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.transact(cx, |this, cx| {
1748 if !this.surround_with_bracket_pair(text, cx) {
1749 this.insert(text, cx);
1750 this.autoclose_bracket_pairs(cx);
1751 }
1752 });
1753 self.trigger_completion_on_input(text, cx);
1754 }
1755 }
1756
1757 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1758 self.transact(cx, |this, cx| {
1759 let mut old_selections = SmallVec::<[_; 32]>::new();
1760 {
1761 let selections = this.local_selections::<usize>(cx);
1762 let buffer = this.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)
1793 .saturating_sub(pair_start.len()),
1794 pair_start,
1795 )
1796 });
1797 }
1798
1799 old_selections.push((
1800 selection.id,
1801 buffer.anchor_after(end),
1802 start..end,
1803 indent,
1804 insert_extra_newline,
1805 ));
1806 }
1807 }
1808
1809 this.buffer.update(cx, |buffer, cx| {
1810 let mut delta = 0_isize;
1811 let mut pending_edit: Option<PendingEdit> = None;
1812 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1813 if pending_edit.as_ref().map_or(false, |pending| {
1814 pending.indent != *indent
1815 || pending.insert_extra_newline != *insert_extra_newline
1816 }) {
1817 let pending = pending_edit.take().unwrap();
1818 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1819 new_text.push('\n');
1820 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1821 if pending.insert_extra_newline {
1822 new_text = new_text.repeat(2);
1823 }
1824 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1825 delta += pending.delta;
1826 }
1827
1828 let start = (range.start as isize + delta) as usize;
1829 let end = (range.end as isize + delta) as usize;
1830 let mut text_len = *indent as usize + 1;
1831 if *insert_extra_newline {
1832 text_len *= 2;
1833 }
1834
1835 let pending = pending_edit.get_or_insert_with(Default::default);
1836 pending.delta += text_len as isize - (end - start) as isize;
1837 pending.indent = *indent;
1838 pending.insert_extra_newline = *insert_extra_newline;
1839 pending.ranges.push(start..end);
1840 }
1841
1842 let pending = pending_edit.unwrap();
1843 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1844 new_text.push('\n');
1845 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1846 if pending.insert_extra_newline {
1847 new_text = new_text.repeat(2);
1848 }
1849 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1850
1851 let buffer = buffer.read(cx);
1852 this.selections = this
1853 .selections
1854 .iter()
1855 .cloned()
1856 .zip(old_selections)
1857 .map(
1858 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1859 let mut cursor = end_anchor.to_point(&buffer);
1860 if insert_extra_newline {
1861 cursor.row -= 1;
1862 cursor.column = buffer.line_len(cursor.row);
1863 }
1864 let anchor = buffer.anchor_after(cursor);
1865 new_selection.start = anchor.clone();
1866 new_selection.end = anchor;
1867 new_selection
1868 },
1869 )
1870 .collect();
1871 });
1872
1873 this.request_autoscroll(Autoscroll::Fit, cx);
1874 });
1875
1876 #[derive(Default)]
1877 struct PendingEdit {
1878 indent: u32,
1879 insert_extra_newline: bool,
1880 delta: isize,
1881 ranges: SmallVec<[Range<usize>; 32]>,
1882 }
1883 }
1884
1885 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1886 self.transact(cx, |this, cx| {
1887 let old_selections = this.local_selections::<usize>(cx);
1888 let selection_anchors = this.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 = this.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 this.update_selections(selections, Some(Autoscroll::Fit), cx);
1918 });
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.transact(cx, |this, 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 this.insert_snippet(&ranges, snippet, cx).log_err();
2296 } else {
2297 this.buffer.update(cx, |buffer, cx| {
2298 buffer.edit_with_autoindent(ranges, text, cx);
2299 });
2300 }
2301 });
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 code action'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 excerpt_id = cursor_position.excerpt_id.clone();
2523 let style = this.style(cx);
2524 let read_background = style.document_highlight_read_background;
2525 let write_background = style.document_highlight_write_background;
2526 let buffer = this.buffer.read(cx);
2527 if !buffer
2528 .text_anchor_for_position(cursor_position, cx)
2529 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2530 {
2531 return;
2532 }
2533
2534 let mut write_ranges = Vec::new();
2535 let mut read_ranges = Vec::new();
2536 for highlight in highlights {
2537 let range = Anchor {
2538 buffer_id,
2539 excerpt_id: excerpt_id.clone(),
2540 text_anchor: highlight.range.start,
2541 }..Anchor {
2542 buffer_id,
2543 excerpt_id: excerpt_id.clone(),
2544 text_anchor: highlight.range.end,
2545 };
2546 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2547 write_ranges.push(range);
2548 } else {
2549 read_ranges.push(range);
2550 }
2551 }
2552
2553 this.highlight_background::<DocumentHighlightRead>(
2554 read_ranges,
2555 read_background,
2556 cx,
2557 );
2558 this.highlight_background::<DocumentHighlightWrite>(
2559 write_ranges,
2560 write_background,
2561 cx,
2562 );
2563 cx.notify();
2564 });
2565 }
2566 }));
2567 None
2568 }
2569
2570 pub fn render_code_actions_indicator(
2571 &self,
2572 style: &EditorStyle,
2573 cx: &mut ViewContext<Self>,
2574 ) -> Option<ElementBox> {
2575 if self.available_code_actions.is_some() {
2576 enum Tag {}
2577 Some(
2578 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2579 Svg::new("icons/zap.svg")
2580 .with_color(style.code_actions_indicator)
2581 .boxed()
2582 })
2583 .with_cursor_style(CursorStyle::PointingHand)
2584 .with_padding(Padding::uniform(3.))
2585 .on_mouse_down(|cx| {
2586 cx.dispatch_action(ToggleCodeActions(true));
2587 })
2588 .boxed(),
2589 )
2590 } else {
2591 None
2592 }
2593 }
2594
2595 pub fn context_menu_visible(&self) -> bool {
2596 self.context_menu
2597 .as_ref()
2598 .map_or(false, |menu| menu.visible())
2599 }
2600
2601 pub fn render_context_menu(
2602 &self,
2603 cursor_position: DisplayPoint,
2604 style: EditorStyle,
2605 cx: &AppContext,
2606 ) -> Option<(DisplayPoint, ElementBox)> {
2607 self.context_menu
2608 .as_ref()
2609 .map(|menu| menu.render(cursor_position, style, cx))
2610 }
2611
2612 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2613 if !matches!(menu, ContextMenu::Completions(_)) {
2614 self.completion_tasks.clear();
2615 }
2616 self.context_menu = Some(menu);
2617 cx.notify();
2618 }
2619
2620 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2621 cx.notify();
2622 self.completion_tasks.clear();
2623 self.context_menu.take()
2624 }
2625
2626 pub fn insert_snippet(
2627 &mut self,
2628 insertion_ranges: &[Range<usize>],
2629 snippet: Snippet,
2630 cx: &mut ViewContext<Self>,
2631 ) -> Result<()> {
2632 let tabstops = self.buffer.update(cx, |buffer, cx| {
2633 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2634
2635 let snapshot = &*buffer.read(cx);
2636 let snippet = &snippet;
2637 snippet
2638 .tabstops
2639 .iter()
2640 .map(|tabstop| {
2641 let mut tabstop_ranges = tabstop
2642 .iter()
2643 .flat_map(|tabstop_range| {
2644 let mut delta = 0 as isize;
2645 insertion_ranges.iter().map(move |insertion_range| {
2646 let insertion_start = insertion_range.start as isize + delta;
2647 delta +=
2648 snippet.text.len() as isize - insertion_range.len() as isize;
2649
2650 let start = snapshot.anchor_before(
2651 (insertion_start + tabstop_range.start) as usize,
2652 );
2653 let end = snapshot
2654 .anchor_after((insertion_start + tabstop_range.end) as usize);
2655 start..end
2656 })
2657 })
2658 .collect::<Vec<_>>();
2659 tabstop_ranges
2660 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2661 tabstop_ranges
2662 })
2663 .collect::<Vec<_>>()
2664 });
2665
2666 if let Some(tabstop) = tabstops.first() {
2667 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2668 self.snippet_stack.push(SnippetState {
2669 active_index: 0,
2670 ranges: tabstops,
2671 });
2672 }
2673
2674 Ok(())
2675 }
2676
2677 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2678 self.move_to_snippet_tabstop(Bias::Right, cx)
2679 }
2680
2681 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2682 self.move_to_snippet_tabstop(Bias::Left, cx);
2683 }
2684
2685 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2686 let buffer = self.buffer.read(cx).snapshot(cx);
2687
2688 if let Some(snippet) = self.snippet_stack.last_mut() {
2689 match bias {
2690 Bias::Left => {
2691 if snippet.active_index > 0 {
2692 snippet.active_index -= 1;
2693 } else {
2694 return false;
2695 }
2696 }
2697 Bias::Right => {
2698 if snippet.active_index + 1 < snippet.ranges.len() {
2699 snippet.active_index += 1;
2700 } else {
2701 return false;
2702 }
2703 }
2704 }
2705 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2706 let new_selections = current_ranges
2707 .iter()
2708 .map(|new_range| {
2709 let new_range = new_range.to_offset(&buffer);
2710 Selection {
2711 id: post_inc(&mut self.next_selection_id),
2712 start: new_range.start,
2713 end: new_range.end,
2714 reversed: false,
2715 goal: SelectionGoal::None,
2716 }
2717 })
2718 .collect();
2719
2720 // Remove the snippet state when moving to the last tabstop.
2721 if snippet.active_index + 1 == snippet.ranges.len() {
2722 self.snippet_stack.pop();
2723 }
2724
2725 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2726 return true;
2727 }
2728 self.snippet_stack.pop();
2729 }
2730
2731 false
2732 }
2733
2734 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2735 self.transact(cx, |this, cx| {
2736 this.select_all(&SelectAll, cx);
2737 this.insert("", cx);
2738 });
2739 }
2740
2741 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2742 let mut selections = self.local_selections::<Point>(cx);
2743 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2744 for selection in &mut selections {
2745 if selection.is_empty() {
2746 let old_head = selection.head();
2747 let mut new_head =
2748 movement::left(&display_map, old_head.to_display_point(&display_map))
2749 .to_point(&display_map);
2750 if let Some((buffer, line_buffer_range)) = display_map
2751 .buffer_snapshot
2752 .buffer_line_for_row(old_head.row)
2753 {
2754 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2755 if old_head.column <= indent_column && old_head.column > 0 {
2756 let indent = buffer.indent_size();
2757 new_head = cmp::min(
2758 new_head,
2759 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2760 );
2761 }
2762 }
2763
2764 selection.set_head(new_head, SelectionGoal::None);
2765 }
2766 }
2767
2768 self.transact(cx, |this, cx| {
2769 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2770 this.insert("", cx);
2771 });
2772 }
2773
2774 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2775 self.transact(cx, |this, cx| {
2776 this.move_selections(cx, |map, selection| {
2777 if selection.is_empty() {
2778 let cursor = movement::right(map, selection.head());
2779 selection.set_head(cursor, SelectionGoal::None);
2780 }
2781 });
2782 this.insert(&"", cx);
2783 });
2784 }
2785
2786 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2787 if self.move_to_next_snippet_tabstop(cx) {
2788 return;
2789 }
2790
2791 let tab_size = cx.global::<Settings>().tab_size;
2792 let mut selections = self.local_selections::<Point>(cx);
2793 self.transact(cx, |this, cx| {
2794 let mut last_indent = None;
2795 this.buffer.update(cx, |buffer, cx| {
2796 for selection in &mut selections {
2797 if selection.is_empty() {
2798 let char_column = buffer
2799 .read(cx)
2800 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2801 .flat_map(str::chars)
2802 .count();
2803 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2804 buffer.edit(
2805 [selection.start..selection.start],
2806 " ".repeat(chars_to_next_tab_stop),
2807 cx,
2808 );
2809 selection.start.column += chars_to_next_tab_stop as u32;
2810 selection.end = selection.start;
2811 } else {
2812 let mut start_row = selection.start.row;
2813 let mut end_row = selection.end.row + 1;
2814
2815 // If a selection ends at the beginning of a line, don't indent
2816 // that last line.
2817 if selection.end.column == 0 {
2818 end_row -= 1;
2819 }
2820
2821 // Avoid re-indenting a row that has already been indented by a
2822 // previous selection, but still update this selection's column
2823 // to reflect that indentation.
2824 if let Some((last_indent_row, last_indent_len)) = last_indent {
2825 if last_indent_row == selection.start.row {
2826 selection.start.column += last_indent_len;
2827 start_row += 1;
2828 }
2829 if last_indent_row == selection.end.row {
2830 selection.end.column += last_indent_len;
2831 }
2832 }
2833
2834 for row in start_row..end_row {
2835 let indent_column =
2836 buffer.read(cx).indent_column_for_line(row) as usize;
2837 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2838 let row_start = Point::new(row, 0);
2839 buffer.edit(
2840 [row_start..row_start],
2841 " ".repeat(columns_to_next_tab_stop),
2842 cx,
2843 );
2844
2845 // Update this selection's endpoints to reflect the indentation.
2846 if row == selection.start.row {
2847 selection.start.column += columns_to_next_tab_stop as u32;
2848 }
2849 if row == selection.end.row {
2850 selection.end.column += columns_to_next_tab_stop as u32;
2851 }
2852
2853 last_indent = Some((row, columns_to_next_tab_stop as u32));
2854 }
2855 }
2856 }
2857 });
2858
2859 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2860 });
2861 }
2862
2863 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2864 if !self.snippet_stack.is_empty() {
2865 self.move_to_prev_snippet_tabstop(cx);
2866 return;
2867 }
2868
2869 let tab_size = cx.global::<Settings>().tab_size;
2870 let selections = self.local_selections::<Point>(cx);
2871 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2872 let mut deletion_ranges = Vec::new();
2873 let mut last_outdent = None;
2874 {
2875 let buffer = self.buffer.read(cx).read(cx);
2876 for selection in &selections {
2877 let mut rows = selection.spanned_rows(false, &display_map);
2878
2879 // Avoid re-outdenting a row that has already been outdented by a
2880 // previous selection.
2881 if let Some(last_row) = last_outdent {
2882 if last_row == rows.start {
2883 rows.start += 1;
2884 }
2885 }
2886
2887 for row in rows {
2888 let column = buffer.indent_column_for_line(row) as usize;
2889 if column > 0 {
2890 let mut deletion_len = (column % tab_size) as u32;
2891 if deletion_len == 0 {
2892 deletion_len = tab_size as u32;
2893 }
2894 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2895 last_outdent = Some(row);
2896 }
2897 }
2898 }
2899 }
2900
2901 self.transact(cx, |this, cx| {
2902 this.buffer.update(cx, |buffer, cx| {
2903 buffer.edit(deletion_ranges, "", cx);
2904 });
2905 this.update_selections(
2906 this.local_selections::<usize>(cx),
2907 Some(Autoscroll::Fit),
2908 cx,
2909 );
2910 });
2911 }
2912
2913 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2914 let selections = self.local_selections::<Point>(cx);
2915 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2916 let buffer = self.buffer.read(cx).snapshot(cx);
2917
2918 let mut new_cursors = Vec::new();
2919 let mut edit_ranges = Vec::new();
2920 let mut selections = selections.iter().peekable();
2921 while let Some(selection) = selections.next() {
2922 let mut rows = selection.spanned_rows(false, &display_map);
2923 let goal_display_column = selection.head().to_display_point(&display_map).column();
2924
2925 // Accumulate contiguous regions of rows that we want to delete.
2926 while let Some(next_selection) = selections.peek() {
2927 let next_rows = next_selection.spanned_rows(false, &display_map);
2928 if next_rows.start <= rows.end {
2929 rows.end = next_rows.end;
2930 selections.next().unwrap();
2931 } else {
2932 break;
2933 }
2934 }
2935
2936 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2937 let edit_end;
2938 let cursor_buffer_row;
2939 if buffer.max_point().row >= rows.end {
2940 // If there's a line after the range, delete the \n from the end of the row range
2941 // and position the cursor on the next line.
2942 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2943 cursor_buffer_row = rows.end;
2944 } else {
2945 // If there isn't a line after the range, delete the \n from the line before the
2946 // start of the row range and position the cursor there.
2947 edit_start = edit_start.saturating_sub(1);
2948 edit_end = buffer.len();
2949 cursor_buffer_row = rows.start.saturating_sub(1);
2950 }
2951
2952 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2953 *cursor.column_mut() =
2954 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2955
2956 new_cursors.push((
2957 selection.id,
2958 buffer.anchor_after(cursor.to_point(&display_map)),
2959 ));
2960 edit_ranges.push(edit_start..edit_end);
2961 }
2962
2963 self.transact(cx, |this, cx| {
2964 let buffer = this.buffer.update(cx, |buffer, cx| {
2965 buffer.edit(edit_ranges, "", cx);
2966 buffer.snapshot(cx)
2967 });
2968 let new_selections = new_cursors
2969 .into_iter()
2970 .map(|(id, cursor)| {
2971 let cursor = cursor.to_point(&buffer);
2972 Selection {
2973 id,
2974 start: cursor,
2975 end: cursor,
2976 reversed: false,
2977 goal: SelectionGoal::None,
2978 }
2979 })
2980 .collect();
2981 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2982 });
2983 }
2984
2985 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2986 let selections = self.local_selections::<Point>(cx);
2987 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2988 let buffer = &display_map.buffer_snapshot;
2989
2990 let mut edits = Vec::new();
2991 let mut selections_iter = selections.iter().peekable();
2992 while let Some(selection) = selections_iter.next() {
2993 // Avoid duplicating the same lines twice.
2994 let mut rows = selection.spanned_rows(false, &display_map);
2995
2996 while let Some(next_selection) = selections_iter.peek() {
2997 let next_rows = next_selection.spanned_rows(false, &display_map);
2998 if next_rows.start <= rows.end - 1 {
2999 rows.end = next_rows.end;
3000 selections_iter.next().unwrap();
3001 } else {
3002 break;
3003 }
3004 }
3005
3006 // Copy the text from the selected row region and splice it at the start of the region.
