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 selections = self.local_selections::<Point>(cx);
1787 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1788 let buffer = self.buffer.read(cx).snapshot(cx);
1789
1790 let mut edits = Vec::new();
1791 let mut new_selection_ranges = Vec::new();
1792 let mut old_folds = Vec::new();
1793 let mut new_folds = Vec::new();
1794
1795 let mut selections = selections.iter().peekable();
1796 let mut contiguous_selections = Vec::new();
1797 while let Some(selection) = selections.next() {
1798 // Accumulate contiguous regions of rows that we want to move.
1799 contiguous_selections.push(selection.point_range(&buffer));
1800
1801 let SpannedRows {
1802 mut buffer_rows,
1803 mut display_rows,
1804 } = selection.spanned_rows(false, &display_map);
1805
1806 while let Some(next_selection) = selections.peek() {
1807 let SpannedRows {
1808 buffer_rows: next_buffer_rows,
1809 display_rows: next_display_rows,
1810 } = next_selection.spanned_rows(false, &display_map);
1811 if next_buffer_rows.start <= buffer_rows.end {
1812 buffer_rows.end = next_buffer_rows.end;
1813 display_rows.end = next_display_rows.end;
1814 contiguous_selections.push(next_selection.point_range(&buffer));
1815 selections.next().unwrap();
1816 } else {
1817 break;
1818 }
1819 }
1820
1821 // Cut the text from the selected rows and paste it at the end of the next line.
1822 if display_rows.end <= display_map.max_point().row() {
1823 let start = Point::new(buffer_rows.start, 0).to_offset(&buffer);
1824 let end = Point::new(buffer_rows.end - 1, buffer.line_len(buffer_rows.end - 1))
1825 .to_offset(&buffer);
1826
1827 let next_row_display_end =
1828 DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
1829
1830 let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
1831 let next_row_buffer_end_offset = next_row_buffer_end.to_offset(&buffer);
1832
1833 if buffer.range_contains_excerpt_boundary(start..next_row_buffer_end_offset) {
1834 new_selection_ranges.extend(contiguous_selections.drain(..));
1835 continue;
1836 }
1837
1838 let mut text = String::new();
1839 text.push('\n');
1840 text.extend(buffer.text_for_range(start..end));
1841 edits.push((start..end + 1, String::new()));
1842 edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
1843
1844 // Move selections down.
1845 let display_row_delta = next_row_display_end.row() - display_rows.end + 1;
1846 for range in &mut contiguous_selections {
1847 range.start.row += display_row_delta;
1848 range.end.row += display_row_delta;
1849 }
1850
1851 // Move folds down.
1852 old_folds.push(start..end);
1853 let buffer_row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
1854 for fold in display_map.folds_in_range(start..end) {
1855 let mut start = fold.start.to_point(&buffer);
1856 let mut end = fold.end.to_point(&buffer);
1857 start.row += buffer_row_delta;
1858 end.row += buffer_row_delta;
1859 new_folds.push(start..end);
1860 }
1861 }
1862
1863 new_selection_ranges.extend(contiguous_selections.drain(..));
1864 }
1865
1866 self.start_transaction(cx);
1867 self.unfold_ranges(old_folds, cx);
1868 self.buffer.update(cx, |buffer, cx| {
1869 for (range, text) in edits.into_iter().rev() {
1870 buffer.edit(Some(range), text, cx);
1871 }
1872 });
1873 self.fold_ranges(new_folds, cx);
1874 self.select_ranges(new_selection_ranges, Some(Autoscroll::Fit), cx);
1875 self.end_transaction(cx);
1876 }
1877
1878 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1879 self.start_transaction(cx);
1880 let mut text = String::new();
1881 let mut selections = self.local_selections::<Point>(cx);
1882 let mut clipboard_selections = Vec::with_capacity(selections.len());
1883 {
1884 let buffer = self.buffer.read(cx).read(cx);
1885 let max_point = buffer.max_point();
1886 for selection in &mut selections {
1887 let is_entire_line = selection.is_empty();
1888 if is_entire_line {
1889 selection.start = Point::new(selection.start.row, 0);
1890 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1891 }
1892 let mut len = 0;
1893 for chunk in buffer.text_for_range(selection.start..selection.end) {
1894 text.push_str(chunk);
1895 len += chunk.len();
1896 }
1897 clipboard_selections.push(ClipboardSelection {
1898 len,
1899 is_entire_line,
1900 });
1901 }
1902 }
1903 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1904 self.insert("", cx);
1905 self.end_transaction(cx);
1906
1907 cx.as_mut()
1908 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1909 }
1910
1911 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1912 let selections = self.local_selections::<Point>(cx);
1913 let mut text = String::new();
1914 let mut clipboard_selections = Vec::with_capacity(selections.len());
1915 {
1916 let buffer = self.buffer.read(cx).read(cx);
1917 let max_point = buffer.max_point();
1918 for selection in selections.iter() {
1919 let mut start = selection.start;
1920 let mut end = selection.end;
1921 let is_entire_line = selection.is_empty();
1922 if is_entire_line {
1923 start = Point::new(start.row, 0);
1924 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1925 }
1926 let mut len = 0;
1927 for chunk in buffer.text_for_range(start..end) {
1928 text.push_str(chunk);
1929 len += chunk.len();
1930 }
1931 clipboard_selections.push(ClipboardSelection {
1932 len,
1933 is_entire_line,
1934 });
1935 }
1936 }
1937
1938 cx.as_mut()
1939 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1940 }
1941
1942 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1943 if let Some(item) = cx.as_mut().read_from_clipboard() {
1944 let clipboard_text = item.text();
1945 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1946 let mut selections = self.local_selections::<usize>(cx);
1947 let all_selections_were_entire_line =
1948 clipboard_selections.iter().all(|s| s.is_entire_line);
1949 if clipboard_selections.len() != selections.len() {
1950 clipboard_selections.clear();
1951 }
1952
1953 let mut delta = 0_isize;
1954 let mut start_offset = 0;
1955 for (i, selection) in selections.iter_mut().enumerate() {
1956 let to_insert;
1957 let entire_line;
1958 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1959 let end_offset = start_offset + clipboard_selection.len;
1960 to_insert = &clipboard_text[start_offset..end_offset];
1961 entire_line = clipboard_selection.is_entire_line;
1962 start_offset = end_offset
1963 } else {
1964 to_insert = clipboard_text.as_str();
1965 entire_line = all_selections_were_entire_line;
1966 }
1967
1968 selection.start = (selection.start as isize + delta) as usize;
1969 selection.end = (selection.end as isize + delta) as usize;
1970
1971 self.buffer.update(cx, |buffer, cx| {
1972 // If the corresponding selection was empty when this slice of the
1973 // clipboard text was written, then the entire line containing the
1974 // selection was copied. If this selection is also currently empty,
1975 // then paste the line before the current line of the buffer.
1976 let range = if selection.is_empty() && entire_line {
1977 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1978 let line_start = selection.start - column;
1979 line_start..line_start
1980 } else {
1981 selection.start..selection.end
1982 };
1983
1984 delta += to_insert.len() as isize - range.len() as isize;
1985 buffer.edit([range], to_insert, cx);
1986 selection.start += to_insert.len();
1987 selection.end = selection.start;
1988 });
1989 }
1990 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1991 } else {
1992 self.insert(clipboard_text, cx);
1993 }
1994 }
1995 }
1996
1997 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1998 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
1999 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2000 self.set_selections(selections, cx);
2001 }
2002 self.request_autoscroll(Autoscroll::Fit, cx);
2003 }
2004 }
2005
2006 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2007 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2008 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2009 self.set_selections(selections, cx);
2010 }
2011 self.request_autoscroll(Autoscroll::Fit, cx);
2012 }
2013 }
2014
2015 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2016 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2017 let mut selections = self.local_selections::<Point>(cx);
2018 for selection in &mut selections {
2019 let start = selection.start.to_display_point(&display_map);
2020 let end = selection.end.to_display_point(&display_map);
2021
2022 if start != end {
2023 selection.end = selection.start.clone();
2024 } else {
2025 let cursor = movement::left(&display_map, start)
2026 .unwrap()
2027 .to_point(&display_map);
2028 selection.start = cursor.clone();
2029 selection.end = cursor;
2030 }
2031 selection.reversed = false;
2032 selection.goal = SelectionGoal::None;
2033 }
2034 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2035 }
2036
2037 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2038 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2039 let mut selections = self.local_selections::<Point>(cx);
2040 for selection in &mut selections {
2041 let head = selection.head().to_display_point(&display_map);
2042 let cursor = movement::left(&display_map, head)
2043 .unwrap()
2044 .to_point(&display_map);
2045 selection.set_head(cursor);
2046 selection.goal = SelectionGoal::None;
2047 }
2048 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2049 }
2050
2051 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2052 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2053 let mut selections = self.local_selections::<Point>(cx);
2054 for selection in &mut selections {
2055 let start = selection.start.to_display_point(&display_map);
2056 let end = selection.end.to_display_point(&display_map);
2057
2058 if start != end {
2059 selection.start = selection.end.clone();
2060 } else {
2061 let cursor = movement::right(&display_map, end)
2062 .unwrap()
2063 .to_point(&display_map);
2064 selection.start = cursor;
2065 selection.end = cursor;
2066 }
2067 selection.reversed = false;
2068 selection.goal = SelectionGoal::None;
2069 }
2070 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2071 }
2072
2073 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2074 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2075 let mut selections = self.local_selections::<Point>(cx);
2076 for selection in &mut selections {
2077 let head = selection.head().to_display_point(&display_map);
2078 let cursor = movement::right(&display_map, head)
2079 .unwrap()
2080 .to_point(&display_map);
2081 selection.set_head(cursor);
2082 selection.goal = SelectionGoal::None;
2083 }
2084 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2085 }
2086
2087 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2088 if matches!(self.mode, EditorMode::SingleLine) {
2089 cx.propagate_action();
2090 return;
2091 }
2092
2093 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2094 let mut selections = self.local_selections::<Point>(cx);
2095 for selection in &mut selections {
2096 let start = selection.start.to_display_point(&display_map);
2097 let end = selection.end.to_display_point(&display_map);
2098 if start != end {
2099 selection.goal = SelectionGoal::None;
2100 }
2101
2102 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2103 let cursor = start.to_point(&display_map);
2104 selection.start = cursor;
2105 selection.end = cursor;
2106 selection.goal = goal;
2107 selection.reversed = false;
2108 }
2109 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2110 }
2111
2112 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2113 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2114 let mut selections = self.local_selections::<Point>(cx);
2115 for selection in &mut selections {
2116 let head = selection.head().to_display_point(&display_map);
2117 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2118 let cursor = head.to_point(&display_map);
2119 selection.set_head(cursor);
2120 selection.goal = goal;
2121 }
2122 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2123 }
2124
2125 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2126 if matches!(self.mode, EditorMode::SingleLine) {
2127 cx.propagate_action();
2128 return;
2129 }
2130
2131 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2132 let mut selections = self.local_selections::<Point>(cx);
2133 for selection in &mut selections {
2134 let start = selection.start.to_display_point(&display_map);
2135 let end = selection.end.to_display_point(&display_map);
2136 if start != end {
2137 selection.goal = SelectionGoal::None;
2138 }
2139
2140 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2141 let cursor = start.to_point(&display_map);
2142 selection.start = cursor;
2143 selection.end = cursor;
2144 selection.goal = goal;
2145 selection.reversed = false;
2146 }
2147 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2148 }
2149
2150 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2152 let mut selections = self.local_selections::<Point>(cx);
2153 for selection in &mut selections {
2154 let head = selection.head().to_display_point(&display_map);
2155 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2156 let cursor = head.to_point(&display_map);
2157 selection.set_head(cursor);
2158 selection.goal = goal;
2159 }
2160 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2161 }
2162
2163 pub fn move_to_previous_word_boundary(
2164 &mut self,
2165 _: &MoveToPreviousWordBoundary,
2166 cx: &mut ViewContext<Self>,
2167 ) {
2168 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2169 let mut selections = self.local_selections::<Point>(cx);
2170 for selection in &mut selections {
2171 let head = selection.head().to_display_point(&display_map);
2172 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2173 selection.start = cursor.clone();
2174 selection.end = cursor;
2175 selection.reversed = false;
2176 selection.goal = SelectionGoal::None;
2177 }
2178 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2179 }
2180
2181 pub fn select_to_previous_word_boundary(
2182 &mut self,
2183 _: &SelectToPreviousWordBoundary,
2184 cx: &mut ViewContext<Self>,
2185 ) {
2186 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2187 let mut selections = self.local_selections::<Point>(cx);
2188 for selection in &mut selections {
2189 let head = selection.head().to_display_point(&display_map);
2190 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2191 selection.set_head(cursor);
2192 selection.goal = SelectionGoal::None;
2193 }
2194 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2195 }
2196
2197 pub fn delete_to_previous_word_boundary(
2198 &mut self,
2199 _: &DeleteToPreviousWordBoundary,
2200 cx: &mut ViewContext<Self>,
2201 ) {
2202 self.start_transaction(cx);
2203 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2204 let mut selections = self.local_selections::<Point>(cx);
2205 for selection in &mut selections {
2206 if selection.is_empty() {
2207 let head = selection.head().to_display_point(&display_map);
2208 let cursor =
2209 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2210 selection.set_head(cursor);
2211 selection.goal = SelectionGoal::None;
2212 }
2213 }
2214 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2215 self.insert("", cx);
2216 self.end_transaction(cx);
2217 }
2218
2219 pub fn move_to_next_word_boundary(
2220 &mut self,
2221 _: &MoveToNextWordBoundary,
2222 cx: &mut ViewContext<Self>,
2223 ) {
2224 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2225 let mut selections = self.local_selections::<Point>(cx);
2226 for selection in &mut selections {
2227 let head = selection.head().to_display_point(&display_map);
2228 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2229 selection.start = cursor;
2230 selection.end = cursor;
2231 selection.reversed = false;
2232 selection.goal = SelectionGoal::None;
2233 }
2234 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2235 }
2236
2237 pub fn select_to_next_word_boundary(
2238 &mut self,
