pair_state = Some(BracketPairState {
2050 ranges: selections
2051 .iter()
2052 .map(move |selection| {
2053 let offset = selection.start + delta;
2054 delta += 1;
2055 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2056 })
2057 .collect(),
2058 pair,
2059 });
2060 }
2061 }
2062 });
2063
2064 if let Some(new_selections) = new_selections {
2065 self.update_selections(new_selections, None, cx);
2066 }
2067 if let Some(bracket_pair_state) = bracket_pair_state {
2068 self.autoclose_stack.push(bracket_pair_state);
2069 }
2070 }
2071
2072 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2073 let old_selections = self.local_selections::<usize>(cx);
2074 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2075 autoclose_pair
2076 } else {
2077 return false;
2078 };
2079 if text != autoclose_pair.pair.end {
2080 return false;
2081 }
2082
2083 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2084
2085 let buffer = self.buffer.read(cx).snapshot(cx);
2086 if old_selections
2087 .iter()
2088 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2089 .all(|(selection, autoclose_range)| {
2090 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2091 selection.is_empty() && selection.start == autoclose_range_end
2092 })
2093 {
2094 let new_selections = old_selections
2095 .into_iter()
2096 .map(|selection| {
2097 let cursor = selection.start + 1;
2098 Selection {
2099 id: selection.id,
2100 start: cursor,
2101 end: cursor,
2102 reversed: false,
2103 goal: SelectionGoal::None,
2104 }
2105 })
2106 .collect();
2107 self.autoclose_stack.pop();
2108 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2109 true
2110 } else {
2111 false
2112 }
2113 }
2114
2115 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2116 let offset = position.to_offset(buffer);
2117 let (word_range, kind) = buffer.surrounding_word(offset);
2118 if offset > word_range.start && kind == Some(CharKind::Word) {
2119 Some(
2120 buffer
2121 .text_for_range(word_range.start..offset)
2122 .collect::<String>(),
2123 )
2124 } else {
2125 None
2126 }
2127 }
2128
2129 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2130 if self.pending_rename.is_some() {
2131 return;
2132 }
2133
2134 let project = if let Some(project) = self.project.clone() {
2135 project
2136 } else {
2137 return;
2138 };
2139
2140 let position = self.newest_anchor_selection().head();
2141 let (buffer, buffer_position) = if let Some(output) = self
2142 .buffer
2143 .read(cx)
2144 .text_anchor_for_position(position.clone(), cx)
2145 {
2146 output
2147 } else {
2148 return;
2149 };
2150
2151 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2152 let completions = project.update(cx, |project, cx| {
2153 project.completions(&buffer, buffer_position.clone(), cx)
2154 });
2155
2156 let id = post_inc(&mut self.next_completion_id);
2157 let task = cx.spawn_weak(|this, mut cx| {
2158 async move {
2159 let completions = completions.await?;
2160 if completions.is_empty() {
2161 return Ok(());
2162 }
2163
2164 let mut menu = CompletionsMenu {
2165 id,
2166 initial_position: position,
2167 match_candidates: completions
2168 .iter()
2169 .enumerate()
2170 .map(|(id, completion)| {
2171 StringMatchCandidate::new(
2172 id,
2173 completion.label.text[completion.label.filter_range.clone()].into(),
2174 )
2175 })
2176 .collect(),
2177 buffer,
2178 completions: completions.into(),
2179 matches: Vec::new().into(),
2180 selected_item: 0,
2181 list: Default::default(),
2182 };
2183
2184 menu.filter(query.as_deref(), cx.background()).await;
2185
2186 if let Some(this) = this.upgrade(&cx) {
2187 this.update(&mut cx, |this, cx| {
2188 match this.context_menu.as_ref() {
2189 None => {}
2190 Some(ContextMenu::Completions(prev_menu)) => {
2191 if prev_menu.id > menu.id {
2192 return;
2193 }
2194 }
2195 _ => return,
2196 }
2197
2198 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2199 if this.focused {
2200 this.show_context_menu(ContextMenu::Completions(menu), cx);
2201 }
2202
2203 cx.notify();
2204 });
2205 }
2206 Ok::<_, anyhow::Error>(())
2207 }
2208 .log_err()
2209 });
2210 self.completion_tasks.push((id, task));
2211 }
2212
2213 pub fn confirm_completion(
2214 &mut self,
2215 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2216 cx: &mut ViewContext<Self>,
2217 ) -> Option<Task<Result<()>>> {
2218 use language::ToOffset as _;
2219
2220 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2221 menu
2222 } else {
2223 return None;
2224 };
2225
2226 let mat = completions_menu
2227 .matches
2228 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2229 let buffer_handle = completions_menu.buffer;
2230 let completion = completions_menu.completions.get(mat.candidate_id)?;
2231
2232 let snippet;
2233 let text;
2234 if completion.is_snippet() {
2235 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2236 text = snippet.as_ref().unwrap().text.clone();
2237 } else {
2238 snippet = None;
2239 text = completion.new_text.clone();
2240 };
2241 let buffer = buffer_handle.read(cx);
2242 let old_range = completion.old_range.to_offset(&buffer);
2243 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2244
2245 let selections = self.local_selections::<usize>(cx);
2246 let newest_selection = self.newest_anchor_selection();
2247 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2248 return None;
2249 }
2250
2251 let lookbehind = newest_selection
2252 .start
2253 .text_anchor
2254 .to_offset(buffer)
2255 .saturating_sub(old_range.start);
2256 let lookahead = old_range
2257 .end
2258 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2259 let mut common_prefix_len = old_text
2260 .bytes()
2261 .zip(text.bytes())
2262 .take_while(|(a, b)| a == b)
2263 .count();
2264
2265 let snapshot = self.buffer.read(cx).snapshot(cx);
2266 let mut ranges = Vec::new();
2267 for selection in &selections {
2268 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2269 let start = selection.start.saturating_sub(lookbehind);
2270 let end = selection.end + lookahead;
2271 ranges.push(start + common_prefix_len..end);
2272 } else {
2273 common_prefix_len = 0;
2274 ranges.clear();
2275 ranges.extend(selections.iter().map(|s| {
2276 if s.id == newest_selection.id {
2277 old_range.clone()
2278 } else {
2279 s.start..s.end
2280 }
2281 }));
2282 break;
2283 }
2284 }
2285 let text = &text[common_prefix_len..];
2286
2287 self.start_transaction(cx);
2288 if let Some(mut snippet) = snippet {
2289 snippet.text = text.to_string();
2290 for tabstop in snippet.tabstops.iter_mut().flatten() {
2291 tabstop.start -= common_prefix_len as isize;
2292 tabstop.end -= common_prefix_len as isize;
2293 }
2294
2295 self.insert_snippet(&ranges, snippet, cx).log_err();
2296 } else {
2297 self.buffer.update(cx, |buffer, cx| {
2298 buffer.edit_with_autoindent(ranges, text, cx);
2299 });
2300 }
2301 self.end_transaction(cx);
2302
2303 let project = self.project.clone()?;
2304 let apply_edits = project.update(cx, |project, cx| {
2305 project.apply_additional_edits_for_completion(
2306 buffer_handle,
2307 completion.clone(),
2308 true,
2309 cx,
2310 )
2311 });
2312 Some(cx.foreground().spawn(async move {
2313 apply_edits.await?;
2314 Ok(())
2315 }))
2316 }
2317
2318 pub fn toggle_code_actions(
2319 &mut self,
2320 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2321 cx: &mut ViewContext<Self>,
2322 ) {
2323 if matches!(
2324 self.context_menu.as_ref(),
2325 Some(ContextMenu::CodeActions(_))
2326 ) {
2327 self.context_menu.take();
2328 cx.notify();
2329 return;
2330 }
2331
2332 let mut task = self.code_actions_task.take();
2333 cx.spawn_weak(|this, mut cx| async move {
2334 while let Some(prev_task) = task {
2335 prev_task.await;
2336 task = this
2337 .upgrade(&cx)
2338 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2339 }
2340
2341 if let Some(this) = this.upgrade(&cx) {
2342 this.update(&mut cx, |this, cx| {
2343 if this.focused {
2344 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2345 this.show_context_menu(
2346 ContextMenu::CodeActions(CodeActionsMenu {
2347 buffer,
2348 actions,
2349 selected_item: Default::default(),
2350 list: Default::default(),
2351 deployed_from_indicator,
2352 }),
2353 cx,
2354 );
2355 }
2356 }
2357 })
2358 }
2359 Ok::<_, anyhow::Error>(())
2360 })
2361 .detach_and_log_err(cx);
2362 }
2363
2364 pub fn confirm_code_action(
2365 workspace: &mut Workspace,
2366 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2367 cx: &mut ViewContext<Workspace>,
2368 ) -> Option<Task<Result<()>>> {
2369 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2370 let actions_menu = if let ContextMenu::CodeActions(menu) =
2371 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2372 {
2373 menu
2374 } else {
2375 return None;
2376 };
2377 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2378 let action = actions_menu.actions.get(action_ix)?.clone();
2379 let title = action.lsp_action.title.clone();
2380 let buffer = actions_menu.buffer;
2381
2382 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2383 project.apply_code_action(buffer, action, true, cx)
2384 });
2385 Some(cx.spawn(|workspace, cx| async move {
2386 let project_transaction = apply_code_actions.await?;
2387 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2388 }))
2389 }
2390
2391 async fn open_project_transaction(
2392 this: ViewHandle<Editor>,
2393 workspace: ViewHandle<Workspace>,
2394 transaction: ProjectTransaction,
2395 title: String,
2396 mut cx: AsyncAppContext,
2397 ) -> Result<()> {
2398 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2399
2400 // If the project transaction's edits are all contained within this editor, then
2401 // avoid opening a new editor to display them.
2402 let mut entries = transaction.0.iter();
2403 if let Some((buffer, transaction)) = entries.next() {
2404 if entries.next().is_none() {
2405 let excerpt = this.read_with(&cx, |editor, cx| {
2406 editor
2407 .buffer()
2408 .read(cx)
2409 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2410 });
2411 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2412 if excerpted_buffer == *buffer {
2413 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2414 let excerpt_range = excerpt_range.to_offset(&snapshot);
2415 if snapshot
2416 .edited_ranges_for_transaction(transaction)
2417 .all(|range| {
2418 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2419 })
2420 {
2421 return Ok(());
2422 }
2423 }
2424 }
2425 }
2426 }
2427
2428 let mut ranges_to_highlight = Vec::new();
2429 let excerpt_buffer = cx.add_model(|cx| {
2430 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2431 for (buffer, transaction) in &transaction.0 {
2432 let snapshot = buffer.read(cx).snapshot();
2433 ranges_to_highlight.extend(
2434 multibuffer.push_excerpts_with_context_lines(
2435 buffer.clone(),
2436 snapshot
2437 .edited_ranges_for_transaction::<usize>(transaction)
2438 .collect(),
2439 1,
2440 cx,
2441 ),
2442 );
2443 }
2444 multibuffer.push_transaction(&transaction.0);
2445 multibuffer
2446 });
2447
2448 workspace.update(&mut cx, |workspace, cx| {
2449 let project = workspace.project().clone();
2450 let editor =
2451 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2452 workspace.add_item(Box::new(editor.clone()), cx);
2453 editor.update(cx, |editor, cx| {
2454 let color = editor.style(cx).highlighted_line_background;
2455 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2456 });
2457 });
2458
2459 Ok(())
2460 }
2461
2462 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2463 let project = self.project.as_ref()?;
2464 let buffer = self.buffer.read(cx);
2465 let newest_selection = self.newest_anchor_selection().clone();
2466 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2467 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2468 if start_buffer != end_buffer {
2469 return None;
2470 }
2471
2472 let actions = project.update(cx, |project, cx| {
2473 project.code_actions(&start_buffer, start..end, cx)
2474 });
2475 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2476 let actions = actions.await;
2477 if let Some(this) = this.upgrade(&cx) {
2478 this.update(&mut cx, |this, cx| {
2479 this.available_code_actions = actions.log_err().and_then(|actions| {
2480 if actions.is_empty() {
2481 None
2482 } else {
2483 Some((start_buffer, actions.into()))
2484 }
2485 });
2486 cx.notify();
2487 })
2488 }
2489 }));
2490 None
2491 }
2492
2493 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2494 if self.pending_rename.is_some() {
2495 return None;
2496 }
2497
2498 let project = self.project.as_ref()?;
2499 let buffer = self.buffer.read(cx);
2500 let newest_selection = self.newest_anchor_selection().clone();
2501 let cursor_position = newest_selection.head();
2502 let (cursor_buffer, cursor_buffer_position) =
2503 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2504 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2505 if cursor_buffer != tail_buffer {
2506 return None;
2507 }
2508
2509 let highlights = project.update(cx, |project, cx| {
2510 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2511 });
2512
2513 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2514 let highlights = highlights.log_err().await;
2515 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2516 this.update(&mut cx, |this, cx| {
2517 if this.pending_rename.is_some() {
2518 return;
2519 }
2520
2521 let buffer_id = cursor_position.buffer_id;
2522 let style = this.style(cx);
2523 let read_background = style.document_highlight_read_background;
2524 let write_background = style.document_highlight_write_background;
2525 let buffer = this.buffer.read(cx);
2526 if !buffer
2527 .text_anchor_for_position(cursor_position, cx)
2528 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2529 {
2530 return;
2531 }
2532
2533 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2534 let mut write_ranges = Vec::new();
2535 let mut read_ranges = Vec::new();
2536 for highlight in highlights {
2537 for (excerpt_id, excerpt_range) in
2538 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2539 {
2540 let start = highlight
2541 .range
2542 .start
2543 .max(&excerpt_range.start, cursor_buffer_snapshot);
2544 let end = highlight
2545 .range
2546 .end
2547 .min(&excerpt_range.end, cursor_buffer_snapshot);
2548 if start.cmp(&end, cursor_buffer_snapshot).unwrap().is_ge() {
2549 continue;
2550 }
2551
2552 let range = Anchor {
2553 buffer_id,
2554 excerpt_id: excerpt_id.clone(),
2555 text_anchor: start,
2556 }..Anchor {
2557 buffer_id,
2558 excerpt_id,
2559 text_anchor: end,
2560 };
2561 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2562 write_ranges.push(range);
2563 } else {
2564 read_ranges.push(range);
2565 }
2566 }
2567 }
2568
2569 this.highlight_background::<DocumentHighlightRead>(
2570 read_ranges,
2571 read_background,
2572 cx,
2573 );
2574 this.highlight_background::<DocumentHighlightWrite>(
2575 write_ranges,
2576 write_background,
2577 cx,
2578 );
2579 cx.notify();
2580 });
2581 }
2582 }));
2583 None
2584 }
2585
2586 pub fn render_code_actions_indicator(
2587 &self,
2588 style: &EditorStyle,
2589 cx: &mut ViewContext<Self>,
2590 ) -> Option<ElementBox> {
2591 if self.available_code_actions.is_some() {
2592 enum Tag {}
2593 Some(
2594 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2595 Svg::new("icons/zap.svg")
2596 .with_color(style.code_actions_indicator)
2597 .boxed()
2598 })
2599 .with_cursor_style(CursorStyle::PointingHand)
2600 .with_padding(Padding::uniform(3.))
2601 .on_mouse_down(|cx| {
2602 cx.dispatch_action(ToggleCodeActions(true));
2603 })
2604 .boxed(),
2605 )
2606 } else {
2607 None
2608 }
2609 }
2610
2611 pub fn context_menu_visible(&self) -> bool {
2612 self.context_menu
2613 .as_ref()
2614 .map_or(false, |menu| menu.visible())
2615 }
2616
2617 pub fn render_context_menu(
2618 &self,
2619 cursor_position: DisplayPoint,
2620 style: EditorStyle,
2621 cx: &AppContext,
2622 ) -> Option<(DisplayPoint, ElementBox)> {
2623 self.context_menu
2624 .as_ref()
2625 .map(|menu| menu.render(cursor_position, style, cx))
2626 }
2627
2628 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2629 if !matches!(menu, ContextMenu::Completions(_)) {
2630 self.completion_tasks.clear();
2631 }
2632 self.context_menu = Some(menu);
2633 cx.notify();
2634 }
2635
2636 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2637 cx.notify();
2638 self.completion_tasks.clear();
2639 self.context_menu.take()
2640 }
2641
2642 pub fn insert_snippet(
2643 &mut self,
2644 insertion_ranges: &[Range<usize>],
2645 snippet: Snippet,
2646 cx: &mut ViewContext<Self>,
2647 ) -> Result<()> {
2648 let tabstops = self.buffer.update(cx, |buffer, cx| {
2649 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2650
2651 let snapshot = &*buffer.read(cx);
2652 let snippet = &snippet;
2653 snippet
2654 .tabstops
2655 .iter()
2656 .map(|tabstop| {
2657 let mut tabstop_ranges = tabstop
2658 .iter()
2659 .flat_map(|tabstop_range| {
2660 let mut delta = 0 as isize;
2661 insertion_ranges.iter().map(move |insertion_range| {
2662 let insertion_start = insertion_range.start as isize + delta;
2663 delta +=
2664 snippet.text.len() as isize - insertion_range.len() as isize;
2665
2666 let start = snapshot.anchor_before(
2667 (insertion_start + tabstop_range.start) as usize,
2668 );
2669 let end = snapshot
2670 .anchor_after((insertion_start + tabstop_range.end) as usize);
2671 start..end
2672 })
2673 })
2674 .collect::<Vec<_>>();
2675 tabstop_ranges
2676 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2677 tabstop_ranges
2678 })
2679 .collect::<Vec<_>>()
2680 });
2681
2682 if let Some(tabstop) = tabstops.first() {
2683 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2684 self.snippet_stack.push(SnippetState {
2685 active_index: 0,
2686 ranges: tabstops,
2687 });
2688 }
2689
2690 Ok(())
2691 }
2692
2693 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2694 self.move_to_snippet_tabstop(Bias::Right, cx)
2695 }
2696
2697 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2698 self.move_to_snippet_tabstop(Bias::Left, cx);
2699 }
2700
2701 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2702 let buffer = self.buffer.read(cx).snapshot(cx);
2703
2704 if let Some(snippet) = self.snippet_stack.last_mut() {
2705 match bias {
2706 Bias::Left => {
2707 if snippet.active_index > 0 {
2708 snippet.active_index -= 1;
2709 } else {
2710 return false;
2711 }
2712 }
2713 Bias::Right => {
2714 if snippet.active_index + 1 < snippet.ranges.len() {
2715 snippet.active_index += 1;
2716 } else {
2717 return false;
2718 }
2719 }
2720 }
2721 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2722 let new_selections = current_ranges
2723 .iter()
2724 .map(|new_range| {
2725 let new_range = new_range.to_offset(&buffer);
2726 Selection {
2727 id: post_inc(&mut self.next_selection_id),
2728 start: new_range.start,
2729 end: new_range.end,
2730 reversed: false,
2731 goal: SelectionGoal::None,
2732 }
2733 })
2734 .collect();
2735
2736 // Remove the snippet state when moving to the last tabstop.
2737 if snippet.active_index + 1 == snippet.ranges.len() {
2738 self.snippet_stack.pop();
2739 }
2740
2741 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2742 return true;
2743 }
2744 self.snippet_stack.pop();
2745 }
2746
2747 false
2748 }
2749
2750 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2751 self.start_transaction(cx);
2752 self.select_all(&SelectAll, cx);
2753 self.insert("", cx);
2754 self.end_transaction(cx);
2755 }
2756
2757 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2758 self.start_transaction(cx);
2759 let mut selections = self.local_selections::<Point>(cx);
2760 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2761 for selection in &mut selections {
2762 if selection.is_empty() {
2763 let old_head = selection.head();
2764 let mut new_head =
2765 movement::left(&display_map, old_head.to_display_point(&display_map))
2766 .to_point(&display_map);
2767 if let Some((buffer, line_buffer_range)) = display_map
2768 .buffer_snapshot
2769 .buffer_line_for_row(old_head.row)
2770 {
2771 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2772 if old_head.column <= indent_column && old_head.column > 0 {
2773 let indent = buffer.indent_size();
2774 new_head = cmp::min(
2775 new_head,
2776 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2777 );
2778 }
2779 }
2780
2781 selection.set_head(new_head, SelectionGoal::None);
2782 }
2783 }
2784 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2785 self.insert("", cx);
2786 self.end_transaction(cx);
2787 }
2788
2789 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2790 self.transact(cx, |this, cx| {
2791 this.move_selections(cx, |map, selection| {
2792 if selection.is_empty() {
2793 let cursor = movement::right(map, selection.head());
2794 selection.set_head(cursor, SelectionGoal::None);
2795 }
2796 });
2797 this.insert(&"", cx);
2798 });
2799 }
2800
2801 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2802 if self.move_to_next_snippet_tabstop(cx) {
2803 return;
2804 }
2805
2806 self.start_transaction(cx);
2807 let tab_size = cx.global::<Settings>().tab_size;
2808 let mut selections = self.local_selections::<Point>(cx);
2809 let mut last_indent = None;
2810 self.buffer.update(cx, |buffer, cx| {
2811 for selection in &mut selections {
2812 if selection.is_empty() {
2813 let char_column = buffer
2814 .read(cx)
2815 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2816 .flat_map(str::chars)
2817 .count();
2818 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2819 buffer.edit(
2820 [selection.start..selection.start],
2821 " ".repeat(chars_to_next_tab_stop),
2822 cx,
2823 );
2824 selection.start.column += chars_to_next_tab_stop as u32;
2825 selection.end = selection.start;
2826 } else {
2827 let mut start_row = selection.start.row;
2828 let mut end_row = selection.end.row + 1;
2829
2830 // If a selection ends at the beginning of a line, don't indent
2831 // that last line.
2832 if selection.end.column == 0 {
2833 end_row -= 1;
2834 }
2835
2836 // Avoid re-indenting a row that has already been indented by a
2837 // previous selection, but still update this selection's column
2838 // to reflect that indentation.
2839 if let Some((last_indent_row, last_indent_len)) = last_indent {
2840 if last_indent_row == selection.start.row {
2841 selection.start.column += last_indent_len;
2842 start_row += 1;
2843 }
2844 if last_indent_row == selection.end.row {
2845 selection.end.column += last_indent_len;
2846 }
2847 }
2848
2849 for row in start_row..end_row {
2850 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2851 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2852 let row_start = Point::new(row, 0);
2853 buffer.edit(
2854 [row_start..row_start],
2855 " ".repeat(columns_to_next_tab_stop),
2856 cx,
2857 );
2858
2859 // Update this selection's endpoints to reflect the indentation.
2860 if row == selection.start.row {
2861 selection.start.column += columns_to_next_tab_stop as u32;
2862 }
2863 if row == selection.end.row {
2864 selection.end.column += columns_to_next_tab_stop as u32;
2865 }
2866
2867 last_indent = Some((row, columns_to_next_tab_stop as u32));
2868 }
2869 }
2870 }
2871 });
2872
2873 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2874 self.end_transaction(cx);
2875 }
2876
2877 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2878 if !self.snippet_stack.is_empty() {
2879 self.move_to_prev_snippet_tabstop(cx);
2880 return;
2881 }
2882
2883 self.start_transaction(cx);
2884 let tab_size = cx.global::<Settings>().tab_size;
2885 let selections = self.local_selections::<Point>(cx);
2886 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2887 let mut deletion_ranges = Vec::new();
2888 let mut last_outdent = None;
2889 {
2890 let buffer = self.buffer.read(cx).read(cx);
2891 for selection in &selections {
2892 let mut rows = selection.spanned_rows(false, &display_map);
2893
2894 // Avoid re-outdenting a row that has already been outdented by a
2895 // previous selection.