3007 let start = Point::new(rows.start, 0);
3008 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3009 let text = buffer
3010 .text_for_range(start..end)
3011 .chain(Some("\n"))
3012 .collect::<String>();
3013 edits.push((start, text, rows.len() as u32));
3014 }
3015
3016 self.transact(cx, |this, cx| {
3017 this.buffer.update(cx, |buffer, cx| {
3018 for (point, text, _) in edits.into_iter().rev() {
3019 buffer.edit(Some(point..point), text, cx);
3020 }
3021 });
3022
3023 this.request_autoscroll(Autoscroll::Fit, cx);
3024 });
3025 }
3026
3027 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3028 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3029 let buffer = self.buffer.read(cx).snapshot(cx);
3030
3031 let mut edits = Vec::new();
3032 let mut unfold_ranges = Vec::new();
3033 let mut refold_ranges = Vec::new();
3034
3035 let selections = self.local_selections::<Point>(cx);
3036 let mut selections = selections.iter().peekable();
3037 let mut contiguous_row_selections = Vec::new();
3038 let mut new_selections = Vec::new();
3039
3040 while let Some(selection) = selections.next() {
3041 // Find all the selections that span a contiguous row range
3042 contiguous_row_selections.push(selection.clone());
3043 let start_row = selection.start.row;
3044 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3045 display_map.next_line_boundary(selection.end).0.row + 1
3046 } else {
3047 selection.end.row
3048 };
3049
3050 while let Some(next_selection) = selections.peek() {
3051 if next_selection.start.row <= end_row {
3052 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3053 display_map.next_line_boundary(next_selection.end).0.row + 1
3054 } else {
3055 next_selection.end.row
3056 };
3057 contiguous_row_selections.push(selections.next().unwrap().clone());
3058 } else {
3059 break;
3060 }
3061 }
3062
3063 // Move the text spanned by the row range to be before the line preceding the row range
3064 if start_row > 0 {
3065 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3066 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3067 let insertion_point = display_map
3068 .prev_line_boundary(Point::new(start_row - 1, 0))
3069 .0;
3070
3071 // Don't move lines across excerpts
3072 if buffer
3073 .excerpt_boundaries_in_range((
3074 Bound::Excluded(insertion_point),
3075 Bound::Included(range_to_move.end),
3076 ))
3077 .next()
3078 .is_none()
3079 {
3080 let text = buffer
3081 .text_for_range(range_to_move.clone())
3082 .flat_map(|s| s.chars())
3083 .skip(1)
3084 .chain(['\n'])
3085 .collect::<String>();
3086
3087 edits.push((
3088 buffer.anchor_after(range_to_move.start)
3089 ..buffer.anchor_before(range_to_move.end),
3090 String::new(),
3091 ));
3092 let insertion_anchor = buffer.anchor_after(insertion_point);
3093 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3094
3095 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3096
3097 // Move selections up
3098 new_selections.extend(contiguous_row_selections.drain(..).map(
3099 |mut selection| {
3100 selection.start.row -= row_delta;
3101 selection.end.row -= row_delta;
3102 selection
3103 },
3104 ));
3105
3106 // Move folds up
3107 unfold_ranges.push(range_to_move.clone());
3108 for fold in display_map.folds_in_range(
3109 buffer.anchor_before(range_to_move.start)
3110 ..buffer.anchor_after(range_to_move.end),
3111 ) {
3112 let mut start = fold.start.to_point(&buffer);
3113 let mut end = fold.end.to_point(&buffer);
3114 start.row -= row_delta;
3115 end.row -= row_delta;
3116 refold_ranges.push(start..end);
3117 }
3118 }
3119 }
3120
3121 // If we didn't move line(s), preserve the existing selections
3122 new_selections.extend(contiguous_row_selections.drain(..));
3123 }
3124
3125 self.transact(cx, |this, cx| {
3126 this.unfold_ranges(unfold_ranges, cx);
3127 this.buffer.update(cx, |buffer, cx| {
3128 for (range, text) in edits {
3129 buffer.edit([range], text, cx);
3130 }
3131 });
3132 this.fold_ranges(refold_ranges, cx);
3133 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3134 });
3135 }
3136
3137 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3138 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3139 let buffer = self.buffer.read(cx).snapshot(cx);
3140
3141 let mut edits = Vec::new();
3142 let mut unfold_ranges = Vec::new();
3143 let mut refold_ranges = Vec::new();
3144
3145 let selections = self.local_selections::<Point>(cx);
3146 let mut selections = selections.iter().peekable();
3147 let mut contiguous_row_selections = Vec::new();
3148 let mut new_selections = Vec::new();
3149
3150 while let Some(selection) = selections.next() {
3151 // Find all the selections that span a contiguous row range
3152 contiguous_row_selections.push(selection.clone());
3153 let start_row = selection.start.row;
3154 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3155 display_map.next_line_boundary(selection.end).0.row + 1
3156 } else {
3157 selection.end.row
3158 };
3159
3160 while let Some(next_selection) = selections.peek() {
3161 if next_selection.start.row <= end_row {
3162 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3163 display_map.next_line_boundary(next_selection.end).0.row + 1
3164 } else {
3165 next_selection.end.row
3166 };
3167 contiguous_row_selections.push(selections.next().unwrap().clone());
3168 } else {
3169 break;
3170 }
3171 }
3172
3173 // Move the text spanned by the row range to be after the last line of the row range
3174 if end_row <= buffer.max_point().row {
3175 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3176 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3177
3178 // Don't move lines across excerpt boundaries
3179 if buffer
3180 .excerpt_boundaries_in_range((
3181 Bound::Excluded(range_to_move.start),
3182 Bound::Included(insertion_point),
3183 ))
3184 .next()
3185 .is_none()
3186 {
3187 let mut text = String::from("\n");
3188 text.extend(buffer.text_for_range(range_to_move.clone()));
3189 text.pop(); // Drop trailing newline
3190 edits.push((
3191 buffer.anchor_after(range_to_move.start)
3192 ..buffer.anchor_before(range_to_move.end),
3193 String::new(),
3194 ));
3195 let insertion_anchor = buffer.anchor_after(insertion_point);
3196 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3197
3198 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3199
3200 // Move selections down
3201 new_selections.extend(contiguous_row_selections.drain(..).map(
3202 |mut selection| {
3203 selection.start.row += row_delta;
3204 selection.end.row += row_delta;
3205 selection
3206 },
3207 ));
3208
3209 // Move folds down
3210 unfold_ranges.push(range_to_move.clone());
3211 for fold in display_map.folds_in_range(
3212 buffer.anchor_before(range_to_move.start)
3213 ..buffer.anchor_after(range_to_move.end),
3214 ) {
3215 let mut start = fold.start.to_point(&buffer);
3216 let mut end = fold.end.to_point(&buffer);
3217 start.row += row_delta;
3218 end.row += row_delta;
3219 refold_ranges.push(start..end);
3220 }
3221 }
3222 }
3223
3224 // If we didn't move line(s), preserve the existing selections
3225 new_selections.extend(contiguous_row_selections.drain(..));
3226 }
3227
3228 self.transact(cx, |this, cx| {
3229 this.unfold_ranges(unfold_ranges, cx);
3230 this.buffer.update(cx, |buffer, cx| {
3231 for (range, text) in edits {
3232 buffer.edit([range], text, cx);
3233 }
3234 });
3235 this.fold_ranges(refold_ranges, cx);
3236 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3237 });
3238 }
3239
3240 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3241 let mut text = String::new();
3242 let mut selections = self.local_selections::<Point>(cx);
3243 let mut clipboard_selections = Vec::with_capacity(selections.len());
3244 {
3245 let buffer = self.buffer.read(cx).read(cx);
3246 let max_point = buffer.max_point();
3247 for selection in &mut selections {
3248 let is_entire_line = selection.is_empty();
3249 if is_entire_line {
3250 selection.start = Point::new(selection.start.row, 0);
3251 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3252 selection.goal = SelectionGoal::None;
3253 }
3254 let mut len = 0;
3255 for chunk in buffer.text_for_range(selection.start..selection.end) {
3256 text.push_str(chunk);
3257 len += chunk.len();
3258 }
3259 clipboard_selections.push(ClipboardSelection {
3260 len,
3261 is_entire_line,
3262 });
3263 }
3264 }
3265
3266 self.transact(cx, |this, cx| {
3267 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3268 this.insert("", cx);
3269 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3270 });
3271 }
3272
3273 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3274 let selections = self.local_selections::<Point>(cx);
3275 let mut text = String::new();
3276 let mut clipboard_selections = Vec::with_capacity(selections.len());
3277 {
3278 let buffer = self.buffer.read(cx).read(cx);
3279 let max_point = buffer.max_point();
3280 for selection in selections.iter() {
3281 let mut start = selection.start;
3282 let mut end = selection.end;
3283 let is_entire_line = selection.is_empty();
3284 if is_entire_line {
3285 start = Point::new(start.row, 0);
3286 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3287 }
3288 let mut len = 0;
3289 for chunk in buffer.text_for_range(start..end) {
3290 text.push_str(chunk);
3291 len += chunk.len();
3292 }
3293 clipboard_selections.push(ClipboardSelection {
3294 len,
3295 is_entire_line,
3296 });
3297 }
3298 }
3299
3300 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3301 }
3302
3303 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3304 self.transact(cx, |this, cx| {
3305 if let Some(item) = cx.as_mut().read_from_clipboard() {
3306 let clipboard_text = item.text();
3307 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3308 let mut selections = this.local_selections::<usize>(cx);
3309 let all_selections_were_entire_line =
3310 clipboard_selections.iter().all(|s| s.is_entire_line);
3311 if clipboard_selections.len() != selections.len() {
3312 clipboard_selections.clear();
3313 }
3314
3315 let mut delta = 0_isize;
3316 let mut start_offset = 0;
3317 for (i, selection) in selections.iter_mut().enumerate() {
3318 let to_insert;
3319 let entire_line;
3320 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3321 let end_offset = start_offset + clipboard_selection.len;
3322 to_insert = &clipboard_text[start_offset..end_offset];
3323 entire_line = clipboard_selection.is_entire_line;
3324 start_offset = end_offset
3325 } else {
3326 to_insert = clipboard_text.as_str();
3327 entire_line = all_selections_were_entire_line;
3328 }
3329
3330 selection.start = (selection.start as isize + delta) as usize;
3331 selection.end = (selection.end as isize + delta) as usize;
3332
3333 this.buffer.update(cx, |buffer, cx| {
3334 // If the corresponding selection was empty when this slice of the
3335 // clipboard text was written, then the entire line containing the
3336 // selection was copied. If this selection is also currently empty,
3337 // then paste the line before the current line of the buffer.
3338 let range = if selection.is_empty() && entire_line {
3339 let column =
3340 selection.start.to_point(&buffer.read(cx)).column as usize;
3341 let line_start = selection.start - column;
3342 line_start..line_start
3343 } else {
3344 selection.start..selection.end
3345 };
3346
3347 delta += to_insert.len() as isize - range.len() as isize;
3348 buffer.edit([range], to_insert, cx);
3349 selection.start += to_insert.len();
3350 selection.end = selection.start;
3351 });
3352 }
3353 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3354 } else {
3355 this.insert(clipboard_text, cx);
3356 }
3357 }
3358 });
3359 }
3360
3361 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3362 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3363 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3364 self.set_selections(selections, None, true, cx);
3365 }
3366 self.request_autoscroll(Autoscroll::Fit, cx);
3367 }
3368 }
3369
3370 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3371 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3372 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3373 self.set_selections(selections, None, true, cx);
3374 }
3375 self.request_autoscroll(Autoscroll::Fit, cx);
3376 }
3377 }
3378
3379 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3380 self.buffer
3381 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3382 }
3383
3384 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3385 self.move_selections(cx, |map, selection| {
3386 let cursor = if selection.is_empty() {
3387 movement::left(map, selection.start)
3388 } else {
3389 selection.start
3390 };
3391 selection.collapse_to(cursor, SelectionGoal::None);
3392 });
3393 }
3394
3395 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3396 self.move_selection_heads(cx, |map, head, _| {
3397 (movement::left(map, head), SelectionGoal::None)
3398 });
3399 }
3400
3401 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3402 self.move_selections(cx, |map, selection| {
3403 let cursor = if selection.is_empty() {
3404 movement::right(map, selection.end)
3405 } else {
3406 selection.end
3407 };
3408 selection.collapse_to(cursor, SelectionGoal::None)
3409 });
3410 }
3411
3412 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3413 self.move_selection_heads(cx, |map, head, _| {
3414 (movement::right(map, head), SelectionGoal::None)
3415 });
3416 }
3417
3418 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3419 if self.take_rename(true, cx).is_some() {
3420 return;
3421 }
3422
3423 if let Some(context_menu) = self.context_menu.as_mut() {
3424 if context_menu.select_prev(cx) {
3425 return;
3426 }
3427 }
3428
3429 if matches!(self.mode, EditorMode::SingleLine) {
3430 cx.propagate_action();
3431 return;
3432 }
3433
3434 self.move_selections(cx, |map, selection| {
3435 if !selection.is_empty() {
3436 selection.goal = SelectionGoal::None;
3437 }
3438 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3439 selection.collapse_to(cursor, goal);
3440 });
3441 }
3442
3443 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3444 self.move_selection_heads(cx, movement::up)
3445 }
3446
3447 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3448 self.take_rename(true, cx);
3449
3450 if let Some(context_menu) = self.context_menu.as_mut() {
3451 if context_menu.select_next(cx) {
3452 return;
3453 }
3454 }
3455
3456 if matches!(self.mode, EditorMode::SingleLine) {
3457 cx.propagate_action();
3458 return;
3459 }
3460
3461 self.move_selections(cx, |map, selection| {
3462 if !selection.is_empty() {
3463 selection.goal = SelectionGoal::None;
3464 }
3465 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3466 selection.collapse_to(cursor, goal);
3467 });
3468 }
3469
3470 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3471 self.move_selection_heads(cx, movement::down)
3472 }
3473
3474 pub fn move_to_previous_word_start(
3475 &mut self,
3476 _: &MoveToPreviousWordStart,
3477 cx: &mut ViewContext<Self>,
3478 ) {
3479 self.move_cursors(cx, |map, head, _| {
3480 (
3481 movement::previous_word_start(map, head),
3482 SelectionGoal::None,
3483 )
3484 });
3485 }
3486
3487 pub fn select_to_previous_word_start(
3488 &mut self,
3489 _: &SelectToPreviousWordBoundary,
3490 cx: &mut ViewContext<Self>,
3491 ) {
3492 self.move_selection_heads(cx, |map, head, _| {
3493 (
3494 movement::previous_word_start(map, head),
3495 SelectionGoal::None,
3496 )
3497 });
3498 }
3499
3500 pub fn delete_to_previous_word_start(
3501 &mut self,
3502 _: &DeleteToPreviousWordBoundary,
3503 cx: &mut ViewContext<Self>,
3504 ) {
3505 self.transact(cx, |this, cx| {
3506 this.move_selections(cx, |map, selection| {
3507 if selection.is_empty() {
3508 let cursor = movement::previous_word_start(map, selection.head());
3509 selection.set_head(cursor, SelectionGoal::None);
3510 }
3511 });
3512 this.insert("", cx);
3513 });
3514 }
3515
3516 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3517 self.move_cursors(cx, |map, head, _| {
3518 (movement::next_word_end(map, head), SelectionGoal::None)
3519 });
3520 }
3521
3522 pub fn select_to_next_word_end(
3523 &mut self,
3524 _: &SelectToNextWordBoundary,
3525 cx: &mut ViewContext<Self>,
3526 ) {
3527 self.move_selection_heads(cx, |map, head, _| {
3528 (movement::next_word_end(map, head), SelectionGoal::None)
3529 });
3530 }
3531
3532 pub fn delete_to_next_word_end(
3533 &mut self,
3534 _: &DeleteToNextWordBoundary,
3535 cx: &mut ViewContext<Self>,
3536 ) {
3537 self.transact(cx, |this, cx| {
3538 this.move_selections(cx, |map, selection| {
3539 if selection.is_empty() {
3540 let cursor = movement::next_word_end(map, selection.head());
3541 selection.set_head(cursor, SelectionGoal::None);
3542 }
3543 });
3544 this.insert("", cx);
3545 });
3546 }
3547
3548 pub fn move_to_beginning_of_line(
3549 &mut self,
3550 _: &MoveToBeginningOfLine,
3551 cx: &mut ViewContext<Self>,
3552 ) {
3553 self.move_cursors(cx, |map, head, _| {
3554 (
3555 movement::line_beginning(map, head, true),
3556 SelectionGoal::None,
3557 )
3558 });
3559 }
3560
3561 pub fn select_to_beginning_of_line(
3562 &mut self,
3563 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3564 cx: &mut ViewContext<Self>,
3565 ) {
3566 self.move_selection_heads(cx, |map, head, _| {
3567 (
3568 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3569 SelectionGoal::None,
3570 )
3571 });
3572 }
3573
3574 pub fn delete_to_beginning_of_line(
3575 &mut self,
3576 _: &DeleteToBeginningOfLine,
3577 cx: &mut ViewContext<Self>,
3578 ) {
3579 self.transact(cx, |this, cx| {
3580 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3581 this.backspace(&Backspace, cx);
3582 });
3583 }
3584
3585 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3586 self.move_cursors(cx, |map, head, _| {
3587 (movement::line_end(map, head, true), SelectionGoal::None)
3588 });
3589 }
3590
3591 pub fn select_to_end_of_line(
3592 &mut self,
3593 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3594 cx: &mut ViewContext<Self>,
3595 ) {
3596 self.move_selection_heads(cx, |map, head, _| {
3597 (
3598 movement::line_end(map, head, *stop_at_soft_boundaries),
3599 SelectionGoal::None,
3600 )
3601 });
3602 }
3603
3604 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3605 self.transact(cx, |this, cx| {
3606 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3607 this.delete(&Delete, cx);
3608 });
3609 }
3610
3611 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3612 self.transact(cx, |this, cx| {
3613 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3614 this.cut(&Cut, cx);
3615 });
3616 }
3617
3618 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3619 if matches!(self.mode, EditorMode::SingleLine) {
3620 cx.propagate_action();
3621 return;
3622 }
3623
3624 let selection = Selection {
3625 id: post_inc(&mut self.next_selection_id),
3626 start: 0,
3627 end: 0,
3628 reversed: false,
3629 goal: SelectionGoal::None,
3630 };
3631 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3632 }
3633
3634 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3635 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3636 selection.set_head(Point::zero(), SelectionGoal::None);
3637 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3638 }
3639
3640 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3641 if matches!(self.mode, EditorMode::SingleLine) {
3642 cx.propagate_action();
3643 return;
3644 }
3645
3646 let cursor = self.buffer.read(cx).read(cx).len();
3647 let selection = Selection {
3648 id: post_inc(&mut self.next_selection_id),
3649 start: cursor,
3650 end: cursor,
3651 reversed: false,
3652 goal: SelectionGoal::None,
3653 };
3654 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3655 }
3656
3657 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3658 self.nav_history = nav_history;
3659 }
3660
3661 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3662 self.nav_history.as_ref()
3663 }
3664
3665 fn push_to_nav_history(
3666 &self,
3667 position: Anchor,
3668 new_position: Option<Point>,
3669 cx: &mut ViewContext<Self>,
3670 ) {
3671 if let Some(nav_history) = &self.nav_history {
3672 let buffer = self.buffer.read(cx).read(cx);
3673 let offset = position.to_offset(&buffer);
3674 let point = position.to_point(&buffer);
3675 drop(buffer);
3676
3677 if let Some(new_position) = new_position {
3678 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3679 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3680 return;
3681 }
3682 }
3683
3684 nav_history.push(Some(NavigationData {
3685 anchor: position,
3686 offset,
3687 }));
3688 }
3689 }
3690
3691 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3692 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3693 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3694 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3695 }
3696
3697 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3698 let selection = Selection {
3699 id: post_inc(&mut self.next_selection_id),
3700 start: 0,
3701 end: self.buffer.read(cx).read(cx).len(),
3702 reversed: false,
3703 goal: SelectionGoal::None,
3704 };
3705 self.update_selections(vec![selection], None, cx);
3706 }
3707
3708 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3709 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3710 let mut selections = self.local_selections::<Point>(cx);
3711 let max_point = display_map.buffer_snapshot.max_point();
3712 for selection in &mut selections {
3713 let rows = selection.spanned_rows(true, &display_map);
3714 selection.start = Point::new(rows.start, 0);
3715 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3716 selection.reversed = false;
3717 }
3718 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3719 }
3720
3721 pub fn split_selection_into_lines(
3722 &mut self,
3723 _: &SplitSelectionIntoLines,
3724 cx: &mut ViewContext<Self>,
3725 ) {
3726 let mut to_unfold = Vec::new();
3727 let mut new_selections = Vec::new();
3728 {
3729 let selections = self.local_selections::<Point>(cx);
3730 let buffer = self.buffer.read(cx).read(cx);
3731 for selection in selections {
3732 for row in selection.start.row..selection.end.row {
3733 let cursor = Point::new(row, buffer.line_len(row));
3734 new_selections.push(Selection {
3735 id: post_inc(&mut self.next_selection_id),
3736 start: cursor,
3737 end: cursor,
3738 reversed: false,
3739 goal: SelectionGoal::None,
3740 });
3741 }
3742 new_selections.push(Selection {
3743 id: selection.id,
3744 start: selection.end,
3745 end: selection.end,
3746 reversed: false,
3747 goal: SelectionGoal::None,
3748 });
3749 to_unfold.push(selection.start..selection.end);
3750 }
3751 }
3752 self.unfold_ranges(to_unfold, cx);
3753 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3754 }
3755
3756 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3757 self.add_selection(true, cx);
3758 }
3759
3760 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3761 self.add_selection(false, cx);
3762 }
3763
3764 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3765 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3766 let mut selections = self.local_selections::<Point>(cx);
3767 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3768 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3769 let range = oldest_selection.display_range(&display_map).sorted();
3770 let columns = cmp::min(range.start.column(), range.end.column())
3771 ..cmp::max(range.start.column(), range.end.column());
3772
3773 selections.clear();
3774 let mut stack = Vec::new();
3775 for row in range.start.row()..=range.end.row() {
3776 if let Some(selection) = self.build_columnar_selection(
3777 &display_map,
3778 row,
3779 &columns,
3780 oldest_selection.reversed,
3781 ) {
3782 stack.push(selection.id);
3783 selections.push(selection);
3784 }
3785 }
3786
3787 if above {
3788 stack.reverse();
3789 }
3790
3791 AddSelectionsState { above, stack }
3792 });
3793
3794 let last_added_selection = *state.stack.last().unwrap();
3795 let mut new_selections = Vec::new();
3796 if above == state.above {
3797 let end_row = if above {
3798 0
3799 } else {
3800 display_map.max_point().row()
3801 };
3802
3803 'outer: for selection in selections {
3804 if selection.id == last_added_selection {
3805 let range = selection.display_range(&display_map).sorted();
3806 debug_assert_eq!(range.start.row(), range.end.row());
3807 let mut row = range.start.row();
3808 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3809 {
3810 start..end
3811 } else {
3812 cmp::min(range.start.column(), range.end.column())
3813 ..cmp::max(range.start.column(), range.end.column())
3814 };
3815
3816 while row != end_row {
3817 if above {
3818 row -= 1;
3819 } else {
3820 row += 1;
3821 }
3822
3823 if let Some(new_selection) = self.build_columnar_selection(
3824 &display_map,
3825 row,
3826 &columns,
3827 selection.reversed,
3828 ) {
3829 state.stack.push(new_selection.id);
3830 if above {
3831 new_selections.push(new_selection);
3832 new_selections.push(selection);
3833 } else {
3834 new_selections.push(selection);
3835 new_selections.push(new_selection);
3836 }
3837
3838 continue 'outer;
3839 }
3840 }
3841 }
3842
3843 new_selections.push(selection);
3844 }
3845 } else {
3846 new_selections = selections;
3847 new_selections.retain(|s| s.id != last_added_selection);
3848 state.stack.pop();
3849 }
3850
3851 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3852 if state.stack.len() > 1 {
3853 self.add_selections_state = Some(state);
3854 }
3855 }
3856
3857 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3858 let replace_newest = action.0;
3859 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3860 let buffer = &display_map.buffer_snapshot;
3861 let mut selections = self.local_selections::<usize>(cx);
3862 if let Some(mut select_next_state) = self.select_next_state.take() {
3863 let query = &select_next_state.query;
3864 if !select_next_state.done {
3865 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3866 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3867 let mut next_selected_range = None;
3868
3869 let bytes_after_last_selection =
3870 buffer.bytes_in_range(last_selection.end..buffer.len());
3871 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3872 let query_matches = query
3873 .stream_find_iter(bytes_after_last_selection)
3874 .map(|result| (last_selection.end, result))
3875 .chain(
3876 query
3877 .stream_find_iter(bytes_before_first_selection)
3878 .map(|result| (0, result)),
3879 );
3880 for (start_offset, query_match) in query_matches {
3881 let query_match = query_match.unwrap(); // can only fail due to I/O
3882 let offset_range =
3883 start_offset + query_match.start()..start_offset + query_match.end();
3884 let display_range = offset_range.start.to_display_point(&display_map)
3885 ..offset_range.end.to_display_point(&display_map);
3886
3887 if !select_next_state.wordwise
3888 || (!movement::is_inside_word(&display_map, display_range.start)
3889 && !movement::is_inside_word(&display_map, display_range.end))
3890 {
3891 next_selected_range = Some(offset_range);
3892 break;
3893 }
3894 }
3895
3896 if let Some(next_selected_range) = next_selected_range {
3897 if replace_newest {
3898 if let Some(newest_id) =
3899 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3900 {
3901 selections.retain(|s| s.id != newest_id);
3902 }
3903 }
3904 selections.push(Selection {
3905 id: post_inc(&mut self.next_selection_id),
3906 start: next_selected_range.start,
3907 end: next_selected_range.end,
3908 reversed: false,
3909 goal: SelectionGoal::None,
3910 });
3911 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3912 } else {
3913 select_next_state.done = true;
3914 }
3915 }
3916
3917 self.select_next_state = Some(select_next_state);
3918 } else if selections.len() == 1 {
3919 let selection = selections.last_mut().unwrap();
3920 if selection.start == selection.end {
3921 let word_range = movement::surrounding_word(
3922 &display_map,
3923 selection.start.to_display_point(&display_map),
3924 );
3925 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3926 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3927 selection.goal = SelectionGoal::None;
3928 selection.reversed = false;
3929
3930 let query = buffer
3931 .text_for_range(selection.start..selection.end)
3932 .collect::<String>();
3933 let select_state = SelectNextState {
3934 query: AhoCorasick::new_auto_configured(&[query]),
3935 wordwise: true,
3936 done: false,
3937 };
3938 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3939 self.select_next_state = Some(select_state);
3940 } else {
3941 let query = buffer
3942 .text_for_range(selection.start..selection.end)
3943 .collect::<String>();
3944 self.select_next_state = Some(SelectNextState {
3945 query: AhoCorasick::new_auto_configured(&[query]),
3946 wordwise: false,
3947 done: false,
3948 });
3949 self.select_next(action, cx);
3950 }
3951 }
3952 }
3953
3954 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3955 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3956 // as that portion won't be used for detecting if a line is a comment.
3957 let full_comment_prefix =
3958 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3959 prefix.to_string()
3960 } else {
3961 return;
3962 };
3963 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3964 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3965
3966 self.transact(cx, |this, cx| {
3967 let mut selections = this.local_selections::<Point>(cx);
3968 let mut all_selection_lines_are_comments = true;
3969 let mut edit_ranges = Vec::new();
3970 let mut last_toggled_row = None;
3971 this.buffer.update(cx, |buffer, cx| {
3972 for selection in &mut selections {
3973 edit_ranges.clear();
3974 let snapshot = buffer.snapshot(cx);
3975
3976 let end_row =
3977 if selection.end.row > selection.start.row && selection.end.column == 0 {
3978 selection.end.row
3979 } else {
3980 selection.end.row + 1
3981 };
3982
3983 for row in selection.start.row..end_row {
3984 // If multiple selections contain a given row, avoid processing that
3985 // row more than once.
