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::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 std::{
46 any::TypeId,
47 cmp::{self, Ordering, Reverse},
48 iter::{self, FromIterator},
49 mem,
50 ops::{Deref, Range, RangeInclusive, Sub},
51 sync::Arc,
52 time::{Duration, Instant},
53};
54pub use sum_tree::Bias;
55use text::rope::TextDimension;
56use theme::{DiagnosticStyle, EditorStyle};
57use util::{post_inc, ResultExt, TryFutureExt};
58use workspace::{ItemNavHistory, PathOpener, Workspace};
59
60const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
61const MAX_LINE_LEN: usize = 1024;
62const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
63
64action!(Cancel);
65action!(Backspace);
66action!(Delete);
67action!(Input, String);
68action!(Newline);
69action!(Tab);
70action!(Outdent);
71action!(DeleteLine);
72action!(DeleteToPreviousWordBoundary);
73action!(DeleteToNextWordBoundary);
74action!(DeleteToBeginningOfLine);
75action!(DeleteToEndOfLine);
76action!(CutToEndOfLine);
77action!(DuplicateLine);
78action!(MoveLineUp);
79action!(MoveLineDown);
80action!(Cut);
81action!(Copy);
82action!(Paste);
83action!(Undo);
84action!(Redo);
85action!(MoveUp);
86action!(MoveDown);
87action!(MoveLeft);
88action!(MoveRight);
89action!(MoveToPreviousWordBoundary);
90action!(MoveToNextWordBoundary);
91action!(MoveToBeginningOfLine);
92action!(MoveToEndOfLine);
93action!(MoveToBeginning);
94action!(MoveToEnd);
95action!(SelectUp);
96action!(SelectDown);
97action!(SelectLeft);
98action!(SelectRight);
99action!(SelectToPreviousWordBoundary);
100action!(SelectToNextWordBoundary);
101action!(SelectToBeginningOfLine, bool);
102action!(SelectToEndOfLine);
103action!(SelectToBeginning);
104action!(SelectToEnd);
105action!(SelectAll);
106action!(SelectLine);
107action!(SplitSelectionIntoLines);
108action!(AddSelectionAbove);
109action!(AddSelectionBelow);
110action!(SelectNext, bool);
111action!(ToggleComments);
112action!(SelectLargerSyntaxNode);
113action!(SelectSmallerSyntaxNode);
114action!(MoveToEnclosingBracket);
115action!(ShowNextDiagnostic);
116action!(GoToDefinition);
117action!(PageUp);
118action!(PageDown);
119action!(Fold);
120action!(Unfold);
121action!(FoldSelectedRanges);
122action!(Scroll, Vector2F);
123action!(Select, SelectPhase);
124action!(ShowCompletions);
125action!(ConfirmCompletion);
126
127pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
128 path_openers.push(Box::new(items::BufferOpener));
129 cx.add_bindings(vec![
130 Binding::new("escape", Cancel, Some("Editor")),
131 Binding::new("backspace", Backspace, Some("Editor")),
132 Binding::new("ctrl-h", Backspace, Some("Editor")),
133 Binding::new("delete", Delete, Some("Editor")),
134 Binding::new("ctrl-d", Delete, Some("Editor")),
135 Binding::new("enter", Newline, Some("Editor && mode == full")),
136 Binding::new(
137 "alt-enter",
138 Input("\n".into()),
139 Some("Editor && mode == auto_height"),
140 ),
141 Binding::new("enter", ConfirmCompletion, Some("Editor && completing")),
142 Binding::new("tab", Tab, Some("Editor")),
143 Binding::new("shift-tab", Outdent, Some("Editor")),
144 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
145 Binding::new(
146 "alt-backspace",
147 DeleteToPreviousWordBoundary,
148 Some("Editor"),
149 ),
150 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
151 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
152 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
153 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
154 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
155 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
156 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
157 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
158 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
159 Binding::new("cmd-x", Cut, Some("Editor")),
160 Binding::new("cmd-c", Copy, Some("Editor")),
161 Binding::new("cmd-v", Paste, Some("Editor")),
162 Binding::new("cmd-z", Undo, Some("Editor")),
163 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
164 Binding::new("up", MoveUp, Some("Editor")),
165 Binding::new("down", MoveDown, Some("Editor")),
166 Binding::new("left", MoveLeft, Some("Editor")),
167 Binding::new("right", MoveRight, Some("Editor")),
168 Binding::new("ctrl-p", MoveUp, Some("Editor")),
169 Binding::new("ctrl-n", MoveDown, Some("Editor")),
170 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
171 Binding::new("ctrl-f", MoveRight, Some("Editor")),
172 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
173 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
174 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
175 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
176 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
177 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
178 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
179 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
180 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
181 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
182 Binding::new("shift-up", SelectUp, Some("Editor")),
183 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
184 Binding::new("shift-down", SelectDown, Some("Editor")),
185 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
186 Binding::new("shift-left", SelectLeft, Some("Editor")),
187 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
188 Binding::new("shift-right", SelectRight, Some("Editor")),
189 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
190 Binding::new(
191 "alt-shift-left",
192 SelectToPreviousWordBoundary,
193 Some("Editor"),
194 ),
195 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
196 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
197 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
198 Binding::new(
199 "cmd-shift-left",
200 SelectToBeginningOfLine(true),
201 Some("Editor"),
202 ),
203 Binding::new(
204 "ctrl-shift-A",
205 SelectToBeginningOfLine(true),
206 Some("Editor"),
207 ),
208 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
209 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
210 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
211 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
212 Binding::new("cmd-a", SelectAll, Some("Editor")),
213 Binding::new("cmd-l", SelectLine, Some("Editor")),
214 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
215 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
216 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
217 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
218 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
219 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
220 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
221 Binding::new("cmd-/", ToggleComments, Some("Editor")),
222 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
223 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
224 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
225 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
226 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
227 Binding::new("f12", GoToDefinition, Some("Editor")),
228 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
229 Binding::new("pageup", PageUp, Some("Editor")),
230 Binding::new("pagedown", PageDown, Some("Editor")),
231 Binding::new("alt-cmd-[", Fold, Some("Editor")),
232 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
233 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
234 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
235 ]);
236
237 cx.add_action(Editor::open_new);
238 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
239 cx.add_action(Editor::select);
240 cx.add_action(Editor::cancel);
241 cx.add_action(Editor::handle_input);
242 cx.add_action(Editor::newline);
243 cx.add_action(Editor::backspace);
244 cx.add_action(Editor::delete);
245 cx.add_action(Editor::tab);
246 cx.add_action(Editor::outdent);
247 cx.add_action(Editor::delete_line);
248 cx.add_action(Editor::delete_to_previous_word_boundary);
249 cx.add_action(Editor::delete_to_next_word_boundary);
250 cx.add_action(Editor::delete_to_beginning_of_line);
251 cx.add_action(Editor::delete_to_end_of_line);
252 cx.add_action(Editor::cut_to_end_of_line);
253 cx.add_action(Editor::duplicate_line);
254 cx.add_action(Editor::move_line_up);
255 cx.add_action(Editor::move_line_down);
256 cx.add_action(Editor::cut);
257 cx.add_action(Editor::copy);
258 cx.add_action(Editor::paste);
259 cx.add_action(Editor::undo);
260 cx.add_action(Editor::redo);
261 cx.add_action(Editor::move_up);
262 cx.add_action(Editor::move_down);
263 cx.add_action(Editor::move_left);
264 cx.add_action(Editor::move_right);
265 cx.add_action(Editor::move_to_previous_word_boundary);
266 cx.add_action(Editor::move_to_next_word_boundary);
267 cx.add_action(Editor::move_to_beginning_of_line);
268 cx.add_action(Editor::move_to_end_of_line);
269 cx.add_action(Editor::move_to_beginning);
270 cx.add_action(Editor::move_to_end);
271 cx.add_action(Editor::select_up);
272 cx.add_action(Editor::select_down);
273 cx.add_action(Editor::select_left);
274 cx.add_action(Editor::select_right);
275 cx.add_action(Editor::select_to_previous_word_boundary);
276 cx.add_action(Editor::select_to_next_word_boundary);
277 cx.add_action(Editor::select_to_beginning_of_line);
278 cx.add_action(Editor::select_to_end_of_line);
279 cx.add_action(Editor::select_to_beginning);
280 cx.add_action(Editor::select_to_end);
281 cx.add_action(Editor::select_all);
282 cx.add_action(Editor::select_line);
283 cx.add_action(Editor::split_selection_into_lines);
284 cx.add_action(Editor::add_selection_above);
285 cx.add_action(Editor::add_selection_below);
286 cx.add_action(Editor::select_next);
287 cx.add_action(Editor::toggle_comments);
288 cx.add_action(Editor::select_larger_syntax_node);
289 cx.add_action(Editor::select_smaller_syntax_node);
290 cx.add_action(Editor::move_to_enclosing_bracket);
291 cx.add_action(Editor::show_next_diagnostic);
292 cx.add_action(Editor::go_to_definition);
293 cx.add_action(Editor::page_up);
294 cx.add_action(Editor::page_down);
295 cx.add_action(Editor::fold);
296 cx.add_action(Editor::unfold);
297 cx.add_action(Editor::fold_selected_ranges);
298 cx.add_action(Editor::show_completions);
299 cx.add_action(|editor: &mut Editor, _: &ConfirmCompletion, cx| {
300 editor.confirm_completion(cx).detach_and_log_err(cx);
301 });
302}
303
304trait SelectionExt {
305 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
306 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
307 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
308 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
309 -> Range<u32>;
310}
311
312#[derive(Clone, Debug)]
313pub enum SelectPhase {
314 Begin {
315 position: DisplayPoint,
316 add: bool,
317 click_count: usize,
318 },
319 BeginColumnar {
320 position: DisplayPoint,
321 overshoot: u32,
322 },
323 Extend {
324 position: DisplayPoint,
325 click_count: usize,
326 },
327 Update {
328 position: DisplayPoint,
329 overshoot: u32,
330 scroll_position: Vector2F,
331 },
332 End,
333}
334
335#[derive(Clone, Debug)]
336enum SelectMode {
337 Character,
338 Word(Range<Anchor>),
339 Line(Range<Anchor>),
340 All,
341}
342
343#[derive(PartialEq, Eq)]
344pub enum Autoscroll {
345 Fit,
346 Center,
347 Newest,
348}
349
350#[derive(Copy, Clone, PartialEq, Eq)]
351pub enum EditorMode {
352 SingleLine,
353 AutoHeight { max_lines: usize },
354 Full,
355}
356
357#[derive(Clone)]
358pub struct EditorSettings {
359 pub tab_size: usize,
360 pub soft_wrap: SoftWrap,
361 pub style: EditorStyle,
362}
363
364#[derive(Clone)]
365pub enum SoftWrap {
366 None,
367 EditorWidth,
368 Column(u32),
369}
370
371pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
372
373pub struct Editor {
374 handle: WeakViewHandle<Self>,
375 buffer: ModelHandle<MultiBuffer>,
376 display_map: ModelHandle<DisplayMap>,
377 next_selection_id: usize,
378 selections: Arc<[Selection<Anchor>]>,
379 pending_selection: Option<PendingSelection>,
380 columnar_selection_tail: Option<Anchor>,
381 add_selections_state: Option<AddSelectionsState>,
382 select_next_state: Option<SelectNextState>,
383 selection_history:
384 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
385 autoclose_stack: Vec<BracketPairState>,
386 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
387 active_diagnostics: Option<ActiveDiagnosticGroup>,
388 scroll_position: Vector2F,
389 scroll_top_anchor: Option<Anchor>,
390 autoscroll_request: Option<Autoscroll>,
391 build_settings: BuildSettings,
392 focused: bool,
393 show_local_cursors: bool,
394 blink_epoch: usize,
395 blinking_paused: bool,
396 mode: EditorMode,
397 vertical_scroll_margin: f32,
398 placeholder_text: Option<Arc<str>>,
399 highlighted_rows: Option<Range<u32>>,
400 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
401 nav_history: Option<ItemNavHistory>,
402 completion_state: Option<CompletionState>,
403 completions_task: Option<Task<Option<()>>>,
404}
405
406pub struct EditorSnapshot {
407 pub mode: EditorMode,
408 pub display_snapshot: DisplaySnapshot,
409 pub placeholder_text: Option<Arc<str>>,
410 is_focused: bool,
411 scroll_position: Vector2F,
412 scroll_top_anchor: Option<Anchor>,
413}
414
415struct PendingSelection {
416 selection: Selection<Anchor>,
417 mode: SelectMode,
418}
419
420struct AddSelectionsState {
421 above: bool,
422 stack: Vec<usize>,
423}
424
425struct SelectNextState {
426 query: AhoCorasick,
427 wordwise: bool,
428 done: bool,
429}
430
431#[derive(Debug)]
432struct BracketPairState {
433 ranges: Vec<Range<Anchor>>,
434 pair: BracketPair,
435}
436
437struct CompletionState {
438 initial_position: Anchor,
439 completions: Arc<[Completion<Anchor>]>,
440 match_candidates: Vec<StringMatchCandidate>,
441 matches: Arc<[StringMatch]>,
442 selected_item: usize,
443 list: UniformListState,
444}
445
446impl CompletionState {
447 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
448 let mut matches = if let Some(query) = query {
449 fuzzy::match_strings(
450 &self.match_candidates,
451 query,
452 false,
453 100,
454 &Default::default(),
455 executor,
456 )
457 .await
458 } else {
459 self.match_candidates
460 .iter()
461 .enumerate()
462 .map(|(candidate_id, candidate)| StringMatch {
463 candidate_id,
464 score: Default::default(),
465 positions: Default::default(),
466 string: candidate.string.clone(),
467 })
468 .collect()
469 };
470 matches.sort_unstable_by_key(|mat| {
471 (
472 Reverse(OrderedFloat(mat.score)),
473 self.completions[mat.candidate_id].sort_key(),
474 )
475 });
476
477 for mat in &mut matches {
478 let filter_start = self.completions[mat.candidate_id].filter_range().start;
479 for position in &mut mat.positions {
480 *position += filter_start;
481 }
482 }
483
484 self.matches = matches.into();
485 }
486}
487
488#[derive(Debug)]
489struct ActiveDiagnosticGroup {
490 primary_range: Range<Anchor>,
491 primary_message: String,
492 blocks: HashMap<BlockId, Diagnostic>,
493 is_valid: bool,
494}
495
496#[derive(Serialize, Deserialize)]
497struct ClipboardSelection {
498 len: usize,
499 is_entire_line: bool,
500}
501
502pub struct NavigationData {
503 anchor: Anchor,
504 offset: usize,
505}
506
507impl Editor {
508 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
509 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
510 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
511 let mut view = Self::for_buffer(buffer, build_settings, cx);
512 view.mode = EditorMode::SingleLine;
513 view
514 }
515
516 pub fn auto_height(
517 max_lines: usize,
518 build_settings: BuildSettings,
519 cx: &mut ViewContext<Self>,
520 ) -> Self {
521 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
522 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
523 let mut view = Self::for_buffer(buffer, build_settings, cx);
524 view.mode = EditorMode::AutoHeight { max_lines };
525 view
526 }
527
528 pub fn for_buffer(
529 buffer: ModelHandle<MultiBuffer>,
530 build_settings: BuildSettings,
531 cx: &mut ViewContext<Self>,
532 ) -> Self {
533 Self::new(buffer, build_settings, cx)
534 }
535
536 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
537 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
538 clone.scroll_position = self.scroll_position;
539 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
540 clone.nav_history = self
541 .nav_history
542 .as_ref()
543 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
544 clone
545 }
546
547 pub fn new(
548 buffer: ModelHandle<MultiBuffer>,
549 build_settings: BuildSettings,
550 cx: &mut ViewContext<Self>,
551 ) -> Self {
552 let settings = build_settings(cx);
553 let display_map = cx.add_model(|cx| {
554 DisplayMap::new(
555 buffer.clone(),
556 settings.tab_size,
557 settings.style.text.font_id,
558 settings.style.text.font_size,
559 None,
560 cx,
561 )
562 });
563 cx.observe(&buffer, Self::on_buffer_changed).detach();
564 cx.subscribe(&buffer, Self::on_buffer_event).detach();
565 cx.observe(&display_map, Self::on_display_map_changed)
566 .detach();
567
568 let mut this = Self {
569 handle: cx.weak_handle(),
570 buffer,
571 display_map,
572 selections: Arc::from([]),
573 pending_selection: None,
574 columnar_selection_tail: None,
575 next_selection_id: 0,
576 add_selections_state: None,
577 select_next_state: None,
578 selection_history: Default::default(),
579 autoclose_stack: Default::default(),
580 select_larger_syntax_node_stack: Vec::new(),
581 active_diagnostics: None,
582 build_settings,
583 scroll_position: Vector2F::zero(),
584 scroll_top_anchor: None,
585 autoscroll_request: None,
586 focused: false,
587 show_local_cursors: false,
588 blink_epoch: 0,
589 blinking_paused: false,
590 mode: EditorMode::Full,
591 vertical_scroll_margin: 3.0,
592 placeholder_text: None,
593 highlighted_rows: None,
594 highlighted_ranges: Default::default(),
595 nav_history: None,
596 completion_state: None,
597 completions_task: None,
598 };
599 let selection = Selection {
600 id: post_inc(&mut this.next_selection_id),
601 start: 0,
602 end: 0,
603 reversed: false,
604 goal: SelectionGoal::None,
605 };
606 this.update_selections(vec![selection], None, cx);
607 this
608 }
609
610 pub fn open_new(
611 workspace: &mut Workspace,
612 _: &workspace::OpenNew,
613 cx: &mut ViewContext<Workspace>,
614 ) {
615 let buffer = cx
616 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
617 workspace.open_item(BufferItemHandle(buffer), cx);
618 }
619
620 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
621 self.buffer.read(cx).replica_id()
622 }
623
624 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
625 &self.buffer
626 }
627
628 pub fn title(&self, cx: &AppContext) -> String {
629 let filename = self
630 .buffer()
631 .read(cx)
632 .file(cx)
633 .map(|file| file.file_name(cx));
634 if let Some(name) = filename {
635 name.to_string_lossy().into()
636 } else {
637 "untitled".into()
638 }
639 }
640
641 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
642 EditorSnapshot {
643 mode: self.mode,
644 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
645 scroll_position: self.scroll_position,
646 scroll_top_anchor: self.scroll_top_anchor.clone(),
647 placeholder_text: self.placeholder_text.clone(),
648 is_focused: self
649 .handle
650 .upgrade(cx)
651 .map_or(false, |handle| handle.is_focused(cx)),
652 }
653 }
654
655 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
656 self.buffer.read(cx).language(cx)
657 }
658
659 pub fn set_placeholder_text(
660 &mut self,
661 placeholder_text: impl Into<Arc<str>>,
662 cx: &mut ViewContext<Self>,
663 ) {
664 self.placeholder_text = Some(placeholder_text.into());
665 cx.notify();
666 }
667
668 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
669 self.vertical_scroll_margin = margin_rows as f32;
670 cx.notify();
671 }
672
673 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
674 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
675
676 if scroll_position.y() == 0. {
677 self.scroll_top_anchor = None;
678 self.scroll_position = scroll_position;
679 } else {
680 let scroll_top_buffer_offset =
681 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
682 let anchor = map
683 .buffer_snapshot
684 .anchor_at(scroll_top_buffer_offset, Bias::Right);
685 self.scroll_position = vec2f(
686 scroll_position.x(),
687 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
688 );
689 self.scroll_top_anchor = Some(anchor);
690 }
691
692 cx.notify();
693 }
694
695 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
696 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
697 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
698 }
699
700 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
701 if max < self.scroll_position.x() {
702 self.scroll_position.set_x(max);
703 true
704 } else {
705 false
706 }
707 }
708
709 pub fn autoscroll_vertically(
710 &mut self,
711 viewport_height: f32,
712 line_height: f32,
713 cx: &mut ViewContext<Self>,
714 ) -> bool {
715 let visible_lines = viewport_height / line_height;
716 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
717 let mut scroll_position =
718 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
719 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
720 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
721 } else {
722 display_map.max_point().row().saturating_sub(1) as f32
723 };
724 if scroll_position.y() > max_scroll_top {
725 scroll_position.set_y(max_scroll_top);
726 self.set_scroll_position(scroll_position, cx);
727 }
728
729 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
730 autoscroll
731 } else {
732 return false;
733 };
734
735 let first_cursor_top;
736 let last_cursor_bottom;
737 if let Some(highlighted_rows) = &self.highlighted_rows {
738 first_cursor_top = highlighted_rows.start as f32;
739 last_cursor_bottom = first_cursor_top + 1.;
740 } else if autoscroll == Autoscroll::Newest {
741 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
742 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
743 last_cursor_bottom = first_cursor_top + 1.;
744 } else {
745 let selections = self.local_selections::<Point>(cx);
746 first_cursor_top = selections
747 .first()
748 .unwrap()
749 .head()
750 .to_display_point(&display_map)
751 .row() as f32;
752 last_cursor_bottom = selections
753 .last()
754 .unwrap()
755 .head()
756 .to_display_point(&display_map)
757 .row() as f32
758 + 1.0;
759 }
760
761 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
762 0.
