1pub mod display_map;
2mod element;
3pub mod movement;
4
5#[cfg(test)]
6mod test;
7
8use buffer::rope::TextDimension;
9use clock::ReplicaId;
10use display_map::*;
11pub use display_map::{DisplayPoint, DisplayRow};
12pub use element::*;
13use gpui::{
14 action,
15 geometry::vector::{vec2f, Vector2F},
16 keymap::Binding,
17 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
18 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
19};
20use language::*;
21use serde::{Deserialize, Serialize};
22use smallvec::SmallVec;
23use smol::Timer;
24use std::{
25 cell::RefCell,
26 cmp::{self, Ordering},
27 collections::HashMap,
28 iter, mem,
29 ops::{Range, RangeInclusive},
30 rc::Rc,
31 sync::Arc,
32 time::Duration,
33};
34use sum_tree::Bias;
35use theme::{DiagnosticStyle, EditorStyle, SyntaxTheme};
36use util::post_inc;
37
38const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
39const MAX_LINE_LEN: usize = 1024;
40
41action!(Cancel);
42action!(Backspace);
43action!(Delete);
44action!(Input, String);
45action!(Newline);
46action!(Tab);
47action!(DeleteLine);
48action!(DeleteToPreviousWordBoundary);
49action!(DeleteToNextWordBoundary);
50action!(DeleteToBeginningOfLine);
51action!(DeleteToEndOfLine);
52action!(CutToEndOfLine);
53action!(DuplicateLine);
54action!(MoveLineUp);
55action!(MoveLineDown);
56action!(Cut);
57action!(Copy);
58action!(Paste);
59action!(Undo);
60action!(Redo);
61action!(MoveUp);
62action!(MoveDown);
63action!(MoveLeft);
64action!(MoveRight);
65action!(MoveToPreviousWordBoundary);
66action!(MoveToNextWordBoundary);
67action!(MoveToBeginningOfLine);
68action!(MoveToEndOfLine);
69action!(MoveToBeginning);
70action!(MoveToEnd);
71action!(SelectUp);
72action!(SelectDown);
73action!(SelectLeft);
74action!(SelectRight);
75action!(SelectToPreviousWordBoundary);
76action!(SelectToNextWordBoundary);
77action!(SelectToBeginningOfLine, bool);
78action!(SelectToEndOfLine);
79action!(SelectToBeginning);
80action!(SelectToEnd);
81action!(SelectAll);
82action!(SelectLine);
83action!(SplitSelectionIntoLines);
84action!(AddSelectionAbove);
85action!(AddSelectionBelow);
86action!(SelectLargerSyntaxNode);
87action!(SelectSmallerSyntaxNode);
88action!(MoveToEnclosingBracket);
89action!(ShowNextDiagnostic);
90action!(PageUp);
91action!(PageDown);
92action!(Fold);
93action!(Unfold);
94action!(FoldSelectedRanges);
95action!(Scroll, Vector2F);
96action!(Select, SelectPhase);
97
98pub fn init(cx: &mut MutableAppContext) {
99 cx.add_bindings(vec![
100 Binding::new("escape", Cancel, Some("Editor")),
101 Binding::new("backspace", Backspace, Some("Editor")),
102 Binding::new("ctrl-h", Backspace, Some("Editor")),
103 Binding::new("delete", Delete, Some("Editor")),
104 Binding::new("ctrl-d", Delete, Some("Editor")),
105 Binding::new("enter", Newline, Some("Editor && mode == full")),
106 Binding::new(
107 "alt-enter",
108 Input("\n".into()),
109 Some("Editor && mode == auto_height"),
110 ),
111 Binding::new("tab", Tab, Some("Editor")),
112 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
113 Binding::new(
114 "alt-backspace",
115 DeleteToPreviousWordBoundary,
116 Some("Editor"),
117 ),
118 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
119 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
120 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
121 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
122 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
123 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
124 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
125 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
126 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
127 Binding::new("cmd-x", Cut, Some("Editor")),
128 Binding::new("cmd-c", Copy, Some("Editor")),
129 Binding::new("cmd-v", Paste, Some("Editor")),
130 Binding::new("cmd-z", Undo, Some("Editor")),
131 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
132 Binding::new("up", MoveUp, Some("Editor")),
133 Binding::new("down", MoveDown, Some("Editor")),
134 Binding::new("left", MoveLeft, Some("Editor")),
135 Binding::new("right", MoveRight, Some("Editor")),
136 Binding::new("ctrl-p", MoveUp, Some("Editor")),
137 Binding::new("ctrl-n", MoveDown, Some("Editor")),
138 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
139 Binding::new("ctrl-f", MoveRight, Some("Editor")),
140 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
141 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
142 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
143 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
144 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
145 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
146 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
147 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
148 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
149 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
150 Binding::new("shift-up", SelectUp, Some("Editor")),
151 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
152 Binding::new("shift-down", SelectDown, Some("Editor")),
153 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
154 Binding::new("shift-left", SelectLeft, Some("Editor")),
155 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
156 Binding::new("shift-right", SelectRight, Some("Editor")),
157 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
158 Binding::new(
159 "alt-shift-left",
160 SelectToPreviousWordBoundary,
161 Some("Editor"),
162 ),
163 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
164 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
165 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
166 Binding::new(
167 "cmd-shift-left",
168 SelectToBeginningOfLine(true),
169 Some("Editor"),
170 ),
171 Binding::new(
172 "ctrl-shift-A",
173 SelectToBeginningOfLine(true),
174 Some("Editor"),
175 ),
176 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
177 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
178 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
179 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
180 Binding::new("cmd-a", SelectAll, Some("Editor")),
181 Binding::new("cmd-l", SelectLine, Some("Editor")),
182 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
183 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
184 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
185 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
186 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
187 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
188 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
189 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
190 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
191 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
192 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
193 Binding::new("pageup", PageUp, Some("Editor")),
194 Binding::new("pagedown", PageDown, Some("Editor")),
195 Binding::new("alt-cmd-[", Fold, Some("Editor")),
196 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
197 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
198 ]);
199
200 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
201 cx.add_action(Editor::select);
202 cx.add_action(Editor::cancel);
203 cx.add_action(Editor::handle_input);
204 cx.add_action(Editor::newline);
205 cx.add_action(Editor::backspace);
206 cx.add_action(Editor::delete);
207 cx.add_action(Editor::tab);
208 cx.add_action(Editor::delete_line);
209 cx.add_action(Editor::delete_to_previous_word_boundary);
210 cx.add_action(Editor::delete_to_next_word_boundary);
211 cx.add_action(Editor::delete_to_beginning_of_line);
212 cx.add_action(Editor::delete_to_end_of_line);
213 cx.add_action(Editor::cut_to_end_of_line);
214 cx.add_action(Editor::duplicate_line);
215 cx.add_action(Editor::move_line_up);
216 cx.add_action(Editor::move_line_down);
217 cx.add_action(Editor::cut);
218 cx.add_action(Editor::copy);
219 cx.add_action(Editor::paste);
220 cx.add_action(Editor::undo);
221 cx.add_action(Editor::redo);
222 cx.add_action(Editor::move_up);
223 cx.add_action(Editor::move_down);
224 cx.add_action(Editor::move_left);
225 cx.add_action(Editor::move_right);
226 cx.add_action(Editor::move_to_previous_word_boundary);
227 cx.add_action(Editor::move_to_next_word_boundary);
228 cx.add_action(Editor::move_to_beginning_of_line);
229 cx.add_action(Editor::move_to_end_of_line);
230 cx.add_action(Editor::move_to_beginning);
231 cx.add_action(Editor::move_to_end);
232 cx.add_action(Editor::select_up);
233 cx.add_action(Editor::select_down);
234 cx.add_action(Editor::select_left);
235 cx.add_action(Editor::select_right);
236 cx.add_action(Editor::select_to_previous_word_boundary);
237 cx.add_action(Editor::select_to_next_word_boundary);
238 cx.add_action(Editor::select_to_beginning_of_line);
239 cx.add_action(Editor::select_to_end_of_line);
240 cx.add_action(Editor::select_to_beginning);
241 cx.add_action(Editor::select_to_end);
242 cx.add_action(Editor::select_all);
243 cx.add_action(Editor::select_line);
244 cx.add_action(Editor::split_selection_into_lines);
245 cx.add_action(Editor::add_selection_above);
246 cx.add_action(Editor::add_selection_below);
247 cx.add_action(Editor::select_larger_syntax_node);
248 cx.add_action(Editor::select_smaller_syntax_node);
249 cx.add_action(Editor::move_to_enclosing_bracket);
250 cx.add_action(Editor::show_next_diagnostic);
251 cx.add_action(Editor::page_up);
252 cx.add_action(Editor::page_down);
253 cx.add_action(Editor::fold);
254 cx.add_action(Editor::unfold);
255 cx.add_action(Editor::fold_selected_ranges);
256}
257
258trait SelectionExt {
259 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
260 fn spanned_rows(
261 &self,
262 include_end_if_at_line_start: bool,
263 map: &DisplayMapSnapshot,
264 ) -> SpannedRows;
265}
266
267struct SpannedRows {
268 buffer_rows: Range<u32>,
269 display_rows: Range<u32>,
270}
271
272#[derive(Clone, Debug)]
273pub enum SelectPhase {
274 Begin {
275 position: DisplayPoint,
276 add: bool,
277 },
278 Update {
279 position: DisplayPoint,
280 scroll_position: Vector2F,
281 },
282 End,
283}
284
285#[derive(Copy, Clone, PartialEq, Eq)]
286pub enum EditorMode {
287 SingleLine,
288 AutoHeight { max_lines: usize },
289 Full,
290}
291
292#[derive(Clone)]
293pub struct EditorSettings {
294 pub tab_size: usize,
295 pub style: EditorStyle,
296}
297
298pub struct Editor {
299 handle: WeakViewHandle<Self>,
300 buffer: ModelHandle<Buffer>,
301 display_map: ModelHandle<DisplayMap>,
302 selection_set_id: SelectionSetId,
303 pending_selection: Option<Selection<Anchor>>,
304 next_selection_id: usize,
305 add_selections_state: Option<AddSelectionsState>,
306 autoclose_stack: Vec<BracketPairState>,
307 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
308 active_diagnostics: Option<ActiveDiagnosticGroup>,
309 scroll_position: Vector2F,
310 scroll_top_anchor: Anchor,
311 autoscroll_requested: bool,
312 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
313 focused: bool,
314 show_local_cursors: bool,
315 blink_epoch: usize,
316 blinking_paused: bool,
317 mode: EditorMode,
318 placeholder_text: Option<Arc<str>>,
319}
320
321pub struct Snapshot {
322 pub mode: EditorMode,
323 pub display_snapshot: DisplayMapSnapshot,
324 pub placeholder_text: Option<Arc<str>>,
325 is_focused: bool,
326 scroll_position: Vector2F,
327 scroll_top_anchor: Anchor,
328}
329
330struct AddSelectionsState {
331 above: bool,
332 stack: Vec<usize>,
333}
334
335#[derive(Debug)]
336struct BracketPairState {
337 ranges: AnchorRangeSet,
338 pair: BracketPair,
339}
340
341#[derive(Debug)]
342struct ActiveDiagnosticGroup {
343 primary_range: Range<Anchor>,
344 primary_message: String,
345 blocks: HashMap<BlockId, Diagnostic>,
346 is_valid: bool,
347 update_count: usize,
348}
349
350#[derive(Serialize, Deserialize)]
351struct ClipboardSelection {
352 len: usize,
353 is_entire_line: bool,
354}
355
356impl Editor {
357 pub fn single_line(
358 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
359 cx: &mut ViewContext<Self>,
360 ) -> Self {
361 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
362 let mut view = Self::for_buffer(buffer, build_settings, cx);
363 view.mode = EditorMode::SingleLine;
364 view
365 }
366
367 pub fn auto_height(
368 max_lines: usize,
369 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
370 cx: &mut ViewContext<Self>,
371 ) -> Self {
372 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
373 let mut view = Self::for_buffer(buffer, build_settings, cx);
374 view.mode = EditorMode::AutoHeight { max_lines };
375 view
376 }
377
378 pub fn for_buffer(
379 buffer: ModelHandle<Buffer>,
380 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
381 cx: &mut ViewContext<Self>,
382 ) -> Self {
383 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
384 }
385
386 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
387 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
388 clone.scroll_position = self.scroll_position;
389 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
390 clone
391 }
392
393 pub fn new(
394 buffer: ModelHandle<Buffer>,
395 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
396 cx: &mut ViewContext<Self>,
397 ) -> Self {
398 let settings = build_settings.borrow_mut()(cx);
399 let display_map = cx.add_model(|cx| {
400 DisplayMap::new(
401 buffer.clone(),
402 settings.tab_size,
403 settings.style.text.font_id,
404 settings.style.text.font_size,
405 None,
406 cx,
407 )
408 });
409 cx.observe(&buffer, Self::on_buffer_changed).detach();
410 cx.subscribe(&buffer, Self::on_buffer_event).detach();
411 cx.observe(&display_map, Self::on_display_map_changed)
412 .detach();
413
414 let mut next_selection_id = 0;
415 let selection_set_id = buffer.update(cx, |buffer, cx| {
416 buffer.add_selection_set(
417 &[Selection {
418 id: post_inc(&mut next_selection_id),
419 start: 0,
420 end: 0,
421 reversed: false,
422 goal: SelectionGoal::None,
423 }],
424 cx,
425 )
426 });
427 Self {
428 handle: cx.handle().downgrade(),
429 buffer,
430 display_map,
431 selection_set_id,
432 pending_selection: None,
433 next_selection_id,
434 add_selections_state: None,
435 autoclose_stack: Default::default(),
436 select_larger_syntax_node_stack: Vec::new(),
437 active_diagnostics: None,
438 build_settings,
439 scroll_position: Vector2F::zero(),
440 scroll_top_anchor: Anchor::min(),
441 autoscroll_requested: false,
442 focused: false,
443 show_local_cursors: false,
444 blink_epoch: 0,
445 blinking_paused: false,
446 mode: EditorMode::Full,
447 placeholder_text: None,
448 }
449 }
450
451 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
452 self.buffer.read(cx).replica_id()
453 }
454
455 pub fn buffer(&self) -> &ModelHandle<Buffer> {
456 &self.buffer
457 }
458
459 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
460 Snapshot {
461 mode: self.mode,
462 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
463 scroll_position: self.scroll_position,
464 scroll_top_anchor: self.scroll_top_anchor.clone(),
465 placeholder_text: self.placeholder_text.clone(),
466 is_focused: self
467 .handle
468 .upgrade(cx)
469 .map_or(false, |handle| handle.is_focused(cx)),
470 }
471 }
472
473 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
474 self.buffer.read(cx).language()
475 }
476
477 pub fn set_placeholder_text(
478 &mut self,
479 placeholder_text: impl Into<Arc<str>>,
480 cx: &mut ViewContext<Self>,
481 ) {
482 self.placeholder_text = Some(placeholder_text.into());
483 cx.notify();
484 }
485
486 fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
487 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
488 let scroll_top_buffer_offset =
489 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
490 self.scroll_top_anchor = self
491 .buffer
492 .read(cx)
493 .anchor_at(scroll_top_buffer_offset, Bias::Right);
494 self.scroll_position = vec2f(
495 scroll_position.x(),
496 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
497 );
498
499 debug_assert_eq!(
500 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
501 scroll_position
502 );
503
504 cx.notify();
505 }
506
507 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
508 if max < self.scroll_position.x() {
509 self.scroll_position.set_x(max);
510 true
511 } else {
512 false
513 }
514 }
515
516 pub fn autoscroll_vertically(
517 &mut self,
518 viewport_height: f32,
519 line_height: f32,
520 cx: &mut ViewContext<Self>,
521 ) -> bool {
522 let visible_lines = viewport_height / line_height;
523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
524 let mut scroll_position =
525 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
526 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
527 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
528 } else {
529 display_map.max_point().row().saturating_sub(1) as f32
530 };
531 if scroll_position.y() > max_scroll_top {
532 scroll_position.set_y(max_scroll_top);
533 self.set_scroll_position(scroll_position, cx);
534 }
535
536 if self.autoscroll_requested {
537 self.autoscroll_requested = false;
538 } else {
539 return false;
540 }
541
542 let mut selections = self.selections::<Point>(cx).peekable();
543 let first_cursor_top = selections
544 .peek()
545 .unwrap()
546 .head()
547 .to_display_point(&display_map)
548 .row() as f32;
549 let last_cursor_bottom = selections
550 .last()
551 .unwrap()
552 .head()
553 .to_display_point(&display_map)
554 .row() as f32
555 + 1.0;
556
557 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
558 0.