3986 if last_toggled_row == Some(row) {
3987 continue;
3988 } else {
3989 last_toggled_row = Some(row);
3990 }
3991
3992 if snapshot.is_line_blank(row) {
3993 continue;
3994 }
3995
3996 let start = Point::new(row, snapshot.indent_column_for_line(row));
3997 let mut line_bytes = snapshot
3998 .bytes_in_range(start..snapshot.max_point())
3999 .flatten()
4000 .copied();
4001
4002 // If this line currently begins with the line comment prefix, then record
4003 // the range containing the prefix.
4004 if all_selection_lines_are_comments
4005 && line_bytes
4006 .by_ref()
4007 .take(comment_prefix.len())
4008 .eq(comment_prefix.bytes())
4009 {
4010 // Include any whitespace that matches the comment prefix.
4011 let matching_whitespace_len = line_bytes
4012 .zip(comment_prefix_whitespace.bytes())
4013 .take_while(|(a, b)| a == b)
4014 .count()
4015 as u32;
4016 let end = Point::new(
4017 row,
4018 start.column
4019 + comment_prefix.len() as u32
4020 + matching_whitespace_len,
4021 );
4022 edit_ranges.push(start..end);
4023 }
4024 // If this line does not begin with the line comment prefix, then record
4025 // the position where the prefix should be inserted.
4026 else {
4027 all_selection_lines_are_comments = false;
4028 edit_ranges.push(start..start);
4029 }
4030 }
4031
4032 if !edit_ranges.is_empty() {
4033 if all_selection_lines_are_comments {
4034 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4035 } else {
4036 let min_column =
4037 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4038 let edit_ranges = edit_ranges.iter().map(|range| {
4039 let position = Point::new(range.start.row, min_column);
4040 position..position
4041 });
4042 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4043 }
4044 }
4045 }
4046 });
4047
4048 this.update_selections(
4049 this.local_selections::<usize>(cx),
4050 Some(Autoscroll::Fit),
4051 cx,
4052 );
4053 });
4054 }
4055
4056 pub fn select_larger_syntax_node(
4057 &mut self,
4058 _: &SelectLargerSyntaxNode,
4059 cx: &mut ViewContext<Self>,
4060 ) {
4061 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4062 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4063 let buffer = self.buffer.read(cx).snapshot(cx);
4064
4065 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4066 let mut selected_larger_node = false;
4067 let new_selections = old_selections
4068 .iter()
4069 .map(|selection| {
4070 let old_range = selection.start..selection.end;
4071 let mut new_range = old_range.clone();
4072 while let Some(containing_range) =
4073 buffer.range_for_syntax_ancestor(new_range.clone())
4074 {
4075 new_range = containing_range;
4076 if !display_map.intersects_fold(new_range.start)
4077 && !display_map.intersects_fold(new_range.end)
4078 {
4079 break;
4080 }
4081 }
4082
4083 selected_larger_node |= new_range != old_range;
4084 Selection {
4085 id: selection.id,
4086 start: new_range.start,
4087 end: new_range.end,
4088 goal: SelectionGoal::None,
4089 reversed: selection.reversed,
4090 }
4091 })
4092 .collect::<Vec<_>>();
4093
4094 if selected_larger_node {
4095 stack.push(old_selections);
4096 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4097 }
4098 self.select_larger_syntax_node_stack = stack;
4099 }
4100
4101 pub fn select_smaller_syntax_node(
4102 &mut self,
4103 _: &SelectSmallerSyntaxNode,
4104 cx: &mut ViewContext<Self>,
4105 ) {
4106 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4107 if let Some(selections) = stack.pop() {
4108 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4109 }
4110 self.select_larger_syntax_node_stack = stack;
4111 }
4112
4113 pub fn move_to_enclosing_bracket(
4114 &mut self,
4115 _: &MoveToEnclosingBracket,
4116 cx: &mut ViewContext<Self>,
4117 ) {
4118 let mut selections = self.local_selections::<usize>(cx);
4119 let buffer = self.buffer.read(cx).snapshot(cx);
4120 for selection in &mut selections {
4121 if let Some((open_range, close_range)) =
4122 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4123 {
4124 let close_range = close_range.to_inclusive();
4125 let destination = if close_range.contains(&selection.start)
4126 && close_range.contains(&selection.end)
4127 {
4128 open_range.end
4129 } else {
4130 *close_range.start()
4131 };
4132 selection.start = destination;
4133 selection.end = destination;
4134 }
4135 }
4136
4137 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4138 }
4139
4140 pub fn go_to_diagnostic(
4141 &mut self,
4142 &GoToDiagnostic(direction): &GoToDiagnostic,
4143 cx: &mut ViewContext<Self>,
4144 ) {
4145 let buffer = self.buffer.read(cx).snapshot(cx);
4146 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4147 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4148 active_diagnostics
4149 .primary_range
4150 .to_offset(&buffer)
4151 .to_inclusive()
4152 });
4153 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4154 if active_primary_range.contains(&selection.head()) {
4155 *active_primary_range.end()
4156 } else {
4157 selection.head()
4158 }
4159 } else {
4160 selection.head()
4161 };
4162
4163 loop {
4164 let mut diagnostics = if direction == Direction::Prev {
4165 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4166 } else {
4167 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4168 };
4169 let group = diagnostics.find_map(|entry| {
4170 if entry.diagnostic.is_primary
4171 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4172 && !entry.range.is_empty()
4173 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4174 {
4175 Some((entry.range, entry.diagnostic.group_id))
4176 } else {
4177 None
4178 }
4179 });
4180
4181 if let Some((primary_range, group_id)) = group {
4182 self.activate_diagnostics(group_id, cx);
4183 self.update_selections(
4184 vec![Selection {
4185 id: selection.id,
4186 start: primary_range.start,
4187 end: primary_range.start,
4188 reversed: false,
4189 goal: SelectionGoal::None,
4190 }],
4191 Some(Autoscroll::Center),
4192 cx,
4193 );
4194 break;
4195 } else {
4196 // Cycle around to the start of the buffer, potentially moving back to the start of
4197 // the currently active diagnostic.
4198 active_primary_range.take();
4199 if direction == Direction::Prev {
4200 if search_start == buffer.len() {
4201 break;
4202 } else {
4203 search_start = buffer.len();
4204 }
4205 } else {
4206 if search_start == 0 {
4207 break;
4208 } else {
4209 search_start = 0;
4210 }
4211 }
4212 }
4213 }
4214 }
4215
4216 pub fn go_to_definition(
4217 workspace: &mut Workspace,
4218 _: &GoToDefinition,
4219 cx: &mut ViewContext<Workspace>,
4220 ) {
4221 let active_item = workspace.active_item(cx);
4222 let editor_handle = if let Some(editor) = active_item
4223 .as_ref()
4224 .and_then(|item| item.act_as::<Self>(cx))
4225 {
4226 editor
4227 } else {
4228 return;
4229 };
4230
4231 let editor = editor_handle.read(cx);
4232 let head = editor.newest_selection::<usize>(cx).head();
4233 let (buffer, head) =
4234 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4235 text_anchor
4236 } else {
4237 return;
4238 };
4239
4240 let project = workspace.project().clone();
4241 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4242 cx.spawn(|workspace, mut cx| async move {
4243 let definitions = definitions.await?;
4244 workspace.update(&mut cx, |workspace, cx| {
4245 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4246 for definition in definitions {
4247 let range = definition.range.to_offset(definition.buffer.read(cx));
4248
4249 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4250 target_editor_handle.update(cx, |target_editor, cx| {
4251 // When selecting a definition in a different buffer, disable the nav history
4252 // to avoid creating a history entry at the previous cursor location.
4253 if editor_handle != target_editor_handle {
4254 nav_history.borrow_mut().disable();
4255 }
4256 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4257 nav_history.borrow_mut().enable();
4258 });
4259 }
4260 });
4261
4262 Ok::<(), anyhow::Error>(())
4263 })
4264 .detach_and_log_err(cx);
4265 }
4266
4267 pub fn find_all_references(
4268 workspace: &mut Workspace,
4269 _: &FindAllReferences,
4270 cx: &mut ViewContext<Workspace>,
4271 ) -> Option<Task<Result<()>>> {
4272 let active_item = workspace.active_item(cx)?;
4273 let editor_handle = active_item.act_as::<Self>(cx)?;
4274
4275 let editor = editor_handle.read(cx);
4276 let head = editor.newest_selection::<usize>(cx).head();
4277 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4278 let replica_id = editor.replica_id(cx);
4279
4280 let project = workspace.project().clone();
4281 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4282 Some(cx.spawn(|workspace, mut cx| async move {
4283 let mut locations = references.await?;
4284 if locations.is_empty() {
4285 return Ok(());
4286 }
4287
4288 locations.sort_by_key(|location| location.buffer.id());
4289 let mut locations = locations.into_iter().peekable();
4290 let mut ranges_to_highlight = Vec::new();
4291
4292 let excerpt_buffer = cx.add_model(|cx| {
4293 let mut symbol_name = None;
4294 let mut multibuffer = MultiBuffer::new(replica_id);
4295 while let Some(location) = locations.next() {
4296 let buffer = location.buffer.read(cx);
4297 let mut ranges_for_buffer = Vec::new();
4298 let range = location.range.to_offset(buffer);
4299 ranges_for_buffer.push(range.clone());
4300 if symbol_name.is_none() {
4301 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4302 }
4303
4304 while let Some(next_location) = locations.peek() {
4305 if next_location.buffer == location.buffer {
4306 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4307 locations.next();
4308 } else {
4309 break;
4310 }
4311 }
4312
4313 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4314 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4315 location.buffer.clone(),
4316 ranges_for_buffer,
4317 1,
4318 cx,
4319 ));
4320 }
4321 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4322 });
4323
4324 workspace.update(&mut cx, |workspace, cx| {
4325 let editor =
4326 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4327 editor.update(cx, |editor, cx| {
4328 let color = editor.style(cx).highlighted_line_background;
4329 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4330 });
4331 workspace.add_item(Box::new(editor), cx);
4332 });
4333
4334 Ok(())
4335 }))
4336 }
4337
4338 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4339 use language::ToOffset as _;
4340
4341 let project = self.project.clone()?;
4342 let selection = self.newest_anchor_selection().clone();
4343 let (cursor_buffer, cursor_buffer_position) = self
4344 .buffer
4345 .read(cx)
4346 .text_anchor_for_position(selection.head(), cx)?;
4347 let (tail_buffer, _) = self
4348 .buffer
4349 .read(cx)
4350 .text_anchor_for_position(selection.tail(), cx)?;
4351 if tail_buffer != cursor_buffer {
4352 return None;
4353 }
4354
4355 let snapshot = cursor_buffer.read(cx).snapshot();
4356 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4357 let prepare_rename = project.update(cx, |project, cx| {
4358 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4359 });
4360
4361 Some(cx.spawn(|this, mut cx| async move {
4362 if let Some(rename_range) = prepare_rename.await? {
4363 let rename_buffer_range = rename_range.to_offset(&snapshot);
4364 let cursor_offset_in_rename_range =
4365 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4366
4367 this.update(&mut cx, |this, cx| {
4368 this.take_rename(false, cx);
4369 let style = this.style(cx);
4370 let buffer = this.buffer.read(cx).read(cx);
4371 let cursor_offset = selection.head().to_offset(&buffer);
4372 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4373 let rename_end = rename_start + rename_buffer_range.len();
4374 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4375 let mut old_highlight_id = None;
4376 let old_name = buffer
4377 .chunks(rename_start..rename_end, true)
4378 .map(|chunk| {
4379 if old_highlight_id.is_none() {
4380 old_highlight_id = chunk.syntax_highlight_id;
4381 }
4382 chunk.text
4383 })
4384 .collect();
4385
4386 drop(buffer);
4387
4388 // Position the selection in the rename editor so that it matches the current selection.
4389 this.show_local_selections = false;
4390 let rename_editor = cx.add_view(|cx| {
4391 let mut editor = Editor::single_line(None, cx);
4392 if let Some(old_highlight_id) = old_highlight_id {
4393 editor.override_text_style =
4394 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4395 }
4396 editor
4397 .buffer
4398 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4399 editor.select_all(&SelectAll, cx);
4400 editor
4401 });
4402
4403 let ranges = this
4404 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4405 .into_iter()
4406 .flat_map(|(_, ranges)| ranges)
4407 .chain(
4408 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4409 .into_iter()
4410 .flat_map(|(_, ranges)| ranges),
4411 )
4412 .collect();
4413 this.highlight_text::<Rename>(
4414 ranges,
4415 HighlightStyle {
4416 fade_out: Some(style.rename_fade),
4417 ..Default::default()
4418 },
4419 cx,
4420 );
4421 cx.focus(&rename_editor);
4422 let block_id = this.insert_blocks(
4423 [BlockProperties {
4424 position: range.start.clone(),
4425 height: 1,
4426 render: Arc::new({
4427 let editor = rename_editor.clone();
4428 move |cx: &BlockContext| {
4429 ChildView::new(editor.clone())
4430 .contained()
4431 .with_padding_left(cx.anchor_x)
4432 .boxed()
4433 }
4434 }),
4435 disposition: BlockDisposition::Below,
4436 }],
4437 cx,
4438 )[0];
4439 this.pending_rename = Some(RenameState {
4440 range,
4441 old_name,
4442 editor: rename_editor,
4443 block_id,
4444 });
4445 });
4446 }
4447
4448 Ok(())
4449 }))
4450 }
4451
4452 pub fn confirm_rename(
4453 workspace: &mut Workspace,
4454 _: &ConfirmRename,
4455 cx: &mut ViewContext<Workspace>,
4456 ) -> Option<Task<Result<()>>> {
4457 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4458
4459 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4460 let rename = editor.take_rename(false, cx)?;
4461 let buffer = editor.buffer.read(cx);
4462 let (start_buffer, start) =
4463 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4464 let (end_buffer, end) =
4465 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4466 if start_buffer == end_buffer {
4467 let new_name = rename.editor.read(cx).text(cx);
4468 Some((start_buffer, start..end, rename.old_name, new_name))
4469 } else {
4470 None
4471 }
4472 })?;
4473
4474 let rename = workspace.project().clone().update(cx, |project, cx| {
4475 project.perform_rename(
4476 buffer.clone(),
4477 range.start.clone(),
4478 new_name.clone(),
4479 true,
4480 cx,
4481 )
4482 });
4483
4484 Some(cx.spawn(|workspace, mut cx| async move {
4485 let project_transaction = rename.await?;
4486 Self::open_project_transaction(
4487 editor.clone(),
4488 workspace,
4489 project_transaction,
4490 format!("Rename: {} → {}", old_name, new_name),
4491 cx.clone(),
4492 )
4493 .await?;
4494
4495 editor.update(&mut cx, |editor, cx| {
4496 editor.refresh_document_highlights(cx);
4497 });
4498 Ok(())
4499 }))
4500 }
4501
4502 fn take_rename(
4503 &mut self,
4504 moving_cursor: bool,
4505 cx: &mut ViewContext<Self>,
4506 ) -> Option<RenameState> {
4507 let rename = self.pending_rename.take()?;
4508 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4509 self.clear_text_highlights::<Rename>(cx);
4510 self.show_local_selections = true;
4511
4512 if moving_cursor {
4513 let cursor_in_rename_editor =
4514 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4515
4516 // Update the selection to match the position of the selection inside
4517 // the rename editor.
4518 let snapshot = self.buffer.read(cx).read(cx);
4519 let rename_range = rename.range.to_offset(&snapshot);
4520 let cursor_in_editor = snapshot
4521 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4522 .min(rename_range.end);
4523 drop(snapshot);
4524
4525 self.update_selections(
4526 vec![Selection {
4527 id: self.newest_anchor_selection().id,
4528 start: cursor_in_editor,
4529 end: cursor_in_editor,
4530 reversed: false,
4531 goal: SelectionGoal::None,
4532 }],
4533 None,
4534 cx,
4535 );
4536 }
4537
4538 Some(rename)
4539 }
4540
4541 fn invalidate_rename_range(
4542 &mut self,
4543 buffer: &MultiBufferSnapshot,
4544 cx: &mut ViewContext<Self>,
4545 ) {
4546 if let Some(rename) = self.pending_rename.as_ref() {
4547 if self.selections.len() == 1 {
4548 let head = self.selections[0].head().to_offset(buffer);
4549 let range = rename.range.to_offset(buffer).to_inclusive();
4550 if range.contains(&head) {
4551 return;
4552 }
4553 }
4554 let rename = self.pending_rename.take().unwrap();
4555 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4556 self.clear_background_highlights::<Rename>(cx);
4557 }
4558 }
4559
4560 #[cfg(any(test, feature = "test-support"))]
4561 pub fn pending_rename(&self) -> Option<&RenameState> {
4562 self.pending_rename.as_ref()
4563 }
4564
4565 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4566 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4567 let buffer = self.buffer.read(cx).snapshot(cx);
4568 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4569 let is_valid = buffer
4570 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4571 .any(|entry| {
4572 entry.diagnostic.is_primary
4573 && !entry.range.is_empty()
4574 && entry.range.start == primary_range_start
4575 && entry.diagnostic.message == active_diagnostics.primary_message
4576 });
4577
4578 if is_valid != active_diagnostics.is_valid {
4579 active_diagnostics.is_valid = is_valid;
4580 let mut new_styles = HashMap::default();
4581 for (block_id, diagnostic) in &active_diagnostics.blocks {
4582 new_styles.insert(
4583 *block_id,
4584 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4585 );
4586 }
4587 self.display_map
4588 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4589 }
4590 }
4591 }
4592
4593 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4594 self.dismiss_diagnostics(cx);
4595 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4596 let buffer = self.buffer.read(cx).snapshot(cx);
4597
4598 let mut primary_range = None;
4599 let mut primary_message = None;
4600 let mut group_end = Point::zero();
4601 let diagnostic_group = buffer
4602 .diagnostic_group::<Point>(group_id)
4603 .map(|entry| {
4604 if entry.range.end > group_end {
4605 group_end = entry.range.end;
4606 }
4607 if entry.diagnostic.is_primary {
4608 primary_range = Some(entry.range.clone());
4609 primary_message = Some(entry.diagnostic.message.clone());
4610 }
4611 entry
4612 })
4613 .collect::<Vec<_>>();
4614 let primary_range = primary_range.unwrap();
4615 let primary_message = primary_message.unwrap();
4616 let primary_range =
4617 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4618
4619 let blocks = display_map
4620 .insert_blocks(
4621 diagnostic_group.iter().map(|entry| {
4622 let diagnostic = entry.diagnostic.clone();
4623 let message_height = diagnostic.message.lines().count() as u8;
4624 BlockProperties {
4625 position: buffer.anchor_after(entry.range.start),
4626 height: message_height,
4627 render: diagnostic_block_renderer(diagnostic, true),
4628 disposition: BlockDisposition::Below,
4629 }
4630 }),
4631 cx,
4632 )
4633 .into_iter()
4634 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4635 .collect();
4636
4637 Some(ActiveDiagnosticGroup {
4638 primary_range,
4639 primary_message,
4640 blocks,
4641 is_valid: true,
4642 })
4643 });
4644 }
4645
4646 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4647 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4648 self.display_map.update(cx, |display_map, cx| {
4649 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4650 });
4651 cx.notify();
4652 }
4653 }
4654
4655 fn build_columnar_selection(
4656 &mut self,
4657 display_map: &DisplaySnapshot,
4658 row: u32,
4659 columns: &Range<u32>,
4660 reversed: bool,
4661 ) -> Option<Selection<Point>> {
4662 let is_empty = columns.start == columns.end;
4663 let line_len = display_map.line_len(row);
4664 if columns.start < line_len || (is_empty && columns.start == line_len) {
4665 let start = DisplayPoint::new(row, columns.start);
4666 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4667 Some(Selection {
4668 id: post_inc(&mut self.next_selection_id),
4669 start: start.to_point(display_map),
4670 end: end.to_point(display_map),
4671 reversed,
4672 goal: SelectionGoal::ColumnRange {
4673 start: columns.start,
4674 end: columns.end,
4675 },
4676 })
4677 } else {
4678 None
4679 }
4680 }
4681
4682 pub fn local_selections_in_range(
4683 &self,
4684 range: Range<Anchor>,
4685 display_map: &DisplaySnapshot,
4686 ) -> Vec<Selection<Point>> {
4687 let buffer = &display_map.buffer_snapshot;
4688
4689 let start_ix = match self
4690 .selections
4691 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4692 {
4693 Ok(ix) | Err(ix) => ix,
4694 };
4695 let end_ix = match self
4696 .selections
4697 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4698 {
4699 Ok(ix) => ix + 1,
4700 Err(ix) => ix,
4701 };
4702
4703 fn point_selection(
4704 selection: &Selection<Anchor>,
4705 buffer: &MultiBufferSnapshot,
4706 ) -> Selection<Point> {
4707 let start = selection.start.to_point(&buffer);
4708 let end = selection.end.to_point(&buffer);
4709 Selection {
4710 id: selection.id,
4711 start,
4712 end,
4713 reversed: selection.reversed,
4714 goal: selection.goal,
4715 }
4716 }
4717
4718 self.selections[start_ix..end_ix]
4719 .iter()
4720 .chain(
4721 self.pending_selection
4722 .as_ref()
4723 .map(|pending| &pending.selection),
4724 )
4725 .map(|s| point_selection(s, &buffer))
4726 .collect()
4727 }
4728
4729 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4730 where
4731 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4732 {
4733 let buffer = self.buffer.read(cx).snapshot(cx);
4734 let mut selections = self
4735 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4736 .peekable();
4737
4738 let mut pending_selection = self.pending_selection::<D>(&buffer);
4739
4740 iter::from_fn(move || {
4741 if let Some(pending) = pending_selection.as_mut() {
4742 while let Some(next_selection) = selections.peek() {
4743 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4744 let next_selection = selections.next().unwrap();
4745 if next_selection.start < pending.start {
4746 pending.start = next_selection.start;
4747 }
4748 if next_selection.end > pending.end {
4749 pending.end = next_selection.end;
4750 }
4751 } else if next_selection.end < pending.start {
4752 return selections.next();
4753 } else {
4754 break;
4755 }
4756 }
4757
4758 pending_selection.take()
4759 } else {
4760 selections.next()
4761 }
4762 })
4763 .collect()
4764 }
4765
4766 fn resolve_selections<'a, D, I>(
4767 &self,
4768 selections: I,
4769 snapshot: &MultiBufferSnapshot,
4770 ) -> impl 'a + Iterator<Item = Selection<D>>
4771 where
4772 D: TextDimension + Ord + Sub<D, Output = D>,
4773 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4774 {
4775 let (to_summarize, selections) = selections.into_iter().tee();
4776 let mut summaries = snapshot
4777 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4778 .into_iter();
4779 selections.map(move |s| Selection {
4780 id: s.id,
4781 start: summaries.next().unwrap(),
4782 end: summaries.next().unwrap(),
4783 reversed: s.reversed,
4784 goal: s.goal,
4785 })
4786 }
4787
4788 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4789 &self,
4790 snapshot: &MultiBufferSnapshot,
4791 ) -> Option<Selection<D>> {
4792 self.pending_selection
4793 .as_ref()
4794 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4795 }
4796
4797 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4798 &self,
4799 selection: &Selection<Anchor>,
4800 buffer: &MultiBufferSnapshot,
4801 ) -> Selection<D> {
4802 Selection {
4803 id: selection.id,
4804 start: selection.start.summary::<D>(&buffer),
4805 end: selection.end.summary::<D>(&buffer),
4806 reversed: selection.reversed,
4807 goal: selection.goal,
4808 }
4809 }
4810
4811 fn selection_count<'a>(&self) -> usize {
4812 let mut count = self.selections.len();
4813 if self.pending_selection.is_some() {
4814 count += 1;
4815 }
4816 count
4817 }
4818
4819 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4820 &self,
4821 cx: &AppContext,
4822 ) -> Selection<D> {
4823 let snapshot = self.buffer.read(cx).read(cx);
4824 self.selections
4825 .iter()
4826 .min_by_key(|s| s.id)
4827 .map(|selection| self.resolve_selection(selection, &snapshot))
4828 .or_else(|| self.pending_selection(&snapshot))
4829 .unwrap()
4830 }
4831
4832 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4833 &self,
4834 cx: &AppContext,
4835 ) -> Selection<D> {
4836 self.resolve_selection(
4837 self.newest_anchor_selection(),
4838 &self.buffer.read(cx).read(cx),
4839 )
4840 }
4841
4842 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4843 &self,
4844 snapshot: &MultiBufferSnapshot,
4845 ) -> Selection<D> {
4846 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4847 }
4848
4849 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4850 self.pending_selection
4851 .as_ref()
4852 .map(|s| &s.selection)
4853 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4854 .unwrap()
4855 }
4856
4857 pub fn update_selections<T>(
4858 &mut self,
4859 mut selections: Vec<Selection<T>>,
4860 autoscroll: Option<Autoscroll>,
4861 cx: &mut ViewContext<Self>,
4862 ) where
4863 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4864 {
4865 let buffer = self.buffer.read(cx).snapshot(cx);
4866 selections.sort_unstable_by_key(|s| s.start);
4867
4868 // Merge overlapping selections.
