1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use clock::ReplicaId;
12pub use display_map::DisplayPoint;
13use display_map::*;
14pub use element::*;
15use gpui::{
16 action,
17 elements::Text,
18 geometry::vector::{vec2f, Vector2F},
19 keymap::Binding,
20 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
21 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
22};
23use items::BufferItemHandle;
24use language::{
25 BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal,
26 TransactionId,
27};
28pub use multi_buffer::MultiBuffer;
29use multi_buffer::{
30 Anchor, AnchorRangeExt, MultiBufferChunks, MultiBufferSnapshot, ToOffset, ToPoint,
31};
32use serde::{Deserialize, Serialize};
33use smallvec::SmallVec;
34use smol::Timer;
35use std::{
36 cell::RefCell,
37 cmp,
38 collections::HashMap,
39 iter::{self, FromIterator},
40 mem,
41 ops::{Deref, Range, RangeInclusive, Sub},
42 rc::Rc,
43 sync::Arc,
44 time::{Duration, Instant},
45};
46use sum_tree::Bias;
47use text::rope::TextDimension;
48use theme::{DiagnosticStyle, EditorStyle};
49use util::post_inc;
50use workspace::{EntryOpener, Workspace};
51
52const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
53const MAX_LINE_LEN: usize = 1024;
54
55action!(Cancel);
56action!(Backspace);
57action!(Delete);
58action!(Input, String);
59action!(Newline);
60action!(Tab);
61action!(Outdent);
62action!(DeleteLine);
63action!(DeleteToPreviousWordBoundary);
64action!(DeleteToNextWordBoundary);
65action!(DeleteToBeginningOfLine);
66action!(DeleteToEndOfLine);
67action!(CutToEndOfLine);
68action!(DuplicateLine);
69action!(MoveLineUp);
70action!(MoveLineDown);
71action!(Cut);
72action!(Copy);
73action!(Paste);
74action!(Undo);
75action!(Redo);
76action!(MoveUp);
77action!(MoveDown);
78action!(MoveLeft);
79action!(MoveRight);
80action!(MoveToPreviousWordBoundary);
81action!(MoveToNextWordBoundary);
82action!(MoveToBeginningOfLine);
83action!(MoveToEndOfLine);
84action!(MoveToBeginning);
85action!(MoveToEnd);
86action!(SelectUp);
87action!(SelectDown);
88action!(SelectLeft);
89action!(SelectRight);
90action!(SelectToPreviousWordBoundary);
91action!(SelectToNextWordBoundary);
92action!(SelectToBeginningOfLine, bool);
93action!(SelectToEndOfLine);
94action!(SelectToBeginning);
95action!(SelectToEnd);
96action!(SelectAll);
97action!(SelectLine);
98action!(SplitSelectionIntoLines);
99action!(AddSelectionAbove);
100action!(AddSelectionBelow);
101action!(SelectNext, bool);
102action!(ToggleComments);
103action!(SelectLargerSyntaxNode);
104action!(SelectSmallerSyntaxNode);
105action!(MoveToEnclosingBracket);
106action!(ShowNextDiagnostic);
107action!(PageUp);
108action!(PageDown);
109action!(Fold);
110action!(Unfold);
111action!(FoldSelectedRanges);
112action!(Scroll, Vector2F);
113action!(Select, SelectPhase);
114
115pub fn init(cx: &mut MutableAppContext, entry_openers: &mut Vec<Box<dyn EntryOpener>>) {
116 entry_openers.push(Box::new(items::BufferOpener));
117 cx.add_bindings(vec![
118 Binding::new("escape", Cancel, Some("Editor")),
119 Binding::new("backspace", Backspace, Some("Editor")),
120 Binding::new("ctrl-h", Backspace, Some("Editor")),
121 Binding::new("delete", Delete, Some("Editor")),
122 Binding::new("ctrl-d", Delete, Some("Editor")),
123 Binding::new("enter", Newline, Some("Editor && mode == full")),
124 Binding::new(
125 "alt-enter",
126 Input("\n".into()),
127 Some("Editor && mode == auto_height"),
128 ),
129 Binding::new("tab", Tab, Some("Editor")),
130 Binding::new("shift-tab", Outdent, Some("Editor")),
131 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
132 Binding::new(
133 "alt-backspace",
134 DeleteToPreviousWordBoundary,
135 Some("Editor"),
136 ),
137 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
138 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
139 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
140 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
141 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
142 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
143 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
144 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
145 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
146 Binding::new("cmd-x", Cut, Some("Editor")),
147 Binding::new("cmd-c", Copy, Some("Editor")),
148 Binding::new("cmd-v", Paste, Some("Editor")),
149 Binding::new("cmd-z", Undo, Some("Editor")),
150 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
151 Binding::new("up", MoveUp, Some("Editor")),
152 Binding::new("down", MoveDown, Some("Editor")),
153 Binding::new("left", MoveLeft, Some("Editor")),
154 Binding::new("right", MoveRight, Some("Editor")),
155 Binding::new("ctrl-p", MoveUp, Some("Editor")),
156 Binding::new("ctrl-n", MoveDown, Some("Editor")),
157 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
158 Binding::new("ctrl-f", MoveRight, Some("Editor")),
159 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
160 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
161 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
162 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
163 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
164 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
165 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
166 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
167 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
168 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
169 Binding::new("shift-up", SelectUp, Some("Editor")),
170 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
171 Binding::new("shift-down", SelectDown, Some("Editor")),
172 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
173 Binding::new("shift-left", SelectLeft, Some("Editor")),
174 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
175 Binding::new("shift-right", SelectRight, Some("Editor")),
176 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
177 Binding::new(
178 "alt-shift-left",
179 SelectToPreviousWordBoundary,
180 Some("Editor"),
181 ),
182 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
183 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
184 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
185 Binding::new(
186 "cmd-shift-left",
187 SelectToBeginningOfLine(true),
188 Some("Editor"),
189 ),
190 Binding::new(
191 "ctrl-shift-A",
192 SelectToBeginningOfLine(true),
193 Some("Editor"),
194 ),
195 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
196 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
197 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
198 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
199 Binding::new("cmd-a", SelectAll, Some("Editor")),
200 Binding::new("cmd-l", SelectLine, Some("Editor")),
201 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
202 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
203 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
204 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
205 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
206 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
207 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
208 Binding::new("cmd-/", ToggleComments, Some("Editor")),
209 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
210 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
211 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
212 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
213 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
214 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
215 Binding::new("pageup", PageUp, Some("Editor")),
216 Binding::new("pagedown", PageDown, Some("Editor")),
217 Binding::new("alt-cmd-[", Fold, Some("Editor")),
218 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
219 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
220 ]);
221
222 cx.add_action(Editor::open_new);
223 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
224 cx.add_action(Editor::select);
225 cx.add_action(Editor::cancel);
226 cx.add_action(Editor::handle_input);
227 cx.add_action(Editor::newline);
228 cx.add_action(Editor::backspace);
229 cx.add_action(Editor::delete);
230 cx.add_action(Editor::tab);
231 cx.add_action(Editor::outdent);
232 cx.add_action(Editor::delete_line);
233 cx.add_action(Editor::delete_to_previous_word_boundary);
234 cx.add_action(Editor::delete_to_next_word_boundary);
235 cx.add_action(Editor::delete_to_beginning_of_line);
236 cx.add_action(Editor::delete_to_end_of_line);
237 cx.add_action(Editor::cut_to_end_of_line);
238 cx.add_action(Editor::duplicate_line);
239 cx.add_action(Editor::move_line_up);
240 cx.add_action(Editor::move_line_down);
241 cx.add_action(Editor::cut);
242 cx.add_action(Editor::copy);
243 cx.add_action(Editor::paste);
244 cx.add_action(Editor::undo);
245 cx.add_action(Editor::redo);
246 cx.add_action(Editor::move_up);
247 cx.add_action(Editor::move_down);
248 cx.add_action(Editor::move_left);
249 cx.add_action(Editor::move_right);
250 cx.add_action(Editor::move_to_previous_word_boundary);
251 cx.add_action(Editor::move_to_next_word_boundary);
252 cx.add_action(Editor::move_to_beginning_of_line);
253 cx.add_action(Editor::move_to_end_of_line);
254 cx.add_action(Editor::move_to_beginning);
255 cx.add_action(Editor::move_to_end);
256 cx.add_action(Editor::select_up);
257 cx.add_action(Editor::select_down);
258 cx.add_action(Editor::select_left);
259 cx.add_action(Editor::select_right);
260 cx.add_action(Editor::select_to_previous_word_boundary);
261 cx.add_action(Editor::select_to_next_word_boundary);
262 cx.add_action(Editor::select_to_beginning_of_line);
263 cx.add_action(Editor::select_to_end_of_line);
264 cx.add_action(Editor::select_to_beginning);
265 cx.add_action(Editor::select_to_end);
266 cx.add_action(Editor::select_all);
267 cx.add_action(Editor::select_line);
268 cx.add_action(Editor::split_selection_into_lines);
269 cx.add_action(Editor::add_selection_above);
270 cx.add_action(Editor::add_selection_below);
271 cx.add_action(Editor::select_next);
272 cx.add_action(Editor::toggle_comments);
273 cx.add_action(Editor::select_larger_syntax_node);
274 cx.add_action(Editor::select_smaller_syntax_node);
275 cx.add_action(Editor::move_to_enclosing_bracket);
276 cx.add_action(Editor::show_next_diagnostic);
277 cx.add_action(Editor::page_up);
278 cx.add_action(Editor::page_down);
279 cx.add_action(Editor::fold);
280 cx.add_action(Editor::unfold);
281 cx.add_action(Editor::fold_selected_ranges);
282}
283
284trait SelectionExt {
285 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
286 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
287 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
288 fn spanned_rows(
289 &self,
290 include_end_if_at_line_start: bool,
291 map: &DisplaySnapshot,
292 ) -> SpannedRows;
293}
294
295struct SpannedRows {
296 buffer_rows: Range<u32>,
297 display_rows: Range<u32>,
298}
299
300#[derive(Clone, Debug)]
301pub enum SelectPhase {
302 Begin {
303 position: DisplayPoint,
304 add: bool,
305 click_count: usize,
306 },
307 BeginColumnar {
308 position: DisplayPoint,
309 overshoot: u32,
310 },
311 Extend {
312 position: DisplayPoint,
313 click_count: usize,
314 },
315 Update {
316 position: DisplayPoint,
317 overshoot: u32,
318 scroll_position: Vector2F,
319 },
320 End,
321}
322
323#[derive(Clone, Debug)]
324enum SelectMode {
325 Character,
326 Word(Range<Anchor>),
327 Line(Range<Anchor>),
328 All,
329}
330
331#[derive(PartialEq, Eq)]
332pub enum Autoscroll {
333 Fit,
334 Center,
335 Newest,
336}
337
338#[derive(Copy, Clone, PartialEq, Eq)]
339pub enum EditorMode {
340 SingleLine,
341 AutoHeight { max_lines: usize },
342 Full,
343}
344
345#[derive(Clone)]
346pub struct EditorSettings {
347 pub tab_size: usize,
348 pub soft_wrap: SoftWrap,
349 pub style: EditorStyle,
350}
351
352#[derive(Clone)]
353pub enum SoftWrap {
354 None,
355 EditorWidth,
356 Column(u32),
357}
358
359pub struct Editor {
360 handle: WeakViewHandle<Self>,
361 buffer: ModelHandle<MultiBuffer>,
362 display_map: ModelHandle<DisplayMap>,
363 next_selection_id: usize,
364 selections: Arc<[Selection<Anchor>]>,
365 pending_selection: Option<PendingSelection>,
366 columnar_selection_tail: Option<Anchor>,
367 add_selections_state: Option<AddSelectionsState>,
368 select_next_state: Option<SelectNextState>,
369 selection_history:
370 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
371 autoclose_stack: Vec<BracketPairState>,
372 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
373 active_diagnostics: Option<ActiveDiagnosticGroup>,
374 scroll_position: Vector2F,
375 scroll_top_anchor: Anchor,
376 autoscroll_request: Option<Autoscroll>,
377 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
378 focused: bool,
379 show_local_cursors: bool,
380 blink_epoch: usize,
381 blinking_paused: bool,
382 mode: EditorMode,
383 placeholder_text: Option<Arc<str>>,
384 highlighted_row: Option<u32>,
385}
386
387pub struct EditorSnapshot {
388 pub mode: EditorMode,
389 pub display_snapshot: DisplaySnapshot,
390 pub placeholder_text: Option<Arc<str>>,
391 is_focused: bool,
392 scroll_position: Vector2F,
393 scroll_top_anchor: Anchor,
394}
395
396struct PendingSelection {
397 selection: Selection<Anchor>,
398 mode: SelectMode,
399}
400
401struct AddSelectionsState {
402 above: bool,
403 stack: Vec<usize>,
404}
405
406struct SelectNextState {
407 query: AhoCorasick,
408 wordwise: bool,
409 done: bool,
410}
411
412#[derive(Debug)]
413struct BracketPairState {
414 ranges: Vec<Range<Anchor>>,
415 pair: BracketPair,
416}
417
418#[derive(Debug)]
419struct ActiveDiagnosticGroup {
420 primary_range: Range<Anchor>,
421 primary_message: String,
422 blocks: HashMap<BlockId, Diagnostic>,
423 is_valid: bool,
424}
425
426#[derive(Serialize, Deserialize)]
427struct ClipboardSelection {
428 len: usize,
429 is_entire_line: bool,
430}
431
432impl Editor {
433 pub fn single_line(
434 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
435 cx: &mut ViewContext<Self>,
436 ) -> Self {
437 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
438 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
439 let mut view = Self::for_buffer(buffer, build_settings, cx);
440 view.mode = EditorMode::SingleLine;
441 view
442 }
443
444 pub fn auto_height(
445 max_lines: usize,
446 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
447 cx: &mut ViewContext<Self>,
448 ) -> Self {
449 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
450 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
451 let mut view = Self::for_buffer(buffer, build_settings, cx);
452 view.mode = EditorMode::AutoHeight { max_lines };
453 view
454 }
455
456 pub fn for_buffer(
457 buffer: ModelHandle<MultiBuffer>,
458 build_settings: impl 'static + Fn(&AppContext) -> EditorSettings,
459 cx: &mut ViewContext<Self>,
460 ) -> Self {
461 Self::new(buffer, Rc::new(RefCell::new(build_settings)), cx)
462 }
463
464 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
465 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
466 clone.scroll_position = self.scroll_position;
467 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
468 clone
469 }
470
471 pub fn new(
472 buffer: ModelHandle<MultiBuffer>,
473 build_settings: Rc<RefCell<dyn Fn(&AppContext) -> EditorSettings>>,
474 cx: &mut ViewContext<Self>,
475 ) -> Self {
476 let settings = build_settings.borrow_mut()(cx);
477 let display_map = cx.add_model(|cx| {
478 DisplayMap::new(
479 buffer.clone(),
480 settings.tab_size,
481 settings.style.text.font_id,
482 settings.style.text.font_size,
483 None,
484 cx,
485 )
486 });
487 cx.observe(&buffer, Self::on_buffer_changed).detach();
488 cx.subscribe(&buffer, Self::on_buffer_event).detach();
489 cx.observe(&display_map, Self::on_display_map_changed)
490 .detach();
491
492 let mut next_selection_id = 0;
493 let selections = Arc::from(
494 &[Selection {
495 id: post_inc(&mut next_selection_id),
496 start: Anchor::min(),
497 end: Anchor::min(),
498 reversed: false,
499 goal: SelectionGoal::None,
500 }][..],
501 );
502
503 Self {
504 handle: cx.weak_handle(),
505 buffer,
506 display_map,
507 selections,
508 pending_selection: None,
509 columnar_selection_tail: None,
510 next_selection_id,
511 add_selections_state: None,
512 select_next_state: None,
513 selection_history: Default::default(),
514 autoclose_stack: Default::default(),
515 select_larger_syntax_node_stack: Vec::new(),
516 active_diagnostics: None,
517 build_settings,
518 scroll_position: Vector2F::zero(),
519 scroll_top_anchor: Anchor::min(),
520 autoscroll_request: None,
521 focused: false,
522 show_local_cursors: false,
523 blink_epoch: 0,
524 blinking_paused: false,
525 mode: EditorMode::Full,
526 placeholder_text: None,
527 highlighted_row: None,
528 }
529 }
530
531 pub fn open_new(
532 workspace: &mut Workspace,
533 _: &workspace::OpenNew,
534 cx: &mut ViewContext<Workspace>,
535 ) {
536 let buffer = cx.add_model(|cx| {
537 Buffer::new(0, "", cx).with_language(Some(language::PLAIN_TEXT.clone()), None, cx)
538 });
539 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
540 workspace.add_item(BufferItemHandle(buffer), cx);
541 }
542
543 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
544 self.buffer.read(cx).replica_id()
545 }
546
547 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
548 &self.buffer
549 }
550
551 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
552 EditorSnapshot {
553 mode: self.mode,
554 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
555 scroll_position: self.scroll_position,
556 scroll_top_anchor: self.scroll_top_anchor.clone(),
557 placeholder_text: self.placeholder_text.clone(),
558 is_focused: self
559 .handle
560 .upgrade(cx)
561 .map_or(false, |handle| handle.is_focused(cx)),
562 }
563 }
564
565 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
566 self.buffer.read(cx).language(cx)
567 }
568
569 pub fn set_placeholder_text(
570 &mut self,
571 placeholder_text: impl Into<Arc<str>>,
572 cx: &mut ViewContext<Self>,
573 ) {
574 self.placeholder_text = Some(placeholder_text.into());
575 cx.notify();
576 }
577
578 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
579 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
580 let scroll_top_buffer_offset =
581 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
582 self.scroll_top_anchor = map
583 .buffer_snapshot
584 .anchor_at(scroll_top_buffer_offset, Bias::Right);
585 self.scroll_position = vec2f(
586 scroll_position.x(),
587 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
588 );
589
590 debug_assert_eq!(
591 compute_scroll_position(&map, self.scroll_position, &self.scroll_top_anchor),
592 scroll_position
593 );
594
595 cx.notify();
596 }
597
598 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
599 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
600 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
601 }
602
603 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
604 if max < self.scroll_position.x() {
605 self.scroll_position.set_x(max);
606 true
607 } else {
608 false
609 }
610 }
611
612 pub fn autoscroll_vertically(
613 &mut self,
614 viewport_height: f32,
615 line_height: f32,
616 cx: &mut ViewContext<Self>,
617 ) -> bool {
618 let visible_lines = viewport_height / line_height;
619 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
620 let mut scroll_position =
621 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
622 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
623 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
624 } else {
625 display_map.max_point().row().saturating_sub(1) as f32
626 };
627 if scroll_position.y() > max_scroll_top {
628 scroll_position.set_y(max_scroll_top);
629 self.set_scroll_position(scroll_position, cx);
630 }
631
632 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
633 autoscroll
634 } else {
635 return false;
636 };
637
638 let first_cursor_top;
639 let last_cursor_bottom;
640 if autoscroll == Autoscroll::Newest {
641 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
642 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
643 last_cursor_bottom = first_cursor_top + 1.;
644 } else {
645 let selections = self.local_selections::<Point>(cx);
646 first_cursor_top = selections
647 .first()
648 .unwrap()
649 .head()
650 .to_display_point(&display_map)
651 .row() as f32;
652 last_cursor_bottom = selections
653 .last()
654 .unwrap()
655 .head()
656 .to_display_point(&display_map)
657 .row() as f32
658 + 1.0;
659 }
660
661 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
662 0.
