1pub mod display_map;
2mod element;
3pub mod movement;
4
5#[cfg(test)]
6mod test;
7
8use buffer::rope::TextDimension;
9use clock::ReplicaId;
10use display_map::*;
11pub use display_map::{DisplayPoint, DisplayRow};
12pub use element::*;
13use gpui::{
14 action,
15 geometry::vector::{vec2f, Vector2F},
16 keymap::Binding,
17 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
18 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
19};
20use language::*;
21use serde::{Deserialize, Serialize};
22use smallvec::SmallVec;
23use smol::Timer;
24use std::{
25 cell::RefCell,
26 cmp::{self, Ordering},
27 collections::HashMap,
28 iter, mem,
29 ops::{Range, RangeInclusive},
30 rc::Rc,
31 sync::Arc,
32 time::Duration,
33};
34use sum_tree::Bias;
35use theme::{DiagnosticStyle, EditorStyle, SyntaxTheme};
36use util::post_inc;
37
38const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
39const MAX_LINE_LEN: usize = 1024;
40
41action!(Cancel);
42action!(Backspace);
43action!(Delete);
44action!(Input, String);
45action!(Newline);
46action!(Tab);
47action!(DeleteLine);
48action!(DeleteToPreviousWordBoundary);
49action!(DeleteToNextWordBoundary);
50action!(DeleteToBeginningOfLine);
51action!(DeleteToEndOfLine);
52action!(CutToEndOfLine);
53action!(DuplicateLine);
54action!(MoveLineUp);
55action!(MoveLineDown);
56action!(Cut);
57action!(Copy);
58action!(Paste);
59action!(Undo);
60action!(Redo);
61action!(MoveUp);
62action!(MoveDown);
63action!(MoveLeft);
64action!(MoveRight);
65action!(MoveToPreviousWordBoundary);
66action!(MoveToNextWordBoundary);
67action!(MoveToBeginningOfLine);
68action!(MoveToEndOfLine);
69action!(MoveToBeginning);
70action!(MoveToEnd);
71action!(SelectUp);
72action!(SelectDown);
73action!(SelectLeft);
74action!(SelectRight);
75action!(SelectToPreviousWordBoundary);
76action!(SelectToNextWordBoundary);
77action!(SelectToBeginningOfLine, bool);
78action!(SelectToEndOfLine);
79action!(SelectToBeginning);
80action!(SelectToEnd);
81action!(SelectAll);
82action!(SelectLine);
83action!(SplitSelectionIntoLines);
84action!(AddSelectionAbove);
85action!(AddSelectionBelow);
86action!(SelectLargerSyntaxNode);
87action!(SelectSmallerSyntaxNode);
88action!(MoveToEnclosingBracket);
89action!(ShowNextDiagnostic);
90action!(PageUp);
91action!(PageDown);
92action!(Fold);
93action!(Unfold);
94action!(FoldSelectedRanges);
95action!(Scroll, Vector2F);
96action!(Select, SelectPhase);
97
98pub fn init(cx: &mut MutableAppContext) {
99 cx.add_bindings(vec![
100 Binding::new("escape", Cancel, Some("Editor")),
101 Binding::new("backspace", Backspace, Some("Editor")),
102 Binding::new("ctrl-h", Backspace, Some("Editor")),
103 Binding::new("delete", Delete, Some("Editor")),
104 Binding::new("ctrl-d", Delete, Some("Editor")),
105 Binding::new("enter", Newline, Some("Editor && mode == full")),
106 Binding::new(
107 "alt-enter",
108 Input("\n".into()),
109 Some("Editor && mode == auto_height"),
110 ),
111 Binding::new("tab", Tab, Some("Editor")),
112 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
113 Binding::new(
114 "alt-backspace",
115 DeleteToPreviousWordBoundary,
116 Some("Editor"),
117 ),
118 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
119 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
120 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
121 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
122 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
123 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
124 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
125 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
126 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
127 Binding::new("cmd-x", Cut, Some("Editor")),
128 Binding::new("cmd-c", Copy, Some("Editor")),
129 Binding::new("cmd-v", Paste, Some("Editor")),
130 Binding::new("cmd-z", Undo, Some("Editor")),
131 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
132 Binding::new("up", MoveUp, Some("Editor")),
133 Binding::new("down", MoveDown, Some("Editor")),
134 Binding::new("left", MoveLeft, Some("Editor")),
135 Binding::new("right", MoveRight, Some("Editor")),
136 Binding::new("ctrl-p", MoveUp, Some("Editor")),
137 Binding::new("ctrl-n", MoveDown, Some("Editor")),
138 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
139 Binding::new("ctrl-f", MoveRight, Some("Editor")),
140 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
141 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
142 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
143 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
144 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
145 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
146 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
147 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
148 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
149 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
150 Binding::new("shift-up", SelectUp, Some("Editor")),
151 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
152 Binding::new("shift-down", SelectDown, Some("Editor")),
153 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
154 Binding::new("shift-left", SelectLeft, Some("Editor")),
155 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
156 Binding::new("shift-right", SelectRight, Some("Editor")),
157 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
158 Binding::new(
159 "alt-shift-left",
160 SelectToPreviousWordBoundary,
161 Some("Editor"),
162 ),
163 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
164 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
165 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
166 Binding::new(
167 "cmd-shift-left",
168 SelectToBeginningOfLine(true),
169 Some("Editor"),
170 ),
171 Binding::new(
172 "ctrl-shift-A",
173 SelectToBeginningOfLine(true),
174 Some("Editor"),
175 ),
176 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
177 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
178 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
179 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
180 Binding::new("cmd-a", SelectAll, Some("Editor")),
181 Binding::new("cmd-l", SelectLine, Some("Editor")),
182 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
183 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
184 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
185 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
186 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
187 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
188 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
189 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
190 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
191 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
192 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
193 Binding::new("pageup", PageUp, Some("Editor")),
194 Binding::new("pagedown", PageDown, Some("Editor")),
195 Binding::new("alt-cmd-[", Fold, Some("Editor")),
196 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
197 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
198 ]);
199
200 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
201 cx.add_action(Editor::select);
202 cx.add_action(Editor::cancel);
203 cx.add_action(Editor::handle_input);
204 cx.add_action(Editor::newline);
205 cx.add_action(Editor::backspace);
206 cx.add_action(Editor::delete);
207 cx.add_action(Editor::tab);
208 cx.add_action(Editor::delete_line);
209 cx.add_action(Editor::delete_to_previous_word_boundary);
210 cx.add_action(Editor::delete_to_next_word_boundary);
211 cx.add_action(Editor::delete_to_beginning_of_line);
212 cx.add_action(Editor::delete_to_end_of_line);
213 cx.add_action(Editor::cut_to_end_of_line);
214 cx.add_action(Editor::duplicate_line);
215 cx.add_action(Editor::move_line_up);
216 cx.add_action(Editor::move_line_down);
217 cx.add_action(Editor::cut);
218 cx.add_action(Editor::copy);
219 cx.add_action(Editor::paste);
220 cx.add_action(Editor::undo);
221 cx.add_action(Editor::redo);
222 cx.add_action(Editor::move_up);
223 cx.add_action(Editor::move_down);
224 cx.add_action(Editor::move_left);
225 cx.add_action(Editor::move_right);
226 cx.add_action(Editor::move_to_previous_word_boundary);
227 cx.add_action(Editor::move_to_next_word_boundary);
228 cx.add_action(Editor::move_to_beginning_of_line);
229 cx.add_action(Editor::move_to_end_of_line);
230 cx.add_action(Editor::move_to_beginning);
231 cx.add_action(Editor::move_to_end);
232 cx.add_action(Editor::select_up);
233 cx.add_action(Editor::select_down);
234 cx.add_action(Editor::select_left);
235 cx.add_action(Editor::select_right);
236 cx.add_action(Editor::select_to_previous_word_boundary);
237 cx.add_action(Editor::select_to_next_word_boundary);
238 cx.add_action(Editor::select_to_beginning_of_line);
239 cx.add_action(Editor::select_to_end_of_line);
240 cx.add_action(Editor::select_to_beginning);
241 cx.add_action(Editor::select_to_end);
242 cx.add_action(Editor::select_all);
243 cx.add_action(Editor::select_line);
244 cx.add_action(Editor::split_selection_into_lines);
245 cx.add_action(Editor::add_selection_above);
246 cx.add_action(Editor::add_selection_below);
247 cx.add_action(Editor::select_larger_syntax_node);
248 cx.add_action(Editor::select_smaller_syntax_node);
249 cx.add_action(Editor::move_to_enclosing_bracket);
250 cx.add_action(Editor::show_next_diagnostic);
251 cx.add_action(Editor::page_up);
252 cx.add_action(Editor::page_down);
253 cx.add_action(Editor::fold);
254 cx.add_action(Editor::unfold);
255 cx.add_action(Editor::fold_selected_ranges);
256}
257
258trait SelectionExt {
259 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint>;
260 fn spanned_rows(
261 &self,
262 include_end_if_at_line_start: bool,
263 map: &DisplayMapSnapshot,
264 ) -> SpannedRows;
265}
266
267struct SpannedRows {
268 buffer_rows: Range<u32>,
269 display_rows: Range<u32>,
270}
271
272#[derive(Clone, Debug)]
273pub enum SelectPhase {
274 Begin {
275 position: DisplayPoint,
276 add: bool,
277 click_count: usize,
278 },
279 Update {
280 position: DisplayPoint,
281 scroll_position: Vector2F,
282 },
283 End,
284}
285
286#[derive(Clone, Debug)]
287enum SelectMode {
288 Character,
289 Word(Range<Anchor>),
290 Line(Range<Anchor>),
291 All,
292}
293
294#[derive(Copy, Clone, PartialEq, Eq)]
295pub enum EditorMode {
296 SingleLine,
297 AutoHeight { max_lines: usize },
298 Full,
299}
300
301#[derive(Clone)]
302pub struct EditorSettings {
303 pub tab_size: usize,
304 pub style: EditorStyle,
305}
306
307pub struct Editor {
308 handle: WeakViewHandle<Self>,
309 buffer: ModelHandle<Buffer>,
310 display_map: ModelHandle<DisplayMap>,
311 selection_set_id: SelectionSetId,
312 pending_selection: Option<PendingSelection>,
313 next_selection_id: usize,
314 add_selections_state: Option<AddSelectionsState>,
315 autoclose_stack: Vec<BracketPairState>,
316 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
317 active_diagnostics: Option<ActiveDiagnosticGroup>,
318 scroll_position: Vector2F,
319 scroll_top_anchor: Anchor,
320 autoscroll_requested: bool,
321 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
322 focused: bool,
323 show_local_cursors: bool,
324 blink_epoch: usize,
325 blinking_paused: bool,
326 mode: EditorMode,
327 placeholder_text: Option<Arc<str>>,
328}
329
330pub struct Snapshot {
331 pub mode: EditorMode,
332 pub display_snapshot: DisplayMapSnapshot,
333 pub placeholder_text: Option<Arc<str>>,
334 is_focused: bool,
335 scroll_position: Vector2F,
336 scroll_top_anchor: Anchor,
337}
338
339struct PendingSelection {
340 selection: Selection<Anchor>,
341 mode: SelectMode,
342}
343
344struct AddSelectionsState {
345 above: bool,
346 stack: Vec<usize>,
347}
348
349#[derive(Debug)]
350struct BracketPairState {
351 ranges: AnchorRangeSet,
352 pair: BracketPair,
353}
354
355#[derive(Debug)]
356struct ActiveDiagnosticGroup {
357 primary_range: Range<Anchor>,
358 primary_message: String,
359 blocks: HashMap<BlockId, Diagnostic>,
360 is_valid: bool,
361}
362
363#[derive(Serialize, Deserialize)]
364struct ClipboardSelection {
365 len: usize,
366 is_entire_line: bool,
367}
368
369impl Editor {
370 pub fn single_line(
371 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
372 cx: &mut ViewContext<Self>,
373 ) -> Self {
374 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
375 let mut view = Self::for_buffer(buffer, build_settings, cx);
376 view.mode = EditorMode::SingleLine;
377 view
378 }
379
380 pub fn auto_height(
381 max_lines: usize,
382 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
383 cx: &mut ViewContext<Self>,
384 ) -> Self {
385 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
386 let mut view = Self::for_buffer(buffer, build_settings, cx);
387 view.mode = EditorMode::AutoHeight { max_lines };
388 view
389 }
390
391 pub fn for_buffer(
392 buffer: ModelHandle<Buffer>,
393 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
394 cx: &mut ViewContext<Self>,
395 ) -> Self {
396 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
397 }
398
399 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
400 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
401 clone.scroll_position = self.scroll_position;
402 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
403 clone
404 }
405
406 pub fn new(
407 buffer: ModelHandle<Buffer>,
408 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
409 cx: &mut ViewContext<Self>,
410 ) -> Self {
411 let settings = build_settings.borrow_mut()(cx);
412 let display_map = cx.add_model(|cx| {
413 DisplayMap::new(
414 buffer.clone(),
415 settings.tab_size,
416 settings.style.text.font_id,
417 settings.style.text.font_size,
418 None,
419 cx,
420 )
421 });
422 cx.observe(&buffer, Self::on_buffer_changed).detach();
423 cx.subscribe(&buffer, Self::on_buffer_event).detach();
424 cx.observe(&display_map, Self::on_display_map_changed)
425 .detach();
426
427 let mut next_selection_id = 0;
428 let selection_set_id = buffer.update(cx, |buffer, cx| {
429 buffer.add_selection_set(
430 &[Selection {
431 id: post_inc(&mut next_selection_id),
432 start: 0,
433 end: 0,
434 reversed: false,
435 goal: SelectionGoal::None,
436 }],
437 cx,
438 )
439 });
440 Self {
441 handle: cx.handle().downgrade(),
442 buffer,
443 display_map,
444 selection_set_id,
445 pending_selection: None,
446 next_selection_id,
447 add_selections_state: None,
448 autoclose_stack: Default::default(),
449 select_larger_syntax_node_stack: Vec::new(),
450 active_diagnostics: None,
451 build_settings,
452 scroll_position: Vector2F::zero(),
453 scroll_top_anchor: Anchor::min(),
454 autoscroll_requested: false,
455 focused: false,
456 show_local_cursors: false,
457 blink_epoch: 0,
458 blinking_paused: false,
459 mode: EditorMode::Full,
460 placeholder_text: None,
461 }
462 }
463
464 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
465 self.buffer.read(cx).replica_id()
466 }
467
468 pub fn buffer(&self) -> &ModelHandle<Buffer> {
469 &self.buffer
470 }
471
472 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> Snapshot {
473 Snapshot {
474 mode: self.mode,
475 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
476 scroll_position: self.scroll_position,
477 scroll_top_anchor: self.scroll_top_anchor.clone(),
478 placeholder_text: self.placeholder_text.clone(),
479 is_focused: self
480 .handle
481 .upgrade(cx)
482 .map_or(false, |handle| handle.is_focused(cx)),
483 }
484 }
485
486 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
487 self.buffer.read(cx).language()
488 }
489
490 pub fn set_placeholder_text(
491 &mut self,
492 placeholder_text: impl Into<Arc<str>>,
493 cx: &mut ViewContext<Self>,
494 ) {
495 self.placeholder_text = Some(placeholder_text.into());
496 cx.notify();
497 }
498
499 fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
500 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
501 let scroll_top_buffer_offset =
502 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
503 self.scroll_top_anchor = self
504 .buffer
505 .read(cx)
506 .anchor_at(scroll_top_buffer_offset, Bias::Right);
507 self.scroll_position = vec2f(
508 scroll_position.x(),
509 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
510 );
511
512 debug_assert_eq!(
513 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
514 scroll_position
515 );
516
517 cx.notify();
518 }
519
520 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
521 if max < self.scroll_position.x() {
522 self.scroll_position.set_x(max);
523 true
524 } else {
525 false
526 }
527 }
528
529 pub fn autoscroll_vertically(
530 &mut self,
531 viewport_height: f32,
532 line_height: f32,
533 cx: &mut ViewContext<Self>,
534 ) -> bool {
535 let visible_lines = viewport_height / line_height;
536 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
537 let mut scroll_position =
538 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
539 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
540 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
541 } else {
542 display_map.max_point().row().saturating_sub(1) as f32
543 };
544 if scroll_position.y() > max_scroll_top {
545 scroll_position.set_y(max_scroll_top);
546 self.set_scroll_position(scroll_position, cx);
547 }
548
549 if self.autoscroll_requested {
550 self.autoscroll_requested = false;
551 } else {
552 return false;
553 }
554
555 let mut selections = self.selections::<Point>(cx).peekable();
556 let first_cursor_top = selections
557 .peek()
558 .unwrap()
559 .head()
560 .to_display_point(&display_map)
561 .row() as f32;
562 let last_cursor_bottom = selections
563 .last()
564 .unwrap()
565 .head()
566 .to_display_point(&display_map)
567 .row() as f32
568 + 1.0;
569
570 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
571 0.