4869 let mut i = 1;
4870 while i < selections.len() {
4871 if selections[i - 1].end >= selections[i].start {
4872 let removed = selections.remove(i);
4873 if removed.start < selections[i - 1].start {
4874 selections[i - 1].start = removed.start;
4875 }
4876 if removed.end > selections[i - 1].end {
4877 selections[i - 1].end = removed.end;
4878 }
4879 } else {
4880 i += 1;
4881 }
4882 }
4883
4884 if let Some(autoscroll) = autoscroll {
4885 self.request_autoscroll(autoscroll, cx);
4886 }
4887
4888 self.set_selections(
4889 Arc::from_iter(selections.into_iter().map(|selection| {
4890 let end_bias = if selection.end > selection.start {
4891 Bias::Left
4892 } else {
4893 Bias::Right
4894 };
4895 Selection {
4896 id: selection.id,
4897 start: buffer.anchor_after(selection.start),
4898 end: buffer.anchor_at(selection.end, end_bias),
4899 reversed: selection.reversed,
4900 goal: selection.goal,
4901 }
4902 })),
4903 None,
4904 true,
4905 cx,
4906 );
4907 }
4908
4909 pub fn set_selections_from_remote(
4910 &mut self,
4911 mut selections: Vec<Selection<Anchor>>,
4912 cx: &mut ViewContext<Self>,
4913 ) {
4914 let buffer = self.buffer.read(cx);
4915 let buffer = buffer.read(cx);
4916 selections.sort_by(|a, b| {
4917 a.start
4918 .cmp(&b.start, &*buffer)
4919 .unwrap()
4920 .then_with(|| b.end.cmp(&a.end, &*buffer).unwrap())
4921 });
4922
4923 // Merge overlapping selections
4924 let mut i = 1;
4925 while i < selections.len() {
4926 if selections[i - 1]
4927 .end
4928 .cmp(&selections[i].start, &*buffer)
4929 .unwrap()
4930 .is_ge()
4931 {
4932 let removed = selections.remove(i);
4933 if removed
4934 .start
4935 .cmp(&selections[i - 1].start, &*buffer)
4936 .unwrap()
4937 .is_lt()
4938 {
4939 selections[i - 1].start = removed.start;
4940 }
4941 if removed
4942 .end
4943 .cmp(&selections[i - 1].end, &*buffer)
4944 .unwrap()
4945 .is_gt()
4946 {
4947 selections[i - 1].end = removed.end;
4948 }
4949 } else {
4950 i += 1;
4951 }
4952 }
4953
4954 drop(buffer);
4955 self.set_selections(selections.into(), None, false, cx);
4956 }
4957
4958 /// Compute new ranges for any selections that were located in excerpts that have
4959 /// since been removed.
4960 ///
4961 /// Returns a `HashMap` indicating which selections whose former head position
4962 /// was no longer present. The keys of the map are selection ids. The values are
4963 /// the id of the new excerpt where the head of the selection has been moved.
4964 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4965 let snapshot = self.buffer.read(cx).read(cx);
4966 let mut selections_with_lost_position = HashMap::default();
4967
4968 let mut pending_selection = self.pending_selection.take();
4969 if let Some(pending) = pending_selection.as_mut() {
4970 let anchors =
4971 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
4972 let (_, start, kept_start) = anchors[0].clone();
4973 let (_, end, kept_end) = anchors[1].clone();
4974 let kept_head = if pending.selection.reversed {
4975 kept_start
4976 } else {
4977 kept_end
4978 };
4979 if !kept_head {
4980 selections_with_lost_position.insert(
4981 pending.selection.id,
4982 pending.selection.head().excerpt_id.clone(),
4983 );
4984 }
4985
4986 pending.selection.start = start;
4987 pending.selection.end = end;
4988 }
4989
4990 let anchors_with_status = snapshot.refresh_anchors(
4991 self.selections
4992 .iter()
4993 .flat_map(|selection| [&selection.start, &selection.end]),
4994 );
4995 self.selections = anchors_with_status
4996 .chunks(2)
4997 .map(|selection_anchors| {
4998 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
4999 let (_, end, kept_end) = selection_anchors[1].clone();
5000 let selection = &self.selections[anchor_ix / 2];
5001 let kept_head = if selection.reversed {
5002 kept_start
5003 } else {
5004 kept_end
5005 };
5006 if !kept_head {
5007 selections_with_lost_position
5008 .insert(selection.id, selection.head().excerpt_id.clone());
5009 }
5010
5011 Selection {
5012 id: selection.id,
5013 start,
5014 end,
5015 reversed: selection.reversed,
5016 goal: selection.goal,
5017 }
5018 })
5019 .collect();
5020 drop(snapshot);
5021
5022 let new_selections = self.local_selections::<usize>(cx);
5023 if !new_selections.is_empty() {
5024 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5025 }
5026 self.pending_selection = pending_selection;
5027
5028 selections_with_lost_position
5029 }
5030
5031 fn set_selections(
5032 &mut self,
5033 selections: Arc<[Selection<Anchor>]>,
5034 pending_selection: Option<PendingSelection>,
5035 local: bool,
5036 cx: &mut ViewContext<Self>,
5037 ) {
5038 assert!(
5039 !selections.is_empty() || pending_selection.is_some(),
5040 "must have at least one selection"
5041 );
5042
5043 let old_cursor_position = self.newest_anchor_selection().head();
5044
5045 self.selections = selections;
5046 self.pending_selection = pending_selection;
5047 if self.focused && self.leader_replica_id.is_none() {
5048 self.buffer.update(cx, |buffer, cx| {
5049 buffer.set_active_selections(&self.selections, cx)
5050 });
5051 }
5052
5053 let display_map = self
5054 .display_map
5055 .update(cx, |display_map, cx| display_map.snapshot(cx));
5056 let buffer = &display_map.buffer_snapshot;
5057 self.add_selections_state = None;
5058 self.select_next_state = None;
5059 self.select_larger_syntax_node_stack.clear();
5060 self.autoclose_stack.invalidate(&self.selections, &buffer);
5061 self.snippet_stack.invalidate(&self.selections, &buffer);
5062 self.invalidate_rename_range(&buffer, cx);
5063
5064 let new_cursor_position = self.newest_anchor_selection().head();
5065
5066 self.push_to_nav_history(
5067 old_cursor_position.clone(),
5068 Some(new_cursor_position.to_point(&buffer)),
5069 cx,
5070 );
5071
5072 if local {
5073 let completion_menu = match self.context_menu.as_mut() {
5074 Some(ContextMenu::Completions(menu)) => Some(menu),
5075 _ => {
5076 self.context_menu.take();
5077 None
5078 }
5079 };
5080
5081 if let Some(completion_menu) = completion_menu {
5082 let cursor_position = new_cursor_position.to_offset(&buffer);
5083 let (word_range, kind) =
5084 buffer.surrounding_word(completion_menu.initial_position.clone());
5085 if kind == Some(CharKind::Word)
5086 && word_range.to_inclusive().contains(&cursor_position)
5087 {
5088 let query = Self::completion_query(&buffer, cursor_position);
5089 cx.background()
5090 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5091 self.show_completions(&ShowCompletions, cx);
5092 } else {
5093 self.hide_context_menu(cx);
5094 }
5095 }
5096
5097 if old_cursor_position.to_display_point(&display_map).row()
5098 != new_cursor_position.to_display_point(&display_map).row()
5099 {
5100 self.available_code_actions.take();
5101 }
5102 self.refresh_code_actions(cx);
5103 self.refresh_document_highlights(cx);
5104 }
5105
5106 self.pause_cursor_blinking(cx);
5107 cx.emit(Event::SelectionsChanged { local });
5108 }
5109
5110 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5111 self.autoscroll_request = Some((autoscroll, true));
5112 cx.notify();
5113 }
5114
5115 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5116 self.autoscroll_request = Some((autoscroll, false));
5117 cx.notify();
5118 }
5119
5120 pub fn transact(
5121 &mut self,
5122 cx: &mut ViewContext<Self>,
5123 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5124 ) {
5125 self.start_transaction_at(Instant::now(), cx);
5126 update(self, cx);
5127 self.end_transaction_at(Instant::now(), cx);
5128 }
5129
5130 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5131 self.end_selection(cx);
5132 if let Some(tx_id) = self
5133 .buffer
5134 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5135 {
5136 self.selection_history
5137 .insert(tx_id, (self.selections.clone(), None));
5138 }
5139 }
5140
5141 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5142 if let Some(tx_id) = self
5143 .buffer
5144 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5145 {
5146 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5147 *end_selections = Some(self.selections.clone());
5148 } else {
5149 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5150 }
5151 }
5152 }
5153
5154 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5155 log::info!("Editor::page_up");
5156 }
5157
5158 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5159 log::info!("Editor::page_down");
5160 }
5161
5162 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5163 let mut fold_ranges = Vec::new();
5164
5165 let selections = self.local_selections::<Point>(cx);
5166 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5167 for selection in selections {
5168 let range = selection.display_range(&display_map).sorted();
5169 let buffer_start_row = range.start.to_point(&display_map).row;
5170
5171 for row in (0..=range.end.row()).rev() {
5172 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5173 let fold_range = self.foldable_range_for_line(&display_map, row);
5174 if fold_range.end.row >= buffer_start_row {
5175 fold_ranges.push(fold_range);
5176 if row <= range.start.row() {
5177 break;
5178 }
5179 }
5180 }
5181 }
5182 }
5183
5184 self.fold_ranges(fold_ranges, cx);
5185 }
5186
5187 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5188 let selections = self.local_selections::<Point>(cx);
5189 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5190 let buffer = &display_map.buffer_snapshot;
5191 let ranges = selections
5192 .iter()
5193 .map(|s| {
5194 let range = s.display_range(&display_map).sorted();
5195 let mut start = range.start.to_point(&display_map);
5196 let mut end = range.end.to_point(&display_map);
5197 start.column = 0;
5198 end.column = buffer.line_len(end.row);
5199 start..end
5200 })
5201 .collect::<Vec<_>>();
5202 self.unfold_ranges(ranges, cx);
5203 }
5204
5205 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5206 let max_point = display_map.max_point();
5207 if display_row >= max_point.row() {
5208 false
5209 } else {
5210 let (start_indent, is_blank) = display_map.line_indent(display_row);
5211 if is_blank {
5212 false
5213 } else {
5214 for display_row in display_row + 1..=max_point.row() {
5215 let (indent, is_blank) = display_map.line_indent(display_row);
5216 if !is_blank {
5217 return indent > start_indent;
5218 }
5219 }
5220 false
5221 }
5222 }
5223 }
5224
5225 fn foldable_range_for_line(
5226 &self,
5227 display_map: &DisplaySnapshot,
5228 start_row: u32,
5229 ) -> Range<Point> {
5230 let max_point = display_map.max_point();
5231
5232 let (start_indent, _) = display_map.line_indent(start_row);
5233 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5234 let mut end = None;
5235 for row in start_row + 1..=max_point.row() {
5236 let (indent, is_blank) = display_map.line_indent(row);
5237 if !is_blank && indent <= start_indent {
5238 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5239 break;
5240 }
5241 }
5242
5243 let end = end.unwrap_or(max_point);
5244 return start.to_point(display_map)..end.to_point(display_map);
5245 }
5246
5247 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5248 let selections = self.local_selections::<Point>(cx);
5249 let ranges = selections.into_iter().map(|s| s.start..s.end);
5250 self.fold_ranges(ranges, cx);
5251 }
5252
5253 fn fold_ranges<T: ToOffset>(
5254 &mut self,
5255 ranges: impl IntoIterator<Item = Range<T>>,
5256 cx: &mut ViewContext<Self>,
5257 ) {
5258 let mut ranges = ranges.into_iter().peekable();
5259 if ranges.peek().is_some() {
5260 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5261 self.request_autoscroll(Autoscroll::Fit, cx);
5262 cx.notify();
5263 }
5264 }
5265
5266 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5267 if !ranges.is_empty() {
5268 self.display_map
5269 .update(cx, |map, cx| map.unfold(ranges, cx));
5270 self.request_autoscroll(Autoscroll::Fit, cx);
5271 cx.notify();
5272 }
5273 }
5274
5275 pub fn insert_blocks(
5276 &mut self,
5277 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5278 cx: &mut ViewContext<Self>,
5279 ) -> Vec<BlockId> {
5280 let blocks = self
5281 .display_map
5282 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5283 self.request_autoscroll(Autoscroll::Fit, cx);
5284 blocks
5285 }
5286
5287 pub fn replace_blocks(
5288 &mut self,
5289 blocks: HashMap<BlockId, RenderBlock>,
5290 cx: &mut ViewContext<Self>,
5291 ) {
5292 self.display_map
5293 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5294 self.request_autoscroll(Autoscroll::Fit, cx);
5295 }
5296
5297 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5298 self.display_map.update(cx, |display_map, cx| {
5299 display_map.remove_blocks(block_ids, cx)
5300 });
5301 }
5302
5303 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5304 self.display_map
5305 .update(cx, |map, cx| map.snapshot(cx))
5306 .longest_row()
5307 }
5308
5309 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5310 self.display_map
5311 .update(cx, |map, cx| map.snapshot(cx))
5312 .max_point()
5313 }
5314
5315 pub fn text(&self, cx: &AppContext) -> String {
5316 self.buffer.read(cx).read(cx).text()
5317 }
5318
5319 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5320 self.transact(cx, |this, cx| {
5321 this.buffer
5322 .read(cx)
5323 .as_singleton()
5324 .expect("you can only call set_text on editors for singleton buffers")
5325 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5326 });
5327 }
5328
5329 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5330 self.display_map
5331 .update(cx, |map, cx| map.snapshot(cx))
5332 .text()
5333 }
5334
5335 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5336 let language = self.language(cx);
5337 let settings = cx.global::<Settings>();
5338 let mode = self
5339 .soft_wrap_mode_override
5340 .unwrap_or_else(|| settings.soft_wrap(language));
5341 match mode {
5342 settings::SoftWrap::None => SoftWrap::None,
5343 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5344 settings::SoftWrap::PreferredLineLength => {
5345 SoftWrap::Column(settings.preferred_line_length(language))
5346 }
5347 }
5348 }
5349
5350 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5351 self.soft_wrap_mode_override = Some(mode);
5352 cx.notify();
5353 }
5354
5355 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5356 self.display_map
5357 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5358 }
5359
5360 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5361 self.highlighted_rows = rows;
5362 }
5363
5364 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5365 self.highlighted_rows.clone()
5366 }
5367
5368 pub fn highlight_background<T: 'static>(
5369 &mut self,
5370 ranges: Vec<Range<Anchor>>,
5371 color: Color,
5372 cx: &mut ViewContext<Self>,
5373 ) {
5374 self.background_highlights
5375 .insert(TypeId::of::<T>(), (color, ranges));
5376 cx.notify();
5377 }
5378
5379 pub fn clear_background_highlights<T: 'static>(
5380 &mut self,
5381 cx: &mut ViewContext<Self>,
5382 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5383 cx.notify();
5384 self.background_highlights.remove(&TypeId::of::<T>())
5385 }
5386
5387 #[cfg(feature = "test-support")]
5388 pub fn all_background_highlights(
5389 &mut self,
5390 cx: &mut ViewContext<Self>,
5391 ) -> Vec<(Range<DisplayPoint>, Color)> {
5392 let snapshot = self.snapshot(cx);
5393 let buffer = &snapshot.buffer_snapshot;
5394 let start = buffer.anchor_before(0);
5395 let end = buffer.anchor_after(buffer.len());
5396 self.background_highlights_in_range(start..end, &snapshot)
5397 }
5398
5399 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5400 self.background_highlights
5401 .get(&TypeId::of::<T>())
5402 .map(|(color, ranges)| (*color, ranges.as_slice()))
5403 }
5404
5405 pub fn background_highlights_in_range(
5406 &self,
5407 search_range: Range<Anchor>,
5408 display_snapshot: &DisplaySnapshot,
5409 ) -> Vec<(Range<DisplayPoint>, Color)> {
5410 let mut results = Vec::new();
5411 let buffer = &display_snapshot.buffer_snapshot;
5412 for (color, ranges) in self.background_highlights.values() {
5413 let start_ix = match ranges.binary_search_by(|probe| {
5414 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5415 if cmp.is_gt() {
5416 Ordering::Greater
5417 } else {
5418 Ordering::Less
5419 }
5420 }) {
5421 Ok(i) | Err(i) => i,
5422 };
5423 for range in &ranges[start_ix..] {
5424 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5425 break;
5426 }
5427 let start = range
5428 .start
5429 .to_point(buffer)
5430 .to_display_point(display_snapshot);
5431 let end = range
5432 .end
5433 .to_point(buffer)
5434 .to_display_point(display_snapshot);
5435 results.push((start..end, *color))
5436 }
5437 }
5438 results
5439 }
5440
5441 pub fn highlight_text<T: 'static>(
5442 &mut self,
5443 ranges: Vec<Range<Anchor>>,
5444 style: HighlightStyle,
5445 cx: &mut ViewContext<Self>,
5446 ) {
5447 self.display_map.update(cx, |map, _| {
5448 map.highlight_text(TypeId::of::<T>(), ranges, style)
5449 });
5450 cx.notify();
5451 }
5452
5453 pub fn clear_text_highlights<T: 'static>(
5454 &mut self,
5455 cx: &mut ViewContext<Self>,
5456 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5457 cx.notify();
5458 self.display_map
5459 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5460 }
5461
5462 fn next_blink_epoch(&mut self) -> usize {
5463 self.blink_epoch += 1;
5464 self.blink_epoch
5465 }
5466
5467 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5468 if !self.focused {
5469 return;
5470 }
5471
5472 self.show_local_cursors = true;
5473 cx.notify();
5474
5475 let epoch = self.next_blink_epoch();
5476 cx.spawn(|this, mut cx| {
5477 let this = this.downgrade();
5478 async move {
5479 Timer::after(CURSOR_BLINK_INTERVAL).await;
5480 if let Some(this) = this.upgrade(&cx) {
5481 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5482 }
5483 }
5484 })
5485 .detach();
5486 }
5487
5488 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5489 if epoch == self.blink_epoch {
5490 self.blinking_paused = false;
5491 self.blink_cursors(epoch, cx);
5492 }
5493 }
5494
5495 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5496 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5497 self.show_local_cursors = !self.show_local_cursors;
5498 cx.notify();
5499
5500 let epoch = self.next_blink_epoch();
5501 cx.spawn(|this, mut cx| {
5502 let this = this.downgrade();
5503 async move {
5504 Timer::after(CURSOR_BLINK_INTERVAL).await;
5505 if let Some(this) = this.upgrade(&cx) {
5506 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5507 }
5508 }
5509 })
5510 .detach();
5511 }
5512 }
5513
5514 pub fn show_local_cursors(&self) -> bool {
5515 self.show_local_cursors && self.focused
5516 }
5517
5518 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5519 cx.notify();
5520 }
5521
5522 fn on_buffer_event(
5523 &mut self,
5524 _: ModelHandle<MultiBuffer>,
5525 event: &language::Event,
5526 cx: &mut ViewContext<Self>,
5527 ) {
5528 match event {
5529 language::Event::Edited => {
5530 self.refresh_active_diagnostics(cx);
5531 self.refresh_code_actions(cx);
5532 cx.emit(Event::BufferEdited);
5533 }
5534 language::Event::Dirtied => cx.emit(Event::Dirtied),
5535 language::Event::Saved => cx.emit(Event::Saved),
5536 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5537 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5538 language::Event::Closed => cx.emit(Event::Closed),
5539 language::Event::DiagnosticsUpdated => {
5540 self.refresh_active_diagnostics(cx);
5541 }
5542 _ => {}
5543 }
5544 }
5545
5546 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5547 cx.notify();
5548 }
5549
5550 pub fn set_searchable(&mut self, searchable: bool) {
5551 self.searchable = searchable;
5552 }
5553
5554 pub fn searchable(&self) -> bool {
5555 self.searchable
5556 }
5557
5558 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5559 let active_item = workspace.active_item(cx);
5560 let editor_handle = if let Some(editor) = active_item
5561 .as_ref()
5562 .and_then(|item| item.act_as::<Self>(cx))
5563 {
5564 editor
5565 } else {
5566 cx.propagate_action();
5567 return;
5568 };
5569
5570 let editor = editor_handle.read(cx);
5571 let buffer = editor.buffer.read(cx);
5572 if buffer.is_singleton() {
5573 cx.propagate_action();
5574 return;
5575 }
5576
5577 let mut new_selections_by_buffer = HashMap::default();
5578 for selection in editor.local_selections::<usize>(cx) {
5579 for (buffer, mut range) in
5580 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5581 {
5582 if selection.reversed {
5583 mem::swap(&mut range.start, &mut range.end);
5584 }
5585 new_selections_by_buffer
5586 .entry(buffer)
5587 .or_insert(Vec::new())
5588 .push(range)
5589 }
5590 }
5591
5592 editor_handle.update(cx, |editor, cx| {
5593 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5594 });
5595 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5596 nav_history.borrow_mut().disable();
5597
5598 // We defer the pane interaction because we ourselves are a workspace item
5599 // and activating a new item causes the pane to call a method on us reentrantly,
5600 // which panics if we're on the stack.