559 } else {
560 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
561 .floor()
562 .min(3.0)
563 };
564 if margin < 0.0 {
565 return false;
566 }
567
568 let target_top = (first_cursor_top - margin).max(0.0);
569 let target_bottom = last_cursor_bottom + margin;
570 let start_row = scroll_position.y();
571 let end_row = start_row + visible_lines;
572
573 if target_top < start_row {
574 scroll_position.set_y(target_top);
575 self.set_scroll_position(scroll_position, cx);
576 } else if target_bottom >= end_row {
577 scroll_position.set_y(target_bottom - visible_lines);
578 self.set_scroll_position(scroll_position, cx);
579 }
580
581 true
582 }
583
584 pub fn autoscroll_horizontally(
585 &mut self,
586 start_row: u32,
587 viewport_width: f32,
588 scroll_width: f32,
589 max_glyph_width: f32,
590 layouts: &[text_layout::Line],
591 cx: &mut ViewContext<Self>,
592 ) -> bool {
593 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
594 let selections = self.selections::<Point>(cx);
595 let mut target_left = std::f32::INFINITY;
596 let mut target_right = 0.0_f32;
597 for selection in selections {
598 let head = selection.head().to_display_point(&display_map);
599 let start_column = head.column().saturating_sub(3);
600 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
601 target_left = target_left
602 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
603 target_right = target_right.max(
604 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
605 + max_glyph_width,
606 );
607 }
608 target_right = target_right.min(scroll_width);
609
610 if target_right - target_left > viewport_width {
611 return false;
612 }
613
614 let scroll_left = self.scroll_position.x() * max_glyph_width;
615 let scroll_right = scroll_left + viewport_width;
616
617 if target_left < scroll_left {
618 self.scroll_position.set_x(target_left / max_glyph_width);
619 true
620 } else if target_right > scroll_right {
621 self.scroll_position
622 .set_x((target_right - viewport_width) / max_glyph_width);
623 true
624 } else {
625 false
626 }
627 }
628
629 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
630 match phase {
631 SelectPhase::Begin { position, add } => self.begin_selection(*position, *add, cx),
632 SelectPhase::Update {
633 position,
634 scroll_position,
635 } => self.update_selection(*position, *scroll_position, cx),
636 SelectPhase::End => self.end_selection(cx),
637 }
638 }
639
640 fn begin_selection(&mut self, position: DisplayPoint, add: bool, cx: &mut ViewContext<Self>) {
641 if !self.focused {
642 cx.focus_self();
643 cx.emit(Event::Activate);
644 }
645
646 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
647 let buffer = self.buffer.read(cx);
648 let cursor = buffer.anchor_before(position.to_point(&display_map));
649 let selection = Selection {
650 id: post_inc(&mut self.next_selection_id),
651 start: cursor.clone(),
652 end: cursor,
653 reversed: false,
654 goal: SelectionGoal::None,
655 };
656
657 if !add {
658 self.update_selections::<usize>(Vec::new(), false, cx);
659 }
660 self.pending_selection = Some(selection);
661
662 cx.notify();
663 }
664
665 fn update_selection(
666 &mut self,
667 position: DisplayPoint,
668 scroll_position: Vector2F,
669 cx: &mut ViewContext<Self>,
670 ) {
671 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
672 if let Some(pending_selection) = self.pending_selection.as_mut() {
673 let buffer = self.buffer.read(cx);
674 let cursor = buffer.anchor_before(position.to_point(&display_map));
675 if cursor.cmp(&pending_selection.tail(), buffer).unwrap() < Ordering::Equal {
676 if !pending_selection.reversed {
677 pending_selection.end = pending_selection.start.clone();
678 pending_selection.reversed = true;
679 }
680 pending_selection.start = cursor;
681 } else {
682 if pending_selection.reversed {
683 pending_selection.start = pending_selection.end.clone();
684 pending_selection.reversed = false;
685 }
686 pending_selection.end = cursor;
687 }
688 } else {
689 log::error!("update_selection dispatched with no pending selection");
690 return;
691 }
692
693 self.set_scroll_position(scroll_position, cx);
694 cx.notify();
695 }
696
697 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
698 if self.pending_selection.is_some() {
699 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
700 self.update_selections(selections, false, cx);
701 }
702 }
703
704 pub fn is_selecting(&self) -> bool {
705 self.pending_selection.is_some()
706 }
707
708 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
709 if self.active_diagnostics.is_some() {
710 self.dismiss_diagnostics(cx);
711 } else if let Some(pending_selection) = self.pending_selection.take() {
712 let buffer = self.buffer.read(cx);
713 let pending_selection = Selection {
714 id: pending_selection.id,
715 start: pending_selection.start.to_point(buffer),
716 end: pending_selection.end.to_point(buffer),
717 reversed: pending_selection.reversed,
718 goal: pending_selection.goal,
719 };
720 if self.selections::<Point>(cx).next().is_none() {
721 self.update_selections(vec![pending_selection], true, cx);
722 }
723 } else {
724 let mut oldest_selection = self.oldest_selection::<usize>(cx);
725 if self.selection_count(cx) == 1 {
726 oldest_selection.start = oldest_selection.head().clone();
727 oldest_selection.end = oldest_selection.head().clone();
728 }
729 self.update_selections(vec![oldest_selection], true, cx);
730 }
731 }
732
733 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
734 where
735 I: IntoIterator<Item = Range<T>>,
736 T: ToOffset,
737 {
738 let buffer = self.buffer.read(cx);
739 let selections = ranges
740 .into_iter()
741 .map(|range| {
742 let mut start = range.start.to_offset(buffer);
743 let mut end = range.end.to_offset(buffer);
744 let reversed = if start > end {
745 mem::swap(&mut start, &mut end);
746 true
747 } else {
748 false
749 };
750 Selection {
751 id: post_inc(&mut self.next_selection_id),
752 start: start,
753 end: end,
754 reversed,
755 goal: SelectionGoal::None,
756 }
757 })
758 .collect();
759 self.update_selections(selections, autoscroll, cx);
760 }
761
762 #[cfg(test)]
763 fn select_display_ranges<'a, T>(
764 &mut self,
765 ranges: T,
766 cx: &mut ViewContext<Self>,
767 ) -> anyhow::Result<()>
768 where
769 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
770 {
771 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
772 let selections = ranges
773 .into_iter()
774 .map(|range| {
775 let mut start = range.start;
776 let mut end = range.end;
777 let reversed = if start > end {
778 mem::swap(&mut start, &mut end);
779 true
780 } else {
781 false
782 };
783 Selection {
784 id: post_inc(&mut self.next_selection_id),
785 start: start.to_point(&display_map),
786 end: end.to_point(&display_map),
787 reversed,
788 goal: SelectionGoal::None,
789 }
790 })
791 .collect();
792 self.update_selections(selections, false, cx);
793 Ok(())
794 }
795
796 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
797 let text = action.0.as_ref();
798 if !self.skip_autoclose_end(text, cx) {
799 self.start_transaction(cx);
800 self.insert(text, cx);
801 self.autoclose_pairs(cx);
802 self.end_transaction(cx);
803 }
804 }
805
806 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
807 self.start_transaction(cx);
808 let mut old_selections = SmallVec::<[_; 32]>::new();
809 {
810 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
811 let buffer = self.buffer.read(cx);
812 for selection in selections.iter() {
813 let start_point = selection.start;
814 let indent = buffer
815 .indent_column_for_line(start_point.row)
816 .min(start_point.column);
817 let start = selection.start.to_offset(buffer);
818 let end = selection.end.to_offset(buffer);
819
820 let mut insert_extra_newline = false;
821 if let Some(language) = buffer.language() {
822 let leading_whitespace_len = buffer
823 .reversed_chars_at(start)
824 .take_while(|c| c.is_whitespace() && *c != '\n')
825 .map(|c| c.len_utf8())
826 .sum::<usize>();
827
828 let trailing_whitespace_len = buffer
829 .chars_at(end)
830 .take_while(|c| c.is_whitespace() && *c != '\n')
831 .map(|c| c.len_utf8())
832 .sum::<usize>();
833
834 insert_extra_newline = language.brackets().iter().any(|pair| {
835 let pair_start = pair.start.trim_end();
836 let pair_end = pair.end.trim_start();
837
838 pair.newline
839 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
840 && buffer.contains_str_at(
841 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
842 pair_start,
843 )
844 });
845 }
846
847 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
848 }
849 }
850
851 let mut new_selections = Vec::with_capacity(old_selections.len());
852 self.buffer.update(cx, |buffer, cx| {
853 let mut delta = 0_isize;
854 let mut pending_edit: Option<PendingEdit> = None;
855 for (_, range, indent, insert_extra_newline) in &old_selections {
856 if pending_edit.as_ref().map_or(false, |pending| {
857 pending.indent != *indent
858 || pending.insert_extra_newline != *insert_extra_newline
859 }) {
860 let pending = pending_edit.take().unwrap();
861 let mut new_text = String::with_capacity(1 + pending.indent as usize);
862 new_text.push('\n');
863 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
864 if pending.insert_extra_newline {
865 new_text = new_text.repeat(2);
866 }
867 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
868 delta += pending.delta;
869 }
870
871 let start = (range.start as isize + delta) as usize;
872 let end = (range.end as isize + delta) as usize;
873 let mut text_len = *indent as usize + 1;
874 if *insert_extra_newline {
875 text_len *= 2;
876 }
877
878 let pending = pending_edit.get_or_insert_with(Default::default);
879 pending.delta += text_len as isize - (end - start) as isize;
880 pending.indent = *indent;
881 pending.insert_extra_newline = *insert_extra_newline;
882 pending.ranges.push(start..end);
883 }
884
885 let pending = pending_edit.unwrap();
886 let mut new_text = String::with_capacity(1 + pending.indent as usize);
887 new_text.push('\n');
888 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
889 if pending.insert_extra_newline {
890 new_text = new_text.repeat(2);
891 }
892 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
893
894 let mut delta = 0_isize;
895 new_selections.extend(old_selections.into_iter().map(
896 |(id, range, indent, insert_extra_newline)| {
897 let start = (range.start as isize + delta) as usize;
898 let end = (range.end as isize + delta) as usize;
899 let text_before_cursor_len = indent as usize + 1;
900 let cursor = start + text_before_cursor_len;
901 let text_len = if insert_extra_newline {
902 text_before_cursor_len * 2
903 } else {
904 text_before_cursor_len
905 };
906 delta += text_len as isize - (end - start) as isize;
907 Selection {
908 id,
909 start: cursor,
910 end: cursor,
911 reversed: false,
912 goal: SelectionGoal::None,
913 }
914 },
915 ))
916 });
917
918 self.update_selections(new_selections, true, cx);
919 self.end_transaction(cx);
920
921 #[derive(Default)]
922 struct PendingEdit {
923 indent: u32,
924 insert_extra_newline: bool,
925 delta: isize,
926 ranges: SmallVec<[Range<usize>; 32]>,
927 }
928 }
929
930 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
931 self.start_transaction(cx);
932 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
933 let mut new_selections = Vec::new();
934 self.buffer.update(cx, |buffer, cx| {
935 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
936 buffer.edit_with_autoindent(edit_ranges, text, cx);
937 let text_len = text.len() as isize;
938 let mut delta = 0_isize;
939 new_selections = old_selections
940 .into_iter()
941 .map(|selection| {
942 let start = selection.start as isize;
943 let end = selection.end as isize;
944 let cursor = (start + delta + text_len) as usize;
945 let deleted_count = end - start;
946 delta += text_len - deleted_count;
947 Selection {
948 id: selection.id,
949 start: cursor,
950 end: cursor,
951 reversed: false,
952 goal: SelectionGoal::None,
953 }
954 })
955 .collect();
956 });
957
958 self.update_selections(new_selections, true, cx);
959 self.end_transaction(cx);
960 }
961
962 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
963 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
964 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
965 let autoclose_pair = buffer.language().and_then(|language| {
966 let first_selection_start = selections.first().unwrap().start;
967 let pair = language.brackets().iter().find(|pair| {
968 buffer.contains_str_at(
969 first_selection_start.saturating_sub(pair.start.len()),
970 &pair.start,
971 )
972 });
973 pair.and_then(|pair| {
974 let should_autoclose = selections[1..].iter().all(|selection| {
975 buffer.contains_str_at(
976 selection.start.saturating_sub(pair.start.len()),
977 &pair.start,
978 )
979 });
980
981 if should_autoclose {
982 Some(pair.clone())
983 } else {
984 None
985 }
986 })
987 });
988
989 autoclose_pair.and_then(|pair| {
990 let selection_ranges = selections
991 .iter()
992 .map(|selection| {
993 let start = selection.start.to_offset(&*buffer);
994 start..start
995 })
996 .collect::<SmallVec<[_; 32]>>();
997
998 buffer.edit(selection_ranges, &pair.end, cx);
999
1000 if pair.end.len() == 1 {
1001 let mut delta = 0;
1002 Some(BracketPairState {
1003 ranges: buffer.anchor_range_set(selections.iter().map(move |selection| {
1004 let offset = selection.start + delta;
1005 delta += 1;
1006 (offset, Bias::Left)..(offset, Bias::Right)
1007 })),
1008 pair,
1009 })
1010 } else {
1011 None
1012 }
1013 })
1014 });
1015 self.autoclose_stack.extend(new_autoclose_pair_state);
1016 }
1017
1018 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1019 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1020 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1021 autoclose_pair_state
1022 } else {
1023 return false;
1024 };
1025 if text != autoclose_pair_state.pair.end {
1026 return false;
1027 }
1028
1029 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1030
1031 let buffer = self.buffer.read(cx);
1032 if old_selections
1033 .iter()
1034 .zip(autoclose_pair_state.ranges.ranges::<usize, _>(buffer))
1035 .all(|(selection, autoclose_range)| {
1036 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1037 selection.is_empty() && selection.start == autoclose_range_end
1038 })
1039 {
1040 let new_selections = old_selections
1041 .into_iter()
1042 .map(|selection| {
1043 let cursor = selection.start + 1;
1044 Selection {
1045 id: selection.id,
1046 start: cursor,
1047 end: cursor,
1048 reversed: false,
1049 goal: SelectionGoal::None,
1050 }
1051 })
1052 .collect();
1053 self.autoclose_stack.pop();
1054 self.update_selections(new_selections, true, cx);
1055 true
1056 } else {
1057 false
1058 }
1059 }
1060
1061 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1062 self.start_transaction(cx);
1063 self.select_all(&SelectAll, cx);
1064 self.insert("", cx);
1065 self.end_transaction(cx);
1066 }
1067
1068 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1069 self.start_transaction(cx);
1070 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1071 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1072 for selection in &mut selections {
1073 if selection.is_empty() {
1074 let head = selection.head().to_display_point(&display_map);
1075 let cursor = movement::left(&display_map, head)
1076 .unwrap()
1077 .to_point(&display_map);
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 delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1088 self.start_transaction(cx);
1089 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1090 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1091 for selection in &mut selections {
1092 if selection.is_empty() {
1093 let head = selection.head().to_display_point(&display_map);
1094 let cursor = movement::right(&display_map, head)
1095 .unwrap()
1096 .to_point(&display_map);
1097 selection.set_head(cursor);
1098 selection.goal = SelectionGoal::None;
1099 }
1100 }
1101 self.update_selections(selections, true, cx);
1102 self.insert(&"", cx);
1103 self.end_transaction(cx);
1104 }
1105
1106 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1107 self.start_transaction(cx);
1108 let tab_size = self.build_settings.borrow()(cx).tab_size;
1109 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1110 self.buffer.update(cx, |buffer, cx| {
1111 let mut last_indented_row = None;
1112 for selection in &mut selections {
1113 if selection.is_empty() {
1114 let char_column = buffer
1115 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1116 .count();
1117 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1118 buffer.edit(
1119 [selection.start..selection.start],
1120 " ".repeat(chars_to_next_tab_stop),
1121 cx,
1122 );
1123 selection.start.column += chars_to_next_tab_stop as u32;
1124 selection.end = selection.start;
1125 } else {
1126 for row in selection.start.row..=selection.end.row {
1127 if last_indented_row != Some(row) {
1128 let char_column = buffer.indent_column_for_line(row) as usize;
1129 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1130 let row_start = Point::new(row, 0);
1131 buffer.edit(
1132 [row_start..row_start],
1133 " ".repeat(chars_to_next_tab_stop),
1134 cx,
1135 );
1136 last_indented_row = Some(row);
1137 }
1138 }
1139 }
1140 }
1141 });
1142
1143 self.update_selections(selections, true, cx);
1144 self.end_transaction(cx);
1145 }
1146
1147 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1148 self.start_transaction(cx);
1149
1150 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1152 let buffer = self.buffer.read(cx);
1153
1154 let mut row_delta = 0;
1155 let mut new_cursors = Vec::new();
1156 let mut edit_ranges = Vec::new();
1157 let mut selections = selections.iter().peekable();
1158 while let Some(selection) = selections.next() {
1159 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1160 let goal_display_column = selection.head().to_display_point(&display_map).column();
1161
1162 // Accumulate contiguous regions of rows that we want to delete.