2239 _: &SelectToNextWordBoundary,
2240 cx: &mut ViewContext<Self>,
2241 ) {
2242 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2243 let mut selections = self.local_selections::<Point>(cx);
2244 for selection in &mut selections {
2245 let head = selection.head().to_display_point(&display_map);
2246 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2247 selection.set_head(cursor);
2248 selection.goal = SelectionGoal::None;
2249 }
2250 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2251 }
2252
2253 pub fn delete_to_next_word_boundary(
2254 &mut self,
2255 _: &DeleteToNextWordBoundary,
2256 cx: &mut ViewContext<Self>,
2257 ) {
2258 self.start_transaction(cx);
2259 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2260 let mut selections = self.local_selections::<Point>(cx);
2261 for selection in &mut selections {
2262 if selection.is_empty() {
2263 let head = selection.head().to_display_point(&display_map);
2264 let cursor =
2265 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2266 selection.set_head(cursor);
2267 selection.goal = SelectionGoal::None;
2268 }
2269 }
2270 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2271 self.insert("", cx);
2272 self.end_transaction(cx);
2273 }
2274
2275 pub fn move_to_beginning_of_line(
2276 &mut self,
2277 _: &MoveToBeginningOfLine,
2278 cx: &mut ViewContext<Self>,
2279 ) {
2280 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2281 let mut selections = self.local_selections::<Point>(cx);
2282 for selection in &mut selections {
2283 let head = selection.head().to_display_point(&display_map);
2284 let new_head = movement::line_beginning(&display_map, head, true);
2285 let cursor = new_head.to_point(&display_map);
2286 selection.start = cursor;
2287 selection.end = cursor;
2288 selection.reversed = false;
2289 selection.goal = SelectionGoal::None;
2290 }
2291 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2292 }
2293
2294 pub fn select_to_beginning_of_line(
2295 &mut self,
2296 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2297 cx: &mut ViewContext<Self>,
2298 ) {
2299 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2300 let mut selections = self.local_selections::<Point>(cx);
2301 for selection in &mut selections {
2302 let head = selection.head().to_display_point(&display_map);
2303 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2304 selection.set_head(new_head.to_point(&display_map));
2305 selection.goal = SelectionGoal::None;
2306 }
2307 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2308 }
2309
2310 pub fn delete_to_beginning_of_line(
2311 &mut self,
2312 _: &DeleteToBeginningOfLine,
2313 cx: &mut ViewContext<Self>,
2314 ) {
2315 self.start_transaction(cx);
2316 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2317 self.backspace(&Backspace, cx);
2318 self.end_transaction(cx);
2319 }
2320
2321 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2322 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2323 let mut selections = self.local_selections::<Point>(cx);
2324 {
2325 for selection in &mut selections {
2326 let head = selection.head().to_display_point(&display_map);
2327 let new_head = movement::line_end(&display_map, head);
2328 let anchor = new_head.to_point(&display_map);
2329 selection.start = anchor.clone();
2330 selection.end = anchor;
2331 selection.reversed = false;
2332 selection.goal = SelectionGoal::None;
2333 }
2334 }
2335 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2336 }
2337
2338 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2339 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2340 let mut selections = self.local_selections::<Point>(cx);
2341 for selection in &mut selections {
2342 let head = selection.head().to_display_point(&display_map);
2343 let new_head = movement::line_end(&display_map, head);
2344 selection.set_head(new_head.to_point(&display_map));
2345 selection.goal = SelectionGoal::None;
2346 }
2347 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2348 }
2349
2350 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2351 self.start_transaction(cx);
2352 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2353 self.delete(&Delete, cx);
2354 self.end_transaction(cx);
2355 }
2356
2357 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2358 self.start_transaction(cx);
2359 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2360 self.cut(&Cut, cx);
2361 self.end_transaction(cx);
2362 }
2363
2364 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2365 let selection = Selection {
2366 id: post_inc(&mut self.next_selection_id),
2367 start: 0,
2368 end: 0,
2369 reversed: false,
2370 goal: SelectionGoal::None,
2371 };
2372 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2373 }
2374
2375 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2376 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2377 selection.set_head(Point::zero());
2378 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2379 }
2380
2381 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2382 let cursor = self.buffer.read(cx).read(cx).len();
2383 let selection = Selection {
2384 id: post_inc(&mut self.next_selection_id),
2385 start: cursor,
2386 end: cursor,
2387 reversed: false,
2388 goal: SelectionGoal::None,
2389 };
2390 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2391 }
2392
2393 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2394 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2395 selection.set_head(self.buffer.read(cx).read(cx).len());
2396 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2397 }
2398
2399 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2400 let selection = Selection {
2401 id: post_inc(&mut self.next_selection_id),
2402 start: 0,
2403 end: self.buffer.read(cx).read(cx).len(),
2404 reversed: false,
2405 goal: SelectionGoal::None,
2406 };
2407 self.update_selections(vec![selection], None, cx);
2408 }
2409
2410 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2411 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2412 let mut selections = self.local_selections::<Point>(cx);
2413 let max_point = display_map.buffer_snapshot.max_point();
2414 for selection in &mut selections {
2415 let rows = selection.spanned_rows(true, &display_map).buffer_rows;
2416 selection.start = Point::new(rows.start, 0);
2417 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2418 selection.reversed = false;
2419 }
2420 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2421 }
2422
2423 pub fn split_selection_into_lines(
2424 &mut self,
2425 _: &SplitSelectionIntoLines,
2426 cx: &mut ViewContext<Self>,
2427 ) {
2428 let mut to_unfold = Vec::new();
2429 let mut new_selections = Vec::new();
2430 {
2431 let selections = self.local_selections::<Point>(cx);
2432 let buffer = self.buffer.read(cx).read(cx);
2433 for selection in selections {
2434 for row in selection.start.row..selection.end.row {
2435 let cursor = Point::new(row, buffer.line_len(row));
2436 new_selections.push(Selection {
2437 id: post_inc(&mut self.next_selection_id),
2438 start: cursor,
2439 end: cursor,
2440 reversed: false,
2441 goal: SelectionGoal::None,
2442 });
2443 }
2444 new_selections.push(Selection {
2445 id: selection.id,
2446 start: selection.end,
2447 end: selection.end,
2448 reversed: false,
2449 goal: SelectionGoal::None,
2450 });
2451 to_unfold.push(selection.start..selection.end);
2452 }
2453 }
2454 self.unfold_ranges(to_unfold, cx);
2455 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2456 }
2457
2458 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2459 self.add_selection(true, cx);
2460 }
2461
2462 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2463 self.add_selection(false, cx);
2464 }
2465
2466 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2467 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2468 let mut selections = self.local_selections::<Point>(cx);
2469 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2470 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2471 let range = oldest_selection.display_range(&display_map).sorted();
2472 let columns = cmp::min(range.start.column(), range.end.column())
2473 ..cmp::max(range.start.column(), range.end.column());
2474
2475 selections.clear();
2476 let mut stack = Vec::new();
2477 for row in range.start.row()..=range.end.row() {
2478 if let Some(selection) = self.build_columnar_selection(
2479 &display_map,
2480 row,
2481 &columns,
2482 oldest_selection.reversed,
2483 ) {
2484 stack.push(selection.id);
2485 selections.push(selection);
2486 }
2487 }
2488
2489 if above {
2490 stack.reverse();
2491 }
2492
2493 AddSelectionsState { above, stack }
2494 });
2495
2496 let last_added_selection = *state.stack.last().unwrap();
2497 let mut new_selections = Vec::new();
2498 if above == state.above {
2499 let end_row = if above {
2500 0
2501 } else {
2502 display_map.max_point().row()
2503 };
2504
2505 'outer: for selection in selections {
2506 if selection.id == last_added_selection {
2507 let range = selection.display_range(&display_map).sorted();
2508 debug_assert_eq!(range.start.row(), range.end.row());
2509 let mut row = range.start.row();
2510 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2511 {
2512 start..end
2513 } else {
2514 cmp::min(range.start.column(), range.end.column())
2515 ..cmp::max(range.start.column(), range.end.column())
2516 };
2517
2518 while row != end_row {
2519 if above {
2520 row -= 1;
2521 } else {
2522 row += 1;
2523 }
2524
2525 if let Some(new_selection) = self.build_columnar_selection(
2526 &display_map,
2527 row,
2528 &columns,
2529 selection.reversed,
2530 ) {
2531 state.stack.push(new_selection.id);
2532 if above {
2533 new_selections.push(new_selection);
2534 new_selections.push(selection);
2535 } else {
2536 new_selections.push(selection);
2537 new_selections.push(new_selection);
2538 }
2539
2540 continue 'outer;
2541 }
2542 }
2543 }
2544
2545 new_selections.push(selection);
2546 }
2547 } else {
2548 new_selections = selections;
2549 new_selections.retain(|s| s.id != last_added_selection);
2550 state.stack.pop();
2551 }
2552
2553 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2554 if state.stack.len() > 1 {
2555 self.add_selections_state = Some(state);
2556 }
2557 }
2558
2559 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2560 let replace_newest = action.0;
2561 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2562 let buffer = &display_map.buffer_snapshot;
2563 let mut selections = self.local_selections::<usize>(cx);
2564 if let Some(mut select_next_state) = self.select_next_state.take() {
2565 let query = &select_next_state.query;
2566 if !select_next_state.done {
2567 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2568 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2569 let mut next_selected_range = None;
2570
2571 let bytes_after_last_selection =
2572 buffer.bytes_in_range(last_selection.end..buffer.len());
2573 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2574 let query_matches = query
2575 .stream_find_iter(bytes_after_last_selection)
2576 .map(|result| (last_selection.end, result))
2577 .chain(
2578 query
2579 .stream_find_iter(bytes_before_first_selection)
2580 .map(|result| (0, result)),
2581 );
2582 for (start_offset, query_match) in query_matches {
2583 let query_match = query_match.unwrap(); // can only fail due to I/O
2584 let offset_range =
2585 start_offset + query_match.start()..start_offset + query_match.end();
2586 let display_range = offset_range.start.to_display_point(&display_map)
2587 ..offset_range.end.to_display_point(&display_map);
2588
2589 if !select_next_state.wordwise
2590 || (!movement::is_inside_word(&display_map, display_range.start)
2591 && !movement::is_inside_word(&display_map, display_range.end))
2592 {
2593 next_selected_range = Some(offset_range);
2594 break;
2595 }
2596 }
2597
2598 if let Some(next_selected_range) = next_selected_range {
2599 if replace_newest {
2600 if let Some(newest_id) =
2601 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2602 {
2603 selections.retain(|s| s.id != newest_id);
2604 }
2605 }
2606 selections.push(Selection {
2607 id: post_inc(&mut self.next_selection_id),
2608 start: next_selected_range.start,
2609 end: next_selected_range.end,
2610 reversed: false,
2611 goal: SelectionGoal::None,
2612 });
2613 selections.sort_unstable_by_key(|s| s.start);
2614 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2615 } else {
2616 select_next_state.done = true;
2617 }
2618 }
2619
2620 self.select_next_state = Some(select_next_state);
2621 } else if selections.len() == 1 {
2622 let selection = selections.last_mut().unwrap();
2623 if selection.start == selection.end {
2624 let word_range = movement::surrounding_word(
2625 &display_map,
2626 selection.start.to_display_point(&display_map),
2627 );
2628 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2629 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2630 selection.goal = SelectionGoal::None;
2631 selection.reversed = false;
2632
2633 let query = buffer
2634 .text_for_range(selection.start..selection.end)
2635 .collect::<String>();
2636 let select_state = SelectNextState {
2637 query: AhoCorasick::new_auto_configured(&[query]),
2638 wordwise: true,
2639 done: false,
2640 };
2641 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2642 self.select_next_state = Some(select_state);
2643 } else {
2644 let query = buffer
2645 .text_for_range(selection.start..selection.end)
2646 .collect::<String>();
2647 self.select_next_state = Some(SelectNextState {
2648 query: AhoCorasick::new_auto_configured(&[query]),
2649 wordwise: false,
2650 done: false,
2651 });
2652 self.select_next(action, cx);
2653 }
2654 }
2655 }
2656
2657 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2658 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2659 // as that portion won't be used for detecting if a line is a comment.
2660 let full_comment_prefix =
2661 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2662 prefix.to_string()
2663 } else {
2664 return;
2665 };
2666 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2667 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2668
2669 self.start_transaction(cx);
2670 let mut selections = self.local_selections::<Point>(cx);
2671 let mut all_selection_lines_are_comments = true;
2672 let mut edit_ranges = Vec::new();
2673 let mut last_toggled_row = None;
2674 self.buffer.update(cx, |buffer, cx| {
2675 for selection in &mut selections {
2676 edit_ranges.clear();
2677 let snapshot = buffer.snapshot(cx);
2678
2679 let end_row =
2680 if selection.end.row > selection.start.row && selection.end.column == 0 {
2681 selection.end.row
2682 } else {
2683 selection.end.row + 1
2684 };
2685
2686 for row in selection.start.row..end_row {
2687 // If multiple selections contain a given row, avoid processing that
2688 // row more than once.
2689 if last_toggled_row == Some(row) {
2690 continue;
2691 } else {
2692 last_toggled_row = Some(row);
2693 }
2694
2695 if snapshot.is_line_blank(row) {
2696 continue;
2697 }
2698
2699 let start = Point::new(row, snapshot.indent_column_for_line(row));
2700 let mut line_bytes = snapshot
2701 .bytes_in_range(start..snapshot.max_point())
2702 .flatten()
2703 .copied();
2704
2705 // If this line currently begins with the line comment prefix, then record
2706 // the range containing the prefix.
2707 if all_selection_lines_are_comments
2708 && line_bytes
2709 .by_ref()
2710 .take(comment_prefix.len())
2711 .eq(comment_prefix.bytes())
2712 {
2713 // Include any whitespace that matches the comment prefix.
2714 let matching_whitespace_len = line_bytes
2715 .zip(comment_prefix_whitespace.bytes())
2716 .take_while(|(a, b)| a == b)
2717 .count() as u32;
2718 let end = Point::new(
2719 row,
2720 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2721 );
2722 edit_ranges.push(start..end);
2723 }
2724 // If this line does not begin with the line comment prefix, then record
2725 // the position where the prefix should be inserted.
