1pub mod display_map;
2mod element;
3pub mod movement;
4
5#[cfg(test)]
6mod test;
7
8use buffer::rope::TextDimension;
9use clock::ReplicaId;
10pub use display_map::DisplayPoint;
11use display_map::*;
12pub use element::*;
13use gpui::{
14 action,
15 color::Color,
16 geometry::vector::{vec2f, Vector2F},
17 keymap::Binding,
18 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
19 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
20};
21use language::*;
22use serde::{Deserialize, Serialize};
23use smallvec::SmallVec;
24use smol::Timer;
25use std::{
26 cell::RefCell,
27 cmp::{self, Ordering},
28 collections::HashSet,
29 iter, mem,
30 ops::{Range, RangeInclusive},
31 rc::Rc,
32 sync::Arc,
33 time::Duration,
34};
35use sum_tree::Bias;
36use theme::{EditorStyle, SyntaxTheme};
37use util::post_inc;
38
39const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
40const MAX_LINE_LEN: usize = 1024;
41
42action!(Cancel);
43action!(Backspace);
44action!(Delete);
45action!(Input, String);
46action!(Newline);
47action!(Tab);
48action!(DeleteLine);
49action!(DeleteToPreviousWordBoundary);
50action!(DeleteToNextWordBoundary);
51action!(DeleteToBeginningOfLine);
52action!(DeleteToEndOfLine);
53action!(CutToEndOfLine);
54action!(DuplicateLine);
55action!(MoveLineUp);
56action!(MoveLineDown);
57action!(Cut);
58action!(Copy);
59action!(Paste);
60action!(Undo);
61action!(Redo);
62action!(MoveUp);
63action!(MoveDown);
64action!(MoveLeft);
65action!(MoveRight);
66action!(MoveToPreviousWordBoundary);
67action!(MoveToNextWordBoundary);
68action!(MoveToBeginningOfLine);
69action!(MoveToEndOfLine);
70action!(MoveToBeginning);
71action!(MoveToEnd);
72action!(SelectUp);
73action!(SelectDown);
74action!(SelectLeft);
75action!(SelectRight);
76action!(SelectToPreviousWordBoundary);
77action!(SelectToNextWordBoundary);
78action!(SelectToBeginningOfLine, bool);
79action!(SelectToEndOfLine);
80action!(SelectToBeginning);
81action!(SelectToEnd);
82action!(SelectAll);
83action!(SelectLine);
84action!(SplitSelectionIntoLines);
85action!(AddSelectionAbove);
86action!(AddSelectionBelow);
87action!(SelectLargerSyntaxNode);
88action!(SelectSmallerSyntaxNode);
89action!(MoveToEnclosingBracket);
90action!(ShowNextDiagnostic);
91action!(PageUp);
92action!(PageDown);
93action!(Fold);
94action!(Unfold);
95action!(FoldSelectedRanges);
96action!(Scroll, Vector2F);
97action!(Select, SelectPhase);
98
99pub fn init(cx: &mut MutableAppContext) {
100 cx.add_bindings(vec![
101 Binding::new("escape", Cancel, Some("Editor")),
102 Binding::new("backspace", Backspace, Some("Editor")),
103 Binding::new("ctrl-h", Backspace, Some("Editor")),
104 Binding::new("delete", Delete, Some("Editor")),
105 Binding::new("ctrl-d", Delete, Some("Editor")),
106 Binding::new("enter", Newline, Some("Editor && mode == full")),
107 Binding::new(
108 "alt-enter",
109 Input("\n".into()),
110 Some("Editor && mode == auto_height"),
111 ),
112 Binding::new("tab", Tab, Some("Editor")),
113 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
114 Binding::new(
115 "alt-backspace",
116 DeleteToPreviousWordBoundary,
117 Some("Editor"),
118 ),
119 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
120 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
121 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
122 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
123 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
124 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
125 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
126 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
127 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
128 Binding::new("cmd-x", Cut, Some("Editor")),
129 Binding::new("cmd-c", Copy, Some("Editor")),
130 Binding::new("cmd-v", Paste, Some("Editor")),
131 Binding::new("cmd-z", Undo, Some("Editor")),
132 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
133 Binding::new("up", MoveUp, Some("Editor")),
134 Binding::new("down", MoveDown, Some("Editor")),
135 Binding::new("left", MoveLeft, Some("Editor")),
136 Binding::new("right", MoveRight, Some("Editor")),
137 Binding::new("ctrl-p", MoveUp, Some("Editor")),
138 Binding::new("ctrl-n", MoveDown, Some("Editor")),
139 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
140 Binding::new("ctrl-f", MoveRight, Some("Editor")),
141 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
142 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
143 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
144 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
145 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
146 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
147 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
148 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
149 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
150 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
151 Binding::new("shift-up", SelectUp, Some("Editor")),
152 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
153 Binding::new("shift-down", SelectDown, Some("Editor")),
154 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
155 Binding::new("shift-left", SelectLeft, Some("Editor")),
156 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
157 Binding::new("shift-right", SelectRight, Some("Editor")),
158 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
159 Binding::new(
160 "alt-shift-left",
161 SelectToPreviousWordBoundary,
162 Some("Editor"),
163 ),
164 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
165 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
166 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
167 Binding::new(
168 "cmd-shift-left",
169 SelectToBeginningOfLine(true),
170 Some("Editor"),
171 ),
172 Binding::new(
173 "ctrl-shift-A",
174 SelectToBeginningOfLine(true),
175 Some("Editor"),
176 ),
177 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
178 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
179 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
180 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
181 Binding::new("cmd-a", SelectAll, Some("Editor")),
182 Binding::new("cmd-l", SelectLine, Some("Editor")),
183 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
184 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
185 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
186 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
187 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
188 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
189 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
190 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
191 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
192 Binding::new("ctrl-.", ShowNextDiagnostic, Some("Editor")),
193 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
194 Binding::new("pageup", PageUp, Some("Editor")),
195 Binding::new("pagedown", PageDown, Some("Editor")),
196 Binding::new("alt-cmd-[", Fold, Some("Editor")),
197 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
198 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
199 ]);
200
201 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
202 cx.add_action(Editor::select);
203 cx.add_action(Editor::cancel);
204 cx.add_action(Editor::handle_input);
205 cx.add_action(Editor::newline);
206 cx.add_action(Editor::backspace);
207 cx.add_action(Editor::delete);
208 cx.add_action(Editor::tab);
209 cx.add_action(Editor::delete_line);
210 cx.add_action(Editor::delete_to_previous_word_boundary);
211 cx.add_action(Editor::delete_to_next_word_boundary);
212 cx.add_action(Editor::delete_to_beginning_of_line);
213 cx.add_action(Editor::delete_to_end_of_line);
214 cx.add_action(Editor::cut_to_end_of_line);
215 cx.add_action(Editor::duplicate_line);
216 cx.add_action(Editor::move_line_up);
217 cx.add_action(Editor::move_line_down);
218 cx.add_action(Editor::cut);
219 cx.add_action(Editor::copy);
220 cx.add_action(Editor::paste);
221 cx.add_action(Editor::undo);
222 cx.add_action(Editor::redo);
223 cx.add_action(Editor::move_up);
224 cx.add_action(Editor::move_down);
225 cx.add_action(Editor::move_left);
226 cx.add_action(Editor::move_right);
227 cx.add_action(Editor::move_to_previous_word_boundary);
228 cx.add_action(Editor::move_to_next_word_boundary);
229 cx.add_action(Editor::move_to_beginning_of_line);
230 cx.add_action(Editor::move_to_end_of_line);
231 cx.add_action(Editor::move_to_beginning);
232 cx.add_action(Editor::move_to_end);
233 cx.add_action(Editor::select_up);
234 cx.add_action(Editor::select_down);
235 cx.add_action(Editor::select_left);
236 cx.add_action(Editor::select_right);
237 cx.add_action(Editor::select_to_previous_word_boundary);
238 cx.add_action(Editor::select_to_next_word_boundary);
239 cx.add_action(Editor::select_to_beginning_of_line);
240 cx.add_action(Editor::select_to_end_of_line);
241 cx.add_action(Editor::select_to_beginning);
242 cx.add_action(Editor::select_to_end);
243 cx.add_action(Editor::select_all);
244 cx.add_action(Editor::select_line);
245 cx.add_action(Editor::split_selection_into_lines);
246 cx.add_action(Editor::add_selection_above);
247 cx.add_action(Editor::add_selection_below);
248 cx.add_action(Editor::select_larger_syntax_node);
249 cx.add_action(Editor::select_smaller_syntax_node);
250 cx.add_action(Editor::move_to_enclosing_bracket);
251 cx.add_action(Editor::show_next_diagnostic);
252 cx.add_action(Editor::page_up);
253 cx.add_action(Editor::page_down);
254 cx.add_action(Editor::fold);
255 cx.add_action(Editor::unfold);
256 cx.add_action(Editor::fold_selected_ranges);
257}
258
259trait SelectionExt {
260 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
261 fn spanned_rows(
262 &self,
263 include_end_if_at_line_start: bool,
264 map: &DisplayMapSnapshot,
265 ) -> SpannedRows;
266}
267
268struct SpannedRows {
269 buffer_rows: Range<u32>,
270 display_rows: Range<u32>,
271}
272
273#[derive(Clone, Debug)]
274pub enum SelectPhase {
275 Begin {
276 position: DisplayPoint,
277 add: bool,
278 },
279 Update {
280 position: DisplayPoint,
281 scroll_position: Vector2F,
282 },
283 End,
284}
285
286#[derive(Copy, Clone, PartialEq, Eq)]
287pub enum EditorMode {
288 SingleLine,
289 AutoHeight { max_lines: usize },
290 Full,
291}
292
293#[derive(Clone)]
294pub struct EditorSettings {
295 pub tab_size: usize,
296 pub style: EditorStyle,
297}
298
299pub struct Editor {
300 handle: WeakViewHandle<Self>,
301 buffer: ModelHandle<Buffer>,
302 display_map: ModelHandle<DisplayMap>,
303 selection_set_id: SelectionSetId,
304 pending_selection: Option<Selection<Anchor>>,
305 next_selection_id: usize,
306 add_selections_state: Option<AddSelectionsState>,
307 autoclose_stack: Vec<BracketPairState>,
308 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
309 active_diagnostics: Option<ActiveDiagnosticGroup>,
310 scroll_position: Vector2F,
311 scroll_top_anchor: Anchor,
312 autoscroll_requested: bool,
313 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
314 focused: bool,
315 show_local_cursors: bool,
316 blink_epoch: usize,
317 blinking_paused: bool,
318 mode: EditorMode,
319 placeholder_text: Option<Arc<str>>,
320}
321
322pub struct Snapshot {
323 pub mode: EditorMode,
324 pub display_snapshot: DisplayMapSnapshot,
325 pub placeholder_text: Option<Arc<str>>,
326 is_focused: bool,
327 scroll_position: Vector2F,
328 scroll_top_anchor: Anchor,
329}
330
331struct AddSelectionsState {
332 above: bool,
333 stack: Vec<usize>,
334}
335
336#[derive(Debug)]
337struct BracketPairState {
338 ranges: AnchorRangeSet,
339 pair: BracketPair,
340}
341
342#[derive(Debug)]
343struct ActiveDiagnosticGroup {
344 primary_range: Range<Anchor>,
345 block_ids: HashSet<BlockId>,
346}
347
348#[derive(Serialize, Deserialize)]
349struct ClipboardSelection {
350 len: usize,
351 is_entire_line: bool,
352}
353
354impl Editor {
355 pub fn single_line(
356 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
357 cx: &mut ViewContext<Self>,
358 ) -> Self {
359 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
360 let mut view = Self::for_buffer(buffer, build_settings, cx);
361 view.mode = EditorMode::SingleLine;
362 view
363 }
364
365 pub fn auto_height(
366 max_lines: usize,
367 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
368 cx: &mut ViewContext<Self>,
369 ) -> Self {
370 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
371 let mut view = Self::for_buffer(buffer, build_settings, cx);
372 view.mode = EditorMode::AutoHeight { max_lines };
373 view
374 }
375
376 pub fn for_buffer(
377 buffer: ModelHandle<Buffer>,
378 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
379 cx: &mut ViewContext<Self>,
380 ) -> Self {
381 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
382 }
383
384 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
385 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
386 clone.scroll_position = self.scroll_position;
387 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
388 clone
389 }
390
391 pub fn new(
392 buffer: ModelHandle<Buffer>,
393 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
394 cx: &mut ViewContext<Self>,
395 ) -> Self {
396 let settings = build_settings.borrow_mut()(cx);
397 let display_map = cx.add_model(|cx| {
398 DisplayMap::new(
399 buffer.clone(),
400 settings.tab_size,
401 settings.style.text.font_id,
402 settings.style.text.font_size,
403 None,
404 cx,
405 )
406 });
407 cx.observe(&buffer, Self::on_buffer_changed).detach();
408 cx.subscribe(&buffer, Self::on_buffer_event).detach();
409 cx.observe(&display_map, Self::on_display_map_changed)
410 .detach();
411
412 let mut next_selection_id = 0;
413 let selection_set_id = buffer.update(cx, |buffer, cx| {
414 buffer.add_selection_set(
415 &[Selection {
416 id: post_inc(&mut next_selection_id),
417 start: 0,
418 end: 0,
419 reversed: false,
420 goal: SelectionGoal::None,
421 }],
422 cx,
423 )
424 });
425 Self {
426 handle: cx.handle().downgrade(),
427 buffer,
428 display_map,
429 selection_set_id,
430 pending_selection: None,
431 next_selection_id,
432 add_selections_state: None,
433 autoclose_stack: Default::default(),
434 select_larger_syntax_node_stack: Vec::new(),
435 active_diagnostics: None,
436 build_settings,
437 scroll_position: Vector2F::zero(),
438 scroll_top_anchor: Anchor::min(),
439 autoscroll_requested: false,
440 focused: false,
441 show_local_cursors: false,
442 blink_epoch: 0,
443 blinking_paused: false,
444 mode: EditorMode::Full,
445 placeholder_text: None,
446 }
447 }
448
449 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
450 self.buffer.read(cx).replica_id()
451 }
452
453 pub fn buffer(&self) -> &ModelHandle<Buffer> {
454 &self.buffer
455 }
456
457 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
458 Snapshot {
459 mode: self.mode,
460 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
461 scroll_position: self.scroll_position,
462 scroll_top_anchor: self.scroll_top_anchor.clone(),
463 placeholder_text: self.placeholder_text.clone(),
464 is_focused: self
465 .handle
466 .upgrade(cx)
467 .map_or(false, |handle| handle.is_focused(cx)),
468 }
469 }
470
471 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
472 self.buffer.read(cx).language()
473 }
474
475 pub fn set_placeholder_text(
476 &mut self,
477 placeholder_text: impl Into<Arc<str>>,
478 cx: &mut ViewContext<Self>,
479 ) {
480 self.placeholder_text = Some(placeholder_text.into());
481 cx.notify();
482 }
483
484 fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
485 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
486 let scroll_top_buffer_offset =
487 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
488 self.scroll_top_anchor = self
489 .buffer
490 .read(cx)
491 .anchor_at(scroll_top_buffer_offset, Bias::Right);
492 self.scroll_position = vec2f(
493 scroll_position.x(),
494 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
495 );
496
497 debug_assert_eq!(
498 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
499 scroll_position
500 );
501
502 cx.notify();
503 }
504
505 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
506 if max < self.scroll_position.x() {
507 self.scroll_position.set_x(max);
508 true
509 } else {
510 false
511 }
512 }
513
514 pub fn autoscroll_vertically(
515 &mut self,
516 viewport_height: f32,
517 line_height: f32,
518 cx: &mut ViewContext<Self>,
519 ) -> bool {
520 let visible_lines = viewport_height / line_height;
521 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
522 let mut scroll_position =
523 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
524 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
525 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
526 } else {
527 display_map.max_point().row().saturating_sub(1) as f32
528 };
529 if scroll_position.y() > max_scroll_top {
530 scroll_position.set_y(max_scroll_top);
531 self.set_scroll_position(scroll_position, cx);
532 }
533
534 if self.autoscroll_requested {
535 self.autoscroll_requested = false;
536 } else {
537 return false;
538 }
539
540 let mut selections = self.selections::<Point>(cx).peekable();
541 let first_cursor_top = selections
542 .peek()
543 .unwrap()
544 .head()
545 .to_display_point(&display_map)
546 .row() as f32;
547 let last_cursor_bottom = selections
548 .last()
549 .unwrap()
550 .head()
551 .to_display_point(&display_map)
552 .row() as f32
553 + 1.0;
554
555 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
556 0.