1163 while let Some(next_selection) = selections.peek() {
1164 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1165 if next_rows.start <= rows.end {
1166 rows.end = next_rows.end;
1167 selections.next().unwrap();
1168 } else {
1169 break;
1170 }
1171 }
1172
1173 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1174 let edit_end;
1175 let cursor_buffer_row;
1176 if buffer.max_point().row >= rows.end {
1177 // If there's a line after the range, delete the \n from the end of the row range
1178 // and position the cursor on the next line.
1179 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1180 cursor_buffer_row = rows.start;
1181 } else {
1182 // If there isn't a line after the range, delete the \n from the line before the
1183 // start of the row range and position the cursor there.
1184 edit_start = edit_start.saturating_sub(1);
1185 edit_end = buffer.len();
1186 cursor_buffer_row = rows.start.saturating_sub(1);
1187 }
1188
1189 let mut cursor =
1190 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1191 *cursor.column_mut() =
1192 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1193 row_delta += rows.len() as u32;
1194
1195 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1196 edit_ranges.push(edit_start..edit_end);
1197 }
1198
1199 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1200 let new_selections = new_cursors
1201 .into_iter()
1202 .map(|(id, cursor)| Selection {
1203 id,
1204 start: cursor,
1205 end: cursor,
1206 reversed: false,
1207 goal: SelectionGoal::None,
1208 })
1209 .collect();
1210 self.buffer
1211 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1212 self.update_selections(new_selections, true, cx);
1213 self.end_transaction(cx);
1214 }
1215
1216 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1217 self.start_transaction(cx);
1218
1219 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1220 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1221 let buffer = self.buffer.read(cx);
1222
1223 let mut edits = Vec::new();
1224 let mut selections_iter = selections.iter().peekable();
1225 while let Some(selection) = selections_iter.next() {
1226 // Avoid duplicating the same lines twice.
1227 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1228
1229 while let Some(next_selection) = selections_iter.peek() {
1230 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1231 if next_rows.start <= rows.end - 1 {
1232 rows.end = next_rows.end;
1233 selections_iter.next().unwrap();
1234 } else {
1235 break;
1236 }
1237 }
1238
1239 // Copy the text from the selected row region and splice it at the start of the region.
1240 let start = Point::new(rows.start, 0);
1241 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1242 let text = buffer
1243 .text_for_range(start..end)
1244 .chain(Some("\n"))
1245 .collect::<String>();
1246 edits.push((start, text, rows.len() as u32));
1247 }
1248
1249 let mut edits_iter = edits.iter().peekable();
1250 let mut row_delta = 0;
1251 for selection in selections.iter_mut() {
1252 while let Some((point, _, line_count)) = edits_iter.peek() {
1253 if *point <= selection.start {
1254 row_delta += line_count;
1255 edits_iter.next();
1256 } else {
1257 break;
1258 }
1259 }
1260 selection.start.row += row_delta;
1261 selection.end.row += row_delta;
1262 }
1263
1264 self.buffer.update(cx, |buffer, cx| {
1265 for (point, text, _) in edits.into_iter().rev() {
1266 buffer.edit(Some(point..point), text, cx);
1267 }
1268 });
1269
1270 self.update_selections(selections, true, cx);
1271 self.end_transaction(cx);
1272 }
1273
1274 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1275 self.start_transaction(cx);
1276
1277 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1278 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1279 let buffer = self.buffer.read(cx);
1280
1281 let mut edits = Vec::new();
1282 let mut new_selection_ranges = Vec::new();
1283 let mut old_folds = Vec::new();
1284 let mut new_folds = Vec::new();
1285
1286 let mut selections = selections.iter().peekable();
1287 let mut contiguous_selections = Vec::new();
1288 while let Some(selection) = selections.next() {
1289 // Accumulate contiguous regions of rows that we want to move.
1290 contiguous_selections.push(selection.point_range(buffer));
1291 let SpannedRows {
1292 mut buffer_rows,
1293 mut display_rows,
1294 } = selection.spanned_rows(false, &display_map);
1295
1296 while let Some(next_selection) = selections.peek() {
1297 let SpannedRows {
1298 buffer_rows: next_buffer_rows,
1299 display_rows: next_display_rows,
1300 } = next_selection.spanned_rows(false, &display_map);
1301 if next_buffer_rows.start <= buffer_rows.end {
1302 buffer_rows.end = next_buffer_rows.end;
1303 display_rows.end = next_display_rows.end;
1304 contiguous_selections.push(next_selection.point_range(buffer));
1305 selections.next().unwrap();
1306 } else {
1307 break;
1308 }
1309 }
1310
1311 // Cut the text from the selected rows and paste it at the start of the previous line.
1312 if display_rows.start != 0 {
1313 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1314 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1315 .to_offset(buffer);
1316
1317 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1318 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1319 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1320
1321 let mut text = String::new();
1322 text.extend(buffer.text_for_range(start..end));
1323 text.push('\n');
1324 edits.push((
1325 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1326 text,
1327 ));
1328 edits.push((start - 1..end, String::new()));
1329
1330 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1331
1332 // Move selections up.
1333 for range in &mut contiguous_selections {
1334 range.start.row -= row_delta;
1335 range.end.row -= row_delta;
1336 }
1337
1338 // Move folds up.
1339 old_folds.push(start..end);
1340 for fold in display_map.folds_in_range(start..end) {
1341 let mut start = fold.start.to_point(buffer);
1342 let mut end = fold.end.to_point(buffer);
1343 start.row -= row_delta;
1344 end.row -= row_delta;
1345 new_folds.push(start..end);
1346 }
1347 }
1348
1349 new_selection_ranges.extend(contiguous_selections.drain(..));
1350 }
1351
1352 self.unfold_ranges(old_folds, cx);
1353 self.buffer.update(cx, |buffer, cx| {
1354 for (range, text) in edits.into_iter().rev() {
1355 buffer.edit(Some(range), text, cx);
1356 }
1357 });
1358 self.fold_ranges(new_folds, cx);
1359 self.select_ranges(new_selection_ranges, true, cx);
1360
1361 self.end_transaction(cx);
1362 }
1363
1364 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1365 self.start_transaction(cx);
1366
1367 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1368 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1369 let buffer = self.buffer.read(cx);
1370
1371 let mut edits = Vec::new();
1372 let mut new_selection_ranges = Vec::new();
1373 let mut old_folds = Vec::new();
1374 let mut new_folds = Vec::new();
1375
1376 let mut selections = selections.iter().peekable();
1377 let mut contiguous_selections = Vec::new();
1378 while let Some(selection) = selections.next() {
1379 // Accumulate contiguous regions of rows that we want to move.
1380 contiguous_selections.push(selection.point_range(buffer));
1381 let SpannedRows {
1382 mut buffer_rows,
1383 mut display_rows,
1384 } = selection.spanned_rows(false, &display_map);
1385 while let Some(next_selection) = selections.peek() {
1386 let SpannedRows {
1387 buffer_rows: next_buffer_rows,
1388 display_rows: next_display_rows,
1389 } = next_selection.spanned_rows(false, &display_map);
1390 if next_buffer_rows.start <= buffer_rows.end {
1391 buffer_rows.end = next_buffer_rows.end;
1392 display_rows.end = next_display_rows.end;
1393 contiguous_selections.push(next_selection.point_range(buffer));
1394 selections.next().unwrap();
1395 } else {
1396 break;
1397 }
1398 }
1399
1400 // Cut the text from the selected rows and paste it at the end of the next line.
1401 if display_rows.end <= display_map.max_point().row() {
1402 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1403 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1404 .to_offset(buffer);
1405
1406 let next_row_display_end =
1407 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1408 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1409 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1410
1411 let mut text = String::new();
1412 text.push('\n');
1413 text.extend(buffer.text_for_range(start..end));
1414 edits.push((start..end + 1, String::new()));
1415 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1416
1417 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1418
1419 // Move selections down.
1420 for range in &mut contiguous_selections {
1421 range.start.row += row_delta;
1422 range.end.row += row_delta;
1423 }
1424
1425 // Move folds down.
1426 old_folds.push(start..end);
1427 for fold in display_map.folds_in_range(start..end) {
1428 let mut start = fold.start.to_point(buffer);
1429 let mut end = fold.end.to_point(buffer);
1430 start.row += row_delta;
1431 end.row += row_delta;
1432 new_folds.push(start..end);
1433 }
1434 }
1435
1436 new_selection_ranges.extend(contiguous_selections.drain(..));
1437 }
1438
1439 self.unfold_ranges(old_folds, cx);
1440 self.buffer.update(cx, |buffer, cx| {
1441 for (range, text) in edits.into_iter().rev() {
1442 buffer.edit(Some(range), text, cx);
1443 }
1444 });
1445 self.fold_ranges(new_folds, cx);
1446 self.select_ranges(new_selection_ranges, true, cx);
1447
1448 self.end_transaction(cx);
1449 }
1450
1451 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1452 self.start_transaction(cx);
1453 let mut text = String::new();
1454 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1455 let mut clipboard_selections = Vec::with_capacity(selections.len());
1456 {
1457 let buffer = self.buffer.read(cx);
1458 let max_point = buffer.max_point();
1459 for selection in &mut selections {
1460 let is_entire_line = selection.is_empty();
1461 if is_entire_line {
1462 selection.start = Point::new(selection.start.row, 0);
1463 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1464 }
1465 let mut len = 0;
1466 for chunk in buffer.text_for_range(selection.start..selection.end) {
1467 text.push_str(chunk);
1468 len += chunk.len();
1469 }
1470 clipboard_selections.push(ClipboardSelection {
1471 len,
1472 is_entire_line,
1473 });
1474 }
1475 }
1476 self.update_selections(selections, true, cx);
1477 self.insert("", cx);
1478 self.end_transaction(cx);
1479
1480 cx.as_mut()
1481 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1482 }
1483
1484 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1485 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1486 let buffer = self.buffer.read(cx);
1487 let max_point = buffer.max_point();
1488 let mut text = String::new();
1489 let mut clipboard_selections = Vec::with_capacity(selections.len());
1490 for selection in selections.iter() {
1491 let mut start = selection.start;
1492 let mut end = selection.end;
1493 let is_entire_line = selection.is_empty();
1494 if is_entire_line {
1495 start = Point::new(start.row, 0);
1496 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1497 }
1498 let mut len = 0;
1499 for chunk in buffer.text_for_range(start..end) {
1500 text.push_str(chunk);
1501 len += chunk.len();
1502 }
1503 clipboard_selections.push(ClipboardSelection {
1504 len,
1505 is_entire_line,
1506 });
1507 }
1508
1509 cx.as_mut()
1510 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1511 }
1512
1513 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1514 if let Some(item) = cx.as_mut().read_from_clipboard() {
1515 let clipboard_text = item.text();
1516 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1517 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1518 let all_selections_were_entire_line =
1519 clipboard_selections.iter().all(|s| s.is_entire_line);
1520 if clipboard_selections.len() != selections.len() {
1521 clipboard_selections.clear();
1522 }
1523
1524 let mut delta = 0_isize;
1525 let mut start_offset = 0;
1526 for (i, selection) in selections.iter_mut().enumerate() {
1527 let to_insert;
1528 let entire_line;
1529 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1530 let end_offset = start_offset + clipboard_selection.len;
1531 to_insert = &clipboard_text[start_offset..end_offset];
1532 entire_line = clipboard_selection.is_entire_line;
1533 start_offset = end_offset
1534 } else {
1535 to_insert = clipboard_text.as_str();
1536 entire_line = all_selections_were_entire_line;
1537 }
1538
1539 selection.start = (selection.start as isize + delta) as usize;
1540 selection.end = (selection.end as isize + delta) as usize;
1541
1542 self.buffer.update(cx, |buffer, cx| {
1543 // If the corresponding selection was empty when this slice of the
1544 // clipboard text was written, then the entire line containing the
1545 // selection was copied. If this selection is also currently empty,
1546 // then paste the line before the current line of the buffer.
