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 AnchorRangeExt as _, BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point,
29 Selection, SelectionGoal, TransactionId,
30};
31pub use multi_buffer::{
32 Anchor, AnchorRangeExt, ExcerptId, ExcerptProperties, MultiBuffer, ToOffset, ToPoint,
33};
34use multi_buffer::{MultiBufferChunks, MultiBufferSnapshot};
35use postage::watch;
36use serde::{Deserialize, Serialize};
37use smallvec::SmallVec;
38use smol::Timer;
39use std::{
40 cmp,
41 iter::{self, FromIterator},
42 mem,
43 ops::{Deref, Range, RangeInclusive, Sub},
44 sync::Arc,
45 time::{Duration, Instant},
46};
47use sum_tree::Bias;
48use text::rope::TextDimension;
49use theme::{DiagnosticStyle, EditorStyle};
50use util::post_inc;
51use workspace::{ItemNavHistory, PathOpener, Workspace};
52
53const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
54const MAX_LINE_LEN: usize = 1024;
55const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
56
57action!(Cancel);
58action!(Backspace);
59action!(Delete);
60action!(Input, String);
61action!(Newline);
62action!(Tab);
63action!(Outdent);
64action!(DeleteLine);
65action!(DeleteToPreviousWordBoundary);
66action!(DeleteToNextWordBoundary);
67action!(DeleteToBeginningOfLine);
68action!(DeleteToEndOfLine);
69action!(CutToEndOfLine);
70action!(DuplicateLine);
71action!(MoveLineUp);
72action!(MoveLineDown);
73action!(Cut);
74action!(Copy);
75action!(Paste);
76action!(Undo);
77action!(Redo);
78action!(MoveUp);
79action!(MoveDown);
80action!(MoveLeft);
81action!(MoveRight);
82action!(MoveToPreviousWordBoundary);
83action!(MoveToNextWordBoundary);
84action!(MoveToBeginningOfLine);
85action!(MoveToEndOfLine);
86action!(MoveToBeginning);
87action!(MoveToEnd);
88action!(SelectUp);
89action!(SelectDown);
90action!(SelectLeft);
91action!(SelectRight);
92action!(SelectToPreviousWordBoundary);
93action!(SelectToNextWordBoundary);
94action!(SelectToBeginningOfLine, bool);
95action!(SelectToEndOfLine);
96action!(SelectToBeginning);
97action!(SelectToEnd);
98action!(SelectAll);
99action!(SelectLine);
100action!(SplitSelectionIntoLines);
101action!(AddSelectionAbove);
102action!(AddSelectionBelow);
103action!(SelectNext, bool);
104action!(ToggleComments);
105action!(SelectLargerSyntaxNode);
106action!(SelectSmallerSyntaxNode);
107action!(MoveToEnclosingBracket);
108action!(ShowNextDiagnostic);
109action!(GoToDefinition);
110action!(PageUp);
111action!(PageDown);
112action!(Fold);
113action!(Unfold);
114action!(FoldSelectedRanges);
115action!(Scroll, Vector2F);
116action!(Select, SelectPhase);
117
118pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
119 path_openers.push(Box::new(items::BufferOpener));
120 cx.add_bindings(vec![
121 Binding::new("escape", Cancel, Some("Editor")),
122 Binding::new("backspace", Backspace, Some("Editor")),
123 Binding::new("ctrl-h", Backspace, Some("Editor")),
124 Binding::new("delete", Delete, Some("Editor")),
125 Binding::new("ctrl-d", Delete, Some("Editor")),
126 Binding::new("enter", Newline, Some("Editor && mode == full")),
127 Binding::new(
128 "alt-enter",
129 Input("\n".into()),
130 Some("Editor && mode == auto_height"),
131 ),
132 Binding::new("tab", Tab, Some("Editor")),
133 Binding::new("shift-tab", Outdent, Some("Editor")),
134 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
135 Binding::new(
136 "alt-backspace",
137 DeleteToPreviousWordBoundary,
138 Some("Editor"),
139 ),
140 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
141 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
142 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
143 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
144 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
145 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
146 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
147 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
148 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
149 Binding::new("cmd-x", Cut, Some("Editor")),
150 Binding::new("cmd-c", Copy, Some("Editor")),
151 Binding::new("cmd-v", Paste, Some("Editor")),
152 Binding::new("cmd-z", Undo, Some("Editor")),
153 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
154 Binding::new("up", MoveUp, Some("Editor")),
155 Binding::new("down", MoveDown, Some("Editor")),
156 Binding::new("left", MoveLeft, Some("Editor")),
157 Binding::new("right", MoveRight, Some("Editor")),
158 Binding::new("ctrl-p", MoveUp, Some("Editor")),
159 Binding::new("ctrl-n", MoveDown, Some("Editor")),
160 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
161 Binding::new("ctrl-f", MoveRight, Some("Editor")),
162 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
163 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
164 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
165 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
166 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
167 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
168 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
169 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
170 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
171 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
172 Binding::new("shift-up", SelectUp, Some("Editor")),
173 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
174 Binding::new("shift-down", SelectDown, Some("Editor")),
175 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
176 Binding::new("shift-left", SelectLeft, Some("Editor")),
177 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
178 Binding::new("shift-right", SelectRight, Some("Editor")),
179 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
180 Binding::new(
181 "alt-shift-left",
182 SelectToPreviousWordBoundary,
183 Some("Editor"),
184 ),
185 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
186 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
187 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
188 Binding::new(
189 "cmd-shift-left",
190 SelectToBeginningOfLine(true),
191 Some("Editor"),
192 ),
193 Binding::new(
194 "ctrl-shift-A",
195 SelectToBeginningOfLine(true),
196 Some("Editor"),
197 ),
198 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
199 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
200 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
201 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
202 Binding::new("cmd-a", SelectAll, Some("Editor")),
203 Binding::new("cmd-l", SelectLine, Some("Editor")),
204 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
205 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
206 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
207 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
208 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
209 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
210 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
211 Binding::new("cmd-/", ToggleComments, Some("Editor")),
212 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
213 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
214 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
215 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
216 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
217 Binding::new("f12", GoToDefinition, Some("Editor")),
218 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
219 Binding::new("pageup", PageUp, Some("Editor")),
220 Binding::new("pagedown", PageDown, Some("Editor")),
221 Binding::new("alt-cmd-[", Fold, Some("Editor")),
222 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
223 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
224 ]);
225
226 cx.add_action(Editor::open_new);
227 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
228 cx.add_action(Editor::select);
229 cx.add_action(Editor::cancel);
230 cx.add_action(Editor::handle_input);
231 cx.add_action(Editor::newline);
232 cx.add_action(Editor::backspace);
233 cx.add_action(Editor::delete);
234 cx.add_action(Editor::tab);
235 cx.add_action(Editor::outdent);
236 cx.add_action(Editor::delete_line);
237 cx.add_action(Editor::delete_to_previous_word_boundary);
238 cx.add_action(Editor::delete_to_next_word_boundary);
239 cx.add_action(Editor::delete_to_beginning_of_line);
240 cx.add_action(Editor::delete_to_end_of_line);
241 cx.add_action(Editor::cut_to_end_of_line);
242 cx.add_action(Editor::duplicate_line);
243 cx.add_action(Editor::move_line_up);
244 cx.add_action(Editor::move_line_down);
245 cx.add_action(Editor::cut);
246 cx.add_action(Editor::copy);
247 cx.add_action(Editor::paste);
248 cx.add_action(Editor::undo);
249 cx.add_action(Editor::redo);
250 cx.add_action(Editor::move_up);
251 cx.add_action(Editor::move_down);
252 cx.add_action(Editor::move_left);
253 cx.add_action(Editor::move_right);
254 cx.add_action(Editor::move_to_previous_word_boundary);
255 cx.add_action(Editor::move_to_next_word_boundary);
256 cx.add_action(Editor::move_to_beginning_of_line);
257 cx.add_action(Editor::move_to_end_of_line);
258 cx.add_action(Editor::move_to_beginning);
259 cx.add_action(Editor::move_to_end);
260 cx.add_action(Editor::select_up);
261 cx.add_action(Editor::select_down);
262 cx.add_action(Editor::select_left);
263 cx.add_action(Editor::select_right);
264 cx.add_action(Editor::select_to_previous_word_boundary);
265 cx.add_action(Editor::select_to_next_word_boundary);
266 cx.add_action(Editor::select_to_beginning_of_line);
267 cx.add_action(Editor::select_to_end_of_line);
268 cx.add_action(Editor::select_to_beginning);
269 cx.add_action(Editor::select_to_end);
270 cx.add_action(Editor::select_all);
271 cx.add_action(Editor::select_line);
272 cx.add_action(Editor::split_selection_into_lines);
273 cx.add_action(Editor::add_selection_above);
274 cx.add_action(Editor::add_selection_below);
275 cx.add_action(Editor::select_next);
276 cx.add_action(Editor::toggle_comments);
277 cx.add_action(Editor::select_larger_syntax_node);
278 cx.add_action(Editor::select_smaller_syntax_node);
279 cx.add_action(Editor::move_to_enclosing_bracket);
280 cx.add_action(Editor::show_next_diagnostic);
281 cx.add_action(Editor::go_to_definition);
282 cx.add_action(Editor::page_up);
283 cx.add_action(Editor::page_down);
284 cx.add_action(Editor::fold);
285 cx.add_action(Editor::unfold);
286 cx.add_action(Editor::fold_selected_ranges);
287}
288
289trait SelectionExt {
290 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
291 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
292 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
293 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
294 -> Range<u32>;
295}
296
297#[derive(Clone, Debug)]
298pub enum SelectPhase {
299 Begin {
300 position: DisplayPoint,
301 add: bool,
302 click_count: usize,
303 },
304 BeginColumnar {
305 position: DisplayPoint,
306 overshoot: u32,
307 },
308 Extend {
309 position: DisplayPoint,
310 click_count: usize,
311 },
312 Update {
313 position: DisplayPoint,
314 overshoot: u32,
315 scroll_position: Vector2F,
316 },
317 End,
318}
319
320#[derive(Clone, Debug)]
321enum SelectMode {
322 Character,
323 Word(Range<Anchor>),
324 Line(Range<Anchor>),
325 All,
326}
327
328#[derive(PartialEq, Eq)]
329pub enum Autoscroll {
330 Fit,
331 Center,
332 Newest,
333}
334
335#[derive(Copy, Clone, PartialEq, Eq)]
336pub enum EditorMode {
337 SingleLine,
338 AutoHeight { max_lines: usize },
339 Full,
340}
341
342#[derive(Clone)]
343pub struct EditorSettings {
344 pub tab_size: usize,
345 pub soft_wrap: SoftWrap,
346 pub style: EditorStyle,
347}
348
349#[derive(Clone)]
350pub enum SoftWrap {
351 None,
352 EditorWidth,
353 Column(u32),
354}
355
356pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
357
358pub struct Editor {
359 handle: WeakViewHandle<Self>,
360 buffer: ModelHandle<MultiBuffer>,
361 display_map: ModelHandle<DisplayMap>,
362 next_selection_id: usize,
363 selections: Arc<[Selection<Anchor>]>,
364 pending_selection: Option<PendingSelection>,
365 columnar_selection_tail: Option<Anchor>,
366 add_selections_state: Option<AddSelectionsState>,
367 select_next_state: Option<SelectNextState>,
368 selection_history:
369 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
370 autoclose_stack: Vec<BracketPairState>,
371 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
372 active_diagnostics: Option<ActiveDiagnosticGroup>,
373 scroll_position: Vector2F,
374 scroll_top_anchor: Option<Anchor>,
375 autoscroll_request: Option<Autoscroll>,
376 build_settings: BuildSettings,
377 focused: bool,
378 show_local_cursors: bool,
379 blink_epoch: usize,
380 blinking_paused: bool,
381 mode: EditorMode,
382 placeholder_text: Option<Arc<str>>,
383 highlighted_rows: Option<Range<u32>>,
384 nav_history: Option<ItemNavHistory>,
385}
386
387pub struct EditorSnapshot {
388 pub mode: EditorMode,
389 pub display_snapshot: DisplaySnapshot,
390 pub placeholder_text: Option<Arc<str>>,
391 is_focused: bool,
392 scroll_position: Vector2F,
393 scroll_top_anchor: Option<Anchor>,
394}
395
396struct PendingSelection {
397 selection: Selection<Anchor>,
398 mode: SelectMode,
399}
400
401struct AddSelectionsState {
402 above: bool,
403 stack: Vec<usize>,
404}
405
406struct SelectNextState {
407 query: AhoCorasick,
408 wordwise: bool,
409 done: bool,
410}
411
412#[derive(Debug)]
413struct BracketPairState {
414 ranges: Vec<Range<Anchor>>,
415 pair: BracketPair,
416}
417
418#[derive(Debug)]
419struct ActiveDiagnosticGroup {
420 primary_range: Range<Anchor>,
421 primary_message: String,
422 blocks: HashMap<BlockId, Diagnostic>,
423 is_valid: bool,
424}
425
426#[derive(Serialize, Deserialize)]
427struct ClipboardSelection {
428 len: usize,
429 is_entire_line: bool,
430}
431
432pub struct NavigationData {
433 anchor: Anchor,
434 offset: usize,
435}
436
437impl Editor {
438 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
439 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
440 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
441 let mut view = Self::for_buffer(buffer, build_settings, cx);
442 view.mode = EditorMode::SingleLine;
443 view
444 }
445
446 pub fn auto_height(
447 max_lines: usize,
448 build_settings: BuildSettings,
449 cx: &mut ViewContext<Self>,
450 ) -> Self {
451 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
452 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
453 let mut view = Self::for_buffer(buffer, build_settings, cx);
454 view.mode = EditorMode::AutoHeight { max_lines };
455 view
456 }
457
458 pub fn for_buffer(
459 buffer: ModelHandle<MultiBuffer>,
460 build_settings: BuildSettings,
461 cx: &mut ViewContext<Self>,
462 ) -> Self {
463 Self::new(buffer, build_settings, cx)
464 }
465
466 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
467 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
468 clone.scroll_position = self.scroll_position;
469 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
470 clone.nav_history = self
471 .nav_history
472 .as_ref()
473 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
474 clone
475 }
476
477 pub fn new(
478 buffer: ModelHandle<MultiBuffer>,
479 build_settings: BuildSettings,
480 cx: &mut ViewContext<Self>,
481 ) -> Self {
482 let settings = build_settings(cx);
483 let display_map = cx.add_model(|cx| {
484 DisplayMap::new(
485 buffer.clone(),
486 settings.tab_size,
487 settings.style.text.font_id,
488 settings.style.text.font_size,
489 None,
490 cx,
491 )
492 });
493 cx.observe(&buffer, Self::on_buffer_changed).detach();
494 cx.subscribe(&buffer, Self::on_buffer_event).detach();
495 cx.observe(&display_map, Self::on_display_map_changed)
496 .detach();
497
498 let mut this = Self {
499 handle: cx.weak_handle(),
500 buffer,
501 display_map,
502 selections: Arc::from([]),
503 pending_selection: None,
504 columnar_selection_tail: None,
505 next_selection_id: 0,
506 add_selections_state: None,
507 select_next_state: None,
508 selection_history: Default::default(),
509 autoclose_stack: Default::default(),
510 select_larger_syntax_node_stack: Vec::new(),
511 active_diagnostics: None,
512 build_settings,
513 scroll_position: Vector2F::zero(),
514 scroll_top_anchor: None,
515 autoscroll_request: None,
516 focused: false,
517 show_local_cursors: false,
518 blink_epoch: 0,
519 blinking_paused: false,
520 mode: EditorMode::Full,
521 placeholder_text: None,
522 highlighted_rows: None,
523 nav_history: None,
524 };
525 let selection = Selection {
526 id: post_inc(&mut this.next_selection_id),
527 start: 0,
528 end: 0,
529 reversed: false,
530 goal: SelectionGoal::None,
531 };
532 this.update_selections(vec![selection], None, cx);
533 this
534 }
535
536 pub fn open_new(
537 workspace: &mut Workspace,
538 _: &workspace::OpenNew,
539 cx: &mut ViewContext<Workspace>,
540 ) {
541 let buffer = cx
542 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
543 workspace.open_item(BufferItemHandle(buffer), cx);
544 }
545
546 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
547 self.buffer.read(cx).replica_id()
548 }
549
550 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
551 &self.buffer
552 }
553
554 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
555 EditorSnapshot {
556 mode: self.mode,
557 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
558 scroll_position: self.scroll_position,
559 scroll_top_anchor: self.scroll_top_anchor.clone(),
560 placeholder_text: self.placeholder_text.clone(),
561 is_focused: self
562 .handle
563 .upgrade(cx)
564 .map_or(false, |handle| handle.is_focused(cx)),
565 }
566 }
567
568 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
569 self.buffer.read(cx).language(cx)
570 }
571
572 pub fn set_placeholder_text(
573 &mut self,
574 placeholder_text: impl Into<Arc<str>>,
575 cx: &mut ViewContext<Self>,
576 ) {
577 self.placeholder_text = Some(placeholder_text.into());
578 cx.notify();
579 }
580
581 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
582 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
583
584 if scroll_position.y() == 0. {
585 self.scroll_top_anchor = None;
586 self.scroll_position = scroll_position;
587 } else {
588 let scroll_top_buffer_offset =
589 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
590 let anchor = map
591 .buffer_snapshot
592 .anchor_at(scroll_top_buffer_offset, Bias::Right);
593 self.scroll_position = vec2f(
594 scroll_position.x(),
595 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
596 );
597 self.scroll_top_anchor = Some(anchor);
598 }
599
600 cx.notify();
601 }
602
603 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
604 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
605 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
606 }
607
608 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
609 if max < self.scroll_position.x() {
610 self.scroll_position.set_x(max);
611 true
612 } else {
613 false
614 }
615 }
616
617 pub fn autoscroll_vertically(
618 &mut self,
619 viewport_height: f32,
620 line_height: f32,
621 cx: &mut ViewContext<Self>,
622 ) -> bool {
623 let visible_lines = viewport_height / line_height;
624 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
625 let mut scroll_position =
626 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
627 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
628 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
629 } else {
630 display_map.max_point().row().saturating_sub(1) as f32
631 };
632 if scroll_position.y() > max_scroll_top {
633 scroll_position.set_y(max_scroll_top);
634 self.set_scroll_position(scroll_position, cx);
635 }
636
637 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
638 autoscroll
639 } else {
640 return false;
641 };
642
643 let first_cursor_top;
644 let last_cursor_bottom;
645 if let Some(highlighted_rows) = &self.highlighted_rows {
646 first_cursor_top = highlighted_rows.start as f32;
647 last_cursor_bottom = first_cursor_top + 1.;
648 } else if autoscroll == Autoscroll::Newest {
649 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
650 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
651 last_cursor_bottom = first_cursor_top + 1.;
652 } else {
653 let selections = self.local_selections::<Point>(cx);
654 first_cursor_top = selections
655 .first()
656 .unwrap()
657 .head()
658 .to_display_point(&display_map)
659 .row() as f32;
660 last_cursor_bottom = selections
661 .last()
662 .unwrap()
663 .head()
664 .to_display_point(&display_map)
665 .row() as f32
666 + 1.0;
667 }
668
669 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
670 0.
