1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use clock::ReplicaId;
12use collections::{HashMap, HashSet};
13pub use display_map::DisplayPoint;
14use display_map::*;
15pub use element::*;
16use gpui::{
17 action,
18 elements::*,
19 fonts::TextStyle,
20 geometry::vector::{vec2f, Vector2F},
21 keymap::Binding,
22 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
23 MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle,
24};
25use items::BufferItemHandle;
26use itertools::Itertools as _;
27use language::{
28 BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal,
29 TransactionId,
30};
31pub use multi_buffer::{Anchor, ExcerptId, ExcerptProperties, MultiBuffer};
32use multi_buffer::{AnchorRangeExt, MultiBufferChunks, MultiBufferSnapshot, ToOffset, ToPoint};
33use postage::watch;
34use serde::{Deserialize, Serialize};
35use smallvec::SmallVec;
36use smol::Timer;
37use std::{
38 cmp,
39 iter::{self, FromIterator},
40 mem,
41 ops::{Deref, Range, RangeInclusive, Sub},
42 sync::Arc,
43 time::{Duration, Instant},
44};
45use sum_tree::Bias;
46use text::rope::TextDimension;
47use theme::{DiagnosticStyle, EditorStyle};
48use util::post_inc;
49use workspace::{EntryOpener, Workspace};
50
51const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
52const MAX_LINE_LEN: usize = 1024;
53
54action!(Cancel);
55action!(Backspace);
56action!(Delete);
57action!(Input, String);
58action!(Newline);
59action!(Tab);
60action!(Outdent);
61action!(DeleteLine);
62action!(DeleteToPreviousWordBoundary);
63action!(DeleteToNextWordBoundary);
64action!(DeleteToBeginningOfLine);
65action!(DeleteToEndOfLine);
66action!(CutToEndOfLine);
67action!(DuplicateLine);
68action!(MoveLineUp);
69action!(MoveLineDown);
70action!(Cut);
71action!(Copy);
72action!(Paste);
73action!(Undo);
74action!(Redo);
75action!(MoveUp);
76action!(MoveDown);
77action!(MoveLeft);
78action!(MoveRight);
79action!(MoveToPreviousWordBoundary);
80action!(MoveToNextWordBoundary);
81action!(MoveToBeginningOfLine);
82action!(MoveToEndOfLine);
83action!(MoveToBeginning);
84action!(MoveToEnd);
85action!(SelectUp);
86action!(SelectDown);
87action!(SelectLeft);
88action!(SelectRight);
89action!(SelectToPreviousWordBoundary);
90action!(SelectToNextWordBoundary);
91action!(SelectToBeginningOfLine, bool);
92action!(SelectToEndOfLine);
93action!(SelectToBeginning);
94action!(SelectToEnd);
95action!(SelectAll);
96action!(SelectLine);
97action!(SplitSelectionIntoLines);
98action!(AddSelectionAbove);
99action!(AddSelectionBelow);
100action!(SelectNext, bool);
101action!(ToggleComments);
102action!(SelectLargerSyntaxNode);
103action!(SelectSmallerSyntaxNode);
104action!(MoveToEnclosingBracket);
105action!(ShowNextDiagnostic);
106action!(PageUp);
107action!(PageDown);
108action!(Fold);
109action!(Unfold);
110action!(FoldSelectedRanges);
111action!(Scroll, Vector2F);
112action!(Select, SelectPhase);
113
114pub fn init(cx: &mut MutableAppContext, entry_openers: &mut Vec<Box<dyn EntryOpener>>) {
115 entry_openers.push(Box::new(items::BufferOpener));
116 cx.add_bindings(vec![
117 Binding::new("escape", Cancel, Some("Editor")),
118 Binding::new("backspace", Backspace, Some("Editor")),
119 Binding::new("ctrl-h", Backspace, Some("Editor")),
120 Binding::new("delete", Delete, Some("Editor")),
121 Binding::new("ctrl-d", Delete, Some("Editor")),
122 Binding::new("enter", Newline, Some("Editor && mode == full")),
123 Binding::new(
124 "alt-enter",
125 Input("\n".into()),
126 Some("Editor && mode == auto_height"),
127 ),
128 Binding::new("tab", Tab, Some("Editor")),
129 Binding::new("shift-tab", Outdent, Some("Editor")),
130 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
131 Binding::new(
132 "alt-backspace",
133 DeleteToPreviousWordBoundary,
134 Some("Editor"),
135 ),
136 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
137 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
138 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
139 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
140 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
141 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
142 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
143 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
144 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
145 Binding::new("cmd-x", Cut, Some("Editor")),
146 Binding::new("cmd-c", Copy, Some("Editor")),
147 Binding::new("cmd-v", Paste, Some("Editor")),
148 Binding::new("cmd-z", Undo, Some("Editor")),
149 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
150 Binding::new("up", MoveUp, Some("Editor")),
151 Binding::new("down", MoveDown, Some("Editor")),
152 Binding::new("left", MoveLeft, Some("Editor")),
153 Binding::new("right", MoveRight, Some("Editor")),
154 Binding::new("ctrl-p", MoveUp, Some("Editor")),
155 Binding::new("ctrl-n", MoveDown, Some("Editor")),
156 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
157 Binding::new("ctrl-f", MoveRight, Some("Editor")),
158 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
159 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
160 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
161 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
162 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
163 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
164 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
165 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
166 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
167 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
168 Binding::new("shift-up", SelectUp, Some("Editor")),
169 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
170 Binding::new("shift-down", SelectDown, Some("Editor")),
171 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
172 Binding::new("shift-left", SelectLeft, Some("Editor")),
173 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
174 Binding::new("shift-right", SelectRight, Some("Editor")),
175 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
176 Binding::new(
177 "alt-shift-left",
178 SelectToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
184 Binding::new(
185 "cmd-shift-left",
186 SelectToBeginningOfLine(true),
187 Some("Editor"),
188 ),
189 Binding::new(
190 "ctrl-shift-A",
191 SelectToBeginningOfLine(true),
192 Some("Editor"),
193 ),
194 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
195 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
196 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
197 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
198 Binding::new("cmd-a", SelectAll, Some("Editor")),
199 Binding::new("cmd-l", SelectLine, Some("Editor")),
200 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
201 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
202 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
203 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
204 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
205 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
206 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
207 Binding::new("cmd-/", ToggleComments, Some("Editor")),
208 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
209 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
210 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
211 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
212 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
213 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
214 Binding::new("pageup", PageUp, Some("Editor")),
215 Binding::new("pagedown", PageDown, Some("Editor")),
216 Binding::new("alt-cmd-[", Fold, Some("Editor")),
217 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
218 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
219 ]);
220
221 cx.add_action(Editor::open_new);
222 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
223 cx.add_action(Editor::select);
224 cx.add_action(Editor::cancel);
225 cx.add_action(Editor::handle_input);
226 cx.add_action(Editor::newline);
227 cx.add_action(Editor::backspace);
228 cx.add_action(Editor::delete);
229 cx.add_action(Editor::tab);
230 cx.add_action(Editor::outdent);
231 cx.add_action(Editor::delete_line);
232 cx.add_action(Editor::delete_to_previous_word_boundary);
233 cx.add_action(Editor::delete_to_next_word_boundary);
234 cx.add_action(Editor::delete_to_beginning_of_line);
235 cx.add_action(Editor::delete_to_end_of_line);
236 cx.add_action(Editor::cut_to_end_of_line);
237 cx.add_action(Editor::duplicate_line);
238 cx.add_action(Editor::move_line_up);
239 cx.add_action(Editor::move_line_down);
240 cx.add_action(Editor::cut);
241 cx.add_action(Editor::copy);
242 cx.add_action(Editor::paste);
243 cx.add_action(Editor::undo);
244 cx.add_action(Editor::redo);
245 cx.add_action(Editor::move_up);
246 cx.add_action(Editor::move_down);
247 cx.add_action(Editor::move_left);
248 cx.add_action(Editor::move_right);
249 cx.add_action(Editor::move_to_previous_word_boundary);
250 cx.add_action(Editor::move_to_next_word_boundary);
251 cx.add_action(Editor::move_to_beginning_of_line);
252 cx.add_action(Editor::move_to_end_of_line);
253 cx.add_action(Editor::move_to_beginning);
254 cx.add_action(Editor::move_to_end);
255 cx.add_action(Editor::select_up);
256 cx.add_action(Editor::select_down);
257 cx.add_action(Editor::select_left);
258 cx.add_action(Editor::select_right);
259 cx.add_action(Editor::select_to_previous_word_boundary);
260 cx.add_action(Editor::select_to_next_word_boundary);
261 cx.add_action(Editor::select_to_beginning_of_line);
262 cx.add_action(Editor::select_to_end_of_line);
263 cx.add_action(Editor::select_to_beginning);
264 cx.add_action(Editor::select_to_end);
265 cx.add_action(Editor::select_all);
266 cx.add_action(Editor::select_line);
267 cx.add_action(Editor::split_selection_into_lines);
268 cx.add_action(Editor::add_selection_above);
269 cx.add_action(Editor::add_selection_below);
270 cx.add_action(Editor::select_next);
271 cx.add_action(Editor::toggle_comments);
272 cx.add_action(Editor::select_larger_syntax_node);
273 cx.add_action(Editor::select_smaller_syntax_node);
274 cx.add_action(Editor::move_to_enclosing_bracket);
275 cx.add_action(Editor::show_next_diagnostic);
276 cx.add_action(Editor::page_up);
277 cx.add_action(Editor::page_down);
278 cx.add_action(Editor::fold);
279 cx.add_action(Editor::unfold);
280 cx.add_action(Editor::fold_selected_ranges);
281}
282
283trait SelectionExt {
284 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
285 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
286 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
287 fn spanned_rows(
288 &self,
289 include_end_if_at_line_start: bool,
290 map: &DisplaySnapshot,
291 ) -> SpannedRows;
292}
293
294struct SpannedRows {
295 buffer_rows: Range<u32>,
296 display_rows: Range<u32>,
297}
298
299#[derive(Clone, Debug)]
300pub enum SelectPhase {
301 Begin {
302 position: DisplayPoint,
303 add: bool,
304 click_count: usize,
305 },
306 BeginColumnar {
307 position: DisplayPoint,
308 overshoot: u32,
309 },
310 Extend {
311 position: DisplayPoint,
312 click_count: usize,
313 },
314 Update {
315 position: DisplayPoint,
316 overshoot: u32,
317 scroll_position: Vector2F,
318 },
319 End,
320}
321
322#[derive(Clone, Debug)]
323enum SelectMode {
324 Character,
325 Word(Range<Anchor>),
326 Line(Range<Anchor>),
327 All,
328}
329
330#[derive(PartialEq, Eq)]
331pub enum Autoscroll {
332 Fit,
333 Center,
334 Newest,
335}
336
337#[derive(Copy, Clone, PartialEq, Eq)]
338pub enum EditorMode {
339 SingleLine,
340 AutoHeight { max_lines: usize },
341 Full,
342}
343
344#[derive(Clone)]
345pub struct EditorSettings {
346 pub tab_size: usize,
347 pub soft_wrap: SoftWrap,
348 pub style: EditorStyle,
349}
350
351#[derive(Clone)]
352pub enum SoftWrap {
353 None,
354 EditorWidth,
355 Column(u32),
356}
357
358pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
359
360pub struct Editor {
361 handle: WeakViewHandle<Self>,
362 buffer: ModelHandle<MultiBuffer>,
363 display_map: ModelHandle<DisplayMap>,
364 next_selection_id: usize,
365 selections: Arc<[Selection<Anchor>]>,
366 pending_selection: Option<PendingSelection>,
367 columnar_selection_tail: Option<Anchor>,
368 add_selections_state: Option<AddSelectionsState>,
369 select_next_state: Option<SelectNextState>,
370 selection_history:
371 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
372 autoclose_stack: Vec<BracketPairState>,
373 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
374 active_diagnostics: Option<ActiveDiagnosticGroup>,
375 scroll_position: Vector2F,
376 scroll_top_anchor: Anchor,
377 autoscroll_request: Option<Autoscroll>,
378 build_settings: BuildSettings,
379 focused: bool,
380 show_local_cursors: bool,
381 blink_epoch: usize,
382 blinking_paused: bool,
383 mode: EditorMode,
384 placeholder_text: Option<Arc<str>>,
385 highlighted_row: Option<u32>,
386}
387
388pub struct EditorSnapshot {
389 pub mode: EditorMode,
390 pub display_snapshot: DisplaySnapshot,
391 pub placeholder_text: Option<Arc<str>>,
392 is_focused: bool,
393 scroll_position: Vector2F,
394 scroll_top_anchor: Anchor,
395}
396
397struct PendingSelection {
398 selection: Selection<Anchor>,
399 mode: SelectMode,
400}
401
402struct AddSelectionsState {
403 above: bool,
404 stack: Vec<usize>,
405}
406
407struct SelectNextState {
408 query: AhoCorasick,
409 wordwise: bool,
410 done: bool,
411}
412
413#[derive(Debug)]
414struct BracketPairState {
415 ranges: Vec<Range<Anchor>>,
416 pair: BracketPair,
417}
418
419#[derive(Debug)]
420struct ActiveDiagnosticGroup {
421 primary_range: Range<Anchor>,
422 primary_message: String,
423 blocks: HashMap<BlockId, Diagnostic>,
424 is_valid: bool,
425}
426
427#[derive(Serialize, Deserialize)]
428struct ClipboardSelection {
429 len: usize,
430 is_entire_line: bool,
431}
432
433impl Editor {
434 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
435 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
436 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
437 let mut view = Self::for_buffer(buffer, build_settings, cx);
438 view.mode = EditorMode::SingleLine;
439 view
440 }
441
442 pub fn auto_height(
443 max_lines: usize,
444 build_settings: BuildSettings,
445 cx: &mut ViewContext<Self>,
446 ) -> Self {
447 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
448 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
449 let mut view = Self::for_buffer(buffer, build_settings, cx);
450 view.mode = EditorMode::AutoHeight { max_lines };
451 view
452 }
453
454 pub fn for_buffer(
455 buffer: ModelHandle<MultiBuffer>,
456 build_settings: BuildSettings,
457 cx: &mut ViewContext<Self>,
458 ) -> Self {
459 Self::new(buffer, build_settings, cx)
460 }
461
462 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
463 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
464 clone.scroll_position = self.scroll_position;
465 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
466 clone
467 }
468
469 pub fn new(
470 buffer: ModelHandle<MultiBuffer>,
471 build_settings: BuildSettings,
472 cx: &mut ViewContext<Self>,
473 ) -> Self {
474 let settings = build_settings(cx);
475 let display_map = cx.add_model(|cx| {
476 DisplayMap::new(
477 buffer.clone(),
478 settings.tab_size,
479 settings.style.text.font_id,
480 settings.style.text.font_size,
481 None,
482 cx,
483 )
484 });
485 cx.observe(&buffer, Self::on_buffer_changed).detach();
486 cx.subscribe(&buffer, Self::on_buffer_event).detach();
487 cx.observe(&display_map, Self::on_display_map_changed)
488 .detach();
489
490 let mut this = Self {
491 handle: cx.weak_handle(),
492 buffer,
493 display_map,
494 selections: Arc::from([]),
495 pending_selection: None,
496 columnar_selection_tail: None,
497 next_selection_id: 0,
498 add_selections_state: None,
499 select_next_state: None,
500 selection_history: Default::default(),
501 autoclose_stack: Default::default(),
502 select_larger_syntax_node_stack: Vec::new(),
503 active_diagnostics: None,
504 build_settings,
505 scroll_position: Vector2F::zero(),
506 scroll_top_anchor: Anchor::min(),
507 autoscroll_request: None,
508 focused: false,
509 show_local_cursors: false,
510 blink_epoch: 0,
511 blinking_paused: false,
512 mode: EditorMode::Full,
513 placeholder_text: None,
514 highlighted_row: None,
515 };
516 let selection = Selection {
517 id: post_inc(&mut this.next_selection_id),
518 start: 0,
519 end: 0,
520 reversed: false,
521 goal: SelectionGoal::None,
522 };
523 this.update_selections(vec![selection], None, cx);
524 this
525 }
526
527 pub fn open_new(
528 workspace: &mut Workspace,
529 _: &workspace::OpenNew,
530 cx: &mut ViewContext<Workspace>,
531 ) {
532 let buffer = cx.add_model(|cx| {
533 Buffer::new(0, "", cx).with_language(Some(language::PLAIN_TEXT.clone()), None, cx)
534 });
535 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
536 workspace.add_item(BufferItemHandle(buffer), cx);
537 }
538
539 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
540 self.buffer.read(cx).replica_id()
541 }
542
543 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
544 &self.buffer
545 }
546
547 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
548 EditorSnapshot {
549 mode: self.mode,
550 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
551 scroll_position: self.scroll_position,
552 scroll_top_anchor: self.scroll_top_anchor.clone(),
553 placeholder_text: self.placeholder_text.clone(),
554 is_focused: self
555 .handle
556 .upgrade(cx)
557 .map_or(false, |handle| handle.is_focused(cx)),
558 }
559 }
560
561 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
562 self.buffer.read(cx).language(cx)
563 }
564
565 pub fn set_placeholder_text(
566 &mut self,
567 placeholder_text: impl Into<Arc<str>>,
568 cx: &mut ViewContext<Self>,
569 ) {
570 self.placeholder_text = Some(placeholder_text.into());
571 cx.notify();
572 }
573
574 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
575 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
576 let scroll_top_buffer_offset =
577 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
578 self.scroll_top_anchor = map
579 .buffer_snapshot
580 .anchor_at(scroll_top_buffer_offset, Bias::Right);
581 self.scroll_position = vec2f(
582 scroll_position.x(),
583 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
584 );
585
586 cx.notify();
587 }
588
589 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
590 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
591 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
592 }
593
594 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
595 if max < self.scroll_position.x() {
596 self.scroll_position.set_x(max);
597 true
598 } else {
599 false
600 }
601 }
602
603 pub fn autoscroll_vertically(
604 &mut self,
605 viewport_height: f32,
606 line_height: f32,
607 cx: &mut ViewContext<Self>,
608 ) -> bool {
609 let visible_lines = viewport_height / line_height;
610 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
611 let mut scroll_position =
612 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
613 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
614 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
615 } else {
616 display_map.max_point().row().saturating_sub(1) as f32
617 };
618 if scroll_position.y() > max_scroll_top {
619 scroll_position.set_y(max_scroll_top);
620 self.set_scroll_position(scroll_position, cx);
621 }
622
623 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
624 autoscroll
625 } else {
626 return false;
627 };
628
629 let first_cursor_top;
630 let last_cursor_bottom;
631 if autoscroll == Autoscroll::Newest {
632 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
633 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
634 last_cursor_bottom = first_cursor_top + 1.;
635 } else {
636 let selections = self.local_selections::<Point>(cx);
637 first_cursor_top = selections
638 .first()
639 .unwrap()
640 .head()
641 .to_display_point(&display_map)
642 .row() as f32;
643 last_cursor_bottom = selections
644 .last()
645 .unwrap()
646 .head()
647 .to_display_point(&display_map)
648 .row() as f32
649 + 1.0;
650 }
651
652 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
653 0.
