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, 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, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
28 MutableAppContext, RenderContext, Task, View, ViewContext, WeakModelHandle, WeakViewHandle,
29};
30use items::BufferItemHandle;
31use itertools::Itertools as _;
32use language::{
33 AnchorRangeExt as _, BracketPair, Buffer, Completion, CompletionLabel, Diagnostic,
34 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
35};
36use multi_buffer::MultiBufferChunks;
37pub use multi_buffer::{
38 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, ExcerptProperties, MultiBuffer,
39 MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use postage::watch;
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, EditorStyle};
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{ItemNavHistory, PathOpener, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordBoundary);
92action!(MoveToNextWordBoundary);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine);
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!(ShowNextDiagnostic);
118action!(GoToDefinition);
119action!(PageUp);
120action!(PageDown);
121action!(Fold);
122action!(Unfold);
123action!(FoldSelectedRanges);
124action!(Scroll, Vector2F);
125action!(Select, SelectPhase);
126action!(ShowCompletions);
127action!(ConfirmCompletion, Option<usize>);
128
129pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
130 path_openers.push(Box::new(items::BufferOpener));
131 cx.add_bindings(vec![
132 Binding::new("escape", Cancel, Some("Editor")),
133 Binding::new("backspace", Backspace, Some("Editor")),
134 Binding::new("ctrl-h", Backspace, Some("Editor")),
135 Binding::new("delete", Delete, Some("Editor")),
136 Binding::new("ctrl-d", Delete, Some("Editor")),
137 Binding::new("enter", Newline, Some("Editor && mode == full")),
138 Binding::new(
139 "alt-enter",
140 Input("\n".into()),
141 Some("Editor && mode == auto_height"),
142 ),
143 Binding::new(
144 "enter",
145 ConfirmCompletion(None),
146 Some("Editor && completing"),
147 ),
148 Binding::new("tab", Tab, Some("Editor")),
149 Binding::new("tab", ConfirmCompletion(None), Some("Editor && completing")),
150 Binding::new("shift-tab", Outdent, Some("Editor")),
151 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
152 Binding::new(
153 "alt-backspace",
154 DeleteToPreviousWordBoundary,
155 Some("Editor"),
156 ),
157 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
158 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
159 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
160 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
161 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
162 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
163 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
164 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
165 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
166 Binding::new("cmd-x", Cut, Some("Editor")),
167 Binding::new("cmd-c", Copy, Some("Editor")),
168 Binding::new("cmd-v", Paste, Some("Editor")),
169 Binding::new("cmd-z", Undo, Some("Editor")),
170 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
171 Binding::new("up", MoveUp, Some("Editor")),
172 Binding::new("down", MoveDown, Some("Editor")),
173 Binding::new("left", MoveLeft, Some("Editor")),
174 Binding::new("right", MoveRight, Some("Editor")),
175 Binding::new("ctrl-p", MoveUp, Some("Editor")),
176 Binding::new("ctrl-n", MoveDown, Some("Editor")),
177 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
178 Binding::new("ctrl-f", MoveRight, Some("Editor")),
179 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
180 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
181 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
182 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
183 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
184 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
187 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
188 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
189 Binding::new("shift-up", SelectUp, Some("Editor")),
190 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
191 Binding::new("shift-down", SelectDown, Some("Editor")),
192 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
193 Binding::new("shift-left", SelectLeft, Some("Editor")),
194 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
195 Binding::new("shift-right", SelectRight, Some("Editor")),
196 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
197 Binding::new(
198 "alt-shift-left",
199 SelectToPreviousWordBoundary,
200 Some("Editor"),
201 ),
202 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
203 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
204 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
205 Binding::new(
206 "cmd-shift-left",
207 SelectToBeginningOfLine(true),
208 Some("Editor"),
209 ),
210 Binding::new(
211 "ctrl-shift-A",
212 SelectToBeginningOfLine(true),
213 Some("Editor"),
214 ),
215 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
216 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
217 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
218 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
219 Binding::new("cmd-a", SelectAll, Some("Editor")),
220 Binding::new("cmd-l", SelectLine, Some("Editor")),
221 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
222 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
223 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
224 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
225 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
226 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
227 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
228 Binding::new("cmd-/", ToggleComments, Some("Editor")),
229 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
230 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
231 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
232 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
233 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
234 Binding::new("f12", GoToDefinition, Some("Editor")),
235 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
236 Binding::new("pageup", PageUp, Some("Editor")),
237 Binding::new("pagedown", PageDown, Some("Editor")),
238 Binding::new("alt-cmd-[", Fold, Some("Editor")),
239 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
240 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
241 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
242 ]);
243
244 cx.add_action(Editor::open_new);
245 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
246 cx.add_action(Editor::select);
247 cx.add_action(Editor::cancel);
248 cx.add_action(Editor::handle_input);
249 cx.add_action(Editor::newline);
250 cx.add_action(Editor::backspace);
251 cx.add_action(Editor::delete);
252 cx.add_action(Editor::tab);
253 cx.add_action(Editor::outdent);
254 cx.add_action(Editor::delete_line);
255 cx.add_action(Editor::delete_to_previous_word_boundary);
256 cx.add_action(Editor::delete_to_next_word_boundary);
257 cx.add_action(Editor::delete_to_beginning_of_line);
258 cx.add_action(Editor::delete_to_end_of_line);
259 cx.add_action(Editor::cut_to_end_of_line);
260 cx.add_action(Editor::duplicate_line);
261 cx.add_action(Editor::move_line_up);
262 cx.add_action(Editor::move_line_down);
263 cx.add_action(Editor::cut);
264 cx.add_action(Editor::copy);
265 cx.add_action(Editor::paste);
266 cx.add_action(Editor::undo);
267 cx.add_action(Editor::redo);
268 cx.add_action(Editor::move_up);
269 cx.add_action(Editor::move_down);
270 cx.add_action(Editor::move_left);
271 cx.add_action(Editor::move_right);
272 cx.add_action(Editor::move_to_previous_word_boundary);
273 cx.add_action(Editor::move_to_next_word_boundary);
274 cx.add_action(Editor::move_to_beginning_of_line);
275 cx.add_action(Editor::move_to_end_of_line);
276 cx.add_action(Editor::move_to_beginning);
277 cx.add_action(Editor::move_to_end);
278 cx.add_action(Editor::select_up);
279 cx.add_action(Editor::select_down);
280 cx.add_action(Editor::select_left);
281 cx.add_action(Editor::select_right);
282 cx.add_action(Editor::select_to_previous_word_boundary);
283 cx.add_action(Editor::select_to_next_word_boundary);
284 cx.add_action(Editor::select_to_beginning_of_line);
285 cx.add_action(Editor::select_to_end_of_line);
286 cx.add_action(Editor::select_to_beginning);
287 cx.add_action(Editor::select_to_end);
288 cx.add_action(Editor::select_all);
289 cx.add_action(Editor::select_line);
290 cx.add_action(Editor::split_selection_into_lines);
291 cx.add_action(Editor::add_selection_above);
292 cx.add_action(Editor::add_selection_below);
293 cx.add_action(Editor::select_next);
294 cx.add_action(Editor::toggle_comments);
295 cx.add_action(Editor::select_larger_syntax_node);
296 cx.add_action(Editor::select_smaller_syntax_node);
297 cx.add_action(Editor::move_to_enclosing_bracket);
298 cx.add_action(Editor::show_next_diagnostic);
299 cx.add_action(Editor::go_to_definition);
300 cx.add_action(Editor::page_up);
301 cx.add_action(Editor::page_down);
302 cx.add_action(Editor::fold);
303 cx.add_action(Editor::unfold);
304 cx.add_action(Editor::fold_selected_ranges);
305 cx.add_action(Editor::show_completions);
306 cx.add_action(
307 |editor: &mut Editor, &ConfirmCompletion(ix): &ConfirmCompletion, cx| {
308 if let Some(task) = editor.confirm_completion(ix, cx) {
309 task.detach_and_log_err(cx);
310 }
311 },
312 );
313}
314
315trait SelectionExt {
316 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
317 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
318 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
319 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
320 -> Range<u32>;
321}
322
323trait InvalidationRegion {
324 fn ranges(&self) -> &[Range<Anchor>];
325}
326
327#[derive(Clone, Debug)]
328pub enum SelectPhase {
329 Begin {
330 position: DisplayPoint,
331 add: bool,
332 click_count: usize,
333 },
334 BeginColumnar {
335 position: DisplayPoint,
336 overshoot: u32,
337 },
338 Extend {
339 position: DisplayPoint,
340 click_count: usize,
341 },
342 Update {
343 position: DisplayPoint,
344 overshoot: u32,
345 scroll_position: Vector2F,
346 },
347 End,
348}
349
350#[derive(Clone, Debug)]
351enum SelectMode {
352 Character,
353 Word(Range<Anchor>),
354 Line(Range<Anchor>),
355 All,
356}
357
358#[derive(PartialEq, Eq)]
359pub enum Autoscroll {
360 Fit,
361 Center,
362 Newest,
363}
364
365#[derive(Copy, Clone, PartialEq, Eq)]
366pub enum EditorMode {
367 SingleLine,
368 AutoHeight { max_lines: usize },
369 Full,
370}
371
372#[derive(Clone)]
373pub struct EditorSettings {
374 pub tab_size: usize,
375 pub soft_wrap: SoftWrap,
376 pub style: EditorStyle,
377}
378
379#[derive(Clone)]
380pub enum SoftWrap {
381 None,
382 EditorWidth,
383 Column(u32),
384}
385
386type CompletionId = usize;
387
388pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
389
390pub struct Editor {
391 handle: WeakViewHandle<Self>,
392 buffer: ModelHandle<MultiBuffer>,
393 display_map: ModelHandle<DisplayMap>,
394 next_selection_id: usize,
395 selections: Arc<[Selection<Anchor>]>,
396 pending_selection: Option<PendingSelection>,
397 columnar_selection_tail: Option<Anchor>,
398 add_selections_state: Option<AddSelectionsState>,
399 select_next_state: Option<SelectNextState>,
400 selection_history:
401 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
402 autoclose_stack: InvalidationStack<BracketPairState>,
403 snippet_stack: InvalidationStack<SnippetState>,
404 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
405 active_diagnostics: Option<ActiveDiagnosticGroup>,
406 scroll_position: Vector2F,
407 scroll_top_anchor: Option<Anchor>,
408 autoscroll_request: Option<Autoscroll>,
409 build_settings: BuildSettings,
410 focused: bool,
411 show_local_cursors: bool,
412 blink_epoch: usize,
413 blinking_paused: bool,
414 mode: EditorMode,
415 vertical_scroll_margin: f32,
416 placeholder_text: Option<Arc<str>>,
417 highlighted_rows: Option<Range<u32>>,
418 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
419 nav_history: Option<ItemNavHistory>,
420 completion_state: Option<CompletionState>,
421 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
422 next_completion_id: CompletionId,
423}
424
425pub struct EditorSnapshot {
426 pub mode: EditorMode,
427 pub display_snapshot: DisplaySnapshot,
428 pub placeholder_text: Option<Arc<str>>,
429 is_focused: bool,
430 scroll_position: Vector2F,
431 scroll_top_anchor: Option<Anchor>,
432}
433
434struct PendingSelection {
435 selection: Selection<Anchor>,
436 mode: SelectMode,
437}
438
439struct AddSelectionsState {
440 above: bool,
441 stack: Vec<usize>,
442}
443
444struct SelectNextState {
445 query: AhoCorasick,
446 wordwise: bool,
447 done: bool,
448}
449
450struct BracketPairState {
451 ranges: Vec<Range<Anchor>>,
452 pair: BracketPair,
453}
454
455struct SnippetState {
456 ranges: Vec<Vec<Range<Anchor>>>,
457 active_index: usize,
458}
459
460struct InvalidationStack<T>(Vec<T>);
461
462struct CompletionState {
463 id: CompletionId,
464 initial_position: Anchor,
465 completions: Arc<[Completion<Anchor>]>,
466 match_candidates: Vec<StringMatchCandidate>,
467 matches: Arc<[StringMatch]>,
468 selected_item: usize,
469 list: UniformListState,
470}
471
472impl CompletionState {
473 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
474 let mut matches = if let Some(query) = query {
475 fuzzy::match_strings(
476 &self.match_candidates,
477 query,
478 false,
479 100,
480 &Default::default(),
481 executor,
482 )
483 .await
484 } else {
485 self.match_candidates
486 .iter()
487 .enumerate()
488 .map(|(candidate_id, candidate)| StringMatch {
489 candidate_id,
490 score: Default::default(),
491 positions: Default::default(),
492 string: candidate.string.clone(),
493 })
494 .collect()
495 };
496 matches.sort_unstable_by_key(|mat| {
497 (
498 Reverse(OrderedFloat(mat.score)),
499 self.completions[mat.candidate_id].sort_key(),
500 )
501 });
502
503 for mat in &mut matches {
504 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
505 for position in &mut mat.positions {
506 *position += filter_start;
507 }
508 }
509
510 self.matches = matches.into();
511 }
512}
513
514#[derive(Debug)]
515struct ActiveDiagnosticGroup {
516 primary_range: Range<Anchor>,
517 primary_message: String,
518 blocks: HashMap<BlockId, Diagnostic>,
519 is_valid: bool,
520}
521
522#[derive(Serialize, Deserialize)]
523struct ClipboardSelection {
524 len: usize,
525 is_entire_line: bool,
526}
527
528pub struct NavigationData {
529 anchor: Anchor,
530 offset: usize,
531}
532
533impl Editor {
534 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
535 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
536 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
537 let mut view = Self::for_buffer(buffer, build_settings, cx);
538 view.mode = EditorMode::SingleLine;
539 view
540 }
541
542 pub fn auto_height(
543 max_lines: usize,
544 build_settings: BuildSettings,
545 cx: &mut ViewContext<Self>,
546 ) -> Self {
547 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
548 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
549 let mut view = Self::for_buffer(buffer, build_settings, cx);
550 view.mode = EditorMode::AutoHeight { max_lines };
551 view
552 }
553
554 pub fn for_buffer(
555 buffer: ModelHandle<MultiBuffer>,
556 build_settings: BuildSettings,
557 cx: &mut ViewContext<Self>,
558 ) -> Self {
559 Self::new(buffer, build_settings, cx)
560 }
561
562 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
563 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
564 clone.scroll_position = self.scroll_position;
565 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
566 clone.nav_history = self
567 .nav_history
568 .as_ref()
569 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
570 clone
571 }
572
573 pub fn new(
574 buffer: ModelHandle<MultiBuffer>,
575 build_settings: BuildSettings,
576 cx: &mut ViewContext<Self>,
577 ) -> Self {
578 let settings = build_settings(cx);
579 let display_map = cx.add_model(|cx| {
580 DisplayMap::new(
581 buffer.clone(),
582 settings.tab_size,
583 settings.style.text.font_id,
584 settings.style.text.font_size,
585 None,
586 cx,
587 )
588 });
589 cx.observe(&buffer, Self::on_buffer_changed).detach();
590 cx.subscribe(&buffer, Self::on_buffer_event).detach();
591 cx.observe(&display_map, Self::on_display_map_changed)
592 .detach();
593
594 let mut this = Self {
595 handle: cx.weak_handle(),
596 buffer,
597 display_map,
598 selections: Arc::from([]),
599 pending_selection: None,
600 columnar_selection_tail: None,
601 next_selection_id: 0,
602 add_selections_state: None,
603 select_next_state: None,
604 selection_history: Default::default(),
605 autoclose_stack: Default::default(),
606 snippet_stack: Default::default(),
607 select_larger_syntax_node_stack: Vec::new(),
608 active_diagnostics: None,
609 build_settings,
610 scroll_position: Vector2F::zero(),
611 scroll_top_anchor: None,
612 autoscroll_request: None,
613 focused: false,
614 show_local_cursors: false,
615 blink_epoch: 0,
616 blinking_paused: false,
617 mode: EditorMode::Full,
618 vertical_scroll_margin: 3.0,
619 placeholder_text: None,
620 highlighted_rows: None,
621 highlighted_ranges: Default::default(),
622 nav_history: None,
623 completion_state: None,
624 completion_tasks: Default::default(),
625 next_completion_id: 0,
626 };
627 let selection = Selection {
628 id: post_inc(&mut this.next_selection_id),
629 start: 0,
630 end: 0,
631 reversed: false,
632 goal: SelectionGoal::None,
633 };
634 this.update_selections(vec![selection], None, cx);
635 this
636 }
637
638 pub fn open_new(
639 workspace: &mut Workspace,
640 _: &workspace::OpenNew,
641 cx: &mut ViewContext<Workspace>,
642 ) {
643 let buffer = cx
644 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
645 workspace.open_item(BufferItemHandle(buffer), cx);
646 }
647
648 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
649 self.buffer.read(cx).replica_id()
650 }
651
652 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
653 &self.buffer
654 }
655
656 pub fn title(&self, cx: &AppContext) -> String {
657 let filename = self
658 .buffer()
659 .read(cx)
660 .file(cx)
661 .map(|file| file.file_name(cx));
662 if let Some(name) = filename {
663 name.to_string_lossy().into()
664 } else {
665 "untitled".into()
666 }
667 }
668
669 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
670 EditorSnapshot {
671 mode: self.mode,
672 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
673 scroll_position: self.scroll_position,
674 scroll_top_anchor: self.scroll_top_anchor.clone(),
675 placeholder_text: self.placeholder_text.clone(),
676 is_focused: self
677 .handle
678 .upgrade(cx)
679 .map_or(false, |handle| handle.is_focused(cx)),
680 }
681 }
682
683 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
684 self.buffer.read(cx).language(cx)
685 }
686
687 pub fn set_placeholder_text(
688 &mut self,
689 placeholder_text: impl Into<Arc<str>>,
690 cx: &mut ViewContext<Self>,
691 ) {
692 self.placeholder_text = Some(placeholder_text.into());
693 cx.notify();
694 }
695
696 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
697 self.vertical_scroll_margin = margin_rows as f32;
698 cx.notify();
699 }
700
701 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
702 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
703
704 if scroll_position.y() == 0. {
705 self.scroll_top_anchor = None;
706 self.scroll_position = scroll_position;
707 } else {
708 let scroll_top_buffer_offset =
709 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
710 let anchor = map
711 .buffer_snapshot
712 .anchor_at(scroll_top_buffer_offset, Bias::Right);
713 self.scroll_position = vec2f(
714 scroll_position.x(),
715 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
716 );
717 self.scroll_top_anchor = Some(anchor);
718 }
719
720 cx.notify();
721 }
722
723 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
724 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
725 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
726 }
727
728 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
729 if max < self.scroll_position.x() {
730 self.scroll_position.set_x(max);
731 true
732 } else {
733 false
734 }
735 }
736
737 pub fn autoscroll_vertically(
738 &mut self,
739 viewport_height: f32,
740 line_height: f32,
741 cx: &mut ViewContext<Self>,
742 ) -> bool {
743 let visible_lines = viewport_height / line_height;
744 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
745 let mut scroll_position =
746 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
747 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
748 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
749 } else {
750 display_map.max_point().row().saturating_sub(1) as f32
751 };
752 if scroll_position.y() > max_scroll_top {
753 scroll_position.set_y(max_scroll_top);
754 self.set_scroll_position(scroll_position, cx);
755 }
756
757 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
758 autoscroll
759 } else {
760 return false;
761 };
762
763 let first_cursor_top;
764 let last_cursor_bottom;
765 if let Some(highlighted_rows) = &self.highlighted_rows {
766 first_cursor_top = highlighted_rows.start as f32;
767 last_cursor_bottom = first_cursor_top + 1.;
768 } else if autoscroll == Autoscroll::Newest {
769 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
770 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
771 last_cursor_bottom = first_cursor_top + 1.;
772 } else {
773 let selections = self.local_selections::<Point>(cx);
774 first_cursor_top = selections
775 .first()
776 .unwrap()
777 .head()
778 .to_display_point(&display_map)
779 .row() as f32;
780 last_cursor_bottom = selections
781 .last()
782 .unwrap()
783 .head()
784 .to_display_point(&display_map)
785 .row() as f32
786 + 1.0;
787 }
788
789 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
790 0.
791 } else {
792 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
793 };
794 if margin < 0.0 {
795 return false;
796 }
797
798 match autoscroll {
799 Autoscroll::Fit | Autoscroll::Newest => {
800 let margin = margin.min(self.vertical_scroll_margin);
801 let target_top = (first_cursor_top - margin).max(0.0);
802 let target_bottom = last_cursor_bottom + margin;
803 let start_row = scroll_position.y();
804 let end_row = start_row + visible_lines;
805
806 if target_top < start_row {
807 scroll_position.set_y(target_top);
808 self.set_scroll_position(scroll_position, cx);
809 } else if target_bottom >= end_row {
810 scroll_position.set_y(target_bottom - visible_lines);
811 self.set_scroll_position(scroll_position, cx);
812 }
813 }
814 Autoscroll::Center => {
815 scroll_position.set_y((first_cursor_top - margin).max(0.0));
816 self.set_scroll_position(scroll_position, cx);
817 }
818 }
819
820 true
821 }
822
823 pub fn autoscroll_horizontally(
824 &mut self,
825 start_row: u32,
826 viewport_width: f32,
827 scroll_width: f32,
828 max_glyph_width: f32,
829 layouts: &[text_layout::Line],
830 cx: &mut ViewContext<Self>,
831 ) -> bool {
832 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
833 let selections = self.local_selections::<Point>(cx);
834
835 let mut target_left;
836 let mut target_right;
837
838 if self.highlighted_rows.is_some() {
839 target_left = 0.0_f32;
840 target_right = 0.0_f32;
841 } else {
842 target_left = std::f32::INFINITY;
843 target_right = 0.0_f32;
844 for selection in selections {
845 let head = selection.head().to_display_point(&display_map);
846 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
847 let start_column = head.column().saturating_sub(3);
848 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
849 target_left = target_left.min(
850 layouts[(head.row() - start_row) as usize]
851 .x_for_index(start_column as usize),
852 );
853 target_right = target_right.max(
854 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
855 + max_glyph_width,
856 );
857 }
858 }
859 }
860
861 target_right = target_right.min(scroll_width);
862
863 if target_right - target_left > viewport_width {
864 return false;
865 }
866
867 let scroll_left = self.scroll_position.x() * max_glyph_width;
868 let scroll_right = scroll_left + viewport_width;
869
870 if target_left < scroll_left {
871 self.scroll_position.set_x(target_left / max_glyph_width);
872 true
873 } else if target_right > scroll_right {
874 self.scroll_position
875 .set_x((target_right - viewport_width) / max_glyph_width);
876 true
877 } else {
878 false
879 }
880 }
881
882 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
883 self.hide_completions(cx);
884
885 match phase {
886 SelectPhase::Begin {
887 position,
888 add,
889 click_count,
890 } => self.begin_selection(*position, *add, *click_count, cx),
891 SelectPhase::BeginColumnar {
892 position,
893 overshoot,
894 } => self.begin_columnar_selection(*position, *overshoot, cx),
895 SelectPhase::Extend {
896 position,
897 click_count,
898 } => self.extend_selection(*position, *click_count, cx),
899 SelectPhase::Update {
900 position,
901 overshoot,
902 scroll_position,
903 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
904 SelectPhase::End => self.end_selection(cx),
905 }
906 }
907
908 fn extend_selection(
909 &mut self,
910 position: DisplayPoint,
911 click_count: usize,
912 cx: &mut ViewContext<Self>,
913 ) {
914 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
915 let tail = self
916 .newest_selection::<usize>(&display_map.buffer_snapshot)
917 .tail();
918 self.begin_selection(position, false, click_count, cx);
919
920 let position = position.to_offset(&display_map, Bias::Left);
921 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
922 let pending = self.pending_selection.as_mut().unwrap();
923
924 if position >= tail {
925 pending.selection.start = tail_anchor.clone();
926 } else {
927 pending.selection.end = tail_anchor.clone();
928 pending.selection.reversed = true;
929 }
930
931 match &mut pending.mode {
932 SelectMode::Word(range) | SelectMode::Line(range) => {
933 *range = tail_anchor.clone()..tail_anchor
934 }
935 _ => {}
936 }
937 }
938
939 fn begin_selection(
940 &mut self,
941 position: DisplayPoint,
942 add: bool,
943 click_count: usize,
944 cx: &mut ViewContext<Self>,
945 ) {
946 if !self.focused {
947 cx.focus_self();
948 cx.emit(Event::Activate);
949 }
950
951 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
952 let buffer = &display_map.buffer_snapshot;
953 let newest_selection = self.newest_anchor_selection().unwrap().clone();
954
955 let start;
956 let end;
957 let mode;
958 match click_count {
959 1 => {
960 start = buffer.anchor_before(position.to_point(&display_map));
961 end = start.clone();
962 mode = SelectMode::Character;
963 }
964 2 => {
965 let range = movement::surrounding_word(&display_map, position);
966 start = buffer.anchor_before(range.start.to_point(&display_map));
967 end = buffer.anchor_before(range.end.to_point(&display_map));
968 mode = SelectMode::Word(start.clone()..end.clone());
969 }
970 3 => {
971 let position = display_map.clip_point(position, Bias::Left);
972 let line_start = movement::line_beginning(&display_map, position, false);
973 let mut next_line_start = line_start.clone();
974 *next_line_start.row_mut() += 1;
975 *next_line_start.column_mut() = 0;
976 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
977
978 start = buffer.anchor_before(line_start.to_point(&display_map));
979 end = buffer.anchor_before(next_line_start.to_point(&display_map));
980 mode = SelectMode::Line(start.clone()..end.clone());
981 }
982 _ => {
983 start = buffer.anchor_before(0);
984 end = buffer.anchor_before(buffer.len());
985 mode = SelectMode::All;
986 }
987 }
988
989 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
990
991 let selection = Selection {
992 id: post_inc(&mut self.next_selection_id),
993 start,
994 end,
995 reversed: false,
996 goal: SelectionGoal::None,
997 };
998
999 if !add {
1000 self.update_selections::<usize>(Vec::new(), None, cx);
1001 } else if click_count > 1 {
1002 // Remove the newest selection since it was only added as part of this multi-click.
