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, HashSet},
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 group_range: Range<Anchor>,
347 is_valid: bool,
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.dismiss_diagnostics(cx);
2255 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2256 let buffer = self.buffer.read(cx);
2257
2258 let mut group_end = Point::zero();
2259 let diagnostic_group = buffer
2260 .diagnostic_group::<Point>(group_id)
2261 .map(|(range, diagnostic)| {
2262 if range.end > group_end {
2263 group_end = range.end;
2264 }
2265 (range, diagnostic.clone())
2266 })
2267 .collect::<Vec<_>>();
2268
2269 let group_range = buffer.anchor_after(diagnostic_group[0].0.start)
2270 ..buffer.anchor_before(group_end);
2271 let primary_range = buffer.anchor_after(primary_range.start)
2272 ..buffer.anchor_before(primary_range.end);
2273 let mut primary_message = None;
2274
2275 let blocks = display_map
2276 .insert_blocks(
2277 diagnostic_group.iter().map(|(range, diagnostic)| {
2278 let build_settings = self.build_settings.clone();
2279 let message_len = diagnostic.message.len();
2280 let severity = diagnostic.severity;
2281 if diagnostic.is_primary {
2282 primary_message = Some(diagnostic.message.clone());
2283 }
2284 BlockProperties {
2285 position: range.start,
2286 text: diagnostic.message.as_str(),
2287 build_runs: Some(Arc::new({
2288 let build_settings = build_settings.clone();
2289 move |cx| {
2290 let settings = build_settings.borrow()(cx);
2291 vec![(
2292 message_len,
2293 diagnostic_style(severity, false, &settings.style)
2294 .text
2295 .into(),
2296 )]
2297 }
2298 })),
2299 build_style: Some(Arc::new({
2300 let build_settings = build_settings.clone();
2301 move |cx| {
2302 let settings = build_settings.borrow()(cx);
2303 diagnostic_style(severity, false, &settings.style).block
2304 }
2305 })),
2306 disposition: BlockDisposition::Below,
2307 }
2308 }),
2309 cx,
2310 )
2311 .into_iter()
2312 .zip(
2313 diagnostic_group
2314 .into_iter()
2315 .map(|(_, diagnostic)| diagnostic),
2316 )
2317 .collect();
2318
2319 Some(ActiveDiagnosticGroup {
2320 primary_range,
2321 primary_message: primary_message.unwrap(),
2322 group_range,
2323 blocks,
2324 is_valid: true,
2325 })
2326 });
2327
2328 self.update_selections(
2329 vec![Selection {
2330 id: selection.id,
2331 start: primary_range.start,
2332 end: primary_range.start,
2333 reversed: false,
2334 goal: SelectionGoal::None,
2335 }],
2336 true,
2337 cx,
2338 );
2339 break;
2340 } else if search_start == 0 {
2341 break;
2342 } else {
2343 // Cycle around to the start of the buffer.
2344 search_start = 0;
2345 }
2346 }
2347 }
2348
2349 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2350 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2351 let buffer = self.buffer.read(cx);
2352 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2353 let matching_diagnostic = buffer
2354 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2355 .find_map(|(range, diagnostic)| {
2356 if diagnostic.is_primary
2357 && range.start == primary_range_start
2358 && diagnostic.message == active_diagnostics.primary_message
2359 {
2360 Some(diagnostic.group_id)
2361 } else {
2362 None
2363 }
2364 });
2365 if let Some(matching_diagnostic) = matching_diagnostic {
2366 } else if active_diagnostics.is_valid {
2367 let mut new_styles = HashMap::new();
2368 for (block_id, diagnostic) in &active_diagnostics.blocks {
2369 let build_settings = self.build_settings.clone();
2370 let severity = diagnostic.severity;
2371 new_styles.insert(
2372 *block_id,
2373 Some(move |cx: &AppContext| {
2374 let settings = build_settings.borrow()(cx);
2375 diagnostic_style(severity, false, &settings.style).block
2376 }),
2377 );
2378 }
2379 self.display_map
2380 .update(cx, |display_map, _| display_map.restyle_blocks(new_styles));
2381 }
2382 }
2383 }
2384
2385 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2386 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2387 self.display_map.update(cx, |display_map, cx| {
2388 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2389 });
2390 cx.notify();
2391 }
2392 }
2393
2394 fn build_columnar_selection(
2395 &mut self,
2396 display_map: &DisplayMapSnapshot,
2397 row: u32,
2398 columns: &Range<u32>,
2399 reversed: bool,
2400 ) -> Option<Selection<Point>> {
2401 let is_empty = columns.start == columns.end;
2402 let line_len = display_map.line_len(row);
2403 if columns.start < line_len || (is_empty && columns.start == line_len) {
2404 let start = DisplayPoint::new(row, columns.start);
2405 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2406 Some(Selection {
2407 id: post_inc(&mut self.next_selection_id),
2408 start: start.to_point(display_map),
2409 end: end.to_point(display_map),
2410 reversed,
2411 goal: SelectionGoal::ColumnRange {
2412 start: columns.start,
2413 end: columns.end,
2414 },
2415 })
2416 } else {
2417 None
2418 }
2419 }
2420
2421 pub fn active_selection_sets<'a>(
2422 &'a self,
2423 cx: &'a AppContext,
2424 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2425 let buffer = self.buffer.read(cx);
2426 let replica_id = buffer.replica_id();
2427 buffer
2428 .selection_sets()
2429 .filter(move |(set_id, set)| {
2430 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2431 })
2432 .map(|(set_id, _)| *set_id)
2433 }
2434
2435 pub fn selections_in_range<'a>(
2436 &'a self,
2437 set_id: SelectionSetId,
2438 range: Range<DisplayPoint>,
2439 cx: &'a mut MutableAppContext,
2440 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2441 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2442 let buffer = self.buffer.read(cx);
2443 let selections = self
2444 .selection_set(cx)
2445 .selections::<Point, _>(buffer)
2446 .collect::<Vec<_>>();
2447 let start = range.start.to_point(&display_map);
2448 let start_index = self.selection_insertion_index(&selections, start);
2449 let pending_selection = if set_id.replica_id == self.buffer.read(cx).replica_id() {
2450 self.pending_selection.as_ref().and_then(|pending| {
2451 let mut selection_start = pending.start.to_display_point(&display_map);
2452 let mut selection_end = pending.end.to_display_point(&display_map);
2453 if pending.reversed {
2454 mem::swap(&mut selection_start, &mut selection_end);
2455 }
2456 if selection_start <= range.end || selection_end <= range.end {
2457 Some(selection_start..selection_end)
2458 } else {
2459 None
2460 }
2461 })
2462 } else {
2463 None
2464 };
2465 selections
2466 .into_iter()
2467 .skip(start_index)
2468 .map(move |s| s.display_range(&display_map))
2469 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2470 .chain(pending_selection)
2471 }
2472
2473 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2474 match selections.binary_search_by_key(&start, |probe| probe.start) {
2475 Ok(index) => index,
2476 Err(index) => {
2477 if index > 0 && selections[index - 1].end > start {
2478 index - 1
2479 } else {
2480 index
2481 }
2482 }
2483 }
2484 }
2485
2486 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2487 where
2488 D: 'a + TextDimension<'a> + Ord,
2489 {
2490 let buffer = self.buffer.read(cx);
2491 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2492 let mut pending_selection = self.pending_selection(cx);
2493 iter::from_fn(move || {
2494 if let Some(pending) = pending_selection.as_mut() {
2495 while let Some(next_selection) = selections.peek() {
2496 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2497 let next_selection = selections.next().unwrap();
2498 if next_selection.start < pending.start {
2499 pending.start = next_selection.start;
2500 }
2501 if next_selection.end > pending.end {
2502 pending.end = next_selection.end;
2503 }
2504 } else if next_selection.end < pending.start {
2505 return selections.next();
2506 } else {
2507 break;
2508 }
2509 }
2510
2511 pending_selection.take()
2512 } else {
2513 selections.next()
2514 }
2515 })
2516 }
2517
2518 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2519 where
2520 D: 'a + TextDimension<'a>,
2521 {
2522 let buffer = self.buffer.read(cx);
2523 self.pending_selection.as_ref().map(|selection| Selection {
2524 id: selection.id,
2525 start: selection.start.summary::<D, _>(buffer),
2526 end: selection.end.summary::<D, _>(buffer),
2527 reversed: selection.reversed,
2528 goal: selection.goal,
2529 })
2530 }
2531
2532 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2533 let mut selection_count = self.selection_set(cx).len();
2534 if self.pending_selection.is_some() {
2535 selection_count += 1;
2536 }
2537 selection_count
2538 }
2539
2540 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2541 where
2542 T: 'a + TextDimension<'a>,
2543 {
2544 let buffer = self.buffer.read(cx);
2545 self.selection_set(cx)
2546 .oldest_selection(buffer)
2547 .or_else(|| self.pending_selection(cx))
2548 .unwrap()
2549 }
2550
2551 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2552 where
2553 T: 'a + TextDimension<'a>,
2554 {
2555 let buffer = self.buffer.read(cx);
2556 self.pending_selection(cx)
2557 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2558 .unwrap()
2559 }
2560
2561 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2562 self.buffer
2563 .read(cx)
2564 .selection_set(self.selection_set_id)
2565 .unwrap()
2566 }
2567
2568 fn update_selections<T>(
2569 &mut self,
2570 mut selections: Vec<Selection<T>>,
2571 autoscroll: bool,
2572 cx: &mut ViewContext<Self>,
2573 ) where
2574 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2575 {
2576 // Merge overlapping selections.
