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