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