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 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
27 MutableAppContext, RenderContext, Task, View, ViewContext, WeakModelHandle, WeakViewHandle,
28};
29use items::BufferItemHandle;
30use itertools::Itertools as _;
31use language::{
32 AnchorRangeExt as _, BracketPair, Buffer, Completion, Diagnostic, DiagnosticSeverity, Language,
33 Point, Selection, SelectionGoal, TransactionId,
34};
35use multi_buffer::MultiBufferChunks;
36pub use multi_buffer::{
37 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, ExcerptProperties, MultiBuffer,
38 MultiBufferSnapshot, ToOffset, ToPoint,
39};
40use ordered_float::OrderedFloat;
41use postage::watch;
42use serde::{Deserialize, Serialize};
43use smallvec::SmallVec;
44use smol::Timer;
45use snippet::Snippet;
46use std::{
47 any::TypeId,
48 cmp::{self, Ordering, Reverse},
49 iter::{self, FromIterator},
50 mem,
51 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
52 sync::Arc,
53 time::{Duration, Instant},
54};
55pub use sum_tree::Bias;
56use text::rope::TextDimension;
57use theme::{DiagnosticStyle, EditorStyle};
58use util::{post_inc, ResultExt, TryFutureExt};
59use workspace::{ItemNavHistory, PathOpener, Workspace};
60
61const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
62const MAX_LINE_LEN: usize = 1024;
63const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
64
65action!(Cancel);
66action!(Backspace);
67action!(Delete);
68action!(Input, String);
69action!(Newline);
70action!(Tab);
71action!(Outdent);
72action!(DeleteLine);
73action!(DeleteToPreviousWordBoundary);
74action!(DeleteToNextWordBoundary);
75action!(DeleteToBeginningOfLine);
76action!(DeleteToEndOfLine);
77action!(CutToEndOfLine);
78action!(DuplicateLine);
79action!(MoveLineUp);
80action!(MoveLineDown);
81action!(Cut);
82action!(Copy);
83action!(Paste);
84action!(Undo);
85action!(Redo);
86action!(MoveUp);
87action!(MoveDown);
88action!(MoveLeft);
89action!(MoveRight);
90action!(MoveToPreviousWordBoundary);
91action!(MoveToNextWordBoundary);
92action!(MoveToBeginningOfLine);
93action!(MoveToEndOfLine);
94action!(MoveToBeginning);
95action!(MoveToEnd);
96action!(SelectUp);
97action!(SelectDown);
98action!(SelectLeft);
99action!(SelectRight);
100action!(SelectToPreviousWordBoundary);
101action!(SelectToNextWordBoundary);
102action!(SelectToBeginningOfLine, bool);
103action!(SelectToEndOfLine);
104action!(SelectToBeginning);
105action!(SelectToEnd);
106action!(SelectAll);
107action!(SelectLine);
108action!(SplitSelectionIntoLines);
109action!(AddSelectionAbove);
110action!(AddSelectionBelow);
111action!(SelectNext, bool);
112action!(ToggleComments);
113action!(SelectLargerSyntaxNode);
114action!(SelectSmallerSyntaxNode);
115action!(MoveToEnclosingBracket);
116action!(ShowNextDiagnostic);
117action!(GoToDefinition);
118action!(PageUp);
119action!(PageDown);
120action!(Fold);
121action!(Unfold);
122action!(FoldSelectedRanges);
123action!(Scroll, Vector2F);
124action!(Select, SelectPhase);
125action!(ShowCompletions);
126action!(ConfirmCompletion);
127
128pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
129 path_openers.push(Box::new(items::BufferOpener));
130 cx.add_bindings(vec![
131 Binding::new("escape", Cancel, Some("Editor")),
132 Binding::new("backspace", Backspace, Some("Editor")),
133 Binding::new("ctrl-h", Backspace, Some("Editor")),
134 Binding::new("delete", Delete, Some("Editor")),
135 Binding::new("ctrl-d", Delete, Some("Editor")),
136 Binding::new("enter", Newline, Some("Editor && mode == full")),
137 Binding::new(
138 "alt-enter",
139 Input("\n".into()),
140 Some("Editor && mode == auto_height"),
141 ),
142 Binding::new("enter", ConfirmCompletion, Some("Editor && completing")),
143 Binding::new("tab", Tab, Some("Editor")),
144 Binding::new("shift-tab", Outdent, Some("Editor")),
145 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
146 Binding::new(
147 "alt-backspace",
148 DeleteToPreviousWordBoundary,
149 Some("Editor"),
150 ),
151 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
152 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
153 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
154 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
155 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
156 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
157 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
158 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
159 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
160 Binding::new("cmd-x", Cut, Some("Editor")),
161 Binding::new("cmd-c", Copy, Some("Editor")),
162 Binding::new("cmd-v", Paste, Some("Editor")),
163 Binding::new("cmd-z", Undo, Some("Editor")),
164 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
165 Binding::new("up", MoveUp, Some("Editor")),
166 Binding::new("down", MoveDown, Some("Editor")),
167 Binding::new("left", MoveLeft, Some("Editor")),
168 Binding::new("right", MoveRight, Some("Editor")),
169 Binding::new("ctrl-p", MoveUp, Some("Editor")),
170 Binding::new("ctrl-n", MoveDown, Some("Editor")),
171 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
172 Binding::new("ctrl-f", MoveRight, Some("Editor")),
173 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
174 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
175 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
176 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
177 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
178 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
179 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
180 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
181 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
182 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
183 Binding::new("shift-up", SelectUp, Some("Editor")),
184 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
185 Binding::new("shift-down", SelectDown, Some("Editor")),
186 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
187 Binding::new("shift-left", SelectLeft, Some("Editor")),
188 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
189 Binding::new("shift-right", SelectRight, Some("Editor")),
190 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
191 Binding::new(
192 "alt-shift-left",
193 SelectToPreviousWordBoundary,
194 Some("Editor"),
195 ),
196 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
197 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
198 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
199 Binding::new(
200 "cmd-shift-left",
201 SelectToBeginningOfLine(true),
202 Some("Editor"),
203 ),
204 Binding::new(
205 "ctrl-shift-A",
206 SelectToBeginningOfLine(true),
207 Some("Editor"),
208 ),
209 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
211 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
212 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
213 Binding::new("cmd-a", SelectAll, Some("Editor")),
214 Binding::new("cmd-l", SelectLine, Some("Editor")),
215 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
216 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
217 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
218 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
219 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
220 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
221 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
222 Binding::new("cmd-/", ToggleComments, Some("Editor")),
223 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
224 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
225 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
226 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
227 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
228 Binding::new("f12", GoToDefinition, Some("Editor")),
229 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
230 Binding::new("pageup", PageUp, Some("Editor")),
231 Binding::new("pagedown", PageDown, Some("Editor")),
232 Binding::new("alt-cmd-[", Fold, Some("Editor")),
233 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
234 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
235 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
236 ]);
237
238 cx.add_action(Editor::open_new);
239 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
240 cx.add_action(Editor::select);
241 cx.add_action(Editor::cancel);
242 cx.add_action(Editor::handle_input);
243 cx.add_action(Editor::newline);
244 cx.add_action(Editor::backspace);
245 cx.add_action(Editor::delete);
246 cx.add_action(Editor::tab);
247 cx.add_action(Editor::outdent);
248 cx.add_action(Editor::delete_line);
249 cx.add_action(Editor::delete_to_previous_word_boundary);
250 cx.add_action(Editor::delete_to_next_word_boundary);
251 cx.add_action(Editor::delete_to_beginning_of_line);
252 cx.add_action(Editor::delete_to_end_of_line);
253 cx.add_action(Editor::cut_to_end_of_line);
254 cx.add_action(Editor::duplicate_line);
255 cx.add_action(Editor::move_line_up);
256 cx.add_action(Editor::move_line_down);
257 cx.add_action(Editor::cut);
258 cx.add_action(Editor::copy);
259 cx.add_action(Editor::paste);
260 cx.add_action(Editor::undo);
261 cx.add_action(Editor::redo);
262 cx.add_action(Editor::move_up);
263 cx.add_action(Editor::move_down);
264 cx.add_action(Editor::move_left);
265 cx.add_action(Editor::move_right);
266 cx.add_action(Editor::move_to_previous_word_boundary);
267 cx.add_action(Editor::move_to_next_word_boundary);
268 cx.add_action(Editor::move_to_beginning_of_line);
269 cx.add_action(Editor::move_to_end_of_line);
270 cx.add_action(Editor::move_to_beginning);
271 cx.add_action(Editor::move_to_end);
272 cx.add_action(Editor::select_up);
273 cx.add_action(Editor::select_down);
274 cx.add_action(Editor::select_left);
275 cx.add_action(Editor::select_right);
276 cx.add_action(Editor::select_to_previous_word_boundary);
277 cx.add_action(Editor::select_to_next_word_boundary);
278 cx.add_action(Editor::select_to_beginning_of_line);
279 cx.add_action(Editor::select_to_end_of_line);
280 cx.add_action(Editor::select_to_beginning);
281 cx.add_action(Editor::select_to_end);
282 cx.add_action(Editor::select_all);
283 cx.add_action(Editor::select_line);
284 cx.add_action(Editor::split_selection_into_lines);
285 cx.add_action(Editor::add_selection_above);
286 cx.add_action(Editor::add_selection_below);
287 cx.add_action(Editor::select_next);
288 cx.add_action(Editor::toggle_comments);
289 cx.add_action(Editor::select_larger_syntax_node);
290 cx.add_action(Editor::select_smaller_syntax_node);
291 cx.add_action(Editor::move_to_enclosing_bracket);
292 cx.add_action(Editor::show_next_diagnostic);
293 cx.add_action(Editor::go_to_definition);
294 cx.add_action(Editor::page_up);
295 cx.add_action(Editor::page_down);
296 cx.add_action(Editor::fold);
297 cx.add_action(Editor::unfold);
298 cx.add_action(Editor::fold_selected_ranges);
299 cx.add_action(Editor::show_completions);
300 cx.add_action(|editor: &mut Editor, _: &ConfirmCompletion, cx| {
301 if let Some(task) = editor.confirm_completion(cx) {
302 task.detach_and_log_err(cx);
303 }
304 });
305}
306
307trait SelectionExt {
308 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
309 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
310 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
311 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
312 -> Range<u32>;
313}
314
315trait InvalidationRegion {
316 fn ranges(&self) -> &[Range<Anchor>];
317}
318
319#[derive(Clone, Debug)]
320pub enum SelectPhase {
321 Begin {
322 position: DisplayPoint,
323 add: bool,
324 click_count: usize,
325 },
326 BeginColumnar {
327 position: DisplayPoint,
328 overshoot: u32,
329 },
330 Extend {
331 position: DisplayPoint,
332 click_count: usize,
333 },
334 Update {
335 position: DisplayPoint,
336 overshoot: u32,
337 scroll_position: Vector2F,
338 },
339 End,
340}
341
342#[derive(Clone, Debug)]
343enum SelectMode {
344 Character,
345 Word(Range<Anchor>),
346 Line(Range<Anchor>),
347 All,
348}
349
350#[derive(PartialEq, Eq)]
351pub enum Autoscroll {
352 Fit,
353 Center,
354 Newest,
355}
356
357#[derive(Copy, Clone, PartialEq, Eq)]
358pub enum EditorMode {
359 SingleLine,
360 AutoHeight { max_lines: usize },
361 Full,
362}
363
364#[derive(Clone)]
365pub struct EditorSettings {
366 pub tab_size: usize,
367 pub soft_wrap: SoftWrap,
368 pub style: EditorStyle,
369}
370
371#[derive(Clone)]
372pub enum SoftWrap {
373 None,
374 EditorWidth,
375 Column(u32),
376}
377
378pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
379
380pub struct Editor {
381 handle: WeakViewHandle<Self>,
382 buffer: ModelHandle<MultiBuffer>,
383 display_map: ModelHandle<DisplayMap>,
384 next_selection_id: usize,
385 selections: Arc<[Selection<Anchor>]>,
386 pending_selection: Option<PendingSelection>,
387 columnar_selection_tail: Option<Anchor>,
388 add_selections_state: Option<AddSelectionsState>,
389 select_next_state: Option<SelectNextState>,
390 selection_history:
391 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
392 autoclose_stack: InvalidationStack<BracketPairState>,
393 snippet_stack: InvalidationStack<SnippetState>,
394 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
395 active_diagnostics: Option<ActiveDiagnosticGroup>,
396 scroll_position: Vector2F,
397 scroll_top_anchor: Option<Anchor>,
398 autoscroll_request: Option<Autoscroll>,
399 build_settings: BuildSettings,
400 focused: bool,
401 show_local_cursors: bool,
402 blink_epoch: usize,
403 blinking_paused: bool,
404 mode: EditorMode,
405 vertical_scroll_margin: f32,
406 placeholder_text: Option<Arc<str>>,
407 highlighted_rows: Option<Range<u32>>,
408 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
409 nav_history: Option<ItemNavHistory>,
410 completion_state: Option<CompletionState>,
411 completions_task: Option<Task<Option<()>>>,
412}
413
414pub struct EditorSnapshot {
415 pub mode: EditorMode,
416 pub display_snapshot: DisplaySnapshot,
417 pub placeholder_text: Option<Arc<str>>,
418 is_focused: bool,
419 scroll_position: Vector2F,
420 scroll_top_anchor: Option<Anchor>,
421}
422
423struct PendingSelection {
424 selection: Selection<Anchor>,
425 mode: SelectMode,
426}
427
428struct AddSelectionsState {
429 above: bool,
430 stack: Vec<usize>,
431}
432
433struct SelectNextState {
434 query: AhoCorasick,
435 wordwise: bool,
436 done: bool,
437}
438
439struct BracketPairState {
440 ranges: Vec<Range<Anchor>>,
441 pair: BracketPair,
442}
443
444struct SnippetState {
445 ranges: Vec<Vec<Range<Anchor>>>,
446 active_index: usize,
447}
448
449struct InvalidationStack<T>(Vec<T>);
450
451struct CompletionState {
452 initial_position: Anchor,
453 completions: Arc<[Completion<Anchor>]>,
454 match_candidates: Vec<StringMatchCandidate>,
455 matches: Arc<[StringMatch]>,
456 selected_item: usize,
457 list: UniformListState,
458}
459
460impl CompletionState {
461 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
462 let mut matches = if let Some(query) = query {
463 fuzzy::match_strings(
464 &self.match_candidates,
465 query,
466 false,
467 100,
468 &Default::default(),
469 executor,
470 )
471 .await
472 } else {
473 self.match_candidates
474 .iter()
475 .enumerate()
476 .map(|(candidate_id, candidate)| StringMatch {
477 candidate_id,
478 score: Default::default(),
479 positions: Default::default(),
480 string: candidate.string.clone(),
481 })
482 .collect()
483 };
484 matches.sort_unstable_by_key(|mat| {
485 (
486 Reverse(OrderedFloat(mat.score)),
487 self.completions[mat.candidate_id].sort_key(),
488 )
489 });
490
491 for mat in &mut matches {
492 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
493 for position in &mut mat.positions {
494 *position += filter_start;
495 }
496 }
497
498 self.matches = matches.into();
499 }
500}
501
502#[derive(Debug)]
503struct ActiveDiagnosticGroup {
504 primary_range: Range<Anchor>,
505 primary_message: String,
506 blocks: HashMap<BlockId, Diagnostic>,
507 is_valid: bool,
508}
509
510#[derive(Serialize, Deserialize)]
511struct ClipboardSelection {
512 len: usize,
513 is_entire_line: bool,
514}
515
516pub struct NavigationData {
517 anchor: Anchor,
518 offset: usize,
519}
520
521impl Editor {
522 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
523 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
524 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
525 let mut view = Self::for_buffer(buffer, build_settings, cx);
526 view.mode = EditorMode::SingleLine;
527 view
528 }
529
530 pub fn auto_height(
531 max_lines: usize,
532 build_settings: BuildSettings,
533 cx: &mut ViewContext<Self>,
534 ) -> 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::AutoHeight { max_lines };
539 view
540 }
541
542 pub fn for_buffer(
543 buffer: ModelHandle<MultiBuffer>,
544 build_settings: BuildSettings,
545 cx: &mut ViewContext<Self>,
546 ) -> Self {
547 Self::new(buffer, build_settings, cx)
548 }
549
550 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
551 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
552 clone.scroll_position = self.scroll_position;
553 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
554 clone.nav_history = self
555 .nav_history
556 .as_ref()
557 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
558 clone
559 }
560
561 pub fn new(
562 buffer: ModelHandle<MultiBuffer>,
563 build_settings: BuildSettings,
564 cx: &mut ViewContext<Self>,
565 ) -> Self {
566 let settings = build_settings(cx);
567 let display_map = cx.add_model(|cx| {
568 DisplayMap::new(
569 buffer.clone(),
570 settings.tab_size,
571 settings.style.text.font_id,
572 settings.style.text.font_size,
573 None,
574 cx,
575 )
576 });
577 cx.observe(&buffer, Self::on_buffer_changed).detach();
578 cx.subscribe(&buffer, Self::on_buffer_event).detach();
579 cx.observe(&display_map, Self::on_display_map_changed)
580 .detach();
581
582 let mut this = Self {
583 handle: cx.weak_handle(),
584 buffer,
585 display_map,
586 selections: Arc::from([]),
587 pending_selection: None,
588 columnar_selection_tail: None,
589 next_selection_id: 0,
590 add_selections_state: None,
591 select_next_state: None,
592 selection_history: Default::default(),
593 autoclose_stack: Default::default(),
594 snippet_stack: Default::default(),
595 select_larger_syntax_node_stack: Vec::new(),
596 active_diagnostics: None,
597 build_settings,
598 scroll_position: Vector2F::zero(),
599 scroll_top_anchor: None,
600 autoscroll_request: None,
601 focused: false,
602 show_local_cursors: false,
603 blink_epoch: 0,
604 blinking_paused: false,
605 mode: EditorMode::Full,
606 vertical_scroll_margin: 3.0,
607 placeholder_text: None,
608 highlighted_rows: None,
609 highlighted_ranges: Default::default(),
610 nav_history: None,
611 completion_state: None,
612 completions_task: None,
613 };
614 let selection = Selection {
615 id: post_inc(&mut this.next_selection_id),
616 start: 0,
617 end: 0,
618 reversed: false,
619 goal: SelectionGoal::None,
620 };
621 this.update_selections(vec![selection], None, cx);
622 this
623 }
624
625 pub fn open_new(
626 workspace: &mut Workspace,
627 _: &workspace::OpenNew,
628 cx: &mut ViewContext<Workspace>,
629 ) {
630 let buffer = cx
631 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
632 workspace.open_item(BufferItemHandle(buffer), cx);
633 }
634
635 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
636 self.buffer.read(cx).replica_id()
637 }
638
639 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
640 &self.buffer
641 }
642
643 pub fn title(&self, cx: &AppContext) -> String {
644 let filename = self
645 .buffer()
646 .read(cx)
647 .file(cx)
648 .map(|file| file.file_name(cx));
649 if let Some(name) = filename {
650 name.to_string_lossy().into()
651 } else {
652 "untitled".into()
653 }
654 }
655
656 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
657 EditorSnapshot {
658 mode: self.mode,
659 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
660 scroll_position: self.scroll_position,
661 scroll_top_anchor: self.scroll_top_anchor.clone(),
662 placeholder_text: self.placeholder_text.clone(),
663 is_focused: self
664 .handle
665 .upgrade(cx)
666 .map_or(false, |handle| handle.is_focused(cx)),
667 }
668 }
669
670 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
671 self.buffer.read(cx).language(cx)
672 }
673
674 pub fn set_placeholder_text(
675 &mut self,
676 placeholder_text: impl Into<Arc<str>>,
677 cx: &mut ViewContext<Self>,
678 ) {
679 self.placeholder_text = Some(placeholder_text.into());
680 cx.notify();
681 }
682
683 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
684 self.vertical_scroll_margin = margin_rows as f32;
685 cx.notify();
686 }
687
688 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
689 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
690
691 if scroll_position.y() == 0. {
692 self.scroll_top_anchor = None;
693 self.scroll_position = scroll_position;
694 } else {
695 let scroll_top_buffer_offset =
696 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
697 let anchor = map
698 .buffer_snapshot
699 .anchor_at(scroll_top_buffer_offset, Bias::Right);
700 self.scroll_position = vec2f(
701 scroll_position.x(),
702 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
703 );
704 self.scroll_top_anchor = Some(anchor);
705 }
706
707 cx.notify();
708 }
709
710 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
711 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
712 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
713 }
714
715 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
716 if max < self.scroll_position.x() {
717 self.scroll_position.set_x(max);
718 true
719 } else {
720 false
721 }
722 }
723
724 pub fn autoscroll_vertically(
725 &mut self,
726 viewport_height: f32,
727 line_height: f32,
728 cx: &mut ViewContext<Self>,
729 ) -> bool {
730 let visible_lines = viewport_height / line_height;
731 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
732 let mut scroll_position =
733 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
734 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
735 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
736 } else {
737 display_map.max_point().row().saturating_sub(1) as f32
738 };
739 if scroll_position.y() > max_scroll_top {
740 scroll_position.set_y(max_scroll_top);
741 self.set_scroll_position(scroll_position, cx);
742 }
743
744 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
745 autoscroll
746 } else {
747 return false;
748 };
749
750 let first_cursor_top;
751 let last_cursor_bottom;
752 if let Some(highlighted_rows) = &self.highlighted_rows {
753 first_cursor_top = highlighted_rows.start as f32;
754 last_cursor_bottom = first_cursor_top + 1.;
755 } else if autoscroll == Autoscroll::Newest {
756 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
757 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
758 last_cursor_bottom = first_cursor_top + 1.;
759 } else {
760 let selections = self.local_selections::<Point>(cx);
761 first_cursor_top = selections
762 .first()
763 .unwrap()
764 .head()
765 .to_display_point(&display_map)
766 .row() as f32;
767 last_cursor_bottom = selections
768 .last()
769 .unwrap()
770 .head()
771 .to_display_point(&display_map)
772 .row() as f32
773 + 1.0;
774 }
775
776 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
777 0.
778 } else {
779 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
780 };
781 if margin < 0.0 {
782 return false;
783 }
784
785 match autoscroll {
786 Autoscroll::Fit | Autoscroll::Newest => {
787 let margin = margin.min(self.vertical_scroll_margin);
788 let target_top = (first_cursor_top - margin).max(0.0);
789 let target_bottom = last_cursor_bottom + margin;
790 let start_row = scroll_position.y();
791 let end_row = start_row + visible_lines;
792
793 if target_top < start_row {
794 scroll_position.set_y(target_top);
795 self.set_scroll_position(scroll_position, cx);
796 } else if target_bottom >= end_row {
797 scroll_position.set_y(target_bottom - visible_lines);
798 self.set_scroll_position(scroll_position, cx);
799 }
800 }
801 Autoscroll::Center => {
802 scroll_position.set_y((first_cursor_top - margin).max(0.0));
803 self.set_scroll_position(scroll_position, cx);
804 }
805 }
806
807 true
808 }
809
810 pub fn autoscroll_horizontally(
811 &mut self,
812 start_row: u32,
813 viewport_width: f32,
814 scroll_width: f32,
815 max_glyph_width: f32,
816 layouts: &[text_layout::Line],
817 cx: &mut ViewContext<Self>,
818 ) -> bool {
819 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
820 let selections = self.local_selections::<Point>(cx);
821
822 let mut target_left;
823 let mut target_right;
824
825 if self.highlighted_rows.is_some() {
826 target_left = 0.0_f32;
827 target_right = 0.0_f32;
828 } else {
829 target_left = std::f32::INFINITY;
830 target_right = 0.0_f32;
831 for selection in selections {
832 let head = selection.head().to_display_point(&display_map);
833 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
834 let start_column = head.column().saturating_sub(3);
835 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
836 target_left = target_left.min(
837 layouts[(head.row() - start_row) as usize]
838 .x_for_index(start_column as usize),
839 );
840 target_right = target_right.max(
841 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
842 + max_glyph_width,
843 );
844 }
845 }
846 }
847
848 target_right = target_right.min(scroll_width);
849
850 if target_right - target_left > viewport_width {
851 return false;
852 }
853
854 let scroll_left = self.scroll_position.x() * max_glyph_width;
855 let scroll_right = scroll_left + viewport_width;
856
857 if target_left < scroll_left {
858 self.scroll_position.set_x(target_left / max_glyph_width);
859 true
860 } else if target_right > scroll_right {
861 self.scroll_position
862 .set_x((target_right - viewport_width) / max_glyph_width);
863 true
864 } else {
865 false
866 }
867 }
868
869 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
870 self.hide_completions(cx);
871
872 match phase {
873 SelectPhase::Begin {
874 position,
875 add,
876 click_count,
877 } => self.begin_selection(*position, *add, *click_count, cx),
878 SelectPhase::BeginColumnar {
879 position,
880 overshoot,
881 } => self.begin_columnar_selection(*position, *overshoot, cx),
882 SelectPhase::Extend {
883 position,
884 click_count,
885 } => self.extend_selection(*position, *click_count, cx),
886 SelectPhase::Update {
887 position,
888 overshoot,
889 scroll_position,
890 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
891 SelectPhase::End => self.end_selection(cx),
892 }
893 }
894
895 fn extend_selection(
896 &mut self,
897 position: DisplayPoint,
898 click_count: usize,
899 cx: &mut ViewContext<Self>,
900 ) {
901 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
902 let tail = self
903 .newest_selection::<usize>(&display_map.buffer_snapshot)
904 .tail();
905 self.begin_selection(position, false, click_count, cx);
906
907 let position = position.to_offset(&display_map, Bias::Left);
908 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
909 let pending = self.pending_selection.as_mut().unwrap();
910
911 if position >= tail {
912 pending.selection.start = tail_anchor.clone();
913 } else {
914 pending.selection.end = tail_anchor.clone();
915 pending.selection.reversed = true;
916 }
917
918 match &mut pending.mode {
919 SelectMode::Word(range) | SelectMode::Line(range) => {
920 *range = tail_anchor.clone()..tail_anchor
921 }
922 _ => {}
923 }
924 }
925
926 fn begin_selection(
927 &mut self,
928 position: DisplayPoint,
929 add: bool,
930 click_count: usize,
931 cx: &mut ViewContext<Self>,
932 ) {
933 if !self.focused {
934 cx.focus_self();
935 cx.emit(Event::Activate);
936 }
937
938 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
939 let buffer = &display_map.buffer_snapshot;
940 let newest_selection = self.newest_anchor_selection().unwrap().clone();
941
942 let start;
943 let end;
944 let mode;
945 match click_count {
946 1 => {
947 start = buffer.anchor_before(position.to_point(&display_map));
948 end = start.clone();
949 mode = SelectMode::Character;
950 }
951 2 => {
952 let range = movement::surrounding_word(&display_map, position);
953 start = buffer.anchor_before(range.start.to_point(&display_map));
954 end = buffer.anchor_before(range.end.to_point(&display_map));
955 mode = SelectMode::Word(start.clone()..end.clone());
956 }
957 3 => {
958 let position = display_map.clip_point(position, Bias::Left);
959 let line_start = movement::line_beginning(&display_map, position, false);
960 let mut next_line_start = line_start.clone();
961 *next_line_start.row_mut() += 1;
962 *next_line_start.column_mut() = 0;
963 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
964
965 start = buffer.anchor_before(line_start.to_point(&display_map));
966 end = buffer.anchor_before(next_line_start.to_point(&display_map));
967 mode = SelectMode::Line(start.clone()..end.clone());
968 }
969 _ => {
970 start = buffer.anchor_before(0);
971 end = buffer.anchor_before(buffer.len());
972 mode = SelectMode::All;
973 }
974 }
975
976 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
977
978 let selection = Selection {
979 id: post_inc(&mut self.next_selection_id),
980 start,
981 end,
982 reversed: false,
983 goal: SelectionGoal::None,
984 };
985
986 if !add {
987 self.update_selections::<usize>(Vec::new(), None, cx);
988 } else if click_count > 1 {
989 // Remove the newest selection since it was only added as part of this multi-click.