2896 if let Some(last_row) = last_outdent {
2897 if last_row == rows.start {
2898 rows.start += 1;
2899 }
2900 }
2901
2902 for row in rows {
2903 let column = buffer.indent_column_for_line(row) as usize;
2904 if column > 0 {
2905 let mut deletion_len = (column % tab_size) as u32;
2906 if deletion_len == 0 {
2907 deletion_len = tab_size as u32;
2908 }
2909 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2910 last_outdent = Some(row);
2911 }
2912 }
2913 }
2914 }
2915 self.buffer.update(cx, |buffer, cx| {
2916 buffer.edit(deletion_ranges, "", cx);
2917 });
2918
2919 self.update_selections(
2920 self.local_selections::<usize>(cx),
2921 Some(Autoscroll::Fit),
2922 cx,
2923 );
2924 self.end_transaction(cx);
2925 }
2926
2927 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2928 self.start_transaction(cx);
2929
2930 let selections = self.local_selections::<Point>(cx);
2931 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2932 let buffer = self.buffer.read(cx).snapshot(cx);
2933
2934 let mut new_cursors = Vec::new();
2935 let mut edit_ranges = Vec::new();
2936 let mut selections = selections.iter().peekable();
2937 while let Some(selection) = selections.next() {
2938 let mut rows = selection.spanned_rows(false, &display_map);
2939 let goal_display_column = selection.head().to_display_point(&display_map).column();
2940
2941 // Accumulate contiguous regions of rows that we want to delete.
2942 while let Some(next_selection) = selections.peek() {
2943 let next_rows = next_selection.spanned_rows(false, &display_map);
2944 if next_rows.start <= rows.end {
2945 rows.end = next_rows.end;
2946 selections.next().unwrap();
2947 } else {
2948 break;
2949 }
2950 }
2951
2952 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2953 let edit_end;
2954 let cursor_buffer_row;
2955 if buffer.max_point().row >= rows.end {
2956 // If there's a line after the range, delete the \n from the end of the row range
2957 // and position the cursor on the next line.
2958 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2959 cursor_buffer_row = rows.end;
2960 } else {
2961 // If there isn't a line after the range, delete the \n from the line before the
2962 // start of the row range and position the cursor there.
2963 edit_start = edit_start.saturating_sub(1);
2964 edit_end = buffer.len();
2965 cursor_buffer_row = rows.start.saturating_sub(1);
2966 }
2967
2968 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2969 *cursor.column_mut() =
2970 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2971
2972 new_cursors.push((
2973 selection.id,
2974 buffer.anchor_after(cursor.to_point(&display_map)),
2975 ));
2976 edit_ranges.push(edit_start..edit_end);
2977 }
2978
2979 let buffer = self.buffer.update(cx, |buffer, cx| {
2980 buffer.edit(edit_ranges, "", cx);
2981 buffer.snapshot(cx)
2982 });
2983 let new_selections = new_cursors
2984 .into_iter()
2985 .map(|(id, cursor)| {
2986 let cursor = cursor.to_point(&buffer);
2987 Selection {
2988 id,
2989 start: cursor,
2990 end: cursor,
2991 reversed: false,
2992 goal: SelectionGoal::None,
2993 }
2994 })
2995 .collect();
2996 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2997 self.end_transaction(cx);
2998 }
2999
3000 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3001 self.start_transaction(cx);
3002
3003 let selections = self.local_selections::<Point>(cx);
3004 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3005 let buffer = &display_map.buffer_snapshot;
3006
3007 let mut edits = Vec::new();
3008 let mut selections_iter = selections.iter().peekable();
3009 while let Some(selection) = selections_iter.next() {
3010 // Avoid duplicating the same lines twice.
3011 let mut rows = selection.spanned_rows(false, &display_map);
3012
3013 while let Some(next_selection) = selections_iter.peek() {
3014 let next_rows = next_selection.spanned_rows(false, &display_map);
3015 if next_rows.start <= rows.end - 1 {
3016 rows.end = next_rows.end;
3017 selections_iter.next().unwrap();
3018 } else {
3019 break;
3020 }
3021 }
3022
3023 // Copy the text from the selected row region and splice it at the start of the region.
3024 let start = Point::new(rows.start, 0);
3025 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3026 let text = buffer
3027 .text_for_range(start..end)
3028 .chain(Some("\n"))
3029 .collect::<String>();
3030 edits.push((start, text, rows.len() as u32));
3031 }
3032
3033 self.buffer.update(cx, |buffer, cx| {
3034 for (point, text, _) in edits.into_iter().rev() {
3035 buffer.edit(Some(point..point), text, cx);
3036 }
3037 });
3038
3039 self.request_autoscroll(Autoscroll::Fit, cx);
3040 self.end_transaction(cx);
3041 }
3042
3043 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3044 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3045 let buffer = self.buffer.read(cx).snapshot(cx);
3046
3047 let mut edits = Vec::new();
3048 let mut unfold_ranges = Vec::new();
3049 let mut refold_ranges = Vec::new();
3050
3051 let selections = self.local_selections::<Point>(cx);
3052 let mut selections = selections.iter().peekable();
3053 let mut contiguous_row_selections = Vec::new();
3054 let mut new_selections = Vec::new();
3055
3056 while let Some(selection) = selections.next() {
3057 // Find all the selections that span a contiguous row range
3058 contiguous_row_selections.push(selection.clone());
3059 let start_row = selection.start.row;
3060 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3061 display_map.next_line_boundary(selection.end).0.row + 1
3062 } else {
3063 selection.end.row
3064 };
3065
3066 while let Some(next_selection) = selections.peek() {
3067 if next_selection.start.row <= end_row {
3068 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3069 display_map.next_line_boundary(next_selection.end).0.row + 1
3070 } else {
3071 next_selection.end.row
3072 };
3073 contiguous_row_selections.push(selections.next().unwrap().clone());
3074 } else {
3075 break;
3076 }
3077 }
3078
3079 // Move the text spanned by the row range to be before the line preceding the row range
3080 if start_row > 0 {
3081 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3082 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3083 let insertion_point = display_map
3084 .prev_line_boundary(Point::new(start_row - 1, 0))
3085 .0;
3086
3087 // Don't move lines across excerpts
3088 if buffer
3089 .excerpt_boundaries_in_range((
3090 Bound::Excluded(insertion_point),
3091 Bound::Included(range_to_move.end),
3092 ))
3093 .next()
3094 .is_none()
3095 {
3096 let text = buffer
3097 .text_for_range(range_to_move.clone())
3098 .flat_map(|s| s.chars())
3099 .skip(1)
3100 .chain(['\n'])
3101 .collect::<String>();
3102
3103 edits.push((
3104 buffer.anchor_after(range_to_move.start)
3105 ..buffer.anchor_before(range_to_move.end),
3106 String::new(),
3107 ));
3108 let insertion_anchor = buffer.anchor_after(insertion_point);
3109 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3110
3111 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3112
3113 // Move selections up
3114 new_selections.extend(contiguous_row_selections.drain(..).map(
3115 |mut selection| {
3116 selection.start.row -= row_delta;
3117 selection.end.row -= row_delta;
3118 selection
3119 },
3120 ));
3121
3122 // Move folds up
3123 unfold_ranges.push(range_to_move.clone());
3124 for fold in display_map.folds_in_range(
3125 buffer.anchor_before(range_to_move.start)
3126 ..buffer.anchor_after(range_to_move.end),
3127 ) {
3128 let mut start = fold.start.to_point(&buffer);
3129 let mut end = fold.end.to_point(&buffer);
3130 start.row -= row_delta;
3131 end.row -= row_delta;
3132 refold_ranges.push(start..end);
3133 }
3134 }
3135 }
3136
3137 // If we didn't move line(s), preserve the existing selections
3138 new_selections.extend(contiguous_row_selections.drain(..));
3139 }
3140
3141 self.start_transaction(cx);
3142 self.unfold_ranges(unfold_ranges, cx);
3143 self.buffer.update(cx, |buffer, cx| {
3144 for (range, text) in edits {
3145 buffer.edit([range], text, cx);
3146 }
3147 });
3148 self.fold_ranges(refold_ranges, cx);
3149 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3150 self.end_transaction(cx);
3151 }
3152
3153 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3154 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3155 let buffer = self.buffer.read(cx).snapshot(cx);
3156
3157 let mut edits = Vec::new();
3158 let mut unfold_ranges = Vec::new();
3159 let mut refold_ranges = Vec::new();
3160
3161 let selections = self.local_selections::<Point>(cx);
3162 let mut selections = selections.iter().peekable();
3163 let mut contiguous_row_selections = Vec::new();
3164 let mut new_selections = Vec::new();
3165
3166 while let Some(selection) = selections.next() {
3167 // Find all the selections that span a contiguous row range
3168 contiguous_row_selections.push(selection.clone());
3169 let start_row = selection.start.row;
3170 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3171 display_map.next_line_boundary(selection.end).0.row + 1
3172 } else {
3173 selection.end.row
3174 };
3175
3176 while let Some(next_selection) = selections.peek() {
3177 if next_selection.start.row <= end_row {
3178 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3179 display_map.next_line_boundary(next_selection.end).0.row + 1
3180 } else {
3181 next_selection.end.row
3182 };
3183 contiguous_row_selections.push(selections.next().unwrap().clone());
3184 } else {
3185 break;
3186 }
3187 }
3188
3189 // Move the text spanned by the row range to be after the last line of the row range
3190 if end_row <= buffer.max_point().row {
3191 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3192 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3193
3194 // Don't move lines across excerpt boundaries
3195 if buffer
3196 .excerpt_boundaries_in_range((
3197 Bound::Excluded(range_to_move.start),
3198 Bound::Included(insertion_point),
3199 ))
3200 .next()
3201 .is_none()
3202 {
3203 let mut text = String::from("\n");
3204 text.extend(buffer.text_for_range(range_to_move.clone()));
3205 text.pop(); // Drop trailing newline
3206 edits.push((
3207 buffer.anchor_after(range_to_move.start)
3208 ..buffer.anchor_before(range_to_move.end),
3209 String::new(),
3210 ));
3211 let insertion_anchor = buffer.anchor_after(insertion_point);
3212 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3213
3214 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3215
3216 // Move selections down
3217 new_selections.extend(contiguous_row_selections.drain(..).map(
3218 |mut selection| {
3219 selection.start.row += row_delta;
3220 selection.end.row += row_delta;
3221 selection
3222 },
3223 ));
3224
3225 // Move folds down
3226 unfold_ranges.push(range_to_move.clone());
3227 for fold in display_map.folds_in_range(
3228 buffer.anchor_before(range_to_move.start)
3229 ..buffer.anchor_after(range_to_move.end),
3230 ) {
3231 let mut start = fold.start.to_point(&buffer);
3232 let mut end = fold.end.to_point(&buffer);
3233 start.row += row_delta;
3234 end.row += row_delta;
3235 refold_ranges.push(start..end);
3236 }
3237 }
3238 }
3239
3240 // If we didn't move line(s), preserve the existing selections
3241 new_selections.extend(contiguous_row_selections.drain(..));
3242 }
3243
3244 self.start_transaction(cx);
3245 self.unfold_ranges(unfold_ranges, cx);
3246 self.buffer.update(cx, |buffer, cx| {
3247 for (range, text) in edits {
3248 buffer.edit([range], text, cx);
3249 }
3250 });
3251 self.fold_ranges(refold_ranges, cx);
3252 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3253 self.end_transaction(cx);
3254 }
3255
3256 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3257 self.start_transaction(cx);
3258 let mut text = String::new();
3259 let mut selections = self.local_selections::<Point>(cx);
3260 let mut clipboard_selections = Vec::with_capacity(selections.len());
3261 {
3262 let buffer = self.buffer.read(cx).read(cx);
3263 let max_point = buffer.max_point();
3264 for selection in &mut selections {
3265 let is_entire_line = selection.is_empty();
3266 if is_entire_line {
3267 selection.start = Point::new(selection.start.row, 0);
3268 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3269 selection.goal = SelectionGoal::None;
3270 }
3271 let mut len = 0;
3272 for chunk in buffer.text_for_range(selection.start..selection.end) {
3273 text.push_str(chunk);
3274 len += chunk.len();
3275 }
3276 clipboard_selections.push(ClipboardSelection {
3277 len,
3278 is_entire_line,
3279 });
3280 }
3281 }
3282 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3283 self.insert("", cx);
3284 self.end_transaction(cx);
3285
3286 cx.as_mut()
3287 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3288 }
3289
3290 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3291 let selections = self.local_selections::<Point>(cx);
3292 let mut text = String::new();
3293 let mut clipboard_selections = Vec::with_capacity(selections.len());
3294 {
3295 let buffer = self.buffer.read(cx).read(cx);
3296 let max_point = buffer.max_point();
3297 for selection in selections.iter() {
3298 let mut start = selection.start;
3299 let mut end = selection.end;
3300 let is_entire_line = selection.is_empty();
3301 if is_entire_line {
3302 start = Point::new(start.row, 0);
3303 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3304 }
3305 let mut len = 0;
3306 for chunk in buffer.text_for_range(start..end) {
3307 text.push_str(chunk);
3308 len += chunk.len();
3309 }
3310 clipboard_selections.push(ClipboardSelection {
3311 len,
3312 is_entire_line,
3313 });
3314 }
3315 }
3316
3317 cx.as_mut()
3318 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3319 }
3320
3321 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3322 if let Some(item) = cx.as_mut().read_from_clipboard() {
3323 let clipboard_text = item.text();
3324 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3325 let mut selections = self.local_selections::<usize>(cx);
3326 let all_selections_were_entire_line =
3327 clipboard_selections.iter().all(|s| s.is_entire_line);
3328 if clipboard_selections.len() != selections.len() {
3329 clipboard_selections.clear();
3330 }
3331
3332 let mut delta = 0_isize;
3333 let mut start_offset = 0;
3334 for (i, selection) in selections.iter_mut().enumerate() {
3335 let to_insert;
3336 let entire_line;
3337 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3338 let end_offset = start_offset + clipboard_selection.len;
3339 to_insert = &clipboard_text[start_offset..end_offset];
3340 entire_line = clipboard_selection.is_entire_line;
3341 start_offset = end_offset
3342 } else {
3343 to_insert = clipboard_text.as_str();
3344 entire_line = all_selections_were_entire_line;
3345 }
3346
3347 selection.start = (selection.start as isize + delta) as usize;
3348 selection.end = (selection.end as isize + delta) as usize;
3349
3350 self.buffer.update(cx, |buffer, cx| {
3351 // If the corresponding selection was empty when this slice of the
3352 // clipboard text was written, then the entire line containing the
3353 // selection was copied. If this selection is also currently empty,
3354 // then paste the line before the current line of the buffer.
3355 let range = if selection.is_empty() && entire_line {
3356 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3357 let line_start = selection.start - column;
3358 line_start..line_start
3359 } else {
3360 selection.start..selection.end
3361 };
3362
3363 delta += to_insert.len() as isize - range.len() as isize;
3364 buffer.edit([range], to_insert, cx);
3365 selection.start += to_insert.len();
3366 selection.end = selection.start;
3367 });
3368 }
3369 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3370 } else {
3371 self.insert(clipboard_text, cx);
3372 }
3373 }
3374 }
3375
3376 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3377 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3378 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3379 self.set_selections(selections, None, true, cx);
3380 }
3381 self.request_autoscroll(Autoscroll::Fit, cx);
3382 }
3383 }
3384
3385 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3386 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3387 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3388 self.set_selections(selections, None, true, cx);
3389 }
3390 self.request_autoscroll(Autoscroll::Fit, cx);
3391 }
3392 }
3393
3394 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3395 self.buffer
3396 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3397 }
3398
3399 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3400 self.move_selections(cx, |map, selection| {
3401 let cursor = if selection.is_empty() {
3402 movement::left(map, selection.start)
3403 } else {
3404 selection.start
3405 };
3406 selection.collapse_to(cursor, SelectionGoal::None);
3407 });
3408 }
3409
3410 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3411 self.move_selection_heads(cx, |map, head, _| {
3412 (movement::left(map, head), SelectionGoal::None)
3413 });
3414 }
3415
3416 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3417 self.move_selections(cx, |map, selection| {
3418 let cursor = if selection.is_empty() {
3419 movement::right(map, selection.end)
3420 } else {
3421 selection.end
3422 };
3423 selection.collapse_to(cursor, SelectionGoal::None)
3424 });
3425 }
3426
3427 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3428 self.move_selection_heads(cx, |map, head, _| {
3429 (movement::right(map, head), SelectionGoal::None)
3430 });
3431 }
3432
3433 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3434 if self.take_rename(true, cx).is_some() {
3435 return;
3436 }
3437
3438 if let Some(context_menu) = self.context_menu.as_mut() {
3439 if context_menu.select_prev(cx) {
3440 return;
3441 }
3442 }
3443
3444 if matches!(self.mode, EditorMode::SingleLine) {
3445 cx.propagate_action();
3446 return;
3447 }
3448
3449 self.move_selections(cx, |map, selection| {
3450 if !selection.is_empty() {
3451 selection.goal = SelectionGoal::None;
3452 }
3453 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3454 selection.collapse_to(cursor, goal);
3455 });
3456 }
3457
3458 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3459 self.move_selection_heads(cx, movement::up)
3460 }
3461
3462 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3463 self.take_rename(true, cx);
3464
3465 if let Some(context_menu) = self.context_menu.as_mut() {
3466 if context_menu.select_next(cx) {
3467 return;
3468 }
3469 }
3470
3471 if matches!(self.mode, EditorMode::SingleLine) {
3472 cx.propagate_action();
3473 return;
3474 }
3475
3476 self.move_selections(cx, |map, selection| {
3477 if !selection.is_empty() {
3478 selection.goal = SelectionGoal::None;
3479 }
3480 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3481 selection.collapse_to(cursor, goal);
3482 });
3483 }
3484
3485 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3486 self.move_selection_heads(cx, movement::down)
3487 }
3488
3489 pub fn move_to_previous_word_start(
3490 &mut self,
3491 _: &MoveToPreviousWordStart,
3492 cx: &mut ViewContext<Self>,
3493 ) {
3494 self.move_cursors(cx, |map, head, _| {
3495 (
3496 movement::previous_word_start(map, head),
3497 SelectionGoal::None,
3498 )
3499 });
3500 }
3501
3502 pub fn select_to_previous_word_start(
3503 &mut self,
3504 _: &SelectToPreviousWordBoundary,
3505 cx: &mut ViewContext<Self>,
3506 ) {
3507 self.move_selection_heads(cx, |map, head, _| {
3508 (
3509 movement::previous_word_start(map, head),
3510 SelectionGoal::None,
3511 )
3512 });
3513 }
3514
3515 pub fn delete_to_previous_word_start(
3516 &mut self,
3517 _: &DeleteToPreviousWordBoundary,
3518 cx: &mut ViewContext<Self>,
3519 ) {
3520 self.transact(cx, |this, cx| {
3521 this.move_selections(cx, |map, selection| {
3522 if selection.is_empty() {
3523 let cursor = movement::previous_word_start(map, selection.head());
3524 selection.set_head(cursor, SelectionGoal::None);
3525 }
3526 });
3527 this.insert("", cx);
3528 });
3529 }
3530
3531 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3532 self.move_cursors(cx, |map, head, _| {
3533 (movement::next_word_end(map, head), SelectionGoal::None)
3534 });
3535 }
3536
3537 pub fn select_to_next_word_end(
3538 &mut self,
3539 _: &SelectToNextWordBoundary,
3540 cx: &mut ViewContext<Self>,
3541 ) {
3542 self.move_selection_heads(cx, |map, head, _| {
3543 (movement::next_word_end(map, head), SelectionGoal::None)
3544 });
3545 }
3546
3547 pub fn delete_to_next_word_end(
3548 &mut self,
3549 _: &DeleteToNextWordBoundary,
3550 cx: &mut ViewContext<Self>,
3551 ) {
3552 self.transact(cx, |this, cx| {
3553 this.move_selections(cx, |map, selection| {
3554 if selection.is_empty() {
3555 let cursor = movement::next_word_end(map, selection.head());
3556 selection.set_head(cursor, SelectionGoal::None);
3557 }
3558 });
3559 this.insert("", cx);
3560 });
3561 }
3562
3563 pub fn move_to_beginning_of_line(
3564 &mut self,
3565 _: &MoveToBeginningOfLine,
3566 cx: &mut ViewContext<Self>,
3567 ) {
3568 self.move_cursors(cx, |map, head, _| {
3569 (
3570 movement::line_beginning(map, head, true),
3571 SelectionGoal::None,
3572 )
3573 });
3574 }
3575
3576 pub fn select_to_beginning_of_line(
3577 &mut self,
3578 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3579 cx: &mut ViewContext<Self>,
3580 ) {
3581 self.move_selection_heads(cx, |map, head, _| {
3582 (
3583 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3584 SelectionGoal::None,
3585 )
3586 });
3587 }
3588
3589 pub fn delete_to_beginning_of_line(
3590 &mut self,
3591 _: &DeleteToBeginningOfLine,
3592 cx: &mut ViewContext<Self>,
3593 ) {
3594 self.transact(cx, |this, cx| {
3595 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3596 this.backspace(&Backspace, cx);
3597 });
3598 }
3599
3600 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3601 self.move_cursors(cx, |map, head, _| {
3602 (movement::line_end(map, head, true), SelectionGoal::None)
3603 });
3604 }
3605
3606 pub fn select_to_end_of_line(
3607 &mut self,
3608 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3609 cx: &mut ViewContext<Self>,
3610 ) {
3611 self.move_selection_heads(cx, |map, head, _| {
3612 (
3613 movement::line_end(map, head, *stop_at_soft_boundaries),
3614 SelectionGoal::None,
3615 )
3616 });
3617 }
3618
3619 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3620 self.transact(cx, |this, cx| {
3621 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3622 this.delete(&Delete, cx);
3623 });
3624 }
3625
3626 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3627 self.transact(cx, |this, cx| {
3628 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3629 this.cut(&Cut, cx);
3630 });
3631 }
3632
3633 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3634 if matches!(self.mode, EditorMode::SingleLine) {
3635 cx.propagate_action();
3636 return;
3637 }
3638
3639 let selection = Selection {
3640 id: post_inc(&mut self.next_selection_id),
3641 start: 0,
3642 end: 0,
3643 reversed: false,
3644 goal: SelectionGoal::None,
3645 };
3646 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3647 }
3648
3649 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3650 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3651 selection.set_head(Point::zero(), SelectionGoal::None);
3652 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3653 }
3654
3655 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3656 if matches!(self.mode, EditorMode::SingleLine) {
3657 cx.propagate_action();
3658 return;
3659 }
3660
3661 let cursor = self.buffer.read(cx).read(cx).len();
3662 let selection = Selection {
3663 id: post_inc(&mut self.next_selection_id),
3664 start: cursor,
3665 end: cursor,
3666 reversed: false,
3667 goal: SelectionGoal::None,
3668 };
3669 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3670 }
3671
3672 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3673 self.nav_history = nav_history;
3674 }
3675
3676 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3677 self.nav_history.as_ref()
3678 }
3679
3680 fn push_to_nav_history(
3681 &self,
3682 position: Anchor,
3683 new_position: Option<Point>,
3684 cx: &mut ViewContext<Self>,
3685 ) {
3686 if let Some(nav_history) = &self.nav_history {
3687 let buffer = self.buffer.read(cx).read(cx);
3688 let offset = position.to_offset(&buffer);
3689 let point = position.to_point(&buffer);
3690 drop(buffer);
3691
3692 if let Some(new_position) = new_position {
3693 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3694 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3695 return;
3696 }
3697 }
3698
3699 nav_history.push(Some(NavigationData {
3700 anchor: position,
3701 offset,
3702 }));
3703 }
3704 }
3705
3706 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3707 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3708 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3709 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3710 }
3711
3712 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3713 let selection = Selection {
3714 id: post_inc(&mut self.next_selection_id),
3715 start: 0,
3716 end: self.buffer.read(cx).read(cx).len(),
3717 reversed: false,
3718 goal: SelectionGoal::None,
3719 };
3720 self.update_selections(vec![selection], None, cx);
3721 }
3722
3723 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3724 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3725 let mut selections = self.local_selections::<Point>(cx);
3726 let max_point = display_map.buffer_snapshot.max_point();
3727 for selection in &mut selections {
3728 let rows = selection.spanned_rows(true, &display_map);
3729 selection.start = Point::new(rows.start, 0);
3730 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3731 selection.reversed = false;
3732 }
3733 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3734 }
3735
3736 pub fn split_selection_into_lines(
3737 &mut self,
3738 _: &SplitSelectionIntoLines,
3739 cx: &mut ViewContext<Self>,
3740 ) {
3741 let mut to_unfold = Vec::new();
3742 let mut new_selections = Vec::new();
3743 {
3744 let selections = self.local_selections::<Point>(cx);
3745 let buffer = self.buffer.read(cx).read(cx);
3746 for selection in selections {
3747 for row in selection.start.row..selection.end.row {
3748 let cursor = Point::new(row, buffer.line_len(row));
3749 new_selections.push(Selection {
3750 id: post_inc(&mut self.next_selection_id),
3751 start: cursor,
3752 end: cursor,
3753 reversed: false,
3754 goal: SelectionGoal::None,
3755 });
3756 }
3757 new_selections.push(Selection {
3758 id: selection.id,
3759 start: selection.end,
3760 end: selection.end,
3761 reversed: false,
3762 goal: SelectionGoal::None,
3763 });
3764 to_unfold.push(selection.start..selection.end);
3765 }
3766 }
3767 self.unfold_ranges(to_unfold, cx);
3768 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3769 }
3770
3771 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3772 self.add_selection(true, cx);
3773 }
3774
3775 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3776 self.add_selection(false, cx);
3777 }
3778
3779 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3780 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3781 let mut selections = self.local_selections::<Point>(cx);
3782 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3783 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3784 let range = oldest_selection.display_range(&display_map).sorted();
3785 let columns = cmp::min(range.start.column(), range.end.column())
3786 ..cmp::max(range.start.column(), range.end.column());
3787
3788 selections.clear();
3789 let mut stack = Vec::new();
3790 for row in range.start.row()..=range.end.row() {
3791 if let Some(selection) = self.build_columnar_selection(
3792 &display_map,
3793 row,
3794 &columns,
3795 oldest_selection.reversed,
3796 ) {
3797 stack.push(selection.id);
3798 selections.push(selection);
3799 }
3800 }
3801
3802 if above {
3803 stack.reverse();
3804 }
3805
3806 AddSelectionsState { above, stack }
3807 });
3808
3809 let last_added_selection = *state.stack.last().unwrap();
3810 let mut new_selections = Vec::new();
3811 if above == state.above {
3812 let end_row = if above {
3813 0
3814 } else {
3815 display_map.max_point().row()
3816 };
3817
3818 'outer: for selection in selections {
3819 if selection.id == last_added_selection {
3820 let range = selection.display_range(&display_map).sorted();
3821 debug_assert_eq!(range.start.row(), range.end.row());
3822 let mut row = range.start.row();
3823 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3824 {
3825 start..end
3826 } else {
3827 cmp::min(range.start.column(), range.end.column())
3828 ..cmp::max(range.start.column(), range.end.column())
3829 };
3830
3831 while row != end_row {
3832 if above {
3833 row -= 1;
3834 } else {
3835 row += 1;
3836 }
3837
3838 if let Some(new_selection) = self.build_columnar_selection(
3839 &display_map,
3840 row,
3841 &columns,
3842 selection.reversed,
3843 ) {
3844 state.stack.push(new_selection.id);
3845 if above {
3846 new_selections.push(new_selection);
3847 new_selections.push(selection);
3848 } else {
3849 new_selections.push(selection);
3850 new_selections.push(new_selection);
3851 }
3852
3853 continue 'outer;
3854 }
3855 }
3856 }
3857
3858 new_selections.push(selection);
3859 }
3860 } else {
3861 new_selections = selections;
3862 new_selections.retain(|s| s.id != last_added_selection);
3863 state.stack.pop();
3864 }
3865
3866 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3867 if state.stack.len() > 1 {
3868 self.add_selections_state = Some(state);
3869 }
3870 }
3871
3872 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3873 let replace_newest = action.0;
3874 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3875 let buffer = &display_map.buffer_snapshot;
3876 let mut selections = self.local_selections::<usize>(cx);
3877 if let Some(mut select_next_state) = self.select_next_state.take() {
3878 let query = &select_next_state.query;
3879 if !select_next_state.done {
3880 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3881 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3882 let mut next_selected_range = None;
3883
3884 let bytes_after_last_selection =
3885 buffer.bytes_in_range(last_selection.end..buffer.len());
3886 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3887 let query_matches = query
3888 .stream_find_iter(bytes_after_last_selection)
3889 .map(|result| (last_selection.end, result))
3890 .chain(
3891 query
3892 .stream_find_iter(bytes_before_first_selection)
3893 .map(|result| (0, result)),
3894 );
3895 for (start_offset, query_match) in query_matches {
3896 let query_match = query_match.unwrap(); // can only fail due to I/O
3897 let offset_range =
3898 start_offset + query_match.start()..start_offset + query_match.end();
3899 let display_range = offset_range.start.to_display_point(&display_map)
3900 ..offset_range.end.to_display_point(&display_map);
3901
3902 if !select_next_state.wordwise
3903 || (!movement::is_inside_word(&display_map, display_range.start)
3904 && !movement::is_inside_word(&display_map, display_range.end))
3905 {
3906 next_selected_range = Some(offset_range);
3907 break;
3908 }
3909 }
3910
3911 if let Some(next_selected_range) = next_selected_range {
3912 if replace_newest {
3913 if let Some(newest_id) =
3914 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3915 {
3916 selections.retain(|s| s.id != newest_id);
3917 }
3918 }
3919 selections.push(Selection {
3920 id: post_inc(&mut self.next_selection_id),
3921 start: next_selected_range.start,
3922 end: next_selected_range.end,
3923 reversed: false,
3924 goal: SelectionGoal::None,
3925 });
3926 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3927 } else {
3928 select_next_state.done = true;
3929 }
3930 }
3931
3932 self.select_next_state = Some(select_next_state);
3933 } else if selections.len() == 1 {
3934 let selection = selections.last_mut().unwrap();
3935 if selection.start == selection.end {
3936 let word_range = movement::surrounding_word(
3937 &display_map,
3938 selection.start.to_display_point(&display_map),
3939 );
3940 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3941 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3942 selection.goal = SelectionGoal::None;
3943 selection.reversed = false;
3944
3945 let query = buffer
3946 .text_for_range(selection.start..selection.end)
3947 .collect::<String>();
3948 let select_state = SelectNextState {
3949 query: AhoCorasick::new_auto_configured(&[query]),
3950 wordwise: true,
3951 done: false,
3952 };
3953 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3954 self.select_next_state = Some(select_state);
3955 } else {
3956 let query = buffer
3957 .text_for_range(selection.start..selection.end)
3958 .collect::<String>();
3959 self.select_next_state = Some(SelectNextState {
3960 query: AhoCorasick::new_auto_configured(&[query]),
3961 wordwise: false,
3962 done: false,
3963 });
3964 self.select_next(action, cx);
3965 }
3966 }
3967 }
3968
3969 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3970 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3971 // as that portion won't be used for detecting if a line is a comment.