663 } else {
664 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
665 };
666 if margin < 0.0 {
667 return false;
668 }
669
670 match autoscroll {
671 Autoscroll::Fit | Autoscroll::Newest => {
672 let margin = margin.min(3.0);
673 let target_top = (first_cursor_top - margin).max(0.0);
674 let target_bottom = last_cursor_bottom + margin;
675 let start_row = scroll_position.y();
676 let end_row = start_row + visible_lines;
677
678 if target_top < start_row {
679 scroll_position.set_y(target_top);
680 self.set_scroll_position(scroll_position, cx);
681 } else if target_bottom >= end_row {
682 scroll_position.set_y(target_bottom - visible_lines);
683 self.set_scroll_position(scroll_position, cx);
684 }
685 }
686 Autoscroll::Center => {
687 scroll_position.set_y((first_cursor_top - margin).max(0.0));
688 self.set_scroll_position(scroll_position, cx);
689 }
690 }
691
692 true
693 }
694
695 pub fn autoscroll_horizontally(
696 &mut self,
697 start_row: u32,
698 viewport_width: f32,
699 scroll_width: f32,
700 max_glyph_width: f32,
701 layouts: &[text_layout::Line],
702 cx: &mut ViewContext<Self>,
703 ) -> bool {
704 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
705 let selections = self.local_selections::<Point>(cx);
706 let mut target_left = std::f32::INFINITY;
707 let mut target_right = 0.0_f32;
708 for selection in selections {
709 let head = selection.head().to_display_point(&display_map);
710 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
711 let start_column = head.column().saturating_sub(3);
712 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
713 target_left = target_left.min(
714 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
715 );
716 target_right = target_right.max(
717 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
718 + max_glyph_width,
719 );
720 }
721 }
722 target_right = target_right.min(scroll_width);
723
724 if target_right - target_left > viewport_width {
725 return false;
726 }
727
728 let scroll_left = self.scroll_position.x() * max_glyph_width;
729 let scroll_right = scroll_left + viewport_width;
730
731 if target_left < scroll_left {
732 self.scroll_position.set_x(target_left / max_glyph_width);
733 true
734 } else if target_right > scroll_right {
735 self.scroll_position
736 .set_x((target_right - viewport_width) / max_glyph_width);
737 true
738 } else {
739 false
740 }
741 }
742
743 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
744 match phase {
745 SelectPhase::Begin {
746 position,
747 add,
748 click_count,
749 } => self.begin_selection(*position, *add, *click_count, cx),
750 SelectPhase::BeginColumnar {
751 position,
752 overshoot,
753 } => self.begin_columnar_selection(*position, *overshoot, cx),
754 SelectPhase::Extend {
755 position,
756 click_count,
757 } => self.extend_selection(*position, *click_count, cx),
758 SelectPhase::Update {
759 position,
760 overshoot,
761 scroll_position,
762 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
763 SelectPhase::End => self.end_selection(cx),
764 }
765 }
766
767 fn extend_selection(
768 &mut self,
769 position: DisplayPoint,
770 click_count: usize,
771 cx: &mut ViewContext<Self>,
772 ) {
773 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
774 let tail = self
775 .newest_selection::<usize>(&display_map.buffer_snapshot)
776 .tail();
777 self.begin_selection(position, false, click_count, cx);
778
779 let position = position.to_offset(&display_map, Bias::Left);
780 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
781 let pending = self.pending_selection.as_mut().unwrap();
782
783 if position >= tail {
784 pending.selection.start = tail_anchor.clone();
785 } else {
786 pending.selection.end = tail_anchor.clone();
787 pending.selection.reversed = true;
788 }
789
790 match &mut pending.mode {
791 SelectMode::Word(range) | SelectMode::Line(range) => {
792 *range = tail_anchor.clone()..tail_anchor
793 }
794 _ => {}
795 }
796 }
797
798 fn begin_selection(
799 &mut self,
800 position: DisplayPoint,
801 add: bool,
802 click_count: usize,
803 cx: &mut ViewContext<Self>,
804 ) {
805 if !self.focused {
806 cx.focus_self();
807 cx.emit(Event::Activate);
808 }
809
810 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
811 let buffer = &display_map.buffer_snapshot;
812 let start;
813 let end;
814 let mode;
815 match click_count {
816 1 => {
817 start = buffer.anchor_before(position.to_point(&display_map));
818 end = start.clone();
819 mode = SelectMode::Character;
820 }
821 2 => {
822 let range = movement::surrounding_word(&display_map, position);
823 start = buffer.anchor_before(range.start.to_point(&display_map));
824 end = buffer.anchor_before(range.end.to_point(&display_map));
825 mode = SelectMode::Word(start.clone()..end.clone());
826 }
827 3 => {
828 let position = display_map.clip_point(position, Bias::Left);
829 let line_start = movement::line_beginning(&display_map, position, false);
830 let mut next_line_start = line_start.clone();
831 *next_line_start.row_mut() += 1;
832 *next_line_start.column_mut() = 0;
833 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
834
835 start = buffer.anchor_before(line_start.to_point(&display_map));
836 end = buffer.anchor_before(next_line_start.to_point(&display_map));
837 mode = SelectMode::Line(start.clone()..end.clone());
838 }
839 _ => {
840 start = buffer.anchor_before(0);
841 end = buffer.anchor_before(buffer.len());
842 mode = SelectMode::All;
843 }
844 }
845
846 let selection = Selection {
847 id: post_inc(&mut self.next_selection_id),
848 start,
849 end,
850 reversed: false,
851 goal: SelectionGoal::None,
852 };
853
854 if !add {
855 self.update_selections::<usize>(Vec::new(), None, cx);
856 } else if click_count > 1 {
857 // Remove the newest selection since it was only added as part of this multi-click.
858 let newest_selection = self.newest_selection::<usize>(buffer);
859 let mut selections = self.local_selections(cx);
860 selections.retain(|selection| selection.id != newest_selection.id);
861 self.update_selections::<usize>(selections, None, cx)
862 }
863
864 self.pending_selection = Some(PendingSelection { selection, mode });
865
866 cx.notify();
867 }
868
869 fn begin_columnar_selection(
870 &mut self,
871 position: DisplayPoint,
872 overshoot: u32,
873 cx: &mut ViewContext<Self>,
874 ) {
875 if !self.focused {
876 cx.focus_self();
877 cx.emit(Event::Activate);
878 }
879
880 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
881 let tail = self
882 .newest_selection::<Point>(&display_map.buffer_snapshot)
883 .tail();
884 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
885
886 self.select_columns(
887 tail.to_display_point(&display_map),
888 position,
889 overshoot,
890 &display_map,
891 cx,
892 );
893 }
894
895 fn update_selection(
896 &mut self,
897 position: DisplayPoint,
898 overshoot: u32,
899 scroll_position: Vector2F,
900 cx: &mut ViewContext<Self>,
901 ) {
902 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
903
904 if let Some(tail) = self.columnar_selection_tail.as_ref() {
905 let tail = tail.to_display_point(&display_map);
906 self.select_columns(tail, position, overshoot, &display_map, cx);
907 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
908 let buffer = self.buffer.read(cx).snapshot(cx);
909 let head;
910 let tail;
911 match mode {
912 SelectMode::Character => {
913 head = position.to_point(&display_map);
914 tail = selection.tail().to_point(&buffer);
915 }
916 SelectMode::Word(original_range) => {
917 let original_display_range = original_range.start.to_display_point(&display_map)
918 ..original_range.end.to_display_point(&display_map);
919 let original_buffer_range = original_display_range.start.to_point(&display_map)
920 ..original_display_range.end.to_point(&display_map);
921 if movement::is_inside_word(&display_map, position)
922 || original_display_range.contains(&position)
923 {
924 let word_range = movement::surrounding_word(&display_map, position);
925 if word_range.start < original_display_range.start {
926 head = word_range.start.to_point(&display_map);
927 } else {
928 head = word_range.end.to_point(&display_map);
929 }
930 } else {
931 head = position.to_point(&display_map);
932 }
933
934 if head <= original_buffer_range.start {
935 tail = original_buffer_range.end;
936 } else {
937 tail = original_buffer_range.start;
938 }
939 }
940 SelectMode::Line(original_range) => {
941 let original_display_range = original_range.start.to_display_point(&display_map)
942 ..original_range.end.to_display_point(&display_map);
943 let original_buffer_range = original_display_range.start.to_point(&display_map)
944 ..original_display_range.end.to_point(&display_map);
945 let line_start = movement::line_beginning(&display_map, position, false);
946 let mut next_line_start = line_start.clone();
947 *next_line_start.row_mut() += 1;
948 *next_line_start.column_mut() = 0;
949 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
950
951 if line_start < original_display_range.start {
952 head = line_start.to_point(&display_map);
953 } else {
954 head = next_line_start.to_point(&display_map);
955 }
956
957 if head <= original_buffer_range.start {
958 tail = original_buffer_range.end;
959 } else {
960 tail = original_buffer_range.start;
961 }
962 }
963 SelectMode::All => {
964 return;
965 }
966 };
967
968 if head < tail {
969 selection.start = buffer.anchor_before(head);
970 selection.end = buffer.anchor_before(tail);
971 selection.reversed = true;
972 } else {
973 selection.start = buffer.anchor_before(tail);
974 selection.end = buffer.anchor_before(head);
975 selection.reversed = false;
976 }
977 } else {
978 log::error!("update_selection dispatched with no pending selection");
979 return;
980 }
981
982 self.set_scroll_position(scroll_position, cx);
983 cx.notify();
984 }
985
986 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
987 self.columnar_selection_tail.take();
988 if self.pending_selection.is_some() {
989 let selections = self.local_selections::<usize>(cx);
990 self.update_selections(selections, None, cx);
991 }
992 }
993
994 fn select_columns(
995 &mut self,
996 tail: DisplayPoint,
997 head: DisplayPoint,
998 overshoot: u32,
999 display_map: &DisplaySnapshot,
1000 cx: &mut ViewContext<Self>,
1001 ) {
1002 let start_row = cmp::min(tail.row(), head.row());
1003 let end_row = cmp::max(tail.row(), head.row());
1004 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1005 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1006 let reversed = start_column < tail.column();
1007
1008 let selections = (start_row..=end_row)
1009 .filter_map(|row| {
1010 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1011 let start = display_map
1012 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1013 .to_point(&display_map);
1014 let end = display_map
1015 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1016 .to_point(&display_map);
1017 Some(Selection {
1018 id: post_inc(&mut self.next_selection_id),
1019 start,
1020 end,
1021 reversed,
1022 goal: SelectionGoal::None,
1023 })
1024 } else {
1025 None
1026 }
1027 })
1028 .collect::<Vec<_>>();
1029
1030 self.update_selections(selections, None, cx);
1031 cx.notify();
1032 }
1033
1034 pub fn is_selecting(&self) -> bool {
1035 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1036 }
1037
1038 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1039 if self.active_diagnostics.is_some() {
1040 self.dismiss_diagnostics(cx);
1041 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1042 let buffer = self.buffer.read(cx).snapshot(cx);
1043 let selection = Selection {
1044 id: selection.id,
1045 start: selection.start.to_point(&buffer),
1046 end: selection.end.to_point(&buffer),
1047 reversed: selection.reversed,
1048 goal: selection.goal,
1049 };
1050 if self.local_selections::<Point>(cx).is_empty() {
1051 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1052 }
1053 } else {
1054 let buffer = self.buffer.read(cx).snapshot(cx);
1055 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1056 if self.selection_count() == 1 {
1057 oldest_selection.start = oldest_selection.head().clone();
1058 oldest_selection.end = oldest_selection.head().clone();
1059 }
1060 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1061 }
1062 }
1063
1064 pub fn select_ranges<I, T>(
1065 &mut self,
1066 ranges: I,
1067 autoscroll: Option<Autoscroll>,
1068 cx: &mut ViewContext<Self>,
1069 ) where
1070 I: IntoIterator<Item = Range<T>>,
1071 T: ToOffset,
1072 {
1073 let buffer = self.buffer.read(cx).snapshot(cx);
1074 let selections = ranges
1075 .into_iter()
1076 .map(|range| {
1077 let mut start = range.start.to_offset(&buffer);
1078 let mut end = range.end.to_offset(&buffer);
1079 let reversed = if start > end {
1080 mem::swap(&mut start, &mut end);
1081 true
1082 } else {
1083 false
1084 };
1085 Selection {
1086 id: post_inc(&mut self.next_selection_id),
1087 start,
1088 end,
1089 reversed,
1090 goal: SelectionGoal::None,
1091 }
1092 })
1093 .collect();
1094 self.update_selections(selections, autoscroll, cx);
1095 }
1096
1097 #[cfg(test)]
1098 fn select_display_ranges<'a, T>(
1099 &mut self,
1100 ranges: T,
1101 cx: &mut ViewContext<Self>,
1102 ) -> anyhow::Result<()>
1103 where
1104 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1105 {
1106 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1107 let selections = ranges
1108 .into_iter()
1109 .map(|range| {
1110 let mut start = range.start;
1111 let mut end = range.end;
1112 let reversed = if start > end {
1113 mem::swap(&mut start, &mut end);
1114 true
1115 } else {
1116 false
1117 };
1118 Selection {
1119 id: post_inc(&mut self.next_selection_id),
1120 start: start.to_point(&display_map),
1121 end: end.to_point(&display_map),
1122 reversed,
1123 goal: SelectionGoal::None,
1124 }
1125 })
1126 .collect();
1127 self.update_selections(selections, None, cx);
1128 Ok(())
1129 }
1130
1131 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1132 let text = action.0.as_ref();
1133 if !self.skip_autoclose_end(text, cx) {
1134 self.start_transaction(cx);
1135 self.insert(text, cx);
1136 self.autoclose_pairs(cx);
1137 self.end_transaction(cx);
1138 }
1139 }
1140
1141 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1142 self.start_transaction(cx);
1143 let mut old_selections = SmallVec::<[_; 32]>::new();
1144 {
1145 let selections = self.local_selections::<Point>(cx);
1146 let buffer = self.buffer.read(cx).snapshot(cx);
1147 for selection in selections.iter() {
1148 let start_point = selection.start;
1149 let indent = buffer
1150 .indent_column_for_line(start_point.row)
1151 .min(start_point.column);
1152 let start = selection.start.to_offset(&buffer);
1153 let end = selection.end.to_offset(&buffer);
1154
1155 let mut insert_extra_newline = false;
1156 if let Some(language) = buffer.language() {
1157 let leading_whitespace_len = buffer
1158 .reversed_chars_at(start)
1159 .take_while(|c| c.is_whitespace() && *c != '\n')
1160 .map(|c| c.len_utf8())
1161 .sum::<usize>();
1162
1163 let trailing_whitespace_len = buffer
1164 .chars_at(end)
1165 .take_while(|c| c.is_whitespace() && *c != '\n')
1166 .map(|c| c.len_utf8())
1167 .sum::<usize>();
1168
1169 insert_extra_newline = language.brackets().iter().any(|pair| {
1170 let pair_start = pair.start.trim_end();
1171 let pair_end = pair.end.trim_start();
1172
1173 pair.newline
1174 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1175 && buffer.contains_str_at(
1176 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1177 pair_start,
1178 )
1179 });
1180 }
1181
1182 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1183 }
1184 }
1185
1186 let mut new_selections = Vec::with_capacity(old_selections.len());
1187 self.buffer.update(cx, |buffer, cx| {
1188 let mut delta = 0_isize;
1189 let mut pending_edit: Option<PendingEdit> = None;
1190 for (_, range, indent, insert_extra_newline) in &old_selections {
1191 if pending_edit.as_ref().map_or(false, |pending| {
1192 pending.indent != *indent
1193 || pending.insert_extra_newline != *insert_extra_newline
1194 }) {
1195 let pending = pending_edit.take().unwrap();
1196 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1197 new_text.push('\n');
1198 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1199 if pending.insert_extra_newline {
1200 new_text = new_text.repeat(2);
1201 }
1202 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1203 delta += pending.delta;
1204 }
1205
1206 let start = (range.start as isize + delta) as usize;
1207 let end = (range.end as isize + delta) as usize;
1208 let mut text_len = *indent as usize + 1;
1209 if *insert_extra_newline {
1210 text_len *= 2;
1211 }
1212
1213 let pending = pending_edit.get_or_insert_with(Default::default);
1214 pending.delta += text_len as isize - (end - start) as isize;
1215 pending.indent = *indent;
1216 pending.insert_extra_newline = *insert_extra_newline;
1217 pending.ranges.push(start..end);
1218 }
1219
1220 let pending = pending_edit.unwrap();
1221 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1222 new_text.push('\n');
1223 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1224 if pending.insert_extra_newline {
1225 new_text = new_text.repeat(2);
1226 }
1227 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1228
1229 let mut delta = 0_isize;
1230 new_selections.extend(old_selections.into_iter().map(
1231 |(id, range, indent, insert_extra_newline)| {
1232 let start = (range.start as isize + delta) as usize;
1233 let end = (range.end as isize + delta) as usize;
1234 let text_before_cursor_len = indent as usize + 1;
1235 let cursor = start + text_before_cursor_len;
1236 let text_len = if insert_extra_newline {
1237 text_before_cursor_len * 2
1238 } else {
1239 text_before_cursor_len
1240 };
1241 delta += text_len as isize - (end - start) as isize;
1242 Selection {
1243 id,
1244 start: cursor,
1245 end: cursor,
1246 reversed: false,
1247 goal: SelectionGoal::None,
1248 }
1249 },
1250 ))
1251 });
1252
1253 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1254 self.end_transaction(cx);
1255
1256 #[derive(Default)]
1257 struct PendingEdit {
1258 indent: u32,
1259 insert_extra_newline: bool,
1260 delta: isize,
1261 ranges: SmallVec<[Range<usize>; 32]>,
1262 }
1263 }
1264
1265 fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1266 self.start_transaction(cx);
1267 let old_selections = self.local_selections::<usize>(cx);
1268 let mut new_selections = Vec::new();
1269 self.buffer.update(cx, |buffer, cx| {
1270 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1271 buffer.edit_with_autoindent(edit_ranges, text, cx);
1272 let text_len = text.len() as isize;
1273 let mut delta = 0_isize;
1274 new_selections = old_selections
1275 .into_iter()
1276 .map(|selection| {
1277 let start = selection.start as isize;
1278 let end = selection.end as isize;
1279 let cursor = (start + delta + text_len) as usize;
1280 let deleted_count = end - start;
1281 delta += text_len - deleted_count;
1282 Selection {
1283 id: selection.id,
1284 start: cursor,
1285 end: cursor,
1286 reversed: false,
1287 goal: SelectionGoal::None,
1288 }
1289 })
1290 .collect();
1291 });
1292
1293 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1294 self.end_transaction(cx);
1295 }
1296
1297 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1298 let selections = self.local_selections::<usize>(cx);
1299 let new_autoclose_pair = self.buffer.update(cx, |buffer, cx| {
1300 let snapshot = buffer.snapshot(cx);
1301 let autoclose_pair = snapshot.language().and_then(|language| {
1302 let first_selection_start = selections.first().unwrap().start;
1303 let pair = language.brackets().iter().find(|pair| {
1304 snapshot.contains_str_at(
1305 first_selection_start.saturating_sub(pair.start.len()),
1306 &pair.start,
1307 )
1308 });
1309 pair.and_then(|pair| {
1310 let should_autoclose = selections[1..].iter().all(|selection| {
1311 snapshot.contains_str_at(
1312 selection.start.saturating_sub(pair.start.len()),
1313 &pair.start,
1314 )
1315 });
1316
1317 if should_autoclose {
1318 Some(pair.clone())
1319 } else {
1320 None
1321 }
1322 })
1323 });
1324
1325 autoclose_pair.and_then(|pair| {
1326 let selection_ranges = selections
1327 .iter()
1328 .map(|selection| {
1329 let start = selection.start.to_offset(&snapshot);
1330 start..start
1331 })
1332 .collect::<SmallVec<[_; 32]>>();
1333
1334 buffer.edit(selection_ranges, &pair.end, cx);
1335 let snapshot = buffer.snapshot(cx);
1336
1337 if pair.end.len() == 1 {
1338 let mut delta = 0;
1339 Some(BracketPairState {
1340 ranges: selections
1341 .iter()
1342 .map(move |selection| {
1343 let offset = selection.start + delta;
1344 delta += 1;
1345 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1346 })
1347 .collect(),
1348 pair,
1349 })
1350 } else {
1351 None
1352 }
1353 })
1354 });
1355 self.autoclose_stack.extend(new_autoclose_pair);
1356 }
1357
1358 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1359 let old_selections = self.local_selections::<usize>(cx);
1360 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1361 autoclose_pair
1362 } else {
1363 return false;
1364 };
1365 if text != autoclose_pair.pair.end {
1366 return false;
1367 }
1368
1369 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1370
1371 let buffer = self.buffer.read(cx).snapshot(cx);
1372 if old_selections
1373 .iter()
1374 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1375 .all(|(selection, autoclose_range)| {
1376 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1377 selection.is_empty() && selection.start == autoclose_range_end
1378 })
1379 {
1380 let new_selections = old_selections
1381 .into_iter()
1382 .map(|selection| {
1383 let cursor = selection.start + 1;
1384 Selection {
1385 id: selection.id,
1386 start: cursor,
1387 end: cursor,
1388 reversed: false,
1389 goal: SelectionGoal::None,
1390 }
1391 })
1392 .collect();
1393 self.autoclose_stack.pop();
1394 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1395 true
1396 } else {
1397 false
1398 }
1399 }
1400
1401 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1402 self.start_transaction(cx);
1403 self.select_all(&SelectAll, cx);
1404 self.insert("", cx);
1405 self.end_transaction(cx);
1406 }
1407
1408 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1409 self.start_transaction(cx);
1410 let mut selections = self.local_selections::<Point>(cx);
1411 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1412 for selection in &mut selections {
1413 if selection.is_empty() {
1414 let head = selection.head().to_display_point(&display_map);
1415 let cursor = movement::left(&display_map, head)
1416 .unwrap()
1417 .to_point(&display_map);
1418 selection.set_head(cursor);
1419 selection.goal = SelectionGoal::None;
1420 }
1421 }
1422 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1423 self.insert("", cx);
1424 self.end_transaction(cx);
1425 }
1426
1427 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1428 self.start_transaction(cx);
1429 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1430 let mut selections = self.local_selections::<Point>(cx);
1431 for selection in &mut selections {
1432 if selection.is_empty() {
1433 let head = selection.head().to_display_point(&display_map);
1434 let cursor = movement::right(&display_map, head)
1435 .unwrap()
1436 .to_point(&display_map);
1437 selection.set_head(cursor);
1438 selection.goal = SelectionGoal::None;
1439 }
1440 }
1441 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1442 self.insert(&"", cx);
1443 self.end_transaction(cx);
1444 }
1445
1446 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1447 self.start_transaction(cx);
1448 let tab_size = self.build_settings.borrow()(cx).tab_size;
1449 let mut selections = self.local_selections::<Point>(cx);
1450 let mut last_indent = None;
1451 self.buffer.update(cx, |buffer, cx| {
1452 for selection in &mut selections {
1453 if selection.is_empty() {
1454 let char_column = buffer
1455 .read(cx)
1456 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1457 .flat_map(str::chars)
1458 .count();
1459 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1460 buffer.edit(
1461 [selection.start..selection.start],
1462 " ".repeat(chars_to_next_tab_stop),
1463 cx,
1464 );
1465 selection.start.column += chars_to_next_tab_stop as u32;
1466 selection.end = selection.start;
1467 } else {
1468 let mut start_row = selection.start.row;
1469 let mut end_row = selection.end.row + 1;
1470
1471 // If a selection ends at the beginning of a line, don't indent
1472 // that last line.