671 } else {
672 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
673 };
674 if margin < 0.0 {
675 return false;
676 }
677
678 match autoscroll {
679 Autoscroll::Fit | Autoscroll::Newest => {
680 let margin = margin.min(3.0);
681 let target_top = (first_cursor_top - margin).max(0.0);
682 let target_bottom = last_cursor_bottom + margin;
683 let start_row = scroll_position.y();
684 let end_row = start_row + visible_lines;
685
686 if target_top < start_row {
687 scroll_position.set_y(target_top);
688 self.set_scroll_position(scroll_position, cx);
689 } else if target_bottom >= end_row {
690 scroll_position.set_y(target_bottom - visible_lines);
691 self.set_scroll_position(scroll_position, cx);
692 }
693 }
694 Autoscroll::Center => {
695 scroll_position.set_y((first_cursor_top - margin).max(0.0));
696 self.set_scroll_position(scroll_position, cx);
697 }
698 }
699
700 true
701 }
702
703 pub fn autoscroll_horizontally(
704 &mut self,
705 start_row: u32,
706 viewport_width: f32,
707 scroll_width: f32,
708 max_glyph_width: f32,
709 layouts: &[text_layout::Line],
710 cx: &mut ViewContext<Self>,
711 ) -> bool {
712 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
713 let selections = self.local_selections::<Point>(cx);
714
715 let mut target_left;
716 let mut target_right;
717
718 if self.highlighted_rows.is_some() {
719 target_left = 0.0_f32;
720 target_right = 0.0_f32;
721 } else {
722 target_left = std::f32::INFINITY;
723 target_right = 0.0_f32;
724 for selection in selections {
725 let head = selection.head().to_display_point(&display_map);
726 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
727 let start_column = head.column().saturating_sub(3);
728 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
729 target_left = target_left.min(
730 layouts[(head.row() - start_row) as usize]
731 .x_for_index(start_column as usize),
732 );
733 target_right = target_right.max(
734 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
735 + max_glyph_width,
736 );
737 }
738 }
739 }
740
741 target_right = target_right.min(scroll_width);
742
743 if target_right - target_left > viewport_width {
744 return false;
745 }
746
747 let scroll_left = self.scroll_position.x() * max_glyph_width;
748 let scroll_right = scroll_left + viewport_width;
749
750 if target_left < scroll_left {
751 self.scroll_position.set_x(target_left / max_glyph_width);
752 true
753 } else if target_right > scroll_right {
754 self.scroll_position
755 .set_x((target_right - viewport_width) / max_glyph_width);
756 true
757 } else {
758 false
759 }
760 }
761
762 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
763 match phase {
764 SelectPhase::Begin {
765 position,
766 add,
767 click_count,
768 } => self.begin_selection(*position, *add, *click_count, cx),
769 SelectPhase::BeginColumnar {
770 position,
771 overshoot,
772 } => self.begin_columnar_selection(*position, *overshoot, cx),
773 SelectPhase::Extend {
774 position,
775 click_count,
776 } => self.extend_selection(*position, *click_count, cx),
777 SelectPhase::Update {
778 position,
779 overshoot,
780 scroll_position,
781 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
782 SelectPhase::End => self.end_selection(cx),
783 }
784 }
785
786 fn extend_selection(
787 &mut self,
788 position: DisplayPoint,
789 click_count: usize,
790 cx: &mut ViewContext<Self>,
791 ) {
792 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
793 let tail = self
794 .newest_selection::<usize>(&display_map.buffer_snapshot)
795 .tail();
796 self.begin_selection(position, false, click_count, cx);
797
798 let position = position.to_offset(&display_map, Bias::Left);
799 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
800 let pending = self.pending_selection.as_mut().unwrap();
801
802 if position >= tail {
803 pending.selection.start = tail_anchor.clone();
804 } else {
805 pending.selection.end = tail_anchor.clone();
806 pending.selection.reversed = true;
807 }
808
809 match &mut pending.mode {
810 SelectMode::Word(range) | SelectMode::Line(range) => {
811 *range = tail_anchor.clone()..tail_anchor
812 }
813 _ => {}
814 }
815 }
816
817 fn begin_selection(
818 &mut self,
819 position: DisplayPoint,
820 add: bool,
821 click_count: usize,
822 cx: &mut ViewContext<Self>,
823 ) {
824 if !self.focused {
825 cx.focus_self();
826 cx.emit(Event::Activate);
827 }
828
829 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
830 let buffer = &display_map.buffer_snapshot;
831 let newest_selection = self.newest_selection_internal().unwrap().clone();
832
833 let start;
834 let end;
835 let mode;
836 match click_count {
837 1 => {
838 start = buffer.anchor_before(position.to_point(&display_map));
839 end = start.clone();
840 mode = SelectMode::Character;
841 }
842 2 => {
843 let range = movement::surrounding_word(&display_map, position);
844 start = buffer.anchor_before(range.start.to_point(&display_map));
845 end = buffer.anchor_before(range.end.to_point(&display_map));
846 mode = SelectMode::Word(start.clone()..end.clone());
847 }
848 3 => {
849 let position = display_map.clip_point(position, Bias::Left);
850 let line_start = movement::line_beginning(&display_map, position, false);
851 let mut next_line_start = line_start.clone();
852 *next_line_start.row_mut() += 1;
853 *next_line_start.column_mut() = 0;
854 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
855
856 start = buffer.anchor_before(line_start.to_point(&display_map));
857 end = buffer.anchor_before(next_line_start.to_point(&display_map));
858 mode = SelectMode::Line(start.clone()..end.clone());
859 }
860 _ => {
861 start = buffer.anchor_before(0);
862 end = buffer.anchor_before(buffer.len());
863 mode = SelectMode::All;
864 }
865 }
866
867 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
868
869 let selection = Selection {
870 id: post_inc(&mut self.next_selection_id),
871 start,
872 end,
873 reversed: false,
874 goal: SelectionGoal::None,
875 };
876
877 if !add {
878 self.update_selections::<usize>(Vec::new(), None, cx);
879 } else if click_count > 1 {
880 // Remove the newest selection since it was only added as part of this multi-click.
881 let mut selections = self.local_selections(cx);
882 selections.retain(|selection| selection.id != newest_selection.id);
883 self.update_selections::<usize>(selections, None, cx)
884 }
885
886 self.pending_selection = Some(PendingSelection { selection, mode });
887
888 cx.notify();
889 }
890
891 fn begin_columnar_selection(
892 &mut self,
893 position: DisplayPoint,
894 overshoot: u32,
895 cx: &mut ViewContext<Self>,
896 ) {
897 if !self.focused {
898 cx.focus_self();
899 cx.emit(Event::Activate);
900 }
901
902 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
903 let tail = self
904 .newest_selection::<Point>(&display_map.buffer_snapshot)
905 .tail();
906 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
907
908 self.select_columns(
909 tail.to_display_point(&display_map),
910 position,
911 overshoot,
912 &display_map,
913 cx,
914 );
915 }
916
917 fn update_selection(
918 &mut self,
919 position: DisplayPoint,
920 overshoot: u32,
921 scroll_position: Vector2F,
922 cx: &mut ViewContext<Self>,
923 ) {
924 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
925
926 if let Some(tail) = self.columnar_selection_tail.as_ref() {
927 let tail = tail.to_display_point(&display_map);
928 self.select_columns(tail, position, overshoot, &display_map, cx);
929 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
930 let buffer = self.buffer.read(cx).snapshot(cx);
931 let head;
932 let tail;
933 match mode {
934 SelectMode::Character => {
935 head = position.to_point(&display_map);
936 tail = selection.tail().to_point(&buffer);
937 }
938 SelectMode::Word(original_range) => {
939 let original_display_range = original_range.start.to_display_point(&display_map)
940 ..original_range.end.to_display_point(&display_map);
941 let original_buffer_range = original_display_range.start.to_point(&display_map)
942 ..original_display_range.end.to_point(&display_map);
943 if movement::is_inside_word(&display_map, position)
944 || original_display_range.contains(&position)
945 {
946 let word_range = movement::surrounding_word(&display_map, position);
947 if word_range.start < original_display_range.start {
948 head = word_range.start.to_point(&display_map);
949 } else {
950 head = word_range.end.to_point(&display_map);
951 }
952 } else {
953 head = position.to_point(&display_map);
954 }
955
956 if head <= original_buffer_range.start {
957 tail = original_buffer_range.end;
958 } else {
959 tail = original_buffer_range.start;
960 }
961 }
962 SelectMode::Line(original_range) => {
963 let original_display_range = original_range.start.to_display_point(&display_map)
964 ..original_range.end.to_display_point(&display_map);
965 let original_buffer_range = original_display_range.start.to_point(&display_map)
966 ..original_display_range.end.to_point(&display_map);
967 let line_start = movement::line_beginning(&display_map, position, false);
968 let mut next_line_start = line_start.clone();
969 *next_line_start.row_mut() += 1;
970 *next_line_start.column_mut() = 0;
971 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
972
973 if line_start < original_display_range.start {
974 head = line_start.to_point(&display_map);
975 } else {
976 head = next_line_start.to_point(&display_map);
977 }
978
979 if head <= original_buffer_range.start {
980 tail = original_buffer_range.end;
981 } else {
982 tail = original_buffer_range.start;
983 }
984 }
985 SelectMode::All => {
986 return;
987 }
988 };
989
990 if head < tail {
991 selection.start = buffer.anchor_before(head);
992 selection.end = buffer.anchor_before(tail);
993 selection.reversed = true;
994 } else {
995 selection.start = buffer.anchor_before(tail);
996 selection.end = buffer.anchor_before(head);
997 selection.reversed = false;
998 }
999 } else {
1000 log::error!("update_selection dispatched with no pending selection");
1001 return;
1002 }
1003
1004 self.set_scroll_position(scroll_position, cx);
1005 cx.notify();
1006 }
1007
1008 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1009 self.columnar_selection_tail.take();
1010 if self.pending_selection.is_some() {
1011 let selections = self.local_selections::<usize>(cx);
1012 self.update_selections(selections, None, cx);
1013 }
1014 }
1015
1016 fn select_columns(
1017 &mut self,
1018 tail: DisplayPoint,
1019 head: DisplayPoint,
1020 overshoot: u32,
1021 display_map: &DisplaySnapshot,
1022 cx: &mut ViewContext<Self>,
1023 ) {
1024 let start_row = cmp::min(tail.row(), head.row());
1025 let end_row = cmp::max(tail.row(), head.row());
1026 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1027 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1028 let reversed = start_column < tail.column();
1029
1030 let selections = (start_row..=end_row)
1031 .filter_map(|row| {
1032 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1033 let start = display_map
1034 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1035 .to_point(&display_map);
1036 let end = display_map
1037 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1038 .to_point(&display_map);
1039 Some(Selection {
1040 id: post_inc(&mut self.next_selection_id),
1041 start,
1042 end,
1043 reversed,
1044 goal: SelectionGoal::None,
1045 })
1046 } else {
1047 None
1048 }
1049 })
1050 .collect::<Vec<_>>();
1051
1052 self.update_selections(selections, None, cx);
1053 cx.notify();
1054 }
1055
1056 pub fn is_selecting(&self) -> bool {
1057 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1058 }
1059
1060 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1061 if self.active_diagnostics.is_some() {
1062 self.dismiss_diagnostics(cx);
1063 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1064 let buffer = self.buffer.read(cx).snapshot(cx);
1065 let selection = Selection {
1066 id: selection.id,
1067 start: selection.start.to_point(&buffer),
1068 end: selection.end.to_point(&buffer),
1069 reversed: selection.reversed,
1070 goal: selection.goal,
1071 };
1072 if self.local_selections::<Point>(cx).is_empty() {
1073 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1074 }
1075 } else {
1076 let buffer = self.buffer.read(cx).snapshot(cx);
1077 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1078 if self.selection_count() == 1 {
1079 if oldest_selection.is_empty() {
1080 cx.propagate_action();
1081 return;
1082 }
1083
1084 oldest_selection.start = oldest_selection.head().clone();
1085 oldest_selection.end = oldest_selection.head().clone();
1086 }
1087 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1088 }
1089 }
1090
1091 #[cfg(any(test, feature = "test-support"))]
1092 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1093 &self,
1094 cx: &mut MutableAppContext,
1095 ) -> Vec<Range<D>> {
1096 self.local_selections::<D>(cx)
1097 .iter()
1098 .map(|s| {
1099 if s.reversed {
1100 s.end.clone()..s.start.clone()
1101 } else {
1102 s.start.clone()..s.end.clone()
1103 }
1104 })
1105 .collect()
1106 }
1107
1108 #[cfg(any(test, feature = "test-support"))]
1109 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1110 let display_map = self
1111 .display_map
1112 .update(cx, |display_map, cx| display_map.snapshot(cx));
1113 self.selections
1114 .iter()
1115 .chain(
1116 self.pending_selection
1117 .as_ref()
1118 .map(|pending| &pending.selection),
1119 )
1120 .map(|s| {
1121 if s.reversed {
1122 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1123 } else {
1124 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1125 }
1126 })
1127 .collect()
1128 }
1129
1130 pub fn select_ranges<I, T>(
1131 &mut self,
1132 ranges: I,
1133 autoscroll: Option<Autoscroll>,
1134 cx: &mut ViewContext<Self>,
1135 ) where
1136 I: IntoIterator<Item = Range<T>>,
1137 T: ToOffset,
1138 {
1139 let buffer = self.buffer.read(cx).snapshot(cx);