2577 let buffer = self.buffer.read(cx);
2578 let mut i = 1;
2579 while i < selections.len() {
2580 if selections[i - 1].end >= selections[i].start {
2581 let removed = selections.remove(i);
2582 if removed.start < selections[i - 1].start {
2583 selections[i - 1].start = removed.start;
2584 }
2585 if removed.end > selections[i - 1].end {
2586 selections[i - 1].end = removed.end;
2587 }
2588 } else {
2589 i += 1;
2590 }
2591 }
2592
2593 self.pending_selection = None;
2594 self.add_selections_state = None;
2595 self.select_larger_syntax_node_stack.clear();
2596 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2597 let all_selections_inside_autoclose_ranges =
2598 if selections.len() == autoclose_pair_state.ranges.len() {
2599 selections
2600 .iter()
2601 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2602 .all(|(selection, autoclose_range)| {
2603 let head = selection.head().to_point(&*buffer);
2604 autoclose_range.start <= head && autoclose_range.end >= head
2605 })
2606 } else {
2607 false
2608 };
2609
2610 if all_selections_inside_autoclose_ranges {
2611 break;
2612 } else {
2613 self.autoclose_stack.pop();
2614 }
2615 }
2616
2617 if autoscroll {
2618 self.request_autoscroll(cx);
2619 }
2620 self.pause_cursor_blinking(cx);
2621
2622 self.buffer.update(cx, |buffer, cx| {
2623 buffer
2624 .update_selection_set(self.selection_set_id, &selections, cx)
2625 .unwrap();
2626 });
2627 }
2628
2629 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2630 self.autoscroll_requested = true;
2631 cx.notify();
2632 }
2633
2634 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2635 self.end_selection(cx);
2636 self.buffer.update(cx, |buffer, _| {
2637 buffer
2638 .start_transaction(Some(self.selection_set_id))
2639 .unwrap()
2640 });
2641 }
2642
2643 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2644 self.buffer.update(cx, |buffer, cx| {
2645 buffer
2646 .end_transaction(Some(self.selection_set_id), cx)
2647 .unwrap()
2648 });
2649 }
2650
2651 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2652 log::info!("Editor::page_up");
2653 }
2654
2655 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2656 log::info!("Editor::page_down");
2657 }
2658
2659 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2660 let mut fold_ranges = Vec::new();
2661
2662 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2663 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2664 for selection in selections {
2665 let range = selection.display_range(&display_map).sorted();
2666 let buffer_start_row = range.start.to_point(&display_map).row;
2667
2668 for row in (0..=range.end.row()).rev() {
2669 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2670 let fold_range = self.foldable_range_for_line(&display_map, row);
2671 if fold_range.end.row >= buffer_start_row {
2672 fold_ranges.push(fold_range);
2673 if row <= range.start.row() {
2674 break;
2675 }
2676 }
2677 }
2678 }
2679 }
2680
2681 self.fold_ranges(fold_ranges, cx);
2682 }
2683
2684 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2685 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2686 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2687 let buffer = self.buffer.read(cx);
2688 let ranges = selections
2689 .iter()
2690 .map(|s| {
2691 let range = s.display_range(&display_map).sorted();
2692 let mut start = range.start.to_point(&display_map);
2693 let mut end = range.end.to_point(&display_map);
2694 start.column = 0;
2695 end.column = buffer.line_len(end.row);
2696 start..end
2697 })
2698 .collect::<Vec<_>>();
2699 self.unfold_ranges(ranges, cx);
2700 }
2701
2702 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2703 let max_point = display_map.max_point();
2704 if display_row >= max_point.row() {
2705 false
2706 } else {
2707 let (start_indent, is_blank) = display_map.line_indent(display_row);
2708 if is_blank {
2709 false
2710 } else {
2711 for display_row in display_row + 1..=max_point.row() {
2712 let (indent, is_blank) = display_map.line_indent(display_row);
2713 if !is_blank {
2714 return indent > start_indent;
2715 }
2716 }
2717 false
2718 }
2719 }
2720 }
2721
2722 fn foldable_range_for_line(
2723 &self,
2724 display_map: &DisplayMapSnapshot,
2725 start_row: u32,
2726 ) -> Range<Point> {
2727 let max_point = display_map.max_point();
2728
2729 let (start_indent, _) = display_map.line_indent(start_row);
2730 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2731 let mut end = None;
2732 for row in start_row + 1..=max_point.row() {
2733 let (indent, is_blank) = display_map.line_indent(row);
2734 if !is_blank && indent <= start_indent {
2735 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2736 break;
2737 }
2738 }
2739
2740 let end = end.unwrap_or(max_point);
2741 return start.to_point(display_map)..end.to_point(display_map);
2742 }
2743
2744 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2745 let selections = self.selections::<Point>(cx);
2746 let ranges = selections.map(|s| s.start..s.end).collect();
2747 self.fold_ranges(ranges, cx);
2748 }
2749
2750 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2751 if !ranges.is_empty() {
2752 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2753 self.autoscroll_requested = true;
2754 cx.notify();
2755 }
2756 }
2757
2758 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2759 if !ranges.is_empty() {
2760 self.display_map
2761 .update(cx, |map, cx| map.unfold(ranges, cx));
2762 self.autoscroll_requested = true;
2763 cx.notify();
2764 }
2765 }
2766
2767 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2768 self.display_map
2769 .update(cx, |map, cx| map.snapshot(cx))
2770 .longest_row()
2771 }
2772
2773 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2774 self.display_map
2775 .update(cx, |map, cx| map.snapshot(cx))
2776 .max_point()
2777 }
2778
2779 pub fn text(&self, cx: &AppContext) -> String {
2780 self.buffer.read(cx).text()
2781 }
2782
2783 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2784 self.display_map
2785 .update(cx, |map, cx| map.snapshot(cx))
2786 .text()
2787 }
2788
2789 // pub fn font_size(&self) -> f32 {
2790 // self.settings.font_size
2791 // }
2792
2793 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2794 self.display_map
2795 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2796 }
2797
2798 fn next_blink_epoch(&mut self) -> usize {
2799 self.blink_epoch += 1;
2800 self.blink_epoch
2801 }
2802
2803 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2804 self.show_local_cursors = true;
2805 cx.notify();
2806
2807 let epoch = self.next_blink_epoch();
2808 cx.spawn(|this, mut cx| {
2809 let this = this.downgrade();
2810 async move {
2811 Timer::after(CURSOR_BLINK_INTERVAL).await;
2812 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2813 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2814 }
2815 }
2816 })
2817 .detach();
2818 }
2819
2820 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2821 if epoch == self.blink_epoch {
2822 self.blinking_paused = false;
2823 self.blink_cursors(epoch, cx);
2824 }
2825 }
2826
2827 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2828 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2829 self.show_local_cursors = !self.show_local_cursors;
2830 cx.notify();
2831
2832 let epoch = self.next_blink_epoch();
2833 cx.spawn(|this, mut cx| {
2834 let this = this.downgrade();
2835 async move {
2836 Timer::after(CURSOR_BLINK_INTERVAL).await;
2837 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2838 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2839 }
2840 }
2841 })
2842 .detach();
2843 }
2844 }
2845
2846 pub fn show_local_cursors(&self) -> bool {
2847 self.show_local_cursors
2848 }
2849
2850 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2851 self.refresh_active_diagnostics(cx);
2852 cx.notify();
2853 }
2854
2855 fn on_buffer_event(
2856 &mut self,
2857 _: ModelHandle<Buffer>,
2858 event: &language::Event,
2859 cx: &mut ViewContext<Self>,
2860 ) {
2861 match event {
2862 language::Event::Edited => cx.emit(Event::Edited),
2863 language::Event::Dirtied => cx.emit(Event::Dirtied),
2864 language::Event::Saved => cx.emit(Event::Saved),
2865 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2866 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2867 language::Event::Closed => cx.emit(Event::Closed),
2868 language::Event::Reparsed => {}
2869 }
2870 }
2871
2872 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2873 cx.notify();
2874 }
2875}
2876
2877impl Snapshot {
2878 pub fn is_empty(&self) -> bool {
2879 self.display_snapshot.is_empty()
2880 }
2881
2882 pub fn is_focused(&self) -> bool {
2883 self.is_focused
2884 }
2885
2886 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2887 self.placeholder_text.as_ref()
2888 }
2889
2890 pub fn buffer_row_count(&self) -> u32 {
2891 self.display_snapshot.buffer_row_count()
2892 }
2893
2894 pub fn buffer_rows<'a>(&'a self, start_row: u32, cx: &'a AppContext) -> BufferRows<'a> {
2895 self.display_snapshot.buffer_rows(start_row, Some(cx))
2896 }
2897
2898 pub fn chunks<'a>(
2899 &'a self,
2900 display_rows: Range<u32>,
2901 theme: Option<&'a SyntaxTheme>,
2902 cx: &'a AppContext,
2903 ) -> display_map::Chunks<'a> {