1547 let range = if selection.is_empty() && entire_line {
1548 let column = selection.start.to_point(&*buffer).column as usize;
1549 let line_start = selection.start - column;
1550 line_start..line_start
1551 } else {
1552 selection.start..selection.end
1553 };
1554
1555 delta += to_insert.len() as isize - range.len() as isize;
1556 buffer.edit([range], to_insert, cx);
1557 selection.start += to_insert.len();
1558 selection.end = selection.start;
1559 });
1560 }
1561 self.update_selections(selections, true, cx);
1562 } else {
1563 self.insert(clipboard_text, cx);
1564 }
1565 }
1566 }
1567
1568 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1569 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1570 self.request_autoscroll(cx);
1571 }
1572
1573 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1574 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1575 self.request_autoscroll(cx);
1576 }
1577
1578 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1579 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1580 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1581 for selection in &mut selections {
1582 let start = selection.start.to_display_point(&display_map);
1583 let end = selection.end.to_display_point(&display_map);
1584
1585 if start != end {
1586 selection.end = selection.start.clone();
1587 } else {
1588 let cursor = movement::left(&display_map, start)
1589 .unwrap()
1590 .to_point(&display_map);
1591 selection.start = cursor.clone();
1592 selection.end = cursor;
1593 }
1594 selection.reversed = false;
1595 selection.goal = SelectionGoal::None;
1596 }
1597 self.update_selections(selections, true, cx);
1598 }
1599
1600 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1601 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1602 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1603 for selection in &mut selections {
1604 let head = selection.head().to_display_point(&display_map);
1605 let cursor = movement::left(&display_map, head)
1606 .unwrap()
1607 .to_point(&display_map);
1608 selection.set_head(cursor);
1609 selection.goal = SelectionGoal::None;
1610 }
1611 self.update_selections(selections, true, cx);
1612 }
1613
1614 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1615 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1616 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1617 for selection in &mut selections {
1618 let start = selection.start.to_display_point(&display_map);
1619 let end = selection.end.to_display_point(&display_map);
1620
1621 if start != end {
1622 selection.start = selection.end.clone();
1623 } else {
1624 let cursor = movement::right(&display_map, end)
1625 .unwrap()
1626 .to_point(&display_map);
1627 selection.start = cursor;
1628 selection.end = cursor;
1629 }
1630 selection.reversed = false;
1631 selection.goal = SelectionGoal::None;
1632 }
1633 self.update_selections(selections, true, cx);
1634 }
1635
1636 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1637 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1638 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1639 for selection in &mut selections {
1640 let head = selection.head().to_display_point(&display_map);
1641 let cursor = movement::right(&display_map, head)
1642 .unwrap()
1643 .to_point(&display_map);
1644 selection.set_head(cursor);
1645 selection.goal = SelectionGoal::None;
1646 }
1647 self.update_selections(selections, true, cx);
1648 }
1649
1650 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1651 if matches!(self.mode, EditorMode::SingleLine) {
1652 cx.propagate_action();
1653 return;
1654 }
1655
1656 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1657 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1658 for selection in &mut selections {
1659 let start = selection.start.to_display_point(&display_map);
1660 let end = selection.end.to_display_point(&display_map);
1661 if start != end {
1662 selection.goal = SelectionGoal::None;
1663 }
1664
1665 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1666 let cursor = start.to_point(&display_map);
1667 selection.start = cursor;
1668 selection.end = cursor;
1669 selection.goal = goal;
1670 selection.reversed = false;
1671 }
1672 self.update_selections(selections, true, cx);
1673 }
1674
1675 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1676 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1677 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1678 for selection in &mut selections {
1679 let head = selection.head().to_display_point(&display_map);
1680 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1681 let cursor = head.to_point(&display_map);
1682 selection.set_head(cursor);
1683 selection.goal = goal;
1684 }
1685 self.update_selections(selections, true, cx);
1686 }
1687
1688 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1689 if matches!(self.mode, EditorMode::SingleLine) {
1690 cx.propagate_action();
1691 return;
1692 }
1693
1694 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1695 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1696 for selection in &mut selections {
1697 let start = selection.start.to_display_point(&display_map);
1698 let end = selection.end.to_display_point(&display_map);
1699 if start != end {
1700 selection.goal = SelectionGoal::None;
1701 }
1702
1703 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1704 let cursor = start.to_point(&display_map);
1705 selection.start = cursor;
1706 selection.end = cursor;
1707 selection.goal = goal;
1708 selection.reversed = false;
1709 }
1710 self.update_selections(selections, true, cx);
1711 }
1712
1713 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1714 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1715 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1716 for selection in &mut selections {
1717 let head = selection.head().to_display_point(&display_map);
1718 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1719 let cursor = head.to_point(&display_map);
1720 selection.set_head(cursor);
1721 selection.goal = goal;
1722 }
1723 self.update_selections(selections, true, cx);
1724 }
1725
1726 pub fn move_to_previous_word_boundary(
1727 &mut self,
1728 _: &MoveToPreviousWordBoundary,
1729 cx: &mut ViewContext<Self>,
1730 ) {
1731 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1732 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1733 for selection in &mut selections {
1734 let head = selection.head().to_display_point(&display_map);
1735 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1736 let cursor = new_head.to_point(&display_map);
1737 selection.start = cursor.clone();
1738 selection.end = cursor;
1739 selection.reversed = false;
1740 selection.goal = SelectionGoal::None;
1741 }
1742 self.update_selections(selections, true, cx);
1743 }
1744
1745 pub fn select_to_previous_word_boundary(
1746 &mut self,
1747 _: &SelectToPreviousWordBoundary,
1748 cx: &mut ViewContext<Self>,
1749 ) {
1750 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1751 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1752 for selection in &mut selections {
1753 let head = selection.head().to_display_point(&display_map);
1754 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1755 let cursor = new_head.to_point(&display_map);
1756 selection.set_head(cursor);
1757 selection.goal = SelectionGoal::None;
1758 }
1759 self.update_selections(selections, true, cx);
1760 }
1761
1762 pub fn delete_to_previous_word_boundary(
1763 &mut self,
1764 _: &DeleteToPreviousWordBoundary,
1765 cx: &mut ViewContext<Self>,
1766 ) {
1767 self.start_transaction(cx);
1768 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1769 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1770 for selection in &mut selections {
1771 if selection.is_empty() {
1772 let head = selection.head().to_display_point(&display_map);
1773 let new_head = movement::prev_word_boundary(&display_map, head).unwrap();
1774 let cursor = new_head.to_point(&display_map);
1775 selection.set_head(cursor);
1776 selection.goal = SelectionGoal::None;
1777 }
1778 }
1779 self.update_selections(selections, true, cx);
1780 self.insert("", cx);
1781 self.end_transaction(cx);
1782 }
1783
1784 pub fn move_to_next_word_boundary(
1785 &mut self,
1786 _: &MoveToNextWordBoundary,
1787 cx: &mut ViewContext<Self>,
1788 ) {
1789 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1790 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1791 for selection in &mut selections {
1792 let head = selection.head().to_display_point(&display_map);
1793 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1794 let cursor = new_head.to_point(&display_map);
1795 selection.start = cursor;
1796 selection.end = cursor;
1797 selection.reversed = false;
1798 selection.goal = SelectionGoal::None;
1799 }
1800 self.update_selections(selections, true, cx);
1801 }
1802
1803 pub fn select_to_next_word_boundary(
1804 &mut self,
1805 _: &SelectToNextWordBoundary,
1806 cx: &mut ViewContext<Self>,
1807 ) {
1808 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1809 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1810 for selection in &mut selections {
1811 let head = selection.head().to_display_point(&display_map);
1812 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1813 let cursor = new_head.to_point(&display_map);
1814 selection.set_head(cursor);
1815 selection.goal = SelectionGoal::None;
1816 }
1817 self.update_selections(selections, true, cx);
1818 }
1819
1820 pub fn delete_to_next_word_boundary(
1821 &mut self,
1822 _: &DeleteToNextWordBoundary,
1823 cx: &mut ViewContext<Self>,
1824 ) {
1825 self.start_transaction(cx);
1826 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1827 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1828 for selection in &mut selections {
1829 if selection.is_empty() {
1830 let head = selection.head().to_display_point(&display_map);
1831 let new_head = movement::next_word_boundary(&display_map, head).unwrap();
1832 let cursor = new_head.to_point(&display_map);
1833 selection.set_head(cursor);
1834 selection.goal = SelectionGoal::None;
1835 }
1836 }
1837 self.update_selections(selections, true, cx);
1838 self.insert("", cx);
1839 self.end_transaction(cx);
1840 }
1841
1842 pub fn move_to_beginning_of_line(
1843 &mut self,
1844 _: &MoveToBeginningOfLine,
1845 cx: &mut ViewContext<Self>,
1846 ) {
1847 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1848 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1849 for selection in &mut selections {
1850 let head = selection.head().to_display_point(&display_map);
1851 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1852 let cursor = new_head.to_point(&display_map);
1853 selection.start = cursor;
1854 selection.end = cursor;
1855 selection.reversed = false;
1856 selection.goal = SelectionGoal::None;
1857 }
1858 self.update_selections(selections, true, cx);
1859 }
1860
1861 pub fn select_to_beginning_of_line(
1862 &mut self,
1863 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1864 cx: &mut ViewContext<Self>,
1865 ) {
1866 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1867 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1868 for selection in &mut selections {
1869 let head = selection.head().to_display_point(&display_map);
1870 let new_head = movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1871 selection.set_head(new_head.to_point(&display_map));
1872 selection.goal = SelectionGoal::None;
1873 }
1874 self.update_selections(selections, true, cx);
1875 }
1876
1877 pub fn delete_to_beginning_of_line(
1878 &mut self,
1879 _: &DeleteToBeginningOfLine,
1880 cx: &mut ViewContext<Self>,
1881 ) {
1882 self.start_transaction(cx);
1883 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1884 self.backspace(&Backspace, cx);
1885 self.end_transaction(cx);
1886 }
1887
1888 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1889 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1890 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1891 {
1892 for selection in &mut selections {
1893 let head = selection.head().to_display_point(&display_map);
1894 let new_head = movement::line_end(&display_map, head).unwrap();
1895 let anchor = new_head.to_point(&display_map);
1896 selection.start = anchor.clone();
1897 selection.end = anchor;
1898 selection.reversed = false;
1899 selection.goal = SelectionGoal::None;
1900 }
1901 }
1902 self.update_selections(selections, true, cx);
1903 }
1904
1905 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1906 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1907 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1908 for selection in &mut selections {
1909 let head = selection.head().to_display_point(&display_map);
1910 let new_head = movement::line_end(&display_map, head).unwrap();
1911 selection.set_head(new_head.to_point(&display_map));
1912 selection.goal = SelectionGoal::None;
1913 }
1914 self.update_selections(selections, true, cx);
1915 }
1916
1917 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
1918 self.start_transaction(cx);
1919 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1920 self.delete(&Delete, cx);
1921 self.end_transaction(cx);
1922 }
1923
1924 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
1925 self.start_transaction(cx);
1926 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1927 self.cut(&Cut, cx);
1928 self.end_transaction(cx);
1929 }
1930
1931 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
1932 let selection = Selection {
1933 id: post_inc(&mut self.next_selection_id),
1934 start: 0,
1935 end: 0,
1936 reversed: false,
1937 goal: SelectionGoal::None,
1938 };
1939 self.update_selections(vec![selection], true, cx);
1940 }
1941
1942 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
1943 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
1944 selection.set_head(Point::zero());
1945 self.update_selections(vec![selection], true, cx);
1946 }
1947
1948 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
1949 let buffer = self.buffer.read(cx);
1950 let cursor = buffer.len();
1951 let selection = Selection {
1952 id: post_inc(&mut self.next_selection_id),
1953 start: cursor,
1954 end: cursor,
1955 reversed: false,
1956 goal: SelectionGoal::None,
1957 };
1958 self.update_selections(vec![selection], true, cx);
1959 }
1960
1961 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
1962 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
1963 selection.set_head(self.buffer.read(cx).len());
1964 self.update_selections(vec![selection], true, cx);
1965 }
1966
1967 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
1968 let selection = Selection {
1969 id: post_inc(&mut self.next_selection_id),
1970 start: 0,
1971 end: self.buffer.read(cx).len(),
1972 reversed: false,
1973 goal: SelectionGoal::None,
1974 };
1975 self.update_selections(vec![selection], false, cx);
1976 }
1977
1978 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
1979 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1980 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1981 let buffer = self.buffer.read(cx);
1982 let max_point = buffer.max_point();
1983 for selection in &mut selections {
1984 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
1985 selection.start = Point::new(rows.start, 0);
1986 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
1987 selection.reversed = false;
1988 }
1989 self.update_selections(selections, true, cx);
1990 }
1991
1992 pub fn split_selection_into_lines(
1993 &mut self,
1994 _: &SplitSelectionIntoLines,
1995 cx: &mut ViewContext<Self>,
1996 ) {
1997 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1998 let buffer = self.buffer.read(cx);
1999
2000 let mut to_unfold = Vec::new();
2001 let mut new_selections = Vec::new();
2002 for selection in selections.iter() {
2003 if selection.start.row != selection.end.row {
2004 new_selections.push(Selection {
2005 id: post_inc(&mut self.next_selection_id),
2006 start: selection.start,
2007 end: selection.start,
2008 reversed: false,
2009 goal: SelectionGoal::None,
2010 });
2011 }
2012 for row in selection.start.row + 1..selection.end.row {
2013 let cursor = Point::new(row, buffer.line_len(row));
2014 new_selections.push(Selection {
2015 id: post_inc(&mut self.next_selection_id),
2016 start: cursor,
2017 end: cursor,
2018 reversed: false,
2019 goal: SelectionGoal::None,
2020 });
2021 }
2022 new_selections.push(Selection {
2023 id: selection.id,
2024 start: selection.end,
2025 end: selection.end,
2026 reversed: false,
2027 goal: SelectionGoal::None,
2028 });
2029 to_unfold.push(selection.start..selection.end);
2030 }
2031 self.unfold_ranges(to_unfold, cx);
2032 self.update_selections(new_selections, true, cx);
2033 }
2034
2035 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2036 self.add_selection(true, cx);
2037 }
2038
2039 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2040 self.add_selection(false, cx);
2041 }
2042
2043 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2044 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2045 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2046 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2047 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2048 let range = oldest_selection.display_range(&display_map).sorted();
2049 let columns = cmp::min(range.start.column(), range.end.column())
2050 ..cmp::max(range.start.column(), range.end.column());
2051
2052 selections.clear();
2053 let mut stack = Vec::new();
2054 for row in range.start.row()..=range.end.row() {
2055 if let Some(selection) = self.build_columnar_selection(
2056 &display_map,
2057 row,
2058 &columns,
2059 oldest_selection.reversed,
2060 ) {
2061 stack.push(selection.id);
2062 selections.push(selection);
2063 }
2064 }
2065
2066 if above {
2067 stack.reverse();
2068 }
2069
2070 AddSelectionsState { above, stack }
2071 });
2072
2073 let last_added_selection = *state.stack.last().unwrap();
2074 let mut new_selections = Vec::new();
2075 if above == state.above {
2076 let end_row = if above {
2077 0
2078 } else {
2079 display_map.max_point().row()
2080 };
2081
2082 'outer: for selection in selections {
2083 if selection.id == last_added_selection {
2084 let range = selection.display_range(&display_map).sorted();
2085 debug_assert_eq!(range.start.row(), range.end.row());
2086 let mut row = range.start.row();
2087 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2088 {
2089 start..end
2090 } else {
2091 cmp::min(range.start.column(), range.end.column())
2092 ..cmp::max(range.start.column(), range.end.column())
2093 };
2094
2095 while row != end_row {
2096 if above {
2097 row -= 1;
2098 } else {
2099 row += 1;
2100 }
2101
2102 if let Some(new_selection) = self.build_columnar_selection(
2103 &display_map,
2104 row,
2105 &columns,
2106 selection.reversed,
2107 ) {
2108 state.stack.push(new_selection.id);
2109 if above {
2110 new_selections.push(new_selection);
2111 new_selections.push(selection);
2112 } else {
2113 new_selections.push(selection);
2114 new_selections.push(new_selection);
2115 }
2116
2117 continue 'outer;
2118 }
2119 }
2120 }
2121
2122 new_selections.push(selection);
2123 }
2124 } else {
2125 new_selections = selections;
2126 new_selections.retain(|s| s.id != last_added_selection);
2127 state.stack.pop();
2128 }
2129
2130 self.update_selections(new_selections, true, cx);
2131 if state.stack.len() > 1 {
2132 self.add_selections_state = Some(state);
2133 }
2134 }
2135
2136 pub fn select_larger_syntax_node(
2137 &mut self,
2138 _: &SelectLargerSyntaxNode,
2139 cx: &mut ViewContext<Self>,
2140 ) {
2141 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2142 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2143 let buffer = self.buffer.read(cx);
2144
2145 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2146 let mut selected_larger_node = false;
2147 let mut new_selections = old_selections
2148 .iter()
2149 .map(|selection| {
2150 let old_range = selection.start..selection.end;
2151 let mut new_range = old_range.clone();
2152 while let Some(containing_range) =
2153 buffer.range_for_syntax_ancestor(new_range.clone())
2154 {
2155 new_range = containing_range;
2156 if !display_map.intersects_fold(new_range.start)
2157 && !display_map.intersects_fold(new_range.end)
2158 {
2159 break;
2160 }
2161 }
2162
2163 selected_larger_node |= new_range != old_range;
2164 Selection {
2165 id: selection.id,
2166 start: new_range.start,
2167 end: new_range.end,
2168 goal: SelectionGoal::None,
2169 reversed: selection.reversed,
2170 }
2171 })
2172 .collect::<Vec<_>>();
2173
2174 if selected_larger_node {
2175 stack.push(old_selections);
2176 new_selections.sort_unstable_by_key(|selection| selection.start);
2177 self.update_selections(new_selections, true, cx);
2178 }
2179 self.select_larger_syntax_node_stack = stack;
2180 }
2181
2182 pub fn select_smaller_syntax_node(
2183 &mut self,
2184 _: &SelectSmallerSyntaxNode,
2185 cx: &mut ViewContext<Self>,
2186 ) {
2187 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2188 if let Some(selections) = stack.pop() {
2189 self.update_selections(selections.to_vec(), true, cx);
2190 }
2191 self.select_larger_syntax_node_stack = stack;
2192 }
2193
2194 pub fn move_to_enclosing_bracket(
2195 &mut self,
2196 _: &MoveToEnclosingBracket,
2197 cx: &mut ViewContext<Self>,
2198 ) {
2199 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2200 let buffer = self.buffer.read(cx.as_ref());
2201 for selection in &mut selections {
2202 if let Some((open_range, close_range)) =
2203 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2204 {
2205 let close_range = close_range.to_inclusive();
2206 let destination = if close_range.contains(&selection.start)
2207 && close_range.contains(&selection.end)
2208 {
2209 open_range.end
2210 } else {
2211 *close_range.start()
2212 };
2213 selection.start = destination;
2214 selection.end = destination;
2215 }
2216 }
2217
2218 self.update_selections(selections, true, cx);
2219 }
2220
2221 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2222 let selection = self.newest_selection::<usize>(cx);
2223 let buffer = self.buffer.read(cx.as_ref());
2224 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2225 active_diagnostics
2226 .primary_range
2227 .to_offset(buffer)
2228 .to_inclusive()
2229 });
2230 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2231 if active_primary_range.contains(&selection.head()) {
2232 *active_primary_range.end()
2233 } else {
2234 selection.head()
2235 }
2236 } else {
2237 selection.head()
2238 };
2239
2240 loop {
2241 let next_group = buffer
2242 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2243 .find_map(|(range, diagnostic)| {
2244 if diagnostic.is_primary
2245 && Some(range.end) != active_primary_range.as_ref().map(|r| *r.end())
2246 {
2247 Some((range, diagnostic.group_id))
2248 } else {
2249 None
2250 }
2251 });
2252
2253 if let Some((primary_range, group_id)) = next_group {
2254 self.activate_diagnostics(group_id, cx);
2255 self.update_selections(
2256 vec![Selection {
2257 id: selection.id,
2258 start: primary_range.start,
2259 end: primary_range.start,
2260 reversed: false,
2261 goal: SelectionGoal::None,
2262 }],
2263 true,
2264 cx,
2265 );
2266 break;
2267 } else if search_start == 0 {
2268 break;
2269 } else {
2270 // Cycle around to the start of the buffer.