2726 else {
2727 all_selection_lines_are_comments = false;
2728 edit_ranges.push(start..start);
2729 }
2730 }
2731
2732 if !edit_ranges.is_empty() {
2733 if all_selection_lines_are_comments {
2734 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2735 } else {
2736 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2737 let edit_ranges = edit_ranges.iter().map(|range| {
2738 let position = Point::new(range.start.row, min_column);
2739 position..position
2740 });
2741 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2742 }
2743 }
2744 }
2745 });
2746
2747 self.update_selections(
2748 self.local_selections::<usize>(cx),
2749 Some(Autoscroll::Fit),
2750 cx,
2751 );
2752 self.end_transaction(cx);
2753 }
2754
2755 pub fn select_larger_syntax_node(
2756 &mut self,
2757 _: &SelectLargerSyntaxNode,
2758 cx: &mut ViewContext<Self>,
2759 ) {
2760 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2761 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2762 let buffer = self.buffer.read(cx).snapshot(cx);
2763
2764 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2765 let mut selected_larger_node = false;
2766 let mut new_selections = old_selections
2767 .iter()
2768 .map(|selection| {
2769 let old_range = selection.start..selection.end;
2770 let mut new_range = old_range.clone();
2771 while let Some(containing_range) =
2772 buffer.range_for_syntax_ancestor(new_range.clone())
2773 {
2774 new_range = containing_range;
2775 if !display_map.intersects_fold(new_range.start)
2776 && !display_map.intersects_fold(new_range.end)
2777 {
2778 break;
2779 }
2780 }
2781
2782 selected_larger_node |= new_range != old_range;
2783 Selection {
2784 id: selection.id,
2785 start: new_range.start,
2786 end: new_range.end,
2787 goal: SelectionGoal::None,
2788 reversed: selection.reversed,
2789 }
2790 })
2791 .collect::<Vec<_>>();
2792
2793 if selected_larger_node {
2794 stack.push(old_selections);
2795 new_selections.sort_unstable_by_key(|selection| selection.start);
2796 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2797 }
2798 self.select_larger_syntax_node_stack = stack;
2799 }
2800
2801 pub fn select_smaller_syntax_node(
2802 &mut self,
2803 _: &SelectSmallerSyntaxNode,
2804 cx: &mut ViewContext<Self>,
2805 ) {
2806 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2807 if let Some(selections) = stack.pop() {
2808 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2809 }
2810 self.select_larger_syntax_node_stack = stack;
2811 }
2812
2813 pub fn move_to_enclosing_bracket(
2814 &mut self,
2815 _: &MoveToEnclosingBracket,
2816 cx: &mut ViewContext<Self>,
2817 ) {
2818 let mut selections = self.local_selections::<usize>(cx);
2819 let buffer = self.buffer.read(cx).snapshot(cx);
2820 for selection in &mut selections {
2821 if let Some((open_range, close_range)) =
2822 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2823 {
2824 let close_range = close_range.to_inclusive();
2825 let destination = if close_range.contains(&selection.start)
2826 && close_range.contains(&selection.end)
2827 {
2828 open_range.end
2829 } else {
2830 *close_range.start()
2831 };
2832 selection.start = destination;
2833 selection.end = destination;
2834 }
2835 }
2836
2837 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2838 }
2839
2840 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2841 let buffer = self.buffer.read(cx).snapshot(cx);
2842 let selection = self.newest_selection::<usize>(&buffer);
2843 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2844 active_diagnostics
2845 .primary_range
2846 .to_offset(&buffer)
2847 .to_inclusive()
2848 });
2849 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2850 if active_primary_range.contains(&selection.head()) {
2851 *active_primary_range.end()
2852 } else {
2853 selection.head()
2854 }
2855 } else {
2856 selection.head()
2857 };
2858
2859 loop {
2860 let next_group = buffer
2861 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2862 .find_map(|(provider_name, entry)| {
2863 if entry.diagnostic.is_primary
2864 && !entry.range.is_empty()
2865 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2866 {
2867 Some((provider_name, entry.range, entry.diagnostic.group_id))
2868 } else {
2869 None
2870 }
2871 });
2872
2873 if let Some((provider_name, primary_range, group_id)) = next_group {
2874 self.activate_diagnostics(provider_name, group_id, cx);
2875 self.update_selections(
2876 vec![Selection {
2877 id: selection.id,
2878 start: primary_range.start,
2879 end: primary_range.start,
2880 reversed: false,
2881 goal: SelectionGoal::None,
2882 }],
2883 Some(Autoscroll::Center),
2884 cx,
2885 );
2886 break;
2887 } else if search_start == 0 {
2888 break;
2889 } else {
2890 // Cycle around to the start of the buffer.
2891 search_start = 0;
2892 }
2893 }
2894 }
2895
2896 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2897 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2898 let buffer = self.buffer.read(cx).snapshot(cx);
2899 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2900 let is_valid = buffer
2901 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2902 .any(|(_, entry)| {
2903 entry.diagnostic.is_primary
2904 && !entry.range.is_empty()
2905 && entry.range.start == primary_range_start
2906 && entry.diagnostic.message == active_diagnostics.primary_message
2907 });
2908
2909 if is_valid != active_diagnostics.is_valid {
2910 active_diagnostics.is_valid = is_valid;
2911 let mut new_styles = HashMap::default();
2912 for (block_id, diagnostic) in &active_diagnostics.blocks {
2913 new_styles.insert(
2914 *block_id,
2915 diagnostic_block_renderer(
2916 diagnostic.clone(),
2917 is_valid,
2918 self.build_settings.clone(),
2919 ),
2920 );
2921 }
2922 self.display_map
2923 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2924 }
2925 }
2926 }
2927
2928 fn activate_diagnostics(
2929 &mut self,
2930 provider_name: &str,
2931 group_id: usize,
2932 cx: &mut ViewContext<Self>,
2933 ) {
2934 self.dismiss_diagnostics(cx);
2935 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2936 let buffer = self.buffer.read(cx).snapshot(cx);
2937
2938 let mut primary_range = None;
2939 let mut primary_message = None;
2940 let mut group_end = Point::zero();
2941 let diagnostic_group = buffer
2942 .diagnostic_group::<Point>(provider_name, group_id)
2943 .map(|entry| {
2944 if entry.range.end > group_end {
2945 group_end = entry.range.end;
2946 }
2947 if entry.diagnostic.is_primary {
2948 primary_range = Some(entry.range.clone());
2949 primary_message = Some(entry.diagnostic.message.clone());
2950 }
2951 entry
2952 })
2953 .collect::<Vec<_>>();
2954 let primary_range = primary_range.unwrap();
2955 let primary_message = primary_message.unwrap();
2956 let primary_range =
2957 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2958
2959 let blocks = display_map
2960 .insert_blocks(
2961 diagnostic_group.iter().map(|entry| {
2962 let build_settings = self.build_settings.clone();
2963 let diagnostic = entry.diagnostic.clone();
2964 let message_height = diagnostic.message.lines().count() as u8;
2965
2966 BlockProperties {
2967 position: entry.range.start,
2968 height: message_height,
2969 render: diagnostic_block_renderer(diagnostic, true, build_settings),
2970 disposition: BlockDisposition::Below,
2971 }
2972 }),
2973 cx,
2974 )
2975 .into_iter()
2976 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2977 .collect();
2978
2979 Some(ActiveDiagnosticGroup {
2980 primary_range,
2981 primary_message,
2982 blocks,
2983 is_valid: true,
2984 })
2985 });
2986 }
2987
2988 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2989 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2990 self.display_map.update(cx, |display_map, cx| {
2991 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2992 });
2993 cx.notify();
2994 }
2995 }
2996
2997 fn build_columnar_selection(
2998 &mut self,
2999 display_map: &DisplaySnapshot,
3000 row: u32,
3001 columns: &Range<u32>,
3002 reversed: bool,
3003 ) -> Option<Selection<Point>> {
3004 let is_empty = columns.start == columns.end;
3005 let line_len = display_map.line_len(row);
3006 if columns.start < line_len || (is_empty && columns.start == line_len) {
3007 let start = DisplayPoint::new(row, columns.start);
3008 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3009 Some(Selection {
3010 id: post_inc(&mut self.next_selection_id),
3011 start: start.to_point(display_map),
3012 end: end.to_point(display_map),
3013 reversed,
3014 goal: SelectionGoal::ColumnRange {
3015 start: columns.start,
3016 end: columns.end,
3017 },
3018 })
3019 } else {
3020 None
3021 }
3022 }
3023
3024 pub fn visible_selections<'a>(
3025 &'a self,
3026 display_rows: Range<u32>,
3027 cx: &'a mut MutableAppContext,
3028 ) -> HashMap<ReplicaId, Vec<Selection<DisplayPoint>>> {
3029 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3030 let buffer = &display_map.buffer_snapshot;
3031
3032 let start = if display_rows.start == 0 {
3033 Anchor::min()
3034 } else {
3035 buffer.anchor_before(
3036 DisplayPoint::new(display_rows.start, 0).to_offset(&display_map, Bias::Left),
3037 )
3038 };
3039 let end = if display_rows.end > display_map.max_point().row() {
3040 Anchor::max()
3041 } else {
3042 buffer.anchor_before(
3043 DisplayPoint::new(display_rows.end, 0).to_offset(&display_map, Bias::Right),
3044 )
3045 };
3046
3047 let start_ix = match self
3048 .selections
3049 .binary_search_by(|probe| probe.end.cmp(&start, &buffer).unwrap())
3050 {
3051 Ok(ix) | Err(ix) => ix,
3052 };
3053 let end_ix = match self
3054 .selections
3055 .binary_search_by(|probe| probe.start.cmp(&end, &buffer).unwrap())
3056 {
3057 Ok(ix) => ix + 1,
3058 Err(ix) => ix,
3059 };
3060
3061 fn display_selection(
3062 selection: &Selection<Anchor>,
3063 display_map: &DisplaySnapshot,
3064 ) -> Selection<DisplayPoint> {
3065 Selection {
3066 id: selection.id,
3067 start: selection.start.to_display_point(&display_map),
3068 end: selection.end.to_display_point(&display_map),
3069 reversed: selection.reversed,
3070 goal: selection.goal,
3071 }
3072 }
3073
3074 let mut result = HashMap::default();
3075
3076 result.insert(
3077 self.replica_id(cx),
3078 self.selections[start_ix..end_ix]
3079 .iter()
3080 .chain(
3081 self.pending_selection
3082 .as_ref()
3083 .map(|pending| &pending.selection),
3084 )
3085 .map(|s| display_selection(s, &display_map))
3086 .collect(),
3087 );
3088
3089 for (replica_id, selection) in display_map
3090 .buffer_snapshot
3091 .remote_selections_in_range(&(start..end))
3092 {
3093 result
3094 .entry(replica_id)
3095 .or_insert(Vec::new())
3096 .push(display_selection(&selection, &display_map));
3097 }
3098
3099 result
3100 }
3101
3102 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3103 where
3104 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3105 {
3106 let buffer = self.buffer.read(cx).snapshot(cx);
3107 let mut selections = self
3108 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3109 .peekable();
3110
3111 let mut pending_selection = self.pending_selection::<D>(&buffer);
3112
3113 iter::from_fn(move || {
3114 if let Some(pending) = pending_selection.as_mut() {
3115 while let Some(next_selection) = selections.peek() {
3116 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3117 let next_selection = selections.next().unwrap();
3118 if next_selection.start < pending.start {
3119 pending.start = next_selection.start;
3120 }
3121 if next_selection.end > pending.end {
3122 pending.end = next_selection.end;
3123 }
3124 } else if next_selection.end < pending.start {
3125 return selections.next();
3126 } else {
3127 break;
3128 }
3129 }
3130
3131 pending_selection.take()
3132 } else {
3133 selections.next()
3134 }
3135 })
3136 .collect()
3137 }
3138
3139 pub fn local_anchor_selections(&self) -> &Arc<[Selection<Anchor>]> {
3140 &self.selections
3141 }
3142
3143 fn resolve_selections<'a, D, I>(
3144 &self,
3145 selections: I,
3146 snapshot: &MultiBufferSnapshot,
3147 ) -> impl 'a + Iterator<Item = Selection<D>>
3148 where
3149 D: TextDimension + Ord + Sub<D, Output = D>,
3150 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3151 {
3152 let (to_summarize, selections) = selections.into_iter().tee();
3153 let mut summaries = snapshot
3154 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3155 .into_iter();
3156 selections.map(move |s| Selection {
3157 id: s.id,
3158 start: summaries.next().unwrap(),
3159 end: summaries.next().unwrap(),
3160 reversed: s.reversed,
3161 goal: s.goal,
3162 })
3163 }
3164
3165 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3166 &self,
3167 snapshot: &MultiBufferSnapshot,
3168 ) -> Option<Selection<D>> {
3169 self.pending_selection
3170 .as_ref()
3171 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3172 }
3173
3174 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3175 &self,
3176 selection: &Selection<Anchor>,
3177 buffer: &MultiBufferSnapshot,
3178 ) -> Selection<D> {
3179 Selection {
3180 id: selection.id,
3181 start: selection.start.summary::<D>(&buffer),
3182 end: selection.end.summary::<D>(&buffer),
3183 reversed: selection.reversed,
3184 goal: selection.goal,
3185 }
3186 }
3187
3188 fn selection_count<'a>(&self) -> usize {
3189 let mut count = self.selections.len();
3190 if self.pending_selection.is_some() {
3191 count += 1;
3192 }
3193 count
3194 }
3195
3196 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3197 &self,
3198 snapshot: &MultiBufferSnapshot,
3199 ) -> Selection<D> {
3200 self.selections
3201 .iter()
3202 .min_by_key(|s| s.id)
3203 .map(|selection| self.resolve_selection(selection, snapshot))
3204 .or_else(|| self.pending_selection(snapshot))
3205 .unwrap()
3206 }
3207
3208 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3209 &self,
3210 snapshot: &MultiBufferSnapshot,
3211 ) -> Selection<D> {
3212 self.pending_selection(snapshot)
3213 .or_else(|| {
3214 self.selections
3215 .iter()
3216 .max_by_key(|s| s.id)
3217 .map(|selection| self.resolve_selection(selection, snapshot))
3218 })
3219 .unwrap()
3220 }
3221
3222 pub fn update_selections<T>(
3223 &mut self,
3224 mut selections: Vec<Selection<T>>,
3225 autoscroll: Option<Autoscroll>,
3226 cx: &mut ViewContext<Self>,
3227 ) where
3228 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3229 {
3230 // Merge overlapping selections.