572 } else {
573 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0)
574 .floor()
575 .min(3.0)
576 };
577 if margin < 0.0 {
578 return false;
579 }
580
581 let target_top = (first_cursor_top - margin).max(0.0);
582 let target_bottom = last_cursor_bottom + margin;
583 let start_row = scroll_position.y();
584 let end_row = start_row + visible_lines;
585
586 if target_top < start_row {
587 scroll_position.set_y(target_top);
588 self.set_scroll_position(scroll_position, cx);
589 } else if target_bottom >= end_row {
590 scroll_position.set_y(target_bottom - visible_lines);
591 self.set_scroll_position(scroll_position, cx);
592 }
593
594 true
595 }
596
597 pub fn autoscroll_horizontally(
598 &mut self,
599 start_row: u32,
600 viewport_width: f32,
601 scroll_width: f32,
602 max_glyph_width: f32,
603 layouts: &[text_layout::Line],
604 cx: &mut ViewContext<Self>,
605 ) -> bool {
606 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
607 let selections = self.selections::<Point>(cx);
608 let mut target_left = std::f32::INFINITY;
609 let mut target_right = 0.0_f32;
610 for selection in selections {
611 let head = selection.head().to_display_point(&display_map);
612 let start_column = head.column().saturating_sub(3);
613 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
614 target_left = target_left
615 .min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
616 target_right = target_right.max(
617 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
618 + max_glyph_width,
619 );
620 }
621 target_right = target_right.min(scroll_width);
622
623 if target_right - target_left > viewport_width {
624 return false;
625 }
626
627 let scroll_left = self.scroll_position.x() * max_glyph_width;
628 let scroll_right = scroll_left + viewport_width;
629
630 if target_left < scroll_left {
631 self.scroll_position.set_x(target_left / max_glyph_width);
632 true
633 } else if target_right > scroll_right {
634 self.scroll_position
635 .set_x((target_right - viewport_width) / max_glyph_width);
636 true
637 } else {
638 false
639 }
640 }
641
642 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
643 match phase {
644 SelectPhase::Begin {
645 position,
646 add,
647 click_count,
648 } => self.begin_selection(*position, *add, *click_count, cx),
649 SelectPhase::Update {
650 position,
651 scroll_position,
652 } => self.update_selection(*position, *scroll_position, cx),
653 SelectPhase::End => self.end_selection(cx),
654 }
655 }
656
657 fn begin_selection(
658 &mut self,
659 position: DisplayPoint,
660 add: bool,
661 click_count: usize,
662 cx: &mut ViewContext<Self>,
663 ) {
664 if !self.focused {
665 cx.focus_self();
666 cx.emit(Event::Activate);
667 }
668
669 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
670 let buffer = self.buffer.read(cx);
671 let start;
672 let end;
673 let mode;
674 match click_count {
675 1 => {
676 start = buffer.anchor_before(position.to_point(&display_map));
677 end = start.clone();
678 mode = SelectMode::Character;
679 }
680 2 => {
681 let range = movement::surrounding_word(&display_map, position);
682 start = buffer.anchor_before(range.start.to_point(&display_map));
683 end = buffer.anchor_before(range.end.to_point(&display_map));
684 mode = SelectMode::Word(start.clone()..end.clone());
685 }
686 3 => todo!(),
687 _ => {
688 start = buffer.anchor_before(0);
689 end = buffer.anchor_before(buffer.len());
690 mode = SelectMode::All;
691 }
692 }
693 let selection = Selection {
694 id: post_inc(&mut self.next_selection_id),
695 start,
696 end,
697 reversed: false,
698 goal: SelectionGoal::None,
699 };
700
701 if !add {
702 self.update_selections::<usize>(Vec::new(), false, cx);
703 }
704 self.pending_selection = Some(PendingSelection { selection, mode });
705
706 cx.notify();
707 }
708
709 fn update_selection(
710 &mut self,
711 position: DisplayPoint,
712 scroll_position: Vector2F,
713 cx: &mut ViewContext<Self>,
714 ) {
715 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
716 if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
717 let buffer = self.buffer.read(cx);
718 let head;
719 let tail;
720 match mode {
721 SelectMode::Character => {
722 head = position.to_point(&display_map);
723 tail = selection.tail().to_point(buffer);
724 }
725 SelectMode::Word(original_range) => {
726 let original_display_range = original_range.start.to_display_point(&display_map)
727 ..original_range.end.to_display_point(&display_map);
728 let original_buffer_range = original_display_range.start.to_point(&display_map)
729 ..original_display_range.end.to_point(&display_map);
730 if movement::is_inside_word(&display_map, position)
731 || original_display_range.contains(&position)
732 {
733 let word_range = movement::surrounding_word(&display_map, position);
734 if word_range.start < original_display_range.start {
735 head = word_range.start.to_point(&display_map);
736 } else {
737 head = word_range.end.to_point(&display_map);
738 }
739 } else {
740 head = position.to_point(&display_map);
741 }
742
743 if head <= original_buffer_range.start {
744 tail = original_buffer_range.end;
745 } else {
746 tail = original_buffer_range.start;
747 }
748 }
749 SelectMode::Line(_) => todo!(),
750 SelectMode::All => {
751 return;
752 }
753 };
754
755 if head < tail {
756 selection.start = buffer.anchor_before(head);
757 selection.end = buffer.anchor_before(tail);
758 selection.reversed = true;
759 } else {
760 selection.start = buffer.anchor_before(tail);
761 selection.end = buffer.anchor_before(head);
762 selection.reversed = false;
763 }
764 } else {
765 log::error!("update_selection dispatched with no pending selection");
766 return;
767 }
768
769 self.set_scroll_position(scroll_position, cx);
770 cx.notify();
771 }
772
773 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
774 if self.pending_selection.is_some() {
775 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
776 self.update_selections(selections, false, cx);
777 }
778 }
779
780 pub fn is_selecting(&self) -> bool {
781 self.pending_selection.is_some()
782 }
783
784 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
785 if self.active_diagnostics.is_some() {
786 self.dismiss_diagnostics(cx);
787 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
788 let buffer = self.buffer.read(cx);
789 let selection = Selection {
790 id: selection.id,
791 start: selection.start.to_point(buffer),
792 end: selection.end.to_point(buffer),
793 reversed: selection.reversed,
794 goal: selection.goal,
795 };
796 if self.selections::<Point>(cx).next().is_none() {
797 self.update_selections(vec![selection], true, cx);
798 }
799 } else {
800 let mut oldest_selection = self.oldest_selection::<usize>(cx);
801 if self.selection_count(cx) == 1 {
802 oldest_selection.start = oldest_selection.head().clone();
803 oldest_selection.end = oldest_selection.head().clone();
804 }
805 self.update_selections(vec![oldest_selection], true, cx);
806 }
807 }
808
809 fn select_ranges<I, T>(&mut self, ranges: I, autoscroll: bool, cx: &mut ViewContext<Self>)
810 where
811 I: IntoIterator<Item = Range<T>>,
812 T: ToOffset,
813 {
814 let buffer = self.buffer.read(cx);
815 let selections = ranges
816 .into_iter()
817 .map(|range| {
818 let mut start = range.start.to_offset(buffer);
819 let mut end = range.end.to_offset(buffer);
820 let reversed = if start > end {
821 mem::swap(&mut start, &mut end);
822 true
823 } else {
824 false
825 };
826 Selection {
827 id: post_inc(&mut self.next_selection_id),
828 start: start,
829 end: end,
830 reversed,
831 goal: SelectionGoal::None,
832 }
833 })
834 .collect();
835 self.update_selections(selections, autoscroll, cx);
836 }
837
838 #[cfg(test)]
839 fn select_display_ranges<'a, T>(
840 &mut self,
841 ranges: T,
842 cx: &mut ViewContext<Self>,
843 ) -> anyhow::Result<()>
844 where
845 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
846 {
847 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
848 let selections = ranges
849 .into_iter()
850 .map(|range| {
851 let mut start = range.start;
852 let mut end = range.end;
853 let reversed = if start > end {
854 mem::swap(&mut start, &mut end);
855 true
856 } else {
857 false
858 };
859 Selection {
860 id: post_inc(&mut self.next_selection_id),
861 start: start.to_point(&display_map),
862 end: end.to_point(&display_map),
863 reversed,
864 goal: SelectionGoal::None,
865 }
866 })
867 .collect();
868 self.update_selections(selections, false, cx);
869 Ok(())
870 }
871
872 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
873 let text = action.0.as_ref();
874 if !self.skip_autoclose_end(text, cx) {
875 self.start_transaction(cx);
876 self.insert(text, cx);
877 self.autoclose_pairs(cx);
878 self.end_transaction(cx);
879 }
880 }
881
882 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
883 self.start_transaction(cx);
884 let mut old_selections = SmallVec::<[_; 32]>::new();
885 {
886 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
887 let buffer = self.buffer.read(cx);
888 for selection in selections.iter() {
889 let start_point = selection.start;
890 let indent = buffer
891 .indent_column_for_line(start_point.row)
892 .min(start_point.column);
893 let start = selection.start.to_offset(buffer);
894 let end = selection.end.to_offset(buffer);
895
896 let mut insert_extra_newline = false;
897 if let Some(language) = buffer.language() {
898 let leading_whitespace_len = buffer
899 .reversed_chars_at(start)
900 .take_while(|c| c.is_whitespace() && *c != '\n')
901 .map(|c| c.len_utf8())
902 .sum::<usize>();
903
904 let trailing_whitespace_len = buffer
905 .chars_at(end)
906 .take_while(|c| c.is_whitespace() && *c != '\n')
907 .map(|c| c.len_utf8())
908 .sum::<usize>();
909
910 insert_extra_newline = language.brackets().iter().any(|pair| {
911 let pair_start = pair.start.trim_end();
912 let pair_end = pair.end.trim_start();
913
914 pair.newline
915 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
916 && buffer.contains_str_at(
917 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
918 pair_start,
919 )
920 });
921 }
922
923 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
924 }
925 }
926
927 let mut new_selections = Vec::with_capacity(old_selections.len());
928 self.buffer.update(cx, |buffer, cx| {
929 let mut delta = 0_isize;
930 let mut pending_edit: Option<PendingEdit> = None;
931 for (_, range, indent, insert_extra_newline) in &old_selections {
932 if pending_edit.as_ref().map_or(false, |pending| {
933 pending.indent != *indent
934 || pending.insert_extra_newline != *insert_extra_newline
935 }) {
936 let pending = pending_edit.take().unwrap();
937 let mut new_text = String::with_capacity(1 + pending.indent as usize);
938 new_text.push('\n');
939 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
940 if pending.insert_extra_newline {
941 new_text = new_text.repeat(2);
942 }
943 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
944 delta += pending.delta;
945 }
946
947 let start = (range.start as isize + delta) as usize;
948 let end = (range.end as isize + delta) as usize;
949 let mut text_len = *indent as usize + 1;
950 if *insert_extra_newline {
951 text_len *= 2;
952 }
953
954 let pending = pending_edit.get_or_insert_with(Default::default);
955 pending.delta += text_len as isize - (end - start) as isize;
956 pending.indent = *indent;
957 pending.insert_extra_newline = *insert_extra_newline;
958 pending.ranges.push(start..end);
959 }
960
961 let pending = pending_edit.unwrap();
962 let mut new_text = String::with_capacity(1 + pending.indent as usize);
963 new_text.push('\n');
964 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
965 if pending.insert_extra_newline {
966 new_text = new_text.repeat(2);
967 }
968 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
969
970 let mut delta = 0_isize;
971 new_selections.extend(old_selections.into_iter().map(
972 |(id, range, indent, insert_extra_newline)| {
973 let start = (range.start as isize + delta) as usize;
974 let end = (range.end as isize + delta) as usize;
975 let text_before_cursor_len = indent as usize + 1;
976 let cursor = start + text_before_cursor_len;
977 let text_len = if insert_extra_newline {
978 text_before_cursor_len * 2
979 } else {
980 text_before_cursor_len
981 };
982 delta += text_len as isize - (end - start) as isize;
983 Selection {
984 id,
985 start: cursor,
986 end: cursor,
987 reversed: false,
988 goal: SelectionGoal::None,
989 }
990 },
991 ))
992 });
993
994 self.update_selections(new_selections, true, cx);
995 self.end_transaction(cx);
996
997 #[derive(Default)]
998 struct PendingEdit {
999 indent: u32,
1000 insert_extra_newline: bool,
1001 delta: isize,
1002 ranges: SmallVec<[Range<usize>; 32]>,
1003 }
1004 }
1005
1006 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1007 self.start_transaction(cx);
1008 let old_selections = self.selections::<usize>(cx).collect::<SmallVec<[_; 32]>>();
1009 let mut new_selections = Vec::new();
1010 self.buffer.update(cx, |buffer, cx| {
1011 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1012 buffer.edit_with_autoindent(edit_ranges, text, cx);
1013 let text_len = text.len() as isize;
1014 let mut delta = 0_isize;
1015 new_selections = old_selections
1016 .into_iter()
1017 .map(|selection| {
1018 let start = selection.start as isize;
1019 let end = selection.end as isize;
1020 let cursor = (start + delta + text_len) as usize;
1021 let deleted_count = end - start;
1022 delta += text_len - deleted_count;
1023 Selection {
1024 id: selection.id,
1025 start: cursor,
1026 end: cursor,
1027 reversed: false,
1028 goal: SelectionGoal::None,
1029 }
1030 })
1031 .collect();
1032 });
1033
1034 self.update_selections(new_selections, true, cx);
1035 self.end_transaction(cx);
1036 }
1037
1038 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1039 let selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1040 let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {
1041 let autoclose_pair = buffer.language().and_then(|language| {
1042 let first_selection_start = selections.first().unwrap().start;
1043 let pair = language.brackets().iter().find(|pair| {
1044 buffer.contains_str_at(
1045 first_selection_start.saturating_sub(pair.start.len()),
1046 &pair.start,
1047 )
1048 });
1049 pair.and_then(|pair| {
1050 let should_autoclose = selections[1..].iter().all(|selection| {
1051 buffer.contains_str_at(
1052 selection.start.saturating_sub(pair.start.len()),
1053 &pair.start,
1054 )
1055 });
1056
1057 if should_autoclose {
1058 Some(pair.clone())
1059 } else {
1060 None
1061 }
1062 })
1063 });
1064
1065 autoclose_pair.and_then(|pair| {
1066 let selection_ranges = selections
1067 .iter()
1068 .map(|selection| {
1069 let start = selection.start.to_offset(&*buffer);
1070 start..start
1071 })
1072 .collect::<SmallVec<[_; 32]>>();
1073
1074 buffer.edit(selection_ranges, &pair.end, cx);
1075
1076 if pair.end.len() == 1 {
1077 let mut delta = 0;
1078 Some(BracketPairState {
1079 ranges: buffer.anchor_range_set(
1080 Bias::Left,
1081 Bias::Right,
1082 selections.iter().map(move |selection| {
1083 let offset = selection.start + delta;
1084 delta += 1;
1085 offset..offset
1086 }),
1087 ),
1088 pair,
1089 })
1090 } else {
1091 None
1092 }
1093 })
1094 });
1095 self.autoclose_stack.extend(new_autoclose_pair_state);
1096 }
1097
1098 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1099 let old_selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1100 let autoclose_pair_state = if let Some(autoclose_pair_state) = self.autoclose_stack.last() {
1101 autoclose_pair_state
1102 } else {
1103 return false;
1104 };
1105 if text != autoclose_pair_state.pair.end {
1106 return false;
1107 }
1108
1109 debug_assert_eq!(old_selections.len(), autoclose_pair_state.ranges.len());
1110
1111 let buffer = self.buffer.read(cx);
1112 if old_selections
1113 .iter()
1114 .zip(autoclose_pair_state.ranges.ranges::<usize, _>(buffer))
1115 .all(|(selection, autoclose_range)| {
1116 let autoclose_range_end = autoclose_range.end.to_offset(buffer);
1117 selection.is_empty() && selection.start == autoclose_range_end
1118 })
1119 {
1120 let new_selections = old_selections
1121 .into_iter()
1122 .map(|selection| {
1123 let cursor = selection.start + 1;
1124 Selection {
1125 id: selection.id,
1126 start: cursor,
1127 end: cursor,
1128 reversed: false,
1129 goal: SelectionGoal::None,
1130 }
1131 })
1132 .collect();
1133 self.autoclose_stack.pop();
1134 self.update_selections(new_selections, true, cx);
1135 true
1136 } else {
1137 false
1138 }
1139 }
1140
1141 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1142 self.start_transaction(cx);
1143 self.select_all(&SelectAll, cx);
1144 self.insert("", cx);
1145 self.end_transaction(cx);
1146 }
1147
1148 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1149 self.start_transaction(cx);
1150 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1152 for selection in &mut selections {
1153 if selection.is_empty() {
1154 let head = selection.head().to_display_point(&display_map);
1155 let cursor = movement::left(&display_map, head)
1156 .unwrap()
1157 .to_point(&display_map);
1158 selection.set_head(cursor);
1159 selection.goal = SelectionGoal::None;
1160 }
1161 }
1162 self.update_selections(selections, true, cx);
1163 self.insert("", cx);
1164 self.end_transaction(cx);
1165 }
1166
1167 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1168 self.start_transaction(cx);
1169 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1170 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1171 for selection in &mut selections {
1172 if selection.is_empty() {
1173 let head = selection.head().to_display_point(&display_map);
1174 let cursor = movement::right(&display_map, head)
1175 .unwrap()
1176 .to_point(&display_map);
1177 selection.set_head(cursor);
1178 selection.goal = SelectionGoal::None;
1179 }
1180 }
1181 self.update_selections(selections, true, cx);
1182 self.insert(&"", cx);
1183 self.end_transaction(cx);
1184 }
1185
1186 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1187 self.start_transaction(cx);
1188 let tab_size = self.build_settings.borrow()(cx).tab_size;
1189 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1190 self.buffer.update(cx, |buffer, cx| {
1191 let mut last_indented_row = None;
1192 for selection in &mut selections {
1193 if selection.is_empty() {
1194 let char_column = buffer
1195 .chars_for_range(Point::new(selection.start.row, 0)..selection.start)
1196 .count();
1197 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1198 buffer.edit(
1199 [selection.start..selection.start],
1200 " ".repeat(chars_to_next_tab_stop),
1201 cx,
1202 );
1203 selection.start.column += chars_to_next_tab_stop as u32;
1204 selection.end = selection.start;
1205 } else {
1206 for row in selection.start.row..=selection.end.row {
1207 if last_indented_row != Some(row) {
1208 let char_column = buffer.indent_column_for_line(row) as usize;
1209 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1210 let row_start = Point::new(row, 0);
1211 buffer.edit(
1212 [row_start..row_start],
1213 " ".repeat(chars_to_next_tab_stop),
1214 cx,
1215 );
1216 last_indented_row = Some(row);
1217 }
1218 }
1219 }
1220 }
1221 });
1222
1223 self.update_selections(selections, true, cx);
1224 self.end_transaction(cx);
1225 }
1226
1227 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1228 self.start_transaction(cx);
1229
1230 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1231 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1232 let buffer = self.buffer.read(cx);
1233
1234 let mut row_delta = 0;
1235 let mut new_cursors = Vec::new();
1236 let mut edit_ranges = Vec::new();
1237 let mut selections = selections.iter().peekable();
1238 while let Some(selection) = selections.next() {
1239 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1240 let goal_display_column = selection.head().to_display_point(&display_map).column();
1241
1242 // Accumulate contiguous regions of rows that we want to delete.
