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
3054 let mut summaries = buffer
3055 .summaries_for_anchors::<D, _>(self.selections.iter().flat_map(|s| [&s.start, &s.end]))
3056 .into_iter();
3057
3058 let mut selections = self
3059 .selections
3060 .iter()
3061 .map(|s| Selection {
3062 id: s.id,
3063 start: summaries.next().unwrap(),
3064 end: summaries.next().unwrap(),
3065 reversed: s.reversed,
3066 goal: s.goal,
3067 })
3068 .peekable();
3069
3070 let mut pending_selection = self.pending_selection::<D>(&buffer, cx);
3071
3072 iter::from_fn(move || {
3073 if let Some(pending) = pending_selection.as_mut() {
3074 while let Some(next_selection) = selections.peek() {
3075 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3076 let next_selection = selections.next().unwrap();
3077 if next_selection.start < pending.start {
3078 pending.start = next_selection.start;
3079 }
3080 if next_selection.end > pending.end {
3081 pending.end = next_selection.end;
3082 }
3083 } else if next_selection.end < pending.start {
3084 return selections.next();
3085 } else {
3086 break;
3087 }
3088 }
3089
3090 pending_selection.take()
3091 } else {
3092 selections.next()
3093 }
3094 })
3095 .collect()
3096 }
3097
3098 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3099 &self,
3100 snapshot: &MultiBufferSnapshot,
3101 cx: &AppContext,
3102 ) -> Option<Selection<D>> {
3103 self.pending_selection
3104 .as_ref()
3105 .map(|pending| self.resolve_selection(&pending.selection, &snapshot, cx))
3106 }
3107
3108 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3109 &self,
3110 selection: &Selection<Anchor>,
3111 buffer: &MultiBufferSnapshot,
3112 cx: &AppContext,
3113 ) -> Selection<D> {
3114 Selection {
3115 id: selection.id,
3116 start: selection.start.summary::<D>(&buffer),
3117 end: selection.end.summary::<D>(&buffer),
3118 reversed: selection.reversed,
3119 goal: selection.goal,
3120 }
3121 }
3122
3123 fn selection_count<'a>(&self, cx: &'a AppContext) -> usize {
3124 let mut count = self.selections.len();
3125 if self.pending_selection.is_some() {
3126 count += 1;
3127 }
3128 count
3129 }
3130
3131 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3132 &self,
3133 snapshot: &MultiBufferSnapshot,
3134 cx: &AppContext,
3135 ) -> Selection<D> {
3136 self.selections
3137 .iter()
3138 .min_by_key(|s| s.id)
3139 .map(|selection| self.resolve_selection(selection, snapshot, cx))
3140 .or_else(|| self.pending_selection(snapshot, cx))
3141 .unwrap()
3142 }
3143
3144 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3145 &self,
3146 snapshot: &MultiBufferSnapshot,
3147 cx: &AppContext,
3148 ) -> Selection<D> {
3149 self.pending_selection(snapshot, cx)
3150 .or_else(|| {
3151 self.selections
3152 .iter()
3153 .min_by_key(|s| s.id)
3154 .map(|selection| self.resolve_selection(selection, snapshot, cx))
3155 })
3156 .unwrap()
3157 }
3158
3159 pub fn update_selections<T>(
3160 &mut self,
3161 mut selections: Vec<Selection<T>>,
3162 autoscroll: Option<Autoscroll>,
3163 cx: &mut ViewContext<Self>,
3164 ) where
3165 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3166 {
3167 // Merge overlapping selections.
3168 let buffer = self.buffer.read(cx).snapshot(cx);
3169 let mut i = 1;
3170 while i < selections.len() {
3171 if selections[i - 1].end >= selections[i].start {
3172 let removed = selections.remove(i);
3173 if removed.start < selections[i - 1].start {
3174 selections[i - 1].start = removed.start;
3175 }
3176 if removed.end > selections[i - 1].end {
3177 selections[i - 1].end = removed.end;
3178 }
3179 } else {
3180 i += 1;
3181 }
3182 }
3183
3184 self.pending_selection = None;
3185 self.add_selections_state = None;
3186 self.select_next_state = None;
3187 self.select_larger_syntax_node_stack.clear();
3188 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3189 let all_selections_inside_autoclose_ranges =
3190 if selections.len() == autoclose_pair.ranges.len() {
3191 selections
3192 .iter()
3193 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3194 .all(|(selection, autoclose_range)| {
3195 let head = selection.head().to_point(&buffer);
3196 autoclose_range.start <= head && autoclose_range.end >= head
3197 })
3198 } else {
3199 false
3200 };
3201
3202 if all_selections_inside_autoclose_ranges {
3203 break;
3204 } else {
3205 self.autoclose_stack.pop();
3206 }
3207 }
3208
3209 if let Some(autoscroll) = autoscroll {
3210 self.request_autoscroll(autoscroll, cx);
3211 }
3212 self.pause_cursor_blinking(cx);
3213
3214 self.selections = Arc::from_iter(selections.into_iter().map(|selection| Selection {
3215 id: selection.id,
3216 start: buffer.anchor_before(selection.start),
3217 end: buffer.anchor_before(selection.end),
3218 reversed: selection.reversed,
3219 goal: selection.goal,
3220 }));
3221 }
3222
3223 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3224 self.autoscroll_request = Some(autoscroll);
3225 cx.notify();
3226 }
3227
3228 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3229 self.end_selection(cx);
3230 self.buffer.update(cx, |buffer, cx| {
3231 buffer.start_transaction(cx);
3232 });
3233 }
3234
3235 fn end_transaction(&self, cx: &mut ViewContext<Self>) {
3236 self.buffer.update(cx, |buffer, cx| {
3237 buffer.end_transaction(cx);
3238 });
3239 }
3240
3241 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3242 log::info!("Editor::page_up");
3243 }
3244
3245 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3246 log::info!("Editor::page_down");
3247 }
3248
3249 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3250 let mut fold_ranges = Vec::new();
3251
3252 let selections = self.selections::<Point>(cx);
3253 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3254 for selection in selections {
3255 let range = selection.display_range(&display_map).sorted();
3256 let buffer_start_row = range.start.to_point(&display_map).row;
3257
3258 for row in (0..=range.end.row()).rev() {
3259 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3260 let fold_range = self.foldable_range_for_line(&display_map, row);
3261 if fold_range.end.row >= buffer_start_row {
3262 fold_ranges.push(fold_range);
3263 if row <= range.start.row() {
3264 break;
3265 }
3266 }
3267 }
3268 }
3269 }
3270
3271 self.fold_ranges(fold_ranges, cx);
3272 }
3273
3274 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3275 let selections = self.selections::<Point>(cx);
3276 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3277 let buffer = &display_map.buffer_snapshot;
3278 let ranges = selections
3279 .iter()
3280 .map(|s| {
3281 let range = s.display_range(&display_map).sorted();
3282 let mut start = range.start.to_point(&display_map);
3283 let mut end = range.end.to_point(&display_map);
3284 start.column = 0;
3285 end.column = buffer.line_len(end.row);
3286 start..end
3287 })
3288 .collect::<Vec<_>>();
3289 self.unfold_ranges(ranges, cx);
3290 }
3291
3292 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3293 let max_point = display_map.max_point();
3294 if display_row >= max_point.row() {
3295 false
3296 } else {
3297 let (start_indent, is_blank) = display_map.line_indent(display_row);
3298 if is_blank {
3299 false
3300 } else {
3301 for display_row in display_row + 1..=max_point.row() {
3302 let (indent, is_blank) = display_map.line_indent(display_row);
3303 if !is_blank {
3304 return indent > start_indent;
3305 }
3306 }
3307 false
3308 }
3309 }
3310 }
3311
3312 fn foldable_range_for_line(
3313 &self,
3314 display_map: &DisplaySnapshot,
3315 start_row: u32,
3316 ) -> Range<Point> {
3317 let max_point = display_map.max_point();
3318
3319 let (start_indent, _) = display_map.line_indent(start_row);
3320 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3321 let mut end = None;
3322 for row in start_row + 1..=max_point.row() {
3323 let (indent, is_blank) = display_map.line_indent(row);
3324 if !is_blank && indent <= start_indent {
3325 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3326 break;
3327 }
3328 }
3329