3231 let buffer = self.buffer.read(cx).snapshot(cx);
3232 let mut i = 1;
3233 while i < selections.len() {
3234 if selections[i - 1].end >= selections[i].start {
3235 let removed = selections.remove(i);
3236 if removed.start < selections[i - 1].start {
3237 selections[i - 1].start = removed.start;
3238 }
3239 if removed.end > selections[i - 1].end {
3240 selections[i - 1].end = removed.end;
3241 }
3242 } else {
3243 i += 1;
3244 }
3245 }
3246
3247 self.pending_selection = None;
3248 self.add_selections_state = None;
3249 self.select_next_state = None;
3250 self.select_larger_syntax_node_stack.clear();
3251 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3252 let all_selections_inside_autoclose_ranges =
3253 if selections.len() == autoclose_pair.ranges.len() {
3254 selections
3255 .iter()
3256 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3257 .all(|(selection, autoclose_range)| {
3258 let head = selection.head().to_point(&buffer);
3259 autoclose_range.start <= head && autoclose_range.end >= head
3260 })
3261 } else {
3262 false
3263 };
3264
3265 if all_selections_inside_autoclose_ranges {
3266 break;
3267 } else {
3268 self.autoclose_stack.pop();
3269 }
3270 }
3271
3272 if let Some(autoscroll) = autoscroll {
3273 self.request_autoscroll(autoscroll, cx);
3274 }
3275 self.pause_cursor_blinking(cx);
3276
3277 self.set_selections(
3278 Arc::from_iter(selections.into_iter().map(|selection| {
3279 let end_bias = if selection.end > selection.start {
3280 Bias::Left
3281 } else {
3282 Bias::Right
3283 };
3284 Selection {
3285 id: selection.id,
3286 start: buffer.anchor_after(selection.start),
3287 end: buffer.anchor_at(selection.end, end_bias),
3288 reversed: selection.reversed,
3289 goal: selection.goal,
3290 }
3291 })),
3292 cx,
3293 );
3294 }
3295
3296 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3297 self.selections = selections;
3298 self.buffer.update(cx, |buffer, cx| {
3299 buffer.set_active_selections(&self.selections, cx)
3300 });
3301 }
3302
3303 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3304 self.autoscroll_request = Some(autoscroll);
3305 cx.notify();
3306 }
3307
3308 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3309 self.start_transaction_at(Instant::now(), cx);
3310 }
3311
3312 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3313 self.end_selection(cx);
3314 if let Some(tx_id) = self
3315 .buffer
3316 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3317 {
3318 self.selection_history
3319 .insert(tx_id, (self.selections.clone(), None));
3320 }
3321 }
3322
3323 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3324 self.end_transaction_at(Instant::now(), cx);
3325 }
3326
3327 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3328 if let Some(tx_id) = self
3329 .buffer
3330 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3331 {
3332 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3333 }
3334 }
3335
3336 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3337 log::info!("Editor::page_up");
3338 }
3339
3340 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3341 log::info!("Editor::page_down");
3342 }
3343
3344 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3345 let mut fold_ranges = Vec::new();
3346
3347 let selections = self.local_selections::<Point>(cx);
3348 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3349 for selection in selections {
3350 let range = selection.display_range(&display_map).sorted();
3351 let buffer_start_row = range.start.to_point(&display_map).row;
3352
3353 for row in (0..=range.end.row()).rev() {
3354 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3355 let fold_range = self.foldable_range_for_line(&display_map, row);
3356 if fold_range.end.row >= buffer_start_row {
3357 fold_ranges.push(fold_range);
3358 if row <= range.start.row() {
3359 break;
3360 }
3361 }
3362 }
3363 }
3364 }
3365
3366 self.fold_ranges(fold_ranges, cx);
3367 }
3368
3369 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3370 let selections = self.local_selections::<Point>(cx);
3371 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3372 let buffer = &display_map.buffer_snapshot;
3373 let ranges = selections
3374 .iter()
3375 .map(|s| {
3376 let range = s.display_range(&display_map).sorted();
3377 let mut start = range.start.to_point(&display_map);
3378 let mut end = range.end.to_point(&display_map);
3379 start.column = 0;
3380 end.column = buffer.line_len(end.row);
3381 start..end
3382 })
3383 .collect::<Vec<_>>();
3384 self.unfold_ranges(ranges, cx);
3385 }
3386
3387 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3388 let max_point = display_map.max_point();
3389 if display_row >= max_point.row() {
3390 false
3391 } else {
3392 let (start_indent, is_blank) = display_map.line_indent(display_row);
3393 if is_blank {
3394 false
3395 } else {
3396 for display_row in display_row + 1..=max_point.row() {
3397 let (indent, is_blank) = display_map.line_indent(display_row);
3398 if !is_blank {
3399 return indent > start_indent;
3400 }
3401 }
3402 false
3403 }
3404 }
3405 }
3406
3407 fn foldable_range_for_line(
3408 &self,
3409 display_map: &DisplaySnapshot,
3410 start_row: u32,
3411 ) -> Range<Point> {
3412 let max_point = display_map.max_point();
3413
3414 let (start_indent, _) = display_map.line_indent(start_row);
3415 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3416 let mut end = None;
3417 for row in start_row + 1..=max_point.row() {
3418 let (indent, is_blank) = display_map.line_indent(row);
3419 if !is_blank && indent <= start_indent {
3420 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3421 break;
3422 }
3423 }
3424
3425 let end = end.unwrap_or(max_point);
3426 return start.to_point(display_map)..end.to_point(display_map);
3427 }
3428
3429 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3430 let selections = self.local_selections::<Point>(cx);
3431 let ranges = selections.into_iter().map(|s| s.start..s.end);
3432 self.fold_ranges(ranges, cx);
3433 }
3434
3435 fn fold_ranges<T: ToOffset>(
3436 &mut self,
3437 ranges: impl IntoIterator<Item = Range<T>>,
3438 cx: &mut ViewContext<Self>,
3439 ) {
3440 let mut ranges = ranges.into_iter().peekable();
3441 if ranges.peek().is_some() {
3442 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3443 self.request_autoscroll(Autoscroll::Fit, cx);
3444 cx.notify();
3445 }
3446 }
3447
3448 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3449 if !ranges.is_empty() {
3450 self.display_map
3451 .update(cx, |map, cx| map.unfold(ranges, cx));
3452 self.request_autoscroll(Autoscroll::Fit, cx);
3453 cx.notify();
3454 }
3455 }
3456
3457 pub fn insert_blocks<P>(
3458 &mut self,
3459 blocks: impl IntoIterator<Item = BlockProperties<P>>,
3460 cx: &mut ViewContext<Self>,
3461 ) -> Vec<BlockId>
3462 where
3463 P: ToOffset + Clone,
3464 {
3465 let blocks = self
3466 .display_map
3467 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3468 self.request_autoscroll(Autoscroll::Fit, cx);
3469 blocks
3470 }
3471
3472 pub fn replace_blocks(
3473 &mut self,
3474 blocks: HashMap<BlockId, RenderBlock>,
3475 cx: &mut ViewContext<Self>,
3476 ) {
3477 self.display_map
3478 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3479 self.request_autoscroll(Autoscroll::Fit, cx);
3480 }
3481
3482 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3483 self.display_map.update(cx, |display_map, cx| {
3484 display_map.remove_blocks(block_ids, cx)
3485 });
3486 }
3487
3488 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3489 self.display_map
3490 .update(cx, |map, cx| map.snapshot(cx))
3491 .longest_row()
3492 }
3493
3494 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3495 self.display_map
3496 .update(cx, |map, cx| map.snapshot(cx))
3497 .max_point()
3498 }
3499
3500 pub fn text(&self, cx: &AppContext) -> String {
3501 self.buffer.read(cx).read(cx).text()
3502 }
3503
3504 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3505 self.display_map
3506 .update(cx, |map, cx| map.snapshot(cx))
3507 .text()
3508 }
3509
3510 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3511 self.display_map
3512 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3513 }
3514
3515 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3516 self.highlighted_row = row;
3517 }
3518
3519 pub fn highlighted_row(&mut self) -> Option<u32> {
3520 self.highlighted_row
3521 }
3522
3523 fn next_blink_epoch(&mut self) -> usize {
3524 self.blink_epoch += 1;
3525 self.blink_epoch
3526 }
3527
3528 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3529 self.show_local_cursors = true;
3530 cx.notify();
3531
3532 let epoch = self.next_blink_epoch();
3533 cx.spawn(|this, mut cx| {
3534 let this = this.downgrade();
3535 async move {
3536 Timer::after(CURSOR_BLINK_INTERVAL).await;
3537 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3538 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3539 }
3540 }
3541 })
3542 .detach();
3543 }
3544
3545 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3546 if epoch == self.blink_epoch {
3547 self.blinking_paused = false;
3548 self.blink_cursors(epoch, cx);
3549 }
3550 }
3551
3552 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3553 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3554 self.show_local_cursors = !self.show_local_cursors;
3555 cx.notify();
3556
3557 let epoch = self.next_blink_epoch();
3558 cx.spawn(|this, mut cx| {
3559 let this = this.downgrade();
3560 async move {
3561 Timer::after(CURSOR_BLINK_INTERVAL).await;
3562 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3563 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3564 }
3565 }
3566 })
3567 .detach();
3568 }
3569 }
3570
3571 pub fn show_local_cursors(&self) -> bool {
3572 self.show_local_cursors
3573 }
3574
3575 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3576 self.refresh_active_diagnostics(cx);
3577 cx.notify();
3578 }
3579
3580 fn on_buffer_event(
3581 &mut self,
3582 _: ModelHandle<MultiBuffer>,
3583 event: &language::Event,
3584 cx: &mut ViewContext<Self>,
3585 ) {
3586 match event {
3587 language::Event::Edited => cx.emit(Event::Edited),
3588 language::Event::Dirtied => cx.emit(Event::Dirtied),
3589 language::Event::Saved => cx.emit(Event::Saved),
3590 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3591 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3592 language::Event::Closed => cx.emit(Event::Closed),
3593 _ => {}
3594 }
3595 }
3596
3597 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3598 cx.notify();
3599 }
3600}
3601
3602impl EditorSnapshot {
3603 pub fn is_focused(&self) -> bool {
3604 self.is_focused
3605 }
3606
3607 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3608 self.placeholder_text.as_ref()
3609 }
3610
3611 pub fn scroll_position(&self) -> Vector2F {
3612 compute_scroll_position(
3613 &self.display_snapshot,
3614 self.scroll_position,
3615 &self.scroll_top_anchor,
3616 )
3617 }
3618}
3619
3620impl Deref for EditorSnapshot {
3621 type Target = DisplaySnapshot;
3622
3623 fn deref(&self) -> &Self::Target {
3624 &self.display_snapshot
3625 }
3626}
3627
3628impl EditorSettings {
3629 #[cfg(any(test, feature = "test-support"))]
3630 pub fn test(cx: &AppContext) -> Self {
3631 Self {
3632 tab_size: 4,
3633 soft_wrap: SoftWrap::None,
3634 style: {
3635 let font_cache: &gpui::FontCache = cx.font_cache();
3636 let font_family_name = Arc::from("Monaco");
3637 let font_properties = Default::default();
3638 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3639 let font_id = font_cache
3640 .select_font(font_family_id, &font_properties)
3641 .unwrap();
3642 EditorStyle {
3643 text: gpui::fonts::TextStyle {
3644 font_family_name,
3645 font_family_id,
3646 font_id,
3647 font_size: 14.,
3648 color: gpui::color::Color::from_u32(0xff0000ff),
3649 font_properties,
3650 underline: None,
3651 },
3652 placeholder_text: None,
3653 background: Default::default(),
3654 gutter_background: Default::default(),
3655 active_line_background: Default::default(),
3656 highlighted_line_background: Default::default(),
3657 line_number: Default::default(),
3658 line_number_active: Default::default(),
3659 selection: Default::default(),
3660 guest_selections: Default::default(),
3661 syntax: Default::default(),
3662 error_diagnostic: Default::default(),
3663 invalid_error_diagnostic: Default::default(),
3664 warning_diagnostic: Default::default(),
3665 invalid_warning_diagnostic: Default::default(),
3666 information_diagnostic: Default::default(),
3667 invalid_information_diagnostic: Default::default(),
3668 hint_diagnostic: Default::default(),
3669 invalid_hint_diagnostic: Default::default(),
3670 }
3671 },
3672 }
3673 }
3674}
3675
3676fn compute_scroll_position(
3677 snapshot: &DisplaySnapshot,
3678 mut scroll_position: Vector2F,
3679 scroll_top_anchor: &Anchor,
3680) -> Vector2F {
3681 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3682 scroll_position.set_y(scroll_top + scroll_position.y());
3683 scroll_position
3684}
3685
3686#[derive(Copy, Clone)]
3687pub enum Event {
3688 Activate,
3689 Edited,
3690 Blurred,
3691 Dirtied,
3692 Saved,
3693 FileHandleChanged,
3694 Closed,
3695}
3696
3697impl Entity for Editor {
3698 type Event = Event;
3699}
3700
3701impl View for Editor {
3702 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3703 let settings = (self.build_settings)(cx);
3704 self.display_map.update(cx, |map, cx| {
3705 map.set_font(
3706 settings.style.text.font_id,
3707 settings.style.text.font_size,
3708 cx,
3709 )
3710 });
3711 EditorElement::new(self.handle.clone(), settings).boxed()
3712 }
3713
3714 fn ui_name() -> &'static str {
3715 "Editor"
3716 }
3717
3718 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3719 self.focused = true;
3720 self.blink_cursors(self.blink_epoch, cx);
3721 self.buffer.update(cx, |buffer, cx| {
3722 buffer.set_active_selections(&self.selections, cx)
3723 });
3724 }
3725