1243 while let Some(next_selection) = selections.peek() {
1244 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1245 if next_rows.start <= rows.end {
1246 rows.end = next_rows.end;
1247 selections.next().unwrap();
1248 } else {
1249 break;
1250 }
1251 }
1252
1253 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
1254 let edit_end;
1255 let cursor_buffer_row;
1256 if buffer.max_point().row >= rows.end {
1257 // If there's a line after the range, delete the \n from the end of the row range
1258 // and position the cursor on the next line.
1259 edit_end = Point::new(rows.end, 0).to_offset(buffer);
1260 cursor_buffer_row = rows.start;
1261 } else {
1262 // If there isn't a line after the range, delete the \n from the line before the
1263 // start of the row range and position the cursor there.
1264 edit_start = edit_start.saturating_sub(1);
1265 edit_end = buffer.len();
1266 cursor_buffer_row = rows.start.saturating_sub(1);
1267 }
1268
1269 let mut cursor =
1270 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1271 *cursor.column_mut() =
1272 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1273 row_delta += rows.len() as u32;
1274
1275 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1276 edit_ranges.push(edit_start..edit_end);
1277 }
1278
1279 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1280 let new_selections = new_cursors
1281 .into_iter()
1282 .map(|(id, cursor)| Selection {
1283 id,
1284 start: cursor,
1285 end: cursor,
1286 reversed: false,
1287 goal: SelectionGoal::None,
1288 })
1289 .collect();
1290 self.buffer
1291 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1292 self.update_selections(new_selections, true, cx);
1293 self.end_transaction(cx);
1294 }
1295
1296 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1297 self.start_transaction(cx);
1298
1299 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1300 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1301 let buffer = self.buffer.read(cx);
1302
1303 let mut edits = Vec::new();
1304 let mut selections_iter = selections.iter().peekable();
1305 while let Some(selection) = selections_iter.next() {
1306 // Avoid duplicating the same lines twice.
1307 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1308
1309 while let Some(next_selection) = selections_iter.peek() {
1310 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1311 if next_rows.start <= rows.end - 1 {
1312 rows.end = next_rows.end;
1313 selections_iter.next().unwrap();
1314 } else {
1315 break;
1316 }
1317 }
1318
1319 // Copy the text from the selected row region and splice it at the start of the region.
1320 let start = Point::new(rows.start, 0);
1321 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1322 let text = buffer
1323 .text_for_range(start..end)
1324 .chain(Some("\n"))
1325 .collect::<String>();
1326 edits.push((start, text, rows.len() as u32));
1327 }
1328
1329 let mut edits_iter = edits.iter().peekable();
1330 let mut row_delta = 0;
1331 for selection in selections.iter_mut() {
1332 while let Some((point, _, line_count)) = edits_iter.peek() {
1333 if *point <= selection.start {
1334 row_delta += line_count;
1335 edits_iter.next();
1336 } else {
1337 break;
1338 }
1339 }
1340 selection.start.row += row_delta;
1341 selection.end.row += row_delta;
1342 }
1343
1344 self.buffer.update(cx, |buffer, cx| {
1345 for (point, text, _) in edits.into_iter().rev() {
1346 buffer.edit(Some(point..point), text, cx);
1347 }
1348 });
1349
1350 self.update_selections(selections, true, cx);
1351 self.end_transaction(cx);
1352 }
1353
1354 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1355 self.start_transaction(cx);
1356
1357 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1358 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1359 let buffer = self.buffer.read(cx);
1360
1361 let mut edits = Vec::new();
1362 let mut new_selection_ranges = Vec::new();
1363 let mut old_folds = Vec::new();
1364 let mut new_folds = Vec::new();
1365
1366 let mut selections = selections.iter().peekable();
1367 let mut contiguous_selections = Vec::new();
1368 while let Some(selection) = selections.next() {
1369 // Accumulate contiguous regions of rows that we want to move.
1370 contiguous_selections.push(selection.point_range(buffer));
1371 let SpannedRows {
1372 mut buffer_rows,
1373 mut display_rows,
1374 } = selection.spanned_rows(false, &display_map);
1375
1376 while let Some(next_selection) = selections.peek() {
1377 let SpannedRows {
1378 buffer_rows: next_buffer_rows,
1379 display_rows: next_display_rows,
1380 } = next_selection.spanned_rows(false, &display_map);
1381 if next_buffer_rows.start <= buffer_rows.end {
1382 buffer_rows.end = next_buffer_rows.end;
1383 display_rows.end = next_display_rows.end;
1384 contiguous_selections.push(next_selection.point_range(buffer));
1385 selections.next().unwrap();
1386 } else {
1387 break;
1388 }
1389 }
1390
1391 // Cut the text from the selected rows and paste it at the start of the previous line.
1392 if display_rows.start != 0 {
1393 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1394 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1395 .to_offset(buffer);
1396
1397 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1398 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1399 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
1400
1401 let mut text = String::new();
1402 text.extend(buffer.text_for_range(start..end));
1403 text.push('\n');
1404 edits.push((
1405 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1406 text,
1407 ));
1408 edits.push((start - 1..end, String::new()));
1409
1410 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1411
1412 // Move selections up.
1413 for range in &mut contiguous_selections {
1414 range.start.row -= row_delta;
1415 range.end.row -= row_delta;
1416 }
1417
1418 // Move folds up.
1419 old_folds.push(start..end);
1420 for fold in display_map.folds_in_range(start..end) {
1421 let mut start = fold.start.to_point(buffer);
1422 let mut end = fold.end.to_point(buffer);
1423 start.row -= row_delta;
1424 end.row -= row_delta;
1425 new_folds.push(start..end);
1426 }
1427 }
1428
1429 new_selection_ranges.extend(contiguous_selections.drain(..));
1430 }
1431
1432 self.unfold_ranges(old_folds, cx);
1433 self.buffer.update(cx, |buffer, cx| {
1434 for (range, text) in edits.into_iter().rev() {
1435 buffer.edit(Some(range), text, cx);
1436 }
1437 });
1438 self.fold_ranges(new_folds, cx);
1439 self.select_ranges(new_selection_ranges, true, cx);
1440
1441 self.end_transaction(cx);
1442 }
1443
1444 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1445 self.start_transaction(cx);
1446
1447 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1448 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1449 let buffer = self.buffer.read(cx);
1450
1451 let mut edits = Vec::new();
1452 let mut new_selection_ranges = Vec::new();
1453 let mut old_folds = Vec::new();
1454 let mut new_folds = Vec::new();
1455
1456 let mut selections = selections.iter().peekable();
1457 let mut contiguous_selections = Vec::new();
1458 while let Some(selection) = selections.next() {
1459 // Accumulate contiguous regions of rows that we want to move.
1460 contiguous_selections.push(selection.point_range(buffer));
1461 let SpannedRows {
1462 mut buffer_rows,
1463 mut display_rows,
1464 } = selection.spanned_rows(false, &display_map);
1465 while let Some(next_selection) = selections.peek() {
1466 let SpannedRows {
1467 buffer_rows: next_buffer_rows,
1468 display_rows: next_display_rows,
1469 } = next_selection.spanned_rows(false, &display_map);
1470 if next_buffer_rows.start <= buffer_rows.end {
1471 buffer_rows.end = next_buffer_rows.end;
1472 display_rows.end = next_display_rows.end;
1473 contiguous_selections.push(next_selection.point_range(buffer));
1474 selections.next().unwrap();
1475 } else {
1476 break;
1477 }
1478 }
1479
1480 // Cut the text from the selected rows and paste it at the end of the next line.
1481 if display_rows.end <= display_map.max_point().row() {
1482 let start = Point::new(buffer_rows.start, 0).to_offset(buffer);
1483 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1484 .to_offset(buffer);
1485
1486 let next_row_display_end =
1487 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1488 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1489 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
1490
1491 let mut text = String::new();
1492 text.push('\n');
1493 text.extend(buffer.text_for_range(start..end));
1494 edits.push((start..end + 1, String::new()));
1495 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1496
1497 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1498
1499 // Move selections down.
1500 for range in &mut contiguous_selections {
1501 range.start.row += row_delta;
1502 range.end.row += row_delta;
1503 }
1504
1505 // Move folds down.
1506 old_folds.push(start..end);
1507 for fold in display_map.folds_in_range(start..end) {
1508 let mut start = fold.start.to_point(buffer);
1509 let mut end = fold.end.to_point(buffer);
1510 start.row += row_delta;
1511 end.row += row_delta;
1512 new_folds.push(start..end);
1513 }
1514 }
1515
1516 new_selection_ranges.extend(contiguous_selections.drain(..));
1517 }
1518
1519 self.unfold_ranges(old_folds, cx);
1520 self.buffer.update(cx, |buffer, cx| {
1521 for (range, text) in edits.into_iter().rev() {
1522 buffer.edit(Some(range), text, cx);
1523 }
1524 });
1525 self.fold_ranges(new_folds, cx);
1526 self.select_ranges(new_selection_ranges, true, cx);
1527
1528 self.end_transaction(cx);
1529 }
1530
1531 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1532 self.start_transaction(cx);
1533 let mut text = String::new();
1534 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1535 let mut clipboard_selections = Vec::with_capacity(selections.len());
1536 {
1537 let buffer = self.buffer.read(cx);
1538 let max_point = buffer.max_point();
1539 for selection in &mut selections {
1540 let is_entire_line = selection.is_empty();
1541 if is_entire_line {
1542 selection.start = Point::new(selection.start.row, 0);
1543 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1544 }
1545 let mut len = 0;
1546 for chunk in buffer.text_for_range(selection.start..selection.end) {
1547 text.push_str(chunk);
1548 len += chunk.len();
1549 }
1550 clipboard_selections.push(ClipboardSelection {
1551 len,
1552 is_entire_line,
1553 });
1554 }
1555 }
1556 self.update_selections(selections, true, cx);
1557 self.insert("", cx);
1558 self.end_transaction(cx);
1559
1560 cx.as_mut()
1561 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1562 }
1563
1564 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1565 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1566 let buffer = self.buffer.read(cx);
1567 let max_point = buffer.max_point();
1568 let mut text = String::new();
1569 let mut clipboard_selections = Vec::with_capacity(selections.len());
1570 for selection in selections.iter() {
1571 let mut start = selection.start;
1572 let mut end = selection.end;
1573 let is_entire_line = selection.is_empty();
1574 if is_entire_line {
1575 start = Point::new(start.row, 0);
1576 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1577 }
1578 let mut len = 0;
1579 for chunk in buffer.text_for_range(start..end) {
1580 text.push_str(chunk);
1581 len += chunk.len();
1582 }
1583 clipboard_selections.push(ClipboardSelection {
1584 len,
1585 is_entire_line,
1586 });
1587 }
1588
1589 cx.as_mut()
1590 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1591 }
1592
1593 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1594 if let Some(item) = cx.as_mut().read_from_clipboard() {
1595 let clipboard_text = item.text();
1596 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1597 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
1598 let all_selections_were_entire_line =
1599 clipboard_selections.iter().all(|s| s.is_entire_line);
1600 if clipboard_selections.len() != selections.len() {
1601 clipboard_selections.clear();
1602 }
1603
1604 let mut delta = 0_isize;
1605 let mut start_offset = 0;
1606 for (i, selection) in selections.iter_mut().enumerate() {
1607 let to_insert;
1608 let entire_line;
1609 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1610 let end_offset = start_offset + clipboard_selection.len;
1611 to_insert = &clipboard_text[start_offset..end_offset];
1612 entire_line = clipboard_selection.is_entire_line;
1613 start_offset = end_offset
1614 } else {
1615 to_insert = clipboard_text.as_str();
1616 entire_line = all_selections_were_entire_line;
1617 }
1618
1619 selection.start = (selection.start as isize + delta) as usize;
1620 selection.end = (selection.end as isize + delta) as usize;
1621
1622 self.buffer.update(cx, |buffer, cx| {
1623 // If the corresponding selection was empty when this slice of the
1624 // clipboard text was written, then the entire line containing the
1625 // selection was copied. If this selection is also currently empty,
1626 // then paste the line before the current line of the buffer.