763 } else {
764 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
765 };
766 if margin < 0.0 {
767 return false;
768 }
769
770 match autoscroll {
771 Autoscroll::Fit | Autoscroll::Newest => {
772 let margin = margin.min(self.vertical_scroll_margin);
773 let target_top = (first_cursor_top - margin).max(0.0);
774 let target_bottom = last_cursor_bottom + margin;
775 let start_row = scroll_position.y();
776 let end_row = start_row + visible_lines;
777
778 if target_top < start_row {
779 scroll_position.set_y(target_top);
780 self.set_scroll_position(scroll_position, cx);
781 } else if target_bottom >= end_row {
782 scroll_position.set_y(target_bottom - visible_lines);
783 self.set_scroll_position(scroll_position, cx);
784 }
785 }
786 Autoscroll::Center => {
787 scroll_position.set_y((first_cursor_top - margin).max(0.0));
788 self.set_scroll_position(scroll_position, cx);
789 }
790 }
791
792 true
793 }
794
795 pub fn autoscroll_horizontally(
796 &mut self,
797 start_row: u32,
798 viewport_width: f32,
799 scroll_width: f32,
800 max_glyph_width: f32,
801 layouts: &[text_layout::Line],
802 cx: &mut ViewContext<Self>,
803 ) -> bool {
804 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
805 let selections = self.local_selections::<Point>(cx);
806
807 let mut target_left;
808 let mut target_right;
809
810 if self.highlighted_rows.is_some() {
811 target_left = 0.0_f32;
812 target_right = 0.0_f32;
813 } else {
814 target_left = std::f32::INFINITY;
815 target_right = 0.0_f32;
816 for selection in selections {
817 let head = selection.head().to_display_point(&display_map);
818 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
819 let start_column = head.column().saturating_sub(3);
820 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
821 target_left = target_left.min(
822 layouts[(head.row() - start_row) as usize]
823 .x_for_index(start_column as usize),
824 );
825 target_right = target_right.max(
826 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
827 + max_glyph_width,
828 );
829 }
830 }
831 }
832
833 target_right = target_right.min(scroll_width);
834
835 if target_right - target_left > viewport_width {
836 return false;
837 }
838
839 let scroll_left = self.scroll_position.x() * max_glyph_width;
840 let scroll_right = scroll_left + viewport_width;
841
842 if target_left < scroll_left {
843 self.scroll_position.set_x(target_left / max_glyph_width);
844 true
845 } else if target_right > scroll_right {
846 self.scroll_position
847 .set_x((target_right - viewport_width) / max_glyph_width);
848 true
849 } else {
850 false
851 }
852 }
853
854 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
855 match phase {
856 SelectPhase::Begin {
857 position,
858 add,
859 click_count,
860 } => self.begin_selection(*position, *add, *click_count, cx),
861 SelectPhase::BeginColumnar {
862 position,
863 overshoot,
864 } => self.begin_columnar_selection(*position, *overshoot, cx),
865 SelectPhase::Extend {
866 position,
867 click_count,
868 } => self.extend_selection(*position, *click_count, cx),
869 SelectPhase::Update {
870 position,
871 overshoot,
872 scroll_position,
873 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
874 SelectPhase::End => self.end_selection(cx),
875 }
876 }
877
878 fn extend_selection(
879 &mut self,
880 position: DisplayPoint,
881 click_count: usize,
882 cx: &mut ViewContext<Self>,
883 ) {
884 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
885 let tail = self
886 .newest_selection::<usize>(&display_map.buffer_snapshot)
887 .tail();
888 self.begin_selection(position, false, click_count, cx);
889
890 let position = position.to_offset(&display_map, Bias::Left);
891 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
892 let pending = self.pending_selection.as_mut().unwrap();
893
894 if position >= tail {
895 pending.selection.start = tail_anchor.clone();
896 } else {
897 pending.selection.end = tail_anchor.clone();
898 pending.selection.reversed = true;
899 }
900
901 match &mut pending.mode {
902 SelectMode::Word(range) | SelectMode::Line(range) => {
903 *range = tail_anchor.clone()..tail_anchor
904 }
905 _ => {}
906 }
907 }
908
909 fn begin_selection(
910 &mut self,
911 position: DisplayPoint,
912 add: bool,
913 click_count: usize,
914 cx: &mut ViewContext<Self>,
915 ) {
916 if !self.focused {
917 cx.focus_self();
918 cx.emit(Event::Activate);
919 }
920
921 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
922 let buffer = &display_map.buffer_snapshot;
923 let newest_selection = self.newest_anchor_selection().unwrap().clone();
924
925 let start;
926 let end;
927 let mode;
928 match click_count {
929 1 => {
930 start = buffer.anchor_before(position.to_point(&display_map));
931 end = start.clone();
932 mode = SelectMode::Character;
933 }
934 2 => {
935 let range = movement::surrounding_word(&display_map, position);
936 start = buffer.anchor_before(range.start.to_point(&display_map));
937 end = buffer.anchor_before(range.end.to_point(&display_map));
938 mode = SelectMode::Word(start.clone()..end.clone());
939 }
940 3 => {
941 let position = display_map.clip_point(position, Bias::Left);
942 let line_start = movement::line_beginning(&display_map, position, false);
943 let mut next_line_start = line_start.clone();
944 *next_line_start.row_mut() += 1;
945 *next_line_start.column_mut() = 0;
946 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
947
948 start = buffer.anchor_before(line_start.to_point(&display_map));
949 end = buffer.anchor_before(next_line_start.to_point(&display_map));
950 mode = SelectMode::Line(start.clone()..end.clone());
951 }
952 _ => {
953 start = buffer.anchor_before(0);
954 end = buffer.anchor_before(buffer.len());
955 mode = SelectMode::All;
956 }
957 }
958
959 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
960
961 let selection = Selection {
962 id: post_inc(&mut self.next_selection_id),
963 start,
964 end,
965 reversed: false,
966 goal: SelectionGoal::None,
967 };
968
969 if !add {
970 self.update_selections::<usize>(Vec::new(), None, cx);
971 } else if click_count > 1 {
972 // Remove the newest selection since it was only added as part of this multi-click.
973 let mut selections = self.local_selections(cx);
974 selections.retain(|selection| selection.id != newest_selection.id);
975 self.update_selections::<usize>(selections, None, cx)
976 }
977
978 self.pending_selection = Some(PendingSelection { selection, mode });
979
980 cx.notify();
981 }
982
983 fn begin_columnar_selection(
984 &mut self,
985 position: DisplayPoint,
986 overshoot: u32,
987 cx: &mut ViewContext<Self>,
988 ) {
989 if !self.focused {
990 cx.focus_self();
991 cx.emit(Event::Activate);
992 }
993
994 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
995 let tail = self
996 .newest_selection::<Point>(&display_map.buffer_snapshot)
997 .tail();
998 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
999
1000 self.select_columns(
1001 tail.to_display_point(&display_map),
1002 position,
1003 overshoot,
1004 &display_map,
1005 cx,
1006 );
1007 }
1008
1009 fn update_selection(
1010 &mut self,
1011 position: DisplayPoint,
1012 overshoot: u32,
1013 scroll_position: Vector2F,
1014 cx: &mut ViewContext<Self>,
1015 ) {
1016 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1017
1018 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1019 let tail = tail.to_display_point(&display_map);
1020 self.select_columns(tail, position, overshoot, &display_map, cx);
1021 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1022 let buffer = self.buffer.read(cx).snapshot(cx);
1023 let head;
1024 let tail;
1025 match mode {
1026 SelectMode::Character => {
1027 head = position.to_point(&display_map);
1028 tail = selection.tail().to_point(&buffer);
1029 }
1030 SelectMode::Word(original_range) => {
1031 let original_display_range = original_range.start.to_display_point(&display_map)
1032 ..original_range.end.to_display_point(&display_map);
1033 let original_buffer_range = original_display_range.start.to_point(&display_map)
1034 ..original_display_range.end.to_point(&display_map);
1035 if movement::is_inside_word(&display_map, position)
1036 || original_display_range.contains(&position)
1037 {
1038 let word_range = movement::surrounding_word(&display_map, position);
1039 if word_range.start < original_display_range.start {
1040 head = word_range.start.to_point(&display_map);
1041 } else {
1042 head = word_range.end.to_point(&display_map);
1043 }
1044 } else {
1045 head = position.to_point(&display_map);
1046 }
1047
1048 if head <= original_buffer_range.start {
1049 tail = original_buffer_range.end;
1050 } else {
1051 tail = original_buffer_range.start;
1052 }
1053 }
1054 SelectMode::Line(original_range) => {
1055 let original_display_range = original_range.start.to_display_point(&display_map)
1056 ..original_range.end.to_display_point(&display_map);
1057 let original_buffer_range = original_display_range.start.to_point(&display_map)
1058 ..original_display_range.end.to_point(&display_map);
1059 let line_start = movement::line_beginning(&display_map, position, false);
1060 let mut next_line_start = line_start.clone();
1061 *next_line_start.row_mut() += 1;
1062 *next_line_start.column_mut() = 0;
1063 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1064
1065 if line_start < original_display_range.start {
1066 head = line_start.to_point(&display_map);
1067 } else {
1068 head = next_line_start.to_point(&display_map);
1069 }
1070
1071 if head <= original_buffer_range.start {
1072 tail = original_buffer_range.end;
1073 } else {
1074 tail = original_buffer_range.start;
1075 }
1076 }
1077 SelectMode::All => {
1078 return;
1079 }
1080 };
1081
1082 if head < tail {
1083 selection.start = buffer.anchor_before(head);
1084 selection.end = buffer.anchor_before(tail);
1085 selection.reversed = true;
1086 } else {
1087 selection.start = buffer.anchor_before(tail);
1088 selection.end = buffer.anchor_before(head);
1089 selection.reversed = false;
1090 }
1091 } else {
1092 log::error!("update_selection dispatched with no pending selection");
1093 return;
1094 }
1095
1096 self.set_scroll_position(scroll_position, cx);
1097 cx.notify();
1098 }
1099
1100 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1101 self.columnar_selection_tail.take();
1102 if self.pending_selection.is_some() {
1103 let selections = self.local_selections::<usize>(cx);
1104 self.update_selections(selections, None, cx);
1105 }
1106 }
1107
1108 fn select_columns(
1109 &mut self,
1110 tail: DisplayPoint,
1111 head: DisplayPoint,
1112 overshoot: u32,
1113 display_map: &DisplaySnapshot,
1114 cx: &mut ViewContext<Self>,
1115 ) {
1116 let start_row = cmp::min(tail.row(), head.row());
1117 let end_row = cmp::max(tail.row(), head.row());
1118 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1119 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1120 let reversed = start_column < tail.column();
1121
1122 let selections = (start_row..=end_row)
1123 .filter_map(|row| {
1124 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1125 let start = display_map
1126 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1127 .to_point(&display_map);
1128 let end = display_map
1129 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1130 .to_point(&display_map);
1131 Some(Selection {
1132 id: post_inc(&mut self.next_selection_id),
1133 start,
1134 end,
1135 reversed,
1136 goal: SelectionGoal::None,
1137 })
1138 } else {
1139 None
1140 }
1141 })
1142 .collect::<Vec<_>>();
1143
1144 self.update_selections(selections, None, cx);
1145 cx.notify();
1146 }
1147
1148 pub fn is_selecting(&self) -> bool {
1149 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1150 }
1151
1152 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1153 if self.hide_completions(cx).is_some() {
1154 return;
1155 }
1156
1157 if self.mode != EditorMode::Full {
1158 cx.propagate_action();
1159 return;
1160 }
1161
1162 if self.active_diagnostics.is_some() {
1163 self.dismiss_diagnostics(cx);
1164 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1165 let buffer = self.buffer.read(cx).snapshot(cx);
1166 let selection = Selection {
1167 id: selection.id,
1168 start: selection.start.to_point(&buffer),
1169 end: selection.end.to_point(&buffer),
1170 reversed: selection.reversed,
1171 goal: selection.goal,
1172 };
1173 if self.local_selections::<Point>(cx).is_empty() {
1174 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1175 }
1176 } else {
1177 let buffer = self.buffer.read(cx).snapshot(cx);
1178 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1179 if self.selection_count() == 1 {
1180 if oldest_selection.is_empty() {
1181 cx.propagate_action();
1182 return;
1183 }
1184
1185 oldest_selection.start = oldest_selection.head().clone();
1186 oldest_selection.end = oldest_selection.head().clone();
1187 }
1188 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1189 }
1190 }
1191
1192 #[cfg(any(test, feature = "test-support"))]
1193 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1194 &self,
1195 cx: &mut MutableAppContext,
1196 ) -> Vec<Range<D>> {
1197 self.local_selections::<D>(cx)
1198 .iter()
1199 .map(|s| {
1200 if s.reversed {
1201 s.end.clone()..s.start.clone()
1202 } else {
1203 s.start.clone()..s.end.clone()
1204 }
1205 })
1206 .collect()
1207 }
1208
1209 #[cfg(any(test, feature = "test-support"))]
1210 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1211 let display_map = self
1212 .display_map
1213 .update(cx, |display_map, cx| display_map.snapshot(cx));
1214 self.selections
1215 .iter()
1216 .chain(
1217 self.pending_selection
1218 .as_ref()
1219 .map(|pending| &pending.selection),
1220 )
1221 .map(|s| {
1222 if s.reversed {
1223 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1224 } else {
1225 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1226 }
1227 })
1228 .collect()
1229 }
1230
1231 pub fn select_ranges<I, T>(
1232 &mut self,
1233 ranges: I,
1234 autoscroll: Option<Autoscroll>,
1235 cx: &mut ViewContext<Self>,
1236 ) where
1237 I: IntoIterator<Item = Range<T>>,
1238 T: ToOffset,
1239 {
1240 let buffer = self.buffer.read(cx).snapshot(cx);
1241 let selections = ranges
1242 .into_iter()
1243 .map(|range| {
1244 let mut start = range.start.to_offset(&buffer);
1245 let mut end = range.end.to_offset(&buffer);
1246 let reversed = if start > end {
1247 mem::swap(&mut start, &mut end);
1248 true
1249 } else {
1250 false
1251 };
1252 Selection {
1253 id: post_inc(&mut self.next_selection_id),
1254 start,
1255 end,
1256 reversed,
1257 goal: SelectionGoal::None,
1258 }
1259 })
1260 .collect::<Vec<_>>();
1261 self.update_selections(selections, autoscroll, cx);
1262 }
1263
1264 #[cfg(any(test, feature = "test-support"))]
1265 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1266 where
1267 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1268 {
1269 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1270 let selections = ranges
1271 .into_iter()
1272 .map(|range| {
1273 let mut start = range.start;
1274 let mut end = range.end;
1275 let reversed = if start > end {
1276 mem::swap(&mut start, &mut end);
1277 true
1278 } else {
1279 false
1280 };
1281 Selection {
1282 id: post_inc(&mut self.next_selection_id),
1283 start: start.to_point(&display_map),
1284 end: end.to_point(&display_map),
1285 reversed,
1286 goal: SelectionGoal::None,
1287 }
1288 })
1289 .collect();
1290 self.update_selections(selections, None, cx);
1291 }
1292
1293 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1294 let text = action.0.as_ref();
1295 if !self.skip_autoclose_end(text, cx) {
1296 self.start_transaction(cx);
1297 self.insert(text, cx);
1298 self.autoclose_pairs(cx);
1299 self.end_transaction(cx);
1300 self.trigger_completion_on_input(text, cx);
1301 }
1302 }
1303
1304 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1305 self.start_transaction(cx);
1306 let mut old_selections = SmallVec::<[_; 32]>::new();
1307 {
1308 let selections = self.local_selections::<Point>(cx);
1309 let buffer = self.buffer.read(cx).snapshot(cx);
1310 for selection in selections.iter() {
1311 let start_point = selection.start;
1312 let indent = buffer
1313 .indent_column_for_line(start_point.row)
1314 .min(start_point.column);
1315 let start = selection.start.to_offset(&buffer);
1316 let end = selection.end.to_offset(&buffer);
1317
1318 let mut insert_extra_newline = false;
1319 if let Some(language) = buffer.language() {
1320 let leading_whitespace_len = buffer
1321 .reversed_chars_at(start)
1322 .take_while(|c| c.is_whitespace() && *c != '\n')
1323 .map(|c| c.len_utf8())
1324 .sum::<usize>();
1325
1326 let trailing_whitespace_len = buffer
1327 .chars_at(end)
1328 .take_while(|c| c.is_whitespace() && *c != '\n')
1329 .map(|c| c.len_utf8())
1330 .sum::<usize>();
1331
1332 insert_extra_newline = language.brackets().iter().any(|pair| {
1333 let pair_start = pair.start.trim_end();
1334 let pair_end = pair.end.trim_start();
1335
1336 pair.newline
1337 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1338 && buffer.contains_str_at(
1339 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1340 pair_start,
1341 )
1342 });
1343 }
1344
1345 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1346 }
1347 }
1348
1349 self.buffer.update(cx, |buffer, cx| {
1350 let mut delta = 0_isize;
1351 let mut pending_edit: Option<PendingEdit> = None;
1352 for (_, range, indent, insert_extra_newline) in &old_selections {
1353 if pending_edit.as_ref().map_or(false, |pending| {
1354 pending.indent != *indent
1355 || pending.insert_extra_newline != *insert_extra_newline
1356 }) {
1357 let pending = pending_edit.take().unwrap();
1358 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1359 new_text.push('\n');
1360 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1361 if pending.insert_extra_newline {
1362 new_text = new_text.repeat(2);
1363 }
1364 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1365 delta += pending.delta;
1366 }
1367
1368 let start = (range.start as isize + delta) as usize;
1369 let end = (range.end as isize + delta) as usize;
1370 let mut text_len = *indent as usize + 1;
1371 if *insert_extra_newline {
1372 text_len *= 2;
1373 }
1374
1375 let pending = pending_edit.get_or_insert_with(Default::default);
1376 pending.delta += text_len as isize - (end - start) as isize;
1377 pending.indent = *indent;
1378 pending.insert_extra_newline = *insert_extra_newline;
1379 pending.ranges.push(start..end);
1380 }
1381
1382 let pending = pending_edit.unwrap();
1383 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1384 new_text.push('\n');
1385 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1386 if pending.insert_extra_newline {
1387 new_text = new_text.repeat(2);
1388 }
1389 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1390
1391 let buffer = buffer.read(cx);
1392 self.selections = self
1393 .selections
1394 .iter()
1395 .cloned()
1396 .zip(old_selections)
1397 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1398 if insert_extra_newline {
1399 let mut cursor = new_selection.start.to_point(&buffer);
1400 cursor.row -= 1;
1401 cursor.column = buffer.line_len(cursor.row);
1402 let anchor = buffer.anchor_after(cursor);
1403 new_selection.start = anchor.clone();
1404 new_selection.end = anchor;
1405 }
1406 new_selection
1407 })
1408 .collect();
1409 });
1410
1411 self.request_autoscroll(Autoscroll::Fit, cx);
1412 self.end_transaction(cx);
1413
1414 #[derive(Default)]
1415 struct PendingEdit {
1416 indent: u32,
1417 insert_extra_newline: bool,
1418 delta: isize,
1419 ranges: SmallVec<[Range<usize>; 32]>,
1420 }
1421 }
1422
1423 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1424 self.start_transaction(cx);
1425 let old_selections = self.local_selections::<usize>(cx);
1426 self.buffer.update(cx, |buffer, cx| {
1427 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1428 buffer.edit_with_autoindent(edit_ranges, text, cx);
1429 });
1430
1431 let selections = self.local_selections::<usize>(cx);
1432 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1433 self.end_transaction(cx);
1434 }
1435
1436 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1437 if let Some(selection) = self.newest_anchor_selection() {
1438 if self
1439 .buffer
1440 .read(cx)
1441 .is_completion_trigger(selection.head(), text, cx)
1442 {
1443 self.show_completions(&ShowCompletions, cx);
1444 } else {
1445 self.hide_completions(cx);
1446 }
1447 }
1448 }
1449
1450 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1451 let selections = self.local_selections::<usize>(cx);
1452 let mut bracket_pair_state = None;
1453 let mut new_selections = None;
1454 self.buffer.update(cx, |buffer, cx| {
1455 let mut snapshot = buffer.snapshot(cx);
1456 let left_biased_selections = selections
1457 .iter()
1458 .map(|selection| Selection {
1459 id: selection.id,
1460 start: snapshot.anchor_before(selection.start),
1461 end: snapshot.anchor_before(selection.end),
1462 reversed: selection.reversed,
1463 goal: selection.goal,
1464 })
1465 .collect::<Vec<_>>();
1466
1467 let autoclose_pair = snapshot.language().and_then(|language| {
1468 let first_selection_start = selections.first().unwrap().start;
1469 let pair = language.brackets().iter().find(|pair| {
1470 snapshot.contains_str_at(
1471 first_selection_start.saturating_sub(pair.start.len()),
1472 &pair.start,
1473 )
1474 });
1475 pair.and_then(|pair| {
1476 let should_autoclose = selections[1..].iter().all(|selection| {
1477 snapshot.contains_str_at(
1478 selection.start.saturating_sub(pair.start.len()),
1479 &pair.start,
1480 )
1481 });
1482
1483 if should_autoclose {
1484 Some(pair.clone())
1485 } else {
1486 None
1487 }
1488 })
1489 });
1490
1491 if let Some(pair) = autoclose_pair {
1492 let selection_ranges = selections
1493 .iter()
1494 .map(|selection| {
1495 let start = selection.start.to_offset(&snapshot);
1496 start..start
1497 })
1498 .collect::<SmallVec<[_; 32]>>();
1499
1500 buffer.edit(selection_ranges, &pair.end, cx);
1501 snapshot = buffer.snapshot(cx);
1502
1503 new_selections = Some(
1504 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1505 .collect::<Vec<_>>(),
1506 );
1507
1508 if pair.end.len() == 1 {
1509 let mut delta = 0;
1510 bracket_pair_state = Some(BracketPairState {
1511 ranges: selections
1512 .iter()
1513 .map(move |selection| {
1514 let offset = selection.start + delta;
1515 delta += 1;
1516 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1517 })
1518 .collect(),
1519 pair,
1520 });
1521 }
1522 }
1523 });
1524
1525 if let Some(new_selections) = new_selections {
1526 self.update_selections(new_selections, None, cx);
1527 }
1528 if let Some(bracket_pair_state) = bracket_pair_state {
1529 self.autoclose_stack.push(bracket_pair_state);
1530 }
1531 }
1532
1533 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1534 let old_selections = self.local_selections::<usize>(cx);
1535 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1536 autoclose_pair
1537 } else {
1538 return false;
1539 };
1540 if text != autoclose_pair.pair.end {
1541 return false;
1542 }
1543
1544 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1545
1546 let buffer = self.buffer.read(cx).snapshot(cx);
1547 if old_selections
1548 .iter()
1549 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1550 .all(|(selection, autoclose_range)| {
1551 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1552 selection.is_empty() && selection.start == autoclose_range_end
1553 })
1554 {
1555 let new_selections = old_selections
1556 .into_iter()
1557 .map(|selection| {
1558 let cursor = selection.start + 1;
1559 Selection {
1560 id: selection.id,
1561 start: cursor,
1562 end: cursor,
1563 reversed: false,
1564 goal: SelectionGoal::None,
1565 }
1566 })
1567 .collect();
1568 self.autoclose_stack.pop();
1569 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1570 true
1571 } else {
1572 false
1573 }
1574 }
1575
1576 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1577 let offset = position.to_offset(buffer);
1578 let (word_range, kind) = buffer.surrounding_word(offset);
1579 if offset > word_range.start && kind == Some(CharKind::Word) {
1580 Some(
1581 buffer
1582 .text_for_range(word_range.start..offset)
1583 .collect::<String>(),
1584 )
1585 } else {
1586 None
1587 }
1588 }
1589
1590 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1591 let position = if let Some(selection) = self.newest_anchor_selection() {
1592 selection.head()
1593 } else {
1594 return;
1595 };
1596
1597 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1598 let completions = self
1599 .buffer
1600 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1601
1602 self.completions_task = Some(cx.spawn_weak(|this, mut cx| {
1603 async move {
1604 let completions = completions.await?;
1605
1606 let mut completion_state = CompletionState {
1607 initial_position: position,
1608 match_candidates: completions
1609 .iter()
1610 .enumerate()
1611 .map(|(id, completion)| {
1612 StringMatchCandidate::new(
1613 id,
1614 completion.label()[completion.filter_range()].into(),
1615 )
1616 })
1617 .collect(),
1618 completions: completions.into(),
1619 matches: Vec::new().into(),
1620 selected_item: 0,
1621 list: Default::default(),
1622 };
1623
1624 completion_state
1625 .filter(query.as_deref(), cx.background())
1626 .await;
1627
1628 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1629 this.update(&mut cx, |this, cx| {
1630 if completion_state.matches.is_empty() {
1631 this.hide_completions(cx);
1632 } else if this.focused {
1633 this.completion_state = Some(completion_state);
1634 }
1635
1636 cx.notify();
1637 });
1638 }
1639 Ok::<_, anyhow::Error>(())
1640 }
1641 .log_err()
1642 }));
1643 }
1644
1645 fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionState> {
1646 cx.notify();
1647 self.completions_task.take();
1648 self.completion_state.take()
1649 }
1650
1651 fn confirm_completion(&mut self, cx: &mut ViewContext<Self>) -> Task<Result<()>> {
1652 if let Some(completion_state) = self.hide_completions(cx) {
1653 if let Some(completion) = completion_state
1654 .matches
1655 .get(completion_state.selected_item)
1656 .and_then(|mat| completion_state.completions.get(mat.candidate_id))
1657 {
1658 return self.buffer.update(cx, |buffer, cx| {
1659 buffer.apply_completion(completion.clone(), cx)
1660 });
1661 }
1662 }
1663
1664 Task::ready(Ok(()))
1665 }
1666
1667 pub fn has_completions(&self) -> bool {
1668 self.completion_state.is_some()
1669 }
1670
1671 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1672 self.completion_state.as_ref().map(|state| {
1673 let build_settings = self.build_settings.clone();
1674 let settings = build_settings(cx);
1675 let completions = state.completions.clone();
1676 let matches = state.matches.clone();
1677 let selected_item = state.selected_item;
1678 UniformList::new(
1679 state.list.clone(),
1680 matches.len(),
1681 move |range, items, cx| {
1682 let settings = build_settings(cx);
1683 let start_ix = range.start;
1684 let label_style = LabelStyle {
1685 text: settings.style.text.clone(),
1686 highlight_text: settings
1687 .style
1688 .text
1689 .clone()
1690 .highlight(settings.style.autocomplete.match_highlight, cx.font_cache())
1691 .log_err(),
1692 };
1693 for (ix, mat) in matches[range].iter().enumerate() {
1694 let item_style = if start_ix + ix == selected_item {
1695 settings.style.autocomplete.selected_item
1696 } else {
1697 settings.style.autocomplete.item
1698 };
1699 let completion = &completions[mat.candidate_id];
1700 items.push(
1701 Label::new(completion.label().to_string(), label_style.clone())
1702 .with_highlights(mat.positions.clone())
1703 .contained()
1704 .with_style(item_style)
1705 .boxed(),
1706 );
1707 }
1708 },
1709 )
1710 .with_width_from_item(
1711 state
1712 .matches
1713 .iter()
1714 .enumerate()
1715 .max_by_key(|(_, mat)| {
1716 state.completions[mat.candidate_id].label().chars().count()
1717 })
1718 .map(|(ix, _)| ix),
1719 )
1720 .contained()
1721 .with_style(settings.style.autocomplete.container)
1722 .boxed()
1723 })
1724 }
1725
1726 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1727 self.start_transaction(cx);
1728 self.select_all(&SelectAll, cx);
1729 self.insert("", cx);
1730 self.end_transaction(cx);
1731 }
1732
1733 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1734 self.start_transaction(cx);
1735 let mut selections = self.local_selections::<Point>(cx);
1736 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1737 for selection in &mut selections {
1738 if selection.is_empty() {
1739 let head = selection.head().to_display_point(&display_map);
1740 let cursor = movement::left(&display_map, head)
1741 .unwrap()
1742 .to_point(&display_map);
1743 selection.set_head(cursor);
1744 selection.goal = SelectionGoal::None;
1745 }
1746 }
1747 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1748 self.insert("", cx);
1749 self.end_transaction(cx);
1750 }
1751
1752 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1753 self.start_transaction(cx);
1754 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1755 let mut selections = self.local_selections::<Point>(cx);
1756 for selection in &mut selections {
1757 if selection.is_empty() {
1758 let head = selection.head().to_display_point(&display_map);
1759 let cursor = movement::right(&display_map, head)
1760 .unwrap()
1761 .to_point(&display_map);
1762 selection.set_head(cursor);
1763 selection.goal = SelectionGoal::None;
1764 }
1765 }
1766 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1767 self.insert(&"", cx);
1768 self.end_transaction(cx);
1769 }
1770
1771 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1772 self.start_transaction(cx);
1773 let tab_size = (self.build_settings)(cx).tab_size;
1774 let mut selections = self.local_selections::<Point>(cx);
1775 let mut last_indent = None;
1776 self.buffer.update(cx, |buffer, cx| {
1777 for selection in &mut selections {
1778 if selection.is_empty() {
1779 let char_column = buffer
1780 .read(cx)
1781 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1782 .flat_map(str::chars)
1783 .count();
1784 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1785 buffer.edit(
1786 [selection.start..selection.start],
1787 " ".repeat(chars_to_next_tab_stop),
1788 cx,
1789 );
1790 selection.start.column += chars_to_next_tab_stop as u32;
1791 selection.end = selection.start;
1792 } else {
1793 let mut start_row = selection.start.row;
1794 let mut end_row = selection.end.row + 1;
1795
1796 // If a selection ends at the beginning of a line, don't indent
1797 // that last line.
