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