1473 if selection.end.column == 0 {
1474 end_row -= 1;
1475 }
1476
1477 // Avoid re-indenting a row that has already been indented by a
1478 // previous selection, but still update this selection's column
1479 // to reflect that indentation.
1480 if let Some((last_indent_row, last_indent_len)) = last_indent {
1481 if last_indent_row == selection.start.row {
1482 selection.start.column += last_indent_len;
1483 start_row += 1;
1484 }
1485 if last_indent_row == selection.end.row {
1486 selection.end.column += last_indent_len;
1487 }
1488 }
1489
1490 for row in start_row..end_row {
1491 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1492 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1493 let row_start = Point::new(row, 0);
1494 buffer.edit(
1495 [row_start..row_start],
1496 " ".repeat(columns_to_next_tab_stop),
1497 cx,
1498 );
1499
1500 // Update this selection's endpoints to reflect the indentation.
1501 if row == selection.start.row {
1502 selection.start.column += columns_to_next_tab_stop as u32;
1503 }
1504 if row == selection.end.row {
1505 selection.end.column += columns_to_next_tab_stop as u32;
1506 }
1507
1508 last_indent = Some((row, columns_to_next_tab_stop as u32));
1509 }
1510 }
1511 }
1512 });
1513
1514 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1515 self.end_transaction(cx);
1516 }
1517
1518 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1519 self.start_transaction(cx);
1520 let tab_size = self.build_settings.borrow()(cx).tab_size;
1521 let selections = self.local_selections::<Point>(cx);
1522 let mut deletion_ranges = Vec::new();
1523 let mut last_outdent = None;
1524 {
1525 let buffer = self.buffer.read(cx).read(cx);
1526 for selection in &selections {
1527 let mut start_row = selection.start.row;
1528 let mut end_row = selection.end.row + 1;
1529
1530 // If a selection ends at the beginning of a line, don't indent
1531 // that last line.
1532 if selection.end.column == 0 {
1533 end_row -= 1;
1534 }
1535
1536 // Avoid re-outdenting a row that has already been outdented by a
1537 // previous selection.
1538 if let Some(last_row) = last_outdent {
1539 if last_row == selection.start.row {
1540 start_row += 1;
1541 }
1542 }
1543
1544 for row in start_row..end_row {
1545 let column = buffer.indent_column_for_line(row) as usize;
1546 if column > 0 {
1547 let mut deletion_len = (column % tab_size) as u32;
1548 if deletion_len == 0 {
1549 deletion_len = tab_size as u32;
1550 }
1551 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1552 last_outdent = Some(row);
1553 }
1554 }
1555 }
1556 }
1557 self.buffer.update(cx, |buffer, cx| {
1558 buffer.edit(deletion_ranges, "", cx);
1559 });
1560
1561 self.update_selections(
1562 self.local_selections::<usize>(cx),
1563 Some(Autoscroll::Fit),
1564 cx,
1565 );
1566 self.end_transaction(cx);
1567 }
1568
1569 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1570 self.start_transaction(cx);
1571
1572 let selections = self.local_selections::<Point>(cx);
1573 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1574 let buffer = self.buffer.read(cx).snapshot(cx);
1575
1576 let mut row_delta = 0;
1577 let mut new_cursors = Vec::new();
1578 let mut edit_ranges = Vec::new();
1579 let mut selections = selections.iter().peekable();
1580 while let Some(selection) = selections.next() {
1581 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1582 let goal_display_column = selection.head().to_display_point(&display_map).column();
1583
1584 // Accumulate contiguous regions of rows that we want to delete.
1585 while let Some(next_selection) = selections.peek() {
1586 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1587 if next_rows.start <= rows.end {
1588 rows.end = next_rows.end;
1589 selections.next().unwrap();
1590 } else {
1591 break;
1592 }
1593 }
1594
1595 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1596 let edit_end;
1597 let cursor_buffer_row;
1598 if buffer.max_point().row >= rows.end {
1599 // If there's a line after the range, delete the \n from the end of the row range
1600 // and position the cursor on the next line.
1601 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1602 cursor_buffer_row = rows.start;
1603 } else {
1604 // If there isn't a line after the range, delete the \n from the line before the
1605 // start of the row range and position the cursor there.
1606 edit_start = edit_start.saturating_sub(1);
1607 edit_end = buffer.len();
1608 cursor_buffer_row = rows.start.saturating_sub(1);
1609 }
1610
1611 let mut cursor =
1612 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1613 *cursor.column_mut() =
1614 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1615 row_delta += rows.len() as u32;
1616
1617 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1618 edit_ranges.push(edit_start..edit_end);
1619 }
1620
1621 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1622 let new_selections = new_cursors
1623 .into_iter()
1624 .map(|(id, cursor)| Selection {
1625 id,
1626 start: cursor,
1627 end: cursor,
1628 reversed: false,
1629 goal: SelectionGoal::None,
1630 })
1631 .collect();
1632 self.buffer
1633 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1634 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1635 self.end_transaction(cx);
1636 }
1637
1638 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1639 self.start_transaction(cx);
1640
1641 let mut selections = self.local_selections::<Point>(cx);
1642 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1643 let buffer = &display_map.buffer_snapshot;
1644
1645 let mut edits = Vec::new();
1646 let mut selections_iter = selections.iter().peekable();
1647 while let Some(selection) = selections_iter.next() {
1648 // Avoid duplicating the same lines twice.
1649 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1650
1651 while let Some(next_selection) = selections_iter.peek() {
1652 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1653 if next_rows.start <= rows.end - 1 {
1654 rows.end = next_rows.end;
1655 selections_iter.next().unwrap();
1656 } else {
1657 break;
1658 }
1659 }
1660
1661 // Copy the text from the selected row region and splice it at the start of the region.
1662 let start = Point::new(rows.start, 0);
1663 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1664 let text = buffer
1665 .text_for_range(start..end)
1666 .chain(Some("\n"))
1667 .collect::<String>();
1668 edits.push((start, text, rows.len() as u32));
1669 }
1670
1671 let mut edits_iter = edits.iter().peekable();
1672 let mut row_delta = 0;
1673 for selection in selections.iter_mut() {
1674 while let Some((point, _, line_count)) = edits_iter.peek() {
1675 if *point <= selection.start {
1676 row_delta += line_count;
1677 edits_iter.next();
1678 } else {
1679 break;
1680 }
1681 }
1682 selection.start.row += row_delta;
1683 selection.end.row += row_delta;
1684 }
1685
1686 self.buffer.update(cx, |buffer, cx| {
1687 for (point, text, _) in edits.into_iter().rev() {
1688 buffer.edit(Some(point..point), text, cx);
1689 }
1690 });
1691
1692 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1693 self.end_transaction(cx);
1694 }
1695
1696 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1697 self.start_transaction(cx);
1698
1699 let selections = self.local_selections::<Point>(cx);
1700 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1701 let buffer = self.buffer.read(cx).snapshot(cx);
1702
1703 let mut edits = Vec::new();
1704 let mut new_selection_ranges = Vec::new();
1705 let mut old_folds = Vec::new();
1706 let mut new_folds = Vec::new();
1707
1708 let mut selections = selections.iter().peekable();
1709 let mut contiguous_selections = Vec::new();
1710 while let Some(selection) = selections.next() {
1711 // Accumulate contiguous regions of rows that we want to move.
1712 contiguous_selections.push(selection.point_range(&buffer));
1713 let SpannedRows {
1714 mut buffer_rows,
1715 mut display_rows,
1716 } = selection.spanned_rows(false, &display_map);
1717
1718 while let Some(next_selection) = selections.peek() {
1719 let SpannedRows {
1720 buffer_rows: next_buffer_rows,
1721 display_rows: next_display_rows,
1722 } = next_selection.spanned_rows(false, &display_map);
1723 if next_buffer_rows.start <= buffer_rows.end {
1724 buffer_rows.end = next_buffer_rows.end;
1725 display_rows.end = next_display_rows.end;
1726 contiguous_selections.push(next_selection.point_range(&buffer));
1727 selections.next().unwrap();
1728 } else {
1729 break;
1730 }
1731 }
1732
1733 // Cut the text from the selected rows and paste it at the start of the previous line.
1734 if display_rows.start != 0 {
1735 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1736 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1737 .to_offset(&buffer);
1738
1739 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1740 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1741 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(&buffer);
1742
1743 let mut text = String::new();
1744 text.extend(buffer.text_for_range(start..end));
1745 text.push('\n');
1746 edits.push((
1747 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1748 text,
1749 ));
1750 edits.push((start - 1..end, String::new()));
1751
1752 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1753
1754 // Move selections up.
1755 for range in &mut contiguous_selections {
1756 range.start.row -= row_delta;
1757 range.end.row -= row_delta;
1758 }
1759
1760 // Move folds up.
1761 old_folds.push(start..end);
1762 for fold in display_map.folds_in_range(start..end) {
1763 let mut start = fold.start.to_point(&buffer);
1764 let mut end = fold.end.to_point(&buffer);
1765 start.row -= row_delta;
1766 end.row -= row_delta;
1767 new_folds.push(start..end);
1768 }
1769 }
1770
1771 new_selection_ranges.extend(contiguous_selections.drain(..));
1772 }
1773
1774 self.unfold_ranges(old_folds, cx);
1775 self.buffer.update(cx, |buffer, cx| {
1776 for (range, text) in edits.into_iter().rev() {
1777 buffer.edit(Some(range), text, cx);
1778 }
1779 });
1780 self.fold_ranges(new_folds, cx);
1781 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1782
1783 self.end_transaction(cx);
1784 }
1785
1786 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1787 self.start_transaction(cx);
1788
1789 let selections = self.local_selections::<Point>(cx);
1790 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1791 let buffer = self.buffer.read(cx).snapshot(cx);
1792
1793 let mut edits = Vec::new();
1794 let mut new_selection_ranges = Vec::new();
1795 let mut old_folds = Vec::new();
1796 let mut new_folds = Vec::new();
1797
1798 let mut selections = selections.iter().peekable();
1799 let mut contiguous_selections = Vec::new();
1800 while let Some(selection) = selections.next() {
1801 // Accumulate contiguous regions of rows that we want to move.
1802 contiguous_selections.push(selection.point_range(&buffer));
1803 let SpannedRows {
1804 mut buffer_rows,
1805 mut display_rows,
1806 } = selection.spanned_rows(false, &display_map);
1807 while let Some(next_selection) = selections.peek() {
1808 let SpannedRows {
1809 buffer_rows: next_buffer_rows,
1810 display_rows: next_display_rows,
1811 } = next_selection.spanned_rows(false, &display_map);
1812 if next_buffer_rows.start <= buffer_rows.end {
1813 buffer_rows.end = next_buffer_rows.end;
1814 display_rows.end = next_display_rows.end;
1815 contiguous_selections.push(next_selection.point_range(&buffer));
1816 selections.next().unwrap();
1817 } else {
1818 break;
1819 }
1820 }
1821
1822 // Cut the text from the selected rows and paste it at the end of the next line.
1823 if display_rows.end <= display_map.max_point().row() {
1824 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1825 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1826 .to_offset(&buffer);
1827
1828 let next_row_display_end =
1829 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1830 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1831 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(&buffer);
1832
1833 let mut text = String::new();
1834 text.push('\n');
1835 text.extend(buffer.text_for_range(start..end));
1836 edits.push((start..end + 1, String::new()));
1837 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1838
1839 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1840
1841 // Move selections down.
1842 for range in &mut contiguous_selections {
1843 range.start.row += row_delta;
1844 range.end.row += row_delta;
1845 }
1846
1847 // Move folds down.
1848 old_folds.push(start..end);
1849 for fold in display_map.folds_in_range(start..end) {
1850 let mut start = fold.start.to_point(&buffer);
1851 let mut end = fold.end.to_point(&buffer);
1852 start.row += row_delta;
1853 end.row += row_delta;
1854 new_folds.push(start..end);
1855 }
1856 }
1857
1858 new_selection_ranges.extend(contiguous_selections.drain(..));
1859 }
1860
1861 self.unfold_ranges(old_folds, cx);
1862 self.buffer.update(cx, |buffer, cx| {
1863 for (range, text) in edits.into_iter().rev() {
1864 buffer.edit(Some(range), text, cx);
1865 }
1866 });
1867 self.fold_ranges(new_folds, cx);
1868 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1869
1870 self.end_transaction(cx);
1871 }
1872
1873 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1874 self.start_transaction(cx);
1875 let mut text = String::new();
1876 let mut selections = self.local_selections::<Point>(cx);
1877 let mut clipboard_selections = Vec::with_capacity(selections.len());
1878 {
1879 let buffer = self.buffer.read(cx).read(cx);
1880 let max_point = buffer.max_point();
1881 for selection in &mut selections {
1882 let is_entire_line = selection.is_empty();
1883 if is_entire_line {
1884 selection.start = Point::new(selection.start.row, 0);
1885 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1886 }
1887 let mut len = 0;
1888 for chunk in buffer.text_for_range(selection.start..selection.end) {
1889 text.push_str(chunk);
1890 len += chunk.len();
1891 }
1892 clipboard_selections.push(ClipboardSelection {
1893 len,
1894 is_entire_line,
1895 });
1896 }
1897 }
1898 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1899 self.insert("", cx);
1900 self.end_transaction(cx);
1901
1902 cx.as_mut()
1903 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1904 }
1905
1906 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1907 let selections = self.local_selections::<Point>(cx);
1908 let mut text = String::new();
1909 let mut clipboard_selections = Vec::with_capacity(selections.len());
1910 {
1911 let buffer = self.buffer.read(cx).read(cx);
1912 let max_point = buffer.max_point();
1913 for selection in selections.iter() {
1914 let mut start = selection.start;
1915 let mut end = selection.end;
1916 let is_entire_line = selection.is_empty();
1917 if is_entire_line {
1918 start = Point::new(start.row, 0);
1919 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1920 }
1921 let mut len = 0;
1922 for chunk in buffer.text_for_range(start..end) {
1923 text.push_str(chunk);
1924 len += chunk.len();
1925 }
1926 clipboard_selections.push(ClipboardSelection {
1927 len,
1928 is_entire_line,
1929 });
1930 }
1931 }
1932
1933 cx.as_mut()
1934 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1935 }
1936
1937 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1938 if let Some(item) = cx.as_mut().read_from_clipboard() {
1939 let clipboard_text = item.text();
1940 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1941 let mut selections = self.local_selections::<usize>(cx);
1942 let all_selections_were_entire_line =
1943 clipboard_selections.iter().all(|s| s.is_entire_line);
1944 if clipboard_selections.len() != selections.len() {
1945 clipboard_selections.clear();
1946 }
1947
1948 let mut delta = 0_isize;
1949 let mut start_offset = 0;
1950 for (i, selection) in selections.iter_mut().enumerate() {
1951 let to_insert;
1952 let entire_line;
1953 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1954 let end_offset = start_offset + clipboard_selection.len;
1955 to_insert = &clipboard_text[start_offset..end_offset];
1956 entire_line = clipboard_selection.is_entire_line;
1957 start_offset = end_offset
1958 } else {
1959 to_insert = clipboard_text.as_str();
1960 entire_line = all_selections_were_entire_line;
1961 }
1962
1963 selection.start = (selection.start as isize + delta) as usize;
1964 selection.end = (selection.end as isize + delta) as usize;
1965
1966 self.buffer.update(cx, |buffer, cx| {
1967 // If the corresponding selection was empty when this slice of the
1968 // clipboard text was written, then the entire line containing the
1969 // selection was copied. If this selection is also currently empty,
1970 // then paste the line before the current line of the buffer.