1798 if selection.end.column == 0 {
1799 end_row -= 1;
1800 }
1801
1802 // Avoid re-indenting a row that has already been indented by a
1803 // previous selection, but still update this selection's column
1804 // to reflect that indentation.
1805 if let Some((last_indent_row, last_indent_len)) = last_indent {
1806 if last_indent_row == selection.start.row {
1807 selection.start.column += last_indent_len;
1808 start_row += 1;
1809 }
1810 if last_indent_row == selection.end.row {
1811 selection.end.column += last_indent_len;
1812 }
1813 }
1814
1815 for row in start_row..end_row {
1816 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1817 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1818 let row_start = Point::new(row, 0);
1819 buffer.edit(
1820 [row_start..row_start],
1821 " ".repeat(columns_to_next_tab_stop),
1822 cx,
1823 );
1824
1825 // Update this selection's endpoints to reflect the indentation.
1826 if row == selection.start.row {
1827 selection.start.column += columns_to_next_tab_stop as u32;
1828 }
1829 if row == selection.end.row {
1830 selection.end.column += columns_to_next_tab_stop as u32;
1831 }
1832
1833 last_indent = Some((row, columns_to_next_tab_stop as u32));
1834 }
1835 }
1836 }
1837 });
1838
1839 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1840 self.end_transaction(cx);
1841 }
1842
1843 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1844 self.start_transaction(cx);
1845 let tab_size = (self.build_settings)(cx).tab_size;
1846 let selections = self.local_selections::<Point>(cx);
1847 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1848 let mut deletion_ranges = Vec::new();
1849 let mut last_outdent = None;
1850 {
1851 let buffer = self.buffer.read(cx).read(cx);
1852 for selection in &selections {
1853 let mut rows = selection.spanned_rows(false, &display_map);
1854
1855 // Avoid re-outdenting a row that has already been outdented by a
1856 // previous selection.
1857 if let Some(last_row) = last_outdent {
1858 if last_row == rows.start {
1859 rows.start += 1;
1860 }
1861 }
1862
1863 for row in rows {
1864 let column = buffer.indent_column_for_line(row) as usize;
1865 if column > 0 {
1866 let mut deletion_len = (column % tab_size) as u32;
1867 if deletion_len == 0 {
1868 deletion_len = tab_size as u32;
1869 }
1870 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1871 last_outdent = Some(row);
1872 }
1873 }
1874 }
1875 }
1876 self.buffer.update(cx, |buffer, cx| {
1877 buffer.edit(deletion_ranges, "", cx);
1878 });
1879
1880 self.update_selections(
1881 self.local_selections::<usize>(cx),
1882 Some(Autoscroll::Fit),
1883 cx,
1884 );
1885 self.end_transaction(cx);
1886 }
1887
1888 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1889 self.start_transaction(cx);
1890
1891 let selections = self.local_selections::<Point>(cx);
1892 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1893 let buffer = self.buffer.read(cx).snapshot(cx);
1894
1895 let mut new_cursors = Vec::new();
1896 let mut edit_ranges = Vec::new();
1897 let mut selections = selections.iter().peekable();
1898 while let Some(selection) = selections.next() {
1899 let mut rows = selection.spanned_rows(false, &display_map);
1900 let goal_display_column = selection.head().to_display_point(&display_map).column();
1901
1902 // Accumulate contiguous regions of rows that we want to delete.
1903 while let Some(next_selection) = selections.peek() {
1904 let next_rows = next_selection.spanned_rows(false, &display_map);
1905 if next_rows.start <= rows.end {
1906 rows.end = next_rows.end;
1907 selections.next().unwrap();
1908 } else {
1909 break;
1910 }
1911 }
1912
1913 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1914 let edit_end;
1915 let cursor_buffer_row;
1916 if buffer.max_point().row >= rows.end {
1917 // If there's a line after the range, delete the \n from the end of the row range
1918 // and position the cursor on the next line.
1919 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1920 cursor_buffer_row = rows.end;
1921 } else {
1922 // If there isn't a line after the range, delete the \n from the line before the
1923 // start of the row range and position the cursor there.
1924 edit_start = edit_start.saturating_sub(1);
1925 edit_end = buffer.len();
1926 cursor_buffer_row = rows.start.saturating_sub(1);
1927 }
1928
1929 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1930 *cursor.column_mut() =
1931 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1932
1933 new_cursors.push((
1934 selection.id,
1935 buffer.anchor_after(cursor.to_point(&display_map)),
1936 ));
1937 edit_ranges.push(edit_start..edit_end);
1938 }
1939
1940 let buffer = self.buffer.update(cx, |buffer, cx| {
1941 buffer.edit(edit_ranges, "", cx);
1942 buffer.snapshot(cx)
1943 });
1944 let new_selections = new_cursors
1945 .into_iter()
1946 .map(|(id, cursor)| {
1947 let cursor = cursor.to_point(&buffer);
1948 Selection {
1949 id,
1950 start: cursor,
1951 end: cursor,
1952 reversed: false,
1953 goal: SelectionGoal::None,
1954 }
1955 })
1956 .collect();
1957 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1958 self.end_transaction(cx);
1959 }
1960
1961 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1962 self.start_transaction(cx);
1963
1964 let selections = self.local_selections::<Point>(cx);
1965 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1966 let buffer = &display_map.buffer_snapshot;
1967
1968 let mut edits = Vec::new();
1969 let mut selections_iter = selections.iter().peekable();
1970 while let Some(selection) = selections_iter.next() {
1971 // Avoid duplicating the same lines twice.
1972 let mut rows = selection.spanned_rows(false, &display_map);
1973
1974 while let Some(next_selection) = selections_iter.peek() {
1975 let next_rows = next_selection.spanned_rows(false, &display_map);
1976 if next_rows.start <= rows.end - 1 {
1977 rows.end = next_rows.end;
1978 selections_iter.next().unwrap();
1979 } else {
1980 break;
1981 }
1982 }
1983
1984 // Copy the text from the selected row region and splice it at the start of the region.
1985 let start = Point::new(rows.start, 0);
1986 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1987 let text = buffer
1988 .text_for_range(start..end)
1989 .chain(Some("\n"))
1990 .collect::<String>();
1991 edits.push((start, text, rows.len() as u32));
1992 }
1993
1994 self.buffer.update(cx, |buffer, cx| {
1995 for (point, text, _) in edits.into_iter().rev() {
1996 buffer.edit(Some(point..point), text, cx);
1997 }
1998 });
1999
2000 self.request_autoscroll(Autoscroll::Fit, cx);
2001 self.end_transaction(cx);
2002 }
2003
2004 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2005 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2006 let buffer = self.buffer.read(cx).snapshot(cx);
2007
2008 let mut edits = Vec::new();
2009 let mut unfold_ranges = Vec::new();
2010 let mut refold_ranges = Vec::new();
2011
2012 let selections = self.local_selections::<Point>(cx);
2013 let mut selections = selections.iter().peekable();
2014 let mut contiguous_row_selections = Vec::new();
2015 let mut new_selections = Vec::new();
2016
2017 while let Some(selection) = selections.next() {
2018 // Find all the selections that span a contiguous row range
2019 contiguous_row_selections.push(selection.clone());
2020 let start_row = selection.start.row;
2021 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2022 display_map.next_line_boundary(selection.end).0.row + 1
2023 } else {
2024 selection.end.row
2025 };
2026
2027 while let Some(next_selection) = selections.peek() {
2028 if next_selection.start.row <= end_row {
2029 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2030 display_map.next_line_boundary(next_selection.end).0.row + 1
2031 } else {
2032 next_selection.end.row
2033 };
2034 contiguous_row_selections.push(selections.next().unwrap().clone());
2035 } else {
2036 break;
2037 }
2038 }
2039
2040 // Move the text spanned by the row range to be before the line preceding the row range
2041 if start_row > 0 {
2042 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2043 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2044 let insertion_point = display_map
2045 .prev_line_boundary(Point::new(start_row - 1, 0))
2046 .0;
2047
2048 // Don't move lines across excerpts
2049 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2050 let text = buffer
2051 .text_for_range(range_to_move.clone())
2052 .flat_map(|s| s.chars())
2053 .skip(1)
2054 .chain(['\n'])
2055 .collect::<String>();
2056
2057 edits.push((
2058 buffer.anchor_after(range_to_move.start)
2059 ..buffer.anchor_before(range_to_move.end),
2060 String::new(),
2061 ));
2062 let insertion_anchor = buffer.anchor_after(insertion_point);
2063 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2064
2065 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2066
2067 // Move selections up
2068 new_selections.extend(contiguous_row_selections.drain(..).map(
2069 |mut selection| {
2070 selection.start.row -= row_delta;
2071 selection.end.row -= row_delta;
2072 selection
2073 },
2074 ));
2075
2076 // Move folds up
2077 unfold_ranges.push(range_to_move.clone());
2078 for fold in display_map.folds_in_range(
2079 buffer.anchor_before(range_to_move.start)
2080 ..buffer.anchor_after(range_to_move.end),
2081 ) {
2082 let mut start = fold.start.to_point(&buffer);
2083 let mut end = fold.end.to_point(&buffer);
2084 start.row -= row_delta;
2085 end.row -= row_delta;
2086 refold_ranges.push(start..end);
2087 }
2088 }
2089 }
2090
2091 // If we didn't move line(s), preserve the existing selections
2092 new_selections.extend(contiguous_row_selections.drain(..));
2093 }
2094
2095 self.start_transaction(cx);
2096 self.unfold_ranges(unfold_ranges, cx);
2097 self.buffer.update(cx, |buffer, cx| {
2098 for (range, text) in edits {
2099 buffer.edit([range], text, cx);
2100 }
2101 });
2102 self.fold_ranges(refold_ranges, cx);
2103 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2104 self.end_transaction(cx);
2105 }
2106
2107 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2108 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2109 let buffer = self.buffer.read(cx).snapshot(cx);
2110
2111 let mut edits = Vec::new();
2112 let mut unfold_ranges = Vec::new();
2113 let mut refold_ranges = Vec::new();
2114
2115 let selections = self.local_selections::<Point>(cx);
2116 let mut selections = selections.iter().peekable();
2117 let mut contiguous_row_selections = Vec::new();
2118 let mut new_selections = Vec::new();
2119
2120 while let Some(selection) = selections.next() {
2121 // Find all the selections that span a contiguous row range
2122 contiguous_row_selections.push(selection.clone());
2123 let start_row = selection.start.row;
2124 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2125 display_map.next_line_boundary(selection.end).0.row + 1
2126 } else {
2127 selection.end.row
2128 };
2129
2130 while let Some(next_selection) = selections.peek() {
2131 if next_selection.start.row <= end_row {
2132 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2133 display_map.next_line_boundary(next_selection.end).0.row + 1
2134 } else {
2135 next_selection.end.row
2136 };
2137 contiguous_row_selections.push(selections.next().unwrap().clone());
2138 } else {
2139 break;
2140 }
2141 }
2142
2143 // Move the text spanned by the row range to be after the last line of the row range
2144 if end_row <= buffer.max_point().row {
2145 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2146 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2147
2148 // Don't move lines across excerpt boundaries
2149 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2150 let mut text = String::from("\n");
2151 text.extend(buffer.text_for_range(range_to_move.clone()));
2152 text.pop(); // Drop trailing newline
2153 edits.push((
2154 buffer.anchor_after(range_to_move.start)
2155 ..buffer.anchor_before(range_to_move.end),
2156 String::new(),
2157 ));
2158 let insertion_anchor = buffer.anchor_after(insertion_point);
2159 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2160
2161 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2162
2163 // Move selections down
2164 new_selections.extend(contiguous_row_selections.drain(..).map(
2165 |mut selection| {
2166 selection.start.row += row_delta;
2167 selection.end.row += row_delta;
2168 selection
2169 },
2170 ));
2171
2172 // Move folds down
2173 unfold_ranges.push(range_to_move.clone());
2174 for fold in display_map.folds_in_range(
2175 buffer.anchor_before(range_to_move.start)
2176 ..buffer.anchor_after(range_to_move.end),
2177 ) {
2178 let mut start = fold.start.to_point(&buffer);
2179 let mut end = fold.end.to_point(&buffer);
2180 start.row += row_delta;
2181 end.row += row_delta;
2182 refold_ranges.push(start..end);
2183 }
2184 }
2185 }
2186
2187 // If we didn't move line(s), preserve the existing selections
2188 new_selections.extend(contiguous_row_selections.drain(..));
2189 }
2190
2191 self.start_transaction(cx);
2192 self.unfold_ranges(unfold_ranges, cx);
2193 self.buffer.update(cx, |buffer, cx| {
2194 for (range, text) in edits {
2195 buffer.edit([range], text, cx);
2196 }
2197 });
2198 self.fold_ranges(refold_ranges, cx);
2199 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2200 self.end_transaction(cx);
2201 }
2202
2203 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2204 self.start_transaction(cx);
2205 let mut text = String::new();
2206 let mut selections = self.local_selections::<Point>(cx);
2207 let mut clipboard_selections = Vec::with_capacity(selections.len());
2208 {
2209 let buffer = self.buffer.read(cx).read(cx);
2210 let max_point = buffer.max_point();
2211 for selection in &mut selections {
2212 let is_entire_line = selection.is_empty();
2213 if is_entire_line {
2214 selection.start = Point::new(selection.start.row, 0);
2215 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2216 }
2217 let mut len = 0;
2218 for chunk in buffer.text_for_range(selection.start..selection.end) {
2219 text.push_str(chunk);
2220 len += chunk.len();
2221 }
2222 clipboard_selections.push(ClipboardSelection {
2223 len,
2224 is_entire_line,
2225 });
2226 }
2227 }
2228 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2229 self.insert("", cx);
2230 self.end_transaction(cx);
2231
2232 cx.as_mut()
2233 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2234 }
2235
2236 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2237 let selections = self.local_selections::<Point>(cx);
2238 let mut text = String::new();
2239 let mut clipboard_selections = Vec::with_capacity(selections.len());
2240 {
2241 let buffer = self.buffer.read(cx).read(cx);
2242 let max_point = buffer.max_point();
2243 for selection in selections.iter() {
2244 let mut start = selection.start;
2245 let mut end = selection.end;
2246 let is_entire_line = selection.is_empty();
2247 if is_entire_line {
2248 start = Point::new(start.row, 0);
2249 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2250 }
2251 let mut len = 0;
2252 for chunk in buffer.text_for_range(start..end) {
2253 text.push_str(chunk);
2254 len += chunk.len();
2255 }
2256 clipboard_selections.push(ClipboardSelection {
2257 len,
2258 is_entire_line,
2259 });
2260 }
2261 }
2262
2263 cx.as_mut()
2264 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2265 }
2266
2267 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2268 if let Some(item) = cx.as_mut().read_from_clipboard() {
2269 let clipboard_text = item.text();
2270 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2271 let mut selections = self.local_selections::<usize>(cx);
2272 let all_selections_were_entire_line =
2273 clipboard_selections.iter().all(|s| s.is_entire_line);
2274 if clipboard_selections.len() != selections.len() {
2275 clipboard_selections.clear();
2276 }
2277
2278 let mut delta = 0_isize;
2279 let mut start_offset = 0;
2280 for (i, selection) in selections.iter_mut().enumerate() {
2281 let to_insert;
2282 let entire_line;
2283 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2284 let end_offset = start_offset + clipboard_selection.len;
2285 to_insert = &clipboard_text[start_offset..end_offset];
2286 entire_line = clipboard_selection.is_entire_line;
2287 start_offset = end_offset
2288 } else {
2289 to_insert = clipboard_text.as_str();
2290 entire_line = all_selections_were_entire_line;
2291 }
2292
2293 selection.start = (selection.start as isize + delta) as usize;
2294 selection.end = (selection.end as isize + delta) as usize;
2295
2296 self.buffer.update(cx, |buffer, cx| {
2297 // If the corresponding selection was empty when this slice of the
2298 // clipboard text was written, then the entire line containing the
2299 // selection was copied. If this selection is also currently empty,
2300 // then paste the line before the current line of the buffer.