557 } else {
558 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
559 .floor()
560 .min(3.0)
561 };
562 if margin < 0.0 {
563 return false;
564 }
565
566 let target_top = (first_cursor_top - margin).max(0.0);
567 let target_bottom = last_cursor_bottom + margin;
568 let start_row = scroll_position.y();
569 let end_row = start_row + visible_lines;
570
571 if target_top < start_row {
572 scroll_position.set_y(target_top);
573 self.set_scroll_position(scroll_position, cx);
574 } else if target_bottom >= end_row {
575 scroll_position.set_y(target_bottom - visible_lines);
576 self.set_scroll_position(scroll_position, cx);
577 }
578
579 true
580 }
581
582 pub fn autoscroll_horizontally(
583 &mut self,
584 start_row: u32,
585 viewport_width: f32,
586 scroll_width: f32,
587 max_glyph_width: f32,
588 layouts: &[text_layout::Line],
589 cx: &mut ViewContext<Self>,
590 ) -> bool {
591 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
592 let selections = self.selections::<Point>(cx);
593 let mut target_left = std::f32::INFINITY;
594 let mut target_right = 0.0_f32;
595 for selection in selections {
596 let head = selection.head().to_display_point(&display_map);
597 let start_column = head.column().saturating_sub(3);
598 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
599 target_left = target_left
600 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
601 target_right = target_right.max(
602 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
603 + max_glyph_width,
604 );
605 }
606 target_right = target_right.min(scroll_width);
607
608 if target_right - target_left > viewport_width {
609 return false;
610 }
611
612 let scroll_left = self.scroll_position.x() * max_glyph_width;
613 let scroll_right = scroll_left + viewport_width;
614
615 if target_left < scroll_left {
616 self.scroll_position.set_x(target_left / max_glyph_width);
617 true
618 } else if target_right > scroll_right {
619 self.scroll_position
620 .set_x((target_right - viewport_width) / max_glyph_width);
621 true
622 } else {
623 false
624 }
625 }
626
627 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
628 match phase {
629 SelectPhase::Begin { position, add } => self.begin_selection(*position, *add, cx),
630 SelectPhase::Update {
631 position,
632 scroll_position,
633 } => self.update_selection(*position, *scroll_position, cx),
634 SelectPhase::End => self.end_selection(cx),
635 }
636 }
637
638 fn begin_selection(&mut self, position: DisplayPoint, add: bool, cx: &mut ViewContext<Self>) {
639 if !self.focused {
640 cx.focus_self();
641 cx.emit(Event::Activate);
642 }
643
644 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
645 let buffer = self.buffer.read(cx);
646 let cursor = buffer.anchor_before(position.to_point(&display_map));
647 let selection = Selection {
648 id: post_inc(&mut self.next_selection_id),
649 start: cursor.clone(),
650 end: cursor,
651 reversed: false,
652 goal: SelectionGoal::None,
653 };
654
655 if !add {
656 self.update_selections::<usize>(Vec::new(), false, cx);
657 }
658 self.pending_selection = Some(selection);
659
660 cx.notify();
661 }
662
663 fn update_selection(
664 &mut self,
665 position: DisplayPoint,
666 scroll_position: Vector2F,
667 cx: &mut ViewContext<Self>,
668 ) {
669 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
670 if let Some(pending_selection) = self.pending_selection.as_mut() {
671 let buffer = self.buffer.read(cx);
672 let cursor = buffer.anchor_before(position.to_point(&display_map));
673 if cursor.cmp(&pending_selection.tail(), buffer).unwrap() < Ordering::Equal {
674 if !pending_selection.reversed {
675 pending_selection.end = pending_selection.start.clone();
676 pending_selection.reversed = true;
677 }
678 pending_selection.start = cursor;
679 } else {
680 if pending_selection.reversed {
681 pending_selection.start = pending_selection.end.clone();
682 pending_selection.reversed = false;
683 }
684 pending_selection.end = cursor;
685 }
686 } else {
687 log::error!("update_selection dispatched with no pending selection");
688 return;
689 }
690
691 self.set_scroll_position(scroll_position, cx);
692 cx.notify();
693 }
694
695 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
696 if self.pending_selection.is_some() {
697 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
698 self.update_selections(selections, false, cx);
699 }
700 }
701
702 pub fn is_selecting(&self) -> bool {
703 self.pending_selection.is_some()
704 }
705
706 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
707 if self.active_diagnostics.is_some() {
708 self.dismiss_diagnostics(cx);
709 } else if let Some(pending_selection) = self.pending_selection.take() {
710 let buffer = self.buffer.read(cx);
711 let pending_selection = Selection {
712 id: pending_selection.id,
713 start: pending_selection.start.to_point(buffer),
714 end: pending_selection.end.to_point(buffer),
715 reversed: pending_selection.reversed,
716 goal: pending_selection.goal,
717 };
718 if self.selections::<Point>(cx).next().is_none() {
719 self.update_selections(vec![pending_selection], true, cx);
720 }
721 } else {
722 let mut oldest_selection = self.oldest_selection::<usize>(cx);
723 if self.selection_count(cx) == 1 {
724 oldest_selection.start = oldest_selection.head().clone();
725 oldest_selection.end = oldest_selection.head().clone();
726 }
727 self.update_selections(vec![oldest_selection], true, cx);
728 }
729 }
730
731 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
732 where
733 I: IntoIterator<Item = Range<T>>,
734 T: ToOffset,
735 {
736 let buffer = self.buffer.read(cx);
737 let selections = ranges
738 .into_iter()
739 .map(|range| {
740 let mut start = range.start.to_offset(buffer);
741 let mut end = range.end.to_offset(buffer);
742 let reversed = if start > end {
743 mem::swap(&mut start, &mut end);
744 true
745 } else {
746 false
747 };
748 Selection {
749 id: post_inc(&mut self.next_selection_id),
750 start: start,
751 end: end,
752 reversed,
753 goal: SelectionGoal::None,
754 }
755 })
756 .collect();
757 self.update_selections(selections, autoscroll, cx);
758 }
759
760 #[cfg(test)]
761 fn select_display_ranges<'a, T>(
762 &mut self,
763 ranges: T,
764 cx: &mut ViewContext<Self>,
765 ) -> anyhow::Result<()>
766 where
767 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
768 {
769 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
770 let selections = ranges
771 .into_iter()
772 .map(|range| {
773 let mut start = range.start;
774 let mut end = range.end;
775 let reversed = if start > end {
776 mem::swap(&mut start, &mut end);
777 true
778 } else {
779 false
780 };
781 Selection {
782 id: post_inc(&mut self.next_selection_id),
783 start: start.to_point(&display_map),
784 end: end.to_point(&display_map),
785 reversed,
786 goal: SelectionGoal::None,
787 }
788 })
789 .collect();
790 self.update_selections(selections, false, cx);
791 Ok(())
792 }
793
794 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
795 let text = action.0.as_ref();
796 if !self.skip_autoclose_end(text, cx) {
797 self.start_transaction(cx);
798 self.insert(text, cx);
799 self.autoclose_pairs(cx);
800 self.end_transaction(cx);
801 }
802 }
803
804 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
805 self.start_transaction(cx);
806 let mut old_selections = SmallVec::<[_; 32]>::new();
807 {
808 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
809 let buffer = self.buffer.read(cx);
810 for selection in selections.iter() {
811 let start_point = selection.start;
812 let indent = buffer
813 .indent_column_for_line(start_point.row)
814 .min(start_point.column);
815 let start = selection.start.to_offset(buffer);
816 let end = selection.end.to_offset(buffer);
817
818 let mut insert_extra_newline = false;
819 if let Some(language) = buffer.language() {
820 let leading_whitespace_len = buffer
821 .reversed_chars_at(start)
822 .take_while(|c| c.is_whitespace() && *c != '\n')
823 .map(|c| c.len_utf8())
824 .sum::<usize>();
825
826 let trailing_whitespace_len = buffer
827 .chars_at(end)
828 .take_while(|c| c.is_whitespace() && *c != '\n')
829 .map(|c| c.len_utf8())
830 .sum::<usize>();
831
832 insert_extra_newline = language.brackets().iter().any(|pair| {
833 let pair_start = pair.start.trim_end();
834 let pair_end = pair.end.trim_start();
835
836 pair.newline
837 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
838 && buffer.contains_str_at(
839 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
840 pair_start,
841 )
842 });
843 }
844
845 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
846 }
847 }
848
849 let mut new_selections = Vec::with_capacity(old_selections.len());
850 self.buffer.update(cx, |buffer, cx| {
851 let mut delta = 0_isize;
852 let mut pending_edit: Option<PendingEdit> = None;
853 for (_, range, indent, insert_extra_newline) in &old_selections {
854 if pending_edit.as_ref().map_or(false, |pending| {
855 pending.indent != *indent
856 || pending.insert_extra_newline != *insert_extra_newline
857 }) {
858 let pending = pending_edit.take().unwrap();
859 let mut new_text = String::with_capacity(1 + pending.indent as usize);
860 new_text.push('\n');
861 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
862 if pending.insert_extra_newline {
863 new_text = new_text.repeat(2);
864 }
865 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
866 delta += pending.delta;
867 }
868
869 let start = (range.start as isize + delta) as usize;
870 let end = (range.end as isize + delta) as usize;
871 let mut text_len = *indent as usize + 1;
872 if *insert_extra_newline {
873 text_len *= 2;
874 }
875
876 let pending = pending_edit.get_or_insert_with(Default::default);
877 pending.delta += text_len as isize - (end - start) as isize;
878 pending.indent = *indent;
879 pending.insert_extra_newline = *insert_extra_newline;
880 pending.ranges.push(start..end);
881 }
882
883 let pending = pending_edit.unwrap();
884 let mut new_text = String::with_capacity(1 + pending.indent as usize);
885 new_text.push('\n');
886 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
887 if pending.insert_extra_newline {
888 new_text = new_text.repeat(2);
889 }
890 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
891
892 let mut delta = 0_isize;
893 new_selections.extend(old_selections.into_iter().map(
894 |(id, range, indent, insert_extra_newline)| {
895 let start = (range.start as isize + delta) as usize;
896 let end = (range.end as isize + delta) as usize;
897 let text_before_cursor_len = indent as usize + 1;
898 let cursor = start + text_before_cursor_len;
899 let text_len = if insert_extra_newline {
900 text_before_cursor_len * 2
901 } else {
902 text_before_cursor_len
903 };
904 delta += text_len as isize - (end - start) as isize;
905 Selection {
906 id,
907 start: cursor,
908 end: cursor,
909 reversed: false,
910 goal: SelectionGoal::None,
911 }
912 },
913 ))
914 });
915
916 self.update_selections(new_selections, true, cx);
917 self.end_transaction(cx);
918
919 #[derive(Default)]
920 struct PendingEdit {
921 indent: u32,
922 insert_extra_newline: bool,
923 delta: isize,
924 ranges: SmallVec<[Range<usize>; 32]>,
925 }
926 }
927
928 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
929 self.start_transaction(cx);
930 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
931 let mut new_selections = Vec::new();
932 self.buffer.update(cx, |buffer, cx| {
933 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
934 buffer.edit_with_autoindent(edit_ranges, text, cx);
935 let text_len = text.len() as isize;
936 let mut delta = 0_isize;
937 new_selections = old_selections
938 .into_iter()
939 .map(|selection| {
940 let start = selection.start as isize;
941 let end = selection.end as isize;
942 let cursor = (start + delta + text_len) as usize;
943 let deleted_count = end - start;
944 delta += text_len - deleted_count;
945 Selection {
946 id: selection.id,
947 start: cursor,
948 end: cursor,
949 reversed: false,
950 goal: SelectionGoal::None,
951 }
952 })
953 .collect();
954 });
955
956 self.update_selections(new_selections, true, cx);
957 self.end_transaction(cx);
958 }
959
960 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
961 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
962 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
963 let autoclose_pair = buffer.language().and_then(|language| {
964 let first_selection_start = selections.first().unwrap().start;
965 let pair = language.brackets().iter().find(|pair| {
966 buffer.contains_str_at(
967 first_selection_start.saturating_sub(pair.start.len()),
968 &pair.start,
969 )
970 });
971 pair.and_then(|pair| {
972 let should_autoclose = selections[1..].iter().all(|selection| {
973 buffer.contains_str_at(
974 selection.start.saturating_sub(pair.start.len()),
975 &pair.start,
976 )
977 });
978
979 if should_autoclose {
980 Some(pair.clone())
981 } else {
982 None
983 }
984 })
985 });
986
987 autoclose_pair.and_then(|pair| {
988 let selection_ranges = selections
989 .iter()
990 .map(|selection| {
991 let start = selection.start.to_offset(&*buffer);
992 start..start
993 })
994 .collect::<SmallVec<[_; 32]>>();
995
996 buffer.edit(selection_ranges, &pair.end, cx);
997
998 if pair.end.len() == 1 {
999 let mut delta = 0;
1000 Some(BracketPairState {
1001 ranges: buffer.anchor_range_set(selections.iter().map(move |selection| {
1002 let offset = selection.start + delta;
1003 delta += 1;
1004 (offset, Bias::Left)..(offset, Bias::Right)
1005 })),
1006 pair,
1007 })
1008 } else {
1009 None
1010 }
1011 })
1012 });
1013 self.autoclose_stack.extend(new_autoclose_pair_state);
1014 }
1015
1016 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1017 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1018 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1019 autoclose_pair_state
1020 } else {
1021 return false;
1022 };
1023 if text != autoclose_pair_state.pair.end {
1024 return false;
1025 }
1026
1027 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1028
1029 let buffer = self.buffer.read(cx);
1030 if old_selections
1031 .iter()
1032 .zip(autoclose_pair_state.ranges.ranges::<usize, _>(buffer))
1033 .all(|(selection, autoclose_range)| {
1034 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1035 selection.is_empty() && selection.start == autoclose_range_end
1036 })
1037 {
1038 let new_selections = old_selections
1039 .into_iter()
1040 .map(|selection| {
1041 let cursor = selection.start + 1;
1042 Selection {
1043 id: selection.id,
1044 start: cursor,
1045 end: cursor,
1046 reversed: false,
1047 goal: SelectionGoal::None,
1048 }
1049 })
1050 .collect();
1051 self.autoclose_stack.pop();
1052 self.update_selections(new_selections, true, cx);
1053 true
1054 } else {
1055 false
1056 }
1057 }
1058
1059 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1060 self.start_transaction(cx);
1061 self.select_all(&SelectAll, cx);
1062 self.insert("", cx);
1063 self.end_transaction(cx);
1064 }
1065
1066 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1067 self.start_transaction(cx);
1068 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1069 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1070 for selection in &mut selections {
1071 if selection.is_empty() {
1072 let head = selection.head().to_display_point(&display_map);
1073 let cursor = movement::left(&display_map, head)
1074 .unwrap()
1075 .to_point(&display_map);
1076 selection.set_head(cursor);
1077 selection.goal = SelectionGoal::None;
1078 }
1079 }
1080 self.update_selections(selections, true, cx);
1081 self.insert("", cx);
1082 self.end_transaction(cx);
1083 }
1084
1085 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1086 self.start_transaction(cx);
1087 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1088 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1089 for selection in &mut selections {
1090 if selection.is_empty() {
1091 let head = selection.head().to_display_point(&display_map);
1092 let cursor = movement::right(&display_map, head)
1093 .unwrap()
1094 .to_point(&display_map);
1095 selection.set_head(cursor);
1096 selection.goal = SelectionGoal::None;
1097 }
1098 }
1099 self.update_selections(selections, true, cx);
1100 self.insert(&"", cx);
1101 self.end_transaction(cx);
1102 }
1103
1104 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1105 self.start_transaction(cx);
1106 let tab_size = self.build_settings.borrow()(cx).tab_size;
1107 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1108 self.buffer.update(cx, |buffer, cx| {
1109 let mut last_indented_row = None;
1110 for selection in &mut selections {
1111 if selection.is_empty() {
1112 let char_column = buffer
1113 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1114 .count();
1115 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1116 buffer.edit(
1117 [selection.start..selection.start],
1118 " ".repeat(chars_to_next_tab_stop),
1119 cx,
1120 );
1121 selection.start.column += chars_to_next_tab_stop as u32;
1122 selection.end = selection.start;
1123 } else {
1124 for row in selection.start.row..=selection.end.row {
1125 if last_indented_row != Some(row) {
1126 let char_column = buffer.indent_column_for_line(row) as usize;
1127 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1128 let row_start = Point::new(row, 0);
1129 buffer.edit(
1130 [row_start..row_start],
1131 " ".repeat(chars_to_next_tab_stop),
1132 cx,
1133 );
1134 last_indented_row = Some(row);
1135 }
1136 }
1137 }
1138 }
1139 });
1140
1141 self.update_selections(selections, true, cx);
1142 self.end_transaction(cx);
1143 }
1144
1145 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1146 self.start_transaction(cx);
1147
1148 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1149 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1150 let buffer = self.buffer.read(cx);
1151
1152 let mut row_delta = 0;
1153 let mut new_cursors = Vec::new();
1154 let mut edit_ranges = Vec::new();
1155 let mut selections = selections.iter().peekable();
1156 while let Some(selection) = selections.next() {
1157 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1158 let goal_display_column = selection.head().to_display_point(&display_map).column();
1159
1160 // Accumulate contiguous regions of rows that we want to delete.