990 let mut selections = self.local_selections(cx);
991 selections.retain(|selection| selection.id != newest_selection.id);
992 self.update_selections::<usize>(selections, None, cx)
993 }
994
995 self.pending_selection = Some(PendingSelection { selection, mode });
996
997 cx.notify();
998 }
999
1000 fn begin_columnar_selection(
1001 &mut self,
1002 position: DisplayPoint,
1003 overshoot: u32,
1004 cx: &mut ViewContext<Self>,
1005 ) {
1006 if !self.focused {
1007 cx.focus_self();
1008 cx.emit(Event::Activate);
1009 }
1010
1011 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1012 let tail = self
1013 .newest_selection::<Point>(&display_map.buffer_snapshot)
1014 .tail();
1015 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1016
1017 self.select_columns(
1018 tail.to_display_point(&display_map),
1019 position,
1020 overshoot,
1021 &display_map,
1022 cx,
1023 );
1024 }
1025
1026 fn update_selection(
1027 &mut self,
1028 position: DisplayPoint,
1029 overshoot: u32,
1030 scroll_position: Vector2F,
1031 cx: &mut ViewContext<Self>,
1032 ) {
1033 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1034
1035 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1036 let tail = tail.to_display_point(&display_map);
1037 self.select_columns(tail, position, overshoot, &display_map, cx);
1038 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1039 let buffer = self.buffer.read(cx).snapshot(cx);
1040 let head;
1041 let tail;
1042 match mode {
1043 SelectMode::Character => {
1044 head = position.to_point(&display_map);
1045 tail = selection.tail().to_point(&buffer);
1046 }
1047 SelectMode::Word(original_range) => {
1048 let original_display_range = original_range.start.to_display_point(&display_map)
1049 ..original_range.end.to_display_point(&display_map);
1050 let original_buffer_range = original_display_range.start.to_point(&display_map)
1051 ..original_display_range.end.to_point(&display_map);
1052 if movement::is_inside_word(&display_map, position)
1053 || original_display_range.contains(&position)
1054 {
1055 let word_range = movement::surrounding_word(&display_map, position);
1056 if word_range.start < original_display_range.start {
1057 head = word_range.start.to_point(&display_map);
1058 } else {
1059 head = word_range.end.to_point(&display_map);
1060 }
1061 } else {
1062 head = position.to_point(&display_map);
1063 }
1064
1065 if head <= original_buffer_range.start {
1066 tail = original_buffer_range.end;
1067 } else {
1068 tail = original_buffer_range.start;
1069 }
1070 }
1071 SelectMode::Line(original_range) => {
1072 let original_display_range = original_range.start.to_display_point(&display_map)
1073 ..original_range.end.to_display_point(&display_map);
1074 let original_buffer_range = original_display_range.start.to_point(&display_map)
1075 ..original_display_range.end.to_point(&display_map);
1076 let line_start = movement::line_beginning(&display_map, position, false);
1077 let mut next_line_start = line_start.clone();
1078 *next_line_start.row_mut() += 1;
1079 *next_line_start.column_mut() = 0;
1080 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1081
1082 if line_start < original_display_range.start {
1083 head = line_start.to_point(&display_map);
1084 } else {
1085 head = next_line_start.to_point(&display_map);
1086 }
1087
1088 if head <= original_buffer_range.start {
1089 tail = original_buffer_range.end;
1090 } else {
1091 tail = original_buffer_range.start;
1092 }
1093 }
1094 SelectMode::All => {
1095 return;
1096 }
1097 };
1098
1099 if head < tail {
1100 selection.start = buffer.anchor_before(head);
1101 selection.end = buffer.anchor_before(tail);
1102 selection.reversed = true;
1103 } else {
1104 selection.start = buffer.anchor_before(tail);
1105 selection.end = buffer.anchor_before(head);
1106 selection.reversed = false;
1107 }
1108 } else {
1109 log::error!("update_selection dispatched with no pending selection");
1110 return;
1111 }
1112
1113 self.set_scroll_position(scroll_position, cx);
1114 cx.notify();
1115 }
1116
1117 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1118 self.columnar_selection_tail.take();
1119 if self.pending_selection.is_some() {
1120 let selections = self.local_selections::<usize>(cx);
1121 self.update_selections(selections, None, cx);
1122 }
1123 }
1124
1125 fn select_columns(
1126 &mut self,
1127 tail: DisplayPoint,
1128 head: DisplayPoint,
1129 overshoot: u32,
1130 display_map: &DisplaySnapshot,
1131 cx: &mut ViewContext<Self>,
1132 ) {
1133 let start_row = cmp::min(tail.row(), head.row());
1134 let end_row = cmp::max(tail.row(), head.row());
1135 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1136 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1137 let reversed = start_column < tail.column();
1138
1139 let selections = (start_row..=end_row)
1140 .filter_map(|row| {
1141 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1142 let start = display_map
1143 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1144 .to_point(&display_map);
1145 let end = display_map
1146 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1147 .to_point(&display_map);
1148 Some(Selection {
1149 id: post_inc(&mut self.next_selection_id),
1150 start,
1151 end,
1152 reversed,
1153 goal: SelectionGoal::None,
1154 })
1155 } else {
1156 None
1157 }
1158 })
1159 .collect::<Vec<_>>();
1160
1161 self.update_selections(selections, None, cx);
1162 cx.notify();
1163 }
1164
1165 pub fn is_selecting(&self) -> bool {
1166 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1167 }
1168
1169 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1170 if self.hide_completions(cx).is_some() {
1171 return;
1172 }
1173
1174 if self.snippet_stack.pop().is_some() {
1175 return;
1176 }
1177
1178 if self.mode != EditorMode::Full {
1179 cx.propagate_action();
1180 return;
1181 }
1182
1183 if self.active_diagnostics.is_some() {
1184 self.dismiss_diagnostics(cx);
1185 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1186 let buffer = self.buffer.read(cx).snapshot(cx);
1187 let selection = Selection {
1188 id: selection.id,
1189 start: selection.start.to_point(&buffer),
1190 end: selection.end.to_point(&buffer),
1191 reversed: selection.reversed,
1192 goal: selection.goal,
1193 };
1194 if self.local_selections::<Point>(cx).is_empty() {
1195 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1196 }
1197 } else {
1198 let buffer = self.buffer.read(cx).snapshot(cx);
1199 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1200 if self.selection_count() == 1 {
1201 if oldest_selection.is_empty() {
1202 cx.propagate_action();
1203 return;
1204 }
1205
1206 oldest_selection.start = oldest_selection.head().clone();
1207 oldest_selection.end = oldest_selection.head().clone();
1208 }
1209 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1210 }
1211 }
1212
1213 #[cfg(any(test, feature = "test-support"))]
1214 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1215 &self,
1216 cx: &mut MutableAppContext,
1217 ) -> Vec<Range<D>> {
1218 self.local_selections::<D>(cx)
1219 .iter()
1220 .map(|s| {
1221 if s.reversed {
1222 s.end.clone()..s.start.clone()
1223 } else {
1224 s.start.clone()..s.end.clone()
1225 }
1226 })
1227 .collect()
1228 }
1229
1230 #[cfg(any(test, feature = "test-support"))]
1231 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1232 let display_map = self
1233 .display_map
1234 .update(cx, |display_map, cx| display_map.snapshot(cx));
1235 self.selections
1236 .iter()
1237 .chain(
1238 self.pending_selection
1239 .as_ref()
1240 .map(|pending| &pending.selection),
1241 )
1242 .map(|s| {
1243 if s.reversed {
1244 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1245 } else {
1246 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1247 }
1248 })
1249 .collect()
1250 }
1251
1252 pub fn select_ranges<I, T>(
1253 &mut self,
1254 ranges: I,
1255 autoscroll: Option<Autoscroll>,
1256 cx: &mut ViewContext<Self>,
1257 ) where
1258 I: IntoIterator<Item = Range<T>>,
1259 T: ToOffset,
1260 {
1261 let buffer = self.buffer.read(cx).snapshot(cx);
1262 let selections = ranges
1263 .into_iter()
1264 .map(|range| {
1265 let mut start = range.start.to_offset(&buffer);
1266 let mut end = range.end.to_offset(&buffer);
1267 let reversed = if start > end {
1268 mem::swap(&mut start, &mut end);
1269 true
1270 } else {
1271 false
1272 };
1273 Selection {
1274 id: post_inc(&mut self.next_selection_id),
1275 start,
1276 end,
1277 reversed,
1278 goal: SelectionGoal::None,
1279 }
1280 })
1281 .collect::<Vec<_>>();
1282 self.update_selections(selections, autoscroll, cx);
1283 }
1284
1285 #[cfg(any(test, feature = "test-support"))]
1286 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1287 where
1288 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1289 {
1290 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1291 let selections = ranges
1292 .into_iter()
1293 .map(|range| {
1294 let mut start = range.start;
1295 let mut end = range.end;
1296 let reversed = if start > end {
1297 mem::swap(&mut start, &mut end);
1298 true
1299 } else {
1300 false
1301 };
1302 Selection {
1303 id: post_inc(&mut self.next_selection_id),
1304 start: start.to_point(&display_map),
1305 end: end.to_point(&display_map),
1306 reversed,
1307 goal: SelectionGoal::None,
1308 }
1309 })
1310 .collect();
1311 self.update_selections(selections, None, cx);
1312 }
1313
1314 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1315 let text = action.0.as_ref();
1316 if !self.skip_autoclose_end(text, cx) {
1317 self.start_transaction(cx);
1318 self.insert(text, cx);
1319 self.autoclose_pairs(cx);
1320 self.end_transaction(cx);
1321 self.trigger_completion_on_input(text, cx);
1322 }
1323 }
1324
1325 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1326 self.start_transaction(cx);
1327 let mut old_selections = SmallVec::<[_; 32]>::new();
1328 {
1329 let selections = self.local_selections::<Point>(cx);
1330 let buffer = self.buffer.read(cx).snapshot(cx);
1331 for selection in selections.iter() {
1332 let start_point = selection.start;
1333 let indent = buffer
1334 .indent_column_for_line(start_point.row)
1335 .min(start_point.column);
1336 let start = selection.start.to_offset(&buffer);
1337 let end = selection.end.to_offset(&buffer);
1338
1339 let mut insert_extra_newline = false;
1340 if let Some(language) = buffer.language() {
1341 let leading_whitespace_len = buffer
1342 .reversed_chars_at(start)
1343 .take_while(|c| c.is_whitespace() && *c != '\n')
1344 .map(|c| c.len_utf8())
1345 .sum::<usize>();
1346
1347 let trailing_whitespace_len = buffer
1348 .chars_at(end)
1349 .take_while(|c| c.is_whitespace() && *c != '\n')
1350 .map(|c| c.len_utf8())
1351 .sum::<usize>();
1352
1353 insert_extra_newline = language.brackets().iter().any(|pair| {
1354 let pair_start = pair.start.trim_end();
1355 let pair_end = pair.end.trim_start();
1356
1357 pair.newline
1358 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1359 && buffer.contains_str_at(
1360 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1361 pair_start,
1362 )
1363 });
1364 }
1365
1366 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1367 }
1368 }
1369
1370 self.buffer.update(cx, |buffer, cx| {
1371 let mut delta = 0_isize;
1372 let mut pending_edit: Option<PendingEdit> = None;
1373 for (_, range, indent, insert_extra_newline) in &old_selections {
1374 if pending_edit.as_ref().map_or(false, |pending| {
1375 pending.indent != *indent
1376 || pending.insert_extra_newline != *insert_extra_newline
1377 }) {
1378 let pending = pending_edit.take().unwrap();
1379 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1380 new_text.push('\n');
1381 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1382 if pending.insert_extra_newline {
1383 new_text = new_text.repeat(2);
1384 }
1385 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1386 delta += pending.delta;
1387 }
1388
1389 let start = (range.start as isize + delta) as usize;
1390 let end = (range.end as isize + delta) as usize;
1391 let mut text_len = *indent as usize + 1;
1392 if *insert_extra_newline {
1393 text_len *= 2;
1394 }
1395
1396 let pending = pending_edit.get_or_insert_with(Default::default);
1397 pending.delta += text_len as isize - (end - start) as isize;
1398 pending.indent = *indent;
1399 pending.insert_extra_newline = *insert_extra_newline;
1400 pending.ranges.push(start..end);
1401 }
1402
1403 let pending = pending_edit.unwrap();
1404 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1405 new_text.push('\n');
1406 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1407 if pending.insert_extra_newline {
1408 new_text = new_text.repeat(2);
1409 }
1410 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1411
1412 let buffer = buffer.read(cx);
1413 self.selections = self
1414 .selections
1415 .iter()
1416 .cloned()
1417 .zip(old_selections)
1418 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1419 if insert_extra_newline {
1420 let mut cursor = new_selection.start.to_point(&buffer);
1421 cursor.row -= 1;
1422 cursor.column = buffer.line_len(cursor.row);
1423 let anchor = buffer.anchor_after(cursor);
1424 new_selection.start = anchor.clone();
1425 new_selection.end = anchor;
1426 }
1427 new_selection
1428 })
1429 .collect();
1430 });
1431
1432 self.request_autoscroll(Autoscroll::Fit, cx);
1433 self.end_transaction(cx);
1434
1435 #[derive(Default)]
1436 struct PendingEdit {
1437 indent: u32,
1438 insert_extra_newline: bool,
1439 delta: isize,
1440 ranges: SmallVec<[Range<usize>; 32]>,
1441 }
1442 }
1443
1444 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1445 self.start_transaction(cx);
1446 let old_selections = self.local_selections::<usize>(cx);
1447 self.buffer.update(cx, |buffer, cx| {
1448 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1449 buffer.edit_with_autoindent(edit_ranges, text, cx);
1450 });
1451
1452 let selections = self.local_selections::<usize>(cx);
1453 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1454 self.end_transaction(cx);
1455 }
1456
1457 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1458 if let Some(selection) = self.newest_anchor_selection() {
1459 if self
1460 .buffer
1461 .read(cx)
1462 .is_completion_trigger(selection.head(), text, cx)
1463 {
1464 self.show_completions(&ShowCompletions, cx);
1465 } else {
1466 self.hide_completions(cx);
1467 }
1468 }
1469 }
1470
1471 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1472 let selections = self.local_selections::<usize>(cx);
1473 let mut bracket_pair_state = None;
1474 let mut new_selections = None;
1475 self.buffer.update(cx, |buffer, cx| {
1476 let mut snapshot = buffer.snapshot(cx);
1477 let left_biased_selections = selections
1478 .iter()
1479 .map(|selection| Selection {
1480 id: selection.id,
1481 start: snapshot.anchor_before(selection.start),
1482 end: snapshot.anchor_before(selection.end),
1483 reversed: selection.reversed,
1484 goal: selection.goal,
1485 })
1486 .collect::<Vec<_>>();
1487
1488 let autoclose_pair = snapshot.language().and_then(|language| {
1489 let first_selection_start = selections.first().unwrap().start;
1490 let pair = language.brackets().iter().find(|pair| {
1491 snapshot.contains_str_at(
1492 first_selection_start.saturating_sub(pair.start.len()),
1493 &pair.start,
1494 )
1495 });
1496 pair.and_then(|pair| {
1497 let should_autoclose = selections[1..].iter().all(|selection| {
1498 snapshot.contains_str_at(
1499 selection.start.saturating_sub(pair.start.len()),
1500 &pair.start,
1501 )
1502 });
1503
1504 if should_autoclose {
1505 Some(pair.clone())
1506 } else {
1507 None
1508 }
1509 })
1510 });
1511
1512 if let Some(pair) = autoclose_pair {
1513 let selection_ranges = selections
1514 .iter()
1515 .map(|selection| {
1516 let start = selection.start.to_offset(&snapshot);
1517 start..start
1518 })
1519 .collect::<SmallVec<[_; 32]>>();
1520
1521 buffer.edit(selection_ranges, &pair.end, cx);
1522 snapshot = buffer.snapshot(cx);
1523
1524 new_selections = Some(
1525 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1526 .collect::<Vec<_>>(),
1527 );
1528
1529 if pair.end.len() == 1 {
1530 let mut delta = 0;
1531 bracket_pair_state = Some(BracketPairState {
1532 ranges: selections
1533 .iter()
1534 .map(move |selection| {
1535 let offset = selection.start + delta;
1536 delta += 1;
1537 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1538 })
1539 .collect(),
1540 pair,
1541 });
1542 }
1543 }
1544 });
1545
1546 if let Some(new_selections) = new_selections {
1547 self.update_selections(new_selections, None, cx);
1548 }
1549 if let Some(bracket_pair_state) = bracket_pair_state {
1550 self.autoclose_stack.push(bracket_pair_state);
1551 }
1552 }
1553
1554 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1555 let old_selections = self.local_selections::<usize>(cx);
1556 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1557 autoclose_pair
1558 } else {
1559 return false;
1560 };
1561 if text != autoclose_pair.pair.end {
1562 return false;
1563 }
1564
1565 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1566
1567 let buffer = self.buffer.read(cx).snapshot(cx);
1568 if old_selections
1569 .iter()
1570 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1571 .all(|(selection, autoclose_range)| {
1572 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1573 selection.is_empty() && selection.start == autoclose_range_end
1574 })
1575 {
1576 let new_selections = old_selections
1577 .into_iter()
1578 .map(|selection| {
1579 let cursor = selection.start + 1;
1580 Selection {
1581 id: selection.id,
1582 start: cursor,
1583 end: cursor,
1584 reversed: false,
1585 goal: SelectionGoal::None,
1586 }
1587 })
1588 .collect();
1589 self.autoclose_stack.pop();
1590 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1591 true
1592 } else {
1593 false
1594 }
1595 }
1596
1597 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1598 let offset = position.to_offset(buffer);
1599 let (word_range, kind) = buffer.surrounding_word(offset);
1600 if offset > word_range.start && kind == Some(CharKind::Word) {
1601 Some(
1602 buffer
1603 .text_for_range(word_range.start..offset)
1604 .collect::<String>(),
1605 )
1606 } else {
1607 None
1608 }
1609 }
1610
1611 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1612 let position = if let Some(selection) = self.newest_anchor_selection() {
1613 selection.head()
1614 } else {
1615 return;
1616 };
1617
1618 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1619 let completions = self
1620 .buffer
1621 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1622
1623 self.completions_task = Some(cx.spawn_weak(|this, mut cx| {
1624 async move {
1625 let completions = completions.await?;
1626
1627 let mut completion_state = CompletionState {
1628 initial_position: position,
1629 match_candidates: completions
1630 .iter()
1631 .enumerate()
1632 .map(|(id, completion)| {
1633 StringMatchCandidate::new(
1634 id,
1635 completion.label.text[completion.label.filter_range.clone()].into(),
1636 )
1637 })
1638 .collect(),
1639 completions: completions.into(),
1640 matches: Vec::new().into(),
1641 selected_item: 0,
1642 list: Default::default(),
1643 };
1644
1645 completion_state
1646 .filter(query.as_deref(), cx.background())
1647 .await;
1648
1649 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1650 this.update(&mut cx, |this, cx| {
1651 if completion_state.matches.is_empty() {
1652 this.hide_completions(cx);
1653 } else if this.focused {
1654 this.completion_state = Some(completion_state);
1655 }
1656
1657 cx.notify();
1658 });
1659 }
1660 Ok::<_, anyhow::Error>(())
1661 }
1662 .log_err()
1663 }));
1664 }
1665
1666 fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionState> {
1667 cx.notify();
1668 self.completions_task.take();
1669 self.completion_state.take()
1670 }
1671
1672 fn confirm_completion(&mut self, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
1673 let completion_state = self.hide_completions(cx)?;
1674 let mat = completion_state
1675 .matches
1676 .get(completion_state.selected_item)?;
1677 let completion = completion_state.completions.get(mat.candidate_id)?;
1678
1679 if completion.is_snippet() {
1680 self.insert_snippet(completion.old_range.clone(), &completion.new_text, cx)
1681 .log_err();
1682 } else {
1683 self.buffer.update(cx, |buffer, cx| {
1684 let snapshot = buffer.read(cx);
1685 let old_range = completion.old_range.to_offset(&snapshot);
1686 if old_range.len() != completion.new_text.len()
1687 || !snapshot.contains_str_at(old_range.start, &completion.new_text)
1688 {
1689 drop(snapshot);
1690 buffer.edit_with_autoindent([old_range], &completion.new_text, cx);
1691 }
1692 });
1693 }
1694
1695 Some(self.buffer.update(cx, |buffer, cx| {
1696 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1697 }))
1698 }
1699
1700 pub fn has_completions(&self) -> bool {
1701 self.completion_state.is_some()
1702 }
1703
1704 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1705 self.completion_state.as_ref().map(|state| {
1706 let build_settings = self.build_settings.clone();
1707 let settings = build_settings(cx);
1708 let completions = state.completions.clone();
1709 let matches = state.matches.clone();
1710 let selected_item = state.selected_item;
1711 UniformList::new(
1712 state.list.clone(),
1713 matches.len(),
1714 move |range, items, cx| {
1715 let settings = build_settings(cx);
1716 let start_ix = range.start;
1717 for (ix, mat) in matches[range].iter().enumerate() {
1718 let item_style = if start_ix + ix == selected_item {
1719 settings.style.autocomplete.selected_item
1720 } else {
1721 settings.style.autocomplete.item
1722 };
1723 let completion = &completions[mat.candidate_id];
1724 items.push(
1725 Text::new(completion.label.text.clone(), settings.style.text.clone())
1726 .with_soft_wrap(false)
1727 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
1728 &completion.label.text,
1729 settings.style.text.color.into(),
1730 completion.label.runs.iter().filter_map(
1731 |(range, highlight_id)| {
1732 highlight_id
1733 .style(&settings.style.syntax)
1734 .map(|style| (range.clone(), style))
1735 },
1736 ),
1737 &mat.positions,
1738 ))
1739 .contained()
1740 .with_style(item_style)
1741 .boxed(),
1742 );
1743 }
1744 },
1745 )
1746 .with_width_from_item(
1747 state
1748 .matches
1749 .iter()
1750 .enumerate()
1751 .max_by_key(|(_, mat)| {
1752 state.completions[mat.candidate_id]
1753 .label
1754 .text
1755 .chars()
1756 .count()
1757 })
1758 .map(|(ix, _)| ix),
1759 )
1760 .contained()
1761 .with_style(settings.style.autocomplete.container)
1762 .boxed()
1763 })
1764 }
1765
1766 pub fn insert_snippet<S>(
1767 &mut self,
1768 range: Range<S>,
1769 text: &str,
1770 cx: &mut ViewContext<Self>,
1771 ) -> Result<()>
1772 where
1773 S: Clone + ToOffset,
1774 {
1775 let snippet = Snippet::parse(text)?;
1776 let tabstops = self.buffer.update(cx, |buffer, cx| {
1777 buffer.edit_with_autoindent([range.clone()], snippet.text, cx);
1778 let snapshot = buffer.read(cx);
1779 let start = range.start.to_offset(&snapshot);
1780 snippet
1781 .tabstops
1782 .iter()
1783 .map(|ranges| {
1784 ranges
1785 .into_iter()
1786 .map(|range| {
1787 snapshot.anchor_before(start + range.start)
1788 ..snapshot.anchor_after(start + range.end)
1789 })
1790 .collect::<Vec<_>>()
1791 })
1792 .collect::<Vec<_>>()
1793 });
1794
1795 if let Some(tabstop) = tabstops.first() {
1796 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
1797 self.snippet_stack.push(SnippetState {
1798 active_index: 0,
1799 ranges: tabstops,
1800 });
1801 }
1802
1803 Ok(())
1804 }
1805
1806 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1807 self.move_to_snippet_tabstop(Bias::Right, cx)
1808 }
1809
1810 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
1811 self.move_to_snippet_tabstop(Bias::Left, cx)
1812 }
1813
1814 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
1815 let buffer = self.buffer.read(cx).snapshot(cx);
1816 let old_selections = self.local_selections::<usize>(cx);
1817
1818 if let Some(snippet) = self.snippet_stack.last_mut() {
1819 match bias {
1820 Bias::Left => {
1821 if snippet.active_index > 0 {
1822 snippet.active_index -= 1;
1823 } else {
1824 return false;
1825 }
1826 }
1827 Bias::Right => {
1828 if snippet.active_index + 1 < snippet.ranges.len() {
1829 snippet.active_index += 1;
1830 } else {
1831 return false;
1832 }
1833 }
1834 }
1835 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
1836 let new_selections = old_selections
1837 .into_iter()
1838 .zip(current_ranges.iter())
1839 .map(|(selection, new_range)| {
1840 let new_range = new_range.to_offset(&buffer);
1841 Selection {
1842 id: selection.id,
1843 start: new_range.start,
1844 end: new_range.end,
1845 reversed: false,
1846 goal: SelectionGoal::None,
1847 }
1848 })
1849 .collect();
1850
1851 // Remove the snippet state when moving to the last tabstop.