1627 let range = if selection.is_empty() && entire_line {
1628 let column = selection.start.to_point(&*buffer).column as usize;
1629 let line_start = selection.start - column;
1630 line_start..line_start
1631 } else {
1632 selection.start..selection.end
1633 };
1634
1635 delta += to_insert.len() as isize - range.len() as isize;
1636 buffer.edit([range], to_insert, cx);
1637 selection.start += to_insert.len();
1638 selection.end = selection.start;
1639 });
1640 }
1641 self.update_selections(selections, true, cx);
1642 } else {
1643 self.insert(clipboard_text, cx);
1644 }
1645 }
1646 }
1647
1648 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1649 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1650 self.request_autoscroll(cx);
1651 }
1652
1653 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1654 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1655 self.request_autoscroll(cx);
1656 }
1657
1658 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1659 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1660 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1661 for selection in &mut selections {
1662 let start = selection.start.to_display_point(&display_map);
1663 let end = selection.end.to_display_point(&display_map);
1664
1665 if start != end {
1666 selection.end = selection.start.clone();
1667 } else {
1668 let cursor = movement::left(&display_map, start)
1669 .unwrap()
1670 .to_point(&display_map);
1671 selection.start = cursor.clone();
1672 selection.end = cursor;
1673 }
1674 selection.reversed = false;
1675 selection.goal = SelectionGoal::None;
1676 }
1677 self.update_selections(selections, true, cx);
1678 }
1679
1680 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
1681 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1682 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1683 for selection in &mut selections {
1684 let head = selection.head().to_display_point(&display_map);
1685 let cursor = movement::left(&display_map, head)
1686 .unwrap()
1687 .to_point(&display_map);
1688 selection.set_head(cursor);
1689 selection.goal = SelectionGoal::None;
1690 }
1691 self.update_selections(selections, true, cx);
1692 }
1693
1694 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
1695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1696 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1697 for selection in &mut selections {
1698 let start = selection.start.to_display_point(&display_map);
1699 let end = selection.end.to_display_point(&display_map);
1700
1701 if start != end {
1702 selection.start = selection.end.clone();
1703 } else {
1704 let cursor = movement::right(&display_map, end)
1705 .unwrap()
1706 .to_point(&display_map);
1707 selection.start = cursor;
1708 selection.end = cursor;
1709 }
1710 selection.reversed = false;
1711 selection.goal = SelectionGoal::None;
1712 }
1713 self.update_selections(selections, true, cx);
1714 }
1715
1716 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
1717 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1718 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1719 for selection in &mut selections {
1720 let head = selection.head().to_display_point(&display_map);
1721 let cursor = movement::right(&display_map, head)
1722 .unwrap()
1723 .to_point(&display_map);
1724 selection.set_head(cursor);
1725 selection.goal = SelectionGoal::None;
1726 }
1727 self.update_selections(selections, true, cx);
1728 }
1729
1730 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
1731 if matches!(self.mode, EditorMode::SingleLine) {
1732 cx.propagate_action();
1733 return;
1734 }
1735
1736 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1737 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1738 for selection in &mut selections {
1739 let start = selection.start.to_display_point(&display_map);
1740 let end = selection.end.to_display_point(&display_map);
1741 if start != end {
1742 selection.goal = SelectionGoal::None;
1743 }
1744
1745 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
1746 let cursor = start.to_point(&display_map);
1747 selection.start = cursor;
1748 selection.end = cursor;
1749 selection.goal = goal;
1750 selection.reversed = false;
1751 }
1752 self.update_selections(selections, true, cx);
1753 }
1754
1755 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
1756 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1757 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1758 for selection in &mut selections {
1759 let head = selection.head().to_display_point(&display_map);
1760 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
1761 let cursor = head.to_point(&display_map);
1762 selection.set_head(cursor);
1763 selection.goal = goal;
1764 }
1765 self.update_selections(selections, true, cx);
1766 }
1767
1768 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
1769 if matches!(self.mode, EditorMode::SingleLine) {
1770 cx.propagate_action();
1771 return;
1772 }
1773
1774 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1775 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1776 for selection in &mut selections {
1777 let start = selection.start.to_display_point(&display_map);
1778 let end = selection.end.to_display_point(&display_map);
1779 if start != end {
1780 selection.goal = SelectionGoal::None;
1781 }
1782
1783 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
1784 let cursor = start.to_point(&display_map);
1785 selection.start = cursor;
1786 selection.end = cursor;
1787 selection.goal = goal;
1788 selection.reversed = false;
1789 }
1790 self.update_selections(selections, true, cx);
1791 }
1792
1793 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
1794 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1795 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1796 for selection in &mut selections {
1797 let head = selection.head().to_display_point(&display_map);
1798 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
1799 let cursor = head.to_point(&display_map);
1800 selection.set_head(cursor);
1801 selection.goal = goal;
1802 }
1803 self.update_selections(selections, true, cx);
1804 }
1805
1806 pub fn move_to_previous_word_boundary(
1807 &mut self,
1808 _: &MoveToPreviousWordBoundary,
1809 cx: &mut ViewContext<Self>,
1810 ) {
1811 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1812 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1813 for selection in &mut selections {
1814 let head = selection.head().to_display_point(&display_map);
1815 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
1816 selection.start = cursor.clone();
1817 selection.end = cursor;
1818 selection.reversed = false;
1819 selection.goal = SelectionGoal::None;
1820 }
1821 self.update_selections(selections, true, cx);
1822 }
1823
1824 pub fn select_to_previous_word_boundary(
1825 &mut self,
1826 _: &SelectToPreviousWordBoundary,
1827 cx: &mut ViewContext<Self>,
1828 ) {
1829 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1830 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1831 for selection in &mut selections {
1832 let head = selection.head().to_display_point(&display_map);
1833 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
1834 selection.set_head(cursor);
1835 selection.goal = SelectionGoal::None;
1836 }
1837 self.update_selections(selections, true, cx);
1838 }
1839
1840 pub fn delete_to_previous_word_boundary(
1841 &mut self,
1842 _: &DeleteToPreviousWordBoundary,
1843 cx: &mut ViewContext<Self>,
1844 ) {
1845 self.start_transaction(cx);
1846 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1847 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1848 for selection in &mut selections {
1849 if selection.is_empty() {
1850 let head = selection.head().to_display_point(&display_map);
1851 let cursor =
1852 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
1853 selection.set_head(cursor);
1854 selection.goal = SelectionGoal::None;
1855 }
1856 }
1857 self.update_selections(selections, true, cx);
1858 self.insert("", cx);
1859 self.end_transaction(cx);
1860 }
1861
1862 pub fn move_to_next_word_boundary(
1863 &mut self,
1864 _: &MoveToNextWordBoundary,
1865 cx: &mut ViewContext<Self>,
1866 ) {
1867 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1868 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1869 for selection in &mut selections {
1870 let head = selection.head().to_display_point(&display_map);
1871 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
1872 selection.start = cursor;
1873 selection.end = cursor;
1874 selection.reversed = false;
1875 selection.goal = SelectionGoal::None;
1876 }
1877 self.update_selections(selections, true, cx);
1878 }
1879
1880 pub fn select_to_next_word_boundary(
1881 &mut self,
1882 _: &SelectToNextWordBoundary,
1883 cx: &mut ViewContext<Self>,
1884 ) {
1885 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1886 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1887 for selection in &mut selections {
1888 let head = selection.head().to_display_point(&display_map);
1889 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
1890 selection.set_head(cursor);
1891 selection.goal = SelectionGoal::None;
1892 }
1893 self.update_selections(selections, true, cx);
1894 }
1895
1896 pub fn delete_to_next_word_boundary(
1897 &mut self,
1898 _: &DeleteToNextWordBoundary,
1899 cx: &mut ViewContext<Self>,
1900 ) {
1901 self.start_transaction(cx);
1902 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1903 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1904 for selection in &mut selections {
1905 if selection.is_empty() {
1906 let head = selection.head().to_display_point(&display_map);
1907 let cursor =
1908 movement::next_word_boundary(&display_map, head).to_point(&display_map);
1909 selection.set_head(cursor);
1910 selection.goal = SelectionGoal::None;
1911 }
1912 }
1913 self.update_selections(selections, true, cx);
1914 self.insert("", cx);
1915 self.end_transaction(cx);
1916 }
1917
1918 pub fn move_to_beginning_of_line(
1919 &mut self,
1920 _: &MoveToBeginningOfLine,
1921 cx: &mut ViewContext<Self>,
1922 ) {
1923 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1924 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1925 for selection in &mut selections {
1926 let head = selection.head().to_display_point(&display_map);
1927 let new_head = movement::line_beginning(&display_map, head, true).unwrap();
1928 let cursor = new_head.to_point(&display_map);
1929 selection.start = cursor;
1930 selection.end = cursor;
1931 selection.reversed = false;
1932 selection.goal = SelectionGoal::None;
1933 }
1934 self.update_selections(selections, true, cx);
1935 }
1936
1937 pub fn select_to_beginning_of_line(
1938 &mut self,
1939 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
1940 cx: &mut ViewContext<Self>,
1941 ) {
1942 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1943 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1944 for selection in &mut selections {
1945 let head = selection.head().to_display_point(&display_map);
1946 let new_head = movement::line_beginning(&display_map, head, *toggle_indent).unwrap();
1947 selection.set_head(new_head.to_point(&display_map));
1948 selection.goal = SelectionGoal::None;
1949 }
1950 self.update_selections(selections, true, cx);
1951 }
1952
1953 pub fn delete_to_beginning_of_line(
1954 &mut self,
1955 _: &DeleteToBeginningOfLine,
1956 cx: &mut ViewContext<Self>,
1957 ) {
1958 self.start_transaction(cx);
1959 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
1960 self.backspace(&Backspace, cx);
1961 self.end_transaction(cx);
1962 }
1963
1964 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
1965 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1966 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1967 {
1968 for selection in &mut selections {
1969 let head = selection.head().to_display_point(&display_map);
1970 let new_head = movement::line_end(&display_map, head).unwrap();
1971 let anchor = new_head.to_point(&display_map);
1972 selection.start = anchor.clone();
1973 selection.end = anchor;
1974 selection.reversed = false;
1975 selection.goal = SelectionGoal::None;
1976 }
1977 }
1978 self.update_selections(selections, true, cx);
1979 }
1980
1981 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
1982 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1983 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
1984 for selection in &mut selections {
1985 let head = selection.head().to_display_point(&display_map);
1986 let new_head = movement::line_end(&display_map, head).unwrap();
1987 selection.set_head(new_head.to_point(&display_map));
1988 selection.goal = SelectionGoal::None;
1989 }
1990 self.update_selections(selections, true, cx);
1991 }
1992
1993 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
1994 self.start_transaction(cx);
1995 self.select_to_end_of_line(&SelectToEndOfLine, cx);
1996 self.delete(&Delete, cx);
1997 self.end_transaction(cx);
1998 }
1999
2000 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2001 self.start_transaction(cx);
2002 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2003 self.cut(&Cut, cx);
2004 self.end_transaction(cx);
2005 }
2006
2007 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2008 let selection = Selection {
2009 id: post_inc(&mut self.next_selection_id),
2010 start: 0,
2011 end: 0,
2012 reversed: false,
2013 goal: SelectionGoal::None,
2014 };
2015 self.update_selections(vec![selection], true, cx);
2016 }
2017
2018 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2019 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
2020 selection.set_head(Point::zero());
2021 self.update_selections(vec![selection], true, cx);
2022 }
2023
2024 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2025 let buffer = self.buffer.read(cx);
2026 let cursor = buffer.len();
2027 let selection = Selection {
2028 id: post_inc(&mut self.next_selection_id),
2029 start: cursor,
2030 end: cursor,
2031 reversed: false,
2032 goal: SelectionGoal::None,
2033 };
2034 self.update_selections(vec![selection], true, cx);
2035 }
2036
2037 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2038 let mut selection = self.selections::<usize>(cx).last().unwrap().clone();
2039 selection.set_head(self.buffer.read(cx).len());
2040 self.update_selections(vec![selection], true, cx);
2041 }
2042
2043 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2044 let selection = Selection {
2045 id: post_inc(&mut self.next_selection_id),
2046 start: 0,
2047 end: self.buffer.read(cx).len(),
2048 reversed: false,
2049 goal: SelectionGoal::None,
2050 };
2051 self.update_selections(vec![selection], false, cx);
2052 }
2053
2054 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2055 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2056 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2057 let buffer = self.buffer.read(cx);
2058 let max_point = buffer.max_point();
2059 for selection in &mut selections {
2060 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2061 selection.start = Point::new(rows.start, 0);
2062 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2063 selection.reversed = false;
2064 }
2065 self.update_selections(selections, true, cx);
2066 }
2067
2068 pub fn split_selection_into_lines(
2069 &mut self,
2070 _: &SplitSelectionIntoLines,
2071 cx: &mut ViewContext<Self>,
2072 ) {
2073 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2074 let buffer = self.buffer.read(cx);
2075
2076 let mut to_unfold = Vec::new();
2077 let mut new_selections = Vec::new();
2078 for selection in selections.iter() {
2079 for row in selection.start.row..selection.end.row {
2080 let cursor = Point::new(row, buffer.line_len(row));
2081 new_selections.push(Selection {
2082 id: post_inc(&mut self.next_selection_id),
2083 start: cursor,
2084 end: cursor,
2085 reversed: false,
2086 goal: SelectionGoal::None,
2087 });
2088 }
2089 new_selections.push(Selection {
2090 id: selection.id,
2091 start: selection.end,
2092 end: selection.end,
2093 reversed: false,
2094 goal: SelectionGoal::None,
2095 });
2096 to_unfold.push(selection.start..selection.end);
2097 }
2098 self.unfold_ranges(to_unfold, cx);
2099 self.update_selections(new_selections, true, cx);
2100 }
2101
2102 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2103 self.add_selection(true, cx);
2104 }
2105
2106 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2107 self.add_selection(false, cx);
2108 }
2109
2110 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2111 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2112 let mut selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2113 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2114 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2115 let range = oldest_selection.display_range(&display_map).sorted();
2116 let columns = cmp::min(range.start.column(), range.end.column())
2117 ..cmp::max(range.start.column(), range.end.column());
2118
2119 selections.clear();
2120 let mut stack = Vec::new();
2121 for row in range.start.row()..=range.end.row() {
2122 if let Some(selection) = self.build_columnar_selection(
2123 &display_map,
2124 row,
2125 &columns,
2126 oldest_selection.reversed,
2127 ) {
2128 stack.push(selection.id);
2129 selections.push(selection);
2130 }
2131 }
2132
2133 if above {
2134 stack.reverse();
2135 }
2136
2137 AddSelectionsState { above, stack }
2138 });
2139
2140 let last_added_selection = *state.stack.last().unwrap();
2141 let mut new_selections = Vec::new();
2142 if above == state.above {
2143 let end_row = if above {
2144 0
2145 } else {
2146 display_map.max_point().row()
2147 };
2148
2149 'outer: for selection in selections {
2150 if selection.id == last_added_selection {
2151 let range = selection.display_range(&display_map).sorted();
2152 debug_assert_eq!(range.start.row(), range.end.row());
2153 let mut row = range.start.row();
2154 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2155 {
2156 start..end
2157 } else {
2158 cmp::min(range.start.column(), range.end.column())
2159 ..cmp::max(range.start.column(), range.end.column())
2160 };
2161
2162 while row != end_row {
2163 if above {
2164 row -= 1;
2165 } else {
2166 row += 1;
2167 }
2168
2169 if let Some(new_selection) = self.build_columnar_selection(
2170 &display_map,
2171 row,
2172 &columns,
2173 selection.reversed,
2174 ) {
2175 state.stack.push(new_selection.id);
2176 if above {
2177 new_selections.push(new_selection);
2178 new_selections.push(selection);
2179 } else {
2180 new_selections.push(selection);
2181 new_selections.push(new_selection);
2182 }
2183
2184 continue 'outer;
2185 }
2186 }
2187 }
2188
2189 new_selections.push(selection);
2190 }
2191 } else {
2192 new_selections = selections;
2193 new_selections.retain(|s| s.id != last_added_selection);
2194 state.stack.pop();
2195 }
2196
2197 self.update_selections(new_selections, true, cx);
2198 if state.stack.len() > 1 {
2199 self.add_selections_state = Some(state);
2200 }
2201 }
2202
2203 pub fn select_larger_syntax_node(
2204 &mut self,
2205 _: &SelectLargerSyntaxNode,
2206 cx: &mut ViewContext<Self>,
2207 ) {
2208 let old_selections = self.selections::<usize>(cx).collect::<Box<_>>();
2209 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2210 let buffer = self.buffer.read(cx);
2211
2212 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2213 let mut selected_larger_node = false;
2214 let mut new_selections = old_selections
2215 .iter()
2216 .map(|selection| {
2217 let old_range = selection.start..selection.end;
2218 let mut new_range = old_range.clone();
2219 while let Some(containing_range) =
2220 buffer.range_for_syntax_ancestor(new_range.clone())
2221 {
2222 new_range = containing_range;
2223 if !display_map.intersects_fold(new_range.start)
2224 && !display_map.intersects_fold(new_range.end)
2225 {
2226 break;
2227 }
2228 }
2229
2230 selected_larger_node |= new_range != old_range;
2231 Selection {
2232 id: selection.id,
2233 start: new_range.start,
2234 end: new_range.end,
2235 goal: SelectionGoal::None,
2236 reversed: selection.reversed,
2237 }
2238 })
2239 .collect::<Vec<_>>();
2240
2241 if selected_larger_node {
2242 stack.push(old_selections);
2243 new_selections.sort_unstable_by_key(|selection| selection.start);
2244 self.update_selections(new_selections, true, cx);
2245 }
2246 self.select_larger_syntax_node_stack = stack;
2247 }
2248
2249 pub fn select_smaller_syntax_node(
2250 &mut self,
2251 _: &SelectSmallerSyntaxNode,
2252 cx: &mut ViewContext<Self>,
2253 ) {
2254 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2255 if let Some(selections) = stack.pop() {
2256 self.update_selections(selections.to_vec(), true, cx);
2257 }
2258 self.select_larger_syntax_node_stack = stack;
2259 }
2260
2261 pub fn move_to_enclosing_bracket(
2262 &mut self,
2263 _: &MoveToEnclosingBracket,
2264 cx: &mut ViewContext<Self>,
2265 ) {
2266 let mut selections = self.selections::<usize>(cx).collect::<Vec<_>>();
2267 let buffer = self.buffer.read(cx.as_ref());
2268 for selection in &mut selections {
2269 if let Some((open_range, close_range)) =
2270 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2271 {
2272 let close_range = close_range.to_inclusive();
2273 let destination = if close_range.contains(&selection.start)
2274 && close_range.contains(&selection.end)
2275 {
2276 open_range.end
2277 } else {
2278 *close_range.start()
2279 };
2280 selection.start = destination;
2281 selection.end = destination;
2282 }
2283 }
2284
2285 self.update_selections(selections, true, cx);
2286 }
2287
2288 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2289 let selection = self.newest_selection::<usize>(cx);
2290 let buffer = self.buffer.read(cx.as_ref());
2291 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2292 active_diagnostics
2293 .primary_range
2294 .to_offset(buffer)
2295 .to_inclusive()
2296 });
2297 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2298 if active_primary_range.contains(&selection.head()) {
2299 *active_primary_range.end()
2300 } else {
2301 selection.head()
2302 }
2303 } else {
2304 selection.head()
2305 };
2306
2307 loop {
2308 let next_group = buffer
2309 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2310 .find_map(|(range, diagnostic)| {
2311 if diagnostic.is_primary
2312 && !range.is_empty()
2313 && Some(range.end) != active_primary_range.as_ref().map(|r| *r.end())
2314 {
2315 Some((range, diagnostic.group_id))
2316 } else {
2317 None
2318 }
2319 });
2320
2321 if let Some((primary_range, group_id)) = next_group {
2322 self.activate_diagnostics(group_id, cx);
2323 self.update_selections(
2324 vec![Selection {
2325 id: selection.id,
2326 start: primary_range.start,
2327 end: primary_range.start,
2328 reversed: false,
2329 goal: SelectionGoal::None,
2330 }],
2331 true,
2332 cx,
2333 );
2334 break;
2335 } else if search_start == 0 {
2336 break;
2337 } else {
2338 // Cycle around to the start of the buffer.