1161 while let Some(next_selection) = selections.peek() {
1162 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1163 if next_rows.start <= rows.end {
1164 rows.end = next_rows.end;
1165 selections.next().unwrap();
1166 } else {
1167 break;
1168 }
1169 }
1170
1171 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1172 let edit_end;
1173 let cursor_buffer_row;
1174 if buffer.max_point().row >= rows.end {
1175 // If there's a line after the range, delete the \n from the end of the row range
1176 // and position the cursor on the next line.
1177 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1178 cursor_buffer_row = rows.start;
1179 } else {
1180 // If there isn't a line after the range, delete the \n from the line before the
1181 // start of the row range and position the cursor there.
1182 edit_start = edit_start.saturating_sub(1);
1183 edit_end = buffer.len();
1184 cursor_buffer_row = rows.start.saturating_sub(1);
1185 }
1186
1187 let mut cursor =
1188 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1189 *cursor.column_mut() =
1190 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1191 row_delta += rows.len() as u32;
1192
1193 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1194 edit_ranges.push(edit_start..edit_end);
1195 }
1196
1197 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1198 let new_selections = new_cursors
1199 .into_iter()
1200 .map(|(id, cursor)| Selection {
1201 id,
1202 start: cursor,
1203 end: cursor,
1204 reversed: false,
1205 goal: SelectionGoal::None,
1206 })
1207 .collect();
1208 self.buffer
1209 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1210 self.update_selections(new_selections, true, cx);
1211 self.end_transaction(cx);
1212 }
1213
1214 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1215 self.start_transaction(cx);
1216
1217 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1218 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1219 let buffer = self.buffer.read(cx);
1220
1221 let mut edits = Vec::new();
1222 let mut selections_iter = selections.iter().peekable();
1223 while let Some(selection) = selections_iter.next() {
1224 // Avoid duplicating the same lines twice.
1225 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1226
1227 while let Some(next_selection) = selections_iter.peek() {
1228 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1229 if next_rows.start <= rows.end - 1 {
1230 rows.end = next_rows.end;
1231 selections_iter.next().unwrap();
1232 } else {
1233 break;
1234 }
1235 }
1236
1237 // Copy the text from the selected row region and splice it at the start of the region.
1238 let start = Point::new(rows.start, 0);
1239 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1240 let text = buffer
1241 .text_for_range(start..end)
1242 .chain(Some("\n"))
1243 .collect::<String>();
1244 edits.push((start, text, rows.len() as u32));
1245 }
1246
1247 let mut edits_iter = edits.iter().peekable();
1248 let mut row_delta = 0;
1249 for selection in selections.iter_mut() {
1250 while let Some((point, _, line_count)) = edits_iter.peek() {
1251 if *point <= selection.start {
1252 row_delta += line_count;
1253 edits_iter.next();
1254 } else {
1255 break;
1256 }
1257 }
1258 selection.start.row += row_delta;
1259 selection.end.row += row_delta;
1260 }
1261
1262 self.buffer.update(cx, |buffer, cx| {
1263 for (point, text, _) in edits.into_iter().rev() {
1264 buffer.edit(Some(point..point), text, cx);
1265 }
1266 });
1267
1268 self.update_selections(selections, true, cx);
1269 self.end_transaction(cx);
1270 }
1271
1272 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1273 self.start_transaction(cx);
1274
1275 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1276 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1277 let buffer = self.buffer.read(cx);
1278
1279 let mut edits = Vec::new();
1280 let mut new_selection_ranges = Vec::new();
1281 let mut old_folds = Vec::new();
1282 let mut new_folds = Vec::new();
1283
1284 let mut selections = selections.iter().peekable();
1285 let mut contiguous_selections = Vec::new();
1286 while let Some(selection) = selections.next() {
1287 // Accumulate contiguous regions of rows that we want to move.
1288 contiguous_selections.push(selection.point_range(buffer));
1289 let SpannedRows {
1290 mut buffer_rows,
1291 mut display_rows,
1292 } = selection.spanned_rows(false, &display_map);
1293
1294 while let Some(next_selection) = selections.peek() {
1295 let SpannedRows {
1296 buffer_rows: next_buffer_rows,
1297 display_rows: next_display_rows,
1298 } = next_selection.spanned_rows(false, &display_map);
1299 if next_buffer_rows.start <= buffer_rows.end {
1300 buffer_rows.end = next_buffer_rows.end;
1301 display_rows.end = next_display_rows.end;
1302 contiguous_selections.push(next_selection.point_range(buffer));
1303 selections.next().unwrap();
1304 } else {
1305 break;
1306 }
1307 }
1308
1309 // Cut the text from the selected rows and paste it at the start of the previous line.
1310 if display_rows.start != 0 {
1311 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1312 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1313 .to_offset(buffer);
1314
1315 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1316 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1317 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1318
1319 let mut text = String::new();
1320 text.extend(buffer.text_for_range(start..end));
1321 text.push('\n');
1322 edits.push((
1323 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1324 text,
1325 ));
1326 edits.push((start - 1..end, String::new()));
1327
1328 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1329
1330 // Move selections up.
1331 for range in &mut contiguous_selections {
1332 range.start.row -= row_delta;
1333 range.end.row -= row_delta;
1334 }
1335
1336 // Move folds up.
1337 old_folds.push(start..end);
1338 for fold in display_map.folds_in_range(start..end) {
1339 let mut start = fold.start.to_point(buffer);
1340 let mut end = fold.end.to_point(buffer);
1341 start.row -= row_delta;
1342 end.row -= row_delta;
1343 new_folds.push(start..end);
1344 }
1345 }
1346
1347 new_selection_ranges.extend(contiguous_selections.drain(..));
1348 }
1349
1350 self.unfold_ranges(old_folds, cx);
1351 self.buffer.update(cx, |buffer, cx| {
1352 for (range, text) in edits.into_iter().rev() {
1353 buffer.edit(Some(range), text, cx);
1354 }
1355 });
1356 self.fold_ranges(new_folds, cx);
1357 self.select_ranges(new_selection_ranges, true, cx);
1358
1359 self.end_transaction(cx);
1360 }
1361
1362 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1363 self.start_transaction(cx);
1364
1365 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1367 let buffer = self.buffer.read(cx);
1368
1369 let mut edits = Vec::new();
1370 let mut new_selection_ranges = Vec::new();
1371 let mut old_folds = Vec::new();
1372 let mut new_folds = Vec::new();
1373
1374 let mut selections = selections.iter().peekable();
1375 let mut contiguous_selections = Vec::new();
1376 while let Some(selection) = selections.next() {
1377 // Accumulate contiguous regions of rows that we want to move.
1378 contiguous_selections.push(selection.point_range(buffer));
1379 let SpannedRows {
1380 mut buffer_rows,
1381 mut display_rows,
1382 } = selection.spanned_rows(false, &display_map);
1383 while let Some(next_selection) = selections.peek() {
1384 let SpannedRows {
1385 buffer_rows: next_buffer_rows,
1386 display_rows: next_display_rows,
1387 } = next_selection.spanned_rows(false, &display_map);
1388 if next_buffer_rows.start <= buffer_rows.end {
1389 buffer_rows.end = next_buffer_rows.end;
1390 display_rows.end = next_display_rows.end;
1391 contiguous_selections.push(next_selection.point_range(buffer));
1392 selections.next().unwrap();
1393 } else {
1394 break;
1395 }
1396 }
1397
1398 // Cut the text from the selected rows and paste it at the end of the next line.
1399 if display_rows.end <= display_map.max_point().row() {
1400 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1401 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1402 .to_offset(buffer);
1403
1404 let next_row_display_end =
1405 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1406 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1407 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1408
1409 let mut text = String::new();
1410 text.push('\n');
1411 text.extend(buffer.text_for_range(start..end));
1412 edits.push((start..end + 1, String::new()));
1413 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1414
1415 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1416
1417 // Move selections down.
1418 for range in &mut contiguous_selections {
1419 range.start.row += row_delta;
1420 range.end.row += row_delta;
1421 }
1422
1423 // Move folds down.
1424 old_folds.push(start..end);
1425 for fold in display_map.folds_in_range(start..end) {
1426 let mut start = fold.start.to_point(buffer);
1427 let mut end = fold.end.to_point(buffer);
1428 start.row += row_delta;
1429 end.row += row_delta;
1430 new_folds.push(start..end);
1431 }
1432 }
1433
1434 new_selection_ranges.extend(contiguous_selections.drain(..));
1435 }
1436
1437 self.unfold_ranges(old_folds, cx);
1438 self.buffer.update(cx, |buffer, cx| {
1439 for (range, text) in edits.into_iter().rev() {
1440 buffer.edit(Some(range), text, cx);
1441 }
1442 });
1443 self.fold_ranges(new_folds, cx);
1444 self.select_ranges(new_selection_ranges, true, cx);
1445
1446 self.end_transaction(cx);
1447 }
1448
1449 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1450 self.start_transaction(cx);
1451 let mut text = String::new();
1452 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1453 let mut clipboard_selections = Vec::with_capacity(selections.len());
1454 {
1455 let buffer = self.buffer.read(cx);
1456 let max_point = buffer.max_point();
1457 for selection in &mut selections {
1458 let is_entire_line = selection.is_empty();
1459 if is_entire_line {
1460 selection.start = Point::new(selection.start.row, 0);
1461 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1462 }
1463 let mut len = 0;
1464 for chunk in buffer.text_for_range(selection.start..selection.end) {
1465 text.push_str(chunk);
1466 len += chunk.len();
1467 }
1468 clipboard_selections.push(ClipboardSelection {
1469 len,
1470 is_entire_line,
1471 });
1472 }
1473 }
1474 self.update_selections(selections, true, cx);
1475 self.insert("", cx);
1476 self.end_transaction(cx);
1477
1478 cx.as_mut()
1479 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1480 }
1481
1482 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1483 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1484 let buffer = self.buffer.read(cx);
1485 let max_point = buffer.max_point();
1486 let mut text = String::new();
1487 let mut clipboard_selections = Vec::with_capacity(selections.len());
1488 for selection in selections.iter() {
1489 let mut start = selection.start;
1490 let mut end = selection.end;
1491 let is_entire_line = selection.is_empty();
1492 if is_entire_line {
1493 start = Point::new(start.row, 0);
1494 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1495 }
1496 let mut len = 0;
1497 for chunk in buffer.text_for_range(start..end) {
1498 text.push_str(chunk);
1499 len += chunk.len();
1500 }
1501 clipboard_selections.push(ClipboardSelection {
1502 len,
1503 is_entire_line,
1504 });
1505 }
1506
1507 cx.as_mut()
1508 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1509 }
1510
1511 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1512 if let Some(item) = cx.as_mut().read_from_clipboard() {
1513 let clipboard_text = item.text();
1514 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1515 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1516 let all_selections_were_entire_line =
1517 clipboard_selections.iter().all(|s| s.is_entire_line);
1518 if clipboard_selections.len() != selections.len() {
1519 clipboard_selections.clear();
1520 }
1521
1522 let mut delta = 0_isize;
1523 let mut start_offset = 0;
1524 for (i, selection) in selections.iter_mut().enumerate() {
1525 let to_insert;
1526 let entire_line;
1527 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1528 let end_offset = start_offset + clipboard_selection.len;
1529 to_insert = &clipboard_text[start_offset..end_offset];
1530 entire_line = clipboard_selection.is_entire_line;
1531 start_offset = end_offset
1532 } else {
1533 to_insert = clipboard_text.as_str();
1534 entire_line = all_selections_were_entire_line;
1535 }
1536
1537 selection.start = (selection.start as isize + delta) as usize;
1538 selection.end = (selection.end as isize + delta) as usize;
1539
1540 self.buffer.update(cx, |buffer, cx| {
1541 // If the corresponding selection was empty when this slice of the
1542 // clipboard text was written, then the entire line containing the
1543 // selection was copied. If this selection is also currently empty,
1544 // then paste the line before the current line of the buffer.