1852 if snippet.active_index + 1 == snippet.ranges.len() {
1853 self.snippet_stack.pop();
1854 }
1855
1856 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1857 return true;
1858 }
1859 self.snippet_stack.pop();
1860 }
1861
1862 false
1863 }
1864
1865 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1866 self.start_transaction(cx);
1867 self.select_all(&SelectAll, cx);
1868 self.insert("", cx);
1869 self.end_transaction(cx);
1870 }
1871
1872 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1873 self.start_transaction(cx);
1874 let mut selections = self.local_selections::<Point>(cx);
1875 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1876 for selection in &mut selections {
1877 if selection.is_empty() {
1878 let head = selection.head().to_display_point(&display_map);
1879 let cursor = movement::left(&display_map, head)
1880 .unwrap()
1881 .to_point(&display_map);
1882 selection.set_head(cursor);
1883 selection.goal = SelectionGoal::None;
1884 }
1885 }
1886 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1887 self.insert("", cx);
1888 self.end_transaction(cx);
1889 }
1890
1891 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1892 self.start_transaction(cx);
1893 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1894 let mut selections = self.local_selections::<Point>(cx);
1895 for selection in &mut selections {
1896 if selection.is_empty() {
1897 let head = selection.head().to_display_point(&display_map);
1898 let cursor = movement::right(&display_map, head)
1899 .unwrap()
1900 .to_point(&display_map);
1901 selection.set_head(cursor);
1902 selection.goal = SelectionGoal::None;
1903 }
1904 }
1905 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1906 self.insert(&"", cx);
1907 self.end_transaction(cx);
1908 }
1909
1910 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1911 if self.move_to_next_snippet_tabstop(cx) {
1912 return;
1913 }
1914
1915 self.start_transaction(cx);
1916 let tab_size = (self.build_settings)(cx).tab_size;
1917 let mut selections = self.local_selections::<Point>(cx);
1918 let mut last_indent = None;
1919 self.buffer.update(cx, |buffer, cx| {
1920 for selection in &mut selections {
1921 if selection.is_empty() {
1922 let char_column = buffer
1923 .read(cx)
1924 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1925 .flat_map(str::chars)
1926 .count();
1927 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1928 buffer.edit(
1929 [selection.start..selection.start],
1930 " ".repeat(chars_to_next_tab_stop),
1931 cx,
1932 );
1933 selection.start.column += chars_to_next_tab_stop as u32;
1934 selection.end = selection.start;
1935 } else {
1936 let mut start_row = selection.start.row;
1937 let mut end_row = selection.end.row + 1;
1938
1939 // If a selection ends at the beginning of a line, don't indent
1940 // that last line.
1941 if selection.end.column == 0 {
1942 end_row -= 1;
1943 }
1944
1945 // Avoid re-indenting a row that has already been indented by a
1946 // previous selection, but still update this selection's column
1947 // to reflect that indentation.
1948 if let Some((last_indent_row, last_indent_len)) = last_indent {
1949 if last_indent_row == selection.start.row {
1950 selection.start.column += last_indent_len;
1951 start_row += 1;
1952 }
1953 if last_indent_row == selection.end.row {
1954 selection.end.column += last_indent_len;
1955 }
1956 }
1957
1958 for row in start_row..end_row {
1959 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1960 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1961 let row_start = Point::new(row, 0);
1962 buffer.edit(
1963 [row_start..row_start],
1964 " ".repeat(columns_to_next_tab_stop),
1965 cx,
1966 );
1967
1968 // Update this selection's endpoints to reflect the indentation.
1969 if row == selection.start.row {
1970 selection.start.column += columns_to_next_tab_stop as u32;
1971 }
1972 if row == selection.end.row {
1973 selection.end.column += columns_to_next_tab_stop as u32;
1974 }
1975
1976 last_indent = Some((row, columns_to_next_tab_stop as u32));
1977 }
1978 }
1979 }
1980 });
1981
1982 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1983 self.end_transaction(cx);
1984 }
1985
1986 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1987 if self.move_to_prev_snippet_tabstop(cx) {
1988 return;
1989 }
1990
1991 self.start_transaction(cx);
1992 let tab_size = (self.build_settings)(cx).tab_size;
1993 let selections = self.local_selections::<Point>(cx);
1994 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1995 let mut deletion_ranges = Vec::new();
1996 let mut last_outdent = None;
1997 {
1998 let buffer = self.buffer.read(cx).read(cx);
1999 for selection in &selections {
2000 let mut rows = selection.spanned_rows(false, &display_map);
2001
2002 // Avoid re-outdenting a row that has already been outdented by a
2003 // previous selection.
2004 if let Some(last_row) = last_outdent {
2005 if last_row == rows.start {
2006 rows.start += 1;
2007 }
2008 }
2009
2010 for row in rows {
2011 let column = buffer.indent_column_for_line(row) as usize;
2012 if column > 0 {
2013 let mut deletion_len = (column % tab_size) as u32;
2014 if deletion_len == 0 {
2015 deletion_len = tab_size as u32;
2016 }
2017 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2018 last_outdent = Some(row);
2019 }
2020 }
2021 }
2022 }
2023 self.buffer.update(cx, |buffer, cx| {
2024 buffer.edit(deletion_ranges, "", cx);
2025 });
2026
2027 self.update_selections(
2028 self.local_selections::<usize>(cx),
2029 Some(Autoscroll::Fit),
2030 cx,
2031 );
2032 self.end_transaction(cx);
2033 }
2034
2035 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2036 self.start_transaction(cx);
2037
2038 let selections = self.local_selections::<Point>(cx);
2039 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2040 let buffer = self.buffer.read(cx).snapshot(cx);
2041
2042 let mut new_cursors = Vec::new();
2043 let mut edit_ranges = Vec::new();
2044 let mut selections = selections.iter().peekable();
2045 while let Some(selection) = selections.next() {
2046 let mut rows = selection.spanned_rows(false, &display_map);
2047 let goal_display_column = selection.head().to_display_point(&display_map).column();
2048
2049 // Accumulate contiguous regions of rows that we want to delete.
2050 while let Some(next_selection) = selections.peek() {
2051 let next_rows = next_selection.spanned_rows(false, &display_map);
2052 if next_rows.start <= rows.end {
2053 rows.end = next_rows.end;
2054 selections.next().unwrap();
2055 } else {
2056 break;
2057 }
2058 }
2059
2060 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2061 let edit_end;
2062 let cursor_buffer_row;
2063 if buffer.max_point().row >= rows.end {
2064 // If there's a line after the range, delete the \n from the end of the row range
2065 // and position the cursor on the next line.
2066 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2067 cursor_buffer_row = rows.end;
2068 } else {
2069 // If there isn't a line after the range, delete the \n from the line before the
2070 // start of the row range and position the cursor there.
2071 edit_start = edit_start.saturating_sub(1);
2072 edit_end = buffer.len();
2073 cursor_buffer_row = rows.start.saturating_sub(1);
2074 }
2075
2076 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2077 *cursor.column_mut() =
2078 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2079
2080 new_cursors.push((
2081 selection.id,
2082 buffer.anchor_after(cursor.to_point(&display_map)),
2083 ));
2084 edit_ranges.push(edit_start..edit_end);
2085 }
2086
2087 let buffer = self.buffer.update(cx, |buffer, cx| {
2088 buffer.edit(edit_ranges, "", cx);
2089 buffer.snapshot(cx)
2090 });
2091 let new_selections = new_cursors
2092 .into_iter()
2093 .map(|(id, cursor)| {
2094 let cursor = cursor.to_point(&buffer);
2095 Selection {
2096 id,
2097 start: cursor,
2098 end: cursor,
2099 reversed: false,
2100 goal: SelectionGoal::None,
2101 }
2102 })
2103 .collect();
2104 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2105 self.end_transaction(cx);
2106 }
2107
2108 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2109 self.start_transaction(cx);
2110
2111 let selections = self.local_selections::<Point>(cx);
2112 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2113 let buffer = &display_map.buffer_snapshot;
2114
2115 let mut edits = Vec::new();
2116 let mut selections_iter = selections.iter().peekable();
2117 while let Some(selection) = selections_iter.next() {
2118 // Avoid duplicating the same lines twice.
2119 let mut rows = selection.spanned_rows(false, &display_map);
2120
2121 while let Some(next_selection) = selections_iter.peek() {
2122 let next_rows = next_selection.spanned_rows(false, &display_map);
2123 if next_rows.start <= rows.end - 1 {
2124 rows.end = next_rows.end;
2125 selections_iter.next().unwrap();
2126 } else {
2127 break;
2128 }
2129 }
2130
2131 // Copy the text from the selected row region and splice it at the start of the region.
2132 let start = Point::new(rows.start, 0);
2133 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2134 let text = buffer
2135 .text_for_range(start..end)
2136 .chain(Some("\n"))
2137 .collect::<String>();
2138 edits.push((start, text, rows.len() as u32));
2139 }
2140
2141 self.buffer.update(cx, |buffer, cx| {
2142 for (point, text, _) in edits.into_iter().rev() {
2143 buffer.edit(Some(point..point), text, cx);
2144 }
2145 });
2146
2147 self.request_autoscroll(Autoscroll::Fit, cx);
2148 self.end_transaction(cx);
2149 }
2150
2151 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2152 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2153 let buffer = self.buffer.read(cx).snapshot(cx);
2154
2155 let mut edits = Vec::new();
2156 let mut unfold_ranges = Vec::new();
2157 let mut refold_ranges = Vec::new();
2158
2159 let selections = self.local_selections::<Point>(cx);
2160 let mut selections = selections.iter().peekable();
2161 let mut contiguous_row_selections = Vec::new();
2162 let mut new_selections = Vec::new();
2163
2164 while let Some(selection) = selections.next() {
2165 // Find all the selections that span a contiguous row range
2166 contiguous_row_selections.push(selection.clone());
2167 let start_row = selection.start.row;
2168 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2169 display_map.next_line_boundary(selection.end).0.row + 1
2170 } else {
2171 selection.end.row
2172 };
2173
2174 while let Some(next_selection) = selections.peek() {
2175 if next_selection.start.row <= end_row {
2176 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2177 display_map.next_line_boundary(next_selection.end).0.row + 1
2178 } else {
2179 next_selection.end.row
2180 };
2181 contiguous_row_selections.push(selections.next().unwrap().clone());
2182 } else {
2183 break;
2184 }
2185 }
2186
2187 // Move the text spanned by the row range to be before the line preceding the row range
2188 if start_row > 0 {
2189 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2190 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2191 let insertion_point = display_map
2192 .prev_line_boundary(Point::new(start_row - 1, 0))
2193 .0;
2194
2195 // Don't move lines across excerpts
2196 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2197 let text = buffer
2198 .text_for_range(range_to_move.clone())
2199 .flat_map(|s| s.chars())
2200 .skip(1)
2201 .chain(['\n'])
2202 .collect::<String>();
2203
2204 edits.push((
2205 buffer.anchor_after(range_to_move.start)
2206 ..buffer.anchor_before(range_to_move.end),
2207 String::new(),
2208 ));
2209 let insertion_anchor = buffer.anchor_after(insertion_point);
2210 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2211
2212 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2213
2214 // Move selections up
2215 new_selections.extend(contiguous_row_selections.drain(..).map(
2216 |mut selection| {
2217 selection.start.row -= row_delta;
2218 selection.end.row -= row_delta;
2219 selection
2220 },
2221 ));
2222
2223 // Move folds up
2224 unfold_ranges.push(range_to_move.clone());
2225 for fold in display_map.folds_in_range(
2226 buffer.anchor_before(range_to_move.start)
2227 ..buffer.anchor_after(range_to_move.end),
2228 ) {
2229 let mut start = fold.start.to_point(&buffer);
2230 let mut end = fold.end.to_point(&buffer);
2231 start.row -= row_delta;
2232 end.row -= row_delta;
2233 refold_ranges.push(start..end);
2234 }
2235 }
2236 }
2237
2238 // If we didn't move line(s), preserve the existing selections
2239 new_selections.extend(contiguous_row_selections.drain(..));
2240 }
2241
2242 self.start_transaction(cx);
2243 self.unfold_ranges(unfold_ranges, cx);
2244 self.buffer.update(cx, |buffer, cx| {
2245 for (range, text) in edits {
2246 buffer.edit([range], text, cx);
2247 }
2248 });
2249 self.fold_ranges(refold_ranges, cx);
2250 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2251 self.end_transaction(cx);
2252 }
2253
2254 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2256 let buffer = self.buffer.read(cx).snapshot(cx);
2257
2258 let mut edits = Vec::new();
2259 let mut unfold_ranges = Vec::new();
2260 let mut refold_ranges = Vec::new();
2261
2262 let selections = self.local_selections::<Point>(cx);
2263 let mut selections = selections.iter().peekable();
2264 let mut contiguous_row_selections = Vec::new();
2265 let mut new_selections = Vec::new();
2266
2267 while let Some(selection) = selections.next() {
2268 // Find all the selections that span a contiguous row range
2269 contiguous_row_selections.push(selection.clone());
2270 let start_row = selection.start.row;
2271 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2272 display_map.next_line_boundary(selection.end).0.row + 1
2273 } else {
2274 selection.end.row
2275 };
2276
2277 while let Some(next_selection) = selections.peek() {
2278 if next_selection.start.row <= end_row {
2279 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2280 display_map.next_line_boundary(next_selection.end).0.row + 1
2281 } else {
2282 next_selection.end.row
2283 };
2284 contiguous_row_selections.push(selections.next().unwrap().clone());
2285 } else {
2286 break;
2287 }
2288 }
2289
2290 // Move the text spanned by the row range to be after the last line of the row range
2291 if end_row <= buffer.max_point().row {
2292 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2293 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2294
2295 // Don't move lines across excerpt boundaries
2296 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2297 let mut text = String::from("\n");
2298 text.extend(buffer.text_for_range(range_to_move.clone()));
2299 text.pop(); // Drop trailing newline
2300 edits.push((
2301 buffer.anchor_after(range_to_move.start)
2302 ..buffer.anchor_before(range_to_move.end),
2303 String::new(),
2304 ));
2305 let insertion_anchor = buffer.anchor_after(insertion_point);
2306 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2307
2308 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2309
2310 // Move selections down
2311 new_selections.extend(contiguous_row_selections.drain(..).map(
2312 |mut selection| {
2313 selection.start.row += row_delta;
2314 selection.end.row += row_delta;
2315 selection
2316 },
2317 ));
2318
2319 // Move folds down
2320 unfold_ranges.push(range_to_move.clone());
2321 for fold in display_map.folds_in_range(
2322 buffer.anchor_before(range_to_move.start)
2323 ..buffer.anchor_after(range_to_move.end),
2324 ) {
2325 let mut start = fold.start.to_point(&buffer);
2326 let mut end = fold.end.to_point(&buffer);
2327 start.row += row_delta;
2328 end.row += row_delta;
2329 refold_ranges.push(start..end);
2330 }
2331 }
2332 }
2333
2334 // If we didn't move line(s), preserve the existing selections
2335 new_selections.extend(contiguous_row_selections.drain(..));
2336 }
2337
2338 self.start_transaction(cx);
2339 self.unfold_ranges(unfold_ranges, cx);
2340 self.buffer.update(cx, |buffer, cx| {
2341 for (range, text) in edits {
2342 buffer.edit([range], text, cx);
2343 }
2344 });
2345 self.fold_ranges(refold_ranges, cx);
2346 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2347 self.end_transaction(cx);
2348 }
2349
2350 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2351 self.start_transaction(cx);
2352 let mut text = String::new();
2353 let mut selections = self.local_selections::<Point>(cx);
2354 let mut clipboard_selections = Vec::with_capacity(selections.len());
2355 {
2356 let buffer = self.buffer.read(cx).read(cx);
2357 let max_point = buffer.max_point();
2358 for selection in &mut selections {
2359 let is_entire_line = selection.is_empty();
2360 if is_entire_line {
2361 selection.start = Point::new(selection.start.row, 0);
2362 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2363 }
2364 let mut len = 0;
2365 for chunk in buffer.text_for_range(selection.start..selection.end) {
2366 text.push_str(chunk);
2367 len += chunk.len();
2368 }
2369 clipboard_selections.push(ClipboardSelection {
2370 len,
2371 is_entire_line,
2372 });
2373 }
2374 }
2375 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2376 self.insert("", cx);
2377 self.end_transaction(cx);
2378
2379 cx.as_mut()
2380 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2381 }
2382
2383 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2384 let selections = self.local_selections::<Point>(cx);
2385 let mut text = String::new();
2386 let mut clipboard_selections = Vec::with_capacity(selections.len());
2387 {
2388 let buffer = self.buffer.read(cx).read(cx);
2389 let max_point = buffer.max_point();
2390 for selection in selections.iter() {
2391 let mut start = selection.start;
2392 let mut end = selection.end;
2393 let is_entire_line = selection.is_empty();
2394 if is_entire_line {
2395 start = Point::new(start.row, 0);
2396 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2397 }
2398 let mut len = 0;
2399 for chunk in buffer.text_for_range(start..end) {
2400 text.push_str(chunk);
2401 len += chunk.len();
2402 }
2403 clipboard_selections.push(ClipboardSelection {
2404 len,
2405 is_entire_line,
2406 });
2407 }
2408 }
2409
2410 cx.as_mut()
2411 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2412 }
2413
2414 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2415 if let Some(item) = cx.as_mut().read_from_clipboard() {
2416 let clipboard_text = item.text();
2417 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2418 let mut selections = self.local_selections::<usize>(cx);
2419 let all_selections_were_entire_line =
2420 clipboard_selections.iter().all(|s| s.is_entire_line);
2421 if clipboard_selections.len() != selections.len() {
2422 clipboard_selections.clear();
2423 }
2424
2425 let mut delta = 0_isize;
2426 let mut start_offset = 0;
2427 for (i, selection) in selections.iter_mut().enumerate() {
2428 let to_insert;
2429 let entire_line;
2430 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2431 let end_offset = start_offset + clipboard_selection.len;
2432 to_insert = &clipboard_text[start_offset..end_offset];
2433 entire_line = clipboard_selection.is_entire_line;
2434 start_offset = end_offset
2435 } else {
2436 to_insert = clipboard_text.as_str();
2437 entire_line = all_selections_were_entire_line;
2438 }
2439
2440 selection.start = (selection.start as isize + delta) as usize;
2441 selection.end = (selection.end as isize + delta) as usize;
2442
2443 self.buffer.update(cx, |buffer, cx| {
2444 // If the corresponding selection was empty when this slice of the
2445 // clipboard text was written, then the entire line containing the
2446 // selection was copied. If this selection is also currently empty,
2447 // then paste the line before the current line of the buffer.