1140 let selections = ranges
1141 .into_iter()
1142 .map(|range| {
1143 let mut start = range.start.to_offset(&buffer);
1144 let mut end = range.end.to_offset(&buffer);
1145 let reversed = if start > end {
1146 mem::swap(&mut start, &mut end);
1147 true
1148 } else {
1149 false
1150 };
1151 Selection {
1152 id: post_inc(&mut self.next_selection_id),
1153 start,
1154 end,
1155 reversed,
1156 goal: SelectionGoal::None,
1157 }
1158 })
1159 .collect::<Vec<_>>();
1160 self.update_selections(selections, autoscroll, cx);
1161 }
1162
1163 #[cfg(any(test, feature = "test-support"))]
1164 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1165 where
1166 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1167 {
1168 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1169 let selections = ranges
1170 .into_iter()
1171 .map(|range| {
1172 let mut start = range.start;
1173 let mut end = range.end;
1174 let reversed = if start > end {
1175 mem::swap(&mut start, &mut end);
1176 true
1177 } else {
1178 false
1179 };
1180 Selection {
1181 id: post_inc(&mut self.next_selection_id),
1182 start: start.to_point(&display_map),
1183 end: end.to_point(&display_map),
1184 reversed,
1185 goal: SelectionGoal::None,
1186 }
1187 })
1188 .collect();
1189 self.update_selections(selections, None, cx);
1190 }
1191
1192 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1193 let text = action.0.as_ref();
1194 if !self.skip_autoclose_end(text, cx) {
1195 self.start_transaction(cx);
1196 self.insert(text, cx);
1197 self.autoclose_pairs(cx);
1198 self.end_transaction(cx);
1199 }
1200 }
1201
1202 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1203 self.start_transaction(cx);
1204 let mut old_selections = SmallVec::<[_; 32]>::new();
1205 {
1206 let selections = self.local_selections::<Point>(cx);
1207 let buffer = self.buffer.read(cx).snapshot(cx);
1208 for selection in selections.iter() {
1209 let start_point = selection.start;
1210 let indent = buffer
1211 .indent_column_for_line(start_point.row)
1212 .min(start_point.column);
1213 let start = selection.start.to_offset(&buffer);
1214 let end = selection.end.to_offset(&buffer);
1215
1216 let mut insert_extra_newline = false;
1217 if let Some(language) = buffer.language() {
1218 let leading_whitespace_len = buffer
1219 .reversed_chars_at(start)
1220 .take_while(|c| c.is_whitespace() && *c != '\n')
1221 .map(|c| c.len_utf8())
1222 .sum::<usize>();
1223
1224 let trailing_whitespace_len = buffer
1225 .chars_at(end)
1226 .take_while(|c| c.is_whitespace() && *c != '\n')
1227 .map(|c| c.len_utf8())
1228 .sum::<usize>();
1229
1230 insert_extra_newline = language.brackets().iter().any(|pair| {
1231 let pair_start = pair.start.trim_end();
1232 let pair_end = pair.end.trim_start();
1233
1234 pair.newline
1235 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1236 && buffer.contains_str_at(
1237 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1238 pair_start,
1239 )
1240 });
1241 }
1242
1243 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1244 }
1245 }
1246
1247 self.buffer.update(cx, |buffer, cx| {
1248 let mut delta = 0_isize;
1249 let mut pending_edit: Option<PendingEdit> = None;
1250 for (_, range, indent, insert_extra_newline) in &old_selections {
1251 if pending_edit.as_ref().map_or(false, |pending| {
1252 pending.indent != *indent
1253 || pending.insert_extra_newline != *insert_extra_newline
1254 }) {
1255 let pending = pending_edit.take().unwrap();
1256 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1257 new_text.push('\n');
1258 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1259 if pending.insert_extra_newline {
1260 new_text = new_text.repeat(2);
1261 }
1262 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1263 delta += pending.delta;
1264 }
1265
1266 let start = (range.start as isize + delta) as usize;
1267 let end = (range.end as isize + delta) as usize;
1268 let mut text_len = *indent as usize + 1;
1269 if *insert_extra_newline {
1270 text_len *= 2;
1271 }
1272
1273 let pending = pending_edit.get_or_insert_with(Default::default);
1274 pending.delta += text_len as isize - (end - start) as isize;
1275 pending.indent = *indent;
1276 pending.insert_extra_newline = *insert_extra_newline;
1277 pending.ranges.push(start..end);
1278 }
1279
1280 let pending = pending_edit.unwrap();
1281 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1282 new_text.push('\n');
1283 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1284 if pending.insert_extra_newline {
1285 new_text = new_text.repeat(2);
1286 }
1287 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1288
1289 let buffer = buffer.read(cx);
1290 self.selections = self
1291 .selections
1292 .iter()
1293 .cloned()
1294 .zip(old_selections)
1295 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1296 if insert_extra_newline {
1297 let mut cursor = new_selection.start.to_point(&buffer);
1298 cursor.row -= 1;
1299 cursor.column = buffer.line_len(cursor.row);
1300 let anchor = buffer.anchor_after(cursor);
1301 new_selection.start = anchor.clone();
1302 new_selection.end = anchor;
1303 }
1304 new_selection
1305 })
1306 .collect();
1307 });
1308
1309 self.request_autoscroll(Autoscroll::Fit, cx);
1310 self.end_transaction(cx);
1311
1312 #[derive(Default)]
1313 struct PendingEdit {
1314 indent: u32,
1315 insert_extra_newline: bool,
1316 delta: isize,
1317 ranges: SmallVec<[Range<usize>; 32]>,
1318 }
1319 }
1320
1321 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1322 self.start_transaction(cx);
1323 let old_selections = self.local_selections::<usize>(cx);
1324 self.buffer.update(cx, |buffer, cx| {
1325 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1326 buffer.edit_with_autoindent(edit_ranges, text, cx);
1327 });
1328
1329 let selections = self.local_selections::<usize>(cx);
1330 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1331 self.end_transaction(cx);
1332 }
1333
1334 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1335 let selections = self.local_selections::<usize>(cx);
1336 let mut bracket_pair_state = None;
1337 let mut new_selections = None;
1338 self.buffer.update(cx, |buffer, cx| {
1339 let mut snapshot = buffer.snapshot(cx);
1340 let left_biased_selections = selections
1341 .iter()
1342 .map(|selection| Selection {
1343 id: selection.id,
1344 start: snapshot.anchor_before(selection.start),
1345 end: snapshot.anchor_before(selection.end),
1346 reversed: selection.reversed,
1347 goal: selection.goal,
1348 })
1349 .collect::<Vec<_>>();
1350
1351 let autoclose_pair = snapshot.language().and_then(|language| {
1352 let first_selection_start = selections.first().unwrap().start;
1353 let pair = language.brackets().iter().find(|pair| {
1354 snapshot.contains_str_at(
1355 first_selection_start.saturating_sub(pair.start.len()),
1356 &pair.start,
1357 )
1358 });
1359 pair.and_then(|pair| {
1360 let should_autoclose = selections[1..].iter().all(|selection| {
1361 snapshot.contains_str_at(
1362 selection.start.saturating_sub(pair.start.len()),
1363 &pair.start,
1364 )
1365 });
1366
1367 if should_autoclose {
1368 Some(pair.clone())
1369 } else {
1370 None
1371 }
1372 })
1373 });
1374
1375 if let Some(pair) = autoclose_pair {
1376 let selection_ranges = selections
1377 .iter()
1378 .map(|selection| {
1379 let start = selection.start.to_offset(&snapshot);
1380 start..start
1381 })
1382 .collect::<SmallVec<[_; 32]>>();
1383
1384 buffer.edit(selection_ranges, &pair.end, cx);
1385 snapshot = buffer.snapshot(cx);
1386
1387 new_selections = Some(
1388 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1389 .collect::<Vec<_>>(),
1390 );
1391
1392 if pair.end.len() == 1 {
1393 let mut delta = 0;
1394 bracket_pair_state = Some(BracketPairState {
1395 ranges: selections
1396 .iter()
1397 .map(move |selection| {
1398 let offset = selection.start + delta;
1399 delta += 1;
1400 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1401 })
1402 .collect(),
1403 pair,
1404 });
1405 }
1406 }
1407 });
1408
1409 if let Some(new_selections) = new_selections {
1410 self.update_selections(new_selections, None, cx);
1411 }
1412 if let Some(bracket_pair_state) = bracket_pair_state {
1413 self.autoclose_stack.push(bracket_pair_state);
1414 }
1415 }
1416
1417 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1418 let old_selections = self.local_selections::<usize>(cx);
1419 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1420 autoclose_pair
1421 } else {
1422 return false;
1423 };
1424 if text != autoclose_pair.pair.end {
1425 return false;
1426 }
1427
1428 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1429
1430 let buffer = self.buffer.read(cx).snapshot(cx);
1431 if old_selections
1432 .iter()
1433 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1434 .all(|(selection, autoclose_range)| {
1435 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1436 selection.is_empty() && selection.start == autoclose_range_end
1437 })
1438 {
1439 let new_selections = old_selections
1440 .into_iter()
1441 .map(|selection| {
1442 let cursor = selection.start + 1;
1443 Selection {
1444 id: selection.id,
1445 start: cursor,
1446 end: cursor,
1447 reversed: false,
1448 goal: SelectionGoal::None,
1449 }
1450 })
1451 .collect();
1452 self.autoclose_stack.pop();
1453 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1454 true
1455 } else {
1456 false
1457 }
1458 }
1459
1460 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1461 self.start_transaction(cx);
1462 self.select_all(&SelectAll, cx);
1463 self.insert("", cx);
1464 self.end_transaction(cx);
1465 }
1466
1467 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1468 self.start_transaction(cx);
1469 let mut selections = self.local_selections::<Point>(cx);
1470 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1471 for selection in &mut selections {
1472 if selection.is_empty() {
1473 let head = selection.head().to_display_point(&display_map);
1474 let cursor = movement::left(&display_map, head)
1475 .unwrap()
1476 .to_point(&display_map);
1477 selection.set_head(cursor);
1478 selection.goal = SelectionGoal::None;
1479 }
1480 }
1481 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1482 self.insert("", cx);
1483 self.end_transaction(cx);
1484 }
1485
1486 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1487 self.start_transaction(cx);
1488 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1489 let mut selections = self.local_selections::<Point>(cx);
1490 for selection in &mut selections {
1491 if selection.is_empty() {
1492 let head = selection.head().to_display_point(&display_map);
1493 let cursor = movement::right(&display_map, head)
1494 .unwrap()
1495 .to_point(&display_map);
1496 selection.set_head(cursor);
1497 selection.goal = SelectionGoal::None;
1498 }
1499 }
1500 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1501 self.insert(&"", cx);
1502 self.end_transaction(cx);
1503 }
1504
1505 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1506 self.start_transaction(cx);
1507 let tab_size = (self.build_settings)(cx).tab_size;
1508 let mut selections = self.local_selections::<Point>(cx);
1509 let mut last_indent = None;
1510 self.buffer.update(cx, |buffer, cx| {
1511 for selection in &mut selections {
1512 if selection.is_empty() {
1513 let char_column = buffer
1514 .read(cx)
1515 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1516 .flat_map(str::chars)
1517 .count();
1518 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1519 buffer.edit(
1520 [selection.start..selection.start],
1521 " ".repeat(chars_to_next_tab_stop),
1522 cx,
1523 );
1524 selection.start.column += chars_to_next_tab_stop as u32;
1525 selection.end = selection.start;
1526 } else {
1527 let mut start_row = selection.start.row;
1528 let mut end_row = selection.end.row + 1;
1529
1530 // If a selection ends at the beginning of a line, don't indent
1531 // that last line.
1532 if selection.end.column == 0 {
1533 end_row -= 1;
1534 }
1535
1536 // Avoid re-indenting a row that has already been indented by a
1537 // previous selection, but still update this selection's column
1538 // to reflect that indentation.
1539 if let Some((last_indent_row, last_indent_len)) = last_indent {
1540 if last_indent_row == selection.start.row {
1541 selection.start.column += last_indent_len;
1542 start_row += 1;
1543 }
1544 if last_indent_row == selection.end.row {
1545 selection.end.column += last_indent_len;
1546 }
1547 }
1548
1549 for row in start_row..end_row {
1550 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1551 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1552 let row_start = Point::new(row, 0);
1553 buffer.edit(
1554 [row_start..row_start],
1555 " ".repeat(columns_to_next_tab_stop),
1556 cx,
1557 );
1558
1559 // Update this selection's endpoints to reflect the indentation.
1560 if row == selection.start.row {
1561 selection.start.column += columns_to_next_tab_stop as u32;
1562 }
1563 if row == selection.end.row {
1564 selection.end.column += columns_to_next_tab_stop as u32;
1565 }
1566
1567 last_indent = Some((row, columns_to_next_tab_stop as u32));
1568 }
1569 }
1570 }
1571 });
1572
1573 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1574 self.end_transaction(cx);
1575 }
1576
1577 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1578 self.start_transaction(cx);
1579 let tab_size = (self.build_settings)(cx).tab_size;
1580 let selections = self.local_selections::<Point>(cx);
1581 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1582 let mut deletion_ranges = Vec::new();
1583 let mut last_outdent = None;
1584 {
1585 let buffer = self.buffer.read(cx).read(cx);
1586 for selection in &selections {
1587 let mut rows = selection.spanned_rows(false, &display_map);
1588
1589 // Avoid re-outdenting a row that has already been outdented by a
1590 // previous selection.