1545 let range = if selection.is_empty() && entire_line {
1546 let column = selection.start.to_point(&*buffer).column as usize;
1547 let line_start = selection.start - column;
1548 line_start..line_start
1549 } else {
1550 selection.start..selection.end
1551 };
1552
1553 delta += to_insert.len() as isize - range.len() as isize;
1554 buffer.edit([range], to_insert, cx);
1555 selection.start += to_insert.len();
1556 selection.end = selection.start;
1557 });
1558 }
1559 self.update_selections(selections, true, cx);
1560 } else {
1561 self.insert(clipboard_text, cx);
1562 }
1563 }
1564 }
1565
1566 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1567 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1568 self.request_autoscroll(cx);
1569 }
1570
1571 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1572 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1573 self.request_autoscroll(cx);
1574 }
1575
1576 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1577 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1578 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1579 for selection in &mut selections {
1580 let start = selection.start.to_display_point(&display_map);
1581 let end = selection.end.to_display_point(&display_map);
1582
1583 if start != end {
1584 selection.end = selection.start.clone();
1585 } else {
1586 let cursor = movement::left(&display_map, start)
1587 .unwrap()
1588 .to_point(&display_map);
1589 selection.start = cursor.clone();
1590 selection.end = cursor;
1591 }
1592 selection.reversed = false;
1593 selection.goal = SelectionGoal::None;
1594 }
1595 self.update_selections(selections, true, cx);
1596 }
1597
1598 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1599 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1600 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1601 for selection in &mut selections {
1602 let head = selection.head().to_display_point(&display_map);
1603 let cursor = movement::left(&display_map, head)
1604 .unwrap()
1605 .to_point(&display_map);
1606 selection.set_head(cursor);
1607 selection.goal = SelectionGoal::None;
1608 }
1609 self.update_selections(selections, true, cx);
1610 }
1611
1612 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1613 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1614 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1615 for selection in &mut selections {
1616 let start = selection.start.to_display_point(&display_map);
1617 let end = selection.end.to_display_point(&display_map);
1618
1619 if start != end {
1620 selection.start = selection.end.clone();
1621 } else {
1622 let cursor = movement::right(&display_map, end)
1623 .unwrap()
1624 .to_point(&display_map);
1625 selection.start = cursor;
1626 selection.end = cursor;
1627 }
1628 selection.reversed = false;
1629 selection.goal = SelectionGoal::None;
1630 }
1631 self.update_selections(selections, true, cx);
1632 }
1633
1634 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1635 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1636 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1637 for selection in &mut selections {
1638 let head = selection.head().to_display_point(&display_map);
1639 let cursor = movement::right(&display_map, head)
1640 .unwrap()
1641 .to_point(&display_map);
1642 selection.set_head(cursor);
1643 selection.goal = SelectionGoal::None;
1644 }
1645 self.update_selections(selections, true, cx);
1646 }
1647
1648 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1649 if matches!(self.mode, EditorMode::SingleLine) {
1650 cx.propagate_action();
1651 return;
1652 }
1653
1654 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1655 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1656 for selection in &mut selections {
1657 let start = selection.start.to_display_point(&display_map);
1658 let end = selection.end.to_display_point(&display_map);
1659 if start != end {
1660 selection.goal = SelectionGoal::None;
1661 }
1662
1663 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1664 let cursor = start.to_point(&display_map);
1665 selection.start = cursor;
1666 selection.end = cursor;
1667 selection.goal = goal;
1668 selection.reversed = false;
1669 }
1670 self.update_selections(selections, true, cx);
1671 }
1672
1673 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1674 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1675 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1676 for selection in &mut selections {
1677 let head = selection.head().to_display_point(&display_map);
1678 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1679 let cursor = head.to_point(&display_map);
1680 selection.set_head(cursor);
1681 selection.goal = goal;
1682 }
1683 self.update_selections(selections, true, cx);
1684 }
1685
1686 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1687 if matches!(self.mode, EditorMode::SingleLine) {
1688 cx.propagate_action();
1689 return;
1690 }
1691
1692 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1693 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1694 for selection in &mut selections {
1695 let start = selection.start.to_display_point(&display_map);
1696 let end = selection.end.to_display_point(&display_map);
1697 if start != end {
1698 selection.goal = SelectionGoal::None;
1699 }
1700
1701 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1702 let cursor = start.to_point(&display_map);
1703 selection.start = cursor;
1704 selection.end = cursor;
1705 selection.goal = goal;
1706 selection.reversed = false;
1707 }
1708 self.update_selections(selections, true, cx);
1709 }
1710
1711 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1712 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1713 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1714 for selection in &mut selections {
1715 let head = selection.head().to_display_point(&display_map);
1716 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1717 let cursor = head.to_point(&display_map);
1718 selection.set_head(cursor);
1719 selection.goal = goal;
1720 }
1721 self.update_selections(selections, true, cx);
1722 }
1723
1724 pub fn move_to_previous_word_boundary(
1725 &mut self,
1726 _: &MoveToPreviousWordBoundary,
1727 cx: &mut ViewContext<Self>,
1728 ) {
1729 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1730 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1731 for selection in &mut selections {
1732 let head = selection.head().to_display_point(&display_map);
1733 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1734 let cursor = new_head.to_point(&display_map);
1735 selection.start = cursor.clone();
1736 selection.end = cursor;
1737 selection.reversed = false;
1738 selection.goal = SelectionGoal::None;
1739 }
1740 self.update_selections(selections, true, cx);
1741 }
1742
1743 pub fn select_to_previous_word_boundary(
1744 &mut self,
1745 _: &SelectToPreviousWordBoundary,
1746 cx: &mut ViewContext<Self>,
1747 ) {
1748 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1749 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1750 for selection in &mut selections {
1751 let head = selection.head().to_display_point(&display_map);
1752 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1753 let cursor = new_head.to_point(&display_map);
1754 selection.set_head(cursor);
1755 selection.goal = SelectionGoal::None;
1756 }
1757 self.update_selections(selections, true, cx);
1758 }
1759
1760 pub fn delete_to_previous_word_boundary(
1761 &mut self,
1762 _: &DeleteToPreviousWordBoundary,
1763 cx: &mut ViewContext<Self>,
1764 ) {
1765 self.start_transaction(cx);
1766 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1767 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1768 for selection in &mut selections {
1769 if selection.is_empty() {
1770 let head = selection.head().to_display_point(&display_map);
1771 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1772 let cursor = new_head.to_point(&display_map);
1773 selection.set_head(cursor);
1774 selection.goal = SelectionGoal::None;
1775 }
1776 }
1777 self.update_selections(selections, true, cx);
1778 self.insert("", cx);
1779 self.end_transaction(cx);
1780 }
1781
1782 pub fn move_to_next_word_boundary(
1783 &mut self,
1784 _: &MoveToNextWordBoundary,
1785 cx: &mut ViewContext<Self>,
1786 ) {
1787 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1788 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1789 for selection in &mut selections {
1790 let head = selection.head().to_display_point(&display_map);
1791 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1792 let cursor = new_head.to_point(&display_map);
1793 selection.start = cursor;
1794 selection.end = cursor;
1795 selection.reversed = false;
1796 selection.goal = SelectionGoal::None;
1797 }
1798 self.update_selections(selections, true, cx);
1799 }
1800
1801 pub fn select_to_next_word_boundary(
1802 &mut self,
1803 _: &SelectToNextWordBoundary,
1804 cx: &mut ViewContext<Self>,
1805 ) {
1806 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1807 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1808 for selection in &mut selections {
1809 let head = selection.head().to_display_point(&display_map);
1810 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1811 let cursor = new_head.to_point(&display_map);
1812 selection.set_head(cursor);
1813 selection.goal = SelectionGoal::None;
1814 }
1815 self.update_selections(selections, true, cx);
1816 }
1817
1818 pub fn delete_to_next_word_boundary(
1819 &mut self,
1820 _: &DeleteToNextWordBoundary,
1821 cx: &mut ViewContext<Self>,
1822 ) {
1823 self.start_transaction(cx);
1824 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1825 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1826 for selection in &mut selections {
1827 if selection.is_empty() {
1828 let head = selection.head().to_display_point(&display_map);
1829 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1830 let cursor = new_head.to_point(&display_map);
1831 selection.set_head(cursor);
1832 selection.goal = SelectionGoal::None;
1833 }
1834 }
1835 self.update_selections(selections, true, cx);
1836 self.insert("", cx);
1837 self.end_transaction(cx);
1838 }
1839
1840 pub fn move_to_beginning_of_line(
1841 &mut self,
1842 _: &MoveToBeginningOfLine,
1843 cx: &mut ViewContext<Self>,
1844 ) {
1845 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1846 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1847 for selection in &mut selections {
1848 let head = selection.head().to_display_point(&display_map);
1849 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1850 let cursor = new_head.to_point(&display_map);
1851 selection.start = cursor;
1852 selection.end = cursor;
1853 selection.reversed = false;
1854 selection.goal = SelectionGoal::None;
1855 }
1856 self.update_selections(selections, true, cx);
1857 }
1858
1859 pub fn select_to_beginning_of_line(
1860 &mut self,
1861 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1862 cx: &mut ViewContext<Self>,
1863 ) {
1864 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1865 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1866 for selection in &mut selections {
1867 let head = selection.head().to_display_point(&display_map);
1868 let new_head = movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1869 selection.set_head(new_head.to_point(&display_map));
1870 selection.goal = SelectionGoal::None;
1871 }
1872 self.update_selections(selections, true, cx);
1873 }
1874
1875 pub fn delete_to_beginning_of_line(
1876 &mut self,
1877 _: &DeleteToBeginningOfLine,
1878 cx: &mut ViewContext<Self>,
1879 ) {
1880 self.start_transaction(cx);
1881 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1882 self.backspace(&Backspace, cx);
1883 self.end_transaction(cx);
1884 }
1885
1886 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1887 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1888 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1889 {
1890 for selection in &mut selections {
1891 let head = selection.head().to_display_point(&display_map);
1892 let new_head = movement::line_end(&display_map, head).unwrap();
1893 let anchor = new_head.to_point(&display_map);
1894 selection.start = anchor.clone();
1895 selection.end = anchor;
1896 selection.reversed = false;
1897 selection.goal = SelectionGoal::None;
1898 }
1899 }
1900 self.update_selections(selections, true, cx);
1901 }
1902
1903 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1904 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1905 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1906 for selection in &mut selections {
1907 let head = selection.head().to_display_point(&display_map);
1908 let new_head = movement::line_end(&display_map, head).unwrap();
1909 selection.set_head(new_head.to_point(&display_map));
1910 selection.goal = SelectionGoal::None;
1911 }
1912 self.update_selections(selections, true, cx);
1913 }
1914
1915 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
1916 self.start_transaction(cx);
1917 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1918 self.delete(&Delete, cx);
1919 self.end_transaction(cx);
1920 }
1921
1922 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
1923 self.start_transaction(cx);
1924 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1925 self.cut(&Cut, cx);
1926 self.end_transaction(cx);
1927 }
1928
1929 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
1930 let selection = Selection {
1931 id: post_inc(&mut self.next_selection_id),
1932 start: 0,
1933 end: 0,
1934 reversed: false,
1935 goal: SelectionGoal::None,
1936 };
1937 self.update_selections(vec![selection], true, cx);
1938 }
1939
1940 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
1941 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
1942 selection.set_head(Point::zero());
1943 self.update_selections(vec![selection], true, cx);
1944 }
1945
1946 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
1947 let buffer = self.buffer.read(cx);
1948 let cursor = buffer.len();
1949 let selection = Selection {
1950 id: post_inc(&mut self.next_selection_id),
1951 start: cursor,
1952 end: cursor,
1953 reversed: false,
1954 goal: SelectionGoal::None,
1955 };
1956 self.update_selections(vec![selection], true, cx);
1957 }
1958
1959 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
1960 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
1961 selection.set_head(self.buffer.read(cx).len());
1962 self.update_selections(vec![selection], true, cx);
1963 }
1964
1965 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
1966 let selection = Selection {
1967 id: post_inc(&mut self.next_selection_id),
1968 start: 0,
1969 end: self.buffer.read(cx).len(),
1970 reversed: false,
1971 goal: SelectionGoal::None,
1972 };
1973 self.update_selections(vec![selection], false, cx);
1974 }
1975
1976 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
1977 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1978 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1979 let buffer = self.buffer.read(cx);
1980 let max_point = buffer.max_point();
1981 for selection in &mut selections {
1982 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
1983 selection.start = Point::new(rows.start, 0);
1984 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
1985 selection.reversed = false;
1986 }
1987 self.update_selections(selections, true, cx);
1988 }
1989
1990 pub fn split_selection_into_lines(
1991 &mut self,
1992 _: &SplitSelectionIntoLines,
1993 cx: &mut ViewContext<Self>,
1994 ) {
1995 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1996 let buffer = self.buffer.read(cx);
1997
1998 let mut to_unfold = Vec::new();
1999 let mut new_selections = Vec::new();
2000 for selection in selections.iter() {
2001 if selection.start.row != selection.end.row {
2002 new_selections.push(Selection {
2003 id: post_inc(&mut self.next_selection_id),
2004 start: selection.start,
2005 end: selection.start,
2006 reversed: false,
2007 goal: SelectionGoal::None,
2008 });
2009 }
2010 for row in selection.start.row + 1..selection.end.row {
2011 let cursor = Point::new(row, buffer.line_len(row));
2012 new_selections.push(Selection {
2013 id: post_inc(&mut self.next_selection_id),
2014 start: cursor,
2015 end: cursor,
2016 reversed: false,
2017 goal: SelectionGoal::None,
2018 });
2019 }
2020 new_selections.push(Selection {
2021 id: selection.id,
2022 start: selection.end,
2023 end: selection.end,
2024 reversed: false,
2025 goal: SelectionGoal::None,
2026 });
2027 to_unfold.push(selection.start..selection.end);
2028 }
2029 self.unfold_ranges(to_unfold, cx);
2030 self.update_selections(new_selections, true, cx);
2031 }
2032
2033 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2034 self.add_selection(true, cx);
2035 }
2036
2037 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2038 self.add_selection(false, cx);
2039 }
2040
2041 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2042 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2043 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2044 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2045 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2046 let range = oldest_selection.display_range(&display_map).sorted();
2047 let columns = cmp::min(range.start.column(), range.end.column())
2048 ..cmp::max(range.start.column(), range.end.column());
2049
2050 selections.clear();
2051 let mut stack = Vec::new();
2052 for row in range.start.row()..=range.end.row() {
2053 if let Some(selection) = self.build_columnar_selection(
2054 &display_map,
2055 row,
2056 &columns,
2057 oldest_selection.reversed,
2058 ) {
2059 stack.push(selection.id);
2060 selections.push(selection);
2061 }
2062 }
2063
2064 if above {
2065 stack.reverse();
2066 }
2067
2068 AddSelectionsState { above, stack }
2069 });
2070
2071 let last_added_selection = *state.stack.last().unwrap();
2072 let mut new_selections = Vec::new();
2073 if above == state.above {
2074 let end_row = if above {
2075 0
2076 } else {
2077 display_map.max_point().row()
2078 };
2079
2080 'outer: for selection in selections {
2081 if selection.id == last_added_selection {
2082 let range = selection.display_range(&display_map).sorted();
2083 debug_assert_eq!(range.start.row(), range.end.row());
2084 let mut row = range.start.row();
2085 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2086 {
2087 start..end
2088 } else {
2089 cmp::min(range.start.column(), range.end.column())
2090 ..cmp::max(range.start.column(), range.end.column())
2091 };
2092
2093 while row != end_row {
2094 if above {
2095 row -= 1;
2096 } else {
2097 row += 1;
2098 }
2099
2100 if let Some(new_selection) = self.build_columnar_selection(
2101 &display_map,
2102 row,
2103 &columns,
2104 selection.reversed,
2105 ) {
2106 state.stack.push(new_selection.id);
2107 if above {
2108 new_selections.push(new_selection);
2109 new_selections.push(selection);
2110 } else {
2111 new_selections.push(selection);
2112 new_selections.push(new_selection);
2113 }
2114
2115 continue 'outer;
2116 }
2117 }
2118 }
2119
2120 new_selections.push(selection);
2121 }
2122 } else {
2123 new_selections = selections;
2124 new_selections.retain(|s| s.id != last_added_selection);
2125 state.stack.pop();
2126 }
2127
2128 self.update_selections(new_selections, true, cx);
2129 if state.stack.len() > 1 {
2130 self.add_selections_state = Some(state);
2131 }
2132 }
2133
2134 pub fn select_larger_syntax_node(
2135 &mut self,
2136 _: &SelectLargerSyntaxNode,
2137 cx: &mut ViewContext<Self>,
2138 ) {
2139 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2140 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2141 let buffer = self.buffer.read(cx);
2142
2143 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2144 let mut selected_larger_node = false;
2145 let mut new_selections = old_selections
2146 .iter()
2147 .map(|selection| {
2148 let old_range = selection.start..selection.end;
2149 let mut new_range = old_range.clone();
2150 while let Some(containing_range) =
2151 buffer.range_for_syntax_ancestor(new_range.clone())
2152 {
2153 new_range = containing_range;
2154 if !display_map.intersects_fold(new_range.start)
2155 && !display_map.intersects_fold(new_range.end)
2156 {
2157 break;
2158 }
2159 }
2160
2161 selected_larger_node |= new_range != old_range;
2162 Selection {
2163 id: selection.id,
2164 start: new_range.start,
2165 end: new_range.end,
2166 goal: SelectionGoal::None,
2167 reversed: selection.reversed,
2168 }
2169 })
2170 .collect::<Vec<_>>();
2171
2172 if selected_larger_node {
2173 stack.push(old_selections);
2174 new_selections.sort_unstable_by_key(|selection| selection.start);
2175 self.update_selections(new_selections, true, cx);
2176 }
2177 self.select_larger_syntax_node_stack = stack;
2178 }
2179
2180 pub fn select_smaller_syntax_node(
2181 &mut self,
2182 _: &SelectSmallerSyntaxNode,
2183 cx: &mut ViewContext<Self>,
2184 ) {
2185 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2186 if let Some(selections) = stack.pop() {
2187 self.update_selections(selections.to_vec(), true, cx);
2188 }
2189 self.select_larger_syntax_node_stack = stack;
2190 }
2191
2192 pub fn move_to_enclosing_bracket(
2193 &mut self,
2194 _: &MoveToEnclosingBracket,
2195 cx: &mut ViewContext<Self>,
2196 ) {
2197 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2198 let buffer = self.buffer.read(cx.as_ref());
2199 for selection in &mut selections {
2200 if let Some((open_range, close_range)) =
2201 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2202 {
2203 let close_range = close_range.to_inclusive();
2204 let destination = if close_range.contains(&selection.start)
2205 && close_range.contains(&selection.end)
2206 {
2207 open_range.end
2208 } else {
2209 *close_range.start()
2210 };
2211 selection.start = destination;
2212 selection.end = destination;
2213 }
2214 }
2215
2216 self.update_selections(selections, true, cx);
2217 }
2218
2219 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2220 let selection = self.newest_selection::<usize>(cx);
2221 let buffer = self.buffer.read(cx.as_ref());
2222 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2223 active_diagnostics
2224 .primary_range
2225 .to_offset(buffer)
2226 .to_inclusive()
2227 });
2228 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2229 if active_primary_range.contains(&selection.head()) {
2230 *active_primary_range.end()
2231 } else {
2232 selection.head()
2233 }
2234 } else {
2235 selection.head()
2236 };
2237
2238 loop {
2239 let next_group = buffer
2240 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2241 .filter(|(_, diagnostic)| diagnostic.is_primary)
2242 .skip_while(|(range, _)| {
2243 Some(range.end) == active_primary_range.as_ref().map(|r| *r.end())
2244 })
2245 .next()
2246 .map(|(range, diagnostic)| (range, diagnostic.group_id));
2247
2248 if let Some((primary_range, group_id)) = next_group {
2249 self.dismiss_diagnostics(cx);
2250 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2251 let buffer = self.buffer.read(cx);
2252 let diagnostic_group = buffer
2253 .diagnostic_group::<Point>(group_id)
2254 .map(|(range, diagnostic)| (range, diagnostic.clone()))
2255 .collect::<Vec<_>>();
2256 let primary_range = buffer.anchor_after(primary_range.start)
2257 ..buffer.anchor_before(primary_range.end);
2258
2259 let block_ids = display_map
2260 .insert_blocks(
2261 diagnostic_group.iter().map(|(range, diagnostic)| {
2262 let build_settings = self.build_settings.clone();
2263 let message_len = diagnostic.message.len();
2264 let severity = diagnostic.severity;
2265 BlockProperties {
2266 position: range.start,
2267 text: diagnostic.message.as_str(),
2268 build_runs: Some(Arc::new(move |cx| {
2269 let settings = build_settings.borrow()(cx);
2270 vec![(
2271 message_len,
2272 diagnostic_color(severity, &settings.style).into(),
2273 )]
2274 })),
2275 disposition: BlockDisposition::Below,
2276 }
2277 }),
2278 cx,
2279 )
2280 .into_iter()
2281 .collect();
2282
2283 Some(ActiveDiagnosticGroup {
2284 primary_range,
2285 block_ids,
2286 })
2287 });
2288
2289 self.update_selections(
2290 vec![Selection {
2291 id: selection.id,
2292 start: primary_range.start,
2293 end: primary_range.start,
2294 reversed: false,
2295 goal: SelectionGoal::None,
2296 }],
2297 true,
2298 cx,
2299 );
2300 break;
2301 } else if search_start == 0 {
2302 break;
2303 } else {
2304 // Cycle around to the start of the buffer.
