1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use clock::ReplicaId;
12pub use display_map::DisplayPoint;
13use display_map::*;
14pub use element::*;
15use gpui::{
16 action,
17 elements::Text,
18 geometry::vector::{vec2f, Vector2F},
19 keymap::Binding,
20 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
21 MutableAppContext, RenderContext, View, ViewContext, WeakViewHandle,
22};
23use items::BufferItemHandle;
24use language::{
25 BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal,
26 SelectionSetId, 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, cx);
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.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.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, cx)
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, cx);
859 let mut selections = self.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, cx)
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.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.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, cx);
1056 if self.selection_count(cx) == 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.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.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.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.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.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.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.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.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(self.selections::<usize>(cx), Some(Autoscroll::Fit), cx);
1562 self.end_transaction(cx);
1563 }
1564
1565 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1566 self.start_transaction(cx);
1567
1568 let selections = self.selections::<Point>(cx);
1569 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1570 let buffer = self.buffer.read(cx).snapshot(cx);
1571
1572 let mut row_delta = 0;
1573 let mut new_cursors = Vec::new();
1574 let mut edit_ranges = Vec::new();
1575 let mut selections = selections.iter().peekable();
1576 while let Some(selection) = selections.next() {
1577 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1578 let goal_display_column = selection.head().to_display_point(&display_map).column();
1579
1580 // Accumulate contiguous regions of rows that we want to delete.
1581 while let Some(next_selection) = selections.peek() {
1582 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1583 if next_rows.start <= rows.end {
1584 rows.end = next_rows.end;
1585 selections.next().unwrap();
1586 } else {
1587 break;
1588 }
1589 }
1590
1591 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1592 let edit_end;
1593 let cursor_buffer_row;
1594 if buffer.max_point().row >= rows.end {
1595 // If there's a line after the range, delete the \n from the end of the row range
1596 // and position the cursor on the next line.
1597 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1598 cursor_buffer_row = rows.start;
1599 } else {
1600 // If there isn't a line after the range, delete the \n from the line before the
1601 // start of the row range and position the cursor there.
1602 edit_start = edit_start.saturating_sub(1);
1603 edit_end = buffer.len();
1604 cursor_buffer_row = rows.start.saturating_sub(1);
1605 }
1606
1607 let mut cursor =
1608 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1609 *cursor.column_mut() =
1610 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1611 row_delta += rows.len() as u32;
1612
1613 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1614 edit_ranges.push(edit_start..edit_end);
1615 }
1616
1617 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1618 let new_selections = new_cursors
1619 .into_iter()
1620 .map(|(id, cursor)| Selection {
1621 id,
1622 start: cursor,
1623 end: cursor,
1624 reversed: false,
1625 goal: SelectionGoal::None,
1626 })
1627 .collect();
1628 self.buffer
1629 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1630 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1631 self.end_transaction(cx);
1632 }
1633
1634 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1635 self.start_transaction(cx);
1636
1637 let mut selections = self.selections::<Point>(cx);
1638 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1639 let buffer = &display_map.buffer_snapshot;
1640
1641 let mut edits = Vec::new();
1642 let mut selections_iter = selections.iter().peekable();
1643 while let Some(selection) = selections_iter.next() {
1644 // Avoid duplicating the same lines twice.
1645 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1646
1647 while let Some(next_selection) = selections_iter.peek() {
1648 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1649 if next_rows.start <= rows.end - 1 {
1650 rows.end = next_rows.end;
1651 selections_iter.next().unwrap();
1652 } else {
1653 break;
1654 }
1655 }
1656
1657 // Copy the text from the selected row region and splice it at the start of the region.
1658 let start = Point::new(rows.start, 0);
1659 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1660 let text = buffer
1661 .text_for_range(start..end)
1662 .chain(Some("\n"))
1663 .collect::<String>();
1664 edits.push((start, text, rows.len() as u32));
1665 }
1666
1667 let mut edits_iter = edits.iter().peekable();
1668 let mut row_delta = 0;
1669 for selection in selections.iter_mut() {
1670 while let Some((point, _, line_count)) = edits_iter.peek() {
1671 if *point <= selection.start {
1672 row_delta += line_count;
1673 edits_iter.next();
1674 } else {
1675 break;
1676 }
1677 }
1678 selection.start.row += row_delta;
1679 selection.end.row += row_delta;
1680 }
1681
1682 self.buffer.update(cx, |buffer, cx| {
1683 for (point, text, _) in edits.into_iter().rev() {
1684 buffer.edit(Some(point..point), text, cx);
1685 }
1686 });
1687
1688 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1689 self.end_transaction(cx);
1690 }
1691
1692 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1693 self.start_transaction(cx);
1694
1695 let selections = self.selections::<Point>(cx);
1696 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1697 let buffer = self.buffer.read(cx).snapshot(cx);
1698
1699 let mut edits = Vec::new();
1700 let mut new_selection_ranges = Vec::new();
1701 let mut old_folds = Vec::new();
1702 let mut new_folds = Vec::new();
1703
1704 let mut selections = selections.iter().peekable();
1705 let mut contiguous_selections = Vec::new();
1706 while let Some(selection) = selections.next() {
1707 // Accumulate contiguous regions of rows that we want to move.
1708 contiguous_selections.push(selection.point_range(&buffer));
1709 let SpannedRows {
1710 mut buffer_rows,
1711 mut display_rows,
1712 } = selection.spanned_rows(false, &display_map);
1713
1714 while let Some(next_selection) = selections.peek() {
1715 let SpannedRows {
1716 buffer_rows: next_buffer_rows,
1717 display_rows: next_display_rows,
1718 } = next_selection.spanned_rows(false, &display_map);
1719 if next_buffer_rows.start <= buffer_rows.end {
1720 buffer_rows.end = next_buffer_rows.end;
1721 display_rows.end = next_display_rows.end;
1722 contiguous_selections.push(next_selection.point_range(&buffer));
1723 selections.next().unwrap();
1724 } else {
1725 break;
1726 }
1727 }
1728
1729 // Cut the text from the selected rows and paste it at the start of the previous line.
1730 if display_rows.start != 0 {
1731 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1732 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1733 .to_offset(&buffer);
1734
1735 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1736 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1737 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(&buffer);
1738
1739 let mut text = String::new();
1740 text.extend(buffer.text_for_range(start..end));
1741 text.push('\n');
1742 edits.push((
1743 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1744 text,
1745 ));
1746 edits.push((start - 1..end, String::new()));
1747
1748 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1749
1750 // Move selections up.
1751 for range in &mut contiguous_selections {
1752 range.start.row -= row_delta;
1753 range.end.row -= row_delta;
1754 }
1755
1756 // Move folds up.
1757 old_folds.push(start..end);
1758 for fold in display_map.folds_in_range(start..end) {
1759 let mut start = fold.start.to_point(&buffer);
1760 let mut end = fold.end.to_point(&buffer);
1761 start.row -= row_delta;
1762 end.row -= row_delta;
1763 new_folds.push(start..end);
1764 }
1765 }
1766
1767 new_selection_ranges.extend(contiguous_selections.drain(..));
1768 }
1769
1770 self.unfold_ranges(old_folds, cx);
1771 self.buffer.update(cx, |buffer, cx| {
1772 for (range, text) in edits.into_iter().rev() {
1773 buffer.edit(Some(range), text, cx);
1774 }
1775 });
1776 self.fold_ranges(new_folds, cx);
1777 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1778
1779 self.end_transaction(cx);
1780 }
1781
1782 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1783 self.start_transaction(cx);
1784
1785 let selections = self.selections::<Point>(cx);
1786 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1787 let buffer = self.buffer.read(cx).snapshot(cx);
1788
1789 let mut edits = Vec::new();
1790 let mut new_selection_ranges = Vec::new();
1791 let mut old_folds = Vec::new();
1792 let mut new_folds = Vec::new();
1793
1794 let mut selections = selections.iter().peekable();
1795 let mut contiguous_selections = Vec::new();
1796 while let Some(selection) = selections.next() {
1797 // Accumulate contiguous regions of rows that we want to move.
1798 contiguous_selections.push(selection.point_range(&buffer));
1799 let SpannedRows {
1800 mut buffer_rows,
1801 mut display_rows,
1802 } = selection.spanned_rows(false, &display_map);
1803 while let Some(next_selection) = selections.peek() {
1804 let SpannedRows {
1805 buffer_rows: next_buffer_rows,
1806 display_rows: next_display_rows,
1807 } = next_selection.spanned_rows(false, &display_map);
1808 if next_buffer_rows.start <= buffer_rows.end {
1809 buffer_rows.end = next_buffer_rows.end;
1810 display_rows.end = next_display_rows.end;
1811 contiguous_selections.push(next_selection.point_range(&buffer));
1812 selections.next().unwrap();
1813 } else {
1814 break;
1815 }
1816 }
1817
1818 // Cut the text from the selected rows and paste it at the end of the next line.
1819 if display_rows.end <= display_map.max_point().row() {
1820 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1821 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1822 .to_offset(&buffer);
1823
1824 let next_row_display_end =
1825 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1826 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1827 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(&buffer);
1828
1829 let mut text = String::new();
1830 text.push('\n');
1831 text.extend(buffer.text_for_range(start..end));
1832 edits.push((start..end + 1, String::new()));
1833 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1834
1835 let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1836
1837 // Move selections down.
1838 for range in &mut contiguous_selections {
1839 range.start.row += row_delta;
1840 range.end.row += row_delta;
1841 }
1842
1843 // Move folds down.
1844 old_folds.push(start..end);
1845 for fold in display_map.folds_in_range(start..end) {
1846 let mut start = fold.start.to_point(&buffer);
1847 let mut end = fold.end.to_point(&buffer);
1848 start.row += row_delta;
1849 end.row += row_delta;
1850 new_folds.push(start..end);
1851 }
1852 }
1853
1854 new_selection_ranges.extend(contiguous_selections.drain(..));
1855 }
1856
1857 self.unfold_ranges(old_folds, cx);
1858 self.buffer.update(cx, |buffer, cx| {
1859 for (range, text) in edits.into_iter().rev() {
1860 buffer.edit(Some(range), text, cx);
1861 }
1862 });
1863 self.fold_ranges(new_folds, cx);
1864 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1865
1866 self.end_transaction(cx);
1867 }
1868
1869 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1870 self.start_transaction(cx);
1871 let mut text = String::new();
1872 let mut selections = self.selections::<Point>(cx);
1873 let mut clipboard_selections = Vec::with_capacity(selections.len());
1874 {
1875 let buffer = self.buffer.read(cx).read(cx);
1876 let max_point = buffer.max_point();
1877 for selection in &mut selections {
1878 let is_entire_line = selection.is_empty();
1879 if is_entire_line {
1880 selection.start = Point::new(selection.start.row, 0);
1881 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1882 }
1883 let mut len = 0;
1884 for chunk in buffer.text_for_range(selection.start..selection.end) {
1885 text.push_str(chunk);
1886 len += chunk.len();
1887 }
1888 clipboard_selections.push(ClipboardSelection {
1889 len,
1890 is_entire_line,
1891 });
1892 }
1893 }
1894 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1895 self.insert("", cx);
1896 self.end_transaction(cx);
1897
1898 cx.as_mut()
1899 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1900 }
1901
1902 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1903 let selections = self.selections::<Point>(cx);
1904 let mut text = String::new();
1905 let mut clipboard_selections = Vec::with_capacity(selections.len());
1906 {
1907 let buffer = self.buffer.read(cx).read(cx);
1908 let max_point = buffer.max_point();
1909 for selection in selections.iter() {
1910 let mut start = selection.start;
1911 let mut end = selection.end;
1912 let is_entire_line = selection.is_empty();
1913 if is_entire_line {
1914 start = Point::new(start.row, 0);
1915 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1916 }
1917 let mut len = 0;
1918 for chunk in buffer.text_for_range(start..end) {
1919 text.push_str(chunk);
1920 len += chunk.len();
1921 }
1922 clipboard_selections.push(ClipboardSelection {
1923 len,
1924 is_entire_line,
1925 });
1926 }
1927 }
1928
1929 cx.as_mut()
1930 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1931 }
1932
1933 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1934 if let Some(item) = cx.as_mut().read_from_clipboard() {
1935 let clipboard_text = item.text();
1936 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1937 let mut selections = self.selections::<usize>(cx);
1938 let all_selections_were_entire_line =
1939 clipboard_selections.iter().all(|s| s.is_entire_line);
1940 if clipboard_selections.len() != selections.len() {
1941 clipboard_selections.clear();
1942 }
1943
1944 let mut delta = 0_isize;
1945 let mut start_offset = 0;
1946 for (i, selection) in selections.iter_mut().enumerate() {
1947 let to_insert;
1948 let entire_line;
1949 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1950 let end_offset = start_offset + clipboard_selection.len;
1951 to_insert = &clipboard_text[start_offset..end_offset];
1952 entire_line = clipboard_selection.is_entire_line;
1953 start_offset = end_offset
1954 } else {
1955 to_insert = clipboard_text.as_str();
1956 entire_line = all_selections_were_entire_line;
1957 }
1958
1959 selection.start = (selection.start as isize + delta) as usize;
1960 selection.end = (selection.end as isize + delta) as usize;
1961
1962 self.buffer.update(cx, |buffer, cx| {
1963 // If the corresponding selection was empty when this slice of the
1964 // clipboard text was written, then the entire line containing the
1965 // selection was copied. If this selection is also currently empty,
1966 // then paste the line before the current line of the buffer.