1003 let mut selections = self.local_selections(cx);
1004 selections.retain(|selection| selection.id != newest_selection.id);
1005 self.update_selections::<usize>(selections, None, cx)
1006 }
1007
1008 self.pending_selection = Some(PendingSelection { selection, mode });
1009
1010 cx.notify();
1011 }
1012
1013 fn begin_columnar_selection(
1014 &mut self,
1015 position: DisplayPoint,
1016 overshoot: u32,
1017 cx: &mut ViewContext<Self>,
1018 ) {
1019 if !self.focused {
1020 cx.focus_self();
1021 cx.emit(Event::Activate);
1022 }
1023
1024 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1025 let tail = self
1026 .newest_selection::<Point>(&display_map.buffer_snapshot)
1027 .tail();
1028 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1029
1030 self.select_columns(
1031 tail.to_display_point(&display_map),
1032 position,
1033 overshoot,
1034 &display_map,
1035 cx,
1036 );
1037 }
1038
1039 fn update_selection(
1040 &mut self,
1041 position: DisplayPoint,
1042 overshoot: u32,
1043 scroll_position: Vector2F,
1044 cx: &mut ViewContext<Self>,
1045 ) {
1046 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1047
1048 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1049 let tail = tail.to_display_point(&display_map);
1050 self.select_columns(tail, position, overshoot, &display_map, cx);
1051 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1052 let buffer = self.buffer.read(cx).snapshot(cx);
1053 let head;
1054 let tail;
1055 match mode {
1056 SelectMode::Character => {
1057 head = position.to_point(&display_map);
1058 tail = selection.tail().to_point(&buffer);
1059 }
1060 SelectMode::Word(original_range) => {
1061 let original_display_range = original_range.start.to_display_point(&display_map)
1062 ..original_range.end.to_display_point(&display_map);
1063 let original_buffer_range = original_display_range.start.to_point(&display_map)
1064 ..original_display_range.end.to_point(&display_map);
1065 if movement::is_inside_word(&display_map, position)
1066 || original_display_range.contains(&position)
1067 {
1068 let word_range = movement::surrounding_word(&display_map, position);
1069 if word_range.start < original_display_range.start {
1070 head = word_range.start.to_point(&display_map);
1071 } else {
1072 head = word_range.end.to_point(&display_map);
1073 }
1074 } else {
1075 head = position.to_point(&display_map);
1076 }
1077
1078 if head <= original_buffer_range.start {
1079 tail = original_buffer_range.end;
1080 } else {
1081 tail = original_buffer_range.start;
1082 }
1083 }
1084 SelectMode::Line(original_range) => {
1085 let original_display_range = original_range.start.to_display_point(&display_map)
1086 ..original_range.end.to_display_point(&display_map);
1087 let original_buffer_range = original_display_range.start.to_point(&display_map)
1088 ..original_display_range.end.to_point(&display_map);
1089 let line_start = movement::line_beginning(&display_map, position, false);
1090 let mut next_line_start = line_start.clone();
1091 *next_line_start.row_mut() += 1;
1092 *next_line_start.column_mut() = 0;
1093 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1094
1095 if line_start < original_display_range.start {
1096 head = line_start.to_point(&display_map);
1097 } else {
1098 head = next_line_start.to_point(&display_map);
1099 }
1100
1101 if head <= original_buffer_range.start {
1102 tail = original_buffer_range.end;
1103 } else {
1104 tail = original_buffer_range.start;
1105 }
1106 }
1107 SelectMode::All => {
1108 return;
1109 }
1110 };
1111
1112 if head < tail {
1113 selection.start = buffer.anchor_before(head);
1114 selection.end = buffer.anchor_before(tail);
1115 selection.reversed = true;
1116 } else {
1117 selection.start = buffer.anchor_before(tail);
1118 selection.end = buffer.anchor_before(head);
1119 selection.reversed = false;
1120 }
1121 } else {
1122 log::error!("update_selection dispatched with no pending selection");
1123 return;
1124 }
1125
1126 self.set_scroll_position(scroll_position, cx);
1127 cx.notify();
1128 }
1129
1130 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1131 self.columnar_selection_tail.take();
1132 if self.pending_selection.is_some() {
1133 let selections = self.local_selections::<usize>(cx);
1134 self.update_selections(selections, None, cx);
1135 }
1136 }
1137
1138 fn select_columns(
1139 &mut self,
1140 tail: DisplayPoint,
1141 head: DisplayPoint,
1142 overshoot: u32,
1143 display_map: &DisplaySnapshot,
1144 cx: &mut ViewContext<Self>,
1145 ) {
1146 let start_row = cmp::min(tail.row(), head.row());
1147 let end_row = cmp::max(tail.row(), head.row());
1148 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1149 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1150 let reversed = start_column < tail.column();
1151
1152 let selections = (start_row..=end_row)
1153 .filter_map(|row| {
1154 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1155 let start = display_map
1156 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1157 .to_point(&display_map);
1158 let end = display_map
1159 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1160 .to_point(&display_map);
1161 Some(Selection {
1162 id: post_inc(&mut self.next_selection_id),
1163 start,
1164 end,
1165 reversed,
1166 goal: SelectionGoal::None,
1167 })
1168 } else {
1169 None
1170 }
1171 })
1172 .collect::<Vec<_>>();
1173
1174 self.update_selections(selections, None, cx);
1175 cx.notify();
1176 }
1177
1178 pub fn is_selecting(&self) -> bool {
1179 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1180 }
1181
1182 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1183 if self.hide_completions(cx).is_some() {
1184 return;
1185 }
1186
1187 if self.snippet_stack.pop().is_some() {
1188 return;
1189 }
1190
1191 if self.mode != EditorMode::Full {
1192 cx.propagate_action();
1193 return;
1194 }
1195
1196 if self.active_diagnostics.is_some() {
1197 self.dismiss_diagnostics(cx);
1198 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1199 let buffer = self.buffer.read(cx).snapshot(cx);
1200 let selection = Selection {
1201 id: selection.id,
1202 start: selection.start.to_point(&buffer),
1203 end: selection.end.to_point(&buffer),
1204 reversed: selection.reversed,
1205 goal: selection.goal,
1206 };
1207 if self.local_selections::<Point>(cx).is_empty() {
1208 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1209 }
1210 } else {
1211 let buffer = self.buffer.read(cx).snapshot(cx);
1212 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1213 if self.selection_count() == 1 {
1214 if oldest_selection.is_empty() {
1215 cx.propagate_action();
1216 return;
1217 }
1218
1219 oldest_selection.start = oldest_selection.head().clone();
1220 oldest_selection.end = oldest_selection.head().clone();
1221 }
1222 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1223 }
1224 }
1225
1226 #[cfg(any(test, feature = "test-support"))]
1227 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1228 &self,
1229 cx: &mut MutableAppContext,
1230 ) -> Vec<Range<D>> {
1231 self.local_selections::<D>(cx)
1232 .iter()
1233 .map(|s| {
1234 if s.reversed {
1235 s.end.clone()..s.start.clone()
1236 } else {
1237 s.start.clone()..s.end.clone()
1238 }
1239 })
1240 .collect()
1241 }
1242
1243 #[cfg(any(test, feature = "test-support"))]
1244 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1245 let display_map = self
1246 .display_map
1247 .update(cx, |display_map, cx| display_map.snapshot(cx));
1248 self.selections
1249 .iter()
1250 .chain(
1251 self.pending_selection
1252 .as_ref()
1253 .map(|pending| &pending.selection),
1254 )
1255 .map(|s| {
1256 if s.reversed {
1257 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1258 } else {
1259 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1260 }
1261 })
1262 .collect()
1263 }
1264
1265 pub fn select_ranges<I, T>(
1266 &mut self,
1267 ranges: I,
1268 autoscroll: Option<Autoscroll>,
1269 cx: &mut ViewContext<Self>,
1270 ) where
1271 I: IntoIterator<Item = Range<T>>,
1272 T: ToOffset,
1273 {
1274 let buffer = self.buffer.read(cx).snapshot(cx);
1275 let selections = ranges
1276 .into_iter()
1277 .map(|range| {
1278 let mut start = range.start.to_offset(&buffer);
1279 let mut end = range.end.to_offset(&buffer);
1280 let reversed = if start > end {
1281 mem::swap(&mut start, &mut end);
1282 true
1283 } else {
1284 false
1285 };
1286 Selection {
1287 id: post_inc(&mut self.next_selection_id),
1288 start,
1289 end,
1290 reversed,
1291 goal: SelectionGoal::None,
1292 }
1293 })
1294 .collect::<Vec<_>>();
1295 self.update_selections(selections, autoscroll, cx);
1296 }
1297
1298 #[cfg(any(test, feature = "test-support"))]
1299 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1300 where
1301 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1302 {
1303 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1304 let selections = ranges
1305 .into_iter()
1306 .map(|range| {
1307 let mut start = range.start;
1308 let mut end = range.end;
1309 let reversed = if start > end {
1310 mem::swap(&mut start, &mut end);
1311 true
1312 } else {
1313 false
1314 };
1315 Selection {
1316 id: post_inc(&mut self.next_selection_id),
1317 start: start.to_point(&display_map),
1318 end: end.to_point(&display_map),
1319 reversed,
1320 goal: SelectionGoal::None,
1321 }
1322 })
1323 .collect();
1324 self.update_selections(selections, None, cx);
1325 }
1326
1327 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1328 let text = action.0.as_ref();
1329 if !self.skip_autoclose_end(text, cx) {
1330 self.start_transaction(cx);
1331 self.insert(text, cx);
1332 self.autoclose_pairs(cx);
1333 self.end_transaction(cx);
1334 self.trigger_completion_on_input(text, cx);
1335 }
1336 }
1337
1338 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1339 self.start_transaction(cx);
1340 let mut old_selections = SmallVec::<[_; 32]>::new();
1341 {
1342 let selections = self.local_selections::<usize>(cx);
1343 let buffer = self.buffer.read(cx).snapshot(cx);
1344 for selection in selections.iter() {
1345 let start_point = selection.start.to_point(&buffer);
1346 let indent = buffer
1347 .indent_column_for_line(start_point.row)
1348 .min(start_point.column);
1349 let start = selection.start;
1350 let end = selection.end;
1351
1352 let mut insert_extra_newline = false;
1353 if let Some(language) = buffer.language() {
1354 let leading_whitespace_len = buffer
1355 .reversed_chars_at(start)
1356 .take_while(|c| c.is_whitespace() && *c != '\n')
1357 .map(|c| c.len_utf8())
1358 .sum::<usize>();
1359
1360 let trailing_whitespace_len = buffer
1361 .chars_at(end)
1362 .take_while(|c| c.is_whitespace() && *c != '\n')
1363 .map(|c| c.len_utf8())
1364 .sum::<usize>();
1365
1366 insert_extra_newline = language.brackets().iter().any(|pair| {
1367 let pair_start = pair.start.trim_end();
1368 let pair_end = pair.end.trim_start();
1369
1370 pair.newline
1371 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1372 && buffer.contains_str_at(
1373 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1374 pair_start,
1375 )
1376 });
1377 }
1378
1379 old_selections.push((
1380 selection.id,
1381 buffer.anchor_after(end),
1382 start..end,
1383 indent,
1384 insert_extra_newline,
1385 ));
1386 }
1387 }
1388
1389 self.buffer.update(cx, |buffer, cx| {
1390 let mut delta = 0_isize;
1391 let mut pending_edit: Option<PendingEdit> = None;
1392 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1393 if pending_edit.as_ref().map_or(false, |pending| {
1394 pending.indent != *indent
1395 || pending.insert_extra_newline != *insert_extra_newline
1396 }) {
1397 let pending = pending_edit.take().unwrap();
1398 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1399 new_text.push('\n');
1400 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1401 if pending.insert_extra_newline {
1402 new_text = new_text.repeat(2);
1403 }
1404 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1405 delta += pending.delta;
1406 }
1407
1408 let start = (range.start as isize + delta) as usize;
1409 let end = (range.end as isize + delta) as usize;
1410 let mut text_len = *indent as usize + 1;
1411 if *insert_extra_newline {
1412 text_len *= 2;
1413 }
1414
1415 let pending = pending_edit.get_or_insert_with(Default::default);
1416 pending.delta += text_len as isize - (end - start) as isize;
1417 pending.indent = *indent;
1418 pending.insert_extra_newline = *insert_extra_newline;
1419 pending.ranges.push(start..end);
1420 }
1421
1422 let pending = pending_edit.unwrap();
1423 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1424 new_text.push('\n');
1425 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1426 if pending.insert_extra_newline {
1427 new_text = new_text.repeat(2);
1428 }
1429 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1430
1431 let buffer = buffer.read(cx);
1432 self.selections = self
1433 .selections
1434 .iter()
1435 .cloned()
1436 .zip(old_selections)
1437 .map(
1438 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1439 let mut cursor = end_anchor.to_point(&buffer);
1440 if insert_extra_newline {
1441 cursor.row -= 1;
1442 cursor.column = buffer.line_len(cursor.row);
1443 }
1444 let anchor = buffer.anchor_after(cursor);
1445 new_selection.start = anchor.clone();
1446 new_selection.end = anchor;
1447 new_selection
1448 },
1449 )
1450 .collect();
1451 });
1452
1453 self.request_autoscroll(Autoscroll::Fit, cx);
1454 self.end_transaction(cx);
1455
1456 #[derive(Default)]
1457 struct PendingEdit {
1458 indent: u32,
1459 insert_extra_newline: bool,
1460 delta: isize,
1461 ranges: SmallVec<[Range<usize>; 32]>,
1462 }
1463 }
1464
1465 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1466 self.start_transaction(cx);
1467
1468 let old_selections = self.local_selections::<usize>(cx);
1469 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1470 let anchors = {
1471 let snapshot = buffer.read(cx);
1472 old_selections
1473 .iter()
1474 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1475 .collect::<Vec<_>>()
1476 };
1477 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1478 buffer.edit_with_autoindent(edit_ranges, text, cx);
1479 anchors
1480 });
1481
1482 let selections = {
1483 let snapshot = self.buffer.read(cx).read(cx);
1484 selection_anchors
1485 .into_iter()
1486 .map(|(id, goal, position)| {
1487 let position = position.to_offset(&snapshot);
1488 Selection {
1489 id,
1490 start: position,
1491 end: position,
1492 goal,
1493 reversed: false,
1494 }
1495 })
1496 .collect()
1497 };
1498 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1499 self.end_transaction(cx);
1500 }
1501
1502 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1503 if let Some(selection) = self.newest_anchor_selection() {
1504 if self
1505 .buffer
1506 .read(cx)
1507 .is_completion_trigger(selection.head(), text, cx)
1508 {
1509 self.show_completions(&ShowCompletions, cx);
1510 } else {
1511 self.hide_completions(cx);
1512 }
1513 }
1514 }
1515
1516 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1517 let selections = self.local_selections::<usize>(cx);
1518 let mut bracket_pair_state = None;
1519 let mut new_selections = None;
1520 self.buffer.update(cx, |buffer, cx| {
1521 let mut snapshot = buffer.snapshot(cx);
1522 let left_biased_selections = selections
1523 .iter()
1524 .map(|selection| Selection {
1525 id: selection.id,
1526 start: snapshot.anchor_before(selection.start),
1527 end: snapshot.anchor_before(selection.end),
1528 reversed: selection.reversed,
1529 goal: selection.goal,
1530 })
1531 .collect::<Vec<_>>();
1532
1533 let autoclose_pair = snapshot.language().and_then(|language| {
1534 let first_selection_start = selections.first().unwrap().start;
1535 let pair = language.brackets().iter().find(|pair| {
1536 snapshot.contains_str_at(
1537 first_selection_start.saturating_sub(pair.start.len()),
1538 &pair.start,
1539 )
1540 });
1541 pair.and_then(|pair| {
1542 let should_autoclose = selections[1..].iter().all(|selection| {
1543 snapshot.contains_str_at(
1544 selection.start.saturating_sub(pair.start.len()),
1545 &pair.start,
1546 )
1547 });
1548
1549 if should_autoclose {
1550 Some(pair.clone())
1551 } else {
1552 None
1553 }
1554 })
1555 });
1556
1557 if let Some(pair) = autoclose_pair {
1558 let selection_ranges = selections
1559 .iter()
1560 .map(|selection| {
1561 let start = selection.start.to_offset(&snapshot);
1562 start..start
1563 })
1564 .collect::<SmallVec<[_; 32]>>();
1565
1566 buffer.edit(selection_ranges, &pair.end, cx);
1567 snapshot = buffer.snapshot(cx);
1568
1569 new_selections = Some(
1570 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1571 .collect::<Vec<_>>(),
1572 );
1573
1574 if pair.end.len() == 1 {
1575 let mut delta = 0;
1576 bracket_pair_state = Some(BracketPairState {
1577 ranges: selections
1578 .iter()
1579 .map(move |selection| {
1580 let offset = selection.start + delta;
1581 delta += 1;
1582 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1583 })
1584 .collect(),
1585 pair,
1586 });
1587 }
1588 }
1589 });
1590
1591 if let Some(new_selections) = new_selections {
1592 self.update_selections(new_selections, None, cx);
1593 }
1594 if let Some(bracket_pair_state) = bracket_pair_state {
1595 self.autoclose_stack.push(bracket_pair_state);
1596 }
1597 }
1598
1599 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1600 let old_selections = self.local_selections::<usize>(cx);
1601 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1602 autoclose_pair
1603 } else {
1604 return false;
1605 };
1606 if text != autoclose_pair.pair.end {
1607 return false;
1608 }
1609
1610 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1611
1612 let buffer = self.buffer.read(cx).snapshot(cx);
1613 if old_selections
1614 .iter()
1615 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1616 .all(|(selection, autoclose_range)| {
1617 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1618 selection.is_empty() && selection.start == autoclose_range_end
1619 })
1620 {
1621 let new_selections = old_selections
1622 .into_iter()
1623 .map(|selection| {
1624 let cursor = selection.start + 1;
1625 Selection {
1626 id: selection.id,
1627 start: cursor,
1628 end: cursor,
1629 reversed: false,
1630 goal: SelectionGoal::None,
1631 }
1632 })
1633 .collect();
1634 self.autoclose_stack.pop();
1635 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1636 true
1637 } else {
1638 false
1639 }
1640 }
1641
1642 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1643 let offset = position.to_offset(buffer);
1644 let (word_range, kind) = buffer.surrounding_word(offset);
1645 if offset > word_range.start && kind == Some(CharKind::Word) {
1646 Some(
1647 buffer
1648 .text_for_range(word_range.start..offset)
1649 .collect::<String>(),
1650 )
1651 } else {
1652 None
1653 }
1654 }
1655
1656 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1657 let position = if let Some(selection) = self.newest_anchor_selection() {
1658 selection.head()
1659 } else {
1660 return;
1661 };
1662
1663 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1664 let completions = self
1665 .buffer
1666 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1667
1668 let id = post_inc(&mut self.next_completion_id);
1669 let task = cx.spawn_weak(|this, mut cx| {
1670 async move {
1671 let completions = completions.await?;
1672
1673 let mut completion_state = CompletionState {
1674 id,
1675 initial_position: position,
1676 match_candidates: completions
1677 .iter()
1678 .enumerate()
1679 .map(|(id, completion)| {
1680 StringMatchCandidate::new(
1681 id,
1682 completion.label.text[completion.label.filter_range.clone()].into(),
1683 )
1684 })
1685 .collect(),
1686 completions: completions.into(),
1687 matches: Vec::new().into(),
1688 selected_item: 0,
1689 list: Default::default(),
1690 };
1691
1692 completion_state
1693 .filter(query.as_deref(), cx.background())
1694 .await;
1695
1696 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1697 this.update(&mut cx, |this, cx| {
1698 if let Some(prev_completion_state) = this.completion_state.as_ref() {
1699 if prev_completion_state.id > completion_state.id {
1700 return;
1701 }
1702 }
1703
1704 this.completion_tasks
1705 .retain(|(id, _)| *id > completion_state.id);
1706 if completion_state.matches.is_empty() {
1707 this.hide_completions(cx);
1708 } else if this.focused {
1709 this.completion_state = Some(completion_state);
1710 }
1711
1712 cx.notify();
1713 });
1714 }
1715 Ok::<_, anyhow::Error>(())
1716 }
1717 .log_err()
1718 });
1719 self.completion_tasks.push((id, task));
1720 }
1721
1722 fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionState> {
1723 cx.notify();
1724 self.completion_tasks.clear();
1725 self.completion_state.take()
1726 }
1727
1728 pub fn confirm_completion(
1729 &mut self,
1730 completion_ix: Option<usize>,
1731 cx: &mut ViewContext<Self>,
1732 ) -> Option<Task<Result<()>>> {
1733 let completion_state = self.hide_completions(cx)?;
1734 let mat = completion_state
1735 .matches
1736 .get(completion_ix.unwrap_or(completion_state.selected_item))?;
1737 let completion = completion_state.completions.get(mat.candidate_id)?;
1738
1739 let snippet;
1740 let text;
1741 if completion.is_snippet() {
1742 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1743 text = snippet.as_ref().unwrap().text.clone();
1744 } else {
1745 snippet = None;
1746 text = completion.new_text.clone();
1747 };
1748 let snapshot = self.buffer.read(cx).snapshot(cx);
1749 let old_range = completion.old_range.to_offset(&snapshot);
1750 let old_text = snapshot
1751 .text_for_range(old_range.clone())
1752 .collect::<String>();
1753
1754 let selections = self.local_selections::<usize>(cx);
1755 let newest_selection = selections.iter().max_by_key(|s| s.id)?;
1756 let lookbehind = newest_selection.start.saturating_sub(old_range.start);
1757 let lookahead = old_range.end.saturating_sub(newest_selection.end);
1758 let mut common_prefix_len = old_text
1759 .bytes()
1760 .zip(text.bytes())
1761 .take_while(|(a, b)| a == b)
1762 .count();
1763
1764 let mut ranges = Vec::new();
1765 for selection in &selections {
1766 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
1767 let start = selection.start.saturating_sub(lookbehind);
1768 let end = selection.end + lookahead;
1769 ranges.push(start + common_prefix_len..end);
1770 } else {
1771 common_prefix_len = 0;
1772 ranges.clear();
1773 ranges.extend(selections.iter().map(|s| {
1774 if s.id == newest_selection.id {
1775 old_range.clone()
1776 } else {
1777 s.start..s.end
1778 }
1779 }));
1780 break;
1781 }
1782 }
1783 let text = &text[common_prefix_len..];
1784
1785 self.start_transaction(cx);
1786 if let Some(mut snippet) = snippet {
1787 snippet.text = text.to_string();
1788 for tabstop in snippet.tabstops.iter_mut().flatten() {
1789 tabstop.start -= common_prefix_len as isize;
1790 tabstop.end -= common_prefix_len as isize;
1791 }
1792
1793 self.insert_snippet(&ranges, snippet, cx).log_err();
1794 } else {
1795 self.buffer.update(cx, |buffer, cx| {
1796 buffer.edit_with_autoindent(ranges, text, cx);
1797 });
1798 }
1799 self.end_transaction(cx);
1800
1801 Some(self.buffer.update(cx, |buffer, cx| {
1802 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1803 }))
1804 }
1805
1806 pub fn has_completions(&self) -> bool {
1807 self.completion_state
1808 .as_ref()
1809 .map_or(false, |c| !c.matches.is_empty())
1810 }
1811
1812 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1813 enum CompletionTag {}
1814
1815 self.completion_state.as_ref().map(|state| {
1816 let build_settings = self.build_settings.clone();
1817 let settings = build_settings(cx);
1818 let completions = state.completions.clone();
1819 let matches = state.matches.clone();
1820 let selected_item = state.selected_item;
1821 UniformList::new(
1822 state.list.clone(),
1823 matches.len(),
1824 move |range, items, cx| {
1825 let settings = build_settings(cx);
1826 let start_ix = range.start;
1827 for (ix, mat) in matches[range].iter().enumerate() {
1828 let completion = &completions[mat.candidate_id];
1829 let item_ix = start_ix + ix;
1830 items.push(
1831 MouseEventHandler::new::<CompletionTag, _, _, _>(
1832 mat.candidate_id,
1833 cx,
1834 |state, _| {
1835 let item_style = if item_ix == selected_item {
1836 settings.style.autocomplete.selected_item
1837 } else if state.hovered {
1838 settings.style.autocomplete.hovered_item
1839 } else {
1840 settings.style.autocomplete.item
1841 };
1842
1843 Text::new(
1844 completion.label.text.clone(),
1845 settings.style.text.clone(),
1846 )
1847 .with_soft_wrap(false)
1848 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
1849 &completion.label.text,
1850 settings.style.text.color.into(),
1851 styled_runs_for_completion_label(
1852 &completion.label,
1853 settings.style.text.color,
1854 &settings.style.syntax,
1855 ),
1856 &mat.positions,
1857 ))
1858 .contained()
1859 .with_style(item_style)
1860 .boxed()
1861 },
1862 )
1863 .with_cursor_style(CursorStyle::PointingHand)
1864 .on_mouse_down(move |cx| {
1865 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
1866 })
1867 .boxed(),
1868 );
1869 }
1870 },
1871 )
1872 .with_width_from_item(
1873 state
1874 .matches
1875 .iter()
1876 .enumerate()
1877 .max_by_key(|(_, mat)| {
1878 state.completions[mat.candidate_id]
1879 .label
1880 .text
1881 .chars()
1882 .count()
1883 })
1884 .map(|(ix, _)| ix),
1885 )
1886 .contained()
1887 .with_style(settings.style.autocomplete.container)
1888 .boxed()
1889 })
1890 }
1891
1892 pub fn insert_snippet(
1893 &mut self,
1894 insertion_ranges: &[Range<usize>],
1895 snippet: Snippet,
1896 cx: &mut ViewContext<Self>,
1897 ) -> Result<()> {
1898 let tabstops = self.buffer.update(cx, |buffer, cx| {
1899 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
1900
1901 let snapshot = &*buffer.read(cx);
1902 let snippet = &snippet;
1903 snippet
1904 .tabstops
1905 .iter()
1906 .map(|tabstop| {
1907 let mut tabstop_ranges = tabstop
1908 .iter()
1909 .flat_map(|tabstop_range| {
1910 let mut delta = 0 as isize;
1911 insertion_ranges.iter().map(move |insertion_range| {
1912 let insertion_start = insertion_range.start as isize + delta;
1913 delta +=
1914 snippet.text.len() as isize - insertion_range.len() as isize;
1915
1916 let start = snapshot.anchor_before(
1917 (insertion_start + tabstop_range.start) as usize,
1918 );
1919 let end = snapshot
1920 .anchor_after((insertion_start + tabstop_range.end) as usize);
1921 start..end
1922 })
1923 })
1924 .collect::<Vec<_>>();
1925 tabstop_ranges
1926 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
1927 tabstop_ranges
1928 })
1929 .collect::<Vec<_>>()
1930 });
1931
1932 if let Some(tabstop) = tabstops.first() {
1933 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
1934 self.snippet_stack.push(SnippetState {
1935 active_index: 0,
1936 ranges: tabstops,
1937 });
1938 }
1939
1940 Ok(())
1941 }
1942
1943 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1944 self.move_to_snippet_tabstop(Bias::Right, cx)
1945 }
1946
1947 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
1948 self.move_to_snippet_tabstop(Bias::Left, cx);
1949 }
1950
1951 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
1952 let buffer = self.buffer.read(cx).snapshot(cx);
1953
1954 if let Some(snippet) = self.snippet_stack.last_mut() {
1955 match bias {
1956 Bias::Left => {
1957 if snippet.active_index > 0 {
1958 snippet.active_index -= 1;
1959 } else {
1960 return false;
1961 }
1962 }
1963 Bias::Right => {
1964 if snippet.active_index + 1 < snippet.ranges.len() {
1965 snippet.active_index += 1;
1966 } else {
1967 return false;
1968 }
1969 }
1970 }
1971 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
1972 let new_selections = current_ranges
1973 .iter()
1974 .map(|new_range| {
1975 let new_range = new_range.to_offset(&buffer);
1976 Selection {
1977 id: post_inc(&mut self.next_selection_id),
1978 start: new_range.start,
1979 end: new_range.end,
1980 reversed: false,
1981 goal: SelectionGoal::None,
1982 }
1983 })
1984 .collect();
1985
1986 // Remove the snippet state when moving to the last tabstop.