2301 let range = if selection.is_empty() && entire_line {
2302 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2303 let line_start = selection.start - column;
2304 line_start..line_start
2305 } else {
2306 selection.start..selection.end
2307 };
2308
2309 delta += to_insert.len() as isize - range.len() as isize;
2310 buffer.edit([range], to_insert, cx);
2311 selection.start += to_insert.len();
2312 selection.end = selection.start;
2313 });
2314 }
2315 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2316 } else {
2317 self.insert(clipboard_text, cx);
2318 }
2319 }
2320 }
2321
2322 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2323 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2324 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2325 self.set_selections(selections, cx);
2326 }
2327 self.request_autoscroll(Autoscroll::Fit, cx);
2328 }
2329 }
2330
2331 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2332 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2333 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2334 self.set_selections(selections, cx);
2335 }
2336 self.request_autoscroll(Autoscroll::Fit, cx);
2337 }
2338 }
2339
2340 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2341 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2342 let mut selections = self.local_selections::<Point>(cx);
2343 for selection in &mut selections {
2344 let start = selection.start.to_display_point(&display_map);
2345 let end = selection.end.to_display_point(&display_map);
2346
2347 if start != end {
2348 selection.end = selection.start.clone();
2349 } else {
2350 let cursor = movement::left(&display_map, start)
2351 .unwrap()
2352 .to_point(&display_map);
2353 selection.start = cursor.clone();
2354 selection.end = cursor;
2355 }
2356 selection.reversed = false;
2357 selection.goal = SelectionGoal::None;
2358 }
2359 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2360 }
2361
2362 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2363 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2364 let mut selections = self.local_selections::<Point>(cx);
2365 for selection in &mut selections {
2366 let head = selection.head().to_display_point(&display_map);
2367 let cursor = movement::left(&display_map, head)
2368 .unwrap()
2369 .to_point(&display_map);
2370 selection.set_head(cursor);
2371 selection.goal = SelectionGoal::None;
2372 }
2373 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2374 }
2375
2376 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2377 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2378 let mut selections = self.local_selections::<Point>(cx);
2379 for selection in &mut selections {
2380 let start = selection.start.to_display_point(&display_map);
2381 let end = selection.end.to_display_point(&display_map);
2382
2383 if start != end {
2384 selection.start = selection.end.clone();
2385 } else {
2386 let cursor = movement::right(&display_map, end)
2387 .unwrap()
2388 .to_point(&display_map);
2389 selection.start = cursor;
2390 selection.end = cursor;
2391 }
2392 selection.reversed = false;
2393 selection.goal = SelectionGoal::None;
2394 }
2395 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2396 }
2397
2398 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2399 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2400 let mut selections = self.local_selections::<Point>(cx);
2401 for selection in &mut selections {
2402 let head = selection.head().to_display_point(&display_map);
2403 let cursor = movement::right(&display_map, head)
2404 .unwrap()
2405 .to_point(&display_map);
2406 selection.set_head(cursor);
2407 selection.goal = SelectionGoal::None;
2408 }
2409 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2410 }
2411
2412 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2413 if let Some(completion_state) = &mut self.completion_state {
2414 if completion_state.selected_item > 0 {
2415 completion_state.selected_item -= 1;
2416 completion_state
2417 .list
2418 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2419 }
2420 cx.notify();
2421 return;
2422 }
2423
2424 if matches!(self.mode, EditorMode::SingleLine) {
2425 cx.propagate_action();
2426 return;
2427 }
2428
2429 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2430 let mut selections = self.local_selections::<Point>(cx);
2431 for selection in &mut selections {
2432 let start = selection.start.to_display_point(&display_map);
2433 let end = selection.end.to_display_point(&display_map);
2434 if start != end {
2435 selection.goal = SelectionGoal::None;
2436 }
2437
2438 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2439 let cursor = start.to_point(&display_map);
2440 selection.start = cursor;
2441 selection.end = cursor;
2442 selection.goal = goal;
2443 selection.reversed = false;
2444 }
2445 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2446 }
2447
2448 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2449 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2450 let mut selections = self.local_selections::<Point>(cx);
2451 for selection in &mut selections {
2452 let head = selection.head().to_display_point(&display_map);
2453 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2454 let cursor = head.to_point(&display_map);
2455 selection.set_head(cursor);
2456 selection.goal = goal;
2457 }
2458 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2459 }
2460
2461 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2462 if let Some(completion_state) = &mut self.completion_state {
2463 if completion_state.selected_item + 1 < completion_state.completions.len() {
2464 completion_state.selected_item += 1;
2465 completion_state
2466 .list
2467 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2468 }
2469 cx.notify();
2470 return;
2471 }
2472
2473 if matches!(self.mode, EditorMode::SingleLine) {
2474 cx.propagate_action();
2475 return;
2476 }
2477
2478 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2479 let mut selections = self.local_selections::<Point>(cx);
2480 for selection in &mut selections {
2481 let start = selection.start.to_display_point(&display_map);
2482 let end = selection.end.to_display_point(&display_map);
2483 if start != end {
2484 selection.goal = SelectionGoal::None;
2485 }
2486
2487 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2488 let cursor = start.to_point(&display_map);
2489 selection.start = cursor;
2490 selection.end = cursor;
2491 selection.goal = goal;
2492 selection.reversed = false;
2493 }
2494 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2495 }
2496
2497 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2498 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2499 let mut selections = self.local_selections::<Point>(cx);
2500 for selection in &mut selections {
2501 let head = selection.head().to_display_point(&display_map);
2502 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2503 let cursor = head.to_point(&display_map);
2504 selection.set_head(cursor);
2505 selection.goal = goal;
2506 }
2507 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2508 }
2509
2510 pub fn move_to_previous_word_boundary(
2511 &mut self,
2512 _: &MoveToPreviousWordBoundary,
2513 cx: &mut ViewContext<Self>,
2514 ) {
2515 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2516 let mut selections = self.local_selections::<Point>(cx);
2517 for selection in &mut selections {
2518 let head = selection.head().to_display_point(&display_map);
2519 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2520 selection.start = cursor.clone();
2521 selection.end = cursor;
2522 selection.reversed = false;
2523 selection.goal = SelectionGoal::None;
2524 }
2525 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2526 }
2527
2528 pub fn select_to_previous_word_boundary(
2529 &mut self,
2530 _: &SelectToPreviousWordBoundary,
2531 cx: &mut ViewContext<Self>,
2532 ) {
2533 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2534 let mut selections = self.local_selections::<Point>(cx);
2535 for selection in &mut selections {
2536 let head = selection.head().to_display_point(&display_map);
2537 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2538 selection.set_head(cursor);
2539 selection.goal = SelectionGoal::None;
2540 }
2541 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2542 }
2543
2544 pub fn delete_to_previous_word_boundary(
2545 &mut self,
2546 _: &DeleteToPreviousWordBoundary,
2547 cx: &mut ViewContext<Self>,
2548 ) {
2549 self.start_transaction(cx);
2550 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2551 let mut selections = self.local_selections::<Point>(cx);
2552 for selection in &mut selections {
2553 if selection.is_empty() {
2554 let head = selection.head().to_display_point(&display_map);
2555 let cursor =
2556 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2557 selection.set_head(cursor);
2558 selection.goal = SelectionGoal::None;
2559 }
2560 }
2561 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2562 self.insert("", cx);
2563 self.end_transaction(cx);
2564 }
2565
2566 pub fn move_to_next_word_boundary(
2567 &mut self,
2568 _: &MoveToNextWordBoundary,
2569 cx: &mut ViewContext<Self>,
2570 ) {
2571 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2572 let mut selections = self.local_selections::<Point>(cx);
2573 for selection in &mut selections {
2574 let head = selection.head().to_display_point(&display_map);
2575 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2576 selection.start = cursor;
2577 selection.end = cursor;
2578 selection.reversed = false;
2579 selection.goal = SelectionGoal::None;
2580 }
2581 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2582 }
2583
2584 pub fn select_to_next_word_boundary(
2585 &mut self,
2586 _: &SelectToNextWordBoundary,
2587 cx: &mut ViewContext<Self>,
2588 ) {
2589 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2590 let mut selections = self.local_selections::<Point>(cx);
2591 for selection in &mut selections {
2592 let head = selection.head().to_display_point(&display_map);
2593 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2594 selection.set_head(cursor);
2595 selection.goal = SelectionGoal::None;
2596 }
2597 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2598 }
2599
2600 pub fn delete_to_next_word_boundary(
2601 &mut self,
2602 _: &DeleteToNextWordBoundary,
2603 cx: &mut ViewContext<Self>,
2604 ) {
2605 self.start_transaction(cx);
2606 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2607 let mut selections = self.local_selections::<Point>(cx);
2608 for selection in &mut selections {
2609 if selection.is_empty() {
2610 let head = selection.head().to_display_point(&display_map);
2611 let cursor =
2612 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2613 selection.set_head(cursor);
2614 selection.goal = SelectionGoal::None;
2615 }
2616 }
2617 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2618 self.insert("", cx);
2619 self.end_transaction(cx);
2620 }
2621
2622 pub fn move_to_beginning_of_line(
2623 &mut self,
2624 _: &MoveToBeginningOfLine,
2625 cx: &mut ViewContext<Self>,
2626 ) {
2627 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2628 let mut selections = self.local_selections::<Point>(cx);
2629 for selection in &mut selections {
2630 let head = selection.head().to_display_point(&display_map);
2631 let new_head = movement::line_beginning(&display_map, head, true);
2632 let cursor = new_head.to_point(&display_map);
2633 selection.start = cursor;
2634 selection.end = cursor;
2635 selection.reversed = false;
2636 selection.goal = SelectionGoal::None;
2637 }
2638 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2639 }
2640
2641 pub fn select_to_beginning_of_line(
2642 &mut self,
2643 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2644 cx: &mut ViewContext<Self>,
2645 ) {
2646 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2647 let mut selections = self.local_selections::<Point>(cx);
2648 for selection in &mut selections {
2649 let head = selection.head().to_display_point(&display_map);
2650 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2651 selection.set_head(new_head.to_point(&display_map));
2652 selection.goal = SelectionGoal::None;
2653 }
2654 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2655 }
2656
2657 pub fn delete_to_beginning_of_line(
2658 &mut self,
2659 _: &DeleteToBeginningOfLine,
2660 cx: &mut ViewContext<Self>,
2661 ) {
2662 self.start_transaction(cx);
2663 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2664 self.backspace(&Backspace, cx);
2665 self.end_transaction(cx);
2666 }
2667
2668 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2669 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2670 let mut selections = self.local_selections::<Point>(cx);
2671 {
2672 for selection in &mut selections {
2673 let head = selection.head().to_display_point(&display_map);
2674 let new_head = movement::line_end(&display_map, head);
2675 let anchor = new_head.to_point(&display_map);
2676 selection.start = anchor.clone();
2677 selection.end = anchor;
2678 selection.reversed = false;
2679 selection.goal = SelectionGoal::None;
2680 }
2681 }
2682 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2683 }
2684
2685 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2686 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2687 let mut selections = self.local_selections::<Point>(cx);
2688 for selection in &mut selections {
2689 let head = selection.head().to_display_point(&display_map);
2690 let new_head = movement::line_end(&display_map, head);
2691 selection.set_head(new_head.to_point(&display_map));
2692 selection.goal = SelectionGoal::None;
2693 }
2694 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2695 }
2696
2697 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2698 self.start_transaction(cx);
2699 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2700 self.delete(&Delete, cx);
2701 self.end_transaction(cx);
2702 }
2703
2704 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2705 self.start_transaction(cx);
2706 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2707 self.cut(&Cut, cx);
2708 self.end_transaction(cx);
2709 }
2710
2711 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2712 if matches!(self.mode, EditorMode::SingleLine) {
2713 cx.propagate_action();
2714 return;
2715 }
2716
2717 let selection = Selection {
2718 id: post_inc(&mut self.next_selection_id),
2719 start: 0,
2720 end: 0,
2721 reversed: false,
2722 goal: SelectionGoal::None,
2723 };
2724 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2725 }
2726
2727 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2728 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2729 selection.set_head(Point::zero());
2730 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2731 }
2732
2733 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2734 if matches!(self.mode, EditorMode::SingleLine) {
2735 cx.propagate_action();
2736 return;
2737 }
2738
2739 let cursor = self.buffer.read(cx).read(cx).len();
2740 let selection = Selection {
2741 id: post_inc(&mut self.next_selection_id),
2742 start: cursor,
2743 end: cursor,
2744 reversed: false,
2745 goal: SelectionGoal::None,
2746 };
2747 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2748 }
2749
2750 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2751 self.nav_history = nav_history;
2752 }
2753
2754 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2755 self.nav_history.as_ref()
2756 }
2757
2758 fn push_to_nav_history(
2759 &self,
2760 position: Anchor,
2761 new_position: Option<Point>,
2762 cx: &mut ViewContext<Self>,
2763 ) {
2764 if let Some(nav_history) = &self.nav_history {
2765 let buffer = self.buffer.read(cx).read(cx);
2766 let offset = position.to_offset(&buffer);
2767 let point = position.to_point(&buffer);
2768 drop(buffer);
2769
2770 if let Some(new_position) = new_position {
2771 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2772 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2773 return;
2774 }
2775 }
2776
2777 nav_history.push(Some(NavigationData {
2778 anchor: position,
2779 offset,
2780 }));
2781 }
2782 }
2783
2784 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2785 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2786 selection.set_head(self.buffer.read(cx).read(cx).len());
2787 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2788 }
2789
2790 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2791 let selection = Selection {
2792 id: post_inc(&mut self.next_selection_id),
2793 start: 0,
2794 end: self.buffer.read(cx).read(cx).len(),
2795 reversed: false,
2796 goal: SelectionGoal::None,
2797 };
2798 self.update_selections(vec![selection], None, cx);
2799 }
2800
2801 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2802 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2803 let mut selections = self.local_selections::<Point>(cx);
2804 let max_point = display_map.buffer_snapshot.max_point();
2805 for selection in &mut selections {
2806 let rows = selection.spanned_rows(true, &display_map);
2807 selection.start = Point::new(rows.start, 0);
2808 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2809 selection.reversed = false;
2810 }
2811 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2812 }
2813
2814 pub fn split_selection_into_lines(
2815 &mut self,
2816 _: &SplitSelectionIntoLines,
2817 cx: &mut ViewContext<Self>,
2818 ) {
2819 let mut to_unfold = Vec::new();
2820 let mut new_selections = Vec::new();
2821 {
2822 let selections = self.local_selections::<Point>(cx);
2823 let buffer = self.buffer.read(cx).read(cx);
2824 for selection in selections {
2825 for row in selection.start.row..selection.end.row {
2826 let cursor = Point::new(row, buffer.line_len(row));
2827 new_selections.push(Selection {
2828 id: post_inc(&mut self.next_selection_id),
2829 start: cursor,
2830 end: cursor,
2831 reversed: false,
2832 goal: SelectionGoal::None,
2833 });
2834 }
2835 new_selections.push(Selection {
2836 id: selection.id,
2837 start: selection.end,
2838 end: selection.end,
2839 reversed: false,
2840 goal: SelectionGoal::None,
2841 });
2842 to_unfold.push(selection.start..selection.end);
2843 }
2844 }
2845 self.unfold_ranges(to_unfold, cx);
2846 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2847 }
2848
2849 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2850 self.add_selection(true, cx);
2851 }
2852
2853 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2854 self.add_selection(false, cx);
2855 }
2856
2857 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2858 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2859 let mut selections = self.local_selections::<Point>(cx);
2860 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2861 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2862 let range = oldest_selection.display_range(&display_map).sorted();
2863 let columns = cmp::min(range.start.column(), range.end.column())
2864 ..cmp::max(range.start.column(), range.end.column());
2865
2866 selections.clear();
2867 let mut stack = Vec::new();
2868 for row in range.start.row()..=range.end.row() {
2869 if let Some(selection) = self.build_columnar_selection(
2870 &display_map,
2871 row,
2872 &columns,
2873 oldest_selection.reversed,
2874 ) {
2875 stack.push(selection.id);
2876 selections.push(selection);
2877 }
2878 }
2879
2880 if above {
2881 stack.reverse();
2882 }
2883
2884 AddSelectionsState { above, stack }
2885 });
2886
2887 let last_added_selection = *state.stack.last().unwrap();
2888 let mut new_selections = Vec::new();
2889 if above == state.above {
2890 let end_row = if above {
2891 0
2892 } else {
2893 display_map.max_point().row()
2894 };
2895
2896 'outer: for selection in selections {
2897 if selection.id == last_added_selection {
2898 let range = selection.display_range(&display_map).sorted();
2899 debug_assert_eq!(range.start.row(), range.end.row());
2900 let mut row = range.start.row();
2901 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2902 {
2903 start..end
2904 } else {
2905 cmp::min(range.start.column(), range.end.column())
2906 ..cmp::max(range.start.column(), range.end.column())
2907 };
2908
2909 while row != end_row {
2910 if above {
2911 row -= 1;
2912 } else {
2913 row += 1;
2914 }
2915
2916 if let Some(new_selection) = self.build_columnar_selection(
2917 &display_map,
2918 row,
2919 &columns,
2920 selection.reversed,
2921 ) {
2922 state.stack.push(new_selection.id);
2923 if above {
2924 new_selections.push(new_selection);
2925 new_selections.push(selection);
2926 } else {
2927 new_selections.push(selection);
2928 new_selections.push(new_selection);
2929 }
2930
2931 continue 'outer;
2932 }
2933 }
2934 }
2935
2936 new_selections.push(selection);
2937 }
2938 } else {
2939 new_selections = selections;
2940 new_selections.retain(|s| s.id != last_added_selection);
2941 state.stack.pop();
2942 }
2943
2944 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2945 if state.stack.len() > 1 {
2946 self.add_selections_state = Some(state);
2947 }
2948 }
2949
2950 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2951 let replace_newest = action.0;
2952 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2953 let buffer = &display_map.buffer_snapshot;
2954 let mut selections = self.local_selections::<usize>(cx);
2955 if let Some(mut select_next_state) = self.select_next_state.take() {
2956 let query = &select_next_state.query;
2957 if !select_next_state.done {
2958 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2959 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2960 let mut next_selected_range = None;
2961
2962 let bytes_after_last_selection =
2963 buffer.bytes_in_range(last_selection.end..buffer.len());
2964 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2965 let query_matches = query
2966 .stream_find_iter(bytes_after_last_selection)
2967 .map(|result| (last_selection.end, result))
2968 .chain(
2969 query
2970 .stream_find_iter(bytes_before_first_selection)
2971 .map(|result| (0, result)),
2972 );
2973 for (start_offset, query_match) in query_matches {
2974 let query_match = query_match.unwrap(); // can only fail due to I/O
2975 let offset_range =
2976 start_offset + query_match.start()..start_offset + query_match.end();
2977 let display_range = offset_range.start.to_display_point(&display_map)
2978 ..offset_range.end.to_display_point(&display_map);
2979
2980 if !select_next_state.wordwise
2981 || (!movement::is_inside_word(&display_map, display_range.start)
2982 && !movement::is_inside_word(&display_map, display_range.end))
2983 {
2984 next_selected_range = Some(offset_range);
2985 break;
2986 }
2987 }
2988
2989 if let Some(next_selected_range) = next_selected_range {
2990 if replace_newest {
2991 if let Some(newest_id) =
2992 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2993 {
2994 selections.retain(|s| s.id != newest_id);
2995 }
2996 }
2997 selections.push(Selection {
2998 id: post_inc(&mut self.next_selection_id),
2999 start: next_selected_range.start,
3000 end: next_selected_range.end,
3001 reversed: false,
3002 goal: SelectionGoal::None,
3003 });
3004 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3005 } else {
3006 select_next_state.done = true;
3007 }
3008 }
3009
3010 self.select_next_state = Some(select_next_state);
3011 } else if selections.len() == 1 {
3012 let selection = selections.last_mut().unwrap();
3013 if selection.start == selection.end {
3014 let word_range = movement::surrounding_word(
3015 &display_map,
3016 selection.start.to_display_point(&display_map),
3017 );
3018 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3019 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3020 selection.goal = SelectionGoal::None;
3021 selection.reversed = false;
3022
3023 let query = buffer
3024 .text_for_range(selection.start..selection.end)
3025 .collect::<String>();
3026 let select_state = SelectNextState {
3027 query: AhoCorasick::new_auto_configured(&[query]),
3028 wordwise: true,
3029 done: false,
3030 };
3031 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3032 self.select_next_state = Some(select_state);
3033 } else {
3034 let query = buffer
3035 .text_for_range(selection.start..selection.end)
3036 .collect::<String>();
3037 self.select_next_state = Some(SelectNextState {
3038 query: AhoCorasick::new_auto_configured(&[query]),
3039 wordwise: false,
3040 done: false,
3041 });
3042 self.select_next(action, cx);
3043 }
3044 }
3045 }
3046
3047 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3048 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3049 // as that portion won't be used for detecting if a line is a comment.
3050 let full_comment_prefix =
3051 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3052 prefix.to_string()
3053 } else {
3054 return;
3055 };
3056 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3057 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3058
3059 self.start_transaction(cx);
3060 let mut selections = self.local_selections::<Point>(cx);
3061 let mut all_selection_lines_are_comments = true;
3062 let mut edit_ranges = Vec::new();
3063 let mut last_toggled_row = None;
3064 self.buffer.update(cx, |buffer, cx| {
3065 for selection in &mut selections {
3066 edit_ranges.clear();
3067 let snapshot = buffer.snapshot(cx);
3068
3069 let end_row =
3070 if selection.end.row > selection.start.row && selection.end.column == 0 {
3071 selection.end.row
3072 } else {
3073 selection.end.row + 1
3074 };
3075
3076 for row in selection.start.row..end_row {
3077 // If multiple selections contain a given row, avoid processing that
3078 // row more than once.
3079 if last_toggled_row == Some(row) {
3080 continue;
3081 } else {
3082 last_toggled_row = Some(row);
3083 }
3084
3085 if snapshot.is_line_blank(row) {
3086 continue;
3087 }
3088
3089 let start = Point::new(row, snapshot.indent_column_for_line(row));
3090 let mut line_bytes = snapshot
3091 .bytes_in_range(start..snapshot.max_point())
3092 .flatten()
3093 .copied();
3094
3095 // If this line currently begins with the line comment prefix, then record
3096 // the range containing the prefix.
3097 if all_selection_lines_are_comments
3098 && line_bytes
3099 .by_ref()
3100 .take(comment_prefix.len())
3101 .eq(comment_prefix.bytes())
3102 {
3103 // Include any whitespace that matches the comment prefix.
3104 let matching_whitespace_len = line_bytes
3105 .zip(comment_prefix_whitespace.bytes())
3106 .take_while(|(a, b)| a == b)
3107 .count() as u32;
3108 let end = Point::new(
3109 row,
3110 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3111 );
3112 edit_ranges.push(start..end);
3113 }
3114 // If this line does not begin with the line comment prefix, then record
3115 // the position where the prefix should be inserted.
3116 else {
3117 all_selection_lines_are_comments = false;
3118 edit_ranges.push(start..start);
3119 }
3120 }
3121
3122 if !edit_ranges.is_empty() {
3123 if all_selection_lines_are_comments {
3124 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3125 } else {
3126 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3127 let edit_ranges = edit_ranges.iter().map(|range| {
3128 let position = Point::new(range.start.row, min_column);
3129 position..position
3130 });
3131 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3132 }
3133 }
3134 }
3135 });
3136
3137 self.update_selections(
3138 self.local_selections::<usize>(cx),
3139 Some(Autoscroll::Fit),
3140 cx,
3141 );
3142 self.end_transaction(cx);
3143 }
3144
3145 pub fn select_larger_syntax_node(
3146 &mut self,
3147 _: &SelectLargerSyntaxNode,
3148 cx: &mut ViewContext<Self>,
3149 ) {
3150 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3152 let buffer = self.buffer.read(cx).snapshot(cx);
3153
3154 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3155 let mut selected_larger_node = false;
3156 let new_selections = old_selections
3157 .iter()
3158 .map(|selection| {
3159 let old_range = selection.start..selection.end;
3160 let mut new_range = old_range.clone();
3161 while let Some(containing_range) =
3162 buffer.range_for_syntax_ancestor(new_range.clone())
3163 {
3164 new_range = containing_range;
3165 if !display_map.intersects_fold(new_range.start)
3166 && !display_map.intersects_fold(new_range.end)
3167 {
3168 break;
3169 }
3170 }
3171
3172 selected_larger_node |= new_range != old_range;
3173 Selection {
3174 id: selection.id,
3175 start: new_range.start,
3176 end: new_range.end,
3177 goal: SelectionGoal::None,
3178 reversed: selection.reversed,
3179 }
3180 })
3181 .collect::<Vec<_>>();
3182
3183 if selected_larger_node {
3184 stack.push(old_selections);
3185 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3186 }
3187 self.select_larger_syntax_node_stack = stack;
3188 }
3189
3190 pub fn select_smaller_syntax_node(
3191 &mut self,
3192 _: &SelectSmallerSyntaxNode,
3193 cx: &mut ViewContext<Self>,
3194 ) {
3195 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3196 if let Some(selections) = stack.pop() {
3197 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3198 }
3199 self.select_larger_syntax_node_stack = stack;
3200 }
3201
3202 pub fn move_to_enclosing_bracket(
3203 &mut self,
3204 _: &MoveToEnclosingBracket,
3205 cx: &mut ViewContext<Self>,
3206 ) {
3207 let mut selections = self.local_selections::<usize>(cx);
3208 let buffer = self.buffer.read(cx).snapshot(cx);
3209 for selection in &mut selections {
3210 if let Some((open_range, close_range)) =
3211 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3212 {
3213 let close_range = close_range.to_inclusive();
3214 let destination = if close_range.contains(&selection.start)
3215 && close_range.contains(&selection.end)
3216 {
3217 open_range.end
3218 } else {
3219 *close_range.start()
3220 };
3221 selection.start = destination;
3222 selection.end = destination;
3223 }
3224 }
3225
3226 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3227 }
3228
3229 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3230 let buffer = self.buffer.read(cx).snapshot(cx);
3231 let selection = self.newest_selection::<usize>(&buffer);
3232 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3233 active_diagnostics
3234 .primary_range
3235 .to_offset(&buffer)
3236 .to_inclusive()
3237 });
3238 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3239 if active_primary_range.contains(&selection.head()) {
3240 *active_primary_range.end()
3241 } else {
3242 selection.head()
3243 }
3244 } else {
3245 selection.head()
3246 };
3247
3248 loop {
3249 let next_group = buffer
3250 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3251 .find_map(|entry| {
3252 if entry.diagnostic.is_primary
3253 && !entry.range.is_empty()
3254 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3255 {
3256 Some((entry.range, entry.diagnostic.group_id))
3257 } else {
3258 None
3259 }
3260 });
3261
3262 if let Some((primary_range, group_id)) = next_group {
3263 self.activate_diagnostics(group_id, cx);
3264 self.update_selections(
3265 vec![Selection {
3266 id: selection.id,
3267 start: primary_range.start,
3268 end: primary_range.start,
3269 reversed: false,
3270 goal: SelectionGoal::None,
3271 }],
3272 Some(Autoscroll::Center),
3273 cx,
3274 );
3275 break;
3276 } else if search_start == 0 {
3277 break;
3278 } else {
3279 // Cycle around to the start of the buffer.
3280 search_start = 0;
3281 }
3282 }
3283 }
3284
3285 pub fn go_to_definition(
3286 workspace: &mut Workspace,
3287 _: &GoToDefinition,
3288 cx: &mut ViewContext<Workspace>,
3289 ) {
3290 let active_item = workspace.active_item(cx);
3291 let editor_handle = if let Some(editor) = active_item
3292 .as_ref()
3293 .and_then(|item| item.act_as::<Self>(cx))
3294 {
3295 editor
3296 } else {
3297 return;
3298 };
3299
3300 let editor = editor_handle.read(cx);
3301 let buffer = editor.buffer.read(cx);
3302 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3303 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3304 let definitions = workspace
3305 .project()
3306 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3307 cx.spawn(|workspace, mut cx| async move {
3308 let definitions = definitions.await?;
3309 workspace.update(&mut cx, |workspace, cx| {
3310 for definition in definitions {
3311 let range = definition
3312 .target_range
3313 .to_offset(definition.target_buffer.read(cx));
3314 let target_editor_handle = workspace
3315 .open_item(BufferItemHandle(definition.target_buffer), cx)
3316 .downcast::<Self>()
3317 .unwrap();
3318
3319 target_editor_handle.update(cx, |target_editor, cx| {
3320 // When selecting a definition in a different buffer, disable the nav history
3321 // to avoid creating a history entry at the previous cursor location.