3726 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3727 self.focused = false;
3728 self.show_local_cursors = false;
3729 self.buffer
3730 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3731 cx.emit(Event::Blurred);
3732 cx.notify();
3733 }
3734
3735 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3736 let mut cx = Self::default_keymap_context();
3737 let mode = match self.mode {
3738 EditorMode::SingleLine => "single_line",
3739 EditorMode::AutoHeight { .. } => "auto_height",
3740 EditorMode::Full => "full",
3741 };
3742 cx.map.insert("mode".into(), mode.into());
3743 cx
3744 }
3745}
3746
3747impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3748 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3749 let start = self.start.to_point(buffer);
3750 let end = self.end.to_point(buffer);
3751 if self.reversed {
3752 end..start
3753 } else {
3754 start..end
3755 }
3756 }
3757
3758 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3759 let start = self.start.to_offset(buffer);
3760 let end = self.end.to_offset(buffer);
3761 if self.reversed {
3762 end..start
3763 } else {
3764 start..end
3765 }
3766 }
3767
3768 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3769 let start = self
3770 .start
3771 .to_point(&map.buffer_snapshot)
3772 .to_display_point(map);
3773 let end = self
3774 .end
3775 .to_point(&map.buffer_snapshot)
3776 .to_display_point(map);
3777 if self.reversed {
3778 end..start
3779 } else {
3780 start..end
3781 }
3782 }
3783
3784 fn spanned_rows(
3785 &self,
3786 include_end_if_at_line_start: bool,
3787 map: &DisplaySnapshot,
3788 ) -> SpannedRows {
3789 let display_start = self
3790 .start
3791 .to_point(&map.buffer_snapshot)
3792 .to_display_point(map);
3793 let mut display_end = self
3794 .end
3795 .to_point(&map.buffer_snapshot)
3796 .to_display_point(map);
3797 if !include_end_if_at_line_start
3798 && display_end.row() != map.max_point().row()
3799 && display_start.row() != display_end.row()
3800 && display_end.column() == 0
3801 {
3802 *display_end.row_mut() -= 1;
3803 }
3804
3805 let (display_start, buffer_start) = map.prev_row_boundary(display_start);
3806 let (display_end, buffer_end) = map.next_row_boundary(display_end);
3807
3808 SpannedRows {
3809 buffer_rows: buffer_start.row..buffer_end.row + 1,
3810 display_rows: display_start.row()..display_end.row() + 1,
3811 }
3812 }
3813}
3814
3815pub fn diagnostic_block_renderer(
3816 diagnostic: Diagnostic,
3817 is_valid: bool,
3818 build_settings: BuildSettings,
3819) -> RenderBlock {
3820 Arc::new(move |cx: &BlockContext| {
3821 let settings = build_settings(cx);
3822 let mut text_style = settings.style.text.clone();
3823 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3824 Text::new(diagnostic.message.clone(), text_style)
3825 .contained()
3826 .with_margin_left(cx.anchor_x)
3827 .boxed()
3828 })
3829}
3830
3831pub fn diagnostic_header_renderer(
3832 buffer: ModelHandle<Buffer>,
3833 diagnostic: Diagnostic,
3834 is_valid: bool,
3835 build_settings: BuildSettings,
3836) -> RenderBlock {
3837 Arc::new(move |cx| {
3838 let settings = build_settings(cx);
3839 let mut text_style = settings.style.text.clone();
3840 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3841 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3842 file.path().to_string_lossy().to_string()
3843 } else {
3844 "untitled".to_string()
3845 };
3846
3847 Flex::column()
3848 .with_child(Label::new(diagnostic.message.clone(), text_style).boxed())
3849 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3850 .boxed()
3851 })
3852}
3853
3854pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3855 Arc::new(move |cx| {
3856 let settings = build_settings(cx);
3857 let text_style = settings.style.text.clone();
3858 Label::new("...".to_string(), text_style).boxed()
3859 })
3860}
3861
3862pub fn diagnostic_style(
3863 severity: DiagnosticSeverity,
3864 valid: bool,
3865 style: &EditorStyle,
3866) -> DiagnosticStyle {
3867 match (severity, valid) {
3868 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3869 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3870 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3871 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3872 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3873 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3874 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3875 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3876 _ => Default::default(),
3877 }
3878}
3879
3880pub fn settings_builder(
3881 buffer: WeakModelHandle<MultiBuffer>,
3882 settings: watch::Receiver<workspace::Settings>,
3883) -> BuildSettings {
3884 Arc::new(move |cx| {
3885 let settings = settings.borrow();
3886 let font_cache = cx.font_cache();
3887 let font_family_id = settings.buffer_font_family;
3888 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3889 let font_properties = Default::default();
3890 let font_id = font_cache
3891 .select_font(font_family_id, &font_properties)
3892 .unwrap();
3893 let font_size = settings.buffer_font_size;
3894
3895 let mut theme = settings.theme.editor.clone();
3896 theme.text = TextStyle {
3897 color: theme.text.color,
3898 font_family_name,
3899 font_family_id,
3900 font_id,
3901 font_size,
3902 font_properties,
3903 underline: None,
3904 };
3905 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3906 let soft_wrap = match settings.soft_wrap(language) {
3907 workspace::settings::SoftWrap::None => SoftWrap::None,
3908 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3909 workspace::settings::SoftWrap::PreferredLineLength => {
3910 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3911 }
3912 };
3913
3914 EditorSettings {
3915 tab_size: settings.tab_size,
3916 soft_wrap,
3917 style: theme,
3918 }
3919 })
3920}
3921
3922#[cfg(test)]
3923mod tests {
3924 use super::*;
3925 use language::LanguageConfig;
3926 use std::time::Instant;
3927 use text::Point;
3928 use unindent::Unindent;
3929 use util::test::sample_text;
3930
3931 #[gpui::test]
3932 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3933 let mut now = Instant::now();
3934 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3935 let group_interval = buffer.read(cx).transaction_group_interval();
3936 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3937 let settings = EditorSettings::test(cx);
3938 let (_, editor) = cx.add_window(Default::default(), |cx| {
3939 build_editor(buffer.clone(), settings, cx)
3940 });
3941
3942 editor.update(cx, |editor, cx| {
3943 editor.start_transaction_at(now, cx);
3944 editor.select_ranges([2..4], None, cx);
3945 editor.insert("cd", cx);
3946 editor.end_transaction_at(now, cx);
3947 assert_eq!(editor.text(cx), "12cd56");
3948 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3949
3950 editor.start_transaction_at(now, cx);
3951 editor.select_ranges([4..5], None, cx);
3952 editor.insert("e", cx);
3953 editor.end_transaction_at(now, cx);
3954 assert_eq!(editor.text(cx), "12cde6");
3955 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3956
3957 now += group_interval + Duration::from_millis(1);
3958 editor.select_ranges([2..2], None, cx);
3959
3960 // Simulate an edit in another editor
3961 buffer.update(cx, |buffer, cx| {
3962 buffer.start_transaction_at(now, cx);
3963 buffer.edit([0..1], "a", cx);
3964 buffer.edit([1..1], "b", cx);
3965 buffer.end_transaction_at(now, cx);
3966 });
3967
3968 assert_eq!(editor.text(cx), "ab2cde6");
3969 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3970
3971 // Last transaction happened past the group interval in a different editor.
3972 // Undo it individually and don't restore selections.
3973 editor.undo(&Undo, cx);
3974 assert_eq!(editor.text(cx), "12cde6");
3975 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3976
3977 // First two transactions happened within the group interval in this editor.
3978 // Undo them together and restore selections.
3979 editor.undo(&Undo, cx);
3980 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3981 assert_eq!(editor.text(cx), "123456");
3982 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3983
3984 // Redo the first two transactions together.
3985 editor.redo(&Redo, cx);
3986 assert_eq!(editor.text(cx), "12cde6");
3987 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3988
3989 // Redo the last transaction on its own.
3990 editor.redo(&Redo, cx);
3991 assert_eq!(editor.text(cx), "ab2cde6");
3992 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
3993
3994 // Test empty transactions.
3995 editor.start_transaction_at(now, cx);
3996 editor.end_transaction_at(now, cx);
3997 editor.undo(&Undo, cx);
3998 assert_eq!(editor.text(cx), "12cde6");
3999 });
4000 }
4001
4002 #[gpui::test]
4003 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4004 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4005 let settings = EditorSettings::test(cx);
4006 let (_, editor) =
4007 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4008
4009 editor.update(cx, |view, cx| {
4010 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4011 });
4012
4013 assert_eq!(
4014 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4015 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4016 );
4017
4018 editor.update(cx, |view, cx| {
4019 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4020 });
4021
4022 assert_eq!(
4023 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4024 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4025 );
4026
4027 editor.update(cx, |view, cx| {
4028 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4029 });
4030
4031 assert_eq!(
4032 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4033 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4034 );
4035
4036 editor.update(cx, |view, cx| {
4037 view.end_selection(cx);
4038 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4039 });
4040
4041 assert_eq!(
4042 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4043 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4044 );
4045
4046 editor.update(cx, |view, cx| {
4047 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4048 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4049 });
4050
4051 assert_eq!(
4052 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4053 [
4054 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4055 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4056 ]
4057 );
4058
4059 editor.update(cx, |view, cx| {
4060 view.end_selection(cx);
4061 });
4062
4063 assert_eq!(
4064 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4065 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4066 );
4067 }
4068
4069 #[gpui::test]
4070 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4071 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4072 let settings = EditorSettings::test(cx);
4073 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4074
4075 view.update(cx, |view, cx| {
4076 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4077 assert_eq!(
4078 view.selected_display_ranges(cx),
4079 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4080 );
4081 });
4082
4083 view.update(cx, |view, cx| {
4084 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4085 assert_eq!(
4086 view.selected_display_ranges(cx),
4087 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4088 );
4089 });
4090
4091 view.update(cx, |view, cx| {
4092 view.cancel(&Cancel, cx);
4093 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4094 assert_eq!(
4095 view.selected_display_ranges(cx),
4096 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4097 );
4098 });
4099 }
4100
4101 #[gpui::test]
4102 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4103 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4104 let settings = EditorSettings::test(cx);
4105 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4106
4107 view.update(cx, |view, cx| {
4108 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4109 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4110 view.end_selection(cx);
4111
4112 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4113 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4114 view.end_selection(cx);
4115 assert_eq!(
4116 view.selected_display_ranges(cx),
4117 [
4118 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4119 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4120 ]
4121 );
4122 });
4123
4124 view.update(cx, |view, cx| {
4125 view.cancel(&Cancel, cx);
4126 assert_eq!(
4127 view.selected_display_ranges(cx),
4128 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4129 );
4130 });
4131
4132 view.update(cx, |view, cx| {
4133 view.cancel(&Cancel, cx);
4134 assert_eq!(
4135 view.selected_display_ranges(cx),
4136 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4137 );
4138 });
4139 }
4140
4141 #[gpui::test]
4142 fn test_fold(cx: &mut gpui::MutableAppContext) {
4143 let buffer = MultiBuffer::build_simple(
4144 &"
4145 impl Foo {
4146 // Hello!
4147
4148 fn a() {
4149 1
4150 }
4151
4152 fn b() {
4153 2
4154 }
4155
4156 fn c() {
4157 3
4158 }
4159 }
4160 "
4161 .unindent(),
4162 cx,
4163 );
4164 let settings = EditorSettings::test(&cx);
4165 let (_, view) = cx.add_window(Default::default(), |cx| {
4166 build_editor(buffer.clone(), settings, cx)
4167 });
4168
4169 view.update(cx, |view, cx| {
4170 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4171 .unwrap();
4172 view.fold(&Fold, cx);
4173 assert_eq!(
4174 view.display_text(cx),
4175 "
4176 impl Foo {
4177 // Hello!
4178
4179 fn a() {
4180 1
4181 }
4182
4183 fn b() {…
4184 }
4185
4186 fn c() {…
4187 }
4188 }
4189 "
4190 .unindent(),
4191 );
4192
4193 view.fold(&Fold, cx);
4194 assert_eq!(
4195 view.display_text(cx),
4196 "
4197 impl Foo {…
4198 }
4199 "
4200 .unindent(),
4201 );
4202
4203 view.unfold(&Unfold, cx);
4204 assert_eq!(
4205 view.display_text(cx),
4206 "
4207 impl Foo {
4208 // Hello!