654 } else {
655 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
656 };
657 if margin < 0.0 {
658 return false;
659 }
660
661 match autoscroll {
662 Autoscroll::Fit | Autoscroll::Newest => {
663 let margin = margin.min(3.0);
664 let target_top = (first_cursor_top - margin).max(0.0);
665 let target_bottom = last_cursor_bottom + margin;
666 let start_row = scroll_position.y();
667 let end_row = start_row + visible_lines;
668
669 if target_top < start_row {
670 scroll_position.set_y(target_top);
671 self.set_scroll_position(scroll_position, cx);
672 } else if target_bottom >= end_row {
673 scroll_position.set_y(target_bottom - visible_lines);
674 self.set_scroll_position(scroll_position, cx);
675 }
676 }
677 Autoscroll::Center => {
678 scroll_position.set_y((first_cursor_top - margin).max(0.0));
679 self.set_scroll_position(scroll_position, cx);
680 }
681 }
682
683 true
684 }
685
686 pub fn autoscroll_horizontally(
687 &mut self,
688 start_row: u32,
689 viewport_width: f32,
690 scroll_width: f32,
691 max_glyph_width: f32,
692 layouts: &[text_layout::Line],
693 cx: &mut ViewContext<Self>,
694 ) -> bool {
695 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
696 let selections = self.local_selections::<Point>(cx);
697 let mut target_left = std::f32::INFINITY;
698 let mut target_right = 0.0_f32;
699 for selection in selections {
700 let head = selection.head().to_display_point(&display_map);
701 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
702 let start_column = head.column().saturating_sub(3);
703 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
704 target_left = target_left.min(
705 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
706 );
707 target_right = target_right.max(
708 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
709 + max_glyph_width,
710 );
711 }
712 }
713 target_right = target_right.min(scroll_width);
714
715 if target_right - target_left > viewport_width {
716 return false;
717 }
718
719 let scroll_left = self.scroll_position.x() * max_glyph_width;
720 let scroll_right = scroll_left + viewport_width;
721
722 if target_left < scroll_left {
723 self.scroll_position.set_x(target_left / max_glyph_width);
724 true
725 } else if target_right > scroll_right {
726 self.scroll_position
727 .set_x((target_right - viewport_width) / max_glyph_width);
728 true
729 } else {
730 false
731 }
732 }
733
734 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
735 match phase {
736 SelectPhase::Begin {
737 position,
738 add,
739 click_count,
740 } => self.begin_selection(*position, *add, *click_count, cx),
741 SelectPhase::BeginColumnar {
742 position,
743 overshoot,
744 } => self.begin_columnar_selection(*position, *overshoot, cx),
745 SelectPhase::Extend {
746 position,
747 click_count,
748 } => self.extend_selection(*position, *click_count, cx),
749 SelectPhase::Update {
750 position,
751 overshoot,
752 scroll_position,
753 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
754 SelectPhase::End => self.end_selection(cx),
755 }
756 }
757
758 fn extend_selection(
759 &mut self,
760 position: DisplayPoint,
761 click_count: usize,
762 cx: &mut ViewContext<Self>,
763 ) {
764 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
765 let tail = self
766 .newest_selection::<usize>(&display_map.buffer_snapshot)
767 .tail();
768 self.begin_selection(position, false, click_count, cx);
769
770 let position = position.to_offset(&display_map, Bias::Left);
771 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
772 let pending = self.pending_selection.as_mut().unwrap();
773
774 if position >= tail {
775 pending.selection.start = tail_anchor.clone();
776 } else {
777 pending.selection.end = tail_anchor.clone();
778 pending.selection.reversed = true;
779 }
780
781 match &mut pending.mode {
782 SelectMode::Word(range) | SelectMode::Line(range) => {
783 *range = tail_anchor.clone()..tail_anchor
784 }
785 _ => {}
786 }
787 }
788
789 fn begin_selection(
790 &mut self,
791 position: DisplayPoint,
792 add: bool,
793 click_count: usize,
794 cx: &mut ViewContext<Self>,
795 ) {
796 if !self.focused {
797 cx.focus_self();
798 cx.emit(Event::Activate);
799 }
800
801 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
802 let buffer = &display_map.buffer_snapshot;
803 let start;
804 let end;
805 let mode;
806 match click_count {
807 1 => {
808 start = buffer.anchor_before(position.to_point(&display_map));
809 end = start.clone();
810 mode = SelectMode::Character;
811 }
812 2 => {
813 let range = movement::surrounding_word(&display_map, position);
814 start = buffer.anchor_before(range.start.to_point(&display_map));
815 end = buffer.anchor_before(range.end.to_point(&display_map));
816 mode = SelectMode::Word(start.clone()..end.clone());
817 }
818 3 => {
819 let position = display_map.clip_point(position, Bias::Left);
820 let line_start = movement::line_beginning(&display_map, position, false);
821 let mut next_line_start = line_start.clone();
822 *next_line_start.row_mut() += 1;
823 *next_line_start.column_mut() = 0;
824 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
825
826 start = buffer.anchor_before(line_start.to_point(&display_map));
827 end = buffer.anchor_before(next_line_start.to_point(&display_map));
828 mode = SelectMode::Line(start.clone()..end.clone());
829 }
830 _ => {
831 start = buffer.anchor_before(0);
832 end = buffer.anchor_before(buffer.len());
833 mode = SelectMode::All;
834 }
835 }
836
837 let selection = Selection {
838 id: post_inc(&mut self.next_selection_id),
839 start,
840 end,
841 reversed: false,
842 goal: SelectionGoal::None,
843 };
844
845 if !add {
846 self.update_selections::<usize>(Vec::new(), None, cx);
847 } else if click_count > 1 {
848 // Remove the newest selection since it was only added as part of this multi-click.
849 let newest_selection = self.newest_selection::<usize>(buffer);
850 let mut selections = self.local_selections(cx);
851 selections.retain(|selection| selection.id != newest_selection.id);
852 self.update_selections::<usize>(selections, None, cx)
853 }
854
855 self.pending_selection = Some(PendingSelection { selection, mode });
856
857 cx.notify();
858 }
859
860 fn begin_columnar_selection(
861 &mut self,
862 position: DisplayPoint,
863 overshoot: u32,
864 cx: &mut ViewContext<Self>,
865 ) {
866 if !self.focused {
867 cx.focus_self();
868 cx.emit(Event::Activate);
869 }
870
871 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
872 let tail = self
873 .newest_selection::<Point>(&display_map.buffer_snapshot)
874 .tail();
875 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
876
877 self.select_columns(
878 tail.to_display_point(&display_map),
879 position,
880 overshoot,
881 &display_map,
882 cx,
883 );
884 }
885
886 fn update_selection(
887 &mut self,
888 position: DisplayPoint,
889 overshoot: u32,
890 scroll_position: Vector2F,
891 cx: &mut ViewContext<Self>,
892 ) {
893 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
894
895 if let Some(tail) = self.columnar_selection_tail.as_ref() {
896 let tail = tail.to_display_point(&display_map);
897 self.select_columns(tail, position, overshoot, &display_map, cx);
898 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
899 let buffer = self.buffer.read(cx).snapshot(cx);
900 let head;
901 let tail;
902 match mode {
903 SelectMode::Character => {
904 head = position.to_point(&display_map);
905 tail = selection.tail().to_point(&buffer);
906 }
907 SelectMode::Word(original_range) => {
908 let original_display_range = original_range.start.to_display_point(&display_map)
909 ..original_range.end.to_display_point(&display_map);
910 let original_buffer_range = original_display_range.start.to_point(&display_map)
911 ..original_display_range.end.to_point(&display_map);
912 if movement::is_inside_word(&display_map, position)
913 || original_display_range.contains(&position)
914 {
915 let word_range = movement::surrounding_word(&display_map, position);
916 if word_range.start < original_display_range.start {
917 head = word_range.start.to_point(&display_map);
918 } else {
919 head = word_range.end.to_point(&display_map);
920 }
921 } else {
922 head = position.to_point(&display_map);
923 }
924
925 if head <= original_buffer_range.start {
926 tail = original_buffer_range.end;
927 } else {
928 tail = original_buffer_range.start;
929 }
930 }
931 SelectMode::Line(original_range) => {
932 let original_display_range = original_range.start.to_display_point(&display_map)
933 ..original_range.end.to_display_point(&display_map);
934 let original_buffer_range = original_display_range.start.to_point(&display_map)
935 ..original_display_range.end.to_point(&display_map);
936 let line_start = movement::line_beginning(&display_map, position, false);
937 let mut next_line_start = line_start.clone();
938 *next_line_start.row_mut() += 1;
939 *next_line_start.column_mut() = 0;
940 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
941
942 if line_start < original_display_range.start {
943 head = line_start.to_point(&display_map);
944 } else {
945 head = next_line_start.to_point(&display_map);
946 }
947
948 if head <= original_buffer_range.start {
949 tail = original_buffer_range.end;
950 } else {
951 tail = original_buffer_range.start;
952 }
953 }
954 SelectMode::All => {
955 return;
956 }
957 };
958
959 if head < tail {
960 selection.start = buffer.anchor_before(head);
961 selection.end = buffer.anchor_before(tail);
962 selection.reversed = true;
963 } else {
964 selection.start = buffer.anchor_before(tail);
965 selection.end = buffer.anchor_before(head);
966 selection.reversed = false;
967 }
968 } else {
969 log::error!("update_selection dispatched with no pending selection");
970 return;
971 }
972
973 self.set_scroll_position(scroll_position, cx);
974 cx.notify();
975 }
976
977 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
978 self.columnar_selection_tail.take();
979 if self.pending_selection.is_some() {
980 let selections = self.local_selections::<usize>(cx);
981 self.update_selections(selections, None, cx);
982 }
983 }
984
985 fn select_columns(
986 &mut self,
987 tail: DisplayPoint,
988 head: DisplayPoint,
989 overshoot: u32,
990 display_map: &DisplaySnapshot,
991 cx: &mut ViewContext<Self>,
992 ) {
993 let start_row = cmp::min(tail.row(), head.row());
994 let end_row = cmp::max(tail.row(), head.row());
995 let start_column = cmp::min(tail.column(), head.column() + overshoot);
996 let end_column = cmp::max(tail.column(), head.column() + overshoot);
997 let reversed = start_column < tail.column();
998
999 let selections = (start_row..=end_row)
1000 .filter_map(|row| {
1001 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1002 let start = display_map
1003 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1004 .to_point(&display_map);
1005 let end = display_map
1006 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1007 .to_point(&display_map);
1008 Some(Selection {
1009 id: post_inc(&mut self.next_selection_id),
1010 start,
1011 end,
1012 reversed,
1013 goal: SelectionGoal::None,
1014 })
1015 } else {
1016 None
1017 }
1018 })
1019 .collect::<Vec<_>>();
1020
1021 self.update_selections(selections, None, cx);
1022 cx.notify();
1023 }
1024
1025 pub fn is_selecting(&self) -> bool {
1026 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1027 }
1028
1029 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1030 if self.active_diagnostics.is_some() {
1031 self.dismiss_diagnostics(cx);
1032 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1033 let buffer = self.buffer.read(cx).snapshot(cx);
1034 let selection = Selection {
1035 id: selection.id,
1036 start: selection.start.to_point(&buffer),
1037 end: selection.end.to_point(&buffer),
1038 reversed: selection.reversed,
1039 goal: selection.goal,
1040 };
1041 if self.local_selections::<Point>(cx).is_empty() {
1042 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1043 }
1044 } else {
1045 let buffer = self.buffer.read(cx).snapshot(cx);
1046 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1047 if self.selection_count() == 1 {
1048 if oldest_selection.is_empty() {
1049 cx.propagate_action();
1050 return;
1051 }
1052
1053 oldest_selection.start = oldest_selection.head().clone();
1054 oldest_selection.end = oldest_selection.head().clone();
1055 }
1056 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1057 }
1058 }
1059
1060 pub fn select_ranges<I, T>(
1061 &mut self,
1062 ranges: I,
1063 autoscroll: Option<Autoscroll>,
1064 cx: &mut ViewContext<Self>,
1065 ) where
1066 I: IntoIterator<Item = Range<T>>,
1067 T: ToOffset,
1068 {
1069 let buffer = self.buffer.read(cx).snapshot(cx);
1070 let selections = ranges
1071 .into_iter()
1072 .map(|range| {
1073 let mut start = range.start.to_offset(&buffer);
1074 let mut end = range.end.to_offset(&buffer);
1075 let reversed = if start > end {
1076 mem::swap(&mut start, &mut end);
1077 true
1078 } else {
1079 false
1080 };
1081 Selection {
1082 id: post_inc(&mut self.next_selection_id),
1083 start,
1084 end,
1085 reversed,
1086 goal: SelectionGoal::None,
1087 }
1088 })
1089 .collect();
1090 self.update_selections(selections, autoscroll, cx);
1091 }
1092
1093 #[cfg(test)]
1094 fn select_display_ranges<'a, T>(
1095 &mut self,
1096 ranges: T,
1097 cx: &mut ViewContext<Self>,
1098 ) -> anyhow::Result<()>
1099 where
1100 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1101 {
1102 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1103 let selections = ranges
1104 .into_iter()
1105 .map(|range| {
1106 let mut start = range.start;
1107 let mut end = range.end;
1108 let reversed = if start > end {
1109 mem::swap(&mut start, &mut end);
1110 true
1111 } else {
1112 false
1113 };
1114 Selection {
1115 id: post_inc(&mut self.next_selection_id),
1116 start: start.to_point(&display_map),
1117 end: end.to_point(&display_map),
1118 reversed,
1119 goal: SelectionGoal::None,
1120 }
1121 })
1122 .collect();
1123 self.update_selections(selections, None, cx);
1124 Ok(())
1125 }
1126
1127 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1128 let text = action.0.as_ref();
1129 if !self.skip_autoclose_end(text, cx) {
1130 self.start_transaction(cx);
1131 self.insert(text, cx);
1132 self.autoclose_pairs(cx);
1133 self.end_transaction(cx);
1134 }
1135 }
1136
1137 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1138 self.start_transaction(cx);
1139 let mut old_selections = SmallVec::<[_; 32]>::new();
1140 {
1141 let selections = self.local_selections::<Point>(cx);
1142 let buffer = self.buffer.read(cx).snapshot(cx);
1143 for selection in selections.iter() {
1144 let start_point = selection.start;
1145 let indent = buffer
1146 .indent_column_for_line(start_point.row)
1147 .min(start_point.column);
1148 let start = selection.start.to_offset(&buffer);
1149 let end = selection.end.to_offset(&buffer);
1150
1151 let mut insert_extra_newline = false;
1152 if let Some(language) = buffer.language() {
1153 let leading_whitespace_len = buffer
1154 .reversed_chars_at(start)
1155 .take_while(|c| c.is_whitespace() && *c != '\n')
1156 .map(|c| c.len_utf8())
1157 .sum::<usize>();
1158
1159 let trailing_whitespace_len = buffer
1160 .chars_at(end)
1161 .take_while(|c| c.is_whitespace() && *c != '\n')
1162 .map(|c| c.len_utf8())
1163 .sum::<usize>();
1164
1165 insert_extra_newline = language.brackets().iter().any(|pair| {
1166 let pair_start = pair.start.trim_end();
1167 let pair_end = pair.end.trim_start();
1168
1169 pair.newline
1170 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1171 && buffer.contains_str_at(
1172 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1173 pair_start,
1174 )
1175 });
1176 }
1177
1178 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1179 }
1180 }
1181
1182 let mut new_selections = Vec::with_capacity(old_selections.len());
1183 self.buffer.update(cx, |buffer, cx| {
1184 let mut delta = 0_isize;
1185 let mut pending_edit: Option<PendingEdit> = None;
1186 for (_, range, indent, insert_extra_newline) in &old_selections {
1187 if pending_edit.as_ref().map_or(false, |pending| {
1188 pending.indent != *indent
1189 || pending.insert_extra_newline != *insert_extra_newline
1190 }) {
1191 let pending = pending_edit.take().unwrap();
1192 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1193 new_text.push('\n');
1194 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1195 if pending.insert_extra_newline {
1196 new_text = new_text.repeat(2);
1197 }
1198 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1199 delta += pending.delta;
1200 }
1201
1202 let start = (range.start as isize + delta) as usize;
1203 let end = (range.end as isize + delta) as usize;
1204 let mut text_len = *indent as usize + 1;
1205 if *insert_extra_newline {
1206 text_len *= 2;
1207 }
1208
1209 let pending = pending_edit.get_or_insert_with(Default::default);
1210 pending.delta += text_len as isize - (end - start) as isize;
1211 pending.indent = *indent;
1212 pending.insert_extra_newline = *insert_extra_newline;
1213 pending.ranges.push(start..end);
1214 }
1215
1216 let pending = pending_edit.unwrap();
1217 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1218 new_text.push('\n');
1219 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1220 if pending.insert_extra_newline {
1221 new_text = new_text.repeat(2);
1222 }
1223 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1224
1225 let mut delta = 0_isize;
1226 new_selections.extend(old_selections.into_iter().map(
1227 |(id, range, indent, insert_extra_newline)| {
1228 let start = (range.start as isize + delta) as usize;
1229 let end = (range.end as isize + delta) as usize;
1230 let text_before_cursor_len = indent as usize + 1;
1231 let cursor = start + text_before_cursor_len;
1232 let text_len = if insert_extra_newline {
1233 text_before_cursor_len * 2
1234 } else {
1235 text_before_cursor_len
1236 };
1237 delta += text_len as isize - (end - start) as isize;
1238 Selection {
1239 id,
1240 start: cursor,
1241 end: cursor,
1242 reversed: false,
1243 goal: SelectionGoal::None,
1244 }
1245 },
1246 ))
1247 });
1248
1249 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1250 self.end_transaction(cx);
1251
1252 #[derive(Default)]
1253 struct PendingEdit {
1254 indent: u32,
1255 insert_extra_newline: bool,
1256 delta: isize,
1257 ranges: SmallVec<[Range<usize>; 32]>,
1258 }
1259 }
1260
1261 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1262 self.start_transaction(cx);
1263 let old_selections = self.local_selections::<usize>(cx);
1264 self.buffer.update(cx, |buffer, cx| {
1265 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1266 buffer.edit_with_autoindent(edit_ranges, text, cx);
1267 });
1268
1269 let selections = self.local_selections::<usize>(cx);
1270 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1271 self.end_transaction(cx);
1272 }
1273
1274 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1275 let selections = self.local_selections::<usize>(cx);
1276 let mut bracket_pair_state = None;
1277 let mut new_selections = None;
1278 self.buffer.update(cx, |buffer, cx| {
1279 let mut snapshot = buffer.snapshot(cx);
1280 let left_biased_selections = selections
1281 .iter()
1282 .map(|selection| Selection {
1283 id: selection.id,
1284 start: snapshot.anchor_before(selection.start),
1285 end: snapshot.anchor_before(selection.end),
1286 reversed: selection.reversed,
1287 goal: selection.goal,
1288 })
1289 .collect::<Vec<_>>();
1290
1291 let autoclose_pair = snapshot.language().and_then(|language| {
1292 let first_selection_start = selections.first().unwrap().start;
1293 let pair = language.brackets().iter().find(|pair| {
1294 snapshot.contains_str_at(
1295 first_selection_start.saturating_sub(pair.start.len()),
1296 &pair.start,
1297 )
1298 });
1299 pair.and_then(|pair| {
1300 let should_autoclose = selections[1..].iter().all(|selection| {
1301 snapshot.contains_str_at(
1302 selection.start.saturating_sub(pair.start.len()),
1303 &pair.start,
1304 )
1305 });
1306
1307 if should_autoclose {
1308 Some(pair.clone())
1309 } else {
1310 None
1311 }
1312 })
1313 });
1314
1315 if let Some(pair) = autoclose_pair {
1316 let selection_ranges = selections
1317 .iter()
1318 .map(|selection| {
1319 let start = selection.start.to_offset(&snapshot);
1320 start..start
1321 })
1322 .collect::<SmallVec<[_; 32]>>();
1323
1324 buffer.edit(selection_ranges, &pair.end, cx);
1325 snapshot = buffer.snapshot(cx);
1326
1327 new_selections = Some(
1328 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1329 .collect::<Vec<_>>(),
1330 );
1331
1332 if pair.end.len() == 1 {
1333 let mut delta = 0;
1334 bracket_pair_state = Some(BracketPairState {
1335 ranges: selections
1336 .iter()
1337 .map(move |selection| {
1338 let offset = selection.start + delta;
1339 delta += 1;
1340 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1341 })
1342 .collect(),
1343 pair,
1344 });
1345 }
1346 }
1347 });
1348
1349 if let Some(new_selections) = new_selections {
1350 self.update_selections(new_selections, None, cx);
1351 }
1352 if let Some(bracket_pair_state) = bracket_pair_state {
1353 self.autoclose_stack.push(bracket_pair_state);
1354 }
1355 }
1356
1357 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1358 let old_selections = self.local_selections::<usize>(cx);
1359 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1360 autoclose_pair
1361 } else {
1362 return false;
1363 };
1364 if text != autoclose_pair.pair.end {
1365 return false;
1366 }
1367
1368 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1369
1370 let buffer = self.buffer.read(cx).snapshot(cx);
1371 if old_selections
1372 .iter()
1373 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1374 .all(|(selection, autoclose_range)| {
1375 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1376 selection.is_empty() && selection.start == autoclose_range_end
1377 })
1378 {
1379 let new_selections = old_selections
1380 .into_iter()
1381 .map(|selection| {
1382 let cursor = selection.start + 1;
1383 Selection {
1384 id: selection.id,
1385 start: cursor,
1386 end: cursor,
1387 reversed: false,
1388 goal: SelectionGoal::None,
1389 }
1390 })
1391 .collect();
1392 self.autoclose_stack.pop();
1393 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1394 true
1395 } else {
1396 false
1397 }
1398 }
1399
1400 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1401 self.start_transaction(cx);
1402 self.select_all(&SelectAll, cx);
1403 self.insert("", cx);
1404 self.end_transaction(cx);
1405 }
1406
1407 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1408 self.start_transaction(cx);
1409 let mut selections = self.local_selections::<Point>(cx);
1410 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1411 for selection in &mut selections {
1412 if selection.is_empty() {
1413 let head = selection.head().to_display_point(&display_map);
1414 let cursor = movement::left(&display_map, head)
1415 .unwrap()
1416 .to_point(&display_map);
1417 selection.set_head(cursor);
1418 selection.goal = SelectionGoal::None;
1419 }
1420 }
1421 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1422 self.insert("", cx);
1423 self.end_transaction(cx);
1424 }
1425
1426 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1427 self.start_transaction(cx);
1428 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1429 let mut selections = self.local_selections::<Point>(cx);
1430 for selection in &mut selections {
1431 if selection.is_empty() {
1432 let head = selection.head().to_display_point(&display_map);
1433 let cursor = movement::right(&display_map, head)
1434 .unwrap()
1435 .to_point(&display_map);
1436 selection.set_head(cursor);
1437 selection.goal = SelectionGoal::None;
1438 }
1439 }
1440 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1441 self.insert(&"", cx);
1442 self.end_transaction(cx);
1443 }
1444
1445 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1446 self.start_transaction(cx);
1447 let tab_size = (self.build_settings)(cx).tab_size;
1448 let mut selections = self.local_selections::<Point>(cx);
1449 let mut last_indent = None;
1450 self.buffer.update(cx, |buffer, cx| {
1451 for selection in &mut selections {
1452 if selection.is_empty() {
1453 let char_column = buffer
1454 .read(cx)
1455 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1456 .flat_map(str::chars)
1457 .count();
1458 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1459 buffer.edit(
1460 [selection.start..selection.start],
1461 " ".repeat(chars_to_next_tab_stop),
1462 cx,
1463 );
1464 selection.start.column += chars_to_next_tab_stop as u32;
1465 selection.end = selection.start;
1466 } else {
1467 let mut start_row = selection.start.row;
1468 let mut end_row = selection.end.row + 1;
1469
1470 // If a selection ends at the beginning of a line, don't indent
1471 // that last line.