1987 if snippet.active_index + 1 == snippet.ranges.len() {
1988 self.snippet_stack.pop();
1989 }
1990
1991 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1992 return true;
1993 }
1994 self.snippet_stack.pop();
1995 }
1996
1997 false
1998 }
1999
2000 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2001 self.start_transaction(cx);
2002 self.select_all(&SelectAll, cx);
2003 self.insert("", cx);
2004 self.end_transaction(cx);
2005 }
2006
2007 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2008 self.start_transaction(cx);
2009 let mut selections = self.local_selections::<Point>(cx);
2010 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2011 for selection in &mut selections {
2012 if selection.is_empty() {
2013 let head = selection.head().to_display_point(&display_map);
2014 let cursor = movement::left(&display_map, head)
2015 .unwrap()
2016 .to_point(&display_map);
2017 selection.set_head(cursor);
2018 selection.goal = SelectionGoal::None;
2019 }
2020 }
2021 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2022 self.insert("", cx);
2023 self.end_transaction(cx);
2024 }
2025
2026 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2027 self.start_transaction(cx);
2028 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2029 let mut selections = self.local_selections::<Point>(cx);
2030 for selection in &mut selections {
2031 if selection.is_empty() {
2032 let head = selection.head().to_display_point(&display_map);
2033 let cursor = movement::right(&display_map, head)
2034 .unwrap()
2035 .to_point(&display_map);
2036 selection.set_head(cursor);
2037 selection.goal = SelectionGoal::None;
2038 }
2039 }
2040 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2041 self.insert(&"", cx);
2042 self.end_transaction(cx);
2043 }
2044
2045 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2046 if self.move_to_next_snippet_tabstop(cx) {
2047 return;
2048 }
2049
2050 self.start_transaction(cx);
2051 let tab_size = (self.build_settings)(cx).tab_size;
2052 let mut selections = self.local_selections::<Point>(cx);
2053 let mut last_indent = None;
2054 self.buffer.update(cx, |buffer, cx| {
2055 for selection in &mut selections {
2056 if selection.is_empty() {
2057 let char_column = buffer
2058 .read(cx)
2059 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2060 .flat_map(str::chars)
2061 .count();
2062 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2063 buffer.edit(
2064 [selection.start..selection.start],
2065 " ".repeat(chars_to_next_tab_stop),
2066 cx,
2067 );
2068 selection.start.column += chars_to_next_tab_stop as u32;
2069 selection.end = selection.start;
2070 } else {
2071 let mut start_row = selection.start.row;
2072 let mut end_row = selection.end.row + 1;
2073
2074 // If a selection ends at the beginning of a line, don't indent
2075 // that last line.
2076 if selection.end.column == 0 {
2077 end_row -= 1;
2078 }
2079
2080 // Avoid re-indenting a row that has already been indented by a
2081 // previous selection, but still update this selection's column
2082 // to reflect that indentation.
2083 if let Some((last_indent_row, last_indent_len)) = last_indent {
2084 if last_indent_row == selection.start.row {
2085 selection.start.column += last_indent_len;
2086 start_row += 1;
2087 }
2088 if last_indent_row == selection.end.row {
2089 selection.end.column += last_indent_len;
2090 }
2091 }
2092
2093 for row in start_row..end_row {
2094 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2095 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2096 let row_start = Point::new(row, 0);
2097 buffer.edit(
2098 [row_start..row_start],
2099 " ".repeat(columns_to_next_tab_stop),
2100 cx,
2101 );
2102
2103 // Update this selection's endpoints to reflect the indentation.
2104 if row == selection.start.row {
2105 selection.start.column += columns_to_next_tab_stop as u32;
2106 }
2107 if row == selection.end.row {
2108 selection.end.column += columns_to_next_tab_stop as u32;
2109 }
2110
2111 last_indent = Some((row, columns_to_next_tab_stop as u32));
2112 }
2113 }
2114 }
2115 });
2116
2117 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2118 self.end_transaction(cx);
2119 }
2120
2121 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2122 if !self.snippet_stack.is_empty() {
2123 self.move_to_prev_snippet_tabstop(cx);
2124 return;
2125 }
2126
2127 self.start_transaction(cx);
2128 let tab_size = (self.build_settings)(cx).tab_size;
2129 let selections = self.local_selections::<Point>(cx);
2130 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2131 let mut deletion_ranges = Vec::new();
2132 let mut last_outdent = None;
2133 {
2134 let buffer = self.buffer.read(cx).read(cx);
2135 for selection in &selections {
2136 let mut rows = selection.spanned_rows(false, &display_map);
2137
2138 // Avoid re-outdenting a row that has already been outdented by a
2139 // previous selection.
2140 if let Some(last_row) = last_outdent {
2141 if last_row == rows.start {
2142 rows.start += 1;
2143 }
2144 }
2145
2146 for row in rows {
2147 let column = buffer.indent_column_for_line(row) as usize;
2148 if column > 0 {
2149 let mut deletion_len = (column % tab_size) as u32;
2150 if deletion_len == 0 {
2151 deletion_len = tab_size as u32;
2152 }
2153 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2154 last_outdent = Some(row);
2155 }
2156 }
2157 }
2158 }
2159 self.buffer.update(cx, |buffer, cx| {
2160 buffer.edit(deletion_ranges, "", cx);
2161 });
2162
2163 self.update_selections(
2164 self.local_selections::<usize>(cx),
2165 Some(Autoscroll::Fit),
2166 cx,
2167 );
2168 self.end_transaction(cx);
2169 }
2170
2171 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2172 self.start_transaction(cx);
2173
2174 let selections = self.local_selections::<Point>(cx);
2175 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2176 let buffer = self.buffer.read(cx).snapshot(cx);
2177
2178 let mut new_cursors = Vec::new();
2179 let mut edit_ranges = Vec::new();
2180 let mut selections = selections.iter().peekable();
2181 while let Some(selection) = selections.next() {
2182 let mut rows = selection.spanned_rows(false, &display_map);
2183 let goal_display_column = selection.head().to_display_point(&display_map).column();
2184
2185 // Accumulate contiguous regions of rows that we want to delete.
2186 while let Some(next_selection) = selections.peek() {
2187 let next_rows = next_selection.spanned_rows(false, &display_map);
2188 if next_rows.start <= rows.end {
2189 rows.end = next_rows.end;
2190 selections.next().unwrap();
2191 } else {
2192 break;
2193 }
2194 }
2195
2196 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2197 let edit_end;
2198 let cursor_buffer_row;
2199 if buffer.max_point().row >= rows.end {
2200 // If there's a line after the range, delete the \n from the end of the row range
2201 // and position the cursor on the next line.
2202 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2203 cursor_buffer_row = rows.end;
2204 } else {
2205 // If there isn't a line after the range, delete the \n from the line before the
2206 // start of the row range and position the cursor there.
2207 edit_start = edit_start.saturating_sub(1);
2208 edit_end = buffer.len();
2209 cursor_buffer_row = rows.start.saturating_sub(1);
2210 }
2211
2212 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2213 *cursor.column_mut() =
2214 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2215
2216 new_cursors.push((
2217 selection.id,
2218 buffer.anchor_after(cursor.to_point(&display_map)),
2219 ));
2220 edit_ranges.push(edit_start..edit_end);
2221 }
2222
2223 let buffer = self.buffer.update(cx, |buffer, cx| {
2224 buffer.edit(edit_ranges, "", cx);
2225 buffer.snapshot(cx)
2226 });
2227 let new_selections = new_cursors
2228 .into_iter()
2229 .map(|(id, cursor)| {
2230 let cursor = cursor.to_point(&buffer);
2231 Selection {
2232 id,
2233 start: cursor,
2234 end: cursor,
2235 reversed: false,
2236 goal: SelectionGoal::None,
2237 }
2238 })
2239 .collect();
2240 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2241 self.end_transaction(cx);
2242 }
2243
2244 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2245 self.start_transaction(cx);
2246
2247 let selections = self.local_selections::<Point>(cx);
2248 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2249 let buffer = &display_map.buffer_snapshot;
2250
2251 let mut edits = Vec::new();
2252 let mut selections_iter = selections.iter().peekable();
2253 while let Some(selection) = selections_iter.next() {
2254 // Avoid duplicating the same lines twice.
2255 let mut rows = selection.spanned_rows(false, &display_map);
2256
2257 while let Some(next_selection) = selections_iter.peek() {
2258 let next_rows = next_selection.spanned_rows(false, &display_map);
2259 if next_rows.start <= rows.end - 1 {
2260 rows.end = next_rows.end;
2261 selections_iter.next().unwrap();
2262 } else {
2263 break;
2264 }
2265 }
2266
2267 // Copy the text from the selected row region and splice it at the start of the region.
2268 let start = Point::new(rows.start, 0);
2269 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2270 let text = buffer
2271 .text_for_range(start..end)
2272 .chain(Some("\n"))
2273 .collect::<String>();
2274 edits.push((start, text, rows.len() as u32));
2275 }
2276
2277 self.buffer.update(cx, |buffer, cx| {
2278 for (point, text, _) in edits.into_iter().rev() {
2279 buffer.edit(Some(point..point), text, cx);
2280 }
2281 });
2282
2283 self.request_autoscroll(Autoscroll::Fit, cx);
2284 self.end_transaction(cx);
2285 }
2286
2287 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2288 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2289 let buffer = self.buffer.read(cx).snapshot(cx);
2290
2291 let mut edits = Vec::new();
2292 let mut unfold_ranges = Vec::new();
2293 let mut refold_ranges = Vec::new();
2294
2295 let selections = self.local_selections::<Point>(cx);
2296 let mut selections = selections.iter().peekable();
2297 let mut contiguous_row_selections = Vec::new();
2298 let mut new_selections = Vec::new();
2299
2300 while let Some(selection) = selections.next() {
2301 // Find all the selections that span a contiguous row range
2302 contiguous_row_selections.push(selection.clone());
2303 let start_row = selection.start.row;
2304 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2305 display_map.next_line_boundary(selection.end).0.row + 1
2306 } else {
2307 selection.end.row
2308 };
2309
2310 while let Some(next_selection) = selections.peek() {
2311 if next_selection.start.row <= end_row {
2312 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2313 display_map.next_line_boundary(next_selection.end).0.row + 1
2314 } else {
2315 next_selection.end.row
2316 };
2317 contiguous_row_selections.push(selections.next().unwrap().clone());
2318 } else {
2319 break;
2320 }
2321 }
2322
2323 // Move the text spanned by the row range to be before the line preceding the row range
2324 if start_row > 0 {
2325 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2326 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2327 let insertion_point = display_map
2328 .prev_line_boundary(Point::new(start_row - 1, 0))
2329 .0;
2330
2331 // Don't move lines across excerpts
2332 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2333 let text = buffer
2334 .text_for_range(range_to_move.clone())
2335 .flat_map(|s| s.chars())
2336 .skip(1)
2337 .chain(['\n'])
2338 .collect::<String>();
2339
2340 edits.push((
2341 buffer.anchor_after(range_to_move.start)
2342 ..buffer.anchor_before(range_to_move.end),
2343 String::new(),
2344 ));
2345 let insertion_anchor = buffer.anchor_after(insertion_point);
2346 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2347
2348 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2349
2350 // Move selections up
2351 new_selections.extend(contiguous_row_selections.drain(..).map(
2352 |mut selection| {
2353 selection.start.row -= row_delta;
2354 selection.end.row -= row_delta;
2355 selection
2356 },
2357 ));
2358
2359 // Move folds up
2360 unfold_ranges.push(range_to_move.clone());
2361 for fold in display_map.folds_in_range(
2362 buffer.anchor_before(range_to_move.start)
2363 ..buffer.anchor_after(range_to_move.end),
2364 ) {
2365 let mut start = fold.start.to_point(&buffer);
2366 let mut end = fold.end.to_point(&buffer);
2367 start.row -= row_delta;
2368 end.row -= row_delta;
2369 refold_ranges.push(start..end);
2370 }
2371 }
2372 }
2373
2374 // If we didn't move line(s), preserve the existing selections
2375 new_selections.extend(contiguous_row_selections.drain(..));
2376 }
2377
2378 self.start_transaction(cx);
2379 self.unfold_ranges(unfold_ranges, cx);
2380 self.buffer.update(cx, |buffer, cx| {
2381 for (range, text) in edits {
2382 buffer.edit([range], text, cx);
2383 }
2384 });
2385 self.fold_ranges(refold_ranges, cx);
2386 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2387 self.end_transaction(cx);
2388 }
2389
2390 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2391 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2392 let buffer = self.buffer.read(cx).snapshot(cx);
2393
2394 let mut edits = Vec::new();
2395 let mut unfold_ranges = Vec::new();
2396 let mut refold_ranges = Vec::new();
2397
2398 let selections = self.local_selections::<Point>(cx);
2399 let mut selections = selections.iter().peekable();
2400 let mut contiguous_row_selections = Vec::new();
2401 let mut new_selections = Vec::new();
2402
2403 while let Some(selection) = selections.next() {
2404 // Find all the selections that span a contiguous row range
2405 contiguous_row_selections.push(selection.clone());
2406 let start_row = selection.start.row;
2407 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2408 display_map.next_line_boundary(selection.end).0.row + 1
2409 } else {
2410 selection.end.row
2411 };
2412
2413 while let Some(next_selection) = selections.peek() {
2414 if next_selection.start.row <= end_row {
2415 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2416 display_map.next_line_boundary(next_selection.end).0.row + 1
2417 } else {
2418 next_selection.end.row
2419 };
2420 contiguous_row_selections.push(selections.next().unwrap().clone());
2421 } else {
2422 break;
2423 }
2424 }
2425
2426 // Move the text spanned by the row range to be after the last line of the row range
2427 if end_row <= buffer.max_point().row {
2428 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2429 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2430
2431 // Don't move lines across excerpt boundaries
2432 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2433 let mut text = String::from("\n");
2434 text.extend(buffer.text_for_range(range_to_move.clone()));
2435 text.pop(); // Drop trailing newline
2436 edits.push((
2437 buffer.anchor_after(range_to_move.start)
2438 ..buffer.anchor_before(range_to_move.end),
2439 String::new(),
2440 ));
2441 let insertion_anchor = buffer.anchor_after(insertion_point);
2442 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2443
2444 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2445
2446 // Move selections down
2447 new_selections.extend(contiguous_row_selections.drain(..).map(
2448 |mut selection| {
2449 selection.start.row += row_delta;
2450 selection.end.row += row_delta;
2451 selection
2452 },
2453 ));
2454
2455 // Move folds down
2456 unfold_ranges.push(range_to_move.clone());
2457 for fold in display_map.folds_in_range(
2458 buffer.anchor_before(range_to_move.start)
2459 ..buffer.anchor_after(range_to_move.end),
2460 ) {
2461 let mut start = fold.start.to_point(&buffer);
2462 let mut end = fold.end.to_point(&buffer);
2463 start.row += row_delta;
2464 end.row += row_delta;
2465 refold_ranges.push(start..end);
2466 }
2467 }
2468 }
2469
2470 // If we didn't move line(s), preserve the existing selections
2471 new_selections.extend(contiguous_row_selections.drain(..));
2472 }
2473
2474 self.start_transaction(cx);
2475 self.unfold_ranges(unfold_ranges, cx);
2476 self.buffer.update(cx, |buffer, cx| {
2477 for (range, text) in edits {
2478 buffer.edit([range], text, cx);
2479 }
2480 });
2481 self.fold_ranges(refold_ranges, cx);
2482 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2483 self.end_transaction(cx);
2484 }
2485
2486 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2487 self.start_transaction(cx);
2488 let mut text = String::new();
2489 let mut selections = self.local_selections::<Point>(cx);
2490 let mut clipboard_selections = Vec::with_capacity(selections.len());
2491 {
2492 let buffer = self.buffer.read(cx).read(cx);
2493 let max_point = buffer.max_point();
2494 for selection in &mut selections {
2495 let is_entire_line = selection.is_empty();
2496 if is_entire_line {
2497 selection.start = Point::new(selection.start.row, 0);
2498 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2499 }
2500 let mut len = 0;
2501 for chunk in buffer.text_for_range(selection.start..selection.end) {
2502 text.push_str(chunk);
2503 len += chunk.len();
2504 }
2505 clipboard_selections.push(ClipboardSelection {
2506 len,
2507 is_entire_line,
2508 });
2509 }
2510 }
2511 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2512 self.insert("", cx);
2513 self.end_transaction(cx);
2514
2515 cx.as_mut()
2516 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2517 }
2518
2519 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2520 let selections = self.local_selections::<Point>(cx);
2521 let mut text = String::new();
2522 let mut clipboard_selections = Vec::with_capacity(selections.len());
2523 {
2524 let buffer = self.buffer.read(cx).read(cx);
2525 let max_point = buffer.max_point();
2526 for selection in selections.iter() {
2527 let mut start = selection.start;
2528 let mut end = selection.end;
2529 let is_entire_line = selection.is_empty();
2530 if is_entire_line {
2531 start = Point::new(start.row, 0);
2532 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2533 }
2534 let mut len = 0;
2535 for chunk in buffer.text_for_range(start..end) {
2536 text.push_str(chunk);
2537 len += chunk.len();
2538 }
2539 clipboard_selections.push(ClipboardSelection {
2540 len,
2541 is_entire_line,
2542 });
2543 }
2544 }
2545
2546 cx.as_mut()
2547 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2548 }
2549
2550 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2551 if let Some(item) = cx.as_mut().read_from_clipboard() {
2552 let clipboard_text = item.text();
2553 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2554 let mut selections = self.local_selections::<usize>(cx);
2555 let all_selections_were_entire_line =
2556 clipboard_selections.iter().all(|s| s.is_entire_line);
2557 if clipboard_selections.len() != selections.len() {
2558 clipboard_selections.clear();
2559 }
2560
2561 let mut delta = 0_isize;
2562 let mut start_offset = 0;
2563 for (i, selection) in selections.iter_mut().enumerate() {
2564 let to_insert;
2565 let entire_line;
2566 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2567 let end_offset = start_offset + clipboard_selection.len;
2568 to_insert = &clipboard_text[start_offset..end_offset];
2569 entire_line = clipboard_selection.is_entire_line;
2570 start_offset = end_offset
2571 } else {
2572 to_insert = clipboard_text.as_str();
2573 entire_line = all_selections_were_entire_line;
2574 }
2575
2576 selection.start = (selection.start as isize + delta) as usize;
2577 selection.end = (selection.end as isize + delta) as usize;
2578
2579 self.buffer.update(cx, |buffer, cx| {
2580 // If the corresponding selection was empty when this slice of the
2581 // clipboard text was written, then the entire line containing the
2582 // selection was copied. If this selection is also currently empty,
2583 // then paste the line before the current line of the buffer.