3330 let end = end.unwrap_or(max_point);
3331 return start.to_point(display_map)..end.to_point(display_map);
3332 }
3333
3334 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3335 let selections = self.selections::<Point>(cx);
3336 let ranges = selections.into_iter().map(|s| s.start..s.end);
3337 self.fold_ranges(ranges, cx);
3338 }
3339
3340 fn fold_ranges<T: ToOffset>(
3341 &mut self,
3342 ranges: impl IntoIterator<Item = Range<T>>,
3343 cx: &mut ViewContext<Self>,
3344 ) {
3345 let mut ranges = ranges.into_iter().peekable();
3346 if ranges.peek().is_some() {
3347 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3348 self.request_autoscroll(Autoscroll::Fit, cx);
3349 cx.notify();
3350 }
3351 }
3352
3353 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3354 if !ranges.is_empty() {
3355 self.display_map
3356 .update(cx, |map, cx| map.unfold(ranges, cx));
3357 self.request_autoscroll(Autoscroll::Fit, cx);
3358 cx.notify();
3359 }
3360 }
3361
3362 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3363 self.display_map
3364 .update(cx, |map, cx| map.snapshot(cx))
3365 .longest_row()
3366 }
3367
3368 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3369 self.display_map
3370 .update(cx, |map, cx| map.snapshot(cx))
3371 .max_point()
3372 }
3373
3374 pub fn text(&self, cx: &AppContext) -> String {
3375 self.buffer.read(cx).read(cx).text()
3376 }
3377
3378 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3379 self.display_map
3380 .update(cx, |map, cx| map.snapshot(cx))
3381 .text()
3382 }
3383
3384 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3385 self.display_map
3386 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3387 }
3388
3389 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3390 self.highlighted_row = row;
3391 }
3392
3393 pub fn highlighted_row(&mut self) -> Option<u32> {
3394 self.highlighted_row
3395 }
3396
3397 fn next_blink_epoch(&mut self) -> usize {
3398 self.blink_epoch += 1;
3399 self.blink_epoch
3400 }
3401
3402 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3403 self.show_local_cursors = true;
3404 cx.notify();
3405
3406 let epoch = self.next_blink_epoch();
3407 cx.spawn(|this, mut cx| {
3408 let this = this.downgrade();
3409 async move {
3410 Timer::after(CURSOR_BLINK_INTERVAL).await;
3411 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3412 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3413 }
3414 }
3415 })
3416 .detach();
3417 }
3418
3419 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3420 if epoch == self.blink_epoch {
3421 self.blinking_paused = false;
3422 self.blink_cursors(epoch, cx);
3423 }
3424 }
3425
3426 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3427 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3428 self.show_local_cursors = !self.show_local_cursors;
3429 cx.notify();
3430
3431 let epoch = self.next_blink_epoch();
3432 cx.spawn(|this, mut cx| {
3433 let this = this.downgrade();
3434 async move {
3435 Timer::after(CURSOR_BLINK_INTERVAL).await;
3436 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3437 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3438 }
3439 }
3440 })
3441 .detach();
3442 }
3443 }
3444
3445 pub fn show_local_cursors(&self) -> bool {
3446 self.show_local_cursors
3447 }
3448
3449 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3450 self.refresh_active_diagnostics(cx);
3451 cx.notify();
3452 }
3453
3454 fn on_buffer_event(
3455 &mut self,
3456 _: ModelHandle<MultiBuffer>,
3457 event: &language::Event,
3458 cx: &mut ViewContext<Self>,
3459 ) {
3460 match event {
3461 language::Event::Edited => cx.emit(Event::Edited),
3462 language::Event::Dirtied => cx.emit(Event::Dirtied),
3463 language::Event::Saved => cx.emit(Event::Saved),
3464 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3465 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3466 language::Event::Closed => cx.emit(Event::Closed),
3467 _ => {}
3468 }
3469 }
3470
3471 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3472 cx.notify();
3473 }
3474}
3475
3476impl EditorSnapshot {
3477 pub fn is_focused(&self) -> bool {
3478 self.is_focused
3479 }
3480
3481 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3482 self.placeholder_text.as_ref()
3483 }
3484
3485 pub fn scroll_position(&self) -> Vector2F {
3486 compute_scroll_position(
3487 &self.display_snapshot,
3488 self.scroll_position,
3489 &self.scroll_top_anchor,
3490 )
3491 }
3492}
3493
3494impl Deref for EditorSnapshot {
3495 type Target = DisplaySnapshot;
3496
3497 fn deref(&self) -> &Self::Target {
3498 &self.display_snapshot
3499 }
3500}
3501
3502impl EditorSettings {
3503 #[cfg(any(test, feature = "test-support"))]
3504 pub fn test(cx: &AppContext) -> Self {
3505 Self {
3506 tab_size: 4,
3507 soft_wrap: SoftWrap::None,
3508 style: {
3509 let font_cache: &gpui::FontCache = cx.font_cache();
3510 let font_family_name = Arc::from("Monaco");
3511 let font_properties = Default::default();
3512 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3513 let font_id = font_cache
3514 .select_font(font_family_id, &font_properties)
3515 .unwrap();
3516 EditorStyle {
3517 text: gpui::fonts::TextStyle {
3518 font_family_name,
3519 font_family_id,
3520 font_id,
3521 font_size: 14.,
3522 color: gpui::color::Color::from_u32(0xff0000ff),
3523 font_properties,
3524 underline: None,
3525 },
3526 placeholder_text: None,
3527 background: Default::default(),
3528 gutter_background: Default::default(),
3529 active_line_background: Default::default(),
3530 highlighted_line_background: Default::default(),
3531 line_number: Default::default(),
3532 line_number_active: Default::default(),
3533 selection: Default::default(),
3534 guest_selections: Default::default(),
3535 syntax: Default::default(),
3536 error_diagnostic: Default::default(),
3537 invalid_error_diagnostic: Default::default(),
3538 warning_diagnostic: Default::default(),
3539 invalid_warning_diagnostic: Default::default(),
3540 information_diagnostic: Default::default(),
3541 invalid_information_diagnostic: Default::default(),
3542 hint_diagnostic: Default::default(),
3543 invalid_hint_diagnostic: Default::default(),
3544 }
3545 },
3546 }
3547 }
3548}
3549
3550fn compute_scroll_position(
3551 snapshot: &DisplaySnapshot,
3552 mut scroll_position: Vector2F,
3553 scroll_top_anchor: &Anchor,
3554) -> Vector2F {
3555 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3556 scroll_position.set_y(scroll_top + scroll_position.y());
3557 scroll_position
3558}
3559
3560pub enum Event {
3561 Activate,
3562 Edited,
3563 Blurred,
3564 Dirtied,
3565 Saved,
3566 FileHandleChanged,
3567 Closed,
3568}
3569
3570impl Entity for Editor {
3571 type Event = Event;
3572}
3573
3574impl View for Editor {
3575 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3576 let settings = self.build_settings.borrow_mut()(cx);
3577 self.display_map.update(cx, |map, cx| {
3578 map.set_font(
3579 settings.style.text.font_id,
3580 settings.style.text.font_size,
3581 cx,
3582 )
3583 });
3584 EditorElement::new(self.handle.clone(), settings).boxed()
3585 }
3586
3587 fn ui_name() -> &'static str {
3588 "Editor"
3589 }
3590
3591 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3592 self.focused = true;
3593 self.blink_cursors(self.blink_epoch, cx);
3594 }
3595
3596 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3597 self.focused = false;
3598 self.show_local_cursors = false;
3599 cx.emit(Event::Blurred);
3600 cx.notify();
3601 }
3602
3603 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3604 let mut cx = Self::default_keymap_context();
3605 let mode = match self.mode {
3606 EditorMode::SingleLine => "single_line",
3607 EditorMode::AutoHeight { .. } => "auto_height",
3608 EditorMode::Full => "full",
3609 };
3610 cx.map.insert("mode".into(), mode.into());
3611 cx
3612 }
3613}
3614
3615impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3616 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3617 let start = self.start.to_point(buffer);