2904 self.display_snapshot.chunks(display_rows, theme, cx)
2905 }
2906
2907 pub fn scroll_position(&self) -> Vector2F {
2908 compute_scroll_position(
2909 &self.display_snapshot,
2910 self.scroll_position,
2911 &self.scroll_top_anchor,
2912 )
2913 }
2914
2915 pub fn max_point(&self) -> DisplayPoint {
2916 self.display_snapshot.max_point()
2917 }
2918
2919 pub fn longest_row(&self) -> u32 {
2920 self.display_snapshot.longest_row()
2921 }
2922
2923 pub fn line_len(&self, display_row: u32) -> u32 {
2924 self.display_snapshot.line_len(display_row)
2925 }
2926
2927 pub fn line(&self, display_row: u32) -> String {
2928 self.display_snapshot.line(display_row)
2929 }
2930
2931 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2932 self.display_snapshot.prev_row_boundary(point)
2933 }
2934
2935 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
2936 self.display_snapshot.next_row_boundary(point)
2937 }
2938}
2939
2940impl EditorSettings {
2941 #[cfg(any(test, feature = "test-support"))]
2942 pub fn test(cx: &AppContext) -> Self {
2943 Self {
2944 tab_size: 4,
2945 style: {
2946 let font_cache: &gpui::FontCache = cx.font_cache();
2947 let font_family_name = Arc::from("Monaco");
2948 let font_properties = Default::default();
2949 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
2950 let font_id = font_cache
2951 .select_font(font_family_id, &font_properties)
2952 .unwrap();
2953 EditorStyle {
2954 text: gpui::fonts::TextStyle {
2955 font_family_name,
2956 font_family_id,
2957 font_id,
2958 font_size: 14.,
2959 color: gpui::color::Color::from_u32(0xff0000ff),
2960 font_properties,
2961 underline: None,
2962 },
2963 placeholder_text: None,
2964 background: Default::default(),
2965 gutter_background: Default::default(),
2966 active_line_background: Default::default(),
2967 line_number: Default::default(),
2968 line_number_active: Default::default(),
2969 selection: Default::default(),
2970 guest_selections: Default::default(),
2971 syntax: Default::default(),
2972 error_diagnostic: Default::default(),
2973 invalid_error_diagnostic: Default::default(),
2974 warning_diagnostic: Default::default(),
2975 invalid_warning_diagnostic: Default::default(),
2976 information_diagnostic: Default::default(),
2977 invalid_information_diagnostic: Default::default(),
2978 hint_diagnostic: Default::default(),
2979 invalid_hint_diagnostic: Default::default(),
2980 }
2981 },
2982 }
2983 }
2984}
2985
2986fn compute_scroll_position(
2987 snapshot: &DisplayMapSnapshot,
2988 mut scroll_position: Vector2F,
2989 scroll_top_anchor: &Anchor,
2990) -> Vector2F {
2991 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
2992 scroll_position.set_y(scroll_top + scroll_position.y());
2993 scroll_position
2994}
2995
2996pub enum Event {
2997 Activate,
2998 Edited,
2999 Blurred,
3000 Dirtied,
3001 Saved,
3002 FileHandleChanged,
3003 Closed,
3004}
3005
3006impl Entity for Editor {
3007 type Event = Event;
3008
3009 fn release(&mut self, cx: &mut MutableAppContext) {
3010 self.buffer.update(cx, |buffer, cx| {
3011 buffer
3012 .remove_selection_set(self.selection_set_id, cx)
3013 .unwrap();
3014 });
3015 }
3016}
3017
3018impl View for Editor {
3019 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3020 let settings = self.build_settings.borrow_mut()(cx);
3021 self.display_map.update(cx, |map, cx| {
3022 map.set_font(
3023 settings.style.text.font_id,
3024 settings.style.text.font_size,
3025 cx,
3026 )
3027 });
3028 EditorElement::new(self.handle.clone(), settings).boxed()
3029 }
3030
3031 fn ui_name() -> &'static str {
3032 "Editor"
3033 }
3034
3035 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3036 self.focused = true;
3037 self.blink_cursors(self.blink_epoch, cx);
3038 self.buffer.update(cx, |buffer, cx| {
3039 buffer
3040 .set_active_selection_set(Some(self.selection_set_id), cx)
3041 .unwrap();
3042 });
3043 }
3044
3045 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3046 self.focused = false;
3047 self.show_local_cursors = false;
3048 self.buffer.update(cx, |buffer, cx| {
3049 buffer.set_active_selection_set(None, cx).unwrap();
3050 });
3051 cx.emit(Event::Blurred);
3052 cx.notify();
3053 }
3054
3055 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3056 let mut cx = Self::default_keymap_context();
3057 let mode = match self.mode {
3058 EditorMode::SingleLine => "single_line",
3059 EditorMode::AutoHeight { .. } => "auto_height",
3060 EditorMode::Full => "full",
3061 };
3062 cx.map.insert("mode".into(), mode.into());
3063 cx
3064 }
3065}
3066
3067impl SelectionExt for Selection<Point> {
3068 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3069 let start = self.start.to_display_point(map);
3070 let end = self.end.to_display_point(map);
3071 if self.reversed {
3072 end..start
3073 } else {
3074 start..end
3075 }
3076 }
3077
3078 fn spanned_rows(
3079 &self,
3080 include_end_if_at_line_start: bool,
3081 map: &DisplayMapSnapshot,
3082 ) -> SpannedRows {
3083 let display_start = self.start.to_display_point(map);
3084 let mut display_end = self.end.to_display_point(map);
3085 if !include_end_if_at_line_start
3086 && display_end.row() != map.max_point().row()
3087 && display_start.row() != display_end.row()
3088 && display_end.column() == 0
3089 {
3090 *display_end.row_mut() -= 1;
3091 }
3092
3093 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3094 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3095
3096 SpannedRows {
3097 buffer_rows: buffer_start.row..buffer_end.row + 1,
3098 display_rows: display_start.row()..display_end.row() + 1,
3099 }
3100 }
3101}
3102
3103pub fn diagnostic_style(
3104 severity: DiagnosticSeverity,
3105 valid: bool,
3106 style: &EditorStyle,
3107) -> DiagnosticStyle {
3108 match (severity, valid) {
3109 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3110 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3111 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3112 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3113 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3114 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3115 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3116 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3117 _ => Default::default(),
3118 }
3119}
3120
3121#[cfg(test)]
3122mod tests {
3123 use super::*;
3124 use crate::test::sample_text;
3125 use buffer::Point;
3126 use unindent::Unindent;
3127
3128 #[gpui::test]
3129 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3130 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3131 let settings = EditorSettings::test(cx);
3132 let (_, editor) =
3133 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3134
3135 editor.update(cx, |view, cx| {
3136 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3137 });
3138
3139 assert_eq!(
3140 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3141 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3142 );
3143
3144 editor.update(cx, |view, cx| {
3145 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3146 });
3147
3148 assert_eq!(
3149 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3150 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3151 );
3152
3153 editor.update(cx, |view, cx| {
3154 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3155 });
3156
3157 assert_eq!(
3158 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3159 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3160 );
3161
3162 editor.update(cx, |view, cx| {
3163 view.end_selection(cx);
3164 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3165 });
3166
3167 assert_eq!(
3168 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3169 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3170 );
3171
3172 editor.update(cx, |view, cx| {
3173 view.begin_selection(DisplayPoint::new(3, 3), true, cx);
3174 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3175 });
3176
3177 assert_eq!(
3178 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3179 [
3180 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3181 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3182 ]
3183 );
3184
3185 editor.update(cx, |view, cx| {
3186 view.end_selection(cx);
3187 });
3188
3189 assert_eq!(
3190 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3191 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3192 );
3193 }
3194
3195 #[gpui::test]
3196 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3197 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3198 let settings = EditorSettings::test(cx);
3199 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3200
3201 view.update(cx, |view, cx| {
3202 view.begin_selection(DisplayPoint::new(2, 2), false, cx);
3203 assert_eq!(
3204 view.selection_ranges(cx),
3205 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3206 );
3207 });
3208
3209 view.update(cx, |view, cx| {
3210 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3211 assert_eq!(
3212 view.selection_ranges(cx),
3213 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3214 );
3215 });
3216
3217 view.update(cx, |view, cx| {
3218 view.cancel(&Cancel, cx);
3219 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3220 assert_eq!(
3221 view.selection_ranges(cx),