2584 let range = if selection.is_empty() && entire_line {
2585 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2586 let line_start = selection.start - column;
2587 line_start..line_start
2588 } else {
2589 selection.start..selection.end
2590 };
2591
2592 delta += to_insert.len() as isize - range.len() as isize;
2593 buffer.edit([range], to_insert, cx);
2594 selection.start += to_insert.len();
2595 selection.end = selection.start;
2596 });
2597 }
2598 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2599 } else {
2600 self.insert(clipboard_text, cx);
2601 }
2602 }
2603 }
2604
2605 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2606 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2607 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2608 self.set_selections(selections, cx);
2609 }
2610 self.request_autoscroll(Autoscroll::Fit, cx);
2611 }
2612 }
2613
2614 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2615 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2616 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2617 self.set_selections(selections, cx);
2618 }
2619 self.request_autoscroll(Autoscroll::Fit, cx);
2620 }
2621 }
2622
2623 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2624 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2625 let mut selections = self.local_selections::<Point>(cx);
2626 for selection in &mut selections {
2627 let start = selection.start.to_display_point(&display_map);
2628 let end = selection.end.to_display_point(&display_map);
2629
2630 if start != end {
2631 selection.end = selection.start.clone();
2632 } else {
2633 let cursor = movement::left(&display_map, start)
2634 .unwrap()
2635 .to_point(&display_map);
2636 selection.start = cursor.clone();
2637 selection.end = cursor;
2638 }
2639 selection.reversed = false;
2640 selection.goal = SelectionGoal::None;
2641 }
2642 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2643 }
2644
2645 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2646 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2647 let mut selections = self.local_selections::<Point>(cx);
2648 for selection in &mut selections {
2649 let head = selection.head().to_display_point(&display_map);
2650 let cursor = movement::left(&display_map, head)
2651 .unwrap()
2652 .to_point(&display_map);
2653 selection.set_head(cursor);
2654 selection.goal = SelectionGoal::None;
2655 }
2656 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2657 }
2658
2659 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2660 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2661 let mut selections = self.local_selections::<Point>(cx);
2662 for selection in &mut selections {
2663 let start = selection.start.to_display_point(&display_map);
2664 let end = selection.end.to_display_point(&display_map);
2665
2666 if start != end {
2667 selection.start = selection.end.clone();
2668 } else {
2669 let cursor = movement::right(&display_map, end)
2670 .unwrap()
2671 .to_point(&display_map);
2672 selection.start = cursor;
2673 selection.end = cursor;
2674 }
2675 selection.reversed = false;
2676 selection.goal = SelectionGoal::None;
2677 }
2678 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2679 }
2680
2681 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2682 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2683 let mut selections = self.local_selections::<Point>(cx);
2684 for selection in &mut selections {
2685 let head = selection.head().to_display_point(&display_map);
2686 let cursor = movement::right(&display_map, head)
2687 .unwrap()
2688 .to_point(&display_map);
2689 selection.set_head(cursor);
2690 selection.goal = SelectionGoal::None;
2691 }
2692 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2693 }
2694
2695 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2696 if let Some(completion_state) = &mut self.completion_state {
2697 if completion_state.selected_item > 0 {
2698 completion_state.selected_item -= 1;
2699 completion_state
2700 .list
2701 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2702 }
2703 cx.notify();
2704 return;
2705 }
2706
2707 if matches!(self.mode, EditorMode::SingleLine) {
2708 cx.propagate_action();
2709 return;
2710 }
2711
2712 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2713 let mut selections = self.local_selections::<Point>(cx);
2714 for selection in &mut selections {
2715 let start = selection.start.to_display_point(&display_map);
2716 let end = selection.end.to_display_point(&display_map);
2717 if start != end {
2718 selection.goal = SelectionGoal::None;
2719 }
2720
2721 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2722 let cursor = start.to_point(&display_map);
2723 selection.start = cursor;
2724 selection.end = cursor;
2725 selection.goal = goal;
2726 selection.reversed = false;
2727 }
2728 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2729 }
2730
2731 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2732 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2733 let mut selections = self.local_selections::<Point>(cx);
2734 for selection in &mut selections {
2735 let head = selection.head().to_display_point(&display_map);
2736 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2737 let cursor = head.to_point(&display_map);
2738 selection.set_head(cursor);
2739 selection.goal = goal;
2740 }
2741 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2742 }
2743
2744 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2745 if let Some(completion_state) = &mut self.completion_state {
2746 if completion_state.selected_item + 1 < completion_state.matches.len() {
2747 completion_state.selected_item += 1;
2748 completion_state
2749 .list
2750 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2751 }
2752 cx.notify();
2753 return;
2754 }
2755
2756 if matches!(self.mode, EditorMode::SingleLine) {
2757 cx.propagate_action();
2758 return;
2759 }
2760
2761 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2762 let mut selections = self.local_selections::<Point>(cx);
2763 for selection in &mut selections {
2764 let start = selection.start.to_display_point(&display_map);
2765 let end = selection.end.to_display_point(&display_map);
2766 if start != end {
2767 selection.goal = SelectionGoal::None;
2768 }
2769
2770 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2771 let cursor = start.to_point(&display_map);
2772 selection.start = cursor;
2773 selection.end = cursor;
2774 selection.goal = goal;
2775 selection.reversed = false;
2776 }
2777 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2778 }
2779
2780 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2781 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2782 let mut selections = self.local_selections::<Point>(cx);
2783 for selection in &mut selections {
2784 let head = selection.head().to_display_point(&display_map);
2785 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2786 let cursor = head.to_point(&display_map);
2787 selection.set_head(cursor);
2788 selection.goal = goal;
2789 }
2790 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2791 }
2792
2793 pub fn move_to_previous_word_boundary(
2794 &mut self,
2795 _: &MoveToPreviousWordBoundary,
2796 cx: &mut ViewContext<Self>,
2797 ) {
2798 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2799 let mut selections = self.local_selections::<Point>(cx);
2800 for selection in &mut selections {
2801 let head = selection.head().to_display_point(&display_map);
2802 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2803 selection.start = cursor.clone();
2804 selection.end = cursor;
2805 selection.reversed = false;
2806 selection.goal = SelectionGoal::None;
2807 }
2808 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2809 }
2810
2811 pub fn select_to_previous_word_boundary(
2812 &mut self,
2813 _: &SelectToPreviousWordBoundary,
2814 cx: &mut ViewContext<Self>,
2815 ) {
2816 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2817 let mut selections = self.local_selections::<Point>(cx);
2818 for selection in &mut selections {
2819 let head = selection.head().to_display_point(&display_map);
2820 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2821 selection.set_head(cursor);
2822 selection.goal = SelectionGoal::None;
2823 }
2824 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2825 }
2826
2827 pub fn delete_to_previous_word_boundary(
2828 &mut self,
2829 _: &DeleteToPreviousWordBoundary,
2830 cx: &mut ViewContext<Self>,
2831 ) {
2832 self.start_transaction(cx);
2833 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2834 let mut selections = self.local_selections::<Point>(cx);
2835 for selection in &mut selections {
2836 if selection.is_empty() {
2837 let head = selection.head().to_display_point(&display_map);
2838 let cursor =
2839 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2840 selection.set_head(cursor);
2841 selection.goal = SelectionGoal::None;
2842 }
2843 }
2844 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2845 self.insert("", cx);
2846 self.end_transaction(cx);
2847 }
2848
2849 pub fn move_to_next_word_boundary(
2850 &mut self,
2851 _: &MoveToNextWordBoundary,
2852 cx: &mut ViewContext<Self>,
2853 ) {
2854 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2855 let mut selections = self.local_selections::<Point>(cx);
2856 for selection in &mut selections {
2857 let head = selection.head().to_display_point(&display_map);
2858 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2859 selection.start = cursor;
2860 selection.end = cursor;
2861 selection.reversed = false;
2862 selection.goal = SelectionGoal::None;
2863 }
2864 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2865 }
2866
2867 pub fn select_to_next_word_boundary(
2868 &mut self,
2869 _: &SelectToNextWordBoundary,
2870 cx: &mut ViewContext<Self>,
2871 ) {
2872 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2873 let mut selections = self.local_selections::<Point>(cx);
2874 for selection in &mut selections {
2875 let head = selection.head().to_display_point(&display_map);
2876 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2877 selection.set_head(cursor);
2878 selection.goal = SelectionGoal::None;
2879 }
2880 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2881 }
2882
2883 pub fn delete_to_next_word_boundary(
2884 &mut self,
2885 _: &DeleteToNextWordBoundary,
2886 cx: &mut ViewContext<Self>,
2887 ) {
2888 self.start_transaction(cx);
2889 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2890 let mut selections = self.local_selections::<Point>(cx);
2891 for selection in &mut selections {
2892 if selection.is_empty() {
2893 let head = selection.head().to_display_point(&display_map);
2894 let cursor =
2895 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2896 selection.set_head(cursor);
2897 selection.goal = SelectionGoal::None;
2898 }
2899 }
2900 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2901 self.insert("", cx);
2902 self.end_transaction(cx);
2903 }
2904
2905 pub fn move_to_beginning_of_line(
2906 &mut self,
2907 _: &MoveToBeginningOfLine,
2908 cx: &mut ViewContext<Self>,
2909 ) {
2910 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2911 let mut selections = self.local_selections::<Point>(cx);
2912 for selection in &mut selections {
2913 let head = selection.head().to_display_point(&display_map);
2914 let new_head = movement::line_beginning(&display_map, head, true);
2915 let cursor = new_head.to_point(&display_map);
2916 selection.start = cursor;
2917 selection.end = cursor;
2918 selection.reversed = false;
2919 selection.goal = SelectionGoal::None;
2920 }
2921 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2922 }
2923
2924 pub fn select_to_beginning_of_line(
2925 &mut self,
2926 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2927 cx: &mut ViewContext<Self>,
2928 ) {
2929 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2930 let mut selections = self.local_selections::<Point>(cx);
2931 for selection in &mut selections {
2932 let head = selection.head().to_display_point(&display_map);
2933 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2934 selection.set_head(new_head.to_point(&display_map));
2935 selection.goal = SelectionGoal::None;
2936 }
2937 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2938 }
2939
2940 pub fn delete_to_beginning_of_line(
2941 &mut self,
2942 _: &DeleteToBeginningOfLine,
2943 cx: &mut ViewContext<Self>,
2944 ) {
2945 self.start_transaction(cx);
2946 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2947 self.backspace(&Backspace, cx);
2948 self.end_transaction(cx);
2949 }
2950
2951 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2952 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2953 let mut selections = self.local_selections::<Point>(cx);
2954 {
2955 for selection in &mut selections {
2956 let head = selection.head().to_display_point(&display_map);
2957 let new_head = movement::line_end(&display_map, head);
2958 let anchor = new_head.to_point(&display_map);
2959 selection.start = anchor.clone();
2960 selection.end = anchor;
2961 selection.reversed = false;
2962 selection.goal = SelectionGoal::None;
2963 }
2964 }
2965 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2966 }
2967
2968 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2969 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2970 let mut selections = self.local_selections::<Point>(cx);
2971 for selection in &mut selections {
2972 let head = selection.head().to_display_point(&display_map);
2973 let new_head = movement::line_end(&display_map, head);
2974 selection.set_head(new_head.to_point(&display_map));
2975 selection.goal = SelectionGoal::None;
2976 }
2977 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2978 }
2979
2980 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2981 self.start_transaction(cx);
2982 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2983 self.delete(&Delete, cx);
2984 self.end_transaction(cx);
2985 }
2986
2987 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2988 self.start_transaction(cx);
2989 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2990 self.cut(&Cut, cx);
2991 self.end_transaction(cx);
2992 }
2993
2994 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2995 if matches!(self.mode, EditorMode::SingleLine) {
2996 cx.propagate_action();
2997 return;
2998 }
2999
3000 let selection = Selection {
3001 id: post_inc(&mut self.next_selection_id),
3002 start: 0,
3003 end: 0,
3004 reversed: false,
3005 goal: SelectionGoal::None,
3006 };
3007 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3008 }
3009
3010 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3011 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3012 selection.set_head(Point::zero());
3013 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3014 }
3015
3016 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3017 if matches!(self.mode, EditorMode::SingleLine) {
3018 cx.propagate_action();
3019 return;
3020 }
3021
3022 let cursor = self.buffer.read(cx).read(cx).len();
3023 let selection = Selection {
3024 id: post_inc(&mut self.next_selection_id),
3025 start: cursor,
3026 end: cursor,
3027 reversed: false,
3028 goal: SelectionGoal::None,
3029 };
3030 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3031 }
3032
3033 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3034 self.nav_history = nav_history;
3035 }
3036
3037 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3038 self.nav_history.as_ref()
3039 }
3040
3041 fn push_to_nav_history(
3042 &self,
3043 position: Anchor,
3044 new_position: Option<Point>,
3045 cx: &mut ViewContext<Self>,
3046 ) {
3047 if let Some(nav_history) = &self.nav_history {
3048 let buffer = self.buffer.read(cx).read(cx);
3049 let offset = position.to_offset(&buffer);
3050 let point = position.to_point(&buffer);
3051 drop(buffer);
3052
3053 if let Some(new_position) = new_position {
3054 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3055 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3056 return;
3057 }
3058 }
3059
3060 nav_history.push(Some(NavigationData {
3061 anchor: position,
3062 offset,
3063 }));
3064 }
3065 }
3066
3067 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3068 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3069 selection.set_head(self.buffer.read(cx).read(cx).len());
3070 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3071 }
3072
3073 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3074 let selection = Selection {
3075 id: post_inc(&mut self.next_selection_id),
3076 start: 0,
3077 end: self.buffer.read(cx).read(cx).len(),
3078 reversed: false,
3079 goal: SelectionGoal::None,
3080 };
3081 self.update_selections(vec![selection], None, cx);
3082 }
3083
3084 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3085 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3086 let mut selections = self.local_selections::<Point>(cx);
3087 let max_point = display_map.buffer_snapshot.max_point();
3088 for selection in &mut selections {
3089 let rows = selection.spanned_rows(true, &display_map);
3090 selection.start = Point::new(rows.start, 0);
3091 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3092 selection.reversed = false;
3093 }
3094 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3095 }
3096
3097 pub fn split_selection_into_lines(
3098 &mut self,
3099 _: &SplitSelectionIntoLines,
3100 cx: &mut ViewContext<Self>,
3101 ) {
3102 let mut to_unfold = Vec::new();
3103 let mut new_selections = Vec::new();
3104 {
3105 let selections = self.local_selections::<Point>(cx);
3106 let buffer = self.buffer.read(cx).read(cx);
3107 for selection in selections {
3108 for row in selection.start.row..selection.end.row {
3109 let cursor = Point::new(row, buffer.line_len(row));
3110 new_selections.push(Selection {
3111 id: post_inc(&mut self.next_selection_id),
3112 start: cursor,
3113 end: cursor,
3114 reversed: false,
3115 goal: SelectionGoal::None,
3116 });
3117 }
3118 new_selections.push(Selection {
3119 id: selection.id,
3120 start: selection.end,
3121 end: selection.end,
3122 reversed: false,
3123 goal: SelectionGoal::None,
3124 });
3125 to_unfold.push(selection.start..selection.end);
3126 }
3127 }
3128 self.unfold_ranges(to_unfold, cx);
3129 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3130 }
3131
3132 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3133 self.add_selection(true, cx);
3134 }
3135
3136 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3137 self.add_selection(false, cx);
3138 }
3139
3140 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3141 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3142 let mut selections = self.local_selections::<Point>(cx);
3143 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3144 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3145 let range = oldest_selection.display_range(&display_map).sorted();
3146 let columns = cmp::min(range.start.column(), range.end.column())
3147 ..cmp::max(range.start.column(), range.end.column());
3148
3149 selections.clear();
3150 let mut stack = Vec::new();
3151 for row in range.start.row()..=range.end.row() {
3152 if let Some(selection) = self.build_columnar_selection(
3153 &display_map,
3154 row,
3155 &columns,
3156 oldest_selection.reversed,
3157 ) {
3158 stack.push(selection.id);
3159 selections.push(selection);
3160 }
3161 }
3162
3163 if above {
3164 stack.reverse();
3165 }
3166
3167 AddSelectionsState { above, stack }
3168 });
3169
3170 let last_added_selection = *state.stack.last().unwrap();
3171 let mut new_selections = Vec::new();
3172 if above == state.above {
3173 let end_row = if above {
3174 0
3175 } else {
3176 display_map.max_point().row()
3177 };
3178
3179 'outer: for selection in selections {
3180 if selection.id == last_added_selection {
3181 let range = selection.display_range(&display_map).sorted();
3182 debug_assert_eq!(range.start.row(), range.end.row());
3183 let mut row = range.start.row();
3184 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3185 {
3186 start..end
3187 } else {
3188 cmp::min(range.start.column(), range.end.column())
3189 ..cmp::max(range.start.column(), range.end.column())
3190 };
3191
3192 while row != end_row {
3193 if above {
3194 row -= 1;
3195 } else {
3196 row += 1;
3197 }
3198
3199 if let Some(new_selection) = self.build_columnar_selection(
3200 &display_map,
3201 row,
3202 &columns,
3203 selection.reversed,
3204 ) {
3205 state.stack.push(new_selection.id);
3206 if above {
3207 new_selections.push(new_selection);
3208 new_selections.push(selection);
3209 } else {
3210 new_selections.push(selection);
3211 new_selections.push(new_selection);
3212 }
3213
3214 continue 'outer;
3215 }
3216 }
3217 }
3218
3219 new_selections.push(selection);
3220 }
3221 } else {
3222 new_selections = selections;
3223 new_selections.retain(|s| s.id != last_added_selection);
3224 state.stack.pop();
3225 }
3226
3227 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3228 if state.stack.len() > 1 {
3229 self.add_selections_state = Some(state);
3230 }
3231 }
3232
3233 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3234 let replace_newest = action.0;
3235 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3236 let buffer = &display_map.buffer_snapshot;
3237 let mut selections = self.local_selections::<usize>(cx);
3238 if let Some(mut select_next_state) = self.select_next_state.take() {
3239 let query = &select_next_state.query;
3240 if !select_next_state.done {
3241 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3242 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3243 let mut next_selected_range = None;
3244
3245 let bytes_after_last_selection =
3246 buffer.bytes_in_range(last_selection.end..buffer.len());
3247 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3248 let query_matches = query
3249 .stream_find_iter(bytes_after_last_selection)
3250 .map(|result| (last_selection.end, result))
3251 .chain(
3252 query
3253 .stream_find_iter(bytes_before_first_selection)
3254 .map(|result| (0, result)),
3255 );
3256 for (start_offset, query_match) in query_matches {
3257 let query_match = query_match.unwrap(); // can only fail due to I/O
3258 let offset_range =
3259 start_offset + query_match.start()..start_offset + query_match.end();
3260 let display_range = offset_range.start.to_display_point(&display_map)
3261 ..offset_range.end.to_display_point(&display_map);
3262
3263 if !select_next_state.wordwise
3264 || (!movement::is_inside_word(&display_map, display_range.start)
3265 && !movement::is_inside_word(&display_map, display_range.end))
3266 {
3267 next_selected_range = Some(offset_range);
3268 break;
3269 }
3270 }
3271
3272 if let Some(next_selected_range) = next_selected_range {
3273 if replace_newest {
3274 if let Some(newest_id) =
3275 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3276 {
3277 selections.retain(|s| s.id != newest_id);
3278 }
3279 }
3280 selections.push(Selection {
3281 id: post_inc(&mut self.next_selection_id),
3282 start: next_selected_range.start,
3283 end: next_selected_range.end,
3284 reversed: false,
3285 goal: SelectionGoal::None,
3286 });
3287 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3288 } else {
3289 select_next_state.done = true;
3290 }
3291 }
3292
3293 self.select_next_state = Some(select_next_state);
3294 } else if selections.len() == 1 {
3295 let selection = selections.last_mut().unwrap();
3296 if selection.start == selection.end {
3297 let word_range = movement::surrounding_word(
3298 &display_map,
3299 selection.start.to_display_point(&display_map),
3300 );
3301 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3302 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3303 selection.goal = SelectionGoal::None;
3304 selection.reversed = false;
3305
3306 let query = buffer
3307 .text_for_range(selection.start..selection.end)
3308 .collect::<String>();
3309 let select_state = SelectNextState {
3310 query: AhoCorasick::new_auto_configured(&[query]),
3311 wordwise: true,
3312 done: false,
3313 };
3314 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3315 self.select_next_state = Some(select_state);
3316 } else {
3317 let query = buffer
3318 .text_for_range(selection.start..selection.end)
3319 .collect::<String>();
3320 self.select_next_state = Some(SelectNextState {
3321 query: AhoCorasick::new_auto_configured(&[query]),
3322 wordwise: false,
3323 done: false,
3324 });
3325 self.select_next(action, cx);
3326 }
3327 }
3328 }
3329
3330 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3331 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3332 // as that portion won't be used for detecting if a line is a comment.
3333 let full_comment_prefix =
3334 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3335 prefix.to_string()
3336 } else {
3337 return;
3338 };
3339 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3340 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3341
3342 self.start_transaction(cx);
3343 let mut selections = self.local_selections::<Point>(cx);
3344 let mut all_selection_lines_are_comments = true;
3345 let mut edit_ranges = Vec::new();
3346 let mut last_toggled_row = None;
3347 self.buffer.update(cx, |buffer, cx| {
3348 for selection in &mut selections {
3349 edit_ranges.clear();
3350 let snapshot = buffer.snapshot(cx);
3351
3352 let end_row =
3353 if selection.end.row > selection.start.row && selection.end.column == 0 {
3354 selection.end.row
3355 } else {
3356 selection.end.row + 1
3357 };
3358
3359 for row in selection.start.row..end_row {
3360 // If multiple selections contain a given row, avoid processing that
3361 // row more than once.
3362 if last_toggled_row == Some(row) {
3363 continue;
3364 } else {
3365 last_toggled_row = Some(row);
3366 }
3367
3368 if snapshot.is_line_blank(row) {
3369 continue;
3370 }
3371
3372 let start = Point::new(row, snapshot.indent_column_for_line(row));
3373 let mut line_bytes = snapshot
3374 .bytes_in_range(start..snapshot.max_point())
3375 .flatten()
3376 .copied();
3377
3378 // If this line currently begins with the line comment prefix, then record
3379 // the range containing the prefix.
3380 if all_selection_lines_are_comments
3381 && line_bytes
3382 .by_ref()
3383 .take(comment_prefix.len())
3384 .eq(comment_prefix.bytes())
3385 {
3386 // Include any whitespace that matches the comment prefix.
3387 let matching_whitespace_len = line_bytes
3388 .zip(comment_prefix_whitespace.bytes())
3389 .take_while(|(a, b)| a == b)
3390 .count() as u32;
3391 let end = Point::new(
3392 row,
3393 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3394 );
3395 edit_ranges.push(start..end);
3396 }
3397 // If this line does not begin with the line comment prefix, then record
3398 // the position where the prefix should be inserted.
3399 else {
3400 all_selection_lines_are_comments = false;
3401 edit_ranges.push(start..start);
3402 }
3403 }
3404
3405 if !edit_ranges.is_empty() {
3406 if all_selection_lines_are_comments {
3407 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3408 } else {
3409 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3410 let edit_ranges = edit_ranges.iter().map(|range| {
3411 let position = Point::new(range.start.row, min_column);
3412 position..position
3413 });
3414 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3415 }
3416 }
3417 }
3418 });
3419
3420 self.update_selections(
3421 self.local_selections::<usize>(cx),
3422 Some(Autoscroll::Fit),
3423 cx,
3424 );
3425 self.end_transaction(cx);
3426 }
3427
3428 pub fn select_larger_syntax_node(
3429 &mut self,
3430 _: &SelectLargerSyntaxNode,
3431 cx: &mut ViewContext<Self>,
3432 ) {
3433 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3434 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3435 let buffer = self.buffer.read(cx).snapshot(cx);
3436
3437 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3438 let mut selected_larger_node = false;
3439 let new_selections = old_selections
3440 .iter()
3441 .map(|selection| {
3442 let old_range = selection.start..selection.end;
3443 let mut new_range = old_range.clone();
3444 while let Some(containing_range) =
3445 buffer.range_for_syntax_ancestor(new_range.clone())
3446 {
3447 new_range = containing_range;
3448 if !display_map.intersects_fold(new_range.start)
3449 && !display_map.intersects_fold(new_range.end)
3450 {
3451 break;
3452 }
3453 }
3454
3455 selected_larger_node |= new_range != old_range;
3456 Selection {
3457 id: selection.id,
3458 start: new_range.start,
3459 end: new_range.end,
3460 goal: SelectionGoal::None,
3461 reversed: selection.reversed,
3462 }
3463 })
3464 .collect::<Vec<_>>();
3465
3466 if selected_larger_node {
3467 stack.push(old_selections);
3468 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3469 }
3470 self.select_larger_syntax_node_stack = stack;
3471 }
3472
3473 pub fn select_smaller_syntax_node(
3474 &mut self,
3475 _: &SelectSmallerSyntaxNode,
3476 cx: &mut ViewContext<Self>,
3477 ) {
3478 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3479 if let Some(selections) = stack.pop() {
3480 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3481 }
3482 self.select_larger_syntax_node_stack = stack;
3483 }
3484
3485 pub fn move_to_enclosing_bracket(
3486 &mut self,
3487 _: &MoveToEnclosingBracket,
3488 cx: &mut ViewContext<Self>,
3489 ) {
3490 let mut selections = self.local_selections::<usize>(cx);
3491 let buffer = self.buffer.read(cx).snapshot(cx);
3492 for selection in &mut selections {
3493 if let Some((open_range, close_range)) =
3494 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3495 {
3496 let close_range = close_range.to_inclusive();
3497 let destination = if close_range.contains(&selection.start)
3498 && close_range.contains(&selection.end)
3499 {
3500 open_range.end
3501 } else {
3502 *close_range.start()
3503 };
3504 selection.start = destination;
3505 selection.end = destination;
3506 }
3507 }
3508
3509 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3510 }
3511
3512 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3513 let buffer = self.buffer.read(cx).snapshot(cx);
3514 let selection = self.newest_selection::<usize>(&buffer);
3515 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3516 active_diagnostics
3517 .primary_range
3518 .to_offset(&buffer)
3519 .to_inclusive()
3520 });
3521 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3522 if active_primary_range.contains(&selection.head()) {
3523 *active_primary_range.end()
3524 } else {
3525 selection.head()
3526 }
3527 } else {
3528 selection.head()
3529 };
3530
3531 loop {
3532 let next_group = buffer
3533 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3534 .find_map(|entry| {
3535 if entry.diagnostic.is_primary
3536 && !entry.range.is_empty()
3537 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3538 {
3539 Some((entry.range, entry.diagnostic.group_id))
3540 } else {
3541 None
3542 }
3543 });
3544
3545 if let Some((primary_range, group_id)) = next_group {
3546 self.activate_diagnostics(group_id, cx);
3547 self.update_selections(
3548 vec![Selection {
3549 id: selection.id,
3550 start: primary_range.start,
3551 end: primary_range.start,
3552 reversed: false,
3553 goal: SelectionGoal::None,
3554 }],
3555 Some(Autoscroll::Center),
3556 cx,
3557 );
3558 break;
3559 } else if search_start == 0 {
3560 break;
3561 } else {
3562 // Cycle around to the start of the buffer, potentially moving back to the start of
3563 // the currently active diagnostic.
3564 search_start = 0;
3565 active_primary_range.take();
3566 }
3567 }
3568 }
3569
3570 pub fn go_to_definition(
3571 workspace: &mut Workspace,
3572 _: &GoToDefinition,
3573 cx: &mut ViewContext<Workspace>,
3574 ) {
3575 let active_item = workspace.active_item(cx);
3576 let editor_handle = if let Some(editor) = active_item
3577 .as_ref()
3578 .and_then(|item| item.act_as::<Self>(cx))
3579 {
3580 editor
3581 } else {
3582 return;
3583 };
3584
3585 let editor = editor_handle.read(cx);
3586 let buffer = editor.buffer.read(cx);
3587 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3588 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3589 let definitions = workspace
3590 .project()
3591 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3592 cx.spawn(|workspace, mut cx| async move {
3593 let definitions = definitions.await?;
3594 workspace.update(&mut cx, |workspace, cx| {
3595 for definition in definitions {
3596 let range = definition
3597 .target_range
3598 .to_offset(definition.target_buffer.read(cx));
3599 let target_editor_handle = workspace
3600 .open_item(BufferItemHandle(definition.target_buffer), cx)
3601 .downcast::<Self>()
3602 .unwrap();
3603
3604 target_editor_handle.update(cx, |target_editor, cx| {
3605 // When selecting a definition in a different buffer, disable the nav history
3606 // to avoid creating a history entry at the previous cursor location.