3618 let end = self.end.to_point(buffer);
3619 if self.reversed {
3620 end..start
3621 } else {
3622 start..end
3623 }
3624 }
3625
3626 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3627 let start = self.start.to_offset(buffer);
3628 let end = self.end.to_offset(buffer);
3629 if self.reversed {
3630 end..start
3631 } else {
3632 start..end
3633 }
3634 }
3635
3636 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3637 let start = self
3638 .start
3639 .to_point(&map.buffer_snapshot)
3640 .to_display_point(map);
3641 let end = self
3642 .end
3643 .to_point(&map.buffer_snapshot)
3644 .to_display_point(map);
3645 if self.reversed {
3646 end..start
3647 } else {
3648 start..end
3649 }
3650 }
3651
3652 fn spanned_rows(
3653 &self,
3654 include_end_if_at_line_start: bool,
3655 map: &DisplaySnapshot,
3656 ) -> SpannedRows {
3657 let display_start = self
3658 .start
3659 .to_point(&map.buffer_snapshot)
3660 .to_display_point(map);
3661 let mut display_end = self
3662 .end
3663 .to_point(&map.buffer_snapshot)
3664 .to_display_point(map);
3665 if !include_end_if_at_line_start
3666 && display_end.row() != map.max_point().row()
3667 && display_start.row() != display_end.row()
3668 && display_end.column() == 0
3669 {
3670 *display_end.row_mut() -= 1;
3671 }
3672
3673 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3674 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3675
3676 SpannedRows {
3677 buffer_rows: buffer_start.row..buffer_end.row + 1,
3678 display_rows: display_start.row()..display_end.row() + 1,
3679 }
3680 }
3681}
3682
3683fn render_diagnostic(
3684 diagnostic: Diagnostic,
3685 style: &EditorStyle,
3686 valid: bool,
3687 anchor_x: f32,
3688) -> ElementBox {
3689 let mut text_style = style.text.clone();
3690 text_style.color = diagnostic_style(diagnostic.severity, valid, &style).text;
3691 Text::new(diagnostic.message, text_style)
3692 .contained()
3693 .with_margin_left(anchor_x)
3694 .boxed()
3695}
3696
3697pub fn diagnostic_style(
3698 severity: DiagnosticSeverity,
3699 valid: bool,
3700 style: &EditorStyle,
3701) -> DiagnosticStyle {
3702 match (severity, valid) {
3703 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3704 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3705 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3706 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3707 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3708 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3709 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3710 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3711 _ => Default::default(),
3712 }
3713}
3714
3715#[cfg(test)]
3716mod tests {
3717 use std::mem;
3718
3719 use super::*;
3720 use language::LanguageConfig;
3721 use text::Point;
3722 use unindent::Unindent;
3723 use util::test::sample_text;
3724
3725 #[gpui::test]
3726 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3727 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3728 let settings = EditorSettings::test(cx);
3729 let (_, editor) =
3730 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3731
3732 editor.update(cx, |view, cx| {
3733 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3734 });
3735
3736 assert_eq!(
3737 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3738 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3739 );
3740
3741 editor.update(cx, |view, cx| {
3742 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3743 });
3744
3745 assert_eq!(
3746 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3747 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3748 );
3749
3750 editor.update(cx, |view, cx| {
3751 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3752 });
3753
3754 assert_eq!(
3755 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3756 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3757 );
3758
3759 editor.update(cx, |view, cx| {
3760 view.end_selection(cx);
3761 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3762 });
3763
3764 assert_eq!(
3765 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3766 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3767 );
3768
3769 editor.update(cx, |view, cx| {
3770 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
3771 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
3772 });
3773
3774 assert_eq!(
3775 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3776 [
3777 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
3778 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
3779 ]
3780 );
3781
3782 editor.update(cx, |view, cx| {
3783 view.end_selection(cx);
3784 });
3785
3786 assert_eq!(
3787 editor.update(cx, |view, cx| view.selection_ranges(cx)),
3788 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
3789 );
3790 }
3791
3792 #[gpui::test]
3793 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
3794 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3795 let settings = EditorSettings::test(cx);
3796 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3797
3798 view.update(cx, |view, cx| {
3799 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3800 assert_eq!(
3801 view.selection_ranges(cx),
3802 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3803 );
3804 });
3805
3806 view.update(cx, |view, cx| {
3807 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3808 assert_eq!(
3809 view.selection_ranges(cx),
3810 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3811 );
3812 });
3813
3814 view.update(cx, |view, cx| {
3815 view.cancel(&Cancel, cx);
3816 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3817 assert_eq!(
3818 view.selection_ranges(cx),
3819 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3820 );
3821 });
3822 }
3823
3824 #[gpui::test]
3825 fn test_cancel(cx: &mut gpui::MutableAppContext) {
3826 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3827 let settings = EditorSettings::test(cx);
3828 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3829
3830 view.update(cx, |view, cx| {
3831 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
3832 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3833 view.end_selection(cx);
3834
3835 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
3836 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
3837 view.end_selection(cx);
3838 assert_eq!(
3839 view.selection_ranges(cx),
3840 [
3841 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
3842 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
3843 ]
3844 );
3845 });
3846
3847 view.update(cx, |view, cx| {
3848 view.cancel(&Cancel, cx);
3849 assert_eq!(
3850 view.selection_ranges(cx),
3851 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
3852 );
3853 });
3854
3855 view.update(cx, |view, cx| {
3856 view.cancel(&Cancel, cx);
3857 assert_eq!(
3858 view.selection_ranges(cx),
3859 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
3860 );
3861 });
3862 }
3863
3864 #[gpui::test]
3865 fn test_fold(cx: &mut gpui::MutableAppContext) {
3866 let buffer = MultiBuffer::build_simple(
3867 &"
3868 impl Foo {
3869 // Hello!
3870
3871 fn a() {
3872 1
3873 }
3874
3875 fn b() {
3876 2
3877 }
3878
3879 fn c() {
3880 3
3881 }
3882 }
3883 "
3884 .unindent(),
3885 cx,
3886 );
3887 let settings = EditorSettings::test(&cx);
3888 let (_, view) = cx.add_window(Default::default(), |cx| {
3889 build_editor(buffer.clone(), settings, cx)
3890 });
3891
3892 view.update(cx, |view, cx| {
3893 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
3894 .unwrap();
3895 view.fold(&Fold, cx);
3896 assert_eq!(
3897 view.display_text(cx),
3898 "
3899 impl Foo {
3900 // Hello!
3901
3902 fn a() {
3903 1
3904 }
3905
3906 fn b() {…
3907 }
3908
3909 fn c() {…
3910 }
3911 }
3912 "
3913 .unindent(),
3914 );
3915
3916 view.fold(&Fold, cx);
3917 assert_eq!(
3918 view.display_text(cx),
3919 "
3920 impl Foo {…
3921 }
3922 "
3923 .unindent(),
3924 );
3925
3926 view.unfold(&Unfold, cx);
3927 assert_eq!(
3928 view.display_text(cx),
3929 "
3930 impl Foo {
3931 // Hello!