2271 search_start = 0;
2272 }
2273 }
2274 }
2275
2276 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2277 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2278 let buffer = self.buffer.read(cx);
2279 let update_count = buffer.diagnostics_update_count();
2280 if update_count > active_diagnostics.update_count {
2281 active_diagnostics.update_count = update_count;
2282 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2283 let is_valid = buffer
2284 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2285 .any(|(range, diagnostic)| {
2286 diagnostic.is_primary
2287 && range.start == primary_range_start
2288 && diagnostic.message == active_diagnostics.primary_message
2289 });
2290
2291 if is_valid != active_diagnostics.is_valid {
2292 active_diagnostics.is_valid = is_valid;
2293 let mut new_styles = HashMap::new();
2294 for (block_id, diagnostic) in &active_diagnostics.blocks {
2295 let severity = diagnostic.severity;
2296 let message_len = diagnostic.message.len();
2297 new_styles.insert(
2298 *block_id,
2299 (
2300 Some({
2301 let build_settings = self.build_settings.clone();
2302 move |cx: &AppContext| {
2303 let settings = build_settings.borrow()(cx);
2304 vec![(
2305 message_len,
2306 diagnostic_style(severity, is_valid, &settings.style)
2307 .text
2308 .into(),
2309 )]
2310 }
2311 }),
2312 Some({
2313 let build_settings = self.build_settings.clone();
2314 move |cx: &AppContext| {
2315 let settings = build_settings.borrow()(cx);
2316 diagnostic_style(severity, is_valid, &settings.style).block
2317 }
2318 }),
2319 ),
2320 );
2321 }
2322 self.display_map
2323 .update(cx, |display_map, _| display_map.restyle_blocks(new_styles));
2324 }
2325 }
2326 }
2327 }
2328
2329 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2330 self.dismiss_diagnostics(cx);
2331 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2332 let buffer = self.buffer.read(cx);
2333
2334 let update_count = buffer.diagnostics_update_count();
2335 let mut primary_range = None;
2336 let mut primary_message = None;
2337 let mut group_end = Point::zero();
2338 let diagnostic_group = buffer
2339 .diagnostic_group::<Point>(group_id)
2340 .map(|(range, diagnostic)| {
2341 if range.end > group_end {
2342 group_end = range.end;
2343 }
2344 if diagnostic.is_primary {
2345 primary_range = Some(range.clone());
2346 primary_message = Some(diagnostic.message.clone());
2347 }
2348 (range, diagnostic.clone())
2349 })
2350 .collect::<Vec<_>>();
2351 let primary_range = primary_range.unwrap();
2352 let primary_message = primary_message.unwrap();
2353 let primary_range =
2354 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2355
2356 let blocks = display_map
2357 .insert_blocks(
2358 diagnostic_group.iter().map(|(range, diagnostic)| {
2359 let build_settings = self.build_settings.clone();
2360 let message_len = diagnostic.message.len();
2361 let severity = diagnostic.severity;
2362 BlockProperties {
2363 position: range.start,
2364 text: diagnostic.message.as_str(),
2365 build_runs: Some(Arc::new({
2366 let build_settings = build_settings.clone();
2367 move |cx| {
2368 let settings = build_settings.borrow()(cx);
2369 vec![(
2370 message_len,
2371 diagnostic_style(severity, true, &settings.style)
2372 .text
2373 .into(),
2374 )]
2375 }
2376 })),
2377 build_style: Some(Arc::new({
2378 let build_settings = build_settings.clone();
2379 move |cx| {
2380 let settings = build_settings.borrow()(cx);
2381 diagnostic_style(severity, true, &settings.style).block
2382 }
2383 })),
2384 disposition: BlockDisposition::Below,
2385 }
2386 }),
2387 cx,
2388 )
2389 .into_iter()
2390 .zip(
2391 diagnostic_group
2392 .into_iter()
2393 .map(|(_, diagnostic)| diagnostic),
2394 )
2395 .collect();
2396
2397 Some(ActiveDiagnosticGroup {
2398 primary_range,
2399 primary_message,
2400 blocks,
2401 is_valid: true,
2402 update_count,
2403 })
2404 });
2405 }
2406
2407 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2408 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2409 self.display_map.update(cx, |display_map, cx| {
2410 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2411 });
2412 cx.notify();
2413 }
2414 }
2415
2416 fn build_columnar_selection(
2417 &mut self,
2418 display_map: &DisplayMapSnapshot,
2419 row: u32,
2420 columns: &Range<u32>,
2421 reversed: bool,
2422 ) -> Option<Selection<Point>> {
2423 let is_empty = columns.start == columns.end;
2424 let line_len = display_map.line_len(row);
2425 if columns.start < line_len || (is_empty && columns.start == line_len) {
2426 let start = DisplayPoint::new(row, columns.start);
2427 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2428 Some(Selection {
2429 id: post_inc(&mut self.next_selection_id),
2430 start: start.to_point(display_map),
2431 end: end.to_point(display_map),
2432 reversed,
2433 goal: SelectionGoal::ColumnRange {
2434 start: columns.start,
2435 end: columns.end,
2436 },
2437 })
2438 } else {
2439 None
2440 }
2441 }
2442
2443 pub fn active_selection_sets<'a>(
2444 &'a self,
2445 cx: &'a AppContext,
2446 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2447 let buffer = self.buffer.read(cx);
2448 let replica_id = buffer.replica_id();
2449 buffer
2450 .selection_sets()
2451 .filter(move |(set_id, set)| {
2452 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2453 })
2454 .map(|(set_id, _)| *set_id)
2455 }
2456
2457 pub fn selections_in_range<'a>(
2458 &'a self,
2459 set_id: SelectionSetId,
2460 range: Range<DisplayPoint>,
2461 cx: &'a mut MutableAppContext,
2462 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2463 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2464 let buffer = self.buffer.read(cx);
2465 let selections = self
2466 .selection_set(cx)
2467 .selections::<Point, _>(buffer)
2468 .collect::<Vec<_>>();
2469 let start = range.start.to_point(&display_map);
2470 let start_index = self.selection_insertion_index(&selections, start);
2471 let pending_selection = if set_id.replica_id == self.buffer.read(cx).replica_id() {
2472 self.pending_selection.as_ref().and_then(|pending| {
2473 let mut selection_start = pending.start.to_display_point(&display_map);
2474 let mut selection_end = pending.end.to_display_point(&display_map);
2475 if pending.reversed {
2476 mem::swap(&mut selection_start, &mut selection_end);
2477 }
2478 if selection_start <= range.end || selection_end <= range.end {
2479 Some(selection_start..selection_end)
2480 } else {
2481 None
2482 }
2483 })
2484 } else {
2485 None
2486 };
2487 selections
2488 .into_iter()
2489 .skip(start_index)
2490 .map(move |s| s.display_range(&display_map))
2491 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2492 .chain(pending_selection)
2493 }
2494
2495 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2496 match selections.binary_search_by_key(&start, |probe| probe.start) {
2497 Ok(index) => index,
2498 Err(index) => {
2499 if index > 0 && selections[index - 1].end > start {
2500 index - 1
2501 } else {
2502 index
2503 }
2504 }
2505 }
2506 }
2507
2508 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2509 where
2510 D: 'a + TextDimension<'a> + Ord,
2511 {
2512 let buffer = self.buffer.read(cx);
2513 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2514 let mut pending_selection = self.pending_selection(cx);
2515 iter::from_fn(move || {
2516 if let Some(pending) = pending_selection.as_mut() {
2517 while let Some(next_selection) = selections.peek() {
2518 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2519 let next_selection = selections.next().unwrap();
2520 if next_selection.start < pending.start {
2521 pending.start = next_selection.start;
2522 }
2523 if next_selection.end > pending.end {
2524 pending.end = next_selection.end;
2525 }
2526 } else if next_selection.end < pending.start {
2527 return selections.next();
2528 } else {
2529 break;
2530 }
2531 }
2532
2533 pending_selection.take()
2534 } else {
2535 selections.next()
2536 }
2537 })
2538 }
2539
2540 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2541 where
2542 D: 'a + TextDimension<'a>,
2543 {
2544 let buffer = self.buffer.read(cx);
2545 self.pending_selection.as_ref().map(|selection| Selection {
2546 id: selection.id,
2547 start: selection.start.summary::<D, _>(buffer),
2548 end: selection.end.summary::<D, _>(buffer),
2549 reversed: selection.reversed,
2550 goal: selection.goal,
2551 })
2552 }
2553
2554 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2555 let mut selection_count = self.selection_set(cx).len();
2556 if self.pending_selection.is_some() {
2557 selection_count += 1;
2558 }
2559 selection_count
2560 }
2561
2562 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2563 where
2564 T: 'a + TextDimension<'a>,
2565 {
2566 let buffer = self.buffer.read(cx);
2567 self.selection_set(cx)
2568 .oldest_selection(buffer)
2569 .or_else(|| self.pending_selection(cx))
2570 .unwrap()
2571 }
2572
2573 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2574 where
2575 T: 'a + TextDimension<'a>,
2576 {
2577 let buffer = self.buffer.read(cx);
2578 self.pending_selection(cx)
2579 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2580 .unwrap()
2581 }
2582
2583 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2584 self.buffer
2585 .read(cx)
2586 .selection_set(self.selection_set_id)
2587 .unwrap()
2588 }
2589
2590 fn update_selections<T>(
2591 &mut self,
2592 mut selections: Vec<Selection<T>>,
2593 autoscroll: bool,
2594 cx: &mut ViewContext<Self>,
2595 ) where
2596 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2597 {
2598 // Merge overlapping selections.
2599 let buffer = self.buffer.read(cx);
2600 let mut i = 1;
2601 while i < selections.len() {
2602 if selections[i - 1].end >= selections[i].start {
2603 let removed = selections.remove(i);
2604 if removed.start < selections[i - 1].start {
2605 selections[i - 1].start = removed.start;
2606 }
2607 if removed.end > selections[i - 1].end {
2608 selections[i - 1].end = removed.end;
2609 }
2610 } else {
2611 i += 1;
2612 }
2613 }
2614
2615 self.pending_selection = None;
2616 self.add_selections_state = None;
2617 self.select_larger_syntax_node_stack.clear();
2618 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2619 let all_selections_inside_autoclose_ranges =
2620 if selections.len() == autoclose_pair_state.ranges.len() {
2621 selections
2622 .iter()
2623 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2624 .all(|(selection, autoclose_range)| {
2625 let head = selection.head().to_point(&*buffer);
2626 autoclose_range.start <= head && autoclose_range.end >= head
2627 })
2628 } else {
2629 false
2630 };
2631
2632 if all_selections_inside_autoclose_ranges {
2633 break;
2634 } else {
2635 self.autoclose_stack.pop();
2636 }
2637 }
2638
2639 if autoscroll {
2640 self.request_autoscroll(cx);
2641 }
2642 self.pause_cursor_blinking(cx);
2643
2644 self.buffer.update(cx, |buffer, cx| {
2645 buffer
2646 .update_selection_set(self.selection_set_id, &selections, cx)
2647 .unwrap();
2648 });
2649 }
2650
2651 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2652 self.autoscroll_requested = true;
2653 cx.notify();
2654 }
2655
2656 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2657 self.end_selection(cx);
2658 self.buffer.update(cx, |buffer, _| {
2659 buffer
2660 .start_transaction(Some(self.selection_set_id))
2661 .unwrap()
2662 });
2663 }
2664
2665 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2666 self.buffer.update(cx, |buffer, cx| {
2667 buffer
2668 .end_transaction(Some(self.selection_set_id), cx)
2669 .unwrap()
2670 });
2671 }
2672
2673 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2674 log::info!("Editor::page_up");
2675 }
2676
2677 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2678 log::info!("Editor::page_down");
2679 }
2680
2681 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2682 let mut fold_ranges = Vec::new();
2683
2684 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2685 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2686 for selection in selections {
2687 let range = selection.display_range(&display_map).sorted();
2688 let buffer_start_row = range.start.to_point(&display_map).row;
2689
2690 for row in (0..=range.end.row()).rev() {
2691 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2692 let fold_range = self.foldable_range_for_line(&display_map, row);
2693 if fold_range.end.row >= buffer_start_row {
2694 fold_ranges.push(fold_range);
2695 if row <= range.start.row() {
2696 break;
2697 }
2698 }
2699 }
2700 }
2701 }
2702
2703 self.fold_ranges(fold_ranges, cx);
2704 }
2705
2706 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2707 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2708 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2709 let buffer = self.buffer.read(cx);
2710 let ranges = selections
2711 .iter()
2712 .map(|s| {
2713 let range = s.display_range(&display_map).sorted();
2714 let mut start = range.start.to_point(&display_map);
2715 let mut end = range.end.to_point(&display_map);
2716 start.column = 0;
2717 end.column = buffer.line_len(end.row);
2718 start..end
2719 })
2720 .collect::<Vec<_>>();
2721 self.unfold_ranges(ranges, cx);
2722 }
2723
2724 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2725 let max_point = display_map.max_point();
2726 if display_row >= max_point.row() {
2727 false
2728 } else {
2729 let (start_indent, is_blank) = display_map.line_indent(display_row);
2730 if is_blank {
2731 false
2732 } else {
2733 for display_row in display_row + 1..=max_point.row() {
2734 let (indent, is_blank) = display_map.line_indent(display_row);
2735 if !is_blank {
2736 return indent > start_indent;
2737 }
2738 }
2739 false
2740 }
2741 }
2742 }
2743
2744 fn foldable_range_for_line(
2745 &self,
2746 display_map: &DisplayMapSnapshot,
2747 start_row: u32,
2748 ) -> Range<Point> {
2749 let max_point = display_map.max_point();
2750
2751 let (start_indent, _) = display_map.line_indent(start_row);
2752 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2753 let mut end = None;
2754 for row in start_row + 1..=max_point.row() {
2755 let (indent, is_blank) = display_map.line_indent(row);
2756 if !is_blank && indent <= start_indent {
2757 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2758 break;
2759 }
2760 }
2761
2762 let end = end.unwrap_or(max_point);
2763 return start.to_point(display_map)..end.to_point(display_map);
2764 }
2765
2766 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2767 let selections = self.selections::<Point>(cx);
2768 let ranges = selections.map(|s| s.start..s.end).collect();
2769 self.fold_ranges(ranges, cx);
2770 }
2771
2772 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2773 if !ranges.is_empty() {
2774 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2775 self.autoscroll_requested = true;
2776 cx.notify();
2777 }
2778 }
2779
2780 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2781 if !ranges.is_empty() {
2782 self.display_map
2783 .update(cx, |map, cx| map.unfold(ranges, cx));
2784 self.autoscroll_requested = true;
2785 cx.notify();
2786 }
2787 }
2788
2789 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2790 self.display_map
2791 .update(cx, |map, cx| map.snapshot(cx))
2792 .longest_row()
2793 }
2794
2795 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2796 self.display_map
2797 .update(cx, |map, cx| map.snapshot(cx))
2798 .max_point()
2799 }
2800
2801 pub fn text(&self, cx: &AppContext) -> String {
2802 self.buffer.read(cx).text()
2803 }
2804
2805 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2806 self.display_map
2807 .update(cx, |map, cx| map.snapshot(cx))
2808 .text()
2809 }
2810
2811 // pub fn font_size(&self) -> f32 {
2812 // self.settings.font_size
2813 // }
2814
2815 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2816 self.display_map
2817 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2818 }
2819
2820 fn next_blink_epoch(&mut self) -> usize {
2821 self.blink_epoch += 1;
2822 self.blink_epoch
2823 }
2824
2825 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2826 self.show_local_cursors = true;
2827 cx.notify();
2828
2829 let epoch = self.next_blink_epoch();
2830 cx.spawn(|this, mut cx| {
2831 let this = this.downgrade();
2832 async move {
2833 Timer::after(CURSOR_BLINK_INTERVAL).await;
2834 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2835 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2836 }
2837 }
2838 })
2839 .detach();
2840 }
2841
2842 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2843 if epoch == self.blink_epoch {
2844 self.blinking_paused = false;
2845 self.blink_cursors(epoch, cx);
2846 }
2847 }
2848
2849 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2850 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2851 self.show_local_cursors = !self.show_local_cursors;
2852 cx.notify();
2853
2854 let epoch = self.next_blink_epoch();
2855 cx.spawn(|this, mut cx| {
2856 let this = this.downgrade();
2857 async move {
2858 Timer::after(CURSOR_BLINK_INTERVAL).await;
2859 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2860 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2861 }
2862 }
2863 })
2864 .detach();
2865 }
2866 }
2867
2868 pub fn show_local_cursors(&self) -> bool {
2869 self.show_local_cursors
2870 }
2871
2872 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2873 self.refresh_active_diagnostics(cx);
2874 cx.notify();
2875 }
2876
2877 fn on_buffer_event(
2878 &mut self,
2879 _: ModelHandle<Buffer>,
2880 event: &language::Event,
2881 cx: &mut ViewContext<Self>,
2882 ) {
2883 match event {
2884 language::Event::Edited => cx.emit(Event::Edited),
2885 language::Event::Dirtied => cx.emit(Event::Dirtied),
2886 language::Event::Saved => cx.emit(Event::Saved),
2887 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2888 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2889 language::Event::Closed => cx.emit(Event::Closed),
2890 language::Event::Reparsed => {}
2891 }
2892 }
2893
2894 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2895 cx.notify();
2896 }
2897}
2898
2899impl Snapshot {
2900 pub fn is_empty(&self) -> bool {
2901 self.display_snapshot.is_empty()
2902 }
2903
2904 pub fn is_focused(&self) -> bool {
2905 self.is_focused
2906 }
2907
2908 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2909 self.placeholder_text.as_ref()
2910 }
2911
2912 pub fn buffer_row_count(&self) -> u32 {
2913 self.display_snapshot.buffer_row_count()
2914 }
2915
2916 pub fn buffer_rows<'a>(&'a self, start_row: u32, cx: &'a AppContext) -> BufferRows<'a> {
2917 self.display_snapshot.buffer_rows(start_row, Some(cx))
2918 }
2919
2920 pub fn chunks<'a>(
2921 &'a self,
2922 display_rows: Range<u32>,
2923 theme: Option<&'a SyntaxTheme>,
2924 cx: &'a AppContext,
2925 ) -> display_map::Chunks<'a> {