2339 search_start = 0;
2340 }
2341 }
2342 }
2343
2344 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2345 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2346 let buffer = self.buffer.read(cx);
2347 let primary_range_start = active_diagnostics.primary_range.start.to_offset(buffer);
2348 let is_valid = buffer
2349 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2350 .any(|(range, diagnostic)| {
2351 diagnostic.is_primary
2352 && !range.is_empty()
2353 && range.start == primary_range_start
2354 && diagnostic.message == active_diagnostics.primary_message
2355 });
2356
2357 if is_valid != active_diagnostics.is_valid {
2358 active_diagnostics.is_valid = is_valid;
2359 let mut new_styles = HashMap::new();
2360 for (block_id, diagnostic) in &active_diagnostics.blocks {
2361 let severity = diagnostic.severity;
2362 let message_len = diagnostic.message.len();
2363 new_styles.insert(
2364 *block_id,
2365 (
2366 Some({
2367 let build_settings = self.build_settings.clone();
2368 move |cx: &AppContext| {
2369 let settings = build_settings.borrow()(cx);
2370 vec![(
2371 message_len,
2372 diagnostic_style(severity, is_valid, &settings.style)
2373 .text
2374 .into(),
2375 )]
2376 }
2377 }),
2378 Some({
2379 let build_settings = self.build_settings.clone();
2380 move |cx: &AppContext| {
2381 let settings = build_settings.borrow()(cx);
2382 diagnostic_style(severity, is_valid, &settings.style).block
2383 }
2384 }),
2385 ),
2386 );
2387 }
2388 self.display_map
2389 .update(cx, |display_map, _| display_map.restyle_blocks(new_styles));
2390 }
2391 }
2392 }
2393
2394 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2395 self.dismiss_diagnostics(cx);
2396 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2397 let buffer = self.buffer.read(cx);
2398
2399 let mut primary_range = None;
2400 let mut primary_message = None;
2401 let mut group_end = Point::zero();
2402 let diagnostic_group = buffer
2403 .diagnostic_group::<Point>(group_id)
2404 .map(|(range, diagnostic)| {
2405 if range.end > group_end {
2406 group_end = range.end;
2407 }
2408 if diagnostic.is_primary {
2409 primary_range = Some(range.clone());
2410 primary_message = Some(diagnostic.message.clone());
2411 }
2412 (range, diagnostic.clone())
2413 })
2414 .collect::<Vec<_>>();
2415 let primary_range = primary_range.unwrap();
2416 let primary_message = primary_message.unwrap();
2417 let primary_range =
2418 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2419
2420 let blocks = display_map
2421 .insert_blocks(
2422 diagnostic_group.iter().map(|(range, diagnostic)| {
2423 let build_settings = self.build_settings.clone();
2424 let message_len = diagnostic.message.len();
2425 let severity = diagnostic.severity;
2426 BlockProperties {
2427 position: range.start,
2428 text: diagnostic.message.as_str(),
2429 build_runs: Some(Arc::new({
2430 let build_settings = build_settings.clone();
2431 move |cx| {
2432 let settings = build_settings.borrow()(cx);
2433 vec![(
2434 message_len,
2435 diagnostic_style(severity, true, &settings.style)
2436 .text
2437 .into(),
2438 )]
2439 }
2440 })),
2441 build_style: Some(Arc::new({
2442 let build_settings = build_settings.clone();
2443 move |cx| {
2444 let settings = build_settings.borrow()(cx);
2445 diagnostic_style(severity, true, &settings.style).block
2446 }
2447 })),
2448 disposition: BlockDisposition::Below,
2449 }
2450 }),
2451 cx,
2452 )
2453 .into_iter()
2454 .zip(
2455 diagnostic_group
2456 .into_iter()
2457 .map(|(_, diagnostic)| diagnostic),
2458 )
2459 .collect();
2460
2461 Some(ActiveDiagnosticGroup {
2462 primary_range,
2463 primary_message,
2464 blocks,
2465 is_valid: true,
2466 })
2467 });
2468 }
2469
2470 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2471 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2472 self.display_map.update(cx, |display_map, cx| {
2473 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2474 });
2475 cx.notify();
2476 }
2477 }
2478
2479 fn build_columnar_selection(
2480 &mut self,
2481 display_map: &DisplayMapSnapshot,
2482 row: u32,
2483 columns: &Range<u32>,
2484 reversed: bool,
2485 ) -> Option<Selection<Point>> {
2486 let is_empty = columns.start == columns.end;
2487 let line_len = display_map.line_len(row);
2488 if columns.start < line_len || (is_empty && columns.start == line_len) {
2489 let start = DisplayPoint::new(row, columns.start);
2490 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2491 Some(Selection {
2492 id: post_inc(&mut self.next_selection_id),
2493 start: start.to_point(display_map),
2494 end: end.to_point(display_map),
2495 reversed,
2496 goal: SelectionGoal::ColumnRange {
2497 start: columns.start,
2498 end: columns.end,
2499 },
2500 })
2501 } else {
2502 None
2503 }
2504 }
2505
2506 pub fn active_selection_sets<'a>(
2507 &'a self,
2508 cx: &'a AppContext,
2509 ) -> impl 'a + Iterator<Item = SelectionSetId> {
2510 let buffer = self.buffer.read(cx);
2511 let replica_id = buffer.replica_id();
2512 buffer
2513 .selection_sets()
2514 .filter(move |(set_id, set)| {
2515 set.active && (set_id.replica_id != replica_id || **set_id == self.selection_set_id)
2516 })
2517 .map(|(set_id, _)| *set_id)
2518 }
2519
2520 pub fn selections_in_range<'a>(
2521 &'a self,
2522 set_id: SelectionSetId,
2523 range: Range<DisplayPoint>,
2524 cx: &'a mut MutableAppContext,
2525 ) -> impl 'a + Iterator<Item = Range<DisplayPoint>> {
2526 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2527 let buffer = self.buffer.read(cx);
2528 let selections = self
2529 .buffer
2530 .read(cx)
2531 .selection_set(set_id)
2532 .unwrap()
2533 .selections::<Point, _>(buffer)
2534 .collect::<Vec<_>>();
2535 let start = range.start.to_point(&display_map);
2536 let start_index = self.selection_insertion_index(&selections, start);
2537 let pending_selection = if set_id == self.selection_set_id {
2538 self.pending_selection.as_ref().and_then(|pending| {
2539 let mut selection_start = pending.selection.start.to_display_point(&display_map);
2540 let mut selection_end = pending.selection.end.to_display_point(&display_map);
2541 if pending.selection.reversed {
2542 mem::swap(&mut selection_start, &mut selection_end);
2543 }
2544 if selection_start <= range.end || selection_end <= range.end {
2545 Some(selection_start..selection_end)
2546 } else {
2547 None
2548 }
2549 })
2550 } else {
2551 None
2552 };
2553 selections
2554 .into_iter()
2555 .skip(start_index)
2556 .map(move |s| s.display_range(&display_map))
2557 .take_while(move |r| r.start <= range.end || r.end <= range.end)
2558 .chain(pending_selection)
2559 }
2560
2561 fn selection_insertion_index(&self, selections: &[Selection<Point>], start: Point) -> usize {
2562 match selections.binary_search_by_key(&start, |probe| probe.start) {
2563 Ok(index) => index,
2564 Err(index) => {
2565 if index > 0 && selections[index - 1].end > start {
2566 index - 1
2567 } else {
2568 index
2569 }
2570 }
2571 }
2572 }
2573
2574 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> impl 'a + Iterator<Item = Selection<D>>
2575 where
2576 D: 'a + TextDimension<'a> + Ord,
2577 {
2578 let buffer = self.buffer.read(cx);
2579 let mut selections = self.selection_set(cx).selections::<D, _>(buffer).peekable();
2580 let mut pending_selection = self.pending_selection(cx);
2581 iter::from_fn(move || {
2582 if let Some(pending) = pending_selection.as_mut() {
2583 while let Some(next_selection) = selections.peek() {
2584 if pending.start <= next_selection.end && pending.end >= next_selection.start {
2585 let next_selection = selections.next().unwrap();
2586 if next_selection.start < pending.start {
2587 pending.start = next_selection.start;
2588 }
2589 if next_selection.end > pending.end {
2590 pending.end = next_selection.end;
2591 }
2592 } else if next_selection.end < pending.start {
2593 return selections.next();
2594 } else {
2595 break;
2596 }
2597 }
2598
2599 pending_selection.take()
2600 } else {
2601 selections.next()
2602 }
2603 })
2604 }
2605
2606 fn pending_selection<'a, D>(&self, cx: &'a AppContext) -> Option<Selection<D>>
2607 where
2608 D: 'a + TextDimension<'a>,
2609 {
2610 let buffer = self.buffer.read(cx);
2611 self.pending_selection.as_ref().map(|pending| Selection {
2612 id: pending.selection.id,
2613 start: pending.selection.start.summary::<D, _>(buffer),
2614 end: pending.selection.end.summary::<D, _>(buffer),
2615 reversed: pending.selection.reversed,
2616 goal: pending.selection.goal,
2617 })
2618 }
2619
2620 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
2621 let mut selection_count = self.selection_set(cx).len();
2622 if self.pending_selection.is_some() {
2623 selection_count += 1;
2624 }
2625 selection_count
2626 }
2627
2628 pub fn oldest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2629 where
2630 T: 'a + TextDimension<'a>,
2631 {
2632 let buffer = self.buffer.read(cx);
2633 self.selection_set(cx)
2634 .oldest_selection(buffer)
2635 .or_else(|| self.pending_selection(cx))
2636 .unwrap()
2637 }
2638
2639 pub fn newest_selection<'a, T>(&self, cx: &'a AppContext) -> Selection<T>
2640 where
2641 T: 'a + TextDimension<'a>,
2642 {
2643 let buffer = self.buffer.read(cx);
2644 self.pending_selection(cx)
2645 .or_else(|| self.selection_set(cx).newest_selection(buffer))
2646 .unwrap()
2647 }
2648
2649 fn selection_set<'a>(&self, cx: &'a AppContext) -> &'a SelectionSet {
2650 self.buffer
2651 .read(cx)
2652 .selection_set(self.selection_set_id)
2653 .unwrap()
2654 }
2655
2656 fn update_selections<T>(
2657 &mut self,
2658 mut selections: Vec<Selection<T>>,
2659 autoscroll: bool,
2660 cx: &mut ViewContext<Self>,
2661 ) where
2662 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
2663 {
2664 // Merge overlapping selections.
2665 let buffer = self.buffer.read(cx);
2666 let mut i = 1;
2667 while i < selections.len() {
2668 if selections[i - 1].end >= selections[i].start {
2669 let removed = selections.remove(i);
2670 if removed.start < selections[i - 1].start {
2671 selections[i - 1].start = removed.start;
2672 }
2673 if removed.end > selections[i - 1].end {
2674 selections[i - 1].end = removed.end;
2675 }
2676 } else {
2677 i += 1;
2678 }
2679 }
2680
2681 self.pending_selection = None;
2682 self.add_selections_state = None;
2683 self.select_larger_syntax_node_stack.clear();
2684 while let Some(autoclose_pair_state) = self.autoclose_stack.last() {
2685 let all_selections_inside_autoclose_ranges =
2686 if selections.len() == autoclose_pair_state.ranges.len() {
2687 selections
2688 .iter()
2689 .zip(autoclose_pair_state.ranges.ranges::<Point, _>(buffer))
2690 .all(|(selection, autoclose_range)| {
2691 let head = selection.head().to_point(&*buffer);
2692 autoclose_range.start <= head && autoclose_range.end >= head
2693 })
2694 } else {
2695 false
2696 };
2697
2698 if all_selections_inside_autoclose_ranges {
2699 break;
2700 } else {
2701 self.autoclose_stack.pop();
2702 }
2703 }
2704
2705 if autoscroll {
2706 self.request_autoscroll(cx);
2707 }
2708 self.pause_cursor_blinking(cx);
2709
2710 self.buffer.update(cx, |buffer, cx| {
2711 buffer
2712 .update_selection_set(self.selection_set_id, &selections, cx)
2713 .unwrap();
2714 });
2715 }
2716
2717 fn request_autoscroll(&mut self, cx: &mut ViewContext<Self>) {
2718 self.autoscroll_requested = true;
2719 cx.notify();
2720 }
2721
2722 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
2723 self.end_selection(cx);
2724 self.buffer.update(cx, |buffer, _| {
2725 buffer
2726 .start_transaction(Some(self.selection_set_id))
2727 .unwrap()
2728 });
2729 }
2730
2731 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
2732 self.buffer.update(cx, |buffer, cx| {
2733 buffer
2734 .end_transaction(Some(self.selection_set_id), cx)
2735 .unwrap()
2736 });
2737 }
2738
2739 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
2740 log::info!("Editor::page_up");
2741 }
2742
2743 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
2744 log::info!("Editor::page_down");
2745 }
2746
2747 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
2748 let mut fold_ranges = Vec::new();
2749
2750 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2751 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2752 for selection in selections {
2753 let range = selection.display_range(&display_map).sorted();
2754 let buffer_start_row = range.start.to_point(&display_map).row;
2755
2756 for row in (0..=range.end.row()).rev() {
2757 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
2758 let fold_range = self.foldable_range_for_line(&display_map, row);
2759 if fold_range.end.row >= buffer_start_row {
2760 fold_ranges.push(fold_range);
2761 if row <= range.start.row() {
2762 break;
2763 }
2764 }
2765 }
2766 }
2767 }
2768
2769 self.fold_ranges(fold_ranges, cx);
2770 }
2771
2772 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
2773 let selections = self.selections::<Point>(cx).collect::<Vec<_>>();
2774 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2775 let buffer = self.buffer.read(cx);
2776 let ranges = selections
2777 .iter()
2778 .map(|s| {
2779 let range = s.display_range(&display_map).sorted();
2780 let mut start = range.start.to_point(&display_map);
2781 let mut end = range.end.to_point(&display_map);
2782 start.column = 0;
2783 end.column = buffer.line_len(end.row);
2784 start..end
2785 })
2786 .collect::<Vec<_>>();
2787 self.unfold_ranges(ranges, cx);
2788 }
2789
2790 fn is_line_foldable(&self, display_map: &DisplayMapSnapshot, display_row: u32) -> bool {
2791 let max_point = display_map.max_point();
2792 if display_row >= max_point.row() {
2793 false
2794 } else {
2795 let (start_indent, is_blank) = display_map.line_indent(display_row);
2796 if is_blank {
2797 false
2798 } else {
2799 for display_row in display_row + 1..=max_point.row() {
2800 let (indent, is_blank) = display_map.line_indent(display_row);
2801 if !is_blank {
2802 return indent > start_indent;
2803 }
2804 }
2805 false
2806 }
2807 }
2808 }
2809
2810 fn foldable_range_for_line(
2811 &self,
2812 display_map: &DisplayMapSnapshot,
2813 start_row: u32,
2814 ) -> Range<Point> {
2815 let max_point = display_map.max_point();
2816
2817 let (start_indent, _) = display_map.line_indent(start_row);
2818 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
2819 let mut end = None;
2820 for row in start_row + 1..=max_point.row() {
2821 let (indent, is_blank) = display_map.line_indent(row);
2822 if !is_blank && indent <= start_indent {
2823 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
2824 break;
2825 }
2826 }
2827
2828 let end = end.unwrap_or(max_point);
2829 return start.to_point(display_map)..end.to_point(display_map);
2830 }
2831
2832 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
2833 let selections = self.selections::<Point>(cx);
2834 let ranges = selections.map(|s| s.start..s.end).collect();
2835 self.fold_ranges(ranges, cx);
2836 }
2837
2838 fn fold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2839 if !ranges.is_empty() {
2840 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
2841 self.autoscroll_requested = true;
2842 cx.notify();
2843 }
2844 }
2845
2846 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
2847 if !ranges.is_empty() {
2848 self.display_map
2849 .update(cx, |map, cx| map.unfold(ranges, cx));
2850 self.autoscroll_requested = true;
2851 cx.notify();
2852 }
2853 }
2854
2855 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
2856 self.display_map
2857 .update(cx, |map, cx| map.snapshot(cx))
2858 .longest_row()
2859 }
2860
2861 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
2862 self.display_map
2863 .update(cx, |map, cx| map.snapshot(cx))
2864 .max_point()
2865 }
2866
2867 pub fn text(&self, cx: &AppContext) -> String {
2868 self.buffer.read(cx).text()
2869 }
2870
2871 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
2872 self.display_map
2873 .update(cx, |map, cx| map.snapshot(cx))
2874 .text()
2875 }
2876
2877 // pub fn font_size(&self) -> f32 {
2878 // self.settings.font_size
2879 // }
2880
2881 pub fn set_wrap_width(&self, width: f32, cx: &mut MutableAppContext) -> bool {
2882 self.display_map
2883 .update(cx, |map, cx| map.set_wrap_width(Some(width), cx))
2884 }
2885
2886 fn next_blink_epoch(&mut self) -> usize {
2887 self.blink_epoch += 1;
2888 self.blink_epoch
2889 }
2890
2891 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
2892 self.show_local_cursors = true;
2893 cx.notify();
2894
2895 let epoch = self.next_blink_epoch();
2896 cx.spawn(|this, mut cx| {
2897 let this = this.downgrade();
2898 async move {
2899 Timer::after(CURSOR_BLINK_INTERVAL).await;
2900 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2901 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
2902 }
2903 }
2904 })
2905 .detach();
2906 }
2907
2908 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2909 if epoch == self.blink_epoch {
2910 self.blinking_paused = false;
2911 self.blink_cursors(epoch, cx);
2912 }
2913 }
2914
2915 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
2916 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
2917 self.show_local_cursors = !self.show_local_cursors;
2918 cx.notify();
2919
2920 let epoch = self.next_blink_epoch();
2921 cx.spawn(|this, mut cx| {
2922 let this = this.downgrade();
2923 async move {
2924 Timer::after(CURSOR_BLINK_INTERVAL).await;
2925 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
2926 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
2927 }
2928 }
2929 })
2930 .detach();
2931 }
2932 }
2933
2934 pub fn show_local_cursors(&self) -> bool {
2935 self.show_local_cursors
2936 }
2937
2938 fn on_buffer_changed(&mut self, _: ModelHandle<Buffer>, cx: &mut ViewContext<Self>) {
2939 self.refresh_active_diagnostics(cx);
2940 cx.notify();
2941 }
2942
2943 fn on_buffer_event(
2944 &mut self,
2945 _: ModelHandle<Buffer>,
2946 event: &language::Event,
2947 cx: &mut ViewContext<Self>,
2948 ) {
2949 match event {
2950 language::Event::Edited => cx.emit(Event::Edited),
2951 language::Event::Dirtied => cx.emit(Event::Dirtied),
2952 language::Event::Saved => cx.emit(Event::Saved),
2953 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
2954 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
2955 language::Event::Closed => cx.emit(Event::Closed),
2956 language::Event::Reparsed => {}
2957 }
2958 }
2959
2960 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
2961 cx.notify();
2962 }
2963}
2964
2965impl Snapshot {
2966 pub fn is_empty(&self) -> bool {
2967 self.display_snapshot.is_empty()
2968 }
2969
2970 pub fn is_focused(&self) -> bool {
2971 self.is_focused
2972 }
2973
2974 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
2975 self.placeholder_text.as_ref()
2976 }
2977
2978 pub fn buffer_row_count(&self) -> u32 {
2979 self.display_snapshot.buffer_row_count()
2980 }
2981
2982 pub fn buffer_rows<'a>(&'a self, start_row: u32, cx: &'a AppContext) -> BufferRows<'a> {
2983 self.display_snapshot.buffer_rows(start_row, Some(cx))
2984 }
2985
2986 pub fn chunks<'a>(
2987 &'a self,
2988 display_rows: Range<u32>,
2989 theme: Option<&'a SyntaxTheme>,