2448 let range = if selection.is_empty() && entire_line {
2449 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2450 let line_start = selection.start - column;
2451 line_start..line_start
2452 } else {
2453 selection.start..selection.end
2454 };
2455
2456 delta += to_insert.len() as isize - range.len() as isize;
2457 buffer.edit([range], to_insert, cx);
2458 selection.start += to_insert.len();
2459 selection.end = selection.start;
2460 });
2461 }
2462 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2463 } else {
2464 self.insert(clipboard_text, cx);
2465 }
2466 }
2467 }
2468
2469 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2470 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2471 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2472 self.set_selections(selections, cx);
2473 }
2474 self.request_autoscroll(Autoscroll::Fit, cx);
2475 }
2476 }
2477
2478 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2479 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2480 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2481 self.set_selections(selections, cx);
2482 }
2483 self.request_autoscroll(Autoscroll::Fit, cx);
2484 }
2485 }
2486
2487 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2488 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2489 let mut selections = self.local_selections::<Point>(cx);
2490 for selection in &mut selections {
2491 let start = selection.start.to_display_point(&display_map);
2492 let end = selection.end.to_display_point(&display_map);
2493
2494 if start != end {
2495 selection.end = selection.start.clone();
2496 } else {
2497 let cursor = movement::left(&display_map, start)
2498 .unwrap()
2499 .to_point(&display_map);
2500 selection.start = cursor.clone();
2501 selection.end = cursor;
2502 }
2503 selection.reversed = false;
2504 selection.goal = SelectionGoal::None;
2505 }
2506 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2507 }
2508
2509 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2510 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2511 let mut selections = self.local_selections::<Point>(cx);
2512 for selection in &mut selections {
2513 let head = selection.head().to_display_point(&display_map);
2514 let cursor = movement::left(&display_map, head)
2515 .unwrap()
2516 .to_point(&display_map);
2517 selection.set_head(cursor);
2518 selection.goal = SelectionGoal::None;
2519 }
2520 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2521 }
2522
2523 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2524 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2525 let mut selections = self.local_selections::<Point>(cx);
2526 for selection in &mut selections {
2527 let start = selection.start.to_display_point(&display_map);
2528 let end = selection.end.to_display_point(&display_map);
2529
2530 if start != end {
2531 selection.start = selection.end.clone();
2532 } else {
2533 let cursor = movement::right(&display_map, end)
2534 .unwrap()
2535 .to_point(&display_map);
2536 selection.start = cursor;
2537 selection.end = cursor;
2538 }
2539 selection.reversed = false;
2540 selection.goal = SelectionGoal::None;
2541 }
2542 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2543 }
2544
2545 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2546 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2547 let mut selections = self.local_selections::<Point>(cx);
2548 for selection in &mut selections {
2549 let head = selection.head().to_display_point(&display_map);
2550 let cursor = movement::right(&display_map, head)
2551 .unwrap()
2552 .to_point(&display_map);
2553 selection.set_head(cursor);
2554 selection.goal = SelectionGoal::None;
2555 }
2556 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2557 }
2558
2559 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2560 if let Some(completion_state) = &mut self.completion_state {
2561 if completion_state.selected_item > 0 {
2562 completion_state.selected_item -= 1;
2563 completion_state
2564 .list
2565 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2566 }
2567 cx.notify();
2568 return;
2569 }
2570
2571 if matches!(self.mode, EditorMode::SingleLine) {
2572 cx.propagate_action();
2573 return;
2574 }
2575
2576 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2577 let mut selections = self.local_selections::<Point>(cx);
2578 for selection in &mut selections {
2579 let start = selection.start.to_display_point(&display_map);
2580 let end = selection.end.to_display_point(&display_map);
2581 if start != end {
2582 selection.goal = SelectionGoal::None;
2583 }
2584
2585 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2586 let cursor = start.to_point(&display_map);
2587 selection.start = cursor;
2588 selection.end = cursor;
2589 selection.goal = goal;
2590 selection.reversed = false;
2591 }
2592 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2593 }
2594
2595 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2596 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2597 let mut selections = self.local_selections::<Point>(cx);
2598 for selection in &mut selections {
2599 let head = selection.head().to_display_point(&display_map);
2600 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2601 let cursor = head.to_point(&display_map);
2602 selection.set_head(cursor);
2603 selection.goal = goal;
2604 }
2605 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2606 }
2607
2608 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2609 if let Some(completion_state) = &mut self.completion_state {
2610 if completion_state.selected_item + 1 < completion_state.matches.len() {
2611 completion_state.selected_item += 1;
2612 completion_state
2613 .list
2614 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2615 }
2616 cx.notify();
2617 return;
2618 }
2619
2620 if matches!(self.mode, EditorMode::SingleLine) {
2621 cx.propagate_action();
2622 return;
2623 }
2624
2625 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2626 let mut selections = self.local_selections::<Point>(cx);
2627 for selection in &mut selections {
2628 let start = selection.start.to_display_point(&display_map);
2629 let end = selection.end.to_display_point(&display_map);
2630 if start != end {
2631 selection.goal = SelectionGoal::None;
2632 }
2633
2634 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2635 let cursor = start.to_point(&display_map);
2636 selection.start = cursor;
2637 selection.end = cursor;
2638 selection.goal = goal;
2639 selection.reversed = false;
2640 }
2641 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2642 }
2643
2644 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2645 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2646 let mut selections = self.local_selections::<Point>(cx);
2647 for selection in &mut selections {
2648 let head = selection.head().to_display_point(&display_map);
2649 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2650 let cursor = head.to_point(&display_map);
2651 selection.set_head(cursor);
2652 selection.goal = goal;
2653 }
2654 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2655 }
2656
2657 pub fn move_to_previous_word_boundary(
2658 &mut self,
2659 _: &MoveToPreviousWordBoundary,
2660 cx: &mut ViewContext<Self>,
2661 ) {
2662 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2663 let mut selections = self.local_selections::<Point>(cx);
2664 for selection in &mut selections {
2665 let head = selection.head().to_display_point(&display_map);
2666 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2667 selection.start = cursor.clone();
2668 selection.end = cursor;
2669 selection.reversed = false;
2670 selection.goal = SelectionGoal::None;
2671 }
2672 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2673 }
2674
2675 pub fn select_to_previous_word_boundary(
2676 &mut self,
2677 _: &SelectToPreviousWordBoundary,
2678 cx: &mut ViewContext<Self>,
2679 ) {
2680 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2681 let mut selections = self.local_selections::<Point>(cx);
2682 for selection in &mut selections {
2683 let head = selection.head().to_display_point(&display_map);
2684 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2685 selection.set_head(cursor);
2686 selection.goal = SelectionGoal::None;
2687 }
2688 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2689 }
2690
2691 pub fn delete_to_previous_word_boundary(
2692 &mut self,
2693 _: &DeleteToPreviousWordBoundary,
2694 cx: &mut ViewContext<Self>,
2695 ) {
2696 self.start_transaction(cx);
2697 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2698 let mut selections = self.local_selections::<Point>(cx);
2699 for selection in &mut selections {
2700 if selection.is_empty() {
2701 let head = selection.head().to_display_point(&display_map);
2702 let cursor =
2703 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2704 selection.set_head(cursor);
2705 selection.goal = SelectionGoal::None;
2706 }
2707 }
2708 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2709 self.insert("", cx);
2710 self.end_transaction(cx);
2711 }
2712
2713 pub fn move_to_next_word_boundary(
2714 &mut self,
2715 _: &MoveToNextWordBoundary,
2716 cx: &mut ViewContext<Self>,
2717 ) {
2718 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2719 let mut selections = self.local_selections::<Point>(cx);
2720 for selection in &mut selections {
2721 let head = selection.head().to_display_point(&display_map);
2722 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2723 selection.start = cursor;
2724 selection.end = cursor;
2725 selection.reversed = false;
2726 selection.goal = SelectionGoal::None;
2727 }
2728 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2729 }
2730
2731 pub fn select_to_next_word_boundary(
2732 &mut self,
2733 _: &SelectToNextWordBoundary,
2734 cx: &mut ViewContext<Self>,
2735 ) {
2736 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2737 let mut selections = self.local_selections::<Point>(cx);
2738 for selection in &mut selections {
2739 let head = selection.head().to_display_point(&display_map);
2740 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2741 selection.set_head(cursor);
2742 selection.goal = SelectionGoal::None;
2743 }
2744 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2745 }
2746
2747 pub fn delete_to_next_word_boundary(
2748 &mut self,
2749 _: &DeleteToNextWordBoundary,
2750 cx: &mut ViewContext<Self>,
2751 ) {
2752 self.start_transaction(cx);
2753 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2754 let mut selections = self.local_selections::<Point>(cx);
2755 for selection in &mut selections {
2756 if selection.is_empty() {
2757 let head = selection.head().to_display_point(&display_map);
2758 let cursor =
2759 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2760 selection.set_head(cursor);
2761 selection.goal = SelectionGoal::None;
2762 }
2763 }
2764 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2765 self.insert("", cx);
2766 self.end_transaction(cx);
2767 }
2768
2769 pub fn move_to_beginning_of_line(
2770 &mut self,
2771 _: &MoveToBeginningOfLine,
2772 cx: &mut ViewContext<Self>,
2773 ) {
2774 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2775 let mut selections = self.local_selections::<Point>(cx);
2776 for selection in &mut selections {
2777 let head = selection.head().to_display_point(&display_map);
2778 let new_head = movement::line_beginning(&display_map, head, true);
2779 let cursor = new_head.to_point(&display_map);
2780 selection.start = cursor;
2781 selection.end = cursor;
2782 selection.reversed = false;
2783 selection.goal = SelectionGoal::None;
2784 }
2785 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2786 }
2787
2788 pub fn select_to_beginning_of_line(
2789 &mut self,
2790 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2791 cx: &mut ViewContext<Self>,
2792 ) {
2793 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2794 let mut selections = self.local_selections::<Point>(cx);
2795 for selection in &mut selections {
2796 let head = selection.head().to_display_point(&display_map);
2797 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2798 selection.set_head(new_head.to_point(&display_map));
2799 selection.goal = SelectionGoal::None;
2800 }
2801 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2802 }
2803
2804 pub fn delete_to_beginning_of_line(
2805 &mut self,
2806 _: &DeleteToBeginningOfLine,
2807 cx: &mut ViewContext<Self>,
2808 ) {
2809 self.start_transaction(cx);
2810 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2811 self.backspace(&Backspace, cx);
2812 self.end_transaction(cx);
2813 }
2814
2815 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2816 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2817 let mut selections = self.local_selections::<Point>(cx);
2818 {
2819 for selection in &mut selections {
2820 let head = selection.head().to_display_point(&display_map);
2821 let new_head = movement::line_end(&display_map, head);
2822 let anchor = new_head.to_point(&display_map);
2823 selection.start = anchor.clone();
2824 selection.end = anchor;
2825 selection.reversed = false;
2826 selection.goal = SelectionGoal::None;
2827 }
2828 }
2829 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2830 }
2831
2832 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
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 let head = selection.head().to_display_point(&display_map);
2837 let new_head = movement::line_end(&display_map, head);
2838 selection.set_head(new_head.to_point(&display_map));
2839 selection.goal = SelectionGoal::None;
2840 }
2841 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2842 }
2843
2844 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2845 self.start_transaction(cx);
2846 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2847 self.delete(&Delete, cx);
2848 self.end_transaction(cx);
2849 }
2850
2851 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2852 self.start_transaction(cx);
2853 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2854 self.cut(&Cut, cx);
2855 self.end_transaction(cx);
2856 }
2857
2858 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2859 if matches!(self.mode, EditorMode::SingleLine) {
2860 cx.propagate_action();
2861 return;
2862 }
2863
2864 let selection = Selection {
2865 id: post_inc(&mut self.next_selection_id),
2866 start: 0,
2867 end: 0,
2868 reversed: false,
2869 goal: SelectionGoal::None,
2870 };
2871 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2872 }
2873
2874 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2875 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2876 selection.set_head(Point::zero());
2877 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2878 }
2879
2880 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2881 if matches!(self.mode, EditorMode::SingleLine) {
2882 cx.propagate_action();
2883 return;
2884 }
2885
2886 let cursor = self.buffer.read(cx).read(cx).len();
2887 let selection = Selection {
2888 id: post_inc(&mut self.next_selection_id),
2889 start: cursor,
2890 end: cursor,
2891 reversed: false,
2892 goal: SelectionGoal::None,
2893 };
2894 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2895 }
2896
2897 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2898 self.nav_history = nav_history;
2899 }
2900
2901 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2902 self.nav_history.as_ref()
2903 }
2904
2905 fn push_to_nav_history(
2906 &self,
2907 position: Anchor,
2908 new_position: Option<Point>,
2909 cx: &mut ViewContext<Self>,
2910 ) {
2911 if let Some(nav_history) = &self.nav_history {
2912 let buffer = self.buffer.read(cx).read(cx);
2913 let offset = position.to_offset(&buffer);
2914 let point = position.to_point(&buffer);
2915 drop(buffer);
2916
2917 if let Some(new_position) = new_position {
2918 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2919 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2920 return;
2921 }
2922 }
2923
2924 nav_history.push(Some(NavigationData {
2925 anchor: position,
2926 offset,
2927 }));
2928 }
2929 }
2930
2931 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2932 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2933 selection.set_head(self.buffer.read(cx).read(cx).len());
2934 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2935 }
2936
2937 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2938 let selection = Selection {
2939 id: post_inc(&mut self.next_selection_id),
2940 start: 0,
2941 end: self.buffer.read(cx).read(cx).len(),
2942 reversed: false,
2943 goal: SelectionGoal::None,
2944 };
2945 self.update_selections(vec![selection], None, cx);
2946 }
2947
2948 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2949 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2950 let mut selections = self.local_selections::<Point>(cx);
2951 let max_point = display_map.buffer_snapshot.max_point();
2952 for selection in &mut selections {
2953 let rows = selection.spanned_rows(true, &display_map);
2954 selection.start = Point::new(rows.start, 0);
2955 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2956 selection.reversed = false;
2957 }
2958 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2959 }
2960
2961 pub fn split_selection_into_lines(
2962 &mut self,
2963 _: &SplitSelectionIntoLines,
2964 cx: &mut ViewContext<Self>,
2965 ) {
2966 let mut to_unfold = Vec::new();
2967 let mut new_selections = Vec::new();
2968 {
2969 let selections = self.local_selections::<Point>(cx);
2970 let buffer = self.buffer.read(cx).read(cx);
2971 for selection in selections {
2972 for row in selection.start.row..selection.end.row {
2973 let cursor = Point::new(row, buffer.line_len(row));
2974 new_selections.push(Selection {
2975 id: post_inc(&mut self.next_selection_id),
2976 start: cursor,
2977 end: cursor,
2978 reversed: false,
2979 goal: SelectionGoal::None,
2980 });
2981 }
2982 new_selections.push(Selection {
2983 id: selection.id,
2984 start: selection.end,
2985 end: selection.end,
2986 reversed: false,
2987 goal: SelectionGoal::None,
2988 });
2989 to_unfold.push(selection.start..selection.end);
2990 }
2991 }
2992 self.unfold_ranges(to_unfold, cx);
2993 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2994 }
2995
2996 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2997 self.add_selection(true, cx);
2998 }
2999
3000 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3001 self.add_selection(false, cx);
3002 }
3003
3004 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3005 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3006 let mut selections = self.local_selections::<Point>(cx);
3007 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3008 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3009 let range = oldest_selection.display_range(&display_map).sorted();
3010 let columns = cmp::min(range.start.column(), range.end.column())
3011 ..cmp::max(range.start.column(), range.end.column());
3012
3013 selections.clear();
3014 let mut stack = Vec::new();
3015 for row in range.start.row()..=range.end.row() {
3016 if let Some(selection) = self.build_columnar_selection(
3017 &display_map,
3018 row,
3019 &columns,
3020 oldest_selection.reversed,
3021 ) {
3022 stack.push(selection.id);
3023 selections.push(selection);
3024 }
3025 }
3026
3027 if above {
3028 stack.reverse();
3029 }
3030
3031 AddSelectionsState { above, stack }
3032 });
3033
3034 let last_added_selection = *state.stack.last().unwrap();
3035 let mut new_selections = Vec::new();
3036 if above == state.above {
3037 let end_row = if above {
3038 0
3039 } else {
3040 display_map.max_point().row()
3041 };
3042
3043 'outer: for selection in selections {
3044 if selection.id == last_added_selection {
3045 let range = selection.display_range(&display_map).sorted();
3046 debug_assert_eq!(range.start.row(), range.end.row());
3047 let mut row = range.start.row();
3048 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3049 {
3050 start..end
3051 } else {
3052 cmp::min(range.start.column(), range.end.column())
3053 ..cmp::max(range.start.column(), range.end.column())
3054 };
3055
3056 while row != end_row {
3057 if above {
3058 row -= 1;
3059 } else {
3060 row += 1;
3061 }
3062
3063 if let Some(new_selection) = self.build_columnar_selection(
3064 &display_map,
3065 row,
3066 &columns,
3067 selection.reversed,
3068 ) {
3069 state.stack.push(new_selection.id);
3070 if above {
3071 new_selections.push(new_selection);
3072 new_selections.push(selection);
3073 } else {
3074 new_selections.push(selection);
3075 new_selections.push(new_selection);
3076 }
3077
3078 continue 'outer;
3079 }
3080 }
3081 }
3082
3083 new_selections.push(selection);
3084 }
3085 } else {
3086 new_selections = selections;
3087 new_selections.retain(|s| s.id != last_added_selection);
3088 state.stack.pop();
3089 }
3090
3091 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3092 if state.stack.len() > 1 {
3093 self.add_selections_state = Some(state);
3094 }
3095 }
3096
3097 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3098 let replace_newest = action.0;
3099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3100 let buffer = &display_map.buffer_snapshot;
3101 let mut selections = self.local_selections::<usize>(cx);
3102 if let Some(mut select_next_state) = self.select_next_state.take() {
3103 let query = &select_next_state.query;
3104 if !select_next_state.done {
3105 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3106 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3107 let mut next_selected_range = None;
3108
3109 let bytes_after_last_selection =
3110 buffer.bytes_in_range(last_selection.end..buffer.len());
3111 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3112 let query_matches = query
3113 .stream_find_iter(bytes_after_last_selection)
3114 .map(|result| (last_selection.end, result))
3115 .chain(
3116 query
3117 .stream_find_iter(bytes_before_first_selection)
3118 .map(|result| (0, result)),
3119 );
3120 for (start_offset, query_match) in query_matches {
3121 let query_match = query_match.unwrap(); // can only fail due to I/O
3122 let offset_range =
3123 start_offset + query_match.start()..start_offset + query_match.end();
3124 let display_range = offset_range.start.to_display_point(&display_map)
3125 ..offset_range.end.to_display_point(&display_map);
3126
3127 if !select_next_state.wordwise
3128 || (!movement::is_inside_word(&display_map, display_range.start)
3129 && !movement::is_inside_word(&display_map, display_range.end))
3130 {
3131 next_selected_range = Some(offset_range);
3132 break;
3133 }
3134 }
3135
3136 if let Some(next_selected_range) = next_selected_range {
3137 if replace_newest {
3138 if let Some(newest_id) =
3139 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3140 {
3141 selections.retain(|s| s.id != newest_id);
3142 }
3143 }
3144 selections.push(Selection {
3145 id: post_inc(&mut self.next_selection_id),
3146 start: next_selected_range.start,
3147 end: next_selected_range.end,
3148 reversed: false,
3149 goal: SelectionGoal::None,
3150 });
3151 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3152 } else {
3153 select_next_state.done = true;
3154 }
3155 }
3156
3157 self.select_next_state = Some(select_next_state);
3158 } else if selections.len() == 1 {
3159 let selection = selections.last_mut().unwrap();
3160 if selection.start == selection.end {
3161 let word_range = movement::surrounding_word(
3162 &display_map,
3163 selection.start.to_display_point(&display_map),
3164 );
3165 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3166 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3167 selection.goal = SelectionGoal::None;
3168 selection.reversed = false;
3169
3170 let query = buffer
3171 .text_for_range(selection.start..selection.end)
3172 .collect::<String>();
3173 let select_state = SelectNextState {
3174 query: AhoCorasick::new_auto_configured(&[query]),
3175 wordwise: true,
3176 done: false,
3177 };
3178 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3179 self.select_next_state = Some(select_state);
3180 } else {
3181 let query = buffer
3182 .text_for_range(selection.start..selection.end)
3183 .collect::<String>();
3184 self.select_next_state = Some(SelectNextState {
3185 query: AhoCorasick::new_auto_configured(&[query]),
3186 wordwise: false,
3187 done: false,
3188 });
3189 self.select_next(action, cx);
3190 }
3191 }
3192 }
3193
3194 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3195 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3196 // as that portion won't be used for detecting if a line is a comment.
3197 let full_comment_prefix =
3198 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3199 prefix.to_string()
3200 } else {
3201 return;
3202 };
3203 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3204 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3205
3206 self.start_transaction(cx);
3207 let mut selections = self.local_selections::<Point>(cx);
3208 let mut all_selection_lines_are_comments = true;
3209 let mut edit_ranges = Vec::new();
3210 let mut last_toggled_row = None;
3211 self.buffer.update(cx, |buffer, cx| {
3212 for selection in &mut selections {
3213 edit_ranges.clear();
3214 let snapshot = buffer.snapshot(cx);
3215
3216 let end_row =
3217 if selection.end.row > selection.start.row && selection.end.column == 0 {
3218 selection.end.row
3219 } else {
3220 selection.end.row + 1
3221 };
3222
3223 for row in selection.start.row..end_row {
3224 // If multiple selections contain a given row, avoid processing that
3225 // row more than once.
3226 if last_toggled_row == Some(row) {
3227 continue;
3228 } else {
3229 last_toggled_row = Some(row);
3230 }
3231
3232 if snapshot.is_line_blank(row) {
3233 continue;
3234 }
3235
3236 let start = Point::new(row, snapshot.indent_column_for_line(row));
3237 let mut line_bytes = snapshot
3238 .bytes_in_range(start..snapshot.max_point())
3239 .flatten()
3240 .copied();
3241
3242 // If this line currently begins with the line comment prefix, then record
3243 // the range containing the prefix.
3244 if all_selection_lines_are_comments
3245 && line_bytes
3246 .by_ref()
3247 .take(comment_prefix.len())
3248 .eq(comment_prefix.bytes())
3249 {
3250 // Include any whitespace that matches the comment prefix.
3251 let matching_whitespace_len = line_bytes
3252 .zip(comment_prefix_whitespace.bytes())
3253 .take_while(|(a, b)| a == b)
3254 .count() as u32;
3255 let end = Point::new(
3256 row,
3257 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3258 );
3259 edit_ranges.push(start..end);
3260 }
3261 // If this line does not begin with the line comment prefix, then record
3262 // the position where the prefix should be inserted.
3263 else {
3264 all_selection_lines_are_comments = false;
3265 edit_ranges.push(start..start);
3266 }
3267 }
3268
3269 if !edit_ranges.is_empty() {
3270 if all_selection_lines_are_comments {
3271 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3272 } else {
3273 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3274 let edit_ranges = edit_ranges.iter().map(|range| {
3275 let position = Point::new(range.start.row, min_column);
3276 position..position
3277 });
3278 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3279 }
3280 }
3281 }
3282 });
3283
3284 self.update_selections(
3285 self.local_selections::<usize>(cx),
3286 Some(Autoscroll::Fit),
3287 cx,
3288 );
3289 self.end_transaction(cx);
3290 }
3291
3292 pub fn select_larger_syntax_node(
3293 &mut self,
3294 _: &SelectLargerSyntaxNode,
3295 cx: &mut ViewContext<Self>,
3296 ) {
3297 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3298 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3299 let buffer = self.buffer.read(cx).snapshot(cx);
3300
3301 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3302 let mut selected_larger_node = false;
3303 let new_selections = old_selections
3304 .iter()
3305 .map(|selection| {
3306 let old_range = selection.start..selection.end;
3307 let mut new_range = old_range.clone();
3308 while let Some(containing_range) =
3309 buffer.range_for_syntax_ancestor(new_range.clone())
3310 {
3311 new_range = containing_range;
3312 if !display_map.intersects_fold(new_range.start)
3313 && !display_map.intersects_fold(new_range.end)
3314 {
3315 break;
3316 }
3317 }
3318
3319 selected_larger_node |= new_range != old_range;
3320 Selection {
3321 id: selection.id,
3322 start: new_range.start,
3323 end: new_range.end,
3324 goal: SelectionGoal::None,
3325 reversed: selection.reversed,
3326 }
3327 })
3328 .collect::<Vec<_>>();
3329
3330 if selected_larger_node {
3331 stack.push(old_selections);
3332 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3333 }
3334 self.select_larger_syntax_node_stack = stack;
3335 }
3336
3337 pub fn select_smaller_syntax_node(
3338 &mut self,
3339 _: &SelectSmallerSyntaxNode,
3340 cx: &mut ViewContext<Self>,
3341 ) {
3342 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3343 if let Some(selections) = stack.pop() {
3344 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3345 }
3346 self.select_larger_syntax_node_stack = stack;
3347 }
3348
3349 pub fn move_to_enclosing_bracket(
3350 &mut self,
3351 _: &MoveToEnclosingBracket,
3352 cx: &mut ViewContext<Self>,
3353 ) {
3354 let mut selections = self.local_selections::<usize>(cx);
3355 let buffer = self.buffer.read(cx).snapshot(cx);
3356 for selection in &mut selections {
3357 if let Some((open_range, close_range)) =
3358 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3359 {
3360 let close_range = close_range.to_inclusive();
3361 let destination = if close_range.contains(&selection.start)
3362 && close_range.contains(&selection.end)
3363 {
3364 open_range.end
3365 } else {
3366 *close_range.start()
3367 };
3368 selection.start = destination;
3369 selection.end = destination;
3370 }
3371 }
3372
3373 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3374 }
3375
3376 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3377 let buffer = self.buffer.read(cx).snapshot(cx);
3378 let selection = self.newest_selection::<usize>(&buffer);
3379 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3380 active_diagnostics
3381 .primary_range
3382 .to_offset(&buffer)
3383 .to_inclusive()
3384 });
3385 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3386 if active_primary_range.contains(&selection.head()) {
3387 *active_primary_range.end()
3388 } else {
3389 selection.head()
3390 }
3391 } else {
3392 selection.head()
3393 };
3394
3395 loop {
3396 let next_group = buffer
3397 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3398 .find_map(|entry| {
3399 if entry.diagnostic.is_primary
3400 && !entry.range.is_empty()
3401 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3402 {
3403 Some((entry.range, entry.diagnostic.group_id))
3404 } else {
3405 None
3406 }
3407 });
3408
3409 if let Some((primary_range, group_id)) = next_group {
3410 self.activate_diagnostics(group_id, cx);
3411 self.update_selections(
3412 vec![Selection {
3413 id: selection.id,
3414 start: primary_range.start,
3415 end: primary_range.start,
3416 reversed: false,
3417 goal: SelectionGoal::None,
3418 }],
3419 Some(Autoscroll::Center),
3420 cx,
3421 );
3422 break;
3423 } else if search_start == 0 {
3424 break;
3425 } else {
3426 // Cycle around to the start of the buffer.
3427 search_start = 0;
3428 }
3429 }
3430 }
3431
3432 pub fn go_to_definition(
3433 workspace: &mut Workspace,
3434 _: &GoToDefinition,
3435 cx: &mut ViewContext<Workspace>,
3436 ) {
3437 let active_item = workspace.active_item(cx);
3438 let editor_handle = if let Some(editor) = active_item
3439 .as_ref()
3440 .and_then(|item| item.act_as::<Self>(cx))
3441 {
3442 editor
3443 } else {
3444 return;
3445 };
3446
3447 let editor = editor_handle.read(cx);
3448 let buffer = editor.buffer.read(cx);
3449 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3450 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3451 let definitions = workspace
3452 .project()
3453 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3454 cx.spawn(|workspace, mut cx| async move {
3455 let definitions = definitions.await?;
3456 workspace.update(&mut cx, |workspace, cx| {
3457 for definition in definitions {
3458 let range = definition
3459 .target_range
3460 .to_offset(definition.target_buffer.read(cx));
3461 let target_editor_handle = workspace
3462 .open_item(BufferItemHandle(definition.target_buffer), cx)
3463 .downcast::<Self>()
3464 .unwrap();
3465
3466 target_editor_handle.update(cx, |target_editor, cx| {
3467 // When selecting a definition in a different buffer, disable the nav history
3468 // to avoid creating a history entry at the previous cursor location.