2926 self.display_snapshot.chunks(display_rows, theme, cx)
2927 }
2928
2929 pub fn scroll_position(&self) -> Vector2F {
2930 compute_scroll_position(
2931 &self.display_snapshot,
2932 self.scroll_position,
2933 &self.scroll_top_anchor,
2934 )
2935 }
2936
2937 pub fn max_point(&self) -> DisplayPoint {
2938 self.display_snapshot.max_point()
2939 }
2940
2941 pub fn longest_row(&self) -> u32 {
2942 self.display_snapshot.longest_row()
2943 }
2944
2945 pub fn line_len(&self, display_row: u32) -> u32 {
2946 self.display_snapshot.line_len(display_row)
2947 }
2948
2949 pub fn line(&self, display_row: u32) -> String {
2950 self.display_snapshot.line(display_row)
2951 }
2952
2953 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2954 self.display_snapshot.prev_row_boundary(point)
2955 }
2956
2957 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2958 self.display_snapshot.next_row_boundary(point)
2959 }
2960}
2961
2962impl EditorSettings {
2963 #[cfg(any(test, feature = "test-support"))]
2964 pub fn test(cx: &AppContext) -> Self {
2965 Self {
2966 tab_size: 4,
2967 style: {
2968 let font_cache: &gpui::FontCache = cx.font_cache();
2969 let font_family_name = Arc::from("Monaco");
2970 let font_properties = Default::default();
2971 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
2972 let font_id = font_cache
2973 .select_font(font_family_id, &font_properties)
2974 .unwrap();
2975 EditorStyle {
2976 text: gpui::fonts::TextStyle {
2977 font_family_name,
2978 font_family_id,
2979 font_id,
2980 font_size: 14.,
2981 color: gpui::color::Color::from_u32(0xff0000ff),
2982 font_properties,
2983 underline: None,
2984 },
2985 placeholder_text: None,
2986 background: Default::default(),
2987 gutter_background: Default::default(),
2988 active_line_background: Default::default(),
2989 line_number: Default::default(),
2990 line_number_active: Default::default(),
2991 selection: Default::default(),
2992 guest_selections: Default::default(),
2993 syntax: Default::default(),
2994 error_diagnostic: Default::default(),
2995 invalid_error_diagnostic: Default::default(),
2996 warning_diagnostic: Default::default(),
2997 invalid_warning_diagnostic: Default::default(),
2998 information_diagnostic: Default::default(),
2999 invalid_information_diagnostic: Default::default(),
3000 hint_diagnostic: Default::default(),
3001 invalid_hint_diagnostic: Default::default(),
3002 }
3003 },
3004 }
3005 }
3006}
3007
3008fn compute_scroll_position(
3009 snapshot: &DisplayMapSnapshot,
3010 mut scroll_position: Vector2F,
3011 scroll_top_anchor: &Anchor,
3012) -> Vector2F {
3013 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3014 scroll_position.set_y(scroll_top + scroll_position.y());
3015 scroll_position
3016}
3017
3018pub enum Event {
3019 Activate,
3020 Edited,
3021 Blurred,
3022 Dirtied,
3023 Saved,
3024 FileHandleChanged,
3025 Closed,
3026}
3027
3028impl Entity for Editor {
3029 type Event = Event;
3030
3031 fn release(&mut self, cx: &mut MutableAppContext) {
3032 self.buffer.update(cx, |buffer, cx| {
3033 buffer
3034 .remove_selection_set(self.selection_set_id, cx)
3035 .unwrap();
3036 });
3037 }
3038}
3039
3040impl View for Editor {
3041 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3042 let settings = self.build_settings.borrow_mut()(cx);
3043 self.display_map.update(cx, |map, cx| {
3044 map.set_font(
3045 settings.style.text.font_id,
3046 settings.style.text.font_size,
3047 cx,
3048 )
3049 });
3050 EditorElement::new(self.handle.clone(), settings).boxed()
3051 }
3052
3053 fn ui_name() -> &'static str {
3054 "Editor"
3055 }
3056
3057 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3058 self.focused = true;
3059 self.blink_cursors(self.blink_epoch, cx);
3060 self.buffer.update(cx, |buffer, cx| {
3061 buffer
3062 .set_active_selection_set(Some(self.selection_set_id), cx)
3063 .unwrap();
3064 });
3065 }
3066
3067 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3068 self.focused = false;
3069 self.show_local_cursors = false;
3070 self.buffer.update(cx, |buffer, cx| {
3071 buffer.set_active_selection_set(None, cx).unwrap();
3072 });
3073 cx.emit(Event::Blurred);
3074 cx.notify();
3075 }
3076
3077 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3078 let mut cx = Self::default_keymap_context();
3079 let mode = match self.mode {
3080 EditorMode::SingleLine => "single_line",
3081 EditorMode::AutoHeight { .. } => "auto_height",
3082 EditorMode::Full => "full",
3083 };
3084 cx.map.insert("mode".into(), mode.into());
3085 cx
3086 }
3087}
3088
3089impl SelectionExt for Selection<Point> {
3090 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3091 let start = self.start.to_display_point(map);
3092 let end = self.end.to_display_point(map);
3093 if self.reversed {
3094 end..start
3095 } else {
3096 start..end
3097 }
3098 }
3099
3100 fn spanned_rows(
3101 &self,
3102 include_end_if_at_line_start: bool,
3103 map: &DisplayMapSnapshot,
3104 ) -> SpannedRows {
3105 let display_start = self.start.to_display_point(map);
3106 let mut display_end = self.end.to_display_point(map);
3107 if !include_end_if_at_line_start
3108 && display_end.row() != map.max_point().row()
3109 && display_start.row() != display_end.row()
3110 && display_end.column() == 0
3111 {
3112 *display_end.row_mut() -= 1;
3113 }
3114
3115 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3116 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3117
3118 SpannedRows {
3119 buffer_rows: buffer_start.row..buffer_end.row + 1,
3120 display_rows: display_start.row()..display_end.row() + 1,
3121 }
3122 }
3123}
3124
3125pub fn diagnostic_style(
3126 severity: DiagnosticSeverity,
3127 valid: bool,
3128 style: &EditorStyle,
3129) -> DiagnosticStyle {
3130 match (severity, valid) {
3131 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3132 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3133 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3134 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3135 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3136 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3137 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3138 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3139 _ => Default::default(),
3140 }
3141}
3142
3143#[cfg(test)]
3144mod tests {
3145 use super::*;
3146 use crate::test::sample_text;
3147 use buffer::Point;
3148 use unindent::Unindent;
3149
3150 #[gpui::test]
3151 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3152 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3153 let settings = EditorSettings::test(cx);
3154 let (_, editor) =
3155 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3156
3157 editor.update(cx, |view, cx| {
3158 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3159 });
3160
3161 assert_eq!(
3162 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3163 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3164 );
3165
3166 editor.update(cx, |view, cx| {
3167 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3168 });
3169
3170 assert_eq!(
3171 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3172 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3173 );
3174
3175 editor.update(cx, |view, cx| {
3176 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3177 });
3178
3179 assert_eq!(
3180 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3181 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3182 );
3183
3184 editor.update(cx, |view, cx| {
3185 view.end_selection(cx);
3186 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3187 });
3188
3189 assert_eq!(
3190 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3191 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3192 );
3193
3194 editor.update(cx, |view, cx| {
3195 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
3196 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3197 });
3198
3199 assert_eq!(
3200 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3201 [
3202 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3203 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3204 ]
3205 );
3206
3207 editor.update(cx, |view, cx| {
3208 view.end_selection(cx);
3209 });
3210
3211 assert_eq!(
3212 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3213 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3214 );
3215 }
3216
3217 #[gpui::test]
3218 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3219 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3220 let settings = EditorSettings::test(cx);
3221 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3222
3223 view.update(cx, |view, cx| {
3224 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3225 assert_eq!(
3226 view.selection_ranges(cx),
3227 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3228 );
3229 });
3230
3231 view.update(cx, |view, cx| {
3232 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3233 assert_eq!(
3234 view.selection_ranges(cx),
3235 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3236 );
3237 });
3238
3239 view.update(cx, |view, cx| {
3240 view.cancel(&Cancel, cx);
3241 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3242 assert_eq!(
3243 view.selection_ranges(cx),
3244 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3245 );
3246 });
3247 }
3248
3249 #[gpui::test]
3250 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3251 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3252 let settings = EditorSettings::test(cx);
3253 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3254
3255 view.update(cx, |view, cx| {
3256 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
3257 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3258 view.end_selection(cx);
3259
3260 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
3261 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3262 view.end_selection(cx);
3263 assert_eq!(
3264 view.selection_ranges(cx),
3265 [
3266 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3267 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3268 ]
3269 );
3270 });
3271
3272 view.update(cx, |view, cx| {
3273 view.cancel(&Cancel, cx);
3274 assert_eq!(
3275 view.selection_ranges(cx),
3276 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3277 );
3278 });
3279
3280 view.update(cx, |view, cx| {
3281 view.cancel(&Cancel, cx);
3282 assert_eq!(
3283 view.selection_ranges(cx),
3284 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3285 );
3286 });
3287 }
3288
3289 #[gpui::test]
3290 fn test_fold(cx: &mut gpui::MutableAppContext) {
3291 let buffer = cx.add_model(|cx| {
3292 Buffer::new(
3293 0,
3294 "
3295 impl Foo {
3296 // Hello!
3297
3298 fn a() {
3299 1
3300 }
3301
3302 fn b() {
3303 2
3304 }
3305
3306 fn c() {
3307 3
3308 }
3309 }
3310 "
3311 .unindent(),
3312 cx,
3313 )
3314 });
3315 let settings = EditorSettings::test(&cx);
3316 let (_, view) = cx.add_window(Default::default(), |cx| {
3317 build_editor(buffer.clone(), settings, cx)
3318 });
3319
3320 view.update(cx, |view, cx| {
3321 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3322 .unwrap();
3323 view.fold(&Fold, cx);
3324 assert_eq!(
3325 view.display_text(cx),
3326 "
3327 impl Foo {
3328 // Hello!
3329
3330 fn a() {
3331 1
3332 }
3333
3334 fn b() {…
3335 }
3336
3337 fn c() {…
3338 }
3339 }
3340 "
3341 .unindent(),
3342 );
3343
3344 view.fold(&Fold, cx);
3345 assert_eq!(
3346 view.display_text(cx),
3347 "
3348 impl Foo {…
3349 }
3350 "
3351 .unindent(),
3352 );
3353
3354 view.unfold(&Unfold, cx);
3355 assert_eq!(
3356 view.display_text(cx),
3357 "
3358 impl Foo {
3359 // Hello!
3360
3361 fn a() {
3362 1
3363 }
3364
3365 fn b() {…
3366 }
3367
3368 fn c() {…
3369 }
3370 }
3371 "
3372 .unindent(),
3373 );
3374
3375 view.unfold(&Unfold, cx);
3376 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3377 });
3378 }
3379
3380 #[gpui::test]
3381 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3382 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3383 let settings = EditorSettings::test(&cx);
3384 let (_, view) = cx.add_window(Default::default(), |cx| {
3385 build_editor(buffer.clone(), settings, cx)
3386 });
3387
3388 buffer.update(cx, |buffer, cx| {
3389 buffer.edit(
3390 vec![
3391 Point::new(1, 0)..Point::new(1, 0),
3392 Point::new(1, 1)..Point::new(1, 1),
3393 ],
3394 "\t",
3395 cx,
3396 );
3397 });
3398
3399 view.update(cx, |view, cx| {
3400 assert_eq!(
3401 view.selection_ranges(cx),
3402 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3403 );
3404
3405 view.move_down(&MoveDown, cx);
3406 assert_eq!(
3407 view.selection_ranges(cx),
3408 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3409 );
3410
3411 view.move_right(&MoveRight, cx);
3412 assert_eq!(
3413 view.selection_ranges(cx),
3414 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3415 );
3416
3417 view.move_left(&MoveLeft, cx);
3418 assert_eq!(
3419 view.selection_ranges(cx),
3420 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3421 );
3422
3423 view.move_up(&MoveUp, cx);
3424 assert_eq!(
3425 view.selection_ranges(cx),
3426 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3427 );
3428
3429 view.move_to_end(&MoveToEnd, cx);
3430 assert_eq!(
3431 view.selection_ranges(cx),
3432 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3433 );
3434
3435 view.move_to_beginning(&MoveToBeginning, cx);
3436 assert_eq!(
3437 view.selection_ranges(cx),
3438 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3439 );
3440
3441 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3442 .unwrap();
3443 view.select_to_beginning(&SelectToBeginning, cx);
3444 assert_eq!(
3445 view.selection_ranges(cx),
3446 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3447 );
3448
3449 view.select_to_end(&SelectToEnd, cx);
3450 assert_eq!(
3451 view.selection_ranges(cx),
3452 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3453 );
3454 });
3455 }
3456
3457 #[gpui::test]
3458 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3459 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3460 let settings = EditorSettings::test(&cx);
3461 let (_, view) = cx.add_window(Default::default(), |cx| {
3462 build_editor(buffer.clone(), settings, cx)
3463 });
3464
3465 assert_eq!('ⓐ'.len_utf8(), 3);
3466 assert_eq!('α'.len_utf8(), 2);
3467
3468 view.update(cx, |view, cx| {
3469 view.fold_ranges(
3470 vec![
3471 Point::new(0, 6)..Point::new(0, 12),
3472 Point::new(1, 2)..Point::new(1, 4),
3473 Point::new(2, 4)..Point::new(2, 8),
3474 ],
3475 cx,
3476 );
3477 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3478
3479 view.move_right(&MoveRight, cx);
3480 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3481 view.move_right(&MoveRight, cx);
3482 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3483 view.move_right(&MoveRight, cx);
3484 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3485
3486 view.move_down(&MoveDown, cx);
3487 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3488 view.move_left(&MoveLeft, cx);
3489 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3490 view.move_left(&MoveLeft, cx);
3491 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3492
3493 view.move_down(&MoveDown, cx);
3494 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3495 view.move_right(&MoveRight, cx);
3496 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3497 view.move_right(&MoveRight, cx);
3498 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3499 view.move_right(&MoveRight, cx);
3500 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3501
3502 view.move_up(&MoveUp, cx);
3503 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3504 view.move_up(&MoveUp, cx);
3505 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3506 view.move_left(&MoveLeft, cx);
3507 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3508 view.move_left(&MoveLeft, cx);
3509 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3510 view.move_left(&MoveLeft, cx);
3511 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3512 });
3513 }
3514
3515 #[gpui::test]
3516 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3517 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3518 let settings = EditorSettings::test(&cx);
3519 let (_, view) = cx.add_window(Default::default(), |cx| {
3520 build_editor(buffer.clone(), settings, cx)
3521 });
3522 view.update(cx, |view, cx| {
3523 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3524 .unwrap();
3525
3526 view.move_down(&MoveDown, cx);
3527 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3528
3529 view.move_down(&MoveDown, cx);
3530 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3531
3532 view.move_down(&MoveDown, cx);
3533 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3534
3535 view.move_down(&MoveDown, cx);
3536 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3537
3538 view.move_up(&MoveUp, cx);
3539 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3540
3541 view.move_up(&MoveUp, cx);
3542 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3543 });
3544 }
3545
3546 #[gpui::test]
3547 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3548 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3549 let settings = EditorSettings::test(&cx);
3550 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3551 view.update(cx, |view, cx| {
3552 view.select_display_ranges(
3553 &[
3554 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3555 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3556 ],
3557 cx,
3558 )
3559 .unwrap();
3560 });
3561
3562 view.update(cx, |view, cx| {
3563 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3564 assert_eq!(
3565 view.selection_ranges(cx),
3566 &[
3567 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3568 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3569 ]
3570 );
3571 });
3572
3573 view.update(cx, |view, cx| {
3574 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3575 assert_eq!(
3576 view.selection_ranges(cx),
3577 &[
3578 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3579 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3580 ]
3581 );
3582 });
3583
3584 view.update(cx, |view, cx| {
3585 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3586 assert_eq!(
3587 view.selection_ranges(cx),
3588 &[
3589 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3590 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3591 ]
3592 );
3593 });
3594
3595 view.update(cx, |view, cx| {
3596 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3597 assert_eq!(
3598 view.selection_ranges(cx),
3599 &[
3600 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3601 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3602 ]
3603 );
3604 });
3605
3606 // Moving to the end of line again is a no-op.