1967 let range = if selection.is_empty() && entire_line {
1968 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1969 let line_start = selection.start - column;
1970 line_start..line_start
1971 } else {
1972 selection.start..selection.end
1973 };
1974
1975 delta += to_insert.len() as isize - range.len() as isize;
1976 buffer.edit([range], to_insert, cx);
1977 selection.start += to_insert.len();
1978 selection.end = selection.start;
1979 });
1980 }
1981 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1982 } else {
1983 self.insert(clipboard_text, cx);
1984 }
1985 }
1986 }
1987
1988 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1989 self.buffer.update(cx, |buffer, cx| buffer.undo(cx));
1990 self.request_autoscroll(Autoscroll::Fit, cx);
1991 }
1992
1993 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
1994 self.buffer.update(cx, |buffer, cx| buffer.redo(cx));
1995 self.request_autoscroll(Autoscroll::Fit, cx);
1996 }
1997
1998 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
1999 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2000 let mut selections = self.selections::<Point>(cx);
2001 for selection in &mut selections {
2002 let start = selection.start.to_display_point(&display_map);
2003 let end = selection.end.to_display_point(&display_map);
2004
2005 if start != end {
2006 selection.end = selection.start.clone();
2007 } else {
2008 let cursor = movement::left(&display_map, start)
2009 .unwrap()
2010 .to_point(&display_map);
2011 selection.start = cursor.clone();
2012 selection.end = cursor;
2013 }
2014 selection.reversed = false;
2015 selection.goal = SelectionGoal::None;
2016 }
2017 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2018 }
2019
2020 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2021 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2022 let mut selections = self.selections::<Point>(cx);
2023 for selection in &mut selections {
2024 let head = selection.head().to_display_point(&display_map);
2025 let cursor = movement::left(&display_map, head)
2026 .unwrap()
2027 .to_point(&display_map);
2028 selection.set_head(cursor);
2029 selection.goal = SelectionGoal::None;
2030 }
2031 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2032 }
2033
2034 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2035 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2036 let mut selections = self.selections::<Point>(cx);
2037 for selection in &mut selections {
2038 let start = selection.start.to_display_point(&display_map);
2039 let end = selection.end.to_display_point(&display_map);
2040
2041 if start != end {
2042 selection.start = selection.end.clone();
2043 } else {
2044 let cursor = movement::right(&display_map, end)
2045 .unwrap()
2046 .to_point(&display_map);
2047 selection.start = cursor;
2048 selection.end = cursor;
2049 }
2050 selection.reversed = false;
2051 selection.goal = SelectionGoal::None;
2052 }
2053 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2054 }
2055
2056 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2057 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2058 let mut selections = self.selections::<Point>(cx);
2059 for selection in &mut selections {
2060 let head = selection.head().to_display_point(&display_map);
2061 let cursor = movement::right(&display_map, head)
2062 .unwrap()
2063 .to_point(&display_map);
2064 selection.set_head(cursor);
2065 selection.goal = SelectionGoal::None;
2066 }
2067 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2068 }
2069
2070 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2071 if matches!(self.mode, EditorMode::SingleLine) {
2072 cx.propagate_action();
2073 return;
2074 }
2075
2076 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2077 let mut selections = self.selections::<Point>(cx);
2078 for selection in &mut selections {
2079 let start = selection.start.to_display_point(&display_map);
2080 let end = selection.end.to_display_point(&display_map);
2081 if start != end {
2082 selection.goal = SelectionGoal::None;
2083 }
2084
2085 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2086 let cursor = start.to_point(&display_map);
2087 selection.start = cursor;
2088 selection.end = cursor;
2089 selection.goal = goal;
2090 selection.reversed = false;
2091 }
2092 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2093 }
2094
2095 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2096 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2097 let mut selections = self.selections::<Point>(cx);
2098 for selection in &mut selections {
2099 let head = selection.head().to_display_point(&display_map);
2100 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2101 let cursor = head.to_point(&display_map);
2102 selection.set_head(cursor);
2103 selection.goal = goal;
2104 }
2105 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2106 }
2107
2108 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2109 if matches!(self.mode, EditorMode::SingleLine) {
2110 cx.propagate_action();
2111 return;
2112 }
2113
2114 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2115 let mut selections = self.selections::<Point>(cx);
2116 for selection in &mut selections {
2117 let start = selection.start.to_display_point(&display_map);
2118 let end = selection.end.to_display_point(&display_map);
2119 if start != end {
2120 selection.goal = SelectionGoal::None;
2121 }
2122
2123 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2124 let cursor = start.to_point(&display_map);
2125 selection.start = cursor;
2126 selection.end = cursor;
2127 selection.goal = goal;
2128 selection.reversed = false;
2129 }
2130 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2131 }
2132
2133 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2134 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2135 let mut selections = self.selections::<Point>(cx);
2136 for selection in &mut selections {
2137 let head = selection.head().to_display_point(&display_map);
2138 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2139 let cursor = head.to_point(&display_map);
2140 selection.set_head(cursor);
2141 selection.goal = goal;
2142 }
2143 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2144 }
2145
2146 pub fn move_to_previous_word_boundary(
2147 &mut self,
2148 _: &MoveToPreviousWordBoundary,
2149 cx: &mut ViewContext<Self>,
2150 ) {
2151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2152 let mut selections = self.selections::<Point>(cx);
2153 for selection in &mut selections {
2154 let head = selection.head().to_display_point(&display_map);
2155 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2156 selection.start = cursor.clone();
2157 selection.end = cursor;
2158 selection.reversed = false;
2159 selection.goal = SelectionGoal::None;
2160 }
2161 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2162 }
2163
2164 pub fn select_to_previous_word_boundary(
2165 &mut self,
2166 _: &SelectToPreviousWordBoundary,
2167 cx: &mut ViewContext<Self>,
2168 ) {
2169 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2170 let mut selections = self.selections::<Point>(cx);
2171 for selection in &mut selections {
2172 let head = selection.head().to_display_point(&display_map);
2173 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2174 selection.set_head(cursor);
2175 selection.goal = SelectionGoal::None;
2176 }
2177 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2178 }
2179
2180 pub fn delete_to_previous_word_boundary(
2181 &mut self,
2182 _: &DeleteToPreviousWordBoundary,
2183 cx: &mut ViewContext<Self>,
2184 ) {
2185 self.start_transaction(cx);
2186 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2187 let mut selections = self.selections::<Point>(cx);
2188 for selection in &mut selections {
2189 if selection.is_empty() {
2190 let head = selection.head().to_display_point(&display_map);
2191 let cursor =
2192 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2193 selection.set_head(cursor);
2194 selection.goal = SelectionGoal::None;
2195 }
2196 }
2197 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2198 self.insert("", cx);
2199 self.end_transaction(cx);
2200 }
2201
2202 pub fn move_to_next_word_boundary(
2203 &mut self,
2204 _: &MoveToNextWordBoundary,
2205 cx: &mut ViewContext<Self>,
2206 ) {
2207 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2208 let mut selections = self.selections::<Point>(cx);
2209 for selection in &mut selections {
2210 let head = selection.head().to_display_point(&display_map);
2211 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2212 selection.start = cursor;
2213 selection.end = cursor;
2214 selection.reversed = false;
2215 selection.goal = SelectionGoal::None;
2216 }
2217 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2218 }
2219
2220 pub fn select_to_next_word_boundary(
2221 &mut self,
2222 _: &SelectToNextWordBoundary,
2223 cx: &mut ViewContext<Self>,
2224 ) {
2225 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2226 let mut selections = self.selections::<Point>(cx);
2227 for selection in &mut selections {
2228 let head = selection.head().to_display_point(&display_map);
2229 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2230 selection.set_head(cursor);
2231 selection.goal = SelectionGoal::None;
2232 }
2233 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2234 }
2235
2236 pub fn delete_to_next_word_boundary(
2237 &mut self,
2238 _: &DeleteToNextWordBoundary,
2239 cx: &mut ViewContext<Self>,
2240 ) {
2241 self.start_transaction(cx);
2242 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2243 let mut selections = self.selections::<Point>(cx);
2244 for selection in &mut selections {
2245 if selection.is_empty() {
2246 let head = selection.head().to_display_point(&display_map);
2247 let cursor =
2248 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2249 selection.set_head(cursor);
2250 selection.goal = SelectionGoal::None;
2251 }
2252 }
2253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2254 self.insert("", cx);
2255 self.end_transaction(cx);
2256 }
2257
2258 pub fn move_to_beginning_of_line(
2259 &mut self,
2260 _: &MoveToBeginningOfLine,
2261 cx: &mut ViewContext<Self>,
2262 ) {
2263 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2264 let mut selections = self.selections::<Point>(cx);
2265 for selection in &mut selections {
2266 let head = selection.head().to_display_point(&display_map);
2267 let new_head = movement::line_beginning(&display_map, head, true);
2268 let cursor = new_head.to_point(&display_map);
2269 selection.start = cursor;
2270 selection.end = cursor;
2271 selection.reversed = false;
2272 selection.goal = SelectionGoal::None;
2273 }
2274 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2275 }
2276
2277 pub fn select_to_beginning_of_line(
2278 &mut self,
2279 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2280 cx: &mut ViewContext<Self>,
2281 ) {
2282 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2283 let mut selections = self.selections::<Point>(cx);
2284 for selection in &mut selections {
2285 let head = selection.head().to_display_point(&display_map);
2286 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2287 selection.set_head(new_head.to_point(&display_map));
2288 selection.goal = SelectionGoal::None;
2289 }
2290 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2291 }
2292
2293 pub fn delete_to_beginning_of_line(
2294 &mut self,
2295 _: &DeleteToBeginningOfLine,
2296 cx: &mut ViewContext<Self>,
2297 ) {
2298 self.start_transaction(cx);
2299 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2300 self.backspace(&Backspace, cx);
2301 self.end_transaction(cx);
2302 }
2303
2304 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2305 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2306 let mut selections = self.selections::<Point>(cx);
2307 {
2308 for selection in &mut selections {
2309 let head = selection.head().to_display_point(&display_map);
2310 let new_head = movement::line_end(&display_map, head);
2311 let anchor = new_head.to_point(&display_map);
2312 selection.start = anchor.clone();
2313 selection.end = anchor;
2314 selection.reversed = false;
2315 selection.goal = SelectionGoal::None;
2316 }
2317 }
2318 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2319 }
2320
2321 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2322 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2323 let mut selections = self.selections::<Point>(cx);
2324 for selection in &mut selections {
2325 let head = selection.head().to_display_point(&display_map);
2326 let new_head = movement::line_end(&display_map, head);
2327 selection.set_head(new_head.to_point(&display_map));
2328 selection.goal = SelectionGoal::None;
2329 }
2330 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2331 }
2332
2333 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2334 self.start_transaction(cx);
2335 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2336 self.delete(&Delete, cx);
2337 self.end_transaction(cx);
2338 }
2339
2340 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2341 self.start_transaction(cx);
2342 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2343 self.cut(&Cut, cx);
2344 self.end_transaction(cx);
2345 }
2346
2347 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2348 let selection = Selection {
2349 id: post_inc(&mut self.next_selection_id),
2350 start: 0,
2351 end: 0,
2352 reversed: false,
2353 goal: SelectionGoal::None,
2354 };
2355 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2356 }
2357
2358 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2359 let mut selection = self.selections::<Point>(cx).last().unwrap().clone();
2360 selection.set_head(Point::zero());
2361 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2362 }
2363
2364 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2365 let cursor = self.buffer.read(cx).read(cx).len();
2366 let selection = Selection {
2367 id: post_inc(&mut self.next_selection_id),
2368 start: cursor,
2369 end: cursor,
2370 reversed: false,
2371 goal: SelectionGoal::None,
2372 };
2373 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2374 }
2375
2376 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2377 let mut selection = self.selections::<usize>(cx).first().unwrap().clone();
2378 selection.set_head(self.buffer.read(cx).read(cx).len());
2379 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2380 }
2381
2382 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2383 let selection = Selection {
2384 id: post_inc(&mut self.next_selection_id),
2385 start: 0,
2386 end: self.buffer.read(cx).read(cx).len(),
2387 reversed: false,
2388 goal: SelectionGoal::None,
2389 };
2390 self.update_selections(vec![selection], None, cx);
2391 }