3469 let disabled_history = if editor_handle == target_editor_handle {
3470 None
3471 } else {
3472 target_editor.nav_history.take()
3473 };
3474 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3475 if disabled_history.is_some() {
3476 target_editor.nav_history = disabled_history;
3477 }
3478 });
3479 }
3480 });
3481
3482 Ok::<(), anyhow::Error>(())
3483 })
3484 .detach_and_log_err(cx);
3485 }
3486
3487 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3488 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3489 let buffer = self.buffer.read(cx).snapshot(cx);
3490 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3491 let is_valid = buffer
3492 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3493 .any(|entry| {
3494 entry.diagnostic.is_primary
3495 && !entry.range.is_empty()
3496 && entry.range.start == primary_range_start
3497 && entry.diagnostic.message == active_diagnostics.primary_message
3498 });
3499
3500 if is_valid != active_diagnostics.is_valid {
3501 active_diagnostics.is_valid = is_valid;
3502 let mut new_styles = HashMap::default();
3503 for (block_id, diagnostic) in &active_diagnostics.blocks {
3504 new_styles.insert(
3505 *block_id,
3506 diagnostic_block_renderer(
3507 diagnostic.clone(),
3508 is_valid,
3509 self.build_settings.clone(),
3510 ),
3511 );
3512 }
3513 self.display_map
3514 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3515 }
3516 }
3517 }
3518
3519 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3520 self.dismiss_diagnostics(cx);
3521 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3522 let buffer = self.buffer.read(cx).snapshot(cx);
3523
3524 let mut primary_range = None;
3525 let mut primary_message = None;
3526 let mut group_end = Point::zero();
3527 let diagnostic_group = buffer
3528 .diagnostic_group::<Point>(group_id)
3529 .map(|entry| {
3530 if entry.range.end > group_end {
3531 group_end = entry.range.end;
3532 }
3533 if entry.diagnostic.is_primary {
3534 primary_range = Some(entry.range.clone());
3535 primary_message = Some(entry.diagnostic.message.clone());
3536 }
3537 entry
3538 })
3539 .collect::<Vec<_>>();
3540 let primary_range = primary_range.unwrap();
3541 let primary_message = primary_message.unwrap();
3542 let primary_range =
3543 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3544
3545 let blocks = display_map
3546 .insert_blocks(
3547 diagnostic_group.iter().map(|entry| {
3548 let build_settings = self.build_settings.clone();
3549 let diagnostic = entry.diagnostic.clone();
3550 let message_height = diagnostic.message.lines().count() as u8;
3551
3552 BlockProperties {
3553 position: buffer.anchor_after(entry.range.start),
3554 height: message_height,
3555 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3556 disposition: BlockDisposition::Below,
3557 }
3558 }),
3559 cx,
3560 )
3561 .into_iter()
3562 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3563 .collect();
3564
3565 Some(ActiveDiagnosticGroup {
3566 primary_range,
3567 primary_message,
3568 blocks,
3569 is_valid: true,
3570 })
3571 });
3572 }
3573
3574 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3575 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3576 self.display_map.update(cx, |display_map, cx| {
3577 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3578 });
3579 cx.notify();
3580 }
3581 }
3582
3583 fn build_columnar_selection(
3584 &mut self,
3585 display_map: &DisplaySnapshot,
3586 row: u32,
3587 columns: &Range<u32>,
3588 reversed: bool,
3589 ) -> Option<Selection<Point>> {
3590 let is_empty = columns.start == columns.end;
3591 let line_len = display_map.line_len(row);
3592 if columns.start < line_len || (is_empty && columns.start == line_len) {
3593 let start = DisplayPoint::new(row, columns.start);
3594 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3595 Some(Selection {
3596 id: post_inc(&mut self.next_selection_id),
3597 start: start.to_point(display_map),
3598 end: end.to_point(display_map),
3599 reversed,
3600 goal: SelectionGoal::ColumnRange {
3601 start: columns.start,
3602 end: columns.end,
3603 },
3604 })
3605 } else {
3606 None
3607 }
3608 }
3609
3610 pub fn local_selections_in_range(
3611 &self,
3612 range: Range<Anchor>,
3613 display_map: &DisplaySnapshot,
3614 ) -> Vec<Selection<Point>> {
3615 let buffer = &display_map.buffer_snapshot;
3616
3617 let start_ix = match self
3618 .selections
3619 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3620 {
3621 Ok(ix) | Err(ix) => ix,
3622 };
3623 let end_ix = match self
3624 .selections
3625 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3626 {
3627 Ok(ix) => ix + 1,
3628 Err(ix) => ix,
3629 };
3630
3631 fn point_selection(
3632 selection: &Selection<Anchor>,
3633 buffer: &MultiBufferSnapshot,
3634 ) -> Selection<Point> {
3635 let start = selection.start.to_point(&buffer);
3636 let end = selection.end.to_point(&buffer);
3637 Selection {
3638 id: selection.id,
3639 start,
3640 end,
3641 reversed: selection.reversed,
3642 goal: selection.goal,
3643 }
3644 }
3645
3646 self.selections[start_ix..end_ix]
3647 .iter()
3648 .chain(
3649 self.pending_selection
3650 .as_ref()
3651 .map(|pending| &pending.selection),
3652 )
3653 .map(|s| point_selection(s, &buffer))
3654 .collect()
3655 }
3656
3657 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3658 where
3659 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3660 {
3661 let buffer = self.buffer.read(cx).snapshot(cx);
3662 let mut selections = self
3663 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3664 .peekable();
3665
3666 let mut pending_selection = self.pending_selection::<D>(&buffer);
3667
3668 iter::from_fn(move || {
3669 if let Some(pending) = pending_selection.as_mut() {
3670 while let Some(next_selection) = selections.peek() {
3671 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3672 let next_selection = selections.next().unwrap();
3673 if next_selection.start < pending.start {
3674 pending.start = next_selection.start;
3675 }
3676 if next_selection.end > pending.end {
3677 pending.end = next_selection.end;
3678 }
3679 } else if next_selection.end < pending.start {
3680 return selections.next();
3681 } else {
3682 break;
3683 }
3684 }
3685
3686 pending_selection.take()
3687 } else {
3688 selections.next()
3689 }
3690 })
3691 .collect()
3692 }
3693
3694 fn resolve_selections<'a, D, I>(
3695 &self,
3696 selections: I,
3697 snapshot: &MultiBufferSnapshot,
3698 ) -> impl 'a + Iterator<Item = Selection<D>>
3699 where
3700 D: TextDimension + Ord + Sub<D, Output = D>,
3701 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3702 {
3703 let (to_summarize, selections) = selections.into_iter().tee();
3704 let mut summaries = snapshot
3705 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3706 .into_iter();
3707 selections.map(move |s| Selection {
3708 id: s.id,
3709 start: summaries.next().unwrap(),
3710 end: summaries.next().unwrap(),
3711 reversed: s.reversed,
3712 goal: s.goal,
3713 })
3714 }
3715
3716 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3717 &self,
3718 snapshot: &MultiBufferSnapshot,
3719 ) -> Option<Selection<D>> {
3720 self.pending_selection
3721 .as_ref()
3722 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3723 }
3724
3725 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3726 &self,
3727 selection: &Selection<Anchor>,
3728 buffer: &MultiBufferSnapshot,
3729 ) -> Selection<D> {
3730 Selection {
3731 id: selection.id,
3732 start: selection.start.summary::<D>(&buffer),
3733 end: selection.end.summary::<D>(&buffer),
3734 reversed: selection.reversed,
3735 goal: selection.goal,
3736 }
3737 }
3738
3739 fn selection_count<'a>(&self) -> usize {
3740 let mut count = self.selections.len();
3741 if self.pending_selection.is_some() {
3742 count += 1;
3743 }
3744 count
3745 }
3746
3747 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3748 &self,
3749 snapshot: &MultiBufferSnapshot,
3750 ) -> Selection<D> {
3751 self.selections
3752 .iter()
3753 .min_by_key(|s| s.id)
3754 .map(|selection| self.resolve_selection(selection, snapshot))
3755 .or_else(|| self.pending_selection(snapshot))
3756 .unwrap()
3757 }
3758
3759 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3760 &self,
3761 snapshot: &MultiBufferSnapshot,
3762 ) -> Selection<D> {
3763 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3764 }
3765
3766 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3767 self.pending_selection
3768 .as_ref()
3769 .map(|s| &s.selection)
3770 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3771 }
3772
3773 pub fn update_selections<T>(
3774 &mut self,
3775 mut selections: Vec<Selection<T>>,
3776 autoscroll: Option<Autoscroll>,
3777 cx: &mut ViewContext<Self>,
3778 ) where
3779 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3780 {
3781 let buffer = self.buffer.read(cx).snapshot(cx);
3782 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3783 selections.sort_unstable_by_key(|s| s.start);
3784
3785 // Merge overlapping selections.
3786 let mut i = 1;
3787 while i < selections.len() {
3788 if selections[i - 1].end >= selections[i].start {
3789 let removed = selections.remove(i);
3790 if removed.start < selections[i - 1].start {
3791 selections[i - 1].start = removed.start;
3792 }
3793 if removed.end > selections[i - 1].end {
3794 selections[i - 1].end = removed.end;
3795 }
3796 } else {
3797 i += 1;
3798 }
3799 }
3800
3801 self.pending_selection = None;
3802 self.add_selections_state = None;
3803 self.select_next_state = None;
3804 self.select_larger_syntax_node_stack.clear();
3805 self.autoclose_stack.invalidate(&selections, &buffer);
3806 self.snippet_stack.invalidate(&selections, &buffer);
3807
3808 let new_cursor_position = selections.iter().max_by_key(|s| s.id).map(|s| s.head());
3809 if let Some(old_cursor_position) = old_cursor_position {
3810 if let Some(new_cursor_position) = new_cursor_position {
3811 self.push_to_nav_history(
3812 old_cursor_position,
3813 Some(new_cursor_position.to_point(&buffer)),
3814 cx,
3815 );
3816 }
3817 }
3818
3819 if let Some(autoscroll) = autoscroll {
3820 self.request_autoscroll(autoscroll, cx);
3821 }
3822 self.pause_cursor_blinking(cx);
3823
3824 self.set_selections(
3825 Arc::from_iter(selections.into_iter().map(|selection| {
3826 let end_bias = if selection.end > selection.start {
3827 Bias::Left
3828 } else {
3829 Bias::Right
3830 };
3831 Selection {
3832 id: selection.id,
3833 start: buffer.anchor_after(selection.start),
3834 end: buffer.anchor_at(selection.end, end_bias),
3835 reversed: selection.reversed,
3836 goal: selection.goal,
3837 }
3838 })),
3839 cx,
3840 );
3841
3842 if let Some((completion_state, cursor_position)) =
3843 self.completion_state.as_mut().zip(new_cursor_position)
3844 {
3845 let cursor_position = cursor_position.to_offset(&buffer);
3846 let (word_range, kind) =
3847 buffer.surrounding_word(completion_state.initial_position.clone());
3848 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
3849 {
3850 let query = Self::completion_query(&buffer, cursor_position);
3851 smol::block_on(completion_state.filter(query.as_deref(), cx.background().clone()));
3852 self.show_completions(&ShowCompletions, cx);
3853 } else {
3854 self.hide_completions(cx);
3855 }
3856 }
3857 }
3858
3859 /// Compute new ranges for any selections that were located in excerpts that have
3860 /// since been removed.
3861 ///
3862 /// Returns a `HashMap` indicating which selections whose former head position
3863 /// was no longer present. The keys of the map are selection ids. The values are
3864 /// the id of the new excerpt where the head of the selection has been moved.
3865 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3866 let snapshot = self.buffer.read(cx).read(cx);
3867 let anchors_with_status = snapshot.refresh_anchors(
3868 self.selections
3869 .iter()
3870 .flat_map(|selection| [&selection.start, &selection.end]),
3871 );
3872 let offsets =
3873 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3874 let offsets = offsets.chunks(2);
3875 let statuses = anchors_with_status
3876 .chunks(2)
3877 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3878
3879 let mut selections_with_lost_position = HashMap::default();
3880 let new_selections = offsets
3881 .zip(statuses)
3882 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3883 let selection = &self.selections[selection_ix];
3884 let kept_head = if selection.reversed {
3885 kept_start
3886 } else {
3887 kept_end
3888 };
3889 if !kept_head {
3890 selections_with_lost_position
3891 .insert(selection.id, selection.head().excerpt_id.clone());
3892 }
3893
3894 Selection {
3895 id: selection.id,
3896 start: offsets[0],
3897 end: offsets[1],
3898 reversed: selection.reversed,
3899 goal: selection.goal,
3900 }
3901 })
3902 .collect();
3903 drop(snapshot);
3904 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3905 selections_with_lost_position
3906 }
3907
3908 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3909 self.selections = selections;
3910 if self.focused {
3911 self.buffer.update(cx, |buffer, cx| {
3912 buffer.set_active_selections(&self.selections, cx)
3913 });
3914 }
3915 cx.emit(Event::SelectionsChanged);
3916 }
3917
3918 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3919 self.autoscroll_request = Some(autoscroll);
3920 cx.notify();
3921 }
3922
3923 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3924 self.start_transaction_at(Instant::now(), cx);
3925 }
3926
3927 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3928 self.end_selection(cx);
3929 if let Some(tx_id) = self
3930 .buffer
3931 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3932 {
3933 self.selection_history
3934 .insert(tx_id, (self.selections.clone(), None));
3935 }
3936 }
3937
3938 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3939 self.end_transaction_at(Instant::now(), cx);
3940 }
3941
3942 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3943 if let Some(tx_id) = self
3944 .buffer
3945 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3946 {
3947 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3948 *end_selections = Some(self.selections.clone());
3949 } else {
3950 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3951 }
3952 }
3953 }
3954
3955 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3956 log::info!("Editor::page_up");
3957 }
3958
3959 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3960 log::info!("Editor::page_down");
3961 }
3962
3963 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3964 let mut fold_ranges = Vec::new();
3965
3966 let selections = self.local_selections::<Point>(cx);
3967 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3968 for selection in selections {
3969 let range = selection.display_range(&display_map).sorted();
3970 let buffer_start_row = range.start.to_point(&display_map).row;
3971
3972 for row in (0..=range.end.row()).rev() {
3973 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3974 let fold_range = self.foldable_range_for_line(&display_map, row);
3975 if fold_range.end.row >= buffer_start_row {
3976 fold_ranges.push(fold_range);
3977 if row <= range.start.row() {
3978 break;
3979 }
3980 }
3981 }
3982 }
3983 }
3984
3985 self.fold_ranges(fold_ranges, cx);
3986 }
3987
3988 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3989 let selections = self.local_selections::<Point>(cx);
3990 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3991 let buffer = &display_map.buffer_snapshot;
3992 let ranges = selections
3993 .iter()
3994 .map(|s| {
3995 let range = s.display_range(&display_map).sorted();
3996 let mut start = range.start.to_point(&display_map);
3997 let mut end = range.end.to_point(&display_map);
3998 start.column = 0;
3999 end.column = buffer.line_len(end.row);
4000 start..end
4001 })
4002 .collect::<Vec<_>>();
4003 self.unfold_ranges(ranges, cx);
4004 }
4005
4006 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4007 let max_point = display_map.max_point();
4008 if display_row >= max_point.row() {
4009 false
4010 } else {
4011 let (start_indent, is_blank) = display_map.line_indent(display_row);
4012 if is_blank {
4013 false
4014 } else {
4015 for display_row in display_row + 1..=max_point.row() {
4016 let (indent, is_blank) = display_map.line_indent(display_row);
4017 if !is_blank {
4018 return indent > start_indent;
4019 }
4020 }
4021 false
4022 }
4023 }
4024 }
4025
4026 fn foldable_range_for_line(
4027 &self,
4028 display_map: &DisplaySnapshot,
4029 start_row: u32,
4030 ) -> Range<Point> {
4031 let max_point = display_map.max_point();
4032
4033 let (start_indent, _) = display_map.line_indent(start_row);
4034 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4035 let mut end = None;
4036 for row in start_row + 1..=max_point.row() {
4037 let (indent, is_blank) = display_map.line_indent(row);
4038 if !is_blank && indent <= start_indent {
4039 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4040 break;
4041 }
4042 }
4043
4044 let end = end.unwrap_or(max_point);
4045 return start.to_point(display_map)..end.to_point(display_map);
4046 }
4047
4048 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4049 let selections = self.local_selections::<Point>(cx);
4050 let ranges = selections.into_iter().map(|s| s.start..s.end);
4051 self.fold_ranges(ranges, cx);
4052 }
4053
4054 fn fold_ranges<T: ToOffset>(
4055 &mut self,
4056 ranges: impl IntoIterator<Item = Range<T>>,
4057 cx: &mut ViewContext<Self>,
4058 ) {
4059 let mut ranges = ranges.into_iter().peekable();
4060 if ranges.peek().is_some() {
4061 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4062 self.request_autoscroll(Autoscroll::Fit, cx);
4063 cx.notify();
4064 }
4065 }
4066
4067 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4068 if !ranges.is_empty() {
4069 self.display_map
4070 .update(cx, |map, cx| map.unfold(ranges, cx));
4071 self.request_autoscroll(Autoscroll::Fit, cx);
4072 cx.notify();
4073 }
4074 }
4075
4076 pub fn insert_blocks(
4077 &mut self,
4078 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4079 cx: &mut ViewContext<Self>,
4080 ) -> Vec<BlockId> {
4081 let blocks = self
4082 .display_map
4083 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4084 self.request_autoscroll(Autoscroll::Fit, cx);
4085 blocks
4086 }
4087
4088 pub fn replace_blocks(
4089 &mut self,
4090 blocks: HashMap<BlockId, RenderBlock>,
4091 cx: &mut ViewContext<Self>,
4092 ) {
4093 self.display_map
4094 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4095 self.request_autoscroll(Autoscroll::Fit, cx);
4096 }
4097
4098 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4099 self.display_map.update(cx, |display_map, cx| {
4100 display_map.remove_blocks(block_ids, cx)
4101 });
4102 }
4103
4104 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4105 self.display_map
4106 .update(cx, |map, cx| map.snapshot(cx))
4107 .longest_row()
4108 }
4109
4110 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4111 self.display_map
4112 .update(cx, |map, cx| map.snapshot(cx))
4113 .max_point()
4114 }
4115
4116 pub fn text(&self, cx: &AppContext) -> String {
4117 self.buffer.read(cx).read(cx).text()
4118 }
4119
4120 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4121 self.display_map
4122 .update(cx, |map, cx| map.snapshot(cx))
4123 .text()
4124 }
4125
4126 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4127 self.display_map
4128 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4129 }
4130
4131 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4132 self.highlighted_rows = rows;
4133 }
4134
4135 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4136 self.highlighted_rows.clone()
4137 }
4138
4139 pub fn highlight_ranges<T: 'static>(
4140 &mut self,
4141 ranges: Vec<Range<Anchor>>,
4142 color: Color,
4143 cx: &mut ViewContext<Self>,
4144 ) {
4145 self.highlighted_ranges
4146 .insert(TypeId::of::<T>(), (color, ranges));
4147 cx.notify();
4148 }
4149
4150 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4151 self.highlighted_ranges.remove(&TypeId::of::<T>());
4152 cx.notify();
4153 }
4154
4155 #[cfg(feature = "test-support")]
4156 pub fn all_highlighted_ranges(
4157 &mut self,
4158 cx: &mut ViewContext<Self>,
4159 ) -> Vec<(Range<DisplayPoint>, Color)> {
4160 let snapshot = self.snapshot(cx);
4161 let buffer = &snapshot.buffer_snapshot;
4162 let start = buffer.anchor_before(0);
4163 let end = buffer.anchor_after(buffer.len());
4164 self.highlighted_ranges_in_range(start..end, &snapshot)
4165 }
4166
4167 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4168 self.highlighted_ranges
4169 .get(&TypeId::of::<T>())
4170 .map(|(color, ranges)| (*color, ranges.as_slice()))
4171 }
4172
4173 pub fn highlighted_ranges_in_range(
4174 &self,
4175 search_range: Range<Anchor>,
4176 display_snapshot: &DisplaySnapshot,
4177 ) -> Vec<(Range<DisplayPoint>, Color)> {
4178 let mut results = Vec::new();
4179 let buffer = &display_snapshot.buffer_snapshot;
4180 for (color, ranges) in self.highlighted_ranges.values() {
4181 let start_ix = match ranges.binary_search_by(|probe| {
4182 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4183 if cmp.is_gt() {
4184 Ordering::Greater
4185 } else {
4186 Ordering::Less
4187 }
4188 }) {
4189 Ok(i) | Err(i) => i,
4190 };
4191 for range in &ranges[start_ix..] {
4192 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4193 break;
4194 }
4195 let start = range
4196 .start
4197 .to_point(buffer)
4198 .to_display_point(display_snapshot);
4199 let end = range
4200 .end
4201 .to_point(buffer)
4202 .to_display_point(display_snapshot);
4203 results.push((start..end, *color))
4204 }
4205 }
4206 results
4207 }
4208
4209 fn next_blink_epoch(&mut self) -> usize {
4210 self.blink_epoch += 1;
4211 self.blink_epoch
4212 }
4213
4214 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4215 if !self.focused {
4216 return;
4217 }
4218
4219 self.show_local_cursors = true;
4220 cx.notify();
4221
4222 let epoch = self.next_blink_epoch();
4223 cx.spawn(|this, mut cx| {
4224 let this = this.downgrade();
4225 async move {
4226 Timer::after(CURSOR_BLINK_INTERVAL).await;
4227 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4228 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4229 }
4230 }
4231 })
4232 .detach();
4233 }
4234
4235 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4236 if epoch == self.blink_epoch {
4237 self.blinking_paused = false;
4238 self.blink_cursors(epoch, cx);
4239 }
4240 }
4241
4242 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4243 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4244 self.show_local_cursors = !self.show_local_cursors;
4245 cx.notify();
4246
4247 let epoch = self.next_blink_epoch();
4248 cx.spawn(|this, mut cx| {
4249 let this = this.downgrade();
4250 async move {
4251 Timer::after(CURSOR_BLINK_INTERVAL).await;
4252 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4253 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4254 }
4255 }
4256 })
4257 .detach();
4258 }
4259 }
4260
4261 pub fn show_local_cursors(&self) -> bool {
4262 self.show_local_cursors
4263 }
4264
4265 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4266 self.refresh_active_diagnostics(cx);
4267 cx.notify();
4268 }
4269
4270 fn on_buffer_event(
4271 &mut self,
4272 _: ModelHandle<MultiBuffer>,
4273 event: &language::Event,
4274 cx: &mut ViewContext<Self>,
4275 ) {
4276 match event {
4277 language::Event::Edited => cx.emit(Event::Edited),
4278 language::Event::Dirtied => cx.emit(Event::Dirtied),
4279 language::Event::Saved => cx.emit(Event::Saved),
4280 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4281 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4282 language::Event::Closed => cx.emit(Event::Closed),
4283 _ => {}
4284 }
4285 }
4286
4287 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4288 cx.notify();
4289 }
4290}
4291
4292impl EditorSnapshot {
4293 pub fn is_focused(&self) -> bool {
4294 self.is_focused
4295 }
4296
4297 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4298 self.placeholder_text.as_ref()
4299 }
4300
4301 pub fn scroll_position(&self) -> Vector2F {
4302 compute_scroll_position(
4303 &self.display_snapshot,
4304 self.scroll_position,
4305 &self.scroll_top_anchor,
4306 )
4307 }
4308}
4309
4310impl Deref for EditorSnapshot {
4311 type Target = DisplaySnapshot;
4312
4313 fn deref(&self) -> &Self::Target {
4314 &self.display_snapshot
4315 }
4316}
4317
4318impl EditorSettings {
4319 #[cfg(any(test, feature = "test-support"))]
4320 pub fn test(cx: &AppContext) -> Self {
4321 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4322
4323 Self {
4324 tab_size: 4,
4325 soft_wrap: SoftWrap::None,
4326 style: {
4327 let font_cache: &gpui::FontCache = cx.font_cache();
4328 let font_family_name = Arc::from("Monaco");
4329 let font_properties = Default::default();
4330 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4331 let font_id = font_cache
4332 .select_font(font_family_id, &font_properties)
4333 .unwrap();
4334 let text = gpui::fonts::TextStyle {
4335 font_family_name,
4336 font_family_id,
4337 font_id,
4338 font_size: 14.,
4339 color: gpui::color::Color::from_u32(0xff0000ff),
4340 font_properties,
4341 underline: None,
4342 };
4343 let default_diagnostic_style = DiagnosticStyle {
4344 message: text.clone().into(),
4345 header: Default::default(),
4346 text_scale_factor: 1.,
4347 };
4348 EditorStyle {
4349 text: text.clone(),
4350 placeholder_text: None,
4351 background: Default::default(),
4352 gutter_background: Default::default(),
4353 gutter_padding_factor: 2.,
4354 active_line_background: Default::default(),
4355 highlighted_line_background: Default::default(),
4356 line_number: Default::default(),
4357 line_number_active: Default::default(),
4358 selection: Default::default(),
4359 guest_selections: Default::default(),
4360 syntax: Default::default(),
4361 diagnostic_path_header: DiagnosticPathHeader {
4362 container: Default::default(),
4363 filename: ContainedText {
4364 container: Default::default(),
4365 text: text.clone(),
4366 },
4367 path: ContainedText {
4368 container: Default::default(),
4369 text: text.clone(),
4370 },
4371 text_scale_factor: 1.,
4372 },
4373 diagnostic_header: DiagnosticHeader {
4374 container: Default::default(),
4375 message: ContainedLabel {
4376 container: Default::default(),
4377 label: text.clone().into(),
4378 },
4379 code: ContainedText {
4380 container: Default::default(),
4381 text: text.clone(),
4382 },
4383 icon_width_factor: 1.,
4384 text_scale_factor: 1.,
4385 },
4386 error_diagnostic: default_diagnostic_style.clone(),
4387 invalid_error_diagnostic: default_diagnostic_style.clone(),
4388 warning_diagnostic: default_diagnostic_style.clone(),
4389 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4390 information_diagnostic: default_diagnostic_style.clone(),
4391 invalid_information_diagnostic: default_diagnostic_style.clone(),
4392 hint_diagnostic: default_diagnostic_style.clone(),
4393 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4394 autocomplete: Default::default(),
4395 }
4396 },
4397 }
4398 }
4399}
4400
4401fn compute_scroll_position(
4402 snapshot: &DisplaySnapshot,
4403 mut scroll_position: Vector2F,
4404 scroll_top_anchor: &Option<Anchor>,
4405) -> Vector2F {
4406 if let Some(anchor) = scroll_top_anchor {
4407 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4408 scroll_position.set_y(scroll_top + scroll_position.y());
4409 } else {
4410 scroll_position.set_y(0.);
4411 }
4412 scroll_position
4413}
4414
4415#[derive(Copy, Clone)]
4416pub enum Event {
4417 Activate,
4418 Edited,
4419 Blurred,
4420 Dirtied,
4421 Saved,
4422 TitleChanged,
4423 SelectionsChanged,
4424 Closed,
4425}
4426
4427impl Entity for Editor {
4428 type Event = Event;
4429}
4430
4431impl View for Editor {
4432 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4433 let settings = (self.build_settings)(cx);
4434 self.display_map.update(cx, |map, cx| {
4435 map.set_font(
4436 settings.style.text.font_id,
4437 settings.style.text.font_size,
4438 cx,
4439 )
4440 });
4441 EditorElement::new(self.handle.clone(), settings).boxed()
4442 }
4443
4444 fn ui_name() -> &'static str {