3322 let disabled_history = if editor_handle == target_editor_handle {
3323 None
3324 } else {
3325 target_editor.nav_history.take()
3326 };
3327 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3328 if disabled_history.is_some() {
3329 target_editor.nav_history = disabled_history;
3330 }
3331 });
3332 }
3333 });
3334
3335 Ok::<(), anyhow::Error>(())
3336 })
3337 .detach_and_log_err(cx);
3338 }
3339
3340 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3341 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3342 let buffer = self.buffer.read(cx).snapshot(cx);
3343 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3344 let is_valid = buffer
3345 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3346 .any(|entry| {
3347 entry.diagnostic.is_primary
3348 && !entry.range.is_empty()
3349 && entry.range.start == primary_range_start
3350 && entry.diagnostic.message == active_diagnostics.primary_message
3351 });
3352
3353 if is_valid != active_diagnostics.is_valid {
3354 active_diagnostics.is_valid = is_valid;
3355 let mut new_styles = HashMap::default();
3356 for (block_id, diagnostic) in &active_diagnostics.blocks {
3357 new_styles.insert(
3358 *block_id,
3359 diagnostic_block_renderer(
3360 diagnostic.clone(),
3361 is_valid,
3362 self.build_settings.clone(),
3363 ),
3364 );
3365 }
3366 self.display_map
3367 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3368 }
3369 }
3370 }
3371
3372 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3373 self.dismiss_diagnostics(cx);
3374 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3375 let buffer = self.buffer.read(cx).snapshot(cx);
3376
3377 let mut primary_range = None;
3378 let mut primary_message = None;
3379 let mut group_end = Point::zero();
3380 let diagnostic_group = buffer
3381 .diagnostic_group::<Point>(group_id)
3382 .map(|entry| {
3383 if entry.range.end > group_end {
3384 group_end = entry.range.end;
3385 }
3386 if entry.diagnostic.is_primary {
3387 primary_range = Some(entry.range.clone());
3388 primary_message = Some(entry.diagnostic.message.clone());
3389 }
3390 entry
3391 })
3392 .collect::<Vec<_>>();
3393 let primary_range = primary_range.unwrap();
3394 let primary_message = primary_message.unwrap();
3395 let primary_range =
3396 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3397
3398 let blocks = display_map
3399 .insert_blocks(
3400 diagnostic_group.iter().map(|entry| {
3401 let build_settings = self.build_settings.clone();
3402 let diagnostic = entry.diagnostic.clone();
3403 let message_height = diagnostic.message.lines().count() as u8;
3404
3405 BlockProperties {
3406 position: buffer.anchor_after(entry.range.start),
3407 height: message_height,
3408 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3409 disposition: BlockDisposition::Below,
3410 }
3411 }),
3412 cx,
3413 )
3414 .into_iter()
3415 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3416 .collect();
3417
3418 Some(ActiveDiagnosticGroup {
3419 primary_range,
3420 primary_message,
3421 blocks,
3422 is_valid: true,
3423 })
3424 });
3425 }
3426
3427 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3428 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3429 self.display_map.update(cx, |display_map, cx| {
3430 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3431 });
3432 cx.notify();
3433 }
3434 }
3435
3436 fn build_columnar_selection(
3437 &mut self,
3438 display_map: &DisplaySnapshot,
3439 row: u32,
3440 columns: &Range<u32>,
3441 reversed: bool,
3442 ) -> Option<Selection<Point>> {
3443 let is_empty = columns.start == columns.end;
3444 let line_len = display_map.line_len(row);
3445 if columns.start < line_len || (is_empty && columns.start == line_len) {
3446 let start = DisplayPoint::new(row, columns.start);
3447 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3448 Some(Selection {
3449 id: post_inc(&mut self.next_selection_id),
3450 start: start.to_point(display_map),
3451 end: end.to_point(display_map),
3452 reversed,
3453 goal: SelectionGoal::ColumnRange {
3454 start: columns.start,
3455 end: columns.end,
3456 },
3457 })
3458 } else {
3459 None
3460 }
3461 }
3462
3463 pub fn local_selections_in_range(
3464 &self,
3465 range: Range<Anchor>,
3466 display_map: &DisplaySnapshot,
3467 ) -> Vec<Selection<Point>> {
3468 let buffer = &display_map.buffer_snapshot;
3469
3470 let start_ix = match self
3471 .selections
3472 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3473 {
3474 Ok(ix) | Err(ix) => ix,
3475 };
3476 let end_ix = match self
3477 .selections
3478 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3479 {
3480 Ok(ix) => ix + 1,
3481 Err(ix) => ix,
3482 };
3483
3484 fn point_selection(
3485 selection: &Selection<Anchor>,
3486 buffer: &MultiBufferSnapshot,
3487 ) -> Selection<Point> {
3488 let start = selection.start.to_point(&buffer);
3489 let end = selection.end.to_point(&buffer);
3490 Selection {
3491 id: selection.id,
3492 start,
3493 end,
3494 reversed: selection.reversed,
3495 goal: selection.goal,
3496 }
3497 }
3498
3499 self.selections[start_ix..end_ix]
3500 .iter()
3501 .chain(
3502 self.pending_selection
3503 .as_ref()
3504 .map(|pending| &pending.selection),
3505 )
3506 .map(|s| point_selection(s, &buffer))
3507 .collect()
3508 }
3509
3510 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3511 where
3512 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3513 {
3514 let buffer = self.buffer.read(cx).snapshot(cx);
3515 let mut selections = self
3516 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3517 .peekable();
3518
3519 let mut pending_selection = self.pending_selection::<D>(&buffer);
3520
3521 iter::from_fn(move || {
3522 if let Some(pending) = pending_selection.as_mut() {
3523 while let Some(next_selection) = selections.peek() {
3524 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3525 let next_selection = selections.next().unwrap();
3526 if next_selection.start < pending.start {
3527 pending.start = next_selection.start;
3528 }
3529 if next_selection.end > pending.end {
3530 pending.end = next_selection.end;
3531 }
3532 } else if next_selection.end < pending.start {
3533 return selections.next();
3534 } else {
3535 break;
3536 }
3537 }
3538
3539 pending_selection.take()
3540 } else {
3541 selections.next()
3542 }
3543 })
3544 .collect()
3545 }
3546
3547 fn resolve_selections<'a, D, I>(
3548 &self,
3549 selections: I,
3550 snapshot: &MultiBufferSnapshot,
3551 ) -> impl 'a + Iterator<Item = Selection<D>>
3552 where
3553 D: TextDimension + Ord + Sub<D, Output = D>,
3554 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3555 {
3556 let (to_summarize, selections) = selections.into_iter().tee();
3557 let mut summaries = snapshot
3558 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3559 .into_iter();
3560 selections.map(move |s| Selection {
3561 id: s.id,
3562 start: summaries.next().unwrap(),
3563 end: summaries.next().unwrap(),
3564 reversed: s.reversed,
3565 goal: s.goal,
3566 })
3567 }
3568
3569 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3570 &self,
3571 snapshot: &MultiBufferSnapshot,
3572 ) -> Option<Selection<D>> {
3573 self.pending_selection
3574 .as_ref()
3575 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3576 }
3577
3578 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3579 &self,
3580 selection: &Selection<Anchor>,
3581 buffer: &MultiBufferSnapshot,
3582 ) -> Selection<D> {
3583 Selection {
3584 id: selection.id,
3585 start: selection.start.summary::<D>(&buffer),
3586 end: selection.end.summary::<D>(&buffer),
3587 reversed: selection.reversed,
3588 goal: selection.goal,
3589 }
3590 }
3591
3592 fn selection_count<'a>(&self) -> usize {
3593 let mut count = self.selections.len();
3594 if self.pending_selection.is_some() {
3595 count += 1;
3596 }
3597 count
3598 }
3599
3600 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3601 &self,
3602 snapshot: &MultiBufferSnapshot,
3603 ) -> Selection<D> {
3604 self.selections
3605 .iter()
3606 .min_by_key(|s| s.id)
3607 .map(|selection| self.resolve_selection(selection, snapshot))
3608 .or_else(|| self.pending_selection(snapshot))
3609 .unwrap()
3610 }
3611
3612 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3613 &self,
3614 snapshot: &MultiBufferSnapshot,
3615 ) -> Selection<D> {
3616 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3617 }
3618
3619 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3620 self.pending_selection
3621 .as_ref()
3622 .map(|s| &s.selection)
3623 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3624 }
3625
3626 pub fn update_selections<T>(
3627 &mut self,
3628 mut selections: Vec<Selection<T>>,
3629 autoscroll: Option<Autoscroll>,
3630 cx: &mut ViewContext<Self>,
3631 ) where
3632 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3633 {
3634 let buffer = self.buffer.read(cx).snapshot(cx);
3635 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3636 selections.sort_unstable_by_key(|s| s.start);
3637
3638 // Merge overlapping selections.
3639 let mut i = 1;
3640 while i < selections.len() {
3641 if selections[i - 1].end >= selections[i].start {
3642 let removed = selections.remove(i);
3643 if removed.start < selections[i - 1].start {
3644 selections[i - 1].start = removed.start;
3645 }
3646 if removed.end > selections[i - 1].end {
3647 selections[i - 1].end = removed.end;
3648 }
3649 } else {
3650 i += 1;
3651 }
3652 }
3653
3654 self.pending_selection = None;
3655 self.add_selections_state = None;
3656 self.select_next_state = None;
3657 self.select_larger_syntax_node_stack.clear();
3658 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3659 let all_selections_inside_autoclose_ranges =
3660 if selections.len() == autoclose_pair.ranges.len() {
3661 selections
3662 .iter()
3663 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3664 .all(|(selection, autoclose_range)| {
3665 let head = selection.head().to_point(&buffer);
3666 autoclose_range.start <= head && autoclose_range.end >= head
3667 })
3668 } else {
3669 false
3670 };
3671
3672 if all_selections_inside_autoclose_ranges {
3673 break;
3674 } else {
3675 self.autoclose_stack.pop();
3676 }
3677 }
3678
3679 let new_cursor_position = selections.iter().max_by_key(|s| s.id).map(|s| s.head());
3680 if let Some(old_cursor_position) = old_cursor_position {
3681 if let Some(new_cursor_position) = new_cursor_position {
3682 self.push_to_nav_history(
3683 old_cursor_position,
3684 Some(new_cursor_position.to_point(&buffer)),
3685 cx,
3686 );
3687 }
3688 }
3689
3690 if let Some(autoscroll) = autoscroll {
3691 self.request_autoscroll(autoscroll, cx);
3692 }
3693 self.pause_cursor_blinking(cx);
3694
3695 self.set_selections(
3696 Arc::from_iter(selections.into_iter().map(|selection| {
3697 let end_bias = if selection.end > selection.start {
3698 Bias::Left
3699 } else {
3700 Bias::Right
3701 };
3702 Selection {
3703 id: selection.id,
3704 start: buffer.anchor_after(selection.start),
3705 end: buffer.anchor_at(selection.end, end_bias),
3706 reversed: selection.reversed,
3707 goal: selection.goal,
3708 }
3709 })),
3710 cx,
3711 );
3712
3713 if let Some((completion_state, cursor_position)) =
3714 self.completion_state.as_mut().zip(new_cursor_position)
3715 {
3716 let cursor_position = cursor_position.to_offset(&buffer);
3717 let (word_range, kind) =
3718 buffer.surrounding_word(completion_state.initial_position.clone());
3719 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
3720 {
3721 let query = Self::completion_query(&buffer, cursor_position);
3722 smol::block_on(completion_state.filter(query.as_deref(), cx.background().clone()));
3723 self.show_completions(&ShowCompletions, cx);
3724 } else {
3725 self.hide_completions(cx);
3726 }
3727 }
3728 }
3729
3730 /// Compute new ranges for any selections that were located in excerpts that have
3731 /// since been removed.
3732 ///
3733 /// Returns a `HashMap` indicating which selections whose former head position
3734 /// was no longer present. The keys of the map are selection ids. The values are
3735 /// the id of the new excerpt where the head of the selection has been moved.
3736 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3737 let snapshot = self.buffer.read(cx).read(cx);
3738 let anchors_with_status = snapshot.refresh_anchors(
3739 self.selections
3740 .iter()
3741 .flat_map(|selection| [&selection.start, &selection.end]),
3742 );
3743 let offsets =
3744 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3745 let offsets = offsets.chunks(2);
3746 let statuses = anchors_with_status
3747 .chunks(2)
3748 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3749
3750 let mut selections_with_lost_position = HashMap::default();
3751 let new_selections = offsets
3752 .zip(statuses)
3753 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3754 let selection = &self.selections[selection_ix];
3755 let kept_head = if selection.reversed {
3756 kept_start
3757 } else {
3758 kept_end
3759 };
3760 if !kept_head {
3761 selections_with_lost_position
3762 .insert(selection.id, selection.head().excerpt_id.clone());
3763 }
3764
3765 Selection {
3766 id: selection.id,
3767 start: offsets[0],
3768 end: offsets[1],
3769 reversed: selection.reversed,
3770 goal: selection.goal,
3771 }
3772 })
3773 .collect();
3774 drop(snapshot);
3775 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3776 selections_with_lost_position
3777 }
3778
3779 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3780 self.selections = selections;
3781 if self.focused {
3782 self.buffer.update(cx, |buffer, cx| {
3783 buffer.set_active_selections(&self.selections, cx)
3784 });
3785 }
3786 cx.emit(Event::SelectionsChanged);
3787 }
3788
3789 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3790 self.autoscroll_request = Some(autoscroll);
3791 cx.notify();
3792 }
3793
3794 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3795 self.start_transaction_at(Instant::now(), cx);
3796 }
3797
3798 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3799 self.end_selection(cx);
3800 if let Some(tx_id) = self
3801 .buffer
3802 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3803 {
3804 self.selection_history
3805 .insert(tx_id, (self.selections.clone(), None));
3806 }
3807 }
3808
3809 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3810 self.end_transaction_at(Instant::now(), cx);
3811 }
3812
3813 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3814 if let Some(tx_id) = self
3815 .buffer
3816 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3817 {
3818 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3819 *end_selections = Some(self.selections.clone());
3820 } else {
3821 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3822 }
3823 }
3824 }
3825
3826 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3827 log::info!("Editor::page_up");
3828 }
3829
3830 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3831 log::info!("Editor::page_down");
3832 }
3833
3834 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3835 let mut fold_ranges = Vec::new();
3836
3837 let selections = self.local_selections::<Point>(cx);
3838 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3839 for selection in selections {
3840 let range = selection.display_range(&display_map).sorted();
3841 let buffer_start_row = range.start.to_point(&display_map).row;
3842
3843 for row in (0..=range.end.row()).rev() {
3844 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3845 let fold_range = self.foldable_range_for_line(&display_map, row);
3846 if fold_range.end.row >= buffer_start_row {
3847 fold_ranges.push(fold_range);
3848 if row <= range.start.row() {
3849 break;
3850 }
3851 }
3852 }
3853 }
3854 }
3855
3856 self.fold_ranges(fold_ranges, cx);
3857 }
3858
3859 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3860 let selections = self.local_selections::<Point>(cx);
3861 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3862 let buffer = &display_map.buffer_snapshot;
3863 let ranges = selections
3864 .iter()
3865 .map(|s| {
3866 let range = s.display_range(&display_map).sorted();
3867 let mut start = range.start.to_point(&display_map);
3868 let mut end = range.end.to_point(&display_map);
3869 start.column = 0;
3870 end.column = buffer.line_len(end.row);
3871 start..end
3872 })
3873 .collect::<Vec<_>>();
3874 self.unfold_ranges(ranges, cx);
3875 }
3876
3877 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3878 let max_point = display_map.max_point();
3879 if display_row >= max_point.row() {
3880 false
3881 } else {
3882 let (start_indent, is_blank) = display_map.line_indent(display_row);
3883 if is_blank {
3884 false
3885 } else {
3886 for display_row in display_row + 1..=max_point.row() {
3887 let (indent, is_blank) = display_map.line_indent(display_row);
3888 if !is_blank {
3889 return indent > start_indent;
3890 }
3891 }
3892 false
3893 }
3894 }
3895 }
3896
3897 fn foldable_range_for_line(
3898 &self,
3899 display_map: &DisplaySnapshot,
3900 start_row: u32,
3901 ) -> Range<Point> {
3902 let max_point = display_map.max_point();
3903
3904 let (start_indent, _) = display_map.line_indent(start_row);
3905 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3906 let mut end = None;
3907 for row in start_row + 1..=max_point.row() {
3908 let (indent, is_blank) = display_map.line_indent(row);
3909 if !is_blank && indent <= start_indent {
3910 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3911 break;
3912 }
3913 }
3914
3915 let end = end.unwrap_or(max_point);
3916 return start.to_point(display_map)..end.to_point(display_map);
3917 }
3918
3919 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3920 let selections = self.local_selections::<Point>(cx);
3921 let ranges = selections.into_iter().map(|s| s.start..s.end);
3922 self.fold_ranges(ranges, cx);
3923 }
3924
3925 fn fold_ranges<T: ToOffset>(
3926 &mut self,
3927 ranges: impl IntoIterator<Item = Range<T>>,
3928 cx: &mut ViewContext<Self>,
3929 ) {
3930 let mut ranges = ranges.into_iter().peekable();
3931 if ranges.peek().is_some() {
3932 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3933 self.request_autoscroll(Autoscroll::Fit, cx);
3934 cx.notify();
3935 }
3936 }
3937
3938 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3939 if !ranges.is_empty() {
3940 self.display_map
3941 .update(cx, |map, cx| map.unfold(ranges, cx));
3942 self.request_autoscroll(Autoscroll::Fit, cx);
3943 cx.notify();
3944 }
3945 }
3946
3947 pub fn insert_blocks(
3948 &mut self,
3949 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3950 cx: &mut ViewContext<Self>,
3951 ) -> Vec<BlockId> {
3952 let blocks = self
3953 .display_map
3954 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3955 self.request_autoscroll(Autoscroll::Fit, cx);
3956 blocks
3957 }
3958
3959 pub fn replace_blocks(
3960 &mut self,
3961 blocks: HashMap<BlockId, RenderBlock>,
3962 cx: &mut ViewContext<Self>,
3963 ) {
3964 self.display_map
3965 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3966 self.request_autoscroll(Autoscroll::Fit, cx);
3967 }
3968
3969 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3970 self.display_map.update(cx, |display_map, cx| {
3971 display_map.remove_blocks(block_ids, cx)
3972 });
3973 }
3974
3975 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3976 self.display_map
3977 .update(cx, |map, cx| map.snapshot(cx))
3978 .longest_row()
3979 }
3980
3981 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3982 self.display_map
3983 .update(cx, |map, cx| map.snapshot(cx))
3984 .max_point()
3985 }
3986
3987 pub fn text(&self, cx: &AppContext) -> String {
3988 self.buffer.read(cx).read(cx).text()
3989 }
3990
3991 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3992 self.display_map
3993 .update(cx, |map, cx| map.snapshot(cx))
3994 .text()
3995 }
3996
3997 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3998 self.display_map
3999 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4000 }
4001
4002 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4003 self.highlighted_rows = rows;
4004 }
4005
4006 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4007 self.highlighted_rows.clone()
4008 }
4009
4010 pub fn highlight_ranges<T: 'static>(
4011 &mut self,
4012 ranges: Vec<Range<Anchor>>,
4013 color: Color,
4014 cx: &mut ViewContext<Self>,
4015 ) {
4016 self.highlighted_ranges
4017 .insert(TypeId::of::<T>(), (color, ranges));
4018 cx.notify();
4019 }
4020
4021 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4022 self.highlighted_ranges.remove(&TypeId::of::<T>());
4023 cx.notify();
4024 }
4025
4026 #[cfg(feature = "test-support")]
4027 pub fn all_highlighted_ranges(
4028 &mut self,
4029 cx: &mut ViewContext<Self>,
4030 ) -> Vec<(Range<DisplayPoint>, Color)> {
4031 let snapshot = self.snapshot(cx);
4032 let buffer = &snapshot.buffer_snapshot;
4033 let start = buffer.anchor_before(0);
4034 let end = buffer.anchor_after(buffer.len());
4035 self.highlighted_ranges_in_range(start..end, &snapshot)
4036 }
4037
4038 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4039 self.highlighted_ranges
4040 .get(&TypeId::of::<T>())
4041 .map(|(color, ranges)| (*color, ranges.as_slice()))
4042 }
4043
4044 pub fn highlighted_ranges_in_range(
4045 &self,
4046 search_range: Range<Anchor>,
4047 display_snapshot: &DisplaySnapshot,
4048 ) -> Vec<(Range<DisplayPoint>, Color)> {
4049 let mut results = Vec::new();
4050 let buffer = &display_snapshot.buffer_snapshot;
4051 for (color, ranges) in self.highlighted_ranges.values() {
4052 let start_ix = match ranges.binary_search_by(|probe| {
4053 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4054 if cmp.is_gt() {
4055 Ordering::Greater
4056 } else {
4057 Ordering::Less
4058 }
4059 }) {
4060 Ok(i) | Err(i) => i,
4061 };
4062 for range in &ranges[start_ix..] {
4063 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4064 break;
4065 }
4066 let start = range
4067 .start
4068 .to_point(buffer)
4069 .to_display_point(display_snapshot);
4070 let end = range
4071 .end
4072 .to_point(buffer)
4073 .to_display_point(display_snapshot);
4074 results.push((start..end, *color))
4075 }
4076 }
4077 results
4078 }
4079
4080 fn next_blink_epoch(&mut self) -> usize {
4081 self.blink_epoch += 1;
4082 self.blink_epoch
4083 }
4084
4085 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4086 if !self.focused {
4087 return;
4088 }
4089
4090 self.show_local_cursors = true;
4091 cx.notify();
4092
4093 let epoch = self.next_blink_epoch();
4094 cx.spawn(|this, mut cx| {
4095 let this = this.downgrade();
4096 async move {
4097 Timer::after(CURSOR_BLINK_INTERVAL).await;
4098 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4099 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4100 }
4101 }
4102 })
4103 .detach();
4104 }
4105
4106 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4107 if epoch == self.blink_epoch {
4108 self.blinking_paused = false;
4109 self.blink_cursors(epoch, cx);
4110 }
4111 }
4112
4113 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4114 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4115 self.show_local_cursors = !self.show_local_cursors;
4116 cx.notify();
4117
4118 let epoch = self.next_blink_epoch();
4119 cx.spawn(|this, mut cx| {
4120 let this = this.downgrade();
4121 async move {
4122 Timer::after(CURSOR_BLINK_INTERVAL).await;
4123 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4124 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4125 }
4126 }
4127 })
4128 .detach();
4129 }
4130 }
4131
4132 pub fn show_local_cursors(&self) -> bool {
4133 self.show_local_cursors
4134 }
4135
4136 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4137 self.refresh_active_diagnostics(cx);
4138 cx.notify();
4139 }
4140
4141 fn on_buffer_event(
4142 &mut self,
4143 _: ModelHandle<MultiBuffer>,
4144 event: &language::Event,
4145 cx: &mut ViewContext<Self>,
4146 ) {
4147 match event {
4148 language::Event::Edited => cx.emit(Event::Edited),
4149 language::Event::Dirtied => cx.emit(Event::Dirtied),
4150 language::Event::Saved => cx.emit(Event::Saved),
4151 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4152 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4153 language::Event::Closed => cx.emit(Event::Closed),
4154 _ => {}
4155 }
4156 }
4157
4158 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4159 cx.notify();
4160 }
4161}
4162
4163impl EditorSnapshot {
4164 pub fn is_focused(&self) -> bool {
4165 self.is_focused
4166 }
4167
4168 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4169 self.placeholder_text.as_ref()
4170 }
4171
4172 pub fn scroll_position(&self) -> Vector2F {
4173 compute_scroll_position(
4174 &self.display_snapshot,
4175 self.scroll_position,
4176 &self.scroll_top_anchor,
4177 )
4178 }
4179}
4180
4181impl Deref for EditorSnapshot {
4182 type Target = DisplaySnapshot;
4183
4184 fn deref(&self) -> &Self::Target {
4185 &self.display_snapshot
4186 }
4187}
4188
4189impl EditorSettings {
4190 #[cfg(any(test, feature = "test-support"))]
4191 pub fn test(cx: &AppContext) -> Self {
4192 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4193
4194 Self {
4195 tab_size: 4,
4196 soft_wrap: SoftWrap::None,
4197 style: {
4198 let font_cache: &gpui::FontCache = cx.font_cache();
4199 let font_family_name = Arc::from("Monaco");
4200 let font_properties = Default::default();
4201 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4202 let font_id = font_cache
4203 .select_font(font_family_id, &font_properties)
4204 .unwrap();
4205 let text = gpui::fonts::TextStyle {
4206 font_family_name,
4207 font_family_id,
4208 font_id,
4209 font_size: 14.,
4210 color: gpui::color::Color::from_u32(0xff0000ff),
4211 font_properties,
4212 underline: None,
4213 };
4214 let default_diagnostic_style = DiagnosticStyle {
4215 message: text.clone().into(),
4216 header: Default::default(),
4217 text_scale_factor: 1.,
4218 };
4219 EditorStyle {
4220 text: text.clone(),
4221 placeholder_text: None,
4222 background: Default::default(),
4223 gutter_background: Default::default(),
4224 gutter_padding_factor: 2.,
4225 active_line_background: Default::default(),
4226 highlighted_line_background: Default::default(),
4227 line_number: Default::default(),
4228 line_number_active: Default::default(),
4229 selection: Default::default(),
4230 guest_selections: Default::default(),
4231 syntax: Default::default(),
4232 diagnostic_path_header: DiagnosticPathHeader {
4233 container: Default::default(),
4234 filename: ContainedText {
4235 container: Default::default(),
4236 text: text.clone(),
4237 },
4238 path: ContainedText {
4239 container: Default::default(),
4240 text: text.clone(),