3222 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3223 );
3224 });
3225 }
3226
3227 #[gpui::test]
3228 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3229 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3230 let settings = EditorSettings::test(cx);
3231 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3232
3233 view.update(cx, |view, cx| {
3234 view.begin_selection(DisplayPoint::new(3, 4), false, cx);
3235 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3236 view.end_selection(cx);
3237
3238 view.begin_selection(DisplayPoint::new(0, 1), true, cx);
3239 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3240 view.end_selection(cx);
3241 assert_eq!(
3242 view.selection_ranges(cx),
3243 [
3244 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3245 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3246 ]
3247 );
3248 });
3249
3250 view.update(cx, |view, cx| {
3251 view.cancel(&Cancel, cx);
3252 assert_eq!(
3253 view.selection_ranges(cx),
3254 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3255 );
3256 });
3257
3258 view.update(cx, |view, cx| {
3259 view.cancel(&Cancel, cx);
3260 assert_eq!(
3261 view.selection_ranges(cx),
3262 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3263 );
3264 });
3265 }
3266
3267 #[gpui::test]
3268 fn test_fold(cx: &mut gpui::MutableAppContext) {
3269 let buffer = cx.add_model(|cx| {
3270 Buffer::new(
3271 0,
3272 "
3273 impl Foo {
3274 // Hello!
3275
3276 fn a() {
3277 1
3278 }
3279
3280 fn b() {
3281 2
3282 }
3283
3284 fn c() {
3285 3
3286 }
3287 }
3288 "
3289 .unindent(),
3290 cx,
3291 )
3292 });
3293 let settings = EditorSettings::test(&cx);
3294 let (_, view) = cx.add_window(Default::default(), |cx| {
3295 build_editor(buffer.clone(), settings, cx)
3296 });
3297
3298 view.update(cx, |view, cx| {
3299 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3300 .unwrap();
3301 view.fold(&Fold, cx);
3302 assert_eq!(
3303 view.display_text(cx),
3304 "
3305 impl Foo {
3306 // Hello!
3307
3308 fn a() {
3309 1
3310 }
3311
3312 fn b() {…
3313 }
3314
3315 fn c() {…
3316 }
3317 }
3318 "
3319 .unindent(),
3320 );
3321
3322 view.fold(&Fold, cx);
3323 assert_eq!(
3324 view.display_text(cx),
3325 "
3326 impl Foo {…
3327 }
3328 "
3329 .unindent(),
3330 );
3331
3332 view.unfold(&Unfold, cx);
3333 assert_eq!(
3334 view.display_text(cx),
3335 "
3336 impl Foo {
3337 // Hello!
3338
3339 fn a() {
3340 1
3341 }
3342
3343 fn b() {…
3344 }
3345
3346 fn c() {…
3347 }
3348 }
3349 "
3350 .unindent(),
3351 );
3352
3353 view.unfold(&Unfold, cx);
3354 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3355 });
3356 }
3357
3358 #[gpui::test]
3359 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3360 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3361 let settings = EditorSettings::test(&cx);
3362 let (_, view) = cx.add_window(Default::default(), |cx| {
3363 build_editor(buffer.clone(), settings, cx)
3364 });
3365
3366 buffer.update(cx, |buffer, cx| {
3367 buffer.edit(
3368 vec![
3369 Point::new(1, 0)..Point::new(1, 0),
3370 Point::new(1, 1)..Point::new(1, 1),
3371 ],
3372 "\t",
3373 cx,
3374 );
3375 });
3376
3377 view.update(cx, |view, cx| {
3378 assert_eq!(
3379 view.selection_ranges(cx),
3380 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3381 );
3382
3383 view.move_down(&MoveDown, cx);
3384 assert_eq!(
3385 view.selection_ranges(cx),
3386 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3387 );
3388
3389 view.move_right(&MoveRight, cx);
3390 assert_eq!(
3391 view.selection_ranges(cx),
3392 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3393 );
3394
3395 view.move_left(&MoveLeft, cx);
3396 assert_eq!(
3397 view.selection_ranges(cx),
3398 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3399 );
3400
3401 view.move_up(&MoveUp, cx);
3402 assert_eq!(
3403 view.selection_ranges(cx),
3404 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3405 );
3406
3407 view.move_to_end(&MoveToEnd, cx);
3408 assert_eq!(
3409 view.selection_ranges(cx),
3410 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3411 );
3412
3413 view.move_to_beginning(&MoveToBeginning, cx);
3414 assert_eq!(
3415 view.selection_ranges(cx),
3416 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3417 );
3418
3419 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3420 .unwrap();
3421 view.select_to_beginning(&SelectToBeginning, cx);
3422 assert_eq!(
3423 view.selection_ranges(cx),
3424 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3425 );
3426
3427 view.select_to_end(&SelectToEnd, cx);
3428 assert_eq!(
3429 view.selection_ranges(cx),
3430 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3431 );
3432 });
3433 }
3434
3435 #[gpui::test]
3436 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3437 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3438 let settings = EditorSettings::test(&cx);
3439 let (_, view) = cx.add_window(Default::default(), |cx| {
3440 build_editor(buffer.clone(), settings, cx)
3441 });
3442
3443 assert_eq!('ⓐ'.len_utf8(), 3);
3444 assert_eq!('α'.len_utf8(), 2);
3445
3446 view.update(cx, |view, cx| {
3447 view.fold_ranges(
3448 vec![
3449 Point::new(0, 6)..Point::new(0, 12),
3450 Point::new(1, 2)..Point::new(1, 4),
3451 Point::new(2, 4)..Point::new(2, 8),
3452 ],
3453 cx,
3454 );
3455 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3456
3457 view.move_right(&MoveRight, cx);
3458 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3459 view.move_right(&MoveRight, cx);
3460 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3461 view.move_right(&MoveRight, cx);
3462 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3463
3464 view.move_down(&MoveDown, cx);
3465 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3466 view.move_left(&MoveLeft, cx);
3467 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3468 view.move_left(&MoveLeft, cx);
3469 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3470
3471 view.move_down(&MoveDown, cx);
3472 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3473 view.move_right(&MoveRight, cx);
3474 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3475 view.move_right(&MoveRight, cx);
3476 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3477 view.move_right(&MoveRight, cx);
3478 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3479
3480 view.move_up(&MoveUp, cx);
3481 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3482 view.move_up(&MoveUp, cx);
3483 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3484 view.move_left(&MoveLeft, cx);
3485 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3486 view.move_left(&MoveLeft, cx);
3487 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3488 view.move_left(&MoveLeft, cx);
3489 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3490 });
3491 }
3492
3493 #[gpui::test]
3494 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3495 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3496 let settings = EditorSettings::test(&cx);
3497 let (_, view) = cx.add_window(Default::default(), |cx| {
3498 build_editor(buffer.clone(), settings, cx)
3499 });
3500 view.update(cx, |view, cx| {
3501 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3502 .unwrap();
3503
3504 view.move_down(&MoveDown, cx);
3505 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3506
3507 view.move_down(&MoveDown, cx);
3508 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3509
3510 view.move_down(&MoveDown, cx);
3511 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3512
3513 view.move_down(&MoveDown, cx);
3514 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3515
3516 view.move_up(&MoveUp, cx);
3517 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3518
3519 view.move_up(&MoveUp, cx);
3520 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3521 });
3522 }
3523
3524 #[gpui::test]
3525 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3526 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3527 let settings = EditorSettings::test(&cx);
3528 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3529 view.update(cx, |view, cx| {
3530 view.select_display_ranges(
3531 &[
3532 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3533 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3534 ],
3535 cx,
3536 )
3537 .unwrap();
3538 });
3539
3540 view.update(cx, |view, cx| {
3541 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3542 assert_eq!(
3543 view.selection_ranges(cx),
3544 &[
3545 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3546 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3547 ]
3548 );
3549 });
3550
3551 view.update(cx, |view, cx| {
3552 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3553 assert_eq!(
3554 view.selection_ranges(cx),
3555 &[
3556 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3557 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3558 ]
3559 );
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_end_of_line(&MoveToEndOfLine, cx);
3575 assert_eq!(
3576 view.selection_ranges(cx),
3577 &[
3578 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3579 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3580 ]
3581 );
3582 });
3583
3584 // Moving to the end of line again is a no-op.