3607 let disabled_history = if editor_handle == target_editor_handle {
3608 None
3609 } else {
3610 target_editor.nav_history.take()
3611 };
3612 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3613 if disabled_history.is_some() {
3614 target_editor.nav_history = disabled_history;
3615 }
3616 });
3617 }
3618 });
3619
3620 Ok::<(), anyhow::Error>(())
3621 })
3622 .detach_and_log_err(cx);
3623 }
3624
3625 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3626 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3627 let buffer = self.buffer.read(cx).snapshot(cx);
3628 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3629 let is_valid = buffer
3630 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3631 .any(|entry| {
3632 entry.diagnostic.is_primary
3633 && !entry.range.is_empty()
3634 && entry.range.start == primary_range_start
3635 && entry.diagnostic.message == active_diagnostics.primary_message
3636 });
3637
3638 if is_valid != active_diagnostics.is_valid {
3639 active_diagnostics.is_valid = is_valid;
3640 let mut new_styles = HashMap::default();
3641 for (block_id, diagnostic) in &active_diagnostics.blocks {
3642 new_styles.insert(
3643 *block_id,
3644 diagnostic_block_renderer(
3645 diagnostic.clone(),
3646 is_valid,
3647 self.build_settings.clone(),
3648 ),
3649 );
3650 }
3651 self.display_map
3652 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3653 }
3654 }
3655 }
3656
3657 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3658 self.dismiss_diagnostics(cx);
3659 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3660 let buffer = self.buffer.read(cx).snapshot(cx);
3661
3662 let mut primary_range = None;
3663 let mut primary_message = None;
3664 let mut group_end = Point::zero();
3665 let diagnostic_group = buffer
3666 .diagnostic_group::<Point>(group_id)
3667 .map(|entry| {
3668 if entry.range.end > group_end {
3669 group_end = entry.range.end;
3670 }
3671 if entry.diagnostic.is_primary {
3672 primary_range = Some(entry.range.clone());
3673 primary_message = Some(entry.diagnostic.message.clone());
3674 }
3675 entry
3676 })
3677 .collect::<Vec<_>>();
3678 let primary_range = primary_range.unwrap();
3679 let primary_message = primary_message.unwrap();
3680 let primary_range =
3681 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3682
3683 let blocks = display_map
3684 .insert_blocks(
3685 diagnostic_group.iter().map(|entry| {
3686 let build_settings = self.build_settings.clone();
3687 let diagnostic = entry.diagnostic.clone();
3688 let message_height = diagnostic.message.lines().count() as u8;
3689
3690 BlockProperties {
3691 position: buffer.anchor_after(entry.range.start),
3692 height: message_height,
3693 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3694 disposition: BlockDisposition::Below,
3695 }
3696 }),
3697 cx,
3698 )
3699 .into_iter()
3700 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3701 .collect();
3702
3703 Some(ActiveDiagnosticGroup {
3704 primary_range,
3705 primary_message,
3706 blocks,
3707 is_valid: true,
3708 })
3709 });
3710 }
3711
3712 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3713 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3714 self.display_map.update(cx, |display_map, cx| {
3715 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3716 });
3717 cx.notify();
3718 }
3719 }
3720
3721 fn build_columnar_selection(
3722 &mut self,
3723 display_map: &DisplaySnapshot,
3724 row: u32,
3725 columns: &Range<u32>,
3726 reversed: bool,
3727 ) -> Option<Selection<Point>> {
3728 let is_empty = columns.start == columns.end;
3729 let line_len = display_map.line_len(row);
3730 if columns.start < line_len || (is_empty && columns.start == line_len) {
3731 let start = DisplayPoint::new(row, columns.start);
3732 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3733 Some(Selection {
3734 id: post_inc(&mut self.next_selection_id),
3735 start: start.to_point(display_map),
3736 end: end.to_point(display_map),
3737 reversed,
3738 goal: SelectionGoal::ColumnRange {
3739 start: columns.start,
3740 end: columns.end,
3741 },
3742 })
3743 } else {
3744 None
3745 }
3746 }
3747
3748 pub fn local_selections_in_range(
3749 &self,
3750 range: Range<Anchor>,
3751 display_map: &DisplaySnapshot,
3752 ) -> Vec<Selection<Point>> {
3753 let buffer = &display_map.buffer_snapshot;
3754
3755 let start_ix = match self
3756 .selections
3757 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3758 {
3759 Ok(ix) | Err(ix) => ix,
3760 };
3761 let end_ix = match self
3762 .selections
3763 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3764 {
3765 Ok(ix) => ix + 1,
3766 Err(ix) => ix,
3767 };
3768
3769 fn point_selection(
3770 selection: &Selection<Anchor>,
3771 buffer: &MultiBufferSnapshot,
3772 ) -> Selection<Point> {
3773 let start = selection.start.to_point(&buffer);
3774 let end = selection.end.to_point(&buffer);
3775 Selection {
3776 id: selection.id,
3777 start,
3778 end,
3779 reversed: selection.reversed,
3780 goal: selection.goal,
3781 }
3782 }
3783
3784 self.selections[start_ix..end_ix]
3785 .iter()
3786 .chain(
3787 self.pending_selection
3788 .as_ref()
3789 .map(|pending| &pending.selection),
3790 )
3791 .map(|s| point_selection(s, &buffer))
3792 .collect()
3793 }
3794
3795 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3796 where
3797 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3798 {
3799 let buffer = self.buffer.read(cx).snapshot(cx);
3800 let mut selections = self
3801 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3802 .peekable();
3803
3804 let mut pending_selection = self.pending_selection::<D>(&buffer);
3805
3806 iter::from_fn(move || {
3807 if let Some(pending) = pending_selection.as_mut() {
3808 while let Some(next_selection) = selections.peek() {
3809 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3810 let next_selection = selections.next().unwrap();
3811 if next_selection.start < pending.start {
3812 pending.start = next_selection.start;
3813 }
3814 if next_selection.end > pending.end {
3815 pending.end = next_selection.end;
3816 }
3817 } else if next_selection.end < pending.start {
3818 return selections.next();
3819 } else {
3820 break;
3821 }
3822 }
3823
3824 pending_selection.take()
3825 } else {
3826 selections.next()
3827 }
3828 })
3829 .collect()
3830 }
3831
3832 fn resolve_selections<'a, D, I>(
3833 &self,
3834 selections: I,
3835 snapshot: &MultiBufferSnapshot,
3836 ) -> impl 'a + Iterator<Item = Selection<D>>
3837 where
3838 D: TextDimension + Ord + Sub<D, Output = D>,
3839 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3840 {
3841 let (to_summarize, selections) = selections.into_iter().tee();
3842 let mut summaries = snapshot
3843 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3844 .into_iter();
3845 selections.map(move |s| Selection {
3846 id: s.id,
3847 start: summaries.next().unwrap(),
3848 end: summaries.next().unwrap(),
3849 reversed: s.reversed,
3850 goal: s.goal,
3851 })
3852 }
3853
3854 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3855 &self,
3856 snapshot: &MultiBufferSnapshot,
3857 ) -> Option<Selection<D>> {
3858 self.pending_selection
3859 .as_ref()
3860 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3861 }
3862
3863 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3864 &self,
3865 selection: &Selection<Anchor>,
3866 buffer: &MultiBufferSnapshot,
3867 ) -> Selection<D> {
3868 Selection {
3869 id: selection.id,
3870 start: selection.start.summary::<D>(&buffer),
3871 end: selection.end.summary::<D>(&buffer),
3872 reversed: selection.reversed,
3873 goal: selection.goal,
3874 }
3875 }
3876
3877 fn selection_count<'a>(&self) -> usize {
3878 let mut count = self.selections.len();
3879 if self.pending_selection.is_some() {
3880 count += 1;
3881 }
3882 count
3883 }
3884
3885 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3886 &self,
3887 snapshot: &MultiBufferSnapshot,
3888 ) -> Selection<D> {
3889 self.selections
3890 .iter()
3891 .min_by_key(|s| s.id)
3892 .map(|selection| self.resolve_selection(selection, snapshot))
3893 .or_else(|| self.pending_selection(snapshot))
3894 .unwrap()
3895 }
3896
3897 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3898 &self,
3899 snapshot: &MultiBufferSnapshot,
3900 ) -> Selection<D> {
3901 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3902 }
3903
3904 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3905 self.pending_selection
3906 .as_ref()
3907 .map(|s| &s.selection)
3908 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3909 }
3910
3911 pub fn update_selections<T>(
3912 &mut self,
3913 mut selections: Vec<Selection<T>>,
3914 autoscroll: Option<Autoscroll>,
3915 cx: &mut ViewContext<Self>,
3916 ) where
3917 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3918 {
3919 let buffer = self.buffer.read(cx).snapshot(cx);
3920 selections.sort_unstable_by_key(|s| s.start);
3921
3922 // Merge overlapping selections.
3923 let mut i = 1;
3924 while i < selections.len() {
3925 if selections[i - 1].end >= selections[i].start {
3926 let removed = selections.remove(i);
3927 if removed.start < selections[i - 1].start {
3928 selections[i - 1].start = removed.start;
3929 }
3930 if removed.end > selections[i - 1].end {
3931 selections[i - 1].end = removed.end;
3932 }
3933 } else {
3934 i += 1;
3935 }
3936 }
3937
3938 if let Some(autoscroll) = autoscroll {
3939 self.request_autoscroll(autoscroll, cx);
3940 }
3941
3942 self.set_selections(
3943 Arc::from_iter(selections.into_iter().map(|selection| {
3944 let end_bias = if selection.end > selection.start {
3945 Bias::Left
3946 } else {
3947 Bias::Right
3948 };
3949 Selection {
3950 id: selection.id,
3951 start: buffer.anchor_after(selection.start),
3952 end: buffer.anchor_at(selection.end, end_bias),
3953 reversed: selection.reversed,
3954 goal: selection.goal,
3955 }
3956 })),
3957 cx,
3958 );
3959 }
3960
3961 /// Compute new ranges for any selections that were located in excerpts that have
3962 /// since been removed.
3963 ///
3964 /// Returns a `HashMap` indicating which selections whose former head position
3965 /// was no longer present. The keys of the map are selection ids. The values are
3966 /// the id of the new excerpt where the head of the selection has been moved.
3967 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3968 let snapshot = self.buffer.read(cx).read(cx);
3969 let anchors_with_status = snapshot.refresh_anchors(
3970 self.selections
3971 .iter()
3972 .flat_map(|selection| [&selection.start, &selection.end]),
3973 );
3974 let offsets =
3975 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3976 let offsets = offsets.chunks(2);
3977 let statuses = anchors_with_status
3978 .chunks(2)
3979 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3980
3981 let mut selections_with_lost_position = HashMap::default();
3982 let new_selections = offsets
3983 .zip(statuses)
3984 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3985 let selection = &self.selections[selection_ix];
3986 let kept_head = if selection.reversed {
3987 kept_start
3988 } else {
3989 kept_end
3990 };
3991 if !kept_head {
3992 selections_with_lost_position
3993 .insert(selection.id, selection.head().excerpt_id.clone());
3994 }
3995
3996 Selection {
3997 id: selection.id,
3998 start: offsets[0],
3999 end: offsets[1],
4000 reversed: selection.reversed,
4001 goal: selection.goal,
4002 }
4003 })
4004 .collect();
4005 drop(snapshot);
4006 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4007 selections_with_lost_position
4008 }
4009
4010 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4011 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4012 self.selections = selections;
4013 if self.focused {
4014 self.buffer.update(cx, |buffer, cx| {
4015 buffer.set_active_selections(&self.selections, cx)
4016 });
4017 }
4018
4019 let buffer = self.buffer.read(cx).snapshot(cx);
4020 self.pending_selection = None;
4021 self.add_selections_state = None;
4022 self.select_next_state = None;
4023 self.select_larger_syntax_node_stack.clear();
4024 self.autoclose_stack.invalidate(&self.selections, &buffer);
4025 self.snippet_stack.invalidate(&self.selections, &buffer);
4026
4027 let new_cursor_position = self
4028 .selections
4029 .iter()
4030 .max_by_key(|s| s.id)
4031 .map(|s| s.head());
4032 if let Some(old_cursor_position) = old_cursor_position {
4033 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4034 self.push_to_nav_history(
4035 old_cursor_position,
4036 Some(new_cursor_position.to_point(&buffer)),
4037 cx,
4038 );
4039 }
4040 }
4041
4042 if let Some((completion_state, cursor_position)) =
4043 self.completion_state.as_mut().zip(new_cursor_position)
4044 {
4045 let cursor_position = cursor_position.to_offset(&buffer);
4046 let (word_range, kind) =
4047 buffer.surrounding_word(completion_state.initial_position.clone());
4048 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4049 {
4050 let query = Self::completion_query(&buffer, cursor_position);
4051 cx.background()
4052 .block(completion_state.filter(query.as_deref(), cx.background().clone()));
4053 self.show_completions(&ShowCompletions, cx);
4054 } else {
4055 self.hide_completions(cx);
4056 }
4057 }
4058
4059 self.pause_cursor_blinking(cx);
4060 cx.emit(Event::SelectionsChanged);
4061 }
4062
4063 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4064 self.autoscroll_request = Some(autoscroll);
4065 cx.notify();
4066 }
4067
4068 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4069 self.start_transaction_at(Instant::now(), cx);
4070 }
4071
4072 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4073 self.end_selection(cx);
4074 if let Some(tx_id) = self
4075 .buffer
4076 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4077 {
4078 self.selection_history
4079 .insert(tx_id, (self.selections.clone(), None));
4080 }
4081 }
4082
4083 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4084 self.end_transaction_at(Instant::now(), cx);
4085 }
4086
4087 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4088 if let Some(tx_id) = self
4089 .buffer
4090 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4091 {
4092 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4093 *end_selections = Some(self.selections.clone());
4094 } else {
4095 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4096 }
4097 }
4098 }
4099
4100 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4101 log::info!("Editor::page_up");
4102 }
4103
4104 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4105 log::info!("Editor::page_down");
4106 }
4107
4108 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4109 let mut fold_ranges = Vec::new();
4110
4111 let selections = self.local_selections::<Point>(cx);
4112 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4113 for selection in selections {
4114 let range = selection.display_range(&display_map).sorted();
4115 let buffer_start_row = range.start.to_point(&display_map).row;
4116
4117 for row in (0..=range.end.row()).rev() {
4118 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4119 let fold_range = self.foldable_range_for_line(&display_map, row);
4120 if fold_range.end.row >= buffer_start_row {
4121 fold_ranges.push(fold_range);
4122 if row <= range.start.row() {
4123 break;
4124 }
4125 }
4126 }
4127 }
4128 }
4129
4130 self.fold_ranges(fold_ranges, cx);
4131 }
4132
4133 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4134 let selections = self.local_selections::<Point>(cx);
4135 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4136 let buffer = &display_map.buffer_snapshot;
4137 let ranges = selections
4138 .iter()
4139 .map(|s| {
4140 let range = s.display_range(&display_map).sorted();
4141 let mut start = range.start.to_point(&display_map);
4142 let mut end = range.end.to_point(&display_map);
4143 start.column = 0;
4144 end.column = buffer.line_len(end.row);
4145 start..end
4146 })
4147 .collect::<Vec<_>>();
4148 self.unfold_ranges(ranges, cx);
4149 }
4150
4151 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4152 let max_point = display_map.max_point();
4153 if display_row >= max_point.row() {
4154 false
4155 } else {
4156 let (start_indent, is_blank) = display_map.line_indent(display_row);
4157 if is_blank {
4158 false
4159 } else {
4160 for display_row in display_row + 1..=max_point.row() {
4161 let (indent, is_blank) = display_map.line_indent(display_row);
4162 if !is_blank {
4163 return indent > start_indent;
4164 }
4165 }
4166 false
4167 }
4168 }
4169 }
4170
4171 fn foldable_range_for_line(
4172 &self,
4173 display_map: &DisplaySnapshot,
4174 start_row: u32,
4175 ) -> Range<Point> {
4176 let max_point = display_map.max_point();
4177
4178 let (start_indent, _) = display_map.line_indent(start_row);
4179 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4180 let mut end = None;
4181 for row in start_row + 1..=max_point.row() {
4182 let (indent, is_blank) = display_map.line_indent(row);
4183 if !is_blank && indent <= start_indent {
4184 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4185 break;
4186 }
4187 }
4188
4189 let end = end.unwrap_or(max_point);
4190 return start.to_point(display_map)..end.to_point(display_map);
4191 }
4192
4193 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4194 let selections = self.local_selections::<Point>(cx);
4195 let ranges = selections.into_iter().map(|s| s.start..s.end);
4196 self.fold_ranges(ranges, cx);
4197 }
4198
4199 fn fold_ranges<T: ToOffset>(
4200 &mut self,
4201 ranges: impl IntoIterator<Item = Range<T>>,
4202 cx: &mut ViewContext<Self>,
4203 ) {
4204 let mut ranges = ranges.into_iter().peekable();
4205 if ranges.peek().is_some() {
4206 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4207 self.request_autoscroll(Autoscroll::Fit, cx);
4208 cx.notify();
4209 }
4210 }
4211
4212 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4213 if !ranges.is_empty() {
4214 self.display_map
4215 .update(cx, |map, cx| map.unfold(ranges, cx));
4216 self.request_autoscroll(Autoscroll::Fit, cx);
4217 cx.notify();
4218 }
4219 }
4220
4221 pub fn insert_blocks(
4222 &mut self,
4223 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4224 cx: &mut ViewContext<Self>,
4225 ) -> Vec<BlockId> {
4226 let blocks = self
4227 .display_map
4228 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4229 self.request_autoscroll(Autoscroll::Fit, cx);
4230 blocks
4231 }
4232
4233 pub fn replace_blocks(
4234 &mut self,
4235 blocks: HashMap<BlockId, RenderBlock>,
4236 cx: &mut ViewContext<Self>,
4237 ) {
4238 self.display_map
4239 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4240 self.request_autoscroll(Autoscroll::Fit, cx);
4241 }
4242
4243 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4244 self.display_map.update(cx, |display_map, cx| {
4245 display_map.remove_blocks(block_ids, cx)
4246 });
4247 }
4248
4249 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4250 self.display_map
4251 .update(cx, |map, cx| map.snapshot(cx))
4252 .longest_row()
4253 }
4254
4255 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4256 self.display_map
4257 .update(cx, |map, cx| map.snapshot(cx))
4258 .max_point()
4259 }
4260
4261 pub fn text(&self, cx: &AppContext) -> String {
4262 self.buffer.read(cx).read(cx).text()
4263 }
4264
4265 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4266 self.display_map
4267 .update(cx, |map, cx| map.snapshot(cx))
4268 .text()
4269 }
4270
4271 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4272 self.display_map
4273 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4274 }
4275
4276 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4277 self.highlighted_rows = rows;
4278 }
4279
4280 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4281 self.highlighted_rows.clone()
4282 }
4283
4284 pub fn highlight_ranges<T: 'static>(
4285 &mut self,
4286 ranges: Vec<Range<Anchor>>,
4287 color: Color,
4288 cx: &mut ViewContext<Self>,
4289 ) {
4290 self.highlighted_ranges
4291 .insert(TypeId::of::<T>(), (color, ranges));
4292 cx.notify();
4293 }
4294
4295 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4296 self.highlighted_ranges.remove(&TypeId::of::<T>());
4297 cx.notify();
4298 }
4299
4300 #[cfg(feature = "test-support")]
4301 pub fn all_highlighted_ranges(
4302 &mut self,
4303 cx: &mut ViewContext<Self>,
4304 ) -> Vec<(Range<DisplayPoint>, Color)> {
4305 let snapshot = self.snapshot(cx);
4306 let buffer = &snapshot.buffer_snapshot;
4307 let start = buffer.anchor_before(0);
4308 let end = buffer.anchor_after(buffer.len());
4309 self.highlighted_ranges_in_range(start..end, &snapshot)
4310 }
4311
4312 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4313 self.highlighted_ranges
4314 .get(&TypeId::of::<T>())
4315 .map(|(color, ranges)| (*color, ranges.as_slice()))
4316 }
4317
4318 pub fn highlighted_ranges_in_range(
4319 &self,
4320 search_range: Range<Anchor>,
4321 display_snapshot: &DisplaySnapshot,
4322 ) -> Vec<(Range<DisplayPoint>, Color)> {
4323 let mut results = Vec::new();
4324 let buffer = &display_snapshot.buffer_snapshot;
4325 for (color, ranges) in self.highlighted_ranges.values() {
4326 let start_ix = match ranges.binary_search_by(|probe| {
4327 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4328 if cmp.is_gt() {
4329 Ordering::Greater
4330 } else {
4331 Ordering::Less
4332 }
4333 }) {
4334 Ok(i) | Err(i) => i,
4335 };
4336 for range in &ranges[start_ix..] {
4337 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4338 break;
4339 }
4340 let start = range
4341 .start
4342 .to_point(buffer)
4343 .to_display_point(display_snapshot);
4344 let end = range
4345 .end
4346 .to_point(buffer)
4347 .to_display_point(display_snapshot);
4348 results.push((start..end, *color))
4349 }
4350 }
4351 results
4352 }
4353
4354 fn next_blink_epoch(&mut self) -> usize {
4355 self.blink_epoch += 1;
4356 self.blink_epoch
4357 }
4358
4359 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4360 if !self.focused {
4361 return;
4362 }
4363
4364 self.show_local_cursors = true;
4365 cx.notify();
4366
4367 let epoch = self.next_blink_epoch();
4368 cx.spawn(|this, mut cx| {
4369 let this = this.downgrade();
4370 async move {
4371 Timer::after(CURSOR_BLINK_INTERVAL).await;
4372 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4373 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4374 }
4375 }
4376 })
4377 .detach();
4378 }
4379
4380 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4381 if epoch == self.blink_epoch {
4382 self.blinking_paused = false;
4383 self.blink_cursors(epoch, cx);
4384 }
4385 }
4386
4387 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4388 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4389 self.show_local_cursors = !self.show_local_cursors;
4390 cx.notify();
4391
4392 let epoch = self.next_blink_epoch();
4393 cx.spawn(|this, mut cx| {
4394 let this = this.downgrade();
4395 async move {
4396 Timer::after(CURSOR_BLINK_INTERVAL).await;
4397 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4398 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4399 }
4400 }
4401 })
4402 .detach();
4403 }
4404 }
4405
4406 pub fn show_local_cursors(&self) -> bool {
4407 self.show_local_cursors
4408 }
4409
4410 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4411 self.refresh_active_diagnostics(cx);
4412 cx.notify();
4413 }
4414
4415 fn on_buffer_event(
4416 &mut self,
4417 _: ModelHandle<MultiBuffer>,
4418 event: &language::Event,
4419 cx: &mut ViewContext<Self>,
4420 ) {
4421 match event {
4422 language::Event::Edited => cx.emit(Event::Edited),
4423 language::Event::Dirtied => cx.emit(Event::Dirtied),
4424 language::Event::Saved => cx.emit(Event::Saved),
4425 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4426 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4427 language::Event::Closed => cx.emit(Event::Closed),
4428 _ => {}
4429 }
4430 }
4431
4432 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4433 cx.notify();
4434 }
4435}
4436
4437impl EditorSnapshot {
4438 pub fn is_focused(&self) -> bool {
4439 self.is_focused
4440 }
4441
4442 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4443 self.placeholder_text.as_ref()
4444 }
4445
4446 pub fn scroll_position(&self) -> Vector2F {
4447 compute_scroll_position(
4448 &self.display_snapshot,
4449 self.scroll_position,
4450 &self.scroll_top_anchor,
4451 )
4452 }
4453}
4454
4455impl Deref for EditorSnapshot {
4456 type Target = DisplaySnapshot;
4457
4458 fn deref(&self) -> &Self::Target {
4459 &self.display_snapshot
4460 }
4461}
4462
4463impl EditorSettings {
4464 #[cfg(any(test, feature = "test-support"))]
4465 pub fn test(cx: &AppContext) -> Self {
4466 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4467
4468 Self {
4469 tab_size: 4,
4470 soft_wrap: SoftWrap::None,
4471 style: {
4472 let font_cache: &gpui::FontCache = cx.font_cache();
4473 let font_family_name = Arc::from("Monaco");
4474 let font_properties = Default::default();
4475 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4476 let font_id = font_cache
4477 .select_font(font_family_id, &font_properties)
4478 .unwrap();
4479 let text = gpui::fonts::TextStyle {
4480 font_family_name,
4481 font_family_id,
4482 font_id,
4483 font_size: 14.,
4484 color: gpui::color::Color::from_u32(0xff0000ff),
4485 font_properties,
4486 underline: None,
4487 };
4488 let default_diagnostic_style = DiagnosticStyle {
4489 message: text.clone().into(),
4490 header: Default::default(),
4491 text_scale_factor: 1.,
4492 };
4493 EditorStyle {
4494 text: text.clone(),
4495 placeholder_text: None,
4496 background: Default::default(),
4497 gutter_background: Default::default(),
4498 gutter_padding_factor: 2.,
4499 active_line_background: Default::default(),
4500 highlighted_line_background: Default::default(),
4501 line_number: Default::default(),
4502 line_number_active: Default::default(),
4503 selection: Default::default(),
4504 guest_selections: Default::default(),
4505 syntax: Default::default(),
4506 diagnostic_path_header: DiagnosticPathHeader {
4507 container: Default::default(),
4508 filename: ContainedText {
4509 container: Default::default(),
4510 text: text.clone(),
4511 },
4512 path: ContainedText {
4513 container: Default::default(),
4514 text: text.clone(),
4515 },
4516 text_scale_factor: 1.,
4517 },
4518 diagnostic_header: DiagnosticHeader {
4519 container: Default::default(),
4520 message: ContainedLabel {
4521 container: Default::default(),
4522 label: text.clone().into(),
4523 },
4524 code: ContainedText {
4525 container: Default::default(),
4526 text: text.clone(),
4527 },
4528 icon_width_factor: 1.,
4529 text_scale_factor: 1.,
4530 },
4531 error_diagnostic: default_diagnostic_style.clone(),
4532 invalid_error_diagnostic: default_diagnostic_style.clone(),
4533 warning_diagnostic: default_diagnostic_style.clone(),
4534 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4535 information_diagnostic: default_diagnostic_style.clone(),
4536 invalid_information_diagnostic: default_diagnostic_style.clone(),
4537 hint_diagnostic: default_diagnostic_style.clone(),
4538 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4539 autocomplete: Default::default(),
4540 }
4541 },
4542 }
4543 }
4544}
4545
4546fn compute_scroll_position(
4547 snapshot: &DisplaySnapshot,
4548 mut scroll_position: Vector2F,
4549 scroll_top_anchor: &Option<Anchor>,
4550) -> Vector2F {
4551 if let Some(anchor) = scroll_top_anchor {
4552 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4553 scroll_position.set_y(scroll_top + scroll_position.y());
4554 } else {
4555 scroll_position.set_y(0.);
4556 }
4557 scroll_position
4558}
4559
4560#[derive(Copy, Clone)]
4561pub enum Event {
4562 Activate,
4563 Edited,
4564 Blurred,
4565 Dirtied,
4566 Saved,
4567 TitleChanged,
4568 SelectionsChanged,
4569 Closed,
4570}
4571
4572impl Entity for Editor {
4573 type Event = Event;
4574}
4575
4576impl View for Editor {
4577 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4578 let settings = (self.build_settings)(cx);
4579 self.display_map.update(cx, |map, cx| {
4580 map.set_font(
4581 settings.style.text.font_id,
4582 settings.style.text.font_size,
4583 cx,
4584 )
4585 });
4586 EditorElement::new(self.handle.clone(), settings).boxed()
4587 }
4588
4589 fn ui_name() -> &'static str {
4590 "Editor"
4591 }
4592
4593 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4594 self.focused = true;
4595 self.blink_cursors(self.blink_epoch, cx);
4596 self.buffer.update(cx, |buffer, cx| {
4597 buffer.avoid_grouping_next_transaction(cx);
4598 buffer.set_active_selections(&self.selections, cx)
4599 });
4600 }
4601
4602 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4603 self.focused = false;
4604 self.show_local_cursors = false;
4605 self.buffer
4606 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4607 self.hide_completions(cx);
4608 cx.emit(Event::Blurred);
4609 cx.notify();
4610 }
4611
4612 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4613 let mut cx = Self::default_keymap_context();
4614 let mode = match self.mode {
4615 EditorMode::SingleLine => "single_line",
4616 EditorMode::AutoHeight { .. } => "auto_height",
4617 EditorMode::Full => "full",
4618 };
4619 cx.map.insert("mode".into(), mode.into());
4620 if self.completion_state.is_some() {
4621 cx.set.insert("completing".into());
4622 }
4623 cx
4624 }
4625}
4626
4627impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4628 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4629 let start = self.start.to_point(buffer);
4630 let end = self.end.to_point(buffer);
4631 if self.reversed {
4632 end..start
4633 } else {
4634 start..end
4635 }
4636 }
4637
4638 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4639 let start = self.start.to_offset(buffer);
4640 let end = self.end.to_offset(buffer);
4641 if self.reversed {
4642 end..start
4643 } else {
4644 start..end
4645 }
4646 }
4647
4648 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4649 let start = self
4650 .start
4651 .to_point(&map.buffer_snapshot)
4652 .to_display_point(map);
4653 let end = self
4654 .end
4655 .to_point(&map.buffer_snapshot)
4656 .to_display_point(map);
4657 if self.reversed {
4658 end..start
4659 } else {
4660 start..end
4661 }
4662 }
4663
4664 fn spanned_rows(
4665 &self,
4666 include_end_if_at_line_start: bool,
4667 map: &DisplaySnapshot,
4668 ) -> Range<u32> {
4669 let start = self.start.to_point(&map.buffer_snapshot);
4670 let mut end = self.end.to_point(&map.buffer_snapshot);
4671 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4672 end.row -= 1;
4673 }
4674
4675 let buffer_start = map.prev_line_boundary(start).0;
4676 let buffer_end = map.next_line_boundary(end).0;
4677 buffer_start.row..buffer_end.row + 1
4678 }
4679}
4680
4681impl<T: InvalidationRegion> InvalidationStack<T> {
4682 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4683 where
4684 S: Clone + ToOffset,
4685 {
4686 while let Some(region) = self.last() {
4687 let all_selections_inside_invalidation_ranges =
4688 if selections.len() == region.ranges().len() {
4689 selections
4690 .iter()
4691 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4692 .all(|(selection, invalidation_range)| {
4693 let head = selection.head().to_offset(&buffer);
4694 invalidation_range.start <= head && invalidation_range.end >= head
4695 })
4696 } else {
4697 false
4698 };
4699
4700 if all_selections_inside_invalidation_ranges {
4701 break;
4702 } else {
4703 self.pop();
4704 }
4705 }
4706 }
4707}
4708
4709impl<T> Default for InvalidationStack<T> {
4710 fn default() -> Self {
4711 Self(Default::default())
4712 }
4713}
4714
4715impl<T> Deref for InvalidationStack<T> {
4716 type Target = Vec<T>;
4717
4718 fn deref(&self) -> &Self::Target {
4719 &self.0
4720 }
4721}
4722
4723impl<T> DerefMut for InvalidationStack<T> {
4724 fn deref_mut(&mut self) -> &mut Self::Target {
4725 &mut self.0
4726 }
4727}
4728
4729impl InvalidationRegion for BracketPairState {
4730 fn ranges(&self) -> &[Range<Anchor>] {
4731 &self.ranges
4732 }
4733}
4734
4735impl InvalidationRegion for SnippetState {
4736 fn ranges(&self) -> &[Range<Anchor>] {
4737 &self.ranges[self.active_index]
4738 }
4739}
4740
4741pub fn diagnostic_block_renderer(
4742 diagnostic: Diagnostic,
4743 is_valid: bool,
4744 build_settings: BuildSettings,
4745) -> RenderBlock {
4746 let mut highlighted_lines = Vec::new();
4747 for line in diagnostic.message.lines() {
4748 highlighted_lines.push(highlight_diagnostic_message(line));
4749 }
4750
4751 Arc::new(move |cx: &BlockContext| {
4752 let settings = build_settings(cx);
4753 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4754 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4755 Flex::column()
4756 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4757 Label::new(
4758 line.clone(),
4759 style.message.clone().with_font_size(font_size),
4760 )
4761 .with_highlights(highlights.clone())
4762 .contained()
4763 .with_margin_left(cx.anchor_x)
4764 .boxed()
4765 }))
4766 .aligned()
4767 .left()
4768 .boxed()
4769 })
4770}
4771
4772pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4773 let mut message_without_backticks = String::new();
4774 let mut prev_offset = 0;
4775 let mut inside_block = false;
4776 let mut highlights = Vec::new();
4777 for (match_ix, (offset, _)) in message
4778 .match_indices('`')
4779 .chain([(message.len(), "")])
4780 .enumerate()
4781 {
4782 message_without_backticks.push_str(&message[prev_offset..offset]);
4783 if inside_block {
4784 highlights.extend(prev_offset - match_ix..offset - match_ix);
4785 }
4786
4787 inside_block = !inside_block;
4788 prev_offset = offset + 1;
4789 }
4790
4791 (message_without_backticks, highlights)
4792}
4793
4794pub fn diagnostic_style(
4795 severity: DiagnosticSeverity,
4796 valid: bool,
4797 style: &EditorStyle,
4798) -> DiagnosticStyle {
4799 match (severity, valid) {
4800 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4801 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4802 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4803 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4804 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4805 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4806 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4807 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4808 _ => DiagnosticStyle {
4809 message: style.text.clone().into(),
4810 header: Default::default(),
4811 text_scale_factor: 1.,
4812 },
4813 }
4814}
4815
4816pub fn settings_builder(
4817 buffer: WeakModelHandle<MultiBuffer>,
4818 settings: watch::Receiver<workspace::Settings>,
4819) -> BuildSettings {
4820 Arc::new(move |cx| {
4821 let settings = settings.borrow();
4822 let font_cache = cx.font_cache();
4823 let font_family_id = settings.buffer_font_family;
4824 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4825 let font_properties = Default::default();
4826 let font_id = font_cache
4827 .select_font(font_family_id, &font_properties)
4828 .unwrap();
4829 let font_size = settings.buffer_font_size;
4830
4831 let mut theme = settings.theme.editor.clone();
4832 theme.text = TextStyle {
4833 color: theme.text.color,
4834 font_family_name,
4835 font_family_id,
4836 font_id,
4837 font_size,
4838 font_properties,
4839 underline: None,
4840 };
4841 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4842 let soft_wrap = match settings.soft_wrap(language) {
4843 workspace::settings::SoftWrap::None => SoftWrap::None,
4844 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4845 workspace::settings::SoftWrap::PreferredLineLength => {
4846 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4847 }
4848 };
4849
4850 EditorSettings {
4851 tab_size: settings.tab_size,
4852 soft_wrap,
4853 style: theme,
4854 }
4855 })
4856}
4857
4858pub fn combine_syntax_and_fuzzy_match_highlights(
4859 text: &str,
4860 default_style: HighlightStyle,
4861 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4862 match_indices: &[usize],
4863) -> Vec<(Range<usize>, HighlightStyle)> {
4864 let mut result = Vec::new();
4865 let mut match_indices = match_indices.iter().copied().peekable();
4866
4867 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4868 {
4869 syntax_highlight.font_properties.weight(Default::default());
4870
4871 // Add highlights for any fuzzy match characters before the next
4872 // syntax highlight range.