1472 if selection.end.column == 0 {
1473 end_row -= 1;
1474 }
1475
1476 // Avoid re-indenting a row that has already been indented by a
1477 // previous selection, but still update this selection's column
1478 // to reflect that indentation.
1479 if let Some((last_indent_row, last_indent_len)) = last_indent {
1480 if last_indent_row == selection.start.row {
1481 selection.start.column += last_indent_len;
1482 start_row += 1;
1483 }
1484 if last_indent_row == selection.end.row {
1485 selection.end.column += last_indent_len;
1486 }
1487 }
1488
1489 for row in start_row..end_row {
1490 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1491 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1492 let row_start = Point::new(row, 0);
1493 buffer.edit(
1494 [row_start..row_start],
1495 " ".repeat(columns_to_next_tab_stop),
1496 cx,
1497 );
1498
1499 // Update this selection's endpoints to reflect the indentation.
1500 if row == selection.start.row {
1501 selection.start.column += columns_to_next_tab_stop as u32;
1502 }
1503 if row == selection.end.row {
1504 selection.end.column += columns_to_next_tab_stop as u32;
1505 }
1506
1507 last_indent = Some((row, columns_to_next_tab_stop as u32));
1508 }
1509 }
1510 }
1511 });
1512
1513 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1514 self.end_transaction(cx);
1515 }
1516
1517 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1518 self.start_transaction(cx);
1519 let tab_size = (self.build_settings)(cx).tab_size;
1520 let selections = self.local_selections::<Point>(cx);
1521 let mut deletion_ranges = Vec::new();
1522 let mut last_outdent = None;
1523 {
1524 let buffer = self.buffer.read(cx).read(cx);
1525 for selection in &selections {
1526 let mut start_row = selection.start.row;
1527 let mut end_row = selection.end.row + 1;
1528
1529 // If a selection ends at the beginning of a line, don't indent
1530 // that last line.
1531 if selection.end.column == 0 {
1532 end_row -= 1;
1533 }
1534
1535 // Avoid re-outdenting a row that has already been outdented by a
1536 // previous selection.
1537 if let Some(last_row) = last_outdent {
1538 if last_row == selection.start.row {
1539 start_row += 1;
1540 }
1541 }
1542
1543 for row in start_row..end_row {
1544 let column = buffer.indent_column_for_line(row) as usize;
1545 if column > 0 {
1546 let mut deletion_len = (column % tab_size) as u32;
1547 if deletion_len == 0 {
1548 deletion_len = tab_size as u32;
1549 }
1550 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1551 last_outdent = Some(row);
1552 }
1553 }
1554 }
1555 }
1556 self.buffer.update(cx, |buffer, cx| {
1557 buffer.edit(deletion_ranges, "", cx);
1558 });
1559
1560 self.update_selections(
1561 self.local_selections::<usize>(cx),
1562 Some(Autoscroll::Fit),
1563 cx,
1564 );
1565 self.end_transaction(cx);
1566 }
1567
1568 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1569 self.start_transaction(cx);
1570
1571 let selections = self.local_selections::<Point>(cx);
1572 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1573 let buffer = self.buffer.read(cx).snapshot(cx);
1574
1575 let mut row_delta = 0;
1576 let mut new_cursors = Vec::new();
1577 let mut edit_ranges = Vec::new();
1578 let mut selections = selections.iter().peekable();
1579 while let Some(selection) = selections.next() {
1580 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1581 let goal_display_column = selection.head().to_display_point(&display_map).column();
1582
1583 // Accumulate contiguous regions of rows that we want to delete.
1584 while let Some(next_selection) = selections.peek() {
1585 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1586 if next_rows.start <= rows.end {
1587 rows.end = next_rows.end;
1588 selections.next().unwrap();
1589 } else {
1590 break;
1591 }
1592 }
1593
1594 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1595 let edit_end;
1596 let cursor_buffer_row;
1597 if buffer.max_point().row >= rows.end {
1598 // If there's a line after the range, delete the \n from the end of the row range
1599 // and position the cursor on the next line.
1600 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1601 cursor_buffer_row = rows.start;
1602 } else {
1603 // If there isn't a line after the range, delete the \n from the line before the
1604 // start of the row range and position the cursor there.
1605 edit_start = edit_start.saturating_sub(1);
1606 edit_end = buffer.len();
1607 cursor_buffer_row = rows.start.saturating_sub(1);
1608 }
1609
1610 let mut cursor =
1611 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1612 *cursor.column_mut() =
1613 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1614 row_delta += rows.len() as u32;
1615
1616 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1617 edit_ranges.push(edit_start..edit_end);
1618 }
1619
1620 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1621 let new_selections = new_cursors
1622 .into_iter()
1623 .map(|(id, cursor)| Selection {
1624 id,
1625 start: cursor,
1626 end: cursor,
1627 reversed: false,
1628 goal: SelectionGoal::None,
1629 })
1630 .collect();
1631 self.buffer
1632 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1633 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1634 self.end_transaction(cx);
1635 }
1636
1637 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1638 self.start_transaction(cx);
1639
1640 let mut selections = self.local_selections::<Point>(cx);
1641 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1642 let buffer = &display_map.buffer_snapshot;
1643
1644 let mut edits = Vec::new();
1645 let mut selections_iter = selections.iter().peekable();
1646 while let Some(selection) = selections_iter.next() {
1647 // Avoid duplicating the same lines twice.
1648 let mut rows = selection.spanned_rows(false, &display_map).buffer_rows;
1649
1650 while let Some(next_selection) = selections_iter.peek() {
1651 let next_rows = next_selection.spanned_rows(false, &display_map).buffer_rows;
1652 if next_rows.start <= rows.end - 1 {
1653 rows.end = next_rows.end;
1654 selections_iter.next().unwrap();
1655 } else {
1656 break;
1657 }
1658 }
1659
1660 // Copy the text from the selected row region and splice it at the start of the region.
1661 let start = Point::new(rows.start, 0);
1662 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1663 let text = buffer
1664 .text_for_range(start..end)
1665 .chain(Some("\n"))
1666 .collect::<String>();
1667 edits.push((start, text, rows.len() as u32));
1668 }
1669
1670 let mut edits_iter = edits.iter().peekable();
1671 let mut row_delta = 0;
1672 for selection in selections.iter_mut() {
1673 while let Some((point, _, line_count)) = edits_iter.peek() {
1674 if *point <= selection.start {
1675 row_delta += line_count;
1676 edits_iter.next();
1677 } else {
1678 break;
1679 }
1680 }
1681 selection.start.row += row_delta;
1682 selection.end.row += row_delta;
1683 }
1684
1685 self.buffer.update(cx, |buffer, cx| {
1686 for (point, text, _) in edits.into_iter().rev() {
1687 buffer.edit(Some(point..point), text, cx);
1688 }
1689 });
1690
1691 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1692 self.end_transaction(cx);
1693 }
1694
1695 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1696 self.start_transaction(cx);
1697
1698 let selections = self.local_selections::<Point>(cx);
1699 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1700 let buffer = self.buffer.read(cx).snapshot(cx);
1701
1702 let mut edits = Vec::new();
1703 let mut new_selection_ranges = Vec::new();
1704 let mut old_folds = Vec::new();
1705 let mut new_folds = Vec::new();
1706
1707 let mut selections = selections.iter().peekable();
1708 let mut contiguous_selections = Vec::new();
1709 while let Some(selection) = selections.next() {
1710 // Accumulate contiguous regions of rows that we want to move.
1711 contiguous_selections.push(selection.point_range(&buffer));
1712 let SpannedRows {
1713 mut buffer_rows,
1714 mut display_rows,
1715 } = selection.spanned_rows(false, &display_map);
1716
1717 while let Some(next_selection) = selections.peek() {
1718 let SpannedRows {
1719 buffer_rows: next_buffer_rows,
1720 display_rows: next_display_rows,
1721 } = next_selection.spanned_rows(false, &display_map);
1722 if next_buffer_rows.start <= buffer_rows.end {
1723 buffer_rows.end = next_buffer_rows.end;
1724 display_rows.end = next_display_rows.end;
1725 contiguous_selections.push(next_selection.point_range(&buffer));
1726 selections.next().unwrap();
1727 } else {
1728 break;
1729 }
1730 }
1731
1732 // Cut the text from the selected rows and paste it at the start of the previous line.
1733 if display_rows.start != 0 {
1734 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1735 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1736 .to_offset(&buffer);
1737
1738 let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
1739 let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
1740 let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(&buffer);
1741
1742 let mut text = String::new();
1743 text.extend(buffer.text_for_range(start..end));
1744 text.push('\n');
1745 edits.push((
1746 prev_row_buffer_start_offset..prev_row_buffer_start_offset,
1747 text,
1748 ));
1749 edits.push((start - 1..end, String::new()));
1750
1751 let row_delta = buffer_rows.start - prev_row_buffer_start.row;
1752
1753 // Move selections up.
1754 for range in &mut contiguous_selections {
1755 range.start.row -= row_delta;
1756 range.end.row -= row_delta;
1757 }
1758
1759 // Move folds up.
1760 old_folds.push(start..end);
1761 for fold in display_map.folds_in_range(start..end) {
1762 let mut start = fold.start.to_point(&buffer);
1763 let mut end = fold.end.to_point(&buffer);
1764 start.row -= row_delta;
1765 end.row -= row_delta;
1766 new_folds.push(start..end);
1767 }
1768 }
1769
1770 new_selection_ranges.extend(contiguous_selections.drain(..));
1771 }
1772
1773 self.unfold_ranges(old_folds, cx);
1774 self.buffer.update(cx, |buffer, cx| {
1775 for (range, text) in edits.into_iter().rev() {
1776 buffer.edit(Some(range), text, cx);
1777 }
1778 });
1779 self.fold_ranges(new_folds, cx);
1780 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1781
1782 self.end_transaction(cx);
1783 }
1784
1785 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1786 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1787 let buffer = self.buffer.read(cx).snapshot(cx);
1788
1789 let mut edits = Vec::new();
1790 let mut unfold_ranges = Vec::new();
1791 let mut refold_ranges = Vec::new();
1792
1793 let selections = self.local_selections::<Point>(cx);
1794 let mut selections = selections.iter().peekable();
1795 let mut contiguous_row_selections = Vec::new();
1796 let mut new_selections = Vec::new();
1797
1798 while let Some(selection) = selections.next() {
1799 // Find all the selections that span a contiguous row range
1800 contiguous_row_selections.push(selection.clone());
1801 let start_row = selection.start.row;
1802 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1803 display_map.next_line_boundary(selection.end).row + 1
1804 } else {
1805 selection.end.row
1806 };
1807
1808 while let Some(next_selection) = selections.peek() {
1809 if next_selection.start.row <= end_row {
1810 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1811 display_map.next_line_boundary(next_selection.end).row + 1
1812 } else {
1813 next_selection.end.row
1814 };
1815 contiguous_row_selections.push(selections.next().unwrap().clone());
1816 } else {
1817 break;
1818 }
1819 }
1820
1821 // Move the text spanned by the row range to be after the last line of the row range
1822 if end_row <= buffer.max_point().row {
1823 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1824 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0));
1825 let mut text = String::from("\n");
1826 text.extend(buffer.text_for_range(range_to_move.clone()));
1827 text.pop(); // Drop trailing newline
1828 edits.push((range_to_move.clone(), String::new()));
1829 edits.push((insertion_point..insertion_point, text));
1830
1831 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1832
1833 // Make the selections relative to the insertion row
1834 new_selections.extend(contiguous_row_selections.drain(..).map(|mut selection| {
1835 selection.start.row += row_delta;
1836 selection.end.row += row_delta;
1837 selection
1838 }));
1839
1840 // Unfold all the folds spanned by these rows
1841 unfold_ranges.push(range_to_move.clone());
1842
1843 // Refold ranges relative to the insertion row
1844 for fold in display_map.folds_in_range(
1845 buffer.anchor_before(range_to_move.start)
1846 ..buffer.anchor_after(range_to_move.end),
1847 ) {
1848 let mut start = fold.start.to_point(&buffer);
1849 let mut end = fold.end.to_point(&buffer);
1850 start.row += row_delta;
1851 end.row += row_delta;
1852 refold_ranges.push(start..end);
1853 }
1854 } else {
1855 new_selections.extend(contiguous_row_selections.drain(..));
1856 }
1857 }
1858
1859 self.start_transaction(cx);
1860 self.unfold_ranges(unfold_ranges, cx);
1861 self.buffer.update(cx, |buffer, cx| {
1862 for (range, text) in edits.into_iter().rev() {
1863 buffer.edit([range], text, cx);
1864 }
1865 });
1866 self.fold_ranges(refold_ranges, cx);
1867 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1868 self.end_transaction(cx);
1869 }
1870
1871 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1872 self.start_transaction(cx);
1873 let mut text = String::new();
1874 let mut selections = self.local_selections::<Point>(cx);
1875 let mut clipboard_selections = Vec::with_capacity(selections.len());
1876 {
1877 let buffer = self.buffer.read(cx).read(cx);
1878 let max_point = buffer.max_point();
1879 for selection in &mut selections {
1880 let is_entire_line = selection.is_empty();
1881 if is_entire_line {
1882 selection.start = Point::new(selection.start.row, 0);
1883 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1884 }
1885 let mut len = 0;
1886 for chunk in buffer.text_for_range(selection.start..selection.end) {
1887 text.push_str(chunk);
1888 len += chunk.len();
1889 }
1890 clipboard_selections.push(ClipboardSelection {
1891 len,
1892 is_entire_line,
1893 });
1894 }
1895 }
1896 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1897 self.insert("", cx);
1898 self.end_transaction(cx);
1899
1900 cx.as_mut()
1901 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1902 }
1903
1904 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1905 let selections = self.local_selections::<Point>(cx);
1906 let mut text = String::new();
1907 let mut clipboard_selections = Vec::with_capacity(selections.len());
1908 {
1909 let buffer = self.buffer.read(cx).read(cx);
1910 let max_point = buffer.max_point();
1911 for selection in selections.iter() {
1912 let mut start = selection.start;
1913 let mut end = selection.end;
1914 let is_entire_line = selection.is_empty();
1915 if is_entire_line {
1916 start = Point::new(start.row, 0);
1917 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1918 }
1919 let mut len = 0;
1920 for chunk in buffer.text_for_range(start..end) {
1921 text.push_str(chunk);
1922 len += chunk.len();
1923 }
1924 clipboard_selections.push(ClipboardSelection {
1925 len,
1926 is_entire_line,
1927 });
1928 }
1929 }
1930
1931 cx.as_mut()
1932 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1933 }
1934
1935 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1936 if let Some(item) = cx.as_mut().read_from_clipboard() {
1937 let clipboard_text = item.text();
1938 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1939 let mut selections = self.local_selections::<usize>(cx);
1940 let all_selections_were_entire_line =
1941 clipboard_selections.iter().all(|s| s.is_entire_line);
1942 if clipboard_selections.len() != selections.len() {
1943 clipboard_selections.clear();
1944 }
1945
1946 let mut delta = 0_isize;
1947 let mut start_offset = 0;
1948 for (i, selection) in selections.iter_mut().enumerate() {
1949 let to_insert;
1950 let entire_line;
1951 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1952 let end_offset = start_offset + clipboard_selection.len;
1953 to_insert = &clipboard_text[start_offset..end_offset];
1954 entire_line = clipboard_selection.is_entire_line;
1955 start_offset = end_offset
1956 } else {
1957 to_insert = clipboard_text.as_str();
1958 entire_line = all_selections_were_entire_line;
1959 }
1960
1961 selection.start = (selection.start as isize + delta) as usize;
1962 selection.end = (selection.end as isize + delta) as usize;
1963
1964 self.buffer.update(cx, |buffer, cx| {
1965 // If the corresponding selection was empty when this slice of the
1966 // clipboard text was written, then the entire line containing the
1967 // selection was copied. If this selection is also currently empty,
1968 // then paste the line before the current line of the buffer.