3607 view.update(cx, |view, cx| {
3608 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3609 assert_eq!(
3610 view.selection_ranges(cx),
3611 &[
3612 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3613 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3614 ]
3615 );
3616 });
3617
3618 view.update(cx, |view, cx| {
3619 view.move_left(&MoveLeft, cx);
3620 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3621 assert_eq!(
3622 view.selection_ranges(cx),
3623 &[
3624 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3625 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3626 ]
3627 );
3628 });
3629
3630 view.update(cx, |view, cx| {
3631 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3632 assert_eq!(
3633 view.selection_ranges(cx),
3634 &[
3635 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3636 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3637 ]
3638 );
3639 });
3640
3641 view.update(cx, |view, cx| {
3642 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3643 assert_eq!(
3644 view.selection_ranges(cx),
3645 &[
3646 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3647 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3648 ]
3649 );
3650 });
3651
3652 view.update(cx, |view, cx| {
3653 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3654 assert_eq!(
3655 view.selection_ranges(cx),
3656 &[
3657 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3658 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3659 ]
3660 );
3661 });
3662
3663 view.update(cx, |view, cx| {
3664 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3665 assert_eq!(view.display_text(cx), "ab\n de");
3666 assert_eq!(
3667 view.selection_ranges(cx),
3668 &[
3669 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3670 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3671 ]
3672 );
3673 });
3674
3675 view.update(cx, |view, cx| {
3676 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3677 assert_eq!(view.display_text(cx), "\n");
3678 assert_eq!(
3679 view.selection_ranges(cx),
3680 &[
3681 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3682 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3683 ]
3684 );
3685 });
3686 }
3687
3688 #[gpui::test]
3689 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3690 let buffer =
3691 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3692 let settings = EditorSettings::test(&cx);
3693 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3694 view.update(cx, |view, cx| {
3695 view.select_display_ranges(
3696 &[
3697 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3698 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3699 ],
3700 cx,
3701 )
3702 .unwrap();
3703 });
3704
3705 view.update(cx, |view, cx| {
3706 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3707 assert_eq!(
3708 view.selection_ranges(cx),
3709 &[
3710 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3711 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3712 ]
3713 );
3714 });
3715
3716 view.update(cx, |view, cx| {
3717 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3718 assert_eq!(
3719 view.selection_ranges(cx),
3720 &[
3721 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3722 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3723 ]
3724 );
3725 });
3726
3727 view.update(cx, |view, cx| {
3728 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3729 assert_eq!(
3730 view.selection_ranges(cx),
3731 &[
3732 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3733 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3734 ]
3735 );
3736 });
3737
3738 view.update(cx, |view, cx| {
3739 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3740 assert_eq!(
3741 view.selection_ranges(cx),
3742 &[
3743 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3744 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3745 ]
3746 );
3747 });
3748
3749 view.update(cx, |view, cx| {
3750 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3751 assert_eq!(
3752 view.selection_ranges(cx),
3753 &[
3754 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3755 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3756 ]
3757 );
3758 });
3759
3760 view.update(cx, |view, cx| {
3761 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3762 assert_eq!(
3763 view.selection_ranges(cx),
3764 &[
3765 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3766 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3767 ]
3768 );
3769 });
3770
3771 view.update(cx, |view, cx| {
3772 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3773 assert_eq!(
3774 view.selection_ranges(cx),
3775 &[
3776 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3777 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3778 ]
3779 );
3780 });
3781
3782 view.update(cx, |view, cx| {
3783 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3784 assert_eq!(
3785 view.selection_ranges(cx),
3786 &[
3787 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3788 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3789 ]
3790 );
3791 });
3792
3793 view.update(cx, |view, cx| {
3794 view.move_right(&MoveRight, cx);
3795 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3796 assert_eq!(
3797 view.selection_ranges(cx),
3798 &[
3799 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3800 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3801 ]
3802 );
3803 });
3804
3805 view.update(cx, |view, cx| {
3806 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3807 assert_eq!(
3808 view.selection_ranges(cx),
3809 &[
3810 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3811 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3812 ]
3813 );
3814 });
3815
3816 view.update(cx, |view, cx| {
3817 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3818 assert_eq!(
3819 view.selection_ranges(cx),
3820 &[
3821 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3822 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3823 ]
3824 );
3825 });
3826 }
3827
3828 #[gpui::test]
3829 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3830 let buffer =
3831 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3832 let settings = EditorSettings::test(&cx);
3833 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3834
3835 view.update(cx, |view, cx| {
3836 view.set_wrap_width(140., cx);
3837 assert_eq!(
3838 view.display_text(cx),
3839 "use one::{\n two::three::\n four::five\n};"
3840 );
3841
3842 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3843 .unwrap();
3844
3845 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3846 assert_eq!(
3847 view.selection_ranges(cx),
3848 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3849 );
3850
3851 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3852 assert_eq!(
3853 view.selection_ranges(cx),
3854 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3855 );
3856
3857 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3858 assert_eq!(
3859 view.selection_ranges(cx),
3860 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3861 );
3862
3863 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3864 assert_eq!(
3865 view.selection_ranges(cx),
3866 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3867 );
3868
3869 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3870 assert_eq!(
3871 view.selection_ranges(cx),
3872 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3873 );
3874
3875 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3876 assert_eq!(
3877 view.selection_ranges(cx),
3878 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3879 );
3880 });
3881 }
3882
3883 #[gpui::test]
3884 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3885 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3886 let settings = EditorSettings::test(&cx);
3887 let (_, view) = cx.add_window(Default::default(), |cx| {
3888 build_editor(buffer.clone(), settings, cx)
3889 });
3890
3891 view.update(cx, |view, cx| {
3892 view.select_display_ranges(
3893 &[
3894 // an empty selection - the preceding word fragment is deleted
3895 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3896 // characters selected - they are deleted
3897 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3898 ],
3899 cx,
3900 )
3901 .unwrap();
3902 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3903 });
3904
3905 assert_eq!(buffer.read(cx).text(), "e two te four");
3906
3907 view.update(cx, |view, cx| {
3908 view.select_display_ranges(
3909 &[
3910 // an empty selection - the following word fragment is deleted
3911 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3912 // characters selected - they are deleted
3913 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3914 ],
3915 cx,
3916 )
3917 .unwrap();
3918 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3919 });
3920
3921 assert_eq!(buffer.read(cx).text(), "e t te our");
3922 }
3923
3924 #[gpui::test]
3925 fn test_newline(cx: &mut gpui::MutableAppContext) {
3926 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
3927 let settings = EditorSettings::test(&cx);
3928 let (_, view) = cx.add_window(Default::default(), |cx| {
3929 build_editor(buffer.clone(), settings, cx)
3930 });
3931
3932 view.update(cx, |view, cx| {
3933 view.select_display_ranges(
3934 &[
3935 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3936 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3937 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
3938 ],
3939 cx,
3940 )
3941 .unwrap();
3942
3943 view.newline(&Newline, cx);
3944 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
3945 });
3946 }
3947
3948 #[gpui::test]
3949 fn test_backspace(cx: &mut gpui::MutableAppContext) {
3950 let buffer = cx.add_model(|cx| {
3951 Buffer::new(
3952 0,
3953 "one two three\nfour five six\nseven eight nine\nten\n",
3954 cx,
3955 )
3956 });
3957 let settings = EditorSettings::test(&cx);
3958 let (_, view) = cx.add_window(Default::default(), |cx| {
3959 build_editor(buffer.clone(), settings, cx)
3960 });
3961
3962 view.update(cx, |view, cx| {
3963 view.select_display_ranges(
3964 &[
3965 // an empty selection - the preceding character is deleted
3966 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3967 // one character selected - it is deleted
3968 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3969 // a line suffix selected - it is deleted
3970 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3971 ],
3972 cx,
3973 )
3974 .unwrap();
3975 view.backspace(&Backspace, cx);
3976 });
3977
3978 assert_eq!(
3979 buffer.read(cx).text(),
3980 "oe two three\nfou five six\nseven ten\n"
3981 );
3982 }
3983
3984 #[gpui::test]
3985 fn test_delete(cx: &mut gpui::MutableAppContext) {
3986 let buffer = cx.add_model(|cx| {
3987 Buffer::new(
3988 0,
3989 "one two three\nfour five six\nseven eight nine\nten\n",
3990 cx,
3991 )
3992 });
3993 let settings = EditorSettings::test(&cx);
3994 let (_, view) = cx.add_window(Default::default(), |cx| {
3995 build_editor(buffer.clone(), settings, cx)
3996 });
3997
3998 view.update(cx, |view, cx| {
3999 view.select_display_ranges(
4000 &[
4001 // an empty selection - the following character is deleted
4002 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4003 // one character selected - it is deleted
4004 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4005 // a line suffix selected - it is deleted
4006 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4007 ],
4008 cx,
4009 )
4010 .unwrap();
4011 view.delete(&Delete, cx);
4012 });
4013
4014 assert_eq!(
4015 buffer.read(cx).text(),
4016 "on two three\nfou five six\nseven ten\n"
4017 );
4018 }
4019
4020 #[gpui::test]
4021 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4022 let settings = EditorSettings::test(&cx);
4023 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4024 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4025 view.update(cx, |view, cx| {
4026 view.select_display_ranges(
4027 &[
4028 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4029 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4030 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4031 ],
4032 cx,
4033 )
4034 .unwrap();
4035 view.delete_line(&DeleteLine, cx);
4036 assert_eq!(view.display_text(cx), "ghi");
4037 assert_eq!(
4038 view.selection_ranges(cx),
4039 vec![
4040 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4041 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4042 ]
4043 );
4044 });
4045
4046 let settings = EditorSettings::test(&cx);
4047 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4048 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4049 view.update(cx, |view, cx| {
4050 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4051 .unwrap();
4052 view.delete_line(&DeleteLine, cx);
4053 assert_eq!(view.display_text(cx), "ghi\n");
4054 assert_eq!(
4055 view.selection_ranges(cx),
4056 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4057 );
4058 });
4059 }
4060
4061 #[gpui::test]
4062 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4063 let settings = EditorSettings::test(&cx);
4064 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4065 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4066 view.update(cx, |view, cx| {
4067 view.select_display_ranges(
4068 &[
4069 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4070 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4071 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4072 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4073 ],
4074 cx,
4075 )
4076 .unwrap();
4077 view.duplicate_line(&DuplicateLine, cx);
4078 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4079 assert_eq!(
4080 view.selection_ranges(cx),
4081 vec![
4082 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4083 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4084 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4085 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4086 ]
4087 );
4088 });
4089
4090 let settings = EditorSettings::test(&cx);
4091 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4092 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4093 view.update(cx, |view, cx| {
4094 view.select_display_ranges(
4095 &[
4096 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4097 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4098 ],
4099 cx,
4100 )
4101 .unwrap();
4102 view.duplicate_line(&DuplicateLine, cx);
4103 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4104 assert_eq!(
4105 view.selection_ranges(cx),
4106 vec![
4107 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4108 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4109 ]
4110 );
4111 });
4112 }
4113
4114 #[gpui::test]
4115 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4116 let settings = EditorSettings::test(&cx);
4117 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4118 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4119 view.update(cx, |view, cx| {
4120 view.fold_ranges(
4121 vec![
4122 Point::new(0, 2)..Point::new(1, 2),
4123 Point::new(2, 3)..Point::new(4, 1),
4124 Point::new(7, 0)..Point::new(8, 4),
4125 ],
4126 cx,
4127 );
4128 view.select_display_ranges(
4129 &[
4130 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4131 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4132 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4133 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4134 ],
4135 cx,
4136 )
4137 .unwrap();
4138 assert_eq!(
4139 view.display_text(cx),
4140 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4141 );
4142
4143 view.move_line_up(&MoveLineUp, cx);
4144 assert_eq!(
4145 view.display_text(cx),
4146 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4147 );
4148 assert_eq!(
4149 view.selection_ranges(cx),
4150 vec![
4151 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4152 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4153 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4154 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4155 ]
4156 );
4157 });
4158
4159 view.update(cx, |view, cx| {
4160 view.move_line_down(&MoveLineDown, cx);
4161 assert_eq!(
4162 view.display_text(cx),
4163 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4164 );
4165 assert_eq!(
4166 view.selection_ranges(cx),
4167 vec![
4168 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4169 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4170 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4171 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4172 ]
4173 );
4174 });
4175
4176 view.update(cx, |view, cx| {
4177 view.move_line_down(&MoveLineDown, cx);
4178 assert_eq!(
4179 view.display_text(cx),
4180 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4181 );
4182 assert_eq!(
4183 view.selection_ranges(cx),
4184 vec![
4185 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4186 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4187 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4188 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4189 ]
4190 );
4191 });
4192
4193 view.update(cx, |view, cx| {
4194 view.move_line_up(&MoveLineUp, cx);
4195 assert_eq!(
4196 view.display_text(cx),
4197 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4198 );
4199 assert_eq!(
4200 view.selection_ranges(cx),
4201 vec![
4202 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4203 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4204 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4205 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4206 ]
4207 );
4208 });
4209 }
4210
4211 #[gpui::test]
4212 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4213 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4214 let settings = EditorSettings::test(&cx);
4215 let view = cx
4216 .add_window(Default::default(), |cx| {
4217 build_editor(buffer.clone(), settings, cx)
4218 })
4219 .1;
4220
4221 // Cut with three selections. Clipboard text is divided into three slices.
4222 view.update(cx, |view, cx| {
4223 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4224 view.cut(&Cut, cx);
4225 assert_eq!(view.display_text(cx), "two four six ");
4226 });
4227
4228 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4229 view.update(cx, |view, cx| {
4230 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4231 view.paste(&Paste, cx);
4232 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4233 assert_eq!(
4234 view.selection_ranges(cx),
4235 &[
4236 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4237 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4238 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4239 ]
4240 );
4241 });
4242
4243 // Paste again but with only two cursors. Since the number of cursors doesn't
4244 // match the number of slices in the clipboard, the entire clipboard text
4245 // is pasted at each cursor.