1971 let range = if selection.is_empty() && entire_line {
1972 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1973 let line_start = selection.start - column;
1974 line_start..line_start
1975 } else {
1976 selection.start..selection.end
1977 };
1978
1979 delta += to_insert.len() as isize - range.len() as isize;
1980 buffer.edit([range], to_insert, cx);
1981 selection.start += to_insert.len();
1982 selection.end = selection.start;
1983 });
1984 }
1985 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1986 } else {
1987 self.insert(clipboard_text, cx);
1988 }
1989 }
1990 }
1991
1992 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1993 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
1994 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
1995 self.set_selections(selections, cx);
1996 }
1997 self.request_autoscroll(Autoscroll::Fit, cx);
1998 }
1999 }
2000
2001 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2002 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2003 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2004 self.set_selections(selections, cx);
2005 }
2006 self.request_autoscroll(Autoscroll::Fit, cx);
2007 }
2008 }
2009
2010 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2011 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2012 let mut selections = self.local_selections::<Point>(cx);
2013 for selection in &mut selections {
2014 let start = selection.start.to_display_point(&display_map);
2015 let end = selection.end.to_display_point(&display_map);
2016
2017 if start != end {
2018 selection.end = selection.start.clone();
2019 } else {
2020 let cursor = movement::left(&display_map, start)
2021 .unwrap()
2022 .to_point(&display_map);
2023 selection.start = cursor.clone();
2024 selection.end = cursor;
2025 }
2026 selection.reversed = false;
2027 selection.goal = SelectionGoal::None;
2028 }
2029 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2030 }
2031
2032 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2033 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2034 let mut selections = self.local_selections::<Point>(cx);
2035 for selection in &mut selections {
2036 let head = selection.head().to_display_point(&display_map);
2037 let cursor = movement::left(&display_map, head)
2038 .unwrap()
2039 .to_point(&display_map);
2040 selection.set_head(cursor);
2041 selection.goal = SelectionGoal::None;
2042 }
2043 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2044 }
2045
2046 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2047 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2048 let mut selections = self.local_selections::<Point>(cx);
2049 for selection in &mut selections {
2050 let start = selection.start.to_display_point(&display_map);
2051 let end = selection.end.to_display_point(&display_map);
2052
2053 if start != end {
2054 selection.start = selection.end.clone();
2055 } else {
2056 let cursor = movement::right(&display_map, end)
2057 .unwrap()
2058 .to_point(&display_map);
2059 selection.start = cursor;
2060 selection.end = cursor;
2061 }
2062 selection.reversed = false;
2063 selection.goal = SelectionGoal::None;
2064 }
2065 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2066 }
2067
2068 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2069 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2070 let mut selections = self.local_selections::<Point>(cx);
2071 for selection in &mut selections {
2072 let head = selection.head().to_display_point(&display_map);
2073 let cursor = movement::right(&display_map, head)
2074 .unwrap()
2075 .to_point(&display_map);
2076 selection.set_head(cursor);
2077 selection.goal = SelectionGoal::None;
2078 }
2079 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2080 }
2081
2082 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2083 if matches!(self.mode, EditorMode::SingleLine) {
2084 cx.propagate_action();
2085 return;
2086 }
2087
2088 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2089 let mut selections = self.local_selections::<Point>(cx);
2090 for selection in &mut selections {
2091 let start = selection.start.to_display_point(&display_map);
2092 let end = selection.end.to_display_point(&display_map);
2093 if start != end {
2094 selection.goal = SelectionGoal::None;
2095 }
2096
2097 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2098 let cursor = start.to_point(&display_map);
2099 selection.start = cursor;
2100 selection.end = cursor;
2101 selection.goal = goal;
2102 selection.reversed = false;
2103 }
2104 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2105 }
2106
2107 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2108 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2109 let mut selections = self.local_selections::<Point>(cx);
2110 for selection in &mut selections {
2111 let head = selection.head().to_display_point(&display_map);
2112 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2113 let cursor = head.to_point(&display_map);
2114 selection.set_head(cursor);
2115 selection.goal = goal;
2116 }
2117 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2118 }
2119
2120 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2121 if matches!(self.mode, EditorMode::SingleLine) {
2122 cx.propagate_action();
2123 return;
2124 }
2125
2126 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2127 let mut selections = self.local_selections::<Point>(cx);
2128 for selection in &mut selections {
2129 let start = selection.start.to_display_point(&display_map);
2130 let end = selection.end.to_display_point(&display_map);
2131 if start != end {
2132 selection.goal = SelectionGoal::None;
2133 }
2134
2135 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2136 let cursor = start.to_point(&display_map);
2137 selection.start = cursor;
2138 selection.end = cursor;
2139 selection.goal = goal;
2140 selection.reversed = false;
2141 }
2142 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2143 }
2144
2145 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2146 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2147 let mut selections = self.local_selections::<Point>(cx);
2148 for selection in &mut selections {
2149 let head = selection.head().to_display_point(&display_map);
2150 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2151 let cursor = head.to_point(&display_map);
2152 selection.set_head(cursor);
2153 selection.goal = goal;
2154 }
2155 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2156 }
2157
2158 pub fn move_to_previous_word_boundary(
2159 &mut self,
2160 _: &MoveToPreviousWordBoundary,
2161 cx: &mut ViewContext<Self>,
2162 ) {
2163 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2164 let mut selections = self.local_selections::<Point>(cx);
2165 for selection in &mut selections {
2166 let head = selection.head().to_display_point(&display_map);
2167 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2168 selection.start = cursor.clone();
2169 selection.end = cursor;
2170 selection.reversed = false;
2171 selection.goal = SelectionGoal::None;
2172 }
2173 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2174 }
2175
2176 pub fn select_to_previous_word_boundary(
2177 &mut self,
2178 _: &SelectToPreviousWordBoundary,
2179 cx: &mut ViewContext<Self>,
2180 ) {
2181 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2182 let mut selections = self.local_selections::<Point>(cx);
2183 for selection in &mut selections {
2184 let head = selection.head().to_display_point(&display_map);
2185 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2186 selection.set_head(cursor);
2187 selection.goal = SelectionGoal::None;
2188 }
2189 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2190 }
2191
2192 pub fn delete_to_previous_word_boundary(
2193 &mut self,
2194 _: &DeleteToPreviousWordBoundary,
2195 cx: &mut ViewContext<Self>,
2196 ) {
2197 self.start_transaction(cx);
2198 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2199 let mut selections = self.local_selections::<Point>(cx);
2200 for selection in &mut selections {
2201 if selection.is_empty() {
2202 let head = selection.head().to_display_point(&display_map);
2203 let cursor =
2204 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2205 selection.set_head(cursor);
2206 selection.goal = SelectionGoal::None;
2207 }
2208 }
2209 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2210 self.insert("", cx);
2211 self.end_transaction(cx);
2212 }
2213
2214 pub fn move_to_next_word_boundary(
2215 &mut self,
2216 _: &MoveToNextWordBoundary,
2217 cx: &mut ViewContext<Self>,
2218 ) {
2219 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2220 let mut selections = self.local_selections::<Point>(cx);
2221 for selection in &mut selections {
2222 let head = selection.head().to_display_point(&display_map);
2223 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2224 selection.start = cursor;
2225 selection.end = cursor;
2226 selection.reversed = false;
2227 selection.goal = SelectionGoal::None;
2228 }
2229 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2230 }
2231
2232 pub fn select_to_next_word_boundary(
2233 &mut self,
2234 _: &SelectToNextWordBoundary,
2235 cx: &mut ViewContext<Self>,
2236 ) {
2237 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2238 let mut selections = self.local_selections::<Point>(cx);
2239 for selection in &mut selections {
2240 let head = selection.head().to_display_point(&display_map);
2241 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2242 selection.set_head(cursor);
2243 selection.goal = SelectionGoal::None;
2244 }
2245 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2246 }
2247
2248 pub fn delete_to_next_word_boundary(
2249 &mut self,
2250 _: &DeleteToNextWordBoundary,
2251 cx: &mut ViewContext<Self>,
2252 ) {
2253 self.start_transaction(cx);
2254 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2255 let mut selections = self.local_selections::<Point>(cx);
2256 for selection in &mut selections {
2257 if selection.is_empty() {
2258 let head = selection.head().to_display_point(&display_map);
2259 let cursor =
2260 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2261 selection.set_head(cursor);
2262 selection.goal = SelectionGoal::None;
2263 }
2264 }
2265 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2266 self.insert("", cx);
2267 self.end_transaction(cx);
2268 }
2269
2270 pub fn move_to_beginning_of_line(
2271 &mut self,
2272 _: &MoveToBeginningOfLine,
2273 cx: &mut ViewContext<Self>,
2274 ) {
2275 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2276 let mut selections = self.local_selections::<Point>(cx);
2277 for selection in &mut selections {
2278 let head = selection.head().to_display_point(&display_map);
2279 let new_head = movement::line_beginning(&display_map, head, true);
2280 let cursor = new_head.to_point(&display_map);
2281 selection.start = cursor;
2282 selection.end = cursor;
2283 selection.reversed = false;
2284 selection.goal = SelectionGoal::None;
2285 }
2286 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2287 }
2288
2289 pub fn select_to_beginning_of_line(
2290 &mut self,
2291 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2292 cx: &mut ViewContext<Self>,
2293 ) {
2294 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2295 let mut selections = self.local_selections::<Point>(cx);
2296 for selection in &mut selections {
2297 let head = selection.head().to_display_point(&display_map);
2298 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2299 selection.set_head(new_head.to_point(&display_map));
2300 selection.goal = SelectionGoal::None;
2301 }
2302 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2303 }
2304
2305 pub fn delete_to_beginning_of_line(
2306 &mut self,
2307 _: &DeleteToBeginningOfLine,
2308 cx: &mut ViewContext<Self>,
2309 ) {
2310 self.start_transaction(cx);
2311 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2312 self.backspace(&Backspace, cx);
2313 self.end_transaction(cx);
2314 }
2315
2316 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2317 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2318 let mut selections = self.local_selections::<Point>(cx);
2319 {
2320 for selection in &mut selections {
2321 let head = selection.head().to_display_point(&display_map);
2322 let new_head = movement::line_end(&display_map, head);
2323 let anchor = new_head.to_point(&display_map);
2324 selection.start = anchor.clone();
2325 selection.end = anchor;
2326 selection.reversed = false;
2327 selection.goal = SelectionGoal::None;
2328 }
2329 }
2330 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2331 }
2332
2333 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2334 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2335 let mut selections = self.local_selections::<Point>(cx);
2336 for selection in &mut selections {
2337 let head = selection.head().to_display_point(&display_map);
2338 let new_head = movement::line_end(&display_map, head);
2339 selection.set_head(new_head.to_point(&display_map));
2340 selection.goal = SelectionGoal::None;
2341 }
2342 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2343 }
2344
2345 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2346 self.start_transaction(cx);
2347 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2348 self.delete(&Delete, cx);
2349 self.end_transaction(cx);
2350 }
2351
2352 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2353 self.start_transaction(cx);
2354 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2355 self.cut(&Cut, cx);
2356 self.end_transaction(cx);
2357 }
2358
2359 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2360 let selection = Selection {
2361 id: post_inc(&mut self.next_selection_id),
2362 start: 0,
2363 end: 0,
2364 reversed: false,
2365 goal: SelectionGoal::None,
2366 };
2367 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2368 }
2369
2370 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2371 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2372 selection.set_head(Point::zero());
2373 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2374 }
2375
2376 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2377 let cursor = self.buffer.read(cx).read(cx).len();
2378 let selection = Selection {
2379 id: post_inc(&mut self.next_selection_id),
2380 start: cursor,
2381 end: cursor,
2382 reversed: false,
2383 goal: SelectionGoal::None,
2384 };
2385 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2386 }
2387
2388 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2389 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2390 selection.set_head(self.buffer.read(cx).read(cx).len());
2391 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2392 }
2393
2394 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2395 let selection = Selection {
2396 id: post_inc(&mut self.next_selection_id),
2397 start: 0,
2398 end: self.buffer.read(cx).read(cx).len(),
2399 reversed: false,
2400 goal: SelectionGoal::None,
2401 };
2402 self.update_selections(vec![selection], None, cx);
2403 }
2404
2405 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2406 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2407 let mut selections = self.local_selections::<Point>(cx);
2408 let max_point = display_map.buffer_snapshot.max_point();
2409 for selection in &mut selections {
2410 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2411 selection.start = Point::new(rows.start, 0);
2412 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2413 selection.reversed = false;
2414 }
2415 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2416 }
2417
2418 pub fn split_selection_into_lines(
2419 &mut self,
2420 _: &SplitSelectionIntoLines,
2421 cx: &mut ViewContext<Self>,
2422 ) {
2423 let mut to_unfold = Vec::new();
2424 let mut new_selections = Vec::new();
2425 {
2426 let selections = self.local_selections::<Point>(cx);
2427 let buffer = self.buffer.read(cx).read(cx);
2428 for selection in selections {
2429 for row in selection.start.row..selection.end.row {
2430 let cursor = Point::new(row, buffer.line_len(row));
2431 new_selections.push(Selection {
2432 id: post_inc(&mut self.next_selection_id),
2433 start: cursor,
2434 end: cursor,
2435 reversed: false,
2436 goal: SelectionGoal::None,
2437 });
2438 }
2439 new_selections.push(Selection {
2440 id: selection.id,
2441 start: selection.end,
2442 end: selection.end,
2443 reversed: false,
2444 goal: SelectionGoal::None,
2445 });
2446 to_unfold.push(selection.start..selection.end);
2447 }
2448 }
2449 self.unfold_ranges(to_unfold, cx);
2450 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2451 }
2452
2453 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2454 self.add_selection(true, cx);
2455 }
2456
2457 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2458 self.add_selection(false, cx);
2459 }
2460
2461 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2462 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2463 let mut selections = self.local_selections::<Point>(cx);
2464 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2465 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2466 let range = oldest_selection.display_range(&display_map).sorted();
2467 let columns = cmp::min(range.start.column(), range.end.column())
2468 ..cmp::max(range.start.column(), range.end.column());
2469
2470 selections.clear();
2471 let mut stack = Vec::new();
2472 for row in range.start.row()..=range.end.row() {
2473 if let Some(selection) = self.build_columnar_selection(
2474 &display_map,
2475 row,
2476 &columns,
2477 oldest_selection.reversed,
2478 ) {
2479 stack.push(selection.id);
2480 selections.push(selection);
2481 }
2482 }
2483
2484 if above {
2485 stack.reverse();
2486 }
2487
2488 AddSelectionsState { above, stack }
2489 });
2490
2491 let last_added_selection = *state.stack.last().unwrap();
2492 let mut new_selections = Vec::new();
2493 if above == state.above {
2494 let end_row = if above {
2495 0
2496 } else {
2497 display_map.max_point().row()
2498 };
2499
2500 'outer: for selection in selections {
2501 if selection.id == last_added_selection {
2502 let range = selection.display_range(&display_map).sorted();
2503 debug_assert_eq!(range.start.row(), range.end.row());
2504 let mut row = range.start.row();
2505 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2506 {
2507 start..end
2508 } else {
2509 cmp::min(range.start.column(), range.end.column())
2510 ..cmp::max(range.start.column(), range.end.column())
2511 };
2512
2513 while row != end_row {
2514 if above {
2515 row -= 1;
2516 } else {
2517 row += 1;
2518 }
2519
2520 if let Some(new_selection) = self.build_columnar_selection(
2521 &display_map,
2522 row,
2523 &columns,
2524 selection.reversed,
2525 ) {
2526 state.stack.push(new_selection.id);
2527 if above {
2528 new_selections.push(new_selection);
2529 new_selections.push(selection);
2530 } else {
2531 new_selections.push(selection);
2532 new_selections.push(new_selection);
2533 }
2534
2535 continue 'outer;
2536 }
2537 }
2538 }
2539
2540 new_selections.push(selection);
2541 }
2542 } else {
2543 new_selections = selections;
2544 new_selections.retain(|s| s.id != last_added_selection);
2545 state.stack.pop();
2546 }
2547
2548 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2549 if state.stack.len() > 1 {
2550 self.add_selections_state = Some(state);
2551 }
2552 }
2553
2554 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2555 let replace_newest = action.0;
2556 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2557 let buffer = &display_map.buffer_snapshot;
2558 let mut selections = self.local_selections::<usize>(cx);
2559 if let Some(mut select_next_state) = self.select_next_state.take() {
2560 let query = &select_next_state.query;
2561 if !select_next_state.done {
2562 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2563 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2564 let mut next_selected_range = None;
2565
2566 let bytes_after_last_selection =
2567 buffer.bytes_in_range(last_selection.end..buffer.len());
2568 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2569 let query_matches = query
2570 .stream_find_iter(bytes_after_last_selection)
2571 .map(|result| (last_selection.end, result))
2572 .chain(
2573 query
2574 .stream_find_iter(bytes_before_first_selection)
2575 .map(|result| (0, result)),
2576 );
2577 for (start_offset, query_match) in query_matches {
2578 let query_match = query_match.unwrap(); // can only fail due to I/O
2579 let offset_range =
2580 start_offset + query_match.start()..start_offset + query_match.end();
2581 let display_range = offset_range.start.to_display_point(&display_map)
2582 ..offset_range.end.to_display_point(&display_map);
2583
2584 if !select_next_state.wordwise
2585 || (!movement::is_inside_word(&display_map, display_range.start)
2586 && !movement::is_inside_word(&display_map, display_range.end))
2587 {
2588 next_selected_range = Some(offset_range);
2589 break;
2590 }
2591 }
2592
2593 if let Some(next_selected_range) = next_selected_range {
2594 if replace_newest {
2595 if let Some(newest_id) =
2596 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2597 {
2598 selections.retain(|s| s.id != newest_id);
2599 }
2600 }
2601 selections.push(Selection {
2602 id: post_inc(&mut self.next_selection_id),
2603 start: next_selected_range.start,
2604 end: next_selected_range.end,
2605 reversed: false,
2606 goal: SelectionGoal::None,
2607 });
2608 selections.sort_unstable_by_key(|s| s.start);
2609 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2610 } else {
2611 select_next_state.done = true;
2612 }
2613 }
2614
2615 self.select_next_state = Some(select_next_state);
2616 } else if selections.len() == 1 {
2617 let selection = selections.last_mut().unwrap();
2618 if selection.start == selection.end {
2619 let word_range = movement::surrounding_word(
2620 &display_map,
2621 selection.start.to_display_point(&display_map),
2622 );
2623 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2624 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2625 selection.goal = SelectionGoal::None;
2626 selection.reversed = false;
2627
2628 let query = buffer
2629 .text_for_range(selection.start..selection.end)
2630 .collect::<String>();
2631 let select_state = SelectNextState {
2632 query: AhoCorasick::new_auto_configured(&[query]),
2633 wordwise: true,
2634 done: false,
2635 };
2636 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2637 self.select_next_state = Some(select_state);
2638 } else {
2639 let query = buffer
2640 .text_for_range(selection.start..selection.end)
2641 .collect::<String>();
2642 self.select_next_state = Some(SelectNextState {
2643 query: AhoCorasick::new_auto_configured(&[query]),
2644 wordwise: false,
2645 done: false,
2646 });
2647 self.select_next(action, cx);
2648 }
2649 }
2650 }
2651
2652 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2653 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2654 // as that portion won't be used for detecting if a line is a comment.
2655 let full_comment_prefix =
2656 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2657 prefix.to_string()
2658 } else {
2659 return;
2660 };
2661 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2662 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2663
2664 self.start_transaction(cx);
2665 let mut selections = self.local_selections::<Point>(cx);
2666 let mut all_selection_lines_are_comments = true;
2667 let mut edit_ranges = Vec::new();
2668 let mut last_toggled_row = None;
2669 self.buffer.update(cx, |buffer, cx| {
2670 for selection in &mut selections {
2671 edit_ranges.clear();
2672 let snapshot = buffer.snapshot(cx);
2673
2674 let end_row =
2675 if selection.end.row > selection.start.row && selection.end.column == 0 {
2676 selection.end.row
2677 } else {
2678 selection.end.row + 1
2679 };
2680
2681 for row in selection.start.row..end_row {
2682 // If multiple selections contain a given row, avoid processing that
2683 // row more than once.
2684 if last_toggled_row == Some(row) {
2685 continue;
2686 } else {
2687 last_toggled_row = Some(row);
2688 }
2689
2690 if snapshot.is_line_blank(row) {
2691 continue;
2692 }
2693
2694 let start = Point::new(row, snapshot.indent_column_for_line(row));
2695 let mut line_bytes = snapshot
2696 .bytes_in_range(start..snapshot.max_point())
2697 .flatten()
2698 .copied();
2699
2700 // If this line currently begins with the line comment prefix, then record
2701 // the range containing the prefix.
2702 if all_selection_lines_are_comments
2703 && line_bytes
2704 .by_ref()
2705 .take(comment_prefix.len())
2706 .eq(comment_prefix.bytes())
2707 {
2708 // Include any whitespace that matches the comment prefix.