1591 if let Some(last_row) = last_outdent {
1592 if last_row == rows.start {
1593 rows.start += 1;
1594 }
1595 }
1596
1597 for row in rows {
1598 let column = buffer.indent_column_for_line(row) as usize;
1599 if column > 0 {
1600 let mut deletion_len = (column % tab_size) as u32;
1601 if deletion_len == 0 {
1602 deletion_len = tab_size as u32;
1603 }
1604 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1605 last_outdent = Some(row);
1606 }
1607 }
1608 }
1609 }
1610 self.buffer.update(cx, |buffer, cx| {
1611 buffer.edit(deletion_ranges, "", cx);
1612 });
1613
1614 self.update_selections(
1615 self.local_selections::<usize>(cx),
1616 Some(Autoscroll::Fit),
1617 cx,
1618 );
1619 self.end_transaction(cx);
1620 }
1621
1622 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1623 self.start_transaction(cx);
1624
1625 let selections = self.local_selections::<Point>(cx);
1626 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1627 let buffer = self.buffer.read(cx).snapshot(cx);
1628
1629 let mut new_cursors = Vec::new();
1630 let mut edit_ranges = Vec::new();
1631 let mut selections = selections.iter().peekable();
1632 while let Some(selection) = selections.next() {
1633 let mut rows = selection.spanned_rows(false, &display_map);
1634 let goal_display_column = selection.head().to_display_point(&display_map).column();
1635
1636 // Accumulate contiguous regions of rows that we want to delete.
1637 while let Some(next_selection) = selections.peek() {
1638 let next_rows = next_selection.spanned_rows(false, &display_map);
1639 if next_rows.start <= rows.end {
1640 rows.end = next_rows.end;
1641 selections.next().unwrap();
1642 } else {
1643 break;
1644 }
1645 }
1646
1647 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1648 let edit_end;
1649 let cursor_buffer_row;
1650 if buffer.max_point().row >= rows.end {
1651 // If there's a line after the range, delete the \n from the end of the row range
1652 // and position the cursor on the next line.
1653 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1654 cursor_buffer_row = rows.end;
1655 } else {
1656 // If there isn't a line after the range, delete the \n from the line before the
1657 // start of the row range and position the cursor there.
1658 edit_start = edit_start.saturating_sub(1);
1659 edit_end = buffer.len();
1660 cursor_buffer_row = rows.start.saturating_sub(1);
1661 }
1662
1663 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1664 *cursor.column_mut() =
1665 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1666
1667 new_cursors.push((
1668 selection.id,
1669 buffer.anchor_after(cursor.to_point(&display_map)),
1670 ));
1671 edit_ranges.push(edit_start..edit_end);
1672 }
1673
1674 let buffer = self.buffer.update(cx, |buffer, cx| {
1675 buffer.edit(edit_ranges, "", cx);
1676 buffer.snapshot(cx)
1677 });
1678 let new_selections = new_cursors
1679 .into_iter()
1680 .map(|(id, cursor)| {
1681 let cursor = cursor.to_point(&buffer);
1682 Selection {
1683 id,
1684 start: cursor,
1685 end: cursor,
1686 reversed: false,
1687 goal: SelectionGoal::None,
1688 }
1689 })
1690 .collect();
1691 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1692 self.end_transaction(cx);
1693 }
1694
1695 pub fn duplicate_line(&mut self, _: &DuplicateLine, 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 = &display_map.buffer_snapshot;
1701
1702 let mut edits = Vec::new();
1703 let mut selections_iter = selections.iter().peekable();
1704 while let Some(selection) = selections_iter.next() {
1705 // Avoid duplicating the same lines twice.
1706 let mut rows = selection.spanned_rows(false, &display_map);
1707
1708 while let Some(next_selection) = selections_iter.peek() {
1709 let next_rows = next_selection.spanned_rows(false, &display_map);
1710 if next_rows.start <= rows.end - 1 {
1711 rows.end = next_rows.end;
1712 selections_iter.next().unwrap();
1713 } else {
1714 break;
1715 }
1716 }
1717
1718 // Copy the text from the selected row region and splice it at the start of the region.
1719 let start = Point::new(rows.start, 0);
1720 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1721 let text = buffer
1722 .text_for_range(start..end)
1723 .chain(Some("\n"))
1724 .collect::<String>();
1725 edits.push((start, text, rows.len() as u32));
1726 }
1727
1728 self.buffer.update(cx, |buffer, cx| {
1729 for (point, text, _) in edits.into_iter().rev() {
1730 buffer.edit(Some(point..point), text, cx);
1731 }
1732 });
1733
1734 self.request_autoscroll(Autoscroll::Fit, cx);
1735 self.end_transaction(cx);
1736 }
1737
1738 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1739 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1740 let buffer = self.buffer.read(cx).snapshot(cx);
1741
1742 let mut edits = Vec::new();
1743 let mut unfold_ranges = Vec::new();
1744 let mut refold_ranges = Vec::new();
1745
1746 let selections = self.local_selections::<Point>(cx);
1747 let mut selections = selections.iter().peekable();
1748 let mut contiguous_row_selections = Vec::new();
1749 let mut new_selections = Vec::new();
1750
1751 while let Some(selection) = selections.next() {
1752 // Find all the selections that span a contiguous row range
1753 contiguous_row_selections.push(selection.clone());
1754 let start_row = selection.start.row;
1755 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1756 display_map.next_line_boundary(selection.end).0.row + 1
1757 } else {
1758 selection.end.row
1759 };
1760
1761 while let Some(next_selection) = selections.peek() {
1762 if next_selection.start.row <= end_row {
1763 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1764 display_map.next_line_boundary(next_selection.end).0.row + 1
1765 } else {
1766 next_selection.end.row
1767 };
1768 contiguous_row_selections.push(selections.next().unwrap().clone());
1769 } else {
1770 break;
1771 }
1772 }
1773
1774 // Move the text spanned by the row range to be before the line preceding the row range
1775 if start_row > 0 {
1776 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1777 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1778 let insertion_point = display_map
1779 .prev_line_boundary(Point::new(start_row - 1, 0))
1780 .0;
1781
1782 // Don't move lines across excerpts
1783 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1784 let text = buffer
1785 .text_for_range(range_to_move.clone())
1786 .flat_map(|s| s.chars())
1787 .skip(1)
1788 .chain(['\n'])
1789 .collect::<String>();
1790
1791 edits.push((
1792 buffer.anchor_after(range_to_move.start)
1793 ..buffer.anchor_before(range_to_move.end),
1794 String::new(),
1795 ));
1796 let insertion_anchor = buffer.anchor_after(insertion_point);
1797 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1798
1799 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1800
1801 // Move selections up
1802 new_selections.extend(contiguous_row_selections.drain(..).map(
1803 |mut selection| {
1804 selection.start.row -= row_delta;
1805 selection.end.row -= row_delta;
1806 selection
1807 },
1808 ));
1809
1810 // Move folds up
1811 unfold_ranges.push(range_to_move.clone());
1812 for fold in display_map.folds_in_range(
1813 buffer.anchor_before(range_to_move.start)
1814 ..buffer.anchor_after(range_to_move.end),
1815 ) {
1816 let mut start = fold.start.to_point(&buffer);
1817 let mut end = fold.end.to_point(&buffer);
1818 start.row -= row_delta;
1819 end.row -= row_delta;
1820 refold_ranges.push(start..end);
1821 }
1822 }
1823 }
1824
1825 // If we didn't move line(s), preserve the existing selections
1826 new_selections.extend(contiguous_row_selections.drain(..));
1827 }
1828
1829 self.start_transaction(cx);
1830 self.unfold_ranges(unfold_ranges, cx);
1831 self.buffer.update(cx, |buffer, cx| {
1832 for (range, text) in edits {
1833 buffer.edit([range], text, cx);
1834 }
1835 });
1836 self.fold_ranges(refold_ranges, cx);
1837 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1838 self.end_transaction(cx);
1839 }
1840
1841 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1842 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1843 let buffer = self.buffer.read(cx).snapshot(cx);
1844
1845 let mut edits = Vec::new();
1846 let mut unfold_ranges = Vec::new();
1847 let mut refold_ranges = Vec::new();
1848
1849 let selections = self.local_selections::<Point>(cx);
1850 let mut selections = selections.iter().peekable();
1851 let mut contiguous_row_selections = Vec::new();
1852 let mut new_selections = Vec::new();
1853
1854 while let Some(selection) = selections.next() {
1855 // Find all the selections that span a contiguous row range
1856 contiguous_row_selections.push(selection.clone());
1857 let start_row = selection.start.row;
1858 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1859 display_map.next_line_boundary(selection.end).0.row + 1
1860 } else {
1861 selection.end.row
1862 };
1863
1864 while let Some(next_selection) = selections.peek() {
1865 if next_selection.start.row <= end_row {
1866 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1867 display_map.next_line_boundary(next_selection.end).0.row + 1
1868 } else {
1869 next_selection.end.row
1870 };
1871 contiguous_row_selections.push(selections.next().unwrap().clone());
1872 } else {
1873 break;
1874 }
1875 }
1876
1877 // Move the text spanned by the row range to be after the last line of the row range
1878 if end_row <= buffer.max_point().row {
1879 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1880 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
1881
1882 // Don't move lines across excerpt boundaries
1883 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1884 let mut text = String::from("\n");
1885 text.extend(buffer.text_for_range(range_to_move.clone()));
1886 text.pop(); // Drop trailing newline
1887 edits.push((
1888 buffer.anchor_after(range_to_move.start)
1889 ..buffer.anchor_before(range_to_move.end),
1890 String::new(),
1891 ));
1892 let insertion_anchor = buffer.anchor_after(insertion_point);
1893 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1894
1895 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1896
1897 // Move selections down
1898 new_selections.extend(contiguous_row_selections.drain(..).map(
1899 |mut selection| {
1900 selection.start.row += row_delta;
1901 selection.end.row += row_delta;
1902 selection
1903 },
1904 ));
1905
1906 // Move folds down
1907 unfold_ranges.push(range_to_move.clone());
1908 for fold in display_map.folds_in_range(
1909 buffer.anchor_before(range_to_move.start)
1910 ..buffer.anchor_after(range_to_move.end),
1911 ) {
1912 let mut start = fold.start.to_point(&buffer);
1913 let mut end = fold.end.to_point(&buffer);
1914 start.row += row_delta;
1915 end.row += row_delta;
1916 refold_ranges.push(start..end);
1917 }
1918 }
1919 }
1920
1921 // If we didn't move line(s), preserve the existing selections
1922 new_selections.extend(contiguous_row_selections.drain(..));
1923 }
1924
1925 self.start_transaction(cx);
1926 self.unfold_ranges(unfold_ranges, cx);
1927 self.buffer.update(cx, |buffer, cx| {
1928 for (range, text) in edits {
1929 buffer.edit([range], text, cx);
1930 }
1931 });
1932 self.fold_ranges(refold_ranges, cx);
1933 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1934 self.end_transaction(cx);
1935 }
1936
1937 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1938 self.start_transaction(cx);
1939 let mut text = String::new();
1940 let mut selections = self.local_selections::<Point>(cx);
1941 let mut clipboard_selections = Vec::with_capacity(selections.len());
1942 {
1943 let buffer = self.buffer.read(cx).read(cx);
1944 let max_point = buffer.max_point();
1945 for selection in &mut selections {
1946 let is_entire_line = selection.is_empty();
1947 if is_entire_line {
1948 selection.start = Point::new(selection.start.row, 0);
1949 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1950 }
1951 let mut len = 0;
1952 for chunk in buffer.text_for_range(selection.start..selection.end) {
1953 text.push_str(chunk);
1954 len += chunk.len();
1955 }
1956 clipboard_selections.push(ClipboardSelection {
1957 len,
1958 is_entire_line,
1959 });
1960 }
1961 }
1962 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1963 self.insert("", cx);
1964 self.end_transaction(cx);
1965
1966 cx.as_mut()
1967 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1968 }
1969
1970 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1971 let selections = self.local_selections::<Point>(cx);
1972 let mut text = String::new();
1973 let mut clipboard_selections = Vec::with_capacity(selections.len());
1974 {
1975 let buffer = self.buffer.read(cx).read(cx);
1976 let max_point = buffer.max_point();
1977 for selection in selections.iter() {
1978 let mut start = selection.start;
1979 let mut end = selection.end;
1980 let is_entire_line = selection.is_empty();
1981 if is_entire_line {
1982 start = Point::new(start.row, 0);
1983 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1984 }
1985 let mut len = 0;
1986 for chunk in buffer.text_for_range(start..end) {
1987 text.push_str(chunk);
1988 len += chunk.len();
1989 }
1990 clipboard_selections.push(ClipboardSelection {
1991 len,
1992 is_entire_line,
1993 });
1994 }
1995 }
1996
1997 cx.as_mut()
1998 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1999 }
2000
2001 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2002 if let Some(item) = cx.as_mut().read_from_clipboard() {
2003 let clipboard_text = item.text();
2004 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2005 let mut selections = self.local_selections::<usize>(cx);
2006 let all_selections_were_entire_line =
2007 clipboard_selections.iter().all(|s| s.is_entire_line);
2008 if clipboard_selections.len() != selections.len() {
2009 clipboard_selections.clear();
2010 }
2011
2012 let mut delta = 0_isize;
2013 let mut start_offset = 0;
2014 for (i, selection) in selections.iter_mut().enumerate() {
2015 let to_insert;
2016 let entire_line;
2017 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2018 let end_offset = start_offset + clipboard_selection.len;
2019 to_insert = &clipboard_text[start_offset..end_offset];
2020 entire_line = clipboard_selection.is_entire_line;
2021 start_offset = end_offset
2022 } else {
2023 to_insert = clipboard_text.as_str();
2024 entire_line = all_selections_were_entire_line;
2025 }
2026
2027 selection.start = (selection.start as isize + delta) as usize;
2028 selection.end = (selection.end as isize + delta) as usize;
2029
2030 self.buffer.update(cx, |buffer, cx| {
2031 // If the corresponding selection was empty when this slice of the
2032 // clipboard text was written, then the entire line containing the
2033 // selection was copied. If this selection is also currently empty,
2034 // then paste the line before the current line of the buffer.