2990 cx: &'a AppContext,
2991 ) -> display_map::Chunks<'a> {
2992 self.display_snapshot.chunks(display_rows, theme, cx)
2993 }
2994
2995 pub fn scroll_position(&self) -> Vector2F {
2996 compute_scroll_position(
2997 &self.display_snapshot,
2998 self.scroll_position,
2999 &self.scroll_top_anchor,
3000 )
3001 }
3002
3003 pub fn max_point(&self) -> DisplayPoint {
3004 self.display_snapshot.max_point()
3005 }
3006
3007 pub fn longest_row(&self) -> u32 {
3008 self.display_snapshot.longest_row()
3009 }
3010
3011 pub fn line_len(&self, display_row: u32) -> u32 {
3012 self.display_snapshot.line_len(display_row)
3013 }
3014
3015 pub fn line(&self, display_row: u32) -> String {
3016 self.display_snapshot.line(display_row)
3017 }
3018
3019 pub fn prev_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
3020 self.display_snapshot.prev_row_boundary(point)
3021 }
3022
3023 pub fn next_row_boundary(&self, point: DisplayPoint) -> (DisplayPoint, Point) {
3024 self.display_snapshot.next_row_boundary(point)
3025 }
3026}
3027
3028impl EditorSettings {
3029 #[cfg(any(test, feature = "test-support"))]
3030 pub fn test(cx: &AppContext) -> Self {
3031 Self {
3032 tab_size: 4,
3033 style: {
3034 let font_cache: &gpui::FontCache = cx.font_cache();
3035 let font_family_name = Arc::from("Monaco");
3036 let font_properties = Default::default();
3037 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3038 let font_id = font_cache
3039 .select_font(font_family_id, &font_properties)
3040 .unwrap();
3041 EditorStyle {
3042 text: gpui::fonts::TextStyle {
3043 font_family_name,
3044 font_family_id,
3045 font_id,
3046 font_size: 14.,
3047 color: gpui::color::Color::from_u32(0xff0000ff),
3048 font_properties,
3049 underline: None,
3050 },
3051 placeholder_text: None,
3052 background: Default::default(),
3053 gutter_background: Default::default(),
3054 active_line_background: Default::default(),
3055 line_number: Default::default(),
3056 line_number_active: Default::default(),
3057 selection: Default::default(),
3058 guest_selections: Default::default(),
3059 syntax: Default::default(),
3060 error_diagnostic: Default::default(),
3061 invalid_error_diagnostic: Default::default(),
3062 warning_diagnostic: Default::default(),
3063 invalid_warning_diagnostic: Default::default(),
3064 information_diagnostic: Default::default(),
3065 invalid_information_diagnostic: Default::default(),
3066 hint_diagnostic: Default::default(),
3067 invalid_hint_diagnostic: Default::default(),
3068 }
3069 },
3070 }
3071 }
3072}
3073
3074fn compute_scroll_position(
3075 snapshot: &DisplayMapSnapshot,
3076 mut scroll_position: Vector2F,
3077 scroll_top_anchor: &Anchor,
3078) -> Vector2F {
3079 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3080 scroll_position.set_y(scroll_top + scroll_position.y());
3081 scroll_position
3082}
3083
3084pub enum Event {
3085 Activate,
3086 Edited,
3087 Blurred,
3088 Dirtied,
3089 Saved,
3090 FileHandleChanged,
3091 Closed,
3092}
3093
3094impl Entity for Editor {
3095 type Event = Event;
3096
3097 fn release(&mut self, cx: &mut MutableAppContext) {
3098 self.buffer.update(cx, |buffer, cx| {
3099 buffer
3100 .remove_selection_set(self.selection_set_id, cx)
3101 .unwrap();
3102 });
3103 }
3104}
3105
3106impl View for Editor {
3107 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3108 let settings = self.build_settings.borrow_mut()(cx);
3109 self.display_map.update(cx, |map, cx| {
3110 map.set_font(
3111 settings.style.text.font_id,
3112 settings.style.text.font_size,
3113 cx,
3114 )
3115 });
3116 EditorElement::new(self.handle.clone(), settings).boxed()
3117 }
3118
3119 fn ui_name() -> &'static str {
3120 "Editor"
3121 }
3122
3123 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3124 self.focused = true;
3125 self.blink_cursors(self.blink_epoch, cx);
3126 self.buffer.update(cx, |buffer, cx| {
3127 buffer
3128 .set_active_selection_set(Some(self.selection_set_id), cx)
3129 .unwrap();
3130 });
3131 }
3132
3133 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3134 self.focused = false;
3135 self.show_local_cursors = false;
3136 self.buffer.update(cx, |buffer, cx| {
3137 buffer.set_active_selection_set(None, cx).unwrap();
3138 });
3139 cx.emit(Event::Blurred);
3140 cx.notify();
3141 }
3142
3143 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3144 let mut cx = Self::default_keymap_context();
3145 let mode = match self.mode {
3146 EditorMode::SingleLine => "single_line",
3147 EditorMode::AutoHeight { .. } => "auto_height",
3148 EditorMode::Full => "full",
3149 };
3150 cx.map.insert("mode".into(), mode.into());
3151 cx
3152 }
3153}
3154
3155impl SelectionExt for Selection<Point> {
3156 fn display_range(&self, map: &DisplayMapSnapshot) -> Range<DisplayPoint> {
3157 let start = self.start.to_display_point(map);
3158 let end = self.end.to_display_point(map);
3159 if self.reversed {
3160 end..start
3161 } else {
3162 start..end
3163 }
3164 }
3165
3166 fn spanned_rows(
3167 &self,
3168 include_end_if_at_line_start: bool,
3169 map: &DisplayMapSnapshot,
3170 ) -> SpannedRows {
3171 let display_start = self.start.to_display_point(map);
3172 let mut display_end = self.end.to_display_point(map);
3173 if !include_end_if_at_line_start
3174 && display_end.row() != map.max_point().row()
3175 && display_start.row() != display_end.row()
3176 && display_end.column() == 0
3177 {
3178 *display_end.row_mut() -= 1;
3179 }
3180
3181 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3182 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3183
3184 SpannedRows {
3185 buffer_rows: buffer_start.row..buffer_end.row + 1,
3186 display_rows: display_start.row()..display_end.row() + 1,
3187 }
3188 }
3189}
3190
3191pub fn diagnostic_style(
3192 severity: DiagnosticSeverity,
3193 valid: bool,
3194 style: &EditorStyle,
3195) -> DiagnosticStyle {
3196 match (severity, valid) {
3197 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3198 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3199 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3200 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3201 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3202 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3203 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3204 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3205 _ => Default::default(),
3206 }
3207}
3208
3209#[cfg(test)]
3210mod tests {
3211 use super::*;
3212 use crate::test::sample_text;
3213 use buffer::Point;
3214 use unindent::Unindent;
3215
3216 #[gpui::test]
3217 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3218 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3219 let settings = EditorSettings::test(cx);
3220 let (_, editor) =
3221 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3222
3223 editor.update(cx, |view, cx| {
3224 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3225 });
3226
3227 assert_eq!(
3228 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3229 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3230 );
3231
3232 editor.update(cx, |view, cx| {
3233 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3234 });
3235
3236 assert_eq!(
3237 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3238 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3239 );
3240
3241 editor.update(cx, |view, cx| {
3242 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3243 });
3244
3245 assert_eq!(
3246 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3247 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3248 );
3249
3250 editor.update(cx, |view, cx| {
3251 view.end_selection(cx);
3252 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3253 });
3254
3255 assert_eq!(
3256 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3257 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3258 );
3259
3260 editor.update(cx, |view, cx| {
3261 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3262 view.update_selection(DisplayPoint::new(0, 0), Vector2F::zero(), cx);
3263 });
3264
3265 assert_eq!(
3266 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3267 [
3268 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3269 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3270 ]
3271 );
3272
3273 editor.update(cx, |view, cx| {
3274 view.end_selection(cx);
3275 });
3276
3277 assert_eq!(
3278 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3279 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3280 );
3281 }
3282
3283 #[gpui::test]
3284 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3285 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3286 let settings = EditorSettings::test(cx);
3287 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3288
3289 view.update(cx, |view, cx| {
3290 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3291 assert_eq!(
3292 view.selection_ranges(cx),
3293 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3294 );
3295 });
3296
3297 view.update(cx, |view, cx| {
3298 view.update_selection(DisplayPoint::new(3, 3), Vector2F::zero(), cx);
3299 assert_eq!(
3300 view.selection_ranges(cx),
3301 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3302 );
3303 });
3304
3305 view.update(cx, |view, cx| {
3306 view.cancel(&Cancel, cx);
3307 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3308 assert_eq!(
3309 view.selection_ranges(cx),
3310 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3311 );
3312 });
3313 }
3314
3315 #[gpui::test]
3316 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3317 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx));
3318 let settings = EditorSettings::test(cx);
3319 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3320
3321 view.update(cx, |view, cx| {
3322 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3323 view.update_selection(DisplayPoint::new(1, 1), Vector2F::zero(), cx);
3324 view.end_selection(cx);
3325
3326 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3327 view.update_selection(DisplayPoint::new(0, 3), Vector2F::zero(), cx);
3328 view.end_selection(cx);
3329 assert_eq!(
3330 view.selection_ranges(cx),
3331 [
3332 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3333 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3334 ]
3335 );
3336 });
3337
3338 view.update(cx, |view, cx| {
3339 view.cancel(&Cancel, cx);
3340 assert_eq!(
3341 view.selection_ranges(cx),
3342 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3343 );
3344 });
3345
3346 view.update(cx, |view, cx| {
3347 view.cancel(&Cancel, cx);
3348 assert_eq!(
3349 view.selection_ranges(cx),
3350 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3351 );
3352 });
3353 }
3354
3355 #[gpui::test]
3356 fn test_fold(cx: &mut gpui::MutableAppContext) {
3357 let buffer = cx.add_model(|cx| {
3358 Buffer::new(
3359 0,
3360 "
3361 impl Foo {
3362 // Hello!
3363
3364 fn a() {
3365 1
3366 }
3367
3368 fn b() {
3369 2
3370 }
3371
3372 fn c() {
3373 3
3374 }
3375 }
3376 "
3377 .unindent(),
3378 cx,
3379 )
3380 });
3381 let settings = EditorSettings::test(&cx);
3382 let (_, view) = cx.add_window(Default::default(), |cx| {
3383 build_editor(buffer.clone(), settings, cx)
3384 });
3385
3386 view.update(cx, |view, cx| {
3387 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3388 .unwrap();
3389 view.fold(&Fold, cx);
3390 assert_eq!(
3391 view.display_text(cx),
3392 "
3393 impl Foo {
3394 // Hello!
3395
3396 fn a() {
3397 1
3398 }
3399
3400 fn b() {…
3401 }
3402
3403 fn c() {…
3404 }
3405 }
3406 "
3407 .unindent(),
3408 );
3409
3410 view.fold(&Fold, cx);
3411 assert_eq!(
3412 view.display_text(cx),
3413 "
3414 impl Foo {…
3415 }
3416 "
3417 .unindent(),
3418 );
3419
3420 view.unfold(&Unfold, cx);
3421 assert_eq!(
3422 view.display_text(cx),
3423 "
3424 impl Foo {
3425 // Hello!
3426
3427 fn a() {
3428 1
3429 }
3430
3431 fn b() {…
3432 }
3433
3434 fn c() {…
3435 }
3436 }
3437 "
3438 .unindent(),
3439 );
3440
3441 view.unfold(&Unfold, cx);
3442 assert_eq!(view.display_text(cx), buffer.read(cx).text());
3443 });
3444 }
3445
3446 #[gpui::test]
3447 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3448 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 6), cx));
3449 let settings = EditorSettings::test(&cx);
3450 let (_, view) = cx.add_window(Default::default(), |cx| {
3451 build_editor(buffer.clone(), settings, cx)
3452 });
3453
3454 buffer.update(cx, |buffer, cx| {
3455 buffer.edit(
3456 vec![
3457 Point::new(1, 0)..Point::new(1, 0),
3458 Point::new(1, 1)..Point::new(1, 1),
3459 ],
3460 "\t",
3461 cx,
3462 );
3463 });
3464
3465 view.update(cx, |view, cx| {
3466 assert_eq!(
3467 view.selection_ranges(cx),
3468 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3469 );
3470
3471 view.move_down(&MoveDown, cx);
3472 assert_eq!(
3473 view.selection_ranges(cx),
3474 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3475 );
3476
3477 view.move_right(&MoveRight, cx);
3478 assert_eq!(
3479 view.selection_ranges(cx),
3480 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3481 );
3482
3483 view.move_left(&MoveLeft, cx);
3484 assert_eq!(
3485 view.selection_ranges(cx),
3486 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3487 );
3488
3489 view.move_up(&MoveUp, cx);
3490 assert_eq!(
3491 view.selection_ranges(cx),
3492 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3493 );
3494
3495 view.move_to_end(&MoveToEnd, cx);
3496 assert_eq!(
3497 view.selection_ranges(cx),
3498 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3499 );
3500
3501 view.move_to_beginning(&MoveToBeginning, cx);
3502 assert_eq!(
3503 view.selection_ranges(cx),
3504 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3505 );
3506
3507 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3508 .unwrap();
3509 view.select_to_beginning(&SelectToBeginning, cx);
3510 assert_eq!(
3511 view.selection_ranges(cx),
3512 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
3513 );
3514
3515 view.select_to_end(&SelectToEnd, cx);
3516 assert_eq!(
3517 view.selection_ranges(cx),
3518 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
3519 );
3520 });
3521 }
3522
3523 #[gpui::test]
3524 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
3525 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx));
3526 let settings = EditorSettings::test(&cx);
3527 let (_, view) = cx.add_window(Default::default(), |cx| {
3528 build_editor(buffer.clone(), settings, cx)
3529 });
3530
3531 assert_eq!('ⓐ'.len_utf8(), 3);
3532 assert_eq!('α'.len_utf8(), 2);
3533
3534 view.update(cx, |view, cx| {
3535 view.fold_ranges(
3536 vec![
3537 Point::new(0, 6)..Point::new(0, 12),
3538 Point::new(1, 2)..Point::new(1, 4),
3539 Point::new(2, 4)..Point::new(2, 8),
3540 ],
3541 cx,
3542 );
3543 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
3544
3545 view.move_right(&MoveRight, cx);
3546 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3547 view.move_right(&MoveRight, cx);
3548 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3549 view.move_right(&MoveRight, cx);
3550 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3551
3552 view.move_down(&MoveDown, cx);
3553 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
3554 view.move_left(&MoveLeft, cx);
3555 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
3556 view.move_left(&MoveLeft, cx);
3557 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
3558
3559 view.move_down(&MoveDown, cx);
3560 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
3561 view.move_right(&MoveRight, cx);
3562 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
3563 view.move_right(&MoveRight, cx);
3564 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
3565 view.move_right(&MoveRight, cx);
3566 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
3567
3568 view.move_up(&MoveUp, cx);
3569 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
3570 view.move_up(&MoveUp, cx);
3571 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
3572 view.move_left(&MoveLeft, cx);
3573 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
3574 view.move_left(&MoveLeft, cx);
3575 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
3576 view.move_left(&MoveLeft, cx);
3577 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
3578 });
3579 }
3580
3581 #[gpui::test]
3582 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
3583 let buffer = cx.add_model(|cx| Buffer::new(0, "ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx));
3584 let settings = EditorSettings::test(&cx);
3585 let (_, view) = cx.add_window(Default::default(), |cx| {
3586 build_editor(buffer.clone(), settings, cx)
3587 });
3588 view.update(cx, |view, cx| {
3589 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
3590 .unwrap();
3591
3592 view.move_down(&MoveDown, cx);
3593 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
3594
3595 view.move_down(&MoveDown, cx);
3596 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3597
3598 view.move_down(&MoveDown, cx);
3599 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3600
3601 view.move_down(&MoveDown, cx);
3602 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
3603
3604 view.move_up(&MoveUp, cx);
3605 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
3606
3607 view.move_up(&MoveUp, cx);
3608 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
3609 });
3610 }
3611
3612 #[gpui::test]
3613 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
3614 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\n def", cx));
3615 let settings = EditorSettings::test(&cx);
3616 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3617 view.update(cx, |view, cx| {
3618 view.select_display_ranges(
3619 &[
3620 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
3621 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3622 ],
3623 cx,
3624 )
3625 .unwrap();
3626 });
3627
3628 view.update(cx, |view, cx| {
3629 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3630 assert_eq!(
3631 view.selection_ranges(cx),
3632 &[
3633 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3634 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3635 ]
3636 );
3637 });
3638
3639 view.update(cx, |view, cx| {
3640 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3641 assert_eq!(
3642 view.selection_ranges(cx),
3643 &[
3644 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3645 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3646 ]
3647 );
3648 });
3649
3650 view.update(cx, |view, cx| {
3651 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
3652 assert_eq!(
3653 view.selection_ranges(cx),
3654 &[
3655 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3656 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
3657 ]
3658 );
3659 });
3660
3661 view.update(cx, |view, cx| {
3662 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3663 assert_eq!(
3664 view.selection_ranges(cx),
3665 &[
3666 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3667 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3668 ]
3669 );
3670 });
3671
3672 // Moving to the end of line again is a no-op.