2305 search_start = 0;
2306 }
2307 }
2308 }
2309
2310 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2311 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2312 self.display_map.update(cx, |display_map, cx| {
2313 display_map.remove_blocks(active_diagnostic_group.block_ids, cx);
2314 });
2315 cx.notify();
2316 }
2317 }
2318
2319 fn build_columnar_selection(
2320 &mut self,
2321 display_map: &DisplayMapSnapshot,
2322 row: u32,
2323 columns: &Range<u32>,
2324 reversed: bool,
2325 ) -> Option<Selection<Point>> {
2326 let is_empty = columns.start == columns.end;
2327 let line_len = display_map.line_len(row);
2328 if columns.start < line_len || (is_empty && columns.start == line_len) {
2329 let start = DisplayPoint::new(row, columns.start);
2330 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2331 Some(Selection {
2332 id: post_inc(&mut self.next_selection_id),
2333 start: start.to_point(display_map),
2334 end: end.to_point(display_map),
2335 reversed,
2336 goal: SelectionGoal::ColumnRange {
2337 start: columns.start,
2338 end: columns.end,
2339 },
2340 })
2341 } else {
2342 None
2343 }
2344 }
2345
2346 pub fn active_selection_sets<'a>(
2347 &'a self,
2348 cx: &'a AppContext,
2349 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2350 let buffer = self.buffer.read(cx);
2351 let replica_id = buffer.replica_id();
2352 buffer
2353 .selection_sets()
2354 .filter(move |(set_id, set)| {
2355 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2356 })
2357 .map(|(set_id, _)| *set_id)
2358 }
2359
2360 pub fn selections_in_range<'a>(
2361 &'a self,
2362 set_id: SelectionSetId,
2363 range: Range<DisplayPoint>,
2364 cx: &'a mut MutableAppContext,
2365 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2367 let buffer = self.buffer.read(cx);
2368 let selections = self
2369 .selection_set(cx)
2370 .selections::<Point, _>(buffer)
2371 .collect::<Vec<_>>();
2372 let start = range.start.to_point(&display_map);
2373 let start_index = self.selection_insertion_index(&selections, start);
2374 let pending_selection = if set_id.replica_id == self.buffer.read(cx).replica_id() {
2375 self.pending_selection.as_ref().and_then(|pending| {
2376 let mut selection_start = pending.start.to_display_point(&display_map);
2377 let mut selection_end = pending.end.to_display_point(&display_map);
2378 if pending.reversed {
2379 mem::swap(&mut selection_start, &mut selection_end);
2380 }
2381 if selection_start <= range.end || selection_end <= range.end {
2382 Some(selection_start..selection_end)
2383 } else {
2384 None
2385 }
2386 })
2387 } else {
2388 None
2389 };
2390 selections
2391 .into_iter()
2392 .skip(start_index)
2393 .map(move |s| s.display_range(&display_map))
2394 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2395 .chain(pending_selection)
2396 }
2397
2398 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2399 match selections.binary_search_by_key(&start, |probe| probe.start) {
2400 Ok(index) => index,
2401 Err(index) => {
2402 if index > 0 && selections[index - 1].end > start {
2403 index - 1
2404 } else {
2405 index
2406 }
2407 }
2408 }
2409 }
2410
2411 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2412 where
2413 D: 'a + TextDimension<'a> + Ord,
2414 {
2415 let buffer = self.buffer.read(cx);
2416 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2417 let mut pending_selection = self.pending_selection(cx);
2418 iter::from_fn(move || {
2419 if let Some(pending) = pending_selection.as_mut() {
2420 while let Some(next_selection) = selections.peek() {
2421 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2422 let next_selection = selections.next().unwrap();
2423 if next_selection.start < pending.start {
2424 pending.start = next_selection.start;
2425 }
2426 if next_selection.end > pending.end {
2427 pending.end = next_selection.end;
2428 }
2429 } else if next_selection.end < pending.start {
2430 return selections.next();
2431 } else {
2432 break;
2433 }
2434 }
2435
2436 pending_selection.take()
2437 } else {
2438 selections.next()
2439 }
2440 })
2441 }
2442
2443 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2444 where
2445 D: 'a + TextDimension<'a>,
2446 {
2447 let buffer = self.buffer.read(cx);
2448 self.pending_selection.as_ref().map(|selection| Selection {
2449 id: selection.id,
2450 start: selection.start.summary::<D, _>(buffer),
2451 end: selection.end.summary::<D, _>(buffer),
2452 reversed: selection.reversed,
2453 goal: selection.goal,
2454 })
2455 }
2456
2457 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2458 let mut selection_count = self.selection_set(cx).len();
2459 if self.pending_selection.is_some() {
2460 selection_count += 1;
2461 }
2462 selection_count
2463 }
2464
2465 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2466 where
2467 T: 'a + TextDimension<'a>,
2468 {
2469 let buffer = self.buffer.read(cx);
2470 self.selection_set(cx)
2471 .oldest_selection(buffer)
2472 .or_else(|| self.pending_selection(cx))
2473 .unwrap()
2474 }
2475
2476 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2477 where
2478 T: 'a + TextDimension<'a>,
2479 {
2480 let buffer = self.buffer.read(cx);
2481 self.pending_selection(cx)
2482 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2483 .unwrap()
2484 }
2485
2486 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2487 self.buffer
2488 .read(cx)
2489 .selection_set(self.selection_set_id)
2490 .unwrap()
2491 }
2492
2493 fn update_selections<T>(
2494 &mut self,
2495 mut selections: Vec<Selection<T>>,
2496 autoscroll: bool,
2497 cx: &mut ViewContext<Self>,
2498 ) where
2499 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2500 {
2501 // Merge overlapping selections.
2502 let buffer = self.buffer.read(cx);
2503 let mut i = 1;
2504 while i < selections.len() {
2505 if selections[i - 1].end >= selections[i].start {
2506 let removed = selections.remove(i);
2507 if removed.start < selections[i - 1].start {
2508 selections[i - 1].start = removed.start;
2509 }
2510 if removed.end > selections[i - 1].end {
2511 selections[i - 1].end = removed.end;
2512 }
2513 } else {
2514 i += 1;
2515 }
2516 }
2517
2518 self.pending_selection = None;
2519 self.add_selections_state = None;
2520 self.select_larger_syntax_node_stack.clear();
2521 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2522 let all_selections_inside_autoclose_ranges =
2523 if selections.len() == autoclose_pair_state.ranges.len() {
2524 selections
2525 .iter()
2526 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2527 .all(|(selection, autoclose_range)| {
2528 let head = selection.head().to_point(&*buffer);
2529 autoclose_range.start <= head && autoclose_range.end >= head
2530 })
2531 } else {
2532 false
2533 };
2534
2535 if all_selections_inside_autoclose_ranges {
2536 break;
2537 } else {
2538 self.autoclose_stack.pop();
2539 }
2540 }
2541
2542 if autoscroll {
2543 self.request_autoscroll(cx);
2544 }
2545 self.pause_cursor_blinking(cx);
2546
2547 self.buffer.update(cx, |buffer, cx| {
2548 buffer
2549 .update_selection_set(self.selection_set_id, &selections, cx)
2550 .unwrap();
2551 });
2552 }
2553
2554 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2555 self.autoscroll_requested = true;
2556 cx.notify();
2557 }
2558
2559 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2560 self.end_selection(cx);
2561 self.buffer.update(cx, |buffer, _| {
2562 buffer
2563 .start_transaction(Some(self.selection_set_id))
2564 .unwrap()
2565 });
2566 }
2567
2568 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2569 self.buffer.update(cx, |buffer, cx| {
2570 buffer
2571 .end_transaction(Some(self.selection_set_id), cx)
2572 .unwrap()
2573 });
2574 }
2575
2576 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2577 log::info!("Editor::page_up");
2578 }
2579
2580 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2581 log::info!("Editor::page_down");
2582 }
2583
2584 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2585 let mut fold_ranges = Vec::new();
2586
2587 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2588 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2589 for selection in selections {
2590 let range = selection.display_range(&display_map).sorted();
2591 let buffer_start_row = range.start.to_point(&display_map).row;
2592
2593 for row in (0..=range.end.row()).rev() {
2594 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2595 let fold_range = self.foldable_range_for_line(&display_map, row);
2596 if fold_range.end.row >= buffer_start_row {
2597 fold_ranges.push(fold_range);
2598 if row <= range.start.row() {
2599 break;
2600 }
2601 }
2602 }
2603 }
2604 }
2605
2606 self.fold_ranges(fold_ranges, cx);
2607 }
2608
2609 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2610 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2611 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2612 let buffer = self.buffer.read(cx);
2613 let ranges = selections
2614 .iter()
2615 .map(|s| {
2616 let range = s.display_range(&display_map).sorted();
2617 let mut start = range.start.to_point(&display_map);
2618 let mut end = range.end.to_point(&display_map);
2619 start.column = 0;
2620 end.column = buffer.line_len(end.row);
2621 start..end
2622 })
2623 .collect::<Vec<_>>();
2624 self.unfold_ranges(ranges, cx);
2625 }
2626
2627 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2628 let max_point = display_map.max_point();
2629 if display_row >= max_point.row() {
2630 false
2631 } else {
2632 let (start_indent, is_blank) = display_map.line_indent(display_row);
2633 if is_blank {
2634 false
2635 } else {
2636 for display_row in display_row + 1..=max_point.row() {
2637 let (indent, is_blank) = display_map.line_indent(display_row);
2638 if !is_blank {
2639 return indent > start_indent;
2640 }
2641 }
2642 false
2643 }
2644 }
2645 }
2646
2647 fn foldable_range_for_line(
2648 &self,
2649 display_map: &DisplayMapSnapshot,
2650 start_row: u32,
2651 ) -> Range<Point> {
2652 let max_point = display_map.max_point();
2653
2654 let (start_indent, _) = display_map.line_indent(start_row);
2655 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2656 let mut end = None;
2657 for row in start_row + 1..=max_point.row() {
2658 let (indent, is_blank) = display_map.line_indent(row);
2659 if !is_blank && indent <= start_indent {
2660 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2661 break;
2662 }
2663 }
2664
2665 let end = end.unwrap_or(max_point);
2666 return start.to_point(display_map)..end.to_point(display_map);
2667 }
2668
2669 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2670 let selections = self.selections::<Point>(cx);
2671 let ranges = selections.map(|s| s.start..s.end).collect();
2672 self.fold_ranges(ranges, cx);
2673 }
2674
2675 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2676 if !ranges.is_empty() {
2677 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2678 self.autoscroll_requested = true;
2679 cx.notify();
2680 }
2681 }
2682
2683 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2684 if !ranges.is_empty() {
2685 self.display_map
2686 .update(cx, |map, cx| map.unfold(ranges, cx));
2687 self.autoscroll_requested = true;
2688 cx.notify();
2689 }
2690 }
2691
2692 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2693 self.display_map
2694 .update(cx, |map, cx| map.snapshot(cx))
2695 .longest_row()
2696 }
2697
2698 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2699 self.display_map
2700 .update(cx, |map, cx| map.snapshot(cx))
2701 .max_point()
2702 }
2703
2704 pub fn text(&self, cx: &AppContext) -> String {
2705 self.buffer.read(cx).text()
2706 }
2707
2708 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2709 self.display_map
2710 .update(cx, |map, cx| map.snapshot(cx))
2711 .text()
2712 }
2713
2714 // pub fn font_size(&self) -> f32 {
2715 // self.settings.font_size
2716 // }
2717
2718 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2719 self.display_map
2720 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2721 }
2722
2723 fn next_blink_epoch(&mut self) -> usize {
2724 self.blink_epoch += 1;
2725 self.blink_epoch
2726 }
2727
2728 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2729 self.show_local_cursors = true;
2730 cx.notify();
2731
2732 let epoch = self.next_blink_epoch();
2733 cx.spawn(|this, mut cx| {
2734 let this = this.downgrade();
2735 async move {
2736 Timer::after(CURSOR_BLINK_INTERVAL).await;
2737 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2738 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2739 }
2740 }
2741 })
2742 .detach();
2743 }
2744
2745 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2746 if epoch == self.blink_epoch {
2747 self.blinking_paused = false;
2748 self.blink_cursors(epoch, cx);
2749 }
2750 }
2751
2752 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2753 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2754 self.show_local_cursors = !self.show_local_cursors;
2755 cx.notify();
2756
2757 let epoch = self.next_blink_epoch();
2758 cx.spawn(|this, mut cx| {
2759 let this = this.downgrade();
2760 async move {
2761 Timer::after(CURSOR_BLINK_INTERVAL).await;
2762 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2763 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2764 }
2765 }
2766 })
2767 .detach();
2768 }
2769 }
2770
2771 pub fn show_local_cursors(&self) -> bool {
2772 self.show_local_cursors
2773 }
2774
2775 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2776 cx.notify();
2777 }
2778
2779 fn on_buffer_event(
2780 &mut self,
2781 _: ModelHandle<Buffer>,
2782 event: &language::Event,
2783 cx: &mut ViewContext<Self>,
2784 ) {
2785 match event {
2786 language::Event::Edited => cx.emit(Event::Edited),
2787 language::Event::Dirtied => cx.emit(Event::Dirtied),
2788 language::Event::Saved => cx.emit(Event::Saved),
2789 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2790 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2791 language::Event::Closed => cx.emit(Event::Closed),
2792 language::Event::Reparsed => {}
2793 }
2794 }
2795
2796 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2797 cx.notify();
2798 }
2799}
2800
2801impl Snapshot {
2802 pub fn is_empty(&self) -> bool {
2803 self.display_snapshot.is_empty()
2804 }
2805
2806 pub fn is_focused(&self) -> bool {
2807 self.is_focused
2808 }
2809
2810 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2811 self.placeholder_text.as_ref()
2812 }
2813
2814 pub fn buffer_row_count(&self) -> u32 {
2815 self.display_snapshot.buffer_row_count()
2816 }
2817
2818 pub fn buffer_rows(&self, start_row: u32) -> BufferRows {
2819 self.display_snapshot.buffer_rows(start_row)
2820 }
2821
2822 pub fn chunks<'a>(
2823 &'a self,
2824 display_rows: Range<u32>,
2825 theme: Option<&'a SyntaxTheme>,
2826 cx: &'a AppContext,
2827 ) -> display_map::Chunks<'a> {
2828 self.display_snapshot.chunks(display_rows, theme, cx)
2829 }
2830
2831 pub fn scroll_position(&self) -> Vector2F {
2832 compute_scroll_position(
2833 &self.display_snapshot,
2834 self.scroll_position,
2835 &self.scroll_top_anchor,
2836 )
2837 }
2838
2839 pub fn max_point(&self) -> DisplayPoint {
2840 self.display_snapshot.max_point()
2841 }
2842
2843 pub fn longest_row(&self) -> u32 {
2844 self.display_snapshot.longest_row()
2845 }
2846
2847 pub fn line_len(&self, display_row: u32) -> u32 {
2848 self.display_snapshot.line_len(display_row)
2849 }
2850
2851 pub fn line(&self, display_row: u32) -> String {
2852 self.display_snapshot.line(display_row)
2853 }
2854
2855 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2856 self.display_snapshot.prev_row_boundary(point)
2857 }
2858
2859 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2860 self.display_snapshot.next_row_boundary(point)
2861 }
2862}
2863
2864impl EditorSettings {
2865 #[cfg(any(test, feature = "test-support"))]
2866 pub fn test(cx: &AppContext) -> Self {
2867 Self {
2868 tab_size: 4,
2869 style: {
2870 let font_cache: &gpui::FontCache = cx.font_cache();
2871 let font_family_name = Arc::from("Monaco");
2872 let font_properties = Default::default();
2873 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
2874 let font_id = font_cache
2875 .select_font(font_family_id, &font_properties)
2876 .unwrap();
2877 EditorStyle {
2878 text: gpui::fonts::TextStyle {
2879 font_family_name,
2880 font_family_id,
2881 font_id,
2882 font_size: 14.,
2883 color: gpui::color::Color::from_u32(0xff0000ff),
2884 font_properties,
2885 underline: None,
2886 },
2887 placeholder_text: None,
2888 background: Default::default(),