1969 let range = if selection.is_empty() && entire_line {
1970 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1971 let line_start = selection.start - column;
1972 line_start..line_start
1973 } else {
1974 selection.start..selection.end
1975 };
1976
1977 delta += to_insert.len() as isize - range.len() as isize;
1978 buffer.edit([range], to_insert, cx);
1979 selection.start += to_insert.len();
1980 selection.end = selection.start;
1981 });
1982 }
1983 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1984 } else {
1985 self.insert(clipboard_text, cx);
1986 }
1987 }
1988 }
1989
1990 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1991 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
1992 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
1993 self.set_selections(selections, cx);
1994 }
1995 self.request_autoscroll(Autoscroll::Fit, cx);
1996 }
1997 }
1998
1999 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2000 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2001 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2002 self.set_selections(selections, cx);
2003 }
2004 self.request_autoscroll(Autoscroll::Fit, cx);
2005 }
2006 }
2007
2008 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2009 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2010 let mut selections = self.local_selections::<Point>(cx);
2011 for selection in &mut selections {
2012 let start = selection.start.to_display_point(&display_map);
2013 let end = selection.end.to_display_point(&display_map);
2014
2015 if start != end {
2016 selection.end = selection.start.clone();
2017 } else {
2018 let cursor = movement::left(&display_map, start)
2019 .unwrap()
2020 .to_point(&display_map);
2021 selection.start = cursor.clone();
2022 selection.end = cursor;
2023 }
2024 selection.reversed = false;
2025 selection.goal = SelectionGoal::None;
2026 }
2027 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2028 }
2029
2030 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2031 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2032 let mut selections = self.local_selections::<Point>(cx);
2033 for selection in &mut selections {
2034 let head = selection.head().to_display_point(&display_map);
2035 let cursor = movement::left(&display_map, head)
2036 .unwrap()
2037 .to_point(&display_map);
2038 selection.set_head(cursor);
2039 selection.goal = SelectionGoal::None;
2040 }
2041 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2042 }
2043
2044 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2045 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2046 let mut selections = self.local_selections::<Point>(cx);
2047 for selection in &mut selections {
2048 let start = selection.start.to_display_point(&display_map);
2049 let end = selection.end.to_display_point(&display_map);
2050
2051 if start != end {
2052 selection.start = selection.end.clone();
2053 } else {
2054 let cursor = movement::right(&display_map, end)
2055 .unwrap()
2056 .to_point(&display_map);
2057 selection.start = cursor;
2058 selection.end = cursor;
2059 }
2060 selection.reversed = false;
2061 selection.goal = SelectionGoal::None;
2062 }
2063 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2064 }
2065
2066 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2067 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2068 let mut selections = self.local_selections::<Point>(cx);
2069 for selection in &mut selections {
2070 let head = selection.head().to_display_point(&display_map);
2071 let cursor = movement::right(&display_map, head)
2072 .unwrap()
2073 .to_point(&display_map);
2074 selection.set_head(cursor);
2075 selection.goal = SelectionGoal::None;
2076 }
2077 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2078 }
2079
2080 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2081 if matches!(self.mode, EditorMode::SingleLine) {
2082 cx.propagate_action();
2083 return;
2084 }
2085
2086 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2087 let mut selections = self.local_selections::<Point>(cx);
2088 for selection in &mut selections {
2089 let start = selection.start.to_display_point(&display_map);
2090 let end = selection.end.to_display_point(&display_map);
2091 if start != end {
2092 selection.goal = SelectionGoal::None;
2093 }
2094
2095 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2096 let cursor = start.to_point(&display_map);
2097 selection.start = cursor;
2098 selection.end = cursor;
2099 selection.goal = goal;
2100 selection.reversed = false;
2101 }
2102 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2103 }
2104
2105 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2106 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2107 let mut selections = self.local_selections::<Point>(cx);
2108 for selection in &mut selections {
2109 let head = selection.head().to_display_point(&display_map);
2110 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2111 let cursor = head.to_point(&display_map);
2112 selection.set_head(cursor);
2113 selection.goal = goal;
2114 }
2115 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2116 }
2117
2118 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2119 if matches!(self.mode, EditorMode::SingleLine) {
2120 cx.propagate_action();
2121 return;
2122 }
2123
2124 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2125 let mut selections = self.local_selections::<Point>(cx);
2126 for selection in &mut selections {
2127 let start = selection.start.to_display_point(&display_map);
2128 let end = selection.end.to_display_point(&display_map);
2129 if start != end {
2130 selection.goal = SelectionGoal::None;
2131 }
2132
2133 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2134 let cursor = start.to_point(&display_map);
2135 selection.start = cursor;
2136 selection.end = cursor;
2137 selection.goal = goal;
2138 selection.reversed = false;
2139 }
2140 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2141 }
2142
2143 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2144 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2145 let mut selections = self.local_selections::<Point>(cx);
2146 for selection in &mut selections {
2147 let head = selection.head().to_display_point(&display_map);
2148 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2149 let cursor = head.to_point(&display_map);
2150 selection.set_head(cursor);
2151 selection.goal = goal;
2152 }
2153 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2154 }
2155
2156 pub fn move_to_previous_word_boundary(
2157 &mut self,
2158 _: &MoveToPreviousWordBoundary,
2159 cx: &mut ViewContext<Self>,
2160 ) {
2161 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2162 let mut selections = self.local_selections::<Point>(cx);
2163 for selection in &mut selections {
2164 let head = selection.head().to_display_point(&display_map);
2165 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2166 selection.start = cursor.clone();
2167 selection.end = cursor;
2168 selection.reversed = false;
2169 selection.goal = SelectionGoal::None;
2170 }
2171 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2172 }
2173
2174 pub fn select_to_previous_word_boundary(
2175 &mut self,
2176 _: &SelectToPreviousWordBoundary,
2177 cx: &mut ViewContext<Self>,
2178 ) {
2179 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2180 let mut selections = self.local_selections::<Point>(cx);
2181 for selection in &mut selections {
2182 let head = selection.head().to_display_point(&display_map);
2183 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2184 selection.set_head(cursor);
2185 selection.goal = SelectionGoal::None;
2186 }
2187 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2188 }
2189
2190 pub fn delete_to_previous_word_boundary(
2191 &mut self,
2192 _: &DeleteToPreviousWordBoundary,
2193 cx: &mut ViewContext<Self>,
2194 ) {
2195 self.start_transaction(cx);
2196 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2197 let mut selections = self.local_selections::<Point>(cx);
2198 for selection in &mut selections {
2199 if selection.is_empty() {
2200 let head = selection.head().to_display_point(&display_map);
2201 let cursor =
2202 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2203 selection.set_head(cursor);
2204 selection.goal = SelectionGoal::None;
2205 }
2206 }
2207 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2208 self.insert("", cx);
2209 self.end_transaction(cx);
2210 }
2211
2212 pub fn move_to_next_word_boundary(
2213 &mut self,
2214 _: &MoveToNextWordBoundary,
2215 cx: &mut ViewContext<Self>,
2216 ) {
2217 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2218 let mut selections = self.local_selections::<Point>(cx);
2219 for selection in &mut selections {
2220 let head = selection.head().to_display_point(&display_map);
2221 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2222 selection.start = cursor;
2223 selection.end = cursor;
2224 selection.reversed = false;
2225 selection.goal = SelectionGoal::None;
2226 }
2227 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2228 }
2229
2230 pub fn select_to_next_word_boundary(
2231 &mut self,
2232 _: &SelectToNextWordBoundary,
2233 cx: &mut ViewContext<Self>,
2234 ) {
2235 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2236 let mut selections = self.local_selections::<Point>(cx);
2237 for selection in &mut selections {
2238 let head = selection.head().to_display_point(&display_map);
2239 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2240 selection.set_head(cursor);
2241 selection.goal = SelectionGoal::None;
2242 }
2243 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2244 }
2245
2246 pub fn delete_to_next_word_boundary(
2247 &mut self,
2248 _: &DeleteToNextWordBoundary,
2249 cx: &mut ViewContext<Self>,
2250 ) {
2251 self.start_transaction(cx);
2252 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2253 let mut selections = self.local_selections::<Point>(cx);
2254 for selection in &mut selections {
2255 if selection.is_empty() {
2256 let head = selection.head().to_display_point(&display_map);
2257 let cursor =
2258 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2259 selection.set_head(cursor);
2260 selection.goal = SelectionGoal::None;
2261 }
2262 }
2263 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2264 self.insert("", cx);
2265 self.end_transaction(cx);
2266 }
2267
2268 pub fn move_to_beginning_of_line(
2269 &mut self,
2270 _: &MoveToBeginningOfLine,
2271 cx: &mut ViewContext<Self>,
2272 ) {
2273 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2274 let mut selections = self.local_selections::<Point>(cx);
2275 for selection in &mut selections {
2276 let head = selection.head().to_display_point(&display_map);
2277 let new_head = movement::line_beginning(&display_map, head, true);
2278 let cursor = new_head.to_point(&display_map);
2279 selection.start = cursor;
2280 selection.end = cursor;
2281 selection.reversed = false;
2282 selection.goal = SelectionGoal::None;
2283 }
2284 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2285 }
2286
2287 pub fn select_to_beginning_of_line(
2288 &mut self,
2289 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2290 cx: &mut ViewContext<Self>,
2291 ) {
2292 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2293 let mut selections = self.local_selections::<Point>(cx);
2294 for selection in &mut selections {
2295 let head = selection.head().to_display_point(&display_map);
2296 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2297 selection.set_head(new_head.to_point(&display_map));
2298 selection.goal = SelectionGoal::None;
2299 }
2300 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2301 }
2302
2303 pub fn delete_to_beginning_of_line(
2304 &mut self,
2305 _: &DeleteToBeginningOfLine,
2306 cx: &mut ViewContext<Self>,
2307 ) {
2308 self.start_transaction(cx);
2309 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2310 self.backspace(&Backspace, cx);
2311 self.end_transaction(cx);
2312 }
2313
2314 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2315 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2316 let mut selections = self.local_selections::<Point>(cx);
2317 {
2318 for selection in &mut selections {
2319 let head = selection.head().to_display_point(&display_map);
2320 let new_head = movement::line_end(&display_map, head);
2321 let anchor = new_head.to_point(&display_map);
2322 selection.start = anchor.clone();
2323 selection.end = anchor;
2324 selection.reversed = false;
2325 selection.goal = SelectionGoal::None;
2326 }
2327 }
2328 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2329 }
2330
2331 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2332 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2333 let mut selections = self.local_selections::<Point>(cx);
2334 for selection in &mut selections {
2335 let head = selection.head().to_display_point(&display_map);
2336 let new_head = movement::line_end(&display_map, head);
2337 selection.set_head(new_head.to_point(&display_map));
2338 selection.goal = SelectionGoal::None;
2339 }
2340 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2341 }
2342
2343 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2344 self.start_transaction(cx);
2345 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2346 self.delete(&Delete, cx);
2347 self.end_transaction(cx);
2348 }
2349
2350 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2351 self.start_transaction(cx);
2352 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2353 self.cut(&Cut, cx);
2354 self.end_transaction(cx);
2355 }
2356
2357 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2358 let selection = Selection {
2359 id: post_inc(&mut self.next_selection_id),
2360 start: 0,
2361 end: 0,
2362 reversed: false,
2363 goal: SelectionGoal::None,
2364 };
2365 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2366 }
2367
2368 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2369 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2370 selection.set_head(Point::zero());
2371 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2372 }
2373
2374 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2375 let cursor = self.buffer.read(cx).read(cx).len();
2376 let selection = Selection {
2377 id: post_inc(&mut self.next_selection_id),
2378 start: cursor,
2379 end: cursor,
2380 reversed: false,
2381 goal: SelectionGoal::None,
2382 };
2383 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2384 }
2385
2386 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2387 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2388 selection.set_head(self.buffer.read(cx).read(cx).len());
2389 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2390 }
2391
2392 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2393 let selection = Selection {
2394 id: post_inc(&mut self.next_selection_id),
2395 start: 0,
2396 end: self.buffer.read(cx).read(cx).len(),
2397 reversed: false,
2398 goal: SelectionGoal::None,
2399 };
2400 self.update_selections(vec![selection], None, cx);
2401 }
2402
2403 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2404 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2405 let mut selections = self.local_selections::<Point>(cx);
2406 let max_point = display_map.buffer_snapshot.max_point();
2407 for selection in &mut selections {
2408 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2409 selection.start = Point::new(rows.start, 0);
2410 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2411 selection.reversed = false;
2412 }
2413 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2414 }
2415
2416 pub fn split_selection_into_lines(
2417 &mut self,
2418 _: &SplitSelectionIntoLines,
2419 cx: &mut ViewContext<Self>,
2420 ) {
2421 let mut to_unfold = Vec::new();
2422 let mut new_selections = Vec::new();
2423 {
2424 let selections = self.local_selections::<Point>(cx);
2425 let buffer = self.buffer.read(cx).read(cx);
2426 for selection in selections {
2427 for row in selection.start.row..selection.end.row {
2428 let cursor = Point::new(row, buffer.line_len(row));
2429 new_selections.push(Selection {
2430 id: post_inc(&mut self.next_selection_id),
2431 start: cursor,
2432 end: cursor,
2433 reversed: false,
2434 goal: SelectionGoal::None,
2435 });
2436 }
2437 new_selections.push(Selection {
2438 id: selection.id,
2439 start: selection.end,
2440 end: selection.end,
2441 reversed: false,
2442 goal: SelectionGoal::None,
2443 });
2444 to_unfold.push(selection.start..selection.end);
2445 }
2446 }
2447 self.unfold_ranges(to_unfold, cx);
2448 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2449 }
2450
2451 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2452 self.add_selection(true, cx);
2453 }
2454
2455 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2456 self.add_selection(false, cx);
2457 }
2458
2459 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2460 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2461 let mut selections = self.local_selections::<Point>(cx);
2462 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2463 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2464 let range = oldest_selection.display_range(&display_map).sorted();
2465 let columns = cmp::min(range.start.column(), range.end.column())
2466 ..cmp::max(range.start.column(), range.end.column());
2467
2468 selections.clear();
2469 let mut stack = Vec::new();
2470 for row in range.start.row()..=range.end.row() {
2471 if let Some(selection) = self.build_columnar_selection(
2472 &display_map,
2473 row,
2474 &columns,
2475 oldest_selection.reversed,
2476 ) {
2477 stack.push(selection.id);
2478 selections.push(selection);
2479 }
2480 }
2481
2482 if above {
2483 stack.reverse();
2484 }
2485
2486 AddSelectionsState { above, stack }
2487 });
2488
2489 let last_added_selection = *state.stack.last().unwrap();
2490 let mut new_selections = Vec::new();
2491 if above == state.above {
2492 let end_row = if above {
2493 0
2494 } else {
2495 display_map.max_point().row()
2496 };
2497
2498 'outer: for selection in selections {
2499 if selection.id == last_added_selection {
2500 let range = selection.display_range(&display_map).sorted();
2501 debug_assert_eq!(range.start.row(), range.end.row());
2502 let mut row = range.start.row();
2503 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2504 {
2505 start..end
2506 } else {
2507 cmp::min(range.start.column(), range.end.column())
2508 ..cmp::max(range.start.column(), range.end.column())
2509 };
2510
2511 while row != end_row {
2512 if above {
2513 row -= 1;
2514 } else {
2515 row += 1;
2516 }
2517
2518 if let Some(new_selection) = self.build_columnar_selection(
2519 &display_map,
2520 row,
2521 &columns,
2522 selection.reversed,
2523 ) {
2524 state.stack.push(new_selection.id);
2525 if above {
2526 new_selections.push(new_selection);
2527 new_selections.push(selection);
2528 } else {
2529 new_selections.push(selection);
2530 new_selections.push(new_selection);
2531 }
2532
2533 continue 'outer;
2534 }
2535 }
2536 }
2537
2538 new_selections.push(selection);
2539 }
2540 } else {
2541 new_selections = selections;
2542 new_selections.retain(|s| s.id != last_added_selection);
2543 state.stack.pop();
2544 }
2545
2546 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2547 if state.stack.len() > 1 {
2548 self.add_selections_state = Some(state);
2549 }
2550 }
2551
2552 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2553 let replace_newest = action.0;
2554 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2555 let buffer = &display_map.buffer_snapshot;
2556 let mut selections = self.local_selections::<usize>(cx);
2557 if let Some(mut select_next_state) = self.select_next_state.take() {
2558 let query = &select_next_state.query;
2559 if !select_next_state.done {
2560 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2561 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2562 let mut next_selected_range = None;
2563
2564 let bytes_after_last_selection =
2565 buffer.bytes_in_range(last_selection.end..buffer.len());
2566 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2567 let query_matches = query
2568 .stream_find_iter(bytes_after_last_selection)
2569 .map(|result| (last_selection.end, result))
2570 .chain(
2571 query
2572 .stream_find_iter(bytes_before_first_selection)
2573 .map(|result| (0, result)),
2574 );
2575 for (start_offset, query_match) in query_matches {
2576 let query_match = query_match.unwrap(); // can only fail due to I/O
2577 let offset_range =
2578 start_offset + query_match.start()..start_offset + query_match.end();
2579 let display_range = offset_range.start.to_display_point(&display_map)
2580 ..offset_range.end.to_display_point(&display_map);
2581
2582 if !select_next_state.wordwise
2583 || (!movement::is_inside_word(&display_map, display_range.start)
2584 && !movement::is_inside_word(&display_map, display_range.end))
2585 {
2586 next_selected_range = Some(offset_range);
2587 break;
2588 }
2589 }
2590
2591 if let Some(next_selected_range) = next_selected_range {
2592 if replace_newest {
2593 if let Some(newest_id) =
2594 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2595 {
2596 selections.retain(|s| s.id != newest_id);
2597 }
2598 }
2599 selections.push(Selection {
2600 id: post_inc(&mut self.next_selection_id),
2601 start: next_selected_range.start,
2602 end: next_selected_range.end,
2603 reversed: false,
2604 goal: SelectionGoal::None,
2605 });
2606 selections.sort_unstable_by_key(|s| s.start);
2607 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2608 } else {
2609 select_next_state.done = true;
2610 }
2611 }
2612
2613 self.select_next_state = Some(select_next_state);
2614 } else if selections.len() == 1 {
2615 let selection = selections.last_mut().unwrap();
2616 if selection.start == selection.end {
2617 let word_range = movement::surrounding_word(
2618 &display_map,
2619 selection.start.to_display_point(&display_map),
2620 );
2621 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2622 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2623 selection.goal = SelectionGoal::None;
2624 selection.reversed = false;
2625
2626 let query = buffer
2627 .text_for_range(selection.start..selection.end)
2628 .collect::<String>();
2629 let select_state = SelectNextState {
2630 query: AhoCorasick::new_auto_configured(&[query]),
2631 wordwise: true,
2632 done: false,
2633 };
2634 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2635 self.select_next_state = Some(select_state);
2636 } else {
2637 let query = buffer
2638 .text_for_range(selection.start..selection.end)
2639 .collect::<String>();
2640 self.select_next_state = Some(SelectNextState {
2641 query: AhoCorasick::new_auto_configured(&[query]),
2642 wordwise: false,
2643 done: false,
2644 });
2645 self.select_next(action, cx);
2646 }
2647 }
2648 }
2649
2650 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2651 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2652 // as that portion won't be used for detecting if a line is a comment.
2653 let full_comment_prefix =
2654 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2655 prefix.to_string()
2656 } else {
2657 return;
2658 };
2659 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2660 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2661
2662 self.start_transaction(cx);
2663 let mut selections = self.local_selections::<Point>(cx);
2664 let mut all_selection_lines_are_comments = true;
2665 let mut edit_ranges = Vec::new();
2666 let mut last_toggled_row = None;
2667 self.buffer.update(cx, |buffer, cx| {
2668 for selection in &mut selections {
2669 edit_ranges.clear();
2670 let snapshot = buffer.snapshot(cx);
2671
2672 let end_row =
2673 if selection.end.row > selection.start.row && selection.end.column == 0 {
2674 selection.end.row
2675 } else {
2676 selection.end.row + 1
2677 };
2678
2679 for row in selection.start.row..end_row {
2680 // If multiple selections contain a given row, avoid processing that
2681 // row more than once.
2682 if last_toggled_row == Some(row) {
2683 continue;
2684 } else {
2685 last_toggled_row = Some(row);
2686 }
2687
2688 if snapshot.is_line_blank(row) {
2689 continue;
2690 }
2691
2692 let start = Point::new(row, snapshot.indent_column_for_line(row));
2693 let mut line_bytes = snapshot
2694 .bytes_in_range(start..snapshot.max_point())
2695 .flatten()
2696 .copied();
2697
2698 // If this line currently begins with the line comment prefix, then record
2699 // the range containing the prefix.
2700 if all_selection_lines_are_comments
2701 && line_bytes
2702 .by_ref()
2703 .take(comment_prefix.len())
2704 .eq(comment_prefix.bytes())
2705 {
2706 // Include any whitespace that matches the comment prefix.
2707 let matching_whitespace_len = line_bytes
2708 .zip(comment_prefix_whitespace.bytes())
2709 .take_while(|(a, b)| a == b)
2710 .count() as u32;
2711 let end = Point::new(
2712 row,
2713 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2714 );
2715 edit_ranges.push(start..end);
2716 }
2717 // If this line does not begin with the line comment prefix, then record
2718 // the position where the prefix should be inserted.
2719 else {
2720 all_selection_lines_are_comments = false;
2721 edit_ranges.push(start..start);
2722 }
2723 }
2724
2725 if !edit_ranges.is_empty() {
2726 if all_selection_lines_are_comments {
2727 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2728 } else {
2729 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2730 let edit_ranges = edit_ranges.iter().map(|range| {
2731 let position = Point::new(range.start.row, min_column);
2732 position..position
2733 });
2734 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2735 }
2736 }
2737 }
2738 });
2739
2740 self.update_selections(
2741 self.local_selections::<usize>(cx),
2742 Some(Autoscroll::Fit),
2743 cx,
2744 );
2745 self.end_transaction(cx);
2746 }
2747
2748 pub fn select_larger_syntax_node(
2749 &mut self,
2750 _: &SelectLargerSyntaxNode,
2751 cx: &mut ViewContext<Self>,
2752 ) {
2753 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2754 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2755 let buffer = self.buffer.read(cx).snapshot(cx);
2756
2757 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2758 let mut selected_larger_node = false;
2759 let mut new_selections = old_selections
2760 .iter()
2761 .map(|selection| {
2762 let old_range = selection.start..selection.end;
2763 let mut new_range = old_range.clone();
2764 while let Some(containing_range) =
2765 buffer.range_for_syntax_ancestor(new_range.clone())
2766 {
2767 new_range = containing_range;
2768 if !display_map.intersects_fold(new_range.start)
2769 && !display_map.intersects_fold(new_range.end)
2770 {
2771 break;
2772 }
2773 }
2774
2775 selected_larger_node |= new_range != old_range;
2776 Selection {
2777 id: selection.id,
2778 start: new_range.start,
2779 end: new_range.end,
2780 goal: SelectionGoal::None,
2781 reversed: selection.reversed,
2782 }
2783 })
2784 .collect::<Vec<_>>();
2785
2786 if selected_larger_node {
2787 stack.push(old_selections);
2788 new_selections.sort_unstable_by_key(|selection| selection.start);
2789 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2790 }
2791 self.select_larger_syntax_node_stack = stack;
2792 }
2793
2794 pub fn select_smaller_syntax_node(
2795 &mut self,
2796 _: &SelectSmallerSyntaxNode,
2797 cx: &mut ViewContext<Self>,
2798 ) {
2799 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2800 if let Some(selections) = stack.pop() {
2801 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2802 }
2803 self.select_larger_syntax_node_stack = stack;
2804 }
2805
2806 pub fn move_to_enclosing_bracket(
2807 &mut self,
2808 _: &MoveToEnclosingBracket,
2809 cx: &mut ViewContext<Self>,
2810 ) {
2811 let mut selections = self.local_selections::<usize>(cx);
2812 let buffer = self.buffer.read(cx).snapshot(cx);
2813 for selection in &mut selections {
2814 if let Some((open_range, close_range)) =
2815 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2816 {
2817 let close_range = close_range.to_inclusive();
2818 let destination = if close_range.contains(&selection.start)
2819 && close_range.contains(&selection.end)
2820 {
2821 open_range.end
2822 } else {
2823 *close_range.start()
2824 };
2825 selection.start = destination;
2826 selection.end = destination;
2827 }
2828 }
2829
2830 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2831 }
2832
2833 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2834 let buffer = self.buffer.read(cx).snapshot(cx);
2835 let selection = self.newest_selection::<usize>(&buffer);
2836 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2837 active_diagnostics
2838 .primary_range
2839 .to_offset(&buffer)
2840 .to_inclusive()
2841 });
2842 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2843 if active_primary_range.contains(&selection.head()) {
2844 *active_primary_range.end()
2845 } else {
2846 selection.head()
2847 }
2848 } else {
2849 selection.head()
2850 };
2851
2852 loop {
2853 let next_group = buffer
2854 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2855 .find_map(|(provider_name, entry)| {
2856 if entry.diagnostic.is_primary
2857 && !entry.range.is_empty()
2858 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2859 {
2860 Some((provider_name, entry.range, entry.diagnostic.group_id))
2861 } else {
2862 None
2863 }
2864 });
2865
2866 if let Some((provider_name, primary_range, group_id)) = next_group {
2867 self.activate_diagnostics(provider_name, group_id, cx);
2868 self.update_selections(
2869 vec![Selection {
2870 id: selection.id,
2871 start: primary_range.start,
2872 end: primary_range.start,
2873 reversed: false,
2874 goal: SelectionGoal::None,
2875 }],
2876 Some(Autoscroll::Center),
2877 cx,
2878 );
2879 break;
2880 } else if search_start == 0 {
2881 break;
2882 } else {
2883 // Cycle around to the start of the buffer.