3932
3933 fn a() {
3934 1
3935 }
3936
3937 fn b() {…
3938 }
3939
3940 fn c() {…
3941 }
3942 }
3943 "
3944 .unindent(),
3945 );
3946
3947 view.unfold(&Unfold, cx);
3948 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
3949 });
3950 }
3951
3952 #[gpui::test]
3953 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
3954 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3955 let settings = EditorSettings::test(&cx);
3956 let (_, view) = cx.add_window(Default::default(), |cx| {
3957 build_editor(buffer.clone(), settings, cx)
3958 });
3959
3960 buffer.update(cx, |buffer, cx| {
3961 buffer.edit(
3962 vec![
3963 Point::new(1, 0)..Point::new(1, 0),
3964 Point::new(1, 1)..Point::new(1, 1),
3965 ],
3966 "\t",
3967 cx,
3968 );
3969 });
3970
3971 view.update(cx, |view, cx| {
3972 assert_eq!(
3973 view.selection_ranges(cx),
3974 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3975 );
3976
3977 view.move_down(&MoveDown, cx);
3978 assert_eq!(
3979 view.selection_ranges(cx),
3980 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3981 );
3982
3983 view.move_right(&MoveRight, cx);
3984 assert_eq!(
3985 view.selection_ranges(cx),
3986 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
3987 );
3988
3989 view.move_left(&MoveLeft, cx);
3990 assert_eq!(
3991 view.selection_ranges(cx),
3992 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
3993 );
3994
3995 view.move_up(&MoveUp, cx);
3996 assert_eq!(
3997 view.selection_ranges(cx),
3998 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
3999 );
4000
4001 view.move_to_end(&MoveToEnd, cx);
4002 assert_eq!(
4003 view.selection_ranges(cx),
4004 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4005 );
4006
4007 view.move_to_beginning(&MoveToBeginning, cx);
4008 assert_eq!(
4009 view.selection_ranges(cx),
4010 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4011 );
4012
4013 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4014 .unwrap();
4015 view.select_to_beginning(&SelectToBeginning, cx);
4016 assert_eq!(
4017 view.selection_ranges(cx),
4018 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4019 );
4020
4021 view.select_to_end(&SelectToEnd, cx);
4022 assert_eq!(
4023 view.selection_ranges(cx),
4024 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4025 );
4026 });
4027 }
4028
4029 #[gpui::test]
4030 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4031 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4032 let settings = EditorSettings::test(&cx);
4033 let (_, view) = cx.add_window(Default::default(), |cx| {
4034 build_editor(buffer.clone(), settings, cx)
4035 });
4036
4037 assert_eq!('ⓐ'.len_utf8(), 3);
4038 assert_eq!('α'.len_utf8(), 2);
4039
4040 view.update(cx, |view, cx| {
4041 view.fold_ranges(
4042 vec![
4043 Point::new(0, 6)..Point::new(0, 12),
4044 Point::new(1, 2)..Point::new(1, 4),
4045 Point::new(2, 4)..Point::new(2, 8),
4046 ],
4047 cx,
4048 );
4049 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4050
4051 view.move_right(&MoveRight, cx);
4052 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4053 view.move_right(&MoveRight, cx);
4054 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4055 view.move_right(&MoveRight, cx);
4056 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4057
4058 view.move_down(&MoveDown, cx);
4059 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…".len())]);
4060 view.move_left(&MoveLeft, cx);
4061 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab".len())]);
4062 view.move_left(&MoveLeft, cx);
4063 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "a".len())]);
4064
4065 view.move_down(&MoveDown, cx);
4066 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "α".len())]);
4067 view.move_right(&MoveRight, cx);
4068 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ".len())]);
4069 view.move_right(&MoveRight, cx);
4070 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…".len())]);
4071 view.move_right(&MoveRight, cx);
4072 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβ…ε".len())]);
4073
4074 view.move_up(&MoveUp, cx);
4075 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "ab…e".len())]);
4076 view.move_up(&MoveUp, cx);
4077 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())]);
4078 view.move_left(&MoveLeft, cx);
4079 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())]);
4080 view.move_left(&MoveLeft, cx);
4081 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐⓑ".len())]);
4082 view.move_left(&MoveLeft, cx);
4083 assert_eq!(view.selection_ranges(cx), &[empty_range(0, "ⓐ".len())]);
4084 });
4085 }
4086
4087 #[gpui::test]
4088 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4089 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4090 let settings = EditorSettings::test(&cx);
4091 let (_, view) = cx.add_window(Default::default(), |cx| {
4092 build_editor(buffer.clone(), settings, cx)
4093 });
4094 view.update(cx, |view, cx| {
4095 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4096 .unwrap();
4097
4098 view.move_down(&MoveDown, cx);
4099 assert_eq!(view.selection_ranges(cx), &[empty_range(1, "abcd".len())]);
4100
4101 view.move_down(&MoveDown, cx);
4102 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4103
4104 view.move_down(&MoveDown, cx);
4105 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4106
4107 view.move_down(&MoveDown, cx);
4108 assert_eq!(view.selection_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]);
4109
4110 view.move_up(&MoveUp, cx);
4111 assert_eq!(view.selection_ranges(cx), &[empty_range(3, "abcd".len())]);
4112
4113 view.move_up(&MoveUp, cx);
4114 assert_eq!(view.selection_ranges(cx), &[empty_range(2, "αβγ".len())]);
4115 });
4116 }
4117
4118 #[gpui::test]
4119 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4120 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4121 let settings = EditorSettings::test(&cx);
4122 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4123 view.update(cx, |view, cx| {
4124 view.select_display_ranges(
4125 &[
4126 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4127 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4128 ],
4129 cx,
4130 )
4131 .unwrap();
4132 });
4133
4134 view.update(cx, |view, cx| {
4135 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4136 assert_eq!(
4137 view.selection_ranges(cx),
4138 &[
4139 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4140 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4141 ]
4142 );
4143 });
4144
4145 view.update(cx, |view, cx| {
4146 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4147 assert_eq!(
4148 view.selection_ranges(cx),
4149 &[
4150 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4151 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4152 ]
4153 );
4154 });
4155
4156 view.update(cx, |view, cx| {
4157 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4158 assert_eq!(
4159 view.selection_ranges(cx),
4160 &[
4161 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4162 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4163 ]
4164 );
4165 });
4166
4167 view.update(cx, |view, cx| {
4168 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4169 assert_eq!(
4170 view.selection_ranges(cx),
4171 &[
4172 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4173 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4174 ]
4175 );
4176 });
4177
4178 // Moving to the end of line again is a no-op.