3972 let full_comment_prefix =
3973 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3974 prefix.to_string()
3975 } else {
3976 return;
3977 };
3978 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3979 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3980
3981 self.start_transaction(cx);
3982 let mut selections = self.local_selections::<Point>(cx);
3983 let mut all_selection_lines_are_comments = true;
3984 let mut edit_ranges = Vec::new();
3985 let mut last_toggled_row = None;
3986 self.buffer.update(cx, |buffer, cx| {
3987 for selection in &mut selections {
3988 edit_ranges.clear();
3989 let snapshot = buffer.snapshot(cx);
3990
3991 let end_row =
3992 if selection.end.row > selection.start.row && selection.end.column == 0 {
3993 selection.end.row
3994 } else {
3995 selection.end.row + 1
3996 };
3997
3998 for row in selection.start.row..end_row {
3999 // If multiple selections contain a given row, avoid processing that
4000 // row more than once.
4001 if last_toggled_row == Some(row) {
4002 continue;
4003 } else {
4004 last_toggled_row = Some(row);
4005 }
4006
4007 if snapshot.is_line_blank(row) {
4008 continue;
4009 }
4010
4011 let start = Point::new(row, snapshot.indent_column_for_line(row));
4012 let mut line_bytes = snapshot
4013 .bytes_in_range(start..snapshot.max_point())
4014 .flatten()
4015 .copied();
4016
4017 // If this line currently begins with the line comment prefix, then record
4018 // the range containing the prefix.
4019 if all_selection_lines_are_comments
4020 && line_bytes
4021 .by_ref()
4022 .take(comment_prefix.len())
4023 .eq(comment_prefix.bytes())
4024 {
4025 // Include any whitespace that matches the comment prefix.
4026 let matching_whitespace_len = line_bytes
4027 .zip(comment_prefix_whitespace.bytes())
4028 .take_while(|(a, b)| a == b)
4029 .count() as u32;
4030 let end = Point::new(
4031 row,
4032 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4033 );
4034 edit_ranges.push(start..end);
4035 }
4036 // If this line does not begin with the line comment prefix, then record
4037 // the position where the prefix should be inserted.
4038 else {
4039 all_selection_lines_are_comments = false;
4040 edit_ranges.push(start..start);
4041 }
4042 }
4043
4044 if !edit_ranges.is_empty() {
4045 if all_selection_lines_are_comments {
4046 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4047 } else {
4048 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4049 let edit_ranges = edit_ranges.iter().map(|range| {
4050 let position = Point::new(range.start.row, min_column);
4051 position..position
4052 });
4053 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4054 }
4055 }
4056 }
4057 });
4058
4059 self.update_selections(
4060 self.local_selections::<usize>(cx),
4061 Some(Autoscroll::Fit),
4062 cx,
4063 );
4064 self.end_transaction(cx);
4065 }
4066
4067 pub fn select_larger_syntax_node(
4068 &mut self,
4069 _: &SelectLargerSyntaxNode,
4070 cx: &mut ViewContext<Self>,
4071 ) {
4072 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4073 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4074 let buffer = self.buffer.read(cx).snapshot(cx);
4075
4076 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4077 let mut selected_larger_node = false;
4078 let new_selections = old_selections
4079 .iter()
4080 .map(|selection| {
4081 let old_range = selection.start..selection.end;
4082 let mut new_range = old_range.clone();
4083 while let Some(containing_range) =
4084 buffer.range_for_syntax_ancestor(new_range.clone())
4085 {
4086 new_range = containing_range;
4087 if !display_map.intersects_fold(new_range.start)
4088 && !display_map.intersects_fold(new_range.end)
4089 {
4090 break;
4091 }
4092 }
4093
4094 selected_larger_node |= new_range != old_range;
4095 Selection {
4096 id: selection.id,
4097 start: new_range.start,
4098 end: new_range.end,
4099 goal: SelectionGoal::None,
4100 reversed: selection.reversed,
4101 }
4102 })
4103 .collect::<Vec<_>>();
4104
4105 if selected_larger_node {
4106 stack.push(old_selections);
4107 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4108 }
4109 self.select_larger_syntax_node_stack = stack;
4110 }
4111
4112 pub fn select_smaller_syntax_node(
4113 &mut self,
4114 _: &SelectSmallerSyntaxNode,
4115 cx: &mut ViewContext<Self>,
4116 ) {
4117 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4118 if let Some(selections) = stack.pop() {
4119 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4120 }
4121 self.select_larger_syntax_node_stack = stack;
4122 }
4123
4124 pub fn move_to_enclosing_bracket(
4125 &mut self,
4126 _: &MoveToEnclosingBracket,
4127 cx: &mut ViewContext<Self>,
4128 ) {
4129 let mut selections = self.local_selections::<usize>(cx);
4130 let buffer = self.buffer.read(cx).snapshot(cx);
4131 for selection in &mut selections {
4132 if let Some((open_range, close_range)) =
4133 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4134 {
4135 let close_range = close_range.to_inclusive();
4136 let destination = if close_range.contains(&selection.start)
4137 && close_range.contains(&selection.end)
4138 {
4139 open_range.end
4140 } else {
4141 *close_range.start()
4142 };
4143 selection.start = destination;
4144 selection.end = destination;
4145 }
4146 }
4147
4148 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4149 }
4150
4151 pub fn go_to_diagnostic(
4152 &mut self,
4153 &GoToDiagnostic(direction): &GoToDiagnostic,
4154 cx: &mut ViewContext<Self>,
4155 ) {
4156 let buffer = self.buffer.read(cx).snapshot(cx);
4157 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4158 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4159 active_diagnostics
4160 .primary_range
4161 .to_offset(&buffer)
4162 .to_inclusive()
4163 });
4164 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4165 if active_primary_range.contains(&selection.head()) {
4166 *active_primary_range.end()
4167 } else {
4168 selection.head()
4169 }
4170 } else {
4171 selection.head()
4172 };
4173
4174 loop {
4175 let mut diagnostics = if direction == Direction::Prev {
4176 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4177 } else {
4178 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4179 };
4180 let group = diagnostics.find_map(|entry| {
4181 if entry.diagnostic.is_primary
4182 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4183 && !entry.range.is_empty()
4184 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4185 {
4186 Some((entry.range, entry.diagnostic.group_id))
4187 } else {
4188 None
4189 }
4190 });
4191
4192 if let Some((primary_range, group_id)) = group {
4193 self.activate_diagnostics(group_id, cx);
4194 self.update_selections(
4195 vec![Selection {
4196 id: selection.id,
4197 start: primary_range.start,
4198 end: primary_range.start,
4199 reversed: false,
4200 goal: SelectionGoal::None,
4201 }],
4202 Some(Autoscroll::Center),
4203 cx,
4204 );
4205 break;
4206 } else {
4207 // Cycle around to the start of the buffer, potentially moving back to the start of
4208 // the currently active diagnostic.
4209 active_primary_range.take();
4210 if direction == Direction::Prev {
4211 if search_start == buffer.len() {
4212 break;
4213 } else {
4214 search_start = buffer.len();
4215 }
4216 } else {
4217 if search_start == 0 {
4218 break;
4219 } else {
4220 search_start = 0;
4221 }
4222 }
4223 }
4224 }
4225 }
4226
4227 pub fn go_to_definition(
4228 workspace: &mut Workspace,
4229 _: &GoToDefinition,
4230 cx: &mut ViewContext<Workspace>,
4231 ) {
4232 let active_item = workspace.active_item(cx);
4233 let editor_handle = if let Some(editor) = active_item
4234 .as_ref()
4235 .and_then(|item| item.act_as::<Self>(cx))
4236 {
4237 editor
4238 } else {
4239 return;
4240 };
4241
4242 let editor = editor_handle.read(cx);
4243 let head = editor.newest_selection::<usize>(cx).head();
4244 let (buffer, head) =
4245 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4246 text_anchor
4247 } else {
4248 return;
4249 };
4250
4251 let project = workspace.project().clone();
4252 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4253 cx.spawn(|workspace, mut cx| async move {
4254 let definitions = definitions.await?;
4255 workspace.update(&mut cx, |workspace, cx| {
4256 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4257 for definition in definitions {
4258 let range = definition.range.to_offset(definition.buffer.read(cx));
4259
4260 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4261 target_editor_handle.update(cx, |target_editor, cx| {
4262 // When selecting a definition in a different buffer, disable the nav history
4263 // to avoid creating a history entry at the previous cursor location.
4264 if editor_handle != target_editor_handle {
4265 nav_history.borrow_mut().disable();
4266 }
4267 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4268 nav_history.borrow_mut().enable();
4269 });
4270 }
4271 });
4272
4273 Ok::<(), anyhow::Error>(())
4274 })
4275 .detach_and_log_err(cx);
4276 }
4277
4278 pub fn find_all_references(
4279 workspace: &mut Workspace,
4280 _: &FindAllReferences,
4281 cx: &mut ViewContext<Workspace>,
4282 ) -> Option<Task<Result<()>>> {
4283 let active_item = workspace.active_item(cx)?;
4284 let editor_handle = active_item.act_as::<Self>(cx)?;
4285
4286 let editor = editor_handle.read(cx);
4287 let head = editor.newest_selection::<usize>(cx).head();
4288 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4289 let replica_id = editor.replica_id(cx);
4290
4291 let project = workspace.project().clone();
4292 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4293 Some(cx.spawn(|workspace, mut cx| async move {
4294 let mut locations = references.await?;
4295 if locations.is_empty() {
4296 return Ok(());
4297 }
4298
4299 locations.sort_by_key(|location| location.buffer.id());
4300 let mut locations = locations.into_iter().peekable();
4301 let mut ranges_to_highlight = Vec::new();
4302
4303 let excerpt_buffer = cx.add_model(|cx| {
4304 let mut symbol_name = None;
4305 let mut multibuffer = MultiBuffer::new(replica_id);
4306 while let Some(location) = locations.next() {
4307 let buffer = location.buffer.read(cx);
4308 let mut ranges_for_buffer = Vec::new();
4309 let range = location.range.to_offset(buffer);
4310 ranges_for_buffer.push(range.clone());
4311 if symbol_name.is_none() {
4312 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4313 }
4314
4315 while let Some(next_location) = locations.peek() {
4316 if next_location.buffer == location.buffer {
4317 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4318 locations.next();
4319 } else {
4320 break;
4321 }
4322 }
4323
4324 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4325 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4326 location.buffer.clone(),
4327 ranges_for_buffer,
4328 1,
4329 cx,
4330 ));
4331 }
4332 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4333 });
4334
4335 workspace.update(&mut cx, |workspace, cx| {
4336 let editor =
4337 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4338 editor.update(cx, |editor, cx| {
4339 let color = editor.style(cx).highlighted_line_background;
4340 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4341 });
4342 workspace.add_item(Box::new(editor), cx);
4343 });
4344
4345 Ok(())
4346 }))
4347 }
4348
4349 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4350 use language::ToOffset as _;
4351
4352 let project = self.project.clone()?;
4353 let selection = self.newest_anchor_selection().clone();
4354 let (cursor_buffer, cursor_buffer_position) = self
4355 .buffer
4356 .read(cx)
4357 .text_anchor_for_position(selection.head(), cx)?;
4358 let (tail_buffer, _) = self
4359 .buffer
4360 .read(cx)
4361 .text_anchor_for_position(selection.tail(), cx)?;
4362 if tail_buffer != cursor_buffer {
4363 return None;
4364 }
4365
4366 let snapshot = cursor_buffer.read(cx).snapshot();
4367 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4368 let prepare_rename = project.update(cx, |project, cx| {
4369 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4370 });
4371
4372 Some(cx.spawn(|this, mut cx| async move {
4373 if let Some(rename_range) = prepare_rename.await? {
4374 let rename_buffer_range = rename_range.to_offset(&snapshot);
4375 let cursor_offset_in_rename_range =
4376 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4377
4378 this.update(&mut cx, |this, cx| {
4379 this.take_rename(false, cx);
4380 let style = this.style(cx);
4381 let buffer = this.buffer.read(cx).read(cx);
4382 let cursor_offset = selection.head().to_offset(&buffer);
4383 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4384 let rename_end = rename_start + rename_buffer_range.len();
4385 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4386 let mut old_highlight_id = None;
4387 let old_name = buffer
4388 .chunks(rename_start..rename_end, true)
4389 .map(|chunk| {
4390 if old_highlight_id.is_none() {
4391 old_highlight_id = chunk.syntax_highlight_id;
4392 }
4393 chunk.text
4394 })
4395 .collect();
4396
4397 drop(buffer);
4398
4399 // Position the selection in the rename editor so that it matches the current selection.
4400 this.show_local_selections = false;
4401 let rename_editor = cx.add_view(|cx| {
4402 let mut editor = Editor::single_line(None, cx);
4403 if let Some(old_highlight_id) = old_highlight_id {
4404 editor.override_text_style =
4405 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4406 }
4407 editor
4408 .buffer
4409 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4410 editor.select_all(&SelectAll, cx);
4411 editor
4412 });
4413
4414 let ranges = this
4415 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4416 .into_iter()
4417 .flat_map(|(_, ranges)| ranges)
4418 .chain(
4419 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4420 .into_iter()
4421 .flat_map(|(_, ranges)| ranges),
4422 )
4423 .collect();
4424
4425 this.highlight_text::<Rename>(
4426 ranges,
4427 HighlightStyle {
4428 fade_out: Some(style.rename_fade),
4429 ..Default::default()
4430 },
4431 cx,
4432 );
4433 cx.focus(&rename_editor);
4434 let block_id = this.insert_blocks(
4435 [BlockProperties {
4436 position: range.start.clone(),
4437 height: 1,
4438 render: Arc::new({
4439 let editor = rename_editor.clone();
4440 move |cx: &BlockContext| {
4441 ChildView::new(editor.clone())
4442 .contained()
4443 .with_padding_left(cx.anchor_x)
4444 .boxed()
4445 }
4446 }),
4447 disposition: BlockDisposition::Below,
4448 }],
4449 cx,
4450 )[0];
4451 this.pending_rename = Some(RenameState {
4452 range,
4453 old_name,
4454 editor: rename_editor,
4455 block_id,
4456 });
4457 });
4458 }
4459
4460 Ok(())
4461 }))
4462 }
4463
4464 pub fn confirm_rename(
4465 workspace: &mut Workspace,
4466 _: &ConfirmRename,
4467 cx: &mut ViewContext<Workspace>,
4468 ) -> Option<Task<Result<()>>> {
4469 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4470
4471 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4472 let rename = editor.take_rename(false, cx)?;
4473 let buffer = editor.buffer.read(cx);
4474 let (start_buffer, start) =
4475 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4476 let (end_buffer, end) =
4477 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4478 if start_buffer == end_buffer {
4479 let new_name = rename.editor.read(cx).text(cx);
4480 Some((start_buffer, start..end, rename.old_name, new_name))
4481 } else {
4482 None
4483 }
4484 })?;
4485
4486 let rename = workspace.project().clone().update(cx, |project, cx| {
4487 project.perform_rename(
4488 buffer.clone(),
4489 range.start.clone(),
4490 new_name.clone(),
4491 true,
4492 cx,
4493 )
4494 });
4495
4496 Some(cx.spawn(|workspace, mut cx| async move {
4497 let project_transaction = rename.await?;
4498 Self::open_project_transaction(
4499 editor.clone(),
4500 workspace,
4501 project_transaction,
4502 format!("Rename: {} → {}", old_name, new_name),
4503 cx.clone(),
4504 )
4505 .await?;
4506
4507 editor.update(&mut cx, |editor, cx| {
4508 editor.refresh_document_highlights(cx);
4509 });
4510 Ok(())
4511 }))
4512 }
4513
4514 fn take_rename(
4515 &mut self,
4516 moving_cursor: bool,
4517 cx: &mut ViewContext<Self>,
4518 ) -> Option<RenameState> {
4519 let rename = self.pending_rename.take()?;
4520 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4521 self.clear_text_highlights::<Rename>(cx);
4522 self.show_local_selections = true;
4523
4524 if moving_cursor {
4525 let cursor_in_rename_editor =
4526 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4527
4528 // Update the selection to match the position of the selection inside
4529 // the rename editor.