4445 "Editor"
4446 }
4447
4448 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4449 self.focused = true;
4450 self.blink_cursors(self.blink_epoch, cx);
4451 self.buffer.update(cx, |buffer, cx| {
4452 buffer.avoid_grouping_next_transaction(cx);
4453 buffer.set_active_selections(&self.selections, cx)
4454 });
4455 }
4456
4457 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4458 self.focused = false;
4459 self.show_local_cursors = false;
4460 self.buffer
4461 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4462 self.hide_completions(cx);
4463 cx.emit(Event::Blurred);
4464 cx.notify();
4465 }
4466
4467 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4468 let mut cx = Self::default_keymap_context();
4469 let mode = match self.mode {
4470 EditorMode::SingleLine => "single_line",
4471 EditorMode::AutoHeight { .. } => "auto_height",
4472 EditorMode::Full => "full",
4473 };
4474 cx.map.insert("mode".into(), mode.into());
4475 if self.completion_state.is_some() {
4476 cx.set.insert("completing".into());
4477 }
4478 cx
4479 }
4480}
4481
4482impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4483 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4484 let start = self.start.to_point(buffer);
4485 let end = self.end.to_point(buffer);
4486 if self.reversed {
4487 end..start
4488 } else {
4489 start..end
4490 }
4491 }
4492
4493 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4494 let start = self.start.to_offset(buffer);
4495 let end = self.end.to_offset(buffer);
4496 if self.reversed {
4497 end..start
4498 } else {
4499 start..end
4500 }
4501 }
4502
4503 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4504 let start = self
4505 .start
4506 .to_point(&map.buffer_snapshot)
4507 .to_display_point(map);
4508 let end = self
4509 .end
4510 .to_point(&map.buffer_snapshot)
4511 .to_display_point(map);
4512 if self.reversed {
4513 end..start
4514 } else {
4515 start..end
4516 }
4517 }
4518
4519 fn spanned_rows(
4520 &self,
4521 include_end_if_at_line_start: bool,
4522 map: &DisplaySnapshot,
4523 ) -> Range<u32> {
4524 let start = self.start.to_point(&map.buffer_snapshot);
4525 let mut end = self.end.to_point(&map.buffer_snapshot);
4526 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4527 end.row -= 1;
4528 }
4529
4530 let buffer_start = map.prev_line_boundary(start).0;
4531 let buffer_end = map.next_line_boundary(end).0;
4532 buffer_start.row..buffer_end.row + 1
4533 }
4534}
4535
4536impl<T: InvalidationRegion> InvalidationStack<T> {
4537 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4538 where
4539 S: Clone + ToOffset,
4540 {
4541 while let Some(region) = self.last() {
4542 let all_selections_inside_invalidation_ranges =
4543 if selections.len() == region.ranges().len() {
4544 selections
4545 .iter()
4546 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4547 .all(|(selection, invalidation_range)| {
4548 let head = selection.head().to_offset(&buffer);
4549 invalidation_range.start <= head && invalidation_range.end >= head
4550 })
4551 } else {
4552 false
4553 };
4554
4555 if all_selections_inside_invalidation_ranges {
4556 break;
4557 } else {
4558 self.pop();
4559 }
4560 }
4561 }
4562}
4563
4564impl<T> Default for InvalidationStack<T> {
4565 fn default() -> Self {
4566 Self(Default::default())
4567 }
4568}
4569
4570impl<T> Deref for InvalidationStack<T> {
4571 type Target = Vec<T>;
4572
4573 fn deref(&self) -> &Self::Target {
4574 &self.0
4575 }
4576}
4577
4578impl<T> DerefMut for InvalidationStack<T> {
4579 fn deref_mut(&mut self) -> &mut Self::Target {
4580 &mut self.0
4581 }
4582}
4583
4584impl InvalidationRegion for BracketPairState {
4585 fn ranges(&self) -> &[Range<Anchor>] {
4586 &self.ranges
4587 }
4588}
4589
4590impl InvalidationRegion for SnippetState {
4591 fn ranges(&self) -> &[Range<Anchor>] {
4592 &self.ranges[self.active_index]
4593 }
4594}
4595
4596pub fn diagnostic_block_renderer(
4597 diagnostic: Diagnostic,
4598 is_valid: bool,
4599 build_settings: BuildSettings,
4600) -> RenderBlock {
4601 let mut highlighted_lines = Vec::new();
4602 for line in diagnostic.message.lines() {
4603 highlighted_lines.push(highlight_diagnostic_message(line));
4604 }
4605
4606 Arc::new(move |cx: &BlockContext| {
4607 let settings = build_settings(cx);
4608 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4609 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4610 Flex::column()
4611 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4612 Label::new(
4613 line.clone(),
4614 style.message.clone().with_font_size(font_size),
4615 )
4616 .with_highlights(highlights.clone())
4617 .contained()
4618 .with_margin_left(cx.anchor_x)
4619 .boxed()
4620 }))
4621 .aligned()
4622 .left()
4623 .boxed()
4624 })
4625}
4626
4627pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4628 let mut message_without_backticks = String::new();
4629 let mut prev_offset = 0;
4630 let mut inside_block = false;
4631 let mut highlights = Vec::new();
4632 for (match_ix, (offset, _)) in message
4633 .match_indices('`')
4634 .chain([(message.len(), "")])
4635 .enumerate()
4636 {
4637 message_without_backticks.push_str(&message[prev_offset..offset]);
4638 if inside_block {
4639 highlights.extend(prev_offset - match_ix..offset - match_ix);
4640 }
4641
4642 inside_block = !inside_block;
4643 prev_offset = offset + 1;
4644 }
4645
4646 (message_without_backticks, highlights)
4647}
4648
4649pub fn diagnostic_style(
4650 severity: DiagnosticSeverity,
4651 valid: bool,
4652 style: &EditorStyle,
4653) -> DiagnosticStyle {
4654 match (severity, valid) {
4655 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4656 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4657 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4658 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4659 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4660 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4661 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4662 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4663 _ => DiagnosticStyle {
4664 message: style.text.clone().into(),
4665 header: Default::default(),
4666 text_scale_factor: 1.,
4667 },
4668 }
4669}
4670
4671pub fn settings_builder(
4672 buffer: WeakModelHandle<MultiBuffer>,
4673 settings: watch::Receiver<workspace::Settings>,
4674) -> BuildSettings {
4675 Arc::new(move |cx| {
4676 let settings = settings.borrow();
4677 let font_cache = cx.font_cache();
4678 let font_family_id = settings.buffer_font_family;
4679 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4680 let font_properties = Default::default();
4681 let font_id = font_cache
4682 .select_font(font_family_id, &font_properties)
4683 .unwrap();
4684 let font_size = settings.buffer_font_size;
4685
4686 let mut theme = settings.theme.editor.clone();
4687 theme.text = TextStyle {
4688 color: theme.text.color,
4689 font_family_name,
4690 font_family_id,
4691 font_id,
4692 font_size,
4693 font_properties,
4694 underline: None,
4695 };
4696 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4697 let soft_wrap = match settings.soft_wrap(language) {
4698 workspace::settings::SoftWrap::None => SoftWrap::None,
4699 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4700 workspace::settings::SoftWrap::PreferredLineLength => {
4701 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4702 }
4703 };
4704
4705 EditorSettings {
4706 tab_size: settings.tab_size,
4707 soft_wrap,
4708 style: theme,
4709 }
4710 })
4711}
4712
4713pub fn combine_syntax_and_fuzzy_match_highlights(
4714 text: &str,
4715 default_style: HighlightStyle,
4716 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4717 match_indices: &[usize],
4718) -> Vec<(Range<usize>, HighlightStyle)> {
4719 let mut result = Vec::new();
4720 let mut match_indices = match_indices.iter().copied().peekable();
4721
4722 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4723 {
4724 syntax_highlight.font_properties.weight(Default::default());
4725
4726 // Add highlights for any fuzzy match characters before the next
4727 // syntax highlight range.
4728 while let Some(&match_index) = match_indices.peek() {
4729 if match_index >= range.start {
4730 break;
4731 }
4732 match_indices.next();
4733 let end_index = char_ix_after(match_index, text);
4734 let mut match_style = default_style;
4735 match_style.font_properties.weight(fonts::Weight::BOLD);
4736 result.push((match_index..end_index, match_style));
4737 }
4738
4739 if range.start == usize::MAX {
4740 break;
4741 }
4742
4743 // Add highlights for any fuzzy match characters within the
4744 // syntax highlight range.
4745 let mut offset = range.start;
4746 while let Some(&match_index) = match_indices.peek() {
4747 if match_index >= range.end {
4748 break;
4749 }
4750
4751 match_indices.next();
4752 if match_index > offset {
4753 result.push((offset..match_index, syntax_highlight));
4754 }
4755
4756 let mut end_index = char_ix_after(match_index, text);
4757 while let Some(&next_match_index) = match_indices.peek() {
4758 if next_match_index == end_index && next_match_index < range.end {
4759 end_index = char_ix_after(next_match_index, text);
4760 match_indices.next();
4761 } else {
4762 break;
4763 }
4764 }
4765
4766 let mut match_style = syntax_highlight;
4767 match_style.font_properties.weight(fonts::Weight::BOLD);
4768 result.push((match_index..end_index, match_style));
4769 offset = end_index;
4770 }
4771
4772 if offset < range.end {
4773 result.push((offset..range.end, syntax_highlight));
4774 }
4775 }
4776
4777 fn char_ix_after(ix: usize, text: &str) -> usize {
4778 ix + text[ix..].chars().next().unwrap().len_utf8()
4779 }
4780
4781 result
4782}
4783
4784#[cfg(test)]
4785mod tests {
4786 use super::*;
4787 use language::{FakeFile, LanguageConfig};
4788 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4789 use text::Point;
4790 use unindent::Unindent;
4791 use util::test::sample_text;
4792
4793 #[gpui::test]
4794 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4795 let mut now = Instant::now();
4796 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4797 let group_interval = buffer.read(cx).transaction_group_interval();
4798 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4799 let settings = EditorSettings::test(cx);
4800 let (_, editor) = cx.add_window(Default::default(), |cx| {
4801 build_editor(buffer.clone(), settings, cx)
4802 });
4803
4804 editor.update(cx, |editor, cx| {
4805 editor.start_transaction_at(now, cx);
4806 editor.select_ranges([2..4], None, cx);
4807 editor.insert("cd", cx);
4808 editor.end_transaction_at(now, cx);
4809 assert_eq!(editor.text(cx), "12cd56");
4810 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4811
4812 editor.start_transaction_at(now, cx);
4813 editor.select_ranges([4..5], None, cx);
4814 editor.insert("e", cx);
4815 editor.end_transaction_at(now, cx);
4816 assert_eq!(editor.text(cx), "12cde6");
4817 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4818
4819 now += group_interval + Duration::from_millis(1);
4820 editor.select_ranges([2..2], None, cx);
4821
4822 // Simulate an edit in another editor
4823 buffer.update(cx, |buffer, cx| {
4824 buffer.start_transaction_at(now, cx);
4825 buffer.edit([0..1], "a", cx);
4826 buffer.edit([1..1], "b", cx);
4827 buffer.end_transaction_at(now, cx);
4828 });
4829
4830 assert_eq!(editor.text(cx), "ab2cde6");
4831 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4832
4833 // Last transaction happened past the group interval in a different editor.
4834 // Undo it individually and don't restore selections.
4835 editor.undo(&Undo, cx);
4836 assert_eq!(editor.text(cx), "12cde6");
4837 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4838
4839 // First two transactions happened within the group interval in this editor.
4840 // Undo them together and restore selections.
4841 editor.undo(&Undo, cx);
4842 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4843 assert_eq!(editor.text(cx), "123456");
4844 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4845
4846 // Redo the first two transactions together.
4847 editor.redo(&Redo, cx);
4848 assert_eq!(editor.text(cx), "12cde6");
4849 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4850
4851 // Redo the last transaction on its own.
4852 editor.redo(&Redo, cx);
4853 assert_eq!(editor.text(cx), "ab2cde6");
4854 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4855
4856 // Test empty transactions.
4857 editor.start_transaction_at(now, cx);
4858 editor.end_transaction_at(now, cx);
4859 editor.undo(&Undo, cx);
4860 assert_eq!(editor.text(cx), "12cde6");
4861 });
4862 }
4863
4864 #[gpui::test]
4865 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4866 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4867 let settings = EditorSettings::test(cx);
4868 let (_, editor) =
4869 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4870
4871 editor.update(cx, |view, cx| {
4872 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4873 });
4874
4875 assert_eq!(
4876 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4877 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4878 );
4879
4880 editor.update(cx, |view, cx| {
4881 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4882 });
4883
4884 assert_eq!(
4885 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4886 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4887 );
4888
4889 editor.update(cx, |view, cx| {
4890 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4891 });
4892
4893 assert_eq!(
4894 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4895 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4896 );
4897
4898 editor.update(cx, |view, cx| {
4899 view.end_selection(cx);
4900 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4901 });
4902
4903 assert_eq!(
4904 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4905 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4906 );
4907
4908 editor.update(cx, |view, cx| {
4909 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4910 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4911 });
4912
4913 assert_eq!(
4914 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4915 [
4916 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4917 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4918 ]
4919 );
4920
4921 editor.update(cx, |view, cx| {
4922 view.end_selection(cx);
4923 });
4924
4925 assert_eq!(
4926 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4927 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4928 );
4929 }
4930
4931 #[gpui::test]
4932 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4933 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4934 let settings = EditorSettings::test(cx);
4935 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4936
4937 view.update(cx, |view, cx| {
4938 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4939 assert_eq!(
4940 view.selected_display_ranges(cx),
4941 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4942 );
4943 });
4944
4945 view.update(cx, |view, cx| {
4946 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4947 assert_eq!(
4948 view.selected_display_ranges(cx),
4949 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4950 );
4951 });
4952
4953 view.update(cx, |view, cx| {
4954 view.cancel(&Cancel, cx);
4955 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4956 assert_eq!(
4957 view.selected_display_ranges(cx),
4958 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4959 );
4960 });
4961 }
4962
4963 #[gpui::test]
4964 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4965 cx.add_window(Default::default(), |cx| {
4966 use workspace::ItemView;
4967 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4968 let settings = EditorSettings::test(&cx);
4969 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4970 let mut editor = build_editor(buffer.clone(), settings, cx);
4971 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4972
4973 // Move the cursor a small distance.
4974 // Nothing is added to the navigation history.
4975 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4976 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4977 assert!(nav_history.borrow_mut().pop_backward().is_none());
4978
4979 // Move the cursor a large distance.
4980 // The history can jump back to the previous position.
4981 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4982 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4983 editor.navigate(nav_entry.data.unwrap(), cx);
4984 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4985 assert_eq!(
4986 editor.selected_display_ranges(cx),
4987 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4988 );
4989
4990 // Move the cursor a small distance via the mouse.
4991 // Nothing is added to the navigation history.
4992 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4993 editor.end_selection(cx);
4994 assert_eq!(
4995 editor.selected_display_ranges(cx),
4996 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4997 );
4998 assert!(nav_history.borrow_mut().pop_backward().is_none());
4999
5000 // Move the cursor a large distance via the mouse.
5001 // The history can jump back to the previous position.
5002 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5003 editor.end_selection(cx);
5004 assert_eq!(
5005 editor.selected_display_ranges(cx),
5006 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5007 );
5008 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5009 editor.navigate(nav_entry.data.unwrap(), cx);
5010 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5011 assert_eq!(
5012 editor.selected_display_ranges(cx),
5013 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5014 );
5015
5016 editor
5017 });
5018 }
5019
5020 #[gpui::test]
5021 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5022 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5023 let settings = EditorSettings::test(cx);
5024 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5025
5026 view.update(cx, |view, cx| {
5027 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5028 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5029 view.end_selection(cx);
5030
5031 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5032 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5033 view.end_selection(cx);
5034 assert_eq!(
5035 view.selected_display_ranges(cx),
5036 [
5037 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5038 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5039 ]
5040 );
5041 });
5042
5043 view.update(cx, |view, cx| {
5044 view.cancel(&Cancel, cx);
5045 assert_eq!(
5046 view.selected_display_ranges(cx),
5047 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5048 );
5049 });
5050
5051 view.update(cx, |view, cx| {
5052 view.cancel(&Cancel, cx);
5053 assert_eq!(
5054 view.selected_display_ranges(cx),
5055 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5056 );
5057 });
5058 }
5059
5060 #[gpui::test]
5061 fn test_fold(cx: &mut gpui::MutableAppContext) {
5062 let buffer = MultiBuffer::build_simple(
5063 &"
5064 impl Foo {
5065 // Hello!
5066
5067 fn a() {
5068 1
5069 }
5070
5071 fn b() {
5072 2
5073 }
5074
5075 fn c() {
5076 3
5077 }
5078 }
5079 "
5080 .unindent(),
5081 cx,
5082 );
5083 let settings = EditorSettings::test(&cx);
5084 let (_, view) = cx.add_window(Default::default(), |cx| {
5085 build_editor(buffer.clone(), settings, cx)
5086 });
5087
5088 view.update(cx, |view, cx| {
5089 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5090 view.fold(&Fold, cx);
5091 assert_eq!(
5092 view.display_text(cx),
5093 "
5094 impl Foo {
5095 // Hello!
5096
5097 fn a() {
5098 1
5099 }
5100
5101 fn b() {…
5102 }
5103
5104 fn c() {…
5105 }
5106 }
5107 "
5108 .unindent(),
5109 );
5110
5111 view.fold(&Fold, cx);
5112 assert_eq!(
5113 view.display_text(cx),
5114 "
5115 impl Foo {…
5116 }
5117 "
5118 .unindent(),
5119 );
5120
5121 view.unfold(&Unfold, cx);
5122 assert_eq!(
5123 view.display_text(cx),
5124 "
5125 impl Foo {
5126 // Hello!
5127
5128 fn a() {
5129 1
5130 }
5131
5132 fn b() {…
5133 }
5134
5135 fn c() {…
5136 }
5137 }
5138 "
5139 .unindent(),
5140 );
5141
5142 view.unfold(&Unfold, cx);
5143 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5144 });
5145 }
5146
5147 #[gpui::test]
5148 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5149 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5150 let settings = EditorSettings::test(&cx);
5151 let (_, view) = cx.add_window(Default::default(), |cx| {
5152 build_editor(buffer.clone(), settings, cx)
5153 });
5154
5155 buffer.update(cx, |buffer, cx| {
5156 buffer.edit(
5157 vec![
5158 Point::new(1, 0)..Point::new(1, 0),
5159 Point::new(1, 1)..Point::new(1, 1),
5160 ],
5161 "\t",
5162 cx,
5163 );
5164 });
5165
5166 view.update(cx, |view, cx| {
5167 assert_eq!(
5168 view.selected_display_ranges(cx),
5169 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5170 );
5171
5172 view.move_down(&MoveDown, cx);
5173 assert_eq!(
5174 view.selected_display_ranges(cx),
5175 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5176 );
5177
5178 view.move_right(&MoveRight, cx);
5179 assert_eq!(
5180 view.selected_display_ranges(cx),
5181 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5182 );
5183
5184 view.move_left(&MoveLeft, cx);
5185 assert_eq!(
5186 view.selected_display_ranges(cx),
5187 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5188 );
5189
5190 view.move_up(&MoveUp, cx);
5191 assert_eq!(
5192 view.selected_display_ranges(cx),
5193 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5194 );
5195
5196 view.move_to_end(&MoveToEnd, cx);
5197 assert_eq!(
5198 view.selected_display_ranges(cx),
5199 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5200 );
5201
5202 view.move_to_beginning(&MoveToBeginning, cx);
5203 assert_eq!(
5204 view.selected_display_ranges(cx),
5205 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5206 );
5207
5208 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5209 view.select_to_beginning(&SelectToBeginning, cx);
5210 assert_eq!(
5211 view.selected_display_ranges(cx),
5212 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5213 );
5214
5215 view.select_to_end(&SelectToEnd, cx);
5216 assert_eq!(
5217 view.selected_display_ranges(cx),
5218 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5219 );
5220 });
5221 }
5222
5223 #[gpui::test]
5224 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5225 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5226 let settings = EditorSettings::test(&cx);
5227 let (_, view) = cx.add_window(Default::default(), |cx| {
5228 build_editor(buffer.clone(), settings, cx)
5229 });
5230
5231 assert_eq!('ⓐ'.len_utf8(), 3);
5232 assert_eq!('α'.len_utf8(), 2);
5233
5234 view.update(cx, |view, cx| {
5235 view.fold_ranges(
5236 vec![
5237 Point::new(0, 6)..Point::new(0, 12),
5238 Point::new(1, 2)..Point::new(1, 4),
5239 Point::new(2, 4)..Point::new(2, 8),
5240 ],
5241 cx,
5242 );
5243 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5244
5245 view.move_right(&MoveRight, cx);
5246 assert_eq!(
5247 view.selected_display_ranges(cx),
5248 &[empty_range(0, "ⓐ".len())]
5249 );
5250 view.move_right(&MoveRight, cx);
5251 assert_eq!(
5252 view.selected_display_ranges(cx),
5253 &[empty_range(0, "ⓐⓑ".len())]
5254 );
5255 view.move_right(&MoveRight, cx);
5256 assert_eq!(
5257 view.selected_display_ranges(cx),
5258 &[empty_range(0, "ⓐⓑ…".len())]
5259 );
5260
5261 view.move_down(&MoveDown, cx);
5262 assert_eq!(
5263 view.selected_display_ranges(cx),
5264 &[empty_range(1, "ab…".len())]
5265 );
5266 view.move_left(&MoveLeft, cx);
5267 assert_eq!(
5268 view.selected_display_ranges(cx),
5269 &[empty_range(1, "ab".len())]
5270 );
5271 view.move_left(&MoveLeft, cx);
5272 assert_eq!(
5273 view.selected_display_ranges(cx),
5274 &[empty_range(1, "a".len())]
5275 );
5276
5277 view.move_down(&MoveDown, cx);
5278 assert_eq!(
5279 view.selected_display_ranges(cx),
5280 &[empty_range(2, "α".len())]
5281 );
5282 view.move_right(&MoveRight, cx);
5283 assert_eq!(
5284 view.selected_display_ranges(cx),
5285 &[empty_range(2, "αβ".len())]
5286 );
5287 view.move_right(&MoveRight, cx);
5288 assert_eq!(
5289 view.selected_display_ranges(cx),
5290 &[empty_range(2, "αβ…".len())]
5291 );
5292 view.move_right(&MoveRight, cx);
5293 assert_eq!(
5294 view.selected_display_ranges(cx),
5295 &[empty_range(2, "αβ…ε".len())]
5296 );
5297
5298 view.move_up(&MoveUp, cx);
5299 assert_eq!(
5300 view.selected_display_ranges(cx),
5301 &[empty_range(1, "ab…e".len())]
5302 );
5303 view.move_up(&MoveUp, cx);
5304 assert_eq!(
5305 view.selected_display_ranges(cx),
5306 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5307 );
5308 view.move_left(&MoveLeft, cx);
5309 assert_eq!(
5310 view.selected_display_ranges(cx),
5311 &[empty_range(0, "ⓐⓑ…".len())]
5312 );
5313 view.move_left(&MoveLeft, cx);
5314 assert_eq!(
5315 view.selected_display_ranges(cx),
5316 &[empty_range(0, "ⓐⓑ".len())]
5317 );
5318 view.move_left(&MoveLeft, cx);
5319 assert_eq!(
5320 view.selected_display_ranges(cx),
5321 &[empty_range(0, "ⓐ".len())]
5322 );
5323 });
5324 }
5325
5326 #[gpui::test]
5327 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5328 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5329 let settings = EditorSettings::test(&cx);
5330 let (_, view) = cx.add_window(Default::default(), |cx| {
5331 build_editor(buffer.clone(), settings, cx)
5332 });
5333 view.update(cx, |view, cx| {
5334 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5335 view.move_down(&MoveDown, cx);
5336 assert_eq!(
5337 view.selected_display_ranges(cx),
5338 &[empty_range(1, "abcd".len())]
5339 );
5340
5341 view.move_down(&MoveDown, cx);
5342 assert_eq!(
5343 view.selected_display_ranges(cx),
5344 &[empty_range(2, "αβγ".len())]
5345 );
5346
5347 view.move_down(&MoveDown, cx);
5348 assert_eq!(
5349 view.selected_display_ranges(cx),
5350 &[empty_range(3, "abcd".len())]
5351 );
5352
5353 view.move_down(&MoveDown, cx);
5354 assert_eq!(
5355 view.selected_display_ranges(cx),
5356 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5357 );
5358
5359 view.move_up(&MoveUp, cx);
5360 assert_eq!(
5361 view.selected_display_ranges(cx),
5362 &[empty_range(3, "abcd".len())]
5363 );
5364
5365 view.move_up(&MoveUp, cx);
5366 assert_eq!(
5367 view.selected_display_ranges(cx),
5368 &[empty_range(2, "αβγ".len())]
5369 );
5370 });
5371 }
5372
5373 #[gpui::test]
5374 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5375 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5376 let settings = EditorSettings::test(&cx);
5377 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5378 view.update(cx, |view, cx| {
5379 view.select_display_ranges(
5380 &[
5381 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5382 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5383 ],
5384 cx,
5385 );
5386 });
5387
5388 view.update(cx, |view, cx| {
5389 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5390 assert_eq!(
5391 view.selected_display_ranges(cx),
5392 &[
5393 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5394 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5395 ]
5396 );
5397 });
5398
5399 view.update(cx, |view, cx| {
5400 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5401 assert_eq!(
5402 view.selected_display_ranges(cx),
5403 &[
5404 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5405 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5406 ]
5407 );
5408 });
5409
5410 view.update(cx, |view, cx| {
5411 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5412 assert_eq!(
5413 view.selected_display_ranges(cx),
5414 &[
5415 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5416 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5417 ]
5418 );
5419 });
5420
5421 view.update(cx, |view, cx| {
5422 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5423 assert_eq!(
5424 view.selected_display_ranges(cx),
5425 &[
5426 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5427 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5428 ]
5429 );
5430 });
5431
5432 // Moving to the end of line again is a no-op.