2392
2393 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2394 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2395 let mut selections = self.selections::<Point>(cx);
2396 let max_point = display_map.buffer_snapshot.max_point();
2397 for selection in &mut selections {
2398 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2399 selection.start = Point::new(rows.start, 0);
2400 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2401 selection.reversed = false;
2402 }
2403 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2404 }
2405
2406 pub fn split_selection_into_lines(
2407 &mut self,
2408 _: &SplitSelectionIntoLines,
2409 cx: &mut ViewContext<Self>,
2410 ) {
2411 let mut to_unfold = Vec::new();
2412 let mut new_selections = Vec::new();
2413 {
2414 let selections = self.selections::<Point>(cx);
2415 let buffer = self.buffer.read(cx).read(cx);
2416 for selection in selections {
2417 for row in selection.start.row..selection.end.row {
2418 let cursor = Point::new(row, buffer.line_len(row));
2419 new_selections.push(Selection {
2420 id: post_inc(&mut self.next_selection_id),
2421 start: cursor,
2422 end: cursor,
2423 reversed: false,
2424 goal: SelectionGoal::None,
2425 });
2426 }
2427 new_selections.push(Selection {
2428 id: selection.id,
2429 start: selection.end,
2430 end: selection.end,
2431 reversed: false,
2432 goal: SelectionGoal::None,
2433 });
2434 to_unfold.push(selection.start..selection.end);
2435 }
2436 }
2437 self.unfold_ranges(to_unfold, cx);
2438 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2439 }
2440
2441 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2442 self.add_selection(true, cx);
2443 }
2444
2445 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2446 self.add_selection(false, cx);
2447 }
2448
2449 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2450 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2451 let mut selections = self.selections::<Point>(cx);
2452 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2453 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2454 let range = oldest_selection.display_range(&display_map).sorted();
2455 let columns = cmp::min(range.start.column(), range.end.column())
2456 ..cmp::max(range.start.column(), range.end.column());
2457
2458 selections.clear();
2459 let mut stack = Vec::new();
2460 for row in range.start.row()..=range.end.row() {
2461 if let Some(selection) = self.build_columnar_selection(
2462 &display_map,
2463 row,
2464 &columns,
2465 oldest_selection.reversed,
2466 ) {
2467 stack.push(selection.id);
2468 selections.push(selection);
2469 }
2470 }
2471
2472 if above {
2473 stack.reverse();
2474 }
2475
2476 AddSelectionsState { above, stack }
2477 });
2478
2479 let last_added_selection = *state.stack.last().unwrap();
2480 let mut new_selections = Vec::new();
2481 if above == state.above {
2482 let end_row = if above {
2483 0
2484 } else {
2485 display_map.max_point().row()
2486 };
2487
2488 'outer: for selection in selections {
2489 if selection.id == last_added_selection {
2490 let range = selection.display_range(&display_map).sorted();
2491 debug_assert_eq!(range.start.row(), range.end.row());
2492 let mut row = range.start.row();
2493 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2494 {
2495 start..end
2496 } else {
2497 cmp::min(range.start.column(), range.end.column())
2498 ..cmp::max(range.start.column(), range.end.column())
2499 };
2500
2501 while row != end_row {
2502 if above {
2503 row -= 1;
2504 } else {
2505 row += 1;
2506 }
2507
2508 if let Some(new_selection) = self.build_columnar_selection(
2509 &display_map,
2510 row,
2511 &columns,
2512 selection.reversed,
2513 ) {
2514 state.stack.push(new_selection.id);
2515 if above {
2516 new_selections.push(new_selection);
2517 new_selections.push(selection);
2518 } else {
2519 new_selections.push(selection);
2520 new_selections.push(new_selection);
2521 }
2522
2523 continue 'outer;
2524 }
2525 }
2526 }
2527
2528 new_selections.push(selection);
2529 }
2530 } else {
2531 new_selections = selections;
2532 new_selections.retain(|s| s.id != last_added_selection);
2533 state.stack.pop();
2534 }
2535
2536 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2537 if state.stack.len() > 1 {
2538 self.add_selections_state = Some(state);
2539 }
2540 }
2541
2542 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2543 let replace_newest = action.0;
2544 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2545 let buffer = &display_map.buffer_snapshot;
2546 let mut selections = self.selections::<usize>(cx);
2547 if let Some(mut select_next_state) = self.select_next_state.take() {
2548 let query = &select_next_state.query;
2549 if !select_next_state.done {
2550 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2551 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2552 let mut next_selected_range = None;
2553
2554 let bytes_after_last_selection =
2555 buffer.bytes_in_range(last_selection.end..buffer.len());
2556 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2557 let query_matches = query
2558 .stream_find_iter(bytes_after_last_selection)
2559 .map(|result| (last_selection.end, result))
2560 .chain(
2561 query
2562 .stream_find_iter(bytes_before_first_selection)
2563 .map(|result| (0, result)),
2564 );
2565 for (start_offset, query_match) in query_matches {
2566 let query_match = query_match.unwrap(); // can only fail due to I/O
2567 let offset_range =
2568 start_offset + query_match.start()..start_offset + query_match.end();
2569 let display_range = offset_range.start.to_display_point(&display_map)
2570 ..offset_range.end.to_display_point(&display_map);
2571
2572 if !select_next_state.wordwise
2573 || (!movement::is_inside_word(&display_map, display_range.start)
2574 && !movement::is_inside_word(&display_map, display_range.end))
2575 {
2576 next_selected_range = Some(offset_range);
2577 break;
2578 }
2579 }
2580
2581 if let Some(next_selected_range) = next_selected_range {
2582 if replace_newest {
2583 if let Some(newest_id) =
2584 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2585 {
2586 selections.retain(|s| s.id != newest_id);
2587 }
2588 }
2589 selections.push(Selection {
2590 id: post_inc(&mut self.next_selection_id),
2591 start: next_selected_range.start,
2592 end: next_selected_range.end,
2593 reversed: false,
2594 goal: SelectionGoal::None,
2595 });
2596 selections.sort_unstable_by_key(|s| s.start);
2597 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2598 } else {
2599 select_next_state.done = true;
2600 }
2601 }
2602
2603 self.select_next_state = Some(select_next_state);
2604 } else if selections.len() == 1 {
2605 let selection = selections.last_mut().unwrap();
2606 if selection.start == selection.end {
2607 let word_range = movement::surrounding_word(
2608 &display_map,
2609 selection.start.to_display_point(&display_map),
2610 );
2611 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2612 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2613 selection.goal = SelectionGoal::None;
2614 selection.reversed = false;
2615
2616 let query = buffer
2617 .text_for_range(selection.start..selection.end)
2618 .collect::<String>();
2619 let select_state = SelectNextState {
2620 query: AhoCorasick::new_auto_configured(&[query]),
2621 wordwise: true,
2622 done: false,
2623 };
2624 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2625 self.select_next_state = Some(select_state);
2626 } else {
2627 let query = buffer
2628 .text_for_range(selection.start..selection.end)
2629 .collect::<String>();
2630 self.select_next_state = Some(SelectNextState {
2631 query: AhoCorasick::new_auto_configured(&[query]),
2632 wordwise: false,
2633 done: false,
2634 });
2635 self.select_next(action, cx);
2636 }
2637 }
2638 }
2639
2640 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2641 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2642 // as that portion won't be used for detecting if a line is a comment.
2643 let full_comment_prefix =
2644 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2645 prefix.to_string()
2646 } else {
2647 return;
2648 };
2649 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2650 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2651
2652 self.start_transaction(cx);
2653 let mut selections = self.selections::<Point>(cx);
2654 let mut all_selection_lines_are_comments = true;
2655 let mut edit_ranges = Vec::new();
2656 let mut last_toggled_row = None;
2657 self.buffer.update(cx, |buffer, cx| {
2658 for selection in &mut selections {
2659 edit_ranges.clear();
2660 let snapshot = buffer.snapshot(cx);
2661
2662 let end_row =
2663 if selection.end.row > selection.start.row && selection.end.column == 0 {
2664 selection.end.row
2665 } else {
2666 selection.end.row + 1
2667 };
2668
2669 for row in selection.start.row..end_row {
2670 // If multiple selections contain a given row, avoid processing that
2671 // row more than once.
2672 if last_toggled_row == Some(row) {
2673 continue;
2674 } else {
2675 last_toggled_row = Some(row);
2676 }
2677
2678 if snapshot.is_line_blank(row) {
2679 continue;
2680 }
2681
2682 let start = Point::new(row, snapshot.indent_column_for_line(row));
2683 let mut line_bytes = snapshot
2684 .bytes_in_range(start..snapshot.max_point())
2685 .flatten()
2686 .copied();
2687
2688 // If this line currently begins with the line comment prefix, then record
2689 // the range containing the prefix.
2690 if all_selection_lines_are_comments
2691 && line_bytes
2692 .by_ref()
2693 .take(comment_prefix.len())
2694 .eq(comment_prefix.bytes())
2695 {
2696 // Include any whitespace that matches the comment prefix.
2697 let matching_whitespace_len = line_bytes
2698 .zip(comment_prefix_whitespace.bytes())
2699 .take_while(|(a, b)| a == b)
2700 .count() as u32;
2701 let end = Point::new(
2702 row,
2703 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2704 );
2705 edit_ranges.push(start..end);
2706 }
2707 // If this line does not begin with the line comment prefix, then record
2708 // the position where the prefix should be inserted.
2709 else {
2710 all_selection_lines_are_comments = false;
2711 edit_ranges.push(start..start);
2712 }
2713 }
2714
2715 if !edit_ranges.is_empty() {
2716 if all_selection_lines_are_comments {
2717 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2718 } else {
2719 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2720 let edit_ranges = edit_ranges.iter().map(|range| {
2721 let position = Point::new(range.start.row, min_column);
2722 position..position
2723 });
2724 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2725 }
2726 }
2727 }
2728 });
2729
2730 self.update_selections(self.selections::<usize>(cx), Some(Autoscroll::Fit), cx);
2731 self.end_transaction(cx);
2732 }
2733
2734 pub fn select_larger_syntax_node(
2735 &mut self,
2736 _: &SelectLargerSyntaxNode,
2737 cx: &mut ViewContext<Self>,
2738 ) {
2739 let old_selections = self.selections::<usize>(cx).into_boxed_slice();
2740 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2741 let buffer = self.buffer.read(cx).snapshot(cx);
2742
2743 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2744 let mut selected_larger_node = false;
2745 let mut new_selections = old_selections
2746 .iter()
2747 .map(|selection| {
2748 let old_range = selection.start..selection.end;
2749 let mut new_range = old_range.clone();
2750 while let Some(containing_range) =
2751 buffer.range_for_syntax_ancestor(new_range.clone())
2752 {
2753 new_range = containing_range;
2754 if !display_map.intersects_fold(new_range.start)
2755 && !display_map.intersects_fold(new_range.end)
2756 {
2757 break;
2758 }
2759 }
2760
2761 selected_larger_node |= new_range != old_range;
2762 Selection {
2763 id: selection.id,
2764 start: new_range.start,
2765 end: new_range.end,
2766 goal: SelectionGoal::None,
2767 reversed: selection.reversed,
2768 }
2769 })
2770 .collect::<Vec<_>>();
2771
2772 if selected_larger_node {
2773 stack.push(old_selections);
2774 new_selections.sort_unstable_by_key(|selection| selection.start);
2775 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2776 }
2777 self.select_larger_syntax_node_stack = stack;
2778 }
2779
2780 pub fn select_smaller_syntax_node(
2781 &mut self,
2782 _: &SelectSmallerSyntaxNode,
2783 cx: &mut ViewContext<Self>,
2784 ) {
2785 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2786 if let Some(selections) = stack.pop() {
2787 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2788 }
2789 self.select_larger_syntax_node_stack = stack;
2790 }
2791
2792 pub fn move_to_enclosing_bracket(
2793 &mut self,
2794 _: &MoveToEnclosingBracket,
2795 cx: &mut ViewContext<Self>,
2796 ) {
2797 let mut selections = self.selections::<usize>(cx);
2798 let buffer = self.buffer.read(cx).snapshot(cx);
2799 for selection in &mut selections {
2800 if let Some((open_range, close_range)) =
2801 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2802 {
2803 let close_range = close_range.to_inclusive();
2804 let destination = if close_range.contains(&selection.start)
2805 && close_range.contains(&selection.end)
2806 {
2807 open_range.end
2808 } else {
2809 *close_range.start()
2810 };
2811 selection.start = destination;
2812 selection.end = destination;
2813 }
2814 }
2815
2816 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2817 }
2818
2819 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2820 let buffer = self.buffer.read(cx).snapshot(cx);
2821 let selection = self.newest_selection::<usize>(&buffer, cx);
2822 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2823 active_diagnostics
2824 .primary_range
2825 .to_offset(&buffer)
2826 .to_inclusive()
2827 });
2828 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2829 if active_primary_range.contains(&selection.head()) {
2830 *active_primary_range.end()
2831 } else {
2832 selection.head()
2833 }
2834 } else {
2835 selection.head()
2836 };
2837
2838 loop {
2839 let next_group = buffer
2840 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2841 .find_map(|entry| {
2842 if entry.diagnostic.is_primary
2843 && !entry.range.is_empty()
2844 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2845 {
2846 Some((entry.range, entry.diagnostic.group_id))
2847 } else {
2848 None
2849 }
2850 });
2851
2852 if let Some((primary_range, group_id)) = next_group {
2853 self.activate_diagnostics(group_id, cx);
2854 self.update_selections(
2855 vec![Selection {
2856 id: selection.id,
2857 start: primary_range.start,
2858 end: primary_range.start,
2859 reversed: false,
2860 goal: SelectionGoal::None,
2861 }],
2862 Some(Autoscroll::Center),
2863 cx,
2864 );
2865 break;
2866 } else if search_start == 0 {
2867 break;
2868 } else {
2869 // Cycle around to the start of the buffer.