2035 let range = if selection.is_empty() && entire_line {
2036 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2037 let line_start = selection.start - column;
2038 line_start..line_start
2039 } else {
2040 selection.start..selection.end
2041 };
2042
2043 delta += to_insert.len() as isize - range.len() as isize;
2044 buffer.edit([range], to_insert, cx);
2045 selection.start += to_insert.len();
2046 selection.end = selection.start;
2047 });
2048 }
2049 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2050 } else {
2051 self.insert(clipboard_text, cx);
2052 }
2053 }
2054 }
2055
2056 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2057 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2058 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2059 self.set_selections(selections, cx);
2060 }
2061 self.request_autoscroll(Autoscroll::Fit, cx);
2062 }
2063 }
2064
2065 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2066 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2067 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2068 self.set_selections(selections, cx);
2069 }
2070 self.request_autoscroll(Autoscroll::Fit, cx);
2071 }
2072 }
2073
2074 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2075 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2076 let mut selections = self.local_selections::<Point>(cx);
2077 for selection in &mut selections {
2078 let start = selection.start.to_display_point(&display_map);
2079 let end = selection.end.to_display_point(&display_map);
2080
2081 if start != end {
2082 selection.end = selection.start.clone();
2083 } else {
2084 let cursor = movement::left(&display_map, start)
2085 .unwrap()
2086 .to_point(&display_map);
2087 selection.start = cursor.clone();
2088 selection.end = cursor;
2089 }
2090 selection.reversed = false;
2091 selection.goal = SelectionGoal::None;
2092 }
2093 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2094 }
2095
2096 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2097 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2098 let mut selections = self.local_selections::<Point>(cx);
2099 for selection in &mut selections {
2100 let head = selection.head().to_display_point(&display_map);
2101 let cursor = movement::left(&display_map, head)
2102 .unwrap()
2103 .to_point(&display_map);
2104 selection.set_head(cursor);
2105 selection.goal = SelectionGoal::None;
2106 }
2107 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2108 }
2109
2110 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2111 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2112 let mut selections = self.local_selections::<Point>(cx);
2113 for selection in &mut selections {
2114 let start = selection.start.to_display_point(&display_map);
2115 let end = selection.end.to_display_point(&display_map);
2116
2117 if start != end {
2118 selection.start = selection.end.clone();
2119 } else {
2120 let cursor = movement::right(&display_map, end)
2121 .unwrap()
2122 .to_point(&display_map);
2123 selection.start = cursor;
2124 selection.end = cursor;
2125 }
2126 selection.reversed = false;
2127 selection.goal = SelectionGoal::None;
2128 }
2129 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2130 }
2131
2132 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2133 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2134 let mut selections = self.local_selections::<Point>(cx);
2135 for selection in &mut selections {
2136 let head = selection.head().to_display_point(&display_map);
2137 let cursor = movement::right(&display_map, head)
2138 .unwrap()
2139 .to_point(&display_map);
2140 selection.set_head(cursor);
2141 selection.goal = SelectionGoal::None;
2142 }
2143 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2144 }
2145
2146 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2147 if matches!(self.mode, EditorMode::SingleLine) {
2148 cx.propagate_action();
2149 return;
2150 }
2151
2152 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2153 let mut selections = self.local_selections::<Point>(cx);
2154 for selection in &mut selections {
2155 let start = selection.start.to_display_point(&display_map);
2156 let end = selection.end.to_display_point(&display_map);
2157 if start != end {
2158 selection.goal = SelectionGoal::None;
2159 }
2160
2161 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2162 let cursor = start.to_point(&display_map);
2163 selection.start = cursor;
2164 selection.end = cursor;
2165 selection.goal = goal;
2166 selection.reversed = false;
2167 }
2168 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2169 }
2170
2171 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2172 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2173 let mut selections = self.local_selections::<Point>(cx);
2174 for selection in &mut selections {
2175 let head = selection.head().to_display_point(&display_map);
2176 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2177 let cursor = head.to_point(&display_map);
2178 selection.set_head(cursor);
2179 selection.goal = goal;
2180 }
2181 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2182 }
2183
2184 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2185 if matches!(self.mode, EditorMode::SingleLine) {
2186 cx.propagate_action();
2187 return;
2188 }
2189
2190 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2191 let mut selections = self.local_selections::<Point>(cx);
2192 for selection in &mut selections {
2193 let start = selection.start.to_display_point(&display_map);
2194 let end = selection.end.to_display_point(&display_map);
2195 if start != end {
2196 selection.goal = SelectionGoal::None;
2197 }
2198
2199 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2200 let cursor = start.to_point(&display_map);
2201 selection.start = cursor;
2202 selection.end = cursor;
2203 selection.goal = goal;
2204 selection.reversed = false;
2205 }
2206 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2207 }
2208
2209 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2210 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2211 let mut selections = self.local_selections::<Point>(cx);
2212 for selection in &mut selections {
2213 let head = selection.head().to_display_point(&display_map);
2214 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2215 let cursor = head.to_point(&display_map);
2216 selection.set_head(cursor);
2217 selection.goal = goal;
2218 }
2219 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2220 }
2221
2222 pub fn move_to_previous_word_boundary(
2223 &mut self,
2224 _: &MoveToPreviousWordBoundary,
2225 cx: &mut ViewContext<Self>,
2226 ) {
2227 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2228 let mut selections = self.local_selections::<Point>(cx);
2229 for selection in &mut selections {
2230 let head = selection.head().to_display_point(&display_map);
2231 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2232 selection.start = cursor.clone();
2233 selection.end = cursor;
2234 selection.reversed = false;
2235 selection.goal = SelectionGoal::None;
2236 }
2237 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2238 }
2239
2240 pub fn select_to_previous_word_boundary(
2241 &mut self,
2242 _: &SelectToPreviousWordBoundary,
2243 cx: &mut ViewContext<Self>,
2244 ) {
2245 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2246 let mut selections = self.local_selections::<Point>(cx);
2247 for selection in &mut selections {
2248 let head = selection.head().to_display_point(&display_map);
2249 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2250 selection.set_head(cursor);
2251 selection.goal = SelectionGoal::None;
2252 }
2253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2254 }
2255
2256 pub fn delete_to_previous_word_boundary(
2257 &mut self,
2258 _: &DeleteToPreviousWordBoundary,
2259 cx: &mut ViewContext<Self>,
2260 ) {
2261 self.start_transaction(cx);
2262 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2263 let mut selections = self.local_selections::<Point>(cx);
2264 for selection in &mut selections {
2265 if selection.is_empty() {
2266 let head = selection.head().to_display_point(&display_map);
2267 let cursor =
2268 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2269 selection.set_head(cursor);
2270 selection.goal = SelectionGoal::None;
2271 }
2272 }
2273 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2274 self.insert("", cx);
2275 self.end_transaction(cx);
2276 }
2277
2278 pub fn move_to_next_word_boundary(
2279 &mut self,
2280 _: &MoveToNextWordBoundary,
2281 cx: &mut ViewContext<Self>,
2282 ) {
2283 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2284 let mut selections = self.local_selections::<Point>(cx);
2285 for selection in &mut selections {
2286 let head = selection.head().to_display_point(&display_map);
2287 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2288 selection.start = cursor;
2289 selection.end = cursor;
2290 selection.reversed = false;
2291 selection.goal = SelectionGoal::None;
2292 }
2293 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2294 }
2295
2296 pub fn select_to_next_word_boundary(
2297 &mut self,
2298 _: &SelectToNextWordBoundary,
2299 cx: &mut ViewContext<Self>,
2300 ) {
2301 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2302 let mut selections = self.local_selections::<Point>(cx);
2303 for selection in &mut selections {
2304 let head = selection.head().to_display_point(&display_map);
2305 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2306 selection.set_head(cursor);
2307 selection.goal = SelectionGoal::None;
2308 }
2309 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2310 }
2311
2312 pub fn delete_to_next_word_boundary(
2313 &mut self,
2314 _: &DeleteToNextWordBoundary,
2315 cx: &mut ViewContext<Self>,
2316 ) {
2317 self.start_transaction(cx);
2318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2319 let mut selections = self.local_selections::<Point>(cx);
2320 for selection in &mut selections {
2321 if selection.is_empty() {
2322 let head = selection.head().to_display_point(&display_map);
2323 let cursor =
2324 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2325 selection.set_head(cursor);
2326 selection.goal = SelectionGoal::None;
2327 }
2328 }
2329 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2330 self.insert("", cx);
2331 self.end_transaction(cx);
2332 }
2333
2334 pub fn move_to_beginning_of_line(
2335 &mut self,
2336 _: &MoveToBeginningOfLine,
2337 cx: &mut ViewContext<Self>,
2338 ) {
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_beginning(&display_map, head, true);
2344 let cursor = new_head.to_point(&display_map);
2345 selection.start = cursor;
2346 selection.end = cursor;
2347 selection.reversed = false;
2348 selection.goal = SelectionGoal::None;
2349 }
2350 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2351 }
2352
2353 pub fn select_to_beginning_of_line(
2354 &mut self,
2355 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2356 cx: &mut ViewContext<Self>,
2357 ) {
2358 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2359 let mut selections = self.local_selections::<Point>(cx);
2360 for selection in &mut selections {
2361 let head = selection.head().to_display_point(&display_map);
2362 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2363 selection.set_head(new_head.to_point(&display_map));
2364 selection.goal = SelectionGoal::None;
2365 }
2366 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2367 }
2368
2369 pub fn delete_to_beginning_of_line(
2370 &mut self,
2371 _: &DeleteToBeginningOfLine,
2372 cx: &mut ViewContext<Self>,
2373 ) {
2374 self.start_transaction(cx);
2375 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2376 self.backspace(&Backspace, cx);
2377 self.end_transaction(cx);
2378 }
2379
2380 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2381 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2382 let mut selections = self.local_selections::<Point>(cx);
2383 {
2384 for selection in &mut selections {
2385 let head = selection.head().to_display_point(&display_map);
2386 let new_head = movement::line_end(&display_map, head);
2387 let anchor = new_head.to_point(&display_map);
2388 selection.start = anchor.clone();
2389 selection.end = anchor;
2390 selection.reversed = false;
2391 selection.goal = SelectionGoal::None;
2392 }
2393 }
2394 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2395 }
2396
2397 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2398 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2399 let mut selections = self.local_selections::<Point>(cx);
2400 for selection in &mut selections {
2401 let head = selection.head().to_display_point(&display_map);
2402 let new_head = movement::line_end(&display_map, head);
2403 selection.set_head(new_head.to_point(&display_map));
2404 selection.goal = SelectionGoal::None;
2405 }
2406 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2407 }
2408
2409 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2410 self.start_transaction(cx);
2411 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2412 self.delete(&Delete, cx);
2413 self.end_transaction(cx);
2414 }
2415
2416 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2417 self.start_transaction(cx);
2418 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2419 self.cut(&Cut, cx);
2420 self.end_transaction(cx);
2421 }
2422
2423 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2424 if matches!(self.mode, EditorMode::SingleLine) {
2425 cx.propagate_action();
2426 return;
2427 }
2428
2429 let selection = Selection {
2430 id: post_inc(&mut self.next_selection_id),
2431 start: 0,
2432 end: 0,
2433 reversed: false,
2434 goal: SelectionGoal::None,
2435 };
2436 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2437 }
2438
2439 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2440 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2441 selection.set_head(Point::zero());
2442 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2443 }
2444
2445 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2446 if matches!(self.mode, EditorMode::SingleLine) {
2447 cx.propagate_action();
2448 return;
2449 }
2450
2451 let cursor = self.buffer.read(cx).read(cx).len();
2452 let selection = Selection {
2453 id: post_inc(&mut self.next_selection_id),
2454 start: cursor,
2455 end: cursor,
2456 reversed: false,
2457 goal: SelectionGoal::None,
2458 };
2459 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2460 }
2461
2462 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2463 self.nav_history = nav_history;
2464 }
2465
2466 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2467 self.nav_history.as_ref()
2468 }
2469
2470 fn push_to_nav_history(
2471 &self,
2472 position: Anchor,
2473 new_position: Option<Point>,
2474 cx: &mut ViewContext<Self>,
2475 ) {
2476 if let Some(nav_history) = &self.nav_history {
2477 let buffer = self.buffer.read(cx).read(cx);
2478 let offset = position.to_offset(&buffer);
2479 let point = position.to_point(&buffer);
2480 drop(buffer);
2481
2482 if let Some(new_position) = new_position {
2483 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2484 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2485 return;
2486 }
2487 }
2488
2489 nav_history.push(Some(NavigationData {
2490 anchor: position,
2491 offset,
2492 }));
2493 }
2494 }
2495
2496 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2497 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2498 selection.set_head(self.buffer.read(cx).read(cx).len());
2499 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2500 }
2501
2502 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2503 let selection = Selection {
2504 id: post_inc(&mut self.next_selection_id),
2505 start: 0,
2506 end: self.buffer.read(cx).read(cx).len(),
2507 reversed: false,
2508 goal: SelectionGoal::None,
2509 };
2510 self.update_selections(vec![selection], None, cx);
2511 }
2512
2513 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2514 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2515 let mut selections = self.local_selections::<Point>(cx);
2516 let max_point = display_map.buffer_snapshot.max_point();
2517 for selection in &mut selections {
2518 let rows = selection.spanned_rows(true, &display_map);
2519 selection.start = Point::new(rows.start, 0);
2520 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2521 selection.reversed = false;
2522 }
2523 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2524 }
2525
2526 pub fn split_selection_into_lines(
2527 &mut self,
2528 _: &SplitSelectionIntoLines,
2529 cx: &mut ViewContext<Self>,
2530 ) {
2531 let mut to_unfold = Vec::new();
2532 let mut new_selections = Vec::new();
2533 {
2534 let selections = self.local_selections::<Point>(cx);
2535 let buffer = self.buffer.read(cx).read(cx);
2536 for selection in selections {
2537 for row in selection.start.row..selection.end.row {
2538 let cursor = Point::new(row, buffer.line_len(row));
2539 new_selections.push(Selection {
2540 id: post_inc(&mut self.next_selection_id),
2541 start: cursor,
2542 end: cursor,
2543 reversed: false,
2544 goal: SelectionGoal::None,
2545 });
2546 }
2547 new_selections.push(Selection {
2548 id: selection.id,
2549 start: selection.end,
2550 end: selection.end,
2551 reversed: false,
2552 goal: SelectionGoal::None,
2553 });
2554 to_unfold.push(selection.start..selection.end);
2555 }
2556 }
2557 self.unfold_ranges(to_unfold, cx);
2558 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2559 }
2560
2561 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2562 self.add_selection(true, cx);
2563 }
2564
2565 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2566 self.add_selection(false, cx);
2567 }
2568
2569 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2570 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2571 let mut selections = self.local_selections::<Point>(cx);
2572 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2573 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2574 let range = oldest_selection.display_range(&display_map).sorted();
2575 let columns = cmp::min(range.start.column(), range.end.column())
2576 ..cmp::max(range.start.column(), range.end.column());
2577
2578 selections.clear();
2579 let mut stack = Vec::new();
2580 for row in range.start.row()..=range.end.row() {
2581 if let Some(selection) = self.build_columnar_selection(
2582 &display_map,
2583 row,
2584 &columns,
2585 oldest_selection.reversed,
2586 ) {
2587 stack.push(selection.id);
2588 selections.push(selection);
2589 }
2590 }
2591
2592 if above {
2593 stack.reverse();
2594 }
2595
2596 AddSelectionsState { above, stack }
2597 });
2598
2599 let last_added_selection = *state.stack.last().unwrap();
2600 let mut new_selections = Vec::new();
2601 if above == state.above {
2602 let end_row = if above {
2603 0
2604 } else {
2605 display_map.max_point().row()
2606 };
2607
2608 'outer: for selection in selections {
2609 if selection.id == last_added_selection {
2610 let range = selection.display_range(&display_map).sorted();
2611 debug_assert_eq!(range.start.row(), range.end.row());
2612 let mut row = range.start.row();
2613 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2614 {
2615 start..end
2616 } else {
2617 cmp::min(range.start.column(), range.end.column())
2618 ..cmp::max(range.start.column(), range.end.column())
2619 };
2620
2621 while row != end_row {
2622 if above {
2623 row -= 1;
2624 } else {
2625 row += 1;
2626 }
2627
2628 if let Some(new_selection) = self.build_columnar_selection(
2629 &display_map,
2630 row,
2631 &columns,
2632 selection.reversed,
2633 ) {
2634 state.stack.push(new_selection.id);
2635 if above {
2636 new_selections.push(new_selection);
2637 new_selections.push(selection);
2638 } else {
2639 new_selections.push(selection);
2640 new_selections.push(new_selection);
2641 }
2642
2643 continue 'outer;
2644 }
2645 }
2646 }
2647
2648 new_selections.push(selection);
2649 }
2650 } else {
2651 new_selections = selections;
2652 new_selections.retain(|s| s.id != last_added_selection);
2653 state.stack.pop();
2654 }
2655
2656 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2657 if state.stack.len() > 1 {
2658 self.add_selections_state = Some(state);
2659 }
2660 }
2661
2662 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2663 let replace_newest = action.0;
2664 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2665 let buffer = &display_map.buffer_snapshot;
2666 let mut selections = self.local_selections::<usize>(cx);
2667 if let Some(mut select_next_state) = self.select_next_state.take() {
2668 let query = &select_next_state.query;
2669 if !select_next_state.done {
2670 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2671 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2672 let mut next_selected_range = None;
2673
2674 let bytes_after_last_selection =
2675 buffer.bytes_in_range(last_selection.end..buffer.len());
2676 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2677 let query_matches = query
2678 .stream_find_iter(bytes_after_last_selection)
2679 .map(|result| (last_selection.end, result))
2680 .chain(
2681 query
2682 .stream_find_iter(bytes_before_first_selection)
2683 .map(|result| (0, result)),
2684 );
2685 for (start_offset, query_match) in query_matches {
2686 let query_match = query_match.unwrap(); // can only fail due to I/O
2687 let offset_range =
2688 start_offset + query_match.start()..start_offset + query_match.end();
2689 let display_range = offset_range.start.to_display_point(&display_map)
2690 ..offset_range.end.to_display_point(&display_map);
2691
2692 if !select_next_state.wordwise
2693 || (!movement::is_inside_word(&display_map, display_range.start)
2694 && !movement::is_inside_word(&display_map, display_range.end))
2695 {
2696 next_selected_range = Some(offset_range);
2697 break;
2698 }
2699 }
2700
2701 if let Some(next_selected_range) = next_selected_range {
2702 if replace_newest {
2703 if let Some(newest_id) =
2704 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2705 {
2706 selections.retain(|s| s.id != newest_id);
2707 }
2708 }
2709 selections.push(Selection {
2710 id: post_inc(&mut self.next_selection_id),
2711 start: next_selected_range.start,
2712 end: next_selected_range.end,
2713 reversed: false,
2714 goal: SelectionGoal::None,
2715 });
2716 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2717 } else {
2718 select_next_state.done = true;
2719 }
2720 }
2721
2722 self.select_next_state = Some(select_next_state);
2723 } else if selections.len() == 1 {
2724 let selection = selections.last_mut().unwrap();
2725 if selection.start == selection.end {
2726 let word_range = movement::surrounding_word(
2727 &display_map,
2728 selection.start.to_display_point(&display_map),
2729 );
2730 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2731 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2732 selection.goal = SelectionGoal::None;
2733 selection.reversed = false;
2734
2735 let query = buffer
2736 .text_for_range(selection.start..selection.end)
2737 .collect::<String>();
2738 let select_state = SelectNextState {
2739 query: AhoCorasick::new_auto_configured(&[query]),
2740 wordwise: true,
2741 done: false,
2742 };
2743 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2744 self.select_next_state = Some(select_state);
2745 } else {
2746 let query = buffer
2747 .text_for_range(selection.start..selection.end)
2748 .collect::<String>();
2749 self.select_next_state = Some(SelectNextState {
2750 query: AhoCorasick::new_auto_configured(&[query]),
2751 wordwise: false,
2752 done: false,
2753 });
2754 self.select_next(action, cx);
2755 }
2756 }
2757 }
2758
2759 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2760 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2761 // as that portion won't be used for detecting if a line is a comment.