4530 let snapshot = self.buffer.read(cx).read(cx);
4531 let rename_range = rename.range.to_offset(&snapshot);
4532 let cursor_in_editor = snapshot
4533 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4534 .min(rename_range.end);
4535 drop(snapshot);
4536
4537 self.update_selections(
4538 vec![Selection {
4539 id: self.newest_anchor_selection().id,
4540 start: cursor_in_editor,
4541 end: cursor_in_editor,
4542 reversed: false,
4543 goal: SelectionGoal::None,
4544 }],
4545 None,
4546 cx,
4547 );
4548 }
4549
4550 Some(rename)
4551 }
4552
4553 fn invalidate_rename_range(
4554 &mut self,
4555 buffer: &MultiBufferSnapshot,
4556 cx: &mut ViewContext<Self>,
4557 ) {
4558 if let Some(rename) = self.pending_rename.as_ref() {
4559 if self.selections.len() == 1 {
4560 let head = self.selections[0].head().to_offset(buffer);
4561 let range = rename.range.to_offset(buffer).to_inclusive();
4562 if range.contains(&head) {
4563 return;
4564 }
4565 }
4566 let rename = self.pending_rename.take().unwrap();
4567 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4568 self.clear_background_highlights::<Rename>(cx);
4569 }
4570 }
4571
4572 #[cfg(any(test, feature = "test-support"))]
4573 pub fn pending_rename(&self) -> Option<&RenameState> {
4574 self.pending_rename.as_ref()
4575 }
4576
4577 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4578 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4579 let buffer = self.buffer.read(cx).snapshot(cx);
4580 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4581 let is_valid = buffer
4582 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4583 .any(|entry| {
4584 entry.diagnostic.is_primary
4585 && !entry.range.is_empty()
4586 && entry.range.start == primary_range_start
4587 && entry.diagnostic.message == active_diagnostics.primary_message
4588 });
4589
4590 if is_valid != active_diagnostics.is_valid {
4591 active_diagnostics.is_valid = is_valid;
4592 let mut new_styles = HashMap::default();
4593 for (block_id, diagnostic) in &active_diagnostics.blocks {
4594 new_styles.insert(
4595 *block_id,
4596 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4597 );
4598 }
4599 self.display_map
4600 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4601 }
4602 }
4603 }
4604
4605 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4606 self.dismiss_diagnostics(cx);
4607 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4608 let buffer = self.buffer.read(cx).snapshot(cx);
4609
4610 let mut primary_range = None;
4611 let mut primary_message = None;
4612 let mut group_end = Point::zero();
4613 let diagnostic_group = buffer
4614 .diagnostic_group::<Point>(group_id)
4615 .map(|entry| {
4616 if entry.range.end > group_end {
4617 group_end = entry.range.end;
4618 }
4619 if entry.diagnostic.is_primary {
4620 primary_range = Some(entry.range.clone());
4621 primary_message = Some(entry.diagnostic.message.clone());
4622 }
4623 entry
4624 })
4625 .collect::<Vec<_>>();
4626 let primary_range = primary_range.unwrap();
4627 let primary_message = primary_message.unwrap();
4628 let primary_range =
4629 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4630
4631 let blocks = display_map
4632 .insert_blocks(
4633 diagnostic_group.iter().map(|entry| {
4634 let diagnostic = entry.diagnostic.clone();
4635 let message_height = diagnostic.message.lines().count() as u8;
4636 BlockProperties {
4637 position: buffer.anchor_after(entry.range.start),
4638 height: message_height,
4639 render: diagnostic_block_renderer(diagnostic, true),
4640 disposition: BlockDisposition::Below,
4641 }
4642 }),
4643 cx,
4644 )
4645 .into_iter()
4646 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4647 .collect();
4648
4649 Some(ActiveDiagnosticGroup {
4650 primary_range,
4651 primary_message,
4652 blocks,
4653 is_valid: true,
4654 })
4655 });
4656 }
4657
4658 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4659 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4660 self.display_map.update(cx, |display_map, cx| {
4661 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4662 });
4663 cx.notify();
4664 }
4665 }
4666
4667 fn build_columnar_selection(
4668 &mut self,
4669 display_map: &DisplaySnapshot,
4670 row: u32,
4671 columns: &Range<u32>,
4672 reversed: bool,
4673 ) -> Option<Selection<Point>> {
4674 let is_empty = columns.start == columns.end;
4675 let line_len = display_map.line_len(row);
4676 if columns.start < line_len || (is_empty && columns.start == line_len) {
4677 let start = DisplayPoint::new(row, columns.start);
4678 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4679 Some(Selection {
4680 id: post_inc(&mut self.next_selection_id),
4681 start: start.to_point(display_map),
4682 end: end.to_point(display_map),
4683 reversed,
4684 goal: SelectionGoal::ColumnRange {
4685 start: columns.start,
4686 end: columns.end,
4687 },
4688 })
4689 } else {
4690 None
4691 }
4692 }
4693
4694 pub fn local_selections_in_range(
4695 &self,
4696 range: Range<Anchor>,
4697 display_map: &DisplaySnapshot,
4698 ) -> Vec<Selection<Point>> {
4699 let buffer = &display_map.buffer_snapshot;
4700
4701 let start_ix = match self
4702 .selections
4703 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4704 {
4705 Ok(ix) | Err(ix) => ix,
4706 };
4707 let end_ix = match self
4708 .selections
4709 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4710 {
4711 Ok(ix) => ix + 1,
4712 Err(ix) => ix,
4713 };
4714
4715 fn point_selection(
4716 selection: &Selection<Anchor>,
4717 buffer: &MultiBufferSnapshot,
4718 ) -> Selection<Point> {
4719 let start = selection.start.to_point(&buffer);
4720 let end = selection.end.to_point(&buffer);
4721 Selection {
4722 id: selection.id,
4723 start,
4724 end,
4725 reversed: selection.reversed,
4726 goal: selection.goal,
4727 }
4728 }
4729
4730 self.selections[start_ix..end_ix]
4731 .iter()
4732 .chain(
4733 self.pending_selection
4734 .as_ref()
4735 .map(|pending| &pending.selection),
4736 )
4737 .map(|s| point_selection(s, &buffer))
4738 .collect()
4739 }
4740
4741 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4742 where
4743 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4744 {
4745 let buffer = self.buffer.read(cx).snapshot(cx);
4746 let mut selections = self
4747 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4748 .peekable();
4749
4750 let mut pending_selection = self.pending_selection::<D>(&buffer);
4751
4752 iter::from_fn(move || {
4753 if let Some(pending) = pending_selection.as_mut() {
4754 while let Some(next_selection) = selections.peek() {
4755 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4756 let next_selection = selections.next().unwrap();
4757 if next_selection.start < pending.start {
4758 pending.start = next_selection.start;
4759 }
4760 if next_selection.end > pending.end {
4761 pending.end = next_selection.end;
4762 }
4763 } else if next_selection.end < pending.start {
4764 return selections.next();
4765 } else {
4766 break;
4767 }
4768 }
4769
4770 pending_selection.take()
4771 } else {
4772 selections.next()
4773 }
4774 })
4775 .collect()
4776 }
4777
4778 fn resolve_selections<'a, D, I>(
4779 &self,
4780 selections: I,
4781 snapshot: &MultiBufferSnapshot,
4782 ) -> impl 'a + Iterator<Item = Selection<D>>
4783 where
4784 D: TextDimension + Ord + Sub<D, Output = D>,
4785 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4786 {
4787 let (to_summarize, selections) = selections.into_iter().tee();
4788 let mut summaries = snapshot
4789 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4790 .into_iter();
4791 selections.map(move |s| Selection {
4792 id: s.id,
4793 start: summaries.next().unwrap(),
4794 end: summaries.next().unwrap(),
4795 reversed: s.reversed,
4796 goal: s.goal,
4797 })
4798 }
4799
4800 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4801 &self,
4802 snapshot: &MultiBufferSnapshot,
4803 ) -> Option<Selection<D>> {
4804 self.pending_selection
4805 .as_ref()
4806 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4807 }
4808
4809 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4810 &self,
4811 selection: &Selection<Anchor>,
4812 buffer: &MultiBufferSnapshot,
4813 ) -> Selection<D> {
4814 Selection {
4815 id: selection.id,
4816 start: selection.start.summary::<D>(&buffer),
4817 end: selection.end.summary::<D>(&buffer),
4818 reversed: selection.reversed,
4819 goal: selection.goal,
4820 }
4821 }
4822
4823 fn selection_count<'a>(&self) -> usize {
4824 let mut count = self.selections.len();
4825 if self.pending_selection.is_some() {
4826 count += 1;
4827 }
4828 count
4829 }
4830
4831 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4832 &self,
4833 cx: &AppContext,
4834 ) -> Selection<D> {
4835 let snapshot = self.buffer.read(cx).read(cx);
4836 self.selections
4837 .iter()
4838 .min_by_key(|s| s.id)
4839 .map(|selection| self.resolve_selection(selection, &snapshot))
4840 .or_else(|| self.pending_selection(&snapshot))
4841 .unwrap()
4842 }
4843
4844 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4845 &self,
4846 cx: &AppContext,
4847 ) -> Selection<D> {
4848 self.resolve_selection(
4849 self.newest_anchor_selection(),
4850 &self.buffer.read(cx).read(cx),
4851 )
4852 }
4853
4854 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4855 &self,
4856 snapshot: &MultiBufferSnapshot,
4857 ) -> Selection<D> {
4858 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4859 }
4860
4861 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4862 self.pending_selection
4863 .as_ref()
4864 .map(|s| &s.selection)
4865 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4866 .unwrap()
4867 }
4868
4869 pub fn update_selections<T>(
4870 &mut self,
4871 mut selections: Vec<Selection<T>>,
4872 autoscroll: Option<Autoscroll>,
4873 cx: &mut ViewContext<Self>,
4874 ) where
4875 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4876 {
4877 let buffer = self.buffer.read(cx).snapshot(cx);
4878 selections.sort_unstable_by_key(|s| s.start);
4879
4880 // Merge overlapping selections.
4881 let mut i = 1;
4882 while i < selections.len() {
4883 if selections[i - 1].end >= selections[i].start {
4884 let removed = selections.remove(i);
4885 if removed.start < selections[i - 1].start {
4886 selections[i - 1].start = removed.start;
4887 }
4888 if removed.end > selections[i - 1].end {
4889 selections[i - 1].end = removed.end;
4890 }
4891 } else {
4892 i += 1;
4893 }
4894 }
4895
4896 if let Some(autoscroll) = autoscroll {
4897 self.request_autoscroll(autoscroll, cx);
4898 }
4899
4900 self.set_selections(
4901 Arc::from_iter(selections.into_iter().map(|selection| {
4902 let end_bias = if selection.end > selection.start {
4903 Bias::Left
4904 } else {
4905 Bias::Right
4906 };
4907 Selection {
4908 id: selection.id,
4909 start: buffer.anchor_after(selection.start),
4910 end: buffer.anchor_at(selection.end, end_bias),
4911 reversed: selection.reversed,
4912 goal: selection.goal,
4913 }
4914 })),
4915 None,
4916 true,
4917 cx,
4918 );
4919 }
4920
4921 pub fn set_selections_from_remote(
4922 &mut self,
4923 mut selections: Vec<Selection<Anchor>>,
4924 cx: &mut ViewContext<Self>,
4925 ) {
4926 let buffer = self.buffer.read(cx);
4927 let buffer = buffer.read(cx);
4928 selections.sort_by(|a, b| {
4929 a.start
4930 .cmp(&b.start, &*buffer)
4931 .unwrap()
4932 .then_with(|| b.end.cmp(&a.end, &*buffer).unwrap())
4933 });
4934
4935 // Merge overlapping selections
4936 let mut i = 1;
4937 while i < selections.len() {
4938 if selections[i - 1]
4939 .end
4940 .cmp(&selections[i].start, &*buffer)
4941 .unwrap()
4942 .is_ge()
4943 {
4944 let removed = selections.remove(i);
4945 if removed
4946 .start
4947 .cmp(&selections[i - 1].start, &*buffer)
4948 .unwrap()
4949 .is_lt()
4950 {
4951 selections[i - 1].start = removed.start;
4952 }
4953 if removed
4954 .end
4955 .cmp(&selections[i - 1].end, &*buffer)
4956 .unwrap()
4957 .is_gt()
4958 {
4959 selections[i - 1].end = removed.end;
4960 }
4961 } else {
4962 i += 1;
4963 }
4964 }
4965
4966 drop(buffer);
4967 self.set_selections(selections.into(), None, false, cx);
4968 }
4969
4970 /// Compute new ranges for any selections that were located in excerpts that have
4971 /// since been removed.
4972 ///
4973 /// Returns a `HashMap` indicating which selections whose former head position
4974 /// was no longer present. The keys of the map are selection ids. The values are
4975 /// the id of the new excerpt where the head of the selection has been moved.
4976 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4977 let snapshot = self.buffer.read(cx).read(cx);
4978 let mut selections_with_lost_position = HashMap::default();
4979
4980 let mut pending_selection = self.pending_selection.take();
4981 if let Some(pending) = pending_selection.as_mut() {
4982 let anchors =
4983 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
4984 let (_, start, kept_start) = anchors[0].clone();
4985 let (_, end, kept_end) = anchors[1].clone();
4986 let kept_head = if pending.selection.reversed {
4987 kept_start
4988 } else {
4989 kept_end
4990 };
4991 if !kept_head {
4992 selections_with_lost_position.insert(
4993 pending.selection.id,
4994 pending.selection.head().excerpt_id.clone(),
4995 );
4996 }
4997
4998 pending.selection.start = start;
4999 pending.selection.end = end;
5000 }
5001
5002 let anchors_with_status = snapshot.refresh_anchors(
5003 self.selections
5004 .iter()
5005 .flat_map(|selection| [&selection.start, &selection.end]),
5006 );
5007 self.selections = anchors_with_status
5008 .chunks(2)
5009 .map(|selection_anchors| {
5010 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5011 let (_, end, kept_end) = selection_anchors[1].clone();
5012 let selection = &self.selections[anchor_ix / 2];
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,
5026 end,
5027 reversed: selection.reversed,
5028 goal: selection.goal,
5029 }
5030 })
5031 .collect();
5032 drop(snapshot);
5033
5034 let new_selections = self.local_selections::<usize>(cx);
5035 if !new_selections.is_empty() {
5036 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5037 }
5038 self.pending_selection = pending_selection;
5039
5040 selections_with_lost_position
5041 }
5042
5043 fn set_selections(
5044 &mut self,
5045 selections: Arc<[Selection<Anchor>]>,
5046 pending_selection: Option<PendingSelection>,
5047 local: bool,
5048 cx: &mut ViewContext<Self>,
5049 ) {
5050 assert!(
5051 !selections.is_empty() || pending_selection.is_some(),
5052 "must have at least one selection"
5053 );
5054
5055 let old_cursor_position = self.newest_anchor_selection().head();
5056
5057 self.selections = selections;
5058 self.pending_selection = pending_selection;
5059 if self.focused && self.leader_replica_id.is_none() {
5060 self.buffer.update(cx, |buffer, cx| {
5061 buffer.set_active_selections(&self.selections, cx)
5062 });
5063 }
5064
5065 let display_map = self
5066 .display_map
5067 .update(cx, |display_map, cx| display_map.snapshot(cx));
5068 let buffer = &display_map.buffer_snapshot;
5069 self.add_selections_state = None;
5070 self.select_next_state = None;
5071 self.select_larger_syntax_node_stack.clear();
5072 self.autoclose_stack.invalidate(&self.selections, &buffer);
5073 self.snippet_stack.invalidate(&self.selections, &buffer);
5074 self.invalidate_rename_range(&buffer, cx);
5075
5076 let new_cursor_position = self.newest_anchor_selection().head();
5077
5078 self.push_to_nav_history(
5079 old_cursor_position.clone(),
5080 Some(new_cursor_position.to_point(&buffer)),
5081 cx,
5082 );
5083
5084 if local {
5085 let completion_menu = match self.context_menu.as_mut() {
5086 Some(ContextMenu::Completions(menu)) => Some(menu),
5087 _ => {
5088 self.context_menu.take();
5089 None
5090 }
5091 };
5092
5093 if let Some(completion_menu) = completion_menu {
5094 let cursor_position = new_cursor_position.to_offset(&buffer);
5095 let (word_range, kind) =
5096 buffer.surrounding_word(completion_menu.initial_position.clone());
5097 if kind == Some(CharKind::Word)
5098 && word_range.to_inclusive().contains(&cursor_position)
5099 {
5100 let query = Self::completion_query(&buffer, cursor_position);
5101 cx.background()
5102 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5103 self.show_completions(&ShowCompletions, cx);
5104 } else {
5105 self.hide_context_menu(cx);
5106 }
5107 }
5108
5109 if old_cursor_position.to_display_point(&display_map).row()
5110 != new_cursor_position.to_display_point(&display_map).row()
5111 {
5112 self.available_code_actions.take();
5113 }
5114 self.refresh_code_actions(cx);
5115 self.refresh_document_highlights(cx);
5116 }
5117
5118 self.pause_cursor_blinking(cx);
5119 cx.emit(Event::SelectionsChanged { local });
5120 }
5121
5122 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5123 self.autoscroll_request = Some((autoscroll, true));
5124 cx.notify();
5125 }
5126
5127 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5128 self.autoscroll_request = Some((autoscroll, false));
5129 cx.notify();
5130 }
5131
5132 pub fn transact(
5133 &mut self,
5134 cx: &mut ViewContext<Self>,
5135 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5136 ) {
5137 self.start_transaction(cx);
5138 update(self, cx);
5139 self.end_transaction(cx);
5140 }
5141
5142 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5143 self.start_transaction_at(Instant::now(), cx);
5144 }
5145
5146 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5147 self.end_selection(cx);
5148 if let Some(tx_id) = self
5149 .buffer
5150 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5151 {
5152 self.selection_history
5153 .insert(tx_id, (self.selections.clone(), None));
5154 }
5155 }
5156
5157 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5158 self.end_transaction_at(Instant::now(), cx);
5159 }
5160
5161 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5162 if let Some(tx_id) = self
5163 .buffer
5164 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5165 {
5166 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5167 *end_selections = Some(self.selections.clone());
5168 } else {
5169 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5170 }
5171 }
5172 }
5173
5174 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5175 log::info!("Editor::page_up");
5176 }
5177
5178 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5179 log::info!("Editor::page_down");
5180 }
5181
5182 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5183 let mut fold_ranges = Vec::new();
5184
5185 let selections = self.local_selections::<Point>(cx);
5186 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5187 for selection in selections {
5188 let range = selection.display_range(&display_map).sorted();
5189 let buffer_start_row = range.start.to_point(&display_map).row;
5190
5191 for row in (0..=range.end.row()).rev() {
5192 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5193 let fold_range = self.foldable_range_for_line(&display_map, row);
5194 if fold_range.end.row >= buffer_start_row {
5195 fold_ranges.push(fold_range);
5196 if row <= range.start.row() {
5197 break;
5198 }
5199 }
5200 }
5201 }
5202 }
5203
5204 self.fold_ranges(fold_ranges, cx);
5205 }
5206
5207 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5208 let selections = self.local_selections::<Point>(cx);
5209 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5210 let buffer = &display_map.buffer_snapshot;
5211 let ranges = selections
5212 .iter()
5213 .map(|s| {
5214 let range = s.display_range(&display_map).sorted();
5215 let mut start = range.start.to_point(&display_map);
5216 let mut end = range.end.to_point(&display_map);
5217 start.column = 0;
5218 end.column = buffer.line_len(end.row);
5219 start..end
5220 })
5221 .collect::<Vec<_>>();
5222 self.unfold_ranges(ranges, cx);
5223 }
5224
5225 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5226 let max_point = display_map.max_point();
5227 if display_row >= max_point.row() {
5228 false
5229 } else {
5230 let (start_indent, is_blank) = display_map.line_indent(display_row);
5231 if is_blank {
5232 false
5233 } else {
5234 for display_row in display_row + 1..=max_point.row() {
5235 let (indent, is_blank) = display_map.line_indent(display_row);
5236 if !is_blank {
5237 return indent > start_indent;
5238 }
5239 }
5240 false
5241 }
5242 }
5243 }
5244
5245 fn foldable_range_for_line(
5246 &self,
5247 display_map: &DisplaySnapshot,
5248 start_row: u32,
5249 ) -> Range<Point> {
5250 let max_point = display_map.max_point();
5251
5252 let (start_indent, _) = display_map.line_indent(start_row);
5253 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5254 let mut end = None;
5255 for row in start_row + 1..=max_point.row() {
5256 let (indent, is_blank) = display_map.line_indent(row);
5257 if !is_blank && indent <= start_indent {
5258 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5259 break;
5260 }
5261 }
5262
5263 let end = end.unwrap_or(max_point);
5264 return start.to_point(display_map)..end.to_point(display_map);
5265 }
5266
5267 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5268 let selections = self.local_selections::<Point>(cx);
5269 let ranges = selections.into_iter().map(|s| s.start..s.end);
5270 self.fold_ranges(ranges, cx);
5271 }
5272
5273 fn fold_ranges<T: ToOffset>(
5274 &mut self,
5275 ranges: impl IntoIterator<Item = Range<T>>,
5276 cx: &mut ViewContext<Self>,
5277 ) {
5278 let mut ranges = ranges.into_iter().peekable();
5279 if ranges.peek().is_some() {
5280 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5281 self.request_autoscroll(Autoscroll::Fit, cx);
5282 cx.notify();
5283 }
5284 }
5285
5286 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5287 if !ranges.is_empty() {
5288 self.display_map
5289 .update(cx, |map, cx| map.unfold(ranges, cx));
5290 self.request_autoscroll(Autoscroll::Fit, cx);
5291 cx.notify();
5292 }
5293 }
5294
5295 pub fn insert_blocks(
5296 &mut self,
5297 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5298 cx: &mut ViewContext<Self>,
5299 ) -> Vec<BlockId> {
5300 let blocks = self
5301 .display_map
5302 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5303 self.request_autoscroll(Autoscroll::Fit, cx);
5304 blocks
5305 }
5306
5307 pub fn replace_blocks(
5308 &mut self,
5309 blocks: HashMap<BlockId, RenderBlock>,
5310 cx: &mut ViewContext<Self>,
5311 ) {
5312 self.display_map
5313 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5314 self.request_autoscroll(Autoscroll::Fit, cx);
5315 }
5316
5317 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5318 self.display_map.update(cx, |display_map, cx| {
5319 display_map.remove_blocks(block_ids, cx)
5320 });
5321 }
5322
5323 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5324 self.display_map
5325 .update(cx, |map, cx| map.snapshot(cx))
5326 .longest_row()
5327 }
5328
5329 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5330 self.display_map
5331 .update(cx, |map, cx| map.snapshot(cx))
5332 .max_point()
5333 }
5334
5335 pub fn text(&self, cx: &AppContext) -> String {
5336 self.buffer.read(cx).read(cx).text()
5337 }
5338
5339 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5340 self.buffer
5341 .read(cx)
5342 .as_singleton()
5343 .expect("you can only call set_text on editors for singleton buffers")
5344 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5345 }
5346
5347 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5348 self.display_map
5349 .update(cx, |map, cx| map.snapshot(cx))
5350 .text()
5351 }
5352
5353 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5354 let language = self.language(cx);
5355 let settings = cx.global::<Settings>();
5356 let mode = self
5357 .soft_wrap_mode_override
5358 .unwrap_or_else(|| settings.soft_wrap(language));
5359 match mode {
5360 settings::SoftWrap::None => SoftWrap::None,
5361 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5362 settings::SoftWrap::PreferredLineLength => {
5363 SoftWrap::Column(settings.preferred_line_length(language))
5364 }
5365 }
5366 }
5367
5368 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5369 self.soft_wrap_mode_override = Some(mode);
5370 cx.notify();
5371 }
5372
5373 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5374 self.display_map
5375 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5376 }
5377
5378 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5379 self.highlighted_rows = rows;
5380 }
5381
5382 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5383 self.highlighted_rows.clone()
5384 }
5385
5386 pub fn highlight_background<T: 'static>(
5387 &mut self,
5388 ranges: Vec<Range<Anchor>>,
5389 color: Color,
5390 cx: &mut ViewContext<Self>,
5391 ) {
5392 self.background_highlights
5393 .insert(TypeId::of::<T>(), (color, ranges));
5394 cx.notify();
5395 }
5396
5397 pub fn clear_background_highlights<T: 'static>(
5398 &mut self,
5399 cx: &mut ViewContext<Self>,
5400 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5401 cx.notify();
5402 self.background_highlights.remove(&TypeId::of::<T>())
5403 }
5404
5405 #[cfg(feature = "test-support")]
5406 pub fn all_background_highlights(
5407 &mut self,
5408 cx: &mut ViewContext<Self>,
5409 ) -> Vec<(Range<DisplayPoint>, Color)> {
5410 let snapshot = self.snapshot(cx);
5411 let buffer = &snapshot.buffer_snapshot;
5412 let start = buffer.anchor_before(0);
5413 let end = buffer.anchor_after(buffer.len());
5414 self.background_highlights_in_range(start..end, &snapshot)
5415 }
5416
5417 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5418 self.background_highlights
5419 .get(&TypeId::of::<T>())
5420 .map(|(color, ranges)| (*color, ranges.as_slice()))
5421 }
5422
5423 pub fn background_highlights_in_range(
5424 &self,
5425 search_range: Range<Anchor>,
5426 display_snapshot: &DisplaySnapshot,
5427 ) -> Vec<(Range<DisplayPoint>, Color)> {
5428 let mut results = Vec::new();
5429 let buffer = &display_snapshot.buffer_snapshot;
5430 for (color, ranges) in self.background_highlights.values() {
5431 let start_ix = match ranges.binary_search_by(|probe| {
5432 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5433 if cmp.is_gt() {
5434 Ordering::Greater
5435 } else {
5436 Ordering::Less
5437 }
5438 }) {
5439 Ok(i) | Err(i) => i,
5440 };
5441 for range in &ranges[start_ix..] {
5442 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5443 break;
5444 }
5445 let start = range
5446 .start
5447 .to_point(buffer)
5448 .to_display_point(display_snapshot);
5449 let end = range
5450 .end
5451 .to_point(buffer)
5452 .to_display_point(display_snapshot);
5453 results.push((start..end, *color))
5454 }
5455 }
5456 results
5457 }
5458
5459 pub fn highlight_text<T: 'static>(
5460 &mut self,
5461 ranges: Vec<Range<Anchor>>,
5462 style: HighlightStyle,
5463 cx: &mut ViewContext<Self>,
5464 ) {
5465 self.display_map.update(cx, |map, _| {
5466 map.highlight_text(TypeId::of::<T>(), ranges, style)
5467 });
5468 cx.notify();
5469 }
5470
5471 pub fn clear_text_highlights<T: 'static>(
5472 &mut self,
5473 cx: &mut ViewContext<Self>,
5474 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5475 cx.notify();
5476 self.display_map
5477 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5478 }
5479
5480 fn next_blink_epoch(&mut self) -> usize {
5481 self.blink_epoch += 1;
5482 self.blink_epoch
5483 }
5484
5485 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5486 if !self.focused {
5487 return;
5488 }
5489
5490 self.show_local_cursors = true;
5491 cx.notify();
5492
5493 let epoch = self.next_blink_epoch();
5494 cx.spawn(|this, mut cx| {
5495 let this = this.downgrade();
5496 async move {
5497 Timer::after(CURSOR_BLINK_INTERVAL).await;
5498 if let Some(this) = this.upgrade(&cx) {
5499 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5500 }
5501 }
5502 })
5503 .detach();
5504 }
5505
5506 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5507 if epoch == self.blink_epoch {
5508 self.blinking_paused = false;
5509 self.blink_cursors(epoch, cx);
5510 }
5511 }
5512
5513 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5514 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5515 self.show_local_cursors = !self.show_local_cursors;
5516 cx.notify();
5517
5518 let epoch = self.next_blink_epoch();
5519 cx.spawn(|this, mut cx| {
5520 let this = this.downgrade();
5521 async move {
5522 Timer::after(CURSOR_BLINK_INTERVAL).await;
5523 if let Some(this) = this.upgrade(&cx) {
5524 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5525 }
5526 }
5527 })
5528 .detach();
5529 }
5530 }
5531
5532 pub fn show_local_cursors(&self) -> bool {
5533 self.show_local_cursors && self.focused
5534 }
5535
5536 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5537 cx.notify();
5538 }
5539
5540 fn on_buffer_event(
5541 &mut self,
5542 _: ModelHandle<MultiBuffer>,
5543 event: &language::Event,
5544 cx: &mut ViewContext<Self>,
5545 ) {
5546 match event {
5547 language::Event::Edited { local } => {
5548 self.refresh_active_diagnostics(cx);
5549 self.refresh_code_actions(cx);
5550 cx.emit(Event::Edited { local: *local });
5551 }
5552 language::Event::Dirtied => cx.emit(Event::Dirtied),
5553 language::Event::Saved => cx.emit(Event::Saved),
5554 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5555 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5556 language::Event::Closed => cx.emit(Event::Closed),
5557 language::Event::DiagnosticsUpdated => {
5558 self.refresh_active_diagnostics(cx);
5559 }
5560 _ => {}
5561 }
5562 }
5563
5564 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5565 cx.notify();
5566 }
5567
5568 pub fn set_searchable(&mut self, searchable: bool) {
5569 self.searchable = searchable;
5570 }
5571
5572 pub fn searchable(&self) -> bool {
5573 self.searchable
5574 }
5575
5576 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5577 let active_item = workspace.active_item(cx);
5578 let editor_handle = if let Some(editor) = active_item
5579 .as_ref()
5580 .and_then(|item| item.act_as::<Self>(cx))
5581 {
5582 editor
5583 } else {
5584 cx.propagate_action();
5585 return;
5586 };
5587
5588 let editor = editor_handle.read(cx);
5589 let buffer = editor.buffer.read(cx);
5590 if buffer.is_singleton() {
5591 cx.propagate_action();
5592 return;
5593 }
5594
5595 let mut new_selections_by_buffer = HashMap::default();
5596 for selection in editor.local_selections::<usize>(cx) {
5597 for (buffer, mut range) in
5598 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5599 {
5600 if selection.reversed {
5601 mem::swap(&mut range.start, &mut range.end);
5602 }
5603 new_selections_by_buffer
5604 .entry(buffer)
5605 .or_insert(Vec::new())
5606 .push(range)
5607 }
5608 }
5609
5610 editor_handle.update(cx, |editor, cx| {
5611 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5612 });
5613 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5614 nav_history.borrow_mut().disable();
5615
5616 // We defer the pane interaction because we ourselves are a workspace item
5617 // and activating a new item causes the pane to call a method on us reentrantly,
5618 // which panics if we're on the stack.