4241 },
4242 text_scale_factor: 1.,
4243 },
4244 diagnostic_header: DiagnosticHeader {
4245 container: Default::default(),
4246 message: ContainedLabel {
4247 container: Default::default(),
4248 label: text.clone().into(),
4249 },
4250 code: ContainedText {
4251 container: Default::default(),
4252 text: text.clone(),
4253 },
4254 icon_width_factor: 1.,
4255 text_scale_factor: 1.,
4256 },
4257 error_diagnostic: default_diagnostic_style.clone(),
4258 invalid_error_diagnostic: default_diagnostic_style.clone(),
4259 warning_diagnostic: default_diagnostic_style.clone(),
4260 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4261 information_diagnostic: default_diagnostic_style.clone(),
4262 invalid_information_diagnostic: default_diagnostic_style.clone(),
4263 hint_diagnostic: default_diagnostic_style.clone(),
4264 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4265 autocomplete: Default::default(),
4266 }
4267 },
4268 }
4269 }
4270}
4271
4272fn compute_scroll_position(
4273 snapshot: &DisplaySnapshot,
4274 mut scroll_position: Vector2F,
4275 scroll_top_anchor: &Option<Anchor>,
4276) -> Vector2F {
4277 if let Some(anchor) = scroll_top_anchor {
4278 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4279 scroll_position.set_y(scroll_top + scroll_position.y());
4280 } else {
4281 scroll_position.set_y(0.);
4282 }
4283 scroll_position
4284}
4285
4286#[derive(Copy, Clone)]
4287pub enum Event {
4288 Activate,
4289 Edited,
4290 Blurred,
4291 Dirtied,
4292 Saved,
4293 TitleChanged,
4294 SelectionsChanged,
4295 Closed,
4296}
4297
4298impl Entity for Editor {
4299 type Event = Event;
4300}
4301
4302impl View for Editor {
4303 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4304 let settings = (self.build_settings)(cx);
4305 self.display_map.update(cx, |map, cx| {
4306 map.set_font(
4307 settings.style.text.font_id,
4308 settings.style.text.font_size,
4309 cx,
4310 )
4311 });
4312 EditorElement::new(self.handle.clone(), settings).boxed()
4313 }
4314
4315 fn ui_name() -> &'static str {
4316 "Editor"
4317 }
4318
4319 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4320 self.focused = true;
4321 self.blink_cursors(self.blink_epoch, cx);
4322 self.buffer.update(cx, |buffer, cx| {
4323 buffer.avoid_grouping_next_transaction(cx);
4324 buffer.set_active_selections(&self.selections, cx)
4325 });
4326 }
4327
4328 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4329 self.focused = false;
4330 self.show_local_cursors = false;
4331 self.buffer
4332 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4333 self.hide_completions(cx);
4334 cx.emit(Event::Blurred);
4335 cx.notify();
4336 }
4337
4338 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4339 let mut cx = Self::default_keymap_context();
4340 let mode = match self.mode {
4341 EditorMode::SingleLine => "single_line",
4342 EditorMode::AutoHeight { .. } => "auto_height",
4343 EditorMode::Full => "full",
4344 };
4345 cx.map.insert("mode".into(), mode.into());
4346 if self.completion_state.is_some() {
4347 cx.set.insert("completing".into());
4348 }
4349 cx
4350 }
4351}
4352
4353impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4354 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4355 let start = self.start.to_point(buffer);
4356 let end = self.end.to_point(buffer);
4357 if self.reversed {
4358 end..start
4359 } else {
4360 start..end
4361 }
4362 }
4363
4364 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4365 let start = self.start.to_offset(buffer);
4366 let end = self.end.to_offset(buffer);
4367 if self.reversed {
4368 end..start
4369 } else {
4370 start..end
4371 }
4372 }
4373
4374 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4375 let start = self
4376 .start
4377 .to_point(&map.buffer_snapshot)
4378 .to_display_point(map);
4379 let end = self
4380 .end
4381 .to_point(&map.buffer_snapshot)
4382 .to_display_point(map);
4383 if self.reversed {
4384 end..start
4385 } else {
4386 start..end
4387 }
4388 }
4389
4390 fn spanned_rows(
4391 &self,
4392 include_end_if_at_line_start: bool,
4393 map: &DisplaySnapshot,
4394 ) -> Range<u32> {
4395 let start = self.start.to_point(&map.buffer_snapshot);
4396 let mut end = self.end.to_point(&map.buffer_snapshot);
4397 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4398 end.row -= 1;
4399 }
4400
4401 let buffer_start = map.prev_line_boundary(start).0;
4402 let buffer_end = map.next_line_boundary(end).0;
4403 buffer_start.row..buffer_end.row + 1
4404 }
4405}
4406
4407pub fn diagnostic_block_renderer(
4408 diagnostic: Diagnostic,
4409 is_valid: bool,
4410 build_settings: BuildSettings,
4411) -> RenderBlock {
4412 let mut highlighted_lines = Vec::new();
4413 for line in diagnostic.message.lines() {
4414 highlighted_lines.push(highlight_diagnostic_message(line));
4415 }
4416
4417 Arc::new(move |cx: &BlockContext| {
4418 let settings = build_settings(cx);
4419 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4420 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4421 Flex::column()
4422 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4423 Label::new(
4424 line.clone(),
4425 style.message.clone().with_font_size(font_size),
4426 )
4427 .with_highlights(highlights.clone())
4428 .contained()
4429 .with_margin_left(cx.anchor_x)
4430 .boxed()
4431 }))
4432 .aligned()
4433 .left()
4434 .boxed()
4435 })
4436}
4437
4438pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4439 let mut message_without_backticks = String::new();
4440 let mut prev_offset = 0;
4441 let mut inside_block = false;
4442 let mut highlights = Vec::new();
4443 for (match_ix, (offset, _)) in message
4444 .match_indices('`')
4445 .chain([(message.len(), "")])
4446 .enumerate()
4447 {
4448 message_without_backticks.push_str(&message[prev_offset..offset]);
4449 if inside_block {
4450 highlights.extend(prev_offset - match_ix..offset - match_ix);
4451 }
4452
4453 inside_block = !inside_block;
4454 prev_offset = offset + 1;
4455 }
4456
4457 (message_without_backticks, highlights)
4458}
4459
4460pub fn diagnostic_style(
4461 severity: DiagnosticSeverity,
4462 valid: bool,
4463 style: &EditorStyle,
4464) -> DiagnosticStyle {
4465 match (severity, valid) {
4466 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4467 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4468 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4469 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4470 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4471 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4472 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4473 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4474 _ => DiagnosticStyle {
4475 message: style.text.clone().into(),
4476 header: Default::default(),
4477 text_scale_factor: 1.,
4478 },
4479 }
4480}
4481
4482pub fn settings_builder(
4483 buffer: WeakModelHandle<MultiBuffer>,
4484 settings: watch::Receiver<workspace::Settings>,
4485) -> BuildSettings {
4486 Arc::new(move |cx| {
4487 let settings = settings.borrow();
4488 let font_cache = cx.font_cache();
4489 let font_family_id = settings.buffer_font_family;
4490 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4491 let font_properties = Default::default();
4492 let font_id = font_cache
4493 .select_font(font_family_id, &font_properties)
4494 .unwrap();
4495 let font_size = settings.buffer_font_size;
4496
4497 let mut theme = settings.theme.editor.clone();
4498 theme.text = TextStyle {
4499 color: theme.text.color,
4500 font_family_name,
4501 font_family_id,
4502 font_id,
4503 font_size,
4504 font_properties,
4505 underline: None,
4506 };
4507 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4508 let soft_wrap = match settings.soft_wrap(language) {
4509 workspace::settings::SoftWrap::None => SoftWrap::None,
4510 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4511 workspace::settings::SoftWrap::PreferredLineLength => {
4512 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4513 }
4514 };
4515
4516 EditorSettings {
4517 tab_size: settings.tab_size,
4518 soft_wrap,
4519 style: theme,
4520 }
4521 })
4522}
4523
4524#[cfg(test)]
4525mod tests {
4526 use super::*;
4527 use language::{FakeFile, LanguageConfig};
4528 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4529 use text::Point;
4530 use unindent::Unindent;
4531 use util::test::sample_text;
4532
4533 #[gpui::test]
4534 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4535 let mut now = Instant::now();
4536 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4537 let group_interval = buffer.read(cx).transaction_group_interval();
4538 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4539 let settings = EditorSettings::test(cx);
4540 let (_, editor) = cx.add_window(Default::default(), |cx| {
4541 build_editor(buffer.clone(), settings, cx)
4542 });
4543
4544 editor.update(cx, |editor, cx| {
4545 editor.start_transaction_at(now, cx);
4546 editor.select_ranges([2..4], None, cx);
4547 editor.insert("cd", cx);
4548 editor.end_transaction_at(now, cx);
4549 assert_eq!(editor.text(cx), "12cd56");
4550 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4551
4552 editor.start_transaction_at(now, cx);
4553 editor.select_ranges([4..5], None, cx);
4554 editor.insert("e", cx);
4555 editor.end_transaction_at(now, cx);
4556 assert_eq!(editor.text(cx), "12cde6");
4557 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4558
4559 now += group_interval + Duration::from_millis(1);
4560 editor.select_ranges([2..2], None, cx);
4561
4562 // Simulate an edit in another editor
4563 buffer.update(cx, |buffer, cx| {
4564 buffer.start_transaction_at(now, cx);
4565 buffer.edit([0..1], "a", cx);
4566 buffer.edit([1..1], "b", cx);
4567 buffer.end_transaction_at(now, cx);
4568 });
4569
4570 assert_eq!(editor.text(cx), "ab2cde6");
4571 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4572
4573 // Last transaction happened past the group interval in a different editor.
4574 // Undo it individually and don't restore selections.
4575 editor.undo(&Undo, cx);
4576 assert_eq!(editor.text(cx), "12cde6");
4577 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4578
4579 // First two transactions happened within the group interval in this editor.
4580 // Undo them together and restore selections.
4581 editor.undo(&Undo, cx);
4582 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4583 assert_eq!(editor.text(cx), "123456");
4584 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4585
4586 // Redo the first two transactions together.
4587 editor.redo(&Redo, cx);
4588 assert_eq!(editor.text(cx), "12cde6");
4589 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4590
4591 // Redo the last transaction on its own.
4592 editor.redo(&Redo, cx);
4593 assert_eq!(editor.text(cx), "ab2cde6");
4594 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4595
4596 // Test empty transactions.
4597 editor.start_transaction_at(now, cx);
4598 editor.end_transaction_at(now, cx);
4599 editor.undo(&Undo, cx);
4600 assert_eq!(editor.text(cx), "12cde6");
4601 });
4602 }
4603
4604 #[gpui::test]
4605 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4606 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4607 let settings = EditorSettings::test(cx);
4608 let (_, editor) =
4609 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4610
4611 editor.update(cx, |view, cx| {
4612 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4613 });
4614
4615 assert_eq!(
4616 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4617 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4618 );
4619
4620 editor.update(cx, |view, cx| {
4621 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4622 });
4623
4624 assert_eq!(
4625 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4626 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4627 );
4628
4629 editor.update(cx, |view, cx| {
4630 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4631 });
4632
4633 assert_eq!(
4634 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4635 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4636 );
4637
4638 editor.update(cx, |view, cx| {
4639 view.end_selection(cx);
4640 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4641 });
4642
4643 assert_eq!(
4644 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4645 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4646 );
4647
4648 editor.update(cx, |view, cx| {
4649 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4650 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4651 });
4652
4653 assert_eq!(
4654 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4655 [
4656 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4657 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4658 ]
4659 );
4660
4661 editor.update(cx, |view, cx| {
4662 view.end_selection(cx);
4663 });
4664
4665 assert_eq!(
4666 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4667 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4668 );
4669 }
4670
4671 #[gpui::test]
4672 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4673 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4674 let settings = EditorSettings::test(cx);
4675 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4676
4677 view.update(cx, |view, cx| {
4678 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4679 assert_eq!(
4680 view.selected_display_ranges(cx),
4681 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4682 );
4683 });
4684
4685 view.update(cx, |view, cx| {
4686 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4687 assert_eq!(
4688 view.selected_display_ranges(cx),
4689 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4690 );
4691 });
4692
4693 view.update(cx, |view, cx| {
4694 view.cancel(&Cancel, cx);
4695 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4696 assert_eq!(
4697 view.selected_display_ranges(cx),
4698 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4699 );
4700 });
4701 }
4702
4703 #[gpui::test]
4704 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4705 cx.add_window(Default::default(), |cx| {
4706 use workspace::ItemView;
4707 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4708 let settings = EditorSettings::test(&cx);
4709 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4710 let mut editor = build_editor(buffer.clone(), settings, cx);
4711 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4712
4713 // Move the cursor a small distance.
4714 // Nothing is added to the navigation history.
4715 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4716 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4717 assert!(nav_history.borrow_mut().pop_backward().is_none());
4718
4719 // Move the cursor a large distance.
4720 // The history can jump back to the previous position.
4721 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4722 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4723 editor.navigate(nav_entry.data.unwrap(), cx);
4724 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4725 assert_eq!(
4726 editor.selected_display_ranges(cx),
4727 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4728 );
4729
4730 // Move the cursor a small distance via the mouse.
4731 // Nothing is added to the navigation history.
4732 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4733 editor.end_selection(cx);
4734 assert_eq!(
4735 editor.selected_display_ranges(cx),
4736 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4737 );
4738 assert!(nav_history.borrow_mut().pop_backward().is_none());
4739
4740 // Move the cursor a large distance via the mouse.
4741 // The history can jump back to the previous position.
4742 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
4743 editor.end_selection(cx);
4744 assert_eq!(
4745 editor.selected_display_ranges(cx),
4746 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
4747 );
4748 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4749 editor.navigate(nav_entry.data.unwrap(), cx);
4750 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4751 assert_eq!(
4752 editor.selected_display_ranges(cx),
4753 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4754 );
4755
4756 editor
4757 });
4758 }
4759
4760 #[gpui::test]
4761 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4762 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4763 let settings = EditorSettings::test(cx);
4764 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4765
4766 view.update(cx, |view, cx| {
4767 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4768 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4769 view.end_selection(cx);
4770
4771 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4772 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4773 view.end_selection(cx);
4774 assert_eq!(
4775 view.selected_display_ranges(cx),
4776 [
4777 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4778 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4779 ]
4780 );
4781 });
4782
4783 view.update(cx, |view, cx| {
4784 view.cancel(&Cancel, cx);
4785 assert_eq!(
4786 view.selected_display_ranges(cx),
4787 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4788 );
4789 });
4790
4791 view.update(cx, |view, cx| {
4792 view.cancel(&Cancel, cx);
4793 assert_eq!(
4794 view.selected_display_ranges(cx),
4795 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4796 );
4797 });
4798 }
4799
4800 #[gpui::test]
4801 fn test_fold(cx: &mut gpui::MutableAppContext) {
4802 let buffer = MultiBuffer::build_simple(
4803 &"
4804 impl Foo {
4805 // Hello!
4806
4807 fn a() {
4808 1
4809 }
4810
4811 fn b() {
4812 2
4813 }
4814
4815 fn c() {
4816 3
4817 }
4818 }
4819 "
4820 .unindent(),
4821 cx,
4822 );
4823 let settings = EditorSettings::test(&cx);
4824 let (_, view) = cx.add_window(Default::default(), |cx| {
4825 build_editor(buffer.clone(), settings, cx)
4826 });
4827
4828 view.update(cx, |view, cx| {
4829 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
4830 view.fold(&Fold, cx);
4831 assert_eq!(
4832 view.display_text(cx),
4833 "
4834 impl Foo {
4835 // Hello!
4836
4837 fn a() {
4838 1
4839 }
4840
4841 fn b() {…
4842 }
4843
4844 fn c() {…
4845 }
4846 }
4847 "
4848 .unindent(),
4849 );
4850
4851 view.fold(&Fold, cx);
4852 assert_eq!(
4853 view.display_text(cx),
4854 "
4855 impl Foo {…
4856 }
4857 "
4858 .unindent(),
4859 );
4860
4861 view.unfold(&Unfold, cx);
4862 assert_eq!(
4863 view.display_text(cx),
4864 "
4865 impl Foo {
4866 // Hello!
4867
4868 fn a() {
4869 1
4870 }
4871
4872 fn b() {…
4873 }
4874
4875 fn c() {…
4876 }
4877 }
4878 "
4879 .unindent(),
4880 );
4881
4882 view.unfold(&Unfold, cx);
4883 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4884 });
4885 }
4886
4887 #[gpui::test]
4888 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4889 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4890 let settings = EditorSettings::test(&cx);
4891 let (_, view) = cx.add_window(Default::default(), |cx| {
4892 build_editor(buffer.clone(), settings, cx)
4893 });
4894
4895 buffer.update(cx, |buffer, cx| {
4896 buffer.edit(
4897 vec![
4898 Point::new(1, 0)..Point::new(1, 0),
4899 Point::new(1, 1)..Point::new(1, 1),
4900 ],
4901 "\t",
4902 cx,
4903 );
4904 });
4905
4906 view.update(cx, |view, cx| {
4907 assert_eq!(
4908 view.selected_display_ranges(cx),
4909 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4910 );
4911
4912 view.move_down(&MoveDown, cx);
4913 assert_eq!(
4914 view.selected_display_ranges(cx),
4915 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4916 );
4917
4918 view.move_right(&MoveRight, cx);
4919 assert_eq!(
4920 view.selected_display_ranges(cx),
4921 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4922 );
4923
4924 view.move_left(&MoveLeft, cx);
4925 assert_eq!(
4926 view.selected_display_ranges(cx),
4927 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4928 );
4929
4930 view.move_up(&MoveUp, cx);
4931 assert_eq!(
4932 view.selected_display_ranges(cx),
4933 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4934 );
4935
4936 view.move_to_end(&MoveToEnd, cx);
4937 assert_eq!(
4938 view.selected_display_ranges(cx),
4939 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4940 );
4941
4942 view.move_to_beginning(&MoveToBeginning, cx);
4943 assert_eq!(
4944 view.selected_display_ranges(cx),
4945 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4946 );
4947
4948 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
4949 view.select_to_beginning(&SelectToBeginning, cx);
4950 assert_eq!(
4951 view.selected_display_ranges(cx),
4952 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4953 );
4954
4955 view.select_to_end(&SelectToEnd, cx);
4956 assert_eq!(
4957 view.selected_display_ranges(cx),
4958 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4959 );
4960 });
4961 }
4962
4963 #[gpui::test]
4964 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4965 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4966 let settings = EditorSettings::test(&cx);
4967 let (_, view) = cx.add_window(Default::default(), |cx| {
4968 build_editor(buffer.clone(), settings, cx)
4969 });
4970
4971 assert_eq!('ⓐ'.len_utf8(), 3);
4972 assert_eq!('α'.len_utf8(), 2);
4973
4974 view.update(cx, |view, cx| {
4975 view.fold_ranges(
4976 vec![
4977 Point::new(0, 6)..Point::new(0, 12),
4978 Point::new(1, 2)..Point::new(1, 4),
4979 Point::new(2, 4)..Point::new(2, 8),
4980 ],
4981 cx,
4982 );
4983 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4984
4985 view.move_right(&MoveRight, cx);
4986 assert_eq!(
4987 view.selected_display_ranges(cx),
4988 &[empty_range(0, "ⓐ".len())]
4989 );
4990 view.move_right(&MoveRight, cx);
4991 assert_eq!(
4992 view.selected_display_ranges(cx),
4993 &[empty_range(0, "ⓐⓑ".len())]
4994 );
4995 view.move_right(&MoveRight, cx);
4996 assert_eq!(
4997 view.selected_display_ranges(cx),
4998 &[empty_range(0, "ⓐⓑ…".len())]
4999 );
5000
5001 view.move_down(&MoveDown, cx);
5002 assert_eq!(
5003 view.selected_display_ranges(cx),
5004 &[empty_range(1, "ab…".len())]
5005 );
5006 view.move_left(&MoveLeft, cx);
5007 assert_eq!(
5008 view.selected_display_ranges(cx),
5009 &[empty_range(1, "ab".len())]
5010 );
5011 view.move_left(&MoveLeft, cx);
5012 assert_eq!(
5013 view.selected_display_ranges(cx),
5014 &[empty_range(1, "a".len())]
5015 );
5016
5017 view.move_down(&MoveDown, cx);
5018 assert_eq!(
5019 view.selected_display_ranges(cx),
5020 &[empty_range(2, "α".len())]
5021 );
5022 view.move_right(&MoveRight, cx);
5023 assert_eq!(
5024 view.selected_display_ranges(cx),
5025 &[empty_range(2, "αβ".len())]
5026 );
5027 view.move_right(&MoveRight, cx);
5028 assert_eq!(
5029 view.selected_display_ranges(cx),
5030 &[empty_range(2, "αβ…".len())]
5031 );
5032 view.move_right(&MoveRight, cx);
5033 assert_eq!(
5034 view.selected_display_ranges(cx),
5035 &[empty_range(2, "αβ…ε".len())]
5036 );
5037
5038 view.move_up(&MoveUp, cx);
5039 assert_eq!(
5040 view.selected_display_ranges(cx),
5041 &[empty_range(1, "ab…e".len())]
5042 );
5043 view.move_up(&MoveUp, cx);
5044 assert_eq!(
5045 view.selected_display_ranges(cx),
5046 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5047 );
5048 view.move_left(&MoveLeft, cx);
5049 assert_eq!(
5050 view.selected_display_ranges(cx),
5051 &[empty_range(0, "ⓐⓑ…".len())]
5052 );
5053 view.move_left(&MoveLeft, cx);
5054 assert_eq!(
5055 view.selected_display_ranges(cx),
5056 &[empty_range(0, "ⓐⓑ".len())]
5057 );
5058 view.move_left(&MoveLeft, cx);
5059 assert_eq!(
5060 view.selected_display_ranges(cx),
5061 &[empty_range(0, "ⓐ".len())]
5062 );
5063 });
5064 }
5065
5066 #[gpui::test]
5067 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5068 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5069 let settings = EditorSettings::test(&cx);
5070 let (_, view) = cx.add_window(Default::default(), |cx| {
5071 build_editor(buffer.clone(), settings, cx)
5072 });
5073 view.update(cx, |view, cx| {
5074 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5075 view.move_down(&MoveDown, cx);
5076 assert_eq!(
5077 view.selected_display_ranges(cx),
5078 &[empty_range(1, "abcd".len())]
5079 );
5080
5081 view.move_down(&MoveDown, cx);
5082 assert_eq!(
5083 view.selected_display_ranges(cx),
5084 &[empty_range(2, "αβγ".len())]
5085 );
5086
5087 view.move_down(&MoveDown, cx);
5088 assert_eq!(
5089 view.selected_display_ranges(cx),
5090 &[empty_range(3, "abcd".len())]
5091 );
5092
5093 view.move_down(&MoveDown, cx);
5094 assert_eq!(
5095 view.selected_display_ranges(cx),
5096 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5097 );
5098
5099 view.move_up(&MoveUp, cx);
5100 assert_eq!(
5101 view.selected_display_ranges(cx),
5102 &[empty_range(3, "abcd".len())]
5103 );
5104
5105 view.move_up(&MoveUp, cx);
5106 assert_eq!(
5107 view.selected_display_ranges(cx),
5108 &[empty_range(2, "αβγ".len())]
5109 );
5110 });
5111 }
5112
5113 #[gpui::test]
5114 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5115 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5116 let settings = EditorSettings::test(&cx);
5117 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5118 view.update(cx, |view, cx| {
5119 view.select_display_ranges(
5120 &[
5121 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5122 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5123 ],
5124 cx,
5125 );
5126 });
5127
5128 view.update(cx, |view, cx| {
5129 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5130 assert_eq!(
5131 view.selected_display_ranges(cx),
5132 &[
5133 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5134 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5135 ]
5136 );
5137 });
5138
5139 view.update(cx, |view, cx| {
5140 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5141 assert_eq!(
5142 view.selected_display_ranges(cx),
5143 &[
5144 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5145 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5146 ]
5147 );
5148 });
5149
5150 view.update(cx, |view, cx| {
5151 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5152 assert_eq!(
5153 view.selected_display_ranges(cx),
5154 &[
5155 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5156 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5157 ]
5158 );
5159 });
5160
5161 view.update(cx, |view, cx| {
5162 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5163 assert_eq!(
5164 view.selected_display_ranges(cx),
5165 &[
5166 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5167 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5168 ]
5169 );
5170 });
5171
5172 // Moving to the end of line again is a no-op.