3673 view.update(cx, |view, cx| {
3674 view.move_to_end_of_line(&MoveToEndOfLine, cx);
3675 assert_eq!(
3676 view.selection_ranges(cx),
3677 &[
3678 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3679 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
3680 ]
3681 );
3682 });
3683
3684 view.update(cx, |view, cx| {
3685 view.move_left(&MoveLeft, cx);
3686 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3687 assert_eq!(
3688 view.selection_ranges(cx),
3689 &[
3690 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3691 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3692 ]
3693 );
3694 });
3695
3696 view.update(cx, |view, cx| {
3697 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3698 assert_eq!(
3699 view.selection_ranges(cx),
3700 &[
3701 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3702 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
3703 ]
3704 );
3705 });
3706
3707 view.update(cx, |view, cx| {
3708 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
3709 assert_eq!(
3710 view.selection_ranges(cx),
3711 &[
3712 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
3713 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
3714 ]
3715 );
3716 });
3717
3718 view.update(cx, |view, cx| {
3719 view.select_to_end_of_line(&SelectToEndOfLine, cx);
3720 assert_eq!(
3721 view.selection_ranges(cx),
3722 &[
3723 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
3724 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
3725 ]
3726 );
3727 });
3728
3729 view.update(cx, |view, cx| {
3730 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
3731 assert_eq!(view.display_text(cx), "ab\n de");
3732 assert_eq!(
3733 view.selection_ranges(cx),
3734 &[
3735 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3736 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
3737 ]
3738 );
3739 });
3740
3741 view.update(cx, |view, cx| {
3742 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
3743 assert_eq!(view.display_text(cx), "\n");
3744 assert_eq!(
3745 view.selection_ranges(cx),
3746 &[
3747 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3748 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3749 ]
3750 );
3751 });
3752 }
3753
3754 #[gpui::test]
3755 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
3756 let buffer =
3757 cx.add_model(|cx| Buffer::new(0, "use std::str::{foo, bar}\n\n {baz.qux()}", cx));
3758 let settings = EditorSettings::test(&cx);
3759 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3760 view.update(cx, |view, cx| {
3761 view.select_display_ranges(
3762 &[
3763 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
3764 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
3765 ],
3766 cx,
3767 )
3768 .unwrap();
3769 });
3770
3771 view.update(cx, |view, cx| {
3772 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3773 assert_eq!(
3774 view.selection_ranges(cx),
3775 &[
3776 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3777 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3778 ]
3779 );
3780 });
3781
3782 view.update(cx, |view, cx| {
3783 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3784 assert_eq!(
3785 view.selection_ranges(cx),
3786 &[
3787 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3788 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
3789 ]
3790 );
3791 });
3792
3793 view.update(cx, |view, cx| {
3794 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3795 assert_eq!(
3796 view.selection_ranges(cx),
3797 &[
3798 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
3799 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
3800 ]
3801 );
3802 });
3803
3804 view.update(cx, |view, cx| {
3805 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3806 assert_eq!(
3807 view.selection_ranges(cx),
3808 &[
3809 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3810 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3811 ]
3812 );
3813 });
3814
3815 view.update(cx, |view, cx| {
3816 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3817 assert_eq!(
3818 view.selection_ranges(cx),
3819 &[
3820 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
3821 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
3822 ]
3823 );
3824 });
3825
3826 view.update(cx, |view, cx| {
3827 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3828 assert_eq!(
3829 view.selection_ranges(cx),
3830 &[
3831 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3832 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
3833 ]
3834 );
3835 });
3836
3837 view.update(cx, |view, cx| {
3838 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3839 assert_eq!(
3840 view.selection_ranges(cx),
3841 &[
3842 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
3843 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
3844 ]
3845 );
3846 });
3847
3848 view.update(cx, |view, cx| {
3849 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3850 assert_eq!(
3851 view.selection_ranges(cx),
3852 &[
3853 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
3854 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
3855 ]
3856 );
3857 });
3858
3859 view.update(cx, |view, cx| {
3860 view.move_right(&MoveRight, cx);
3861 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3862 assert_eq!(
3863 view.selection_ranges(cx),
3864 &[
3865 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3866 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3867 ]
3868 );
3869 });
3870
3871 view.update(cx, |view, cx| {
3872 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
3873 assert_eq!(
3874 view.selection_ranges(cx),
3875 &[
3876 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
3877 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
3878 ]
3879 );
3880 });
3881
3882 view.update(cx, |view, cx| {
3883 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
3884 assert_eq!(
3885 view.selection_ranges(cx),
3886 &[
3887 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
3888 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
3889 ]
3890 );
3891 });
3892 }
3893
3894 #[gpui::test]
3895 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
3896 let buffer =
3897 cx.add_model(|cx| Buffer::new(0, "use one::{\n two::three::four::five\n};", cx));
3898 let settings = EditorSettings::test(&cx);
3899 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3900
3901 view.update(cx, |view, cx| {
3902 view.set_wrap_width(140., cx);
3903 assert_eq!(
3904 view.display_text(cx),
3905 "use one::{\n two::three::\n four::five\n};"
3906 );
3907
3908 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
3909 .unwrap();
3910
3911 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3912 assert_eq!(
3913 view.selection_ranges(cx),
3914 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
3915 );
3916
3917 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3918 assert_eq!(
3919 view.selection_ranges(cx),
3920 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3921 );
3922
3923 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3924 assert_eq!(
3925 view.selection_ranges(cx),
3926 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3927 );
3928
3929 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
3930 assert_eq!(
3931 view.selection_ranges(cx),
3932 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
3933 );
3934
3935 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3936 assert_eq!(
3937 view.selection_ranges(cx),
3938 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
3939 );
3940
3941 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
3942 assert_eq!(
3943 view.selection_ranges(cx),
3944 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
3945 );
3946 });
3947 }
3948
3949 #[gpui::test]
3950 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
3951 let buffer = cx.add_model(|cx| Buffer::new(0, "one two three four", cx));
3952 let settings = EditorSettings::test(&cx);
3953 let (_, view) = cx.add_window(Default::default(), |cx| {
3954 build_editor(buffer.clone(), settings, cx)
3955 });
3956
3957 view.update(cx, |view, cx| {
3958 view.select_display_ranges(
3959 &[
3960 // an empty selection - the preceding word fragment is deleted
3961 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
3962 // characters selected - they are deleted
3963 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
3964 ],
3965 cx,
3966 )
3967 .unwrap();
3968 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
3969 });
3970
3971 assert_eq!(buffer.read(cx).text(), "e two te four");
3972
3973 view.update(cx, |view, cx| {
3974 view.select_display_ranges(
3975 &[
3976 // an empty selection - the following word fragment is deleted
3977 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
3978 // characters selected - they are deleted
3979 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
3980 ],
3981 cx,
3982 )
3983 .unwrap();
3984 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
3985 });
3986
3987 assert_eq!(buffer.read(cx).text(), "e t te our");
3988 }
3989
3990 #[gpui::test]
3991 fn test_newline(cx: &mut gpui::MutableAppContext) {
3992 let buffer = cx.add_model(|cx| Buffer::new(0, "aaaa\n bbbb\n", cx));
3993 let settings = EditorSettings::test(&cx);
3994 let (_, view) = cx.add_window(Default::default(), |cx| {
3995 build_editor(buffer.clone(), settings, cx)
3996 });
3997
3998 view.update(cx, |view, cx| {
3999 view.select_display_ranges(
4000 &[
4001 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4002 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4003 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4004 ],
4005 cx,
4006 )
4007 .unwrap();
4008
4009 view.newline(&Newline, cx);
4010 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4011 });
4012 }
4013
4014 #[gpui::test]
4015 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4016 let buffer = cx.add_model(|cx| {
4017 Buffer::new(
4018 0,
4019 "one two three\nfour five six\nseven eight nine\nten\n",
4020 cx,
4021 )
4022 });
4023 let settings = EditorSettings::test(&cx);
4024 let (_, view) = cx.add_window(Default::default(), |cx| {
4025 build_editor(buffer.clone(), settings, cx)
4026 });
4027
4028 view.update(cx, |view, cx| {
4029 view.select_display_ranges(
4030 &[
4031 // an empty selection - the preceding character is deleted
4032 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4033 // one character selected - it is deleted
4034 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4035 // a line suffix selected - it is deleted
4036 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4037 ],
4038 cx,
4039 )
4040 .unwrap();
4041 view.backspace(&Backspace, cx);
4042 });
4043
4044 assert_eq!(
4045 buffer.read(cx).text(),
4046 "oe two three\nfou five six\nseven ten\n"
4047 );
4048 }
4049
4050 #[gpui::test]
4051 fn test_delete(cx: &mut gpui::MutableAppContext) {
4052 let buffer = cx.add_model(|cx| {
4053 Buffer::new(
4054 0,
4055 "one two three\nfour five six\nseven eight nine\nten\n",
4056 cx,
4057 )
4058 });
4059 let settings = EditorSettings::test(&cx);
4060 let (_, view) = cx.add_window(Default::default(), |cx| {
4061 build_editor(buffer.clone(), settings, cx)
4062 });
4063
4064 view.update(cx, |view, cx| {
4065 view.select_display_ranges(
4066 &[
4067 // an empty selection - the following character is deleted
4068 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4069 // one character selected - it is deleted
4070 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4071 // a line suffix selected - it is deleted
4072 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4073 ],
4074 cx,
4075 )
4076 .unwrap();
4077 view.delete(&Delete, cx);
4078 });
4079
4080 assert_eq!(
4081 buffer.read(cx).text(),
4082 "on two three\nfou five six\nseven ten\n"
4083 );
4084 }
4085
4086 #[gpui::test]
4087 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4088 let settings = EditorSettings::test(&cx);
4089 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4090 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4091 view.update(cx, |view, cx| {
4092 view.select_display_ranges(
4093 &[
4094 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4095 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4096 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4097 ],
4098 cx,
4099 )
4100 .unwrap();
4101 view.delete_line(&DeleteLine, cx);
4102 assert_eq!(view.display_text(cx), "ghi");
4103 assert_eq!(
4104 view.selection_ranges(cx),
4105 vec![
4106 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4107 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4108 ]
4109 );
4110 });
4111
4112 let settings = EditorSettings::test(&cx);
4113 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4114 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4115 view.update(cx, |view, cx| {
4116 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4117 .unwrap();
4118 view.delete_line(&DeleteLine, cx);
4119 assert_eq!(view.display_text(cx), "ghi\n");
4120 assert_eq!(
4121 view.selection_ranges(cx),
4122 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4123 );
4124 });
4125 }
4126
4127 #[gpui::test]
4128 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4129 let settings = EditorSettings::test(&cx);
4130 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4131 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4132 view.update(cx, |view, cx| {
4133 view.select_display_ranges(
4134 &[
4135 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4136 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4137 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4138 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4139 ],
4140 cx,
4141 )
4142 .unwrap();
4143 view.duplicate_line(&DuplicateLine, cx);
4144 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4145 assert_eq!(
4146 view.selection_ranges(cx),
4147 vec![
4148 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4149 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4150 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4151 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4152 ]
4153 );
4154 });
4155
4156 let settings = EditorSettings::test(&cx);
4157 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndef\nghi\n", cx));
4158 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4159 view.update(cx, |view, cx| {
4160 view.select_display_ranges(
4161 &[
4162 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4163 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4164 ],
4165 cx,
4166 )
4167 .unwrap();
4168 view.duplicate_line(&DuplicateLine, cx);
4169 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4170 assert_eq!(
4171 view.selection_ranges(cx),
4172 vec![
4173 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4174 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4175 ]
4176 );
4177 });
4178 }
4179
4180 #[gpui::test]
4181 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4182 let settings = EditorSettings::test(&cx);
4183 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(10, 5), cx));
4184 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4185 view.update(cx, |view, cx| {
4186 view.fold_ranges(
4187 vec![
4188 Point::new(0, 2)..Point::new(1, 2),
4189 Point::new(2, 3)..Point::new(4, 1),
4190 Point::new(7, 0)..Point::new(8, 4),
4191 ],
4192 cx,
4193 );
4194 view.select_display_ranges(
4195 &[
4196 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4197 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4198 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4199 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4200 ],
4201 cx,
4202 )
4203 .unwrap();
4204 assert_eq!(
4205 view.display_text(cx),
4206 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4207 );
4208
4209 view.move_line_up(&MoveLineUp, cx);
4210 assert_eq!(
4211 view.display_text(cx),
4212 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4213 );
4214 assert_eq!(
4215 view.selection_ranges(cx),
4216 vec![
4217 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4218 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4219 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4220 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4221 ]
4222 );
4223 });
4224
4225 view.update(cx, |view, cx| {
4226 view.move_line_down(&MoveLineDown, cx);
4227 assert_eq!(
4228 view.display_text(cx),
4229 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4230 );
4231 assert_eq!(
4232 view.selection_ranges(cx),
4233 vec![
4234 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4235 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4236 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4237 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4238 ]
4239 );
4240 });
4241
4242 view.update(cx, |view, cx| {
4243 view.move_line_down(&MoveLineDown, cx);
4244 assert_eq!(
4245 view.display_text(cx),
4246 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4247 );
4248 assert_eq!(
4249 view.selection_ranges(cx),
4250 vec![
4251 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4252 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4253 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4254 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4255 ]
4256 );
4257 });
4258
4259 view.update(cx, |view, cx| {
4260 view.move_line_up(&MoveLineUp, cx);
4261 assert_eq!(
4262 view.display_text(cx),
4263 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4264 );
4265 assert_eq!(
4266 view.selection_ranges(cx),
4267 vec![
4268 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4269 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4270 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4271 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4272 ]
4273 );
4274 });
4275 }
4276
4277 #[gpui::test]
4278 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4279 let buffer = cx.add_model(|cx| Buffer::new(0, "one✅ two three four five six ", cx));
4280 let settings = EditorSettings::test(&cx);
4281 let view = cx
4282 .add_window(Default::default(), |cx| {
4283 build_editor(buffer.clone(), settings, cx)
4284 })
4285 .1;
4286
4287 // Cut with three selections. Clipboard text is divided into three slices.
4288 view.update(cx, |view, cx| {
4289 view.select_ranges(vec![0..7, 11..17, 22..27], false, cx);
4290 view.cut(&Cut, cx);
4291 assert_eq!(view.display_text(cx), "two four six ");
4292 });
4293
4294 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4295 view.update(cx, |view, cx| {
4296 view.select_ranges(vec![4..4, 9..9, 13..13], false, cx);
4297 view.paste(&Paste, cx);
4298 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4299 assert_eq!(
4300 view.selection_ranges(cx),
4301 &[
4302 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4303 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4304 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4305 ]
4306 );
4307 });
4308
4309 // Paste again but with only two cursors. Since the number of cursors doesn't
4310 // match the number of slices in the clipboard, the entire clipboard text
4311 // is pasted at each cursor.