5619 cx.defer(move |workspace, cx| {
5620 workspace.activate_next_pane(cx);
5621
5622 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5623 let editor = workspace.open_project_item::<Self>(buffer, cx);
5624 editor.update(cx, |editor, cx| {
5625 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5626 });
5627 }
5628
5629 nav_history.borrow_mut().enable();
5630 });
5631 }
5632}
5633
5634impl EditorSnapshot {
5635 pub fn is_focused(&self) -> bool {
5636 self.is_focused
5637 }
5638
5639 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5640 self.placeholder_text.as_ref()
5641 }
5642
5643 pub fn scroll_position(&self) -> Vector2F {
5644 compute_scroll_position(
5645 &self.display_snapshot,
5646 self.scroll_position,
5647 &self.scroll_top_anchor,
5648 )
5649 }
5650}
5651
5652impl Deref for EditorSnapshot {
5653 type Target = DisplaySnapshot;
5654
5655 fn deref(&self) -> &Self::Target {
5656 &self.display_snapshot
5657 }
5658}
5659
5660fn compute_scroll_position(
5661 snapshot: &DisplaySnapshot,
5662 mut scroll_position: Vector2F,
5663 scroll_top_anchor: &Anchor,
5664) -> Vector2F {
5665 if *scroll_top_anchor != Anchor::min() {
5666 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5667 scroll_position.set_y(scroll_top + scroll_position.y());
5668 } else {
5669 scroll_position.set_y(0.);
5670 }
5671 scroll_position
5672}
5673
5674#[derive(Copy, Clone)]
5675pub enum Event {
5676 Activate,
5677 Edited { local: bool },
5678 Blurred,
5679 Dirtied,
5680 Saved,
5681 TitleChanged,
5682 SelectionsChanged { local: bool },
5683 ScrollPositionChanged { local: bool },
5684 Closed,
5685}
5686
5687pub struct EditorFocused(pub ViewHandle<Editor>);
5688pub struct EditorBlurred(pub ViewHandle<Editor>);
5689pub struct EditorReleased(pub WeakViewHandle<Editor>);
5690
5691impl Entity for Editor {
5692 type Event = Event;
5693
5694 fn release(&mut self, cx: &mut MutableAppContext) {
5695 cx.emit_global(EditorReleased(self.handle.clone()));
5696 }
5697}
5698
5699impl View for Editor {
5700 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5701 let style = self.style(cx);
5702 self.display_map.update(cx, |map, cx| {
5703 map.set_font(style.text.font_id, style.text.font_size, cx)
5704 });
5705 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5706 }
5707
5708 fn ui_name() -> &'static str {
5709 "Editor"
5710 }
5711
5712 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5713 let focused_event = EditorFocused(cx.handle());
5714 cx.emit_global(focused_event);
5715 if let Some(rename) = self.pending_rename.as_ref() {
5716 cx.focus(&rename.editor);
5717 } else {
5718 self.focused = true;
5719 self.blink_cursors(self.blink_epoch, cx);
5720 self.buffer.update(cx, |buffer, cx| {
5721 buffer.finalize_last_transaction(cx);
5722 if self.leader_replica_id.is_none() {
5723 buffer.set_active_selections(&self.selections, cx);
5724 }
5725 });
5726 }
5727 }
5728
5729 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5730 let blurred_event = EditorBlurred(cx.handle());
5731 cx.emit_global(blurred_event);
5732 self.focused = false;
5733 self.buffer
5734 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5735 self.hide_context_menu(cx);
5736 cx.emit(Event::Blurred);
5737 cx.notify();
5738 }
5739
5740 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5741 let mut cx = Self::default_keymap_context();
5742 let mode = match self.mode {
5743 EditorMode::SingleLine => "single_line",
5744 EditorMode::AutoHeight { .. } => "auto_height",
5745 EditorMode::Full => "full",
5746 };
5747 cx.map.insert("mode".into(), mode.into());
5748 if self.pending_rename.is_some() {
5749 cx.set.insert("renaming".into());
5750 }
5751 match self.context_menu.as_ref() {
5752 Some(ContextMenu::Completions(_)) => {
5753 cx.set.insert("showing_completions".into());
5754 }
5755 Some(ContextMenu::CodeActions(_)) => {
5756 cx.set.insert("showing_code_actions".into());
5757 }
5758 None => {}
5759 }
5760 cx
5761 }
5762}
5763
5764fn build_style(
5765 settings: &Settings,
5766 get_field_editor_theme: Option<GetFieldEditorTheme>,
5767 override_text_style: Option<&OverrideTextStyle>,
5768 cx: &AppContext,
5769) -> EditorStyle {
5770 let font_cache = cx.font_cache();
5771
5772 let mut theme = settings.theme.editor.clone();
5773 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5774 let field_editor_theme = get_field_editor_theme(&settings.theme);
5775 theme.text_color = field_editor_theme.text.color;
5776 theme.selection = field_editor_theme.selection;
5777 theme.background = field_editor_theme
5778 .container
5779 .background_color
5780 .unwrap_or_default();
5781 EditorStyle {
5782 text: field_editor_theme.text,
5783 placeholder_text: field_editor_theme.placeholder_text,
5784 theme,
5785 }
5786 } else {
5787 let font_family_id = settings.buffer_font_family;
5788 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5789 let font_properties = Default::default();
5790 let font_id = font_cache
5791 .select_font(font_family_id, &font_properties)
5792 .unwrap();
5793 let font_size = settings.buffer_font_size;
5794 EditorStyle {
5795 text: TextStyle {
5796 color: settings.theme.editor.text_color,
5797 font_family_name,
5798 font_family_id,
5799 font_id,
5800 font_size,
5801 font_properties,
5802 underline: Default::default(),
5803 },
5804 placeholder_text: None,
5805 theme,
5806 }
5807 };
5808
5809 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5810 if let Some(highlighted) = style
5811 .text
5812 .clone()
5813 .highlight(highlight_style, font_cache)
5814 .log_err()
5815 {
5816 style.text = highlighted;
5817 }
5818 }
5819
5820 style
5821}
5822
5823trait SelectionExt {
5824 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5825 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5826 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5827 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5828 -> Range<u32>;
5829}
5830
5831impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5832 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5833 let start = self.start.to_point(buffer);
5834 let end = self.end.to_point(buffer);
5835 if self.reversed {
5836 end..start
5837 } else {
5838 start..end
5839 }
5840 }
5841
5842 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5843 let start = self.start.to_offset(buffer);
5844 let end = self.end.to_offset(buffer);
5845 if self.reversed {
5846 end..start
5847 } else {
5848 start..end
5849 }
5850 }
5851
5852 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5853 let start = self
5854 .start
5855 .to_point(&map.buffer_snapshot)
5856 .to_display_point(map);
5857 let end = self
5858 .end
5859 .to_point(&map.buffer_snapshot)
5860 .to_display_point(map);
5861 if self.reversed {
5862 end..start
5863 } else {
5864 start..end
5865 }
5866 }
5867
5868 fn spanned_rows(
5869 &self,
5870 include_end_if_at_line_start: bool,
5871 map: &DisplaySnapshot,
5872 ) -> Range<u32> {
5873 let start = self.start.to_point(&map.buffer_snapshot);
5874 let mut end = self.end.to_point(&map.buffer_snapshot);
5875 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5876 end.row -= 1;
5877 }
5878
5879 let buffer_start = map.prev_line_boundary(start).0;
5880 let buffer_end = map.next_line_boundary(end).0;
5881 buffer_start.row..buffer_end.row + 1
5882 }
5883}
5884
5885impl<T: InvalidationRegion> InvalidationStack<T> {
5886 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5887 where
5888 S: Clone + ToOffset,
5889 {
5890 while let Some(region) = self.last() {
5891 let all_selections_inside_invalidation_ranges =
5892 if selections.len() == region.ranges().len() {
5893 selections
5894 .iter()
5895 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5896 .all(|(selection, invalidation_range)| {
5897 let head = selection.head().to_offset(&buffer);
5898 invalidation_range.start <= head && invalidation_range.end >= head
5899 })
5900 } else {
5901 false
5902 };
5903
5904 if all_selections_inside_invalidation_ranges {
5905 break;
5906 } else {
5907 self.pop();
5908 }
5909 }
5910 }
5911}
5912
5913impl<T> Default for InvalidationStack<T> {
5914 fn default() -> Self {
5915 Self(Default::default())
5916 }
5917}
5918
5919impl<T> Deref for InvalidationStack<T> {
5920 type Target = Vec<T>;
5921
5922 fn deref(&self) -> &Self::Target {
5923 &self.0
5924 }
5925}
5926
5927impl<T> DerefMut for InvalidationStack<T> {
5928 fn deref_mut(&mut self) -> &mut Self::Target {
5929 &mut self.0
5930 }
5931}
5932
5933impl InvalidationRegion for BracketPairState {
5934 fn ranges(&self) -> &[Range<Anchor>] {
5935 &self.ranges
5936 }
5937}
5938
5939impl InvalidationRegion for SnippetState {
5940 fn ranges(&self) -> &[Range<Anchor>] {
5941 &self.ranges[self.active_index]
5942 }
5943}
5944
5945impl Deref for EditorStyle {
5946 type Target = theme::Editor;
5947
5948 fn deref(&self) -> &Self::Target {
5949 &self.theme
5950 }
5951}
5952
5953pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5954 let mut highlighted_lines = Vec::new();
5955 for line in diagnostic.message.lines() {
5956 highlighted_lines.push(highlight_diagnostic_message(line));
5957 }
5958
5959 Arc::new(move |cx: &BlockContext| {
5960 let settings = cx.global::<Settings>();
5961 let theme = &settings.theme.editor;
5962 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5963 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5964 Flex::column()
5965 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5966 Label::new(
5967 line.clone(),
5968 style.message.clone().with_font_size(font_size),
5969 )
5970 .with_highlights(highlights.clone())
5971 .contained()
5972 .with_margin_left(cx.anchor_x)
5973 .boxed()
5974 }))
5975 .aligned()
5976 .left()
5977 .boxed()
5978 })
5979}
5980
5981pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5982 let mut message_without_backticks = String::new();
5983 let mut prev_offset = 0;
5984 let mut inside_block = false;
5985 let mut highlights = Vec::new();
5986 for (match_ix, (offset, _)) in message
5987 .match_indices('`')
5988 .chain([(message.len(), "")])
5989 .enumerate()
5990 {
5991 message_without_backticks.push_str(&message[prev_offset..offset]);
5992 if inside_block {
5993 highlights.extend(prev_offset - match_ix..offset - match_ix);
5994 }
5995
5996 inside_block = !inside_block;
5997 prev_offset = offset + 1;
5998 }
5999
6000 (message_without_backticks, highlights)
6001}
6002
6003pub fn diagnostic_style(
6004 severity: DiagnosticSeverity,
6005 valid: bool,
6006 theme: &theme::Editor,
6007) -> DiagnosticStyle {
6008 match (severity, valid) {
6009 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6010 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6011 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6012 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6013 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6014 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6015 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6016 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6017 _ => theme.invalid_hint_diagnostic.clone(),
6018 }
6019}
6020
6021pub fn combine_syntax_and_fuzzy_match_highlights(
6022 text: &str,
6023 default_style: HighlightStyle,
6024 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6025 match_indices: &[usize],
6026) -> Vec<(Range<usize>, HighlightStyle)> {
6027 let mut result = Vec::new();
6028 let mut match_indices = match_indices.iter().copied().peekable();
6029
6030 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6031 {
6032 syntax_highlight.weight = None;
6033
6034 // Add highlights for any fuzzy match characters before the next
6035 // syntax highlight range.
6036 while let Some(&match_index) = match_indices.peek() {
6037 if match_index >= range.start {
6038 break;
6039 }
6040 match_indices.next();
6041 let end_index = char_ix_after(match_index, text);
6042 let mut match_style = default_style;
6043 match_style.weight = Some(fonts::Weight::BOLD);
6044 result.push((match_index..end_index, match_style));
6045 }
6046
6047 if range.start == usize::MAX {
6048 break;
6049 }
6050
6051 // Add highlights for any fuzzy match characters within the
6052 // syntax highlight range.
6053 let mut offset = range.start;
6054 while let Some(&match_index) = match_indices.peek() {
6055 if match_index >= range.end {
6056 break;
6057 }
6058
6059 match_indices.next();
6060 if match_index > offset {
6061 result.push((offset..match_index, syntax_highlight));
6062 }
6063
6064 let mut end_index = char_ix_after(match_index, text);
6065 while let Some(&next_match_index) = match_indices.peek() {
6066 if next_match_index == end_index && next_match_index < range.end {
6067 end_index = char_ix_after(next_match_index, text);
6068 match_indices.next();
6069 } else {
6070 break;
6071 }
6072 }
6073
6074 let mut match_style = syntax_highlight;
6075 match_style.weight = Some(fonts::Weight::BOLD);
6076 result.push((match_index..end_index, match_style));
6077 offset = end_index;
6078 }
6079
6080 if offset < range.end {
6081 result.push((offset..range.end, syntax_highlight));
6082 }
6083 }
6084
6085 fn char_ix_after(ix: usize, text: &str) -> usize {
6086 ix + text[ix..].chars().next().unwrap().len_utf8()
6087 }
6088
6089 result
6090}
6091
6092pub fn styled_runs_for_code_label<'a>(
6093 label: &'a CodeLabel,
6094 syntax_theme: &'a theme::SyntaxTheme,
6095) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6096 let fade_out = HighlightStyle {
6097 fade_out: Some(0.35),
6098 ..Default::default()
6099 };
6100
6101 let mut prev_end = label.filter_range.end;
6102 label
6103 .runs
6104 .iter()
6105 .enumerate()
6106 .flat_map(move |(ix, (range, highlight_id))| {
6107 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6108 style
6109 } else {
6110 return Default::default();
6111 };
6112 let mut muted_style = style.clone();
6113 muted_style.highlight(fade_out);
6114
6115 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6116 if range.start >= label.filter_range.end {
6117 if range.start > prev_end {
6118 runs.push((prev_end..range.start, fade_out));
6119 }
6120 runs.push((range.clone(), muted_style));
6121 } else if range.end <= label.filter_range.end {
6122 runs.push((range.clone(), style));
6123 } else {
6124 runs.push((range.start..label.filter_range.end, style));
6125 runs.push((label.filter_range.end..range.end, muted_style));
6126 }
6127 prev_end = cmp::max(prev_end, range.end);
6128
6129 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6130 runs.push((prev_end..label.text.len(), fade_out));
6131 }
6132
6133 runs
6134 })
6135}
6136
6137#[cfg(test)]
6138mod tests {
6139 use crate::test::marked_text_by;
6140
6141 use super::*;
6142 use gpui::{
6143 geometry::rect::RectF,
6144 platform::{WindowBounds, WindowOptions},
6145 };
6146 use language::{LanguageConfig, LanguageServerConfig};
6147 use lsp::FakeLanguageServer;
6148 use project::FakeFs;
6149 use smol::stream::StreamExt;
6150 use std::{cell::RefCell, rc::Rc, time::Instant};
6151 use text::Point;
6152 use unindent::Unindent;
6153 use util::test::sample_text;
6154 use workspace::FollowableItem;
6155
6156 #[gpui::test]
6157 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6158 populate_settings(cx);
6159 let mut now = Instant::now();
6160 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6161 let group_interval = buffer.read(cx).transaction_group_interval();
6162 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6163 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6164
6165 editor.update(cx, |editor, cx| {
6166 editor.start_transaction_at(now, cx);
6167 editor.select_ranges([2..4], None, cx);
6168 editor.insert("cd", cx);
6169 editor.end_transaction_at(now, cx);
6170 assert_eq!(editor.text(cx), "12cd56");
6171 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6172
6173 editor.start_transaction_at(now, cx);
6174 editor.select_ranges([4..5], None, cx);
6175 editor.insert("e", cx);
6176 editor.end_transaction_at(now, cx);
6177 assert_eq!(editor.text(cx), "12cde6");
6178 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6179
6180 now += group_interval + Duration::from_millis(1);
6181 editor.select_ranges([2..2], None, cx);
6182
6183 // Simulate an edit in another editor
6184 buffer.update(cx, |buffer, cx| {
6185 buffer.start_transaction_at(now, cx);
6186 buffer.edit([0..1], "a", cx);
6187 buffer.edit([1..1], "b", cx);
6188 buffer.end_transaction_at(now, cx);
6189 });
6190
6191 assert_eq!(editor.text(cx), "ab2cde6");
6192 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6193
6194 // Last transaction happened past the group interval in a different editor.
6195 // Undo it individually and don't restore selections.
6196 editor.undo(&Undo, cx);
6197 assert_eq!(editor.text(cx), "12cde6");
6198 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6199
6200 // First two transactions happened within the group interval in this editor.
6201 // Undo them together and restore selections.
6202 editor.undo(&Undo, cx);
6203 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6204 assert_eq!(editor.text(cx), "123456");
6205 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6206
6207 // Redo the first two transactions together.
6208 editor.redo(&Redo, cx);
6209 assert_eq!(editor.text(cx), "12cde6");
6210 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6211
6212 // Redo the last transaction on its own.
6213 editor.redo(&Redo, cx);
6214 assert_eq!(editor.text(cx), "ab2cde6");
6215 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6216
6217 // Test empty transactions.
6218 editor.start_transaction_at(now, cx);
6219 editor.end_transaction_at(now, cx);
6220 editor.undo(&Undo, cx);
6221 assert_eq!(editor.text(cx), "12cde6");
6222 });
6223 }
6224
6225 #[gpui::test]
6226 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6227 populate_settings(cx);
6228
6229 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6230 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6231 editor.update(cx, |view, cx| {
6232 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6233 });
6234 assert_eq!(
6235 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6236 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6237 );
6238
6239 editor.update(cx, |view, cx| {
6240 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6241 });
6242
6243 assert_eq!(
6244 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6245 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6246 );
6247
6248 editor.update(cx, |view, cx| {
6249 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6250 });
6251
6252 assert_eq!(
6253 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6254 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6255 );
6256
6257 editor.update(cx, |view, cx| {
6258 view.end_selection(cx);
6259 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6260 });
6261
6262 assert_eq!(
6263 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6264 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6265 );
6266
6267 editor.update(cx, |view, cx| {
6268 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6269 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6270 });
6271
6272 assert_eq!(
6273 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6274 [
6275 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6276 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6277 ]
6278 );
6279
6280 editor.update(cx, |view, cx| {
6281 view.end_selection(cx);
6282 });
6283
6284 assert_eq!(
6285 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6286 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6287 );
6288 }
6289
6290 #[gpui::test]
6291 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6292 populate_settings(cx);
6293 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6294 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6295
6296 view.update(cx, |view, cx| {
6297 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6298 assert_eq!(
6299 view.selected_display_ranges(cx),
6300 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6301 );
6302 });
6303
6304 view.update(cx, |view, cx| {
6305 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6306 assert_eq!(
6307 view.selected_display_ranges(cx),
6308 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6309 );
6310 });
6311
6312 view.update(cx, |view, cx| {
6313 view.cancel(&Cancel, cx);
6314 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6315 assert_eq!(
6316 view.selected_display_ranges(cx),
6317 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6318 );
6319 });
6320 }
6321
6322 #[gpui::test]
6323 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6324 populate_settings(cx);
6325 use workspace::Item;
6326 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6327 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6328
6329 cx.add_window(Default::default(), |cx| {
6330 let mut editor = build_editor(buffer.clone(), cx);
6331 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6332
6333 // Move the cursor a small distance.