2884 search_start = 0;
2885 }
2886 }
2887 }
2888
2889 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2890 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2891 let buffer = self.buffer.read(cx).snapshot(cx);
2892 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2893 let is_valid = buffer
2894 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2895 .any(|(_, entry)| {
2896 entry.diagnostic.is_primary
2897 && !entry.range.is_empty()
2898 && entry.range.start == primary_range_start
2899 && entry.diagnostic.message == active_diagnostics.primary_message
2900 });
2901
2902 if is_valid != active_diagnostics.is_valid {
2903 active_diagnostics.is_valid = is_valid;
2904 let mut new_styles = HashMap::default();
2905 for (block_id, diagnostic) in &active_diagnostics.blocks {
2906 new_styles.insert(
2907 *block_id,
2908 diagnostic_block_renderer(
2909 diagnostic.clone(),
2910 is_valid,
2911 self.build_settings.clone(),
2912 ),
2913 );
2914 }
2915 self.display_map
2916 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2917 }
2918 }
2919 }
2920
2921 fn activate_diagnostics(
2922 &mut self,
2923 provider_name: &str,
2924 group_id: usize,
2925 cx: &mut ViewContext<Self>,
2926 ) {
2927 self.dismiss_diagnostics(cx);
2928 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2929 let buffer = self.buffer.read(cx).snapshot(cx);
2930
2931 let mut primary_range = None;
2932 let mut primary_message = None;
2933 let mut group_end = Point::zero();
2934 let diagnostic_group = buffer
2935 .diagnostic_group::<Point>(provider_name, group_id)
2936 .map(|entry| {
2937 if entry.range.end > group_end {
2938 group_end = entry.range.end;
2939 }
2940 if entry.diagnostic.is_primary {
2941 primary_range = Some(entry.range.clone());
2942 primary_message = Some(entry.diagnostic.message.clone());
2943 }
2944 entry
2945 })
2946 .collect::<Vec<_>>();
2947 let primary_range = primary_range.unwrap();
2948 let primary_message = primary_message.unwrap();
2949 let primary_range =
2950 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2951
2952 let blocks = display_map
2953 .insert_blocks(
2954 diagnostic_group.iter().map(|entry| {
2955 let build_settings = self.build_settings.clone();
2956 let diagnostic = entry.diagnostic.clone();
2957 let message_height = diagnostic.message.lines().count() as u8;
2958
2959 BlockProperties {
2960 position: entry.range.start,
2961 height: message_height,
2962 render: diagnostic_block_renderer(diagnostic, true, build_settings),
2963 disposition: BlockDisposition::Below,
2964 }
2965 }),
2966 cx,
2967 )
2968 .into_iter()
2969 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2970 .collect();
2971
2972 Some(ActiveDiagnosticGroup {
2973 primary_range,
2974 primary_message,
2975 blocks,
2976 is_valid: true,
2977 })
2978 });
2979 }
2980
2981 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2982 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2983 self.display_map.update(cx, |display_map, cx| {
2984 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2985 });
2986 cx.notify();
2987 }
2988 }
2989
2990 fn build_columnar_selection(
2991 &mut self,
2992 display_map: &DisplaySnapshot,
2993 row: u32,
2994 columns: &Range<u32>,
2995 reversed: bool,
2996 ) -> Option<Selection<Point>> {
2997 let is_empty = columns.start == columns.end;
2998 let line_len = display_map.line_len(row);
2999 if columns.start < line_len || (is_empty && columns.start == line_len) {
3000 let start = DisplayPoint::new(row, columns.start);
3001 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3002 Some(Selection {
3003 id: post_inc(&mut self.next_selection_id),
3004 start: start.to_point(display_map),
3005 end: end.to_point(display_map),
3006 reversed,
3007 goal: SelectionGoal::ColumnRange {
3008 start: columns.start,
3009 end: columns.end,
3010 },
3011 })
3012 } else {
3013 None
3014 }
3015 }
3016
3017 pub fn visible_selections<'a>(
3018 &'a self,
3019 display_rows: Range<u32>,
3020 cx: &'a mut MutableAppContext,
3021 ) -> HashMap<ReplicaId, Vec<Selection<DisplayPoint>>> {
3022 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3023 let buffer = &display_map.buffer_snapshot;
3024
3025 let start = if display_rows.start == 0 {
3026 Anchor::min()
3027 } else {
3028 buffer.anchor_before(
3029 DisplayPoint::new(display_rows.start, 0).to_offset(&display_map, Bias::Left),
3030 )
3031 };
3032 let end = if display_rows.end > display_map.max_point().row() {
3033 Anchor::max()
3034 } else {
3035 buffer.anchor_before(
3036 DisplayPoint::new(display_rows.end, 0).to_offset(&display_map, Bias::Right),
3037 )
3038 };
3039
3040 let start_ix = match self
3041 .selections
3042 .binary_search_by(|probe| probe.end.cmp(&start, &buffer).unwrap())
3043 {
3044 Ok(ix) | Err(ix) => ix,
3045 };
3046 let end_ix = match self
3047 .selections
3048 .binary_search_by(|probe| probe.start.cmp(&end, &buffer).unwrap())
3049 {
3050 Ok(ix) => ix + 1,
3051 Err(ix) => ix,
3052 };
3053
3054 fn display_selection(
3055 selection: &Selection<Anchor>,
3056 display_map: &DisplaySnapshot,
3057 ) -> Selection<DisplayPoint> {
3058 Selection {
3059 id: selection.id,
3060 start: selection.start.to_display_point(&display_map),
3061 end: selection.end.to_display_point(&display_map),
3062 reversed: selection.reversed,
3063 goal: selection.goal,
3064 }
3065 }
3066
3067 let mut result = HashMap::default();
3068
3069 result.insert(
3070 self.replica_id(cx),
3071 self.selections[start_ix..end_ix]
3072 .iter()
3073 .chain(
3074 self.pending_selection
3075 .as_ref()
3076 .map(|pending| &pending.selection),
3077 )
3078 .map(|s| display_selection(s, &display_map))
3079 .collect(),
3080 );
3081
3082 for (replica_id, selection) in display_map
3083 .buffer_snapshot
3084 .remote_selections_in_range(&(start..end))
3085 {
3086 result
3087 .entry(replica_id)
3088 .or_insert(Vec::new())
3089 .push(display_selection(&selection, &display_map));
3090 }
3091
3092 result
3093 }
3094
3095 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3096 where
3097 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3098 {
3099 let buffer = self.buffer.read(cx).snapshot(cx);
3100 let mut selections = self
3101 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3102 .peekable();
3103
3104 let mut pending_selection = self.pending_selection::<D>(&buffer);
3105
3106 iter::from_fn(move || {
3107 if let Some(pending) = pending_selection.as_mut() {
3108 while let Some(next_selection) = selections.peek() {
3109 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3110 let next_selection = selections.next().unwrap();
3111 if next_selection.start < pending.start {
3112 pending.start = next_selection.start;
3113 }
3114 if next_selection.end > pending.end {
3115 pending.end = next_selection.end;
3116 }
3117 } else if next_selection.end < pending.start {
3118 return selections.next();
3119 } else {
3120 break;
3121 }
3122 }
3123
3124 pending_selection.take()
3125 } else {
3126 selections.next()
3127 }
3128 })
3129 .collect()
3130 }
3131
3132 pub fn local_anchor_selections(&self) -> &Arc<[Selection<Anchor>]> {
3133 &self.selections
3134 }
3135
3136 fn resolve_selections<'a, D, I>(
3137 &self,
3138 selections: I,
3139 snapshot: &MultiBufferSnapshot,
3140 ) -> impl 'a + Iterator<Item = Selection<D>>
3141 where
3142 D: TextDimension + Ord + Sub<D, Output = D>,
3143 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3144 {
3145 let (to_summarize, selections) = selections.into_iter().tee();
3146 let mut summaries = snapshot
3147 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3148 .into_iter();
3149 selections.map(move |s| Selection {
3150 id: s.id,
3151 start: summaries.next().unwrap(),
3152 end: summaries.next().unwrap(),
3153 reversed: s.reversed,
3154 goal: s.goal,
3155 })
3156 }
3157
3158 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3159 &self,
3160 snapshot: &MultiBufferSnapshot,
3161 ) -> Option<Selection<D>> {
3162 self.pending_selection
3163 .as_ref()
3164 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3165 }
3166
3167 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3168 &self,
3169 selection: &Selection<Anchor>,
3170 buffer: &MultiBufferSnapshot,
3171 ) -> Selection<D> {
3172 Selection {
3173 id: selection.id,
3174 start: selection.start.summary::<D>(&buffer),
3175 end: selection.end.summary::<D>(&buffer),
3176 reversed: selection.reversed,
3177 goal: selection.goal,
3178 }
3179 }
3180
3181 fn selection_count<'a>(&self) -> usize {
3182 let mut count = self.selections.len();
3183 if self.pending_selection.is_some() {
3184 count += 1;
3185 }
3186 count
3187 }
3188
3189 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3190 &self,
3191 snapshot: &MultiBufferSnapshot,
3192 ) -> Selection<D> {
3193 self.selections
3194 .iter()
3195 .min_by_key(|s| s.id)
3196 .map(|selection| self.resolve_selection(selection, snapshot))
3197 .or_else(|| self.pending_selection(snapshot))
3198 .unwrap()
3199 }
3200
3201 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3202 &self,
3203 snapshot: &MultiBufferSnapshot,
3204 ) -> Selection<D> {
3205 self.pending_selection(snapshot)
3206 .or_else(|| {
3207 self.selections
3208 .iter()
3209 .max_by_key(|s| s.id)
3210 .map(|selection| self.resolve_selection(selection, snapshot))
3211 })
3212 .unwrap()
3213 }
3214
3215 pub fn update_selections<T>(
3216 &mut self,
3217 mut selections: Vec<Selection<T>>,
3218 autoscroll: Option<Autoscroll>,
3219 cx: &mut ViewContext<Self>,
3220 ) where
3221 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3222 {
3223 // Merge overlapping selections.
3224 let buffer = self.buffer.read(cx).snapshot(cx);
3225 let mut i = 1;
3226 while i < selections.len() {
3227 if selections[i - 1].end >= selections[i].start {
3228 let removed = selections.remove(i);
3229 if removed.start < selections[i - 1].start {
3230 selections[i - 1].start = removed.start;
3231 }
3232 if removed.end > selections[i - 1].end {
3233 selections[i - 1].end = removed.end;
3234 }
3235 } else {
3236 i += 1;
3237 }
3238 }
3239
3240 self.pending_selection = None;
3241 self.add_selections_state = None;
3242 self.select_next_state = None;
3243 self.select_larger_syntax_node_stack.clear();
3244 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3245 let all_selections_inside_autoclose_ranges =
3246 if selections.len() == autoclose_pair.ranges.len() {
3247 selections
3248 .iter()
3249 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3250 .all(|(selection, autoclose_range)| {
3251 let head = selection.head().to_point(&buffer);
3252 autoclose_range.start <= head && autoclose_range.end >= head
3253 })
3254 } else {
3255 false
3256 };
3257
3258 if all_selections_inside_autoclose_ranges {
3259 break;
3260 } else {
3261 self.autoclose_stack.pop();
3262 }
3263 }
3264
3265 if let Some(autoscroll) = autoscroll {
3266 self.request_autoscroll(autoscroll, cx);
3267 }
3268 self.pause_cursor_blinking(cx);
3269
3270 self.set_selections(
3271 Arc::from_iter(selections.into_iter().map(|selection| {
3272 let end_bias = if selection.end > selection.start {
3273 Bias::Left
3274 } else {
3275 Bias::Right
3276 };
3277 Selection {
3278 id: selection.id,
3279 start: buffer.anchor_after(selection.start),
3280 end: buffer.anchor_at(selection.end, end_bias),
3281 reversed: selection.reversed,
3282 goal: selection.goal,
3283 }
3284 })),
3285 cx,
3286 );
3287 }
3288
3289 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3290 self.selections = selections;
3291 self.buffer.update(cx, |buffer, cx| {
3292 buffer.set_active_selections(&self.selections, cx)
3293 });
3294 }
3295
3296 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3297 self.autoscroll_request = Some(autoscroll);
3298 cx.notify();
3299 }
3300
3301 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3302 self.start_transaction_at(Instant::now(), cx);
3303 }
3304
3305 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3306 self.end_selection(cx);
3307 if let Some(tx_id) = self
3308 .buffer
3309 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3310 {
3311 self.selection_history
3312 .insert(tx_id, (self.selections.clone(), None));
3313 }
3314 }
3315
3316 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3317 self.end_transaction_at(Instant::now(), cx);
3318 }
3319
3320 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3321 if let Some(tx_id) = self
3322 .buffer
3323 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3324 {
3325 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3326 }
3327 }
3328
3329 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3330 log::info!("Editor::page_up");
3331 }
3332
3333 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3334 log::info!("Editor::page_down");
3335 }
3336
3337 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3338 let mut fold_ranges = Vec::new();
3339
3340 let selections = self.local_selections::<Point>(cx);
3341 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3342 for selection in selections {
3343 let range = selection.display_range(&display_map).sorted();
3344 let buffer_start_row = range.start.to_point(&display_map).row;
3345
3346 for row in (0..=range.end.row()).rev() {
3347 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3348 let fold_range = self.foldable_range_for_line(&display_map, row);
3349 if fold_range.end.row >= buffer_start_row {
3350 fold_ranges.push(fold_range);
3351 if row <= range.start.row() {
3352 break;
3353 }
3354 }
3355 }
3356 }
3357 }
3358
3359 self.fold_ranges(fold_ranges, cx);
3360 }
3361
3362 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3363 let selections = self.local_selections::<Point>(cx);
3364 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3365 let buffer = &display_map.buffer_snapshot;
3366 let ranges = selections
3367 .iter()
3368 .map(|s| {
3369 let range = s.display_range(&display_map).sorted();
3370 let mut start = range.start.to_point(&display_map);
3371 let mut end = range.end.to_point(&display_map);
3372 start.column = 0;
3373 end.column = buffer.line_len(end.row);
3374 start..end
3375 })
3376 .collect::<Vec<_>>();
3377 self.unfold_ranges(ranges, cx);
3378 }
3379
3380 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3381 let max_point = display_map.max_point();
3382 if display_row >= max_point.row() {
3383 false
3384 } else {
3385 let (start_indent, is_blank) = display_map.line_indent(display_row);
3386 if is_blank {
3387 false
3388 } else {
3389 for display_row in display_row + 1..=max_point.row() {
3390 let (indent, is_blank) = display_map.line_indent(display_row);
3391 if !is_blank {
3392 return indent > start_indent;
3393 }
3394 }
3395 false
3396 }
3397 }
3398 }
3399
3400 fn foldable_range_for_line(
3401 &self,
3402 display_map: &DisplaySnapshot,
3403 start_row: u32,
3404 ) -> Range<Point> {
3405 let max_point = display_map.max_point();
3406
3407 let (start_indent, _) = display_map.line_indent(start_row);
3408 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3409 let mut end = None;
3410 for row in start_row + 1..=max_point.row() {
3411 let (indent, is_blank) = display_map.line_indent(row);
3412 if !is_blank && indent <= start_indent {
3413 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3414 break;
3415 }
3416 }
3417
3418 let end = end.unwrap_or(max_point);
3419 return start.to_point(display_map)..end.to_point(display_map);
3420 }
3421
3422 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3423 let selections = self.local_selections::<Point>(cx);
3424 let ranges = selections.into_iter().map(|s| s.start..s.end);
3425 self.fold_ranges(ranges, cx);
3426 }
3427
3428 fn fold_ranges<T: ToOffset>(
3429 &mut self,
3430 ranges: impl IntoIterator<Item = Range<T>>,
3431 cx: &mut ViewContext<Self>,
3432 ) {
3433 let mut ranges = ranges.into_iter().peekable();
3434 if ranges.peek().is_some() {
3435 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3436 self.request_autoscroll(Autoscroll::Fit, cx);
3437 cx.notify();
3438 }
3439 }
3440
3441 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3442 if !ranges.is_empty() {
3443 self.display_map
3444 .update(cx, |map, cx| map.unfold(ranges, cx));
3445 self.request_autoscroll(Autoscroll::Fit, cx);
3446 cx.notify();
3447 }
3448 }
3449
3450 pub fn insert_blocks<P>(
3451 &mut self,
3452 blocks: impl IntoIterator<Item = BlockProperties<P>>,
3453 cx: &mut ViewContext<Self>,
3454 ) -> Vec<BlockId>
3455 where
3456 P: ToOffset + Clone,
3457 {
3458 let blocks = self
3459 .display_map
3460 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3461 self.request_autoscroll(Autoscroll::Fit, cx);
3462 blocks
3463 }
3464
3465 pub fn replace_blocks(
3466 &mut self,
3467 blocks: HashMap<BlockId, RenderBlock>,
3468 cx: &mut ViewContext<Self>,
3469 ) {
3470 self.display_map
3471 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3472 self.request_autoscroll(Autoscroll::Fit, cx);
3473 }
3474
3475 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3476 self.display_map.update(cx, |display_map, cx| {
3477 display_map.remove_blocks(block_ids, cx)
3478 });
3479 }
3480
3481 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3482 self.display_map
3483 .update(cx, |map, cx| map.snapshot(cx))
3484 .longest_row()
3485 }
3486
3487 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3488 self.display_map
3489 .update(cx, |map, cx| map.snapshot(cx))
3490 .max_point()
3491 }
3492
3493 pub fn text(&self, cx: &AppContext) -> String {
3494 self.buffer.read(cx).read(cx).text()
3495 }
3496
3497 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3498 self.display_map
3499 .update(cx, |map, cx| map.snapshot(cx))
3500 .text()
3501 }
3502
3503 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3504 self.display_map
3505 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3506 }
3507
3508 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3509 self.highlighted_row = row;
3510 }
3511
3512 pub fn highlighted_row(&mut self) -> Option<u32> {
3513 self.highlighted_row
3514 }
3515
3516 fn next_blink_epoch(&mut self) -> usize {
3517 self.blink_epoch += 1;
3518 self.blink_epoch
3519 }
3520
3521 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3522 self.show_local_cursors = true;
3523 cx.notify();
3524
3525 let epoch = self.next_blink_epoch();
3526 cx.spawn(|this, mut cx| {
3527 let this = this.downgrade();
3528 async move {
3529 Timer::after(CURSOR_BLINK_INTERVAL).await;
3530 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3531 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3532 }
3533 }
3534 })
3535 .detach();
3536 }
3537
3538 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3539 if epoch == self.blink_epoch {
3540 self.blinking_paused = false;
3541 self.blink_cursors(epoch, cx);
3542 }
3543 }
3544
3545 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3546 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3547 self.show_local_cursors = !self.show_local_cursors;
3548 cx.notify();
3549
3550 let epoch = self.next_blink_epoch();
3551 cx.spawn(|this, mut cx| {
3552 let this = this.downgrade();
3553 async move {
3554 Timer::after(CURSOR_BLINK_INTERVAL).await;
3555 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3556 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3557 }
3558 }
3559 })
3560 .detach();
3561 }
3562 }
3563
3564 pub fn show_local_cursors(&self) -> bool {
3565 self.show_local_cursors
3566 }
3567
3568 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3569 self.refresh_active_diagnostics(cx);
3570 cx.notify();
3571 }
3572
3573 fn on_buffer_event(
3574 &mut self,
3575 _: ModelHandle<MultiBuffer>,
3576 event: &language::Event,
3577 cx: &mut ViewContext<Self>,
3578 ) {
3579 match event {
3580 language::Event::Edited => cx.emit(Event::Edited),
3581 language::Event::Dirtied => cx.emit(Event::Dirtied),
3582 language::Event::Saved => cx.emit(Event::Saved),
3583 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3584 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3585 language::Event::Closed => cx.emit(Event::Closed),
3586 _ => {}
3587 }
3588 }
3589
3590 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3591 cx.notify();
3592 }
3593}
3594
3595impl EditorSnapshot {
3596 pub fn is_focused(&self) -> bool {
3597 self.is_focused
3598 }
3599
3600 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3601 self.placeholder_text.as_ref()
3602 }
3603
3604 pub fn scroll_position(&self) -> Vector2F {
3605 compute_scroll_position(
3606 &self.display_snapshot,
3607 self.scroll_position,
3608 &self.scroll_top_anchor,
3609 )
3610 }
3611}
3612
3613impl Deref for EditorSnapshot {
3614 type Target = DisplaySnapshot;
3615
3616 fn deref(&self) -> &Self::Target {
3617 &self.display_snapshot
3618 }
3619}
3620
3621impl EditorSettings {
3622 #[cfg(any(test, feature = "test-support"))]
3623 pub fn test(cx: &AppContext) -> Self {
3624 Self {
3625 tab_size: 4,
3626 soft_wrap: SoftWrap::None,
3627 style: {
3628 let font_cache: &gpui::FontCache = cx.font_cache();
3629 let font_family_name = Arc::from("Monaco");
3630 let font_properties = Default::default();
3631 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3632 let font_id = font_cache
3633 .select_font(font_family_id, &font_properties)
3634 .unwrap();
3635 EditorStyle {
3636 text: gpui::fonts::TextStyle {
3637 font_family_name,
3638 font_family_id,
3639 font_id,
3640 font_size: 14.,
3641 color: gpui::color::Color::from_u32(0xff0000ff),
3642 font_properties,
3643 underline: None,
3644 },
3645 placeholder_text: None,
3646 background: Default::default(),
3647 gutter_background: Default::default(),
3648 active_line_background: Default::default(),
3649 highlighted_line_background: Default::default(),
3650 line_number: Default::default(),
3651 line_number_active: Default::default(),
3652 selection: Default::default(),
3653 guest_selections: Default::default(),
3654 syntax: Default::default(),
3655 error_diagnostic: Default::default(),
3656 invalid_error_diagnostic: Default::default(),
3657 warning_diagnostic: Default::default(),
3658 invalid_warning_diagnostic: Default::default(),
3659 information_diagnostic: Default::default(),
3660 invalid_information_diagnostic: Default::default(),
3661 hint_diagnostic: Default::default(),
3662 invalid_hint_diagnostic: Default::default(),
3663 }
3664 },
3665 }
3666 }
3667}
3668
3669fn compute_scroll_position(
3670 snapshot: &DisplaySnapshot,
3671 mut scroll_position: Vector2F,
3672 scroll_top_anchor: &Anchor,
3673) -> Vector2F {
3674 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3675 scroll_position.set_y(scroll_top + scroll_position.y());
3676 scroll_position
3677}
3678
3679#[derive(Copy, Clone)]
3680pub enum Event {
3681 Activate,
3682 Edited,
3683 Blurred,
3684 Dirtied,
3685 Saved,
3686 FileHandleChanged,
3687 Closed,
3688}
3689
3690impl Entity for Editor {