2762 let full_comment_prefix =
2763 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2764 prefix.to_string()
2765 } else {
2766 return;
2767 };
2768 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2769 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2770
2771 self.start_transaction(cx);
2772 let mut selections = self.local_selections::<Point>(cx);
2773 let mut all_selection_lines_are_comments = true;
2774 let mut edit_ranges = Vec::new();
2775 let mut last_toggled_row = None;
2776 self.buffer.update(cx, |buffer, cx| {
2777 for selection in &mut selections {
2778 edit_ranges.clear();
2779 let snapshot = buffer.snapshot(cx);
2780
2781 let end_row =
2782 if selection.end.row > selection.start.row && selection.end.column == 0 {
2783 selection.end.row
2784 } else {
2785 selection.end.row + 1
2786 };
2787
2788 for row in selection.start.row..end_row {
2789 // If multiple selections contain a given row, avoid processing that
2790 // row more than once.
2791 if last_toggled_row == Some(row) {
2792 continue;
2793 } else {
2794 last_toggled_row = Some(row);
2795 }
2796
2797 if snapshot.is_line_blank(row) {
2798 continue;
2799 }
2800
2801 let start = Point::new(row, snapshot.indent_column_for_line(row));
2802 let mut line_bytes = snapshot
2803 .bytes_in_range(start..snapshot.max_point())
2804 .flatten()
2805 .copied();
2806
2807 // If this line currently begins with the line comment prefix, then record
2808 // the range containing the prefix.
2809 if all_selection_lines_are_comments
2810 && line_bytes
2811 .by_ref()
2812 .take(comment_prefix.len())
2813 .eq(comment_prefix.bytes())
2814 {
2815 // Include any whitespace that matches the comment prefix.
2816 let matching_whitespace_len = line_bytes
2817 .zip(comment_prefix_whitespace.bytes())
2818 .take_while(|(a, b)| a == b)
2819 .count() as u32;
2820 let end = Point::new(
2821 row,
2822 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2823 );
2824 edit_ranges.push(start..end);
2825 }
2826 // If this line does not begin with the line comment prefix, then record
2827 // the position where the prefix should be inserted.
2828 else {
2829 all_selection_lines_are_comments = false;
2830 edit_ranges.push(start..start);
2831 }
2832 }
2833
2834 if !edit_ranges.is_empty() {
2835 if all_selection_lines_are_comments {
2836 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2837 } else {
2838 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2839 let edit_ranges = edit_ranges.iter().map(|range| {
2840 let position = Point::new(range.start.row, min_column);
2841 position..position
2842 });
2843 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2844 }
2845 }
2846 }
2847 });
2848
2849 self.update_selections(
2850 self.local_selections::<usize>(cx),
2851 Some(Autoscroll::Fit),
2852 cx,
2853 );
2854 self.end_transaction(cx);
2855 }
2856
2857 pub fn select_larger_syntax_node(
2858 &mut self,
2859 _: &SelectLargerSyntaxNode,
2860 cx: &mut ViewContext<Self>,
2861 ) {
2862 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2863 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2864 let buffer = self.buffer.read(cx).snapshot(cx);
2865
2866 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2867 let mut selected_larger_node = false;
2868 let new_selections = old_selections
2869 .iter()
2870 .map(|selection| {
2871 let old_range = selection.start..selection.end;
2872 let mut new_range = old_range.clone();
2873 while let Some(containing_range) =
2874 buffer.range_for_syntax_ancestor(new_range.clone())
2875 {
2876 new_range = containing_range;
2877 if !display_map.intersects_fold(new_range.start)
2878 && !display_map.intersects_fold(new_range.end)
2879 {
2880 break;
2881 }
2882 }
2883
2884 selected_larger_node |= new_range != old_range;
2885 Selection {
2886 id: selection.id,
2887 start: new_range.start,
2888 end: new_range.end,
2889 goal: SelectionGoal::None,
2890 reversed: selection.reversed,
2891 }
2892 })
2893 .collect::<Vec<_>>();
2894
2895 if selected_larger_node {
2896 stack.push(old_selections);
2897 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2898 }
2899 self.select_larger_syntax_node_stack = stack;
2900 }
2901
2902 pub fn select_smaller_syntax_node(
2903 &mut self,
2904 _: &SelectSmallerSyntaxNode,
2905 cx: &mut ViewContext<Self>,
2906 ) {
2907 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2908 if let Some(selections) = stack.pop() {
2909 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2910 }
2911 self.select_larger_syntax_node_stack = stack;
2912 }
2913
2914 pub fn move_to_enclosing_bracket(
2915 &mut self,
2916 _: &MoveToEnclosingBracket,
2917 cx: &mut ViewContext<Self>,
2918 ) {
2919 let mut selections = self.local_selections::<usize>(cx);
2920 let buffer = self.buffer.read(cx).snapshot(cx);
2921 for selection in &mut selections {
2922 if let Some((open_range, close_range)) =
2923 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2924 {
2925 let close_range = close_range.to_inclusive();
2926 let destination = if close_range.contains(&selection.start)
2927 && close_range.contains(&selection.end)
2928 {
2929 open_range.end
2930 } else {
2931 *close_range.start()
2932 };
2933 selection.start = destination;
2934 selection.end = destination;
2935 }
2936 }
2937
2938 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2939 }
2940
2941 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2942 let buffer = self.buffer.read(cx).snapshot(cx);
2943 let selection = self.newest_selection::<usize>(&buffer);
2944 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2945 active_diagnostics
2946 .primary_range
2947 .to_offset(&buffer)
2948 .to_inclusive()
2949 });
2950 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2951 if active_primary_range.contains(&selection.head()) {
2952 *active_primary_range.end()
2953 } else {
2954 selection.head()
2955 }
2956 } else {
2957 selection.head()
2958 };
2959
2960 loop {
2961 let next_group = buffer
2962 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2963 .find_map(|entry| {
2964 if entry.diagnostic.is_primary
2965 && !entry.range.is_empty()
2966 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2967 {
2968 Some((entry.range, entry.diagnostic.group_id))
2969 } else {
2970 None
2971 }
2972 });
2973
2974 if let Some((primary_range, group_id)) = next_group {
2975 self.activate_diagnostics(group_id, cx);
2976 self.update_selections(
2977 vec![Selection {
2978 id: selection.id,
2979 start: primary_range.start,
2980 end: primary_range.start,
2981 reversed: false,
2982 goal: SelectionGoal::None,
2983 }],
2984 Some(Autoscroll::Center),
2985 cx,
2986 );
2987 break;
2988 } else if search_start == 0 {
2989 break;
2990 } else {
2991 // Cycle around to the start of the buffer.
2992 search_start = 0;
2993 }
2994 }
2995 }
2996
2997 pub fn go_to_definition(
2998 workspace: &mut Workspace,
2999 _: &GoToDefinition,
3000 cx: &mut ViewContext<Workspace>,
3001 ) {
3002 let active_item = workspace.active_item(cx);
3003 let editor_handle = if let Some(editor) = active_item
3004 .as_ref()
3005 .and_then(|item| item.act_as::<Self>(cx))
3006 {
3007 editor
3008 } else {
3009 return;
3010 };
3011
3012 let editor = editor_handle.read(cx);
3013 let buffer = editor.buffer.read(cx);
3014 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3015 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3016 let definitions = workspace
3017 .project()
3018 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3019 cx.spawn(|workspace, mut cx| async move {
3020 let definitions = definitions.await?;
3021 workspace.update(&mut cx, |workspace, cx| {
3022 for definition in definitions {
3023 let range = definition
3024 .target_range
3025 .to_offset(definition.target_buffer.read(cx));
3026 let target_editor_handle = workspace
3027 .open_item(BufferItemHandle(definition.target_buffer), cx)
3028 .downcast::<Self>()
3029 .unwrap();
3030
3031 target_editor_handle.update(cx, |target_editor, cx| {
3032 // When selecting a definition in a different buffer, disable the nav history
3033 // to avoid creating a history entry at the previous cursor location.