2889 gutter_background: Default::default(),
2890 active_line_background: Default::default(),
2891 line_number: Default::default(),
2892 line_number_active: Default::default(),
2893 selection: Default::default(),
2894 guest_selections: Default::default(),
2895 syntax: Default::default(),
2896 error_color: Default::default(),
2897 warning_color: Default::default(),
2898 information_color: Default::default(),
2899 hint_color: Default::default(),
2900 }
2901 },
2902 }
2903 }
2904}
2905
2906fn compute_scroll_position(
2907 snapshot: &DisplayMapSnapshot,
2908 mut scroll_position: Vector2F,
2909 scroll_top_anchor: &Anchor,
2910) -> Vector2F {
2911 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
2912 scroll_position.set_y(scroll_top + scroll_position.y());
2913 scroll_position
2914}
2915
2916pub enum Event {
2917 Activate,
2918 Edited,
2919 Blurred,
2920 Dirtied,
2921 Saved,
2922 FileHandleChanged,
2923 Closed,
2924}
2925
2926impl Entity for Editor {
2927 type Event = Event;
2928
2929 fn release(&mut self, cx: &mut MutableAppContext) {
2930 self.buffer.update(cx, |buffer, cx| {
2931 buffer
2932 .remove_selection_set(self.selection_set_id, cx)
2933 .unwrap();
2934 });
2935 }
2936}
2937
2938impl View for Editor {
2939 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
2940 let settings = self.build_settings.borrow_mut()(cx);
2941 self.display_map.update(cx, |map, cx| {
2942 map.set_font(
2943 settings.style.text.font_id,
2944 settings.style.text.font_size,
2945 cx,
2946 )
2947 });
2948 EditorElement::new(self.handle.clone(), settings).boxed()
2949 }
2950
2951 fn ui_name() -> &'static str {
2952 "Editor"
2953 }
2954
2955 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
2956 self.focused = true;
2957 self.blink_cursors(self.blink_epoch, cx);
2958 self.buffer.update(cx, |buffer, cx| {
2959 buffer
2960 .set_active_selection_set(Some(self.selection_set_id), cx)
2961 .unwrap();
2962 });
2963 }
2964
2965 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
2966 self.focused = false;
2967 self.show_local_cursors = false;
2968 self.buffer.update(cx, |buffer, cx| {
2969 buffer.set_active_selection_set(None, cx).unwrap();
2970 });
2971 cx.emit(Event::Blurred);
2972 cx.notify();
2973 }
2974
2975 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
2976 let mut cx = Self::default_keymap_context();
2977 let mode = match self.mode {
2978 EditorMode::SingleLine => "single_line",
2979 EditorMode::AutoHeight { .. } => "auto_height",
2980 EditorMode::Full => "full",
2981 };
2982 cx.map.insert("mode".into(), mode.into());
2983 cx
2984 }
2985}
2986
2987impl SelectionExt for Selection<Point> {
2988 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
2989 let start = self.start.to_display_point(map);
2990 let end = self.end.to_display_point(map);
2991 if self.reversed {
2992 end..start
2993 } else {
2994 start..end
2995 }
2996 }
2997
2998 fn spanned_rows(
2999 &self,
3000 include_end_if_at_line_start: bool,
3001 map: &DisplayMapSnapshot,
3002 ) -> SpannedRows {
3003 let display_start = self.start.to_display_point(map);
3004 let mut display_end = self.end.to_display_point(map);
3005 if !include_end_if_at_line_start
3006 && display_end.row() != map.max_point().row()
3007 && display_start.row() != display_end.row()
3008 && display_end.column() == 0
3009 {
3010 *display_end.row_mut() -= 1;
3011 }
3012
3013 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3014 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3015
3016 SpannedRows {
3017 buffer_rows: buffer_start.row..buffer_end.row + 1,
3018 display_rows: display_start.row()..display_end.row() + 1,
3019 }
3020 }
3021}
3022
3023pub fn diagnostic_color(severity: DiagnosticSeverity, style: &EditorStyle) -> Color {
3024 match severity {
3025 DiagnosticSeverity::ERROR => style.error_color,
3026 DiagnosticSeverity::WARNING => style.warning_color,
3027 DiagnosticSeverity::INFORMATION => style.information_color,
3028 DiagnosticSeverity::HINT => style.hint_color,
3029 _ => style.text.color,
3030 }
3031}
3032
3033#[cfg(test)]
3034mod tests {
3035 use super::*;
3036 use crate::test::sample_text;
3037 use buffer::Point;
3038 use unindent::Unindent;
3039
3040 #[gpui::test]
3041 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3042 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3043 let settings = EditorSettings::test(cx);
3044 let (_, editor) =
3045 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3046
3047 editor.update(cx, |view, cx| {
3048 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3049 });
3050
3051 assert_eq!(
3052 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3053 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3054 );
3055
3056 editor.update(cx, |view, cx| {
3057 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3058 });
3059
3060 assert_eq!(
3061 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3062 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3063 );
3064
3065 editor.update(cx, |view, cx| {
3066 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3067 });
3068
3069 assert_eq!(
3070 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3071 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3072 );
3073
3074 editor.update(cx, |view, cx| {
3075 view.end_selection(cx);
3076 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3077 });
3078
3079 assert_eq!(
3080 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3081 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3082 );
3083
3084 editor.update(cx, |view, cx| {
3085 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
3086 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3087 });
3088
3089 assert_eq!(
3090 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3091 [
3092 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3093 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3094 ]
3095 );
3096
3097 editor.update(cx, |view, cx| {
3098 view.end_selection(cx);
3099 });
3100
3101 assert_eq!(
3102 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3103 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3104 );
3105 }
3106
3107 #[gpui::test]
3108 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3109 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3110 let settings = EditorSettings::test(cx);
3111 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3112
3113 view.update(cx, |view, cx| {
3114 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3115 assert_eq!(
3116 view.selection_ranges(cx),
3117 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3118 );
3119 });
3120
3121 view.update(cx, |view, cx| {
3122 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3123 assert_eq!(
3124 view.selection_ranges(cx),
3125 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3126 );
3127 });
3128
3129 view.update(cx, |view, cx| {
3130 view.cancel(&Cancel, cx);
3131 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3132 assert_eq!(
3133 view.selection_ranges(cx),
3134 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3135 );
3136 });
3137 }
3138
3139 #[gpui::test]
3140 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3141 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3142 let settings = EditorSettings::test(cx);
3143 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3144
3145 view.update(cx, |view, cx| {
3146 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
3147 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3148 view.end_selection(cx);
3149
3150 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
3151 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3152 view.end_selection(cx);
3153 assert_eq!(
3154 view.selection_ranges(cx),
3155 [
3156 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3157 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3158 ]
3159 );
3160 });
3161
3162 view.update(cx, |view, cx| {
3163 view.cancel(&Cancel, cx);
3164 assert_eq!(
3165 view.selection_ranges(cx),
3166 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3167 );
3168 });
3169
3170 view.update(cx, |view, cx| {
3171 view.cancel(&Cancel, cx);
3172 assert_eq!(
3173 view.selection_ranges(cx),
3174 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3175 );
3176 });
3177 }
3178
3179 #[gpui::test]
3180 fn test_fold(cx: &mut gpui::MutableAppContext) {
3181 let buffer = cx.add_model(|cx| {
3182 Buffer::new(
3183 0,
3184 "
3185 impl Foo {
3186 // Hello!
3187
3188 fn a() {
3189 1
3190 }
3191
3192 fn b() {
3193 2
3194 }
3195
3196 fn c() {
3197 3
3198 }
3199 }
3200 "
3201 .unindent(),
3202 cx,
3203 )
3204 });
3205 let settings = EditorSettings::test(&cx);
3206 let (_, view) = cx.add_window(Default::default(), |cx| {
3207 build_editor(buffer.clone(), settings, cx)
3208 });
3209
3210 view.update(cx, |view, cx| {
3211 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3212 .unwrap();
3213 view.fold(&Fold, cx);
3214 assert_eq!(
3215 view.display_text(cx),
3216 "
3217 impl Foo {
3218 // Hello!
3219
3220 fn a() {
3221 1
3222 }
3223
3224 fn b() {…
3225 }
3226
3227 fn c() {…
3228 }
3229 }
3230 "
3231 .unindent(),
3232 );
3233
3234 view.fold(&Fold, cx);
3235 assert_eq!(
3236 view.display_text(cx),
3237 "
3238 impl Foo {…
3239 }
3240 "
3241 .unindent(),
3242 );
3243
3244 view.unfold(&Unfold, cx);
3245 assert_eq!(
3246 view.display_text(cx),
3247 "
3248 impl Foo {
3249 // Hello!
3250
3251 fn a() {
3252 1
3253 }
3254
3255 fn b() {…
3256 }
3257
3258 fn c() {…
3259 }
3260 }
3261 "
3262 .unindent(),
3263 );
3264
3265 view.unfold(&Unfold, cx);
3266 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3267 });
3268 }
3269
3270 #[gpui::test]
3271 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3272 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3273 let settings = EditorSettings::test(&cx);
3274 let (_, view) = cx.add_window(Default::default(), |cx| {
3275 build_editor(buffer.clone(), settings, cx)
3276 });
3277
3278 buffer.update(cx, |buffer, cx| {
3279 buffer.edit(
3280 vec![
3281 Point::new(1, 0)..Point::new(1, 0),
3282 Point::new(1, 1)..Point::new(1, 1),
3283 ],
3284 "\t",
3285 cx,
3286 );
3287 });
3288
3289 view.update(cx, |view, cx| {
3290 assert_eq!(
3291 view.selection_ranges(cx),
3292 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3293 );
3294
3295 view.move_down(&MoveDown, cx);
3296 assert_eq!(
3297 view.selection_ranges(cx),
3298 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3299 );
3300
3301 view.move_right(&MoveRight, cx);
3302 assert_eq!(
3303 view.selection_ranges(cx),
3304 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3305 );
3306
3307 view.move_left(&MoveLeft, cx);
3308 assert_eq!(
3309 view.selection_ranges(cx),
3310 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3311 );
3312
3313 view.move_up(&MoveUp, cx);
3314 assert_eq!(
3315 view.selection_ranges(cx),
3316 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3317 );
3318
3319 view.move_to_end(&MoveToEnd, cx);
3320 assert_eq!(
3321 view.selection_ranges(cx),
3322 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3323 );
3324
3325 view.move_to_beginning(&MoveToBeginning, cx);
3326 assert_eq!(
3327 view.selection_ranges(cx),
3328 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3329 );
3330
3331 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3332 .unwrap();
3333 view.select_to_beginning(&SelectToBeginning, cx);
3334 assert_eq!(
3335 view.selection_ranges(cx),
3336 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3337 );
3338
3339 view.select_to_end(&SelectToEnd, cx);
3340 assert_eq!(
3341 view.selection_ranges(cx),
3342 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3343 );
3344 });
3345 }
3346
3347 #[gpui::test]
3348 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3349 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3350 let settings = EditorSettings::test(&cx);
3351 let (_, view) = cx.add_window(Default::default(), |cx| {
3352 build_editor(buffer.clone(), settings, cx)
3353 });
3354
3355 assert_eq!('ⓐ'.len_utf8(), 3);
3356 assert_eq!('α'.len_utf8(), 2);
3357
3358 view.update(cx, |view, cx| {
3359 view.fold_ranges(
3360 vec![
3361 Point::new(0, 6)..Point::new(0, 12),
3362 Point::new(1, 2)..Point::new(1, 4),
3363 Point::new(2, 4)..Point::new(2, 8),
3364 ],
3365 cx,
3366 );
3367 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3368
3369 view.move_right(&MoveRight, cx);
3370 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3371 view.move_right(&MoveRight, cx);
3372 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3373 view.move_right(&MoveRight, cx);
3374 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3375
3376 view.move_down(&MoveDown, cx);
3377 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3378 view.move_left(&MoveLeft, cx);
3379 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3380 view.move_left(&MoveLeft, cx);
3381 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3382
3383 view.move_down(&MoveDown, cx);
3384 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3385 view.move_right(&MoveRight, cx);
3386 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3387 view.move_right(&MoveRight, cx);
3388 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3389 view.move_right(&MoveRight, cx);
3390 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3391
3392 view.move_up(&MoveUp, cx);
3393 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3394 view.move_up(&MoveUp, cx);
3395 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3396 view.move_left(&MoveLeft, cx);
3397 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3398 view.move_left(&MoveLeft, cx);
3399 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3400 view.move_left(&MoveLeft, cx);
3401 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3402 });
3403 }
3404
3405 #[gpui::test]
3406 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3407 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3408 let settings = EditorSettings::test(&cx);
3409 let (_, view) = cx.add_window(Default::default(), |cx| {
3410 build_editor(buffer.clone(), settings, cx)
3411 });
3412 view.update(cx, |view, cx| {
3413 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3414 .unwrap();
3415
3416 view.move_down(&MoveDown, cx);
3417 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3418
3419 view.move_down(&MoveDown, cx);
3420 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3421
3422 view.move_down(&MoveDown, cx);
3423 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3424
3425 view.move_down(&MoveDown, cx);
3426 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3427
3428 view.move_up(&MoveUp, cx);
3429 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3430
3431 view.move_up(&MoveUp, cx);
3432 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3433 });
3434 }
3435
3436 #[gpui::test]
3437 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3438 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3439 let settings = EditorSettings::test(&cx);
3440 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3441 view.update(cx, |view, cx| {
3442 view.select_display_ranges(
3443 &[
3444 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3445 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3446 ],
3447 cx,
3448 )
3449 .unwrap();
3450 });
3451
3452 view.update(cx, |view, cx| {
3453 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3454 assert_eq!(
3455 view.selection_ranges(cx),
3456 &[
3457 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3458 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3459 ]
3460 );
3461 });
3462
3463 view.update(cx, |view, cx| {
3464 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3465 assert_eq!(
3466 view.selection_ranges(cx),
3467 &[
3468 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3469 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3470 ]
3471 );
3472 });
3473
3474 view.update(cx, |view, cx| {
3475 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3476 assert_eq!(
3477 view.selection_ranges(cx),
3478 &[
3479 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3480 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3481 ]
3482 );
3483 });
3484
3485 view.update(cx, |view, cx| {
3486 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3487 assert_eq!(
3488 view.selection_ranges(cx),
3489 &[
3490 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3491 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3492 ]
3493 );
3494 });
3495
3496 // Moving to the end of line again is a no-op.