3585 view.update(cx, |view, cx| {
3586 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3587 assert_eq!(
3588 view.selection_ranges(cx),
3589 &[
3590 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3591 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3592 ]
3593 );
3594 });
3595
3596 view.update(cx, |view, cx| {
3597 view.move_left(&MoveLeft, cx);
3598 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3599 assert_eq!(
3600 view.selection_ranges(cx),
3601 &[
3602 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3603 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3604 ]
3605 );
3606 });
3607
3608 view.update(cx, |view, cx| {
3609 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3610 assert_eq!(
3611 view.selection_ranges(cx),
3612 &[
3613 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3614 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3615 ]
3616 );
3617 });
3618
3619 view.update(cx, |view, 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_end_of_line(&SelectToEndOfLine, cx);
3632 assert_eq!(
3633 view.selection_ranges(cx),
3634 &[
3635 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3636 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3637 ]
3638 );
3639 });
3640
3641 view.update(cx, |view, cx| {
3642 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3643 assert_eq!(view.display_text(cx), "ab\n de");
3644 assert_eq!(
3645 view.selection_ranges(cx),
3646 &[
3647 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3648 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3649 ]
3650 );
3651 });
3652
3653 view.update(cx, |view, cx| {
3654 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3655 assert_eq!(view.display_text(cx), "\n");
3656 assert_eq!(
3657 view.selection_ranges(cx),
3658 &[
3659 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3660 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3661 ]
3662 );
3663 });
3664 }
3665
3666 #[gpui::test]
3667 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3668 let buffer =
3669 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3670 let settings = EditorSettings::test(&cx);
3671 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3672 view.update(cx, |view, cx| {
3673 view.select_display_ranges(
3674 &[
3675 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3676 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3677 ],
3678 cx,
3679 )
3680 .unwrap();
3681 });
3682
3683 view.update(cx, |view, cx| {
3684 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3685 assert_eq!(
3686 view.selection_ranges(cx),
3687 &[
3688 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3689 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3690 ]
3691 );
3692 });
3693
3694 view.update(cx, |view, cx| {
3695 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3696 assert_eq!(
3697 view.selection_ranges(cx),
3698 &[
3699 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3700 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3701 ]
3702 );
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, 4)..DisplayPoint::new(0, 4),
3711 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
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, 0)..DisplayPoint::new(0, 0),
3722 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
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, 0)..DisplayPoint::new(0, 0),
3733 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3734 ]
3735 );
3736 });
3737
3738 view.update(cx, |view, cx| {
3739 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3740 assert_eq!(
3741 view.selection_ranges(cx),
3742 &[
3743 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3744 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3745 ]
3746 );
3747 });
3748
3749 view.update(cx, |view, cx| {
3750 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3751 assert_eq!(
3752 view.selection_ranges(cx),
3753 &[
3754 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3755 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
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, 9)..DisplayPoint::new(0, 9),
3766 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3767 ]
3768 );
3769 });
3770
3771 view.update(cx, |view, cx| {
3772 view.move_right(&MoveRight, cx);
3773 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3774 assert_eq!(
3775 view.selection_ranges(cx),
3776 &[
3777 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3778 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3779 ]
3780 );
3781 });
3782
3783 view.update(cx, |view, cx| {
3784 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3785 assert_eq!(
3786 view.selection_ranges(cx),
3787 &[
3788 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3789 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3790 ]
3791 );
3792 });
3793
3794 view.update(cx, |view, cx| {
3795 view.select_to_next_word_boundary(&SelectToNextWordBoundary, 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
3806 #[gpui::test]
3807 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3808 let buffer =
3809 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3810 let settings = EditorSettings::test(&cx);
3811 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3812
3813 view.update(cx, |view, cx| {
3814 view.set_wrap_width(140., cx);
3815 assert_eq!(
3816 view.display_text(cx),
3817 "use one::{\n two::three::\n four::five\n};"
3818 );
3819
3820 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3821 .unwrap();
3822
3823 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3824 assert_eq!(
3825 view.selection_ranges(cx),
3826 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3827 );
3828
3829 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3830 assert_eq!(
3831 view.selection_ranges(cx),
3832 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3833 );
3834
3835 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3836 assert_eq!(
3837 view.selection_ranges(cx),
3838 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3839 );
3840
3841 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3842 assert_eq!(
3843 view.selection_ranges(cx),
3844 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3845 );
3846
3847 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3848 assert_eq!(
3849 view.selection_ranges(cx),
3850 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3851 );
3852
3853 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3854 assert_eq!(
3855 view.selection_ranges(cx),
3856 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3857 );
3858 });
3859 }
3860
3861 #[gpui::test]
3862 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3863 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3864 let settings = EditorSettings::test(&cx);
3865 let (_, view) = cx.add_window(Default::default(), |cx| {
3866 build_editor(buffer.clone(), settings, cx)
3867 });
3868
3869 view.update(cx, |view, cx| {
3870 view.select_display_ranges(
3871 &[
3872 // an empty selection - the preceding word fragment is deleted
3873 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3874 // characters selected - they are deleted
3875 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3876 ],
3877 cx,
3878 )
3879 .unwrap();
3880 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3881 });
3882
3883 assert_eq!(buffer.read(cx).text(), "e two te four");
3884
3885 view.update(cx, |view, cx| {
3886 view.select_display_ranges(
3887 &[
3888 // an empty selection - the following word fragment is deleted
3889 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3890 // characters selected - they are deleted
3891 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3892 ],
3893 cx,
3894 )
3895 .unwrap();
3896 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3897 });
3898
3899 assert_eq!(buffer.read(cx).text(), "e t te our");
3900 }
3901
3902 #[gpui::test]
3903 fn test_newline(cx: &mut gpui::MutableAppContext) {
3904 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
3905 let settings = EditorSettings::test(&cx);
3906 let (_, view) = cx.add_window(Default::default(), |cx| {
3907 build_editor(buffer.clone(), settings, cx)
3908 });
3909
3910 view.update(cx, |view, cx| {
3911 view.select_display_ranges(
3912 &[
3913 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3914 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3915 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
3916 ],
3917 cx,
3918 )
3919 .unwrap();
3920
3921 view.newline(&Newline, cx);
3922 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
3923 });
3924 }
3925
3926 #[gpui::test]
3927 fn test_backspace(cx: &mut gpui::MutableAppContext) {
3928 let buffer = cx.add_model(|cx| {
3929 Buffer::new(
3930 0,
3931 "one two three\nfour five six\nseven eight nine\nten\n",
3932 cx,
3933 )
3934 });
3935 let settings = EditorSettings::test(&cx);
3936 let (_, view) = cx.add_window(Default::default(), |cx| {
3937 build_editor(buffer.clone(), settings, cx)
3938 });
3939
3940 view.update(cx, |view, cx| {
3941 view.select_display_ranges(
3942 &[
3943 // an empty selection - the preceding character is deleted
3944 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3945 // one character selected - it is deleted