3034 let disabled_history = if editor_handle == target_editor_handle {
3035 None
3036 } else {
3037 target_editor.nav_history.take()
3038 };
3039 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3040 if disabled_history.is_some() {
3041 target_editor.nav_history = disabled_history;
3042 }
3043 });
3044 }
3045 });
3046
3047 Ok::<(), anyhow::Error>(())
3048 })
3049 .detach_and_log_err(cx);
3050 }
3051
3052 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3053 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3054 let buffer = self.buffer.read(cx).snapshot(cx);
3055 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3056 let is_valid = buffer
3057 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3058 .any(|entry| {
3059 entry.diagnostic.is_primary
3060 && !entry.range.is_empty()
3061 && entry.range.start == primary_range_start
3062 && entry.diagnostic.message == active_diagnostics.primary_message
3063 });
3064
3065 if is_valid != active_diagnostics.is_valid {
3066 active_diagnostics.is_valid = is_valid;
3067 let mut new_styles = HashMap::default();
3068 for (block_id, diagnostic) in &active_diagnostics.blocks {
3069 new_styles.insert(
3070 *block_id,
3071 diagnostic_block_renderer(
3072 diagnostic.clone(),
3073 is_valid,
3074 self.build_settings.clone(),
3075 ),
3076 );
3077 }
3078 self.display_map
3079 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3080 }
3081 }
3082 }
3083
3084 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3085 self.dismiss_diagnostics(cx);
3086 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3087 let buffer = self.buffer.read(cx).snapshot(cx);
3088
3089 let mut primary_range = None;
3090 let mut primary_message = None;
3091 let mut group_end = Point::zero();
3092 let diagnostic_group = buffer
3093 .diagnostic_group::<Point>(group_id)
3094 .map(|entry| {
3095 if entry.range.end > group_end {
3096 group_end = entry.range.end;
3097 }
3098 if entry.diagnostic.is_primary {
3099 primary_range = Some(entry.range.clone());
3100 primary_message = Some(entry.diagnostic.message.clone());
3101 }
3102 entry
3103 })
3104 .collect::<Vec<_>>();
3105 let primary_range = primary_range.unwrap();
3106 let primary_message = primary_message.unwrap();
3107 let primary_range =
3108 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3109
3110 let blocks = display_map
3111 .insert_blocks(
3112 diagnostic_group.iter().map(|entry| {
3113 let build_settings = self.build_settings.clone();
3114 let diagnostic = entry.diagnostic.clone();
3115 let message_height = diagnostic.message.lines().count() as u8;
3116
3117 BlockProperties {
3118 position: buffer.anchor_after(entry.range.start),
3119 height: message_height,
3120 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3121 disposition: BlockDisposition::Below,
3122 }
3123 }),
3124 cx,
3125 )
3126 .into_iter()
3127 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3128 .collect();
3129
3130 Some(ActiveDiagnosticGroup {
3131 primary_range,
3132 primary_message,
3133 blocks,
3134 is_valid: true,
3135 })
3136 });
3137 }
3138
3139 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3140 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3141 self.display_map.update(cx, |display_map, cx| {
3142 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3143 });
3144 cx.notify();
3145 }
3146 }
3147
3148 fn build_columnar_selection(
3149 &mut self,
3150 display_map: &DisplaySnapshot,
3151 row: u32,
3152 columns: &Range<u32>,
3153 reversed: bool,
3154 ) -> Option<Selection<Point>> {
3155 let is_empty = columns.start == columns.end;
3156 let line_len = display_map.line_len(row);
3157 if columns.start < line_len || (is_empty && columns.start == line_len) {
3158 let start = DisplayPoint::new(row, columns.start);
3159 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3160 Some(Selection {
3161 id: post_inc(&mut self.next_selection_id),
3162 start: start.to_point(display_map),
3163 end: end.to_point(display_map),
3164 reversed,
3165 goal: SelectionGoal::ColumnRange {
3166 start: columns.start,
3167 end: columns.end,
3168 },
3169 })
3170 } else {
3171 None
3172 }
3173 }
3174
3175 pub fn local_selections_in_range(
3176 &self,
3177 range: Range<Anchor>,
3178 display_map: &DisplaySnapshot,
3179 ) -> Vec<Selection<Point>> {
3180 let buffer = &display_map.buffer_snapshot;
3181
3182 let start_ix = match self
3183 .selections
3184 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3185 {
3186 Ok(ix) | Err(ix) => ix,
3187 };
3188 let end_ix = match self
3189 .selections
3190 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3191 {
3192 Ok(ix) => ix + 1,
3193 Err(ix) => ix,
3194 };
3195
3196 fn point_selection(
3197 selection: &Selection<Anchor>,
3198 buffer: &MultiBufferSnapshot,
3199 ) -> Selection<Point> {
3200 let start = selection.start.to_point(&buffer);
3201 let end = selection.end.to_point(&buffer);
3202 Selection {
3203 id: selection.id,
3204 start,
3205 end,
3206 reversed: selection.reversed,
3207 goal: selection.goal,
3208 }
3209 }
3210
3211 self.selections[start_ix..end_ix]
3212 .iter()
3213 .chain(
3214 self.pending_selection
3215 .as_ref()
3216 .map(|pending| &pending.selection),
3217 )
3218 .map(|s| point_selection(s, &buffer))
3219 .collect()
3220 }
3221
3222 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3223 where
3224 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3225 {
3226 let buffer = self.buffer.read(cx).snapshot(cx);
3227 let mut selections = self
3228 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3229 .peekable();
3230
3231 let mut pending_selection = self.pending_selection::<D>(&buffer);
3232
3233 iter::from_fn(move || {
3234 if let Some(pending) = pending_selection.as_mut() {
3235 while let Some(next_selection) = selections.peek() {
3236 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3237 let next_selection = selections.next().unwrap();
3238 if next_selection.start < pending.start {
3239 pending.start = next_selection.start;
3240 }
3241 if next_selection.end > pending.end {
3242 pending.end = next_selection.end;
3243 }
3244 } else if next_selection.end < pending.start {
3245 return selections.next();
3246 } else {
3247 break;
3248 }
3249 }
3250
3251 pending_selection.take()
3252 } else {
3253 selections.next()
3254 }
3255 })
3256 .collect()
3257 }
3258
3259 fn resolve_selections<'a, D, I>(
3260 &self,
3261 selections: I,
3262 snapshot: &MultiBufferSnapshot,
3263 ) -> impl 'a + Iterator<Item = Selection<D>>
3264 where
3265 D: TextDimension + Ord + Sub<D, Output = D>,
3266 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3267 {
3268 let (to_summarize, selections) = selections.into_iter().tee();
3269 let mut summaries = snapshot
3270 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3271 .into_iter();
3272 selections.map(move |s| Selection {
3273 id: s.id,
3274 start: summaries.next().unwrap(),
3275 end: summaries.next().unwrap(),
3276 reversed: s.reversed,
3277 goal: s.goal,
3278 })
3279 }
3280
3281 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3282 &self,
3283 snapshot: &MultiBufferSnapshot,
3284 ) -> Option<Selection<D>> {
3285 self.pending_selection
3286 .as_ref()
3287 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3288 }
3289
3290 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3291 &self,
3292 selection: &Selection<Anchor>,
3293 buffer: &MultiBufferSnapshot,
3294 ) -> Selection<D> {
3295 Selection {
3296 id: selection.id,
3297 start: selection.start.summary::<D>(&buffer),
3298 end: selection.end.summary::<D>(&buffer),
3299 reversed: selection.reversed,
3300 goal: selection.goal,
3301 }
3302 }
3303
3304 fn selection_count<'a>(&self) -> usize {
3305 let mut count = self.selections.len();
3306 if self.pending_selection.is_some() {
3307 count += 1;
3308 }
3309 count
3310 }
3311
3312 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3313 &self,
3314 snapshot: &MultiBufferSnapshot,
3315 ) -> Selection<D> {
3316 self.selections
3317 .iter()
3318 .min_by_key(|s| s.id)
3319 .map(|selection| self.resolve_selection(selection, snapshot))
3320 .or_else(|| self.pending_selection(snapshot))
3321 .unwrap()
3322 }
3323
3324 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3325 &self,
3326 snapshot: &MultiBufferSnapshot,
3327 ) -> Selection<D> {
3328 self.resolve_selection(self.newest_selection_internal().unwrap(), snapshot)
3329 }
3330
3331 pub fn newest_selection_internal(&self) -> Option<&Selection<Anchor>> {
3332 self.pending_selection
3333 .as_ref()
3334 .map(|s| &s.selection)
3335 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3336 }
3337
3338 pub fn update_selections<T>(
3339 &mut self,
3340 mut selections: Vec<Selection<T>>,
3341 autoscroll: Option<Autoscroll>,
3342 cx: &mut ViewContext<Self>,
3343 ) where
3344 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3345 {
3346 let buffer = self.buffer.read(cx).snapshot(cx);
3347 let old_cursor_position = self.newest_selection_internal().map(|s| s.head());
3348 selections.sort_unstable_by_key(|s| s.start);
3349
3350 // Merge overlapping selections.
3351 let mut i = 1;
3352 while i < selections.len() {
3353 if selections[i - 1].end >= selections[i].start {
3354 let removed = selections.remove(i);
3355 if removed.start < selections[i - 1].start {
3356 selections[i - 1].start = removed.start;
3357 }
3358 if removed.end > selections[i - 1].end {
3359 selections[i - 1].end = removed.end;
3360 }
3361 } else {
3362 i += 1;
3363 }
3364 }
3365
3366 self.pending_selection = None;
3367 self.add_selections_state = None;
3368 self.select_next_state = None;
3369 self.select_larger_syntax_node_stack.clear();
3370 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3371 let all_selections_inside_autoclose_ranges =
3372 if selections.len() == autoclose_pair.ranges.len() {
3373 selections
3374 .iter()
3375 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3376 .all(|(selection, autoclose_range)| {
3377 let head = selection.head().to_point(&buffer);
3378 autoclose_range.start <= head && autoclose_range.end >= head
3379 })
3380 } else {
3381 false
3382 };
3383
3384 if all_selections_inside_autoclose_ranges {
3385 break;
3386 } else {
3387 self.autoclose_stack.pop();
3388 }
3389 }
3390
3391 if let Some(old_cursor_position) = old_cursor_position {
3392 let new_cursor_position = selections
3393 .iter()
3394 .max_by_key(|s| s.id)
3395 .map(|s| s.head().to_point(&buffer));
3396 if new_cursor_position.is_some() {
3397 self.push_to_nav_history(old_cursor_position, new_cursor_position, cx);
3398 }
3399 }
3400
3401 if let Some(autoscroll) = autoscroll {
3402 self.request_autoscroll(autoscroll, cx);
3403 }
3404 self.pause_cursor_blinking(cx);
3405
3406 self.set_selections(
3407 Arc::from_iter(selections.into_iter().map(|selection| {
3408 let end_bias = if selection.end > selection.start {
3409 Bias::Left
3410 } else {
3411 Bias::Right
3412 };
3413 Selection {
3414 id: selection.id,
3415 start: buffer.anchor_after(selection.start),
3416 end: buffer.anchor_at(selection.end, end_bias),
3417 reversed: selection.reversed,
3418 goal: selection.goal,
3419 }
3420 })),
3421 cx,
3422 );
3423 }
3424
3425 /// Compute new ranges for any selections that were located in excerpts that have
3426 /// since been removed.
3427 ///
3428 /// Returns a `HashMap` indicating which selections whose former head position
3429 /// was no longer present. The keys of the map are selection ids. The values are
3430 /// the id of the new excerpt where the head of the selection has been moved.
3431 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3432 let snapshot = self.buffer.read(cx).read(cx);
3433 let anchors_with_status = snapshot.refresh_anchors(
3434 self.selections
3435 .iter()
3436 .flat_map(|selection| [&selection.start, &selection.end]),
3437 );
3438 let offsets =
3439 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3440 let offsets = offsets.chunks(2);
3441 let statuses = anchors_with_status
3442 .chunks(2)
3443 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3444
3445 let mut selections_with_lost_position = HashMap::default();
3446 let new_selections = offsets
3447 .zip(statuses)
3448 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3449 let selection = &self.selections[selection_ix];
3450 let kept_head = if selection.reversed {
3451 kept_start
3452 } else {
3453 kept_end
3454 };
3455 if !kept_head {
3456 selections_with_lost_position
3457 .insert(selection.id, selection.head().excerpt_id.clone());
3458 }
3459
3460 Selection {
3461 id: selection.id,
3462 start: offsets[0],
3463 end: offsets[1],
3464 reversed: selection.reversed,
3465 goal: selection.goal,
3466 }
3467 })
3468 .collect();
3469 drop(snapshot);
3470 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3471 selections_with_lost_position
3472 }
3473
3474 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3475 self.selections = selections;
3476 self.buffer.update(cx, |buffer, cx| {
3477 buffer.set_active_selections(&self.selections, cx)
3478 });
3479 }
3480
3481 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3482 self.autoscroll_request = Some(autoscroll);
3483 cx.notify();
3484 }
3485
3486 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3487 self.start_transaction_at(Instant::now(), cx);
3488 }
3489
3490 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3491 self.end_selection(cx);
3492 if let Some(tx_id) = self
3493 .buffer
3494 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3495 {
3496 self.selection_history
3497 .insert(tx_id, (self.selections.clone(), None));
3498 }
3499 }
3500
3501 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3502 self.end_transaction_at(Instant::now(), cx);
3503 }
3504
3505 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3506 if let Some(tx_id) = self
3507 .buffer
3508 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3509 {
3510 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3511 }
3512 }
3513
3514 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3515 log::info!("Editor::page_up");
3516 }
3517
3518 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3519 log::info!("Editor::page_down");
3520 }
3521
3522 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3523 let mut fold_ranges = Vec::new();
3524
3525 let selections = self.local_selections::<Point>(cx);
3526 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3527 for selection in selections {
3528 let range = selection.display_range(&display_map).sorted();
3529 let buffer_start_row = range.start.to_point(&display_map).row;
3530
3531 for row in (0..=range.end.row()).rev() {
3532 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3533 let fold_range = self.foldable_range_for_line(&display_map, row);
3534 if fold_range.end.row >= buffer_start_row {
3535 fold_ranges.push(fold_range);
3536 if row <= range.start.row() {
3537 break;
3538 }
3539 }
3540 }
3541 }
3542 }
3543
3544 self.fold_ranges(fold_ranges, cx);
3545 }
3546
3547 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3548 let selections = self.local_selections::<Point>(cx);
3549 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3550 let buffer = &display_map.buffer_snapshot;
3551 let ranges = selections
3552 .iter()
3553 .map(|s| {
3554 let range = s.display_range(&display_map).sorted();
3555 let mut start = range.start.to_point(&display_map);
3556 let mut end = range.end.to_point(&display_map);
3557 start.column = 0;
3558 end.column = buffer.line_len(end.row);
3559 start..end
3560 })
3561 .collect::<Vec<_>>();
3562 self.unfold_ranges(ranges, cx);
3563 }
3564
3565 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3566 let max_point = display_map.max_point();
3567 if display_row >= max_point.row() {
3568 false
3569 } else {
3570 let (start_indent, is_blank) = display_map.line_indent(display_row);
3571 if is_blank {
3572 false
3573 } else {
3574 for display_row in display_row + 1..=max_point.row() {
3575 let (indent, is_blank) = display_map.line_indent(display_row);
3576 if !is_blank {
3577 return indent > start_indent;
3578 }
3579 }
3580 false
3581 }
3582 }
3583 }
3584
3585 fn foldable_range_for_line(
3586 &self,
3587 display_map: &DisplaySnapshot,
3588 start_row: u32,
3589 ) -> Range<Point> {
3590 let max_point = display_map.max_point();
3591
3592 let (start_indent, _) = display_map.line_indent(start_row);
3593 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3594 let mut end = None;
3595 for row in start_row + 1..=max_point.row() {
3596 let (indent, is_blank) = display_map.line_indent(row);
3597 if !is_blank && indent <= start_indent {
3598 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3599 break;
3600 }
3601 }
3602
3603 let end = end.unwrap_or(max_point);
3604 return start.to_point(display_map)..end.to_point(display_map);
3605 }
3606
3607 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3608 let selections = self.local_selections::<Point>(cx);
3609 let ranges = selections.into_iter().map(|s| s.start..s.end);
3610 self.fold_ranges(ranges, cx);
3611 }
3612
3613 fn fold_ranges<T: ToOffset>(
3614 &mut self,
3615 ranges: impl IntoIterator<Item = Range<T>>,
3616 cx: &mut ViewContext<Self>,
3617 ) {
3618 let mut ranges = ranges.into_iter().peekable();
3619 if ranges.peek().is_some() {
3620 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3621 self.request_autoscroll(Autoscroll::Fit, cx);
3622 cx.notify();
3623 }
3624 }
3625
3626 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3627 if !ranges.is_empty() {
3628 self.display_map
3629 .update(cx, |map, cx| map.unfold(ranges, cx));
3630 self.request_autoscroll(Autoscroll::Fit, cx);
3631 cx.notify();
3632 }
3633 }
3634
3635 pub fn insert_blocks(
3636 &mut self,
3637 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3638 cx: &mut ViewContext<Self>,
3639 ) -> Vec<BlockId> {
3640 let blocks = self
3641 .display_map
3642 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3643 self.request_autoscroll(Autoscroll::Fit, cx);
3644 blocks
3645 }
3646
3647 pub fn replace_blocks(
3648 &mut self,
3649 blocks: HashMap<BlockId, RenderBlock>,
3650 cx: &mut ViewContext<Self>,
3651 ) {
3652 self.display_map
3653 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3654 self.request_autoscroll(Autoscroll::Fit, cx);
3655 }
3656
3657 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3658 self.display_map.update(cx, |display_map, cx| {
3659 display_map.remove_blocks(block_ids, cx)
3660 });
3661 }
3662
3663 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3664 self.display_map
3665 .update(cx, |map, cx| map.snapshot(cx))
3666 .longest_row()
3667 }
3668
3669 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3670 self.display_map
3671 .update(cx, |map, cx| map.snapshot(cx))
3672 .max_point()
3673 }
3674
3675 pub fn text(&self, cx: &AppContext) -> String {