6334 // Nothing is added to the navigation history.
6335 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6336 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6337 assert!(nav_history.borrow_mut().pop_backward().is_none());
6338
6339 // Move the cursor a large distance.
6340 // The history can jump back to the previous position.
6341 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6342 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6343 editor.navigate(nav_entry.data.unwrap(), cx);
6344 assert_eq!(nav_entry.item.id(), cx.view_id());
6345 assert_eq!(
6346 editor.selected_display_ranges(cx),
6347 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6348 );
6349 assert!(nav_history.borrow_mut().pop_backward().is_none());
6350
6351 // Move the cursor a small distance via the mouse.
6352 // Nothing is added to the navigation history.
6353 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6354 editor.end_selection(cx);
6355 assert_eq!(
6356 editor.selected_display_ranges(cx),
6357 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6358 );
6359 assert!(nav_history.borrow_mut().pop_backward().is_none());
6360
6361 // Move the cursor a large distance via the mouse.
6362 // The history can jump back to the previous position.
6363 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6364 editor.end_selection(cx);
6365 assert_eq!(
6366 editor.selected_display_ranges(cx),
6367 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6368 );
6369 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6370 editor.navigate(nav_entry.data.unwrap(), cx);
6371 assert_eq!(nav_entry.item.id(), cx.view_id());
6372 assert_eq!(
6373 editor.selected_display_ranges(cx),
6374 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6375 );
6376 assert!(nav_history.borrow_mut().pop_backward().is_none());
6377
6378 editor
6379 });
6380 }
6381
6382 #[gpui::test]
6383 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6384 populate_settings(cx);
6385 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6386 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6387
6388 view.update(cx, |view, cx| {
6389 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6390 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6391 view.end_selection(cx);
6392
6393 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6394 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6395 view.end_selection(cx);
6396 assert_eq!(
6397 view.selected_display_ranges(cx),
6398 [
6399 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6400 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6401 ]
6402 );
6403 });
6404
6405 view.update(cx, |view, cx| {
6406 view.cancel(&Cancel, cx);
6407 assert_eq!(
6408 view.selected_display_ranges(cx),
6409 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6410 );
6411 });
6412
6413 view.update(cx, |view, cx| {
6414 view.cancel(&Cancel, cx);
6415 assert_eq!(
6416 view.selected_display_ranges(cx),
6417 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6418 );
6419 });
6420 }
6421
6422 #[gpui::test]
6423 fn test_fold(cx: &mut gpui::MutableAppContext) {
6424 populate_settings(cx);
6425 let buffer = MultiBuffer::build_simple(
6426 &"
6427 impl Foo {
6428 // Hello!
6429
6430 fn a() {
6431 1
6432 }
6433
6434 fn b() {
6435 2
6436 }
6437
6438 fn c() {
6439 3
6440 }
6441 }
6442 "
6443 .unindent(),
6444 cx,
6445 );
6446 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6447
6448 view.update(cx, |view, cx| {
6449 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6450 view.fold(&Fold, cx);
6451 assert_eq!(
6452 view.display_text(cx),
6453 "
6454 impl Foo {
6455 // Hello!
6456
6457 fn a() {
6458 1
6459 }
6460
6461 fn b() {…
6462 }
6463
6464 fn c() {…
6465 }
6466 }
6467 "
6468 .unindent(),
6469 );
6470
6471 view.fold(&Fold, cx);
6472 assert_eq!(
6473 view.display_text(cx),
6474 "
6475 impl Foo {…
6476 }
6477 "
6478 .unindent(),
6479 );
6480
6481 view.unfold(&Unfold, cx);
6482 assert_eq!(
6483 view.display_text(cx),
6484 "
6485 impl Foo {
6486 // Hello!
6487
6488 fn a() {
6489 1
6490 }
6491
6492 fn b() {…
6493 }
6494
6495 fn c() {…
6496 }
6497 }
6498 "
6499 .unindent(),
6500 );
6501
6502 view.unfold(&Unfold, cx);
6503 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6504 });
6505 }
6506
6507 #[gpui::test]
6508 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6509 populate_settings(cx);
6510 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6511 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6512
6513 buffer.update(cx, |buffer, cx| {
6514 buffer.edit(
6515 vec![
6516 Point::new(1, 0)..Point::new(1, 0),
6517 Point::new(1, 1)..Point::new(1, 1),
6518 ],
6519 "\t",
6520 cx,
6521 );
6522 });
6523
6524 view.update(cx, |view, cx| {
6525 assert_eq!(
6526 view.selected_display_ranges(cx),
6527 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6528 );
6529
6530 view.move_down(&MoveDown, cx);
6531 assert_eq!(
6532 view.selected_display_ranges(cx),
6533 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6534 );
6535
6536 view.move_right(&MoveRight, cx);
6537 assert_eq!(
6538 view.selected_display_ranges(cx),
6539 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6540 );
6541
6542 view.move_left(&MoveLeft, cx);
6543 assert_eq!(
6544 view.selected_display_ranges(cx),
6545 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6546 );
6547
6548 view.move_up(&MoveUp, cx);
6549 assert_eq!(
6550 view.selected_display_ranges(cx),
6551 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6552 );
6553
6554 view.move_to_end(&MoveToEnd, cx);
6555 assert_eq!(
6556 view.selected_display_ranges(cx),
6557 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6558 );
6559
6560 view.move_to_beginning(&MoveToBeginning, cx);
6561 assert_eq!(
6562 view.selected_display_ranges(cx),
6563 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6564 );
6565
6566 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6567 view.select_to_beginning(&SelectToBeginning, cx);
6568 assert_eq!(
6569 view.selected_display_ranges(cx),
6570 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6571 );
6572
6573 view.select_to_end(&SelectToEnd, cx);
6574 assert_eq!(
6575 view.selected_display_ranges(cx),
6576 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6577 );
6578 });
6579 }
6580
6581 #[gpui::test]
6582 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6583 populate_settings(cx);
6584 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6585 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6586
6587 assert_eq!('ⓐ'.len_utf8(), 3);
6588 assert_eq!('α'.len_utf8(), 2);
6589
6590 view.update(cx, |view, cx| {
6591 view.fold_ranges(
6592 vec![
6593 Point::new(0, 6)..Point::new(0, 12),
6594 Point::new(1, 2)..Point::new(1, 4),
6595 Point::new(2, 4)..Point::new(2, 8),
6596 ],
6597 cx,
6598 );
6599 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6600
6601 view.move_right(&MoveRight, cx);
6602 assert_eq!(
6603 view.selected_display_ranges(cx),
6604 &[empty_range(0, "ⓐ".len())]
6605 );
6606 view.move_right(&MoveRight, cx);
6607 assert_eq!(
6608 view.selected_display_ranges(cx),
6609 &[empty_range(0, "ⓐⓑ".len())]
6610 );
6611 view.move_right(&MoveRight, cx);
6612 assert_eq!(
6613 view.selected_display_ranges(cx),
6614 &[empty_range(0, "ⓐⓑ…".len())]
6615 );
6616
6617 view.move_down(&MoveDown, cx);
6618 assert_eq!(
6619 view.selected_display_ranges(cx),
6620 &[empty_range(1, "ab…".len())]
6621 );
6622 view.move_left(&MoveLeft, cx);
6623 assert_eq!(
6624 view.selected_display_ranges(cx),
6625 &[empty_range(1, "ab".len())]
6626 );
6627 view.move_left(&MoveLeft, cx);
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 &[empty_range(1, "a".len())]
6631 );
6632
6633 view.move_down(&MoveDown, cx);
6634 assert_eq!(
6635 view.selected_display_ranges(cx),
6636 &[empty_range(2, "α".len())]
6637 );
6638 view.move_right(&MoveRight, cx);
6639 assert_eq!(
6640 view.selected_display_ranges(cx),
6641 &[empty_range(2, "αβ".len())]
6642 );
6643 view.move_right(&MoveRight, cx);
6644 assert_eq!(
6645 view.selected_display_ranges(cx),
6646 &[empty_range(2, "αβ…".len())]
6647 );
6648 view.move_right(&MoveRight, cx);
6649 assert_eq!(
6650 view.selected_display_ranges(cx),
6651 &[empty_range(2, "αβ…ε".len())]
6652 );
6653
6654 view.move_up(&MoveUp, cx);
6655 assert_eq!(
6656 view.selected_display_ranges(cx),
6657 &[empty_range(1, "ab…e".len())]
6658 );
6659 view.move_up(&MoveUp, cx);
6660 assert_eq!(
6661 view.selected_display_ranges(cx),
6662 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6663 );
6664 view.move_left(&MoveLeft, cx);
6665 assert_eq!(
6666 view.selected_display_ranges(cx),
6667 &[empty_range(0, "ⓐⓑ…".len())]
6668 );
6669 view.move_left(&MoveLeft, cx);
6670 assert_eq!(
6671 view.selected_display_ranges(cx),
6672 &[empty_range(0, "ⓐⓑ".len())]
6673 );
6674 view.move_left(&MoveLeft, cx);
6675 assert_eq!(
6676 view.selected_display_ranges(cx),
6677 &[empty_range(0, "ⓐ".len())]
6678 );
6679 });
6680 }
6681
6682 #[gpui::test]
6683 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6684 populate_settings(cx);
6685 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6686 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6687 view.update(cx, |view, cx| {
6688 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6689 view.move_down(&MoveDown, cx);
6690 assert_eq!(
6691 view.selected_display_ranges(cx),
6692 &[empty_range(1, "abcd".len())]
6693 );
6694
6695 view.move_down(&MoveDown, cx);
6696 assert_eq!(
6697 view.selected_display_ranges(cx),
6698 &[empty_range(2, "αβγ".len())]
6699 );
6700
6701 view.move_down(&MoveDown, cx);
6702 assert_eq!(
6703 view.selected_display_ranges(cx),
6704 &[empty_range(3, "abcd".len())]
6705 );
6706
6707 view.move_down(&MoveDown, cx);
6708 assert_eq!(
6709 view.selected_display_ranges(cx),
6710 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6711 );
6712
6713 view.move_up(&MoveUp, cx);
6714 assert_eq!(
6715 view.selected_display_ranges(cx),
6716 &[empty_range(3, "abcd".len())]
6717 );
6718
6719 view.move_up(&MoveUp, cx);
6720 assert_eq!(
6721 view.selected_display_ranges(cx),
6722 &[empty_range(2, "αβγ".len())]
6723 );
6724 });
6725 }
6726
6727 #[gpui::test]
6728 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6729 populate_settings(cx);
6730 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6731 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6732 view.update(cx, |view, cx| {
6733 view.select_display_ranges(
6734 &[
6735 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6736 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6737 ],
6738 cx,
6739 );
6740 });
6741
6742 view.update(cx, |view, cx| {
6743 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6744 assert_eq!(
6745 view.selected_display_ranges(cx),
6746 &[
6747 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6748 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6749 ]
6750 );
6751 });
6752
6753 view.update(cx, |view, cx| {
6754 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6755 assert_eq!(
6756 view.selected_display_ranges(cx),
6757 &[
6758 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6759 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6760 ]
6761 );
6762 });
6763
6764 view.update(cx, |view, cx| {
6765 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6766 assert_eq!(
6767 view.selected_display_ranges(cx),
6768 &[
6769 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6770 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6771 ]
6772 );
6773 });
6774
6775 view.update(cx, |view, cx| {
6776 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6777 assert_eq!(
6778 view.selected_display_ranges(cx),
6779 &[
6780 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6781 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6782 ]
6783 );
6784 });
6785
6786 // Moving to the end of line again is a no-op.
6787 view.update(cx, |view, cx| {
6788 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6789 assert_eq!(
6790 view.selected_display_ranges(cx),
6791 &[
6792 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6793 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6794 ]
6795 );
6796 });
6797
6798 view.update(cx, |view, cx| {
6799 view.move_left(&MoveLeft, cx);
6800 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6801 assert_eq!(
6802 view.selected_display_ranges(cx),
6803 &[
6804 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6805 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6806 ]
6807 );
6808 });
6809
6810 view.update(cx, |view, cx| {
6811 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6812 assert_eq!(
6813 view.selected_display_ranges(cx),
6814 &[
6815 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6816 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6817 ]
6818 );
6819 });
6820
6821 view.update(cx, |view, cx| {
6822 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6823 assert_eq!(
6824 view.selected_display_ranges(cx),
6825 &[
6826 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6827 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6828 ]
6829 );
6830 });
6831
6832 view.update(cx, |view, cx| {
6833 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6834 assert_eq!(
6835 view.selected_display_ranges(cx),
6836 &[
6837 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6838 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6839 ]
6840 );
6841 });
6842
6843 view.update(cx, |view, cx| {
6844 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6845 assert_eq!(view.display_text(cx), "ab\n de");
6846 assert_eq!(
6847 view.selected_display_ranges(cx),
6848 &[
6849 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6850 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6851 ]
6852 );
6853 });
6854
6855 view.update(cx, |view, cx| {
6856 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6857 assert_eq!(view.display_text(cx), "\n");
6858 assert_eq!(
6859 view.selected_display_ranges(cx),
6860 &[
6861 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6862 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6863 ]
6864 );
6865 });
6866 }
6867
6868 #[gpui::test]
6869 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6870 populate_settings(cx);
6871 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6872 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6873 view.update(cx, |view, cx| {
6874 view.select_display_ranges(
6875 &[
6876 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6877 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6878 ],
6879 cx,
6880 );
6881
6882 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6883 assert_selection_ranges(
6884 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6885 vec![('<', '>'), ('[', ']')],
6886 view,
6887 cx,
6888 );
6889
6890 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6891 assert_selection_ranges(
6892 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
6893 vec![('<', '>'), ('[', ']')],
6894 view,
6895 cx,
6896 );
6897
6898 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6899 assert_selection_ranges(
6900 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
6901 vec![('<', '>'), ('[', ']')],
6902 view,
6903 cx,
6904 );
6905
6906 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6907 assert_selection_ranges(
6908 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
6909 vec![('<', '>'), ('[', ']')],
6910 view,
6911 cx,
6912 );
6913
6914 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6915 assert_selection_ranges(
6916 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
6917 vec![('<', '>'), ('[', ']')],
6918 view,
6919 cx,
6920 );
6921
6922 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6923 assert_selection_ranges(
6924 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
6925 vec![('<', '>'), ('[', ']')],
6926 view,
6927 cx,
6928 );
6929
6930 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6931 assert_selection_ranges(
6932 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
6933 vec![('<', '>'), ('[', ']')],
6934 view,
6935 cx,
6936 );
6937
6938 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6939 assert_selection_ranges(
6940 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6941 vec![('<', '>'), ('[', ']')],
6942 view,
6943 cx,
6944 );
6945
6946 view.move_right(&MoveRight, cx);
6947 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6948 assert_selection_ranges(
6949 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6950 vec![('<', '>'), ('[', ']')],
6951 view,
6952 cx,
6953 );
6954
6955 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6956 assert_selection_ranges(
6957 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
6958 vec![('<', '>'), ('[', ']')],
6959 view,
6960 cx,
6961 );
6962
6963 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
6964 assert_selection_ranges(
6965 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6966 vec![('<', '>'), ('[', ']')],
6967 view,
6968 cx,
6969 );
6970 });
6971 }
6972
6973 #[gpui::test]
6974 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6975 populate_settings(cx);
6976 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6977 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6978
6979 view.update(cx, |view, cx| {
6980 view.set_wrap_width(Some(140.), cx);
6981 assert_eq!(
6982 view.display_text(cx),
6983 "use one::{\n two::three::\n four::five\n};"
6984 );
6985
6986 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6987
6988 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6989 assert_eq!(
6990 view.selected_display_ranges(cx),
6991 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6992 );
6993
6994 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6995 assert_eq!(
6996 view.selected_display_ranges(cx),
6997 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6998 );
6999
7000 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7001 assert_eq!(
7002 view.selected_display_ranges(cx),
7003 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7004 );
7005
7006 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7007 assert_eq!(
7008 view.selected_display_ranges(cx),
7009 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7010 );
7011
7012 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7013 assert_eq!(
7014 view.selected_display_ranges(cx),
7015 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7016 );
7017
7018 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7019 assert_eq!(
7020 view.selected_display_ranges(cx),
7021 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7022 );
7023 });
7024 }
7025
7026 #[gpui::test]
7027 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7028 populate_settings(cx);
7029 let buffer = MultiBuffer::build_simple("one two three four", cx);
7030 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7031
7032 view.update(cx, |view, cx| {
7033 view.select_display_ranges(
7034 &[
7035 // an empty selection - the preceding word fragment is deleted
7036 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7037 // characters selected - they are deleted
7038 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7039 ],
7040 cx,
7041 );
7042 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
7043 });
7044
7045 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7046
7047 view.update(cx, |view, cx| {
7048 view.select_display_ranges(
7049 &[
7050 // an empty selection - the following word fragment is deleted
7051 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7052 // characters selected - they are deleted
7053 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7054 ],
7055 cx,
7056 );
7057 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
7058 });
7059
7060 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7061 }
7062
7063 #[gpui::test]
7064 fn test_newline(cx: &mut gpui::MutableAppContext) {
7065 populate_settings(cx);
7066 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7067 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7068
7069 view.update(cx, |view, cx| {
7070 view.select_display_ranges(
7071 &[
7072 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7073 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7074 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7075 ],
7076 cx,
7077 );
7078
7079 view.newline(&Newline, cx);
7080 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7081 });
7082 }
7083
7084 #[gpui::test]
7085 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7086 populate_settings(cx);
7087 let buffer = MultiBuffer::build_simple(
7088 "
7089 a
7090 b(
7091 X
7092 )
7093 c(
7094 X
7095 )
7096 "
7097 .unindent()
7098 .as_str(),
7099 cx,
7100 );
7101
7102 let (_, editor) = cx.add_window(Default::default(), |cx| {
7103 let mut editor = build_editor(buffer.clone(), cx);
7104 editor.select_ranges(
7105 [
7106 Point::new(2, 4)..Point::new(2, 5),
7107 Point::new(5, 4)..Point::new(5, 5),
7108 ],
7109 None,
7110 cx,
7111 );
7112 editor
7113 });
7114
7115 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7116 buffer.update(cx, |buffer, cx| {
7117 buffer.edit(
7118 [
7119 Point::new(1, 2)..Point::new(3, 0),
7120 Point::new(4, 2)..Point::new(6, 0),
7121 ],
7122 "",
7123 cx,
7124 );
7125 assert_eq!(
7126 buffer.read(cx).text(),
7127 "
7128 a
7129 b()
7130 c()
7131 "
7132 .unindent()
7133 );
7134 });
7135
7136 editor.update(cx, |editor, cx| {
7137 assert_eq!(
7138 editor.selected_ranges(cx),
7139 &[
7140 Point::new(1, 2)..Point::new(1, 2),
7141 Point::new(2, 2)..Point::new(2, 2),
7142 ],
7143 );
7144
7145 editor.newline(&Newline, cx);
7146 assert_eq!(
7147 editor.text(cx),
7148 "
7149 a
7150 b(
7151 )
7152 c(
7153 )
7154 "
7155 .unindent()
7156 );
7157
7158 // The selections are moved after the inserted newlines
7159 assert_eq!(
7160 editor.selected_ranges(cx),
7161 &[
7162 Point::new(2, 0)..Point::new(2, 0),
7163 Point::new(4, 0)..Point::new(4, 0),
7164 ],
7165 );
7166 });
7167 }
7168
7169 #[gpui::test]
7170 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7171 populate_settings(cx);
7172 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7173 let (_, editor) = cx.add_window(Default::default(), |cx| {
7174 let mut editor = build_editor(buffer.clone(), cx);
7175 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7176 editor
7177 });
7178
7179 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7180 buffer.update(cx, |buffer, cx| {
7181 buffer.edit([2..5, 10..13, 18..21], "", cx);
7182 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7183 });
7184
7185 editor.update(cx, |editor, cx| {
7186 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7187
7188 editor.insert("Z", cx);
7189 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7190
7191 // The selections are moved after the inserted characters
7192 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7193 });
7194 }
7195
7196 #[gpui::test]
7197 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7198 populate_settings(cx);
7199 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7200 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7201
7202 view.update(cx, |view, cx| {
7203 // two selections on the same line
7204 view.select_display_ranges(
7205 &[
7206 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7207 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7208 ],
7209 cx,
7210 );
7211
7212 // indent from mid-tabstop to full tabstop
7213 view.tab(&Tab, cx);
7214 assert_eq!(view.text(cx), " one two\nthree\n four");
7215 assert_eq!(
7216 view.selected_display_ranges(cx),
7217 &[
7218 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7219 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7220 ]
7221 );
7222
7223 // outdent from 1 tabstop to 0 tabstops
7224 view.outdent(&Outdent, cx);
7225 assert_eq!(view.text(cx), "one two\nthree\n four");
7226 assert_eq!(
7227 view.selected_display_ranges(cx),
7228 &[
7229 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7230 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7231 ]
7232 );
7233
7234 // select across line ending
7235 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7236
7237 // indent and outdent affect only the preceding line
7238 view.tab(&Tab, cx);
7239 assert_eq!(view.text(cx), "one two\n three\n four");
7240 assert_eq!(
7241 view.selected_display_ranges(cx),
7242 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7243 );
7244 view.outdent(&Outdent, cx);
7245 assert_eq!(view.text(cx), "one two\nthree\n four");
7246 assert_eq!(
7247 view.selected_display_ranges(cx),
7248 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7249 );
7250
7251 // Ensure that indenting/outdenting works when the cursor is at column 0.