3946 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3947 // a line suffix selected - it is deleted
3948 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3949 ],
3950 cx,
3951 )
3952 .unwrap();
3953 view.backspace(&Backspace, cx);
3954 });
3955
3956 assert_eq!(
3957 buffer.read(cx).text(),
3958 "oe two three\nfou five six\nseven ten\n"
3959 );
3960 }
3961
3962 #[gpui::test]
3963 fn test_delete(cx: &mut gpui::MutableAppContext) {
3964 let buffer = cx.add_model(|cx| {
3965 Buffer::new(
3966 0,
3967 "one two three\nfour five six\nseven eight nine\nten\n",
3968 cx,
3969 )
3970 });
3971 let settings = EditorSettings::test(&cx);
3972 let (_, view) = cx.add_window(Default::default(), |cx| {
3973 build_editor(buffer.clone(), settings, cx)
3974 });
3975
3976 view.update(cx, |view, cx| {
3977 view.select_display_ranges(
3978 &[
3979 // an empty selection - the following character is deleted
3980 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3981 // one character selected - it is deleted
3982 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
3983 // a line suffix selected - it is deleted
3984 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
3985 ],
3986 cx,
3987 )
3988 .unwrap();
3989 view.delete(&Delete, cx);
3990 });
3991
3992 assert_eq!(
3993 buffer.read(cx).text(),
3994 "on two three\nfou five six\nseven ten\n"
3995 );
3996 }
3997
3998 #[gpui::test]
3999 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4000 let settings = EditorSettings::test(&cx);
4001 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4002 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4003 view.update(cx, |view, cx| {
4004 view.select_display_ranges(
4005 &[
4006 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4007 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4008 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4009 ],
4010 cx,
4011 )
4012 .unwrap();
4013 view.delete_line(&DeleteLine, cx);
4014 assert_eq!(view.display_text(cx), "ghi");
4015 assert_eq!(
4016 view.selection_ranges(cx),
4017 vec![
4018 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4019 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4020 ]
4021 );
4022 });
4023
4024 let settings = EditorSettings::test(&cx);
4025 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4026 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4027 view.update(cx, |view, cx| {
4028 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4029 .unwrap();
4030 view.delete_line(&DeleteLine, cx);
4031 assert_eq!(view.display_text(cx), "ghi\n");
4032 assert_eq!(
4033 view.selection_ranges(cx),
4034 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4035 );
4036 });
4037 }
4038
4039 #[gpui::test]
4040 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4041 let settings = EditorSettings::test(&cx);
4042 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4043 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4044 view.update(cx, |view, cx| {
4045 view.select_display_ranges(
4046 &[
4047 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4048 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4049 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4050 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4051 ],
4052 cx,
4053 )
4054 .unwrap();
4055 view.duplicate_line(&DuplicateLine, cx);
4056 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4057 assert_eq!(
4058 view.selection_ranges(cx),
4059 vec![
4060 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4061 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4062 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4063 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4064 ]
4065 );
4066 });
4067
4068 let settings = EditorSettings::test(&cx);
4069 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4070 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4071 view.update(cx, |view, cx| {
4072 view.select_display_ranges(
4073 &[
4074 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4075 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4076 ],
4077 cx,
4078 )
4079 .unwrap();
4080 view.duplicate_line(&DuplicateLine, cx);
4081 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4082 assert_eq!(
4083 view.selection_ranges(cx),
4084 vec![
4085 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4086 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4087 ]
4088 );
4089 });
4090 }
4091
4092 #[gpui::test]
4093 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4094 let settings = EditorSettings::test(&cx);
4095 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4096 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4097 view.update(cx, |view, cx| {
4098 view.fold_ranges(
4099 vec![
4100 Point::new(0, 2)..Point::new(1, 2),
4101 Point::new(2, 3)..Point::new(4, 1),
4102 Point::new(7, 0)..Point::new(8, 4),
4103 ],
4104 cx,
4105 );
4106 view.select_display_ranges(
4107 &[
4108 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4109 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4110 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4111 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4112 ],
4113 cx,
4114 )
4115 .unwrap();
4116 assert_eq!(
4117 view.display_text(cx),
4118 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4119 );
4120
4121 view.move_line_up(&MoveLineUp, cx);
4122 assert_eq!(
4123 view.display_text(cx),
4124 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4125 );
4126 assert_eq!(
4127 view.selection_ranges(cx),
4128 vec![
4129 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4130 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4131 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4132 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4133 ]
4134 );
4135 });
4136
4137 view.update(cx, |view, cx| {
4138 view.move_line_down(&MoveLineDown, cx);
4139 assert_eq!(
4140 view.display_text(cx),
4141 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4142 );
4143 assert_eq!(
4144 view.selection_ranges(cx),
4145 vec![
4146 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4147 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4148 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4149 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4150 ]
4151 );
4152 });
4153
4154 view.update(cx, |view, cx| {
4155 view.move_line_down(&MoveLineDown, cx);
4156 assert_eq!(
4157 view.display_text(cx),
4158 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4159 );
4160 assert_eq!(
4161 view.selection_ranges(cx),
4162 vec![
4163 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4164 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4165 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4166 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4167 ]
4168 );
4169 });
4170
4171 view.update(cx, |view, cx| {
4172 view.move_line_up(&MoveLineUp, cx);
4173 assert_eq!(
4174 view.display_text(cx),
4175 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4176 );
4177 assert_eq!(
4178 view.selection_ranges(cx),
4179 vec![
4180 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4181 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4182 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4183 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4184 ]
4185 );
4186 });
4187 }
4188
4189 #[gpui::test]
4190 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4191 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4192 let settings = EditorSettings::test(&cx);
4193 let view = cx
4194 .add_window(Default::default(), |cx| {
4195 build_editor(buffer.clone(), settings, cx)
4196 })
4197 .1;
4198
4199 // Cut with three selections. Clipboard text is divided into three slices.
4200 view.update(cx, |view, cx| {
4201 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4202 view.cut(&Cut, cx);
4203 assert_eq!(view.display_text(cx), "two four six ");
4204 });
4205
4206 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4207 view.update(cx, |view, cx| {
4208 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4209 view.paste(&Paste, cx);
4210 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4211 assert_eq!(
4212 view.selection_ranges(cx),
4213 &[
4214 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4215 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4216 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4217 ]
4218 );
4219 });
4220
4221 // Paste again but with only two cursors. Since the number of cursors doesn't
4222 // match the number of slices in the clipboard, the entire clipboard text
4223 // is pasted at each cursor.
4224 view.update(cx, |view, cx| {
4225 view.select_ranges(vec![0..0, 31..31], false, cx);
4226 view.handle_input(&Input("( ".into()), cx);
4227 view.paste(&Paste, cx);
4228 view.handle_input(&Input(") ".into()), cx);
4229 assert_eq!(
4230 view.display_text(cx),
4231 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4232 );
4233 });
4234
4235 view.update(cx, |view, cx| {
4236 view.select_ranges(vec![0..0], false, cx);
4237 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4238 assert_eq!(
4239 view.display_text(cx),
4240 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4241 );
4242 });
4243
4244 // Cut with three selections, one of which is full-line.