2870 search_start = 0;
2871 }
2872 }
2873 }
2874
2875 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2876 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2877 let buffer = self.buffer.read(cx).snapshot(cx);
2878 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2879 let is_valid = buffer
2880 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2881 .any(|entry| {
2882 entry.diagnostic.is_primary
2883 && !entry.range.is_empty()
2884 && entry.range.start == primary_range_start
2885 && entry.diagnostic.message == active_diagnostics.primary_message
2886 });
2887
2888 if is_valid != active_diagnostics.is_valid {
2889 active_diagnostics.is_valid = is_valid;
2890 let mut new_styles = HashMap::new();
2891 for (block_id, diagnostic) in &active_diagnostics.blocks {
2892 let build_settings = self.build_settings.clone();
2893 let diagnostic = diagnostic.clone();
2894 new_styles.insert(*block_id, move |cx: &BlockContext| {
2895 let diagnostic = diagnostic.clone();
2896 let settings = build_settings.borrow()(cx.cx);
2897 render_diagnostic(diagnostic, &settings.style, is_valid, cx.anchor_x)
2898 });
2899 }
2900 self.display_map
2901 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2902 }
2903 }
2904 }
2905
2906 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2907 self.dismiss_diagnostics(cx);
2908 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2909 let buffer = self.buffer.read(cx).snapshot(cx);
2910
2911 let mut primary_range = None;
2912 let mut primary_message = None;
2913 let mut group_end = Point::zero();
2914 let diagnostic_group = buffer
2915 .diagnostic_group::<Point>(group_id)
2916 .map(|entry| {
2917 if entry.range.end > group_end {
2918 group_end = entry.range.end;
2919 }
2920 if entry.diagnostic.is_primary {
2921 primary_range = Some(entry.range.clone());
2922 primary_message = Some(entry.diagnostic.message.clone());
2923 }
2924 entry
2925 })
2926 .collect::<Vec<_>>();
2927 let primary_range = primary_range.unwrap();
2928 let primary_message = primary_message.unwrap();
2929 let primary_range =
2930 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2931
2932 let blocks = display_map
2933 .insert_blocks(
2934 diagnostic_group.iter().map(|entry| {
2935 let build_settings = self.build_settings.clone();
2936 let diagnostic = entry.diagnostic.clone();
2937 let message_height = diagnostic.message.lines().count() as u8;
2938
2939 BlockProperties {
2940 position: entry.range.start,
2941 height: message_height,
2942 render: Arc::new(move |cx| {
2943 let settings = build_settings.borrow()(cx.cx);
2944 let diagnostic = diagnostic.clone();
2945 render_diagnostic(diagnostic, &settings.style, true, cx.anchor_x)
2946 }),
2947 disposition: BlockDisposition::Below,
2948 }
2949 }),
2950 cx,
2951 )
2952 .into_iter()
2953 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2954 .collect();
2955
2956 Some(ActiveDiagnosticGroup {
2957 primary_range,
2958 primary_message,
2959 blocks,
2960 is_valid: true,
2961 })
2962 });
2963 }
2964
2965 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2966 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2967 self.display_map.update(cx, |display_map, cx| {
2968 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2969 });
2970 cx.notify();
2971 }
2972 }
2973
2974 fn build_columnar_selection(
2975 &mut self,
2976 display_map: &DisplaySnapshot,
2977 row: u32,
2978 columns: &Range<u32>,
2979 reversed: bool,
2980 ) -> Option<Selection<Point>> {
2981 let is_empty = columns.start == columns.end;
2982 let line_len = display_map.line_len(row);
2983 if columns.start < line_len || (is_empty && columns.start == line_len) {
2984 let start = DisplayPoint::new(row, columns.start);
2985 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
2986 Some(Selection {
2987 id: post_inc(&mut self.next_selection_id),
2988 start: start.to_point(display_map),
2989 end: end.to_point(display_map),
2990 reversed,
2991 goal: SelectionGoal::ColumnRange {
2992 start: columns.start,
2993 end: columns.end,
2994 },
2995 })
2996 } else {
2997 None
2998 }
2999 }
3000
3001 pub fn intersecting_selections<'a>(
3002 &'a self,
3003 set_id: SelectionSetId,
3004 range: Range<DisplayPoint>,
3005 cx: &'a mut MutableAppContext,
3006 ) -> Vec<Selection<DisplayPoint>> {
3007 todo!()
3008 // let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3009 // let buffer = self.buffer.read(cx);
3010
3011 // let pending_selection = if set_id == self.selection_set_id {
3012 // self.pending_selection.as_ref().and_then(|pending| {
3013 // let selection_start = pending.selection.start.to_display_point(&display_map);
3014 // let selection_end = pending.selection.end.to_display_point(&display_map);
3015 // if selection_start <= range.end || selection_end <= range.end {
3016 // Some(Selection {
3017 // id: pending.selection.id,
3018 // start: selection_start,
3019 // end: selection_end,
3020 // reversed: pending.selection.reversed,
3021 // goal: pending.selection.goal,
3022 // })
3023 // } else {
3024 // None
3025 // }
3026 // })
3027 // } else {
3028 // None
3029 // };
3030
3031 // let range = (range.start.to_offset(&display_map, Bias::Left), Bias::Left)
3032 // ..(range.end.to_offset(&display_map, Bias::Left), Bias::Right);
3033 // buffer
3034 // .selection_set(set_id, cx)
3035 // .unwrap()
3036 // .intersecting_selections::<Point, _>(range, &buffer.read(cx))
3037 // .map(move |s| Selection {
3038 // id: s.id,
3039 // start: s.start.to_display_point(&display_map),
3040 // end: s.end.to_display_point(&display_map),
3041 // reversed: s.reversed,
3042 // goal: s.goal,
3043 // })
3044 // .chain(pending_selection)
3045 // .collect()
3046 }
3047
3048 pub fn selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3049 where
3050 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3051 {
3052 // let buffer = self.buffer.read(cx).snapshot(cx);
3053 // let mut selections = self.selection_set(cx).selections::<D>(&buffer).peekable();
3054 // let mut pending_selection = self.pending_selection(cx);
3055
3056 // iter::from_fn(move || {
3057 // if let Some(pending) = pending_selection.as_mut() {
3058 // while let Some(next_selection) = selections.peek() {
3059 // if pending.start <= next_selection.end && pending.end >= next_selection.start {
3060 // let next_selection = selections.next().unwrap();
3061 // if next_selection.start < pending.start {
3062 // pending.start = next_selection.start;
3063 // }
3064 // if next_selection.end > pending.end {
3065 // pending.end = next_selection.end;
3066 // }
3067 // } else if next_selection.end < pending.start {
3068 // return selections.next();
3069 // } else {
3070 // break;
3071 // }
3072 // }
3073
3074 // pending_selection.take()
3075 // } else {
3076 // selections.next()
3077 // }
3078 // })
3079 // .collect()
3080 todo!()
3081 }
3082
3083 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3084 &self,
3085 snapshot: &MultiBufferSnapshot,
3086 cx: &AppContext,
3087 ) -> Option<Selection<D>> {
3088 self.pending_selection
3089 .as_ref()
3090 .map(|pending| self.resolve_selection(&pending.selection, &snapshot, cx))
3091 }
3092
3093 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3094 &self,
3095 selection: &Selection<Anchor>,
3096 buffer: &MultiBufferSnapshot,
3097 cx: &AppContext,
3098 ) -> Selection<D> {
3099 Selection {
3100 id: selection.id,
3101 start: selection.start.summary::<D>(&buffer),
3102 end: selection.end.summary::<D>(&buffer),
3103 reversed: selection.reversed,
3104 goal: selection.goal,
3105 }
3106 }
3107
3108 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
3109 let mut count = self.selections.len();
3110 if self.pending_selection.is_some() {
3111 count += 1;
3112 }
3113 count
3114 }
3115
3116 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3117 &self,
3118 snapshot: &MultiBufferSnapshot,
3119 cx: &AppContext,
3120 ) -> Selection<D> {
3121 self.selections
3122 .iter()
3123 .min_by_key(|s| s.id)
3124 .map(|selection| self.resolve_selection(selection, snapshot, cx))
3125 .or_else(|| self.pending_selection(snapshot, cx))
3126 .unwrap()
3127 }
3128
3129 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3130 &self,
3131 snapshot: &MultiBufferSnapshot,
3132 cx: &AppContext,
3133 ) -> Selection<D> {
3134 self.pending_selection(snapshot, cx)
3135 .or_else(|| {
3136 self.selections
3137 .iter()
3138 .min_by_key(|s| s.id)
3139 .map(|selection| self.resolve_selection(selection, snapshot, cx))
3140 })
3141 .unwrap()
3142 }
3143
3144 pub fn update_selections<T>(
3145 &mut self,
3146 mut selections: Vec<Selection<T>>,
3147 autoscroll: Option<Autoscroll>,
3148 cx: &mut ViewContext<Self>,
3149 ) where
3150 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3151 {
3152 // Merge overlapping selections.
3153 let buffer = self.buffer.read(cx).snapshot(cx);
3154 let mut i = 1;
3155 while i < selections.len() {
3156 if selections[i - 1].end >= selections[i].start {
3157 let removed = selections.remove(i);
3158 if removed.start < selections[i - 1].start {
3159 selections[i - 1].start = removed.start;
3160 }
3161 if removed.end > selections[i - 1].end {
3162 selections[i - 1].end = removed.end;
3163 }
3164 } else {
3165 i += 1;
3166 }
3167 }
3168
3169 self.pending_selection = None;
3170 self.add_selections_state = None;
3171 self.select_next_state = None;
3172 self.select_larger_syntax_node_stack.clear();
3173 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3174 let all_selections_inside_autoclose_ranges =
3175 if selections.len() == autoclose_pair.ranges.len() {
3176 selections
3177 .iter()
3178 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3179 .all(|(selection, autoclose_range)| {
3180 let head = selection.head().to_point(&buffer);
3181 autoclose_range.start <= head && autoclose_range.end >= head
3182 })
3183 } else {
3184 false
3185 };
3186
3187 if all_selections_inside_autoclose_ranges {
3188 break;
3189 } else {
3190 self.autoclose_stack.pop();
3191 }
3192 }
3193
3194 if let Some(autoscroll) = autoscroll {
3195 self.request_autoscroll(autoscroll, cx);
3196 }
3197 self.pause_cursor_blinking(cx);
3198
3199 self.selections = Arc::from_iter(selections.into_iter().map(|selection| Selection {
3200 id: selection.id,
3201 start: buffer.anchor_before(selection.start),
3202 end: buffer.anchor_before(selection.end),
3203 reversed: selection.reversed,
3204 goal: selection.goal,
3205 }));
3206 }
3207
3208 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3209 self.autoscroll_request = Some(autoscroll);
3210 cx.notify();
3211 }
3212
3213 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3214 self.end_selection(cx);
3215 self.buffer.update(cx, |buffer, cx| {
3216 buffer.start_transaction(cx);
3217 });
3218 }
3219
3220 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
3221 self.buffer.update(cx, |buffer, cx| {
3222 buffer.end_transaction(cx);
3223 });
3224 }
3225
3226 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3227 log::info!("Editor::page_up");
3228 }
3229
3230 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3231 log::info!("Editor::page_down");
3232 }
3233
3234 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3235 let mut fold_ranges = Vec::new();
3236
3237 let selections = self.selections::<Point>(cx);
3238 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3239 for selection in selections {
3240 let range = selection.display_range(&display_map).sorted();
3241 let buffer_start_row = range.start.to_point(&display_map).row;
3242
3243 for row in (0..=range.end.row()).rev() {
3244 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3245 let fold_range = self.foldable_range_for_line(&display_map, row);
3246 if fold_range.end.row >= buffer_start_row {
3247 fold_ranges.push(fold_range);
3248 if row <= range.start.row() {
3249 break;
3250 }
3251 }
3252 }
3253 }
3254 }
3255
3256 self.fold_ranges(fold_ranges, cx);
3257 }
3258
3259 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3260 let selections = self.selections::<Point>(cx);
3261 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3262 let buffer = &display_map.buffer_snapshot;
3263 let ranges = selections
3264 .iter()
3265 .map(|s| {
3266 let range = s.display_range(&display_map).sorted();
3267 let mut start = range.start.to_point(&display_map);
3268 let mut end = range.end.to_point(&display_map);
3269 start.column = 0;
3270 end.column = buffer.line_len(end.row);
3271 start..end
3272 })
3273 .collect::<Vec<_>>();
3274 self.unfold_ranges(ranges, cx);
3275 }
3276
3277 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3278 let max_point = display_map.max_point();
3279 if display_row >= max_point.row() {
3280 false
3281 } else {
3282 let (start_indent, is_blank) = display_map.line_indent(display_row);
3283 if is_blank {
3284 false
3285 } else {
3286 for display_row in display_row + 1..=max_point.row() {
3287 let (indent, is_blank) = display_map.line_indent(display_row);
3288 if !is_blank {
3289 return indent > start_indent;
3290 }
3291 }
3292 false
3293 }
3294 }
3295 }
3296
3297 fn foldable_range_for_line(
3298 &self,
3299 display_map: &DisplaySnapshot,
3300 start_row: u32,
3301 ) -> Range<Point> {
3302 let max_point = display_map.max_point();
3303
3304 let (start_indent, _) = display_map.line_indent(start_row);
3305 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3306 let mut end = None;
3307 for row in start_row + 1..=max_point.row() {
3308 let (indent, is_blank) = display_map.line_indent(row);
3309 if !is_blank && indent <= start_indent {
3310 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3311 break;
3312 }
3313 }
3314
3315 let end = end.unwrap_or(max_point);
3316 return start.to_point(display_map)..end.to_point(display_map);
3317 }
3318
3319 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3320 let selections = self.selections::<Point>(cx);
3321 let ranges = selections.into_iter().map(|s| s.start..s.end);
3322 self.fold_ranges(ranges, cx);
3323 }
3324
3325 fn fold_ranges<T: ToOffset>(
3326 &mut self,
3327 ranges: impl IntoIterator<Item = Range<T>>,
3328 cx: &mut ViewContext<Self>,
3329 ) {
3330 let mut ranges = ranges.into_iter().peekable();
3331 if ranges.peek().is_some() {
3332 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3333 self.request_autoscroll(Autoscroll::Fit, cx);
3334 cx.notify();
3335 }
3336 }
3337
3338 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3339 if !ranges.is_empty() {
3340 self.display_map
3341 .update(cx, |map, cx| map.unfold(ranges, cx));
3342 self.request_autoscroll(Autoscroll::Fit, cx);
3343 cx.notify();
3344 }
3345 }
3346
3347 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3348 self.display_map