4209
4210 fn a() {
4211 1
4212 }
4213
4214 fn b() {…
4215 }
4216
4217 fn c() {…
4218 }
4219 }
4220 "
4221 .unindent(),
4222 );
4223
4224 view.unfold(&Unfold, cx);
4225 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4226 });
4227 }
4228
4229 #[gpui::test]
4230 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4231 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4232 let settings = EditorSettings::test(&cx);
4233 let (_, view) = cx.add_window(Default::default(), |cx| {
4234 build_editor(buffer.clone(), settings, cx)
4235 });
4236
4237 buffer.update(cx, |buffer, cx| {
4238 buffer.edit(
4239 vec![
4240 Point::new(1, 0)..Point::new(1, 0),
4241 Point::new(1, 1)..Point::new(1, 1),
4242 ],
4243 "\t",
4244 cx,
4245 );
4246 });
4247
4248 view.update(cx, |view, cx| {
4249 assert_eq!(
4250 view.selected_display_ranges(cx),
4251 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4252 );
4253
4254 view.move_down(&MoveDown, cx);
4255 assert_eq!(
4256 view.selected_display_ranges(cx),
4257 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4258 );
4259
4260 view.move_right(&MoveRight, cx);
4261 assert_eq!(
4262 view.selected_display_ranges(cx),
4263 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4264 );
4265
4266 view.move_left(&MoveLeft, cx);
4267 assert_eq!(
4268 view.selected_display_ranges(cx),
4269 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4270 );
4271
4272 view.move_up(&MoveUp, cx);
4273 assert_eq!(
4274 view.selected_display_ranges(cx),
4275 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4276 );
4277
4278 view.move_to_end(&MoveToEnd, cx);
4279 assert_eq!(
4280 view.selected_display_ranges(cx),
4281 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4282 );
4283
4284 view.move_to_beginning(&MoveToBeginning, cx);
4285 assert_eq!(
4286 view.selected_display_ranges(cx),
4287 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4288 );
4289
4290 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4291 .unwrap();
4292 view.select_to_beginning(&SelectToBeginning, cx);
4293 assert_eq!(
4294 view.selected_display_ranges(cx),
4295 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4296 );
4297
4298 view.select_to_end(&SelectToEnd, cx);
4299 assert_eq!(
4300 view.selected_display_ranges(cx),
4301 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4302 );
4303 });
4304 }
4305
4306 #[gpui::test]
4307 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4308 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4309 let settings = EditorSettings::test(&cx);
4310 let (_, view) = cx.add_window(Default::default(), |cx| {
4311 build_editor(buffer.clone(), settings, cx)
4312 });
4313
4314 assert_eq!('ⓐ'.len_utf8(), 3);
4315 assert_eq!('α'.len_utf8(), 2);
4316
4317 view.update(cx, |view, cx| {
4318 view.fold_ranges(
4319 vec![
4320 Point::new(0, 6)..Point::new(0, 12),
4321 Point::new(1, 2)..Point::new(1, 4),
4322 Point::new(2, 4)..Point::new(2, 8),
4323 ],
4324 cx,
4325 );
4326 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4327
4328 view.move_right(&MoveRight, cx);
4329 assert_eq!(
4330 view.selected_display_ranges(cx),
4331 &[empty_range(0, "ⓐ".len())]
4332 );
4333 view.move_right(&MoveRight, cx);
4334 assert_eq!(
4335 view.selected_display_ranges(cx),
4336 &[empty_range(0, "ⓐⓑ".len())]
4337 );
4338 view.move_right(&MoveRight, cx);
4339 assert_eq!(
4340 view.selected_display_ranges(cx),
4341 &[empty_range(0, "ⓐⓑ…".len())]
4342 );
4343
4344 view.move_down(&MoveDown, cx);
4345 assert_eq!(
4346 view.selected_display_ranges(cx),
4347 &[empty_range(1, "ab…".len())]
4348 );
4349 view.move_left(&MoveLeft, cx);
4350 assert_eq!(
4351 view.selected_display_ranges(cx),
4352 &[empty_range(1, "ab".len())]
4353 );
4354 view.move_left(&MoveLeft, cx);
4355 assert_eq!(
4356 view.selected_display_ranges(cx),
4357 &[empty_range(1, "a".len())]
4358 );
4359
4360 view.move_down(&MoveDown, cx);
4361 assert_eq!(
4362 view.selected_display_ranges(cx),
4363 &[empty_range(2, "α".len())]
4364 );
4365 view.move_right(&MoveRight, cx);
4366 assert_eq!(
4367 view.selected_display_ranges(cx),
4368 &[empty_range(2, "αβ".len())]
4369 );
4370 view.move_right(&MoveRight, cx);
4371 assert_eq!(
4372 view.selected_display_ranges(cx),
4373 &[empty_range(2, "αβ…".len())]
4374 );
4375 view.move_right(&MoveRight, cx);
4376 assert_eq!(
4377 view.selected_display_ranges(cx),
4378 &[empty_range(2, "αβ…ε".len())]
4379 );
4380
4381 view.move_up(&MoveUp, cx);
4382 assert_eq!(
4383 view.selected_display_ranges(cx),
4384 &[empty_range(1, "ab…e".len())]
4385 );
4386 view.move_up(&MoveUp, cx);
4387 assert_eq!(
4388 view.selected_display_ranges(cx),
4389 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4390 );
4391 view.move_left(&MoveLeft, cx);
4392 assert_eq!(
4393 view.selected_display_ranges(cx),
4394 &[empty_range(0, "ⓐⓑ…".len())]
4395 );
4396 view.move_left(&MoveLeft, cx);
4397 assert_eq!(
4398 view.selected_display_ranges(cx),
4399 &[empty_range(0, "ⓐⓑ".len())]
4400 );
4401 view.move_left(&MoveLeft, cx);
4402 assert_eq!(
4403 view.selected_display_ranges(cx),
4404 &[empty_range(0, "ⓐ".len())]
4405 );
4406 });
4407 }
4408
4409 #[gpui::test]
4410 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4411 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4412 let settings = EditorSettings::test(&cx);
4413 let (_, view) = cx.add_window(Default::default(), |cx| {
4414 build_editor(buffer.clone(), settings, cx)
4415 });
4416 view.update(cx, |view, cx| {
4417 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4418 .unwrap();
4419
4420 view.move_down(&MoveDown, cx);
4421 assert_eq!(
4422 view.selected_display_ranges(cx),
4423 &[empty_range(1, "abcd".len())]
4424 );
4425
4426 view.move_down(&MoveDown, cx);
4427 assert_eq!(
4428 view.selected_display_ranges(cx),
4429 &[empty_range(2, "αβγ".len())]
4430 );
4431
4432 view.move_down(&MoveDown, cx);
4433 assert_eq!(
4434 view.selected_display_ranges(cx),
4435 &[empty_range(3, "abcd".len())]
4436 );
4437
4438 view.move_down(&MoveDown, cx);
4439 assert_eq!(
4440 view.selected_display_ranges(cx),
4441 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4442 );
4443
4444 view.move_up(&MoveUp, cx);
4445 assert_eq!(
4446 view.selected_display_ranges(cx),
4447 &[empty_range(3, "abcd".len())]
4448 );
4449
4450 view.move_up(&MoveUp, cx);
4451 assert_eq!(
4452 view.selected_display_ranges(cx),
4453 &[empty_range(2, "αβγ".len())]
4454 );
4455 });
4456 }
4457
4458 #[gpui::test]
4459 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4460 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4461 let settings = EditorSettings::test(&cx);
4462 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4463 view.update(cx, |view, cx| {
4464 view.select_display_ranges(
4465 &[
4466 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4467 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4468 ],
4469 cx,
4470 )
4471 .unwrap();
4472 });
4473
4474 view.update(cx, |view, cx| {
4475 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4476 assert_eq!(
4477 view.selected_display_ranges(cx),
4478 &[
4479 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4480 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4481 ]
4482 );
4483 });
4484
4485 view.update(cx, |view, cx| {
4486 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4487 assert_eq!(
4488 view.selected_display_ranges(cx),
4489 &[
4490 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4491 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4492 ]
4493 );
4494 });
4495
4496 view.update(cx, |view, cx| {
4497 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4498 assert_eq!(
4499 view.selected_display_ranges(cx),
4500 &[
4501 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4502 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4503 ]
4504 );
4505 });
4506
4507 view.update(cx, |view, cx| {
4508 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4509 assert_eq!(
4510 view.selected_display_ranges(cx),
4511 &[
4512 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4513 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4514 ]
4515 );
4516 });
4517
4518 // Moving to the end of line again is a no-op.
4519 view.update(cx, |view, cx| {
4520 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4521 assert_eq!(
4522 view.selected_display_ranges(cx),
4523 &[
4524 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4525 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4526 ]
4527 );
4528 });
4529
4530 view.update(cx, |view, cx| {
4531 view.move_left(&MoveLeft, cx);
4532 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4533 assert_eq!(
4534 view.selected_display_ranges(cx),
4535 &[
4536 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4537 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4538 ]
4539 );
4540 });
4541
4542 view.update(cx, |view, cx| {
4543 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4544 assert_eq!(
4545 view.selected_display_ranges(cx),
4546 &[
4547 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4548 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4549 ]
4550 );
4551 });
4552
4553 view.update(cx, |view, cx| {
4554 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4555 assert_eq!(
4556 view.selected_display_ranges(cx),
4557 &[
4558 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4559 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4560 ]
4561 );
4562 });
4563
4564 view.update(cx, |view, cx| {
4565 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4566 assert_eq!(
4567 view.selected_display_ranges(cx),
4568 &[
4569 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4570 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4571 ]
4572 );
4573 });
4574
4575 view.update(cx, |view, cx| {
4576 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4577 assert_eq!(view.display_text(cx), "ab\n de");
4578 assert_eq!(
4579 view.selected_display_ranges(cx),
4580 &[
4581 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4582 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4583 ]
4584 );
4585 });
4586
4587 view.update(cx, |view, cx| {
4588 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4589 assert_eq!(view.display_text(cx), "\n");
4590 assert_eq!(
4591 view.selected_display_ranges(cx),
4592 &[
4593 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4594 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4595 ]
4596 );
4597 });
4598 }
4599
4600 #[gpui::test]
4601 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4602 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4603 let settings = EditorSettings::test(&cx);
4604 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4605 view.update(cx, |view, cx| {
4606 view.select_display_ranges(
4607 &[
4608 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4609 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4610 ],
4611 cx,
4612 )
4613 .unwrap();
4614 });
4615
4616 view.update(cx, |view, cx| {
4617 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4618 assert_eq!(
4619 view.selected_display_ranges(cx),
4620 &[
4621 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4622 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4623 ]
4624 );
4625 });
4626
4627 view.update(cx, |view, cx| {
4628 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4629 assert_eq!(
4630 view.selected_display_ranges(cx),
4631 &[
4632 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4633 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4634 ]
4635 );
4636 });
4637
4638 view.update(cx, |view, cx| {
4639 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4640 assert_eq!(
4641 view.selected_display_ranges(cx),
4642 &[
4643 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4644 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4645 ]
4646 );
4647 });
4648
4649 view.update(cx, |view, cx| {
4650 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4651 assert_eq!(
4652 view.selected_display_ranges(cx),
4653 &[
4654 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4655 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4656 ]
4657 );
4658 });
4659
4660 view.update(cx, |view, cx| {
4661 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4662 assert_eq!(
4663 view.selected_display_ranges(cx),
4664 &[
4665 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4666 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4667 ]
4668 );
4669 });
4670
4671 view.update(cx, |view, cx| {
4672 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4673 assert_eq!(
4674 view.selected_display_ranges(cx),
4675 &[
4676 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4677 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4678 ]
4679 );
4680 });
4681
4682 view.update(cx, |view, cx| {
4683 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4684 assert_eq!(
4685 view.selected_display_ranges(cx),
4686 &[
4687 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4688 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4689 ]
4690 );
4691 });
4692
4693 view.update(cx, |view, cx| {
4694 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4695 assert_eq!(
4696 view.selected_display_ranges(cx),
4697 &[
4698 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4699 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4700 ]
4701 );
4702 });
4703
4704 view.update(cx, |view, cx| {
4705 view.move_right(&MoveRight, cx);
4706 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4707 assert_eq!(
4708 view.selected_display_ranges(cx),
4709 &[
4710 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4711 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4712 ]
4713 );
4714 });
4715
4716 view.update(cx, |view, cx| {
4717 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4718 assert_eq!(
4719 view.selected_display_ranges(cx),
4720 &[
4721 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4722 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4723 ]
4724 );
4725 });
4726
4727 view.update(cx, |view, cx| {
4728 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4729 assert_eq!(
4730 view.selected_display_ranges(cx),
4731 &[
4732 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4733 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4734 ]
4735 );
4736 });
4737 }
4738
4739 #[gpui::test]
4740 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4741 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4742 let settings = EditorSettings::test(&cx);
4743 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4744
4745 view.update(cx, |view, cx| {
4746 view.set_wrap_width(Some(140.), cx);
4747 assert_eq!(
4748 view.display_text(cx),
4749 "use one::{\n two::three::\n four::five\n};"
4750 );
4751
4752 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4753 .unwrap();
4754
4755 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4756 assert_eq!(
4757 view.selected_display_ranges(cx),
4758 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4759 );
4760
4761 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4762 assert_eq!(
4763 view.selected_display_ranges(cx),
4764 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4765 );
4766
4767 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4768 assert_eq!(
4769 view.selected_display_ranges(cx),
4770 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4771 );
4772
4773 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4774 assert_eq!(
4775 view.selected_display_ranges(cx),
4776 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4777 );
4778
4779 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4780 assert_eq!(
4781 view.selected_display_ranges(cx),
4782 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4783 );
4784
4785 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4786 assert_eq!(
4787 view.selected_display_ranges(cx),
4788 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4789 );
4790 });
4791 }
4792
4793 #[gpui::test]
4794 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4795 let buffer = MultiBuffer::build_simple("one two three four", cx);
4796 let settings = EditorSettings::test(&cx);
4797 let (_, view) = cx.add_window(Default::default(), |cx| {
4798 build_editor(buffer.clone(), settings, cx)
4799 });
4800
4801 view.update(cx, |view, cx| {
4802 view.select_display_ranges(
4803 &[
4804 // an empty selection - the preceding word fragment is deleted
4805 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4806 // characters selected - they are deleted
4807 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4808 ],
4809 cx,
4810 )
4811 .unwrap();
4812 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4813 });
4814
4815 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4816
4817 view.update(cx, |view, cx| {
4818 view.select_display_ranges(
4819 &[
4820 // an empty selection - the following word fragment is deleted
4821 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4822 // characters selected - they are deleted
4823 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4824 ],
4825 cx,
4826 )
4827 .unwrap();
4828 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4829 });
4830
4831 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4832 }
4833
4834 #[gpui::test]
4835 fn test_newline(cx: &mut gpui::MutableAppContext) {
4836 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4837 let settings = EditorSettings::test(&cx);
4838 let (_, view) = cx.add_window(Default::default(), |cx| {
4839 build_editor(buffer.clone(), settings, cx)
4840 });
4841
4842 view.update(cx, |view, cx| {
4843 view.select_display_ranges(
4844 &[
4845 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4846 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4847 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4848 ],
4849 cx,
4850 )
4851 .unwrap();
4852
4853 view.newline(&Newline, cx);
4854 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4855 });
4856 }
4857
4858 #[gpui::test]
4859 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4860 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4861 let settings = EditorSettings::test(&cx);
4862 let (_, view) = cx.add_window(Default::default(), |cx| {
4863 build_editor(buffer.clone(), settings, cx)
4864 });
4865
4866 view.update(cx, |view, cx| {
4867 // two selections on the same line
4868 view.select_display_ranges(
4869 &[
4870 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4871 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4872 ],
4873 cx,
4874 )
4875 .unwrap();
4876
4877 // indent from mid-tabstop to full tabstop
4878 view.tab(&Tab, cx);
4879 assert_eq!(view.text(cx), " one two\nthree\n four");
4880 assert_eq!(
4881 view.selected_display_ranges(cx),
4882 &[
4883 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4884 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4885 ]
4886 );
4887
4888 // outdent from 1 tabstop to 0 tabstops
4889 view.outdent(&Outdent, cx);
4890 assert_eq!(view.text(cx), "one two\nthree\n four");
4891 assert_eq!(
4892 view.selected_display_ranges(cx),
4893 &[
4894 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4895 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4896 ]
4897 );
4898
4899 // select across line ending
4900 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4901 .unwrap();
4902
4903 // indent and outdent affect only the preceding line
4904 view.tab(&Tab, cx);
4905 assert_eq!(view.text(cx), "one two\n three\n four");
4906 assert_eq!(
4907 view.selected_display_ranges(cx),
4908 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4909 );
4910 view.outdent(&Outdent, cx);
4911 assert_eq!(view.text(cx), "one two\nthree\n four");
4912 assert_eq!(
4913 view.selected_display_ranges(cx),
4914 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4915 );
4916 });
4917 }
4918
4919 #[gpui::test]
4920 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4921 let buffer =
4922 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4923 let settings = EditorSettings::test(&cx);
4924 let (_, view) = cx.add_window(Default::default(), |cx| {
4925 build_editor(buffer.clone(), settings, cx)
4926 });
4927
4928 view.update(cx, |view, cx| {
4929 view.select_display_ranges(
4930 &[
4931 // an empty selection - the preceding character is deleted
4932 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4933 // one character selected - it is deleted
4934 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4935 // a line suffix selected - it is deleted
4936 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4937 ],
4938 cx,
4939 )
4940 .unwrap();
4941 view.backspace(&Backspace, cx);
4942 });
4943
4944 assert_eq!(
4945 buffer.read(cx).read(cx).text(),
4946 "oe two three\nfou five six\nseven ten\n"
4947 );
4948 }
4949
4950 #[gpui::test]
4951 fn test_delete(cx: &mut gpui::MutableAppContext) {
4952 let buffer =
4953 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4954 let settings = EditorSettings::test(&cx);
4955 let (_, view) = cx.add_window(Default::default(), |cx| {
4956 build_editor(buffer.clone(), settings, cx)
4957 });
4958
4959 view.update(cx, |view, cx| {
4960 view.select_display_ranges(
4961 &[
4962 // an empty selection - the following character is deleted
4963 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4964 // one character selected - it is deleted
4965 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4966 // a line suffix selected - it is deleted
4967 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4968 ],
4969 cx,
4970 )
4971 .unwrap();
4972 view.delete(&Delete, cx);
4973 });
4974
4975 assert_eq!(
4976 buffer.read(cx).read(cx).text(),
4977 "on two three\nfou five six\nseven ten\n"
4978 );
4979 }
4980
4981 #[gpui::test]
4982 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4983 let settings = EditorSettings::test(&cx);
4984 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4985 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4986 view.update(cx, |view, cx| {