5173 view.update(cx, |view, cx| {
5174 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5175 assert_eq!(
5176 view.selected_display_ranges(cx),
5177 &[
5178 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5179 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5180 ]
5181 );
5182 });
5183
5184 view.update(cx, |view, cx| {
5185 view.move_left(&MoveLeft, cx);
5186 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5187 assert_eq!(
5188 view.selected_display_ranges(cx),
5189 &[
5190 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5191 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5192 ]
5193 );
5194 });
5195
5196 view.update(cx, |view, cx| {
5197 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5198 assert_eq!(
5199 view.selected_display_ranges(cx),
5200 &[
5201 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5202 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5203 ]
5204 );
5205 });
5206
5207 view.update(cx, |view, cx| {
5208 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5209 assert_eq!(
5210 view.selected_display_ranges(cx),
5211 &[
5212 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5213 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5214 ]
5215 );
5216 });
5217
5218 view.update(cx, |view, cx| {
5219 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5220 assert_eq!(
5221 view.selected_display_ranges(cx),
5222 &[
5223 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5224 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5225 ]
5226 );
5227 });
5228
5229 view.update(cx, |view, cx| {
5230 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5231 assert_eq!(view.display_text(cx), "ab\n de");
5232 assert_eq!(
5233 view.selected_display_ranges(cx),
5234 &[
5235 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5236 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5237 ]
5238 );
5239 });
5240
5241 view.update(cx, |view, cx| {
5242 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5243 assert_eq!(view.display_text(cx), "\n");
5244 assert_eq!(
5245 view.selected_display_ranges(cx),
5246 &[
5247 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5248 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5249 ]
5250 );
5251 });
5252 }
5253
5254 #[gpui::test]
5255 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5256 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5257 let settings = EditorSettings::test(&cx);
5258 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5259 view.update(cx, |view, cx| {
5260 view.select_display_ranges(
5261 &[
5262 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5263 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5264 ],
5265 cx,
5266 );
5267 });
5268
5269 view.update(cx, |view, cx| {
5270 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5271 assert_eq!(
5272 view.selected_display_ranges(cx),
5273 &[
5274 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5275 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5276 ]
5277 );
5278 });
5279
5280 view.update(cx, |view, cx| {
5281 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5282 assert_eq!(
5283 view.selected_display_ranges(cx),
5284 &[
5285 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5286 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5287 ]
5288 );
5289 });
5290
5291 view.update(cx, |view, cx| {
5292 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5293 assert_eq!(
5294 view.selected_display_ranges(cx),
5295 &[
5296 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5297 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5298 ]
5299 );
5300 });
5301
5302 view.update(cx, |view, cx| {
5303 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5304 assert_eq!(
5305 view.selected_display_ranges(cx),
5306 &[
5307 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5308 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5309 ]
5310 );
5311 });
5312
5313 view.update(cx, |view, cx| {
5314 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5315 assert_eq!(
5316 view.selected_display_ranges(cx),
5317 &[
5318 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5319 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5320 ]
5321 );
5322 });
5323
5324 view.update(cx, |view, cx| {
5325 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5326 assert_eq!(
5327 view.selected_display_ranges(cx),
5328 &[
5329 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5330 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5331 ]
5332 );
5333 });
5334
5335 view.update(cx, |view, cx| {
5336 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5337 assert_eq!(
5338 view.selected_display_ranges(cx),
5339 &[
5340 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5341 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5342 ]
5343 );
5344 });
5345
5346 view.update(cx, |view, cx| {
5347 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5348 assert_eq!(
5349 view.selected_display_ranges(cx),
5350 &[
5351 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5352 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5353 ]
5354 );
5355 });
5356
5357 view.update(cx, |view, cx| {
5358 view.move_right(&MoveRight, cx);
5359 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5360 assert_eq!(
5361 view.selected_display_ranges(cx),
5362 &[
5363 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5364 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5365 ]
5366 );
5367 });
5368
5369 view.update(cx, |view, cx| {
5370 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5371 assert_eq!(
5372 view.selected_display_ranges(cx),
5373 &[
5374 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5375 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5376 ]
5377 );
5378 });
5379
5380 view.update(cx, |view, cx| {
5381 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5382 assert_eq!(
5383 view.selected_display_ranges(cx),
5384 &[
5385 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5386 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5387 ]
5388 );
5389 });
5390 }
5391
5392 #[gpui::test]
5393 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5394 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5395 let settings = EditorSettings::test(&cx);
5396 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5397
5398 view.update(cx, |view, cx| {
5399 view.set_wrap_width(Some(140.), cx);
5400 assert_eq!(
5401 view.display_text(cx),
5402 "use one::{\n two::three::\n four::five\n};"
5403 );
5404
5405 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5406
5407 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5408 assert_eq!(
5409 view.selected_display_ranges(cx),
5410 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5411 );
5412
5413 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5414 assert_eq!(
5415 view.selected_display_ranges(cx),
5416 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5417 );
5418
5419 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5420 assert_eq!(
5421 view.selected_display_ranges(cx),
5422 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5423 );
5424
5425 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5426 assert_eq!(
5427 view.selected_display_ranges(cx),
5428 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5429 );
5430
5431 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5432 assert_eq!(
5433 view.selected_display_ranges(cx),
5434 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5435 );
5436
5437 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5438 assert_eq!(
5439 view.selected_display_ranges(cx),
5440 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5441 );
5442 });
5443 }
5444
5445 #[gpui::test]
5446 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5447 let buffer = MultiBuffer::build_simple("one two three four", cx);
5448 let settings = EditorSettings::test(&cx);
5449 let (_, view) = cx.add_window(Default::default(), |cx| {
5450 build_editor(buffer.clone(), settings, cx)
5451 });
5452
5453 view.update(cx, |view, cx| {
5454 view.select_display_ranges(
5455 &[
5456 // an empty selection - the preceding word fragment is deleted
5457 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5458 // characters selected - they are deleted
5459 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5460 ],
5461 cx,
5462 );
5463 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5464 });
5465
5466 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5467
5468 view.update(cx, |view, cx| {
5469 view.select_display_ranges(
5470 &[
5471 // an empty selection - the following word fragment is deleted
5472 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5473 // characters selected - they are deleted
5474 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5475 ],
5476 cx,
5477 );
5478 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5479 });
5480
5481 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5482 }
5483
5484 #[gpui::test]
5485 fn test_newline(cx: &mut gpui::MutableAppContext) {
5486 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5487 let settings = EditorSettings::test(&cx);
5488 let (_, view) = cx.add_window(Default::default(), |cx| {
5489 build_editor(buffer.clone(), settings, cx)
5490 });
5491
5492 view.update(cx, |view, cx| {
5493 view.select_display_ranges(
5494 &[
5495 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5496 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5497 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5498 ],
5499 cx,
5500 );
5501
5502 view.newline(&Newline, cx);
5503 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5504 });
5505 }
5506
5507 #[gpui::test]
5508 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5509 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5510 let settings = EditorSettings::test(&cx);
5511 let (_, view) = cx.add_window(Default::default(), |cx| {
5512 build_editor(buffer.clone(), settings, cx)
5513 });
5514
5515 view.update(cx, |view, cx| {
5516 // two selections on the same line
5517 view.select_display_ranges(
5518 &[
5519 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5520 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5521 ],
5522 cx,
5523 );
5524
5525 // indent from mid-tabstop to full tabstop
5526 view.tab(&Tab, cx);
5527 assert_eq!(view.text(cx), " one two\nthree\n four");
5528 assert_eq!(
5529 view.selected_display_ranges(cx),
5530 &[
5531 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5532 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5533 ]
5534 );
5535
5536 // outdent from 1 tabstop to 0 tabstops
5537 view.outdent(&Outdent, cx);
5538 assert_eq!(view.text(cx), "one two\nthree\n four");
5539 assert_eq!(
5540 view.selected_display_ranges(cx),
5541 &[
5542 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5543 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5544 ]
5545 );
5546
5547 // select across line ending
5548 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5549
5550 // indent and outdent affect only the preceding line
5551 view.tab(&Tab, cx);
5552 assert_eq!(view.text(cx), "one two\n three\n four");
5553 assert_eq!(
5554 view.selected_display_ranges(cx),
5555 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5556 );
5557 view.outdent(&Outdent, cx);
5558 assert_eq!(view.text(cx), "one two\nthree\n four");
5559 assert_eq!(
5560 view.selected_display_ranges(cx),
5561 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5562 );
5563
5564 // Ensure that indenting/outdenting works when the cursor is at column 0.
5565 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5566 view.tab(&Tab, cx);
5567 assert_eq!(view.text(cx), "one two\n three\n four");
5568 assert_eq!(
5569 view.selected_display_ranges(cx),
5570 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5571 );
5572
5573 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5574 view.outdent(&Outdent, cx);
5575 assert_eq!(view.text(cx), "one two\nthree\n four");
5576 assert_eq!(
5577 view.selected_display_ranges(cx),
5578 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5579 );
5580 });
5581 }
5582
5583 #[gpui::test]
5584 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5585 let buffer =
5586 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5587 let settings = EditorSettings::test(&cx);
5588 let (_, view) = cx.add_window(Default::default(), |cx| {
5589 build_editor(buffer.clone(), settings, cx)
5590 });
5591
5592 view.update(cx, |view, cx| {
5593 view.select_display_ranges(
5594 &[
5595 // an empty selection - the preceding character is deleted
5596 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5597 // one character selected - it is deleted
5598 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5599 // a line suffix selected - it is deleted
5600 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5601 ],
5602 cx,
5603 );
5604 view.backspace(&Backspace, cx);
5605 });
5606
5607 assert_eq!(
5608 buffer.read(cx).read(cx).text(),
5609 "oe two three\nfou five six\nseven ten\n"
5610 );
5611 }
5612
5613 #[gpui::test]
5614 fn test_delete(cx: &mut gpui::MutableAppContext) {
5615 let buffer =
5616 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5617 let settings = EditorSettings::test(&cx);
5618 let (_, view) = cx.add_window(Default::default(), |cx| {
5619 build_editor(buffer.clone(), settings, cx)
5620 });
5621
5622 view.update(cx, |view, cx| {
5623 view.select_display_ranges(
5624 &[
5625 // an empty selection - the following character is deleted
5626 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5627 // one character selected - it is deleted
5628 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5629 // a line suffix selected - it is deleted
5630 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5631 ],
5632 cx,
5633 );
5634 view.delete(&Delete, cx);
5635 });
5636
5637 assert_eq!(
5638 buffer.read(cx).read(cx).text(),
5639 "on two three\nfou five six\nseven ten\n"
5640 );
5641 }
5642
5643 #[gpui::test]
5644 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5645 let settings = EditorSettings::test(&cx);
5646 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5647 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5648 view.update(cx, |view, cx| {
5649 view.select_display_ranges(
5650 &[
5651 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5652 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5653 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5654 ],
5655 cx,
5656 );
5657 view.delete_line(&DeleteLine, cx);
5658 assert_eq!(view.display_text(cx), "ghi");
5659 assert_eq!(
5660 view.selected_display_ranges(cx),
5661 vec![
5662 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5663 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5664 ]
5665 );
5666 });
5667
5668 let settings = EditorSettings::test(&cx);
5669 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5670 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5671 view.update(cx, |view, cx| {
5672 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5673 view.delete_line(&DeleteLine, cx);
5674 assert_eq!(view.display_text(cx), "ghi\n");
5675 assert_eq!(
5676 view.selected_display_ranges(cx),
5677 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5678 );
5679 });
5680 }
5681
5682 #[gpui::test]
5683 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5684 let settings = EditorSettings::test(&cx);
5685 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5686 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5687 view.update(cx, |view, cx| {
5688 view.select_display_ranges(
5689 &[
5690 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5691 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5692 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5693 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5694 ],
5695 cx,
5696 );
5697 view.duplicate_line(&DuplicateLine, cx);
5698 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5699 assert_eq!(
5700 view.selected_display_ranges(cx),
5701 vec![
5702 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5703 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5704 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5705 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5706 ]
5707 );
5708 });
5709
5710 let settings = EditorSettings::test(&cx);
5711 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5712 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5713 view.update(cx, |view, cx| {
5714 view.select_display_ranges(
5715 &[
5716 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5717 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5718 ],
5719 cx,
5720 );
5721 view.duplicate_line(&DuplicateLine, cx);
5722 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5723 assert_eq!(
5724 view.selected_display_ranges(cx),
5725 vec![
5726 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5727 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5728 ]
5729 );
5730 });
5731 }
5732
5733 #[gpui::test]
5734 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5735 let settings = EditorSettings::test(&cx);
5736 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5737 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5738 view.update(cx, |view, cx| {
5739 view.fold_ranges(
5740 vec![
5741 Point::new(0, 2)..Point::new(1, 2),
5742 Point::new(2, 3)..Point::new(4, 1),
5743 Point::new(7, 0)..Point::new(8, 4),
5744 ],
5745 cx,
5746 );
5747 view.select_display_ranges(
5748 &[
5749 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5750 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5751 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5752 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5753 ],
5754 cx,
5755 );
5756 assert_eq!(
5757 view.display_text(cx),
5758 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5759 );
5760
5761 view.move_line_up(&MoveLineUp, cx);
5762 assert_eq!(
5763 view.display_text(cx),
5764 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5765 );
5766 assert_eq!(
5767 view.selected_display_ranges(cx),
5768 vec![
5769 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5770 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5771 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5772 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5773 ]
5774 );
5775 });
5776
5777 view.update(cx, |view, cx| {
5778 view.move_line_down(&MoveLineDown, cx);
5779 assert_eq!(
5780 view.display_text(cx),
5781 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5782 );
5783 assert_eq!(
5784 view.selected_display_ranges(cx),
5785 vec![
5786 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5787 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5788 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5789 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5790 ]
5791 );
5792 });
5793
5794 view.update(cx, |view, cx| {
5795 view.move_line_down(&MoveLineDown, cx);
5796 assert_eq!(
5797 view.display_text(cx),
5798 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5799 );
5800 assert_eq!(
5801 view.selected_display_ranges(cx),
5802 vec![
5803 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5804 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5805 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5806 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5807 ]
5808 );
5809 });
5810
5811 view.update(cx, |view, cx| {
5812 view.move_line_up(&MoveLineUp, cx);
5813 assert_eq!(
5814 view.display_text(cx),
5815 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5816 );
5817 assert_eq!(
5818 view.selected_display_ranges(cx),
5819 vec![
5820 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5821 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5822 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5823 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5824 ]
5825 );
5826 });
5827 }
5828
5829 #[gpui::test]
5830 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5831 let settings = EditorSettings::test(&cx);
5832 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5833 let snapshot = buffer.read(cx).snapshot(cx);
5834 let (_, editor) =
5835 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5836 editor.update(cx, |editor, cx| {
5837 editor.insert_blocks(
5838 [BlockProperties {
5839 position: snapshot.anchor_after(Point::new(2, 0)),
5840 disposition: BlockDisposition::Below,
5841 height: 1,
5842 render: Arc::new(|_| Empty::new().boxed()),
5843 }],
5844 cx,
5845 );
5846 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5847 editor.move_line_down(&MoveLineDown, cx);
5848 });
5849 }
5850
5851 #[gpui::test]
5852 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5853 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5854 let settings = EditorSettings::test(&cx);
5855 let view = cx
5856 .add_window(Default::default(), |cx| {
5857 build_editor(buffer.clone(), settings, cx)
5858 })
5859 .1;
5860
5861 // Cut with three selections. Clipboard text is divided into three slices.
5862 view.update(cx, |view, cx| {
5863 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5864 view.cut(&Cut, cx);
5865 assert_eq!(view.display_text(cx), "two four six ");
5866 });
5867
5868 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5869 view.update(cx, |view, cx| {
5870 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5871 view.paste(&Paste, cx);
5872 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5873 assert_eq!(
5874 view.selected_display_ranges(cx),
5875 &[
5876 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5877 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5878 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5879 ]
5880 );
5881 });
5882
5883 // Paste again but with only two cursors. Since the number of cursors doesn't
5884 // match the number of slices in the clipboard, the entire clipboard text
5885 // is pasted at each cursor.
5886 view.update(cx, |view, cx| {
5887 view.select_ranges(vec![0..0, 31..31], None, cx);
5888 view.handle_input(&Input("( ".into()), cx);
5889 view.paste(&Paste, cx);
5890 view.handle_input(&Input(") ".into()), cx);
5891 assert_eq!(
5892 view.display_text(cx),
5893 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5894 );
5895 });
5896
5897 view.update(cx, |view, cx| {
5898 view.select_ranges(vec![0..0], None, cx);
5899 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5900 assert_eq!(
5901 view.display_text(cx),
5902 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5903 );
5904 });
5905
5906 // Cut with three selections, one of which is full-line.
5907 view.update(cx, |view, cx| {
5908 view.select_display_ranges(
5909 &[
5910 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5911 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5912 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5913 ],
5914 cx,
5915 );
5916 view.cut(&Cut, cx);
5917 assert_eq!(
5918 view.display_text(cx),
5919 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5920 );
5921 });
5922
5923 // Paste with three selections, noticing how the copied selection that was full-line
5924 // gets inserted before the second cursor.
5925 view.update(cx, |view, cx| {
5926 view.select_display_ranges(
5927 &[
5928 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5929 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5930 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5931 ],
5932 cx,
5933 );
5934 view.paste(&Paste, cx);
5935 assert_eq!(
5936 view.display_text(cx),
5937 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5938 );
5939 assert_eq!(
5940 view.selected_display_ranges(cx),
5941 &[
5942 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5943 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5944 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5945 ]
5946 );
5947 });
5948
5949 // Copy with a single cursor only, which writes the whole line into the clipboard.
5950 view.update(cx, |view, cx| {
5951 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
5952 view.copy(&Copy, cx);
5953 });
5954
5955 // Paste with three selections, noticing how the copied full-line selection is inserted
5956 // before the empty selections but replaces the selection that is non-empty.