3349 .update(cx, |map, cx| map.snapshot(cx))
3350 .longest_row()
3351 }
3352
3353 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3354 self.display_map
3355 .update(cx, |map, cx| map.snapshot(cx))
3356 .max_point()
3357 }
3358
3359 pub fn text(&self, cx: &AppContext) -> String {
3360 self.buffer.read(cx).read(cx).text()
3361 }
3362
3363 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3364 self.display_map
3365 .update(cx, |map, cx| map.snapshot(cx))
3366 .text()
3367 }
3368
3369 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3370 self.display_map
3371 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3372 }
3373
3374 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3375 self.highlighted_row = row;
3376 }
3377
3378 pub fn highlighted_row(&mut self) -> Option<u32> {
3379 self.highlighted_row
3380 }
3381
3382 fn next_blink_epoch(&mut self) -> usize {
3383 self.blink_epoch += 1;
3384 self.blink_epoch
3385 }
3386
3387 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3388 self.show_local_cursors = true;
3389 cx.notify();
3390
3391 let epoch = self.next_blink_epoch();
3392 cx.spawn(|this, mut cx| {
3393 let this = this.downgrade();
3394 async move {
3395 Timer::after(CURSOR_BLINK_INTERVAL).await;
3396 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3397 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3398 }
3399 }
3400 })
3401 .detach();
3402 }
3403
3404 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3405 if epoch == self.blink_epoch {
3406 self.blinking_paused = false;
3407 self.blink_cursors(epoch, cx);
3408 }
3409 }
3410
3411 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3412 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3413 self.show_local_cursors = !self.show_local_cursors;
3414 cx.notify();
3415
3416 let epoch = self.next_blink_epoch();
3417 cx.spawn(|this, mut cx| {
3418 let this = this.downgrade();
3419 async move {
3420 Timer::after(CURSOR_BLINK_INTERVAL).await;
3421 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3422 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3423 }
3424 }
3425 })
3426 .detach();
3427 }
3428 }
3429
3430 pub fn show_local_cursors(&self) -> bool {
3431 self.show_local_cursors
3432 }
3433
3434 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3435 self.refresh_active_diagnostics(cx);
3436 cx.notify();
3437 }
3438
3439 fn on_buffer_event(
3440 &mut self,
3441 _: ModelHandle<MultiBuffer>,
3442 event: &language::Event,
3443 cx: &mut ViewContext<Self>,
3444 ) {
3445 match event {
3446 language::Event::Edited => cx.emit(Event::Edited),
3447 language::Event::Dirtied => cx.emit(Event::Dirtied),
3448 language::Event::Saved => cx.emit(Event::Saved),
3449 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3450 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3451 language::Event::Closed => cx.emit(Event::Closed),
3452 _ => {}
3453 }
3454 }
3455
3456 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3457 cx.notify();
3458 }
3459}
3460
3461impl EditorSnapshot {
3462 pub fn is_focused(&self) -> bool {
3463 self.is_focused
3464 }
3465
3466 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3467 self.placeholder_text.as_ref()
3468 }
3469
3470 pub fn scroll_position(&self) -> Vector2F {
3471 compute_scroll_position(
3472 &self.display_snapshot,
3473 self.scroll_position,
3474 &self.scroll_top_anchor,
3475 )
3476 }
3477}
3478
3479impl Deref for EditorSnapshot {
3480 type Target = DisplaySnapshot;
3481
3482 fn deref(&self) -> &Self::Target {
3483 &self.display_snapshot
3484 }
3485}
3486
3487impl EditorSettings {
3488 #[cfg(any(test, feature = "test-support"))]
3489 pub fn test(cx: &AppContext) -> Self {
3490 Self {
3491 tab_size: 4,
3492 soft_wrap: SoftWrap::None,
3493 style: {
3494 let font_cache: &gpui::FontCache = cx.font_cache();
3495 let font_family_name = Arc::from("Monaco");
3496 let font_properties = Default::default();
3497 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3498 let font_id = font_cache
3499 .select_font(font_family_id, &font_properties)
3500 .unwrap();
3501 EditorStyle {
3502 text: gpui::fonts::TextStyle {
3503 font_family_name,
3504 font_family_id,
3505 font_id,
3506 font_size: 14.,
3507 color: gpui::color::Color::from_u32(0xff0000ff),
3508 font_properties,
3509 underline: None,
3510 },
3511 placeholder_text: None,
3512 background: Default::default(),
3513 gutter_background: Default::default(),
3514 active_line_background: Default::default(),
3515 highlighted_line_background: Default::default(),
3516 line_number: Default::default(),
3517 line_number_active: Default::default(),
3518 selection: Default::default(),
3519 guest_selections: Default::default(),
3520 syntax: Default::default(),
3521 error_diagnostic: Default::default(),
3522 invalid_error_diagnostic: Default::default(),
3523 warning_diagnostic: Default::default(),
3524 invalid_warning_diagnostic: Default::default(),
3525 information_diagnostic: Default::default(),
3526 invalid_information_diagnostic: Default::default(),
3527 hint_diagnostic: Default::default(),
3528 invalid_hint_diagnostic: Default::default(),
3529 }
3530 },
3531 }
3532 }
3533}
3534
3535fn compute_scroll_position(
3536 snapshot: &DisplaySnapshot,
3537 mut scroll_position: Vector2F,
3538 scroll_top_anchor: &Anchor,
3539) -> Vector2F {
3540 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3541 scroll_position.set_y(scroll_top + scroll_position.y());
3542 scroll_position
3543}
3544
3545pub enum Event {
3546 Activate,
3547 Edited,
3548 Blurred,
3549 Dirtied,
3550 Saved,
3551 FileHandleChanged,
3552 Closed,
3553}
3554
3555impl Entity for Editor {
3556 type Event = Event;
3557}
3558
3559impl View for Editor {
3560 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3561 let settings = self.build_settings.borrow_mut()(cx);
3562 self.display_map.update(cx, |map, cx| {
3563 map.set_font(
3564 settings.style.text.font_id,
3565 settings.style.text.font_size,
3566 cx,
3567 )
3568 });
3569 EditorElement::new(self.handle.clone(), settings).boxed()
3570 }
3571
3572 fn ui_name() -> &'static str {
3573 "Editor"
3574 }
3575
3576 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3577 self.focused = true;
3578 self.blink_cursors(self.blink_epoch, cx);
3579 }
3580
3581 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3582 self.focused = false;
3583 self.show_local_cursors = false;
3584 cx.emit(Event::Blurred);
3585 cx.notify();
3586 }
3587
3588 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3589 let mut cx = Self::default_keymap_context();
3590 let mode = match self.mode {
3591 EditorMode::SingleLine => "single_line",
3592 EditorMode::AutoHeight { .. } => "auto_height",
3593 EditorMode::Full => "full",
3594 };
3595 cx.map.insert("mode".into(), mode.into());
3596 cx
3597 }
3598}
3599
3600impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3601 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3602 let start = self.start.to_point(buffer);
3603 let end = self.end.to_point(buffer);
3604 if self.reversed {
3605 end..start
3606 } else {
3607 start..end
3608 }
3609 }
3610
3611 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3612 let start = self.start.to_offset(buffer);
3613 let end = self.end.to_offset(buffer);
3614 if self.reversed {
3615 end..start
3616 } else {
3617 start..end
3618 }
3619 }
3620
3621 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3622 let start = self
3623 .start
3624 .to_point(&map.buffer_snapshot)
3625 .to_display_point(map);
3626 let end = self
3627 .end
3628 .to_point(&map.buffer_snapshot)
3629 .to_display_point(map);
3630 if self.reversed {
3631 end..start
3632 } else {
3633 start..end
3634 }
3635 }
3636
3637 fn spanned_rows(
3638 &self,
3639 include_end_if_at_line_start: bool,
3640 map: &DisplaySnapshot,
3641 ) -> SpannedRows {
3642 let display_start = self
3643 .start
3644 .to_point(&map.buffer_snapshot)
3645 .to_display_point(map);
3646 let mut display_end = self
3647 .end
3648 .to_point(&map.buffer_snapshot)
3649 .to_display_point(map);
3650 if !include_end_if_at_line_start
3651 && display_end.row() != map.max_point().row()
3652 && display_start.row() != display_end.row()
3653 && display_end.column() == 0
3654 {
3655 *display_end.row_mut() -= 1;
3656 }
3657
3658 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3659 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3660
3661 SpannedRows {
3662 buffer_rows: buffer_start.row..buffer_end.row + 1,
3663 display_rows: display_start.row()..display_end.row() + 1,
3664 }
3665 }
3666}
3667
3668fn render_diagnostic(
3669 diagnostic: Diagnostic,
3670 style: &EditorStyle,
3671 valid: bool,
3672 anchor_x: f32,
3673) -> ElementBox {
3674 let mut text_style = style.text.clone();
3675 text_style.color = diagnostic_style(diagnostic.severity, valid, &style).text;
3676 Text::new(diagnostic.message, text_style)
3677 .contained()
3678 .with_margin_left(anchor_x)
3679 .boxed()
3680}
3681
3682pub fn diagnostic_style(
3683 severity: DiagnosticSeverity,
3684 valid: bool,
3685 style: &EditorStyle,
3686) -> DiagnosticStyle {
3687 match (severity, valid) {
3688 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3689 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3690 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3691 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3692 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3693 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3694 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3695 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3696 _ => Default::default(),
3697 }
3698}
3699
3700#[cfg(test)]
3701mod tests {
3702 use std::mem;
3703
3704 use super::*;
3705 use language::LanguageConfig;
3706 use text::Point;
3707 use unindent::Unindent;
3708 use util::test::sample_text;
3709
3710 #[gpui::test]
3711 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3712 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3713 let settings = EditorSettings::test(cx);
3714 let (_, editor) =
3715 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3716
3717 editor.update(cx, |view, cx| {
3718 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3719 });
3720
3721 assert_eq!(
3722 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3723 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3724 );
3725
3726 editor.update(cx, |view, cx| {
3727 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3728 });
3729
3730 assert_eq!(
3731 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3732 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3733 );
3734
3735 editor.update(cx, |view, cx| {
3736 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3737 });
3738
3739 assert_eq!(
3740 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3741 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3742 );
3743
3744 editor.update(cx, |view, cx| {
3745 view.end_selection(cx);
3746 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3747 });
3748
3749 assert_eq!(
3750 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3751 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3752 );
3753
3754 editor.update(cx, |view, cx| {
3755 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3756 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
3757 });
3758
3759 assert_eq!(
3760 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3761 [
3762 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3763 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3764 ]
3765 );
3766
3767 editor.update(cx, |view, cx| {
3768 view.end_selection(cx);
3769 });
3770
3771 assert_eq!(
3772 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3773 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3774 );
3775 }
3776
3777 #[gpui::test]
3778 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3779 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3780 let settings = EditorSettings::test(cx);
3781 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3782
3783 view.update(cx, |view, cx| {
3784 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3785 assert_eq!(
3786 view.selection_ranges(cx),
3787 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3788 );
3789 });
3790
3791 view.update(cx, |view, cx| {
3792 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3793 assert_eq!(
3794 view.selection_ranges(cx),
3795 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3796 );
3797 });
3798
3799 view.update(cx, |view, cx| {
3800 view.cancel(&Cancel, cx);
3801 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3802 assert_eq!(
3803 view.selection_ranges(cx),
3804 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3805 );
3806 });
3807 }
3808
3809 #[gpui::test]
3810 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3811 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3812 let settings = EditorSettings::test(cx);
3813 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3814
3815 view.update(cx, |view, cx| {
3816 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3817 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3818 view.end_selection(cx);
3819
3820 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3821 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
3822 view.end_selection(cx);
3823 assert_eq!(
3824 view.selection_ranges(cx),
3825 [
3826 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3827 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3828 ]
3829 );
3830 });
3831
3832 view.update(cx, |view, cx| {
3833 view.cancel(&Cancel, cx);
3834 assert_eq!(
3835 view.selection_ranges(cx),
3836 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3837 );
3838 });
3839
3840 view.update(cx, |view, cx| {
3841 view.cancel(&Cancel, cx);
3842 assert_eq!(
3843 view.selection_ranges(cx),
3844 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3845 );
3846 });
3847 }
3848
3849 #[gpui::test]
3850 fn test_fold(cx: &mut gpui::MutableAppContext) {
3851 let buffer = MultiBuffer::build_simple(
3852 &"
3853 impl Foo {
3854 // Hello!
3855
3856 fn a() {
3857 1
3858 }
3859
3860 fn b() {
3861 2
3862 }
3863
3864 fn c() {
3865 3
3866 }
3867 }
3868 "
3869 .unindent(),
3870 cx,
3871 );
3872 let settings = EditorSettings::test(&cx);
3873 let (_, view) = cx.add_window(Default::default(), |cx| {
3874 build_editor(buffer.clone(), settings, cx)
3875 });
3876
3877 view.update(cx, |view, cx| {
3878 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3879 .unwrap();
3880 view.fold(&Fold, cx);
3881 assert_eq!(
3882 view.display_text(cx),
3883 "
3884 impl Foo {
3885 // Hello!