5433 view.update(cx, |view, cx| {
5434 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5435 assert_eq!(
5436 view.selected_display_ranges(cx),
5437 &[
5438 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5439 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5440 ]
5441 );
5442 });
5443
5444 view.update(cx, |view, cx| {
5445 view.move_left(&MoveLeft, cx);
5446 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5447 assert_eq!(
5448 view.selected_display_ranges(cx),
5449 &[
5450 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5451 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5452 ]
5453 );
5454 });
5455
5456 view.update(cx, |view, cx| {
5457 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5458 assert_eq!(
5459 view.selected_display_ranges(cx),
5460 &[
5461 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5462 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5463 ]
5464 );
5465 });
5466
5467 view.update(cx, |view, cx| {
5468 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5469 assert_eq!(
5470 view.selected_display_ranges(cx),
5471 &[
5472 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5473 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5474 ]
5475 );
5476 });
5477
5478 view.update(cx, |view, cx| {
5479 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5480 assert_eq!(
5481 view.selected_display_ranges(cx),
5482 &[
5483 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5484 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5485 ]
5486 );
5487 });
5488
5489 view.update(cx, |view, cx| {
5490 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5491 assert_eq!(view.display_text(cx), "ab\n de");
5492 assert_eq!(
5493 view.selected_display_ranges(cx),
5494 &[
5495 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5496 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5497 ]
5498 );
5499 });
5500
5501 view.update(cx, |view, cx| {
5502 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5503 assert_eq!(view.display_text(cx), "\n");
5504 assert_eq!(
5505 view.selected_display_ranges(cx),
5506 &[
5507 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5508 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5509 ]
5510 );
5511 });
5512 }
5513
5514 #[gpui::test]
5515 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5516 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5517 let settings = EditorSettings::test(&cx);
5518 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5519 view.update(cx, |view, cx| {
5520 view.select_display_ranges(
5521 &[
5522 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5523 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5524 ],
5525 cx,
5526 );
5527 });
5528
5529 view.update(cx, |view, cx| {
5530 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5531 assert_eq!(
5532 view.selected_display_ranges(cx),
5533 &[
5534 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5535 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5536 ]
5537 );
5538 });
5539
5540 view.update(cx, |view, cx| {
5541 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5542 assert_eq!(
5543 view.selected_display_ranges(cx),
5544 &[
5545 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5546 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5547 ]
5548 );
5549 });
5550
5551 view.update(cx, |view, cx| {
5552 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5553 assert_eq!(
5554 view.selected_display_ranges(cx),
5555 &[
5556 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5557 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5558 ]
5559 );
5560 });
5561
5562 view.update(cx, |view, cx| {
5563 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5564 assert_eq!(
5565 view.selected_display_ranges(cx),
5566 &[
5567 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5568 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5569 ]
5570 );
5571 });
5572
5573 view.update(cx, |view, cx| {
5574 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5575 assert_eq!(
5576 view.selected_display_ranges(cx),
5577 &[
5578 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5579 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5580 ]
5581 );
5582 });
5583
5584 view.update(cx, |view, cx| {
5585 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5586 assert_eq!(
5587 view.selected_display_ranges(cx),
5588 &[
5589 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5590 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5591 ]
5592 );
5593 });
5594
5595 view.update(cx, |view, cx| {
5596 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5597 assert_eq!(
5598 view.selected_display_ranges(cx),
5599 &[
5600 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5601 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5602 ]
5603 );
5604 });
5605
5606 view.update(cx, |view, cx| {
5607 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5608 assert_eq!(
5609 view.selected_display_ranges(cx),
5610 &[
5611 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5612 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5613 ]
5614 );
5615 });
5616
5617 view.update(cx, |view, cx| {
5618 view.move_right(&MoveRight, cx);
5619 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5620 assert_eq!(
5621 view.selected_display_ranges(cx),
5622 &[
5623 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5624 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5625 ]
5626 );
5627 });
5628
5629 view.update(cx, |view, cx| {
5630 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5631 assert_eq!(
5632 view.selected_display_ranges(cx),
5633 &[
5634 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5635 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5636 ]
5637 );
5638 });
5639
5640 view.update(cx, |view, cx| {
5641 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5642 assert_eq!(
5643 view.selected_display_ranges(cx),
5644 &[
5645 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5646 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5647 ]
5648 );
5649 });
5650 }
5651
5652 #[gpui::test]
5653 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5654 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5655 let settings = EditorSettings::test(&cx);
5656 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5657
5658 view.update(cx, |view, cx| {
5659 view.set_wrap_width(Some(140.), cx);
5660 assert_eq!(
5661 view.display_text(cx),
5662 "use one::{\n two::three::\n four::five\n};"
5663 );
5664
5665 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5666
5667 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5668 assert_eq!(
5669 view.selected_display_ranges(cx),
5670 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5671 );
5672
5673 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5674 assert_eq!(
5675 view.selected_display_ranges(cx),
5676 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5677 );
5678
5679 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5680 assert_eq!(
5681 view.selected_display_ranges(cx),
5682 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5683 );
5684
5685 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5686 assert_eq!(
5687 view.selected_display_ranges(cx),
5688 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5689 );
5690
5691 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5692 assert_eq!(
5693 view.selected_display_ranges(cx),
5694 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5695 );
5696
5697 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5698 assert_eq!(
5699 view.selected_display_ranges(cx),
5700 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5701 );
5702 });
5703 }
5704
5705 #[gpui::test]
5706 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5707 let buffer = MultiBuffer::build_simple("one two three four", cx);
5708 let settings = EditorSettings::test(&cx);
5709 let (_, view) = cx.add_window(Default::default(), |cx| {
5710 build_editor(buffer.clone(), settings, cx)
5711 });
5712
5713 view.update(cx, |view, cx| {
5714 view.select_display_ranges(
5715 &[
5716 // an empty selection - the preceding word fragment is deleted
5717 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5718 // characters selected - they are deleted
5719 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5720 ],
5721 cx,
5722 );
5723 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5724 });
5725
5726 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5727
5728 view.update(cx, |view, cx| {
5729 view.select_display_ranges(
5730 &[
5731 // an empty selection - the following word fragment is deleted
5732 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5733 // characters selected - they are deleted
5734 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5735 ],
5736 cx,
5737 );
5738 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5739 });
5740
5741 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5742 }
5743
5744 #[gpui::test]
5745 fn test_newline(cx: &mut gpui::MutableAppContext) {
5746 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5747 let settings = EditorSettings::test(&cx);
5748 let (_, view) = cx.add_window(Default::default(), |cx| {
5749 build_editor(buffer.clone(), settings, cx)
5750 });
5751
5752 view.update(cx, |view, cx| {
5753 view.select_display_ranges(
5754 &[
5755 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5756 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5757 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5758 ],
5759 cx,
5760 );
5761
5762 view.newline(&Newline, cx);
5763 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5764 });
5765 }
5766
5767 #[gpui::test]
5768 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5769 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5770 let settings = EditorSettings::test(&cx);
5771 let (_, view) = cx.add_window(Default::default(), |cx| {
5772 build_editor(buffer.clone(), settings, cx)
5773 });
5774
5775 view.update(cx, |view, cx| {
5776 // two selections on the same line
5777 view.select_display_ranges(
5778 &[
5779 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5780 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5781 ],
5782 cx,
5783 );
5784
5785 // indent from mid-tabstop to full tabstop
5786 view.tab(&Tab, cx);
5787 assert_eq!(view.text(cx), " one two\nthree\n four");
5788 assert_eq!(
5789 view.selected_display_ranges(cx),
5790 &[
5791 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5792 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5793 ]
5794 );
5795
5796 // outdent from 1 tabstop to 0 tabstops
5797 view.outdent(&Outdent, cx);
5798 assert_eq!(view.text(cx), "one two\nthree\n four");
5799 assert_eq!(
5800 view.selected_display_ranges(cx),
5801 &[
5802 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5803 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5804 ]
5805 );
5806
5807 // select across line ending
5808 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5809
5810 // indent and outdent affect only the preceding line
5811 view.tab(&Tab, cx);
5812 assert_eq!(view.text(cx), "one two\n three\n four");
5813 assert_eq!(
5814 view.selected_display_ranges(cx),
5815 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5816 );
5817 view.outdent(&Outdent, cx);
5818 assert_eq!(view.text(cx), "one two\nthree\n four");
5819 assert_eq!(
5820 view.selected_display_ranges(cx),
5821 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5822 );
5823
5824 // Ensure that indenting/outdenting works when the cursor is at column 0.
5825 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5826 view.tab(&Tab, cx);
5827 assert_eq!(view.text(cx), "one two\n three\n four");
5828 assert_eq!(
5829 view.selected_display_ranges(cx),
5830 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5831 );
5832
5833 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5834 view.outdent(&Outdent, cx);
5835 assert_eq!(view.text(cx), "one two\nthree\n four");
5836 assert_eq!(
5837 view.selected_display_ranges(cx),
5838 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5839 );
5840 });
5841 }
5842
5843 #[gpui::test]
5844 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5845 let buffer =
5846 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5847 let settings = EditorSettings::test(&cx);
5848 let (_, view) = cx.add_window(Default::default(), |cx| {
5849 build_editor(buffer.clone(), settings, cx)
5850 });
5851
5852 view.update(cx, |view, cx| {
5853 view.select_display_ranges(
5854 &[
5855 // an empty selection - the preceding character is deleted
5856 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5857 // one character selected - it is deleted
5858 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5859 // a line suffix selected - it is deleted
5860 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5861 ],
5862 cx,
5863 );
5864 view.backspace(&Backspace, cx);
5865 });
5866
5867 assert_eq!(
5868 buffer.read(cx).read(cx).text(),
5869 "oe two three\nfou five six\nseven ten\n"
5870 );
5871 }
5872
5873 #[gpui::test]
5874 fn test_delete(cx: &mut gpui::MutableAppContext) {
5875 let buffer =
5876 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5877 let settings = EditorSettings::test(&cx);
5878 let (_, view) = cx.add_window(Default::default(), |cx| {
5879 build_editor(buffer.clone(), settings, cx)
5880 });
5881
5882 view.update(cx, |view, cx| {
5883 view.select_display_ranges(
5884 &[
5885 // an empty selection - the following character is deleted
5886 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5887 // one character selected - it is deleted
5888 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5889 // a line suffix selected - it is deleted
5890 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5891 ],
5892 cx,
5893 );
5894 view.delete(&Delete, cx);
5895 });
5896
5897 assert_eq!(
5898 buffer.read(cx).read(cx).text(),
5899 "on two three\nfou five six\nseven ten\n"
5900 );
5901 }
5902
5903 #[gpui::test]
5904 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5905 let settings = EditorSettings::test(&cx);
5906 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5907 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5908 view.update(cx, |view, cx| {
5909 view.select_display_ranges(
5910 &[
5911 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5912 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5913 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5914 ],
5915 cx,
5916 );
5917 view.delete_line(&DeleteLine, cx);
5918 assert_eq!(view.display_text(cx), "ghi");
5919 assert_eq!(
5920 view.selected_display_ranges(cx),
5921 vec![
5922 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5923 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5924 ]
5925 );
5926 });
5927
5928 let settings = EditorSettings::test(&cx);
5929 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5930 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5931 view.update(cx, |view, cx| {
5932 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5933 view.delete_line(&DeleteLine, cx);
5934 assert_eq!(view.display_text(cx), "ghi\n");
5935 assert_eq!(
5936 view.selected_display_ranges(cx),
5937 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5938 );
5939 });
5940 }
5941
5942 #[gpui::test]
5943 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5944 let settings = EditorSettings::test(&cx);
5945 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5946 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5947 view.update(cx, |view, cx| {
5948 view.select_display_ranges(
5949 &[
5950 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5951 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5952 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5953 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5954 ],
5955 cx,
5956 );
5957 view.duplicate_line(&DuplicateLine, cx);
5958 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5959 assert_eq!(
5960 view.selected_display_ranges(cx),
5961 vec![
5962 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5963 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5964 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5965 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5966 ]
5967 );
5968 });
5969
5970 let settings = EditorSettings::test(&cx);
5971 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5972 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5973 view.update(cx, |view, cx| {
5974 view.select_display_ranges(
5975 &[
5976 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5977 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5978 ],
5979 cx,
5980 );
5981 view.duplicate_line(&DuplicateLine, cx);
5982 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5983 assert_eq!(
5984 view.selected_display_ranges(cx),
5985 vec![
5986 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5987 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5988 ]
5989 );
5990 });
5991 }
5992
5993 #[gpui::test]
5994 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5995 let settings = EditorSettings::test(&cx);
5996 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5997 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5998 view.update(cx, |view, cx| {
5999 view.fold_ranges(
6000 vec![
6001 Point::new(0, 2)..Point::new(1, 2),
6002 Point::new(2, 3)..Point::new(4, 1),
6003 Point::new(7, 0)..Point::new(8, 4),
6004 ],
6005 cx,
6006 );
6007 view.select_display_ranges(
6008 &[
6009 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6010 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6011 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6012 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6013 ],
6014 cx,
6015 );
6016 assert_eq!(
6017 view.display_text(cx),
6018 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6019 );
6020
6021 view.move_line_up(&MoveLineUp, cx);
6022 assert_eq!(
6023 view.display_text(cx),
6024 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6025 );
6026 assert_eq!(
6027 view.selected_display_ranges(cx),
6028 vec![
6029 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6030 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6031 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6032 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6033 ]
6034 );
6035 });
6036
6037 view.update(cx, |view, cx| {
6038 view.move_line_down(&MoveLineDown, cx);
6039 assert_eq!(
6040 view.display_text(cx),
6041 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6042 );
6043 assert_eq!(
6044 view.selected_display_ranges(cx),
6045 vec![
6046 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6047 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6048 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6049 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6050 ]
6051 );
6052 });
6053
6054 view.update(cx, |view, cx| {
6055 view.move_line_down(&MoveLineDown, cx);
6056 assert_eq!(
6057 view.display_text(cx),
6058 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6059 );
6060 assert_eq!(
6061 view.selected_display_ranges(cx),
6062 vec![
6063 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6064 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6065 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6066 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6067 ]
6068 );
6069 });
6070
6071 view.update(cx, |view, cx| {
6072 view.move_line_up(&MoveLineUp, cx);
6073 assert_eq!(
6074 view.display_text(cx),
6075 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6076 );
6077 assert_eq!(
6078 view.selected_display_ranges(cx),
6079 vec![
6080 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6081 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6082 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6083 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6084 ]
6085 );
6086 });
6087 }
6088
6089 #[gpui::test]
6090 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6091 let settings = EditorSettings::test(&cx);
6092 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6093 let snapshot = buffer.read(cx).snapshot(cx);
6094 let (_, editor) =
6095 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6096 editor.update(cx, |editor, cx| {
6097 editor.insert_blocks(
6098 [BlockProperties {
6099 position: snapshot.anchor_after(Point::new(2, 0)),
6100 disposition: BlockDisposition::Below,
6101 height: 1,
6102 render: Arc::new(|_| Empty::new().boxed()),
6103 }],
6104 cx,
6105 );
6106 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6107 editor.move_line_down(&MoveLineDown, cx);
6108 });
6109 }
6110
6111 #[gpui::test]
6112 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6113 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6114 let settings = EditorSettings::test(&cx);
6115 let view = cx
6116 .add_window(Default::default(), |cx| {
6117 build_editor(buffer.clone(), settings, cx)
6118 })
6119 .1;
6120
6121 // Cut with three selections. Clipboard text is divided into three slices.
6122 view.update(cx, |view, cx| {
6123 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6124 view.cut(&Cut, cx);
6125 assert_eq!(view.display_text(cx), "two four six ");
6126 });
6127
6128 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6129 view.update(cx, |view, cx| {
6130 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6131 view.paste(&Paste, cx);
6132 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6133 assert_eq!(
6134 view.selected_display_ranges(cx),
6135 &[
6136 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6137 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6138 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6139 ]
6140 );
6141 });
6142
6143 // Paste again but with only two cursors. Since the number of cursors doesn't
6144 // match the number of slices in the clipboard, the entire clipboard text
6145 // is pasted at each cursor.
6146 view.update(cx, |view, cx| {
6147 view.select_ranges(vec![0..0, 31..31], None, cx);
6148 view.handle_input(&Input("( ".into()), cx);
6149 view.paste(&Paste, cx);
6150 view.handle_input(&Input(") ".into()), cx);
6151 assert_eq!(
6152 view.display_text(cx),
6153 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6154 );
6155 });
6156
6157 view.update(cx, |view, cx| {
6158 view.select_ranges(vec![0..0], None, cx);
6159 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6160 assert_eq!(
6161 view.display_text(cx),
6162 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6163 );
6164 });
6165
6166 // Cut with three selections, one of which is full-line.
6167 view.update(cx, |view, cx| {
6168 view.select_display_ranges(
6169 &[
6170 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6171 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6172 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6173 ],
6174 cx,
6175 );
6176 view.cut(&Cut, cx);
6177 assert_eq!(
6178 view.display_text(cx),
6179 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6180 );
6181 });
6182
6183 // Paste with three selections, noticing how the copied selection that was full-line
6184 // gets inserted before the second cursor.
6185 view.update(cx, |view, cx| {
6186 view.select_display_ranges(
6187 &[
6188 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6189 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6190 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6191 ],
6192 cx,
6193 );
6194 view.paste(&Paste, cx);
6195 assert_eq!(
6196 view.display_text(cx),
6197 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6198 );
6199 assert_eq!(
6200 view.selected_display_ranges(cx),
6201 &[
6202 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6203 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6204 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6205 ]
6206 );
6207 });
6208
6209 // Copy with a single cursor only, which writes the whole line into the clipboard.
6210 view.update(cx, |view, cx| {
6211 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6212 view.copy(&Copy, cx);
6213 });
6214
6215 // Paste with three selections, noticing how the copied full-line selection is inserted
6216 // before the empty selections but replaces the selection that is non-empty.
6217 view.update(cx, |view, cx| {
6218 view.select_display_ranges(
6219 &[
6220 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6221 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6222 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6223 ],
6224 cx,
6225 );
6226 view.paste(&Paste, cx);
6227 assert_eq!(
6228 view.display_text(cx),
6229 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6230 );
6231 assert_eq!(
6232 view.selected_display_ranges(cx),
6233 &[
6234 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6235 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6236 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6237 ]
6238 );
6239 });
6240 }
6241
6242 #[gpui::test]
6243 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6244 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6245 let settings = EditorSettings::test(&cx);
6246 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6247 view.update(cx, |view, cx| {
6248 view.select_all(&SelectAll, cx);
6249 assert_eq!(
6250 view.selected_display_ranges(cx),
6251 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6252 );
6253 });
6254 }
6255
6256 #[gpui::test]
6257 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6258 let settings = EditorSettings::test(&cx);
6259 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6260 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6261 view.update(cx, |view, cx| {
6262 view.select_display_ranges(
6263 &[
6264 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6265 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6266 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6267 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6268 ],
6269 cx,
6270 );
6271 view.select_line(&SelectLine, cx);
6272 assert_eq!(
6273 view.selected_display_ranges(cx),
6274 vec![
6275 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6276 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6277 ]
6278 );
6279 });
6280
6281 view.update(cx, |view, cx| {
6282 view.select_line(&SelectLine, cx);
6283 assert_eq!(
6284 view.selected_display_ranges(cx),
6285 vec![
6286 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6287 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6288 ]
6289 );
6290 });
6291
6292 view.update(cx, |view, cx| {
6293 view.select_line(&SelectLine, cx);
6294 assert_eq!(
6295 view.selected_display_ranges(cx),
6296 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6297 );
6298 });
6299 }
6300
6301 #[gpui::test]
6302 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6303 let settings = EditorSettings::test(&cx);
6304 let buffer = MultiBuffer::build_simple(&sample_text(9, 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, 0)..DisplayPoint::new(0, 1),
6318 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6319 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6320 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6321 ],
6322 cx,
6323 );
6324 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6325 });
6326
6327 view.update(cx, |view, cx| {
6328 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6329 assert_eq!(
6330 view.display_text(cx),
6331 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6332 );
6333 assert_eq!(
6334 view.selected_display_ranges(cx),
6335 [
6336 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6337 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6338 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6339 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6340 ]
6341 );
6342 });
6343
6344 view.update(cx, |view, cx| {
6345 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6346 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6347 assert_eq!(
6348 view.display_text(cx),
6349 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6350 );
6351 assert_eq!(
6352 view.selected_display_ranges(cx),
6353 [
6354 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6355 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6356 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6357 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6358 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6359 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6360 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6361 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6362 ]
6363 );
6364 });
6365 }
6366
6367 #[gpui::test]
6368 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6369 let settings = EditorSettings::test(&cx);
6370 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6371 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6372
6373 view.update(cx, |view, cx| {
6374 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6375 });
6376 view.update(cx, |view, cx| {
6377 view.add_selection_above(&AddSelectionAbove, cx);
6378 assert_eq!(
6379 view.selected_display_ranges(cx),
6380 vec![
6381 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6382 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6383 ]
6384 );
6385 });
6386
6387 view.update(cx, |view, cx| {
6388 view.add_selection_above(&AddSelectionAbove, cx);
6389 assert_eq!(
6390 view.selected_display_ranges(cx),
6391 vec![
6392 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6393 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6394 ]
6395 );
6396 });
6397
6398 view.update(cx, |view, cx| {
6399 view.add_selection_below(&AddSelectionBelow, cx);
6400 assert_eq!(
6401 view.selected_display_ranges(cx),
6402 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6403 );
6404 });
6405
6406 view.update(cx, |view, cx| {
6407 view.add_selection_below(&AddSelectionBelow, cx);
6408 assert_eq!(
6409 view.selected_display_ranges(cx),
6410 vec![
6411 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6412 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6413 ]
6414 );
6415 });
6416
6417 view.update(cx, |view, cx| {
6418 view.add_selection_below(&AddSelectionBelow, cx);
6419 assert_eq!(
6420 view.selected_display_ranges(cx),
6421 vec![
6422 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6423 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6424 ]
6425 );
6426 });
6427
6428 view.update(cx, |view, cx| {
6429 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6430 });
6431 view.update(cx, |view, cx| {
6432 view.add_selection_below(&AddSelectionBelow, cx);
6433 assert_eq!(
6434 view.selected_display_ranges(cx),
6435 vec![
6436 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6437 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6438 ]
6439 );
6440 });
6441
6442 view.update(cx, |view, cx| {
6443 view.add_selection_below(&AddSelectionBelow, cx);
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 vec![
6447 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6448 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6449 ]
6450 );
6451 });
6452
6453 view.update(cx, |view, cx| {
6454 view.add_selection_above(&AddSelectionAbove, cx);
6455 assert_eq!(
6456 view.selected_display_ranges(cx),
6457 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6458 );
6459 });
6460
6461 view.update(cx, |view, cx| {
6462 view.add_selection_above(&AddSelectionAbove, cx);
6463 assert_eq!(
6464 view.selected_display_ranges(cx),
6465 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6466 );
6467 });
6468
6469 view.update(cx, |view, cx| {
6470 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6471 view.add_selection_below(&AddSelectionBelow, cx);
6472 assert_eq!(
6473 view.selected_display_ranges(cx),
6474 vec![
6475 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6476 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6477 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6478 ]
6479 );
6480 });
6481
6482 view.update(cx, |view, cx| {
6483 view.add_selection_below(&AddSelectionBelow, cx);
6484 assert_eq!(
6485 view.selected_display_ranges(cx),
6486 vec![
6487 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6488 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6489 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6490 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6491 ]
6492 );
6493 });
6494
6495 view.update(cx, |view, cx| {
6496 view.add_selection_above(&AddSelectionAbove, cx);
6497 assert_eq!(
6498 view.selected_display_ranges(cx),
6499 vec![
6500 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6501 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6502 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6503 ]
6504 );
6505 });
6506
6507 view.update(cx, |view, cx| {
6508 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6509 });
6510 view.update(cx, |view, cx| {
6511 view.add_selection_above(&AddSelectionAbove, cx);
6512 assert_eq!(
6513 view.selected_display_ranges(cx),
6514 vec![
6515 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6516 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6517 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6518 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6519 ]
6520 );
6521 });
6522
6523 view.update(cx, |view, cx| {
6524 view.add_selection_below(&AddSelectionBelow, cx);
6525 assert_eq!(
6526 view.selected_display_ranges(cx),
6527 vec![
6528 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6529 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6530 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6531 ]
6532 );
6533 });
6534 }
6535
6536 #[gpui::test]
6537 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6538 let settings = cx.read(EditorSettings::test);
6539 let language = Arc::new(Language::new(
6540 LanguageConfig::default(),
6541 Some(tree_sitter_rust::language()),
6542 ));
6543
6544 let text = r#"
6545 use mod1::mod2::{mod3, mod4};
6546
6547 fn fn_1(param1: bool, param2: &str) {
6548 let var1 = "text";
6549 }
6550 "#
6551 .unindent();
6552
6553 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6554 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6555 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6556 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6557 .await;
6558
6559 view.update(&mut cx, |view, cx| {
6560 view.select_display_ranges(
6561 &[
6562 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6563 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6564 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6565 ],
6566 cx,
6567 );
6568 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6569 });
6570 assert_eq!(
6571 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6572 &[
6573 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6574 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6575 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6576 ]
6577 );
6578
6579 view.update(&mut cx, |view, cx| {
6580 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6581 });
6582 assert_eq!(
6583 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6584 &[
6585 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6586 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6587 ]
6588 );
6589
6590 view.update(&mut cx, |view, cx| {
6591 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6592 });
6593 assert_eq!(
6594 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6595 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6596 );
6597
6598 // Trying to expand the selected syntax node one more time has no effect.