3497 view.update(cx, |view, cx| {
3498 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3499 assert_eq!(
3500 view.selection_ranges(cx),
3501 &[
3502 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3503 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3504 ]
3505 );
3506 });
3507
3508 view.update(cx, |view, cx| {
3509 view.move_left(&MoveLeft, cx);
3510 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3511 assert_eq!(
3512 view.selection_ranges(cx),
3513 &[
3514 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3515 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3516 ]
3517 );
3518 });
3519
3520 view.update(cx, |view, cx| {
3521 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3522 assert_eq!(
3523 view.selection_ranges(cx),
3524 &[
3525 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3526 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3527 ]
3528 );
3529 });
3530
3531 view.update(cx, |view, cx| {
3532 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3533 assert_eq!(
3534 view.selection_ranges(cx),
3535 &[
3536 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3537 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3538 ]
3539 );
3540 });
3541
3542 view.update(cx, |view, cx| {
3543 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3544 assert_eq!(
3545 view.selection_ranges(cx),
3546 &[
3547 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3548 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3549 ]
3550 );
3551 });
3552
3553 view.update(cx, |view, cx| {
3554 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3555 assert_eq!(view.display_text(cx), "ab\n de");
3556 assert_eq!(
3557 view.selection_ranges(cx),
3558 &[
3559 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3560 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3561 ]
3562 );
3563 });
3564
3565 view.update(cx, |view, cx| {
3566 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3567 assert_eq!(view.display_text(cx), "\n");
3568 assert_eq!(
3569 view.selection_ranges(cx),
3570 &[
3571 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3572 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3573 ]
3574 );
3575 });
3576 }
3577
3578 #[gpui::test]
3579 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3580 let buffer =
3581 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3582 let settings = EditorSettings::test(&cx);
3583 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3584 view.update(cx, |view, cx| {
3585 view.select_display_ranges(
3586 &[
3587 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3588 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3589 ],
3590 cx,
3591 )
3592 .unwrap();
3593 });
3594
3595 view.update(cx, |view, cx| {
3596 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3597 assert_eq!(
3598 view.selection_ranges(cx),
3599 &[
3600 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3601 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3602 ]
3603 );
3604 });
3605
3606 view.update(cx, |view, cx| {
3607 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3608 assert_eq!(
3609 view.selection_ranges(cx),
3610 &[
3611 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3612 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3613 ]
3614 );
3615 });
3616
3617 view.update(cx, |view, cx| {
3618 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3619 assert_eq!(
3620 view.selection_ranges(cx),
3621 &[
3622 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3623 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3624 ]
3625 );
3626 });
3627
3628 view.update(cx, |view, cx| {
3629 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3630 assert_eq!(
3631 view.selection_ranges(cx),
3632 &[
3633 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3634 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3635 ]
3636 );
3637 });
3638
3639 view.update(cx, |view, cx| {
3640 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3641 assert_eq!(
3642 view.selection_ranges(cx),
3643 &[
3644 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3645 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3646 ]
3647 );
3648 });
3649
3650 view.update(cx, |view, cx| {
3651 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3652 assert_eq!(
3653 view.selection_ranges(cx),
3654 &[
3655 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3656 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3657 ]
3658 );
3659 });
3660
3661 view.update(cx, |view, cx| {
3662 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3663 assert_eq!(
3664 view.selection_ranges(cx),
3665 &[
3666 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3667 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3668 ]
3669 );
3670 });
3671
3672 view.update(cx, |view, cx| {
3673 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3674 assert_eq!(
3675 view.selection_ranges(cx),
3676 &[
3677 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3678 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3679 ]
3680 );
3681 });
3682
3683 view.update(cx, |view, cx| {
3684 view.move_right(&MoveRight, cx);
3685 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3686 assert_eq!(
3687 view.selection_ranges(cx),
3688 &[
3689 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3690 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3691 ]
3692 );
3693 });
3694
3695 view.update(cx, |view, cx| {
3696 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3697 assert_eq!(
3698 view.selection_ranges(cx),
3699 &[
3700 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3701 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3702 ]
3703 );
3704 });
3705
3706 view.update(cx, |view, cx| {
3707 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3708 assert_eq!(
3709 view.selection_ranges(cx),
3710 &[
3711 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3712 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3713 ]
3714 );
3715 });
3716 }
3717
3718 #[gpui::test]
3719 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3720 let buffer =
3721 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3722 let settings = EditorSettings::test(&cx);
3723 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3724
3725 view.update(cx, |view, cx| {
3726 view.set_wrap_width(140., cx);
3727 assert_eq!(
3728 view.display_text(cx),
3729 "use one::{\n two::three::\n four::five\n};"
3730 );
3731
3732 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3733 .unwrap();
3734
3735 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3736 assert_eq!(
3737 view.selection_ranges(cx),
3738 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3739 );
3740
3741 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3742 assert_eq!(
3743 view.selection_ranges(cx),
3744 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3745 );
3746
3747 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3748 assert_eq!(
3749 view.selection_ranges(cx),
3750 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3751 );
3752
3753 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3754 assert_eq!(
3755 view.selection_ranges(cx),
3756 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3757 );
3758
3759 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3760 assert_eq!(
3761 view.selection_ranges(cx),
3762 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3763 );
3764
3765 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3766 assert_eq!(
3767 view.selection_ranges(cx),
3768 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3769 );
3770 });
3771 }
3772
3773 #[gpui::test]
3774 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3775 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3776 let settings = EditorSettings::test(&cx);
3777 let (_, view) = cx.add_window(Default::default(), |cx| {
3778 build_editor(buffer.clone(), settings, cx)
3779 });
3780
3781 view.update(cx, |view, cx| {
3782 view.select_display_ranges(
3783 &[
3784 // an empty selection - the preceding word fragment is deleted
3785 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3786 // characters selected - they are deleted
3787 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3788 ],
3789 cx,
3790 )
3791 .unwrap();
3792 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3793 });
3794
3795 assert_eq!(buffer.read(cx).text(), "e two te four");
3796
3797 view.update(cx, |view, cx| {
3798 view.select_display_ranges(
3799 &[
3800 // an empty selection - the following word fragment is deleted
3801 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3802 // characters selected - they are deleted
3803 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3804 ],
3805 cx,
3806 )
3807 .unwrap();
3808 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3809 });
3810
3811 assert_eq!(buffer.read(cx).text(), "e t te our");
3812 }
3813
3814 #[gpui::test]
3815 fn test_newline(cx: &mut gpui::MutableAppContext) {
3816 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
3817 let settings = EditorSettings::test(&cx);
3818 let (_, view) = cx.add_window(Default::default(), |cx| {
3819 build_editor(buffer.clone(), settings, cx)
3820 });
3821
3822 view.update(cx, |view, cx| {
3823 view.select_display_ranges(
3824 &[
3825 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3826 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3827 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
3828 ],
3829 cx,
3830 )
3831 .unwrap();
3832
3833 view.newline(&Newline, cx);
3834 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
3835 });
3836 }
3837
3838 #[gpui::test]
3839 fn test_backspace(cx: &mut gpui::MutableAppContext) {
3840 let buffer = cx.add_model(|cx| {
3841 Buffer::new(
3842 0,
3843 "one two three\nfour five six\nseven eight nine\nten\n",
3844 cx,
3845 )
3846 });
3847 let settings = EditorSettings::test(&cx);
3848 let (_, view) = cx.add_window(Default::default(), |cx| {
3849 build_editor(buffer.clone(), settings, cx)
3850 });
3851
3852 view.update(cx, |view, cx| {
3853 view.select_display_ranges(
3854 &[
3855 // an empty selection - the preceding character is deleted
3856 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3857 // one character selected - it is deleted
3858 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3859 // a line suffix selected - it is deleted
3860 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3861 ],
3862 cx,
3863 )
3864 .unwrap();
3865 view.backspace(&Backspace, cx);
3866 });
3867
3868 assert_eq!(
3869 buffer.read(cx).text(),
3870 "oe two three\nfou five six\nseven ten\n"
3871 );
3872 }
3873
3874 #[gpui::test]
3875 fn test_delete(cx: &mut gpui::MutableAppContext) {
3876 let buffer = cx.add_model(|cx| {
3877 Buffer::new(
3878 0,
3879 "one two three\nfour five six\nseven eight nine\nten\n",
3880 cx,
3881 )
3882 });
3883 let settings = EditorSettings::test(&cx);
3884 let (_, view) = cx.add_window(Default::default(), |cx| {
3885 build_editor(buffer.clone(), settings, cx)
3886 });
3887
3888 view.update(cx, |view, cx| {
3889 view.select_display_ranges(
3890 &[
3891 // an empty selection - the following character is deleted
3892 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3893 // one character selected - it is deleted
3894 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3895 // a line suffix selected - it is deleted
3896 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3897 ],
3898 cx,
3899 )
3900 .unwrap();
3901 view.delete(&Delete, cx);
3902 });
3903
3904 assert_eq!(
3905 buffer.read(cx).text(),
3906 "on two three\nfou five six\nseven ten\n"
3907 );
3908 }
3909
3910 #[gpui::test]
3911 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
3912 let settings = EditorSettings::test(&cx);
3913 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3914 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3915 view.update(cx, |view, cx| {
3916 view.select_display_ranges(
3917 &[
3918 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3919 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
3920 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3921 ],
3922 cx,
3923 )
3924 .unwrap();
3925 view.delete_line(&DeleteLine, cx);
3926 assert_eq!(view.display_text(cx), "ghi");
3927 assert_eq!(
3928 view.selection_ranges(cx),
3929 vec![
3930 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3931 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
3932 ]
3933 );
3934 });
3935
3936 let settings = EditorSettings::test(&cx);
3937 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3938 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3939 view.update(cx, |view, cx| {
3940 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
3941 .unwrap();
3942 view.delete_line(&DeleteLine, cx);
3943 assert_eq!(view.display_text(cx), "ghi\n");
3944 assert_eq!(
3945 view.selection_ranges(cx),
3946 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
3947 );
3948 });
3949 }
3950
3951 #[gpui::test]
3952 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
3953 let settings = EditorSettings::test(&cx);
3954 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3955 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3956 view.update(cx, |view, cx| {
3957 view.select_display_ranges(
3958 &[
3959 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
3960 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3961 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3962 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3963 ],
3964 cx,
3965 )
3966 .unwrap();
3967 view.duplicate_line(&DuplicateLine, cx);
3968 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
3969 assert_eq!(
3970 view.selection_ranges(cx),
3971 vec![
3972 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
3973 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3974 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
3975 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
3976 ]
3977 );
3978 });
3979
3980 let settings = EditorSettings::test(&cx);
3981 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
3982 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3983 view.update(cx, |view, cx| {
3984 view.select_display_ranges(
3985 &[
3986 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
3987 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
3988 ],
3989 cx,
3990 )
3991 .unwrap();
3992 view.duplicate_line(&DuplicateLine, cx);
3993 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
3994 assert_eq!(
3995 view.selection_ranges(cx),
3996 vec![
3997 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
3998 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
3999 ]
4000 );
4001 });
4002 }
4003
4004 #[gpui::test]
4005 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4006 let settings = EditorSettings::test(&cx);
4007 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4008 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4009 view.update(cx, |view, cx| {
4010 view.fold_ranges(
4011 vec![
4012 Point::new(0, 2)..Point::new(1, 2),
4013 Point::new(2, 3)..Point::new(4, 1),
4014 Point::new(7, 0)..Point::new(8, 4),
4015 ],
4016 cx,
4017 );
4018 view.select_display_ranges(
4019 &[
4020 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4021 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4022 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4023 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4024 ],
4025 cx,
4026 )
4027 .unwrap();
4028 assert_eq!(
4029 view.display_text(cx),
4030 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4031 );
4032
4033 view.move_line_up(&MoveLineUp, cx);
4034 assert_eq!(
4035 view.display_text(cx),
4036 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4037 );
4038 assert_eq!(
4039 view.selection_ranges(cx),
4040 vec![
4041 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4042 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4043 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4044 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4045 ]
4046 );
4047 });
4048
4049 view.update(cx, |view, cx| {
4050 view.move_line_down(&MoveLineDown, cx);
4051 assert_eq!(
4052 view.display_text(cx),
4053 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4054 );
4055 assert_eq!(
4056 view.selection_ranges(cx),
4057 vec![
4058 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4059 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4060 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4061 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4062 ]
4063 );
4064 });
4065
4066 view.update(cx, |view, cx| {
4067 view.move_line_down(&MoveLineDown, cx);
4068 assert_eq!(
4069 view.display_text(cx),
4070 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4071 );
4072 assert_eq!(
4073 view.selection_ranges(cx),
4074 vec![
4075 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4076 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4077 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4078 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4079 ]
4080 );
4081 });
4082
4083 view.update(cx, |view, cx| {
4084 view.move_line_up(&MoveLineUp, cx);
4085 assert_eq!(
4086 view.display_text(cx),
4087 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4088 );
4089 assert_eq!(
4090 view.selection_ranges(cx),
4091 vec![
4092 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4093 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4094 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4095 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4096 ]
4097 );
4098 });
4099 }
4100
4101 #[gpui::test]
4102 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4103 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4104 let settings = EditorSettings::test(&cx);
4105 let view = cx
4106 .add_window(Default::default(), |cx| {
4107 build_editor(buffer.clone(), settings, cx)
4108 })
4109 .1;
4110
4111 // Cut with three selections. Clipboard text is divided into three slices.
4112 view.update(cx, |view, cx| {
4113 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4114 view.cut(&Cut, cx);
4115 assert_eq!(view.display_text(cx), "two four six ");
4116 });
4117
4118 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4119 view.update(cx, |view, cx| {
4120 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4121 view.paste(&Paste, cx);
4122 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4123 assert_eq!(
4124 view.selection_ranges(cx),
4125 &[
4126 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4127 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4128 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4129 ]
4130 );
4131 });
4132
4133 // Paste again but with only two cursors. Since the number of cursors doesn't
4134 // match the number of slices in the clipboard, the entire clipboard text
4135 // is pasted at each cursor.
4136 view.update(cx, |view, cx| {
4137 view.select_ranges(vec![0..0, 31..31], false, cx);
4138 view.handle_input(&Input("( ".into()), cx);
4139 view.paste(&Paste, cx);
4140 view.handle_input(&Input(") ".into()), cx);
4141 assert_eq!(
4142 view.display_text(cx),
4143 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4144 );
4145 });
4146
4147 view.update(cx, |view, cx| {
4148 view.select_ranges(vec![0..0], false, cx);
4149 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4150 assert_eq!(
4151 view.display_text(cx),
4152 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4153 );
4154 });
4155
4156 // Cut with three selections, one of which is full-line.
