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