4245 view.update(cx, |view, cx| {
4246 view.select_display_ranges(
4247 &[
4248 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4249 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4250 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4251 ],
4252 cx,
4253 )
4254 .unwrap();
4255 view.cut(&Cut, cx);
4256 assert_eq!(
4257 view.display_text(cx),
4258 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4259 );
4260 });
4261
4262 // Paste with three selections, noticing how the copied selection that was full-line
4263 // gets inserted before the second cursor.
4264 view.update(cx, |view, cx| {
4265 view.select_display_ranges(
4266 &[
4267 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4268 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4269 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4270 ],
4271 cx,
4272 )
4273 .unwrap();
4274 view.paste(&Paste, cx);
4275 assert_eq!(
4276 view.display_text(cx),
4277 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4278 );
4279 assert_eq!(
4280 view.selection_ranges(cx),
4281 &[
4282 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4283 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4284 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4285 ]
4286 );
4287 });
4288
4289 // Copy with a single cursor only, which writes the whole line into the clipboard.
4290 view.update(cx, |view, cx| {
4291 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4292 .unwrap();
4293 view.copy(&Copy, cx);
4294 });
4295
4296 // Paste with three selections, noticing how the copied full-line selection is inserted
4297 // before the empty selections but replaces the selection that is non-empty.
4298 view.update(cx, |view, cx| {
4299 view.select_display_ranges(
4300 &[
4301 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4302 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4303 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4304 ],
4305 cx,
4306 )
4307 .unwrap();
4308 view.paste(&Paste, cx);
4309 assert_eq!(
4310 view.display_text(cx),
4311 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4312 );
4313 assert_eq!(
4314 view.selection_ranges(cx),
4315 &[
4316 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4317 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4318 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4319 ]
4320 );
4321 });
4322 }
4323
4324 #[gpui::test]
4325 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4326 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4327 let settings = EditorSettings::test(&cx);
4328 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4329 view.update(cx, |view, cx| {
4330 view.select_all(&SelectAll, cx);
4331 assert_eq!(
4332 view.selection_ranges(cx),
4333 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4334 );
4335 });
4336 }
4337
4338 #[gpui::test]
4339 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4340 let settings = EditorSettings::test(&cx);
4341 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4342 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4343 view.update(cx, |view, cx| {
4344 view.select_display_ranges(
4345 &[
4346 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4347 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4348 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4349 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4350 ],
4351 cx,
4352 )
4353 .unwrap();
4354 view.select_line(&SelectLine, cx);
4355 assert_eq!(
4356 view.selection_ranges(cx),
4357 vec![
4358 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4359 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4360 ]
4361 );
4362 });
4363
4364 view.update(cx, |view, cx| {
4365 view.select_line(&SelectLine, cx);
4366 assert_eq!(
4367 view.selection_ranges(cx),
4368 vec![
4369 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4370 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4371 ]
4372 );
4373 });
4374
4375 view.update(cx, |view, cx| {
4376 view.select_line(&SelectLine, cx);
4377 assert_eq!(
4378 view.selection_ranges(cx),
4379 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4380 );
4381 });
4382 }
4383
4384 #[gpui::test]
4385 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4386 let settings = EditorSettings::test(&cx);
4387 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4388 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4389 view.update(cx, |view, cx| {
4390 view.fold_ranges(
4391 vec![
4392 Point::new(0, 2)..Point::new(1, 2),
4393 Point::new(2, 3)..Point::new(4, 1),
4394 Point::new(7, 0)..Point::new(8, 4),
4395 ],
4396 cx,
4397 );
4398 view.select_display_ranges(
4399 &[
4400 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4401 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4402 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4403 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4404 ],
4405 cx,
4406 )
4407 .unwrap();
4408 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4409 });
4410
4411 view.update(cx, |view, cx| {
4412 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4413 assert_eq!(
4414 view.display_text(cx),
4415 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4416 );
4417 assert_eq!(
4418 view.selection_ranges(cx),
4419 [
4420 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4421 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4422 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4423 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4424 ]
4425 );
4426 });
4427
4428 view.update(cx, |view, cx| {
4429 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4430 .unwrap();
4431 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4432 assert_eq!(
4433 view.display_text(cx),
4434 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4435 );
4436 assert_eq!(
4437 view.selection_ranges(cx),
4438 [
4439 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4440 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4441 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4442 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4443 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4444 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4445 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4446 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4447 ]
4448 );
4449 });
4450 }
4451
4452 #[gpui::test]
4453 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4454 let settings = EditorSettings::test(&cx);
4455 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4456 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4457
4458 view.update(cx, |view, cx| {
4459 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4460 .unwrap();
4461 });
4462 view.update(cx, |view, cx| {
4463 view.add_selection_above(&AddSelectionAbove, cx);
4464 assert_eq!(
4465 view.selection_ranges(cx),
4466 vec![
4467 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4468 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4469 ]
4470 );
4471 });
4472
4473 view.update(cx, |view, cx| {
4474 view.add_selection_above(&AddSelectionAbove, cx);
4475 assert_eq!(
4476 view.selection_ranges(cx),
4477 vec![
4478 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4479 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4480 ]
4481 );
4482 });
4483
4484 view.update(cx, |view, cx| {
4485 view.add_selection_below(&AddSelectionBelow, cx);
4486 assert_eq!(
4487 view.selection_ranges(cx),
4488 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4489 );
4490 });
4491
4492 view.update(cx, |view, cx| {
4493 view.add_selection_below(&AddSelectionBelow, cx);
4494 assert_eq!(
4495 view.selection_ranges(cx),
4496 vec![
4497 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4498 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4499 ]
4500 );
4501 });
4502
4503 view.update(cx, |view, cx| {
4504 view.add_selection_below(&AddSelectionBelow, cx);
4505 assert_eq!(
4506 view.selection_ranges(cx),
4507 vec![
4508 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4509 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4510 ]
4511 );
4512 });
4513
4514 view.update(cx, |view, cx| {
4515 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4516 .unwrap();
4517 });
4518 view.update(cx, |view, cx| {
4519 view.add_selection_below(&AddSelectionBelow, cx);
4520 assert_eq!(
4521 view.selection_ranges(cx),
4522 vec![
4523 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4524 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4525 ]
4526 );
4527 });
4528
4529 view.update(cx, |view, cx| {
4530 view.add_selection_below(&AddSelectionBelow, cx);
4531 assert_eq!(
4532 view.selection_ranges(cx),
4533 vec![
4534 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4535 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4536 ]
4537 );
4538 });
4539
4540 view.update(cx, |view, cx| {
4541 view.add_selection_above(&AddSelectionAbove, cx);
4542 assert_eq!(
4543 view.selection_ranges(cx),
4544 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4545 );
4546 });
4547
4548 view.update(cx, |view, cx| {
4549 view.add_selection_above(&AddSelectionAbove, cx);
4550 assert_eq!(
4551 view.selection_ranges(cx),
4552 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4553 );
4554 });
4555
4556 view.update(cx, |view, cx| {
4557 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4558 .unwrap();
4559 view.add_selection_below(&AddSelectionBelow, cx);
4560 assert_eq!(
4561 view.selection_ranges(cx),
4562 vec![
4563 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4564 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4565 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4566 ]
4567 );
4568 });
4569
4570 view.update(cx, |view, cx| {
4571 view.add_selection_below(&AddSelectionBelow, cx);
4572 assert_eq!(
4573 view.selection_ranges(cx),
4574 vec![
4575 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4576 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4577 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4578 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4579 ]
4580 );
4581 });
4582
4583 view.update(cx, |view, cx| {
4584 view.add_selection_above(&AddSelectionAbove, cx);
4585 assert_eq!(
4586 view.selection_ranges(cx),
4587 vec![
4588 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4589 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4590 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4591 ]
4592 );
4593 });
4594
4595 view.update(cx, |view, cx| {
4596 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4597 .unwrap();
4598 });
4599 view.update(cx, |view, cx| {
4600 view.add_selection_above(&AddSelectionAbove, cx);
4601 assert_eq!(
4602 view.selection_ranges(cx),
4603 vec![
4604 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4605 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4606 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4607 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4608 ]
4609 );
4610 });
4611
4612 view.update(cx, |view, cx| {
4613 view.add_selection_below(&AddSelectionBelow, cx);
4614 assert_eq!(
4615 view.selection_ranges(cx),
4616 vec![
4617 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4618 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4619 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4620 ]
4621 );
4622 });
4623 }
4624
4625 #[gpui::test]
4626 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4627 let settings = cx.read(EditorSettings::test);
4628 let language = Some(Arc::new(Language::new(
4629 LanguageConfig::default(),
4630 tree_sitter_rust::language(),
4631 )));
4632
4633 let text = r#"
4634 use mod1::mod2::{mod3, mod4};
4635
4636 fn fn_1(param1: bool, param2: &str) {
4637 let var1 = "text";
4638 }
4639 "#
4640 .unindent();
4641
4642 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4643 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4644 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4645 .await;
4646
4647 view.update(&mut cx, |view, cx| {
4648 view.select_display_ranges(
4649 &[
4650 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4651 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4652 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4653 ],
4654 cx,
4655 )
4656 .unwrap();
4657 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4658 });
4659 assert_eq!(
4660 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4661 &[
4662 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4663 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4664 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4665 ]
4666 );
4667
4668 view.update(&mut cx, |view, cx| {
4669 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4670 });
4671 assert_eq!(
4672 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4673 &[
4674 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4675 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4676 ]
4677 );
4678
4679 view.update(&mut cx, |view, cx| {
4680 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4681 });
4682 assert_eq!(
4683 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4684 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4685 );
4686
4687 // Trying to expand the selected syntax node one more time has no effect.