5601 cx.defer(move |workspace, cx| {
5602 workspace.activate_next_pane(cx);
5603
5604 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5605 let editor = workspace.open_project_item::<Self>(buffer, cx);
5606 editor.update(cx, |editor, cx| {
5607 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5608 });
5609 }
5610
5611 nav_history.borrow_mut().enable();
5612 });
5613 }
5614}
5615
5616impl EditorSnapshot {
5617 pub fn is_focused(&self) -> bool {
5618 self.is_focused
5619 }
5620
5621 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5622 self.placeholder_text.as_ref()
5623 }
5624
5625 pub fn scroll_position(&self) -> Vector2F {
5626 compute_scroll_position(
5627 &self.display_snapshot,
5628 self.scroll_position,
5629 &self.scroll_top_anchor,
5630 )
5631 }
5632}
5633
5634impl Deref for EditorSnapshot {
5635 type Target = DisplaySnapshot;
5636
5637 fn deref(&self) -> &Self::Target {
5638 &self.display_snapshot
5639 }
5640}
5641
5642fn compute_scroll_position(
5643 snapshot: &DisplaySnapshot,
5644 mut scroll_position: Vector2F,
5645 scroll_top_anchor: &Anchor,
5646) -> Vector2F {
5647 if *scroll_top_anchor != Anchor::min() {
5648 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5649 scroll_position.set_y(scroll_top + scroll_position.y());
5650 } else {
5651 scroll_position.set_y(0.);
5652 }
5653 scroll_position
5654}
5655
5656#[derive(Copy, Clone)]
5657pub enum Event {
5658 Activate,
5659 BufferEdited,
5660 Blurred,
5661 Dirtied,
5662 Saved,
5663 TitleChanged,
5664 SelectionsChanged { local: bool },
5665 ScrollPositionChanged { local: bool },
5666 Closed,
5667}
5668
5669pub struct EditorFocused(pub ViewHandle<Editor>);
5670pub struct EditorBlurred(pub ViewHandle<Editor>);
5671pub struct EditorReleased(pub WeakViewHandle<Editor>);
5672
5673impl Entity for Editor {
5674 type Event = Event;
5675
5676 fn release(&mut self, cx: &mut MutableAppContext) {
5677 cx.emit_global(EditorReleased(self.handle.clone()));
5678 }
5679}
5680
5681impl View for Editor {
5682 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5683 let style = self.style(cx);
5684 self.display_map.update(cx, |map, cx| {
5685 map.set_font(style.text.font_id, style.text.font_size, cx)
5686 });
5687 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5688 }
5689
5690 fn ui_name() -> &'static str {
5691 "Editor"
5692 }
5693
5694 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5695 let focused_event = EditorFocused(cx.handle());
5696 cx.emit_global(focused_event);
5697 if let Some(rename) = self.pending_rename.as_ref() {
5698 cx.focus(&rename.editor);
5699 } else {
5700 self.focused = true;
5701 self.blink_cursors(self.blink_epoch, cx);
5702 self.buffer.update(cx, |buffer, cx| {
5703 buffer.finalize_last_transaction(cx);
5704 if self.leader_replica_id.is_none() {
5705 buffer.set_active_selections(&self.selections, cx);
5706 }
5707 });
5708 }
5709 }
5710
5711 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5712 let blurred_event = EditorBlurred(cx.handle());
5713 cx.emit_global(blurred_event);
5714 self.focused = false;
5715 self.buffer
5716 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5717 self.hide_context_menu(cx);
5718 cx.emit(Event::Blurred);
5719 cx.notify();
5720 }
5721
5722 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5723 let mut cx = Self::default_keymap_context();
5724 let mode = match self.mode {
5725 EditorMode::SingleLine => "single_line",
5726 EditorMode::AutoHeight { .. } => "auto_height",
5727 EditorMode::Full => "full",
5728 };
5729 cx.map.insert("mode".into(), mode.into());
5730 if self.pending_rename.is_some() {
5731 cx.set.insert("renaming".into());
5732 }
5733 match self.context_menu.as_ref() {
5734 Some(ContextMenu::Completions(_)) => {
5735 cx.set.insert("showing_completions".into());
5736 }
5737 Some(ContextMenu::CodeActions(_)) => {
5738 cx.set.insert("showing_code_actions".into());
5739 }
5740 None => {}
5741 }
5742 cx
5743 }
5744}
5745
5746fn build_style(
5747 settings: &Settings,
5748 get_field_editor_theme: Option<GetFieldEditorTheme>,
5749 override_text_style: Option<&OverrideTextStyle>,
5750 cx: &AppContext,
5751) -> EditorStyle {
5752 let font_cache = cx.font_cache();
5753
5754 let mut theme = settings.theme.editor.clone();
5755 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5756 let field_editor_theme = get_field_editor_theme(&settings.theme);
5757 theme.text_color = field_editor_theme.text.color;
5758 theme.selection = field_editor_theme.selection;
5759 theme.background = field_editor_theme
5760 .container
5761 .background_color
5762 .unwrap_or_default();
5763 EditorStyle {
5764 text: field_editor_theme.text,
5765 placeholder_text: field_editor_theme.placeholder_text,
5766 theme,
5767 }
5768 } else {
5769 let font_family_id = settings.buffer_font_family;
5770 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5771 let font_properties = Default::default();
5772 let font_id = font_cache
5773 .select_font(font_family_id, &font_properties)
5774 .unwrap();
5775 let font_size = settings.buffer_font_size;
5776 EditorStyle {
5777 text: TextStyle {
5778 color: settings.theme.editor.text_color,
5779 font_family_name,
5780 font_family_id,
5781 font_id,
5782 font_size,
5783 font_properties,
5784 underline: Default::default(),
5785 },
5786 placeholder_text: None,
5787 theme,
5788 }
5789 };
5790
5791 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5792 if let Some(highlighted) = style
5793 .text
5794 .clone()
5795 .highlight(highlight_style, font_cache)
5796 .log_err()
5797 {
5798 style.text = highlighted;
5799 }
5800 }
5801
5802 style
5803}
5804
5805trait SelectionExt {
5806 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5807 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5808 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5809 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5810 -> Range<u32>;
5811}
5812
5813impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5814 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5815 let start = self.start.to_point(buffer);
5816 let end = self.end.to_point(buffer);
5817 if self.reversed {
5818 end..start
5819 } else {
5820 start..end
5821 }
5822 }
5823
5824 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5825 let start = self.start.to_offset(buffer);
5826 let end = self.end.to_offset(buffer);
5827 if self.reversed {
5828 end..start
5829 } else {
5830 start..end
5831 }
5832 }
5833
5834 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5835 let start = self
5836 .start
5837 .to_point(&map.buffer_snapshot)
5838 .to_display_point(map);
5839 let end = self
5840 .end
5841 .to_point(&map.buffer_snapshot)
5842 .to_display_point(map);
5843 if self.reversed {
5844 end..start
5845 } else {
5846 start..end
5847 }
5848 }
5849
5850 fn spanned_rows(
5851 &self,
5852 include_end_if_at_line_start: bool,
5853 map: &DisplaySnapshot,
5854 ) -> Range<u32> {
5855 let start = self.start.to_point(&map.buffer_snapshot);
5856 let mut end = self.end.to_point(&map.buffer_snapshot);
5857 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5858 end.row -= 1;
5859 }
5860
5861 let buffer_start = map.prev_line_boundary(start).0;
5862 let buffer_end = map.next_line_boundary(end).0;
5863 buffer_start.row..buffer_end.row + 1
5864 }
5865}
5866
5867impl<T: InvalidationRegion> InvalidationStack<T> {
5868 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5869 where
5870 S: Clone + ToOffset,
5871 {
5872 while let Some(region) = self.last() {
5873 let all_selections_inside_invalidation_ranges =
5874 if selections.len() == region.ranges().len() {
5875 selections
5876 .iter()
5877 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5878 .all(|(selection, invalidation_range)| {
5879 let head = selection.head().to_offset(&buffer);
5880 invalidation_range.start <= head && invalidation_range.end >= head
5881 })
5882 } else {
5883 false
5884 };
5885
5886 if all_selections_inside_invalidation_ranges {
5887 break;
5888 } else {
5889 self.pop();
5890 }
5891 }
5892 }
5893}
5894
5895impl<T> Default for InvalidationStack<T> {
5896 fn default() -> Self {
5897 Self(Default::default())
5898 }
5899}
5900
5901impl<T> Deref for InvalidationStack<T> {
5902 type Target = Vec<T>;
5903
5904 fn deref(&self) -> &Self::Target {
5905 &self.0
5906 }
5907}
5908
5909impl<T> DerefMut for InvalidationStack<T> {
5910 fn deref_mut(&mut self) -> &mut Self::Target {
5911 &mut self.0
5912 }
5913}
5914
5915impl InvalidationRegion for BracketPairState {
5916 fn ranges(&self) -> &[Range<Anchor>] {
5917 &self.ranges
5918 }
5919}
5920
5921impl InvalidationRegion for SnippetState {
5922 fn ranges(&self) -> &[Range<Anchor>] {
5923 &self.ranges[self.active_index]
5924 }
5925}
5926
5927impl Deref for EditorStyle {
5928 type Target = theme::Editor;
5929
5930 fn deref(&self) -> &Self::Target {
5931 &self.theme
5932 }
5933}
5934
5935pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5936 let mut highlighted_lines = Vec::new();
5937 for line in diagnostic.message.lines() {
5938 highlighted_lines.push(highlight_diagnostic_message(line));
5939 }
5940
5941 Arc::new(move |cx: &BlockContext| {
5942 let settings = cx.global::<Settings>();
5943 let theme = &settings.theme.editor;
5944 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5945 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5946 Flex::column()
5947 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5948 Label::new(
5949 line.clone(),
5950 style.message.clone().with_font_size(font_size),
5951 )
5952 .with_highlights(highlights.clone())
5953 .contained()
5954 .with_margin_left(cx.anchor_x)
5955 .boxed()
5956 }))
5957 .aligned()
5958 .left()
5959 .boxed()
5960 })
5961}
5962
5963pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5964 let mut message_without_backticks = String::new();
5965 let mut prev_offset = 0;
5966 let mut inside_block = false;
5967 let mut highlights = Vec::new();
5968 for (match_ix, (offset, _)) in message
5969 .match_indices('`')
5970 .chain([(message.len(), "")])
5971 .enumerate()
5972 {
5973 message_without_backticks.push_str(&message[prev_offset..offset]);
5974 if inside_block {
5975 highlights.extend(prev_offset - match_ix..offset - match_ix);
5976 }
5977
5978 inside_block = !inside_block;
5979 prev_offset = offset + 1;
5980 }
5981
5982 (message_without_backticks, highlights)
5983}
5984
5985pub fn diagnostic_style(
5986 severity: DiagnosticSeverity,
5987 valid: bool,
5988 theme: &theme::Editor,
5989) -> DiagnosticStyle {
5990 match (severity, valid) {
5991 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5992 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5993 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5994 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5995 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5996 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5997 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5998 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5999 _ => theme.invalid_hint_diagnostic.clone(),
6000 }
6001}
6002
6003pub fn combine_syntax_and_fuzzy_match_highlights(
6004 text: &str,
6005 default_style: HighlightStyle,
6006 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6007 match_indices: &[usize],
6008) -> Vec<(Range<usize>, HighlightStyle)> {
6009 let mut result = Vec::new();
6010 let mut match_indices = match_indices.iter().copied().peekable();
6011
6012 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6013 {
6014 syntax_highlight.weight = None;
6015
6016 // Add highlights for any fuzzy match characters before the next
6017 // syntax highlight range.
6018 while let Some(&match_index) = match_indices.peek() {
6019 if match_index >= range.start {
6020 break;
6021 }
6022 match_indices.next();
6023 let end_index = char_ix_after(match_index, text);
6024 let mut match_style = default_style;
6025 match_style.weight = Some(fonts::Weight::BOLD);
6026 result.push((match_index..end_index, match_style));
6027 }
6028
6029 if range.start == usize::MAX {
6030 break;
6031 }
6032
6033 // Add highlights for any fuzzy match characters within the
6034 // syntax highlight range.
6035 let mut offset = range.start;
6036 while let Some(&match_index) = match_indices.peek() {
6037 if match_index >= range.end {
6038 break;
6039 }
6040
6041 match_indices.next();
6042 if match_index > offset {
6043 result.push((offset..match_index, syntax_highlight));
6044 }
6045
6046 let mut end_index = char_ix_after(match_index, text);
6047 while let Some(&next_match_index) = match_indices.peek() {
6048 if next_match_index == end_index && next_match_index < range.end {
6049 end_index = char_ix_after(next_match_index, text);
6050 match_indices.next();
6051 } else {
6052 break;
6053 }
6054 }
6055
6056 let mut match_style = syntax_highlight;
6057 match_style.weight = Some(fonts::Weight::BOLD);
6058 result.push((match_index..end_index, match_style));
6059 offset = end_index;
6060 }
6061
6062 if offset < range.end {
6063 result.push((offset..range.end, syntax_highlight));
6064 }
6065 }
6066
6067 fn char_ix_after(ix: usize, text: &str) -> usize {
6068 ix + text[ix..].chars().next().unwrap().len_utf8()
6069 }
6070
6071 result
6072}
6073
6074pub fn styled_runs_for_code_label<'a>(
6075 label: &'a CodeLabel,
6076 syntax_theme: &'a theme::SyntaxTheme,
6077) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6078 let fade_out = HighlightStyle {
6079 fade_out: Some(0.35),
6080 ..Default::default()
6081 };
6082
6083 let mut prev_end = label.filter_range.end;
6084 label
6085 .runs
6086 .iter()
6087 .enumerate()
6088 .flat_map(move |(ix, (range, highlight_id))| {
6089 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6090 style
6091 } else {
6092 return Default::default();
6093 };
6094 let mut muted_style = style.clone();
6095 muted_style.highlight(fade_out);
6096
6097 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6098 if range.start >= label.filter_range.end {
6099 if range.start > prev_end {
6100 runs.push((prev_end..range.start, fade_out));
6101 }
6102 runs.push((range.clone(), muted_style));
6103 } else if range.end <= label.filter_range.end {
6104 runs.push((range.clone(), style));
6105 } else {
6106 runs.push((range.start..label.filter_range.end, style));
6107 runs.push((label.filter_range.end..range.end, muted_style));
6108 }
6109 prev_end = cmp::max(prev_end, range.end);
6110
6111 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6112 runs.push((prev_end..label.text.len(), fade_out));
6113 }
6114
6115 runs
6116 })
6117}
6118
6119#[cfg(test)]
6120mod tests {
6121 use crate::test::marked_text_by;
6122
6123 use super::*;
6124 use gpui::{
6125 geometry::rect::RectF,
6126 platform::{WindowBounds, WindowOptions},
6127 };
6128 use language::{LanguageConfig, LanguageServerConfig};
6129 use lsp::FakeLanguageServer;
6130 use project::FakeFs;
6131 use smol::stream::StreamExt;
6132 use std::{cell::RefCell, rc::Rc, time::Instant};
6133 use text::Point;
6134 use unindent::Unindent;
6135 use util::test::sample_text;
6136 use workspace::FollowableItem;
6137
6138 #[gpui::test]
6139 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6140 populate_settings(cx);
6141 let mut now = Instant::now();
6142 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6143 let group_interval = buffer.read(cx).transaction_group_interval();
6144 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6145 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6146
6147 editor.update(cx, |editor, cx| {
6148 editor.start_transaction_at(now, cx);
6149 editor.select_ranges([2..4], None, cx);
6150 editor.insert("cd", cx);
6151 editor.end_transaction_at(now, cx);
6152 assert_eq!(editor.text(cx), "12cd56");
6153 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6154
6155 editor.start_transaction_at(now, cx);
6156 editor.select_ranges([4..5], None, cx);
6157 editor.insert("e", cx);
6158 editor.end_transaction_at(now, cx);
6159 assert_eq!(editor.text(cx), "12cde6");
6160 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6161
6162 now += group_interval + Duration::from_millis(1);
6163 editor.select_ranges([2..2], None, cx);
6164
6165 // Simulate an edit in another editor
6166 buffer.update(cx, |buffer, cx| {
6167 buffer.start_transaction_at(now, cx);
6168 buffer.edit([0..1], "a", cx);
6169 buffer.edit([1..1], "b", cx);
6170 buffer.end_transaction_at(now, cx);
6171 });
6172
6173 assert_eq!(editor.text(cx), "ab2cde6");
6174 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6175
6176 // Last transaction happened past the group interval in a different editor.
6177 // Undo it individually and don't restore selections.
6178 editor.undo(&Undo, cx);
6179 assert_eq!(editor.text(cx), "12cde6");
6180 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6181
6182 // First two transactions happened within the group interval in this editor.
6183 // Undo them together and restore selections.
6184 editor.undo(&Undo, cx);
6185 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6186 assert_eq!(editor.text(cx), "123456");
6187 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6188
6189 // Redo the first two transactions together.
6190 editor.redo(&Redo, cx);
6191 assert_eq!(editor.text(cx), "12cde6");
6192 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6193
6194 // Redo the last transaction on its own.
6195 editor.redo(&Redo, cx);
6196 assert_eq!(editor.text(cx), "ab2cde6");
6197 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6198
6199 // Test empty transactions.
6200 editor.start_transaction_at(now, cx);
6201 editor.end_transaction_at(now, cx);
6202 editor.undo(&Undo, cx);
6203 assert_eq!(editor.text(cx), "12cde6");
6204 });
6205 }
6206
6207 #[gpui::test]
6208 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6209 populate_settings(cx);
6210
6211 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6212 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6213 editor.update(cx, |view, cx| {
6214 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6215 });
6216 assert_eq!(
6217 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6218 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6219 );
6220
6221 editor.update(cx, |view, cx| {
6222 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6223 });
6224
6225 assert_eq!(
6226 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6227 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6228 );
6229
6230 editor.update(cx, |view, cx| {
6231 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6232 });
6233
6234 assert_eq!(
6235 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6236 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6237 );
6238
6239 editor.update(cx, |view, cx| {
6240 view.end_selection(cx);
6241 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6242 });
6243
6244 assert_eq!(
6245 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6246 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6247 );
6248
6249 editor.update(cx, |view, cx| {
6250 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6251 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6252 });
6253
6254 assert_eq!(
6255 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6256 [
6257 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6258 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6259 ]
6260 );
6261
6262 editor.update(cx, |view, cx| {
6263 view.end_selection(cx);
6264 });
6265
6266 assert_eq!(
6267 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6268 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6269 );
6270 }
6271
6272 #[gpui::test]
6273 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6274 populate_settings(cx);
6275 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6276 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6277
6278 view.update(cx, |view, cx| {
6279 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6280 assert_eq!(
6281 view.selected_display_ranges(cx),
6282 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6283 );
6284 });
6285
6286 view.update(cx, |view, cx| {
6287 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6288 assert_eq!(
6289 view.selected_display_ranges(cx),
6290 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6291 );
6292 });
6293
6294 view.update(cx, |view, cx| {
6295 view.cancel(&Cancel, cx);
6296 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6297 assert_eq!(
6298 view.selected_display_ranges(cx),
6299 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6300 );
6301 });
6302 }
6303
6304 #[gpui::test]
6305 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6306 populate_settings(cx);
6307 use workspace::Item;
6308 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6309 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6310
6311 cx.add_window(Default::default(), |cx| {
6312 let mut editor = build_editor(buffer.clone(), cx);
6313 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6314
6315 // Move the cursor a small distance.
6316 // Nothing is added to the navigation history.
6317 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6318 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6319 assert!(nav_history.borrow_mut().pop_backward().is_none());
6320
6321 // Move the cursor a large distance.
6322 // The history can jump back to the previous position.
6323 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6324 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6325 editor.navigate(nav_entry.data.unwrap(), cx);
6326 assert_eq!(nav_entry.item.id(), cx.view_id());
6327 assert_eq!(
6328 editor.selected_display_ranges(cx),
6329 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6330 );
6331 assert!(nav_history.borrow_mut().pop_backward().is_none());
6332
6333 // Move the cursor a small distance via the mouse.
6334 // Nothing is added to the navigation history.
6335 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6336 editor.end_selection(cx);
6337 assert_eq!(
6338 editor.selected_display_ranges(cx),
6339 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6340 );
6341 assert!(nav_history.borrow_mut().pop_backward().is_none());
6342
6343 // Move the cursor a large distance via the mouse.
6344 // The history can jump back to the previous position.
6345 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6346 editor.end_selection(cx);
6347 assert_eq!(
6348 editor.selected_display_ranges(cx),
6349 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6350 );
6351 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6352 editor.navigate(nav_entry.data.unwrap(), cx);
6353 assert_eq!(nav_entry.item.id(), cx.view_id());
6354 assert_eq!(
6355 editor.selected_display_ranges(cx),
6356 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6357 );
6358 assert!(nav_history.borrow_mut().pop_backward().is_none());
6359
6360 editor
6361 });
6362 }
6363
6364 #[gpui::test]
6365 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6366 populate_settings(cx);
6367 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6368 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6369
6370 view.update(cx, |view, cx| {
6371 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6372 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6373 view.end_selection(cx);
6374
6375 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6376 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6377 view.end_selection(cx);
6378 assert_eq!(
6379 view.selected_display_ranges(cx),
6380 [
6381 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6382 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6383 ]
6384 );
6385 });
6386
6387 view.update(cx, |view, cx| {
6388 view.cancel(&Cancel, cx);
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6392 );
6393 });
6394
6395 view.update(cx, |view, cx| {
6396 view.cancel(&Cancel, cx);
6397 assert_eq!(
6398 view.selected_display_ranges(cx),
6399 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6400 );
6401 });
6402 }
6403
6404 #[gpui::test]
6405 fn test_fold(cx: &mut gpui::MutableAppContext) {
6406 populate_settings(cx);
6407 let buffer = MultiBuffer::build_simple(
6408 &"
6409 impl Foo {
6410 // Hello!
6411
6412 fn a() {
6413 1
6414 }
6415
6416 fn b() {
6417 2
6418 }
6419
6420 fn c() {
6421 3
6422 }
6423 }
6424 "
6425 .unindent(),
6426 cx,
6427 );
6428 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6429
6430 view.update(cx, |view, cx| {
6431 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6432 view.fold(&Fold, cx);
6433 assert_eq!(
6434 view.display_text(cx),
6435 "
6436 impl Foo {
6437 // Hello!