4987 view.select_display_ranges(
4988 &[
4989 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4990 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4991 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4992 ],
4993 cx,
4994 )
4995 .unwrap();
4996 view.delete_line(&DeleteLine, cx);
4997 assert_eq!(view.display_text(cx), "ghi");
4998 assert_eq!(
4999 view.selected_display_ranges(cx),
5000 vec![
5001 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5002 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5003 ]
5004 );
5005 });
5006
5007 let settings = EditorSettings::test(&cx);
5008 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5009 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5010 view.update(cx, |view, cx| {
5011 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
5012 .unwrap();
5013 view.delete_line(&DeleteLine, cx);
5014 assert_eq!(view.display_text(cx), "ghi\n");
5015 assert_eq!(
5016 view.selected_display_ranges(cx),
5017 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5018 );
5019 });
5020 }
5021
5022 #[gpui::test]
5023 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5024 let settings = EditorSettings::test(&cx);
5025 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5026 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5027 view.update(cx, |view, cx| {
5028 view.select_display_ranges(
5029 &[
5030 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5031 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5032 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5033 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5034 ],
5035 cx,
5036 )
5037 .unwrap();
5038 view.duplicate_line(&DuplicateLine, cx);
5039 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5040 assert_eq!(
5041 view.selected_display_ranges(cx),
5042 vec![
5043 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5044 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5045 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5046 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5047 ]
5048 );
5049 });
5050
5051 let settings = EditorSettings::test(&cx);
5052 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5053 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5054 view.update(cx, |view, cx| {
5055 view.select_display_ranges(
5056 &[
5057 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5058 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5059 ],
5060 cx,
5061 )
5062 .unwrap();
5063 view.duplicate_line(&DuplicateLine, cx);
5064 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5065 assert_eq!(
5066 view.selected_display_ranges(cx),
5067 vec![
5068 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5069 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5070 ]
5071 );
5072 });
5073 }
5074
5075 #[gpui::test]
5076 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5077 let settings = EditorSettings::test(&cx);
5078 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5079 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5080 view.update(cx, |view, cx| {
5081 view.fold_ranges(
5082 vec![
5083 Point::new(0, 2)..Point::new(1, 2),
5084 Point::new(2, 3)..Point::new(4, 1),
5085 Point::new(7, 0)..Point::new(8, 4),
5086 ],
5087 cx,
5088 );
5089 view.select_display_ranges(
5090 &[
5091 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5092 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5093 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5094 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5095 ],
5096 cx,
5097 )
5098 .unwrap();
5099 assert_eq!(
5100 view.display_text(cx),
5101 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5102 );
5103
5104 view.move_line_up(&MoveLineUp, cx);
5105 assert_eq!(
5106 view.display_text(cx),
5107 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5108 );
5109 assert_eq!(
5110 view.selected_display_ranges(cx),
5111 vec![
5112 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5113 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5114 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5115 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5116 ]
5117 );
5118 });
5119
5120 view.update(cx, |view, cx| {
5121 view.move_line_down(&MoveLineDown, cx);
5122 assert_eq!(
5123 view.display_text(cx),
5124 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5125 );
5126 assert_eq!(
5127 view.selected_display_ranges(cx),
5128 vec![
5129 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5130 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5131 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5132 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5133 ]
5134 );
5135 });
5136
5137 view.update(cx, |view, cx| {
5138 view.move_line_down(&MoveLineDown, cx);
5139 assert_eq!(
5140 view.display_text(cx),
5141 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5142 );
5143 assert_eq!(
5144 view.selected_display_ranges(cx),
5145 vec![
5146 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5147 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5148 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5149 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5150 ]
5151 );
5152 });
5153
5154 view.update(cx, |view, cx| {
5155 view.move_line_up(&MoveLineUp, cx);
5156 assert_eq!(
5157 view.display_text(cx),
5158 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5159 );
5160 assert_eq!(
5161 view.selected_display_ranges(cx),
5162 vec![
5163 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5164 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5165 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5166 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5167 ]
5168 );
5169 });
5170 }
5171
5172 #[gpui::test]
5173 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5174 let settings = EditorSettings::test(&cx);
5175 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5176 let (_, editor) =
5177 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5178 editor.update(cx, |editor, cx| {
5179 editor.insert_blocks(
5180 [BlockProperties {
5181 position: Point::new(2, 0),
5182 disposition: BlockDisposition::Below,
5183 height: 1,
5184 render: Arc::new(|_| Empty::new().boxed()),
5185 }],
5186 cx,
5187 );
5188 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5189 editor.move_line_down(&MoveLineDown, cx);
5190 });
5191 }
5192
5193 #[gpui::test]
5194 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5195 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5196 let settings = EditorSettings::test(&cx);
5197 let view = cx
5198 .add_window(Default::default(), |cx| {
5199 build_editor(buffer.clone(), settings, cx)
5200 })
5201 .1;
5202
5203 // Cut with three selections. Clipboard text is divided into three slices.
5204 view.update(cx, |view, cx| {
5205 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5206 view.cut(&Cut, cx);
5207 assert_eq!(view.display_text(cx), "two four six ");
5208 });
5209
5210 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5211 view.update(cx, |view, cx| {
5212 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5213 view.paste(&Paste, cx);
5214 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5215 assert_eq!(
5216 view.selected_display_ranges(cx),
5217 &[
5218 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5219 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5220 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5221 ]
5222 );
5223 });
5224
5225 // Paste again but with only two cursors. Since the number of cursors doesn't
5226 // match the number of slices in the clipboard, the entire clipboard text
5227 // is pasted at each cursor.
5228 view.update(cx, |view, cx| {
5229 view.select_ranges(vec![0..0, 31..31], None, cx);
5230 view.handle_input(&Input("( ".into()), cx);
5231 view.paste(&Paste, cx);
5232 view.handle_input(&Input(") ".into()), cx);
5233 assert_eq!(
5234 view.display_text(cx),
5235 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5236 );
5237 });
5238
5239 view.update(cx, |view, cx| {
5240 view.select_ranges(vec![0..0], None, cx);
5241 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5242 assert_eq!(
5243 view.display_text(cx),
5244 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5245 );
5246 });
5247
5248 // Cut with three selections, one of which is full-line.
5249 view.update(cx, |view, cx| {
5250 view.select_display_ranges(
5251 &[
5252 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5253 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5254 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5255 ],
5256 cx,
5257 )
5258 .unwrap();
5259 view.cut(&Cut, cx);
5260 assert_eq!(
5261 view.display_text(cx),
5262 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5263 );
5264 });
5265
5266 // Paste with three selections, noticing how the copied selection that was full-line
5267 // gets inserted before the second cursor.
5268 view.update(cx, |view, cx| {
5269 view.select_display_ranges(
5270 &[
5271 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5272 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5273 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5274 ],
5275 cx,
5276 )
5277 .unwrap();
5278 view.paste(&Paste, cx);
5279 assert_eq!(
5280 view.display_text(cx),
5281 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5282 );
5283 assert_eq!(
5284 view.selected_display_ranges(cx),
5285 &[
5286 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5287 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5288 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5289 ]
5290 );
5291 });
5292
5293 // Copy with a single cursor only, which writes the whole line into the clipboard.
5294 view.update(cx, |view, cx| {
5295 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5296 .unwrap();
5297 view.copy(&Copy, cx);
5298 });
5299
5300 // Paste with three selections, noticing how the copied full-line selection is inserted
5301 // before the empty selections but replaces the selection that is non-empty.
5302 view.update(cx, |view, cx| {
5303 view.select_display_ranges(
5304 &[
5305 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5306 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5307 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5308 ],
5309 cx,
5310 )
5311 .unwrap();
5312 view.paste(&Paste, cx);
5313 assert_eq!(
5314 view.display_text(cx),
5315 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5316 );
5317 assert_eq!(
5318 view.selected_display_ranges(cx),
5319 &[
5320 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5321 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5322 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5323 ]
5324 );
5325 });
5326 }
5327
5328 #[gpui::test]
5329 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5330 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5331 let settings = EditorSettings::test(&cx);
5332 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5333 view.update(cx, |view, cx| {
5334 view.select_all(&SelectAll, cx);
5335 assert_eq!(
5336 view.selected_display_ranges(cx),
5337 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5338 );
5339 });
5340 }
5341
5342 #[gpui::test]
5343 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5344 let settings = EditorSettings::test(&cx);
5345 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5346 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5347 view.update(cx, |view, cx| {
5348 view.select_display_ranges(
5349 &[
5350 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5351 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5352 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5353 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5354 ],
5355 cx,
5356 )
5357 .unwrap();
5358 view.select_line(&SelectLine, cx);
5359 assert_eq!(
5360 view.selected_display_ranges(cx),
5361 vec![
5362 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5363 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5364 ]
5365 );
5366 });
5367
5368 view.update(cx, |view, cx| {
5369 view.select_line(&SelectLine, cx);
5370 assert_eq!(
5371 view.selected_display_ranges(cx),
5372 vec![
5373 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5374 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5375 ]
5376 );
5377 });
5378
5379 view.update(cx, |view, cx| {
5380 view.select_line(&SelectLine, cx);
5381 assert_eq!(
5382 view.selected_display_ranges(cx),
5383 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5384 );
5385 });
5386 }
5387
5388 #[gpui::test]
5389 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5390 let settings = EditorSettings::test(&cx);
5391 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5392 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5393 view.update(cx, |view, cx| {
5394 view.fold_ranges(
5395 vec![
5396 Point::new(0, 2)..Point::new(1, 2),
5397 Point::new(2, 3)..Point::new(4, 1),
5398 Point::new(7, 0)..Point::new(8, 4),
5399 ],
5400 cx,
5401 );
5402 view.select_display_ranges(
5403 &[
5404 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5405 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5406 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5407 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5408 ],
5409 cx,
5410 )
5411 .unwrap();
5412 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5413 });
5414
5415 view.update(cx, |view, cx| {
5416 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5417 assert_eq!(
5418 view.display_text(cx),
5419 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5420 );
5421 assert_eq!(
5422 view.selected_display_ranges(cx),
5423 [
5424 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5425 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5426 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5427 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5428 ]
5429 );
5430 });
5431
5432 view.update(cx, |view, cx| {
5433 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5434 .unwrap();
5435 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5436 assert_eq!(
5437 view.display_text(cx),
5438 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5439 );
5440 assert_eq!(
5441 view.selected_display_ranges(cx),
5442 [
5443 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5444 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5445 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5446 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5447 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5448 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5449 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5450 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5451 ]
5452 );
5453 });
5454 }
5455
5456 #[gpui::test]
5457 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5458 let settings = EditorSettings::test(&cx);
5459 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5460 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5461
5462 view.update(cx, |view, cx| {
5463 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5464 .unwrap();
5465 });
5466 view.update(cx, |view, cx| {
5467 view.add_selection_above(&AddSelectionAbove, cx);
5468 assert_eq!(
5469 view.selected_display_ranges(cx),
5470 vec![
5471 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5472 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5473 ]
5474 );
5475 });
5476
5477 view.update(cx, |view, cx| {
5478 view.add_selection_above(&AddSelectionAbove, cx);
5479 assert_eq!(
5480 view.selected_display_ranges(cx),
5481 vec![
5482 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5483 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5484 ]
5485 );
5486 });
5487
5488 view.update(cx, |view, cx| {
5489 view.add_selection_below(&AddSelectionBelow, cx);
5490 assert_eq!(
5491 view.selected_display_ranges(cx),
5492 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5493 );
5494 });
5495
5496 view.update(cx, |view, cx| {
5497 view.add_selection_below(&AddSelectionBelow, cx);
5498 assert_eq!(
5499 view.selected_display_ranges(cx),
5500 vec![
5501 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5502 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5503 ]
5504 );
5505 });
5506
5507 view.update(cx, |view, cx| {
5508 view.add_selection_below(&AddSelectionBelow, cx);
5509 assert_eq!(
5510 view.selected_display_ranges(cx),
5511 vec![
5512 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5513 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5514 ]
5515 );
5516 });
5517
5518 view.update(cx, |view, cx| {
5519 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5520 .unwrap();
5521 });
5522 view.update(cx, |view, cx| {
5523 view.add_selection_below(&AddSelectionBelow, cx);
5524 assert_eq!(
5525 view.selected_display_ranges(cx),
5526 vec![
5527 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5528 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5529 ]
5530 );
5531 });
5532
5533 view.update(cx, |view, cx| {
5534 view.add_selection_below(&AddSelectionBelow, cx);
5535 assert_eq!(
5536 view.selected_display_ranges(cx),
5537 vec![
5538 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5539 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5540 ]
5541 );
5542 });
5543
5544 view.update(cx, |view, cx| {
5545 view.add_selection_above(&AddSelectionAbove, cx);
5546 assert_eq!(
5547 view.selected_display_ranges(cx),
5548 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5549 );
5550 });
5551
5552 view.update(cx, |view, cx| {
5553 view.add_selection_above(&AddSelectionAbove, cx);
5554 assert_eq!(
5555 view.selected_display_ranges(cx),
5556 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5557 );
5558 });
5559
5560 view.update(cx, |view, cx| {
5561 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5562 .unwrap();
5563 view.add_selection_below(&AddSelectionBelow, cx);
5564 assert_eq!(
5565 view.selected_display_ranges(cx),
5566 vec![
5567 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5568 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5569 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5570 ]
5571 );
5572 });
5573
5574 view.update(cx, |view, cx| {
5575 view.add_selection_below(&AddSelectionBelow, cx);
5576 assert_eq!(
5577 view.selected_display_ranges(cx),
5578 vec![
5579 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5580 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5581 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5582 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5583 ]
5584 );
5585 });
5586
5587 view.update(cx, |view, cx| {
5588 view.add_selection_above(&AddSelectionAbove, cx);
5589 assert_eq!(
5590 view.selected_display_ranges(cx),
5591 vec![
5592 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5593 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5594 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5595 ]
5596 );
5597 });
5598
5599 view.update(cx, |view, cx| {
5600 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5601 .unwrap();
5602 });
5603 view.update(cx, |view, cx| {
5604 view.add_selection_above(&AddSelectionAbove, cx);
5605 assert_eq!(
5606 view.selected_display_ranges(cx),
5607 vec![
5608 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5609 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5610 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5611 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5612 ]
5613 );
5614 });
5615
5616 view.update(cx, |view, cx| {
5617 view.add_selection_below(&AddSelectionBelow, cx);
5618 assert_eq!(
5619 view.selected_display_ranges(cx),
5620 vec![
5621 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5622 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5623 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5624 ]
5625 );
5626 });
5627 }
5628
5629 #[gpui::test]
5630 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5631 let settings = cx.read(EditorSettings::test);
5632 let language = Some(Arc::new(Language::new(
5633 LanguageConfig::default(),
5634 Some(tree_sitter_rust::language()),
5635 )));
5636
5637 let text = r#"
5638 use mod1::mod2::{mod3, mod4};
5639
5640 fn fn_1(param1: bool, param2: &str) {
5641 let var1 = "text";
5642 }
5643 "#
5644 .unindent();
5645
5646 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5647 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5648 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5649 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5650 .await;
5651
5652 view.update(&mut cx, |view, cx| {
5653 view.select_display_ranges(
5654 &[
5655 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5656 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5657 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5658 ],
5659 cx,
5660 )
5661 .unwrap();
5662 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5663 });
5664 assert_eq!(
5665 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5666 &[
5667 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5668 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5669 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5670 ]
5671 );
5672
5673 view.update(&mut cx, |view, cx| {
5674 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5675 });
5676 assert_eq!(
5677 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5678 &[
5679 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5680 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5681 ]
5682 );
5683
5684 view.update(&mut cx, |view, cx| {
5685 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5686 });
5687 assert_eq!(
5688 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5689 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5690 );
5691
5692 // Trying to expand the selected syntax node one more time has no effect.