2709 let matching_whitespace_len = line_bytes
2710 .zip(comment_prefix_whitespace.bytes())
2711 .take_while(|(a, b)| a == b)
2712 .count() as u32;
2713 let end = Point::new(
2714 row,
2715 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2716 );
2717 edit_ranges.push(start..end);
2718 }
2719 // If this line does not begin with the line comment prefix, then record
2720 // the position where the prefix should be inserted.
2721 else {
2722 all_selection_lines_are_comments = false;
2723 edit_ranges.push(start..start);
2724 }
2725 }
2726
2727 if !edit_ranges.is_empty() {
2728 if all_selection_lines_are_comments {
2729 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2730 } else {
2731 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2732 let edit_ranges = edit_ranges.iter().map(|range| {
2733 let position = Point::new(range.start.row, min_column);
2734 position..position
2735 });
2736 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2737 }
2738 }
2739 }
2740 });
2741
2742 self.update_selections(
2743 self.local_selections::<usize>(cx),
2744 Some(Autoscroll::Fit),
2745 cx,
2746 );
2747 self.end_transaction(cx);
2748 }
2749
2750 pub fn select_larger_syntax_node(
2751 &mut self,
2752 _: &SelectLargerSyntaxNode,
2753 cx: &mut ViewContext<Self>,
2754 ) {
2755 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2756 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2757 let buffer = self.buffer.read(cx).snapshot(cx);
2758
2759 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2760 let mut selected_larger_node = false;
2761 let mut new_selections = old_selections
2762 .iter()
2763 .map(|selection| {
2764 let old_range = selection.start..selection.end;
2765 let mut new_range = old_range.clone();
2766 while let Some(containing_range) =
2767 buffer.range_for_syntax_ancestor(new_range.clone())
2768 {
2769 new_range = containing_range;
2770 if !display_map.intersects_fold(new_range.start)
2771 && !display_map.intersects_fold(new_range.end)
2772 {
2773 break;
2774 }
2775 }
2776
2777 selected_larger_node |= new_range != old_range;
2778 Selection {
2779 id: selection.id,
2780 start: new_range.start,
2781 end: new_range.end,
2782 goal: SelectionGoal::None,
2783 reversed: selection.reversed,
2784 }
2785 })
2786 .collect::<Vec<_>>();
2787
2788 if selected_larger_node {
2789 stack.push(old_selections);
2790 new_selections.sort_unstable_by_key(|selection| selection.start);
2791 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2792 }
2793 self.select_larger_syntax_node_stack = stack;
2794 }
2795
2796 pub fn select_smaller_syntax_node(
2797 &mut self,
2798 _: &SelectSmallerSyntaxNode,
2799 cx: &mut ViewContext<Self>,
2800 ) {
2801 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2802 if let Some(selections) = stack.pop() {
2803 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2804 }
2805 self.select_larger_syntax_node_stack = stack;
2806 }
2807
2808 pub fn move_to_enclosing_bracket(
2809 &mut self,
2810 _: &MoveToEnclosingBracket,
2811 cx: &mut ViewContext<Self>,
2812 ) {
2813 let mut selections = self.local_selections::<usize>(cx);
2814 let buffer = self.buffer.read(cx).snapshot(cx);
2815 for selection in &mut selections {
2816 if let Some((open_range, close_range)) =
2817 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2818 {
2819 let close_range = close_range.to_inclusive();
2820 let destination = if close_range.contains(&selection.start)
2821 && close_range.contains(&selection.end)
2822 {
2823 open_range.end
2824 } else {
2825 *close_range.start()
2826 };
2827 selection.start = destination;
2828 selection.end = destination;
2829 }
2830 }
2831
2832 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2833 }
2834
2835 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2836 let buffer = self.buffer.read(cx).snapshot(cx);
2837 let selection = self.newest_selection::<usize>(&buffer);
2838 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2839 active_diagnostics
2840 .primary_range
2841 .to_offset(&buffer)
2842 .to_inclusive()
2843 });
2844 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2845 if active_primary_range.contains(&selection.head()) {
2846 *active_primary_range.end()
2847 } else {
2848 selection.head()
2849 }
2850 } else {
2851 selection.head()
2852 };
2853
2854 loop {
2855 let next_group = buffer
2856 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2857 .find_map(|entry| {
2858 if entry.diagnostic.is_primary
2859 && !entry.range.is_empty()
2860 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2861 {
2862 Some((entry.range, entry.diagnostic.group_id))
2863 } else {
2864 None
2865 }
2866 });
2867
2868 if let Some((primary_range, group_id)) = next_group {
2869 self.activate_diagnostics(group_id, cx);
2870 self.update_selections(
2871 vec![Selection {
2872 id: selection.id,
2873 start: primary_range.start,
2874 end: primary_range.start,
2875 reversed: false,
2876 goal: SelectionGoal::None,
2877 }],
2878 Some(Autoscroll::Center),
2879 cx,
2880 );
2881 break;
2882 } else if search_start == 0 {
2883 break;
2884 } else {
2885 // Cycle around to the start of the buffer.
2886 search_start = 0;
2887 }
2888 }
2889 }
2890
2891 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2892 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2893 let buffer = self.buffer.read(cx).snapshot(cx);
2894 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2895 let is_valid = buffer
2896 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2897 .any(|entry| {
2898 entry.diagnostic.is_primary
2899 && !entry.range.is_empty()
2900 && entry.range.start == primary_range_start
2901 && entry.diagnostic.message == active_diagnostics.primary_message
2902 });
2903
2904 if is_valid != active_diagnostics.is_valid {
2905 active_diagnostics.is_valid = is_valid;
2906 let mut new_styles = HashMap::new();
2907 for (block_id, diagnostic) in &active_diagnostics.blocks {
2908 let build_settings = self.build_settings.clone();
2909 let diagnostic = diagnostic.clone();
2910 new_styles.insert(*block_id, move |cx: &BlockContext| {
2911 let diagnostic = diagnostic.clone();
2912 let settings = build_settings.borrow()(cx.cx);
2913 render_diagnostic(diagnostic, &settings.style, is_valid, cx.anchor_x)
2914 });
2915 }
2916 self.display_map
2917 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2918 }
2919 }
2920 }
2921
2922 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2923 self.dismiss_diagnostics(cx);
2924 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2925 let buffer = self.buffer.read(cx).snapshot(cx);
2926
2927 let mut primary_range = None;
2928 let mut primary_message = None;
2929 let mut group_end = Point::zero();
2930 let diagnostic_group = buffer
2931 .diagnostic_group::<Point>(group_id)
2932 .map(|entry| {
2933 if entry.range.end > group_end {
2934 group_end = entry.range.end;
2935 }
2936 if entry.diagnostic.is_primary {
2937 primary_range = Some(entry.range.clone());
2938 primary_message = Some(entry.diagnostic.message.clone());
2939 }
2940 entry
2941 })
2942 .collect::<Vec<_>>();
2943 let primary_range = primary_range.unwrap();
2944 let primary_message = primary_message.unwrap();
2945 let primary_range =
2946 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2947
2948 let blocks = display_map
2949 .insert_blocks(
2950 diagnostic_group.iter().map(|entry| {
2951 let build_settings = self.build_settings.clone();
2952 let diagnostic = entry.diagnostic.clone();
2953 let message_height = diagnostic.message.lines().count() as u8;
2954
2955 BlockProperties {
2956 position: entry.range.start,
2957 height: message_height,
2958 render: Arc::new(move |cx| {
2959 let settings = build_settings.borrow()(cx.cx);
2960 let diagnostic = diagnostic.clone();
2961 render_diagnostic(diagnostic, &settings.style, true, cx.anchor_x)
2962 }),
2963 disposition: BlockDisposition::Below,
2964 }
2965 }),
2966 cx,
2967 )
2968 .into_iter()
2969 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2970 .collect();
2971
2972 Some(ActiveDiagnosticGroup {
2973 primary_range,
2974 primary_message,
2975 blocks,
2976 is_valid: true,
2977 })
2978 });
2979 }
2980
2981 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2982 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2983 self.display_map.update(cx, |display_map, cx| {
2984 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2985 });
2986 cx.notify();
2987 }
2988 }
2989
2990 fn build_columnar_selection(
2991 &mut self,
2992 display_map: &DisplaySnapshot,
2993 row: u32,
2994 columns: &Range<u32>,
2995 reversed: bool,
2996 ) -> Option<Selection<Point>> {
2997 let is_empty = columns.start == columns.end;
2998 let line_len = display_map.line_len(row);
2999 if columns.start < line_len || (is_empty && columns.start == line_len) {
3000 let start = DisplayPoint::new(row, columns.start);
3001 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3002 Some(Selection {
3003 id: post_inc(&mut self.next_selection_id),
3004 start: start.to_point(display_map),
3005 end: end.to_point(display_map),
3006 reversed,
3007 goal: SelectionGoal::ColumnRange {
3008 start: columns.start,
3009 end: columns.end,
3010 },
3011 })
3012 } else {
3013 None
3014 }
3015 }
3016
3017 pub fn visible_selections<'a>(
3018 &'a self,
3019 display_rows: Range<u32>,
3020 cx: &'a mut MutableAppContext,
3021 ) -> HashMap<ReplicaId, Vec<Selection<DisplayPoint>>> {
3022 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3023 let buffer = &display_map.buffer_snapshot;
3024
3025 let start = if display_rows.start == 0 {
3026 Anchor::min()
3027 } else {
3028 buffer.anchor_before(
3029 DisplayPoint::new(display_rows.start, 0).to_offset(&display_map, Bias::Left),
3030 )
3031 };
3032 let end = if display_rows.end > display_map.max_point().row() {
3033 Anchor::max()
3034 } else {
3035 buffer.anchor_before(
3036 DisplayPoint::new(display_rows.end, 0).to_offset(&display_map, Bias::Right),
3037 )
3038 };
3039
3040 let start_ix = match self
3041 .selections
3042 .binary_search_by(|probe| probe.end.cmp(&start, &buffer).unwrap())
3043 {
3044 Ok(ix) | Err(ix) => ix,
3045 };
3046 let end_ix = match self
3047 .selections
3048 .binary_search_by(|probe| probe.start.cmp(&end, &buffer).unwrap())
3049 {
3050 Ok(ix) => ix + 1,
3051 Err(ix) => ix,
3052 };
3053
3054 fn display_selection(
3055 selection: &Selection<Anchor>,
3056 display_map: &DisplaySnapshot,
3057 ) -> Selection<DisplayPoint> {
3058 Selection {
3059 id: selection.id,
3060 start: selection.start.to_display_point(&display_map),
3061 end: selection.end.to_display_point(&display_map),
3062 reversed: selection.reversed,
3063 goal: selection.goal,
3064 }
3065 }
3066
3067 let mut result = HashMap::new();
3068
3069 result.insert(
3070 self.replica_id(cx),
3071 self.selections[start_ix..end_ix]
3072 .iter()
3073 .chain(
3074 self.pending_selection
3075 .as_ref()
3076 .map(|pending| &pending.selection),
3077 )
3078 .map(|s| display_selection(s, &display_map))
3079 .collect(),
3080 );
3081
3082 for (replica_id, selections) in display_map
3083 .buffer_snapshot
3084 .remote_selections_in_range(start..end)
3085 {
3086 result.insert(
3087 replica_id,
3088 selections
3089 .map(|s| display_selection(&s, &display_map))
3090 .collect(),
3091 );
3092 }
3093
3094 result
3095 }
3096
3097 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3098 where
3099 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3100 {
3101 let buffer = self.buffer.read(cx).snapshot(cx);
3102
3103 let mut summaries = buffer
3104 .summaries_for_anchors::<D, _>(self.selections.iter().flat_map(|s| [&s.start, &s.end]))
3105 .into_iter();
3106
3107 let mut selections = self
3108 .selections
3109 .iter()
3110 .map(|s| Selection {
3111 id: s.id,
3112 start: summaries.next().unwrap(),
3113 end: summaries.next().unwrap(),
3114 reversed: s.reversed,
3115 goal: s.goal,
3116 })
3117 .peekable();
3118
3119 let mut pending_selection = self.pending_selection::<D>(&buffer);
3120
3121 iter::from_fn(move || {
3122 if let Some(pending) = pending_selection.as_mut() {
3123 while let Some(next_selection) = selections.peek() {
3124 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3125 let next_selection = selections.next().unwrap();
3126 if next_selection.start < pending.start {
3127 pending.start = next_selection.start;
3128 }
3129 if next_selection.end > pending.end {
3130 pending.end = next_selection.end;
3131 }
3132 } else if next_selection.end < pending.start {
3133 return selections.next();
3134 } else {
3135 break;
3136 }
3137 }
3138
3139 pending_selection.take()
3140 } else {
3141 selections.next()
3142 }
3143 })
3144 .collect()
3145 }
3146
3147 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3148 &self,
3149 snapshot: &MultiBufferSnapshot,
3150 ) -> Option<Selection<D>> {
3151 self.pending_selection
3152 .as_ref()
3153 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3154 }
3155
3156 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3157 &self,
3158 selection: &Selection<Anchor>,
3159 buffer: &MultiBufferSnapshot,
3160 ) -> Selection<D> {
3161 Selection {
3162 id: selection.id,
3163 start: selection.start.summary::<D>(&buffer),
3164 end: selection.end.summary::<D>(&buffer),
3165 reversed: selection.reversed,
3166 goal: selection.goal,
3167 }
3168 }
3169
3170 fn selection_count<'a>(&self) -> usize {
3171 let mut count = self.selections.len();
3172 if self.pending_selection.is_some() {
3173 count += 1;
3174 }
3175 count
3176 }
3177
3178 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3179 &self,
3180 snapshot: &MultiBufferSnapshot,
3181 ) -> Selection<D> {
3182 self.selections
3183 .iter()
3184 .min_by_key(|s| s.id)
3185 .map(|selection| self.resolve_selection(selection, snapshot))
3186 .or_else(|| self.pending_selection(snapshot))
3187 .unwrap()
3188 }
3189
3190 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3191 &self,
3192 snapshot: &MultiBufferSnapshot,
3193 ) -> Selection<D> {
3194 self.pending_selection(snapshot)
3195 .or_else(|| {
3196 self.selections
3197 .iter()
3198 .min_by_key(|s| s.id)
3199 .map(|selection| self.resolve_selection(selection, snapshot))
3200 })
3201 .unwrap()
3202 }
3203
3204 pub fn update_selections<T>(
3205 &mut self,
3206 mut selections: Vec<Selection<T>>,
3207 autoscroll: Option<Autoscroll>,
3208 cx: &mut ViewContext<Self>,
3209 ) where
3210 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3211 {
3212 // Merge overlapping selections.