3886
3887 fn a() {
3888 1
3889 }
3890
3891 fn b() {…
3892 }
3893
3894 fn c() {…
3895 }
3896 }
3897 "
3898 .unindent(),
3899 );
3900
3901 view.fold(&Fold, cx);
3902 assert_eq!(
3903 view.display_text(cx),
3904 "
3905 impl Foo {…
3906 }
3907 "
3908 .unindent(),
3909 );
3910
3911 view.unfold(&Unfold, cx);
3912 assert_eq!(
3913 view.display_text(cx),
3914 "
3915 impl Foo {
3916 // Hello!
3917
3918 fn a() {
3919 1
3920 }
3921
3922 fn b() {…
3923 }
3924
3925 fn c() {…
3926 }
3927 }
3928 "
3929 .unindent(),
3930 );
3931
3932 view.unfold(&Unfold, cx);
3933 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
3934 });
3935 }
3936
3937 #[gpui::test]
3938 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3939 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3940 let settings = EditorSettings::test(&cx);
3941 let (_, view) = cx.add_window(Default::default(), |cx| {
3942 build_editor(buffer.clone(), settings, cx)
3943 });
3944
3945 buffer.update(cx, |buffer, cx| {
3946 buffer.edit(
3947 vec![
3948 Point::new(1, 0)..Point::new(1, 0),
3949 Point::new(1, 1)..Point::new(1, 1),
3950 ],
3951 "\t",
3952 cx,
3953 );
3954 });
3955
3956 view.update(cx, |view, cx| {
3957 assert_eq!(
3958 view.selection_ranges(cx),
3959 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3960 );
3961
3962 view.move_down(&MoveDown, cx);
3963 assert_eq!(
3964 view.selection_ranges(cx),
3965 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3966 );
3967
3968 view.move_right(&MoveRight, cx);
3969 assert_eq!(
3970 view.selection_ranges(cx),
3971 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3972 );
3973
3974 view.move_left(&MoveLeft, cx);
3975 assert_eq!(
3976 view.selection_ranges(cx),
3977 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3978 );
3979
3980 view.move_up(&MoveUp, cx);
3981 assert_eq!(
3982 view.selection_ranges(cx),
3983 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3984 );
3985
3986 view.move_to_end(&MoveToEnd, cx);
3987 assert_eq!(
3988 view.selection_ranges(cx),
3989 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
3990 );
3991
3992 view.move_to_beginning(&MoveToBeginning, cx);
3993 assert_eq!(
3994 view.selection_ranges(cx),
3995 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3996 );
3997
3998 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
3999 .unwrap();
4000 view.select_to_beginning(&SelectToBeginning, cx);
4001 assert_eq!(
4002 view.selection_ranges(cx),
4003 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4004 );
4005
4006 view.select_to_end(&SelectToEnd, cx);
4007 assert_eq!(
4008 view.selection_ranges(cx),
4009 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4010 );
4011 });
4012 }
4013
4014 #[gpui::test]
4015 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4016 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4017 let settings = EditorSettings::test(&cx);
4018 let (_, view) = cx.add_window(Default::default(), |cx| {
4019 build_editor(buffer.clone(), settings, cx)
4020 });
4021
4022 assert_eq!('ⓐ'.len_utf8(), 3);
4023 assert_eq!('α'.len_utf8(), 2);
4024
4025 view.update(cx, |view, cx| {
4026 view.fold_ranges(
4027 vec![
4028 Point::new(0, 6)..Point::new(0, 12),
4029 Point::new(1, 2)..Point::new(1, 4),
4030 Point::new(2, 4)..Point::new(2, 8),
4031 ],
4032 cx,
4033 );
4034 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4035
4036 view.move_right(&MoveRight, cx);
4037 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4038 view.move_right(&MoveRight, cx);
4039 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4040 view.move_right(&MoveRight, cx);
4041 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4042
4043 view.move_down(&MoveDown, cx);
4044 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
4045 view.move_left(&MoveLeft, cx);
4046 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
4047 view.move_left(&MoveLeft, cx);
4048 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
4049
4050 view.move_down(&MoveDown, cx);
4051 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
4052 view.move_right(&MoveRight, cx);
4053 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
4054 view.move_right(&MoveRight, cx);
4055 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
4056 view.move_right(&MoveRight, cx);
4057 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
4058
4059 view.move_up(&MoveUp, cx);
4060 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
4061 view.move_up(&MoveUp, cx);
4062 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
4063 view.move_left(&MoveLeft, cx);
4064 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4065 view.move_left(&MoveLeft, cx);
4066 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4067 view.move_left(&MoveLeft, cx);
4068 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4069 });
4070 }
4071
4072 #[gpui::test]
4073 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4074 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4075 let settings = EditorSettings::test(&cx);
4076 let (_, view) = cx.add_window(Default::default(), |cx| {
4077 build_editor(buffer.clone(), settings, cx)
4078 });
4079 view.update(cx, |view, cx| {
4080 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4081 .unwrap();
4082
4083 view.move_down(&MoveDown, cx);
4084 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
4085
4086 view.move_down(&MoveDown, cx);
4087 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4088
4089 view.move_down(&MoveDown, cx);
4090 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4091
4092 view.move_down(&MoveDown, cx);
4093 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
4094
4095 view.move_up(&MoveUp, cx);
4096 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4097
4098 view.move_up(&MoveUp, cx);
4099 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4100 });
4101 }
4102
4103 #[gpui::test]
4104 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4105 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4106 let settings = EditorSettings::test(&cx);
4107 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4108 view.update(cx, |view, cx| {
4109 view.select_display_ranges(
4110 &[
4111 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4112 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4113 ],
4114 cx,
4115 )
4116 .unwrap();
4117 });
4118
4119 view.update(cx, |view, cx| {
4120 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4121 assert_eq!(
4122 view.selection_ranges(cx),
4123 &[
4124 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4125 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4126 ]
4127 );
4128 });
4129
4130 view.update(cx, |view, cx| {
4131 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4132 assert_eq!(
4133 view.selection_ranges(cx),
4134 &[
4135 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4136 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4137 ]
4138 );
4139 });
4140
4141 view.update(cx, |view, cx| {
4142 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4143 assert_eq!(
4144 view.selection_ranges(cx),
4145 &[
4146 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4147 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4148 ]
4149 );
4150 });
4151
4152 view.update(cx, |view, cx| {
4153 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4154 assert_eq!(
4155 view.selection_ranges(cx),
4156 &[
4157 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4158 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4159 ]
4160 );
4161 });
4162
4163 // Moving to the end of line again is a no-op.
4164 view.update(cx, |view, cx| {
4165 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4166 assert_eq!(
4167 view.selection_ranges(cx),
4168 &[
4169 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4170 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4171 ]
4172 );
4173 });
4174
4175 view.update(cx, |view, cx| {
4176 view.move_left(&MoveLeft, cx);
4177 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4178 assert_eq!(
4179 view.selection_ranges(cx),
4180 &[
4181 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4182 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4183 ]
4184 );
4185 });
4186
4187 view.update(cx, |view, cx| {
4188 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4189 assert_eq!(
4190 view.selection_ranges(cx),
4191 &[
4192 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4193 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4194 ]
4195 );
4196 });
4197
4198 view.update(cx, |view, cx| {
4199 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4200 assert_eq!(
4201 view.selection_ranges(cx),
4202 &[
4203 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4204 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4205 ]
4206 );
4207 });
4208
4209 view.update(cx, |view, cx| {
4210 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4211 assert_eq!(
4212 view.selection_ranges(cx),
4213 &[
4214 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4215 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4216 ]
4217 );
4218 });
4219
4220 view.update(cx, |view, cx| {
4221 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4222 assert_eq!(view.display_text(cx), "ab\n de");
4223 assert_eq!(
4224 view.selection_ranges(cx),
4225 &[
4226 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4227 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4228 ]
4229 );
4230 });
4231
4232 view.update(cx, |view, cx| {
4233 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4234 assert_eq!(view.display_text(cx), "\n");
4235 assert_eq!(
4236 view.selection_ranges(cx),
4237 &[
4238 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4239 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4240 ]
4241 );
4242 });
4243 }
4244
4245 #[gpui::test]
4246 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4247 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4248 let settings = EditorSettings::test(&cx);
4249 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4250 view.update(cx, |view, cx| {
4251 view.select_display_ranges(
4252 &[
4253 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4254 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4255 ],
4256 cx,
4257 )
4258 .unwrap();
4259 });
4260
4261 view.update(cx, |view, cx| {
4262 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4263 assert_eq!(
4264 view.selection_ranges(cx),
4265 &[
4266 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4267 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4268 ]
4269 );
4270 });
4271
4272 view.update(cx, |view, cx| {
4273 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4274 assert_eq!(
4275 view.selection_ranges(cx),
4276 &[
4277 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4278 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4279 ]
4280 );
4281 });
4282
4283 view.update(cx, |view, cx| {
4284 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4285 assert_eq!(
4286 view.selection_ranges(cx),
4287 &[
4288 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4289 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4290 ]
4291 );
4292 });
4293
4294 view.update(cx, |view, cx| {
4295 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4296 assert_eq!(
4297 view.selection_ranges(cx),
4298 &[
4299 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4300 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4301 ]
4302 );
4303 });
4304
4305 view.update(cx, |view, cx| {
4306 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4307 assert_eq!(
4308 view.selection_ranges(cx),
4309 &[
4310 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4311 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4312 ]
4313 );
4314 });
4315
4316 view.update(cx, |view, cx| {
4317 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4318 assert_eq!(
4319 view.selection_ranges(cx),
4320 &[
4321 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4322 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4323 ]
4324 );
4325 });
4326
4327 view.update(cx, |view, cx| {
4328 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4329 assert_eq!(
4330 view.selection_ranges(cx),
4331 &[
4332 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4333 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4334 ]
4335 );
4336 });
4337
4338 view.update(cx, |view, cx| {
4339 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4340 assert_eq!(
4341 view.selection_ranges(cx),
4342 &[
4343 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4344 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4345 ]
4346 );
4347 });
4348
4349 view.update(cx, |view, cx| {
4350 view.move_right(&MoveRight, cx);
4351 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4352 assert_eq!(
4353 view.selection_ranges(cx),
4354 &[
4355 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4356 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4357 ]
4358 );
4359 });
4360
4361 view.update(cx, |view, cx| {
4362 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4363 assert_eq!(
4364 view.selection_ranges(cx),
4365 &[
4366 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4367 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4368 ]
4369 );
4370 });
4371
4372 view.update(cx, |view, cx| {
4373 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4374 assert_eq!(
4375 view.selection_ranges(cx),
4376 &[
4377 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4378 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4379 ]
4380 );
4381 });
4382 }
4383
4384 #[gpui::test]
4385 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4386 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4387 let settings = EditorSettings::test(&cx);
4388 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4389
4390 view.update(cx, |view, cx| {
4391 view.set_wrap_width(Some(140.), cx);
4392 assert_eq!(
4393 view.display_text(cx),
4394 "use one::{\n two::three::\n four::five\n};"
4395 );
4396
4397 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4398 .unwrap();
4399
4400 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4401 assert_eq!(
4402 view.selection_ranges(cx),
4403 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4404 );
4405
4406 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4407 assert_eq!(
4408 view.selection_ranges(cx),
4409 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4410 );
4411
4412 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4413 assert_eq!(
4414 view.selection_ranges(cx),
4415 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4416 );
4417
4418 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4419 assert_eq!(
4420 view.selection_ranges(cx),
4421 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4422 );
4423
4424 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4425 assert_eq!(
4426 view.selection_ranges(cx),
4427 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4428 );
4429
4430 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4431 assert_eq!(
4432 view.selection_ranges(cx),
4433 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4434 );
4435 });
4436 }
4437
4438 #[gpui::test]
4439 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4440 let buffer = MultiBuffer::build_simple("one two three four", cx);