4157 view.update(cx, |view, cx| {
4158 view.select_display_ranges(
4159 &[
4160 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4161 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4162 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4163 ],
4164 cx,
4165 )
4166 .unwrap();
4167 view.cut(&Cut, cx);
4168 assert_eq!(
4169 view.display_text(cx),
4170 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4171 );
4172 });
4173
4174 // Paste with three selections, noticing how the copied selection that was full-line
4175 // gets inserted before the second cursor.
4176 view.update(cx, |view, cx| {
4177 view.select_display_ranges(
4178 &[
4179 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4180 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4181 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4182 ],
4183 cx,
4184 )
4185 .unwrap();
4186 view.paste(&Paste, cx);
4187 assert_eq!(
4188 view.display_text(cx),
4189 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4190 );
4191 assert_eq!(
4192 view.selection_ranges(cx),
4193 &[
4194 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4195 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4196 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4197 ]
4198 );
4199 });
4200
4201 // Copy with a single cursor only, which writes the whole line into the clipboard.
4202 view.update(cx, |view, cx| {
4203 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4204 .unwrap();
4205 view.copy(&Copy, cx);
4206 });
4207
4208 // Paste with three selections, noticing how the copied full-line selection is inserted
4209 // before the empty selections but replaces the selection that is non-empty.
4210 view.update(cx, |view, cx| {
4211 view.select_display_ranges(
4212 &[
4213 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4214 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4215 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4216 ],
4217 cx,
4218 )
4219 .unwrap();
4220 view.paste(&Paste, cx);
4221 assert_eq!(
4222 view.display_text(cx),
4223 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4224 );
4225 assert_eq!(
4226 view.selection_ranges(cx),
4227 &[
4228 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4229 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4230 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4231 ]
4232 );
4233 });
4234 }
4235
4236 #[gpui::test]
4237 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4238 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4239 let settings = EditorSettings::test(&cx);
4240 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4241 view.update(cx, |view, cx| {
4242 view.select_all(&SelectAll, cx);
4243 assert_eq!(
4244 view.selection_ranges(cx),
4245 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4246 );
4247 });
4248 }
4249
4250 #[gpui::test]
4251 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4252 let settings = EditorSettings::test(&cx);
4253 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4254 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4255 view.update(cx, |view, cx| {
4256 view.select_display_ranges(
4257 &[
4258 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4259 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4260 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4261 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4262 ],
4263 cx,
4264 )
4265 .unwrap();
4266 view.select_line(&SelectLine, cx);
4267 assert_eq!(
4268 view.selection_ranges(cx),
4269 vec![
4270 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4271 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4272 ]
4273 );
4274 });
4275
4276 view.update(cx, |view, cx| {
4277 view.select_line(&SelectLine, cx);
4278 assert_eq!(
4279 view.selection_ranges(cx),
4280 vec![
4281 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4282 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4283 ]
4284 );
4285 });
4286
4287 view.update(cx, |view, cx| {
4288 view.select_line(&SelectLine, cx);
4289 assert_eq!(
4290 view.selection_ranges(cx),
4291 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4292 );
4293 });
4294 }
4295
4296 #[gpui::test]
4297 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4298 let settings = EditorSettings::test(&cx);
4299 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4300 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4301 view.update(cx, |view, cx| {
4302 view.fold_ranges(
4303 vec![
4304 Point::new(0, 2)..Point::new(1, 2),
4305 Point::new(2, 3)..Point::new(4, 1),
4306 Point::new(7, 0)..Point::new(8, 4),
4307 ],
4308 cx,
4309 );
4310 view.select_display_ranges(
4311 &[
4312 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4313 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4314 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4315 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4316 ],
4317 cx,
4318 )
4319 .unwrap();
4320 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4321 });
4322
4323 view.update(cx, |view, cx| {
4324 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4325 assert_eq!(
4326 view.display_text(cx),
4327 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4328 );
4329 assert_eq!(
4330 view.selection_ranges(cx),
4331 [
4332 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4333 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4334 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4335 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4336 ]
4337 );
4338 });
4339
4340 view.update(cx, |view, cx| {
4341 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4342 .unwrap();
4343 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4344 assert_eq!(
4345 view.display_text(cx),
4346 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4347 );
4348 assert_eq!(
4349 view.selection_ranges(cx),
4350 [
4351 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4352 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4353 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4354 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4355 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4356 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4357 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4358 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4359 ]
4360 );
4361 });
4362 }
4363
4364 #[gpui::test]
4365 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4366 let settings = EditorSettings::test(&cx);
4367 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4368 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4369
4370 view.update(cx, |view, cx| {
4371 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4372 .unwrap();
4373 });
4374 view.update(cx, |view, cx| {
4375 view.add_selection_above(&AddSelectionAbove, cx);
4376 assert_eq!(
4377 view.selection_ranges(cx),
4378 vec![
4379 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4380 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4381 ]
4382 );
4383 });
4384
4385 view.update(cx, |view, cx| {
4386 view.add_selection_above(&AddSelectionAbove, cx);
4387 assert_eq!(
4388 view.selection_ranges(cx),
4389 vec![
4390 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4391 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4392 ]
4393 );
4394 });
4395
4396 view.update(cx, |view, cx| {
4397 view.add_selection_below(&AddSelectionBelow, cx);
4398 assert_eq!(
4399 view.selection_ranges(cx),
4400 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4401 );
4402 });
4403
4404 view.update(cx, |view, cx| {
4405 view.add_selection_below(&AddSelectionBelow, cx);
4406 assert_eq!(
4407 view.selection_ranges(cx),
4408 vec![
4409 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4410 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4411 ]
4412 );
4413 });
4414
4415 view.update(cx, |view, cx| {
4416 view.add_selection_below(&AddSelectionBelow, cx);
4417 assert_eq!(
4418 view.selection_ranges(cx),
4419 vec![
4420 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4421 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4422 ]
4423 );
4424 });
4425
4426 view.update(cx, |view, cx| {
4427 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4428 .unwrap();
4429 });
4430 view.update(cx, |view, cx| {
4431 view.add_selection_below(&AddSelectionBelow, cx);
4432 assert_eq!(
4433 view.selection_ranges(cx),
4434 vec![
4435 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4436 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4437 ]
4438 );
4439 });
4440
4441 view.update(cx, |view, cx| {
4442 view.add_selection_below(&AddSelectionBelow, cx);
4443 assert_eq!(
4444 view.selection_ranges(cx),
4445 vec![
4446 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4447 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4448 ]
4449 );
4450 });
4451
4452 view.update(cx, |view, cx| {
4453 view.add_selection_above(&AddSelectionAbove, cx);
4454 assert_eq!(
4455 view.selection_ranges(cx),
4456 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4457 );
4458 });
4459
4460 view.update(cx, |view, cx| {
4461 view.add_selection_above(&AddSelectionAbove, cx);
4462 assert_eq!(
4463 view.selection_ranges(cx),
4464 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4465 );
4466 });
4467
4468 view.update(cx, |view, cx| {
4469 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4470 .unwrap();
4471 view.add_selection_below(&AddSelectionBelow, cx);
4472 assert_eq!(
4473 view.selection_ranges(cx),
4474 vec![
4475 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4476 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4477 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4478 ]
4479 );
4480 });
4481
4482 view.update(cx, |view, cx| {
4483 view.add_selection_below(&AddSelectionBelow, cx);
4484 assert_eq!(
4485 view.selection_ranges(cx),
4486 vec![
4487 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4488 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4489 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4490 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4491 ]
4492 );
4493 });
4494
4495 view.update(cx, |view, cx| {
4496 view.add_selection_above(&AddSelectionAbove, cx);
4497 assert_eq!(
4498 view.selection_ranges(cx),
4499 vec![
4500 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4501 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4502 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4503 ]
4504 );
4505 });
4506
4507 view.update(cx, |view, cx| {
4508 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4509 .unwrap();
4510 });
4511 view.update(cx, |view, cx| {
4512 view.add_selection_above(&AddSelectionAbove, cx);
4513 assert_eq!(
4514 view.selection_ranges(cx),
4515 vec![
4516 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4517 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4518 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4519 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4520 ]
4521 );
4522 });
4523
4524 view.update(cx, |view, cx| {
4525 view.add_selection_below(&AddSelectionBelow, cx);
4526 assert_eq!(
4527 view.selection_ranges(cx),
4528 vec![
4529 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4530 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4531 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4532 ]
4533 );
4534 });
4535 }
4536
4537 #[gpui::test]
4538 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4539 let settings = cx.read(EditorSettings::test);
4540 let language = Some(Arc::new(Language::new(
4541 LanguageConfig::default(),
4542 tree_sitter_rust::language(),
4543 )));
4544
4545 let text = r#"
4546 use mod1::mod2::{mod3, mod4};
4547
4548 fn fn_1(param1: bool, param2: &str) {
4549 let var1 = "text";
4550 }
4551 "#
4552 .unindent();
4553
4554 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4555 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4556 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4557 .await;
4558
4559 view.update(&mut cx, |view, cx| {
4560 view.select_display_ranges(
4561 &[
4562 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4563 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4564 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4565 ],
4566 cx,
4567 )
4568 .unwrap();
4569 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4570 });
4571 assert_eq!(
4572 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4573 &[
4574 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4575 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4576 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4577 ]
4578 );
4579
4580 view.update(&mut cx, |view, cx| {
4581 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4582 });
4583 assert_eq!(
4584 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4585 &[
4586 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4587 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4588 ]
4589 );
4590
4591 view.update(&mut cx, |view, cx| {
4592 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4593 });
4594 assert_eq!(
4595 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4596 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4597 );
4598
4599 // Trying to expand the selected syntax node one more time has no effect.
4600 view.update(&mut cx, |view, cx| {
4601 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4602 });
4603 assert_eq!(
4604 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4605 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4606 );
4607
4608 view.update(&mut cx, |view, cx| {
4609 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4610 });
4611 assert_eq!(
4612 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4613 &[
4614 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4615 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4616 ]
4617 );
4618
4619 view.update(&mut cx, |view, cx| {
4620 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4621 });
4622 assert_eq!(
4623 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4624 &[
4625 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4626 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4627 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4628 ]
4629 );
4630
4631 view.update(&mut cx, |view, cx| {
4632 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4633 });
4634 assert_eq!(
4635 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4636 &[
4637 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4638 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4639 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4640 ]
4641 );
4642
4643 // Trying to shrink the selected syntax node one more time has no effect.
4644 view.update(&mut cx, |view, cx| {
4645 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4646 });
4647 assert_eq!(
4648 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4649 &[
4650 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4651 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4652 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4653 ]
4654 );
4655
4656 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4657 // a fold.
4658 view.update(&mut cx, |view, cx| {
4659 view.fold_ranges(
4660 vec![
4661 Point::new(0, 21)..Point::new(0, 24),
4662 Point::new(3, 20)..Point::new(3, 22),
4663 ],
4664 cx,
4665 );
4666 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4667 });
4668 assert_eq!(
4669 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4670 &[
4671 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4672 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4673 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4674 ]
4675 );
4676 }
4677
4678 #[gpui::test]
4679 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4680 let settings = cx.read(EditorSettings::test);
4681 let language = Some(Arc::new(Language::new(
4682 LanguageConfig {
4683 brackets: vec![
4684 BracketPair {
4685 start: "{".to_string(),
4686 end: "}".to_string(),
4687 close: true,
4688 newline: true,
4689 },
4690 BracketPair {
4691 start: "/*".to_string(),
4692 end: " */".to_string(),
4693 close: true,
4694 newline: true,
4695 },
4696 ],
4697 ..Default::default()
4698 },
4699 tree_sitter_rust::language(),
4700 )));
4701
4702 let text = r#"
4703 a
4704
4705 /
4706
4707 "#
4708 .unindent();
4709
4710 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4711 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4712 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4713 .await;
4714
4715 view.update(&mut cx, |view, cx| {
4716 view.select_display_ranges(
4717 &[
4718 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4719 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4720 ],
4721 cx,
4722 )
4723 .unwrap();
4724 view.handle_input(&Input("{".to_string()), cx);
4725 view.handle_input(&Input("{".to_string()), cx);
4726 view.handle_input(&Input("{".to_string()), cx);
4727 assert_eq!(
4728 view.text(cx),
4729 "
4730 {{{}}}
4731 {{{}}}
4732 /
4733
4734 "
4735 .unindent()
4736 );
4737
4738 view.move_right(&MoveRight, cx);
4739 view.handle_input(&Input("}".to_string()), cx);
4740 view.handle_input(&Input("}".to_string()), cx);
4741 view.handle_input(&Input("}".to_string()), cx);
4742 assert_eq!(
4743 view.text(cx),
4744 "
4745 {{{}}}}
4746 {{{}}}}
4747 /
4748
4749 "
4750 .unindent()
4751 );
4752
4753 view.undo(&Undo, cx);
4754 view.handle_input(&Input("/".to_string()), cx);
4755 view.handle_input(&Input("*".to_string()), cx);
4756 assert_eq!(
4757 view.text(cx),
4758 "
4759 /* */
4760 /* */
4761 /
4762
4763 "
4764 .unindent()
4765 );
4766
4767 view.undo(&Undo, cx);
4768 view.select_display_ranges(
4769 &[
4770 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4771 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4772 ],
4773 cx,
4774 )
4775 .unwrap();
4776 view.handle_input(&Input("*".to_string()), cx);
4777 assert_eq!(
4778 view.text(cx),
4779 "
4780 a
4781
4782 /*
4783 *
4784 "
4785 .unindent()
4786 );
4787 });
4788 }
4789
4790 #[gpui::test]
4791 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
4792 let settings = cx.read(EditorSettings::test);
4793 let language = Some(Arc::new(Language::new(
4794 LanguageConfig {
4795 brackets: vec![
4796 BracketPair {
4797 start: "{".to_string(),
4798 end: "}".to_string(),
4799 close: true,
4800 newline: true,
4801 },
4802 BracketPair {
4803 start: "/* ".to_string(),
4804 end: " */".to_string(),
4805 close: true,
4806 newline: true,
4807 },
4808 ],
4809 ..Default::default()
4810 },
4811 tree_sitter_rust::language(),
4812 )));
4813
4814 let text = concat!(
4815 "{ }\n", // Suppress rustfmt
4816 " x\n", //
4817 " /* */\n", //
4818 "x\n", //
4819 "{{} }\n", //
4820 );
4821
4822 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4823 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4824 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4825 .await;
4826
4827 view.update(&mut cx, |view, cx| {
4828 view.select_display_ranges(
4829 &[
4830 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4831 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4832 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4833 ],
4834 cx,
4835 )
4836 .unwrap();
4837 view.newline(&Newline, cx);
4838
4839 assert_eq!(
4840 view.buffer().read(cx).text(),
4841 concat!(
4842 "{ \n", // Suppress rustfmt
4843 "\n", //
4844 "}\n", //
4845 " x\n", //
4846 " /* \n", //
4847 " \n", //
4848 " */\n", //
4849 "x\n", //
4850 "{{} \n", //
4851 "}\n", //
4852 )
4853 );
4854 });
4855 }
4856
4857 impl Editor {
4858 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
4859 self.selections_in_range(
4860 self.selection_set_id,
4861 DisplayPoint::zero()..self.max_point(cx),
4862 cx,
4863 )
4864 .collect::<Vec<_>>()
4865 }
4866 }
4867
4868 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
4869 let point = DisplayPoint::new(row as u32, column as u32);
4870 point..point
4871 }
4872
4873 fn build_editor(
4874 buffer: ModelHandle<Buffer>,
4875 settings: EditorSettings,
4876 cx: &mut ViewContext<Editor>,
4877 ) -> Editor {
4878 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
4879 }
4880}
4881
4882trait RangeExt<T> {
4883 fn sorted(&self) -> Range<T>;
4884 fn to_inclusive(&self) -> RangeInclusive<T>;
4885}
4886
4887impl<T: Ord + Clone> RangeExt<T> for Range<T> {
4888 fn sorted(&self) -> Self {
4889 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
4890 }
4891
4892 fn to_inclusive(&self) -> RangeInclusive<T> {
4893 self.start.clone()..=self.end.clone()
4894 }
4895}