3213 let buffer = self.buffer.read(cx).snapshot(cx);
3214 let mut i = 1;
3215 while i < selections.len() {
3216 if selections[i - 1].end >= selections[i].start {
3217 let removed = selections.remove(i);
3218 if removed.start < selections[i - 1].start {
3219 selections[i - 1].start = removed.start;
3220 }
3221 if removed.end > selections[i - 1].end {
3222 selections[i - 1].end = removed.end;
3223 }
3224 } else {
3225 i += 1;
3226 }
3227 }
3228
3229 self.pending_selection = None;
3230 self.add_selections_state = None;
3231 self.select_next_state = None;
3232 self.select_larger_syntax_node_stack.clear();
3233 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3234 let all_selections_inside_autoclose_ranges =
3235 if selections.len() == autoclose_pair.ranges.len() {
3236 selections
3237 .iter()
3238 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3239 .all(|(selection, autoclose_range)| {
3240 let head = selection.head().to_point(&buffer);
3241 autoclose_range.start <= head && autoclose_range.end >= head
3242 })
3243 } else {
3244 false
3245 };
3246
3247 if all_selections_inside_autoclose_ranges {
3248 break;
3249 } else {
3250 self.autoclose_stack.pop();
3251 }
3252 }
3253
3254 if let Some(autoscroll) = autoscroll {
3255 self.request_autoscroll(autoscroll, cx);
3256 }
3257 self.pause_cursor_blinking(cx);
3258
3259 self.set_selections(
3260 Arc::from_iter(selections.into_iter().map(|selection| Selection {
3261 id: selection.id,
3262 start: buffer.anchor_before(selection.start),
3263 end: buffer.anchor_before(selection.end),
3264 reversed: selection.reversed,
3265 goal: selection.goal,
3266 })),
3267 cx,
3268 );
3269 }
3270
3271 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3272 self.selections = selections;
3273 self.buffer.update(cx, |buffer, cx| {
3274 buffer.set_active_selections(&self.selections, cx)
3275 });
3276 }
3277
3278 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3279 self.autoscroll_request = Some(autoscroll);
3280 cx.notify();
3281 }
3282
3283 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3284 self.start_transaction_at(Instant::now(), cx);
3285 }
3286
3287 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3288 self.end_selection(cx);
3289 if let Some(tx_id) = self
3290 .buffer
3291 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3292 {
3293 self.selection_history
3294 .insert(tx_id, (self.selections.clone(), None));
3295 }
3296 }
3297
3298 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3299 self.end_transaction_at(Instant::now(), cx);
3300 }
3301
3302 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3303 if let Some(tx_id) = self
3304 .buffer
3305 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3306 {
3307 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3308 }
3309 }
3310
3311 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3312 log::info!("Editor::page_up");
3313 }
3314
3315 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3316 log::info!("Editor::page_down");
3317 }
3318
3319 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3320 let mut fold_ranges = Vec::new();
3321
3322 let selections = self.local_selections::<Point>(cx);
3323 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3324 for selection in selections {
3325 let range = selection.display_range(&display_map).sorted();
3326 let buffer_start_row = range.start.to_point(&display_map).row;
3327
3328 for row in (0..=range.end.row()).rev() {
3329 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3330 let fold_range = self.foldable_range_for_line(&display_map, row);
3331 if fold_range.end.row >= buffer_start_row {
3332 fold_ranges.push(fold_range);
3333 if row <= range.start.row() {
3334 break;
3335 }
3336 }
3337 }
3338 }
3339 }
3340
3341 self.fold_ranges(fold_ranges, cx);
3342 }
3343
3344 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3345 let selections = self.local_selections::<Point>(cx);
3346 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3347 let buffer = &display_map.buffer_snapshot;
3348 let ranges = selections
3349 .iter()
3350 .map(|s| {
3351 let range = s.display_range(&display_map).sorted();
3352 let mut start = range.start.to_point(&display_map);
3353 let mut end = range.end.to_point(&display_map);
3354 start.column = 0;
3355 end.column = buffer.line_len(end.row);
3356 start..end
3357 })
3358 .collect::<Vec<_>>();
3359 self.unfold_ranges(ranges, cx);
3360 }
3361
3362 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3363 let max_point = display_map.max_point();
3364 if display_row >= max_point.row() {
3365 false
3366 } else {
3367 let (start_indent, is_blank) = display_map.line_indent(display_row);
3368 if is_blank {
3369 false
3370 } else {
3371 for display_row in display_row + 1..=max_point.row() {
3372 let (indent, is_blank) = display_map.line_indent(display_row);
3373 if !is_blank {
3374 return indent > start_indent;
3375 }
3376 }
3377 false
3378 }
3379 }
3380 }
3381
3382 fn foldable_range_for_line(
3383 &self,
3384 display_map: &DisplaySnapshot,
3385 start_row: u32,
3386 ) -> Range<Point> {
3387 let max_point = display_map.max_point();
3388
3389 let (start_indent, _) = display_map.line_indent(start_row);
3390 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3391 let mut end = None;
3392 for row in start_row + 1..=max_point.row() {
3393 let (indent, is_blank) = display_map.line_indent(row);
3394 if !is_blank && indent <= start_indent {
3395 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3396 break;
3397 }
3398 }
3399
3400 let end = end.unwrap_or(max_point);
3401 return start.to_point(display_map)..end.to_point(display_map);
3402 }
3403
3404 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3405 let selections = self.local_selections::<Point>(cx);
3406 let ranges = selections.into_iter().map(|s| s.start..s.end);
3407 self.fold_ranges(ranges, cx);
3408 }
3409
3410 fn fold_ranges<T: ToOffset>(
3411 &mut self,
3412 ranges: impl IntoIterator<Item = Range<T>>,
3413 cx: &mut ViewContext<Self>,
3414 ) {
3415 let mut ranges = ranges.into_iter().peekable();
3416 if ranges.peek().is_some() {
3417 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3418 self.request_autoscroll(Autoscroll::Fit, cx);
3419 cx.notify();
3420 }
3421 }
3422
3423 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3424 if !ranges.is_empty() {
3425 self.display_map
3426 .update(cx, |map, cx| map.unfold(ranges, cx));
3427 self.request_autoscroll(Autoscroll::Fit, cx);
3428 cx.notify();
3429 }
3430 }
3431
3432 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3433 self.display_map
3434 .update(cx, |map, cx| map.snapshot(cx))
3435 .longest_row()
3436 }
3437
3438 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3439 self.display_map
3440 .update(cx, |map, cx| map.snapshot(cx))
3441 .max_point()
3442 }
3443
3444 pub fn text(&self, cx: &AppContext) -> String {
3445 self.buffer.read(cx).read(cx).text()
3446 }
3447
3448 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3449 self.display_map
3450 .update(cx, |map, cx| map.snapshot(cx))
3451 .text()
3452 }
3453
3454 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3455 self.display_map
3456 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3457 }
3458
3459 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3460 self.highlighted_row = row;
3461 }
3462
3463 pub fn highlighted_row(&mut self) -> Option<u32> {
3464 self.highlighted_row
3465 }
3466
3467 fn next_blink_epoch(&mut self) -> usize {
3468 self.blink_epoch += 1;
3469 self.blink_epoch
3470 }
3471
3472 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3473 self.show_local_cursors = true;
3474 cx.notify();
3475
3476 let epoch = self.next_blink_epoch();
3477 cx.spawn(|this, mut cx| {
3478 let this = this.downgrade();
3479 async move {
3480 Timer::after(CURSOR_BLINK_INTERVAL).await;
3481 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3482 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3483 }
3484 }
3485 })
3486 .detach();
3487 }
3488
3489 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3490 if epoch == self.blink_epoch {
3491 self.blinking_paused = false;
3492 self.blink_cursors(epoch, cx);
3493 }
3494 }
3495
3496 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3497 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3498 self.show_local_cursors = !self.show_local_cursors;
3499 cx.notify();
3500
3501 let epoch = self.next_blink_epoch();
3502 cx.spawn(|this, mut cx| {
3503 let this = this.downgrade();
3504 async move {
3505 Timer::after(CURSOR_BLINK_INTERVAL).await;
3506 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3507 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3508 }
3509 }
3510 })
3511 .detach();
3512 }
3513 }
3514
3515 pub fn show_local_cursors(&self) -> bool {
3516 self.show_local_cursors
3517 }
3518
3519 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3520 self.refresh_active_diagnostics(cx);
3521 cx.notify();
3522 }
3523
3524 fn on_buffer_event(
3525 &mut self,
3526 _: ModelHandle<MultiBuffer>,
3527 event: &language::Event,
3528 cx: &mut ViewContext<Self>,
3529 ) {
3530 match event {
3531 language::Event::Edited => cx.emit(Event::Edited),
3532 language::Event::Dirtied => cx.emit(Event::Dirtied),
3533 language::Event::Saved => cx.emit(Event::Saved),
3534 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3535 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3536 language::Event::Closed => cx.emit(Event::Closed),
3537 _ => {}
3538 }
3539 }
3540
3541 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3542 cx.notify();
3543 }
3544}
3545
3546impl EditorSnapshot {
3547 pub fn is_focused(&self) -> bool {
3548 self.is_focused
3549 }
3550
3551 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3552 self.placeholder_text.as_ref()
3553 }
3554
3555 pub fn scroll_position(&self) -> Vector2F {
3556 compute_scroll_position(
3557 &self.display_snapshot,
3558 self.scroll_position,
3559 &self.scroll_top_anchor,
3560 )
3561 }
3562}
3563
3564impl Deref for EditorSnapshot {
3565 type Target = DisplaySnapshot;
3566
3567 fn deref(&self) -> &Self::Target {
3568 &self.display_snapshot
3569 }
3570}
3571
3572impl EditorSettings {
3573 #[cfg(any(test, feature = "test-support"))]
3574 pub fn test(cx: &AppContext) -> Self {
3575 Self {
3576 tab_size: 4,
3577 soft_wrap: SoftWrap::None,
3578 style: {
3579 let font_cache: &gpui::FontCache = cx.font_cache();
3580 let font_family_name = Arc::from("Monaco");
3581 let font_properties = Default::default();
3582 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3583 let font_id = font_cache
3584 .select_font(font_family_id, &font_properties)
3585 .unwrap();
3586 EditorStyle {
3587 text: gpui::fonts::TextStyle {
3588 font_family_name,
3589 font_family_id,
3590 font_id,
3591 font_size: 14.,
3592 color: gpui::color::Color::from_u32(0xff0000ff),
3593 font_properties,
3594 underline: None,
3595 },
3596 placeholder_text: None,
3597 background: Default::default(),
3598 gutter_background: Default::default(),
3599 active_line_background: Default::default(),
3600 highlighted_line_background: Default::default(),
3601 line_number: Default::default(),
3602 line_number_active: Default::default(),
3603 selection: Default::default(),
3604 guest_selections: Default::default(),
3605 syntax: Default::default(),
3606 error_diagnostic: Default::default(),
3607 invalid_error_diagnostic: Default::default(),
3608 warning_diagnostic: Default::default(),
3609 invalid_warning_diagnostic: Default::default(),
3610 information_diagnostic: Default::default(),
3611 invalid_information_diagnostic: Default::default(),
3612 hint_diagnostic: Default::default(),
3613 invalid_hint_diagnostic: Default::default(),
3614 }
3615 },
3616 }
3617 }
3618}
3619
3620fn compute_scroll_position(
3621 snapshot: &DisplaySnapshot,
3622 mut scroll_position: Vector2F,
3623 scroll_top_anchor: &Anchor,
3624) -> Vector2F {
3625 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3626 scroll_position.set_y(scroll_top + scroll_position.y());
3627 scroll_position
3628}
3629
3630pub enum Event {
3631 Activate,
3632 Edited,
3633 Blurred,
3634 Dirtied,
3635 Saved,
3636 FileHandleChanged,
3637 Closed,
3638}
3639
3640impl Entity for Editor {
3641 type Event = Event;
3642}
3643
3644impl View for Editor {
3645 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3646 let settings = self.build_settings.borrow_mut()(cx);
3647 self.display_map.update(cx, |map, cx| {
3648 map.set_font(
3649 settings.style.text.font_id,
3650 settings.style.text.font_size,
3651 cx,
3652 )
3653 });
3654 EditorElement::new(self.handle.clone(), settings).boxed()
3655 }
3656
3657 fn ui_name() -> &'static str {
3658 "Editor"
3659 }
3660
3661 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3662 self.focused = true;
3663 self.blink_cursors(self.blink_epoch, cx);
3664 self.buffer.update(cx, |buffer, cx| {
3665 buffer.set_active_selections(&self.selections, cx)
3666 });
3667 }
3668
3669 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3670 self.focused = false;
3671 self.show_local_cursors = false;
3672 self.buffer
3673 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3674 cx.emit(Event::Blurred);
3675 cx.notify();
3676 }
3677
3678 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3679 let mut cx = Self::default_keymap_context();
3680 let mode = match self.mode {
3681 EditorMode::SingleLine => "single_line",
3682 EditorMode::AutoHeight { .. } => "auto_height",
3683 EditorMode::Full => "full",
3684 };
3685 cx.map.insert("mode".into(), mode.into());
3686 cx
3687 }
3688}
3689
3690impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3691 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3692 let start = self.start.to_point(buffer);
3693 let end = self.end.to_point(buffer);
3694 if self.reversed {
3695 end..start
3696 } else {
3697 start..end
3698 }
3699 }
3700
3701 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3702 let start = self.start.to_offset(buffer);
3703 let end = self.end.to_offset(buffer);
3704 if self.reversed {
3705 end..start
3706 } else {
3707 start..end
3708 }
3709 }
3710
3711 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3712 let start = self
3713 .start
3714 .to_point(&map.buffer_snapshot)
3715 .to_display_point(map);
3716 let end = self
3717 .end
3718 .to_point(&map.buffer_snapshot)
3719 .to_display_point(map);
3720 if self.reversed {
3721 end..start
3722 } else {
3723 start..end
3724 }
3725 }
3726
3727 fn spanned_rows(
3728 &self,
3729 include_end_if_at_line_start: bool,
3730 map: &DisplaySnapshot,
3731 ) -> SpannedRows {
3732 let display_start = self
3733 .start
3734 .to_point(&map.buffer_snapshot)
3735 .to_display_point(map);
3736 let mut display_end = self
3737 .end
3738 .to_point(&map.buffer_snapshot)
3739 .to_display_point(map);
3740 if !include_end_if_at_line_start
3741 && display_end.row() != map.max_point().row()
3742 && display_start.row() != display_end.row()
3743 && display_end.column() == 0
3744 {
3745 *display_end.row_mut() -= 1;
3746 }
3747
3748 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3749 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3750
3751 SpannedRows {
3752 buffer_rows: buffer_start.row..buffer_end.row + 1,
3753 display_rows: display_start.row()..display_end.row() + 1,
3754 }
3755 }
3756}
3757
3758fn render_diagnostic(
3759 diagnostic: Diagnostic,
3760 style: &EditorStyle,
3761 valid: bool,
3762 anchor_x: f32,
3763) -> ElementBox {
3764 let mut text_style = style.text.clone();
3765 text_style.color = diagnostic_style(diagnostic.severity, valid, &style).text;
3766 Text::new(diagnostic.message, text_style)
3767 .contained()
3768 .with_margin_left(anchor_x)
3769 .boxed()
3770}
3771
3772pub fn diagnostic_style(
3773 severity: DiagnosticSeverity,
3774 valid: bool,
3775 style: &EditorStyle,
3776) -> DiagnosticStyle {
3777 match (severity, valid) {
3778 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3779 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3780 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3781 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3782 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3783 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3784 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3785 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3786 _ => Default::default(),
3787 }
3788}
3789
3790#[cfg(test)]
3791mod tests {
3792 use super::*;
3793 use language::LanguageConfig;
3794 use std::time::Instant;
3795 use text::Point;
3796 use unindent::Unindent;
3797 use util::test::sample_text;
3798
3799 #[gpui::test]
3800 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3801 let mut now = Instant::now();
3802 let buffer = MultiBuffer::build_simple("123456", cx);
3803 let settings = EditorSettings::test(cx);
3804 let (_, editor) = cx.add_window(Default::default(), |cx| {
3805 build_editor(buffer.clone(), settings, cx)
3806 });
3807
3808 editor.update(cx, |editor, cx| {
3809 editor.start_transaction_at(now, cx);
3810 editor.select_ranges([2..4], None, cx);
3811 editor.insert("cd", cx);
3812 editor.end_transaction_at(now, cx);
3813 assert_eq!(editor.text(cx), "12cd56");
3814 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3815
3816 editor.start_transaction_at(now, cx);
3817 editor.select_ranges([4..5], None, cx);
3818 editor.insert("e", cx);
3819 editor.end_transaction_at(now, cx);
3820 assert_eq!(editor.text(cx), "12cde6");
3821 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3822
3823 now += buffer.read(cx).transaction_group_interval(cx) + Duration::from_millis(1);
3824 editor.select_ranges([2..2], None, cx);
3825
3826 // Simulate an edit in another editor
3827 buffer.update(cx, |buffer, cx| {
3828 buffer.start_transaction_at(now, cx);
3829 buffer.edit([0..1], "a", cx);
3830 buffer.edit([1..1], "b", cx);
3831 buffer.end_transaction_at(now, cx);
3832 });
3833
3834 assert_eq!(editor.text(cx), "ab2cde6");
3835 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3836
3837 // Last transaction happened past the group interval in a different editor.
3838 // Undo it individually and don't restore selections.
3839 editor.undo(&Undo, cx);
3840 assert_eq!(editor.text(cx), "12cde6");
3841 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3842
3843 // First two transactions happened within the group interval in this editor.
3844 // Undo them together and restore selections.
3845 editor.undo(&Undo, cx);
3846 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3847 assert_eq!(editor.text(cx), "123456");
3848 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3849
3850 // Redo the first two transactions together.
3851 editor.redo(&Redo, cx);
3852 assert_eq!(editor.text(cx), "12cde6");
3853 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3854
3855 // Redo the last transaction on its own.
3856 editor.redo(&Redo, cx);
3857 assert_eq!(editor.text(cx), "ab2cde6");
3858 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3859
3860 // Test empty transactions.
3861 editor.start_transaction_at(now, cx);
3862 editor.end_transaction_at(now, cx);
3863 editor.undo(&Undo, cx);
3864 assert_eq!(editor.text(cx), "12cde6");
3865 });
3866 }
3867
3868 #[gpui::test]
3869 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3870 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3871 let settings = EditorSettings::test(cx);
3872 let (_, editor) =
3873 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3874
3875 editor.update(cx, |view, cx| {
3876 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3877 });
3878
3879 assert_eq!(
3880 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3881 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3882 );
3883
3884 editor.update(cx, |view, cx| {
3885 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3886 });
3887
3888 assert_eq!(
3889 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3890 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3891 );
3892
3893 editor.update(cx, |view, cx| {
3894 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3895 });
3896
3897 assert_eq!(
3898 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3899 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3900 );
3901
3902 editor.update(cx, |view, cx| {
3903 view.end_selection(cx);
3904 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3905 });
3906
3907 assert_eq!(
3908 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3909 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3910 );
3911
3912 editor.update(cx, |view, cx| {
3913 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3914 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
3915 });
3916
3917 eprintln!(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
3918 assert_eq!(
3919 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3920 [
3921 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3922 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3923 ]
3924 );
3925
3926 editor.update(cx, |view, cx| {
3927 view.end_selection(cx);
3928 });
3929
3930 assert_eq!(
3931 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3932 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3933 );
3934 }
3935
3936 #[gpui::test]
3937 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3938 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3939 let settings = EditorSettings::test(cx);
3940 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3941
3942 view.update(cx, |view, cx| {
3943 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3944 assert_eq!(
3945 view.selected_display_ranges(cx),
3946 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3947 );
3948 });
3949
3950 view.update(cx, |view, cx| {
3951 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3952 assert_eq!(
3953 view.selected_display_ranges(cx),
3954 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3955 );
3956 });
3957
3958 view.update(cx, |view, cx| {
3959 view.cancel(&Cancel, cx);
3960 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3961 assert_eq!(
3962 view.selected_display_ranges(cx),
3963 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3964 );
3965 });
3966 }
3967
3968 #[gpui::test]
3969 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3970 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3971 let settings = EditorSettings::test(cx);
3972 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3973
3974 view.update(cx, |view, cx| {
3975 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3976 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3977 view.end_selection(cx);
3978
3979 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3980 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
3981 view.end_selection(cx);
3982 assert_eq!(
3983 view.selected_display_ranges(cx),
3984 [
3985 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3986 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3987 ]
3988 );
3989 });
3990
3991 view.update(cx, |view, cx| {
3992 view.cancel(&Cancel, cx);
3993 assert_eq!(
3994 view.selected_display_ranges(cx),
3995 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3996 );
3997 });
3998
3999 view.update(cx, |view, cx| {
4000 view.cancel(&Cancel, cx);
4001 assert_eq!(
4002 view.selected_display_ranges(cx),
4003 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4004 );
4005 });
4006 }
4007
4008 #[gpui::test]
4009 fn test_fold(cx: &mut gpui::MutableAppContext) {
4010 let buffer = MultiBuffer::build_simple(
4011 &"
4012 impl Foo {
4013 // Hello!
4014
4015 fn a() {
4016 1
4017 }
4018
4019 fn b() {
4020 2
4021 }
4022
4023 fn c() {
4024 3
4025 }
4026 }
4027 "
4028 .unindent(),
4029 cx,
4030 );
4031 let settings = EditorSettings::test(&cx);
4032 let (_, view) = cx.add_window(Default::default(), |cx| {
4033 build_editor(buffer.clone(), settings, cx)
4034 });
4035
4036 view.update(cx, |view, cx| {
4037 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4038 .unwrap();
4039 view.fold(&Fold, cx);
4040 assert_eq!(
4041 view.display_text(cx),
4042 "
4043 impl Foo {
4044 // Hello!
4045
4046 fn a() {
4047 1
4048 }
4049
4050 fn b() {…
4051 }
4052
4053 fn c() {…
4054 }
4055 }
4056 "
4057 .unindent(),
4058 );
4059
4060 view.fold(&Fold, cx);
4061 assert_eq!(
4062 view.display_text(cx),
4063 "
4064 impl Foo {…
4065 }
4066 "
4067 .unindent(),
4068 );
4069
4070 view.unfold(&Unfold, cx);
4071 assert_eq!(
4072 view.display_text(cx),
4073 "
4074 impl Foo {
4075 // Hello!