4873 while let Some(&match_index) = match_indices.peek() {
4874 if match_index >= range.start {
4875 break;
4876 }
4877 match_indices.next();
4878 let end_index = char_ix_after(match_index, text);
4879 let mut match_style = default_style;
4880 match_style.font_properties.weight(fonts::Weight::BOLD);
4881 result.push((match_index..end_index, match_style));
4882 }
4883
4884 if range.start == usize::MAX {
4885 break;
4886 }
4887
4888 // Add highlights for any fuzzy match characters within the
4889 // syntax highlight range.
4890 let mut offset = range.start;
4891 while let Some(&match_index) = match_indices.peek() {
4892 if match_index >= range.end {
4893 break;
4894 }
4895
4896 match_indices.next();
4897 if match_index > offset {
4898 result.push((offset..match_index, syntax_highlight));
4899 }
4900
4901 let mut end_index = char_ix_after(match_index, text);
4902 while let Some(&next_match_index) = match_indices.peek() {
4903 if next_match_index == end_index && next_match_index < range.end {
4904 end_index = char_ix_after(next_match_index, text);
4905 match_indices.next();
4906 } else {
4907 break;
4908 }
4909 }
4910
4911 let mut match_style = syntax_highlight;
4912 match_style.font_properties.weight(fonts::Weight::BOLD);
4913 result.push((match_index..end_index, match_style));
4914 offset = end_index;
4915 }
4916
4917 if offset < range.end {
4918 result.push((offset..range.end, syntax_highlight));
4919 }
4920 }
4921
4922 fn char_ix_after(ix: usize, text: &str) -> usize {
4923 ix + text[ix..].chars().next().unwrap().len_utf8()
4924 }
4925
4926 result
4927}
4928
4929fn styled_runs_for_completion_label<'a>(
4930 label: &'a CompletionLabel,
4931 default_color: Color,
4932 syntax_theme: &'a theme::SyntaxTheme,
4933) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
4934 const MUTED_OPACITY: usize = 165;
4935
4936 let mut muted_default_style = HighlightStyle {
4937 color: default_color,
4938 ..Default::default()
4939 };
4940 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
4941
4942 let mut prev_end = label.filter_range.end;
4943 label
4944 .runs
4945 .iter()
4946 .enumerate()
4947 .flat_map(move |(ix, (range, highlight_id))| {
4948 let style = if let Some(style) = highlight_id.style(syntax_theme) {
4949 style
4950 } else {
4951 return Default::default();
4952 };
4953 let mut muted_style = style.clone();
4954 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
4955
4956 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
4957 if range.start >= label.filter_range.end {
4958 if range.start > prev_end {
4959 runs.push((prev_end..range.start, muted_default_style));
4960 }
4961 runs.push((range.clone(), muted_style));
4962 } else if range.end <= label.filter_range.end {
4963 runs.push((range.clone(), style));
4964 } else {
4965 runs.push((range.start..label.filter_range.end, style));
4966 runs.push((label.filter_range.end..range.end, muted_style));
4967 }
4968 prev_end = cmp::max(prev_end, range.end);
4969
4970 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
4971 runs.push((prev_end..label.text.len(), muted_default_style));
4972 }
4973
4974 runs
4975 })
4976}
4977
4978#[cfg(test)]
4979mod tests {
4980 use super::*;
4981 use language::{FakeFile, LanguageConfig};
4982 use lsp::FakeLanguageServer;
4983 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4984 use text::Point;
4985 use unindent::Unindent;
4986 use util::test::sample_text;
4987
4988 #[gpui::test]
4989 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4990 let mut now = Instant::now();
4991 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4992 let group_interval = buffer.read(cx).transaction_group_interval();
4993 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4994 let settings = EditorSettings::test(cx);
4995 let (_, editor) = cx.add_window(Default::default(), |cx| {
4996 build_editor(buffer.clone(), settings, cx)
4997 });
4998
4999 editor.update(cx, |editor, cx| {
5000 editor.start_transaction_at(now, cx);
5001 editor.select_ranges([2..4], None, cx);
5002 editor.insert("cd", cx);
5003 editor.end_transaction_at(now, cx);
5004 assert_eq!(editor.text(cx), "12cd56");
5005 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5006
5007 editor.start_transaction_at(now, cx);
5008 editor.select_ranges([4..5], None, cx);
5009 editor.insert("e", cx);
5010 editor.end_transaction_at(now, cx);
5011 assert_eq!(editor.text(cx), "12cde6");
5012 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5013
5014 now += group_interval + Duration::from_millis(1);
5015 editor.select_ranges([2..2], None, cx);
5016
5017 // Simulate an edit in another editor
5018 buffer.update(cx, |buffer, cx| {
5019 buffer.start_transaction_at(now, cx);
5020 buffer.edit([0..1], "a", cx);
5021 buffer.edit([1..1], "b", cx);
5022 buffer.end_transaction_at(now, cx);
5023 });
5024
5025 assert_eq!(editor.text(cx), "ab2cde6");
5026 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5027
5028 // Last transaction happened past the group interval in a different editor.
5029 // Undo it individually and don't restore selections.
5030 editor.undo(&Undo, cx);
5031 assert_eq!(editor.text(cx), "12cde6");
5032 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5033
5034 // First two transactions happened within the group interval in this editor.
5035 // Undo them together and restore selections.
5036 editor.undo(&Undo, cx);
5037 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5038 assert_eq!(editor.text(cx), "123456");
5039 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5040
5041 // Redo the first two transactions together.
5042 editor.redo(&Redo, cx);
5043 assert_eq!(editor.text(cx), "12cde6");
5044 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5045
5046 // Redo the last transaction on its own.
5047 editor.redo(&Redo, cx);
5048 assert_eq!(editor.text(cx), "ab2cde6");
5049 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5050
5051 // Test empty transactions.
5052 editor.start_transaction_at(now, cx);
5053 editor.end_transaction_at(now, cx);
5054 editor.undo(&Undo, cx);
5055 assert_eq!(editor.text(cx), "12cde6");
5056 });
5057 }
5058
5059 #[gpui::test]
5060 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5061 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5062 let settings = EditorSettings::test(cx);
5063 let (_, editor) =
5064 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5065
5066 editor.update(cx, |view, cx| {
5067 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5068 });
5069
5070 assert_eq!(
5071 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5072 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5073 );
5074
5075 editor.update(cx, |view, cx| {
5076 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5077 });
5078
5079 assert_eq!(
5080 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5081 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5082 );
5083
5084 editor.update(cx, |view, cx| {
5085 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5086 });
5087
5088 assert_eq!(
5089 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5090 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5091 );
5092
5093 editor.update(cx, |view, cx| {
5094 view.end_selection(cx);
5095 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5096 });
5097
5098 assert_eq!(
5099 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5100 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5101 );
5102
5103 editor.update(cx, |view, cx| {
5104 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5105 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5106 });
5107
5108 assert_eq!(
5109 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5110 [
5111 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5112 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5113 ]
5114 );
5115
5116 editor.update(cx, |view, cx| {
5117 view.end_selection(cx);
5118 });
5119
5120 assert_eq!(
5121 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5122 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5123 );
5124 }
5125
5126 #[gpui::test]
5127 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5128 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5129 let settings = EditorSettings::test(cx);
5130 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5131
5132 view.update(cx, |view, cx| {
5133 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5134 assert_eq!(
5135 view.selected_display_ranges(cx),
5136 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5137 );
5138 });
5139
5140 view.update(cx, |view, cx| {
5141 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5142 assert_eq!(
5143 view.selected_display_ranges(cx),
5144 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5145 );
5146 });
5147
5148 view.update(cx, |view, cx| {
5149 view.cancel(&Cancel, cx);
5150 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5151 assert_eq!(
5152 view.selected_display_ranges(cx),
5153 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5154 );
5155 });
5156 }
5157
5158 #[gpui::test]
5159 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5160 cx.add_window(Default::default(), |cx| {
5161 use workspace::ItemView;
5162 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5163 let settings = EditorSettings::test(&cx);
5164 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5165 let mut editor = build_editor(buffer.clone(), settings, cx);
5166 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5167
5168 // Move the cursor a small distance.
5169 // Nothing is added to the navigation history.
5170 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5171 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5172 assert!(nav_history.borrow_mut().pop_backward().is_none());
5173
5174 // Move the cursor a large distance.
5175 // The history can jump back to the previous position.
5176 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5177 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5178 editor.navigate(nav_entry.data.unwrap(), cx);
5179 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5180 assert_eq!(
5181 editor.selected_display_ranges(cx),
5182 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5183 );
5184
5185 // Move the cursor a small distance via the mouse.
5186 // Nothing is added to the navigation history.
5187 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5188 editor.end_selection(cx);
5189 assert_eq!(
5190 editor.selected_display_ranges(cx),
5191 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5192 );
5193 assert!(nav_history.borrow_mut().pop_backward().is_none());
5194
5195 // Move the cursor a large distance via the mouse.
5196 // The history can jump back to the previous position.
5197 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5198 editor.end_selection(cx);
5199 assert_eq!(
5200 editor.selected_display_ranges(cx),
5201 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5202 );
5203 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5204 editor.navigate(nav_entry.data.unwrap(), cx);
5205 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5206 assert_eq!(
5207 editor.selected_display_ranges(cx),
5208 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5209 );
5210
5211 editor
5212 });
5213 }
5214
5215 #[gpui::test]
5216 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5217 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5218 let settings = EditorSettings::test(cx);
5219 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5220
5221 view.update(cx, |view, cx| {
5222 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5223 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5224 view.end_selection(cx);
5225
5226 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5227 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5228 view.end_selection(cx);
5229 assert_eq!(
5230 view.selected_display_ranges(cx),
5231 [
5232 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5233 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5234 ]
5235 );
5236 });
5237
5238 view.update(cx, |view, cx| {
5239 view.cancel(&Cancel, cx);
5240 assert_eq!(
5241 view.selected_display_ranges(cx),
5242 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5243 );
5244 });
5245
5246 view.update(cx, |view, cx| {
5247 view.cancel(&Cancel, cx);
5248 assert_eq!(
5249 view.selected_display_ranges(cx),
5250 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5251 );
5252 });
5253 }
5254
5255 #[gpui::test]
5256 fn test_fold(cx: &mut gpui::MutableAppContext) {
5257 let buffer = MultiBuffer::build_simple(
5258 &"
5259 impl Foo {
5260 // Hello!
5261
5262 fn a() {
5263 1
5264 }
5265
5266 fn b() {
5267 2
5268 }
5269
5270 fn c() {
5271 3
5272 }
5273 }
5274 "
5275 .unindent(),
5276 cx,
5277 );
5278 let settings = EditorSettings::test(&cx);
5279 let (_, view) = cx.add_window(Default::default(), |cx| {
5280 build_editor(buffer.clone(), settings, cx)
5281 });
5282
5283 view.update(cx, |view, cx| {
5284 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5285 view.fold(&Fold, cx);
5286 assert_eq!(
5287 view.display_text(cx),
5288 "
5289 impl Foo {
5290 // Hello!
5291
5292 fn a() {
5293 1
5294 }
5295
5296 fn b() {…
5297 }
5298
5299 fn c() {…
5300 }
5301 }
5302 "
5303 .unindent(),
5304 );
5305
5306 view.fold(&Fold, cx);
5307 assert_eq!(
5308 view.display_text(cx),
5309 "
5310 impl Foo {…
5311 }
5312 "
5313 .unindent(),
5314 );
5315
5316 view.unfold(&Unfold, cx);
5317 assert_eq!(
5318 view.display_text(cx),
5319 "
5320 impl Foo {
5321 // Hello!
5322
5323 fn a() {
5324 1
5325 }
5326
5327 fn b() {…
5328 }
5329
5330 fn c() {…
5331 }
5332 }
5333 "
5334 .unindent(),
5335 );
5336
5337 view.unfold(&Unfold, cx);
5338 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5339 });
5340 }
5341
5342 #[gpui::test]
5343 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5344 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5345 let settings = EditorSettings::test(&cx);
5346 let (_, view) = cx.add_window(Default::default(), |cx| {
5347 build_editor(buffer.clone(), settings, cx)
5348 });
5349
5350 buffer.update(cx, |buffer, cx| {
5351 buffer.edit(
5352 vec![
5353 Point::new(1, 0)..Point::new(1, 0),
5354 Point::new(1, 1)..Point::new(1, 1),
5355 ],
5356 "\t",
5357 cx,
5358 );
5359 });
5360
5361 view.update(cx, |view, cx| {
5362 assert_eq!(
5363 view.selected_display_ranges(cx),
5364 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5365 );
5366
5367 view.move_down(&MoveDown, cx);
5368 assert_eq!(
5369 view.selected_display_ranges(cx),
5370 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5371 );
5372
5373 view.move_right(&MoveRight, cx);
5374 assert_eq!(
5375 view.selected_display_ranges(cx),
5376 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5377 );
5378
5379 view.move_left(&MoveLeft, cx);
5380 assert_eq!(
5381 view.selected_display_ranges(cx),
5382 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5383 );
5384
5385 view.move_up(&MoveUp, cx);
5386 assert_eq!(
5387 view.selected_display_ranges(cx),
5388 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5389 );
5390
5391 view.move_to_end(&MoveToEnd, cx);
5392 assert_eq!(
5393 view.selected_display_ranges(cx),
5394 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5395 );
5396
5397 view.move_to_beginning(&MoveToBeginning, cx);
5398 assert_eq!(
5399 view.selected_display_ranges(cx),
5400 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5401 );
5402
5403 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5404 view.select_to_beginning(&SelectToBeginning, cx);
5405 assert_eq!(
5406 view.selected_display_ranges(cx),
5407 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5408 );
5409
5410 view.select_to_end(&SelectToEnd, cx);
5411 assert_eq!(
5412 view.selected_display_ranges(cx),
5413 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5414 );
5415 });
5416 }
5417
5418 #[gpui::test]
5419 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5420 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5421 let settings = EditorSettings::test(&cx);
5422 let (_, view) = cx.add_window(Default::default(), |cx| {
5423 build_editor(buffer.clone(), settings, cx)
5424 });
5425
5426 assert_eq!('ⓐ'.len_utf8(), 3);
5427 assert_eq!('α'.len_utf8(), 2);
5428
5429 view.update(cx, |view, cx| {
5430 view.fold_ranges(
5431 vec![
5432 Point::new(0, 6)..Point::new(0, 12),
5433 Point::new(1, 2)..Point::new(1, 4),
5434 Point::new(2, 4)..Point::new(2, 8),
5435 ],
5436 cx,
5437 );
5438 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5439
5440 view.move_right(&MoveRight, cx);
5441 assert_eq!(
5442 view.selected_display_ranges(cx),
5443 &[empty_range(0, "ⓐ".len())]
5444 );
5445 view.move_right(&MoveRight, cx);
5446 assert_eq!(
5447 view.selected_display_ranges(cx),
5448 &[empty_range(0, "ⓐⓑ".len())]
5449 );
5450 view.move_right(&MoveRight, cx);
5451 assert_eq!(
5452 view.selected_display_ranges(cx),
5453 &[empty_range(0, "ⓐⓑ…".len())]
5454 );
5455
5456 view.move_down(&MoveDown, cx);
5457 assert_eq!(
5458 view.selected_display_ranges(cx),
5459 &[empty_range(1, "ab…".len())]
5460 );
5461 view.move_left(&MoveLeft, cx);
5462 assert_eq!(
5463 view.selected_display_ranges(cx),
5464 &[empty_range(1, "ab".len())]
5465 );
5466 view.move_left(&MoveLeft, cx);
5467 assert_eq!(
5468 view.selected_display_ranges(cx),
5469 &[empty_range(1, "a".len())]
5470 );
5471
5472 view.move_down(&MoveDown, cx);
5473 assert_eq!(
5474 view.selected_display_ranges(cx),
5475 &[empty_range(2, "α".len())]
5476 );
5477 view.move_right(&MoveRight, cx);
5478 assert_eq!(
5479 view.selected_display_ranges(cx),
5480 &[empty_range(2, "αβ".len())]
5481 );
5482 view.move_right(&MoveRight, cx);
5483 assert_eq!(
5484 view.selected_display_ranges(cx),
5485 &[empty_range(2, "αβ…".len())]
5486 );
5487 view.move_right(&MoveRight, cx);
5488 assert_eq!(
5489 view.selected_display_ranges(cx),
5490 &[empty_range(2, "αβ…ε".len())]
5491 );
5492
5493 view.move_up(&MoveUp, cx);
5494 assert_eq!(
5495 view.selected_display_ranges(cx),
5496 &[empty_range(1, "ab…e".len())]
5497 );
5498 view.move_up(&MoveUp, cx);
5499 assert_eq!(
5500 view.selected_display_ranges(cx),
5501 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5502 );
5503 view.move_left(&MoveLeft, cx);
5504 assert_eq!(
5505 view.selected_display_ranges(cx),
5506 &[empty_range(0, "ⓐⓑ…".len())]
5507 );
5508 view.move_left(&MoveLeft, cx);
5509 assert_eq!(
5510 view.selected_display_ranges(cx),
5511 &[empty_range(0, "ⓐⓑ".len())]
5512 );
5513 view.move_left(&MoveLeft, cx);
5514 assert_eq!(
5515 view.selected_display_ranges(cx),
5516 &[empty_range(0, "ⓐ".len())]
5517 );
5518 });
5519 }
5520
5521 #[gpui::test]
5522 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5523 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5524 let settings = EditorSettings::test(&cx);
5525 let (_, view) = cx.add_window(Default::default(), |cx| {
5526 build_editor(buffer.clone(), settings, cx)
5527 });
5528 view.update(cx, |view, cx| {
5529 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5530 view.move_down(&MoveDown, cx);
5531 assert_eq!(
5532 view.selected_display_ranges(cx),
5533 &[empty_range(1, "abcd".len())]
5534 );
5535
5536 view.move_down(&MoveDown, cx);
5537 assert_eq!(
5538 view.selected_display_ranges(cx),
5539 &[empty_range(2, "αβγ".len())]
5540 );
5541
5542 view.move_down(&MoveDown, cx);
5543 assert_eq!(
5544 view.selected_display_ranges(cx),
5545 &[empty_range(3, "abcd".len())]
5546 );
5547
5548 view.move_down(&MoveDown, cx);
5549 assert_eq!(
5550 view.selected_display_ranges(cx),
5551 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5552 );
5553
5554 view.move_up(&MoveUp, cx);
5555 assert_eq!(
5556 view.selected_display_ranges(cx),
5557 &[empty_range(3, "abcd".len())]
5558 );
5559
5560 view.move_up(&MoveUp, cx);
5561 assert_eq!(
5562 view.selected_display_ranges(cx),
5563 &[empty_range(2, "αβγ".len())]
5564 );
5565 });
5566 }
5567
5568 #[gpui::test]
5569 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5570 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5571 let settings = EditorSettings::test(&cx);
5572 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5573 view.update(cx, |view, cx| {
5574 view.select_display_ranges(
5575 &[
5576 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5577 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5578 ],
5579 cx,
5580 );
5581 });
5582
5583 view.update(cx, |view, cx| {
5584 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5585 assert_eq!(
5586 view.selected_display_ranges(cx),
5587 &[
5588 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5589 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5590 ]
5591 );
5592 });
5593
5594 view.update(cx, |view, cx| {
5595 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5596 assert_eq!(
5597 view.selected_display_ranges(cx),
5598 &[
5599 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5600 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5601 ]
5602 );
5603 });
5604
5605 view.update(cx, |view, cx| {
5606 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5607 assert_eq!(
5608 view.selected_display_ranges(cx),
5609 &[
5610 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5611 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5612 ]
5613 );
5614 });
5615
5616 view.update(cx, |view, cx| {
5617 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5618 assert_eq!(
5619 view.selected_display_ranges(cx),
5620 &[
5621 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5622 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5623 ]
5624 );
5625 });
5626
5627 // Moving to the end of line again is a no-op.