3691 type Event = Event;
3692}
3693
3694impl View for Editor {
3695 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3696 let settings = (self.build_settings)(cx);
3697 self.display_map.update(cx, |map, cx| {
3698 map.set_font(
3699 settings.style.text.font_id,
3700 settings.style.text.font_size,
3701 cx,
3702 )
3703 });
3704 EditorElement::new(self.handle.clone(), settings).boxed()
3705 }
3706
3707 fn ui_name() -> &'static str {
3708 "Editor"
3709 }
3710
3711 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3712 self.focused = true;
3713 self.blink_cursors(self.blink_epoch, cx);
3714 self.buffer.update(cx, |buffer, cx| {
3715 buffer.set_active_selections(&self.selections, cx)
3716 });
3717 }
3718
3719 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3720 self.focused = false;
3721 self.show_local_cursors = false;
3722 self.buffer
3723 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3724 cx.emit(Event::Blurred);
3725 cx.notify();
3726 }
3727
3728 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3729 let mut cx = Self::default_keymap_context();
3730 let mode = match self.mode {
3731 EditorMode::SingleLine => "single_line",
3732 EditorMode::AutoHeight { .. } => "auto_height",
3733 EditorMode::Full => "full",
3734 };
3735 cx.map.insert("mode".into(), mode.into());
3736 cx
3737 }
3738}
3739
3740impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3741 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3742 let start = self.start.to_point(buffer);
3743 let end = self.end.to_point(buffer);
3744 if self.reversed {
3745 end..start
3746 } else {
3747 start..end
3748 }
3749 }
3750
3751 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3752 let start = self.start.to_offset(buffer);
3753 let end = self.end.to_offset(buffer);
3754 if self.reversed {
3755 end..start
3756 } else {
3757 start..end
3758 }
3759 }
3760
3761 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3762 let start = self
3763 .start
3764 .to_point(&map.buffer_snapshot)
3765 .to_display_point(map);
3766 let end = self
3767 .end
3768 .to_point(&map.buffer_snapshot)
3769 .to_display_point(map);
3770 if self.reversed {
3771 end..start
3772 } else {
3773 start..end
3774 }
3775 }
3776
3777 fn spanned_rows(
3778 &self,
3779 include_end_if_at_line_start: bool,
3780 map: &DisplaySnapshot,
3781 ) -> SpannedRows {
3782 let display_start = self
3783 .start
3784 .to_point(&map.buffer_snapshot)
3785 .to_display_point(map);
3786 let mut display_end = self
3787 .end
3788 .to_point(&map.buffer_snapshot)
3789 .to_display_point(map);
3790 if !include_end_if_at_line_start
3791 && display_end.row() != map.max_point().row()
3792 && display_start.row() != display_end.row()
3793 && display_end.column() == 0
3794 {
3795 *display_end.row_mut() -= 1;
3796 }
3797
3798 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3799 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3800
3801 SpannedRows {
3802 buffer_rows: buffer_start.row..buffer_end.row + 1,
3803 display_rows: display_start.row()..display_end.row() + 1,
3804 }
3805 }
3806}
3807
3808pub fn diagnostic_block_renderer(
3809 diagnostic: Diagnostic,
3810 is_valid: bool,
3811 build_settings: BuildSettings,
3812) -> RenderBlock {
3813 Arc::new(move |cx: &BlockContext| {
3814 let settings = build_settings(cx);
3815 let mut text_style = settings.style.text.clone();
3816 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3817 Text::new(diagnostic.message.clone(), text_style)
3818 .contained()
3819 .with_margin_left(cx.anchor_x)
3820 .boxed()
3821 })
3822}
3823
3824pub fn diagnostic_header_renderer(
3825 buffer: ModelHandle<Buffer>,
3826 diagnostic: Diagnostic,
3827 is_valid: bool,
3828 build_settings: BuildSettings,
3829) -> RenderBlock {
3830 Arc::new(move |cx| {
3831 let settings = build_settings(cx);
3832 let mut text_style = settings.style.text.clone();
3833 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3834 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3835 file.path().to_string_lossy().to_string()
3836 } else {
3837 "untitled".to_string()
3838 };
3839
3840 Flex::column()
3841 .with_child(Label::new(diagnostic.message.clone(), text_style).boxed())
3842 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3843 .boxed()
3844 })
3845}
3846
3847pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3848 Arc::new(move |cx| {
3849 let settings = build_settings(cx);
3850 let text_style = settings.style.text.clone();
3851 Label::new("...".to_string(), text_style).boxed()
3852 })
3853}
3854
3855pub fn diagnostic_style(
3856 severity: DiagnosticSeverity,
3857 valid: bool,
3858 style: &EditorStyle,
3859) -> DiagnosticStyle {
3860 match (severity, valid) {
3861 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3862 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3863 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3864 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3865 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3866 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3867 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3868 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3869 _ => Default::default(),
3870 }
3871}
3872
3873pub fn settings_builder(
3874 buffer: WeakModelHandle<MultiBuffer>,
3875 settings: watch::Receiver<workspace::Settings>,
3876) -> BuildSettings {
3877 Arc::new(move |cx| {
3878 let settings = settings.borrow();
3879 let font_cache = cx.font_cache();
3880 let font_family_id = settings.buffer_font_family;
3881 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3882 let font_properties = Default::default();
3883 let font_id = font_cache
3884 .select_font(font_family_id, &font_properties)
3885 .unwrap();
3886 let font_size = settings.buffer_font_size;
3887
3888 let mut theme = settings.theme.editor.clone();
3889 theme.text = TextStyle {
3890 color: theme.text.color,
3891 font_family_name,
3892 font_family_id,
3893 font_id,
3894 font_size,
3895 font_properties,
3896 underline: None,
3897 };
3898 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3899 let soft_wrap = match settings.soft_wrap(language) {
3900 workspace::settings::SoftWrap::None => SoftWrap::None,
3901 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3902 workspace::settings::SoftWrap::PreferredLineLength => {
3903 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3904 }
3905 };
3906
3907 EditorSettings {
3908 tab_size: settings.tab_size,
3909 soft_wrap,
3910 style: theme,
3911 }
3912 })
3913}
3914
3915#[cfg(test)]
3916mod tests {
3917 use super::*;
3918 use language::LanguageConfig;
3919 use std::time::Instant;
3920 use text::Point;
3921 use unindent::Unindent;
3922 use util::test::sample_text;
3923
3924 #[gpui::test]
3925 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3926 let mut now = Instant::now();
3927 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3928 let group_interval = buffer.read(cx).transaction_group_interval();
3929 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3930 let settings = EditorSettings::test(cx);
3931 let (_, editor) = cx.add_window(Default::default(), |cx| {
3932 build_editor(buffer.clone(), settings, cx)
3933 });
3934
3935 editor.update(cx, |editor, cx| {
3936 editor.start_transaction_at(now, cx);
3937 editor.select_ranges([2..4], None, cx);
3938 editor.insert("cd", cx);
3939 editor.end_transaction_at(now, cx);
3940 assert_eq!(editor.text(cx), "12cd56");
3941 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3942
3943 editor.start_transaction_at(now, cx);
3944 editor.select_ranges([4..5], None, cx);
3945 editor.insert("e", cx);
3946 editor.end_transaction_at(now, cx);
3947 assert_eq!(editor.text(cx), "12cde6");
3948 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3949
3950 now += group_interval + Duration::from_millis(1);
3951 editor.select_ranges([2..2], None, cx);
3952
3953 // Simulate an edit in another editor
3954 buffer.update(cx, |buffer, cx| {
3955 buffer.start_transaction_at(now, cx);
3956 buffer.edit([0..1], "a", cx);
3957 buffer.edit([1..1], "b", cx);
3958 buffer.end_transaction_at(now, cx);
3959 });
3960
3961 assert_eq!(editor.text(cx), "ab2cde6");
3962 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3963
3964 // Last transaction happened past the group interval in a different editor.
3965 // Undo it individually and don't restore selections.
3966 editor.undo(&Undo, cx);
3967 assert_eq!(editor.text(cx), "12cde6");
3968 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3969
3970 // First two transactions happened within the group interval in this editor.
3971 // Undo them together and restore selections.
3972 editor.undo(&Undo, cx);
3973 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3974 assert_eq!(editor.text(cx), "123456");
3975 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3976
3977 // Redo the first two transactions together.
3978 editor.redo(&Redo, cx);
3979 assert_eq!(editor.text(cx), "12cde6");
3980 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3981
3982 // Redo the last transaction on its own.
3983 editor.redo(&Redo, cx);
3984 assert_eq!(editor.text(cx), "ab2cde6");
3985 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
3986
3987 // Test empty transactions.
3988 editor.start_transaction_at(now, cx);
3989 editor.end_transaction_at(now, cx);
3990 editor.undo(&Undo, cx);
3991 assert_eq!(editor.text(cx), "12cde6");
3992 });
3993 }
3994
3995 #[gpui::test]
3996 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3997 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3998 let settings = EditorSettings::test(cx);
3999 let (_, editor) =
4000 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4001
4002 editor.update(cx, |view, cx| {
4003 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4004 });
4005
4006 assert_eq!(
4007 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4008 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4009 );
4010
4011 editor.update(cx, |view, cx| {
4012 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4013 });
4014
4015 assert_eq!(
4016 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4017 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4018 );
4019
4020 editor.update(cx, |view, cx| {
4021 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4022 });
4023
4024 assert_eq!(
4025 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4026 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4027 );
4028
4029 editor.update(cx, |view, cx| {
4030 view.end_selection(cx);
4031 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4032 });
4033
4034 assert_eq!(
4035 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4036 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4037 );
4038
4039 editor.update(cx, |view, cx| {
4040 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4041 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4042 });
4043
4044 assert_eq!(
4045 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4046 [
4047 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4048 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4049 ]
4050 );
4051
4052 editor.update(cx, |view, cx| {
4053 view.end_selection(cx);
4054 });
4055
4056 assert_eq!(
4057 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4058 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4059 );
4060 }
4061
4062 #[gpui::test]
4063 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4064 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4065 let settings = EditorSettings::test(cx);
4066 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4067
4068 view.update(cx, |view, cx| {
4069 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4070 assert_eq!(
4071 view.selected_display_ranges(cx),
4072 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4073 );
4074 });
4075
4076 view.update(cx, |view, cx| {
4077 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4078 assert_eq!(
4079 view.selected_display_ranges(cx),
4080 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4081 );
4082 });
4083
4084 view.update(cx, |view, cx| {
4085 view.cancel(&Cancel, cx);
4086 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4087 assert_eq!(
4088 view.selected_display_ranges(cx),
4089 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4090 );
4091 });
4092 }
4093
4094 #[gpui::test]
4095 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4096 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4097 let settings = EditorSettings::test(cx);
4098 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4099
4100 view.update(cx, |view, cx| {
4101 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4102 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4103 view.end_selection(cx);
4104
4105 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4106 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4107 view.end_selection(cx);
4108 assert_eq!(
4109 view.selected_display_ranges(cx),
4110 [
4111 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4112 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4113 ]
4114 );
4115 });
4116
4117 view.update(cx, |view, cx| {
4118 view.cancel(&Cancel, cx);
4119 assert_eq!(
4120 view.selected_display_ranges(cx),
4121 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4122 );
4123 });
4124
4125 view.update(cx, |view, cx| {
4126 view.cancel(&Cancel, cx);
4127 assert_eq!(
4128 view.selected_display_ranges(cx),
4129 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4130 );
4131 });
4132 }
4133
4134 #[gpui::test]
4135 fn test_fold(cx: &mut gpui::MutableAppContext) {
4136 let buffer = MultiBuffer::build_simple(
4137 &"
4138 impl Foo {
4139 // Hello!
4140
4141 fn a() {
4142 1
4143 }
4144
4145 fn b() {
4146 2
4147 }
4148
4149 fn c() {
4150 3
4151 }
4152 }
4153 "
4154 .unindent(),
4155 cx,
4156 );
4157 let settings = EditorSettings::test(&cx);
4158 let (_, view) = cx.add_window(Default::default(), |cx| {
4159 build_editor(buffer.clone(), settings, cx)
4160 });
4161
4162 view.update(cx, |view, cx| {
4163 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4164 .unwrap();
4165 view.fold(&Fold, cx);
4166 assert_eq!(
4167 view.display_text(cx),
4168 "
4169 impl Foo {
4170 // Hello!
4171
4172 fn a() {
4173 1
4174 }
4175
4176 fn b() {…
4177 }
4178
4179 fn c() {…
4180 }
4181 }
4182 "
4183 .unindent(),
4184 );
4185
4186 view.fold(&Fold, cx);
4187 assert_eq!(
4188 view.display_text(cx),
4189 "
4190 impl Foo {…
4191 }
4192 "
4193 .unindent(),
4194 );
4195
4196 view.unfold(&Unfold, cx);
4197 assert_eq!(
4198 view.display_text(cx),
4199 "
4200 impl Foo {
4201 // Hello!
4202
4203 fn a() {
4204 1
4205 }
4206
4207 fn b() {…
4208 }
4209
4210 fn c() {…
4211 }
4212 }
4213 "
4214 .unindent(),
4215 );
4216
4217 view.unfold(&Unfold, cx);
4218 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4219 });
4220 }
4221
4222 #[gpui::test]
4223 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4224 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4225 let settings = EditorSettings::test(&cx);
4226 let (_, view) = cx.add_window(Default::default(), |cx| {
4227 build_editor(buffer.clone(), settings, cx)
4228 });
4229
4230 buffer.update(cx, |buffer, cx| {
4231 buffer.edit(
4232 vec![
4233 Point::new(1, 0)..Point::new(1, 0),
4234 Point::new(1, 1)..Point::new(1, 1),
4235 ],
4236 "\t",
4237 cx,
4238 );
4239 });
4240
4241 view.update(cx, |view, cx| {
4242 assert_eq!(
4243 view.selected_display_ranges(cx),
4244 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4245 );
4246
4247 view.move_down(&MoveDown, cx);
4248 assert_eq!(
4249 view.selected_display_ranges(cx),
4250 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4251 );
4252
4253 view.move_right(&MoveRight, cx);
4254 assert_eq!(
4255 view.selected_display_ranges(cx),
4256 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4257 );
4258
4259 view.move_left(&MoveLeft, cx);
4260 assert_eq!(
4261 view.selected_display_ranges(cx),
4262 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4263 );
4264
4265 view.move_up(&MoveUp, cx);
4266 assert_eq!(
4267 view.selected_display_ranges(cx),
4268 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4269 );
4270
4271 view.move_to_end(&MoveToEnd, cx);
4272 assert_eq!(
4273 view.selected_display_ranges(cx),
4274 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4275 );
4276
4277 view.move_to_beginning(&MoveToBeginning, cx);
4278 assert_eq!(
4279 view.selected_display_ranges(cx),
4280 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4281 );
4282
4283 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4284 .unwrap();
4285 view.select_to_beginning(&SelectToBeginning, cx);
4286 assert_eq!(
4287 view.selected_display_ranges(cx),
4288 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4289 );
4290
4291 view.select_to_end(&SelectToEnd, cx);
4292 assert_eq!(
4293 view.selected_display_ranges(cx),
4294 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4295 );
4296 });
4297 }
4298
4299 #[gpui::test]
4300 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4301 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4302 let settings = EditorSettings::test(&cx);
4303 let (_, view) = cx.add_window(Default::default(), |cx| {
4304 build_editor(buffer.clone(), settings, cx)
4305 });
4306
4307 assert_eq!('ⓐ'.len_utf8(), 3);
4308 assert_eq!('α'.len_utf8(), 2);
4309
4310 view.update(cx, |view, cx| {
4311 view.fold_ranges(
4312 vec![
4313 Point::new(0, 6)..Point::new(0, 12),
4314 Point::new(1, 2)..Point::new(1, 4),
4315 Point::new(2, 4)..Point::new(2, 8),
4316 ],
4317 cx,
4318 );
4319 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4320
4321 view.move_right(&MoveRight, cx);
4322 assert_eq!(
4323 view.selected_display_ranges(cx),
4324 &[empty_range(0, "ⓐ".len())]
4325 );
4326 view.move_right(&MoveRight, cx);
4327 assert_eq!(
4328 view.selected_display_ranges(cx),
4329 &[empty_range(0, "ⓐⓑ".len())]
4330 );
4331 view.move_right(&MoveRight, cx);
4332 assert_eq!(
4333 view.selected_display_ranges(cx),
4334 &[empty_range(0, "ⓐⓑ…".len())]
4335 );
4336
4337 view.move_down(&MoveDown, cx);
4338 assert_eq!(
4339 view.selected_display_ranges(cx),
4340 &[empty_range(1, "ab…".len())]
4341 );
4342 view.move_left(&MoveLeft, cx);
4343 assert_eq!(
4344 view.selected_display_ranges(cx),
4345 &[empty_range(1, "ab".len())]
4346 );
4347 view.move_left(&MoveLeft, cx);
4348 assert_eq!(
4349 view.selected_display_ranges(cx),
4350 &[empty_range(1, "a".len())]
4351 );
4352
4353 view.move_down(&MoveDown, cx);
4354 assert_eq!(
4355 view.selected_display_ranges(cx),
4356 &[empty_range(2, "α".len())]
4357 );
4358 view.move_right(&MoveRight, cx);
4359 assert_eq!(
4360 view.selected_display_ranges(cx),
4361 &[empty_range(2, "αβ".len())]
4362 );
4363 view.move_right(&MoveRight, cx);
4364 assert_eq!(
4365 view.selected_display_ranges(cx),
4366 &[empty_range(2, "αβ…".len())]
4367 );
4368 view.move_right(&MoveRight, cx);
4369 assert_eq!(
4370 view.selected_display_ranges(cx),
4371 &[empty_range(2, "αβ…ε".len())]
4372 );
4373
4374 view.move_up(&MoveUp, cx);
4375 assert_eq!(
4376 view.selected_display_ranges(cx),
4377 &[empty_range(1, "ab…e".len())]
4378 );
4379 view.move_up(&MoveUp, cx);
4380 assert_eq!(
4381 view.selected_display_ranges(cx),
4382 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4383 );
4384 view.move_left(&MoveLeft, cx);
4385 assert_eq!(
4386 view.selected_display_ranges(cx),
4387 &[empty_range(0, "ⓐⓑ…".len())]
4388 );
4389 view.move_left(&MoveLeft, cx);
4390 assert_eq!(
4391 view.selected_display_ranges(cx),
4392 &[empty_range(0, "ⓐⓑ".len())]
4393 );
4394 view.move_left(&MoveLeft, cx);
4395 assert_eq!(
4396 view.selected_display_ranges(cx),
4397 &[empty_range(0, "ⓐ".len())]
4398 );
4399 });
4400 }
4401
4402 #[gpui::test]
4403 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4404 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4405 let settings = EditorSettings::test(&cx);
4406 let (_, view) = cx.add_window(Default::default(), |cx| {
4407 build_editor(buffer.clone(), settings, cx)
4408 });
4409 view.update(cx, |view, cx| {
4410 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4411 .unwrap();
4412
4413 view.move_down(&MoveDown, cx);
4414 assert_eq!(
4415 view.selected_display_ranges(cx),
4416 &[empty_range(1, "abcd".len())]
4417 );
4418
4419 view.move_down(&MoveDown, cx);
4420 assert_eq!(
4421 view.selected_display_ranges(cx),
4422 &[empty_range(2, "αβγ".len())]
4423 );
4424
4425 view.move_down(&MoveDown, cx);
4426 assert_eq!(
4427 view.selected_display_ranges(cx),
4428 &[empty_range(3, "abcd".len())]
4429 );
4430
4431 view.move_down(&MoveDown, cx);
4432 assert_eq!(
4433 view.selected_display_ranges(cx),
4434 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4435 );
4436
4437 view.move_up(&MoveUp, cx);
4438 assert_eq!(
4439 view.selected_display_ranges(cx),
4440 &[empty_range(3, "abcd".len())]
4441 );
4442
4443 view.move_up(&MoveUp, cx);
4444 assert_eq!(
4445 view.selected_display_ranges(cx),
4446 &[empty_range(2, "αβγ".len())]
4447 );
4448 });
4449 }
4450
4451 #[gpui::test]
4452 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4453 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4454 let settings = EditorSettings::test(&cx);
4455 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4456 view.update(cx, |view, cx| {
4457 view.select_display_ranges(
4458 &[
4459 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4460 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4461 ],
4462 cx,
4463 )
4464 .unwrap();
4465 });
4466
4467 view.update(cx, |view, cx| {
4468 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4469 assert_eq!(
4470 view.selected_display_ranges(cx),
4471 &[
4472 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4473 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4474 ]
4475 );
4476 });
4477
4478 view.update(cx, |view, cx| {
4479 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4480 assert_eq!(
4481 view.selected_display_ranges(cx),
4482 &[
4483 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4484 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4485 ]
4486 );
4487 });
4488
4489 view.update(cx, |view, cx| {
4490 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4491 assert_eq!(
4492 view.selected_display_ranges(cx),
4493 &[
4494 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4495 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4496 ]
4497 );
4498 });
4499
4500 view.update(cx, |view, cx| {
4501 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4502 assert_eq!(
4503 view.selected_display_ranges(cx),
4504 &[
4505 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4506 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4507 ]
4508 );
4509 });
4510
4511 // Moving to the end of line again is a no-op.