6438
6439 fn a() {
6440 1
6441 }
6442
6443 fn b() {…
6444 }
6445
6446 fn c() {…
6447 }
6448 }
6449 "
6450 .unindent(),
6451 );
6452
6453 view.fold(&Fold, cx);
6454 assert_eq!(
6455 view.display_text(cx),
6456 "
6457 impl Foo {…
6458 }
6459 "
6460 .unindent(),
6461 );
6462
6463 view.unfold(&Unfold, cx);
6464 assert_eq!(
6465 view.display_text(cx),
6466 "
6467 impl Foo {
6468 // Hello!
6469
6470 fn a() {
6471 1
6472 }
6473
6474 fn b() {…
6475 }
6476
6477 fn c() {…
6478 }
6479 }
6480 "
6481 .unindent(),
6482 );
6483
6484 view.unfold(&Unfold, cx);
6485 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6486 });
6487 }
6488
6489 #[gpui::test]
6490 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6491 populate_settings(cx);
6492 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6493 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6494
6495 buffer.update(cx, |buffer, cx| {
6496 buffer.edit(
6497 vec![
6498 Point::new(1, 0)..Point::new(1, 0),
6499 Point::new(1, 1)..Point::new(1, 1),
6500 ],
6501 "\t",
6502 cx,
6503 );
6504 });
6505
6506 view.update(cx, |view, cx| {
6507 assert_eq!(
6508 view.selected_display_ranges(cx),
6509 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6510 );
6511
6512 view.move_down(&MoveDown, cx);
6513 assert_eq!(
6514 view.selected_display_ranges(cx),
6515 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6516 );
6517
6518 view.move_right(&MoveRight, cx);
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6522 );
6523
6524 view.move_left(&MoveLeft, cx);
6525 assert_eq!(
6526 view.selected_display_ranges(cx),
6527 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6528 );
6529
6530 view.move_up(&MoveUp, cx);
6531 assert_eq!(
6532 view.selected_display_ranges(cx),
6533 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6534 );
6535
6536 view.move_to_end(&MoveToEnd, cx);
6537 assert_eq!(
6538 view.selected_display_ranges(cx),
6539 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6540 );
6541
6542 view.move_to_beginning(&MoveToBeginning, cx);
6543 assert_eq!(
6544 view.selected_display_ranges(cx),
6545 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6546 );
6547
6548 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6549 view.select_to_beginning(&SelectToBeginning, cx);
6550 assert_eq!(
6551 view.selected_display_ranges(cx),
6552 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6553 );
6554
6555 view.select_to_end(&SelectToEnd, cx);
6556 assert_eq!(
6557 view.selected_display_ranges(cx),
6558 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6559 );
6560 });
6561 }
6562
6563 #[gpui::test]
6564 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6565 populate_settings(cx);
6566 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6567 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6568
6569 assert_eq!('ⓐ'.len_utf8(), 3);
6570 assert_eq!('α'.len_utf8(), 2);
6571
6572 view.update(cx, |view, cx| {
6573 view.fold_ranges(
6574 vec![
6575 Point::new(0, 6)..Point::new(0, 12),
6576 Point::new(1, 2)..Point::new(1, 4),
6577 Point::new(2, 4)..Point::new(2, 8),
6578 ],
6579 cx,
6580 );
6581 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6582
6583 view.move_right(&MoveRight, cx);
6584 assert_eq!(
6585 view.selected_display_ranges(cx),
6586 &[empty_range(0, "ⓐ".len())]
6587 );
6588 view.move_right(&MoveRight, cx);
6589 assert_eq!(
6590 view.selected_display_ranges(cx),
6591 &[empty_range(0, "ⓐⓑ".len())]
6592 );
6593 view.move_right(&MoveRight, cx);
6594 assert_eq!(
6595 view.selected_display_ranges(cx),
6596 &[empty_range(0, "ⓐⓑ…".len())]
6597 );
6598
6599 view.move_down(&MoveDown, cx);
6600 assert_eq!(
6601 view.selected_display_ranges(cx),
6602 &[empty_range(1, "ab…".len())]
6603 );
6604 view.move_left(&MoveLeft, cx);
6605 assert_eq!(
6606 view.selected_display_ranges(cx),
6607 &[empty_range(1, "ab".len())]
6608 );
6609 view.move_left(&MoveLeft, cx);
6610 assert_eq!(
6611 view.selected_display_ranges(cx),
6612 &[empty_range(1, "a".len())]
6613 );
6614
6615 view.move_down(&MoveDown, cx);
6616 assert_eq!(
6617 view.selected_display_ranges(cx),
6618 &[empty_range(2, "α".len())]
6619 );
6620 view.move_right(&MoveRight, cx);
6621 assert_eq!(
6622 view.selected_display_ranges(cx),
6623 &[empty_range(2, "αβ".len())]
6624 );
6625 view.move_right(&MoveRight, cx);
6626 assert_eq!(
6627 view.selected_display_ranges(cx),
6628 &[empty_range(2, "αβ…".len())]
6629 );
6630 view.move_right(&MoveRight, cx);
6631 assert_eq!(
6632 view.selected_display_ranges(cx),
6633 &[empty_range(2, "αβ…ε".len())]
6634 );
6635
6636 view.move_up(&MoveUp, cx);
6637 assert_eq!(
6638 view.selected_display_ranges(cx),
6639 &[empty_range(1, "ab…e".len())]
6640 );
6641 view.move_up(&MoveUp, cx);
6642 assert_eq!(
6643 view.selected_display_ranges(cx),
6644 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6645 );
6646 view.move_left(&MoveLeft, cx);
6647 assert_eq!(
6648 view.selected_display_ranges(cx),
6649 &[empty_range(0, "ⓐⓑ…".len())]
6650 );
6651 view.move_left(&MoveLeft, cx);
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 &[empty_range(0, "ⓐⓑ".len())]
6655 );
6656 view.move_left(&MoveLeft, cx);
6657 assert_eq!(
6658 view.selected_display_ranges(cx),
6659 &[empty_range(0, "ⓐ".len())]
6660 );
6661 });
6662 }
6663
6664 #[gpui::test]
6665 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6666 populate_settings(cx);
6667 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6668 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6669 view.update(cx, |view, cx| {
6670 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6671 view.move_down(&MoveDown, cx);
6672 assert_eq!(
6673 view.selected_display_ranges(cx),
6674 &[empty_range(1, "abcd".len())]
6675 );
6676
6677 view.move_down(&MoveDown, cx);
6678 assert_eq!(
6679 view.selected_display_ranges(cx),
6680 &[empty_range(2, "αβγ".len())]
6681 );
6682
6683 view.move_down(&MoveDown, cx);
6684 assert_eq!(
6685 view.selected_display_ranges(cx),
6686 &[empty_range(3, "abcd".len())]
6687 );
6688
6689 view.move_down(&MoveDown, cx);
6690 assert_eq!(
6691 view.selected_display_ranges(cx),
6692 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6693 );
6694
6695 view.move_up(&MoveUp, cx);
6696 assert_eq!(
6697 view.selected_display_ranges(cx),
6698 &[empty_range(3, "abcd".len())]
6699 );
6700
6701 view.move_up(&MoveUp, cx);
6702 assert_eq!(
6703 view.selected_display_ranges(cx),
6704 &[empty_range(2, "αβγ".len())]
6705 );
6706 });
6707 }
6708
6709 #[gpui::test]
6710 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6711 populate_settings(cx);
6712 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6713 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6714 view.update(cx, |view, cx| {
6715 view.select_display_ranges(
6716 &[
6717 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6718 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6719 ],
6720 cx,
6721 );
6722 });
6723
6724 view.update(cx, |view, cx| {
6725 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6726 assert_eq!(
6727 view.selected_display_ranges(cx),
6728 &[
6729 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6730 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6731 ]
6732 );
6733 });
6734
6735 view.update(cx, |view, cx| {
6736 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6737 assert_eq!(
6738 view.selected_display_ranges(cx),
6739 &[
6740 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6741 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6742 ]
6743 );
6744 });
6745
6746 view.update(cx, |view, cx| {
6747 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6748 assert_eq!(
6749 view.selected_display_ranges(cx),
6750 &[
6751 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6752 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6753 ]
6754 );
6755 });
6756
6757 view.update(cx, |view, cx| {
6758 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6759 assert_eq!(
6760 view.selected_display_ranges(cx),
6761 &[
6762 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6763 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6764 ]
6765 );
6766 });
6767
6768 // Moving to the end of line again is a no-op.
6769 view.update(cx, |view, cx| {
6770 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6771 assert_eq!(
6772 view.selected_display_ranges(cx),
6773 &[
6774 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6775 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6776 ]
6777 );
6778 });
6779
6780 view.update(cx, |view, cx| {
6781 view.move_left(&MoveLeft, cx);
6782 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6783 assert_eq!(
6784 view.selected_display_ranges(cx),
6785 &[
6786 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6787 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6788 ]
6789 );
6790 });
6791
6792 view.update(cx, |view, cx| {
6793 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6794 assert_eq!(
6795 view.selected_display_ranges(cx),
6796 &[
6797 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6798 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6799 ]
6800 );
6801 });
6802
6803 view.update(cx, |view, cx| {
6804 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6805 assert_eq!(
6806 view.selected_display_ranges(cx),
6807 &[
6808 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6809 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6810 ]
6811 );
6812 });
6813
6814 view.update(cx, |view, cx| {
6815 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6816 assert_eq!(
6817 view.selected_display_ranges(cx),
6818 &[
6819 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6820 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6821 ]
6822 );
6823 });
6824
6825 view.update(cx, |view, cx| {
6826 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6827 assert_eq!(view.display_text(cx), "ab\n de");
6828 assert_eq!(
6829 view.selected_display_ranges(cx),
6830 &[
6831 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6832 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6833 ]
6834 );
6835 });
6836
6837 view.update(cx, |view, cx| {
6838 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6839 assert_eq!(view.display_text(cx), "\n");
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[
6843 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6844 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6845 ]
6846 );
6847 });
6848 }
6849
6850 #[gpui::test]
6851 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6852 populate_settings(cx);
6853 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6854 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6855 view.update(cx, |view, cx| {
6856 view.select_display_ranges(
6857 &[
6858 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6859 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6860 ],
6861 cx,
6862 );
6863
6864 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6865 assert_selection_ranges(
6866 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6867 vec![('<', '>'), ('[', ']')],
6868 view,
6869 cx,
6870 );
6871
6872 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6873 assert_selection_ranges(
6874 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
6875 vec![('<', '>'), ('[', ']')],
6876 view,
6877 cx,
6878 );
6879
6880 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6881 assert_selection_ranges(
6882 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
6883 vec![('<', '>'), ('[', ']')],
6884 view,
6885 cx,
6886 );
6887
6888 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6889 assert_selection_ranges(
6890 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
6891 vec![('<', '>'), ('[', ']')],
6892 view,
6893 cx,
6894 );
6895
6896 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6897 assert_selection_ranges(
6898 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
6899 vec![('<', '>'), ('[', ']')],
6900 view,
6901 cx,
6902 );
6903
6904 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6905 assert_selection_ranges(
6906 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
6907 vec![('<', '>'), ('[', ']')],
6908 view,
6909 cx,
6910 );
6911
6912 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6913 assert_selection_ranges(
6914 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
6915 vec![('<', '>'), ('[', ']')],
6916 view,
6917 cx,
6918 );
6919
6920 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6921 assert_selection_ranges(
6922 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6923 vec![('<', '>'), ('[', ']')],
6924 view,
6925 cx,
6926 );
6927
6928 view.move_right(&MoveRight, cx);
6929 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6930 assert_selection_ranges(
6931 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6932 vec![('<', '>'), ('[', ']')],
6933 view,
6934 cx,
6935 );
6936
6937 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6938 assert_selection_ranges(
6939 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
6940 vec![('<', '>'), ('[', ']')],
6941 view,
6942 cx,
6943 );
6944
6945 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
6946 assert_selection_ranges(
6947 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6948 vec![('<', '>'), ('[', ']')],
6949 view,
6950 cx,
6951 );
6952 });
6953 }
6954
6955 #[gpui::test]
6956 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6957 populate_settings(cx);
6958 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6959 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6960
6961 view.update(cx, |view, cx| {
6962 view.set_wrap_width(Some(140.), cx);
6963 assert_eq!(
6964 view.display_text(cx),
6965 "use one::{\n two::three::\n four::five\n};"
6966 );
6967
6968 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6969
6970 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6971 assert_eq!(
6972 view.selected_display_ranges(cx),
6973 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6974 );
6975
6976 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6977 assert_eq!(
6978 view.selected_display_ranges(cx),
6979 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6980 );
6981
6982 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6983 assert_eq!(
6984 view.selected_display_ranges(cx),
6985 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6986 );
6987
6988 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6989 assert_eq!(
6990 view.selected_display_ranges(cx),
6991 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6992 );
6993
6994 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6995 assert_eq!(
6996 view.selected_display_ranges(cx),
6997 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6998 );
6999
7000 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7001 assert_eq!(
7002 view.selected_display_ranges(cx),
7003 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7004 );
7005 });
7006 }
7007
7008 #[gpui::test]
7009 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7010 populate_settings(cx);
7011 let buffer = MultiBuffer::build_simple("one two three four", cx);
7012 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7013
7014 view.update(cx, |view, cx| {
7015 view.select_display_ranges(
7016 &[
7017 // an empty selection - the preceding word fragment is deleted
7018 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7019 // characters selected - they are deleted
7020 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7021 ],
7022 cx,
7023 );
7024 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
7025 });
7026
7027 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7028
7029 view.update(cx, |view, cx| {
7030 view.select_display_ranges(
7031 &[
7032 // an empty selection - the following word fragment is deleted
7033 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7034 // characters selected - they are deleted
7035 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7036 ],
7037 cx,
7038 );
7039 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
7040 });
7041
7042 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7043 }
7044
7045 #[gpui::test]
7046 fn test_newline(cx: &mut gpui::MutableAppContext) {
7047 populate_settings(cx);
7048 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7049 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7050
7051 view.update(cx, |view, cx| {
7052 view.select_display_ranges(
7053 &[
7054 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7055 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7056 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7057 ],
7058 cx,
7059 );
7060
7061 view.newline(&Newline, cx);
7062 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7063 });
7064 }
7065
7066 #[gpui::test]
7067 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7068 populate_settings(cx);
7069 let buffer = MultiBuffer::build_simple(
7070 "
7071 a
7072 b(
7073 X
7074 )
7075 c(
7076 X
7077 )
7078 "
7079 .unindent()
7080 .as_str(),
7081 cx,
7082 );
7083
7084 let (_, editor) = cx.add_window(Default::default(), |cx| {
7085 let mut editor = build_editor(buffer.clone(), cx);
7086 editor.select_ranges(
7087 [
7088 Point::new(2, 4)..Point::new(2, 5),
7089 Point::new(5, 4)..Point::new(5, 5),
7090 ],
7091 None,
7092 cx,
7093 );
7094 editor
7095 });
7096
7097 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7098 buffer.update(cx, |buffer, cx| {
7099 buffer.edit(
7100 [
7101 Point::new(1, 2)..Point::new(3, 0),
7102 Point::new(4, 2)..Point::new(6, 0),
7103 ],
7104 "",
7105 cx,
7106 );
7107 assert_eq!(
7108 buffer.read(cx).text(),
7109 "
7110 a
7111 b()
7112 c()
7113 "
7114 .unindent()
7115 );
7116 });
7117
7118 editor.update(cx, |editor, cx| {
7119 assert_eq!(
7120 editor.selected_ranges(cx),
7121 &[
7122 Point::new(1, 2)..Point::new(1, 2),
7123 Point::new(2, 2)..Point::new(2, 2),
7124 ],
7125 );
7126
7127 editor.newline(&Newline, cx);
7128 assert_eq!(
7129 editor.text(cx),
7130 "
7131 a
7132 b(
7133 )
7134 c(
7135 )
7136 "
7137 .unindent()
7138 );
7139
7140 // The selections are moved after the inserted newlines
7141 assert_eq!(
7142 editor.selected_ranges(cx),
7143 &[
7144 Point::new(2, 0)..Point::new(2, 0),
7145 Point::new(4, 0)..Point::new(4, 0),
7146 ],
7147 );
7148 });
7149 }
7150
7151 #[gpui::test]
7152 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7153 populate_settings(cx);
7154 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7155 let (_, editor) = cx.add_window(Default::default(), |cx| {
7156 let mut editor = build_editor(buffer.clone(), cx);
7157 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7158 editor
7159 });
7160
7161 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7162 buffer.update(cx, |buffer, cx| {
7163 buffer.edit([2..5, 10..13, 18..21], "", cx);
7164 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7165 });
7166
7167 editor.update(cx, |editor, cx| {
7168 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7169
7170 editor.insert("Z", cx);
7171 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7172
7173 // The selections are moved after the inserted characters
7174 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7175 });
7176 }
7177
7178 #[gpui::test]
7179 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7180 populate_settings(cx);
7181 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7182 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7183
7184 view.update(cx, |view, cx| {
7185 // two selections on the same line
7186 view.select_display_ranges(
7187 &[
7188 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7189 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7190 ],
7191 cx,
7192 );
7193
7194 // indent from mid-tabstop to full tabstop
7195 view.tab(&Tab, cx);
7196 assert_eq!(view.text(cx), " one two\nthree\n four");
7197 assert_eq!(
7198 view.selected_display_ranges(cx),
7199 &[
7200 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7201 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7202 ]
7203 );
7204
7205 // outdent from 1 tabstop to 0 tabstops
7206 view.outdent(&Outdent, cx);
7207 assert_eq!(view.text(cx), "one two\nthree\n four");
7208 assert_eq!(
7209 view.selected_display_ranges(cx),
7210 &[
7211 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7212 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7213 ]
7214 );
7215
7216 // select across line ending
7217 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7218
7219 // indent and outdent affect only the preceding line
7220 view.tab(&Tab, cx);
7221 assert_eq!(view.text(cx), "one two\n three\n four");
7222 assert_eq!(
7223 view.selected_display_ranges(cx),
7224 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7225 );
7226 view.outdent(&Outdent, cx);
7227 assert_eq!(view.text(cx), "one two\nthree\n four");
7228 assert_eq!(
7229 view.selected_display_ranges(cx),
7230 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7231 );
7232
7233 // Ensure that indenting/outdenting works when the cursor is at column 0.
7234 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7235 view.tab(&Tab, cx);
7236 assert_eq!(view.text(cx), "one two\n three\n four");
7237 assert_eq!(
7238 view.selected_display_ranges(cx),
7239 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7240 );
7241
7242 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7243 view.outdent(&Outdent, cx);
7244 assert_eq!(view.text(cx), "one two\nthree\n four");
7245 assert_eq!(
7246 view.selected_display_ranges(cx),
7247 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7248 );
7249 });
7250 }
7251
7252 #[gpui::test]
7253 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7254 populate_settings(cx);
7255 let (_, view) = cx.add_window(Default::default(), |cx| {
7256 build_editor(MultiBuffer::build_simple("", cx), cx)
7257 });
7258
7259 view.update(cx, |view, cx| {
7260 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7261 view.select_display_ranges(
7262 &[
7263 // an empty selection - the preceding character is deleted
7264 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7265 // one character selected - it is deleted
7266 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7267 // a line suffix selected - it is deleted
7268 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7269 ],
7270 cx,
7271 );
7272 view.backspace(&Backspace, cx);
7273 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7274
7275 view.set_text(" one\n two\n three\n four", cx);
7276 view.select_display_ranges(
7277 &[
7278 // cursors at the the end of leading indent - last indent is deleted
7279 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7280 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7281 // cursors inside leading indent - overlapping indent deletions are coalesced
7282 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7283 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7284 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7285 // cursor at the beginning of a line - preceding newline is deleted
7286 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7287 // selection inside leading indent - only the selected character is deleted
7288 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7289 ],
7290 cx,
7291 );
7292 view.backspace(&Backspace, cx);
7293 assert_eq!(view.text(cx), "one\n two\n three four");
7294 });
7295 }
7296
7297 #[gpui::test]
7298 fn test_delete(cx: &mut gpui::MutableAppContext) {
7299 populate_settings(cx);
7300 let buffer =
7301 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7302 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7303
7304 view.update(cx, |view, cx| {
7305 view.select_display_ranges(
7306 &[
7307 // an empty selection - the following character is deleted
7308 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7309 // one character selected - it is deleted
7310 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7311 // a line suffix selected - it is deleted
7312 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7313 ],
7314 cx,
7315 );
7316 view.delete(&Delete, cx);
7317 });
7318
7319 assert_eq!(
7320 buffer.read(cx).read(cx).text(),
7321 "on two three\nfou five six\nseven ten\n"
7322 );
7323 }
7324
7325 #[gpui::test]
7326 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7327 populate_settings(cx);
7328 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7329 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7330 view.update(cx, |view, cx| {
7331 view.select_display_ranges(
7332 &[
7333 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7334 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7335 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7336 ],
7337 cx,
7338 );
7339 view.delete_line(&DeleteLine, cx);
7340 assert_eq!(view.display_text(cx), "ghi");
7341 assert_eq!(
7342 view.selected_display_ranges(cx),
7343 vec![
7344 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7345 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7346 ]
7347 );
7348 });
7349
7350 populate_settings(cx);
7351 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7352 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7353 view.update(cx, |view, cx| {
7354 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7355 view.delete_line(&DeleteLine, cx);
7356 assert_eq!(view.display_text(cx), "ghi\n");
7357 assert_eq!(
7358 view.selected_display_ranges(cx),
7359 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7360 );
7361 });
7362 }
7363
7364 #[gpui::test]
7365 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7366 populate_settings(cx);
7367 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7368 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7369 view.update(cx, |view, cx| {
7370 view.select_display_ranges(
7371 &[
7372 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7373 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7374 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7375 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7376 ],
7377 cx,
7378 );
7379 view.duplicate_line(&DuplicateLine, cx);
7380 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7381 assert_eq!(
7382 view.selected_display_ranges(cx),
7383 vec![
7384 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7385 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7386 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7387 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7388 ]
7389 );
7390 });
7391
7392 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7393 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7394 view.update(cx, |view, cx| {
7395 view.select_display_ranges(
7396 &[
7397 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7398 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7399 ],
7400 cx,
7401 );
7402 view.duplicate_line(&DuplicateLine, cx);
7403 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7404 assert_eq!(
7405 view.selected_display_ranges(cx),
7406 vec![
7407 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7408 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7409 ]
7410 );
7411 });
7412 }
7413
7414 #[gpui::test]
7415 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7416 populate_settings(cx);
7417 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7418 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7419 view.update(cx, |view, cx| {
7420 view.fold_ranges(
7421 vec![
7422 Point::new(0, 2)..Point::new(1, 2),
7423 Point::new(2, 3)..Point::new(4, 1),
7424 Point::new(7, 0)..Point::new(8, 4),
7425 ],
7426 cx,
7427 );
7428 view.select_display_ranges(
7429 &[
7430 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7431 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7432 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7433 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7434 ],
7435 cx,
7436 );
7437 assert_eq!(
7438 view.display_text(cx),
7439 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7440 );
7441
7442 view.move_line_up(&MoveLineUp, cx);
7443 assert_eq!(
7444 view.display_text(cx),
7445 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7446 );
7447 assert_eq!(
7448 view.selected_display_ranges(cx),
7449 vec![
7450 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7451 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7452 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7453 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7454 ]
7455 );
7456 });
7457
7458 view.update(cx, |view, cx| {
7459 view.move_line_down(&MoveLineDown, cx);
7460 assert_eq!(
7461 view.display_text(cx),
7462 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7463 );
7464 assert_eq!(
7465 view.selected_display_ranges(cx),
7466 vec![
7467 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7468 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7469 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7470 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7471 ]
7472 );
7473 });
7474
7475 view.update(cx, |view, cx| {
7476 view.move_line_down(&MoveLineDown, cx);
7477 assert_eq!(
7478 view.display_text(cx),
7479 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7480 );
7481 assert_eq!(
7482 view.selected_display_ranges(cx),
7483 vec![
7484 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7485 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7486 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7487 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7488 ]
7489 );
7490 });
7491
7492 view.update(cx, |view, cx| {
7493 view.move_line_up(&MoveLineUp, cx);
7494 assert_eq!(
7495 view.display_text(cx),
7496 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7497 );
7498 assert_eq!(
7499 view.selected_display_ranges(cx),
7500 vec![
7501 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7502 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7503 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7504 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7505 ]
7506 );
7507 });
7508 }
7509
7510 #[gpui::test]
7511 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7512 populate_settings(cx);
7513 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7514 let snapshot = buffer.read(cx).snapshot(cx);
7515 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7516 editor.update(cx, |editor, cx| {
7517 editor.insert_blocks(
7518 [BlockProperties {
7519 position: snapshot.anchor_after(Point::new(2, 0)),
7520 disposition: BlockDisposition::Below,
7521 height: 1,
7522 render: Arc::new(|_| Empty::new().boxed()),
7523 }],
7524 cx,
7525 );
7526 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7527 editor.move_line_down(&MoveLineDown, cx);
7528 });
7529 }
7530
7531 #[gpui::test]
7532 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7533 populate_settings(cx);
7534 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7535 let view = cx
7536 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7537 .1;
7538
7539 // Cut with three selections. Clipboard text is divided into three slices.