4179 view.update(cx, |view, cx| {
4180 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4181 assert_eq!(
4182 view.selection_ranges(cx),
4183 &[
4184 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4185 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4186 ]
4187 );
4188 });
4189
4190 view.update(cx, |view, cx| {
4191 view.move_left(&MoveLeft, cx);
4192 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4193 assert_eq!(
4194 view.selection_ranges(cx),
4195 &[
4196 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4197 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4198 ]
4199 );
4200 });
4201
4202 view.update(cx, |view, cx| {
4203 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4204 assert_eq!(
4205 view.selection_ranges(cx),
4206 &[
4207 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4208 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4209 ]
4210 );
4211 });
4212
4213 view.update(cx, |view, cx| {
4214 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4215 assert_eq!(
4216 view.selection_ranges(cx),
4217 &[
4218 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4219 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4220 ]
4221 );
4222 });
4223
4224 view.update(cx, |view, cx| {
4225 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4226 assert_eq!(
4227 view.selection_ranges(cx),
4228 &[
4229 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4230 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4231 ]
4232 );
4233 });
4234
4235 view.update(cx, |view, cx| {
4236 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4237 assert_eq!(view.display_text(cx), "ab\n de");
4238 assert_eq!(
4239 view.selection_ranges(cx),
4240 &[
4241 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4242 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4243 ]
4244 );
4245 });
4246
4247 view.update(cx, |view, cx| {
4248 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4249 assert_eq!(view.display_text(cx), "\n");
4250 assert_eq!(
4251 view.selection_ranges(cx),
4252 &[
4253 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4254 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4255 ]
4256 );
4257 });
4258 }
4259
4260 #[gpui::test]
4261 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4262 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4263 let settings = EditorSettings::test(&cx);
4264 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4265 view.update(cx, |view, cx| {
4266 view.select_display_ranges(
4267 &[
4268 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4269 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4270 ],
4271 cx,
4272 )
4273 .unwrap();
4274 });
4275
4276 view.update(cx, |view, cx| {
4277 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4278 assert_eq!(
4279 view.selection_ranges(cx),
4280 &[
4281 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4282 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4283 ]
4284 );
4285 });
4286
4287 view.update(cx, |view, cx| {
4288 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4289 assert_eq!(
4290 view.selection_ranges(cx),
4291 &[
4292 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4293 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4294 ]
4295 );
4296 });
4297
4298 view.update(cx, |view, cx| {
4299 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4300 assert_eq!(
4301 view.selection_ranges(cx),
4302 &[
4303 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4304 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4305 ]
4306 );
4307 });
4308
4309 view.update(cx, |view, cx| {
4310 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4311 assert_eq!(
4312 view.selection_ranges(cx),
4313 &[
4314 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4315 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4316 ]
4317 );
4318 });
4319
4320 view.update(cx, |view, cx| {
4321 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4322 assert_eq!(
4323 view.selection_ranges(cx),
4324 &[
4325 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4326 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4327 ]
4328 );
4329 });
4330
4331 view.update(cx, |view, cx| {
4332 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4333 assert_eq!(
4334 view.selection_ranges(cx),
4335 &[
4336 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4337 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4338 ]
4339 );
4340 });
4341
4342 view.update(cx, |view, cx| {
4343 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4344 assert_eq!(
4345 view.selection_ranges(cx),
4346 &[
4347 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4348 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4349 ]
4350 );
4351 });
4352
4353 view.update(cx, |view, cx| {
4354 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4355 assert_eq!(
4356 view.selection_ranges(cx),
4357 &[
4358 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4359 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4360 ]
4361 );
4362 });
4363
4364 view.update(cx, |view, cx| {
4365 view.move_right(&MoveRight, cx);
4366 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4367 assert_eq!(
4368 view.selection_ranges(cx),
4369 &[
4370 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4371 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4372 ]
4373 );
4374 });
4375
4376 view.update(cx, |view, cx| {
4377 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4378 assert_eq!(
4379 view.selection_ranges(cx),
4380 &[
4381 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4382 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4383 ]
4384 );
4385 });
4386
4387 view.update(cx, |view, cx| {
4388 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4389 assert_eq!(
4390 view.selection_ranges(cx),
4391 &[
4392 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4393 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4394 ]
4395 );
4396 });
4397 }
4398
4399 #[gpui::test]
4400 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4401 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4402 let settings = EditorSettings::test(&cx);
4403 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4404
4405 view.update(cx, |view, cx| {
4406 view.set_wrap_width(Some(140.), cx);
4407 assert_eq!(
4408 view.display_text(cx),
4409 "use one::{\n two::three::\n four::five\n};"
4410 );
4411
4412 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4413 .unwrap();
4414
4415 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4416 assert_eq!(
4417 view.selection_ranges(cx),
4418 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4419 );
4420
4421 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4422 assert_eq!(
4423 view.selection_ranges(cx),
4424 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4425 );
4426
4427 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4428 assert_eq!(
4429 view.selection_ranges(cx),
4430 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4431 );
4432
4433 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4434 assert_eq!(
4435 view.selection_ranges(cx),
4436 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4437 );
4438
4439 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4440 assert_eq!(
4441 view.selection_ranges(cx),
4442 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4443 );
4444
4445 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4446 assert_eq!(
4447 view.selection_ranges(cx),
4448 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4449 );
4450 });
4451 }
4452
4453 #[gpui::test]
4454 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4455 let buffer = MultiBuffer::build_simple("one two three four", cx);
4456 let settings = EditorSettings::test(&cx);
4457 let (_, view) = cx.add_window(Default::default(), |cx| {
4458 build_editor(buffer.clone(), settings, cx)
4459 });
4460
4461 view.update(cx, |view, cx| {
4462 view.select_display_ranges(
4463 &[
4464 // an empty selection - the preceding word fragment is deleted
4465 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4466 // characters selected - they are deleted
4467 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4468 ],
4469 cx,
4470 )
4471 .unwrap();
4472 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4473 });
4474
4475 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4476
4477 view.update(cx, |view, cx| {
4478 view.select_display_ranges(
4479 &[
4480 // an empty selection - the following word fragment is deleted
4481 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4482 // characters selected - they are deleted
4483 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4484 ],
4485 cx,
4486 )
4487 .unwrap();
4488 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4489 });
4490
4491 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4492 }
4493
4494 #[gpui::test]
4495 fn test_newline(cx: &mut gpui::MutableAppContext) {
4496 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4497 let settings = EditorSettings::test(&cx);
4498 let (_, view) = cx.add_window(Default::default(), |cx| {
4499 build_editor(buffer.clone(), settings, cx)
4500 });
4501
4502 view.update(cx, |view, cx| {
4503 view.select_display_ranges(
4504 &[
4505 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4506 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4507 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4508 ],
4509 cx,
4510 )
4511 .unwrap();
4512
4513 view.newline(&Newline, cx);
4514 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4515 });
4516 }
4517
4518 #[gpui::test]
4519 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4520 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4521 let settings = EditorSettings::test(&cx);
4522 let (_, view) = cx.add_window(Default::default(), |cx| {
4523 build_editor(buffer.clone(), settings, cx)
4524 });
4525
4526 view.update(cx, |view, cx| {
4527 // two selections on the same line
4528 view.select_display_ranges(
4529 &[
4530 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4531 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4532 ],
4533 cx,
4534 )
4535 .unwrap();
4536
4537 // indent from mid-tabstop to full tabstop
4538 view.tab(&Tab, cx);
4539 assert_eq!(view.text(cx), " one two\nthree\n four");
4540 assert_eq!(
4541 view.selection_ranges(cx),
4542 &[
4543 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4544 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4545 ]
4546 );
4547
4548 // outdent from 1 tabstop to 0 tabstops
4549 view.outdent(&Outdent, cx);
4550 assert_eq!(view.text(cx), "one two\nthree\n four");
4551 assert_eq!(
4552 view.selection_ranges(cx),
4553 &[
4554 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4555 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4556 ]
4557 );
4558
4559 // select across line ending
4560 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4561 .unwrap();
4562
4563 // indent and outdent affect only the preceding line
4564 view.tab(&Tab, cx);
4565 assert_eq!(view.text(cx), "one two\n three\n four");
4566 assert_eq!(
4567 view.selection_ranges(cx),
4568 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4569 );
4570 view.outdent(&Outdent, cx);
4571 assert_eq!(view.text(cx), "one two\nthree\n four");
4572 assert_eq!(
4573 view.selection_ranges(cx),
4574 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4575 );
4576 });
4577 }
4578
4579 #[gpui::test]