7252 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7253 view.tab(&Tab, cx);
7254 assert_eq!(view.text(cx), "one two\n three\n four");
7255 assert_eq!(
7256 view.selected_display_ranges(cx),
7257 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7258 );
7259
7260 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7261 view.outdent(&Outdent, cx);
7262 assert_eq!(view.text(cx), "one two\nthree\n four");
7263 assert_eq!(
7264 view.selected_display_ranges(cx),
7265 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7266 );
7267 });
7268 }
7269
7270 #[gpui::test]
7271 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7272 populate_settings(cx);
7273 let (_, view) = cx.add_window(Default::default(), |cx| {
7274 build_editor(MultiBuffer::build_simple("", cx), cx)
7275 });
7276
7277 view.update(cx, |view, cx| {
7278 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7279 view.select_display_ranges(
7280 &[
7281 // an empty selection - the preceding character is deleted
7282 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7283 // one character selected - it is deleted
7284 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7285 // a line suffix selected - it is deleted
7286 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7287 ],
7288 cx,
7289 );
7290 view.backspace(&Backspace, cx);
7291 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7292
7293 view.set_text(" one\n two\n three\n four", cx);
7294 view.select_display_ranges(
7295 &[
7296 // cursors at the the end of leading indent - last indent is deleted
7297 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7298 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7299 // cursors inside leading indent - overlapping indent deletions are coalesced
7300 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7301 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7302 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7303 // cursor at the beginning of a line - preceding newline is deleted
7304 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7305 // selection inside leading indent - only the selected character is deleted
7306 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7307 ],
7308 cx,
7309 );
7310 view.backspace(&Backspace, cx);
7311 assert_eq!(view.text(cx), "one\n two\n three four");
7312 });
7313 }
7314
7315 #[gpui::test]
7316 fn test_delete(cx: &mut gpui::MutableAppContext) {
7317 populate_settings(cx);
7318 let buffer =
7319 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7320 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7321
7322 view.update(cx, |view, cx| {
7323 view.select_display_ranges(
7324 &[
7325 // an empty selection - the following character is deleted
7326 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7327 // one character selected - it is deleted
7328 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7329 // a line suffix selected - it is deleted
7330 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7331 ],
7332 cx,
7333 );
7334 view.delete(&Delete, cx);
7335 });
7336
7337 assert_eq!(
7338 buffer.read(cx).read(cx).text(),
7339 "on two three\nfou five six\nseven ten\n"
7340 );
7341 }
7342
7343 #[gpui::test]
7344 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7345 populate_settings(cx);
7346 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7347 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7348 view.update(cx, |view, cx| {
7349 view.select_display_ranges(
7350 &[
7351 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7352 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7353 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7354 ],
7355 cx,
7356 );
7357 view.delete_line(&DeleteLine, cx);
7358 assert_eq!(view.display_text(cx), "ghi");
7359 assert_eq!(
7360 view.selected_display_ranges(cx),
7361 vec![
7362 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7363 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7364 ]
7365 );
7366 });
7367
7368 populate_settings(cx);
7369 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7370 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7371 view.update(cx, |view, cx| {
7372 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7373 view.delete_line(&DeleteLine, cx);
7374 assert_eq!(view.display_text(cx), "ghi\n");
7375 assert_eq!(
7376 view.selected_display_ranges(cx),
7377 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7378 );
7379 });
7380 }
7381
7382 #[gpui::test]
7383 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7384 populate_settings(cx);
7385 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7386 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7387 view.update(cx, |view, cx| {
7388 view.select_display_ranges(
7389 &[
7390 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7391 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7392 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7393 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7394 ],
7395 cx,
7396 );
7397 view.duplicate_line(&DuplicateLine, cx);
7398 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7399 assert_eq!(
7400 view.selected_display_ranges(cx),
7401 vec![
7402 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7403 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7404 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7405 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7406 ]
7407 );
7408 });
7409
7410 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7411 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7412 view.update(cx, |view, cx| {
7413 view.select_display_ranges(
7414 &[
7415 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7416 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7417 ],
7418 cx,
7419 );
7420 view.duplicate_line(&DuplicateLine, cx);
7421 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7422 assert_eq!(
7423 view.selected_display_ranges(cx),
7424 vec![
7425 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7426 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7427 ]
7428 );
7429 });
7430 }
7431
7432 #[gpui::test]
7433 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7434 populate_settings(cx);
7435 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7436 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7437 view.update(cx, |view, cx| {
7438 view.fold_ranges(
7439 vec![
7440 Point::new(0, 2)..Point::new(1, 2),
7441 Point::new(2, 3)..Point::new(4, 1),
7442 Point::new(7, 0)..Point::new(8, 4),
7443 ],
7444 cx,
7445 );
7446 view.select_display_ranges(
7447 &[
7448 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7449 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7450 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7451 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7452 ],
7453 cx,
7454 );
7455 assert_eq!(
7456 view.display_text(cx),
7457 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7458 );
7459
7460 view.move_line_up(&MoveLineUp, cx);
7461 assert_eq!(
7462 view.display_text(cx),
7463 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7464 );
7465 assert_eq!(
7466 view.selected_display_ranges(cx),
7467 vec![
7468 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7469 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7470 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7471 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7472 ]
7473 );
7474 });
7475
7476 view.update(cx, |view, cx| {
7477 view.move_line_down(&MoveLineDown, cx);
7478 assert_eq!(
7479 view.display_text(cx),
7480 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7481 );
7482 assert_eq!(
7483 view.selected_display_ranges(cx),
7484 vec![
7485 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7486 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7487 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7488 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7489 ]
7490 );
7491 });
7492
7493 view.update(cx, |view, cx| {
7494 view.move_line_down(&MoveLineDown, cx);
7495 assert_eq!(
7496 view.display_text(cx),
7497 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7498 );
7499 assert_eq!(
7500 view.selected_display_ranges(cx),
7501 vec![
7502 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7503 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7504 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7505 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7506 ]
7507 );
7508 });
7509
7510 view.update(cx, |view, cx| {
7511 view.move_line_up(&MoveLineUp, cx);
7512 assert_eq!(
7513 view.display_text(cx),
7514 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7515 );
7516 assert_eq!(
7517 view.selected_display_ranges(cx),
7518 vec![
7519 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7520 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7521 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7522 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7523 ]
7524 );
7525 });
7526 }
7527
7528 #[gpui::test]
7529 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7530 populate_settings(cx);
7531 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7532 let snapshot = buffer.read(cx).snapshot(cx);
7533 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7534 editor.update(cx, |editor, cx| {
7535 editor.insert_blocks(
7536 [BlockProperties {
7537 position: snapshot.anchor_after(Point::new(2, 0)),
7538 disposition: BlockDisposition::Below,
7539 height: 1,
7540 render: Arc::new(|_| Empty::new().boxed()),
7541 }],
7542 cx,
7543 );
7544 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7545 editor.move_line_down(&MoveLineDown, cx);
7546 });
7547 }
7548
7549 #[gpui::test]
7550 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7551 populate_settings(cx);
7552 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7553 let view = cx
7554 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7555 .1;
7556
7557 // Cut with three selections. Clipboard text is divided into three slices.
7558 view.update(cx, |view, cx| {
7559 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7560 view.cut(&Cut, cx);
7561 assert_eq!(view.display_text(cx), "two four six ");
7562 });
7563
7564 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7565 view.update(cx, |view, cx| {
7566 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7567 view.paste(&Paste, cx);
7568 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7569 assert_eq!(
7570 view.selected_display_ranges(cx),
7571 &[
7572 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7573 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7574 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7575 ]
7576 );
7577 });
7578
7579 // Paste again but with only two cursors. Since the number of cursors doesn't
7580 // match the number of slices in the clipboard, the entire clipboard text
7581 // is pasted at each cursor.
7582 view.update(cx, |view, cx| {
7583 view.select_ranges(vec![0..0, 31..31], None, cx);
7584 view.handle_input(&Input("( ".into()), cx);
7585 view.paste(&Paste, cx);
7586 view.handle_input(&Input(") ".into()), cx);
7587 assert_eq!(
7588 view.display_text(cx),
7589 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7590 );
7591 });
7592
7593 view.update(cx, |view, cx| {
7594 view.select_ranges(vec![0..0], None, cx);
7595 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7596 assert_eq!(
7597 view.display_text(cx),
7598 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7599 );
7600 });
7601
7602 // Cut with three selections, one of which is full-line.
7603 view.update(cx, |view, cx| {
7604 view.select_display_ranges(
7605 &[
7606 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7607 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7608 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7609 ],
7610 cx,
7611 );
7612 view.cut(&Cut, cx);
7613 assert_eq!(
7614 view.display_text(cx),
7615 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7616 );
7617 });
7618
7619 // Paste with three selections, noticing how the copied selection that was full-line
7620 // gets inserted before the second cursor.
7621 view.update(cx, |view, cx| {
7622 view.select_display_ranges(
7623 &[
7624 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7625 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7626 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7627 ],
7628 cx,
7629 );
7630 view.paste(&Paste, cx);
7631 assert_eq!(
7632 view.display_text(cx),
7633 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7634 );
7635 assert_eq!(
7636 view.selected_display_ranges(cx),
7637 &[
7638 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7639 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7640 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7641 ]
7642 );
7643 });
7644
7645 // Copy with a single cursor only, which writes the whole line into the clipboard.
7646 view.update(cx, |view, cx| {
7647 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7648 view.copy(&Copy, cx);
7649 });
7650
7651 // Paste with three selections, noticing how the copied full-line selection is inserted
7652 // before the empty selections but replaces the selection that is non-empty.
7653 view.update(cx, |view, cx| {
7654 view.select_display_ranges(
7655 &[
7656 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7657 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7658 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7659 ],
7660 cx,
7661 );
7662 view.paste(&Paste, cx);
7663 assert_eq!(
7664 view.display_text(cx),
7665 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7666 );
7667 assert_eq!(
7668 view.selected_display_ranges(cx),
7669 &[
7670 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7671 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7672 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7673 ]
7674 );
7675 });
7676 }
7677
7678 #[gpui::test]
7679 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7680 populate_settings(cx);
7681 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7682 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7683 view.update(cx, |view, cx| {
7684 view.select_all(&SelectAll, cx);
7685 assert_eq!(
7686 view.selected_display_ranges(cx),
7687 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7688 );
7689 });
7690 }
7691
7692 #[gpui::test]
7693 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7694 populate_settings(cx);
7695 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7696 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7697 view.update(cx, |view, cx| {
7698 view.select_display_ranges(
7699 &[
7700 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7701 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7702 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7703 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7704 ],
7705 cx,
7706 );
7707 view.select_line(&SelectLine, cx);
7708 assert_eq!(
7709 view.selected_display_ranges(cx),
7710 vec![
7711 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7712 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7713 ]
7714 );
7715 });
7716
7717 view.update(cx, |view, cx| {
7718 view.select_line(&SelectLine, cx);
7719 assert_eq!(
7720 view.selected_display_ranges(cx),
7721 vec![
7722 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7723 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7724 ]
7725 );
7726 });
7727
7728 view.update(cx, |view, cx| {
7729 view.select_line(&SelectLine, cx);
7730 assert_eq!(
7731 view.selected_display_ranges(cx),
7732 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7733 );
7734 });
7735 }
7736
7737 #[gpui::test]
7738 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7739 populate_settings(cx);
7740 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7741 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7742 view.update(cx, |view, cx| {
7743 view.fold_ranges(
7744 vec![
7745 Point::new(0, 2)..Point::new(1, 2),
7746 Point::new(2, 3)..Point::new(4, 1),
7747 Point::new(7, 0)..Point::new(8, 4),
7748 ],
7749 cx,
7750 );
7751 view.select_display_ranges(
7752 &[
7753 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7754 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7755 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7756 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7757 ],
7758 cx,
7759 );
7760 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7761 });
7762
7763 view.update(cx, |view, cx| {
7764 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7765 assert_eq!(
7766 view.display_text(cx),
7767 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7768 );
7769 assert_eq!(
7770 view.selected_display_ranges(cx),
7771 [
7772 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7773 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7774 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7775 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7776 ]
7777 );
7778 });
7779
7780 view.update(cx, |view, cx| {
7781 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7782 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7783 assert_eq!(
7784 view.display_text(cx),
7785 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7786 );
7787 assert_eq!(
7788 view.selected_display_ranges(cx),
7789 [
7790 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7791 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7792 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7793 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7794 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7795 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7796 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7797 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7798 ]
7799 );
7800 });
7801 }
7802
7803 #[gpui::test]
7804 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7805 populate_settings(cx);
7806 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7807 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7808
7809 view.update(cx, |view, cx| {
7810 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7811 });
7812 view.update(cx, |view, cx| {
7813 view.add_selection_above(&AddSelectionAbove, cx);
7814 assert_eq!(
7815 view.selected_display_ranges(cx),
7816 vec![
7817 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7818 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7819 ]
7820 );
7821 });
7822
7823 view.update(cx, |view, cx| {
7824 view.add_selection_above(&AddSelectionAbove, cx);
7825 assert_eq!(
7826 view.selected_display_ranges(cx),
7827 vec![
7828 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7829 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7830 ]
7831 );
7832 });
7833
7834 view.update(cx, |view, cx| {
7835 view.add_selection_below(&AddSelectionBelow, cx);
7836 assert_eq!(
7837 view.selected_display_ranges(cx),
7838 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7839 );
7840 });
7841
7842 view.update(cx, |view, cx| {
7843 view.add_selection_below(&AddSelectionBelow, cx);
7844 assert_eq!(
7845 view.selected_display_ranges(cx),
7846 vec![
7847 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7848 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7849 ]
7850 );
7851 });
7852
7853 view.update(cx, |view, cx| {
7854 view.add_selection_below(&AddSelectionBelow, cx);
7855 assert_eq!(
7856 view.selected_display_ranges(cx),
7857 vec![
7858 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7859 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7860 ]
7861 );
7862 });
7863
7864 view.update(cx, |view, cx| {
7865 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7866 });
7867 view.update(cx, |view, cx| {
7868 view.add_selection_below(&AddSelectionBelow, cx);
7869 assert_eq!(
7870 view.selected_display_ranges(cx),
7871 vec![
7872 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7873 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7874 ]
7875 );
7876 });
7877
7878 view.update(cx, |view, cx| {
7879 view.add_selection_below(&AddSelectionBelow, cx);
7880 assert_eq!(
7881 view.selected_display_ranges(cx),
7882 vec![
7883 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7884 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7885 ]
7886 );
7887 });
7888
7889 view.update(cx, |view, cx| {
7890 view.add_selection_above(&AddSelectionAbove, cx);
7891 assert_eq!(
7892 view.selected_display_ranges(cx),
7893 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7894 );
7895 });
7896
7897 view.update(cx, |view, cx| {
7898 view.add_selection_above(&AddSelectionAbove, cx);
7899 assert_eq!(
7900 view.selected_display_ranges(cx),
7901 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7902 );
7903 });
7904
7905 view.update(cx, |view, cx| {
7906 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7907 view.add_selection_below(&AddSelectionBelow, cx);
7908 assert_eq!(
7909 view.selected_display_ranges(cx),
7910 vec![
7911 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7912 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7913 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7914 ]
7915 );
7916 });
7917
7918 view.update(cx, |view, cx| {
7919 view.add_selection_below(&AddSelectionBelow, cx);
7920 assert_eq!(
7921 view.selected_display_ranges(cx),
7922 vec![
7923 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7924 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7925 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7926 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7927 ]
7928 );
7929 });
7930
7931 view.update(cx, |view, cx| {
7932 view.add_selection_above(&AddSelectionAbove, cx);
7933 assert_eq!(
7934 view.selected_display_ranges(cx),
7935 vec![
7936 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7937 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7938 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7939 ]
7940 );
7941 });
7942
7943 view.update(cx, |view, cx| {
7944 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7945 });
7946 view.update(cx, |view, cx| {
7947 view.add_selection_above(&AddSelectionAbove, cx);
7948 assert_eq!(
7949 view.selected_display_ranges(cx),
7950 vec![
7951 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7952 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7953 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7954 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7955 ]
7956 );
7957 });
7958
7959 view.update(cx, |view, cx| {
7960 view.add_selection_below(&AddSelectionBelow, cx);
7961 assert_eq!(
7962 view.selected_display_ranges(cx),
7963 vec![
7964 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7965 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7966 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7967 ]
7968 );
7969 });
7970 }
7971
7972 #[gpui::test]
7973 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7974 cx.update(populate_settings);
7975 let language = Arc::new(Language::new(
7976 LanguageConfig::default(),
7977 Some(tree_sitter_rust::language()),
7978 ));
7979
7980 let text = r#"
7981 use mod1::mod2::{mod3, mod4};
7982
7983 fn fn_1(param1: bool, param2: &str) {
7984 let var1 = "text";
7985 }
7986 "#
7987 .unindent();
7988
7989 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7990 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7991 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7992 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7993 .await;
7994
7995 view.update(cx, |view, cx| {
7996 view.select_display_ranges(
7997 &[
7998 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7999 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8000 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8001 ],
8002 cx,
8003 );
8004 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8005 });
8006 assert_eq!(
8007 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8008 &[
8009 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8010 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8011 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8012 ]
8013 );
8014
8015 view.update(cx, |view, cx| {
8016 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8017 });
8018 assert_eq!(
8019 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8020 &[
8021 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8022 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8023 ]
8024 );
8025
8026 view.update(cx, |view, cx| {
8027 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8028 });
8029 assert_eq!(
8030 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8031 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8032 );
8033
8034 // Trying to expand the selected syntax node one more time has no effect.
8035 view.update(cx, |view, cx| {
8036 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8037 });
8038 assert_eq!(
8039 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8040 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8041 );
8042
8043 view.update(cx, |view, cx| {
8044 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8045 });
8046 assert_eq!(
8047 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8048 &[
8049 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8050 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8051 ]
8052 );
8053
8054 view.update(cx, |view, cx| {
8055 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8056 });
8057 assert_eq!(
8058 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8059 &[
8060 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8061 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8062 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8063 ]
8064 );
8065
8066 view.update(cx, |view, cx| {
8067 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8068 });
8069 assert_eq!(
8070 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8071 &[
8072 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8073 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8074 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8075 ]
8076 );
8077
8078 // Trying to shrink the selected syntax node one more time has no effect.
8079 view.update(cx, |view, cx| {
8080 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8081 });
8082 assert_eq!(
8083 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8084 &[
8085 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8086 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8087 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8088 ]
8089 );
8090
8091 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8092 // a fold.
8093 view.update(cx, |view, cx| {
8094 view.fold_ranges(
8095 vec![
8096 Point::new(0, 21)..Point::new(0, 24),
8097 Point::new(3, 20)..Point::new(3, 22),
8098 ],
8099 cx,
8100 );
8101 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8102 });
8103 assert_eq!(
8104 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8105 &[
8106 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8107 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8108 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8109 ]
8110 );
8111 }
8112
8113 #[gpui::test]
8114 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8115 cx.update(populate_settings);
8116 let language = Arc::new(
8117 Language::new(
8118 LanguageConfig {
8119 brackets: vec![
8120 BracketPair {
8121 start: "{".to_string(),
8122 end: "}".to_string(),
8123 close: false,
8124 newline: true,
8125 },
8126 BracketPair {
8127 start: "(".to_string(),
8128 end: ")".to_string(),
8129 close: false,
8130 newline: true,
8131 },
8132 ],
8133 ..Default::default()
8134 },
8135 Some(tree_sitter_rust::language()),
8136 )
8137 .with_indents_query(
8138 r#"
8139 (_ "(" ")" @end) @indent
8140 (_ "{" "}" @end) @indent
8141 "#,
8142 )
8143 .unwrap(),
8144 );
8145
8146 let text = "fn a() {}";
8147
8148 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8149 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8150 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8151 editor
8152 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8153 .await;
8154
8155 editor.update(cx, |editor, cx| {
8156 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8157 editor.newline(&Newline, cx);
8158 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8159 assert_eq!(
8160 editor.selected_ranges(cx),
8161 &[
8162 Point::new(1, 4)..Point::new(1, 4),
8163 Point::new(3, 4)..Point::new(3, 4),
8164 Point::new(5, 0)..Point::new(5, 0)
8165 ]
8166 );
8167 });
8168 }
8169
8170 #[gpui::test]
8171 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8172 cx.update(populate_settings);
8173 let language = Arc::new(Language::new(
8174 LanguageConfig {
8175 brackets: vec![
8176 BracketPair {
8177 start: "{".to_string(),
8178 end: "}".to_string(),
8179 close: true,
8180 newline: true,
8181 },
8182 BracketPair {
8183 start: "/*".to_string(),
8184 end: " */".to_string(),
8185 close: true,
8186 newline: true,
8187 },
8188 ],
8189 autoclose_before: "})]".to_string(),
8190 ..Default::default()
8191 },
8192 Some(tree_sitter_rust::language()),
8193 ));
8194
8195 let text = r#"
8196 a
8197
8198 /
8199
8200 "#
8201 .unindent();
8202
8203 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8204 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8205 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8206 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8207 .await;
8208
8209 view.update(cx, |view, cx| {
8210 view.select_display_ranges(
8211 &[
8212 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8213 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8214 ],
8215 cx,
8216 );
8217
8218 view.handle_input(&Input("{".to_string()), cx);
8219 view.handle_input(&Input("{".to_string()), cx);
8220 view.handle_input(&Input("{".to_string()), cx);
8221 assert_eq!(
8222 view.text(cx),
8223 "
8224 {{{}}}
8225 {{{}}}
8226 /
8227
8228 "
8229 .unindent()
8230 );
8231
8232 view.move_right(&MoveRight, cx);
8233 view.handle_input(&Input("}".to_string()), cx);
8234 view.handle_input(&Input("}".to_string()), cx);
8235 view.handle_input(&Input("}".to_string()), cx);
8236 assert_eq!(
8237 view.text(cx),
8238 "
8239 {{{}}}}
8240 {{{}}}}
8241 /
8242
8243 "
8244 .unindent()
8245 );
8246
8247 view.undo(&Undo, cx);
8248 view.handle_input(&Input("/".to_string()), cx);
8249 view.handle_input(&Input("*".to_string()), cx);
8250 assert_eq!(
8251 view.text(cx),
8252 "
8253 /* */
8254 /* */
8255 /
8256
8257 "
8258 .unindent()
8259 );
8260
8261 view.undo(&Undo, cx);
8262 view.select_display_ranges(
8263 &[
8264 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8265 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8266 ],
8267 cx,
8268 );
8269 view.handle_input(&Input("*".to_string()), cx);
8270 assert_eq!(
8271 view.text(cx),
8272 "
8273 a
8274
8275 /*
8276 *
8277 "
8278 .unindent()
8279 );
8280
8281 // Don't autoclose if the next character isn't whitespace and isn't
8282 // listed in the language's "autoclose_before" section.