4441 let settings = EditorSettings::test(&cx);
4442 let (_, view) = cx.add_window(Default::default(), |cx| {
4443 build_editor(buffer.clone(), settings, cx)
4444 });
4445
4446 view.update(cx, |view, cx| {
4447 view.select_display_ranges(
4448 &[
4449 // an empty selection - the preceding word fragment is deleted
4450 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4451 // characters selected - they are deleted
4452 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4453 ],
4454 cx,
4455 )
4456 .unwrap();
4457 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4458 });
4459
4460 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4461
4462 view.update(cx, |view, cx| {
4463 view.select_display_ranges(
4464 &[
4465 // an empty selection - the following word fragment is deleted
4466 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4467 // characters selected - they are deleted
4468 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4469 ],
4470 cx,
4471 )
4472 .unwrap();
4473 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4474 });
4475
4476 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4477 }
4478
4479 #[gpui::test]
4480 fn test_newline(cx: &mut gpui::MutableAppContext) {
4481 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4482 let settings = EditorSettings::test(&cx);
4483 let (_, view) = cx.add_window(Default::default(), |cx| {
4484 build_editor(buffer.clone(), settings, cx)
4485 });
4486
4487 view.update(cx, |view, cx| {
4488 view.select_display_ranges(
4489 &[
4490 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4491 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4492 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4493 ],
4494 cx,
4495 )
4496 .unwrap();
4497
4498 view.newline(&Newline, cx);
4499 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4500 });
4501 }
4502
4503 #[gpui::test]
4504 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4505 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4506 let settings = EditorSettings::test(&cx);
4507 let (_, view) = cx.add_window(Default::default(), |cx| {
4508 build_editor(buffer.clone(), settings, cx)
4509 });
4510
4511 view.update(cx, |view, cx| {
4512 // two selections on the same line
4513 view.select_display_ranges(
4514 &[
4515 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4516 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4517 ],
4518 cx,
4519 )
4520 .unwrap();
4521
4522 // indent from mid-tabstop to full tabstop
4523 view.tab(&Tab, cx);
4524 assert_eq!(view.text(cx), " one two\nthree\n four");
4525 assert_eq!(
4526 view.selection_ranges(cx),
4527 &[
4528 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4529 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4530 ]
4531 );
4532
4533 // outdent from 1 tabstop to 0 tabstops
4534 view.outdent(&Outdent, cx);
4535 assert_eq!(view.text(cx), "one two\nthree\n four");
4536 assert_eq!(
4537 view.selection_ranges(cx),
4538 &[
4539 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4540 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4541 ]
4542 );
4543
4544 // select across line ending
4545 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4546 .unwrap();
4547
4548 // indent and outdent affect only the preceding line
4549 view.tab(&Tab, cx);
4550 assert_eq!(view.text(cx), "one two\n three\n four");
4551 assert_eq!(
4552 view.selection_ranges(cx),
4553 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4554 );
4555 view.outdent(&Outdent, cx);
4556 assert_eq!(view.text(cx), "one two\nthree\n four");
4557 assert_eq!(
4558 view.selection_ranges(cx),
4559 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4560 );
4561 });
4562 }
4563
4564 #[gpui::test]
4565 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4566 let buffer =
4567 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4568 let settings = EditorSettings::test(&cx);
4569 let (_, view) = cx.add_window(Default::default(), |cx| {
4570 build_editor(buffer.clone(), settings, cx)
4571 });
4572
4573 view.update(cx, |view, cx| {
4574 view.select_display_ranges(
4575 &[
4576 // an empty selection - the preceding character is deleted
4577 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4578 // one character selected - it is deleted
4579 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4580 // a line suffix selected - it is deleted
4581 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4582 ],
4583 cx,
4584 )
4585 .unwrap();
4586 view.backspace(&Backspace, cx);
4587 });
4588
4589 assert_eq!(
4590 buffer.read(cx).read(cx).text(),
4591 "oe two three\nfou five six\nseven ten\n"
4592 );
4593 }
4594
4595 #[gpui::test]
4596 fn test_delete(cx: &mut gpui::MutableAppContext) {
4597 let buffer =
4598 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4599 let settings = EditorSettings::test(&cx);
4600 let (_, view) = cx.add_window(Default::default(), |cx| {
4601 build_editor(buffer.clone(), settings, cx)
4602 });
4603
4604 view.update(cx, |view, cx| {
4605 view.select_display_ranges(
4606 &[
4607 // an empty selection - the following character is deleted
4608 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4609 // one character selected - it is deleted
4610 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4611 // a line suffix selected - it is deleted
4612 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4613 ],
4614 cx,
4615 )
4616 .unwrap();
4617 view.delete(&Delete, cx);
4618 });
4619
4620 assert_eq!(
4621 buffer.read(cx).read(cx).text(),
4622 "on two three\nfou five six\nseven ten\n"
4623 );
4624 }
4625
4626 #[gpui::test]
4627 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4628 let settings = EditorSettings::test(&cx);
4629 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4630 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4631 view.update(cx, |view, cx| {
4632 view.select_display_ranges(
4633 &[
4634 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4635 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4636 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4637 ],
4638 cx,
4639 )
4640 .unwrap();
4641 view.delete_line(&DeleteLine, cx);
4642 assert_eq!(view.display_text(cx), "ghi");
4643 assert_eq!(
4644 view.selection_ranges(cx),
4645 vec![
4646 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4647 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4648 ]
4649 );
4650 });
4651
4652 let settings = EditorSettings::test(&cx);
4653 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4654 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4655 view.update(cx, |view, cx| {
4656 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4657 .unwrap();
4658 view.delete_line(&DeleteLine, cx);
4659 assert_eq!(view.display_text(cx), "ghi\n");
4660 assert_eq!(
4661 view.selection_ranges(cx),
4662 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4663 );
4664 });
4665 }
4666
4667 #[gpui::test]
4668 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4669 let settings = EditorSettings::test(&cx);
4670 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4671 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4672 view.update(cx, |view, cx| {
4673 view.select_display_ranges(
4674 &[
4675 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4676 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4677 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4678 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4679 ],
4680 cx,
4681 )
4682 .unwrap();
4683 view.duplicate_line(&DuplicateLine, cx);
4684 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4685 assert_eq!(
4686 view.selection_ranges(cx),
4687 vec![
4688 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4689 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4690 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4691 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4692 ]
4693 );
4694 });
4695
4696 let settings = EditorSettings::test(&cx);
4697 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4698 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4699 view.update(cx, |view, cx| {
4700 view.select_display_ranges(
4701 &[
4702 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4703 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4704 ],
4705 cx,
4706 )
4707 .unwrap();
4708 view.duplicate_line(&DuplicateLine, cx);
4709 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4710 assert_eq!(
4711 view.selection_ranges(cx),
4712 vec![
4713 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4714 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4715 ]
4716 );
4717 });
4718 }
4719
4720 #[gpui::test]
4721 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4722 let settings = EditorSettings::test(&cx);
4723 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
4724 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4725 view.update(cx, |view, cx| {
4726 view.fold_ranges(
4727 vec![
4728 Point::new(0, 2)..Point::new(1, 2),
4729 Point::new(2, 3)..Point::new(4, 1),
4730 Point::new(7, 0)..Point::new(8, 4),
4731 ],
4732 cx,
4733 );
4734 view.select_display_ranges(
4735 &[
4736 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4737 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4738 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4739 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4740 ],
4741 cx,
4742 )
4743 .unwrap();
4744 assert_eq!(
4745 view.display_text(cx),
4746 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4747 );
4748
4749 view.move_line_up(&MoveLineUp, cx);
4750 assert_eq!(
4751 view.display_text(cx),
4752 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4753 );
4754 assert_eq!(
4755 view.selection_ranges(cx),
4756 vec![
4757 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4758 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4759 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4760 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4761 ]
4762 );
4763 });
4764
4765 view.update(cx, |view, cx| {
4766 view.move_line_down(&MoveLineDown, cx);
4767 assert_eq!(
4768 view.display_text(cx),
4769 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4770 );
4771 assert_eq!(
4772 view.selection_ranges(cx),
4773 vec![
4774 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4775 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4776 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4777 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4778 ]
4779 );
4780 });
4781
4782 view.update(cx, |view, cx| {
4783 view.move_line_down(&MoveLineDown, cx);
4784 assert_eq!(
4785 view.display_text(cx),
4786 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4787 );
4788 assert_eq!(
4789 view.selection_ranges(cx),
4790 vec![
4791 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4792 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4793 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4794 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4795 ]
4796 );
4797 });
4798
4799 view.update(cx, |view, cx| {
4800 view.move_line_up(&MoveLineUp, cx);
4801 assert_eq!(
4802 view.display_text(cx),
4803 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4804 );
4805 assert_eq!(
4806 view.selection_ranges(cx),
4807 vec![
4808 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4809 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4810 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4811 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4812 ]
4813 );
4814 });
4815 }
4816
4817 #[gpui::test]
4818 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4819 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
4820 let settings = EditorSettings::test(&cx);
4821 let view = cx
4822 .add_window(Default::default(), |cx| {
4823 build_editor(buffer.clone(), settings, cx)
4824 })
4825 .1;
4826
4827 // Cut with three selections. Clipboard text is divided into three slices.
4828 view.update(cx, |view, cx| {
4829 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
4830 view.cut(&Cut, cx);
4831 assert_eq!(view.display_text(cx), "two four six ");
4832 });
4833
4834 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4835 view.update(cx, |view, cx| {
4836 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
4837 view.paste(&Paste, cx);
4838 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4839 assert_eq!(
4840 view.selection_ranges(cx),
4841 &[
4842 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4843 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4844 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4845 ]
4846 );
4847 });
4848
4849 // Paste again but with only two cursors. Since the number of cursors doesn't
4850 // match the number of slices in the clipboard, the entire clipboard text
4851 // is pasted at each cursor.
4852 view.update(cx, |view, cx| {
4853 view.select_ranges(vec![0..0, 31..31], None, cx);
4854 view.handle_input(&Input("( ".into()), cx);
4855 view.paste(&Paste, cx);
4856 view.handle_input(&Input(") ".into()), cx);
4857 assert_eq!(
4858 view.display_text(cx),
4859 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4860 );
4861 });
4862
4863 view.update(cx, |view, cx| {
4864 view.select_ranges(vec![0..0], None, cx);
4865 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4866 assert_eq!(
4867 view.display_text(cx),
4868 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4869 );
4870 });
4871
4872 // Cut with three selections, one of which is full-line.
4873 view.update(cx, |view, cx| {
4874 view.select_display_ranges(
4875 &[
4876 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4877 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4878 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4879 ],
4880 cx,
4881 )
4882 .unwrap();
4883 view.cut(&Cut, cx);
4884 assert_eq!(
4885 view.display_text(cx),
4886 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4887 );
4888 });
4889
4890 // Paste with three selections, noticing how the copied selection that was full-line
4891 // gets inserted before the second cursor.
4892 view.update(cx, |view, cx| {
4893 view.select_display_ranges(
4894 &[
4895 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4896 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4897 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4898 ],
4899 cx,
4900 )
4901 .unwrap();
4902 view.paste(&Paste, cx);
4903 assert_eq!(
4904 view.display_text(cx),
4905 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4906 );
4907 assert_eq!(
4908 view.selection_ranges(cx),
4909 &[
4910 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4911 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4912 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4913 ]
4914 );
4915 });
4916
4917 // Copy with a single cursor only, which writes the whole line into the clipboard.
4918 view.update(cx, |view, cx| {
4919 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4920 .unwrap();
4921 view.copy(&Copy, cx);
4922 });
4923
4924 // Paste with three selections, noticing how the copied full-line selection is inserted
4925 // before the empty selections but replaces the selection that is non-empty.