4580 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4581 let buffer =
4582 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4583 let settings = EditorSettings::test(&cx);
4584 let (_, view) = cx.add_window(Default::default(), |cx| {
4585 build_editor(buffer.clone(), settings, cx)
4586 });
4587
4588 view.update(cx, |view, cx| {
4589 view.select_display_ranges(
4590 &[
4591 // an empty selection - the preceding character is deleted
4592 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4593 // one character selected - it is deleted
4594 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4595 // a line suffix selected - it is deleted
4596 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4597 ],
4598 cx,
4599 )
4600 .unwrap();
4601 view.backspace(&Backspace, cx);
4602 });
4603
4604 assert_eq!(
4605 buffer.read(cx).read(cx).text(),
4606 "oe two three\nfou five six\nseven ten\n"
4607 );
4608 }
4609
4610 #[gpui::test]
4611 fn test_delete(cx: &mut gpui::MutableAppContext) {
4612 let buffer =
4613 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4614 let settings = EditorSettings::test(&cx);
4615 let (_, view) = cx.add_window(Default::default(), |cx| {
4616 build_editor(buffer.clone(), settings, cx)
4617 });
4618
4619 view.update(cx, |view, cx| {
4620 view.select_display_ranges(
4621 &[
4622 // an empty selection - the following character is deleted
4623 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4624 // one character selected - it is deleted
4625 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4626 // a line suffix selected - it is deleted
4627 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4628 ],
4629 cx,
4630 )
4631 .unwrap();
4632 view.delete(&Delete, cx);
4633 });
4634
4635 assert_eq!(
4636 buffer.read(cx).read(cx).text(),
4637 "on two three\nfou five six\nseven ten\n"
4638 );
4639 }
4640
4641 #[gpui::test]
4642 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4643 let settings = EditorSettings::test(&cx);
4644 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4645 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4646 view.update(cx, |view, cx| {
4647 view.select_display_ranges(
4648 &[
4649 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4650 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4651 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4652 ],
4653 cx,
4654 )
4655 .unwrap();
4656 view.delete_line(&DeleteLine, cx);
4657 assert_eq!(view.display_text(cx), "ghi");
4658 assert_eq!(
4659 view.selection_ranges(cx),
4660 vec![
4661 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4662 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4663 ]
4664 );
4665 });
4666
4667 let settings = EditorSettings::test(&cx);
4668 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4669 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4670 view.update(cx, |view, cx| {
4671 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4672 .unwrap();
4673 view.delete_line(&DeleteLine, cx);
4674 assert_eq!(view.display_text(cx), "ghi\n");
4675 assert_eq!(
4676 view.selection_ranges(cx),
4677 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4678 );
4679 });
4680 }
4681
4682 #[gpui::test]
4683 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4684 let settings = EditorSettings::test(&cx);
4685 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4686 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4687 view.update(cx, |view, cx| {
4688 view.select_display_ranges(
4689 &[
4690 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4691 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4692 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4693 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4694 ],
4695 cx,
4696 )
4697 .unwrap();
4698 view.duplicate_line(&DuplicateLine, cx);
4699 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4700 assert_eq!(
4701 view.selection_ranges(cx),
4702 vec![
4703 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4704 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4705 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4706 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
4707 ]
4708 );
4709 });
4710
4711 let settings = EditorSettings::test(&cx);
4712 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4713 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4714 view.update(cx, |view, cx| {
4715 view.select_display_ranges(
4716 &[
4717 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
4718 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
4719 ],
4720 cx,
4721 )
4722 .unwrap();
4723 view.duplicate_line(&DuplicateLine, cx);
4724 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
4725 assert_eq!(
4726 view.selection_ranges(cx),
4727 vec![
4728 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
4729 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
4730 ]
4731 );
4732 });
4733 }
4734
4735 #[gpui::test]
4736 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
4737 let settings = EditorSettings::test(&cx);
4738 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
4739 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4740 view.update(cx, |view, cx| {
4741 view.fold_ranges(
4742 vec![
4743 Point::new(0, 2)..Point::new(1, 2),
4744 Point::new(2, 3)..Point::new(4, 1),
4745 Point::new(7, 0)..Point::new(8, 4),
4746 ],
4747 cx,
4748 );
4749 view.select_display_ranges(
4750 &[
4751 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4752 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4753 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4754 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
4755 ],
4756 cx,
4757 )
4758 .unwrap();
4759 assert_eq!(
4760 view.display_text(cx),
4761 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
4762 );
4763
4764 view.move_line_up(&MoveLineUp, cx);
4765 assert_eq!(
4766 view.display_text(cx),
4767 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
4768 );
4769 assert_eq!(
4770 view.selection_ranges(cx),
4771 vec![
4772 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4773 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4774 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4775 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4776 ]
4777 );
4778 });
4779
4780 view.update(cx, |view, cx| {
4781 view.move_line_down(&MoveLineDown, cx);
4782 assert_eq!(
4783 view.display_text(cx),
4784 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
4785 );
4786 assert_eq!(
4787 view.selection_ranges(cx),
4788 vec![
4789 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4790 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4791 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4792 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4793 ]
4794 );
4795 });
4796
4797 view.update(cx, |view, cx| {
4798 view.move_line_down(&MoveLineDown, cx);
4799 assert_eq!(
4800 view.display_text(cx),
4801 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
4802 );
4803 assert_eq!(
4804 view.selection_ranges(cx),
4805 vec![
4806 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4807 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
4808 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
4809 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
4810 ]
4811 );
4812 });
4813
4814 view.update(cx, |view, cx| {
4815 view.move_line_up(&MoveLineUp, cx);
4816 assert_eq!(
4817 view.display_text(cx),
4818 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
4819 );
4820 assert_eq!(
4821 view.selection_ranges(cx),
4822 vec![
4823 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4824 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4825 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
4826 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
4827 ]
4828 );
4829 });
4830 }
4831
4832 #[gpui::test]
4833 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
4834 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
4835 let settings = EditorSettings::test(&cx);
4836 let view = cx
4837 .add_window(Default::default(), |cx| {
4838 build_editor(buffer.clone(), settings, cx)
4839 })
4840 .1;
4841
4842 // Cut with three selections. Clipboard text is divided into three slices.
4843 view.update(cx, |view, cx| {
4844 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
4845 view.cut(&Cut, cx);
4846 assert_eq!(view.display_text(cx), "two four six ");
4847 });
4848
4849 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
4850 view.update(cx, |view, cx| {
4851 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
4852 view.paste(&Paste, cx);
4853 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
4854 assert_eq!(
4855 view.selection_ranges(cx),
4856 &[
4857 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4858 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
4859 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
4860 ]
4861 );
4862 });
4863
4864 // Paste again but with only two cursors. Since the number of cursors doesn't
4865 // match the number of slices in the clipboard, the entire clipboard text
4866 // is pasted at each cursor.
4867 view.update(cx, |view, cx| {
4868 view.select_ranges(vec![0..0, 31..31], None, cx);
4869 view.handle_input(&Input("( ".into()), cx);
4870 view.paste(&Paste, cx);
4871 view.handle_input(&Input(") ".into()), cx);
4872 assert_eq!(
4873 view.display_text(cx),
4874 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4875 );
4876 });
4877
4878 view.update(cx, |view, cx| {
4879 view.select_ranges(vec![0..0], None, cx);
4880 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
4881 assert_eq!(
4882 view.display_text(cx),
4883 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4884 );
4885 });
4886
4887 // Cut with three selections, one of which is full-line.
4888 view.update(cx, |view, cx| {
4889 view.select_display_ranges(
4890 &[
4891 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
4892 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4893 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
4894 ],
4895 cx,
4896 )
4897 .unwrap();
4898 view.cut(&Cut, cx);
4899 assert_eq!(
4900 view.display_text(cx),
4901 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
4902 );
4903 });
4904
4905 // Paste with three selections, noticing how the copied selection that was full-line
4906 // gets inserted before the second cursor.
4907 view.update(cx, |view, cx| {
4908 view.select_display_ranges(
4909 &[
4910 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4911 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4912 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
4913 ],
4914 cx,
4915 )
4916 .unwrap();
4917 view.paste(&Paste, cx);
4918 assert_eq!(
4919 view.display_text(cx),
4920 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4921 );
4922 assert_eq!(
4923 view.selection_ranges(cx),
4924 &[
4925 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4926 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4927 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
4928 ]
4929 );
4930 });
4931
4932 // Copy with a single cursor only, which writes the whole line into the clipboard.
4933 view.update(cx, |view, cx| {
4934 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
4935 .unwrap();
4936 view.copy(&Copy, cx);
4937 });
4938
4939 // Paste with three selections, noticing how the copied full-line selection is inserted
4940 // before the empty selections but replaces the selection that is non-empty.