4076
4077 fn a() {
4078 1
4079 }
4080
4081 fn b() {…
4082 }
4083
4084 fn c() {…
4085 }
4086 }
4087 "
4088 .unindent(),
4089 );
4090
4091 view.unfold(&Unfold, cx);
4092 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4093 });
4094 }
4095
4096 #[gpui::test]
4097 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4098 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4099 let settings = EditorSettings::test(&cx);
4100 let (_, view) = cx.add_window(Default::default(), |cx| {
4101 build_editor(buffer.clone(), settings, cx)
4102 });
4103
4104 buffer.update(cx, |buffer, cx| {
4105 buffer.edit(
4106 vec![
4107 Point::new(1, 0)..Point::new(1, 0),
4108 Point::new(1, 1)..Point::new(1, 1),
4109 ],
4110 "\t",
4111 cx,
4112 );
4113 });
4114
4115 view.update(cx, |view, cx| {
4116 assert_eq!(
4117 view.selected_display_ranges(cx),
4118 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4119 );
4120
4121 view.move_down(&MoveDown, cx);
4122 assert_eq!(
4123 view.selected_display_ranges(cx),
4124 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4125 );
4126
4127 view.move_right(&MoveRight, cx);
4128 assert_eq!(
4129 view.selected_display_ranges(cx),
4130 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4131 );
4132
4133 view.move_left(&MoveLeft, cx);
4134 assert_eq!(
4135 view.selected_display_ranges(cx),
4136 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4137 );
4138
4139 view.move_up(&MoveUp, cx);
4140 assert_eq!(
4141 view.selected_display_ranges(cx),
4142 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4143 );
4144
4145 view.move_to_end(&MoveToEnd, cx);
4146 assert_eq!(
4147 view.selected_display_ranges(cx),
4148 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4149 );
4150
4151 view.move_to_beginning(&MoveToBeginning, cx);
4152 assert_eq!(
4153 view.selected_display_ranges(cx),
4154 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4155 );
4156
4157 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4158 .unwrap();
4159 view.select_to_beginning(&SelectToBeginning, cx);
4160 assert_eq!(
4161 view.selected_display_ranges(cx),
4162 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4163 );
4164
4165 view.select_to_end(&SelectToEnd, cx);
4166 assert_eq!(
4167 view.selected_display_ranges(cx),
4168 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4169 );
4170 });
4171 }
4172
4173 #[gpui::test]
4174 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4175 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4176 let settings = EditorSettings::test(&cx);
4177 let (_, view) = cx.add_window(Default::default(), |cx| {
4178 build_editor(buffer.clone(), settings, cx)
4179 });
4180
4181 assert_eq!('ⓐ'.len_utf8(), 3);
4182 assert_eq!('α'.len_utf8(), 2);
4183
4184 view.update(cx, |view, cx| {
4185 view.fold_ranges(
4186 vec![
4187 Point::new(0, 6)..Point::new(0, 12),
4188 Point::new(1, 2)..Point::new(1, 4),
4189 Point::new(2, 4)..Point::new(2, 8),
4190 ],
4191 cx,
4192 );
4193 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4194
4195 view.move_right(&MoveRight, cx);
4196 assert_eq!(
4197 view.selected_display_ranges(cx),
4198 &[empty_range(0, "ⓐ".len())]
4199 );
4200 view.move_right(&MoveRight, cx);
4201 assert_eq!(
4202 view.selected_display_ranges(cx),
4203 &[empty_range(0, "ⓐⓑ".len())]
4204 );
4205 view.move_right(&MoveRight, cx);
4206 assert_eq!(
4207 view.selected_display_ranges(cx),
4208 &[empty_range(0, "ⓐⓑ…".len())]
4209 );
4210
4211 view.move_down(&MoveDown, cx);
4212 assert_eq!(
4213 view.selected_display_ranges(cx),
4214 &[empty_range(1, "ab…".len())]
4215 );
4216 view.move_left(&MoveLeft, cx);
4217 assert_eq!(
4218 view.selected_display_ranges(cx),
4219 &[empty_range(1, "ab".len())]
4220 );
4221 view.move_left(&MoveLeft, cx);
4222 assert_eq!(
4223 view.selected_display_ranges(cx),
4224 &[empty_range(1, "a".len())]
4225 );
4226
4227 view.move_down(&MoveDown, cx);
4228 assert_eq!(
4229 view.selected_display_ranges(cx),
4230 &[empty_range(2, "α".len())]
4231 );
4232 view.move_right(&MoveRight, cx);
4233 assert_eq!(
4234 view.selected_display_ranges(cx),
4235 &[empty_range(2, "αβ".len())]
4236 );
4237 view.move_right(&MoveRight, cx);
4238 assert_eq!(
4239 view.selected_display_ranges(cx),
4240 &[empty_range(2, "αβ…".len())]
4241 );
4242 view.move_right(&MoveRight, cx);
4243 assert_eq!(
4244 view.selected_display_ranges(cx),
4245 &[empty_range(2, "αβ…ε".len())]
4246 );
4247
4248 view.move_up(&MoveUp, cx);
4249 assert_eq!(
4250 view.selected_display_ranges(cx),
4251 &[empty_range(1, "ab…e".len())]
4252 );
4253 view.move_up(&MoveUp, cx);
4254 assert_eq!(
4255 view.selected_display_ranges(cx),
4256 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4257 );
4258 view.move_left(&MoveLeft, cx);
4259 assert_eq!(
4260 view.selected_display_ranges(cx),
4261 &[empty_range(0, "ⓐⓑ…".len())]
4262 );
4263 view.move_left(&MoveLeft, cx);
4264 assert_eq!(
4265 view.selected_display_ranges(cx),
4266 &[empty_range(0, "ⓐⓑ".len())]
4267 );
4268 view.move_left(&MoveLeft, cx);
4269 assert_eq!(
4270 view.selected_display_ranges(cx),
4271 &[empty_range(0, "ⓐ".len())]
4272 );
4273 });
4274 }
4275
4276 #[gpui::test]
4277 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4278 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4279 let settings = EditorSettings::test(&cx);
4280 let (_, view) = cx.add_window(Default::default(), |cx| {
4281 build_editor(buffer.clone(), settings, cx)
4282 });
4283 view.update(cx, |view, cx| {
4284 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4285 .unwrap();
4286
4287 view.move_down(&MoveDown, cx);
4288 assert_eq!(
4289 view.selected_display_ranges(cx),
4290 &[empty_range(1, "abcd".len())]
4291 );
4292
4293 view.move_down(&MoveDown, cx);
4294 assert_eq!(
4295 view.selected_display_ranges(cx),
4296 &[empty_range(2, "αβγ".len())]
4297 );
4298
4299 view.move_down(&MoveDown, cx);
4300 assert_eq!(
4301 view.selected_display_ranges(cx),
4302 &[empty_range(3, "abcd".len())]
4303 );
4304
4305 view.move_down(&MoveDown, cx);
4306 assert_eq!(
4307 view.selected_display_ranges(cx),
4308 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4309 );
4310
4311 view.move_up(&MoveUp, cx);
4312 assert_eq!(
4313 view.selected_display_ranges(cx),
4314 &[empty_range(3, "abcd".len())]
4315 );
4316
4317 view.move_up(&MoveUp, cx);
4318 assert_eq!(
4319 view.selected_display_ranges(cx),
4320 &[empty_range(2, "αβγ".len())]
4321 );
4322 });
4323 }
4324
4325 #[gpui::test]
4326 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4327 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4328 let settings = EditorSettings::test(&cx);
4329 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4330 view.update(cx, |view, cx| {
4331 view.select_display_ranges(
4332 &[
4333 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4334 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4335 ],
4336 cx,
4337 )
4338 .unwrap();
4339 });
4340
4341 view.update(cx, |view, cx| {
4342 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4343 assert_eq!(
4344 view.selected_display_ranges(cx),
4345 &[
4346 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4347 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4348 ]
4349 );
4350 });
4351
4352 view.update(cx, |view, cx| {
4353 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4354 assert_eq!(
4355 view.selected_display_ranges(cx),
4356 &[
4357 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4358 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4359 ]
4360 );
4361 });
4362
4363 view.update(cx, |view, cx| {
4364 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4365 assert_eq!(
4366 view.selected_display_ranges(cx),
4367 &[
4368 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4369 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4370 ]
4371 );
4372 });
4373
4374 view.update(cx, |view, cx| {
4375 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4376 assert_eq!(
4377 view.selected_display_ranges(cx),
4378 &[
4379 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4380 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4381 ]
4382 );
4383 });
4384
4385 // Moving to the end of line again is a no-op.
4386 view.update(cx, |view, cx| {
4387 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4388 assert_eq!(
4389 view.selected_display_ranges(cx),
4390 &[
4391 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4392 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4393 ]
4394 );
4395 });
4396
4397 view.update(cx, |view, cx| {
4398 view.move_left(&MoveLeft, cx);
4399 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4400 assert_eq!(
4401 view.selected_display_ranges(cx),
4402 &[
4403 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4404 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4405 ]
4406 );
4407 });
4408
4409 view.update(cx, |view, cx| {
4410 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4411 assert_eq!(
4412 view.selected_display_ranges(cx),
4413 &[
4414 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4415 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4416 ]
4417 );
4418 });
4419
4420 view.update(cx, |view, cx| {
4421 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4422 assert_eq!(
4423 view.selected_display_ranges(cx),
4424 &[
4425 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4426 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4427 ]
4428 );
4429 });
4430
4431 view.update(cx, |view, cx| {
4432 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4433 assert_eq!(
4434 view.selected_display_ranges(cx),
4435 &[
4436 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4437 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4438 ]
4439 );
4440 });
4441
4442 view.update(cx, |view, cx| {
4443 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4444 assert_eq!(view.display_text(cx), "ab\n de");
4445 assert_eq!(
4446 view.selected_display_ranges(cx),
4447 &[
4448 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4449 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4450 ]
4451 );
4452 });
4453
4454 view.update(cx, |view, cx| {
4455 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4456 assert_eq!(view.display_text(cx), "\n");
4457 assert_eq!(
4458 view.selected_display_ranges(cx),
4459 &[
4460 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4461 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4462 ]
4463 );
4464 });
4465 }
4466
4467 #[gpui::test]
4468 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4469 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4470 let settings = EditorSettings::test(&cx);
4471 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4472 view.update(cx, |view, cx| {
4473 view.select_display_ranges(
4474 &[
4475 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4476 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4477 ],
4478 cx,
4479 )
4480 .unwrap();
4481 });
4482
4483 view.update(cx, |view, cx| {
4484 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4485 assert_eq!(
4486 view.selected_display_ranges(cx),
4487 &[
4488 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4489 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4490 ]
4491 );
4492 });
4493
4494 view.update(cx, |view, cx| {
4495 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4496 assert_eq!(
4497 view.selected_display_ranges(cx),
4498 &[
4499 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4500 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4501 ]
4502 );
4503 });
4504
4505 view.update(cx, |view, cx| {
4506 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4507 assert_eq!(
4508 view.selected_display_ranges(cx),
4509 &[
4510 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4511 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4512 ]
4513 );
4514 });
4515
4516 view.update(cx, |view, cx| {
4517 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4518 assert_eq!(
4519 view.selected_display_ranges(cx),
4520 &[
4521 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4522 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4523 ]
4524 );
4525 });
4526
4527 view.update(cx, |view, cx| {
4528 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4529 assert_eq!(
4530 view.selected_display_ranges(cx),
4531 &[
4532 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4533 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4534 ]
4535 );
4536 });
4537
4538 view.update(cx, |view, cx| {
4539 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4540 assert_eq!(
4541 view.selected_display_ranges(cx),
4542 &[
4543 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4544 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4545 ]
4546 );
4547 });
4548
4549 view.update(cx, |view, cx| {
4550 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4551 assert_eq!(
4552 view.selected_display_ranges(cx),
4553 &[
4554 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4555 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4556 ]
4557 );
4558 });
4559
4560 view.update(cx, |view, cx| {
4561 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4562 assert_eq!(
4563 view.selected_display_ranges(cx),
4564 &[
4565 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4566 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4567 ]
4568 );
4569 });
4570
4571 view.update(cx, |view, cx| {
4572 view.move_right(&MoveRight, cx);
4573 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4574 assert_eq!(
4575 view.selected_display_ranges(cx),
4576 &[
4577 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4578 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4579 ]
4580 );
4581 });
4582
4583 view.update(cx, |view, cx| {
4584 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4585 assert_eq!(
4586 view.selected_display_ranges(cx),
4587 &[
4588 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4589 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4590 ]
4591 );
4592 });
4593
4594 view.update(cx, |view, cx| {
4595 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4596 assert_eq!(
4597 view.selected_display_ranges(cx),
4598 &[
4599 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4600 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4601 ]
4602 );
4603 });
4604 }
4605
4606 #[gpui::test]
4607 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4608 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4609 let settings = EditorSettings::test(&cx);
4610 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4611
4612 view.update(cx, |view, cx| {
4613 view.set_wrap_width(Some(140.), cx);
4614 assert_eq!(
4615 view.display_text(cx),
4616 "use one::{\n two::three::\n four::five\n};"
4617 );
4618
4619 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4620 .unwrap();
4621
4622 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4623 assert_eq!(
4624 view.selected_display_ranges(cx),
4625 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4626 );
4627
4628 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4629 assert_eq!(
4630 view.selected_display_ranges(cx),
4631 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4632 );
4633
4634 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4635 assert_eq!(
4636 view.selected_display_ranges(cx),
4637 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4638 );
4639
4640 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4641 assert_eq!(
4642 view.selected_display_ranges(cx),
4643 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4644 );
4645
4646 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4647 assert_eq!(
4648 view.selected_display_ranges(cx),
4649 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4650 );
4651
4652 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4653 assert_eq!(
4654 view.selected_display_ranges(cx),
4655 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4656 );
4657 });
4658 }
4659
4660 #[gpui::test]
4661 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4662 let buffer = MultiBuffer::build_simple("one two three four", cx);
4663 let settings = EditorSettings::test(&cx);
4664 let (_, view) = cx.add_window(Default::default(), |cx| {
4665 build_editor(buffer.clone(), settings, cx)
4666 });
4667
4668 view.update(cx, |view, cx| {
4669 view.select_display_ranges(
4670 &[
4671 // an empty selection - the preceding word fragment is deleted
4672 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4673 // characters selected - they are deleted
4674 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4675 ],
4676 cx,
4677 )
4678 .unwrap();
4679 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4680 });
4681
4682 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4683
4684 view.update(cx, |view, cx| {
4685 view.select_display_ranges(
4686 &[
4687 // an empty selection - the following word fragment is deleted
4688 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4689 // characters selected - they are deleted
4690 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4691 ],
4692 cx,
4693 )
4694 .unwrap();
4695 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4696 });
4697
4698 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4699 }
4700
4701 #[gpui::test]
4702 fn test_newline(cx: &mut gpui::MutableAppContext) {
4703 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4704 let settings = EditorSettings::test(&cx);
4705 let (_, view) = cx.add_window(Default::default(), |cx| {
4706 build_editor(buffer.clone(), settings, cx)
4707 });
4708
4709 view.update(cx, |view, cx| {
4710 view.select_display_ranges(
4711 &[
4712 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4713 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4714 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4715 ],
4716 cx,
4717 )
4718 .unwrap();
4719
4720 view.newline(&Newline, cx);
4721 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4722 });
4723 }
4724
4725 #[gpui::test]
4726 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4727 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4728 let settings = EditorSettings::test(&cx);
4729 let (_, view) = cx.add_window(Default::default(), |cx| {
4730 build_editor(buffer.clone(), settings, cx)
4731 });
4732
4733 view.update(cx, |view, cx| {
4734 // two selections on the same line
4735 view.select_display_ranges(
4736 &[
4737 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4738 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4739 ],
4740 cx,
4741 )
4742 .unwrap();
4743
4744 // indent from mid-tabstop to full tabstop
4745 view.tab(&Tab, cx);
4746 assert_eq!(view.text(cx), " one two\nthree\n four");
4747 assert_eq!(
4748 view.selected_display_ranges(cx),
4749 &[
4750 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4751 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4752 ]
4753 );
4754
4755 // outdent from 1 tabstop to 0 tabstops
4756 view.outdent(&Outdent, cx);
4757 assert_eq!(view.text(cx), "one two\nthree\n four");
4758 assert_eq!(
4759 view.selected_display_ranges(cx),
4760 &[
4761 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4762 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4763 ]
4764 );
4765
4766 // select across line ending
4767 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4768 .unwrap();
4769
4770 // indent and outdent affect only the preceding line
4771 view.tab(&Tab, cx);
4772 assert_eq!(view.text(cx), "one two\n three\n four");
4773 assert_eq!(
4774 view.selected_display_ranges(cx),
4775 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4776 );
4777 view.outdent(&Outdent, cx);
4778 assert_eq!(view.text(cx), "one two\nthree\n four");
4779 assert_eq!(
4780 view.selected_display_ranges(cx),
4781 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4782 );
4783 });
4784 }
4785
4786 #[gpui::test]
4787 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4788 let buffer =
4789 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4790 let settings = EditorSettings::test(&cx);
4791 let (_, view) = cx.add_window(Default::default(), |cx| {
4792 build_editor(buffer.clone(), settings, cx)
4793 });
4794
4795 view.update(cx, |view, cx| {
4796 view.select_display_ranges(
4797 &[
4798 // an empty selection - the preceding character is deleted
4799 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4800 // one character selected - it is deleted
4801 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4802 // a line suffix selected - it is deleted
4803 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4804 ],
4805 cx,
4806 )
4807 .unwrap();
4808 view.backspace(&Backspace, cx);
4809 });
4810
4811 assert_eq!(
4812 buffer.read(cx).read(cx).text(),
4813 "oe two three\nfou five six\nseven ten\n"
4814 );
4815 }
4816
4817 #[gpui::test]
4818 fn test_delete(cx: &mut gpui::MutableAppContext) {
4819 let buffer =
4820 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4821 let settings = EditorSettings::test(&cx);
4822 let (_, view) = cx.add_window(Default::default(), |cx| {
4823 build_editor(buffer.clone(), settings, cx)
4824 });
4825
4826 view.update(cx, |view, cx| {
4827 view.select_display_ranges(
4828 &[
4829 // an empty selection - the following character is deleted
4830 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4831 // one character selected - it is deleted
4832 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4833 // a line suffix selected - it is deleted
4834 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4835 ],
4836 cx,
4837 )
4838 .unwrap();
4839 view.delete(&Delete, cx);
4840 });
4841
4842 assert_eq!(
4843 buffer.read(cx).read(cx).text(),
4844 "on two three\nfou five six\nseven ten\n"
4845 );
4846 }
4847
4848 #[gpui::test]
4849 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4850 let settings = EditorSettings::test(&cx);
4851 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4852 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4853 view.update(cx, |view, cx| {
4854 view.select_display_ranges(
4855 &[
4856 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4857 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4858 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4859 ],
4860 cx,
4861 )
4862 .unwrap();
4863 view.delete_line(&DeleteLine, cx);
4864 assert_eq!(view.display_text(cx), "ghi");
4865 assert_eq!(
4866 view.selected_display_ranges(cx),
4867 vec![
4868 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4869 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4870 ]
4871 );
4872 });
4873
4874 let settings = EditorSettings::test(&cx);
4875 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4876 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4877 view.update(cx, |view, cx| {
4878 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4879 .unwrap();
4880 view.delete_line(&DeleteLine, cx);
4881 assert_eq!(view.display_text(cx), "ghi\n");
4882 assert_eq!(
4883 view.selected_display_ranges(cx),
4884 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4885 );
4886 });
4887 }
4888
4889 #[gpui::test]
4890 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4891 let settings = EditorSettings::test(&cx);
4892 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4893 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4894 view.update(cx, |view, cx| {
4895 view.select_display_ranges(
4896 &[
4897 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4898 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4899 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4900 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4901 ],
4902 cx,
4903 )
4904 .unwrap();
4905 view.duplicate_line(&DuplicateLine, cx);
4906 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4907 assert_eq!(
4908 view.selected_display_ranges(cx),
4909 vec![
4910 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4911 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4912 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4913 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4914 ]
4915 );
4916 });
4917
4918 let settings = EditorSettings::test(&cx);
4919 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4920 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4921 view.update(cx, |view, cx| {
4922 view.select_display_ranges(
4923 &[
4924 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4925 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4926 ],
4927 cx,
4928 )
4929 .unwrap();
4930 view.duplicate_line(&DuplicateLine, cx);
4931 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4932 assert_eq!(
4933 view.selected_display_ranges(cx),
4934 vec![
4935 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4936 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4937 ]
4938 );
4939 });
4940 }
4941
4942 #[gpui::test]
4943 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4944 let settings = EditorSettings::test(&cx);
4945 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
4946 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4947 view.update(cx, |view, cx| {
4948 view.fold_ranges(
4949 vec![
4950 Point::new(0, 2)..Point::new(1, 2),
4951 Point::new(2, 3)..Point::new(4, 1),
4952 Point::new(7, 0)..Point::new(8, 4),
4953 ],
4954 cx,
4955 );
4956 view.select_display_ranges(
4957 &[
4958 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4959 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4960 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4961 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4962 ],
4963 cx,
4964 )
4965 .unwrap();
4966 assert_eq!(
4967 view.display_text(cx),
4968 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4969 );
4970
4971 view.move_line_up(&MoveLineUp, cx);
4972 assert_eq!(
4973 view.display_text(cx),
4974 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4975 );
4976 assert_eq!(
4977 view.selected_display_ranges(cx),
4978 vec![
4979 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4980 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4981 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4982 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4983 ]
4984 );
4985 });
4986
4987 view.update(cx, |view, cx| {
4988 view.move_line_down(&MoveLineDown, cx);
4989 assert_eq!(
4990 view.display_text(cx),
4991 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4992 );
4993 assert_eq!(
4994 view.selected_display_ranges(cx),
4995 vec![
4996 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4997 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4998 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4999 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5000 ]
5001 );
5002 });
5003
5004 view.update(cx, |view, cx| {
5005 view.move_line_down(&MoveLineDown, cx);
5006 assert_eq!(
5007 view.display_text(cx),
5008 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5009 );
5010 assert_eq!(
5011 view.selected_display_ranges(cx),
5012 vec![
5013 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5014 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5015 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5016 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5017 ]
5018 );
5019 });
5020
5021 view.update(cx, |view, cx| {
5022 view.move_line_up(&MoveLineUp, cx);
5023 assert_eq!(
5024 view.display_text(cx),
5025 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5026 );
5027 assert_eq!(
5028 view.selected_display_ranges(cx),
5029 vec![
5030 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5031 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5032 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5033 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5034 ]
5035 );
5036 });
5037 }
5038
5039 #[gpui::test]
5040 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5041 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5042 let settings = EditorSettings::test(&cx);
5043 let view = cx
5044 .add_window(Default::default(), |cx| {
5045 build_editor(buffer.clone(), settings, cx)
5046 })
5047 .1;
5048
5049 // Cut with three selections. Clipboard text is divided into three slices.