7540 view.update(cx, |view, cx| {
7541 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7542 view.cut(&Cut, cx);
7543 assert_eq!(view.display_text(cx), "two four six ");
7544 });
7545
7546 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7547 view.update(cx, |view, cx| {
7548 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7549 view.paste(&Paste, cx);
7550 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7551 assert_eq!(
7552 view.selected_display_ranges(cx),
7553 &[
7554 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7555 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7556 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7557 ]
7558 );
7559 });
7560
7561 // Paste again but with only two cursors. Since the number of cursors doesn't
7562 // match the number of slices in the clipboard, the entire clipboard text
7563 // is pasted at each cursor.
7564 view.update(cx, |view, cx| {
7565 view.select_ranges(vec![0..0, 31..31], None, cx);
7566 view.handle_input(&Input("( ".into()), cx);
7567 view.paste(&Paste, cx);
7568 view.handle_input(&Input(") ".into()), cx);
7569 assert_eq!(
7570 view.display_text(cx),
7571 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7572 );
7573 });
7574
7575 view.update(cx, |view, cx| {
7576 view.select_ranges(vec![0..0], None, cx);
7577 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7578 assert_eq!(
7579 view.display_text(cx),
7580 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7581 );
7582 });
7583
7584 // Cut with three selections, one of which is full-line.
7585 view.update(cx, |view, cx| {
7586 view.select_display_ranges(
7587 &[
7588 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7589 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7590 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7591 ],
7592 cx,
7593 );
7594 view.cut(&Cut, cx);
7595 assert_eq!(
7596 view.display_text(cx),
7597 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7598 );
7599 });
7600
7601 // Paste with three selections, noticing how the copied selection that was full-line
7602 // gets inserted before the second cursor.
7603 view.update(cx, |view, cx| {
7604 view.select_display_ranges(
7605 &[
7606 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7607 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7608 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7609 ],
7610 cx,
7611 );
7612 view.paste(&Paste, cx);
7613 assert_eq!(
7614 view.display_text(cx),
7615 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7616 );
7617 assert_eq!(
7618 view.selected_display_ranges(cx),
7619 &[
7620 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7621 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7622 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7623 ]
7624 );
7625 });
7626
7627 // Copy with a single cursor only, which writes the whole line into the clipboard.
7628 view.update(cx, |view, cx| {
7629 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7630 view.copy(&Copy, cx);
7631 });
7632
7633 // Paste with three selections, noticing how the copied full-line selection is inserted
7634 // before the empty selections but replaces the selection that is non-empty.
7635 view.update(cx, |view, cx| {
7636 view.select_display_ranges(
7637 &[
7638 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7639 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7640 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7641 ],
7642 cx,
7643 );
7644 view.paste(&Paste, cx);
7645 assert_eq!(
7646 view.display_text(cx),
7647 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7648 );
7649 assert_eq!(
7650 view.selected_display_ranges(cx),
7651 &[
7652 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7653 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7654 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7655 ]
7656 );
7657 });
7658 }
7659
7660 #[gpui::test]
7661 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7662 populate_settings(cx);
7663 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7664 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7665 view.update(cx, |view, cx| {
7666 view.select_all(&SelectAll, cx);
7667 assert_eq!(
7668 view.selected_display_ranges(cx),
7669 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7670 );
7671 });
7672 }
7673
7674 #[gpui::test]
7675 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7676 populate_settings(cx);
7677 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7678 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7679 view.update(cx, |view, cx| {
7680 view.select_display_ranges(
7681 &[
7682 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7683 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7684 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7685 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7686 ],
7687 cx,
7688 );
7689 view.select_line(&SelectLine, cx);
7690 assert_eq!(
7691 view.selected_display_ranges(cx),
7692 vec![
7693 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7694 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7695 ]
7696 );
7697 });
7698
7699 view.update(cx, |view, cx| {
7700 view.select_line(&SelectLine, cx);
7701 assert_eq!(
7702 view.selected_display_ranges(cx),
7703 vec![
7704 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7705 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7706 ]
7707 );
7708 });
7709
7710 view.update(cx, |view, cx| {
7711 view.select_line(&SelectLine, cx);
7712 assert_eq!(
7713 view.selected_display_ranges(cx),
7714 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7715 );
7716 });
7717 }
7718
7719 #[gpui::test]
7720 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7721 populate_settings(cx);
7722 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7723 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7724 view.update(cx, |view, cx| {
7725 view.fold_ranges(
7726 vec![
7727 Point::new(0, 2)..Point::new(1, 2),
7728 Point::new(2, 3)..Point::new(4, 1),
7729 Point::new(7, 0)..Point::new(8, 4),
7730 ],
7731 cx,
7732 );
7733 view.select_display_ranges(
7734 &[
7735 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7736 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7737 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7738 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7739 ],
7740 cx,
7741 );
7742 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7743 });
7744
7745 view.update(cx, |view, cx| {
7746 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7747 assert_eq!(
7748 view.display_text(cx),
7749 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7750 );
7751 assert_eq!(
7752 view.selected_display_ranges(cx),
7753 [
7754 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7755 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7756 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7757 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7758 ]
7759 );
7760 });
7761
7762 view.update(cx, |view, cx| {
7763 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7764 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7765 assert_eq!(
7766 view.display_text(cx),
7767 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7768 );
7769 assert_eq!(
7770 view.selected_display_ranges(cx),
7771 [
7772 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7773 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7774 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7775 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7776 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7777 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7778 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7779 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7780 ]
7781 );
7782 });
7783 }
7784
7785 #[gpui::test]
7786 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7787 populate_settings(cx);
7788 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7789 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7790
7791 view.update(cx, |view, cx| {
7792 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7793 });
7794 view.update(cx, |view, cx| {
7795 view.add_selection_above(&AddSelectionAbove, cx);
7796 assert_eq!(
7797 view.selected_display_ranges(cx),
7798 vec![
7799 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7800 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7801 ]
7802 );
7803 });
7804
7805 view.update(cx, |view, cx| {
7806 view.add_selection_above(&AddSelectionAbove, cx);
7807 assert_eq!(
7808 view.selected_display_ranges(cx),
7809 vec![
7810 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7811 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7812 ]
7813 );
7814 });
7815
7816 view.update(cx, |view, cx| {
7817 view.add_selection_below(&AddSelectionBelow, cx);
7818 assert_eq!(
7819 view.selected_display_ranges(cx),
7820 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7821 );
7822 });
7823
7824 view.update(cx, |view, cx| {
7825 view.add_selection_below(&AddSelectionBelow, cx);
7826 assert_eq!(
7827 view.selected_display_ranges(cx),
7828 vec![
7829 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7830 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7831 ]
7832 );
7833 });
7834
7835 view.update(cx, |view, cx| {
7836 view.add_selection_below(&AddSelectionBelow, cx);
7837 assert_eq!(
7838 view.selected_display_ranges(cx),
7839 vec![
7840 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7841 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7842 ]
7843 );
7844 });
7845
7846 view.update(cx, |view, cx| {
7847 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7848 });
7849 view.update(cx, |view, cx| {
7850 view.add_selection_below(&AddSelectionBelow, cx);
7851 assert_eq!(
7852 view.selected_display_ranges(cx),
7853 vec![
7854 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7855 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7856 ]
7857 );
7858 });
7859
7860 view.update(cx, |view, cx| {
7861 view.add_selection_below(&AddSelectionBelow, cx);
7862 assert_eq!(
7863 view.selected_display_ranges(cx),
7864 vec![
7865 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7866 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7867 ]
7868 );
7869 });
7870
7871 view.update(cx, |view, cx| {
7872 view.add_selection_above(&AddSelectionAbove, cx);
7873 assert_eq!(
7874 view.selected_display_ranges(cx),
7875 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7876 );
7877 });
7878
7879 view.update(cx, |view, cx| {
7880 view.add_selection_above(&AddSelectionAbove, cx);
7881 assert_eq!(
7882 view.selected_display_ranges(cx),
7883 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7884 );
7885 });
7886
7887 view.update(cx, |view, cx| {
7888 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7889 view.add_selection_below(&AddSelectionBelow, cx);
7890 assert_eq!(
7891 view.selected_display_ranges(cx),
7892 vec![
7893 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7894 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7895 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7896 ]
7897 );
7898 });
7899
7900 view.update(cx, |view, cx| {
7901 view.add_selection_below(&AddSelectionBelow, cx);
7902 assert_eq!(
7903 view.selected_display_ranges(cx),
7904 vec![
7905 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7906 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7907 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7908 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7909 ]
7910 );
7911 });
7912
7913 view.update(cx, |view, cx| {
7914 view.add_selection_above(&AddSelectionAbove, cx);
7915 assert_eq!(
7916 view.selected_display_ranges(cx),
7917 vec![
7918 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7919 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7920 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7921 ]
7922 );
7923 });
7924
7925 view.update(cx, |view, cx| {
7926 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7927 });
7928 view.update(cx, |view, cx| {
7929 view.add_selection_above(&AddSelectionAbove, cx);
7930 assert_eq!(
7931 view.selected_display_ranges(cx),
7932 vec![
7933 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7934 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7935 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7936 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7937 ]
7938 );
7939 });
7940
7941 view.update(cx, |view, cx| {
7942 view.add_selection_below(&AddSelectionBelow, cx);
7943 assert_eq!(
7944 view.selected_display_ranges(cx),
7945 vec![
7946 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7947 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7948 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7949 ]
7950 );
7951 });
7952 }
7953
7954 #[gpui::test]
7955 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7956 cx.update(populate_settings);
7957 let language = Arc::new(Language::new(
7958 LanguageConfig::default(),
7959 Some(tree_sitter_rust::language()),
7960 ));
7961
7962 let text = r#"
7963 use mod1::mod2::{mod3, mod4};
7964
7965 fn fn_1(param1: bool, param2: &str) {
7966 let var1 = "text";
7967 }
7968 "#
7969 .unindent();
7970
7971 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7972 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7973 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7974 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7975 .await;
7976
7977 view.update(cx, |view, cx| {
7978 view.select_display_ranges(
7979 &[
7980 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7981 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7982 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7983 ],
7984 cx,
7985 );
7986 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7987 });
7988 assert_eq!(
7989 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7990 &[
7991 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7992 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7993 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7994 ]
7995 );
7996
7997 view.update(cx, |view, cx| {
7998 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7999 });
8000 assert_eq!(
8001 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8002 &[
8003 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8004 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8005 ]
8006 );
8007
8008 view.update(cx, |view, cx| {
8009 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8010 });
8011 assert_eq!(
8012 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8013 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8014 );
8015
8016 // Trying to expand the selected syntax node one more time has no effect.
8017 view.update(cx, |view, cx| {
8018 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8019 });
8020 assert_eq!(
8021 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8022 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8023 );
8024
8025 view.update(cx, |view, cx| {
8026 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8027 });
8028 assert_eq!(
8029 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8030 &[
8031 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8032 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8033 ]
8034 );
8035
8036 view.update(cx, |view, cx| {
8037 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8038 });
8039 assert_eq!(
8040 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8041 &[
8042 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8043 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8044 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8045 ]
8046 );
8047
8048 view.update(cx, |view, cx| {
8049 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8050 });
8051 assert_eq!(
8052 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8053 &[
8054 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8055 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8056 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8057 ]
8058 );
8059
8060 // Trying to shrink the selected syntax node one more time has no effect.
8061 view.update(cx, |view, cx| {
8062 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8063 });
8064 assert_eq!(
8065 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8066 &[
8067 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8068 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8069 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8070 ]
8071 );
8072
8073 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8074 // a fold.
8075 view.update(cx, |view, cx| {
8076 view.fold_ranges(
8077 vec![
8078 Point::new(0, 21)..Point::new(0, 24),
8079 Point::new(3, 20)..Point::new(3, 22),
8080 ],
8081 cx,
8082 );
8083 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8084 });
8085 assert_eq!(
8086 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8087 &[
8088 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8089 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8090 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8091 ]
8092 );
8093 }
8094
8095 #[gpui::test]
8096 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8097 cx.update(populate_settings);
8098 let language = Arc::new(
8099 Language::new(
8100 LanguageConfig {
8101 brackets: vec![
8102 BracketPair {
8103 start: "{".to_string(),
8104 end: "}".to_string(),
8105 close: false,
8106 newline: true,
8107 },
8108 BracketPair {
8109 start: "(".to_string(),
8110 end: ")".to_string(),
8111 close: false,
8112 newline: true,
8113 },
8114 ],
8115 ..Default::default()
8116 },
8117 Some(tree_sitter_rust::language()),
8118 )
8119 .with_indents_query(
8120 r#"
8121 (_ "(" ")" @end) @indent
8122 (_ "{" "}" @end) @indent
8123 "#,
8124 )
8125 .unwrap(),
8126 );
8127
8128 let text = "fn a() {}";
8129
8130 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8131 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8132 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8133 editor
8134 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8135 .await;
8136
8137 editor.update(cx, |editor, cx| {
8138 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8139 editor.newline(&Newline, cx);
8140 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8141 assert_eq!(
8142 editor.selected_ranges(cx),
8143 &[
8144 Point::new(1, 4)..Point::new(1, 4),
8145 Point::new(3, 4)..Point::new(3, 4),
8146 Point::new(5, 0)..Point::new(5, 0)
8147 ]
8148 );
8149 });
8150 }
8151
8152 #[gpui::test]
8153 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8154 cx.update(populate_settings);
8155 let language = Arc::new(Language::new(
8156 LanguageConfig {
8157 brackets: vec![
8158 BracketPair {
8159 start: "{".to_string(),
8160 end: "}".to_string(),
8161 close: true,
8162 newline: true,
8163 },
8164 BracketPair {
8165 start: "/*".to_string(),
8166 end: " */".to_string(),
8167 close: true,
8168 newline: true,
8169 },
8170 ],
8171 autoclose_before: "})]".to_string(),
8172 ..Default::default()
8173 },
8174 Some(tree_sitter_rust::language()),
8175 ));
8176
8177 let text = r#"
8178 a
8179
8180 /
8181
8182 "#
8183 .unindent();
8184
8185 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8186 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8187 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8188 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8189 .await;
8190
8191 view.update(cx, |view, cx| {
8192 view.select_display_ranges(
8193 &[
8194 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8195 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8196 ],
8197 cx,
8198 );
8199
8200 view.handle_input(&Input("{".to_string()), cx);
8201 view.handle_input(&Input("{".to_string()), cx);
8202 view.handle_input(&Input("{".to_string()), cx);
8203 assert_eq!(
8204 view.text(cx),
8205 "
8206 {{{}}}
8207 {{{}}}
8208 /
8209
8210 "
8211 .unindent()
8212 );
8213
8214 view.move_right(&MoveRight, cx);
8215 view.handle_input(&Input("}".to_string()), cx);
8216 view.handle_input(&Input("}".to_string()), cx);
8217 view.handle_input(&Input("}".to_string()), cx);
8218 assert_eq!(
8219 view.text(cx),
8220 "
8221 {{{}}}}
8222 {{{}}}}
8223 /
8224
8225 "
8226 .unindent()
8227 );
8228
8229 view.undo(&Undo, cx);
8230 view.handle_input(&Input("/".to_string()), cx);
8231 view.handle_input(&Input("*".to_string()), cx);
8232 assert_eq!(
8233 view.text(cx),
8234 "
8235 /* */
8236 /* */
8237 /
8238
8239 "
8240 .unindent()
8241 );
8242
8243 view.undo(&Undo, cx);
8244 view.select_display_ranges(
8245 &[
8246 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8247 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8248 ],
8249 cx,
8250 );
8251 view.handle_input(&Input("*".to_string()), cx);
8252 assert_eq!(
8253 view.text(cx),
8254 "
8255 a
8256
8257 /*
8258 *
8259 "
8260 .unindent()
8261 );
8262
8263 // Don't autoclose if the next character isn't whitespace and isn't
8264 // listed in the language's "autoclose_before" section.