5957 view.update(cx, |view, cx| {
5958 view.select_display_ranges(
5959 &[
5960 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5961 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5962 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5963 ],
5964 cx,
5965 );
5966 view.paste(&Paste, cx);
5967 assert_eq!(
5968 view.display_text(cx),
5969 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5970 );
5971 assert_eq!(
5972 view.selected_display_ranges(cx),
5973 &[
5974 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5975 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5976 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5977 ]
5978 );
5979 });
5980 }
5981
5982 #[gpui::test]
5983 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5984 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5985 let settings = EditorSettings::test(&cx);
5986 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5987 view.update(cx, |view, cx| {
5988 view.select_all(&SelectAll, cx);
5989 assert_eq!(
5990 view.selected_display_ranges(cx),
5991 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5992 );
5993 });
5994 }
5995
5996 #[gpui::test]
5997 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5998 let settings = EditorSettings::test(&cx);
5999 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6000 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6001 view.update(cx, |view, cx| {
6002 view.select_display_ranges(
6003 &[
6004 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6005 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6006 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6007 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6008 ],
6009 cx,
6010 );
6011 view.select_line(&SelectLine, cx);
6012 assert_eq!(
6013 view.selected_display_ranges(cx),
6014 vec![
6015 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6016 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6017 ]
6018 );
6019 });
6020
6021 view.update(cx, |view, cx| {
6022 view.select_line(&SelectLine, cx);
6023 assert_eq!(
6024 view.selected_display_ranges(cx),
6025 vec![
6026 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6027 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6028 ]
6029 );
6030 });
6031
6032 view.update(cx, |view, cx| {
6033 view.select_line(&SelectLine, cx);
6034 assert_eq!(
6035 view.selected_display_ranges(cx),
6036 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6037 );
6038 });
6039 }
6040
6041 #[gpui::test]
6042 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6043 let settings = EditorSettings::test(&cx);
6044 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6045 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6046 view.update(cx, |view, cx| {
6047 view.fold_ranges(
6048 vec![
6049 Point::new(0, 2)..Point::new(1, 2),
6050 Point::new(2, 3)..Point::new(4, 1),
6051 Point::new(7, 0)..Point::new(8, 4),
6052 ],
6053 cx,
6054 );
6055 view.select_display_ranges(
6056 &[
6057 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6058 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6059 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6060 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6061 ],
6062 cx,
6063 );
6064 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6065 });
6066
6067 view.update(cx, |view, cx| {
6068 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6069 assert_eq!(
6070 view.display_text(cx),
6071 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6072 );
6073 assert_eq!(
6074 view.selected_display_ranges(cx),
6075 [
6076 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6077 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6078 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6079 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6080 ]
6081 );
6082 });
6083
6084 view.update(cx, |view, cx| {
6085 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6086 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6087 assert_eq!(
6088 view.display_text(cx),
6089 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6090 );
6091 assert_eq!(
6092 view.selected_display_ranges(cx),
6093 [
6094 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6095 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6096 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6097 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6098 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6099 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6100 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6101 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6102 ]
6103 );
6104 });
6105 }
6106
6107 #[gpui::test]
6108 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6109 let settings = EditorSettings::test(&cx);
6110 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6111 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6112
6113 view.update(cx, |view, cx| {
6114 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6115 });
6116 view.update(cx, |view, cx| {
6117 view.add_selection_above(&AddSelectionAbove, cx);
6118 assert_eq!(
6119 view.selected_display_ranges(cx),
6120 vec![
6121 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6122 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6123 ]
6124 );
6125 });
6126
6127 view.update(cx, |view, cx| {
6128 view.add_selection_above(&AddSelectionAbove, cx);
6129 assert_eq!(
6130 view.selected_display_ranges(cx),
6131 vec![
6132 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6133 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6134 ]
6135 );
6136 });
6137
6138 view.update(cx, |view, cx| {
6139 view.add_selection_below(&AddSelectionBelow, cx);
6140 assert_eq!(
6141 view.selected_display_ranges(cx),
6142 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6143 );
6144 });
6145
6146 view.update(cx, |view, cx| {
6147 view.add_selection_below(&AddSelectionBelow, cx);
6148 assert_eq!(
6149 view.selected_display_ranges(cx),
6150 vec![
6151 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6152 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6153 ]
6154 );
6155 });
6156
6157 view.update(cx, |view, cx| {
6158 view.add_selection_below(&AddSelectionBelow, cx);
6159 assert_eq!(
6160 view.selected_display_ranges(cx),
6161 vec![
6162 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6163 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6164 ]
6165 );
6166 });
6167
6168 view.update(cx, |view, cx| {
6169 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6170 });
6171 view.update(cx, |view, cx| {
6172 view.add_selection_below(&AddSelectionBelow, cx);
6173 assert_eq!(
6174 view.selected_display_ranges(cx),
6175 vec![
6176 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6177 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6178 ]
6179 );
6180 });
6181
6182 view.update(cx, |view, cx| {
6183 view.add_selection_below(&AddSelectionBelow, cx);
6184 assert_eq!(
6185 view.selected_display_ranges(cx),
6186 vec![
6187 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6188 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6189 ]
6190 );
6191 });
6192
6193 view.update(cx, |view, cx| {
6194 view.add_selection_above(&AddSelectionAbove, cx);
6195 assert_eq!(
6196 view.selected_display_ranges(cx),
6197 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6198 );
6199 });
6200
6201 view.update(cx, |view, cx| {
6202 view.add_selection_above(&AddSelectionAbove, cx);
6203 assert_eq!(
6204 view.selected_display_ranges(cx),
6205 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6206 );
6207 });
6208
6209 view.update(cx, |view, cx| {
6210 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6211 view.add_selection_below(&AddSelectionBelow, cx);
6212 assert_eq!(
6213 view.selected_display_ranges(cx),
6214 vec![
6215 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6216 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6217 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6218 ]
6219 );
6220 });
6221
6222 view.update(cx, |view, cx| {
6223 view.add_selection_below(&AddSelectionBelow, cx);
6224 assert_eq!(
6225 view.selected_display_ranges(cx),
6226 vec![
6227 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6228 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6229 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6230 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6231 ]
6232 );
6233 });
6234
6235 view.update(cx, |view, cx| {
6236 view.add_selection_above(&AddSelectionAbove, cx);
6237 assert_eq!(
6238 view.selected_display_ranges(cx),
6239 vec![
6240 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6241 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6242 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6243 ]
6244 );
6245 });
6246
6247 view.update(cx, |view, cx| {
6248 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6249 });
6250 view.update(cx, |view, cx| {
6251 view.add_selection_above(&AddSelectionAbove, cx);
6252 assert_eq!(
6253 view.selected_display_ranges(cx),
6254 vec![
6255 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6256 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6257 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6258 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6259 ]
6260 );
6261 });
6262
6263 view.update(cx, |view, cx| {
6264 view.add_selection_below(&AddSelectionBelow, cx);
6265 assert_eq!(
6266 view.selected_display_ranges(cx),
6267 vec![
6268 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6269 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6270 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6271 ]
6272 );
6273 });
6274 }
6275
6276 #[gpui::test]
6277 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6278 let settings = cx.read(EditorSettings::test);
6279 let language = Arc::new(Language::new(
6280 LanguageConfig::default(),
6281 Some(tree_sitter_rust::language()),
6282 ));
6283
6284 let text = r#"
6285 use mod1::mod2::{mod3, mod4};
6286
6287 fn fn_1(param1: bool, param2: &str) {
6288 let var1 = "text";
6289 }
6290 "#
6291 .unindent();
6292
6293 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6294 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6295 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6296 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6297 .await;
6298
6299 view.update(&mut cx, |view, cx| {
6300 view.select_display_ranges(
6301 &[
6302 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6303 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6304 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6305 ],
6306 cx,
6307 );
6308 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6309 });
6310 assert_eq!(
6311 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6312 &[
6313 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6314 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6315 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6316 ]
6317 );
6318
6319 view.update(&mut cx, |view, cx| {
6320 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6321 });
6322 assert_eq!(
6323 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6324 &[
6325 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6326 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6327 ]
6328 );
6329
6330 view.update(&mut cx, |view, cx| {
6331 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6332 });
6333 assert_eq!(
6334 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6335 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6336 );
6337
6338 // Trying to expand the selected syntax node one more time has no effect.
6339 view.update(&mut cx, |view, cx| {
6340 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6341 });
6342 assert_eq!(
6343 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6344 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6345 );
6346
6347 view.update(&mut cx, |view, cx| {
6348 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6349 });
6350 assert_eq!(
6351 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6352 &[
6353 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6354 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6355 ]
6356 );
6357
6358 view.update(&mut cx, |view, cx| {
6359 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6360 });
6361 assert_eq!(
6362 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6363 &[
6364 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6365 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6366 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6367 ]
6368 );
6369
6370 view.update(&mut cx, |view, cx| {
6371 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6372 });
6373 assert_eq!(
6374 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6375 &[
6376 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6377 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6378 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6379 ]
6380 );
6381
6382 // Trying to shrink the selected syntax node one more time has no effect.
6383 view.update(&mut cx, |view, cx| {
6384 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6385 });
6386 assert_eq!(
6387 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6388 &[
6389 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6390 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6391 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6392 ]
6393 );
6394
6395 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6396 // a fold.
6397 view.update(&mut cx, |view, cx| {
6398 view.fold_ranges(
6399 vec![
6400 Point::new(0, 21)..Point::new(0, 24),
6401 Point::new(3, 20)..Point::new(3, 22),
6402 ],
6403 cx,
6404 );
6405 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6406 });
6407 assert_eq!(
6408 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6409 &[
6410 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6411 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6412 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6413 ]
6414 );
6415 }
6416
6417 #[gpui::test]
6418 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6419 let settings = cx.read(EditorSettings::test);
6420 let language = Arc::new(
6421 Language::new(
6422 LanguageConfig {
6423 brackets: vec![
6424 BracketPair {
6425 start: "{".to_string(),
6426 end: "}".to_string(),
6427 close: false,
6428 newline: true,
6429 },
6430 BracketPair {
6431 start: "(".to_string(),
6432 end: ")".to_string(),
6433 close: false,
6434 newline: true,
6435 },
6436 ],
6437 ..Default::default()
6438 },
6439 Some(tree_sitter_rust::language()),
6440 )
6441 .with_indents_query(
6442 r#"
6443 (_ "(" ")" @end) @indent
6444 (_ "{" "}" @end) @indent
6445 "#,
6446 )
6447 .unwrap(),
6448 );
6449
6450 let text = "fn a() {}";
6451
6452 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6453 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6454 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6455 editor
6456 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6457 .await;
6458
6459 editor.update(&mut cx, |editor, cx| {
6460 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6461 editor.newline(&Newline, cx);
6462 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6463 assert_eq!(
6464 editor.selected_ranges(cx),
6465 &[
6466 Point::new(1, 4)..Point::new(1, 4),
6467 Point::new(3, 4)..Point::new(3, 4),
6468 Point::new(5, 0)..Point::new(5, 0)
6469 ]
6470 );
6471 });
6472 }
6473
6474 #[gpui::test]
6475 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6476 let settings = cx.read(EditorSettings::test);
6477 let language = Arc::new(Language::new(
6478 LanguageConfig {
6479 brackets: vec![
6480 BracketPair {
6481 start: "{".to_string(),
6482 end: "}".to_string(),
6483 close: true,
6484 newline: true,
6485 },
6486 BracketPair {
6487 start: "/*".to_string(),
6488 end: " */".to_string(),
6489 close: true,
6490 newline: true,
6491 },
6492 ],
6493 ..Default::default()
6494 },
6495 Some(tree_sitter_rust::language()),
6496 ));
6497
6498 let text = r#"
6499 a
6500
6501 /
6502
6503 "#
6504 .unindent();
6505
6506 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6507 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6508 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6509 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6510 .await;
6511
6512 view.update(&mut cx, |view, cx| {
6513 view.select_display_ranges(
6514 &[
6515 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6516 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6517 ],
6518 cx,
6519 );
6520 view.handle_input(&Input("{".to_string()), cx);
6521 view.handle_input(&Input("{".to_string()), cx);
6522 view.handle_input(&Input("{".to_string()), cx);
6523 assert_eq!(
6524 view.text(cx),
6525 "
6526 {{{}}}
6527 {{{}}}
6528 /
6529
6530 "
6531 .unindent()
6532 );
6533
6534 view.move_right(&MoveRight, cx);
6535 view.handle_input(&Input("}".to_string()), cx);
6536 view.handle_input(&Input("}".to_string()), cx);
6537 view.handle_input(&Input("}".to_string()), cx);
6538 assert_eq!(
6539 view.text(cx),
6540 "
6541 {{{}}}}
6542 {{{}}}}
6543 /
6544
6545 "
6546 .unindent()
6547 );
6548
6549 view.undo(&Undo, cx);
6550 view.handle_input(&Input("/".to_string()), cx);
6551 view.handle_input(&Input("*".to_string()), cx);
6552 assert_eq!(
6553 view.text(cx),
6554 "
6555 /* */
6556 /* */
6557 /
6558
6559 "
6560 .unindent()
6561 );
6562
6563 view.undo(&Undo, cx);
6564 view.select_display_ranges(
6565 &[
6566 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6567 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6568 ],
6569 cx,
6570 );
6571 view.handle_input(&Input("*".to_string()), cx);
6572 assert_eq!(
6573 view.text(cx),
6574 "
6575 a
6576
6577 /*
6578 *
6579 "
6580 .unindent()
6581 );
6582 });
6583 }
6584
6585 #[gpui::test]
6586 async fn test_completion(mut cx: gpui::TestAppContext) {
6587 let settings = cx.read(EditorSettings::test);
6588 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
6589 lsp::ServerCapabilities {
6590 completion_provider: Some(lsp::CompletionOptions {
6591 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
6592 ..Default::default()
6593 }),
6594 ..Default::default()
6595 },
6596 cx.background(),
6597 )
6598 .await;
6599
6600 let text = "
6601 one
6602 two
6603 three
6604 "
6605 .unindent();
6606 let buffer = cx.add_model(|cx| {
6607 Buffer::from_file(
6608 0,
6609 text,
6610 Box::new(FakeFile {
6611 path: Arc::from(Path::new("/the/file")),
6612 }),
6613 cx,
6614 )
6615 .with_language_server(language_server, cx)
6616 });
6617 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6618
6619 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6620
6621 editor.update(&mut cx, |editor, cx| {
6622 editor.select_ranges([3..3], None, cx);
6623 editor.handle_input(&Input(".".to_string()), cx);
6624 });
6625
6626 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
6627 assert_eq!(
6628 params.text_document_position.text_document.uri,
6629 lsp::Url::from_file_path("/the/file").unwrap()
6630 );
6631 assert_eq!(
6632 params.text_document_position.position,
6633 lsp::Position::new(0, 4)
6634 );
6635
6636 fake.respond(
6637 id,
6638 Some(lsp::CompletionResponse::Array(vec![
6639 lsp::CompletionItem {
6640 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6641 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6642 new_text: "first_completion".to_string(),
6643 })),
6644 ..Default::default()
6645 },
6646 lsp::CompletionItem {
6647 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6648 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6649 new_text: "second_completion".to_string(),
6650 })),
6651 ..Default::default()
6652 },
6653 ])),
6654 )
6655 .await;
6656
6657 editor.next_notification(&cx).await;
6658
6659 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
6660 editor.move_down(&MoveDown, cx);
6661 let apply_additional_edits = editor.confirm_completion(cx);
6662 assert_eq!(
6663 editor.text(cx),
6664 "
6665 one.second_completion
6666 two
6667 three
6668 "
6669 .unindent()
6670 );
6671 apply_additional_edits
6672 });
6673 let (id, _) = fake
6674 .receive_request::<lsp::request::ResolveCompletionItem>()
6675 .await;
6676 fake.respond(
6677 id,
6678 lsp::CompletionItem {
6679 additional_text_edits: Some(vec![lsp::TextEdit::new(
6680 lsp::Range::new(lsp::Position::new(2, 5), lsp::Position::new(2, 5)),
6681 "\nadditional edit".to_string(),
6682 )]),
6683 ..Default::default()
6684 },
6685 )
6686 .await;
6687
6688 apply_additional_edits.await.unwrap();
6689 assert_eq!(
6690 editor.read_with(&cx, |editor, cx| editor.text(cx)),
6691 "
6692 one.second_completion
6693 two
6694 three
6695 additional edit
6696 "
6697 .unindent()
6698 );
6699 }
6700
6701 #[gpui::test]
6702 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6703 let settings = cx.read(EditorSettings::test);
6704 let language = Arc::new(Language::new(
6705 LanguageConfig {
6706 line_comment: Some("// ".to_string()),
6707 ..Default::default()
6708 },
6709 Some(tree_sitter_rust::language()),
6710 ));
6711
6712 let text = "
6713 fn a() {
6714 //b();
6715 // c();
6716 // d();
6717 }
6718 "
6719 .unindent();
6720
6721 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6722 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6723 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6724
6725 view.update(&mut cx, |editor, cx| {
6726 // If multiple selections intersect a line, the line is only
6727 // toggled once.
6728 editor.select_display_ranges(
6729 &[
6730 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6731 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6732 ],
6733 cx,
6734 );
6735 editor.toggle_comments(&ToggleComments, cx);
6736 assert_eq!(
6737 editor.text(cx),
6738 "
6739 fn a() {
6740 b();
6741 c();
6742 d();
6743 }
6744 "
6745 .unindent()
6746 );
6747
6748 // The comment prefix is inserted at the same column for every line
6749 // in a selection.
6750 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
6751 editor.toggle_comments(&ToggleComments, cx);
6752 assert_eq!(
6753 editor.text(cx),
6754 "
6755 fn a() {
6756 // b();
6757 // c();
6758 // d();
6759 }
6760 "
6761 .unindent()
6762 );
6763
6764 // If a selection ends at the beginning of a line, that line is not toggled.
6765 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
6766 editor.toggle_comments(&ToggleComments, cx);
6767 assert_eq!(
6768 editor.text(cx),
6769 "
6770 fn a() {
6771 // b();
6772 c();
6773 // d();
6774 }
6775 "
6776 .unindent()
6777 );
6778 });
6779 }
6780
6781 #[gpui::test]
6782 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6783 let settings = EditorSettings::test(cx);
6784 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6785 let multibuffer = cx.add_model(|cx| {
6786 let mut multibuffer = MultiBuffer::new(0);
6787 multibuffer.push_excerpt(
6788 ExcerptProperties {
6789 buffer: &buffer,
6790 range: Point::new(0, 0)..Point::new(0, 4),
6791 },
6792 cx,
6793 );
6794 multibuffer.push_excerpt(
6795 ExcerptProperties {
6796 buffer: &buffer,
6797 range: Point::new(1, 0)..Point::new(1, 4),
6798 },
6799 cx,
6800 );
6801 multibuffer
6802 });
6803
6804 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6805
6806 let (_, view) = cx.add_window(Default::default(), |cx| {
6807 build_editor(multibuffer, settings, cx)
6808 });
6809 view.update(cx, |view, cx| {
6810 view.select_display_ranges(
6811 &[
6812 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6813 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6814 ],
6815 cx,
6816 );
6817
6818 view.handle_input(&Input("X".to_string()), cx);
6819 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6820 assert_eq!(
6821 view.selected_display_ranges(cx),
6822 &[
6823 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6824 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6825 ]
6826 )
6827 });
6828 }
6829
6830 #[gpui::test]
6831 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6832 let settings = EditorSettings::test(cx);
6833 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6834 let multibuffer = cx.add_model(|cx| {
6835 let mut multibuffer = MultiBuffer::new(0);
6836 multibuffer.push_excerpt(
6837 ExcerptProperties {
6838 buffer: &buffer,
6839 range: Point::new(0, 0)..Point::new(1, 4),
6840 },
6841 cx,
6842 );
6843 multibuffer.push_excerpt(
6844 ExcerptProperties {
6845 buffer: &buffer,
6846 range: Point::new(1, 0)..Point::new(2, 4),
6847 },
6848 cx,
6849 );
6850 multibuffer
6851 });
6852
6853 assert_eq!(
6854 multibuffer.read(cx).read(cx).text(),
6855 "aaaa\nbbbb\nbbbb\ncccc"
6856 );
6857
6858 let (_, view) = cx.add_window(Default::default(), |cx| {
6859 build_editor(multibuffer, settings, cx)
6860 });
6861 view.update(cx, |view, cx| {
6862 view.select_display_ranges(
6863 &[
6864 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6865 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6866 ],
6867 cx,
6868 );
6869
6870 view.handle_input(&Input("X".to_string()), cx);
6871 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6872 assert_eq!(
6873 view.selected_display_ranges(cx),
6874 &[
6875 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6876 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6877 ]
6878 );
6879
6880 view.newline(&Newline, cx);
6881 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
6882 assert_eq!(
6883 view.selected_display_ranges(cx),
6884 &[
6885 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6886 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6887 ]
6888 );
6889 });
6890 }
6891
6892 #[gpui::test]
6893 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
6894 let settings = EditorSettings::test(cx);
6895 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6896 let mut excerpt1_id = None;
6897 let multibuffer = cx.add_model(|cx| {
6898 let mut multibuffer = MultiBuffer::new(0);
6899 excerpt1_id = Some(multibuffer.push_excerpt(
6900 ExcerptProperties {
6901 buffer: &buffer,
6902 range: Point::new(0, 0)..Point::new(1, 4),
6903 },
6904 cx,
6905 ));
6906 multibuffer.push_excerpt(
6907 ExcerptProperties {
6908 buffer: &buffer,
6909 range: Point::new(1, 0)..Point::new(2, 4),
6910 },
6911 cx,
6912 );
6913 multibuffer
6914 });
6915 assert_eq!(
6916 multibuffer.read(cx).read(cx).text(),
6917 "aaaa\nbbbb\nbbbb\ncccc"
6918 );
6919 let (_, editor) = cx.add_window(Default::default(), |cx| {
6920 let mut editor = build_editor(multibuffer.clone(), settings, cx);
6921 editor.select_display_ranges(
6922 &[
6923 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6924 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6925 ],
6926 cx,
6927 );
6928 editor
6929 });
6930
6931 // Refreshing selections is a no-op when excerpts haven't changed.
6932 editor.update(cx, |editor, cx| {
6933 editor.refresh_selections(cx);
6934 assert_eq!(
6935 editor.selected_display_ranges(cx),
6936 [
6937 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6938 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6939 ]
6940 );
6941 });
6942
6943 multibuffer.update(cx, |multibuffer, cx| {
6944 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
6945 });
6946 editor.update(cx, |editor, cx| {
6947 // Removing an excerpt causes the first selection to become degenerate.
6948 assert_eq!(
6949 editor.selected_display_ranges(cx),
6950 [
6951 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6952 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6953 ]
6954 );
6955
6956 // Refreshing selections will relocate the first selection to the original buffer
6957 // location.
6958 editor.refresh_selections(cx);
6959 assert_eq!(
6960 editor.selected_display_ranges(cx),
6961 [
6962 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6963 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
6964 ]
6965 );
6966 });
6967 }
6968
6969 #[gpui::test]
6970 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6971 let settings = cx.read(EditorSettings::test);
6972 let language = Arc::new(Language::new(
6973 LanguageConfig {
6974 brackets: vec![
6975 BracketPair {
6976 start: "{".to_string(),
6977 end: "}".to_string(),
6978 close: true,
6979 newline: true,
6980 },
6981 BracketPair {
6982 start: "/* ".to_string(),
6983 end: " */".to_string(),
6984 close: true,
6985 newline: true,
6986 },
6987 ],
6988 ..Default::default()
6989 },
6990 Some(tree_sitter_rust::language()),
6991 ));
6992
6993 let text = concat!(
6994 "{ }\n", // Suppress rustfmt
6995 " x\n", //
6996 " /* */\n", //
6997 "x\n", //
6998 "{{} }\n", //
6999 );
7000
7001 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7002 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7003 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7004 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7005 .await;
7006
7007 view.update(&mut cx, |view, cx| {
7008 view.select_display_ranges(
7009 &[
7010 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7011 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7012 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7013 ],
7014 cx,
7015 );
7016 view.newline(&Newline, cx);
7017
7018 assert_eq!(
7019 view.buffer().read(cx).read(cx).text(),
7020 concat!(
7021 "{ \n", // Suppress rustfmt
7022 "\n", //
7023 "}\n", //
7024 " x\n", //
7025 " /* \n", //
7026 " \n", //
7027 " */\n", //
7028 "x\n", //
7029 "{{} \n", //
7030 "}\n", //
7031 )
7032 );
7033 });
7034 }
7035
7036 #[gpui::test]
7037 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7038 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7039 let settings = EditorSettings::test(&cx);
7040 let (_, editor) = cx.add_window(Default::default(), |cx| {
7041 build_editor(buffer.clone(), settings, cx)
7042 });
7043
7044 editor.update(cx, |editor, cx| {
7045 struct Type1;
7046 struct Type2;
7047
7048 let buffer = buffer.read(cx).snapshot(cx);
7049
7050 let anchor_range = |range: Range<Point>| {
7051 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7052 };
7053
7054 editor.highlight_ranges::<Type1>(
7055 vec![
7056 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7057 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7058 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7059 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7060 ],
7061 Color::red(),
7062 cx,
7063 );
7064 editor.highlight_ranges::<Type2>(
7065 vec![
7066 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7067 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7068 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7069 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7070 ],
7071 Color::green(),
7072 cx,
7073 );
7074
7075 let snapshot = editor.snapshot(cx);
7076 assert_eq!(
7077 editor.highlighted_ranges_in_range(
7078 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7079 &snapshot,
7080 ),
7081 &[
7082 (
7083 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7084 Color::red(),
7085 ),
7086 (
7087 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7088 Color::red(),
7089 ),
7090 (
7091 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7092 Color::green(),
7093 ),
7094 (
7095 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7096 Color::green(),
7097 ),
7098 ]
7099 );
7100 assert_eq!(
7101 editor.highlighted_ranges_in_range(
7102 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7103 &snapshot,
7104 ),
7105 &[(
7106 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7107 Color::red(),
7108 )]
7109 );
7110 });
7111 }
7112
7113 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
7114 let point = DisplayPoint::new(row as u32, column as u32);
7115 point..point
7116 }
7117
7118 fn build_editor(
7119 buffer: ModelHandle<MultiBuffer>,
7120 settings: EditorSettings,
7121 cx: &mut ViewContext<Editor>,
7122 ) -> Editor {
7123 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
7124 }
7125}
7126
7127trait RangeExt<T> {
7128 fn sorted(&self) -> Range<T>;
7129 fn to_inclusive(&self) -> RangeInclusive<T>;
7130}
7131
7132impl<T: Ord + Clone> RangeExt<T> for Range<T> {
7133 fn sorted(&self) -> Self {
7134 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
7135 }
7136
7137 fn to_inclusive(&self) -> RangeInclusive<T> {
7138 self.start.clone()..=self.end.clone()
7139 }
7140}