4312 view.update(cx, |view, cx| {
4313 view.select_ranges(vec![0..0, 31..31], false, cx);
4314 view.handle_input(&Input("( ".into()), cx);
4315 view.paste(&Paste, cx);
4316 view.handle_input(&Input(") ".into()), cx);
4317 assert_eq!(
4318 view.display_text(cx),
4319 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4320 );
4321 });
4322
4323 view.update(cx, |view, cx| {
4324 view.select_ranges(vec![0..0], false, cx);
4325 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4326 assert_eq!(
4327 view.display_text(cx),
4328 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4329 );
4330 });
4331
4332 // Cut with three selections, one of which is full-line.
4333 view.update(cx, |view, cx| {
4334 view.select_display_ranges(
4335 &[
4336 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4337 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4338 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4339 ],
4340 cx,
4341 )
4342 .unwrap();
4343 view.cut(&Cut, cx);
4344 assert_eq!(
4345 view.display_text(cx),
4346 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4347 );
4348 });
4349
4350 // Paste with three selections, noticing how the copied selection that was full-line
4351 // gets inserted before the second cursor.
4352 view.update(cx, |view, cx| {
4353 view.select_display_ranges(
4354 &[
4355 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4356 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4357 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4358 ],
4359 cx,
4360 )
4361 .unwrap();
4362 view.paste(&Paste, cx);
4363 assert_eq!(
4364 view.display_text(cx),
4365 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4366 );
4367 assert_eq!(
4368 view.selection_ranges(cx),
4369 &[
4370 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4371 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4372 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4373 ]
4374 );
4375 });
4376
4377 // Copy with a single cursor only, which writes the whole line into the clipboard.
4378 view.update(cx, |view, cx| {
4379 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4380 .unwrap();
4381 view.copy(&Copy, cx);
4382 });
4383
4384 // Paste with three selections, noticing how the copied full-line selection is inserted
4385 // before the empty selections but replaces the selection that is non-empty.
4386 view.update(cx, |view, cx| {
4387 view.select_display_ranges(
4388 &[
4389 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4390 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4391 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4392 ],
4393 cx,
4394 )
4395 .unwrap();
4396 view.paste(&Paste, cx);
4397 assert_eq!(
4398 view.display_text(cx),
4399 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4400 );
4401 assert_eq!(
4402 view.selection_ranges(cx),
4403 &[
4404 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4405 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4406 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4407 ]
4408 );
4409 });
4410 }
4411
4412 #[gpui::test]
4413 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4414 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\nde\nfgh", cx));
4415 let settings = EditorSettings::test(&cx);
4416 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4417 view.update(cx, |view, cx| {
4418 view.select_all(&SelectAll, cx);
4419 assert_eq!(
4420 view.selection_ranges(cx),
4421 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4422 );
4423 });
4424 }
4425
4426 #[gpui::test]
4427 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4428 let settings = EditorSettings::test(&cx);
4429 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(6, 5), cx));
4430 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4431 view.update(cx, |view, cx| {
4432 view.select_display_ranges(
4433 &[
4434 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4435 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4436 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4437 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4438 ],
4439 cx,
4440 )
4441 .unwrap();
4442 view.select_line(&SelectLine, cx);
4443 assert_eq!(
4444 view.selection_ranges(cx),
4445 vec![
4446 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4447 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4448 ]
4449 );
4450 });
4451
4452 view.update(cx, |view, cx| {
4453 view.select_line(&SelectLine, cx);
4454 assert_eq!(
4455 view.selection_ranges(cx),
4456 vec![
4457 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4458 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4459 ]
4460 );
4461 });
4462
4463 view.update(cx, |view, cx| {
4464 view.select_line(&SelectLine, cx);
4465 assert_eq!(
4466 view.selection_ranges(cx),
4467 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
4468 );
4469 });
4470 }
4471
4472 #[gpui::test]
4473 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
4474 let settings = EditorSettings::test(&cx);
4475 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(9, 5), cx));
4476 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4477 view.update(cx, |view, cx| {
4478 view.fold_ranges(
4479 vec![
4480 Point::new(0, 2)..Point::new(1, 2),
4481 Point::new(2, 3)..Point::new(4, 1),
4482 Point::new(7, 0)..Point::new(8, 4),
4483 ],
4484 cx,
4485 );
4486 view.select_display_ranges(
4487 &[
4488 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4489 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4490 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4491 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
4492 ],
4493 cx,
4494 )
4495 .unwrap();
4496 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
4497 });
4498
4499 view.update(cx, |view, cx| {
4500 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4501 assert_eq!(
4502 view.display_text(cx),
4503 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
4504 );
4505 assert_eq!(
4506 view.selection_ranges(cx),
4507 [
4508 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4509 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4510 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4511 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
4512 ]
4513 );
4514 });
4515
4516 view.update(cx, |view, cx| {
4517 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
4518 .unwrap();
4519 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
4520 assert_eq!(
4521 view.display_text(cx),
4522 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
4523 );
4524 assert_eq!(
4525 view.selection_ranges(cx),
4526 [
4527 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
4528 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4529 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
4530 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
4531 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
4532 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
4533 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
4534 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
4535 ]
4536 );
4537 });
4538 }
4539
4540 #[gpui::test]
4541 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
4542 let settings = EditorSettings::test(&cx);
4543 let buffer = cx.add_model(|cx| Buffer::new(0, "abc\ndefghi\n\njk\nlmno\n", cx));
4544 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4545
4546 view.update(cx, |view, cx| {
4547 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
4548 .unwrap();
4549 });
4550 view.update(cx, |view, cx| {
4551 view.add_selection_above(&AddSelectionAbove, cx);
4552 assert_eq!(
4553 view.selection_ranges(cx),
4554 vec![
4555 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4556 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4557 ]
4558 );
4559 });
4560
4561 view.update(cx, |view, cx| {
4562 view.add_selection_above(&AddSelectionAbove, cx);
4563 assert_eq!(
4564 view.selection_ranges(cx),
4565 vec![
4566 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4567 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
4568 ]
4569 );
4570 });
4571
4572 view.update(cx, |view, cx| {
4573 view.add_selection_below(&AddSelectionBelow, cx);
4574 assert_eq!(
4575 view.selection_ranges(cx),
4576 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
4577 );
4578 });
4579
4580 view.update(cx, |view, cx| {
4581 view.add_selection_below(&AddSelectionBelow, cx);
4582 assert_eq!(
4583 view.selection_ranges(cx),
4584 vec![
4585 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4586 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4587 ]
4588 );
4589 });
4590
4591 view.update(cx, |view, cx| {
4592 view.add_selection_below(&AddSelectionBelow, cx);
4593 assert_eq!(
4594 view.selection_ranges(cx),
4595 vec![
4596 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
4597 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
4598 ]
4599 );
4600 });
4601
4602 view.update(cx, |view, cx| {
4603 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
4604 .unwrap();
4605 });
4606 view.update(cx, |view, cx| {
4607 view.add_selection_below(&AddSelectionBelow, cx);
4608 assert_eq!(
4609 view.selection_ranges(cx),
4610 vec![
4611 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4612 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4613 ]
4614 );
4615 });
4616
4617 view.update(cx, |view, cx| {
4618 view.add_selection_below(&AddSelectionBelow, cx);
4619 assert_eq!(
4620 view.selection_ranges(cx),
4621 vec![
4622 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4623 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
4624 ]
4625 );
4626 });
4627
4628 view.update(cx, |view, cx| {
4629 view.add_selection_above(&AddSelectionAbove, cx);
4630 assert_eq!(
4631 view.selection_ranges(cx),
4632 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4633 );
4634 });
4635
4636 view.update(cx, |view, cx| {
4637 view.add_selection_above(&AddSelectionAbove, cx);
4638 assert_eq!(
4639 view.selection_ranges(cx),
4640 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
4641 );
4642 });
4643
4644 view.update(cx, |view, cx| {
4645 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
4646 .unwrap();
4647 view.add_selection_below(&AddSelectionBelow, cx);
4648 assert_eq!(
4649 view.selection_ranges(cx),
4650 vec![
4651 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4652 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4653 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4654 ]
4655 );
4656 });
4657
4658 view.update(cx, |view, cx| {
4659 view.add_selection_below(&AddSelectionBelow, cx);
4660 assert_eq!(
4661 view.selection_ranges(cx),
4662 vec![
4663 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4664 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4665 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4666 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
4667 ]
4668 );
4669 });
4670
4671 view.update(cx, |view, cx| {
4672 view.add_selection_above(&AddSelectionAbove, cx);
4673 assert_eq!(
4674 view.selection_ranges(cx),
4675 vec![
4676 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4677 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
4678 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
4679 ]
4680 );
4681 });
4682
4683 view.update(cx, |view, cx| {
4684 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
4685 .unwrap();
4686 });
4687 view.update(cx, |view, cx| {
4688 view.add_selection_above(&AddSelectionAbove, cx);
4689 assert_eq!(
4690 view.selection_ranges(cx),
4691 vec![
4692 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
4693 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4694 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4695 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4696 ]
4697 );
4698 });
4699
4700 view.update(cx, |view, cx| {
4701 view.add_selection_below(&AddSelectionBelow, cx);
4702 assert_eq!(
4703 view.selection_ranges(cx),
4704 vec![
4705 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
4706 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
4707 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
4708 ]
4709 );
4710 });
4711 }
4712
4713 #[gpui::test]
4714 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
4715 let settings = cx.read(EditorSettings::test);
4716 let language = Some(Arc::new(Language::new(
4717 LanguageConfig::default(),
4718 tree_sitter_rust::language(),
4719 )));
4720
4721 let text = r#"
4722 use mod1::mod2::{mod3, mod4};
4723
4724 fn fn_1(param1: bool, param2: &str) {
4725 let var1 = "text";
4726 }
4727 "#
4728 .unindent();
4729
4730 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4731 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4732 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4733 .await;
4734
4735 view.update(&mut cx, |view, cx| {
4736 view.select_display_ranges(
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 cx,
4743 )
4744 .unwrap();
4745 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4746 });
4747 assert_eq!(
4748 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4749 &[
4750 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4751 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4752 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4753 ]
4754 );
4755
4756 view.update(&mut cx, |view, cx| {
4757 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4758 });
4759 assert_eq!(
4760 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4761 &[
4762 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4763 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4764 ]
4765 );
4766
4767 view.update(&mut cx, |view, cx| {
4768 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4769 });
4770 assert_eq!(
4771 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4772 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4773 );
4774
4775 // Trying to expand the selected syntax node one more time has no effect.
4776 view.update(&mut cx, |view, cx| {
4777 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4778 });
4779 assert_eq!(
4780 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4781 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
4782 );
4783
4784 view.update(&mut cx, |view, cx| {
4785 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4786 });
4787 assert_eq!(
4788 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4789 &[
4790 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4791 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
4792 ]
4793 );
4794
4795 view.update(&mut cx, |view, cx| {
4796 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4797 });
4798 assert_eq!(
4799 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4800 &[
4801 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
4802 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4803 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
4804 ]
4805 );
4806
4807 view.update(&mut cx, |view, cx| {
4808 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4809 });
4810 assert_eq!(
4811 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4812 &[
4813 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4814 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4815 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4816 ]
4817 );
4818
4819 // Trying to shrink the selected syntax node one more time has no effect.
4820 view.update(&mut cx, |view, cx| {
4821 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
4822 });
4823 assert_eq!(
4824 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4825 &[
4826 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
4827 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
4828 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
4829 ]
4830 );
4831
4832 // Ensure that we keep expanding the selection if the larger selection starts or ends within
4833 // a fold.
4834 view.update(&mut cx, |view, cx| {
4835 view.fold_ranges(
4836 vec![
4837 Point::new(0, 21)..Point::new(0, 24),
4838 Point::new(3, 20)..Point::new(3, 22),
4839 ],
4840 cx,
4841 );
4842 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
4843 });
4844 assert_eq!(
4845 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
4846 &[
4847 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
4848 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
4849 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
4850 ]
4851 );
4852 }
4853
4854 #[gpui::test]
4855 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
4856 let settings = cx.read(EditorSettings::test);
4857 let language = Some(Arc::new(Language::new(
4858 LanguageConfig {
4859 brackets: vec![
4860 BracketPair {
4861 start: "{".to_string(),
4862 end: "}".to_string(),
4863 close: true,
4864 newline: true,
4865 },
4866 BracketPair {
4867 start: "/*".to_string(),
4868 end: " */".to_string(),
4869 close: true,
4870 newline: true,
4871 },
4872 ],
4873 ..Default::default()
4874 },
4875 tree_sitter_rust::language(),
4876 )));
4877
4878 let text = r#"
4879 a
4880
4881 /
4882
4883 "#
4884 .unindent();
4885
4886 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4887 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
4888 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
4889 .await;
4890
4891 view.update(&mut cx, |view, cx| {
4892 view.select_display_ranges(
4893 &[
4894 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4895 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4896 ],
4897 cx,
4898 )
4899 .unwrap();
4900 view.handle_input(&Input("{".to_string()), cx);
4901 view.handle_input(&Input("{".to_string()), cx);
4902 view.handle_input(&Input("{".to_string()), cx);
4903 assert_eq!(
4904 view.text(cx),
4905 "
4906 {{{}}}
4907 {{{}}}
4908 /
4909
4910 "
4911 .unindent()
4912 );
4913
4914 view.move_right(&MoveRight, cx);
4915 view.handle_input(&Input("}".to_string()), cx);
4916 view.handle_input(&Input("}".to_string()), cx);
4917 view.handle_input(&Input("}".to_string()), cx);
4918 assert_eq!(
4919 view.text(cx),
4920 "
4921 {{{}}}}
4922 {{{}}}}
4923 /
4924
4925 "
4926 .unindent()
4927 );
4928
4929 view.undo(&Undo, cx);
4930 view.handle_input(&Input("/".to_string()), cx);
4931 view.handle_input(&Input("*".to_string()), cx);
4932 assert_eq!(
4933 view.text(cx),
4934 "
4935 /* */
4936 /* */
4937 /
4938
4939 "
4940 .unindent()
4941 );
4942
4943 view.undo(&Undo, cx);
4944 view.select_display_ranges(
4945 &[
4946 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4947 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4948 ],
4949 cx,
4950 )
4951 .unwrap();
4952 view.handle_input(&Input("*".to_string()), cx);
4953 assert_eq!(
4954 view.text(cx),
4955 "
4956 a
4957
4958 /*
4959 *
4960 "
4961 .unindent()
4962 );
4963 });
4964 }
4965
4966 #[gpui::test]
4967 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
4968 let settings = cx.read(EditorSettings::test);
4969 let language = Some(Arc::new(Language::new(
4970 LanguageConfig {
4971 brackets: vec![
4972 BracketPair {
4973 start: "{".to_string(),
4974 end: "}".to_string(),
4975 close: true,
4976 newline: true,
4977 },
4978 BracketPair {
4979 start: "/* ".to_string(),
4980 end: " */".to_string(),
4981 close: true,
4982 newline: true,
4983 },
4984 ],
4985 ..Default::default()
4986 },
4987 tree_sitter_rust::language(),
4988 )));
4989
4990 let text = concat!(
4991 "{ }\n", // Suppress rustfmt
4992 " x\n", //
4993 " /* */\n", //
4994 "x\n", //
4995 "{{} }\n", //
4996 );
4997
4998 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
4999 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5000 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing())
5001 .await;
5002
5003 view.update(&mut cx, |view, cx| {
5004 view.select_display_ranges(
5005 &[
5006 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5007 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5008 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5009 ],
5010 cx,
5011 )
5012 .unwrap();
5013 view.newline(&Newline, cx);
5014
5015 assert_eq!(
5016 view.buffer().read(cx).text(),
5017 concat!(
5018 "{ \n", // Suppress rustfmt
5019 "\n", //
5020 "}\n", //
5021 " x\n", //
5022 " /* \n", //
5023 " \n", //
5024 " */\n", //
5025 "x\n", //
5026 "{{} \n", //
5027 "}\n", //
5028 )
5029 );
5030 });
5031 }
5032
5033 impl Editor {
5034 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5035 self.selections_in_range(
5036 self.selection_set_id,
5037 DisplayPoint::zero()..self.max_point(cx),
5038 cx,
5039 )
5040 .collect::<Vec<_>>()
5041 }
5042 }
5043
5044 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5045 let point = DisplayPoint::new(row as u32, column as u32);
5046 point..point
5047 }
5048
5049 fn build_editor(
5050 buffer: ModelHandle<Buffer>,
5051 settings: EditorSettings,
5052 cx: &mut ViewContext<Editor>,
5053 ) -> Editor {
5054 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5055 }
5056}
5057
5058trait RangeExt<T> {
5059 fn sorted(&self) -> Range<T>;
5060 fn to_inclusive(&self) -> RangeInclusive<T>;
5061}
5062
5063impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5064 fn sorted(&self) -> Self {
5065 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5066 }
5067
5068 fn to_inclusive(&self) -> RangeInclusive<T> {
5069 self.start.clone()..=self.end.clone()
5070 }
5071}