4688 view.update(&mut cx, |view, cx| {
4689 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4690 });
4691 assert_eq!(
4692 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4693 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4694 );
4695
4696 view.update(&mut cx, |view, cx| {
4697 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4698 });
4699 assert_eq!(
4700 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4701 &[
4702 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4703 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4704 ]
4705 );
4706
4707 view.update(&mut cx, |view, cx| {
4708 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4709 });
4710 assert_eq!(
4711 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4712 &[
4713 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4714 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4715 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4716 ]
4717 );
4718
4719 view.update(&mut cx, |view, cx| {
4720 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4721 });
4722 assert_eq!(
4723 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4724 &[
4725 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4726 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4727 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4728 ]
4729 );
4730
4731 // Trying to shrink the selected syntax node one more time has no effect.
4732 view.update(&mut cx, |view, cx| {
4733 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4734 });
4735 assert_eq!(
4736 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4737 &[
4738 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4739 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4740 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4741 ]
4742 );
4743
4744 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4745 // a fold.
4746 view.update(&mut cx, |view, cx| {
4747 view.fold_ranges(
4748 vec![
4749 Point::new(0, 21)..Point::new(0, 24),
4750 Point::new(3, 20)..Point::new(3, 22),
4751 ],
4752 cx,
4753 );
4754 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4755 });
4756 assert_eq!(
4757 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4758 &[
4759 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4760 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4761 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4762 ]
4763 );
4764 }
4765
4766 #[gpui::test]
4767 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4768 let settings = cx.read(EditorSettings::test);
4769 let language = Some(Arc::new(Language::new(
4770 LanguageConfig {
4771 brackets: vec![
4772 BracketPair {
4773 start: "{".to_string(),
4774 end: "}".to_string(),
4775 close: true,
4776 newline: true,
4777 },
4778 BracketPair {
4779 start: "/*".to_string(),
4780 end: " */".to_string(),
4781 close: true,
4782 newline: true,
4783 },
4784 ],
4785 ..Default::default()
4786 },
4787 tree_sitter_rust::language(),
4788 )));
4789
4790 let text = r#"
4791 a
4792
4793 /
4794
4795 "#
4796 .unindent();
4797
4798 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4799 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4800 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4801 .await;
4802
4803 view.update(&mut cx, |view, cx| {
4804 view.select_display_ranges(
4805 &[
4806 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4807 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4808 ],
4809 cx,
4810 )
4811 .unwrap();
4812 view.handle_input(&Input("{".to_string()), cx);
4813 view.handle_input(&Input("{".to_string()), cx);
4814 view.handle_input(&Input("{".to_string()), cx);
4815 assert_eq!(
4816 view.text(cx),
4817 "
4818 {{{}}}
4819 {{{}}}
4820 /
4821
4822 "
4823 .unindent()
4824 );
4825
4826 view.move_right(&MoveRight, cx);
4827 view.handle_input(&Input("}".to_string()), cx);
4828 view.handle_input(&Input("}".to_string()), cx);
4829 view.handle_input(&Input("}".to_string()), cx);
4830 assert_eq!(
4831 view.text(cx),
4832 "
4833 {{{}}}}
4834 {{{}}}}
4835 /
4836
4837 "
4838 .unindent()
4839 );
4840
4841 view.undo(&Undo, cx);
4842 view.handle_input(&Input("/".to_string()), cx);
4843 view.handle_input(&Input("*".to_string()), cx);
4844 assert_eq!(
4845 view.text(cx),
4846 "
4847 /* */
4848 /* */
4849 /
4850
4851 "
4852 .unindent()
4853 );
4854
4855 view.undo(&Undo, cx);
4856 view.select_display_ranges(
4857 &[
4858 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4859 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4860 ],
4861 cx,
4862 )
4863 .unwrap();
4864 view.handle_input(&Input("*".to_string()), cx);
4865 assert_eq!(
4866 view.text(cx),
4867 "
4868 a
4869
4870 /*
4871 *
4872 "
4873 .unindent()
4874 );
4875 });
4876 }
4877
4878 #[gpui::test]
4879 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
4880 let settings = cx.read(EditorSettings::test);
4881 let language = Some(Arc::new(Language::new(
4882 LanguageConfig {
4883 brackets: vec![
4884 BracketPair {
4885 start: "{".to_string(),
4886 end: "}".to_string(),
4887 close: true,
4888 newline: true,
4889 },
4890 BracketPair {
4891 start: "/* ".to_string(),
4892 end: " */".to_string(),
4893 close: true,
4894 newline: true,
4895 },
4896 ],
4897 ..Default::default()
4898 },
4899 tree_sitter_rust::language(),
4900 )));
4901
4902 let text = concat!(
4903 "{ }\n", // Suppress rustfmt
4904 " x\n", //
4905 " /* */\n", //
4906 "x\n", //
4907 "{{} }\n", //
4908 );
4909
4910 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4911 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4912 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4913 .await;
4914
4915 view.update(&mut cx, |view, cx| {
4916 view.select_display_ranges(
4917 &[
4918 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4919 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4920 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4921 ],
4922 cx,
4923 )
4924 .unwrap();
4925 view.newline(&Newline, cx);
4926
4927 assert_eq!(
4928 view.buffer().read(cx).text(),
4929 concat!(
4930 "{ \n", // Suppress rustfmt
4931 "\n", //
4932 "}\n", //
4933 " x\n", //
4934 " /* \n", //
4935 " \n", //
4936 " */\n", //
4937 "x\n", //
4938 "{{} \n", //
4939 "}\n", //
4940 )
4941 );
4942 });
4943 }
4944
4945 impl Editor {
4946 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
4947 self.selections_in_range(
4948 self.selection_set_id,
4949 DisplayPoint::zero()..self.max_point(cx),
4950 cx,
4951 )
4952 .collect::<Vec<_>>()
4953 }
4954 }
4955
4956 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
4957 let point = DisplayPoint::new(row as u32, column as u32);
4958 point..point
4959 }
4960
4961 fn build_editor(
4962 buffer: ModelHandle<Buffer>,
4963 settings: EditorSettings,
4964 cx: &mut ViewContext<Editor>,
4965 ) -> Editor {
4966 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
4967 }
4968}
4969
4970trait RangeExt<T> {
4971 fn sorted(&self) -> Range<T>;
4972 fn to_inclusive(&self) -> RangeInclusive<T>;
4973}
4974
4975impl<T: Ord + Clone> RangeExt<T> for Range<T> {
4976 fn sorted(&self) -> Self {
4977 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
4978 }
4979
4980 fn to_inclusive(&self) -> RangeInclusive<T> {
4981 self.start.clone()..=self.end.clone()
4982 }
4983}