4926 view.update(cx, |view, cx| {
4927 view.select_display_ranges(
4928 &[
4929 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4930 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4931 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4932 ],
4933 cx,
4934 )
4935 .unwrap();
4936 view.paste(&Paste, cx);
4937 assert_eq!(
4938 view.display_text(cx),
4939 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4940 );
4941 assert_eq!(
4942 view.selection_ranges(cx),
4943 &[
4944 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4945 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4946 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4947 ]
4948 );
4949 });
4950 }
4951
4952 #[gpui::test]
4953 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4954 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
4955 let settings = EditorSettings::test(&cx);
4956 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4957 view.update(cx, |view, cx| {
4958 view.select_all(&SelectAll, cx);
4959 assert_eq!(
4960 view.selection_ranges(cx),
4961 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4962 );
4963 });
4964 }
4965
4966 #[gpui::test]
4967 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4968 let settings = EditorSettings::test(&cx);
4969 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
4970 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4971 view.update(cx, |view, cx| {
4972 view.select_display_ranges(
4973 &[
4974 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4975 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4976 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4977 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4978 ],
4979 cx,
4980 )
4981 .unwrap();
4982 view.select_line(&SelectLine, cx);
4983 assert_eq!(
4984 view.selection_ranges(cx),
4985 vec![
4986 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
4987 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
4988 ]
4989 );
4990 });
4991
4992 view.update(cx, |view, cx| {
4993 view.select_line(&SelectLine, cx);
4994 assert_eq!(
4995 view.selection_ranges(cx),
4996 vec![
4997 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
4998 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
4999 ]
5000 );
5001 });
5002
5003 view.update(cx, |view, cx| {
5004 view.select_line(&SelectLine, cx);
5005 assert_eq!(
5006 view.selection_ranges(cx),
5007 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5008 );
5009 });
5010 }
5011
5012 #[gpui::test]
5013 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5014 let settings = EditorSettings::test(&cx);
5015 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5016 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5017 view.update(cx, |view, cx| {
5018 view.fold_ranges(
5019 vec![
5020 Point::new(0, 2)..Point::new(1, 2),
5021 Point::new(2, 3)..Point::new(4, 1),
5022 Point::new(7, 0)..Point::new(8, 4),
5023 ],
5024 cx,
5025 );
5026 view.select_display_ranges(
5027 &[
5028 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5029 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5030 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5031 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5032 ],
5033 cx,
5034 )
5035 .unwrap();
5036 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5037 });
5038
5039 view.update(cx, |view, cx| {
5040 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5041 assert_eq!(
5042 view.display_text(cx),
5043 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5044 );
5045 assert_eq!(
5046 view.selection_ranges(cx),
5047 [
5048 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5049 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5050 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5051 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5052 ]
5053 );
5054 });
5055
5056 view.update(cx, |view, cx| {
5057 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5058 .unwrap();
5059 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5060 assert_eq!(
5061 view.display_text(cx),
5062 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5063 );
5064 assert_eq!(
5065 view.selection_ranges(cx),
5066 [
5067 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5068 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5069 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5070 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5071 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5072 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5073 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5074 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5075 ]
5076 );
5077 });
5078 }
5079
5080 #[gpui::test]
5081 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5082 let settings = EditorSettings::test(&cx);
5083 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5084 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5085
5086 view.update(cx, |view, cx| {
5087 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5088 .unwrap();
5089 });
5090 view.update(cx, |view, cx| {
5091 view.add_selection_above(&AddSelectionAbove, cx);
5092 assert_eq!(
5093 view.selection_ranges(cx),
5094 vec![
5095 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5096 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5097 ]
5098 );
5099 });
5100
5101 view.update(cx, |view, cx| {
5102 view.add_selection_above(&AddSelectionAbove, cx);
5103 assert_eq!(
5104 view.selection_ranges(cx),
5105 vec![
5106 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5107 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5108 ]
5109 );
5110 });
5111
5112 view.update(cx, |view, cx| {
5113 view.add_selection_below(&AddSelectionBelow, cx);
5114 assert_eq!(
5115 view.selection_ranges(cx),
5116 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5117 );
5118 });
5119
5120 view.update(cx, |view, cx| {
5121 view.add_selection_below(&AddSelectionBelow, cx);
5122 assert_eq!(
5123 view.selection_ranges(cx),
5124 vec![
5125 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5126 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5127 ]
5128 );
5129 });
5130
5131 view.update(cx, |view, cx| {
5132 view.add_selection_below(&AddSelectionBelow, cx);
5133 assert_eq!(
5134 view.selection_ranges(cx),
5135 vec![
5136 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5137 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5138 ]
5139 );
5140 });
5141
5142 view.update(cx, |view, cx| {
5143 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5144 .unwrap();
5145 });
5146 view.update(cx, |view, cx| {
5147 view.add_selection_below(&AddSelectionBelow, cx);
5148 assert_eq!(
5149 view.selection_ranges(cx),
5150 vec![
5151 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5152 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5153 ]
5154 );
5155 });
5156
5157 view.update(cx, |view, cx| {
5158 view.add_selection_below(&AddSelectionBelow, cx);
5159 assert_eq!(
5160 view.selection_ranges(cx),
5161 vec![
5162 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5163 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5164 ]
5165 );
5166 });
5167
5168 view.update(cx, |view, cx| {
5169 view.add_selection_above(&AddSelectionAbove, cx);
5170 assert_eq!(
5171 view.selection_ranges(cx),
5172 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5173 );
5174 });
5175
5176 view.update(cx, |view, cx| {
5177 view.add_selection_above(&AddSelectionAbove, cx);
5178 assert_eq!(
5179 view.selection_ranges(cx),
5180 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5181 );
5182 });
5183
5184 view.update(cx, |view, cx| {
5185 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5186 .unwrap();
5187 view.add_selection_below(&AddSelectionBelow, cx);
5188 assert_eq!(
5189 view.selection_ranges(cx),
5190 vec![
5191 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5192 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5193 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5194 ]
5195 );
5196 });
5197
5198 view.update(cx, |view, cx| {
5199 view.add_selection_below(&AddSelectionBelow, cx);
5200 assert_eq!(
5201 view.selection_ranges(cx),
5202 vec![
5203 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5204 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5205 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5206 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5207 ]
5208 );
5209 });
5210
5211 view.update(cx, |view, cx| {
5212 view.add_selection_above(&AddSelectionAbove, cx);
5213 assert_eq!(
5214 view.selection_ranges(cx),
5215 vec![
5216 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5217 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5218 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5219 ]
5220 );
5221 });
5222
5223 view.update(cx, |view, cx| {
5224 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5225 .unwrap();
5226 });
5227 view.update(cx, |view, cx| {
5228 view.add_selection_above(&AddSelectionAbove, cx);
5229 assert_eq!(
5230 view.selection_ranges(cx),
5231 vec![
5232 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5233 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5234 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5235 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5236 ]
5237 );
5238 });
5239
5240 view.update(cx, |view, cx| {
5241 view.add_selection_below(&AddSelectionBelow, cx);
5242 assert_eq!(
5243 view.selection_ranges(cx),
5244 vec![
5245 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5246 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5247 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5248 ]
5249 );
5250 });
5251 }
5252
5253 #[gpui::test]
5254 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5255 let settings = cx.read(EditorSettings::test);
5256 let language = Some(Arc::new(Language::new(
5257 LanguageConfig::default(),
5258 Some(tree_sitter_rust::language()),
5259 )));
5260
5261 let text = r#"
5262 use mod1::mod2::{mod3, mod4};
5263
5264 fn fn_1(param1: bool, param2: &str) {
5265 let var1 = "text";
5266 }
5267 "#
5268 .unindent();
5269
5270 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5271 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5272 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5273 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5274 .await;
5275
5276 view.update(&mut cx, |view, cx| {
5277 view.select_display_ranges(
5278 &[
5279 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5280 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5281 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5282 ],
5283 cx,
5284 )
5285 .unwrap();
5286 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5287 });
5288 assert_eq!(
5289 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5290 &[
5291 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5292 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5293 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5294 ]
5295 );
5296
5297 view.update(&mut cx, |view, cx| {
5298 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5299 });
5300 assert_eq!(
5301 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5302 &[
5303 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5304 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5305 ]
5306 );
5307
5308 view.update(&mut cx, |view, cx| {
5309 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5310 });
5311 assert_eq!(
5312 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5313 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5314 );
5315
5316 // Trying to expand the selected syntax node one more time has no effect.
5317 view.update(&mut cx, |view, cx| {
5318 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5319 });
5320 assert_eq!(
5321 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5322 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5323 );
5324
5325 view.update(&mut cx, |view, cx| {
5326 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5327 });
5328 assert_eq!(
5329 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5330 &[
5331 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5332 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5333 ]
5334 );
5335
5336 view.update(&mut cx, |view, cx| {
5337 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5338 });
5339 assert_eq!(
5340 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5341 &[
5342 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5343 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5344 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5345 ]
5346 );
5347
5348 view.update(&mut cx, |view, cx| {
5349 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5350 });
5351 assert_eq!(
5352 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5353 &[
5354 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5355 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5356 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5357 ]
5358 );
5359
5360 // Trying to shrink the selected syntax node one more time has no effect.
5361 view.update(&mut cx, |view, cx| {
5362 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5363 });
5364 assert_eq!(
5365 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5366 &[
5367 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5368 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5369 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5370 ]
5371 );
5372
5373 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5374 // a fold.
5375 view.update(&mut cx, |view, cx| {
5376 view.fold_ranges(
5377 vec![
5378 Point::new(0, 21)..Point::new(0, 24),
5379 Point::new(3, 20)..Point::new(3, 22),
5380 ],
5381 cx,
5382 );
5383 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5384 });
5385 assert_eq!(
5386 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5387 &[
5388 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5389 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5390 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5391 ]
5392 );
5393 }
5394
5395 #[gpui::test]
5396 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5397 let settings = cx.read(EditorSettings::test);
5398 let language = Some(Arc::new(Language::new(
5399 LanguageConfig {
5400 brackets: vec![
5401 BracketPair {
5402 start: "{".to_string(),
5403 end: "}".to_string(),
5404 close: true,
5405 newline: true,
5406 },
5407 BracketPair {
5408 start: "/*".to_string(),
5409 end: " */".to_string(),
5410 close: true,
5411 newline: true,
5412 },
5413 ],
5414 ..Default::default()
5415 },
5416 Some(tree_sitter_rust::language()),
5417 )));
5418
5419 let text = r#"
5420 a
5421
5422 /
5423
5424 "#
5425 .unindent();
5426
5427 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5428 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5429 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5430 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5431 .await;
5432
5433 view.update(&mut cx, |view, cx| {
5434 view.select_display_ranges(
5435 &[
5436 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5437 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5438 ],
5439 cx,
5440 )
5441 .unwrap();
5442 view.handle_input(&Input("{".to_string()), cx);
5443 view.handle_input(&Input("{".to_string()), cx);
5444 view.handle_input(&Input("{".to_string()), cx);
5445 assert_eq!(
5446 view.text(cx),
5447 "
5448 {{{}}}
5449 {{{}}}
5450 /
5451
5452 "
5453 .unindent()
5454 );
5455
5456 view.move_right(&MoveRight, cx);
5457 view.handle_input(&Input("}".to_string()), cx);
5458 view.handle_input(&Input("}".to_string()), cx);
5459 view.handle_input(&Input("}".to_string()), cx);
5460 assert_eq!(
5461 view.text(cx),
5462 "
5463 {{{}}}}
5464 {{{}}}}
5465 /
5466
5467 "
5468 .unindent()
5469 );
5470
5471 view.undo(&Undo, cx);
5472 view.handle_input(&Input("/".to_string()), cx);
5473 view.handle_input(&Input("*".to_string()), cx);
5474 assert_eq!(
5475 view.text(cx),
5476 "
5477 /* */
5478 /* */
5479 /
5480
5481 "
5482 .unindent()
5483 );
5484
5485 view.undo(&Undo, cx);
5486 view.select_display_ranges(
5487 &[
5488 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5489 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5490 ],
5491 cx,
5492 )
5493 .unwrap();
5494 view.handle_input(&Input("*".to_string()), cx);
5495 assert_eq!(
5496 view.text(cx),
5497 "
5498 a
5499
5500 /*
5501 *
5502 "
5503 .unindent()
5504 );
5505 });
5506 }
5507
5508 #[gpui::test]
5509 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5510 let settings = cx.read(EditorSettings::test);
5511 let language = Some(Arc::new(Language::new(
5512 LanguageConfig {
5513 line_comment: Some("// ".to_string()),
5514 ..Default::default()
5515 },
5516 Some(tree_sitter_rust::language()),
5517 )));
5518
5519 let text = "
5520 fn a() {
5521 //b();
5522 // c();
5523 // d();
5524 }
5525 "
5526 .unindent();
5527
5528 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5529 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5530 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5531
5532 view.update(&mut cx, |editor, cx| {
5533 // If multiple selections intersect a line, the line is only
5534 // toggled once.
5535 editor
5536 .select_display_ranges(
5537 &[
5538 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5539 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5540 ],
5541 cx,
5542 )
5543 .unwrap();
5544 editor.toggle_comments(&ToggleComments, cx);
5545 assert_eq!(
5546 editor.text(cx),
5547 "
5548 fn a() {
5549 b();
5550 c();
5551 d();
5552 }
5553 "
5554 .unindent()
5555 );
5556
5557 // The comment prefix is inserted at the same column for every line
5558 // in a selection.
5559 editor
5560 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5561 .unwrap();
5562 editor.toggle_comments(&ToggleComments, cx);
5563 assert_eq!(
5564 editor.text(cx),
5565 "
5566 fn a() {
5567 // b();
5568 // c();
5569 // d();
5570 }
5571 "
5572 .unindent()
5573 );
5574
5575 // If a selection ends at the beginning of a line, that line is not toggled.
5576 editor
5577 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5578 .unwrap();
5579 editor.toggle_comments(&ToggleComments, cx);
5580 assert_eq!(
5581 editor.text(cx),
5582 "
5583 fn a() {
5584 // b();
5585 c();
5586 // d();
5587 }
5588 "
5589 .unindent()
5590 );
5591 });
5592 }
5593
5594 #[gpui::test]
5595 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5596 let settings = cx.read(EditorSettings::test);
5597 let language = Some(Arc::new(Language::new(
5598 LanguageConfig {
5599 brackets: vec![
5600 BracketPair {
5601 start: "{".to_string(),
5602 end: "}".to_string(),
5603 close: true,
5604 newline: true,
5605 },
5606 BracketPair {
5607 start: "/* ".to_string(),
5608 end: " */".to_string(),
5609 close: true,
5610 newline: true,
5611 },
5612 ],
5613 ..Default::default()
5614 },
5615 Some(tree_sitter_rust::language()),
5616 )));
5617
5618 let text = concat!(
5619 "{ }\n", // Suppress rustfmt
5620 " x\n", //
5621 " /* */\n", //
5622 "x\n", //
5623 "{{} }\n", //
5624 );
5625
5626 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5627 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5628 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5629 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5630 .await;
5631
5632 view.update(&mut cx, |view, cx| {
5633 view.select_display_ranges(
5634 &[
5635 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5636 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5637 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5638 ],
5639 cx,
5640 )
5641 .unwrap();
5642 view.newline(&Newline, cx);
5643
5644 assert_eq!(
5645 view.buffer().read(cx).read(cx).text(),
5646 concat!(
5647 "{ \n", // Suppress rustfmt
5648 "\n", //
5649 "}\n", //
5650 " x\n", //
5651 " /* \n", //
5652 " \n", //
5653 " */\n", //
5654 "x\n", //
5655 "{{} \n", //
5656 "}\n", //
5657 )
5658 );
5659 });
5660 }
5661
5662 impl Editor {
5663 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5664 let snapshot = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5665 self.selections
5666 .iter()
5667 .map(|s| {
5668 let mut range =
5669 s.start.to_display_point(&snapshot)..s.end.to_display_point(&snapshot);
5670 if s.reversed {
5671 mem::swap(&mut range.start, &mut range.end);
5672 }
5673 range
5674 })
5675 .collect()
5676 }
5677 }
5678
5679 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5680 let point = DisplayPoint::new(row as u32, column as u32);
5681 point..point
5682 }
5683
5684 fn build_editor(
5685 buffer: ModelHandle<MultiBuffer>,
5686 settings: EditorSettings,
5687 cx: &mut ViewContext<Editor>,
5688 ) -> Editor {
5689 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5690 }
5691}
5692
5693trait RangeExt<T> {
5694 fn sorted(&self) -> Range<T>;
5695 fn to_inclusive(&self) -> RangeInclusive<T>;
5696}
5697
5698impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5699 fn sorted(&self) -> Self {
5700 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5701 }
5702
5703 fn to_inclusive(&self) -> RangeInclusive<T> {
5704 self.start.clone()..=self.end.clone()
5705 }
5706}