4512 view.update(cx, |view, cx| {
4513 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4514 assert_eq!(
4515 view.selected_display_ranges(cx),
4516 &[
4517 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4518 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4519 ]
4520 );
4521 });
4522
4523 view.update(cx, |view, cx| {
4524 view.move_left(&MoveLeft, cx);
4525 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4526 assert_eq!(
4527 view.selected_display_ranges(cx),
4528 &[
4529 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4530 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4531 ]
4532 );
4533 });
4534
4535 view.update(cx, |view, cx| {
4536 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4537 assert_eq!(
4538 view.selected_display_ranges(cx),
4539 &[
4540 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4541 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4542 ]
4543 );
4544 });
4545
4546 view.update(cx, |view, cx| {
4547 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4548 assert_eq!(
4549 view.selected_display_ranges(cx),
4550 &[
4551 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4552 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4553 ]
4554 );
4555 });
4556
4557 view.update(cx, |view, cx| {
4558 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4559 assert_eq!(
4560 view.selected_display_ranges(cx),
4561 &[
4562 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4563 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4564 ]
4565 );
4566 });
4567
4568 view.update(cx, |view, cx| {
4569 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4570 assert_eq!(view.display_text(cx), "ab\n de");
4571 assert_eq!(
4572 view.selected_display_ranges(cx),
4573 &[
4574 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4575 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4576 ]
4577 );
4578 });
4579
4580 view.update(cx, |view, cx| {
4581 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4582 assert_eq!(view.display_text(cx), "\n");
4583 assert_eq!(
4584 view.selected_display_ranges(cx),
4585 &[
4586 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4587 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4588 ]
4589 );
4590 });
4591 }
4592
4593 #[gpui::test]
4594 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4595 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4596 let settings = EditorSettings::test(&cx);
4597 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4598 view.update(cx, |view, cx| {
4599 view.select_display_ranges(
4600 &[
4601 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4602 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4603 ],
4604 cx,
4605 )
4606 .unwrap();
4607 });
4608
4609 view.update(cx, |view, cx| {
4610 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4611 assert_eq!(
4612 view.selected_display_ranges(cx),
4613 &[
4614 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4615 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4616 ]
4617 );
4618 });
4619
4620 view.update(cx, |view, cx| {
4621 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4622 assert_eq!(
4623 view.selected_display_ranges(cx),
4624 &[
4625 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4626 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4627 ]
4628 );
4629 });
4630
4631 view.update(cx, |view, cx| {
4632 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4633 assert_eq!(
4634 view.selected_display_ranges(cx),
4635 &[
4636 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4637 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4638 ]
4639 );
4640 });
4641
4642 view.update(cx, |view, cx| {
4643 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4644 assert_eq!(
4645 view.selected_display_ranges(cx),
4646 &[
4647 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4648 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4649 ]
4650 );
4651 });
4652
4653 view.update(cx, |view, cx| {
4654 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4655 assert_eq!(
4656 view.selected_display_ranges(cx),
4657 &[
4658 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4659 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4660 ]
4661 );
4662 });
4663
4664 view.update(cx, |view, cx| {
4665 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4666 assert_eq!(
4667 view.selected_display_ranges(cx),
4668 &[
4669 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4670 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4671 ]
4672 );
4673 });
4674
4675 view.update(cx, |view, cx| {
4676 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4677 assert_eq!(
4678 view.selected_display_ranges(cx),
4679 &[
4680 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4681 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4682 ]
4683 );
4684 });
4685
4686 view.update(cx, |view, cx| {
4687 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4688 assert_eq!(
4689 view.selected_display_ranges(cx),
4690 &[
4691 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4692 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4693 ]
4694 );
4695 });
4696
4697 view.update(cx, |view, cx| {
4698 view.move_right(&MoveRight, cx);
4699 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4700 assert_eq!(
4701 view.selected_display_ranges(cx),
4702 &[
4703 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4704 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4705 ]
4706 );
4707 });
4708
4709 view.update(cx, |view, cx| {
4710 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4711 assert_eq!(
4712 view.selected_display_ranges(cx),
4713 &[
4714 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4715 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4716 ]
4717 );
4718 });
4719
4720 view.update(cx, |view, cx| {
4721 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4722 assert_eq!(
4723 view.selected_display_ranges(cx),
4724 &[
4725 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4726 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4727 ]
4728 );
4729 });
4730 }
4731
4732 #[gpui::test]
4733 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4734 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4735 let settings = EditorSettings::test(&cx);
4736 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4737
4738 view.update(cx, |view, cx| {
4739 view.set_wrap_width(Some(140.), cx);
4740 assert_eq!(
4741 view.display_text(cx),
4742 "use one::{\n two::three::\n four::five\n};"
4743 );
4744
4745 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4746 .unwrap();
4747
4748 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4749 assert_eq!(
4750 view.selected_display_ranges(cx),
4751 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4752 );
4753
4754 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4755 assert_eq!(
4756 view.selected_display_ranges(cx),
4757 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4758 );
4759
4760 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4761 assert_eq!(
4762 view.selected_display_ranges(cx),
4763 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4764 );
4765
4766 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4767 assert_eq!(
4768 view.selected_display_ranges(cx),
4769 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4770 );
4771
4772 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4773 assert_eq!(
4774 view.selected_display_ranges(cx),
4775 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4776 );
4777
4778 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4779 assert_eq!(
4780 view.selected_display_ranges(cx),
4781 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4782 );
4783 });
4784 }
4785
4786 #[gpui::test]
4787 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4788 let buffer = MultiBuffer::build_simple("one two three four", cx);
4789 let settings = EditorSettings::test(&cx);
4790 let (_, view) = cx.add_window(Default::default(), |cx| {
4791 build_editor(buffer.clone(), settings, cx)
4792 });
4793
4794 view.update(cx, |view, cx| {
4795 view.select_display_ranges(
4796 &[
4797 // an empty selection - the preceding word fragment is deleted
4798 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4799 // characters selected - they are deleted
4800 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4801 ],
4802 cx,
4803 )
4804 .unwrap();
4805 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4806 });
4807
4808 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4809
4810 view.update(cx, |view, cx| {
4811 view.select_display_ranges(
4812 &[
4813 // an empty selection - the following word fragment is deleted
4814 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4815 // characters selected - they are deleted
4816 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4817 ],
4818 cx,
4819 )
4820 .unwrap();
4821 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4822 });
4823
4824 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4825 }
4826
4827 #[gpui::test]
4828 fn test_newline(cx: &mut gpui::MutableAppContext) {
4829 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4830 let settings = EditorSettings::test(&cx);
4831 let (_, view) = cx.add_window(Default::default(), |cx| {
4832 build_editor(buffer.clone(), settings, cx)
4833 });
4834
4835 view.update(cx, |view, cx| {
4836 view.select_display_ranges(
4837 &[
4838 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4839 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4840 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4841 ],
4842 cx,
4843 )
4844 .unwrap();
4845
4846 view.newline(&Newline, cx);
4847 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4848 });
4849 }
4850
4851 #[gpui::test]
4852 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4853 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4854 let settings = EditorSettings::test(&cx);
4855 let (_, view) = cx.add_window(Default::default(), |cx| {
4856 build_editor(buffer.clone(), settings, cx)
4857 });
4858
4859 view.update(cx, |view, cx| {
4860 // two selections on the same line
4861 view.select_display_ranges(
4862 &[
4863 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4864 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4865 ],
4866 cx,
4867 )
4868 .unwrap();
4869
4870 // indent from mid-tabstop to full tabstop
4871 view.tab(&Tab, cx);
4872 assert_eq!(view.text(cx), " one two\nthree\n four");
4873 assert_eq!(
4874 view.selected_display_ranges(cx),
4875 &[
4876 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4877 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4878 ]
4879 );
4880
4881 // outdent from 1 tabstop to 0 tabstops
4882 view.outdent(&Outdent, cx);
4883 assert_eq!(view.text(cx), "one two\nthree\n four");
4884 assert_eq!(
4885 view.selected_display_ranges(cx),
4886 &[
4887 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4888 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4889 ]
4890 );
4891
4892 // select across line ending
4893 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4894 .unwrap();
4895
4896 // indent and outdent affect only the preceding line
4897 view.tab(&Tab, cx);
4898 assert_eq!(view.text(cx), "one two\n three\n four");
4899 assert_eq!(
4900 view.selected_display_ranges(cx),
4901 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4902 );
4903 view.outdent(&Outdent, cx);
4904 assert_eq!(view.text(cx), "one two\nthree\n four");
4905 assert_eq!(
4906 view.selected_display_ranges(cx),
4907 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4908 );
4909 });
4910 }
4911
4912 #[gpui::test]
4913 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4914 let buffer =
4915 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4916 let settings = EditorSettings::test(&cx);
4917 let (_, view) = cx.add_window(Default::default(), |cx| {
4918 build_editor(buffer.clone(), settings, cx)
4919 });
4920
4921 view.update(cx, |view, cx| {
4922 view.select_display_ranges(
4923 &[
4924 // an empty selection - the preceding character is deleted
4925 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4926 // one character selected - it is deleted
4927 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4928 // a line suffix selected - it is deleted
4929 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4930 ],
4931 cx,
4932 )
4933 .unwrap();
4934 view.backspace(&Backspace, cx);
4935 });
4936
4937 assert_eq!(
4938 buffer.read(cx).read(cx).text(),
4939 "oe two three\nfou five six\nseven ten\n"
4940 );
4941 }
4942
4943 #[gpui::test]
4944 fn test_delete(cx: &mut gpui::MutableAppContext) {
4945 let buffer =
4946 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4947 let settings = EditorSettings::test(&cx);
4948 let (_, view) = cx.add_window(Default::default(), |cx| {
4949 build_editor(buffer.clone(), settings, cx)
4950 });
4951
4952 view.update(cx, |view, cx| {
4953 view.select_display_ranges(
4954 &[
4955 // an empty selection - the following character is deleted
4956 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4957 // one character selected - it is deleted
4958 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4959 // a line suffix selected - it is deleted
4960 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4961 ],
4962 cx,
4963 )
4964 .unwrap();
4965 view.delete(&Delete, cx);
4966 });
4967
4968 assert_eq!(
4969 buffer.read(cx).read(cx).text(),
4970 "on two three\nfou five six\nseven ten\n"
4971 );
4972 }
4973
4974 #[gpui::test]
4975 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4976 let settings = EditorSettings::test(&cx);
4977 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4978 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4979 view.update(cx, |view, cx| {
4980 view.select_display_ranges(
4981 &[
4982 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4983 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4984 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4985 ],
4986 cx,
4987 )
4988 .unwrap();
4989 view.delete_line(&DeleteLine, cx);
4990 assert_eq!(view.display_text(cx), "ghi");
4991 assert_eq!(
4992 view.selected_display_ranges(cx),
4993 vec![
4994 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4995 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4996 ]
4997 );
4998 });
4999
5000 let settings = EditorSettings::test(&cx);
5001 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5002 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5003 view.update(cx, |view, cx| {
5004 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
5005 .unwrap();
5006 view.delete_line(&DeleteLine, cx);
5007 assert_eq!(view.display_text(cx), "ghi\n");
5008 assert_eq!(
5009 view.selected_display_ranges(cx),
5010 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5011 );
5012 });
5013 }
5014
5015 #[gpui::test]
5016 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5017 let settings = EditorSettings::test(&cx);
5018 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5019 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5020 view.update(cx, |view, cx| {
5021 view.select_display_ranges(
5022 &[
5023 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5024 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5025 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5026 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5027 ],
5028 cx,
5029 )
5030 .unwrap();
5031 view.duplicate_line(&DuplicateLine, cx);
5032 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5033 assert_eq!(
5034 view.selected_display_ranges(cx),
5035 vec![
5036 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5037 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5038 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5039 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5040 ]
5041 );
5042 });
5043
5044 let settings = EditorSettings::test(&cx);
5045 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5046 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5047 view.update(cx, |view, cx| {
5048 view.select_display_ranges(
5049 &[
5050 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5051 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5052 ],
5053 cx,
5054 )
5055 .unwrap();
5056 view.duplicate_line(&DuplicateLine, cx);
5057 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5058 assert_eq!(
5059 view.selected_display_ranges(cx),
5060 vec![
5061 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5062 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5063 ]
5064 );
5065 });
5066 }
5067
5068 #[gpui::test]
5069 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5070 let settings = EditorSettings::test(&cx);
5071 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5072 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5073 view.update(cx, |view, cx| {
5074 view.fold_ranges(
5075 vec![
5076 Point::new(0, 2)..Point::new(1, 2),
5077 Point::new(2, 3)..Point::new(4, 1),
5078 Point::new(7, 0)..Point::new(8, 4),
5079 ],
5080 cx,
5081 );
5082 view.select_display_ranges(
5083 &[
5084 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5085 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5086 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5087 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5088 ],
5089 cx,
5090 )
5091 .unwrap();
5092 assert_eq!(
5093 view.display_text(cx),
5094 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5095 );
5096
5097 view.move_line_up(&MoveLineUp, cx);
5098 assert_eq!(
5099 view.display_text(cx),
5100 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5101 );
5102 assert_eq!(
5103 view.selected_display_ranges(cx),
5104 vec![
5105 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5106 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5107 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5108 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5109 ]
5110 );
5111 });
5112
5113 view.update(cx, |view, cx| {
5114 view.move_line_down(&MoveLineDown, cx);
5115 assert_eq!(
5116 view.display_text(cx),
5117 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5118 );
5119 assert_eq!(
5120 view.selected_display_ranges(cx),
5121 vec![
5122 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5123 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5124 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5125 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5126 ]
5127 );
5128 });
5129
5130 view.update(cx, |view, cx| {
5131 view.move_line_down(&MoveLineDown, cx);
5132 assert_eq!(
5133 view.display_text(cx),
5134 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5135 );
5136 assert_eq!(
5137 view.selected_display_ranges(cx),
5138 vec![
5139 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5140 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5141 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5142 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5143 ]
5144 );
5145 });
5146
5147 view.update(cx, |view, cx| {
5148 view.move_line_up(&MoveLineUp, cx);
5149 assert_eq!(
5150 view.display_text(cx),
5151 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5152 );
5153 assert_eq!(
5154 view.selected_display_ranges(cx),
5155 vec![
5156 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5157 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5158 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5159 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5160 ]
5161 );
5162 });
5163 }
5164
5165 #[gpui::test]
5166 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5167 let settings = EditorSettings::test(&cx);
5168 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5169 let (_, editor) =
5170 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5171 editor.update(cx, |editor, cx| {
5172 editor.insert_blocks(
5173 [BlockProperties {
5174 position: Point::new(2, 0),
5175 disposition: BlockDisposition::Below,
5176 height: 1,
5177 render: Arc::new(|_| Empty::new().boxed()),
5178 }],
5179 cx,
5180 );
5181 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5182 editor.move_line_down(&MoveLineDown, cx);
5183 });
5184 }
5185
5186 #[gpui::test]
5187 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5188 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5189 let settings = EditorSettings::test(&cx);
5190 let view = cx
5191 .add_window(Default::default(), |cx| {
5192 build_editor(buffer.clone(), settings, cx)
5193 })
5194 .1;
5195
5196 // Cut with three selections. Clipboard text is divided into three slices.
5197 view.update(cx, |view, cx| {
5198 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5199 view.cut(&Cut, cx);
5200 assert_eq!(view.display_text(cx), "two four six ");
5201 });
5202
5203 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5204 view.update(cx, |view, cx| {
5205 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5206 view.paste(&Paste, cx);
5207 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5208 assert_eq!(
5209 view.selected_display_ranges(cx),
5210 &[
5211 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5212 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5213 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5214 ]
5215 );
5216 });
5217
5218 // Paste again but with only two cursors. Since the number of cursors doesn't
5219 // match the number of slices in the clipboard, the entire clipboard text
5220 // is pasted at each cursor.
5221 view.update(cx, |view, cx| {
5222 view.select_ranges(vec![0..0, 31..31], None, cx);
5223 view.handle_input(&Input("( ".into()), cx);
5224 view.paste(&Paste, cx);
5225 view.handle_input(&Input(") ".into()), cx);
5226 assert_eq!(
5227 view.display_text(cx),
5228 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5229 );
5230 });
5231
5232 view.update(cx, |view, cx| {
5233 view.select_ranges(vec![0..0], None, cx);
5234 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5235 assert_eq!(
5236 view.display_text(cx),
5237 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5238 );
5239 });
5240
5241 // Cut with three selections, one of which is full-line.
5242 view.update(cx, |view, cx| {
5243 view.select_display_ranges(
5244 &[
5245 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5246 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5247 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5248 ],
5249 cx,
5250 )
5251 .unwrap();
5252 view.cut(&Cut, cx);
5253 assert_eq!(
5254 view.display_text(cx),
5255 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5256 );
5257 });
5258
5259 // Paste with three selections, noticing how the copied selection that was full-line
5260 // gets inserted before the second cursor.
5261 view.update(cx, |view, cx| {
5262 view.select_display_ranges(
5263 &[
5264 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5265 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5266 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5267 ],
5268 cx,
5269 )
5270 .unwrap();
5271 view.paste(&Paste, cx);
5272 assert_eq!(
5273 view.display_text(cx),
5274 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5275 );
5276 assert_eq!(
5277 view.selected_display_ranges(cx),
5278 &[
5279 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5280 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5281 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5282 ]
5283 );
5284 });
5285
5286 // Copy with a single cursor only, which writes the whole line into the clipboard.
5287 view.update(cx, |view, cx| {
5288 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5289 .unwrap();
5290 view.copy(&Copy, cx);
5291 });
5292
5293 // Paste with three selections, noticing how the copied full-line selection is inserted
5294 // before the empty selections but replaces the selection that is non-empty.