5050 view.update(cx, |view, cx| {
5051 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5052 view.cut(&Cut, cx);
5053 assert_eq!(view.display_text(cx), "two four six ");
5054 });
5055
5056 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5057 view.update(cx, |view, cx| {
5058 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5059 view.paste(&Paste, cx);
5060 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5061 assert_eq!(
5062 view.selected_display_ranges(cx),
5063 &[
5064 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5065 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5066 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5067 ]
5068 );
5069 });
5070
5071 // Paste again but with only two cursors. Since the number of cursors doesn't
5072 // match the number of slices in the clipboard, the entire clipboard text
5073 // is pasted at each cursor.
5074 view.update(cx, |view, cx| {
5075 view.select_ranges(vec![0..0, 31..31], None, cx);
5076 view.handle_input(&Input("( ".into()), cx);
5077 view.paste(&Paste, cx);
5078 view.handle_input(&Input(") ".into()), cx);
5079 assert_eq!(
5080 view.display_text(cx),
5081 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5082 );
5083 });
5084
5085 view.update(cx, |view, cx| {
5086 view.select_ranges(vec![0..0], None, cx);
5087 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5088 assert_eq!(
5089 view.display_text(cx),
5090 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5091 );
5092 });
5093
5094 // Cut with three selections, one of which is full-line.
5095 view.update(cx, |view, cx| {
5096 view.select_display_ranges(
5097 &[
5098 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5099 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5100 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5101 ],
5102 cx,
5103 )
5104 .unwrap();
5105 view.cut(&Cut, cx);
5106 assert_eq!(
5107 view.display_text(cx),
5108 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5109 );
5110 });
5111
5112 // Paste with three selections, noticing how the copied selection that was full-line
5113 // gets inserted before the second cursor.
5114 view.update(cx, |view, cx| {
5115 view.select_display_ranges(
5116 &[
5117 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5118 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5119 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5120 ],
5121 cx,
5122 )
5123 .unwrap();
5124 view.paste(&Paste, cx);
5125 assert_eq!(
5126 view.display_text(cx),
5127 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5128 );
5129 assert_eq!(
5130 view.selected_display_ranges(cx),
5131 &[
5132 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5133 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5134 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5135 ]
5136 );
5137 });
5138
5139 // Copy with a single cursor only, which writes the whole line into the clipboard.
5140 view.update(cx, |view, cx| {
5141 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5142 .unwrap();
5143 view.copy(&Copy, cx);
5144 });
5145
5146 // Paste with three selections, noticing how the copied full-line selection is inserted
5147 // before the empty selections but replaces the selection that is non-empty.
5148 view.update(cx, |view, cx| {
5149 view.select_display_ranges(
5150 &[
5151 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5152 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5153 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5154 ],
5155 cx,
5156 )
5157 .unwrap();
5158 view.paste(&Paste, cx);
5159 assert_eq!(
5160 view.display_text(cx),
5161 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5162 );
5163 assert_eq!(
5164 view.selected_display_ranges(cx),
5165 &[
5166 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5167 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5168 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5169 ]
5170 );
5171 });
5172 }
5173
5174 #[gpui::test]
5175 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5176 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5177 let settings = EditorSettings::test(&cx);
5178 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5179 view.update(cx, |view, cx| {
5180 view.select_all(&SelectAll, cx);
5181 assert_eq!(
5182 view.selected_display_ranges(cx),
5183 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5184 );
5185 });
5186 }
5187
5188 #[gpui::test]
5189 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5190 let settings = EditorSettings::test(&cx);
5191 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5192 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5193 view.update(cx, |view, cx| {
5194 view.select_display_ranges(
5195 &[
5196 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5197 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5198 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5199 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5200 ],
5201 cx,
5202 )
5203 .unwrap();
5204 view.select_line(&SelectLine, cx);
5205 assert_eq!(
5206 view.selected_display_ranges(cx),
5207 vec![
5208 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5209 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5210 ]
5211 );
5212 });
5213
5214 view.update(cx, |view, cx| {
5215 view.select_line(&SelectLine, cx);
5216 assert_eq!(
5217 view.selected_display_ranges(cx),
5218 vec![
5219 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5220 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5221 ]
5222 );
5223 });
5224
5225 view.update(cx, |view, cx| {
5226 view.select_line(&SelectLine, cx);
5227 assert_eq!(
5228 view.selected_display_ranges(cx),
5229 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5230 );
5231 });
5232 }
5233
5234 #[gpui::test]
5235 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5236 let settings = EditorSettings::test(&cx);
5237 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5238 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5239 view.update(cx, |view, cx| {
5240 view.fold_ranges(
5241 vec![
5242 Point::new(0, 2)..Point::new(1, 2),
5243 Point::new(2, 3)..Point::new(4, 1),
5244 Point::new(7, 0)..Point::new(8, 4),
5245 ],
5246 cx,
5247 );
5248 view.select_display_ranges(
5249 &[
5250 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5251 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5252 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5253 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5254 ],
5255 cx,
5256 )
5257 .unwrap();
5258 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5259 });
5260
5261 view.update(cx, |view, cx| {
5262 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5263 assert_eq!(
5264 view.display_text(cx),
5265 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5266 );
5267 assert_eq!(
5268 view.selected_display_ranges(cx),
5269 [
5270 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5271 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5272 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5273 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5274 ]
5275 );
5276 });
5277
5278 view.update(cx, |view, cx| {
5279 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5280 .unwrap();
5281 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5282 assert_eq!(
5283 view.display_text(cx),
5284 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5285 );
5286 assert_eq!(
5287 view.selected_display_ranges(cx),
5288 [
5289 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5290 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5291 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5292 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5293 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5294 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5295 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5296 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5297 ]
5298 );
5299 });
5300 }
5301
5302 #[gpui::test]
5303 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5304 let settings = EditorSettings::test(&cx);
5305 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5306 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5307
5308 view.update(cx, |view, cx| {
5309 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5310 .unwrap();
5311 });
5312 view.update(cx, |view, cx| {
5313 view.add_selection_above(&AddSelectionAbove, cx);
5314 assert_eq!(
5315 view.selected_display_ranges(cx),
5316 vec![
5317 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5318 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5319 ]
5320 );
5321 });
5322
5323 view.update(cx, |view, cx| {
5324 view.add_selection_above(&AddSelectionAbove, cx);
5325 assert_eq!(
5326 view.selected_display_ranges(cx),
5327 vec![
5328 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5329 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5330 ]
5331 );
5332 });
5333
5334 view.update(cx, |view, cx| {
5335 view.add_selection_below(&AddSelectionBelow, cx);
5336 assert_eq!(
5337 view.selected_display_ranges(cx),
5338 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5339 );
5340 });
5341
5342 view.update(cx, |view, cx| {
5343 view.add_selection_below(&AddSelectionBelow, cx);
5344 assert_eq!(
5345 view.selected_display_ranges(cx),
5346 vec![
5347 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5348 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5349 ]
5350 );
5351 });
5352
5353 view.update(cx, |view, cx| {
5354 view.add_selection_below(&AddSelectionBelow, cx);
5355 assert_eq!(
5356 view.selected_display_ranges(cx),
5357 vec![
5358 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5359 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5360 ]
5361 );
5362 });
5363
5364 view.update(cx, |view, cx| {
5365 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5366 .unwrap();
5367 });
5368 view.update(cx, |view, cx| {
5369 view.add_selection_below(&AddSelectionBelow, cx);
5370 assert_eq!(
5371 view.selected_display_ranges(cx),
5372 vec![
5373 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5374 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5375 ]
5376 );
5377 });
5378
5379 view.update(cx, |view, cx| {
5380 view.add_selection_below(&AddSelectionBelow, cx);
5381 assert_eq!(
5382 view.selected_display_ranges(cx),
5383 vec![
5384 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5385 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5386 ]
5387 );
5388 });
5389
5390 view.update(cx, |view, cx| {
5391 view.add_selection_above(&AddSelectionAbove, cx);
5392 assert_eq!(
5393 view.selected_display_ranges(cx),
5394 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5395 );
5396 });
5397
5398 view.update(cx, |view, cx| {
5399 view.add_selection_above(&AddSelectionAbove, cx);
5400 assert_eq!(
5401 view.selected_display_ranges(cx),
5402 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5403 );
5404 });
5405
5406 view.update(cx, |view, cx| {
5407 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5408 .unwrap();
5409 view.add_selection_below(&AddSelectionBelow, cx);
5410 assert_eq!(
5411 view.selected_display_ranges(cx),
5412 vec![
5413 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5414 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5415 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5416 ]
5417 );
5418 });
5419
5420 view.update(cx, |view, cx| {
5421 view.add_selection_below(&AddSelectionBelow, cx);
5422 assert_eq!(
5423 view.selected_display_ranges(cx),
5424 vec![
5425 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5426 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5427 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5428 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5429 ]
5430 );
5431 });
5432
5433 view.update(cx, |view, cx| {
5434 view.add_selection_above(&AddSelectionAbove, cx);
5435 assert_eq!(
5436 view.selected_display_ranges(cx),
5437 vec![
5438 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5439 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5440 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5441 ]
5442 );
5443 });
5444
5445 view.update(cx, |view, cx| {
5446 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5447 .unwrap();
5448 });
5449 view.update(cx, |view, cx| {
5450 view.add_selection_above(&AddSelectionAbove, cx);
5451 assert_eq!(
5452 view.selected_display_ranges(cx),
5453 vec![
5454 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5455 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5456 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5457 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5458 ]
5459 );
5460 });
5461
5462 view.update(cx, |view, cx| {
5463 view.add_selection_below(&AddSelectionBelow, cx);
5464 assert_eq!(
5465 view.selected_display_ranges(cx),
5466 vec![
5467 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5468 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5469 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5470 ]
5471 );
5472 });
5473 }
5474
5475 #[gpui::test]
5476 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5477 let settings = cx.read(EditorSettings::test);
5478 let language = Some(Arc::new(Language::new(
5479 LanguageConfig::default(),
5480 Some(tree_sitter_rust::language()),
5481 )));
5482
5483 let text = r#"
5484 use mod1::mod2::{mod3, mod4};
5485
5486 fn fn_1(param1: bool, param2: &str) {
5487 let var1 = "text";
5488 }
5489 "#
5490 .unindent();
5491
5492 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5493 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5494 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5495 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5496 .await;
5497
5498 view.update(&mut cx, |view, cx| {
5499 view.select_display_ranges(
5500 &[
5501 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5502 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5503 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5504 ],
5505 cx,
5506 )
5507 .unwrap();
5508 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5509 });
5510 assert_eq!(
5511 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5512 &[
5513 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5514 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5515 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5516 ]
5517 );
5518
5519 view.update(&mut cx, |view, cx| {
5520 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5521 });
5522 assert_eq!(
5523 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5524 &[
5525 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5526 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5527 ]
5528 );
5529
5530 view.update(&mut cx, |view, cx| {
5531 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5532 });
5533 assert_eq!(
5534 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5535 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5536 );
5537
5538 // Trying to expand the selected syntax node one more time has no effect.
5539 view.update(&mut cx, |view, cx| {
5540 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5541 });
5542 assert_eq!(
5543 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5544 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5545 );
5546
5547 view.update(&mut cx, |view, cx| {
5548 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5549 });
5550 assert_eq!(
5551 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5552 &[
5553 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5554 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5555 ]
5556 );
5557
5558 view.update(&mut cx, |view, cx| {
5559 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5560 });
5561 assert_eq!(
5562 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5563 &[
5564 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5565 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5566 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5567 ]
5568 );
5569
5570 view.update(&mut cx, |view, cx| {
5571 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5572 });
5573 assert_eq!(
5574 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5575 &[
5576 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5577 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5578 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5579 ]
5580 );
5581
5582 // Trying to shrink the selected syntax node one more time has no effect.
5583 view.update(&mut cx, |view, cx| {
5584 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5585 });
5586 assert_eq!(
5587 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5588 &[
5589 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5590 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5591 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5592 ]
5593 );
5594
5595 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5596 // a fold.
5597 view.update(&mut cx, |view, cx| {
5598 view.fold_ranges(
5599 vec![
5600 Point::new(0, 21)..Point::new(0, 24),
5601 Point::new(3, 20)..Point::new(3, 22),
5602 ],
5603 cx,
5604 );
5605 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5606 });
5607 assert_eq!(
5608 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5609 &[
5610 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5611 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5612 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5613 ]
5614 );
5615 }
5616
5617 #[gpui::test]
5618 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5619 let settings = cx.read(EditorSettings::test);
5620 let language = Some(Arc::new(Language::new(
5621 LanguageConfig {
5622 brackets: vec![
5623 BracketPair {
5624 start: "{".to_string(),
5625 end: "}".to_string(),
5626 close: true,
5627 newline: true,
5628 },
5629 BracketPair {
5630 start: "/*".to_string(),
5631 end: " */".to_string(),
5632 close: true,
5633 newline: true,
5634 },
5635 ],
5636 ..Default::default()
5637 },
5638 Some(tree_sitter_rust::language()),
5639 )));
5640
5641 let text = r#"
5642 a
5643
5644 /
5645
5646 "#
5647 .unindent();
5648
5649 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5650 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5651 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5652 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5653 .await;
5654
5655 view.update(&mut cx, |view, cx| {
5656 view.select_display_ranges(
5657 &[
5658 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5659 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5660 ],
5661 cx,
5662 )
5663 .unwrap();
5664 view.handle_input(&Input("{".to_string()), cx);
5665 view.handle_input(&Input("{".to_string()), cx);
5666 view.handle_input(&Input("{".to_string()), cx);
5667 assert_eq!(
5668 view.text(cx),
5669 "
5670 {{{}}}
5671 {{{}}}
5672 /
5673
5674 "
5675 .unindent()
5676 );
5677
5678 view.move_right(&MoveRight, cx);
5679 view.handle_input(&Input("}".to_string()), cx);
5680 view.handle_input(&Input("}".to_string()), cx);
5681 view.handle_input(&Input("}".to_string()), cx);
5682 assert_eq!(
5683 view.text(cx),
5684 "
5685 {{{}}}}
5686 {{{}}}}
5687 /
5688
5689 "
5690 .unindent()
5691 );
5692
5693 view.undo(&Undo, cx);
5694 view.handle_input(&Input("/".to_string()), cx);
5695 view.handle_input(&Input("*".to_string()), cx);
5696 assert_eq!(
5697 view.text(cx),
5698 "
5699 /* */
5700 /* */
5701 /
5702
5703 "
5704 .unindent()
5705 );
5706
5707 view.undo(&Undo, cx);
5708 view.select_display_ranges(
5709 &[
5710 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5711 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5712 ],
5713 cx,
5714 )
5715 .unwrap();
5716 view.handle_input(&Input("*".to_string()), cx);
5717 assert_eq!(
5718 view.text(cx),
5719 "
5720 a
5721
5722 /*
5723 *
5724 "
5725 .unindent()
5726 );
5727 });
5728 }
5729
5730 #[gpui::test]
5731 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5732 let settings = cx.read(EditorSettings::test);
5733 let language = Some(Arc::new(Language::new(
5734 LanguageConfig {
5735 line_comment: Some("// ".to_string()),
5736 ..Default::default()
5737 },
5738 Some(tree_sitter_rust::language()),
5739 )));
5740
5741 let text = "
5742 fn a() {
5743 //b();
5744 // c();
5745 // d();
5746 }
5747 "
5748 .unindent();
5749
5750 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5751 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5752 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5753
5754 view.update(&mut cx, |editor, cx| {
5755 // If multiple selections intersect a line, the line is only
5756 // toggled once.
5757 editor
5758 .select_display_ranges(
5759 &[
5760 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5761 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5762 ],
5763 cx,
5764 )
5765 .unwrap();
5766 editor.toggle_comments(&ToggleComments, cx);
5767 assert_eq!(
5768 editor.text(cx),
5769 "
5770 fn a() {
5771 b();
5772 c();
5773 d();
5774 }
5775 "
5776 .unindent()
5777 );
5778
5779 // The comment prefix is inserted at the same column for every line
5780 // in a selection.
5781 editor
5782 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5783 .unwrap();
5784 editor.toggle_comments(&ToggleComments, cx);
5785 assert_eq!(
5786 editor.text(cx),
5787 "
5788 fn a() {
5789 // b();
5790 // c();
5791 // d();
5792 }
5793 "
5794 .unindent()
5795 );
5796
5797 // If a selection ends at the beginning of a line, that line is not toggled.
5798 editor
5799 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5800 .unwrap();
5801 editor.toggle_comments(&ToggleComments, cx);
5802 assert_eq!(
5803 editor.text(cx),
5804 "
5805 fn a() {
5806 // b();
5807 c();
5808 // d();
5809 }
5810 "
5811 .unindent()
5812 );
5813 });
5814 }
5815
5816 #[gpui::test]
5817 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5818 let settings = cx.read(EditorSettings::test);
5819 let language = Some(Arc::new(Language::new(
5820 LanguageConfig {
5821 brackets: vec![
5822 BracketPair {
5823 start: "{".to_string(),
5824 end: "}".to_string(),
5825 close: true,
5826 newline: true,
5827 },
5828 BracketPair {
5829 start: "/* ".to_string(),
5830 end: " */".to_string(),
5831 close: true,
5832 newline: true,
5833 },
5834 ],
5835 ..Default::default()
5836 },
5837 Some(tree_sitter_rust::language()),
5838 )));
5839
5840 let text = concat!(
5841 "{ }\n", // Suppress rustfmt
5842 " x\n", //
5843 " /* */\n", //
5844 "x\n", //
5845 "{{} }\n", //
5846 );
5847
5848 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5849 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5850 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5851 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5852 .await;
5853
5854 view.update(&mut cx, |view, cx| {
5855 view.select_display_ranges(
5856 &[
5857 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5858 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5859 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5860 ],
5861 cx,
5862 )
5863 .unwrap();
5864 view.newline(&Newline, cx);
5865
5866 assert_eq!(
5867 view.buffer().read(cx).read(cx).text(),
5868 concat!(
5869 "{ \n", // Suppress rustfmt
5870 "\n", //
5871 "}\n", //
5872 " x\n", //
5873 " /* \n", //
5874 " \n", //
5875 " */\n", //
5876 "x\n", //
5877 "{{} \n", //
5878 "}\n", //
5879 )
5880 );
5881 });
5882 }
5883
5884 impl Editor {
5885 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
5886 &self,
5887 cx: &mut MutableAppContext,
5888 ) -> Vec<Range<D>> {
5889 self.local_selections::<D>(cx)
5890 .iter()
5891 .map(|s| {
5892 if s.reversed {
5893 s.end.clone()..s.start.clone()
5894 } else {
5895 s.start.clone()..s.end.clone()
5896 }
5897 })
5898 .collect()
5899 }
5900
5901 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5902 let display_map = self
5903 .display_map
5904 .update(cx, |display_map, cx| display_map.snapshot(cx));
5905 self.selections
5906 .iter()
5907 .map(|s| {
5908 if s.reversed {
5909 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
5910 } else {
5911 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
5912 }
5913 })
5914 .collect()
5915 }
5916 }
5917
5918 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5919 let point = DisplayPoint::new(row as u32, column as u32);
5920 point..point
5921 }
5922
5923 fn build_editor(
5924 buffer: ModelHandle<MultiBuffer>,
5925 settings: EditorSettings,
5926 cx: &mut ViewContext<Editor>,
5927 ) -> Editor {
5928 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5929 }
5930}
5931
5932trait RangeExt<T> {
5933 fn sorted(&self) -> Range<T>;
5934 fn to_inclusive(&self) -> RangeInclusive<T>;
5935}
5936
5937impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5938 fn sorted(&self) -> Self {
5939 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5940 }
5941
5942 fn to_inclusive(&self) -> RangeInclusive<T> {
5943 self.start.clone()..=self.end.clone()
5944 }
5945}