8265 view.finalize_last_transaction(cx);
8266 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8267 view.handle_input(&Input("{".to_string()), cx);
8268 assert_eq!(
8269 view.text(cx),
8270 "
8271 {a
8272
8273 /*
8274 *
8275 "
8276 .unindent()
8277 );
8278
8279 view.undo(&Undo, cx);
8280 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8281 view.handle_input(&Input("{".to_string()), cx);
8282 assert_eq!(
8283 view.text(cx),
8284 "
8285 {a}
8286
8287 /*
8288 *
8289 "
8290 .unindent()
8291 );
8292 assert_eq!(
8293 view.selected_display_ranges(cx),
8294 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8295 );
8296 });
8297 }
8298
8299 #[gpui::test]
8300 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8301 cx.update(populate_settings);
8302
8303 let text = "
8304 a. b
8305 a. b
8306 a. b
8307 "
8308 .unindent();
8309 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8310 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8311
8312 editor.update(cx, |editor, cx| {
8313 let buffer = &editor.snapshot(cx).buffer_snapshot;
8314 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8315 let insertion_ranges = [
8316 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8317 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8318 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8319 ];
8320
8321 editor
8322 .insert_snippet(&insertion_ranges, snippet, cx)
8323 .unwrap();
8324 assert_eq!(
8325 editor.text(cx),
8326 "
8327 a.f(one, two, three) b
8328 a.f(one, two, three) b
8329 a.f(one, two, three) b
8330 "
8331 .unindent()
8332 );
8333 assert_eq!(
8334 editor.selected_ranges::<Point>(cx),
8335 &[
8336 Point::new(0, 4)..Point::new(0, 7),
8337 Point::new(0, 14)..Point::new(0, 19),
8338 Point::new(1, 4)..Point::new(1, 7),
8339 Point::new(1, 14)..Point::new(1, 19),
8340 Point::new(2, 4)..Point::new(2, 7),
8341 Point::new(2, 14)..Point::new(2, 19),
8342 ]
8343 );
8344
8345 // Can't move earlier than the first tab stop
8346 editor.move_to_prev_snippet_tabstop(cx);
8347 assert_eq!(
8348 editor.selected_ranges::<Point>(cx),
8349 &[
8350 Point::new(0, 4)..Point::new(0, 7),
8351 Point::new(0, 14)..Point::new(0, 19),
8352 Point::new(1, 4)..Point::new(1, 7),
8353 Point::new(1, 14)..Point::new(1, 19),
8354 Point::new(2, 4)..Point::new(2, 7),
8355 Point::new(2, 14)..Point::new(2, 19),
8356 ]
8357 );
8358
8359 assert!(editor.move_to_next_snippet_tabstop(cx));
8360 assert_eq!(
8361 editor.selected_ranges::<Point>(cx),
8362 &[
8363 Point::new(0, 9)..Point::new(0, 12),
8364 Point::new(1, 9)..Point::new(1, 12),
8365 Point::new(2, 9)..Point::new(2, 12)
8366 ]
8367 );
8368
8369 editor.move_to_prev_snippet_tabstop(cx);
8370 assert_eq!(
8371 editor.selected_ranges::<Point>(cx),
8372 &[
8373 Point::new(0, 4)..Point::new(0, 7),
8374 Point::new(0, 14)..Point::new(0, 19),
8375 Point::new(1, 4)..Point::new(1, 7),
8376 Point::new(1, 14)..Point::new(1, 19),
8377 Point::new(2, 4)..Point::new(2, 7),
8378 Point::new(2, 14)..Point::new(2, 19),
8379 ]
8380 );
8381
8382 assert!(editor.move_to_next_snippet_tabstop(cx));
8383 assert!(editor.move_to_next_snippet_tabstop(cx));
8384 assert_eq!(
8385 editor.selected_ranges::<Point>(cx),
8386 &[
8387 Point::new(0, 20)..Point::new(0, 20),
8388 Point::new(1, 20)..Point::new(1, 20),
8389 Point::new(2, 20)..Point::new(2, 20)
8390 ]
8391 );
8392
8393 // As soon as the last tab stop is reached, snippet state is gone
8394 editor.move_to_prev_snippet_tabstop(cx);
8395 assert_eq!(
8396 editor.selected_ranges::<Point>(cx),
8397 &[
8398 Point::new(0, 20)..Point::new(0, 20),
8399 Point::new(1, 20)..Point::new(1, 20),
8400 Point::new(2, 20)..Point::new(2, 20)
8401 ]
8402 );
8403 });
8404 }
8405
8406 #[gpui::test]
8407 async fn test_completion(cx: &mut gpui::TestAppContext) {
8408 cx.update(populate_settings);
8409
8410 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8411 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8412 completion_provider: Some(lsp::CompletionOptions {
8413 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8414 ..Default::default()
8415 }),
8416 ..Default::default()
8417 });
8418 let language = Arc::new(Language::new(
8419 LanguageConfig {
8420 name: "Rust".into(),
8421 path_suffixes: vec!["rs".to_string()],
8422 language_server: Some(language_server_config),
8423 ..Default::default()
8424 },
8425 Some(tree_sitter_rust::language()),
8426 ));
8427
8428 let text = "
8429 one
8430 two
8431 three
8432 "
8433 .unindent();
8434
8435 let fs = FakeFs::new(cx.background().clone());
8436 fs.insert_file("/file.rs", text).await;
8437
8438 let project = Project::test(fs, cx);
8439 project.update(cx, |project, _| project.languages().add(language));
8440
8441 let worktree_id = project
8442 .update(cx, |project, cx| {
8443 project.find_or_create_local_worktree("/file.rs", true, cx)
8444 })
8445 .await
8446 .unwrap()
8447 .0
8448 .read_with(cx, |tree, _| tree.id());
8449 let buffer = project
8450 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8451 .await
8452 .unwrap();
8453 let mut fake_server = fake_servers.next().await.unwrap();
8454
8455 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8456 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8457
8458 editor.update(cx, |editor, cx| {
8459 editor.project = Some(project);
8460 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8461 editor.handle_input(&Input(".".to_string()), cx);
8462 });
8463
8464 handle_completion_request(
8465 &mut fake_server,
8466 "/file.rs",
8467 Point::new(0, 4),
8468 vec![
8469 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8470 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8471 ],
8472 )
8473 .await;
8474 editor
8475 .condition(&cx, |editor, _| editor.context_menu_visible())
8476 .await;
8477
8478 let apply_additional_edits = editor.update(cx, |editor, cx| {
8479 editor.move_down(&MoveDown, cx);
8480 let apply_additional_edits = editor
8481 .confirm_completion(&ConfirmCompletion(None), cx)
8482 .unwrap();
8483 assert_eq!(
8484 editor.text(cx),
8485 "
8486 one.second_completion
8487 two
8488 three
8489 "
8490 .unindent()
8491 );
8492 apply_additional_edits
8493 });
8494
8495 handle_resolve_completion_request(
8496 &mut fake_server,
8497 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8498 )
8499 .await;
8500 apply_additional_edits.await.unwrap();
8501 assert_eq!(
8502 editor.read_with(cx, |editor, cx| editor.text(cx)),
8503 "
8504 one.second_completion
8505 two
8506 three
8507 additional edit
8508 "
8509 .unindent()
8510 );
8511
8512 editor.update(cx, |editor, cx| {
8513 editor.select_ranges(
8514 [
8515 Point::new(1, 3)..Point::new(1, 3),
8516 Point::new(2, 5)..Point::new(2, 5),
8517 ],
8518 None,
8519 cx,
8520 );
8521
8522 editor.handle_input(&Input(" ".to_string()), cx);
8523 assert!(editor.context_menu.is_none());
8524 editor.handle_input(&Input("s".to_string()), cx);
8525 assert!(editor.context_menu.is_none());
8526 });
8527
8528 handle_completion_request(
8529 &mut fake_server,
8530 "/file.rs",
8531 Point::new(2, 7),
8532 vec![
8533 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8534 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8535 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8536 ],
8537 )
8538 .await;
8539 editor
8540 .condition(&cx, |editor, _| editor.context_menu_visible())
8541 .await;
8542
8543 editor.update(cx, |editor, cx| {
8544 editor.handle_input(&Input("i".to_string()), cx);
8545 });
8546
8547 handle_completion_request(
8548 &mut fake_server,
8549 "/file.rs",
8550 Point::new(2, 8),
8551 vec![
8552 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8553 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8554 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8555 ],
8556 )
8557 .await;
8558 editor
8559 .condition(&cx, |editor, _| editor.context_menu_visible())
8560 .await;
8561
8562 let apply_additional_edits = editor.update(cx, |editor, cx| {
8563 let apply_additional_edits = editor
8564 .confirm_completion(&ConfirmCompletion(None), cx)
8565 .unwrap();
8566 assert_eq!(
8567 editor.text(cx),
8568 "
8569 one.second_completion
8570 two sixth_completion
8571 three sixth_completion
8572 additional edit
8573 "
8574 .unindent()
8575 );
8576 apply_additional_edits
8577 });
8578 handle_resolve_completion_request(&mut fake_server, None).await;
8579 apply_additional_edits.await.unwrap();
8580
8581 async fn handle_completion_request(
8582 fake: &mut FakeLanguageServer,
8583 path: &'static str,
8584 position: Point,
8585 completions: Vec<(Range<Point>, &'static str)>,
8586 ) {
8587 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8588 assert_eq!(
8589 params.text_document_position.text_document.uri,
8590 lsp::Url::from_file_path(path).unwrap()
8591 );
8592 assert_eq!(
8593 params.text_document_position.position,
8594 lsp::Position::new(position.row, position.column)
8595 );
8596 Some(lsp::CompletionResponse::Array(
8597 completions
8598 .iter()
8599 .map(|(range, new_text)| lsp::CompletionItem {
8600 label: new_text.to_string(),
8601 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8602 range: lsp::Range::new(
8603 lsp::Position::new(range.start.row, range.start.column),
8604 lsp::Position::new(range.start.row, range.start.column),
8605 ),
8606 new_text: new_text.to_string(),
8607 })),
8608 ..Default::default()
8609 })
8610 .collect(),
8611 ))
8612 })
8613 .next()
8614 .await;
8615 }
8616
8617 async fn handle_resolve_completion_request(
8618 fake: &mut FakeLanguageServer,
8619 edit: Option<(Range<Point>, &'static str)>,
8620 ) {
8621 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8622 lsp::CompletionItem {
8623 additional_text_edits: edit.clone().map(|(range, new_text)| {
8624 vec![lsp::TextEdit::new(
8625 lsp::Range::new(
8626 lsp::Position::new(range.start.row, range.start.column),
8627 lsp::Position::new(range.end.row, range.end.column),
8628 ),
8629 new_text.to_string(),
8630 )]
8631 }),
8632 ..Default::default()
8633 }
8634 })
8635 .next()
8636 .await;
8637 }
8638 }
8639
8640 #[gpui::test]
8641 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8642 cx.update(populate_settings);
8643 let language = Arc::new(Language::new(
8644 LanguageConfig {
8645 line_comment: Some("// ".to_string()),
8646 ..Default::default()
8647 },
8648 Some(tree_sitter_rust::language()),
8649 ));
8650
8651 let text = "
8652 fn a() {
8653 //b();
8654 // c();
8655 // d();
8656 }
8657 "
8658 .unindent();
8659
8660 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8661 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8662 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8663
8664 view.update(cx, |editor, cx| {
8665 // If multiple selections intersect a line, the line is only
8666 // toggled once.
8667 editor.select_display_ranges(
8668 &[
8669 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8670 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8671 ],
8672 cx,
8673 );
8674 editor.toggle_comments(&ToggleComments, cx);
8675 assert_eq!(
8676 editor.text(cx),
8677 "
8678 fn a() {
8679 b();
8680 c();
8681 d();
8682 }
8683 "
8684 .unindent()
8685 );
8686
8687 // The comment prefix is inserted at the same column for every line
8688 // in a selection.
8689 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8690 editor.toggle_comments(&ToggleComments, cx);
8691 assert_eq!(
8692 editor.text(cx),
8693 "
8694 fn a() {
8695 // b();
8696 // c();
8697 // d();
8698 }
8699 "
8700 .unindent()
8701 );
8702
8703 // If a selection ends at the beginning of a line, that line is not toggled.
8704 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8705 editor.toggle_comments(&ToggleComments, cx);
8706 assert_eq!(
8707 editor.text(cx),
8708 "
8709 fn a() {
8710 // b();
8711 c();
8712 // d();
8713 }
8714 "
8715 .unindent()
8716 );
8717 });
8718 }
8719
8720 #[gpui::test]
8721 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8722 populate_settings(cx);
8723 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8724 let multibuffer = cx.add_model(|cx| {
8725 let mut multibuffer = MultiBuffer::new(0);
8726 multibuffer.push_excerpts(
8727 buffer.clone(),
8728 [
8729 Point::new(0, 0)..Point::new(0, 4),
8730 Point::new(1, 0)..Point::new(1, 4),
8731 ],
8732 cx,
8733 );
8734 multibuffer
8735 });
8736
8737 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8738
8739 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8740 view.update(cx, |view, cx| {
8741 assert_eq!(view.text(cx), "aaaa\nbbbb");
8742 view.select_ranges(
8743 [
8744 Point::new(0, 0)..Point::new(0, 0),
8745 Point::new(1, 0)..Point::new(1, 0),
8746 ],
8747 None,
8748 cx,
8749 );
8750
8751 view.handle_input(&Input("X".to_string()), cx);
8752 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8753 assert_eq!(
8754 view.selected_ranges(cx),
8755 [
8756 Point::new(0, 1)..Point::new(0, 1),
8757 Point::new(1, 1)..Point::new(1, 1),
8758 ]
8759 )
8760 });
8761 }
8762
8763 #[gpui::test]
8764 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8765 populate_settings(cx);
8766 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8767 let multibuffer = cx.add_model(|cx| {
8768 let mut multibuffer = MultiBuffer::new(0);
8769 multibuffer.push_excerpts(
8770 buffer,
8771 [
8772 Point::new(0, 0)..Point::new(1, 4),
8773 Point::new(1, 0)..Point::new(2, 4),
8774 ],
8775 cx,
8776 );
8777 multibuffer
8778 });
8779
8780 assert_eq!(
8781 multibuffer.read(cx).read(cx).text(),
8782 "aaaa\nbbbb\nbbbb\ncccc"
8783 );
8784
8785 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8786 view.update(cx, |view, cx| {
8787 view.select_ranges(
8788 [
8789 Point::new(1, 1)..Point::new(1, 1),
8790 Point::new(2, 3)..Point::new(2, 3),
8791 ],
8792 None,
8793 cx,
8794 );
8795
8796 view.handle_input(&Input("X".to_string()), cx);
8797 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8798 assert_eq!(
8799 view.selected_ranges(cx),
8800 [
8801 Point::new(1, 2)..Point::new(1, 2),
8802 Point::new(2, 5)..Point::new(2, 5),
8803 ]
8804 );
8805
8806 view.newline(&Newline, cx);
8807 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8808 assert_eq!(
8809 view.selected_ranges(cx),
8810 [
8811 Point::new(2, 0)..Point::new(2, 0),
8812 Point::new(6, 0)..Point::new(6, 0),
8813 ]
8814 );
8815 });
8816 }
8817
8818 #[gpui::test]
8819 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8820 populate_settings(cx);
8821 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8822 let mut excerpt1_id = None;
8823 let multibuffer = cx.add_model(|cx| {
8824 let mut multibuffer = MultiBuffer::new(0);
8825 excerpt1_id = multibuffer
8826 .push_excerpts(
8827 buffer.clone(),
8828 [
8829 Point::new(0, 0)..Point::new(1, 4),
8830 Point::new(1, 0)..Point::new(2, 4),
8831 ],
8832 cx,
8833 )
8834 .into_iter()
8835 .next();
8836 multibuffer
8837 });
8838 assert_eq!(
8839 multibuffer.read(cx).read(cx).text(),
8840 "aaaa\nbbbb\nbbbb\ncccc"
8841 );
8842 let (_, editor) = cx.add_window(Default::default(), |cx| {
8843 let mut editor = build_editor(multibuffer.clone(), cx);
8844 let snapshot = editor.snapshot(cx);
8845 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
8846 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
8847 assert_eq!(
8848 editor.selected_ranges(cx),
8849 [
8850 Point::new(1, 3)..Point::new(1, 3),
8851 Point::new(2, 1)..Point::new(2, 1),
8852 ]
8853 );
8854 editor
8855 });
8856
8857 // Refreshing selections is a no-op when excerpts haven't changed.
8858 editor.update(cx, |editor, cx| {
8859 editor.refresh_selections(cx);
8860 assert_eq!(
8861 editor.selected_ranges(cx),
8862 [
8863 Point::new(1, 3)..Point::new(1, 3),
8864 Point::new(2, 1)..Point::new(2, 1),
8865 ]
8866 );
8867 });
8868
8869 multibuffer.update(cx, |multibuffer, cx| {
8870 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8871 });
8872 editor.update(cx, |editor, cx| {
8873 // Removing an excerpt causes the first selection to become degenerate.
8874 assert_eq!(
8875 editor.selected_ranges(cx),
8876 [
8877 Point::new(0, 0)..Point::new(0, 0),
8878 Point::new(0, 1)..Point::new(0, 1)
8879 ]
8880 );
8881
8882 // Refreshing selections will relocate the first selection to the original buffer
8883 // location.
8884 editor.refresh_selections(cx);
8885 assert_eq!(
8886 editor.selected_ranges(cx),
8887 [
8888 Point::new(0, 1)..Point::new(0, 1),
8889 Point::new(0, 3)..Point::new(0, 3)
8890 ]
8891 );
8892 assert!(editor.pending_selection.is_some());
8893 });
8894 }
8895
8896 #[gpui::test]
8897 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
8898 populate_settings(cx);
8899 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8900 let mut excerpt1_id = None;
8901 let multibuffer = cx.add_model(|cx| {
8902 let mut multibuffer = MultiBuffer::new(0);
8903 excerpt1_id = multibuffer
8904 .push_excerpts(
8905 buffer.clone(),
8906 [
8907 Point::new(0, 0)..Point::new(1, 4),
8908 Point::new(1, 0)..Point::new(2, 4),
8909 ],
8910 cx,
8911 )
8912 .into_iter()
8913 .next();
8914 multibuffer
8915 });
8916 assert_eq!(
8917 multibuffer.read(cx).read(cx).text(),
8918 "aaaa\nbbbb\nbbbb\ncccc"
8919 );
8920 let (_, editor) = cx.add_window(Default::default(), |cx| {
8921 let mut editor = build_editor(multibuffer.clone(), cx);
8922 let snapshot = editor.snapshot(cx);
8923 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
8924 assert_eq!(
8925 editor.selected_ranges(cx),
8926 [Point::new(1, 3)..Point::new(1, 3)]
8927 );
8928 editor
8929 });
8930
8931 multibuffer.update(cx, |multibuffer, cx| {
8932 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8933 });
8934 editor.update(cx, |editor, cx| {
8935 assert_eq!(
8936 editor.selected_ranges(cx),
8937 [Point::new(0, 0)..Point::new(0, 0)]
8938 );
8939
8940 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
8941 editor.refresh_selections(cx);
8942 assert_eq!(
8943 editor.selected_ranges(cx),
8944 [Point::new(0, 3)..Point::new(0, 3)]
8945 );
8946 assert!(editor.pending_selection.is_some());
8947 });
8948 }
8949
8950 #[gpui::test]
8951 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8952 cx.update(populate_settings);
8953 let language = Arc::new(Language::new(
8954 LanguageConfig {
8955 brackets: vec![
8956 BracketPair {
8957 start: "{".to_string(),
8958 end: "}".to_string(),
8959 close: true,
8960 newline: true,
8961 },
8962 BracketPair {
8963 start: "/* ".to_string(),
8964 end: " */".to_string(),
8965 close: true,
8966 newline: true,
8967 },
8968 ],
8969 ..Default::default()
8970 },
8971 Some(tree_sitter_rust::language()),
8972 ));
8973
8974 let text = concat!(
8975 "{ }\n", // Suppress rustfmt
8976 " x\n", //
8977 " /* */\n", //
8978 "x\n", //
8979 "{{} }\n", //
8980 );
8981
8982 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8983 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8984 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8985 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8986 .await;
8987
8988 view.update(cx, |view, cx| {
8989 view.select_display_ranges(
8990 &[
8991 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8992 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8993 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8994 ],
8995 cx,
8996 );
8997 view.newline(&Newline, cx);
8998
8999 assert_eq!(
9000 view.buffer().read(cx).read(cx).text(),
9001 concat!(
9002 "{ \n", // Suppress rustfmt
9003 "\n", //
9004 "}\n", //
9005 " x\n", //
9006 " /* \n", //
9007 " \n", //
9008 " */\n", //
9009 "x\n", //
9010 "{{} \n", //
9011 "}\n", //
9012 )
9013 );
9014 });
9015 }
9016
9017 #[gpui::test]
9018 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9019 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9020 populate_settings(cx);
9021 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9022
9023 editor.update(cx, |editor, cx| {
9024 struct Type1;
9025 struct Type2;
9026
9027 let buffer = buffer.read(cx).snapshot(cx);
9028
9029 let anchor_range = |range: Range<Point>| {
9030 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9031 };
9032
9033 editor.highlight_background::<Type1>(
9034 vec![
9035 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9036 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9037 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9038 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9039 ],
9040 Color::red(),
9041 cx,
9042 );
9043 editor.highlight_background::<Type2>(
9044 vec![
9045 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9046 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9047 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9048 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9049 ],
9050 Color::green(),
9051 cx,
9052 );
9053
9054 let snapshot = editor.snapshot(cx);
9055 let mut highlighted_ranges = editor.background_highlights_in_range(
9056 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9057 &snapshot,
9058 );
9059 // Enforce a consistent ordering based on color without relying on the ordering of the
9060 // highlight's `TypeId` which is non-deterministic.
9061 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9062 assert_eq!(
9063 highlighted_ranges,
9064 &[
9065 (
9066 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9067 Color::green(),
9068 ),
9069 (
9070 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9071 Color::green(),
9072 ),
9073 (
9074 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9075 Color::red(),
9076 ),
9077 (
9078 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9079 Color::red(),
9080 ),
9081 ]
9082 );
9083 assert_eq!(
9084 editor.background_highlights_in_range(
9085 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9086 &snapshot,
9087 ),
9088 &[(
9089 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9090 Color::red(),
9091 )]
9092 );
9093 });
9094 }
9095
9096 #[gpui::test]
9097 fn test_following(cx: &mut gpui::MutableAppContext) {
9098 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9099 populate_settings(cx);
9100
9101 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9102 let (_, follower) = cx.add_window(
9103 WindowOptions {
9104 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9105 ..Default::default()
9106 },
9107 |cx| build_editor(buffer.clone(), cx),
9108 );
9109
9110 let pending_update = Rc::new(RefCell::new(None));
9111 follower.update(cx, {
9112 let update = pending_update.clone();
9113 |_, cx| {
9114 cx.subscribe(&leader, move |_, leader, event, cx| {
9115 leader
9116 .read(cx)
9117 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9118 })
9119 .detach();
9120 }
9121 });
9122
9123 // Update the selections only
9124 leader.update(cx, |leader, cx| {
9125 leader.select_ranges([1..1], None, cx);
9126 });
9127 follower.update(cx, |follower, cx| {
9128 follower
9129 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9130 .unwrap();
9131 });
9132 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9133
9134 // Update the scroll position only
9135 leader.update(cx, |leader, cx| {
9136 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9137 });
9138 follower.update(cx, |follower, cx| {
9139 follower
9140 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9141 .unwrap();
9142 });
9143 assert_eq!(
9144 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9145 vec2f(1.5, 3.5)
9146 );
9147
9148 // Update the selections and scroll position
9149 leader.update(cx, |leader, cx| {
9150 leader.select_ranges([0..0], None, cx);
9151 leader.request_autoscroll(Autoscroll::Newest, cx);
9152 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9153 });
9154 follower.update(cx, |follower, cx| {
9155 let initial_scroll_position = follower.scroll_position(cx);
9156 follower
9157 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9158 .unwrap();
9159 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9160 assert!(follower.autoscroll_request.is_some());
9161 });
9162 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9163
9164 // Creating a pending selection that precedes another selection
9165 leader.update(cx, |leader, cx| {
9166 leader.select_ranges([1..1], None, cx);
9167 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9168 });
9169 follower.update(cx, |follower, cx| {
9170 follower
9171 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9172 .unwrap();
9173 });
9174 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9175
9176 // Extend the pending selection so that it surrounds another selection
9177 leader.update(cx, |leader, cx| {
9178 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9179 });
9180 follower.update(cx, |follower, cx| {
9181 follower
9182 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9183 .unwrap();
9184 });
9185 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9186 }
9187
9188 #[test]
9189 fn test_combine_syntax_and_fuzzy_match_highlights() {
9190 let string = "abcdefghijklmnop";
9191 let syntax_ranges = [
9192 (
9193 0..3,
9194 HighlightStyle {
9195 color: Some(Color::red()),
9196 ..Default::default()
9197 },
9198 ),
9199 (
9200 4..8,
9201 HighlightStyle {
9202 color: Some(Color::green()),
9203 ..Default::default()
9204 },
9205 ),
9206 ];
9207 let match_indices = [4, 6, 7, 8];
9208 assert_eq!(
9209 combine_syntax_and_fuzzy_match_highlights(
9210 &string,
9211 Default::default(),
9212 syntax_ranges.into_iter(),
9213 &match_indices,
9214 ),
9215 &[
9216 (
9217 0..3,
9218 HighlightStyle {
9219 color: Some(Color::red()),
9220 ..Default::default()
9221 },
9222 ),
9223 (
9224 4..5,
9225 HighlightStyle {
9226 color: Some(Color::green()),
9227 weight: Some(fonts::Weight::BOLD),
9228 ..Default::default()
9229 },
9230 ),
9231 (
9232 5..6,
9233 HighlightStyle {
9234 color: Some(Color::green()),
9235 ..Default::default()
9236 },
9237 ),
9238 (
9239 6..8,
9240 HighlightStyle {
9241 color: Some(Color::green()),
9242 weight: Some(fonts::Weight::BOLD),
9243 ..Default::default()
9244 },
9245 ),
9246 (
9247 8..9,
9248 HighlightStyle {
9249 weight: Some(fonts::Weight::BOLD),
9250 ..Default::default()
9251 },
9252 ),
9253 ]
9254 );
9255 }
9256
9257 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9258 let point = DisplayPoint::new(row as u32, column as u32);
9259 point..point
9260 }
9261
9262 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9263 Editor::new(EditorMode::Full, buffer, None, None, cx)
9264 }
9265
9266 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9267 let settings = Settings::test(cx);
9268 cx.set_global(settings);
9269 }
9270
9271 fn assert_selection_ranges(
9272 marked_text: &str,
9273 selection_marker_pairs: Vec<(char, char)>,
9274 view: &mut Editor,
9275 cx: &mut ViewContext<Editor>,
9276 ) {
9277 let snapshot = view.snapshot(cx).display_snapshot;
9278 let mut marker_chars = Vec::new();
9279 for (start, end) in selection_marker_pairs.iter() {
9280 marker_chars.push(*start);
9281 marker_chars.push(*end);
9282 }
9283 let (_, markers) = marked_text_by(marked_text, marker_chars);
9284 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9285 .iter()
9286 .map(|(start, end)| {
9287 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9288 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9289 start..end
9290 })
9291 .collect();
9292 assert_eq!(
9293 view.selected_display_ranges(cx),
9294 &asserted_ranges[..],
9295 "Assert selections are {}",
9296 marked_text
9297 );
9298 }
9299}
9300
9301trait RangeExt<T> {
9302 fn sorted(&self) -> Range<T>;
9303 fn to_inclusive(&self) -> RangeInclusive<T>;
9304}
9305
9306impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9307 fn sorted(&self) -> Self {
9308 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9309 }
9310
9311 fn to_inclusive(&self) -> RangeInclusive<T> {
9312 self.start.clone()..=self.end.clone()
9313 }
9314}