5295 view.update(cx, |view, cx| {
5296 view.select_display_ranges(
5297 &[
5298 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5299 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5300 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5301 ],
5302 cx,
5303 )
5304 .unwrap();
5305 view.paste(&Paste, cx);
5306 assert_eq!(
5307 view.display_text(cx),
5308 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5309 );
5310 assert_eq!(
5311 view.selected_display_ranges(cx),
5312 &[
5313 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5314 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5315 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5316 ]
5317 );
5318 });
5319 }
5320
5321 #[gpui::test]
5322 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5323 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5324 let settings = EditorSettings::test(&cx);
5325 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5326 view.update(cx, |view, cx| {
5327 view.select_all(&SelectAll, cx);
5328 assert_eq!(
5329 view.selected_display_ranges(cx),
5330 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5331 );
5332 });
5333 }
5334
5335 #[gpui::test]
5336 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5337 let settings = EditorSettings::test(&cx);
5338 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5339 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5340 view.update(cx, |view, cx| {
5341 view.select_display_ranges(
5342 &[
5343 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5344 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5345 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5346 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5347 ],
5348 cx,
5349 )
5350 .unwrap();
5351 view.select_line(&SelectLine, cx);
5352 assert_eq!(
5353 view.selected_display_ranges(cx),
5354 vec![
5355 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5356 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5357 ]
5358 );
5359 });
5360
5361 view.update(cx, |view, cx| {
5362 view.select_line(&SelectLine, cx);
5363 assert_eq!(
5364 view.selected_display_ranges(cx),
5365 vec![
5366 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5367 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5368 ]
5369 );
5370 });
5371
5372 view.update(cx, |view, cx| {
5373 view.select_line(&SelectLine, cx);
5374 assert_eq!(
5375 view.selected_display_ranges(cx),
5376 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5377 );
5378 });
5379 }
5380
5381 #[gpui::test]
5382 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5383 let settings = EditorSettings::test(&cx);
5384 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5385 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5386 view.update(cx, |view, cx| {
5387 view.fold_ranges(
5388 vec![
5389 Point::new(0, 2)..Point::new(1, 2),
5390 Point::new(2, 3)..Point::new(4, 1),
5391 Point::new(7, 0)..Point::new(8, 4),
5392 ],
5393 cx,
5394 );
5395 view.select_display_ranges(
5396 &[
5397 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5398 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5399 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5400 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5401 ],
5402 cx,
5403 )
5404 .unwrap();
5405 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5406 });
5407
5408 view.update(cx, |view, cx| {
5409 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5410 assert_eq!(
5411 view.display_text(cx),
5412 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5413 );
5414 assert_eq!(
5415 view.selected_display_ranges(cx),
5416 [
5417 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5418 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5419 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5420 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5421 ]
5422 );
5423 });
5424
5425 view.update(cx, |view, cx| {
5426 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5427 .unwrap();
5428 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5429 assert_eq!(
5430 view.display_text(cx),
5431 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5432 );
5433 assert_eq!(
5434 view.selected_display_ranges(cx),
5435 [
5436 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5437 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5438 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5439 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5440 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5441 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5442 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5443 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5444 ]
5445 );
5446 });
5447 }
5448
5449 #[gpui::test]
5450 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5451 let settings = EditorSettings::test(&cx);
5452 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5453 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5454
5455 view.update(cx, |view, cx| {
5456 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5457 .unwrap();
5458 });
5459 view.update(cx, |view, cx| {
5460 view.add_selection_above(&AddSelectionAbove, cx);
5461 assert_eq!(
5462 view.selected_display_ranges(cx),
5463 vec![
5464 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5465 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5466 ]
5467 );
5468 });
5469
5470 view.update(cx, |view, cx| {
5471 view.add_selection_above(&AddSelectionAbove, cx);
5472 assert_eq!(
5473 view.selected_display_ranges(cx),
5474 vec![
5475 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5476 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5477 ]
5478 );
5479 });
5480
5481 view.update(cx, |view, cx| {
5482 view.add_selection_below(&AddSelectionBelow, cx);
5483 assert_eq!(
5484 view.selected_display_ranges(cx),
5485 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5486 );
5487 });
5488
5489 view.update(cx, |view, cx| {
5490 view.add_selection_below(&AddSelectionBelow, cx);
5491 assert_eq!(
5492 view.selected_display_ranges(cx),
5493 vec![
5494 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5495 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5496 ]
5497 );
5498 });
5499
5500 view.update(cx, |view, cx| {
5501 view.add_selection_below(&AddSelectionBelow, cx);
5502 assert_eq!(
5503 view.selected_display_ranges(cx),
5504 vec![
5505 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5506 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5507 ]
5508 );
5509 });
5510
5511 view.update(cx, |view, cx| {
5512 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5513 .unwrap();
5514 });
5515 view.update(cx, |view, cx| {
5516 view.add_selection_below(&AddSelectionBelow, cx);
5517 assert_eq!(
5518 view.selected_display_ranges(cx),
5519 vec![
5520 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5521 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5522 ]
5523 );
5524 });
5525
5526 view.update(cx, |view, cx| {
5527 view.add_selection_below(&AddSelectionBelow, cx);
5528 assert_eq!(
5529 view.selected_display_ranges(cx),
5530 vec![
5531 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5532 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5533 ]
5534 );
5535 });
5536
5537 view.update(cx, |view, cx| {
5538 view.add_selection_above(&AddSelectionAbove, cx);
5539 assert_eq!(
5540 view.selected_display_ranges(cx),
5541 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5542 );
5543 });
5544
5545 view.update(cx, |view, cx| {
5546 view.add_selection_above(&AddSelectionAbove, cx);
5547 assert_eq!(
5548 view.selected_display_ranges(cx),
5549 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5550 );
5551 });
5552
5553 view.update(cx, |view, cx| {
5554 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5555 .unwrap();
5556 view.add_selection_below(&AddSelectionBelow, cx);
5557 assert_eq!(
5558 view.selected_display_ranges(cx),
5559 vec![
5560 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5561 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5562 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5563 ]
5564 );
5565 });
5566
5567 view.update(cx, |view, cx| {
5568 view.add_selection_below(&AddSelectionBelow, cx);
5569 assert_eq!(
5570 view.selected_display_ranges(cx),
5571 vec![
5572 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5573 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5574 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5575 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5576 ]
5577 );
5578 });
5579
5580 view.update(cx, |view, cx| {
5581 view.add_selection_above(&AddSelectionAbove, cx);
5582 assert_eq!(
5583 view.selected_display_ranges(cx),
5584 vec![
5585 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5586 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5587 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5588 ]
5589 );
5590 });
5591
5592 view.update(cx, |view, cx| {
5593 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5594 .unwrap();
5595 });
5596 view.update(cx, |view, cx| {
5597 view.add_selection_above(&AddSelectionAbove, cx);
5598 assert_eq!(
5599 view.selected_display_ranges(cx),
5600 vec![
5601 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5602 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5603 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5604 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5605 ]
5606 );
5607 });
5608
5609 view.update(cx, |view, cx| {
5610 view.add_selection_below(&AddSelectionBelow, cx);
5611 assert_eq!(
5612 view.selected_display_ranges(cx),
5613 vec![
5614 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5615 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5616 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5617 ]
5618 );
5619 });
5620 }
5621
5622 #[gpui::test]
5623 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5624 let settings = cx.read(EditorSettings::test);
5625 let language = Some(Arc::new(Language::new(
5626 LanguageConfig::default(),
5627 Some(tree_sitter_rust::language()),
5628 )));
5629
5630 let text = r#"
5631 use mod1::mod2::{mod3, mod4};
5632
5633 fn fn_1(param1: bool, param2: &str) {
5634 let var1 = "text";
5635 }
5636 "#
5637 .unindent();
5638
5639 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5640 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5641 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5642 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5643 .await;
5644
5645 view.update(&mut cx, |view, cx| {
5646 view.select_display_ranges(
5647 &[
5648 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5649 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5650 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5651 ],
5652 cx,
5653 )
5654 .unwrap();
5655 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5656 });
5657 assert_eq!(
5658 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5659 &[
5660 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5661 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5662 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5663 ]
5664 );
5665
5666 view.update(&mut cx, |view, cx| {
5667 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5668 });
5669 assert_eq!(
5670 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5671 &[
5672 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5673 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5674 ]
5675 );
5676
5677 view.update(&mut cx, |view, cx| {
5678 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5679 });
5680 assert_eq!(
5681 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5682 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5683 );
5684
5685 // Trying to expand the selected syntax node one more time has no effect.
5686 view.update(&mut cx, |view, cx| {
5687 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5688 });
5689 assert_eq!(
5690 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5691 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5692 );
5693
5694 view.update(&mut cx, |view, cx| {
5695 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5696 });
5697 assert_eq!(
5698 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5699 &[
5700 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5701 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5702 ]
5703 );
5704
5705 view.update(&mut cx, |view, cx| {
5706 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5707 });
5708 assert_eq!(
5709 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5710 &[
5711 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5712 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5713 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5714 ]
5715 );
5716
5717 view.update(&mut cx, |view, cx| {
5718 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5719 });
5720 assert_eq!(
5721 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5722 &[
5723 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5724 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5725 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5726 ]
5727 );
5728
5729 // Trying to shrink the selected syntax node one more time has no effect.
5730 view.update(&mut cx, |view, cx| {
5731 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5732 });
5733 assert_eq!(
5734 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5735 &[
5736 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5737 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5738 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5739 ]
5740 );
5741
5742 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5743 // a fold.
5744 view.update(&mut cx, |view, cx| {
5745 view.fold_ranges(
5746 vec![
5747 Point::new(0, 21)..Point::new(0, 24),
5748 Point::new(3, 20)..Point::new(3, 22),
5749 ],
5750 cx,
5751 );
5752 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5753 });
5754 assert_eq!(
5755 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5756 &[
5757 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5758 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5759 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5760 ]
5761 );
5762 }
5763
5764 #[gpui::test]
5765 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5766 let settings = cx.read(EditorSettings::test);
5767 let language = Some(Arc::new(
5768 Language::new(
5769 LanguageConfig {
5770 brackets: vec![
5771 BracketPair {
5772 start: "{".to_string(),
5773 end: "}".to_string(),
5774 close: false,
5775 newline: true,
5776 },
5777 BracketPair {
5778 start: "(".to_string(),
5779 end: ")".to_string(),
5780 close: false,
5781 newline: true,
5782 },
5783 ],
5784 ..Default::default()
5785 },
5786 Some(tree_sitter_rust::language()),
5787 )
5788 .with_indents_query(
5789 r#"
5790 (_ "(" ")" @end) @indent
5791 (_ "{" "}" @end) @indent
5792 "#,
5793 )
5794 .unwrap(),
5795 ));
5796
5797 let text = "fn a() {}";
5798
5799 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5800 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5801 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5802 editor
5803 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5804 .await;
5805
5806 editor.update(&mut cx, |editor, cx| {
5807 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5808 editor.newline(&Newline, cx);
5809 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5810 assert_eq!(
5811 editor.selected_ranges(cx),
5812 &[
5813 Point::new(1, 4)..Point::new(1, 4),
5814 Point::new(3, 4)..Point::new(3, 4),
5815 Point::new(5, 0)..Point::new(5, 0)
5816 ]
5817 );
5818 });
5819 }
5820
5821 #[gpui::test]
5822 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5823 let settings = cx.read(EditorSettings::test);
5824 let language = Some(Arc::new(Language::new(
5825 LanguageConfig {
5826 brackets: vec![
5827 BracketPair {
5828 start: "{".to_string(),
5829 end: "}".to_string(),
5830 close: true,
5831 newline: true,
5832 },
5833 BracketPair {
5834 start: "/*".to_string(),
5835 end: " */".to_string(),
5836 close: true,
5837 newline: true,
5838 },
5839 ],
5840 ..Default::default()
5841 },
5842 Some(tree_sitter_rust::language()),
5843 )));
5844
5845 let text = r#"
5846 a
5847
5848 /
5849
5850 "#
5851 .unindent();
5852
5853 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5854 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5855 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5856 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5857 .await;
5858
5859 view.update(&mut cx, |view, cx| {
5860 view.select_display_ranges(
5861 &[
5862 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5863 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5864 ],
5865 cx,
5866 )
5867 .unwrap();
5868 view.handle_input(&Input("{".to_string()), cx);
5869 view.handle_input(&Input("{".to_string()), cx);
5870 view.handle_input(&Input("{".to_string()), cx);
5871 assert_eq!(
5872 view.text(cx),
5873 "
5874 {{{}}}
5875 {{{}}}
5876 /
5877
5878 "
5879 .unindent()
5880 );
5881
5882 view.move_right(&MoveRight, cx);
5883 view.handle_input(&Input("}".to_string()), cx);
5884 view.handle_input(&Input("}".to_string()), cx);
5885 view.handle_input(&Input("}".to_string()), cx);
5886 assert_eq!(
5887 view.text(cx),
5888 "
5889 {{{}}}}
5890 {{{}}}}
5891 /
5892
5893 "
5894 .unindent()
5895 );
5896
5897 view.undo(&Undo, cx);
5898 view.handle_input(&Input("/".to_string()), cx);
5899 view.handle_input(&Input("*".to_string()), cx);
5900 assert_eq!(
5901 view.text(cx),
5902 "
5903 /* */
5904 /* */
5905 /
5906
5907 "
5908 .unindent()
5909 );
5910
5911 view.undo(&Undo, cx);
5912 view.select_display_ranges(
5913 &[
5914 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5915 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5916 ],
5917 cx,
5918 )
5919 .unwrap();
5920 view.handle_input(&Input("*".to_string()), cx);
5921 assert_eq!(
5922 view.text(cx),
5923 "
5924 a
5925
5926 /*
5927 *
5928 "
5929 .unindent()
5930 );
5931 });
5932 }
5933
5934 #[gpui::test]
5935 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5936 let settings = cx.read(EditorSettings::test);
5937 let language = Some(Arc::new(Language::new(
5938 LanguageConfig {
5939 line_comment: Some("// ".to_string()),
5940 ..Default::default()
5941 },
5942 Some(tree_sitter_rust::language()),
5943 )));
5944
5945 let text = "
5946 fn a() {
5947 //b();
5948 // c();
5949 // d();
5950 }
5951 "
5952 .unindent();
5953
5954 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5955 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5956 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5957
5958 view.update(&mut cx, |editor, cx| {
5959 // If multiple selections intersect a line, the line is only
5960 // toggled once.
5961 editor
5962 .select_display_ranges(
5963 &[
5964 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5965 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5966 ],
5967 cx,
5968 )
5969 .unwrap();
5970 editor.toggle_comments(&ToggleComments, cx);
5971 assert_eq!(
5972 editor.text(cx),
5973 "
5974 fn a() {
5975 b();
5976 c();
5977 d();
5978 }
5979 "
5980 .unindent()
5981 );
5982
5983 // The comment prefix is inserted at the same column for every line
5984 // in a selection.
5985 editor
5986 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5987 .unwrap();
5988 editor.toggle_comments(&ToggleComments, cx);
5989 assert_eq!(
5990 editor.text(cx),
5991 "
5992 fn a() {
5993 // b();
5994 // c();
5995 // d();
5996 }
5997 "
5998 .unindent()
5999 );
6000
6001 // If a selection ends at the beginning of a line, that line is not toggled.
6002 editor
6003 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
6004 .unwrap();
6005 editor.toggle_comments(&ToggleComments, cx);
6006 assert_eq!(
6007 editor.text(cx),
6008 "
6009 fn a() {
6010 // b();
6011 c();
6012 // d();
6013 }
6014 "
6015 .unindent()
6016 );
6017 });
6018 }
6019
6020 #[gpui::test]
6021 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6022 let settings = EditorSettings::test(cx);
6023 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6024 let multibuffer = cx.add_model(|cx| {
6025 let mut multibuffer = MultiBuffer::new(0);
6026 multibuffer.push_excerpt(
6027 ExcerptProperties {
6028 buffer: &buffer,
6029 range: Point::new(0, 0)..Point::new(0, 4),
6030 },
6031 cx,
6032 );
6033 multibuffer.push_excerpt(
6034 ExcerptProperties {
6035 buffer: &buffer,
6036 range: Point::new(1, 0)..Point::new(1, 4),
6037 },
6038 cx,
6039 );
6040 multibuffer
6041 });
6042
6043 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6044
6045 let (_, view) = cx.add_window(Default::default(), |cx| {
6046 build_editor(multibuffer, settings, cx)
6047 });
6048 view.update(cx, |view, cx| {
6049 view.select_display_ranges(
6050 &[
6051 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6052 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6053 ],
6054 cx,
6055 )
6056 .unwrap();
6057
6058 view.handle_input(&Input("X".to_string()), cx);
6059 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6060 assert_eq!(
6061 view.selected_display_ranges(cx),
6062 &[
6063 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6064 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6065 ]
6066 )
6067 });
6068 }
6069
6070 #[gpui::test]
6071 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6072 let settings = EditorSettings::test(cx);
6073 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6074 let multibuffer = cx.add_model(|cx| {
6075 let mut multibuffer = MultiBuffer::new(0);
6076 multibuffer.push_excerpt(
6077 ExcerptProperties {
6078 buffer: &buffer,
6079 range: Point::new(0, 0)..Point::new(1, 4),
6080 },
6081 cx,
6082 );
6083 multibuffer.push_excerpt(
6084 ExcerptProperties {
6085 buffer: &buffer,
6086 range: Point::new(1, 0)..Point::new(2, 4),
6087 },
6088 cx,
6089 );
6090 multibuffer
6091 });
6092
6093 assert_eq!(
6094 multibuffer.read(cx).read(cx).text(),
6095 "aaaa\nbbbb\nbbbb\ncccc"
6096 );
6097
6098 let (_, view) = cx.add_window(Default::default(), |cx| {
6099 build_editor(multibuffer, settings, cx)
6100 });
6101 view.update(cx, |view, cx| {
6102 view.select_display_ranges(
6103 &[
6104 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6105 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6106 ],
6107 cx,
6108 )
6109 .unwrap();
6110
6111 view.handle_input(&Input("X".to_string()), cx);
6112 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6113 assert_eq!(
6114 view.selected_display_ranges(cx),
6115 &[
6116 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6117 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6118 ]
6119 )
6120 });
6121 }
6122
6123 #[gpui::test]
6124 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6125 let settings = cx.read(EditorSettings::test);
6126 let language = Some(Arc::new(Language::new(
6127 LanguageConfig {
6128 brackets: vec![
6129 BracketPair {
6130 start: "{".to_string(),
6131 end: "}".to_string(),
6132 close: true,
6133 newline: true,
6134 },
6135 BracketPair {
6136 start: "/* ".to_string(),
6137 end: " */".to_string(),
6138 close: true,
6139 newline: true,
6140 },
6141 ],
6142 ..Default::default()
6143 },
6144 Some(tree_sitter_rust::language()),
6145 )));
6146
6147 let text = concat!(
6148 "{ }\n", // Suppress rustfmt
6149 " x\n", //
6150 " /* */\n", //
6151 "x\n", //
6152 "{{} }\n", //
6153 );
6154
6155 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6156 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6157 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6158 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6159 .await;
6160
6161 view.update(&mut cx, |view, cx| {
6162 view.select_display_ranges(
6163 &[
6164 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6165 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6166 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6167 ],
6168 cx,
6169 )
6170 .unwrap();
6171 view.newline(&Newline, cx);
6172
6173 assert_eq!(
6174 view.buffer().read(cx).read(cx).text(),
6175 concat!(
6176 "{ \n", // Suppress rustfmt
6177 "\n", //
6178 "}\n", //
6179 " x\n", //
6180 " /* \n", //
6181 " \n", //
6182 " */\n", //
6183 "x\n", //
6184 "{{} \n", //
6185 "}\n", //
6186 )
6187 );
6188 });
6189 }
6190
6191 impl Editor {
6192 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
6193 &self,
6194 cx: &mut MutableAppContext,
6195 ) -> Vec<Range<D>> {
6196 self.local_selections::<D>(cx)
6197 .iter()
6198 .map(|s| {
6199 if s.reversed {
6200 s.end.clone()..s.start.clone()
6201 } else {
6202 s.start.clone()..s.end.clone()
6203 }
6204 })
6205 .collect()
6206 }
6207
6208 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
6209 let display_map = self
6210 .display_map
6211 .update(cx, |display_map, cx| display_map.snapshot(cx));
6212 self.selections
6213 .iter()
6214 .chain(
6215 self.pending_selection
6216 .as_ref()
6217 .map(|pending| &pending.selection),
6218 )
6219 .map(|s| {
6220 if s.reversed {
6221 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
6222 } else {
6223 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
6224 }
6225 })
6226 .collect()
6227 }
6228 }
6229
6230 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6231 let point = DisplayPoint::new(row as u32, column as u32);
6232 point..point
6233 }
6234
6235 fn build_editor(
6236 buffer: ModelHandle<MultiBuffer>,
6237 settings: EditorSettings,
6238 cx: &mut ViewContext<Editor>,
6239 ) -> Editor {
6240 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6241 }
6242}
6243
6244trait RangeExt<T> {
6245 fn sorted(&self) -> Range<T>;
6246 fn to_inclusive(&self) -> RangeInclusive<T>;
6247}
6248
6249impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6250 fn sorted(&self) -> Self {
6251 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6252 }
6253
6254 fn to_inclusive(&self) -> RangeInclusive<T> {
6255 self.start.clone()..=self.end.clone()
6256 }
6257}