6599 view.update(&mut cx, |view, cx| {
6600 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6601 });
6602 assert_eq!(
6603 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6604 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6605 );
6606
6607 view.update(&mut cx, |view, cx| {
6608 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6609 });
6610 assert_eq!(
6611 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6612 &[
6613 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6614 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6615 ]
6616 );
6617
6618 view.update(&mut cx, |view, cx| {
6619 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6620 });
6621 assert_eq!(
6622 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6623 &[
6624 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6625 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6626 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6627 ]
6628 );
6629
6630 view.update(&mut cx, |view, cx| {
6631 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6632 });
6633 assert_eq!(
6634 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6635 &[
6636 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6637 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6638 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6639 ]
6640 );
6641
6642 // Trying to shrink the selected syntax node one more time has no effect.
6643 view.update(&mut cx, |view, cx| {
6644 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6645 });
6646 assert_eq!(
6647 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6648 &[
6649 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6650 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6651 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6652 ]
6653 );
6654
6655 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6656 // a fold.
6657 view.update(&mut cx, |view, cx| {
6658 view.fold_ranges(
6659 vec![
6660 Point::new(0, 21)..Point::new(0, 24),
6661 Point::new(3, 20)..Point::new(3, 22),
6662 ],
6663 cx,
6664 );
6665 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6666 });
6667 assert_eq!(
6668 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6669 &[
6670 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6671 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6672 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6673 ]
6674 );
6675 }
6676
6677 #[gpui::test]
6678 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6679 let settings = cx.read(EditorSettings::test);
6680 let language = Arc::new(
6681 Language::new(
6682 LanguageConfig {
6683 brackets: vec![
6684 BracketPair {
6685 start: "{".to_string(),
6686 end: "}".to_string(),
6687 close: false,
6688 newline: true,
6689 },
6690 BracketPair {
6691 start: "(".to_string(),
6692 end: ")".to_string(),
6693 close: false,
6694 newline: true,
6695 },
6696 ],
6697 ..Default::default()
6698 },
6699 Some(tree_sitter_rust::language()),
6700 )
6701 .with_indents_query(
6702 r#"
6703 (_ "(" ")" @end) @indent
6704 (_ "{" "}" @end) @indent
6705 "#,
6706 )
6707 .unwrap(),
6708 );
6709
6710 let text = "fn a() {}";
6711
6712 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6713 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6714 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6715 editor
6716 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6717 .await;
6718
6719 editor.update(&mut cx, |editor, cx| {
6720 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6721 editor.newline(&Newline, cx);
6722 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6723 assert_eq!(
6724 editor.selected_ranges(cx),
6725 &[
6726 Point::new(1, 4)..Point::new(1, 4),
6727 Point::new(3, 4)..Point::new(3, 4),
6728 Point::new(5, 0)..Point::new(5, 0)
6729 ]
6730 );
6731 });
6732 }
6733
6734 #[gpui::test]
6735 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6736 let settings = cx.read(EditorSettings::test);
6737 let language = Arc::new(Language::new(
6738 LanguageConfig {
6739 brackets: vec![
6740 BracketPair {
6741 start: "{".to_string(),
6742 end: "}".to_string(),
6743 close: true,
6744 newline: true,
6745 },
6746 BracketPair {
6747 start: "/*".to_string(),
6748 end: " */".to_string(),
6749 close: true,
6750 newline: true,
6751 },
6752 ],
6753 ..Default::default()
6754 },
6755 Some(tree_sitter_rust::language()),
6756 ));
6757
6758 let text = r#"
6759 a
6760
6761 /
6762
6763 "#
6764 .unindent();
6765
6766 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6767 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6768 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6769 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6770 .await;
6771
6772 view.update(&mut cx, |view, cx| {
6773 view.select_display_ranges(
6774 &[
6775 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6776 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6777 ],
6778 cx,
6779 );
6780 view.handle_input(&Input("{".to_string()), cx);
6781 view.handle_input(&Input("{".to_string()), cx);
6782 view.handle_input(&Input("{".to_string()), cx);
6783 assert_eq!(
6784 view.text(cx),
6785 "
6786 {{{}}}
6787 {{{}}}
6788 /
6789
6790 "
6791 .unindent()
6792 );
6793
6794 view.move_right(&MoveRight, cx);
6795 view.handle_input(&Input("}".to_string()), cx);
6796 view.handle_input(&Input("}".to_string()), cx);
6797 view.handle_input(&Input("}".to_string()), cx);
6798 assert_eq!(
6799 view.text(cx),
6800 "
6801 {{{}}}}
6802 {{{}}}}
6803 /
6804
6805 "
6806 .unindent()
6807 );
6808
6809 view.undo(&Undo, cx);
6810 view.handle_input(&Input("/".to_string()), cx);
6811 view.handle_input(&Input("*".to_string()), cx);
6812 assert_eq!(
6813 view.text(cx),
6814 "
6815 /* */
6816 /* */
6817 /
6818
6819 "
6820 .unindent()
6821 );
6822
6823 view.undo(&Undo, cx);
6824 view.select_display_ranges(
6825 &[
6826 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6827 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6828 ],
6829 cx,
6830 );
6831 view.handle_input(&Input("*".to_string()), cx);
6832 assert_eq!(
6833 view.text(cx),
6834 "
6835 a
6836
6837 /*
6838 *
6839 "
6840 .unindent()
6841 );
6842 });
6843 }
6844
6845 #[gpui::test]
6846 async fn test_snippets(mut cx: gpui::TestAppContext) {
6847 let settings = cx.read(EditorSettings::test);
6848
6849 let text = "a. b";
6850 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
6851 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6852
6853 editor.update(&mut cx, |editor, cx| {
6854 editor
6855 .insert_snippet(2..2, "f(${1:one}, ${2:two})$0", cx)
6856 .unwrap();
6857 assert_eq!(editor.text(cx), "a.f(one, two) b");
6858 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6859
6860 // Can't move earlier than the first tab stop
6861 assert!(!editor.move_to_prev_snippet_tabstop(cx));
6862
6863 assert!(editor.move_to_next_snippet_tabstop(cx));
6864 assert_eq!(editor.selected_ranges::<usize>(cx), &[9..12]);
6865
6866 assert!(editor.move_to_prev_snippet_tabstop(cx));
6867 assert_eq!(editor.selected_ranges::<usize>(cx), &[4..7]);
6868
6869 assert!(editor.move_to_next_snippet_tabstop(cx));
6870 assert!(editor.move_to_next_snippet_tabstop(cx));
6871 assert_eq!(editor.selected_ranges::<usize>(cx), &[13..13]);
6872
6873 // As soon as the last tab stop is reached, snippet state is gone
6874 assert!(!editor.move_to_prev_snippet_tabstop(cx));
6875 });
6876 }
6877
6878 #[gpui::test]
6879 async fn test_completion(mut cx: gpui::TestAppContext) {
6880 let settings = cx.read(EditorSettings::test);
6881 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
6882 lsp::ServerCapabilities {
6883 completion_provider: Some(lsp::CompletionOptions {
6884 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
6885 ..Default::default()
6886 }),
6887 ..Default::default()
6888 },
6889 cx.background(),
6890 )
6891 .await;
6892
6893 let text = "
6894 one
6895 two
6896 three
6897 "
6898 .unindent();
6899 let buffer = cx.add_model(|cx| {
6900 Buffer::from_file(
6901 0,
6902 text,
6903 Box::new(FakeFile {
6904 path: Arc::from(Path::new("/the/file")),
6905 }),
6906 cx,
6907 )
6908 .with_language_server(language_server, cx)
6909 });
6910 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6911 buffer.next_notification(&cx).await;
6912
6913 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6914
6915 editor.update(&mut cx, |editor, cx| {
6916 editor.select_ranges([3..3], None, cx);
6917 editor.handle_input(&Input(".".to_string()), cx);
6918 });
6919
6920 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
6921 assert_eq!(
6922 params.text_document_position.text_document.uri,
6923 lsp::Url::from_file_path("/the/file").unwrap()
6924 );
6925 assert_eq!(
6926 params.text_document_position.position,
6927 lsp::Position::new(0, 4)
6928 );
6929
6930 fake.respond(
6931 id,
6932 Some(lsp::CompletionResponse::Array(vec![
6933 lsp::CompletionItem {
6934 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6935 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6936 new_text: "first_completion".to_string(),
6937 })),
6938 ..Default::default()
6939 },
6940 lsp::CompletionItem {
6941 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6942 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6943 new_text: "second_completion".to_string(),
6944 })),
6945 ..Default::default()
6946 },
6947 ])),
6948 )
6949 .await;
6950
6951 editor.next_notification(&cx).await;
6952
6953 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
6954 editor.move_down(&MoveDown, cx);
6955 let apply_additional_edits = editor.confirm_completion(cx).unwrap();
6956 assert_eq!(
6957 editor.text(cx),
6958 "
6959 one.second_completion
6960 two
6961 three
6962 "
6963 .unindent()
6964 );
6965 apply_additional_edits
6966 });
6967
6968 let (id, _) = fake
6969 .receive_request::<lsp::request::ResolveCompletionItem>()
6970 .await;
6971 fake.respond(
6972 id,
6973 lsp::CompletionItem {
6974 additional_text_edits: Some(vec![lsp::TextEdit::new(
6975 lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 5)),
6976 "\nadditional edit".to_string(),
6977 )]),
6978 ..Default::default()
6979 },
6980 )
6981 .await;
6982
6983 apply_additional_edits.await.unwrap();
6984 assert_eq!(
6985 editor.read_with(&cx, |editor, cx| editor.text(cx)),
6986 "
6987 one.second_completion
6988 two
6989 three
6990 additional edit
6991 "
6992 .unindent()
6993 );
6994 }
6995
6996 #[gpui::test]
6997 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6998 let settings = cx.read(EditorSettings::test);
6999 let language = Arc::new(Language::new(
7000 LanguageConfig {
7001 line_comment: Some("// ".to_string()),
7002 ..Default::default()
7003 },
7004 Some(tree_sitter_rust::language()),
7005 ));
7006
7007 let text = "
7008 fn a() {
7009 //b();
7010 // c();
7011 // d();
7012 }
7013 "
7014 .unindent();
7015
7016 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7017 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7018 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7019
7020 view.update(&mut cx, |editor, cx| {
7021 // If multiple selections intersect a line, the line is only
7022 // toggled once.
7023 editor.select_display_ranges(
7024 &[
7025 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7026 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7027 ],
7028 cx,
7029 );
7030 editor.toggle_comments(&ToggleComments, cx);
7031 assert_eq!(
7032 editor.text(cx),
7033 "
7034 fn a() {
7035 b();
7036 c();
7037 d();
7038 }
7039 "
7040 .unindent()
7041 );
7042
7043 // The comment prefix is inserted at the same column for every line
7044 // in a selection.
7045 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7046 editor.toggle_comments(&ToggleComments, cx);
7047 assert_eq!(
7048 editor.text(cx),
7049 "
7050 fn a() {
7051 // b();
7052 // c();
7053 // d();
7054 }
7055 "
7056 .unindent()
7057 );
7058
7059 // If a selection ends at the beginning of a line, that line is not toggled.
7060 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7061 editor.toggle_comments(&ToggleComments, cx);
7062 assert_eq!(
7063 editor.text(cx),
7064 "
7065 fn a() {
7066 // b();
7067 c();
7068 // d();
7069 }
7070 "
7071 .unindent()
7072 );
7073 });
7074 }
7075
7076 #[gpui::test]
7077 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7078 let settings = EditorSettings::test(cx);
7079 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7080 let multibuffer = cx.add_model(|cx| {
7081 let mut multibuffer = MultiBuffer::new(0);
7082 multibuffer.push_excerpt(
7083 ExcerptProperties {
7084 buffer: &buffer,
7085 range: Point::new(0, 0)..Point::new(0, 4),
7086 },
7087 cx,
7088 );
7089 multibuffer.push_excerpt(
7090 ExcerptProperties {
7091 buffer: &buffer,
7092 range: Point::new(1, 0)..Point::new(1, 4),
7093 },
7094 cx,
7095 );
7096 multibuffer
7097 });
7098
7099 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7100
7101 let (_, view) = cx.add_window(Default::default(), |cx| {
7102 build_editor(multibuffer, settings, cx)
7103 });
7104 view.update(cx, |view, cx| {
7105 view.select_display_ranges(
7106 &[
7107 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7108 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7109 ],
7110 cx,
7111 );
7112
7113 view.handle_input(&Input("X".to_string()), cx);
7114 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7115 assert_eq!(
7116 view.selected_display_ranges(cx),
7117 &[
7118 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7119 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7120 ]
7121 )
7122 });
7123 }
7124
7125 #[gpui::test]
7126 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7127 let settings = EditorSettings::test(cx);
7128 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7129 let multibuffer = cx.add_model(|cx| {
7130 let mut multibuffer = MultiBuffer::new(0);
7131 multibuffer.push_excerpt(
7132 ExcerptProperties {
7133 buffer: &buffer,
7134 range: Point::new(0, 0)..Point::new(1, 4),
7135 },
7136 cx,
7137 );
7138 multibuffer.push_excerpt(
7139 ExcerptProperties {
7140 buffer: &buffer,
7141 range: Point::new(1, 0)..Point::new(2, 4),
7142 },
7143 cx,
7144 );
7145 multibuffer
7146 });
7147
7148 assert_eq!(
7149 multibuffer.read(cx).read(cx).text(),
7150 "aaaa\nbbbb\nbbbb\ncccc"
7151 );
7152
7153 let (_, view) = cx.add_window(Default::default(), |cx| {
7154 build_editor(multibuffer, settings, cx)
7155 });
7156 view.update(cx, |view, cx| {
7157 view.select_display_ranges(
7158 &[
7159 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7160 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7161 ],
7162 cx,
7163 );
7164
7165 view.handle_input(&Input("X".to_string()), cx);
7166 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7167 assert_eq!(
7168 view.selected_display_ranges(cx),
7169 &[
7170 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7171 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7172 ]
7173 );
7174
7175 view.newline(&Newline, cx);
7176 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7177 assert_eq!(
7178 view.selected_display_ranges(cx),
7179 &[
7180 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7181 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7182 ]
7183 );
7184 });
7185 }
7186
7187 #[gpui::test]
7188 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7189 let settings = EditorSettings::test(cx);
7190 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7191 let mut excerpt1_id = None;
7192 let multibuffer = cx.add_model(|cx| {
7193 let mut multibuffer = MultiBuffer::new(0);
7194 excerpt1_id = Some(multibuffer.push_excerpt(
7195 ExcerptProperties {
7196 buffer: &buffer,
7197 range: Point::new(0, 0)..Point::new(1, 4),
7198 },
7199 cx,
7200 ));
7201 multibuffer.push_excerpt(
7202 ExcerptProperties {
7203 buffer: &buffer,
7204 range: Point::new(1, 0)..Point::new(2, 4),
7205 },
7206 cx,
7207 );
7208 multibuffer
7209 });
7210 assert_eq!(
7211 multibuffer.read(cx).read(cx).text(),
7212 "aaaa\nbbbb\nbbbb\ncccc"
7213 );
7214 let (_, editor) = cx.add_window(Default::default(), |cx| {
7215 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7216 editor.select_display_ranges(
7217 &[
7218 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7219 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7220 ],
7221 cx,
7222 );
7223 editor
7224 });
7225
7226 // Refreshing selections is a no-op when excerpts haven't changed.
7227 editor.update(cx, |editor, cx| {
7228 editor.refresh_selections(cx);
7229 assert_eq!(
7230 editor.selected_display_ranges(cx),
7231 [
7232 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7233 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7234 ]
7235 );
7236 });
7237
7238 multibuffer.update(cx, |multibuffer, cx| {
7239 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7240 });
7241 editor.update(cx, |editor, cx| {
7242 // Removing an excerpt causes the first selection to become degenerate.
7243 assert_eq!(
7244 editor.selected_display_ranges(cx),
7245 [
7246 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7247 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7248 ]
7249 );
7250
7251 // Refreshing selections will relocate the first selection to the original buffer
7252 // location.
7253 editor.refresh_selections(cx);
7254 assert_eq!(
7255 editor.selected_display_ranges(cx),
7256 [
7257 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7258 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7259 ]
7260 );
7261 });
7262 }
7263
7264 #[gpui::test]
7265 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7266 let settings = cx.read(EditorSettings::test);
7267 let language = Arc::new(Language::new(
7268 LanguageConfig {
7269 brackets: vec![
7270 BracketPair {
7271 start: "{".to_string(),
7272 end: "}".to_string(),
7273 close: true,
7274 newline: true,
7275 },
7276 BracketPair {
7277 start: "/* ".to_string(),
7278 end: " */".to_string(),
7279 close: true,
7280 newline: true,
7281 },
7282 ],
7283 ..Default::default()
7284 },
7285 Some(tree_sitter_rust::language()),
7286 ));
7287
7288 let text = concat!(
7289 "{ }\n", // Suppress rustfmt
7290 " x\n", //
7291 " /* */\n", //
7292 "x\n", //
7293 "{{} }\n", //
7294 );
7295
7296 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7297 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7298 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7299 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7300 .await;
7301
7302 view.update(&mut cx, |view, cx| {
7303 view.select_display_ranges(
7304 &[
7305 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7306 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7307 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7308 ],
7309 cx,
7310 );
7311 view.newline(&Newline, cx);
7312
7313 assert_eq!(
7314 view.buffer().read(cx).read(cx).text(),
7315 concat!(
7316 "{ \n", // Suppress rustfmt
7317 "\n", //
7318 "}\n", //
7319 " x\n", //
7320 " /* \n", //
7321 " \n", //
7322 " */\n", //
7323 "x\n", //
7324 "{{} \n", //
7325 "}\n", //
7326 )
7327 );
7328 });
7329 }
7330
7331 #[gpui::test]
7332 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7333 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7334 let settings = EditorSettings::test(&cx);
7335 let (_, editor) = cx.add_window(Default::default(), |cx| {
7336 build_editor(buffer.clone(), settings, cx)
7337 });
7338
7339 editor.update(cx, |editor, cx| {
7340 struct Type1;
7341 struct Type2;
7342
7343 let buffer = buffer.read(cx).snapshot(cx);
7344
7345 let anchor_range = |range: Range<Point>| {
7346 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7347 };
7348
7349 editor.highlight_ranges::<Type1>(
7350 vec![
7351 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7352 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7353 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7354 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7355 ],
7356 Color::red(),
7357 cx,
7358 );
7359 editor.highlight_ranges::<Type2>(
7360 vec![
7361 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7362 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7363 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7364 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7365 ],
7366 Color::green(),
7367 cx,
7368 );
7369
7370 let snapshot = editor.snapshot(cx);
7371 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7372 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7373 &snapshot,
7374 );
7375 // Enforce a consistent ordering based on color without relying on the ordering of the
7376 // highlight's `TypeId` which is non-deterministic.
7377 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7378 assert_eq!(
7379 highlighted_ranges,
7380 &[
7381 (
7382 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7383 Color::green(),
7384 ),
7385 (
7386 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7387 Color::green(),
7388 ),
7389 (
7390 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7391 Color::red(),
7392 ),
7393 (
7394 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7395 Color::red(),
7396 ),
7397 ]
7398 );
7399 assert_eq!(
7400 editor.highlighted_ranges_in_range(
7401 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7402 &snapshot,
7403 ),
7404 &[(
7405 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7406 Color::red(),
7407 )]
7408 );
7409 });
7410 }
7411
7412 #[test]
7413 fn test_combine_syntax_and_fuzzy_match_highlights() {
7414 let string = "abcdefghijklmnop";
7415 let default = HighlightStyle::default();
7416 let syntax_ranges = [
7417 (
7418 0..3,
7419 HighlightStyle {
7420 color: Color::red(),
7421 ..default
7422 },
7423 ),
7424 (
7425 4..8,
7426 HighlightStyle {
7427 color: Color::green(),
7428 ..default
7429 },
7430 ),
7431 ];
7432 let match_indices = [4, 6, 7, 8];
7433 assert_eq!(
7434 combine_syntax_and_fuzzy_match_highlights(
7435 &string,
7436 default,
7437 syntax_ranges.into_iter(),
7438 &match_indices,
7439 ),
7440 &[
7441 (
7442 0..3,
7443 HighlightStyle {
7444 color: Color::red(),
7445 ..default
7446 },
7447 ),
7448 (
7449 4..5,
7450 HighlightStyle {
7451 color: Color::green(),
7452 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7453 ..default
7454 },
7455 ),
7456 (
7457 5..6,
7458 HighlightStyle {
7459 color: Color::green(),
7460 ..default
7461 },
7462 ),
7463 (
7464 6..8,
7465 HighlightStyle {
7466 color: Color::green(),
7467 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7468 ..default
7469 },
7470 ),
7471 (
7472 8..9,
7473 HighlightStyle {
7474 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7475 ..default
7476 },
7477 ),
7478 ]
7479 );
7480 }
7481
7482 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7483 let point = DisplayPoint::new(row as u32, column as u32);
7484 point..point
7485 }
7486
7487 fn build_editor(
7488 buffer: ModelHandle<MultiBuffer>,
7489 settings: EditorSettings,
7490 cx: &mut ViewContext<Editor>,
7491 ) -> Editor {
7492 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7493 }
7494}
7495
7496trait RangeExt<T> {
7497 fn sorted(&self) -> Range<T>;
7498 fn to_inclusive(&self) -> RangeInclusive<T>;
7499}
7500
7501impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7502 fn sorted(&self) -> Self {
7503 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7504 }
7505
7506 fn to_inclusive(&self) -> RangeInclusive<T> {
7507 self.start.clone()..=self.end.clone()
7508 }
7509}