5693 view.update(&mut cx, |view, cx| {
5694 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5695 });
5696 assert_eq!(
5697 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5698 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5699 );
5700
5701 view.update(&mut cx, |view, cx| {
5702 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5703 });
5704 assert_eq!(
5705 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5706 &[
5707 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5708 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5709 ]
5710 );
5711
5712 view.update(&mut cx, |view, cx| {
5713 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5714 });
5715 assert_eq!(
5716 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5717 &[
5718 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5719 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5720 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5721 ]
5722 );
5723
5724 view.update(&mut cx, |view, cx| {
5725 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5726 });
5727 assert_eq!(
5728 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5729 &[
5730 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5731 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5732 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5733 ]
5734 );
5735
5736 // Trying to shrink the selected syntax node one more time has no effect.
5737 view.update(&mut cx, |view, cx| {
5738 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5739 });
5740 assert_eq!(
5741 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5742 &[
5743 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5744 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5745 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5746 ]
5747 );
5748
5749 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5750 // a fold.
5751 view.update(&mut cx, |view, cx| {
5752 view.fold_ranges(
5753 vec![
5754 Point::new(0, 21)..Point::new(0, 24),
5755 Point::new(3, 20)..Point::new(3, 22),
5756 ],
5757 cx,
5758 );
5759 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5760 });
5761 assert_eq!(
5762 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5763 &[
5764 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5765 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5766 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5767 ]
5768 );
5769 }
5770
5771 #[gpui::test]
5772 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5773 let settings = cx.read(EditorSettings::test);
5774 let language = Some(Arc::new(
5775 Language::new(
5776 LanguageConfig {
5777 brackets: vec![
5778 BracketPair {
5779 start: "{".to_string(),
5780 end: "}".to_string(),
5781 close: false,
5782 newline: true,
5783 },
5784 BracketPair {
5785 start: "(".to_string(),
5786 end: ")".to_string(),
5787 close: false,
5788 newline: true,
5789 },
5790 ],
5791 ..Default::default()
5792 },
5793 Some(tree_sitter_rust::language()),
5794 )
5795 .with_indents_query(
5796 r#"
5797 (_ "(" ")" @end) @indent
5798 (_ "{" "}" @end) @indent
5799 "#,
5800 )
5801 .unwrap(),
5802 ));
5803
5804 let text = "fn a() {}";
5805
5806 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5807 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5808 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5809 editor
5810 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5811 .await;
5812
5813 editor.update(&mut cx, |editor, cx| {
5814 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5815 editor.newline(&Newline, cx);
5816 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5817 assert_eq!(
5818 editor.selected_ranges(cx),
5819 &[
5820 Point::new(1, 4)..Point::new(1, 4),
5821 Point::new(3, 4)..Point::new(3, 4),
5822 Point::new(5, 0)..Point::new(5, 0)
5823 ]
5824 );
5825 });
5826 }
5827
5828 #[gpui::test]
5829 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5830 let settings = cx.read(EditorSettings::test);
5831 let language = Some(Arc::new(Language::new(
5832 LanguageConfig {
5833 brackets: vec![
5834 BracketPair {
5835 start: "{".to_string(),
5836 end: "}".to_string(),
5837 close: true,
5838 newline: true,
5839 },
5840 BracketPair {
5841 start: "/*".to_string(),
5842 end: " */".to_string(),
5843 close: true,
5844 newline: true,
5845 },
5846 ],
5847 ..Default::default()
5848 },
5849 Some(tree_sitter_rust::language()),
5850 )));
5851
5852 let text = r#"
5853 a
5854
5855 /
5856
5857 "#
5858 .unindent();
5859
5860 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5861 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5862 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5863 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5864 .await;
5865
5866 view.update(&mut cx, |view, cx| {
5867 view.select_display_ranges(
5868 &[
5869 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5870 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5871 ],
5872 cx,
5873 )
5874 .unwrap();
5875 view.handle_input(&Input("{".to_string()), cx);
5876 view.handle_input(&Input("{".to_string()), cx);
5877 view.handle_input(&Input("{".to_string()), cx);
5878 assert_eq!(
5879 view.text(cx),
5880 "
5881 {{{}}}
5882 {{{}}}
5883 /
5884
5885 "
5886 .unindent()
5887 );
5888
5889 view.move_right(&MoveRight, cx);
5890 view.handle_input(&Input("}".to_string()), cx);
5891 view.handle_input(&Input("}".to_string()), cx);
5892 view.handle_input(&Input("}".to_string()), cx);
5893 assert_eq!(
5894 view.text(cx),
5895 "
5896 {{{}}}}
5897 {{{}}}}
5898 /
5899
5900 "
5901 .unindent()
5902 );
5903
5904 view.undo(&Undo, cx);
5905 view.handle_input(&Input("/".to_string()), cx);
5906 view.handle_input(&Input("*".to_string()), cx);
5907 assert_eq!(
5908 view.text(cx),
5909 "
5910 /* */
5911 /* */
5912 /
5913
5914 "
5915 .unindent()
5916 );
5917
5918 view.undo(&Undo, cx);
5919 view.select_display_ranges(
5920 &[
5921 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5922 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5923 ],
5924 cx,
5925 )
5926 .unwrap();
5927 view.handle_input(&Input("*".to_string()), cx);
5928 assert_eq!(
5929 view.text(cx),
5930 "
5931 a
5932
5933 /*
5934 *
5935 "
5936 .unindent()
5937 );
5938 });
5939 }
5940
5941 #[gpui::test]
5942 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5943 let settings = cx.read(EditorSettings::test);
5944 let language = Some(Arc::new(Language::new(
5945 LanguageConfig {
5946 line_comment: Some("// ".to_string()),
5947 ..Default::default()
5948 },
5949 Some(tree_sitter_rust::language()),
5950 )));
5951
5952 let text = "
5953 fn a() {
5954 //b();
5955 // c();
5956 // d();
5957 }
5958 "
5959 .unindent();
5960
5961 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5962 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5963 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5964
5965 view.update(&mut cx, |editor, cx| {
5966 // If multiple selections intersect a line, the line is only
5967 // toggled once.
5968 editor
5969 .select_display_ranges(
5970 &[
5971 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5972 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5973 ],
5974 cx,
5975 )
5976 .unwrap();
5977 editor.toggle_comments(&ToggleComments, cx);
5978 assert_eq!(
5979 editor.text(cx),
5980 "
5981 fn a() {
5982 b();
5983 c();
5984 d();
5985 }
5986 "
5987 .unindent()
5988 );
5989
5990 // The comment prefix is inserted at the same column for every line
5991 // in a selection.
5992 editor
5993 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5994 .unwrap();
5995 editor.toggle_comments(&ToggleComments, cx);
5996 assert_eq!(
5997 editor.text(cx),
5998 "
5999 fn a() {
6000 // b();
6001 // c();
6002 // d();
6003 }
6004 "
6005 .unindent()
6006 );
6007
6008 // If a selection ends at the beginning of a line, that line is not toggled.
6009 editor
6010 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
6011 .unwrap();
6012 editor.toggle_comments(&ToggleComments, cx);
6013 assert_eq!(
6014 editor.text(cx),
6015 "
6016 fn a() {
6017 // b();
6018 c();
6019 // d();
6020 }
6021 "
6022 .unindent()
6023 );
6024 });
6025 }
6026
6027 #[gpui::test]
6028 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6029 let settings = EditorSettings::test(cx);
6030 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6031 let multibuffer = cx.add_model(|cx| {
6032 let mut multibuffer = MultiBuffer::new(0);
6033 multibuffer.push_excerpt(
6034 ExcerptProperties {
6035 buffer: &buffer,
6036 range: Point::new(0, 0)..Point::new(0, 4),
6037 },
6038 cx,
6039 );
6040 multibuffer.push_excerpt(
6041 ExcerptProperties {
6042 buffer: &buffer,
6043 range: Point::new(1, 0)..Point::new(1, 4),
6044 },
6045 cx,
6046 );
6047 multibuffer
6048 });
6049
6050 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6051
6052 let (_, view) = cx.add_window(Default::default(), |cx| {
6053 build_editor(multibuffer, settings, cx)
6054 });
6055 view.update(cx, |view, cx| {
6056 view.select_display_ranges(
6057 &[
6058 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6059 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6060 ],
6061 cx,
6062 )
6063 .unwrap();
6064
6065 view.handle_input(&Input("X".to_string()), cx);
6066 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6067 assert_eq!(
6068 view.selected_display_ranges(cx),
6069 &[
6070 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6071 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6072 ]
6073 )
6074 });
6075 }
6076
6077 #[gpui::test]
6078 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6079 let settings = EditorSettings::test(cx);
6080 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6081 let multibuffer = cx.add_model(|cx| {
6082 let mut multibuffer = MultiBuffer::new(0);
6083 multibuffer.push_excerpt(
6084 ExcerptProperties {
6085 buffer: &buffer,
6086 range: Point::new(0, 0)..Point::new(1, 4),
6087 },
6088 cx,
6089 );
6090 multibuffer.push_excerpt(
6091 ExcerptProperties {
6092 buffer: &buffer,
6093 range: Point::new(1, 0)..Point::new(2, 4),
6094 },
6095 cx,
6096 );
6097 multibuffer
6098 });
6099
6100 assert_eq!(
6101 multibuffer.read(cx).read(cx).text(),
6102 "aaaa\nbbbb\nbbbb\ncccc"
6103 );
6104
6105 let (_, view) = cx.add_window(Default::default(), |cx| {
6106 build_editor(multibuffer, settings, cx)
6107 });
6108 view.update(cx, |view, cx| {
6109 view.select_display_ranges(
6110 &[
6111 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6112 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6113 ],
6114 cx,
6115 )
6116 .unwrap();
6117
6118 view.handle_input(&Input("X".to_string()), cx);
6119 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6120 assert_eq!(
6121 view.selected_display_ranges(cx),
6122 &[
6123 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6124 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6125 ]
6126 )
6127 });
6128 }
6129
6130 #[gpui::test]
6131 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6132 let settings = cx.read(EditorSettings::test);
6133 let language = Some(Arc::new(Language::new(
6134 LanguageConfig {
6135 brackets: vec![
6136 BracketPair {
6137 start: "{".to_string(),
6138 end: "}".to_string(),
6139 close: true,
6140 newline: true,
6141 },
6142 BracketPair {
6143 start: "/* ".to_string(),
6144 end: " */".to_string(),
6145 close: true,
6146 newline: true,
6147 },
6148 ],
6149 ..Default::default()
6150 },
6151 Some(tree_sitter_rust::language()),
6152 )));
6153
6154 let text = concat!(
6155 "{ }\n", // Suppress rustfmt
6156 " x\n", //
6157 " /* */\n", //
6158 "x\n", //
6159 "{{} }\n", //
6160 );
6161
6162 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6163 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6164 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6165 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6166 .await;
6167
6168 view.update(&mut cx, |view, cx| {
6169 view.select_display_ranges(
6170 &[
6171 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6172 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6173 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6174 ],
6175 cx,
6176 )
6177 .unwrap();
6178 view.newline(&Newline, cx);
6179
6180 assert_eq!(
6181 view.buffer().read(cx).read(cx).text(),
6182 concat!(
6183 "{ \n", // Suppress rustfmt
6184 "\n", //
6185 "}\n", //
6186 " x\n", //
6187 " /* \n", //
6188 " \n", //
6189 " */\n", //
6190 "x\n", //
6191 "{{} \n", //
6192 "}\n", //
6193 )
6194 );
6195 });
6196 }
6197
6198 impl Editor {
6199 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
6200 &self,
6201 cx: &mut MutableAppContext,
6202 ) -> Vec<Range<D>> {
6203 self.local_selections::<D>(cx)
6204 .iter()
6205 .map(|s| {
6206 if s.reversed {
6207 s.end.clone()..s.start.clone()
6208 } else {
6209 s.start.clone()..s.end.clone()
6210 }
6211 })
6212 .collect()
6213 }
6214
6215 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
6216 let display_map = self
6217 .display_map
6218 .update(cx, |display_map, cx| display_map.snapshot(cx));
6219 self.selections
6220 .iter()
6221 .chain(
6222 self.pending_selection
6223 .as_ref()
6224 .map(|pending| &pending.selection),
6225 )
6226 .map(|s| {
6227 if s.reversed {
6228 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
6229 } else {
6230 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
6231 }
6232 })
6233 .collect()
6234 }
6235 }
6236
6237 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6238 let point = DisplayPoint::new(row as u32, column as u32);
6239 point..point
6240 }
6241
6242 fn build_editor(
6243 buffer: ModelHandle<MultiBuffer>,
6244 settings: EditorSettings,
6245 cx: &mut ViewContext<Editor>,
6246 ) -> Editor {
6247 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6248 }
6249}
6250
6251trait RangeExt<T> {
6252 fn sorted(&self) -> Range<T>;
6253 fn to_inclusive(&self) -> RangeInclusive<T>;
6254}
6255
6256impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6257 fn sorted(&self) -> Self {
6258 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6259 }
6260
6261 fn to_inclusive(&self) -> RangeInclusive<T> {
6262 self.start.clone()..=self.end.clone()
6263 }
6264}