4246 view.update(cx, |view, cx| {
4247 view.select_ranges(vec![0..0, 31..31], false, cx);
4248 view.handle_input(&Input("( ".into()), cx);
4249 view.paste(&Paste, cx);
4250 view.handle_input(&Input(") ".into()), cx);
4251 assert_eq!(
4252 view.display_text(cx),
4253 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4254 );
4255 });
4256
4257 view.update(cx, |view, cx| {
4258 view.select_ranges(vec![0..0], false, cx);
4259 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4260 assert_eq!(
4261 view.display_text(cx),
4262 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4263 );
4264 });
4265
4266 // Cut with three selections, one of which is full-line.
4267 view.update(cx, |view, cx| {
4268 view.select_display_ranges(
4269 &[
4270 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4271 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4272 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4273 ],
4274 cx,
4275 )
4276 .unwrap();
4277 view.cut(&Cut, cx);
4278 assert_eq!(
4279 view.display_text(cx),
4280 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4281 );
4282 });
4283
4284 // Paste with three selections, noticing how the copied selection that was full-line
4285 // gets inserted before the second cursor.
4286 view.update(cx, |view, cx| {
4287 view.select_display_ranges(
4288 &[
4289 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4290 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4291 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4292 ],
4293 cx,
4294 )
4295 .unwrap();
4296 view.paste(&Paste, cx);
4297 assert_eq!(
4298 view.display_text(cx),
4299 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4300 );
4301 assert_eq!(
4302 view.selection_ranges(cx),
4303 &[
4304 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4305 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4306 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4307 ]
4308 );
4309 });
4310
4311 // Copy with a single cursor only, which writes the whole line into the clipboard.
4312 view.update(cx, |view, cx| {
4313 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4314 .unwrap();
4315 view.copy(&Copy, cx);
4316 });
4317
4318 // Paste with three selections, noticing how the copied full-line selection is inserted
4319 // before the empty selections but replaces the selection that is non-empty.
4320 view.update(cx, |view, cx| {
4321 view.select_display_ranges(
4322 &[
4323 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4324 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4325 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4326 ],
4327 cx,
4328 )
4329 .unwrap();
4330 view.paste(&Paste, cx);
4331 assert_eq!(
4332 view.display_text(cx),
4333 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4334 );
4335 assert_eq!(
4336 view.selection_ranges(cx),
4337 &[
4338 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4339 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4340 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4341 ]
4342 );
4343 });
4344 }
4345
4346 #[gpui::test]
4347 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4348 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4349 let settings = EditorSettings::test(&cx);
4350 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4351 view.update(cx, |view, cx| {
4352 view.select_all(&SelectAll, cx);
4353 assert_eq!(
4354 view.selection_ranges(cx),
4355 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4356 );
4357 });
4358 }
4359
4360 #[gpui::test]
4361 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4362 let settings = EditorSettings::test(&cx);
4363 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4364 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4365 view.update(cx, |view, cx| {
4366 view.select_display_ranges(
4367 &[
4368 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4369 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4370 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4371 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4372 ],
4373 cx,
4374 )
4375 .unwrap();
4376 view.select_line(&SelectLine, cx);
4377 assert_eq!(
4378 view.selection_ranges(cx),
4379 vec![
4380 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4381 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4382 ]
4383 );
4384 });
4385
4386 view.update(cx, |view, cx| {
4387 view.select_line(&SelectLine, cx);
4388 assert_eq!(
4389 view.selection_ranges(cx),
4390 vec![
4391 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4392 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4393 ]
4394 );
4395 });
4396
4397 view.update(cx, |view, cx| {
4398 view.select_line(&SelectLine, cx);
4399 assert_eq!(
4400 view.selection_ranges(cx),
4401 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4402 );
4403 });
4404 }
4405
4406 #[gpui::test]
4407 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4408 let settings = EditorSettings::test(&cx);
4409 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4410 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4411 view.update(cx, |view, cx| {
4412 view.fold_ranges(
4413 vec![
4414 Point::new(0, 2)..Point::new(1, 2),
4415 Point::new(2, 3)..Point::new(4, 1),
4416 Point::new(7, 0)..Point::new(8, 4),
4417 ],
4418 cx,
4419 );
4420 view.select_display_ranges(
4421 &[
4422 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4423 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4424 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4425 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4426 ],
4427 cx,
4428 )
4429 .unwrap();
4430 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4431 });
4432
4433 view.update(cx, |view, cx| {
4434 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4435 assert_eq!(
4436 view.display_text(cx),
4437 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4438 );
4439 assert_eq!(
4440 view.selection_ranges(cx),
4441 [
4442 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4443 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4444 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4445 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4446 ]
4447 );
4448 });
4449
4450 view.update(cx, |view, cx| {
4451 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4452 .unwrap();
4453 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4454 assert_eq!(
4455 view.display_text(cx),
4456 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4457 );
4458 assert_eq!(
4459 view.selection_ranges(cx),
4460 [
4461 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4462 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4463 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4464 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4465 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4466 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4467 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4468 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4469 ]
4470 );
4471 });
4472 }
4473
4474 #[gpui::test]
4475 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4476 let settings = EditorSettings::test(&cx);
4477 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4478 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4479
4480 view.update(cx, |view, cx| {
4481 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4482 .unwrap();
4483 });
4484 view.update(cx, |view, cx| {
4485 view.add_selection_above(&AddSelectionAbove, cx);
4486 assert_eq!(
4487 view.selection_ranges(cx),
4488 vec![
4489 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4490 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4491 ]
4492 );
4493 });
4494
4495 view.update(cx, |view, cx| {
4496 view.add_selection_above(&AddSelectionAbove, cx);
4497 assert_eq!(
4498 view.selection_ranges(cx),
4499 vec![
4500 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4501 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4502 ]
4503 );
4504 });
4505
4506 view.update(cx, |view, cx| {
4507 view.add_selection_below(&AddSelectionBelow, cx);
4508 assert_eq!(
4509 view.selection_ranges(cx),
4510 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4511 );
4512 });
4513
4514 view.update(cx, |view, cx| {
4515 view.add_selection_below(&AddSelectionBelow, cx);
4516 assert_eq!(
4517 view.selection_ranges(cx),
4518 vec![
4519 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4520 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4521 ]
4522 );
4523 });
4524
4525 view.update(cx, |view, cx| {
4526 view.add_selection_below(&AddSelectionBelow, cx);
4527 assert_eq!(
4528 view.selection_ranges(cx),
4529 vec![
4530 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4531 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4532 ]
4533 );
4534 });
4535
4536 view.update(cx, |view, cx| {
4537 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4538 .unwrap();
4539 });
4540 view.update(cx, |view, cx| {
4541 view.add_selection_below(&AddSelectionBelow, cx);
4542 assert_eq!(
4543 view.selection_ranges(cx),
4544 vec![
4545 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4546 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4547 ]
4548 );
4549 });
4550
4551 view.update(cx, |view, cx| {
4552 view.add_selection_below(&AddSelectionBelow, cx);
4553 assert_eq!(
4554 view.selection_ranges(cx),
4555 vec![
4556 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4557 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4558 ]
4559 );
4560 });
4561
4562 view.update(cx, |view, cx| {
4563 view.add_selection_above(&AddSelectionAbove, cx);
4564 assert_eq!(
4565 view.selection_ranges(cx),
4566 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4567 );
4568 });
4569
4570 view.update(cx, |view, cx| {
4571 view.add_selection_above(&AddSelectionAbove, cx);
4572 assert_eq!(
4573 view.selection_ranges(cx),
4574 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4575 );
4576 });
4577
4578 view.update(cx, |view, cx| {
4579 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4580 .unwrap();
4581 view.add_selection_below(&AddSelectionBelow, cx);
4582 assert_eq!(
4583 view.selection_ranges(cx),
4584 vec![
4585 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4586 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4587 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4588 ]
4589 );
4590 });
4591
4592 view.update(cx, |view, cx| {
4593 view.add_selection_below(&AddSelectionBelow, cx);
4594 assert_eq!(
4595 view.selection_ranges(cx),
4596 vec![
4597 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4598 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4599 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4600 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4601 ]
4602 );
4603 });
4604
4605 view.update(cx, |view, cx| {
4606 view.add_selection_above(&AddSelectionAbove, cx);
4607 assert_eq!(
4608 view.selection_ranges(cx),
4609 vec![
4610 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4611 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4612 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4613 ]
4614 );
4615 });
4616
4617 view.update(cx, |view, cx| {
4618 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4619 .unwrap();
4620 });
4621 view.update(cx, |view, cx| {
4622 view.add_selection_above(&AddSelectionAbove, cx);
4623 assert_eq!(
4624 view.selection_ranges(cx),
4625 vec![
4626 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4627 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4628 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4629 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4630 ]
4631 );
4632 });
4633
4634 view.update(cx, |view, cx| {
4635 view.add_selection_below(&AddSelectionBelow, cx);
4636 assert_eq!(
4637 view.selection_ranges(cx),
4638 vec![
4639 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4640 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4641 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4642 ]
4643 );
4644 });
4645 }
4646
4647 #[gpui::test]
4648 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4649 let settings = cx.read(EditorSettings::test);
4650 let language = Some(Arc::new(Language::new(
4651 LanguageConfig::default(),
4652 tree_sitter_rust::language(),
4653 )));
4654
4655 let text = r#"
4656 use mod1::mod2::{mod3, mod4};
4657
4658 fn fn_1(param1: bool, param2: &str) {
4659 let var1 = "text";
4660 }
4661 "#
4662 .unindent();
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, 25)..DisplayPoint::new(0, 25),
4673 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4674 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4675 ],
4676 cx,
4677 )
4678 .unwrap();
4679 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4680 });
4681 assert_eq!(
4682 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4683 &[
4684 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4685 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4686 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4687 ]
4688 );
4689
4690 view.update(&mut cx, |view, cx| {
4691 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4692 });
4693 assert_eq!(
4694 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4695 &[
4696 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4697 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4698 ]
4699 );
4700
4701 view.update(&mut cx, |view, cx| {
4702 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4703 });
4704 assert_eq!(
4705 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4706 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4707 );
4708
4709 // Trying to expand the selected syntax node one more time has no effect.
4710 view.update(&mut cx, |view, cx| {
4711 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4712 });
4713 assert_eq!(
4714 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4715 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4716 );
4717
4718 view.update(&mut cx, |view, cx| {
4719 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4720 });
4721 assert_eq!(
4722 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4723 &[
4724 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4725 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4726 ]
4727 );
4728
4729 view.update(&mut cx, |view, cx| {
4730 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4731 });
4732 assert_eq!(
4733 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4734 &[
4735 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4736 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4737 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4738 ]
4739 );
4740
4741 view.update(&mut cx, |view, cx| {
4742 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4743 });
4744 assert_eq!(
4745 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4746 &[
4747 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4748 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4749 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4750 ]
4751 );
4752
4753 // Trying to shrink the selected syntax node one more time has no effect.
4754 view.update(&mut cx, |view, cx| {
4755 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4756 });
4757 assert_eq!(
4758 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4759 &[
4760 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4761 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4762 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4763 ]
4764 );
4765
4766 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4767 // a fold.
4768 view.update(&mut cx, |view, cx| {
4769 view.fold_ranges(
4770 vec![
4771 Point::new(0, 21)..Point::new(0, 24),
4772 Point::new(3, 20)..Point::new(3, 22),
4773 ],
4774 cx,
4775 );
4776 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4777 });
4778 assert_eq!(
4779 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4780 &[
4781 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4782 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4783 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4784 ]
4785 );
4786 }
4787
4788 #[gpui::test]
4789 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4790 let settings = cx.read(EditorSettings::test);
4791 let language = Some(Arc::new(Language::new(
4792 LanguageConfig {
4793 brackets: vec![
4794 BracketPair {
4795 start: "{".to_string(),
4796 end: "}".to_string(),
4797 close: true,
4798 newline: true,
4799 },
4800 BracketPair {
4801 start: "/*".to_string(),
4802 end: " */".to_string(),
4803 close: true,
4804 newline: true,
4805 },
4806 ],
4807 ..Default::default()
4808 },
4809 tree_sitter_rust::language(),
4810 )));
4811
4812 let text = r#"
4813 a
4814
4815 /
4816
4817 "#
4818 .unindent();
4819
4820 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4821 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4822 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4823 .await;
4824
4825 view.update(&mut cx, |view, cx| {
4826 view.select_display_ranges(
4827 &[
4828 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4829 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4830 ],
4831 cx,
4832 )
4833 .unwrap();
4834 view.handle_input(&Input("{".to_string()), cx);
4835 view.handle_input(&Input("{".to_string()), cx);
4836 view.handle_input(&Input("{".to_string()), cx);
4837 assert_eq!(
4838 view.text(cx),
4839 "
4840 {{{}}}
4841 {{{}}}
4842 /
4843
4844 "
4845 .unindent()
4846 );
4847
4848 view.move_right(&MoveRight, cx);
4849 view.handle_input(&Input("}".to_string()), cx);
4850 view.handle_input(&Input("}".to_string()), cx);
4851 view.handle_input(&Input("}".to_string()), cx);
4852 assert_eq!(
4853 view.text(cx),
4854 "
4855 {{{}}}}
4856 {{{}}}}
4857 /
4858
4859 "
4860 .unindent()
4861 );
4862
4863 view.undo(&Undo, cx);
4864 view.handle_input(&Input("/".to_string()), cx);
4865 view.handle_input(&Input("*".to_string()), cx);
4866 assert_eq!(
4867 view.text(cx),
4868 "
4869 /* */
4870 /* */
4871 /
4872
4873 "
4874 .unindent()
4875 );
4876
4877 view.undo(&Undo, cx);
4878 view.select_display_ranges(
4879 &[
4880 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4881 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4882 ],
4883 cx,
4884 )
4885 .unwrap();
4886 view.handle_input(&Input("*".to_string()), cx);
4887 assert_eq!(
4888 view.text(cx),
4889 "
4890 a
4891
4892 /*
4893 *
4894 "
4895 .unindent()
4896 );
4897 });
4898 }
4899
4900 #[gpui::test]
4901 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
4902 let settings = cx.read(EditorSettings::test);
4903 let language = Some(Arc::new(Language::new(
4904 LanguageConfig {
4905 brackets: vec![
4906 BracketPair {
4907 start: "{".to_string(),
4908 end: "}".to_string(),
4909 close: true,
4910 newline: true,
4911 },
4912 BracketPair {
4913 start: "/* ".to_string(),
4914 end: " */".to_string(),
4915 close: true,
4916 newline: true,
4917 },
4918 ],
4919 ..Default::default()
4920 },
4921 tree_sitter_rust::language(),
4922 )));
4923
4924 let text = concat!(
4925 "{ }\n", // Suppress rustfmt
4926 " x\n", //
4927 " /* */\n", //
4928 "x\n", //
4929 "{{} }\n", //
4930 );
4931
4932 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4933 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4934 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4935 .await;
4936
4937 view.update(&mut cx, |view, cx| {
4938 view.select_display_ranges(
4939 &[
4940 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4941 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4942 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4943 ],
4944 cx,
4945 )
4946 .unwrap();
4947 view.newline(&Newline, cx);
4948
4949 assert_eq!(
4950 view.buffer().read(cx).text(),
4951 concat!(
4952 "{ \n", // Suppress rustfmt
4953 "\n", //
4954 "}\n", //
4955 " x\n", //
4956 " /* \n", //
4957 " \n", //
4958 " */\n", //
4959 "x\n", //
4960 "{{} \n", //
4961 "}\n", //
4962 )
4963 );
4964 });
4965 }
4966
4967 impl Editor {
4968 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
4969 self.selections_in_range(
4970 self.selection_set_id,
4971 DisplayPoint::zero()..self.max_point(cx),
4972 cx,
4973 )
4974 .collect::<Vec<_>>()
4975 }
4976 }
4977
4978 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
4979 let point = DisplayPoint::new(row as u32, column as u32);
4980 point..point
4981 }
4982
4983 fn build_editor(
4984 buffer: ModelHandle<Buffer>,
4985 settings: EditorSettings,
4986 cx: &mut ViewContext<Editor>,
4987 ) -> Editor {
4988 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
4989 }
4990}
4991
4992trait RangeExt<T> {
4993 fn sorted(&self) -> Range<T>;
4994 fn to_inclusive(&self) -> RangeInclusive<T>;
4995}
4996
4997impl<T: Ord + Clone> RangeExt<T> for Range<T> {
4998 fn sorted(&self) -> Self {
4999 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5000 }
5001
5002 fn to_inclusive(&self) -> RangeInclusive<T> {
5003 self.start.clone()..=self.end.clone()
5004 }
5005}