5628 view.update(cx, |view, cx| {
5629 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5630 assert_eq!(
5631 view.selected_display_ranges(cx),
5632 &[
5633 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5634 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5635 ]
5636 );
5637 });
5638
5639 view.update(cx, |view, cx| {
5640 view.move_left(&MoveLeft, cx);
5641 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5642 assert_eq!(
5643 view.selected_display_ranges(cx),
5644 &[
5645 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5646 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5647 ]
5648 );
5649 });
5650
5651 view.update(cx, |view, cx| {
5652 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5653 assert_eq!(
5654 view.selected_display_ranges(cx),
5655 &[
5656 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5657 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5658 ]
5659 );
5660 });
5661
5662 view.update(cx, |view, cx| {
5663 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5664 assert_eq!(
5665 view.selected_display_ranges(cx),
5666 &[
5667 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5668 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5669 ]
5670 );
5671 });
5672
5673 view.update(cx, |view, cx| {
5674 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5675 assert_eq!(
5676 view.selected_display_ranges(cx),
5677 &[
5678 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5679 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5680 ]
5681 );
5682 });
5683
5684 view.update(cx, |view, cx| {
5685 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5686 assert_eq!(view.display_text(cx), "ab\n de");
5687 assert_eq!(
5688 view.selected_display_ranges(cx),
5689 &[
5690 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5691 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5692 ]
5693 );
5694 });
5695
5696 view.update(cx, |view, cx| {
5697 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5698 assert_eq!(view.display_text(cx), "\n");
5699 assert_eq!(
5700 view.selected_display_ranges(cx),
5701 &[
5702 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5703 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5704 ]
5705 );
5706 });
5707 }
5708
5709 #[gpui::test]
5710 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5711 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5712 let settings = EditorSettings::test(&cx);
5713 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5714 view.update(cx, |view, cx| {
5715 view.select_display_ranges(
5716 &[
5717 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5718 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5719 ],
5720 cx,
5721 );
5722 });
5723
5724 view.update(cx, |view, cx| {
5725 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5726 assert_eq!(
5727 view.selected_display_ranges(cx),
5728 &[
5729 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5730 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5731 ]
5732 );
5733 });
5734
5735 view.update(cx, |view, cx| {
5736 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5737 assert_eq!(
5738 view.selected_display_ranges(cx),
5739 &[
5740 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5741 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5742 ]
5743 );
5744 });
5745
5746 view.update(cx, |view, cx| {
5747 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5748 assert_eq!(
5749 view.selected_display_ranges(cx),
5750 &[
5751 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5752 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5753 ]
5754 );
5755 });
5756
5757 view.update(cx, |view, cx| {
5758 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5759 assert_eq!(
5760 view.selected_display_ranges(cx),
5761 &[
5762 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5763 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5764 ]
5765 );
5766 });
5767
5768 view.update(cx, |view, cx| {
5769 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5770 assert_eq!(
5771 view.selected_display_ranges(cx),
5772 &[
5773 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5774 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5775 ]
5776 );
5777 });
5778
5779 view.update(cx, |view, cx| {
5780 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5781 assert_eq!(
5782 view.selected_display_ranges(cx),
5783 &[
5784 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5785 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5786 ]
5787 );
5788 });
5789
5790 view.update(cx, |view, cx| {
5791 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5792 assert_eq!(
5793 view.selected_display_ranges(cx),
5794 &[
5795 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5796 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5797 ]
5798 );
5799 });
5800
5801 view.update(cx, |view, cx| {
5802 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5803 assert_eq!(
5804 view.selected_display_ranges(cx),
5805 &[
5806 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5807 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5808 ]
5809 );
5810 });
5811
5812 view.update(cx, |view, cx| {
5813 view.move_right(&MoveRight, cx);
5814 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5815 assert_eq!(
5816 view.selected_display_ranges(cx),
5817 &[
5818 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5819 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5820 ]
5821 );
5822 });
5823
5824 view.update(cx, |view, cx| {
5825 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5826 assert_eq!(
5827 view.selected_display_ranges(cx),
5828 &[
5829 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5830 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5831 ]
5832 );
5833 });
5834
5835 view.update(cx, |view, cx| {
5836 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5837 assert_eq!(
5838 view.selected_display_ranges(cx),
5839 &[
5840 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5841 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5842 ]
5843 );
5844 });
5845 }
5846
5847 #[gpui::test]
5848 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5849 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5850 let settings = EditorSettings::test(&cx);
5851 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5852
5853 view.update(cx, |view, cx| {
5854 view.set_wrap_width(Some(140.), cx);
5855 assert_eq!(
5856 view.display_text(cx),
5857 "use one::{\n two::three::\n four::five\n};"
5858 );
5859
5860 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5861
5862 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5863 assert_eq!(
5864 view.selected_display_ranges(cx),
5865 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5866 );
5867
5868 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5869 assert_eq!(
5870 view.selected_display_ranges(cx),
5871 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5872 );
5873
5874 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5875 assert_eq!(
5876 view.selected_display_ranges(cx),
5877 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5878 );
5879
5880 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5881 assert_eq!(
5882 view.selected_display_ranges(cx),
5883 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5884 );
5885
5886 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5887 assert_eq!(
5888 view.selected_display_ranges(cx),
5889 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5890 );
5891
5892 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5893 assert_eq!(
5894 view.selected_display_ranges(cx),
5895 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5896 );
5897 });
5898 }
5899
5900 #[gpui::test]
5901 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5902 let buffer = MultiBuffer::build_simple("one two three four", cx);
5903 let settings = EditorSettings::test(&cx);
5904 let (_, view) = cx.add_window(Default::default(), |cx| {
5905 build_editor(buffer.clone(), settings, cx)
5906 });
5907
5908 view.update(cx, |view, cx| {
5909 view.select_display_ranges(
5910 &[
5911 // an empty selection - the preceding word fragment is deleted
5912 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5913 // characters selected - they are deleted
5914 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5915 ],
5916 cx,
5917 );
5918 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5919 });
5920
5921 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5922
5923 view.update(cx, |view, cx| {
5924 view.select_display_ranges(
5925 &[
5926 // an empty selection - the following word fragment is deleted
5927 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5928 // characters selected - they are deleted
5929 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5930 ],
5931 cx,
5932 );
5933 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5934 });
5935
5936 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5937 }
5938
5939 #[gpui::test]
5940 fn test_newline(cx: &mut gpui::MutableAppContext) {
5941 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5942 let settings = EditorSettings::test(&cx);
5943 let (_, view) = cx.add_window(Default::default(), |cx| {
5944 build_editor(buffer.clone(), settings, cx)
5945 });
5946
5947 view.update(cx, |view, cx| {
5948 view.select_display_ranges(
5949 &[
5950 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5951 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5952 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5953 ],
5954 cx,
5955 );
5956
5957 view.newline(&Newline, cx);
5958 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5959 });
5960 }
5961
5962 #[gpui::test]
5963 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
5964 let buffer = MultiBuffer::build_simple(
5965 "
5966 a
5967 b(
5968 X
5969 )
5970 c(
5971 X
5972 )
5973 "
5974 .unindent()
5975 .as_str(),
5976 cx,
5977 );
5978
5979 let settings = EditorSettings::test(&cx);
5980 let (_, editor) = cx.add_window(Default::default(), |cx| {
5981 let mut editor = build_editor(buffer.clone(), settings, cx);
5982 editor.select_ranges(
5983 [
5984 Point::new(2, 4)..Point::new(2, 5),
5985 Point::new(5, 4)..Point::new(5, 5),
5986 ],
5987 None,
5988 cx,
5989 );
5990 editor
5991 });
5992
5993 // Edit the buffer directly, deleting ranges surrounding the editor's selections
5994 buffer.update(cx, |buffer, cx| {
5995 buffer.edit(
5996 [
5997 Point::new(1, 2)..Point::new(3, 0),
5998 Point::new(4, 2)..Point::new(6, 0),
5999 ],
6000 "",
6001 cx,
6002 );
6003 assert_eq!(
6004 buffer.read(cx).text(),
6005 "
6006 a
6007 b()
6008 c()
6009 "
6010 .unindent()
6011 );
6012 });
6013
6014 editor.update(cx, |editor, cx| {
6015 assert_eq!(
6016 editor.selected_ranges(cx),
6017 &[
6018 Point::new(1, 2)..Point::new(1, 2),
6019 Point::new(2, 2)..Point::new(2, 2),
6020 ],
6021 );
6022
6023 editor.newline(&Newline, cx);
6024 assert_eq!(
6025 editor.text(cx),
6026 "
6027 a
6028 b(
6029 )
6030 c(
6031 )
6032 "
6033 .unindent()
6034 );
6035
6036 // The selections are moved after the inserted newlines
6037 assert_eq!(
6038 editor.selected_ranges(cx),
6039 &[
6040 Point::new(2, 0)..Point::new(2, 0),
6041 Point::new(4, 0)..Point::new(4, 0),
6042 ],
6043 );
6044 });
6045 }
6046
6047 #[gpui::test]
6048 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6049 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6050
6051 let settings = EditorSettings::test(&cx);
6052 let (_, editor) = cx.add_window(Default::default(), |cx| {
6053 let mut editor = build_editor(buffer.clone(), settings, cx);
6054 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6055 editor
6056 });
6057
6058 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6059 buffer.update(cx, |buffer, cx| {
6060 buffer.edit([2..5, 10..13, 18..21], "", cx);
6061 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6062 });
6063
6064 editor.update(cx, |editor, cx| {
6065 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6066
6067 editor.insert("Z", cx);
6068 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6069
6070 // The selections are moved after the inserted characters
6071 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6072 });
6073 }
6074
6075 #[gpui::test]
6076 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6077 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6078 let settings = EditorSettings::test(&cx);
6079 let (_, view) = cx.add_window(Default::default(), |cx| {
6080 build_editor(buffer.clone(), settings, cx)
6081 });
6082
6083 view.update(cx, |view, cx| {
6084 // two selections on the same line
6085 view.select_display_ranges(
6086 &[
6087 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6088 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6089 ],
6090 cx,
6091 );
6092
6093 // indent from mid-tabstop to full tabstop
6094 view.tab(&Tab, cx);
6095 assert_eq!(view.text(cx), " one two\nthree\n four");
6096 assert_eq!(
6097 view.selected_display_ranges(cx),
6098 &[
6099 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6100 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6101 ]
6102 );
6103
6104 // outdent from 1 tabstop to 0 tabstops
6105 view.outdent(&Outdent, cx);
6106 assert_eq!(view.text(cx), "one two\nthree\n four");
6107 assert_eq!(
6108 view.selected_display_ranges(cx),
6109 &[
6110 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6111 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6112 ]
6113 );
6114
6115 // select across line ending
6116 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6117
6118 // indent and outdent affect only the preceding line
6119 view.tab(&Tab, cx);
6120 assert_eq!(view.text(cx), "one two\n three\n four");
6121 assert_eq!(
6122 view.selected_display_ranges(cx),
6123 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6124 );
6125 view.outdent(&Outdent, cx);
6126 assert_eq!(view.text(cx), "one two\nthree\n four");
6127 assert_eq!(
6128 view.selected_display_ranges(cx),
6129 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6130 );
6131
6132 // Ensure that indenting/outdenting works when the cursor is at column 0.
6133 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6134 view.tab(&Tab, cx);
6135 assert_eq!(view.text(cx), "one two\n three\n four");
6136 assert_eq!(
6137 view.selected_display_ranges(cx),
6138 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6139 );
6140
6141 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6142 view.outdent(&Outdent, cx);
6143 assert_eq!(view.text(cx), "one two\nthree\n four");
6144 assert_eq!(
6145 view.selected_display_ranges(cx),
6146 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6147 );
6148 });
6149 }
6150
6151 #[gpui::test]
6152 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6153 let buffer =
6154 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6155 let settings = EditorSettings::test(&cx);
6156 let (_, view) = cx.add_window(Default::default(), |cx| {
6157 build_editor(buffer.clone(), settings, cx)
6158 });
6159
6160 view.update(cx, |view, cx| {
6161 view.select_display_ranges(
6162 &[
6163 // an empty selection - the preceding character is deleted
6164 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6165 // one character selected - it is deleted
6166 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6167 // a line suffix selected - it is deleted
6168 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6169 ],
6170 cx,
6171 );
6172 view.backspace(&Backspace, cx);
6173 });
6174
6175 assert_eq!(
6176 buffer.read(cx).read(cx).text(),
6177 "oe two three\nfou five six\nseven ten\n"
6178 );
6179 }
6180
6181 #[gpui::test]
6182 fn test_delete(cx: &mut gpui::MutableAppContext) {
6183 let buffer =
6184 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6185 let settings = EditorSettings::test(&cx);
6186 let (_, view) = cx.add_window(Default::default(), |cx| {
6187 build_editor(buffer.clone(), settings, cx)
6188 });
6189
6190 view.update(cx, |view, cx| {
6191 view.select_display_ranges(
6192 &[
6193 // an empty selection - the following character is deleted
6194 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6195 // one character selected - it is deleted
6196 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6197 // a line suffix selected - it is deleted
6198 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6199 ],
6200 cx,
6201 );
6202 view.delete(&Delete, cx);
6203 });
6204
6205 assert_eq!(
6206 buffer.read(cx).read(cx).text(),
6207 "on two three\nfou five six\nseven ten\n"
6208 );
6209 }
6210
6211 #[gpui::test]
6212 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6213 let settings = EditorSettings::test(&cx);
6214 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6215 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6216 view.update(cx, |view, cx| {
6217 view.select_display_ranges(
6218 &[
6219 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6220 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6221 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6222 ],
6223 cx,
6224 );
6225 view.delete_line(&DeleteLine, cx);
6226 assert_eq!(view.display_text(cx), "ghi");
6227 assert_eq!(
6228 view.selected_display_ranges(cx),
6229 vec![
6230 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6231 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6232 ]
6233 );
6234 });
6235
6236 let settings = EditorSettings::test(&cx);
6237 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6238 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6239 view.update(cx, |view, cx| {
6240 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6241 view.delete_line(&DeleteLine, cx);
6242 assert_eq!(view.display_text(cx), "ghi\n");
6243 assert_eq!(
6244 view.selected_display_ranges(cx),
6245 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6246 );
6247 });
6248 }
6249
6250 #[gpui::test]
6251 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6252 let settings = EditorSettings::test(&cx);
6253 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6254 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6255 view.update(cx, |view, cx| {
6256 view.select_display_ranges(
6257 &[
6258 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6259 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6260 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6261 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6262 ],
6263 cx,
6264 );
6265 view.duplicate_line(&DuplicateLine, cx);
6266 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6267 assert_eq!(
6268 view.selected_display_ranges(cx),
6269 vec![
6270 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6271 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6272 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6273 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6274 ]
6275 );
6276 });
6277
6278 let settings = EditorSettings::test(&cx);
6279 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6280 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6281 view.update(cx, |view, cx| {
6282 view.select_display_ranges(
6283 &[
6284 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6285 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6286 ],
6287 cx,
6288 );
6289 view.duplicate_line(&DuplicateLine, cx);
6290 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6291 assert_eq!(
6292 view.selected_display_ranges(cx),
6293 vec![
6294 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6295 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6296 ]
6297 );
6298 });
6299 }
6300
6301 #[gpui::test]
6302 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6303 let settings = EditorSettings::test(&cx);
6304 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6305 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6306 view.update(cx, |view, cx| {
6307 view.fold_ranges(
6308 vec![
6309 Point::new(0, 2)..Point::new(1, 2),
6310 Point::new(2, 3)..Point::new(4, 1),
6311 Point::new(7, 0)..Point::new(8, 4),
6312 ],
6313 cx,
6314 );
6315 view.select_display_ranges(
6316 &[
6317 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6318 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6319 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6320 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6321 ],
6322 cx,
6323 );
6324 assert_eq!(
6325 view.display_text(cx),
6326 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6327 );
6328
6329 view.move_line_up(&MoveLineUp, cx);
6330 assert_eq!(
6331 view.display_text(cx),
6332 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6333 );
6334 assert_eq!(
6335 view.selected_display_ranges(cx),
6336 vec![
6337 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6338 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6339 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6340 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6341 ]
6342 );
6343 });
6344
6345 view.update(cx, |view, cx| {
6346 view.move_line_down(&MoveLineDown, cx);
6347 assert_eq!(
6348 view.display_text(cx),
6349 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6350 );
6351 assert_eq!(
6352 view.selected_display_ranges(cx),
6353 vec![
6354 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6355 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6356 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6357 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6358 ]
6359 );
6360 });
6361
6362 view.update(cx, |view, cx| {
6363 view.move_line_down(&MoveLineDown, cx);
6364 assert_eq!(
6365 view.display_text(cx),
6366 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6367 );
6368 assert_eq!(
6369 view.selected_display_ranges(cx),
6370 vec![
6371 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6372 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6373 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6374 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6375 ]
6376 );
6377 });
6378
6379 view.update(cx, |view, cx| {
6380 view.move_line_up(&MoveLineUp, cx);
6381 assert_eq!(
6382 view.display_text(cx),
6383 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6384 );
6385 assert_eq!(
6386 view.selected_display_ranges(cx),
6387 vec![
6388 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6389 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6390 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6391 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6392 ]
6393 );
6394 });
6395 }
6396
6397 #[gpui::test]
6398 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6399 let settings = EditorSettings::test(&cx);
6400 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6401 let snapshot = buffer.read(cx).snapshot(cx);
6402 let (_, editor) =
6403 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6404 editor.update(cx, |editor, cx| {
6405 editor.insert_blocks(
6406 [BlockProperties {
6407 position: snapshot.anchor_after(Point::new(2, 0)),
6408 disposition: BlockDisposition::Below,
6409 height: 1,
6410 render: Arc::new(|_| Empty::new().boxed()),
6411 }],
6412 cx,
6413 );
6414 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6415 editor.move_line_down(&MoveLineDown, cx);
6416 });
6417 }
6418
6419 #[gpui::test]
6420 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6421 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6422 let settings = EditorSettings::test(&cx);
6423 let view = cx
6424 .add_window(Default::default(), |cx| {
6425 build_editor(buffer.clone(), settings, cx)
6426 })
6427 .1;
6428
6429 // Cut with three selections. Clipboard text is divided into three slices.
6430 view.update(cx, |view, cx| {
6431 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6432 view.cut(&Cut, cx);
6433 assert_eq!(view.display_text(cx), "two four six ");
6434 });
6435
6436 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6437 view.update(cx, |view, cx| {
6438 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6439 view.paste(&Paste, cx);
6440 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6441 assert_eq!(
6442 view.selected_display_ranges(cx),
6443 &[
6444 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6445 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6446 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6447 ]
6448 );
6449 });
6450
6451 // Paste again but with only two cursors. Since the number of cursors doesn't
6452 // match the number of slices in the clipboard, the entire clipboard text
6453 // is pasted at each cursor.
6454 view.update(cx, |view, cx| {
6455 view.select_ranges(vec![0..0, 31..31], None, cx);
6456 view.handle_input(&Input("( ".into()), cx);
6457 view.paste(&Paste, cx);
6458 view.handle_input(&Input(") ".into()), cx);
6459 assert_eq!(
6460 view.display_text(cx),
6461 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6462 );
6463 });
6464
6465 view.update(cx, |view, cx| {
6466 view.select_ranges(vec![0..0], None, cx);
6467 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6468 assert_eq!(
6469 view.display_text(cx),
6470 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6471 );
6472 });
6473
6474 // Cut with three selections, one of which is full-line.
6475 view.update(cx, |view, cx| {
6476 view.select_display_ranges(
6477 &[
6478 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6479 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6480 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6481 ],
6482 cx,
6483 );
6484 view.cut(&Cut, cx);
6485 assert_eq!(
6486 view.display_text(cx),
6487 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6488 );
6489 });
6490
6491 // Paste with three selections, noticing how the copied selection that was full-line
6492 // gets inserted before the second cursor.
6493 view.update(cx, |view, cx| {
6494 view.select_display_ranges(
6495 &[
6496 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6497 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6498 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6499 ],
6500 cx,
6501 );
6502 view.paste(&Paste, cx);
6503 assert_eq!(
6504 view.display_text(cx),
6505 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6506 );
6507 assert_eq!(
6508 view.selected_display_ranges(cx),
6509 &[
6510 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6511 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6512 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6513 ]
6514 );
6515 });
6516
6517 // Copy with a single cursor only, which writes the whole line into the clipboard.
6518 view.update(cx, |view, cx| {
6519 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6520 view.copy(&Copy, cx);
6521 });
6522
6523 // Paste with three selections, noticing how the copied full-line selection is inserted
6524 // before the empty selections but replaces the selection that is non-empty.
6525 view.update(cx, |view, cx| {
6526 view.select_display_ranges(
6527 &[
6528 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6529 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6530 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6531 ],
6532 cx,
6533 );
6534 view.paste(&Paste, cx);
6535 assert_eq!(
6536 view.display_text(cx),
6537 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6538 );
6539 assert_eq!(
6540 view.selected_display_ranges(cx),
6541 &[
6542 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6543 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6544 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6545 ]
6546 );
6547 });
6548 }
6549
6550 #[gpui::test]
6551 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6552 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6553 let settings = EditorSettings::test(&cx);
6554 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6555 view.update(cx, |view, cx| {
6556 view.select_all(&SelectAll, cx);
6557 assert_eq!(
6558 view.selected_display_ranges(cx),
6559 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6560 );
6561 });
6562 }
6563
6564 #[gpui::test]
6565 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6566 let settings = EditorSettings::test(&cx);
6567 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6568 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6569 view.update(cx, |view, cx| {
6570 view.select_display_ranges(
6571 &[
6572 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6573 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6574 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6575 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6576 ],
6577 cx,
6578 );
6579 view.select_line(&SelectLine, cx);
6580 assert_eq!(
6581 view.selected_display_ranges(cx),
6582 vec![
6583 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6584 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6585 ]
6586 );
6587 });
6588
6589 view.update(cx, |view, cx| {
6590 view.select_line(&SelectLine, cx);
6591 assert_eq!(
6592 view.selected_display_ranges(cx),
6593 vec![
6594 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6595 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6596 ]
6597 );
6598 });
6599
6600 view.update(cx, |view, cx| {
6601 view.select_line(&SelectLine, cx);
6602 assert_eq!(
6603 view.selected_display_ranges(cx),
6604 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6605 );
6606 });
6607 }
6608
6609 #[gpui::test]
6610 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6611 let settings = EditorSettings::test(&cx);
6612 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6613 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6614 view.update(cx, |view, cx| {
6615 view.fold_ranges(
6616 vec![
6617 Point::new(0, 2)..Point::new(1, 2),
6618 Point::new(2, 3)..Point::new(4, 1),
6619 Point::new(7, 0)..Point::new(8, 4),
6620 ],
6621 cx,
6622 );
6623 view.select_display_ranges(
6624 &[
6625 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6626 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6627 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6628 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6629 ],
6630 cx,
6631 );
6632 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6633 });
6634
6635 view.update(cx, |view, cx| {
6636 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6637 assert_eq!(
6638 view.display_text(cx),
6639 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6640 );
6641 assert_eq!(
6642 view.selected_display_ranges(cx),
6643 [
6644 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6645 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6646 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6647 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6648 ]
6649 );
6650 });
6651
6652 view.update(cx, |view, cx| {
6653 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6654 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6655 assert_eq!(
6656 view.display_text(cx),
6657 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6658 );
6659 assert_eq!(
6660 view.selected_display_ranges(cx),
6661 [
6662 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6663 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6664 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6665 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6666 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6667 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6668 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6669 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6670 ]
6671 );
6672 });
6673 }
6674
6675 #[gpui::test]
6676 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6677 let settings = EditorSettings::test(&cx);
6678 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6679 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6680
6681 view.update(cx, |view, cx| {
6682 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6683 });
6684 view.update(cx, |view, cx| {
6685 view.add_selection_above(&AddSelectionAbove, cx);
6686 assert_eq!(
6687 view.selected_display_ranges(cx),
6688 vec![
6689 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6690 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6691 ]
6692 );
6693 });
6694
6695 view.update(cx, |view, cx| {
6696 view.add_selection_above(&AddSelectionAbove, cx);
6697 assert_eq!(
6698 view.selected_display_ranges(cx),
6699 vec![
6700 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6701 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6702 ]
6703 );
6704 });
6705
6706 view.update(cx, |view, cx| {
6707 view.add_selection_below(&AddSelectionBelow, cx);
6708 assert_eq!(
6709 view.selected_display_ranges(cx),
6710 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6711 );
6712 });
6713
6714 view.update(cx, |view, cx| {
6715 view.add_selection_below(&AddSelectionBelow, cx);
6716 assert_eq!(
6717 view.selected_display_ranges(cx),
6718 vec![
6719 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6720 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6721 ]
6722 );
6723 });
6724
6725 view.update(cx, |view, cx| {
6726 view.add_selection_below(&AddSelectionBelow, cx);
6727 assert_eq!(
6728 view.selected_display_ranges(cx),
6729 vec![
6730 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6731 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6732 ]
6733 );
6734 });
6735
6736 view.update(cx, |view, cx| {
6737 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6738 });
6739 view.update(cx, |view, cx| {
6740 view.add_selection_below(&AddSelectionBelow, cx);
6741 assert_eq!(
6742 view.selected_display_ranges(cx),
6743 vec![
6744 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6745 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6746 ]
6747 );
6748 });
6749
6750 view.update(cx, |view, cx| {
6751 view.add_selection_below(&AddSelectionBelow, cx);
6752 assert_eq!(
6753 view.selected_display_ranges(cx),
6754 vec![
6755 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6756 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6757 ]
6758 );
6759 });
6760
6761 view.update(cx, |view, cx| {
6762 view.add_selection_above(&AddSelectionAbove, cx);
6763 assert_eq!(
6764 view.selected_display_ranges(cx),
6765 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6766 );
6767 });
6768
6769 view.update(cx, |view, cx| {
6770 view.add_selection_above(&AddSelectionAbove, cx);
6771 assert_eq!(
6772 view.selected_display_ranges(cx),
6773 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6774 );
6775 });
6776
6777 view.update(cx, |view, cx| {
6778 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6779 view.add_selection_below(&AddSelectionBelow, cx);
6780 assert_eq!(
6781 view.selected_display_ranges(cx),
6782 vec![
6783 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6784 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6785 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6786 ]
6787 );
6788 });
6789
6790 view.update(cx, |view, cx| {
6791 view.add_selection_below(&AddSelectionBelow, cx);
6792 assert_eq!(
6793 view.selected_display_ranges(cx),
6794 vec![
6795 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6796 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6797 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6798 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6799 ]
6800 );
6801 });
6802
6803 view.update(cx, |view, cx| {
6804 view.add_selection_above(&AddSelectionAbove, cx);
6805 assert_eq!(
6806 view.selected_display_ranges(cx),
6807 vec![
6808 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6809 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6810 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6811 ]
6812 );
6813 });
6814
6815 view.update(cx, |view, cx| {
6816 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6817 });
6818 view.update(cx, |view, cx| {
6819 view.add_selection_above(&AddSelectionAbove, cx);
6820 assert_eq!(
6821 view.selected_display_ranges(cx),
6822 vec![
6823 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6824 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6825 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6826 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6827 ]
6828 );
6829 });
6830
6831 view.update(cx, |view, cx| {
6832 view.add_selection_below(&AddSelectionBelow, cx);
6833 assert_eq!(
6834 view.selected_display_ranges(cx),
6835 vec![
6836 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6837 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6838 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6839 ]
6840 );
6841 });
6842 }
6843
6844 #[gpui::test]
6845 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6846 let settings = cx.read(EditorSettings::test);
6847 let language = Arc::new(Language::new(
6848 LanguageConfig::default(),
6849 Some(tree_sitter_rust::language()),
6850 ));
6851
6852 let text = r#"
6853 use mod1::mod2::{mod3, mod4};
6854
6855 fn fn_1(param1: bool, param2: &str) {
6856 let var1 = "text";
6857 }
6858 "#
6859 .unindent();
6860
6861 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6862 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6863 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6864 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6865 .await;
6866
6867 view.update(&mut cx, |view, cx| {
6868 view.select_display_ranges(
6869 &[
6870 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6871 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6872 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6873 ],
6874 cx,
6875 );
6876 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6877 });
6878 assert_eq!(
6879 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6880 &[
6881 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6882 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6883 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6884 ]
6885 );
6886
6887 view.update(&mut cx, |view, cx| {
6888 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6889 });
6890 assert_eq!(
6891 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6892 &[
6893 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6894 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6895 ]
6896 );
6897
6898 view.update(&mut cx, |view, cx| {
6899 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6900 });
6901 assert_eq!(
6902 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6903 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6904 );
6905
6906 // Trying to expand the selected syntax node one more time has no effect.