4941 view.update(cx, |view, cx| {
4942 view.select_display_ranges(
4943 &[
4944 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4945 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
4946 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
4947 ],
4948 cx,
4949 )
4950 .unwrap();
4951 view.paste(&Paste, cx);
4952 assert_eq!(
4953 view.display_text(cx),
4954 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
4955 );
4956 assert_eq!(
4957 view.selection_ranges(cx),
4958 &[
4959 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
4960 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4961 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
4962 ]
4963 );
4964 });
4965 }
4966
4967 #[gpui::test]
4968 fn test_select_all(cx: &mut gpui::MutableAppContext) {
4969 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
4970 let settings = EditorSettings::test(&cx);
4971 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4972 view.update(cx, |view, cx| {
4973 view.select_all(&SelectAll, cx);
4974 assert_eq!(
4975 view.selection_ranges(cx),
4976 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
4977 );
4978 });
4979 }
4980
4981 #[gpui::test]
4982 fn test_select_line(cx: &mut gpui::MutableAppContext) {
4983 let settings = EditorSettings::test(&cx);
4984 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
4985 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4986 view.update(cx, |view, cx| {
4987 view.select_display_ranges(
4988 &[
4989 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4990 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4991 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4992 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
4993 ],
4994 cx,
4995 )
4996 .unwrap();
4997 view.select_line(&SelectLine, cx);
4998 assert_eq!(
4999 view.selection_ranges(cx),
5000 vec![
5001 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5002 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5003 ]
5004 );
5005 });
5006
5007 view.update(cx, |view, cx| {
5008 view.select_line(&SelectLine, cx);
5009 assert_eq!(
5010 view.selection_ranges(cx),
5011 vec![
5012 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5013 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5014 ]
5015 );
5016 });
5017
5018 view.update(cx, |view, cx| {
5019 view.select_line(&SelectLine, cx);
5020 assert_eq!(
5021 view.selection_ranges(cx),
5022 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5023 );
5024 });
5025 }
5026
5027 #[gpui::test]
5028 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5029 let settings = EditorSettings::test(&cx);
5030 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5031 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5032 view.update(cx, |view, cx| {
5033 view.fold_ranges(
5034 vec![
5035 Point::new(0, 2)..Point::new(1, 2),
5036 Point::new(2, 3)..Point::new(4, 1),
5037 Point::new(7, 0)..Point::new(8, 4),
5038 ],
5039 cx,
5040 );
5041 view.select_display_ranges(
5042 &[
5043 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5044 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5045 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5046 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5047 ],
5048 cx,
5049 )
5050 .unwrap();
5051 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5052 });
5053
5054 view.update(cx, |view, cx| {
5055 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5056 assert_eq!(
5057 view.display_text(cx),
5058 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5059 );
5060 assert_eq!(
5061 view.selection_ranges(cx),
5062 [
5063 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5064 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5065 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5066 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5067 ]
5068 );
5069 });
5070
5071 view.update(cx, |view, cx| {
5072 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5073 .unwrap();
5074 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5075 assert_eq!(
5076 view.display_text(cx),
5077 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5078 );
5079 assert_eq!(
5080 view.selection_ranges(cx),
5081 [
5082 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5083 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5084 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5085 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5086 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5087 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5088 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5089 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5090 ]
5091 );
5092 });
5093 }
5094
5095 #[gpui::test]
5096 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5097 let settings = EditorSettings::test(&cx);
5098 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5099 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5100
5101 view.update(cx, |view, cx| {
5102 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5103 .unwrap();
5104 });
5105 view.update(cx, |view, cx| {
5106 view.add_selection_above(&AddSelectionAbove, cx);
5107 assert_eq!(
5108 view.selection_ranges(cx),
5109 vec![
5110 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5111 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5112 ]
5113 );
5114 });
5115
5116 view.update(cx, |view, cx| {
5117 view.add_selection_above(&AddSelectionAbove, cx);
5118 assert_eq!(
5119 view.selection_ranges(cx),
5120 vec![
5121 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5122 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5123 ]
5124 );
5125 });
5126
5127 view.update(cx, |view, cx| {
5128 view.add_selection_below(&AddSelectionBelow, cx);
5129 assert_eq!(
5130 view.selection_ranges(cx),
5131 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5132 );
5133 });
5134
5135 view.update(cx, |view, cx| {
5136 view.add_selection_below(&AddSelectionBelow, cx);
5137 assert_eq!(
5138 view.selection_ranges(cx),
5139 vec![
5140 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5141 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5142 ]
5143 );
5144 });
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, 3)..DisplayPoint::new(1, 3),
5152 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5153 ]
5154 );
5155 });
5156
5157 view.update(cx, |view, cx| {
5158 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5159 .unwrap();
5160 });
5161 view.update(cx, |view, cx| {
5162 view.add_selection_below(&AddSelectionBelow, cx);
5163 assert_eq!(
5164 view.selection_ranges(cx),
5165 vec![
5166 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5167 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5168 ]
5169 );
5170 });
5171
5172 view.update(cx, |view, cx| {
5173 view.add_selection_below(&AddSelectionBelow, cx);
5174 assert_eq!(
5175 view.selection_ranges(cx),
5176 vec![
5177 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5178 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5179 ]
5180 );
5181 });
5182
5183 view.update(cx, |view, cx| {
5184 view.add_selection_above(&AddSelectionAbove, cx);
5185 assert_eq!(
5186 view.selection_ranges(cx),
5187 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5188 );
5189 });
5190
5191 view.update(cx, |view, cx| {
5192 view.add_selection_above(&AddSelectionAbove, cx);
5193 assert_eq!(
5194 view.selection_ranges(cx),
5195 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5196 );
5197 });
5198
5199 view.update(cx, |view, cx| {
5200 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5201 .unwrap();
5202 view.add_selection_below(&AddSelectionBelow, cx);
5203 assert_eq!(
5204 view.selection_ranges(cx),
5205 vec![
5206 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5207 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5208 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5209 ]
5210 );
5211 });
5212
5213 view.update(cx, |view, cx| {
5214 view.add_selection_below(&AddSelectionBelow, cx);
5215 assert_eq!(
5216 view.selection_ranges(cx),
5217 vec![
5218 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5219 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5220 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5221 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5222 ]
5223 );
5224 });
5225
5226 view.update(cx, |view, cx| {
5227 view.add_selection_above(&AddSelectionAbove, cx);
5228 assert_eq!(
5229 view.selection_ranges(cx),
5230 vec![
5231 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5232 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5233 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5234 ]
5235 );
5236 });
5237
5238 view.update(cx, |view, cx| {
5239 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5240 .unwrap();
5241 });
5242 view.update(cx, |view, cx| {
5243 view.add_selection_above(&AddSelectionAbove, cx);
5244 assert_eq!(
5245 view.selection_ranges(cx),
5246 vec![
5247 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5248 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5249 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5250 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5251 ]
5252 );
5253 });
5254
5255 view.update(cx, |view, cx| {
5256 view.add_selection_below(&AddSelectionBelow, cx);
5257 assert_eq!(
5258 view.selection_ranges(cx),
5259 vec![
5260 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5261 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5262 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5263 ]
5264 );
5265 });
5266 }
5267
5268 #[gpui::test]
5269 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5270 let settings = cx.read(EditorSettings::test);
5271 let language = Some(Arc::new(Language::new(
5272 LanguageConfig::default(),
5273 Some(tree_sitter_rust::language()),
5274 )));
5275
5276 let text = r#"
5277 use mod1::mod2::{mod3, mod4};
5278
5279 fn fn_1(param1: bool, param2: &str) {
5280 let var1 = "text";
5281 }
5282 "#
5283 .unindent();
5284
5285 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5286 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5287 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5288 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5289 .await;
5290
5291 view.update(&mut cx, |view, cx| {
5292 view.select_display_ranges(
5293 &[
5294 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5295 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5296 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5297 ],
5298 cx,
5299 )
5300 .unwrap();
5301 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5302 });
5303 assert_eq!(
5304 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5305 &[
5306 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5307 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5308 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5309 ]
5310 );
5311
5312 view.update(&mut cx, |view, cx| {
5313 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5314 });
5315 assert_eq!(
5316 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5317 &[
5318 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5319 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5320 ]
5321 );
5322
5323 view.update(&mut cx, |view, cx| {
5324 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5325 });
5326 assert_eq!(
5327 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5328 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5329 );
5330
5331 // Trying to expand the selected syntax node one more time has no effect.
5332 view.update(&mut cx, |view, cx| {
5333 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5334 });
5335 assert_eq!(
5336 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5337 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5338 );
5339
5340 view.update(&mut cx, |view, cx| {
5341 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5342 });
5343 assert_eq!(
5344 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5345 &[
5346 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5347 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5348 ]
5349 );
5350
5351 view.update(&mut cx, |view, cx| {
5352 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5353 });
5354 assert_eq!(
5355 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5356 &[
5357 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5358 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5359 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5360 ]
5361 );
5362
5363 view.update(&mut cx, |view, cx| {
5364 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5365 });
5366 assert_eq!(
5367 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5368 &[
5369 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5370 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5371 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5372 ]
5373 );
5374
5375 // Trying to shrink the selected syntax node one more time has no effect.