8283 view.finalize_last_transaction(cx);
8284 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8285 view.handle_input(&Input("{".to_string()), cx);
8286 assert_eq!(
8287 view.text(cx),
8288 "
8289 {a
8290
8291 /*
8292 *
8293 "
8294 .unindent()
8295 );
8296
8297 view.undo(&Undo, cx);
8298 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8299 view.handle_input(&Input("{".to_string()), cx);
8300 assert_eq!(
8301 view.text(cx),
8302 "
8303 {a}
8304
8305 /*
8306 *
8307 "
8308 .unindent()
8309 );
8310 assert_eq!(
8311 view.selected_display_ranges(cx),
8312 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8313 );
8314 });
8315 }
8316
8317 #[gpui::test]
8318 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8319 cx.update(populate_settings);
8320
8321 let text = "
8322 a. b
8323 a. b
8324 a. b
8325 "
8326 .unindent();
8327 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8328 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8329
8330 editor.update(cx, |editor, cx| {
8331 let buffer = &editor.snapshot(cx).buffer_snapshot;
8332 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8333 let insertion_ranges = [
8334 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8335 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8336 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8337 ];
8338
8339 editor
8340 .insert_snippet(&insertion_ranges, snippet, cx)
8341 .unwrap();
8342 assert_eq!(
8343 editor.text(cx),
8344 "
8345 a.f(one, two, three) b
8346 a.f(one, two, three) b
8347 a.f(one, two, three) b
8348 "
8349 .unindent()
8350 );
8351 assert_eq!(
8352 editor.selected_ranges::<Point>(cx),
8353 &[
8354 Point::new(0, 4)..Point::new(0, 7),
8355 Point::new(0, 14)..Point::new(0, 19),
8356 Point::new(1, 4)..Point::new(1, 7),
8357 Point::new(1, 14)..Point::new(1, 19),
8358 Point::new(2, 4)..Point::new(2, 7),
8359 Point::new(2, 14)..Point::new(2, 19),
8360 ]
8361 );
8362
8363 // Can't move earlier than the first tab stop
8364 editor.move_to_prev_snippet_tabstop(cx);
8365 assert_eq!(
8366 editor.selected_ranges::<Point>(cx),
8367 &[
8368 Point::new(0, 4)..Point::new(0, 7),
8369 Point::new(0, 14)..Point::new(0, 19),
8370 Point::new(1, 4)..Point::new(1, 7),
8371 Point::new(1, 14)..Point::new(1, 19),
8372 Point::new(2, 4)..Point::new(2, 7),
8373 Point::new(2, 14)..Point::new(2, 19),
8374 ]
8375 );
8376
8377 assert!(editor.move_to_next_snippet_tabstop(cx));
8378 assert_eq!(
8379 editor.selected_ranges::<Point>(cx),
8380 &[
8381 Point::new(0, 9)..Point::new(0, 12),
8382 Point::new(1, 9)..Point::new(1, 12),
8383 Point::new(2, 9)..Point::new(2, 12)
8384 ]
8385 );
8386
8387 editor.move_to_prev_snippet_tabstop(cx);
8388 assert_eq!(
8389 editor.selected_ranges::<Point>(cx),
8390 &[
8391 Point::new(0, 4)..Point::new(0, 7),
8392 Point::new(0, 14)..Point::new(0, 19),
8393 Point::new(1, 4)..Point::new(1, 7),
8394 Point::new(1, 14)..Point::new(1, 19),
8395 Point::new(2, 4)..Point::new(2, 7),
8396 Point::new(2, 14)..Point::new(2, 19),
8397 ]
8398 );
8399
8400 assert!(editor.move_to_next_snippet_tabstop(cx));
8401 assert!(editor.move_to_next_snippet_tabstop(cx));
8402 assert_eq!(
8403 editor.selected_ranges::<Point>(cx),
8404 &[
8405 Point::new(0, 20)..Point::new(0, 20),
8406 Point::new(1, 20)..Point::new(1, 20),
8407 Point::new(2, 20)..Point::new(2, 20)
8408 ]
8409 );
8410
8411 // As soon as the last tab stop is reached, snippet state is gone
8412 editor.move_to_prev_snippet_tabstop(cx);
8413 assert_eq!(
8414 editor.selected_ranges::<Point>(cx),
8415 &[
8416 Point::new(0, 20)..Point::new(0, 20),
8417 Point::new(1, 20)..Point::new(1, 20),
8418 Point::new(2, 20)..Point::new(2, 20)
8419 ]
8420 );
8421 });
8422 }
8423
8424 #[gpui::test]
8425 async fn test_completion(cx: &mut gpui::TestAppContext) {
8426 cx.update(populate_settings);
8427
8428 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8429 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8430 completion_provider: Some(lsp::CompletionOptions {
8431 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8432 ..Default::default()
8433 }),
8434 ..Default::default()
8435 });
8436 let language = Arc::new(Language::new(
8437 LanguageConfig {
8438 name: "Rust".into(),
8439 path_suffixes: vec!["rs".to_string()],
8440 language_server: Some(language_server_config),
8441 ..Default::default()
8442 },
8443 Some(tree_sitter_rust::language()),
8444 ));
8445
8446 let text = "
8447 one
8448 two
8449 three
8450 "
8451 .unindent();
8452
8453 let fs = FakeFs::new(cx.background().clone());
8454 fs.insert_file("/file.rs", text).await;
8455
8456 let project = Project::test(fs, cx);
8457 project.update(cx, |project, _| project.languages().add(language));
8458
8459 let worktree_id = project
8460 .update(cx, |project, cx| {
8461 project.find_or_create_local_worktree("/file.rs", true, cx)
8462 })
8463 .await
8464 .unwrap()
8465 .0
8466 .read_with(cx, |tree, _| tree.id());
8467 let buffer = project
8468 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8469 .await
8470 .unwrap();
8471 let mut fake_server = fake_servers.next().await.unwrap();
8472
8473 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8474 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8475
8476 editor.update(cx, |editor, cx| {
8477 editor.project = Some(project);
8478 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8479 editor.handle_input(&Input(".".to_string()), cx);
8480 });
8481
8482 handle_completion_request(
8483 &mut fake_server,
8484 "/file.rs",
8485 Point::new(0, 4),
8486 vec![
8487 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8488 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8489 ],
8490 )
8491 .await;
8492 editor
8493 .condition(&cx, |editor, _| editor.context_menu_visible())
8494 .await;
8495
8496 let apply_additional_edits = editor.update(cx, |editor, cx| {
8497 editor.move_down(&MoveDown, cx);
8498 let apply_additional_edits = editor
8499 .confirm_completion(&ConfirmCompletion(None), cx)
8500 .unwrap();
8501 assert_eq!(
8502 editor.text(cx),
8503 "
8504 one.second_completion
8505 two
8506 three
8507 "
8508 .unindent()
8509 );
8510 apply_additional_edits
8511 });
8512
8513 handle_resolve_completion_request(
8514 &mut fake_server,
8515 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8516 )
8517 .await;
8518 apply_additional_edits.await.unwrap();
8519 assert_eq!(
8520 editor.read_with(cx, |editor, cx| editor.text(cx)),
8521 "
8522 one.second_completion
8523 two
8524 three
8525 additional edit
8526 "
8527 .unindent()
8528 );
8529
8530 editor.update(cx, |editor, cx| {
8531 editor.select_ranges(
8532 [
8533 Point::new(1, 3)..Point::new(1, 3),
8534 Point::new(2, 5)..Point::new(2, 5),
8535 ],
8536 None,
8537 cx,
8538 );
8539
8540 editor.handle_input(&Input(" ".to_string()), cx);
8541 assert!(editor.context_menu.is_none());
8542 editor.handle_input(&Input("s".to_string()), cx);
8543 assert!(editor.context_menu.is_none());
8544 });
8545
8546 handle_completion_request(
8547 &mut fake_server,
8548 "/file.rs",
8549 Point::new(2, 7),
8550 vec![
8551 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8552 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8553 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8554 ],
8555 )
8556 .await;
8557 editor
8558 .condition(&cx, |editor, _| editor.context_menu_visible())
8559 .await;
8560
8561 editor.update(cx, |editor, cx| {
8562 editor.handle_input(&Input("i".to_string()), cx);
8563 });
8564
8565 handle_completion_request(
8566 &mut fake_server,
8567 "/file.rs",
8568 Point::new(2, 8),
8569 vec![
8570 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8571 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8572 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8573 ],
8574 )
8575 .await;
8576 editor
8577 .condition(&cx, |editor, _| editor.context_menu_visible())
8578 .await;
8579
8580 let apply_additional_edits = editor.update(cx, |editor, cx| {
8581 let apply_additional_edits = editor
8582 .confirm_completion(&ConfirmCompletion(None), cx)
8583 .unwrap();
8584 assert_eq!(
8585 editor.text(cx),
8586 "
8587 one.second_completion
8588 two sixth_completion
8589 three sixth_completion
8590 additional edit
8591 "
8592 .unindent()
8593 );
8594 apply_additional_edits
8595 });
8596 handle_resolve_completion_request(&mut fake_server, None).await;
8597 apply_additional_edits.await.unwrap();
8598
8599 async fn handle_completion_request(
8600 fake: &mut FakeLanguageServer,
8601 path: &'static str,
8602 position: Point,
8603 completions: Vec<(Range<Point>, &'static str)>,
8604 ) {
8605 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8606 assert_eq!(
8607 params.text_document_position.text_document.uri,
8608 lsp::Url::from_file_path(path).unwrap()
8609 );
8610 assert_eq!(
8611 params.text_document_position.position,
8612 lsp::Position::new(position.row, position.column)
8613 );
8614 Some(lsp::CompletionResponse::Array(
8615 completions
8616 .iter()
8617 .map(|(range, new_text)| lsp::CompletionItem {
8618 label: new_text.to_string(),
8619 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8620 range: lsp::Range::new(
8621 lsp::Position::new(range.start.row, range.start.column),
8622 lsp::Position::new(range.start.row, range.start.column),
8623 ),
8624 new_text: new_text.to_string(),
8625 })),
8626 ..Default::default()
8627 })
8628 .collect(),
8629 ))
8630 })
8631 .next()
8632 .await;
8633 }
8634
8635 async fn handle_resolve_completion_request(
8636 fake: &mut FakeLanguageServer,
8637 edit: Option<(Range<Point>, &'static str)>,
8638 ) {
8639 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8640 lsp::CompletionItem {
8641 additional_text_edits: edit.clone().map(|(range, new_text)| {
8642 vec![lsp::TextEdit::new(
8643 lsp::Range::new(
8644 lsp::Position::new(range.start.row, range.start.column),
8645 lsp::Position::new(range.end.row, range.end.column),
8646 ),
8647 new_text.to_string(),
8648 )]
8649 }),
8650 ..Default::default()
8651 }
8652 })
8653 .next()
8654 .await;
8655 }
8656 }
8657
8658 #[gpui::test]
8659 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8660 cx.update(populate_settings);
8661 let language = Arc::new(Language::new(
8662 LanguageConfig {
8663 line_comment: Some("// ".to_string()),
8664 ..Default::default()
8665 },
8666 Some(tree_sitter_rust::language()),
8667 ));
8668
8669 let text = "
8670 fn a() {
8671 //b();
8672 // c();
8673 // d();
8674 }
8675 "
8676 .unindent();
8677
8678 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8679 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8680 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8681
8682 view.update(cx, |editor, cx| {
8683 // If multiple selections intersect a line, the line is only
8684 // toggled once.
8685 editor.select_display_ranges(
8686 &[
8687 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8688 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8689 ],
8690 cx,
8691 );
8692 editor.toggle_comments(&ToggleComments, cx);
8693 assert_eq!(
8694 editor.text(cx),
8695 "
8696 fn a() {
8697 b();
8698 c();
8699 d();
8700 }
8701 "
8702 .unindent()
8703 );
8704
8705 // The comment prefix is inserted at the same column for every line
8706 // in a selection.
8707 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8708 editor.toggle_comments(&ToggleComments, cx);
8709 assert_eq!(
8710 editor.text(cx),
8711 "
8712 fn a() {
8713 // b();
8714 // c();
8715 // d();
8716 }
8717 "
8718 .unindent()
8719 );
8720
8721 // If a selection ends at the beginning of a line, that line is not toggled.
8722 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8723 editor.toggle_comments(&ToggleComments, cx);
8724 assert_eq!(
8725 editor.text(cx),
8726 "
8727 fn a() {
8728 // b();
8729 c();
8730 // d();
8731 }
8732 "
8733 .unindent()
8734 );
8735 });
8736 }
8737
8738 #[gpui::test]
8739 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8740 populate_settings(cx);
8741 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8742 let multibuffer = cx.add_model(|cx| {
8743 let mut multibuffer = MultiBuffer::new(0);
8744 multibuffer.push_excerpts(
8745 buffer.clone(),
8746 [
8747 Point::new(0, 0)..Point::new(0, 4),
8748 Point::new(1, 0)..Point::new(1, 4),
8749 ],
8750 cx,
8751 );
8752 multibuffer
8753 });
8754
8755 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8756
8757 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8758 view.update(cx, |view, cx| {
8759 assert_eq!(view.text(cx), "aaaa\nbbbb");
8760 view.select_ranges(
8761 [
8762 Point::new(0, 0)..Point::new(0, 0),
8763 Point::new(1, 0)..Point::new(1, 0),
8764 ],
8765 None,
8766 cx,
8767 );
8768
8769 view.handle_input(&Input("X".to_string()), cx);
8770 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8771 assert_eq!(
8772 view.selected_ranges(cx),
8773 [
8774 Point::new(0, 1)..Point::new(0, 1),
8775 Point::new(1, 1)..Point::new(1, 1),
8776 ]
8777 )
8778 });
8779 }
8780
8781 #[gpui::test]
8782 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8783 populate_settings(cx);
8784 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8785 let multibuffer = cx.add_model(|cx| {
8786 let mut multibuffer = MultiBuffer::new(0);
8787 multibuffer.push_excerpts(
8788 buffer,
8789 [
8790 Point::new(0, 0)..Point::new(1, 4),
8791 Point::new(1, 0)..Point::new(2, 4),
8792 ],
8793 cx,
8794 );
8795 multibuffer
8796 });
8797
8798 assert_eq!(
8799 multibuffer.read(cx).read(cx).text(),
8800 "aaaa\nbbbb\nbbbb\ncccc"
8801 );
8802
8803 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8804 view.update(cx, |view, cx| {
8805 view.select_ranges(
8806 [
8807 Point::new(1, 1)..Point::new(1, 1),
8808 Point::new(2, 3)..Point::new(2, 3),
8809 ],
8810 None,
8811 cx,
8812 );
8813
8814 view.handle_input(&Input("X".to_string()), cx);
8815 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8816 assert_eq!(
8817 view.selected_ranges(cx),
8818 [
8819 Point::new(1, 2)..Point::new(1, 2),
8820 Point::new(2, 5)..Point::new(2, 5),
8821 ]
8822 );
8823
8824 view.newline(&Newline, cx);
8825 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8826 assert_eq!(
8827 view.selected_ranges(cx),
8828 [
8829 Point::new(2, 0)..Point::new(2, 0),
8830 Point::new(6, 0)..Point::new(6, 0),
8831 ]
8832 );
8833 });
8834 }
8835
8836 #[gpui::test]
8837 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8838 populate_settings(cx);
8839 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8840 let mut excerpt1_id = None;
8841 let multibuffer = cx.add_model(|cx| {
8842 let mut multibuffer = MultiBuffer::new(0);
8843 excerpt1_id = multibuffer
8844 .push_excerpts(
8845 buffer.clone(),
8846 [
8847 Point::new(0, 0)..Point::new(1, 4),
8848 Point::new(1, 0)..Point::new(2, 4),
8849 ],
8850 cx,
8851 )
8852 .into_iter()
8853 .next();
8854 multibuffer
8855 });
8856 assert_eq!(
8857 multibuffer.read(cx).read(cx).text(),
8858 "aaaa\nbbbb\nbbbb\ncccc"
8859 );
8860 let (_, editor) = cx.add_window(Default::default(), |cx| {
8861 let mut editor = build_editor(multibuffer.clone(), cx);
8862 let snapshot = editor.snapshot(cx);
8863 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
8864 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
8865 assert_eq!(
8866 editor.selected_ranges(cx),
8867 [
8868 Point::new(1, 3)..Point::new(1, 3),
8869 Point::new(2, 1)..Point::new(2, 1),
8870 ]
8871 );
8872 editor
8873 });
8874
8875 // Refreshing selections is a no-op when excerpts haven't changed.
8876 editor.update(cx, |editor, cx| {
8877 editor.refresh_selections(cx);
8878 assert_eq!(
8879 editor.selected_ranges(cx),
8880 [
8881 Point::new(1, 3)..Point::new(1, 3),
8882 Point::new(2, 1)..Point::new(2, 1),
8883 ]
8884 );
8885 });
8886
8887 multibuffer.update(cx, |multibuffer, cx| {
8888 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8889 });
8890 editor.update(cx, |editor, cx| {
8891 // Removing an excerpt causes the first selection to become degenerate.
8892 assert_eq!(
8893 editor.selected_ranges(cx),
8894 [
8895 Point::new(0, 0)..Point::new(0, 0),
8896 Point::new(0, 1)..Point::new(0, 1)
8897 ]
8898 );
8899
8900 // Refreshing selections will relocate the first selection to the original buffer
8901 // location.
8902 editor.refresh_selections(cx);
8903 assert_eq!(
8904 editor.selected_ranges(cx),
8905 [
8906 Point::new(0, 1)..Point::new(0, 1),
8907 Point::new(0, 3)..Point::new(0, 3)
8908 ]
8909 );
8910 assert!(editor.pending_selection.is_some());
8911 });
8912 }
8913
8914 #[gpui::test]
8915 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
8916 populate_settings(cx);
8917 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8918 let mut excerpt1_id = None;
8919 let multibuffer = cx.add_model(|cx| {
8920 let mut multibuffer = MultiBuffer::new(0);
8921 excerpt1_id = multibuffer
8922 .push_excerpts(
8923 buffer.clone(),
8924 [
8925 Point::new(0, 0)..Point::new(1, 4),
8926 Point::new(1, 0)..Point::new(2, 4),
8927 ],
8928 cx,
8929 )
8930 .into_iter()
8931 .next();
8932 multibuffer
8933 });
8934 assert_eq!(
8935 multibuffer.read(cx).read(cx).text(),
8936 "aaaa\nbbbb\nbbbb\ncccc"
8937 );
8938 let (_, editor) = cx.add_window(Default::default(), |cx| {
8939 let mut editor = build_editor(multibuffer.clone(), cx);
8940 let snapshot = editor.snapshot(cx);
8941 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
8942 assert_eq!(
8943 editor.selected_ranges(cx),
8944 [Point::new(1, 3)..Point::new(1, 3)]
8945 );
8946 editor
8947 });
8948
8949 multibuffer.update(cx, |multibuffer, cx| {
8950 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8951 });
8952 editor.update(cx, |editor, cx| {
8953 assert_eq!(
8954 editor.selected_ranges(cx),
8955 [Point::new(0, 0)..Point::new(0, 0)]
8956 );
8957
8958 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
8959 editor.refresh_selections(cx);
8960 assert_eq!(
8961 editor.selected_ranges(cx),
8962 [Point::new(0, 3)..Point::new(0, 3)]
8963 );
8964 assert!(editor.pending_selection.is_some());
8965 });
8966 }
8967
8968 #[gpui::test]
8969 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8970 cx.update(populate_settings);
8971 let language = Arc::new(Language::new(
8972 LanguageConfig {
8973 brackets: vec![
8974 BracketPair {
8975 start: "{".to_string(),
8976 end: "}".to_string(),
8977 close: true,
8978 newline: true,
8979 },
8980 BracketPair {
8981 start: "/* ".to_string(),
8982 end: " */".to_string(),
8983 close: true,
8984 newline: true,
8985 },
8986 ],
8987 ..Default::default()
8988 },
8989 Some(tree_sitter_rust::language()),
8990 ));
8991
8992 let text = concat!(
8993 "{ }\n", // Suppress rustfmt
8994 " x\n", //
8995 " /* */\n", //
8996 "x\n", //
8997 "{{} }\n", //
8998 );
8999
9000 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9001 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9002 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9003 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9004 .await;
9005
9006 view.update(cx, |view, cx| {
9007 view.select_display_ranges(
9008 &[
9009 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9010 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9011 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9012 ],
9013 cx,
9014 );
9015 view.newline(&Newline, cx);
9016
9017 assert_eq!(
9018 view.buffer().read(cx).read(cx).text(),
9019 concat!(
9020 "{ \n", // Suppress rustfmt
9021 "\n", //
9022 "}\n", //
9023 " x\n", //
9024 " /* \n", //
9025 " \n", //
9026 " */\n", //
9027 "x\n", //
9028 "{{} \n", //
9029 "}\n", //
9030 )
9031 );
9032 });
9033 }
9034
9035 #[gpui::test]
9036 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9037 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9038 populate_settings(cx);
9039 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9040
9041 editor.update(cx, |editor, cx| {
9042 struct Type1;
9043 struct Type2;
9044
9045 let buffer = buffer.read(cx).snapshot(cx);
9046
9047 let anchor_range = |range: Range<Point>| {
9048 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9049 };
9050
9051 editor.highlight_background::<Type1>(
9052 vec![
9053 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9054 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9055 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9056 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9057 ],
9058 Color::red(),
9059 cx,
9060 );
9061 editor.highlight_background::<Type2>(
9062 vec![
9063 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9064 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9065 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9066 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9067 ],
9068 Color::green(),
9069 cx,
9070 );
9071
9072 let snapshot = editor.snapshot(cx);
9073 let mut highlighted_ranges = editor.background_highlights_in_range(
9074 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9075 &snapshot,
9076 );
9077 // Enforce a consistent ordering based on color without relying on the ordering of the
9078 // highlight's `TypeId` which is non-deterministic.
9079 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9080 assert_eq!(
9081 highlighted_ranges,
9082 &[
9083 (
9084 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9085 Color::green(),
9086 ),
9087 (
9088 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9089 Color::green(),
9090 ),
9091 (
9092 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9093 Color::red(),
9094 ),
9095 (
9096 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9097 Color::red(),
9098 ),
9099 ]
9100 );
9101 assert_eq!(
9102 editor.background_highlights_in_range(
9103 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9104 &snapshot,
9105 ),
9106 &[(
9107 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9108 Color::red(),
9109 )]
9110 );
9111 });
9112 }
9113
9114 #[gpui::test]
9115 fn test_following(cx: &mut gpui::MutableAppContext) {
9116 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9117 populate_settings(cx);
9118
9119 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9120 let (_, follower) = cx.add_window(
9121 WindowOptions {
9122 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9123 ..Default::default()
9124 },
9125 |cx| build_editor(buffer.clone(), cx),
9126 );
9127
9128 let pending_update = Rc::new(RefCell::new(None));
9129 follower.update(cx, {
9130 let update = pending_update.clone();
9131 |_, cx| {
9132 cx.subscribe(&leader, move |_, leader, event, cx| {
9133 leader
9134 .read(cx)
9135 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9136 })
9137 .detach();
9138 }
9139 });
9140
9141 // Update the selections only
9142 leader.update(cx, |leader, cx| {
9143 leader.select_ranges([1..1], None, cx);
9144 });
9145 follower.update(cx, |follower, cx| {
9146 follower
9147 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9148 .unwrap();
9149 });
9150 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9151
9152 // Update the scroll position only
9153 leader.update(cx, |leader, cx| {
9154 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9155 });
9156 follower.update(cx, |follower, cx| {
9157 follower
9158 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9159 .unwrap();
9160 });
9161 assert_eq!(
9162 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9163 vec2f(1.5, 3.5)
9164 );
9165
9166 // Update the selections and scroll position
9167 leader.update(cx, |leader, cx| {
9168 leader.select_ranges([0..0], None, cx);
9169 leader.request_autoscroll(Autoscroll::Newest, cx);
9170 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9171 });
9172 follower.update(cx, |follower, cx| {
9173 let initial_scroll_position = follower.scroll_position(cx);
9174 follower
9175 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9176 .unwrap();
9177 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9178 assert!(follower.autoscroll_request.is_some());
9179 });
9180 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9181
9182 // Creating a pending selection that precedes another selection
9183 leader.update(cx, |leader, cx| {
9184 leader.select_ranges([1..1], None, cx);
9185 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9186 });
9187 follower.update(cx, |follower, cx| {
9188 follower
9189 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9190 .unwrap();
9191 });
9192 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9193
9194 // Extend the pending selection so that it surrounds another selection
9195 leader.update(cx, |leader, cx| {
9196 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9197 });
9198 follower.update(cx, |follower, cx| {
9199 follower
9200 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9201 .unwrap();
9202 });
9203 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9204 }
9205
9206 #[test]
9207 fn test_combine_syntax_and_fuzzy_match_highlights() {
9208 let string = "abcdefghijklmnop";
9209 let syntax_ranges = [
9210 (
9211 0..3,
9212 HighlightStyle {
9213 color: Some(Color::red()),
9214 ..Default::default()
9215 },
9216 ),
9217 (
9218 4..8,
9219 HighlightStyle {
9220 color: Some(Color::green()),
9221 ..Default::default()
9222 },
9223 ),
9224 ];
9225 let match_indices = [4, 6, 7, 8];
9226 assert_eq!(
9227 combine_syntax_and_fuzzy_match_highlights(
9228 &string,
9229 Default::default(),
9230 syntax_ranges.into_iter(),
9231 &match_indices,
9232 ),
9233 &[
9234 (
9235 0..3,
9236 HighlightStyle {
9237 color: Some(Color::red()),
9238 ..Default::default()
9239 },
9240 ),
9241 (
9242 4..5,
9243 HighlightStyle {
9244 color: Some(Color::green()),
9245 weight: Some(fonts::Weight::BOLD),
9246 ..Default::default()
9247 },
9248 ),
9249 (
9250 5..6,
9251 HighlightStyle {
9252 color: Some(Color::green()),
9253 ..Default::default()
9254 },
9255 ),
9256 (
9257 6..8,
9258 HighlightStyle {
9259 color: Some(Color::green()),
9260 weight: Some(fonts::Weight::BOLD),
9261 ..Default::default()
9262 },
9263 ),
9264 (
9265 8..9,
9266 HighlightStyle {
9267 weight: Some(fonts::Weight::BOLD),
9268 ..Default::default()
9269 },
9270 ),
9271 ]
9272 );
9273 }
9274
9275 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9276 let point = DisplayPoint::new(row as u32, column as u32);
9277 point..point
9278 }
9279
9280 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9281 Editor::new(EditorMode::Full, buffer, None, None, cx)
9282 }
9283
9284 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9285 let settings = Settings::test(cx);
9286 cx.set_global(settings);
9287 }
9288
9289 fn assert_selection_ranges(
9290 marked_text: &str,
9291 selection_marker_pairs: Vec<(char, char)>,
9292 view: &mut Editor,
9293 cx: &mut ViewContext<Editor>,
9294 ) {
9295 let snapshot = view.snapshot(cx).display_snapshot;
9296 let mut marker_chars = Vec::new();
9297 for (start, end) in selection_marker_pairs.iter() {
9298 marker_chars.push(*start);
9299 marker_chars.push(*end);
9300 }
9301 let (_, markers) = marked_text_by(marked_text, marker_chars);
9302 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9303 .iter()
9304 .map(|(start, end)| {
9305 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9306 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9307 start..end
9308 })
9309 .collect();
9310 assert_eq!(
9311 view.selected_display_ranges(cx),
9312 &asserted_ranges[..],
9313 "Assert selections are {}",
9314 marked_text
9315 );
9316 }
9317}
9318
9319trait RangeExt<T> {
9320 fn sorted(&self) -> Range<T>;
9321 fn to_inclusive(&self) -> RangeInclusive<T>;
9322}
9323
9324impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9325 fn sorted(&self) -> Self {
9326 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9327 }
9328
9329 fn to_inclusive(&self) -> RangeInclusive<T> {
9330 self.start.clone()..=self.end.clone()
9331 }
9332}