6907 view.update(&mut cx, |view, cx| {
6908 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6909 });
6910 assert_eq!(
6911 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6912 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6913 );
6914
6915 view.update(&mut cx, |view, cx| {
6916 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6917 });
6918 assert_eq!(
6919 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6920 &[
6921 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6922 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6923 ]
6924 );
6925
6926 view.update(&mut cx, |view, cx| {
6927 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6928 });
6929 assert_eq!(
6930 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6931 &[
6932 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6933 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6934 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6935 ]
6936 );
6937
6938 view.update(&mut cx, |view, cx| {
6939 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6940 });
6941 assert_eq!(
6942 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6943 &[
6944 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6945 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6946 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6947 ]
6948 );
6949
6950 // Trying to shrink the selected syntax node one more time has no effect.
6951 view.update(&mut cx, |view, cx| {
6952 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6953 });
6954 assert_eq!(
6955 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6956 &[
6957 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6958 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6959 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6960 ]
6961 );
6962
6963 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6964 // a fold.
6965 view.update(&mut cx, |view, cx| {
6966 view.fold_ranges(
6967 vec![
6968 Point::new(0, 21)..Point::new(0, 24),
6969 Point::new(3, 20)..Point::new(3, 22),
6970 ],
6971 cx,
6972 );
6973 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6974 });
6975 assert_eq!(
6976 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6977 &[
6978 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6979 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6980 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6981 ]
6982 );
6983 }
6984
6985 #[gpui::test]
6986 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6987 let settings = cx.read(EditorSettings::test);
6988 let language = Arc::new(
6989 Language::new(
6990 LanguageConfig {
6991 brackets: vec![
6992 BracketPair {
6993 start: "{".to_string(),
6994 end: "}".to_string(),
6995 close: false,
6996 newline: true,
6997 },
6998 BracketPair {
6999 start: "(".to_string(),
7000 end: ")".to_string(),
7001 close: false,
7002 newline: true,
7003 },
7004 ],
7005 ..Default::default()
7006 },
7007 Some(tree_sitter_rust::language()),
7008 )
7009 .with_indents_query(
7010 r#"
7011 (_ "(" ")" @end) @indent
7012 (_ "{" "}" @end) @indent
7013 "#,
7014 )
7015 .unwrap(),
7016 );
7017
7018 let text = "fn a() {}";
7019
7020 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7021 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7022 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7023 editor
7024 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7025 .await;
7026
7027 editor.update(&mut cx, |editor, cx| {
7028 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7029 editor.newline(&Newline, cx);
7030 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7031 assert_eq!(
7032 editor.selected_ranges(cx),
7033 &[
7034 Point::new(1, 4)..Point::new(1, 4),
7035 Point::new(3, 4)..Point::new(3, 4),
7036 Point::new(5, 0)..Point::new(5, 0)
7037 ]
7038 );
7039 });
7040 }
7041
7042 #[gpui::test]
7043 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7044 let settings = cx.read(EditorSettings::test);
7045 let language = Arc::new(Language::new(
7046 LanguageConfig {
7047 brackets: vec![
7048 BracketPair {
7049 start: "{".to_string(),
7050 end: "}".to_string(),
7051 close: true,
7052 newline: true,
7053 },
7054 BracketPair {
7055 start: "/*".to_string(),
7056 end: " */".to_string(),
7057 close: true,
7058 newline: true,
7059 },
7060 ],
7061 ..Default::default()
7062 },
7063 Some(tree_sitter_rust::language()),
7064 ));
7065
7066 let text = r#"
7067 a
7068
7069 /
7070
7071 "#
7072 .unindent();
7073
7074 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7075 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7076 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7077 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7078 .await;
7079
7080 view.update(&mut cx, |view, cx| {
7081 view.select_display_ranges(
7082 &[
7083 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7084 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7085 ],
7086 cx,
7087 );
7088 view.handle_input(&Input("{".to_string()), cx);
7089 view.handle_input(&Input("{".to_string()), cx);
7090 view.handle_input(&Input("{".to_string()), cx);
7091 assert_eq!(
7092 view.text(cx),
7093 "
7094 {{{}}}
7095 {{{}}}
7096 /
7097
7098 "
7099 .unindent()
7100 );
7101
7102 view.move_right(&MoveRight, cx);
7103 view.handle_input(&Input("}".to_string()), cx);
7104 view.handle_input(&Input("}".to_string()), cx);
7105 view.handle_input(&Input("}".to_string()), cx);
7106 assert_eq!(
7107 view.text(cx),
7108 "
7109 {{{}}}}
7110 {{{}}}}
7111 /
7112
7113 "
7114 .unindent()
7115 );
7116
7117 view.undo(&Undo, cx);
7118 view.handle_input(&Input("/".to_string()), cx);
7119 view.handle_input(&Input("*".to_string()), cx);
7120 assert_eq!(
7121 view.text(cx),
7122 "
7123 /* */
7124 /* */
7125 /
7126
7127 "
7128 .unindent()
7129 );
7130
7131 view.undo(&Undo, cx);
7132 view.select_display_ranges(
7133 &[
7134 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7135 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7136 ],
7137 cx,
7138 );
7139 view.handle_input(&Input("*".to_string()), cx);
7140 assert_eq!(
7141 view.text(cx),
7142 "
7143 a
7144
7145 /*
7146 *
7147 "
7148 .unindent()
7149 );
7150 });
7151 }
7152
7153 #[gpui::test]
7154 async fn test_snippets(mut cx: gpui::TestAppContext) {
7155 let settings = cx.read(EditorSettings::test);
7156
7157 let text = "
7158 a. b
7159 a. b
7160 a. b
7161 "
7162 .unindent();
7163 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7164 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7165
7166 editor.update(&mut cx, |editor, cx| {
7167 let buffer = &editor.snapshot(cx).buffer_snapshot;
7168 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7169 let insertion_ranges = [
7170 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7171 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7172 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7173 ];
7174
7175 editor
7176 .insert_snippet(&insertion_ranges, snippet, cx)
7177 .unwrap();
7178 assert_eq!(
7179 editor.text(cx),
7180 "
7181 a.f(one, two, three) b
7182 a.f(one, two, three) b
7183 a.f(one, two, three) b
7184 "
7185 .unindent()
7186 );
7187 assert_eq!(
7188 editor.selected_ranges::<Point>(cx),
7189 &[
7190 Point::new(0, 4)..Point::new(0, 7),
7191 Point::new(0, 14)..Point::new(0, 19),
7192 Point::new(1, 4)..Point::new(1, 7),
7193 Point::new(1, 14)..Point::new(1, 19),
7194 Point::new(2, 4)..Point::new(2, 7),
7195 Point::new(2, 14)..Point::new(2, 19),
7196 ]
7197 );
7198
7199 // Can't move earlier than the first tab stop
7200 editor.move_to_prev_snippet_tabstop(cx);
7201 assert_eq!(
7202 editor.selected_ranges::<Point>(cx),
7203 &[
7204 Point::new(0, 4)..Point::new(0, 7),
7205 Point::new(0, 14)..Point::new(0, 19),
7206 Point::new(1, 4)..Point::new(1, 7),
7207 Point::new(1, 14)..Point::new(1, 19),
7208 Point::new(2, 4)..Point::new(2, 7),
7209 Point::new(2, 14)..Point::new(2, 19),
7210 ]
7211 );
7212
7213 assert!(editor.move_to_next_snippet_tabstop(cx));
7214 assert_eq!(
7215 editor.selected_ranges::<Point>(cx),
7216 &[
7217 Point::new(0, 9)..Point::new(0, 12),
7218 Point::new(1, 9)..Point::new(1, 12),
7219 Point::new(2, 9)..Point::new(2, 12)
7220 ]
7221 );
7222
7223 editor.move_to_prev_snippet_tabstop(cx);
7224 assert_eq!(
7225 editor.selected_ranges::<Point>(cx),
7226 &[
7227 Point::new(0, 4)..Point::new(0, 7),
7228 Point::new(0, 14)..Point::new(0, 19),
7229 Point::new(1, 4)..Point::new(1, 7),
7230 Point::new(1, 14)..Point::new(1, 19),
7231 Point::new(2, 4)..Point::new(2, 7),
7232 Point::new(2, 14)..Point::new(2, 19),
7233 ]
7234 );
7235
7236 assert!(editor.move_to_next_snippet_tabstop(cx));
7237 assert!(editor.move_to_next_snippet_tabstop(cx));
7238 assert_eq!(
7239 editor.selected_ranges::<Point>(cx),
7240 &[
7241 Point::new(0, 20)..Point::new(0, 20),
7242 Point::new(1, 20)..Point::new(1, 20),
7243 Point::new(2, 20)..Point::new(2, 20)
7244 ]
7245 );
7246
7247 // As soon as the last tab stop is reached, snippet state is gone
7248 editor.move_to_prev_snippet_tabstop(cx);
7249 assert_eq!(
7250 editor.selected_ranges::<Point>(cx),
7251 &[
7252 Point::new(0, 20)..Point::new(0, 20),
7253 Point::new(1, 20)..Point::new(1, 20),
7254 Point::new(2, 20)..Point::new(2, 20)
7255 ]
7256 );
7257 });
7258 }
7259
7260 #[gpui::test]
7261 async fn test_completion(mut cx: gpui::TestAppContext) {
7262 let settings = cx.read(EditorSettings::test);
7263 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7264 lsp::ServerCapabilities {
7265 completion_provider: Some(lsp::CompletionOptions {
7266 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7267 ..Default::default()
7268 }),
7269 ..Default::default()
7270 },
7271 cx.background(),
7272 )
7273 .await;
7274
7275 let text = "
7276 one
7277 two
7278 three
7279 "
7280 .unindent();
7281 let buffer = cx.add_model(|cx| {
7282 Buffer::from_file(
7283 0,
7284 text,
7285 Box::new(FakeFile {
7286 path: Arc::from(Path::new("/the/file")),
7287 }),
7288 cx,
7289 )
7290 .with_language_server(language_server, cx)
7291 });
7292 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7293 buffer.next_notification(&cx).await;
7294
7295 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7296
7297 editor.update(&mut cx, |editor, cx| {
7298 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7299 editor.handle_input(&Input(".".to_string()), cx);
7300 });
7301
7302 handle_completion_request(
7303 &mut fake,
7304 "/the/file",
7305 Point::new(0, 4),
7306 &[
7307 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7308 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7309 ],
7310 )
7311 .await;
7312 editor.next_notification(&cx).await;
7313
7314 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7315 editor.move_down(&MoveDown, cx);
7316 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7317 assert_eq!(
7318 editor.text(cx),
7319 "
7320 one.second_completion
7321 two
7322 three
7323 "
7324 .unindent()
7325 );
7326 apply_additional_edits
7327 });
7328
7329 handle_resolve_completion_request(
7330 &mut fake,
7331 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7332 )
7333 .await;
7334 apply_additional_edits.await.unwrap();
7335 assert_eq!(
7336 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7337 "
7338 one.second_completion
7339 two
7340 three
7341 additional edit
7342 "
7343 .unindent()
7344 );
7345
7346 editor.update(&mut cx, |editor, cx| {
7347 editor.select_ranges(
7348 [
7349 Point::new(1, 3)..Point::new(1, 3),
7350 Point::new(2, 5)..Point::new(2, 5),
7351 ],
7352 None,
7353 cx,
7354 );
7355
7356 editor.handle_input(&Input(" ".to_string()), cx);
7357 assert!(editor.completion_state.is_none());
7358 editor.handle_input(&Input("s".to_string()), cx);
7359 assert!(editor.completion_state.is_none());
7360 });
7361
7362 handle_completion_request(
7363 &mut fake,
7364 "/the/file",
7365 Point::new(2, 7),
7366 &[
7367 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7368 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7369 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7370 ],
7371 )
7372 .await;
7373 editor
7374 .condition(&cx, |editor, _| editor.completion_state.is_some())
7375 .await;
7376
7377 editor.update(&mut cx, |editor, cx| {
7378 editor.handle_input(&Input("i".to_string()), cx);
7379 });
7380
7381 handle_completion_request(
7382 &mut fake,
7383 "/the/file",
7384 Point::new(2, 8),
7385 &[
7386 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7387 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7388 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7389 ],
7390 )
7391 .await;
7392 editor.next_notification(&cx).await;
7393
7394 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7395 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7396 assert_eq!(
7397 editor.text(cx),
7398 "
7399 one.second_completion
7400 two sixth_completion
7401 three sixth_completion
7402 additional edit
7403 "
7404 .unindent()
7405 );
7406 apply_additional_edits
7407 });
7408 handle_resolve_completion_request(&mut fake, None).await;
7409 apply_additional_edits.await.unwrap();
7410
7411 async fn handle_completion_request(
7412 fake: &mut FakeLanguageServer,
7413 path: &str,
7414 position: Point,
7415 completions: &[(Range<Point>, &str)],
7416 ) {
7417 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7418 assert_eq!(
7419 params.text_document_position.text_document.uri,
7420 lsp::Url::from_file_path(path).unwrap()
7421 );
7422 assert_eq!(
7423 params.text_document_position.position,
7424 lsp::Position::new(position.row, position.column)
7425 );
7426
7427 let completions = completions
7428 .iter()
7429 .map(|(range, new_text)| lsp::CompletionItem {
7430 label: new_text.to_string(),
7431 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7432 range: lsp::Range::new(
7433 lsp::Position::new(range.start.row, range.start.column),
7434 lsp::Position::new(range.start.row, range.start.column),
7435 ),
7436 new_text: new_text.to_string(),
7437 })),
7438 ..Default::default()
7439 })
7440 .collect();
7441 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7442 .await;
7443 }
7444
7445 async fn handle_resolve_completion_request(
7446 fake: &mut FakeLanguageServer,
7447 edit: Option<(Range<Point>, &str)>,
7448 ) {
7449 let (id, _) = fake
7450 .receive_request::<lsp::request::ResolveCompletionItem>()
7451 .await;
7452 fake.respond(
7453 id,
7454 lsp::CompletionItem {
7455 additional_text_edits: edit.map(|(range, new_text)| {
7456 vec![lsp::TextEdit::new(
7457 lsp::Range::new(
7458 lsp::Position::new(range.start.row, range.start.column),
7459 lsp::Position::new(range.end.row, range.end.column),
7460 ),
7461 new_text.to_string(),
7462 )]
7463 }),
7464 ..Default::default()
7465 },
7466 )
7467 .await;
7468 }
7469 }
7470
7471 #[gpui::test]
7472 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7473 let settings = cx.read(EditorSettings::test);
7474 let language = Arc::new(Language::new(
7475 LanguageConfig {
7476 line_comment: Some("// ".to_string()),
7477 ..Default::default()
7478 },
7479 Some(tree_sitter_rust::language()),
7480 ));
7481
7482 let text = "
7483 fn a() {
7484 //b();
7485 // c();
7486 // d();
7487 }
7488 "
7489 .unindent();
7490
7491 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7492 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7493 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7494
7495 view.update(&mut cx, |editor, cx| {
7496 // If multiple selections intersect a line, the line is only
7497 // toggled once.
7498 editor.select_display_ranges(
7499 &[
7500 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7501 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7502 ],
7503 cx,
7504 );
7505 editor.toggle_comments(&ToggleComments, cx);
7506 assert_eq!(
7507 editor.text(cx),
7508 "
7509 fn a() {
7510 b();
7511 c();
7512 d();
7513 }
7514 "
7515 .unindent()
7516 );
7517
7518 // The comment prefix is inserted at the same column for every line
7519 // in a selection.
7520 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7521 editor.toggle_comments(&ToggleComments, cx);
7522 assert_eq!(
7523 editor.text(cx),
7524 "
7525 fn a() {
7526 // b();
7527 // c();
7528 // d();
7529 }
7530 "
7531 .unindent()
7532 );
7533
7534 // If a selection ends at the beginning of a line, that line is not toggled.
7535 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7536 editor.toggle_comments(&ToggleComments, cx);
7537 assert_eq!(
7538 editor.text(cx),
7539 "
7540 fn a() {
7541 // b();
7542 c();
7543 // d();
7544 }
7545 "
7546 .unindent()
7547 );
7548 });
7549 }
7550
7551 #[gpui::test]
7552 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7553 let settings = EditorSettings::test(cx);
7554 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7555 let multibuffer = cx.add_model(|cx| {
7556 let mut multibuffer = MultiBuffer::new(0);
7557 multibuffer.push_excerpt(
7558 ExcerptProperties {
7559 buffer: &buffer,
7560 range: Point::new(0, 0)..Point::new(0, 4),
7561 },
7562 cx,
7563 );
7564 multibuffer.push_excerpt(
7565 ExcerptProperties {
7566 buffer: &buffer,
7567 range: Point::new(1, 0)..Point::new(1, 4),
7568 },
7569 cx,
7570 );
7571 multibuffer
7572 });
7573
7574 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7575
7576 let (_, view) = cx.add_window(Default::default(), |cx| {
7577 build_editor(multibuffer, settings, cx)
7578 });
7579 view.update(cx, |view, cx| {
7580 view.select_display_ranges(
7581 &[
7582 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7583 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7584 ],
7585 cx,
7586 );
7587
7588 view.handle_input(&Input("X".to_string()), cx);
7589 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7590 assert_eq!(
7591 view.selected_display_ranges(cx),
7592 &[
7593 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7594 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7595 ]
7596 )
7597 });
7598 }
7599
7600 #[gpui::test]
7601 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7602 let settings = EditorSettings::test(cx);
7603 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7604 let multibuffer = cx.add_model(|cx| {
7605 let mut multibuffer = MultiBuffer::new(0);
7606 multibuffer.push_excerpt(
7607 ExcerptProperties {
7608 buffer: &buffer,
7609 range: Point::new(0, 0)..Point::new(1, 4),
7610 },
7611 cx,
7612 );
7613 multibuffer.push_excerpt(
7614 ExcerptProperties {
7615 buffer: &buffer,
7616 range: Point::new(1, 0)..Point::new(2, 4),
7617 },
7618 cx,
7619 );
7620 multibuffer
7621 });
7622
7623 assert_eq!(
7624 multibuffer.read(cx).read(cx).text(),
7625 "aaaa\nbbbb\nbbbb\ncccc"
7626 );
7627
7628 let (_, view) = cx.add_window(Default::default(), |cx| {
7629 build_editor(multibuffer, settings, cx)
7630 });
7631 view.update(cx, |view, cx| {
7632 view.select_display_ranges(
7633 &[
7634 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7635 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7636 ],
7637 cx,
7638 );
7639
7640 view.handle_input(&Input("X".to_string()), cx);
7641 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7642 assert_eq!(
7643 view.selected_display_ranges(cx),
7644 &[
7645 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7646 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7647 ]
7648 );
7649
7650 view.newline(&Newline, cx);
7651 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7652 assert_eq!(
7653 view.selected_display_ranges(cx),
7654 &[
7655 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7656 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7657 ]
7658 );
7659 });
7660 }
7661
7662 #[gpui::test]
7663 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7664 let settings = EditorSettings::test(cx);
7665 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7666 let mut excerpt1_id = None;
7667 let multibuffer = cx.add_model(|cx| {
7668 let mut multibuffer = MultiBuffer::new(0);
7669 excerpt1_id = Some(multibuffer.push_excerpt(
7670 ExcerptProperties {
7671 buffer: &buffer,
7672 range: Point::new(0, 0)..Point::new(1, 4),
7673 },
7674 cx,
7675 ));
7676 multibuffer.push_excerpt(
7677 ExcerptProperties {
7678 buffer: &buffer,
7679 range: Point::new(1, 0)..Point::new(2, 4),
7680 },
7681 cx,
7682 );
7683 multibuffer
7684 });
7685 assert_eq!(
7686 multibuffer.read(cx).read(cx).text(),
7687 "aaaa\nbbbb\nbbbb\ncccc"
7688 );
7689 let (_, editor) = cx.add_window(Default::default(), |cx| {
7690 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7691 editor.select_display_ranges(
7692 &[
7693 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7694 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7695 ],
7696 cx,
7697 );
7698 editor
7699 });
7700
7701 // Refreshing selections is a no-op when excerpts haven't changed.
7702 editor.update(cx, |editor, cx| {
7703 editor.refresh_selections(cx);
7704 assert_eq!(
7705 editor.selected_display_ranges(cx),
7706 [
7707 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7708 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7709 ]
7710 );
7711 });
7712
7713 multibuffer.update(cx, |multibuffer, cx| {
7714 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7715 });
7716 editor.update(cx, |editor, cx| {
7717 // Removing an excerpt causes the first selection to become degenerate.
7718 assert_eq!(
7719 editor.selected_display_ranges(cx),
7720 [
7721 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7722 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7723 ]
7724 );
7725
7726 // Refreshing selections will relocate the first selection to the original buffer
7727 // location.
7728 editor.refresh_selections(cx);
7729 assert_eq!(
7730 editor.selected_display_ranges(cx),
7731 [
7732 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7733 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7734 ]
7735 );
7736 });
7737 }
7738
7739 #[gpui::test]
7740 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7741 let settings = cx.read(EditorSettings::test);
7742 let language = Arc::new(Language::new(
7743 LanguageConfig {
7744 brackets: vec![
7745 BracketPair {
7746 start: "{".to_string(),
7747 end: "}".to_string(),
7748 close: true,
7749 newline: true,
7750 },
7751 BracketPair {
7752 start: "/* ".to_string(),
7753 end: " */".to_string(),
7754 close: true,
7755 newline: true,
7756 },
7757 ],
7758 ..Default::default()
7759 },
7760 Some(tree_sitter_rust::language()),
7761 ));
7762
7763 let text = concat!(
7764 "{ }\n", // Suppress rustfmt
7765 " x\n", //
7766 " /* */\n", //
7767 "x\n", //
7768 "{{} }\n", //
7769 );
7770
7771 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7772 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7773 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7774 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7775 .await;
7776
7777 view.update(&mut cx, |view, cx| {
7778 view.select_display_ranges(
7779 &[
7780 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7781 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7782 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7783 ],
7784 cx,
7785 );
7786 view.newline(&Newline, cx);
7787
7788 assert_eq!(
7789 view.buffer().read(cx).read(cx).text(),
7790 concat!(
7791 "{ \n", // Suppress rustfmt
7792 "\n", //
7793 "}\n", //
7794 " x\n", //
7795 " /* \n", //
7796 " \n", //
7797 " */\n", //
7798 "x\n", //
7799 "{{} \n", //
7800 "}\n", //
7801 )
7802 );
7803 });
7804 }
7805
7806 #[gpui::test]
7807 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7808 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7809 let settings = EditorSettings::test(&cx);
7810 let (_, editor) = cx.add_window(Default::default(), |cx| {
7811 build_editor(buffer.clone(), settings, cx)
7812 });
7813
7814 editor.update(cx, |editor, cx| {
7815 struct Type1;
7816 struct Type2;
7817
7818 let buffer = buffer.read(cx).snapshot(cx);
7819
7820 let anchor_range = |range: Range<Point>| {
7821 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7822 };
7823
7824 editor.highlight_ranges::<Type1>(
7825 vec![
7826 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7827 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7828 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7829 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7830 ],
7831 Color::red(),
7832 cx,
7833 );
7834 editor.highlight_ranges::<Type2>(
7835 vec![
7836 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7837 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7838 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7839 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7840 ],
7841 Color::green(),
7842 cx,
7843 );
7844
7845 let snapshot = editor.snapshot(cx);
7846 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7847 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7848 &snapshot,
7849 );
7850 // Enforce a consistent ordering based on color without relying on the ordering of the
7851 // highlight's `TypeId` which is non-deterministic.
7852 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7853 assert_eq!(
7854 highlighted_ranges,
7855 &[
7856 (
7857 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7858 Color::green(),
7859 ),
7860 (
7861 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7862 Color::green(),
7863 ),
7864 (
7865 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7866 Color::red(),
7867 ),
7868 (
7869 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7870 Color::red(),
7871 ),
7872 ]
7873 );
7874 assert_eq!(
7875 editor.highlighted_ranges_in_range(
7876 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7877 &snapshot,
7878 ),
7879 &[(
7880 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7881 Color::red(),
7882 )]
7883 );
7884 });
7885 }
7886
7887 #[test]
7888 fn test_combine_syntax_and_fuzzy_match_highlights() {
7889 let string = "abcdefghijklmnop";
7890 let default = HighlightStyle::default();
7891 let syntax_ranges = [
7892 (
7893 0..3,
7894 HighlightStyle {
7895 color: Color::red(),
7896 ..default
7897 },
7898 ),
7899 (
7900 4..8,
7901 HighlightStyle {
7902 color: Color::green(),
7903 ..default
7904 },
7905 ),
7906 ];
7907 let match_indices = [4, 6, 7, 8];
7908 assert_eq!(
7909 combine_syntax_and_fuzzy_match_highlights(
7910 &string,
7911 default,
7912 syntax_ranges.into_iter(),
7913 &match_indices,
7914 ),
7915 &[
7916 (
7917 0..3,
7918 HighlightStyle {
7919 color: Color::red(),
7920 ..default
7921 },
7922 ),
7923 (
7924 4..5,
7925 HighlightStyle {
7926 color: Color::green(),
7927 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7928 ..default
7929 },
7930 ),
7931 (
7932 5..6,
7933 HighlightStyle {
7934 color: Color::green(),
7935 ..default
7936 },
7937 ),
7938 (
7939 6..8,
7940 HighlightStyle {
7941 color: Color::green(),
7942 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7943 ..default
7944 },
7945 ),
7946 (
7947 8..9,
7948 HighlightStyle {
7949 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7950 ..default
7951 },
7952 ),
7953 ]
7954 );
7955 }
7956
7957 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7958 let point = DisplayPoint::new(row as u32, column as u32);
7959 point..point
7960 }
7961
7962 fn build_editor(
7963 buffer: ModelHandle<MultiBuffer>,
7964 settings: EditorSettings,
7965 cx: &mut ViewContext<Editor>,
7966 ) -> Editor {
7967 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7968 }
7969}
7970
7971trait RangeExt<T> {
7972 fn sorted(&self) -> Range<T>;
7973 fn to_inclusive(&self) -> RangeInclusive<T>;
7974}
7975
7976impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7977 fn sorted(&self) -> Self {
7978 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7979 }
7980
7981 fn to_inclusive(&self) -> RangeInclusive<T> {
7982 self.start.clone()..=self.end.clone()
7983 }
7984}