5376 view.update(&mut cx, |view, cx| {
5377 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5378 });
5379 assert_eq!(
5380 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5381 &[
5382 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5383 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5384 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5385 ]
5386 );
5387
5388 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5389 // a fold.
5390 view.update(&mut cx, |view, cx| {
5391 view.fold_ranges(
5392 vec![
5393 Point::new(0, 21)..Point::new(0, 24),
5394 Point::new(3, 20)..Point::new(3, 22),
5395 ],
5396 cx,
5397 );
5398 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5399 });
5400 assert_eq!(
5401 view.update(&mut cx, |view, cx| view.selection_ranges(cx)),
5402 &[
5403 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5404 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5405 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5406 ]
5407 );
5408 }
5409
5410 #[gpui::test]
5411 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5412 let settings = cx.read(EditorSettings::test);
5413 let language = Some(Arc::new(Language::new(
5414 LanguageConfig {
5415 brackets: vec![
5416 BracketPair {
5417 start: "{".to_string(),
5418 end: "}".to_string(),
5419 close: true,
5420 newline: true,
5421 },
5422 BracketPair {
5423 start: "/*".to_string(),
5424 end: " */".to_string(),
5425 close: true,
5426 newline: true,
5427 },
5428 ],
5429 ..Default::default()
5430 },
5431 Some(tree_sitter_rust::language()),
5432 )));
5433
5434 let text = r#"
5435 a
5436
5437 /
5438
5439 "#
5440 .unindent();
5441
5442 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5443 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5444 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5445 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5446 .await;
5447
5448 view.update(&mut cx, |view, cx| {
5449 view.select_display_ranges(
5450 &[
5451 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5452 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5453 ],
5454 cx,
5455 )
5456 .unwrap();
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.move_right(&MoveRight, cx);
5472 view.handle_input(&Input("}".to_string()), cx);
5473 view.handle_input(&Input("}".to_string()), cx);
5474 view.handle_input(&Input("}".to_string()), cx);
5475 assert_eq!(
5476 view.text(cx),
5477 "
5478 {{{}}}}
5479 {{{}}}}
5480 /
5481
5482 "
5483 .unindent()
5484 );
5485
5486 view.undo(&Undo, cx);
5487 view.handle_input(&Input("/".to_string()), cx);
5488 view.handle_input(&Input("*".to_string()), cx);
5489 assert_eq!(
5490 view.text(cx),
5491 "
5492 /* */
5493 /* */
5494 /
5495
5496 "
5497 .unindent()
5498 );
5499
5500 view.undo(&Undo, cx);
5501 view.select_display_ranges(
5502 &[
5503 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5504 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5505 ],
5506 cx,
5507 )
5508 .unwrap();
5509 view.handle_input(&Input("*".to_string()), cx);
5510 assert_eq!(
5511 view.text(cx),
5512 "
5513 a
5514
5515 /*
5516 *
5517 "
5518 .unindent()
5519 );
5520 });
5521 }
5522
5523 #[gpui::test]
5524 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5525 let settings = cx.read(EditorSettings::test);
5526 let language = Some(Arc::new(Language::new(
5527 LanguageConfig {
5528 line_comment: Some("// ".to_string()),
5529 ..Default::default()
5530 },
5531 Some(tree_sitter_rust::language()),
5532 )));
5533
5534 let text = "
5535 fn a() {
5536 //b();
5537 // c();
5538 // d();
5539 }
5540 "
5541 .unindent();
5542
5543 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5544 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5545 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5546
5547 view.update(&mut cx, |editor, cx| {
5548 // If multiple selections intersect a line, the line is only
5549 // toggled once.
5550 editor
5551 .select_display_ranges(
5552 &[
5553 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5554 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5555 ],
5556 cx,
5557 )
5558 .unwrap();
5559 editor.toggle_comments(&ToggleComments, cx);
5560 assert_eq!(
5561 editor.text(cx),
5562 "
5563 fn a() {
5564 b();
5565 c();
5566 d();
5567 }
5568 "
5569 .unindent()
5570 );
5571
5572 // The comment prefix is inserted at the same column for every line
5573 // in a selection.
5574 editor
5575 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5576 .unwrap();
5577 editor.toggle_comments(&ToggleComments, cx);
5578 assert_eq!(
5579 editor.text(cx),
5580 "
5581 fn a() {
5582 // b();
5583 // c();
5584 // d();
5585 }
5586 "
5587 .unindent()
5588 );
5589
5590 // If a selection ends at the beginning of a line, that line is not toggled.
5591 editor
5592 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5593 .unwrap();
5594 editor.toggle_comments(&ToggleComments, cx);
5595 assert_eq!(
5596 editor.text(cx),
5597 "
5598 fn a() {
5599 // b();
5600 c();
5601 // d();
5602 }
5603 "
5604 .unindent()
5605 );
5606 });
5607 }
5608
5609 #[gpui::test]
5610 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
5611 let settings = cx.read(EditorSettings::test);
5612 let language = Some(Arc::new(Language::new(
5613 LanguageConfig {
5614 brackets: vec![
5615 BracketPair {
5616 start: "{".to_string(),
5617 end: "}".to_string(),
5618 close: true,
5619 newline: true,
5620 },
5621 BracketPair {
5622 start: "/* ".to_string(),
5623 end: " */".to_string(),
5624 close: true,
5625 newline: true,
5626 },
5627 ],
5628 ..Default::default()
5629 },
5630 Some(tree_sitter_rust::language()),
5631 )));
5632
5633 let text = concat!(
5634 "{ }\n", // Suppress rustfmt
5635 " x\n", //
5636 " /* */\n", //
5637 "x\n", //
5638 "{{} }\n", //
5639 );
5640
5641 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5642 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5643 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5644 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5645 .await;
5646
5647 view.update(&mut cx, |view, cx| {
5648 view.select_display_ranges(
5649 &[
5650 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5651 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5652 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5653 ],
5654 cx,
5655 )
5656 .unwrap();
5657 view.newline(&Newline, cx);
5658
5659 assert_eq!(
5660 view.buffer().read(cx).read(cx).text(),
5661 concat!(
5662 "{ \n", // Suppress rustfmt
5663 "\n", //
5664 "}\n", //
5665 " x\n", //
5666 " /* \n", //
5667 " \n", //
5668 " */\n", //
5669 "x\n", //
5670 "{{} \n", //
5671 "}\n", //
5672 )
5673 );
5674 });
5675 }
5676
5677 impl Editor {
5678 fn selection_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
5679 let snapshot = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5680 self.selections
5681 .iter()
5682 .map(|s| {
5683 let mut range =
5684 s.start.to_display_point(&snapshot)..s.end.to_display_point(&snapshot);
5685 if s.reversed {
5686 mem::swap(&mut range.start, &mut range.end);
5687 }
5688 range
5689 })
5690 .collect()
5691 }
5692 }
5693
5694 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
5695 let point = DisplayPoint::new(row as u32, column as u32);
5696 point..point
5697 }
5698
5699 fn build_editor(
5700 buffer: ModelHandle<MultiBuffer>,
5701 settings: EditorSettings,
5702 cx: &mut ViewContext<Editor>,
5703 ) -> Editor {
5704 Editor::for_buffer(buffer, move |_| settings.clone(), cx)
5705 }
5706}
5707
5708trait RangeExt<T> {
5709 fn sorted(&self) -> Range<T>;
5710 fn to_inclusive(&self) -> RangeInclusive<T>;
5711}
5712
5713impl<T: Ord + Clone> RangeExt<T> for Range<T> {
5714 fn sorted(&self) -> Self {
5715 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
5716 }
5717
5718 fn to_inclusive(&self) -> RangeInclusive<T> {
5719 self.start.clone()..=self.end.clone()
5720 }
5721}