3676 self.buffer.read(cx).read(cx).text()
3677 }
3678
3679 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3680 self.display_map
3681 .update(cx, |map, cx| map.snapshot(cx))
3682 .text()
3683 }
3684
3685 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3686 self.display_map
3687 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3688 }
3689
3690 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
3691 self.highlighted_rows = rows;
3692 }
3693
3694 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
3695 self.highlighted_rows.clone()
3696 }
3697
3698 fn next_blink_epoch(&mut self) -> usize {
3699 self.blink_epoch += 1;
3700 self.blink_epoch
3701 }
3702
3703 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3704 self.show_local_cursors = true;
3705 cx.notify();
3706
3707 let epoch = self.next_blink_epoch();
3708 cx.spawn(|this, mut cx| {
3709 let this = this.downgrade();
3710 async move {
3711 Timer::after(CURSOR_BLINK_INTERVAL).await;
3712 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3713 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3714 }
3715 }
3716 })
3717 .detach();
3718 }
3719
3720 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3721 if epoch == self.blink_epoch {
3722 self.blinking_paused = false;
3723 self.blink_cursors(epoch, cx);
3724 }
3725 }
3726
3727 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3728 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3729 self.show_local_cursors = !self.show_local_cursors;
3730 cx.notify();
3731
3732 let epoch = self.next_blink_epoch();
3733 cx.spawn(|this, mut cx| {
3734 let this = this.downgrade();
3735 async move {
3736 Timer::after(CURSOR_BLINK_INTERVAL).await;
3737 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3738 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3739 }
3740 }
3741 })
3742 .detach();
3743 }
3744 }
3745
3746 pub fn show_local_cursors(&self) -> bool {
3747 self.show_local_cursors
3748 }
3749
3750 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3751 self.refresh_active_diagnostics(cx);
3752 cx.notify();
3753 }
3754
3755 fn on_buffer_event(
3756 &mut self,
3757 _: ModelHandle<MultiBuffer>,
3758 event: &language::Event,
3759 cx: &mut ViewContext<Self>,
3760 ) {
3761 match event {
3762 language::Event::Edited => cx.emit(Event::Edited),
3763 language::Event::Dirtied => cx.emit(Event::Dirtied),
3764 language::Event::Saved => cx.emit(Event::Saved),
3765 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3766 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3767 language::Event::Closed => cx.emit(Event::Closed),
3768 _ => {}
3769 }
3770 }
3771
3772 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3773 cx.notify();
3774 }
3775}
3776
3777impl EditorSnapshot {
3778 pub fn is_focused(&self) -> bool {
3779 self.is_focused
3780 }
3781
3782 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3783 self.placeholder_text.as_ref()
3784 }
3785
3786 pub fn scroll_position(&self) -> Vector2F {
3787 compute_scroll_position(
3788 &self.display_snapshot,
3789 self.scroll_position,
3790 &self.scroll_top_anchor,
3791 )
3792 }
3793}
3794
3795impl Deref for EditorSnapshot {
3796 type Target = DisplaySnapshot;
3797
3798 fn deref(&self) -> &Self::Target {
3799 &self.display_snapshot
3800 }
3801}
3802
3803impl EditorSettings {
3804 #[cfg(any(test, feature = "test-support"))]
3805 pub fn test(cx: &AppContext) -> Self {
3806 Self {
3807 tab_size: 4,
3808 soft_wrap: SoftWrap::None,
3809 style: {
3810 let font_cache: &gpui::FontCache = cx.font_cache();
3811 let font_family_name = Arc::from("Monaco");
3812 let font_properties = Default::default();
3813 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3814 let font_id = font_cache
3815 .select_font(font_family_id, &font_properties)
3816 .unwrap();
3817 EditorStyle {
3818 text: gpui::fonts::TextStyle {
3819 font_family_name,
3820 font_family_id,
3821 font_id,
3822 font_size: 14.,
3823 color: gpui::color::Color::from_u32(0xff0000ff),
3824 font_properties,
3825 underline: None,
3826 },
3827 placeholder_text: None,
3828 background: Default::default(),
3829 gutter_background: Default::default(),
3830 active_line_background: Default::default(),
3831 highlighted_line_background: Default::default(),
3832 line_number: Default::default(),
3833 line_number_active: Default::default(),
3834 selection: Default::default(),
3835 guest_selections: Default::default(),
3836 syntax: Default::default(),
3837 diagnostic_path_header: Default::default(),
3838 error_diagnostic: Default::default(),
3839 invalid_error_diagnostic: Default::default(),
3840 warning_diagnostic: Default::default(),
3841 invalid_warning_diagnostic: Default::default(),
3842 information_diagnostic: Default::default(),
3843 invalid_information_diagnostic: Default::default(),
3844 hint_diagnostic: Default::default(),
3845 invalid_hint_diagnostic: Default::default(),
3846 }
3847 },
3848 }
3849 }
3850}
3851
3852fn compute_scroll_position(
3853 snapshot: &DisplaySnapshot,
3854 mut scroll_position: Vector2F,
3855 scroll_top_anchor: &Option<Anchor>,
3856) -> Vector2F {
3857 if let Some(anchor) = scroll_top_anchor {
3858 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
3859 scroll_position.set_y(scroll_top + scroll_position.y());
3860 } else {
3861 scroll_position.set_y(0.);
3862 }
3863 scroll_position
3864}
3865
3866#[derive(Copy, Clone)]
3867pub enum Event {
3868 Activate,
3869 Edited,
3870 Blurred,
3871 Dirtied,
3872 Saved,
3873 FileHandleChanged,
3874 Closed,
3875}
3876
3877impl Entity for Editor {
3878 type Event = Event;
3879}
3880
3881impl View for Editor {
3882 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3883 let settings = (self.build_settings)(cx);
3884 self.display_map.update(cx, |map, cx| {
3885 map.set_font(
3886 settings.style.text.font_id,
3887 settings.style.text.font_size,
3888 cx,
3889 )
3890 });
3891 EditorElement::new(self.handle.clone(), settings).boxed()
3892 }
3893
3894 fn ui_name() -> &'static str {
3895 "Editor"
3896 }
3897
3898 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3899 self.focused = true;
3900 self.blink_cursors(self.blink_epoch, cx);
3901 self.buffer.update(cx, |buffer, cx| {
3902 buffer.set_active_selections(&self.selections, cx)
3903 });
3904 }
3905
3906 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3907 self.focused = false;
3908 self.show_local_cursors = false;
3909 self.buffer
3910 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3911 cx.emit(Event::Blurred);
3912 cx.notify();
3913 }
3914
3915 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3916 let mut cx = Self::default_keymap_context();
3917 let mode = match self.mode {
3918 EditorMode::SingleLine => "single_line",
3919 EditorMode::AutoHeight { .. } => "auto_height",
3920 EditorMode::Full => "full",
3921 };
3922 cx.map.insert("mode".into(), mode.into());
3923 cx
3924 }
3925}
3926
3927impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3928 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3929 let start = self.start.to_point(buffer);
3930 let end = self.end.to_point(buffer);
3931 if self.reversed {
3932 end..start
3933 } else {
3934 start..end
3935 }
3936 }
3937
3938 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3939 let start = self.start.to_offset(buffer);
3940 let end = self.end.to_offset(buffer);
3941 if self.reversed {
3942 end..start
3943 } else {
3944 start..end
3945 }
3946 }
3947
3948 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3949 let start = self
3950 .start
3951 .to_point(&map.buffer_snapshot)
3952 .to_display_point(map);
3953 let end = self
3954 .end
3955 .to_point(&map.buffer_snapshot)
3956 .to_display_point(map);
3957 if self.reversed {
3958 end..start
3959 } else {
3960 start..end
3961 }
3962 }
3963
3964 fn spanned_rows(
3965 &self,
3966 include_end_if_at_line_start: bool,
3967 map: &DisplaySnapshot,
3968 ) -> Range<u32> {
3969 let start = self.start.to_point(&map.buffer_snapshot);
3970 let mut end = self.end.to_point(&map.buffer_snapshot);
3971 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
3972 end.row -= 1;
3973 }
3974
3975 let buffer_start = map.prev_line_boundary(start).0;
3976 let buffer_end = map.next_line_boundary(end).0;
3977 buffer_start.row..buffer_end.row + 1
3978 }
3979}
3980
3981pub fn diagnostic_block_renderer(
3982 diagnostic: Diagnostic,
3983 is_valid: bool,
3984 build_settings: BuildSettings,
3985) -> RenderBlock {
3986 Arc::new(move |cx: &BlockContext| {
3987 let settings = build_settings(cx);
3988 let mut text_style = settings.style.text.clone();
3989 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3990 Text::new(diagnostic.message.clone(), text_style)
3991 .with_soft_wrap(false)
3992 .contained()
3993 .with_margin_left(cx.anchor_x)
3994 .boxed()
3995 })
3996}
3997
3998pub fn diagnostic_style(
3999 severity: DiagnosticSeverity,
4000 valid: bool,
4001 style: &EditorStyle,
4002) -> DiagnosticStyle {
4003 match (severity, valid) {
4004 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
4005 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
4006 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
4007 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
4008 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
4009 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
4010 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
4011 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
4012 _ => Default::default(),
4013 }
4014}
4015
4016pub fn settings_builder(
4017 buffer: WeakModelHandle<MultiBuffer>,
4018 settings: watch::Receiver<workspace::Settings>,
4019) -> BuildSettings {
4020 Arc::new(move |cx| {
4021 let settings = settings.borrow();
4022 let font_cache = cx.font_cache();
4023 let font_family_id = settings.buffer_font_family;
4024 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4025 let font_properties = Default::default();
4026 let font_id = font_cache
4027 .select_font(font_family_id, &font_properties)
4028 .unwrap();
4029 let font_size = settings.buffer_font_size;
4030
4031 let mut theme = settings.theme.editor.clone();
4032 theme.text = TextStyle {
4033 color: theme.text.color,
4034 font_family_name,
4035 font_family_id,
4036 font_id,
4037 font_size,
4038 font_properties,
4039 underline: None,
4040 };
4041 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4042 let soft_wrap = match settings.soft_wrap(language) {
4043 workspace::settings::SoftWrap::None => SoftWrap::None,
4044 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4045 workspace::settings::SoftWrap::PreferredLineLength => {
4046 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4047 }
4048 };
4049
4050 EditorSettings {
4051 tab_size: settings.tab_size,
4052 soft_wrap,
4053 style: theme,
4054 }
4055 })
4056}
4057
4058#[cfg(test)]
4059mod tests {
4060 use super::*;
4061 use language::LanguageConfig;
4062 use std::{cell::RefCell, rc::Rc, time::Instant};
4063 use text::Point;
4064 use unindent::Unindent;
4065 use util::test::sample_text;
4066
4067 #[gpui::test]
4068 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4069 let mut now = Instant::now();
4070 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4071 let group_interval = buffer.read(cx).transaction_group_interval();
4072 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4073 let settings = EditorSettings::test(cx);
4074 let (_, editor) = cx.add_window(Default::default(), |cx| {
4075 build_editor(buffer.clone(), settings, cx)
4076 });
4077
4078 editor.update(cx, |editor, cx| {
4079 editor.start_transaction_at(now, cx);
4080 editor.select_ranges([2..4], None, cx);
4081 editor.insert("cd", cx);
4082 editor.end_transaction_at(now, cx);
4083 assert_eq!(editor.text(cx), "12cd56");
4084 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4085
4086 editor.start_transaction_at(now, cx);
4087 editor.select_ranges([4..5], None, cx);
4088 editor.insert("e", cx);
4089 editor.end_transaction_at(now, cx);
4090 assert_eq!(editor.text(cx), "12cde6");
4091 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4092
4093 now += group_interval + Duration::from_millis(1);
4094 editor.select_ranges([2..2], None, cx);
4095
4096 // Simulate an edit in another editor
4097 buffer.update(cx, |buffer, cx| {
4098 buffer.start_transaction_at(now, cx);
4099 buffer.edit([0..1], "a", cx);
4100 buffer.edit([1..1], "b", cx);
4101 buffer.end_transaction_at(now, cx);
4102 });
4103
4104 assert_eq!(editor.text(cx), "ab2cde6");
4105 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4106
4107 // Last transaction happened past the group interval in a different editor.
4108 // Undo it individually and don't restore selections.
4109 editor.undo(&Undo, cx);
4110 assert_eq!(editor.text(cx), "12cde6");
4111 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4112
4113 // First two transactions happened within the group interval in this editor.
4114 // Undo them together and restore selections.
4115 editor.undo(&Undo, cx);
4116 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4117 assert_eq!(editor.text(cx), "123456");
4118 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4119
4120 // Redo the first two transactions together.
4121 editor.redo(&Redo, cx);
4122 assert_eq!(editor.text(cx), "12cde6");
4123 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4124
4125 // Redo the last transaction on its own.
4126 editor.redo(&Redo, cx);
4127 assert_eq!(editor.text(cx), "ab2cde6");
4128 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4129
4130 // Test empty transactions.
4131 editor.start_transaction_at(now, cx);
4132 editor.end_transaction_at(now, cx);
4133 editor.undo(&Undo, cx);
4134 assert_eq!(editor.text(cx), "12cde6");
4135 });
4136 }
4137
4138 #[gpui::test]
4139 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4140 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4141 let settings = EditorSettings::test(cx);
4142 let (_, editor) =
4143 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4144
4145 editor.update(cx, |view, cx| {
4146 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4147 });
4148
4149 assert_eq!(
4150 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4151 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4152 );
4153
4154 editor.update(cx, |view, cx| {
4155 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4156 });
4157
4158 assert_eq!(
4159 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4160 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4161 );
4162
4163 editor.update(cx, |view, cx| {
4164 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4165 });
4166
4167 assert_eq!(
4168 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4169 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4170 );
4171
4172 editor.update(cx, |view, cx| {
4173 view.end_selection(cx);
4174 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4175 });
4176
4177 assert_eq!(
4178 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4179 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4180 );
4181
4182 editor.update(cx, |view, cx| {
4183 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4184 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4185 });
4186
4187 assert_eq!(
4188 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4189 [
4190 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4191 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4192 ]
4193 );
4194
4195 editor.update(cx, |view, cx| {
4196 view.end_selection(cx);
4197 });
4198
4199 assert_eq!(
4200 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4201 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4202 );
4203 }
4204
4205 #[gpui::test]
4206 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4207 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4208 let settings = EditorSettings::test(cx);
4209 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4210
4211 view.update(cx, |view, cx| {
4212 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4213 assert_eq!(
4214 view.selected_display_ranges(cx),
4215 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4216 );
4217 });
4218
4219 view.update(cx, |view, cx| {
4220 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4221 assert_eq!(
4222 view.selected_display_ranges(cx),
4223 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4224 );
4225 });
4226
4227 view.update(cx, |view, cx| {
4228 view.cancel(&Cancel, cx);
4229 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4230 assert_eq!(
4231 view.selected_display_ranges(cx),
4232 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4233 );
4234 });
4235 }
4236
4237 #[gpui::test]
4238 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4239 cx.add_window(Default::default(), |cx| {
4240 use workspace::ItemView;
4241 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4242 let settings = EditorSettings::test(&cx);
4243 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4244 let mut editor = build_editor(buffer.clone(), settings, cx);
4245 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4246
4247 // Move the cursor a small distance.
4248 // Nothing is added to the navigation history.
4249 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4250 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4251 assert!(nav_history.borrow_mut().pop_backward().is_none());
4252
4253 // Move the cursor a large distance.
4254 // The history can jump back to the previous position.
4255 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4256 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4257 editor.navigate(nav_entry.data.unwrap(), cx);
4258 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4259 assert_eq!(
4260 editor.selected_display_ranges(cx),
4261 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4262 );
4263
4264 // Move the cursor a small distance via the mouse.
4265 // Nothing is added to the navigation history.
4266 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4267 editor.end_selection(cx);
4268 assert_eq!(
4269 editor.selected_display_ranges(cx),
4270 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4271 );
4272 assert!(nav_history.borrow_mut().pop_backward().is_none());
4273
4274 // Move the cursor a large distance via the mouse.
4275 // The history can jump back to the previous position.
4276 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
4277 editor.end_selection(cx);
4278 assert_eq!(
4279 editor.selected_display_ranges(cx),
4280 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
4281 );
4282 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4283 editor.navigate(nav_entry.data.unwrap(), cx);
4284 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4285 assert_eq!(
4286 editor.selected_display_ranges(cx),
4287 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4288 );
4289
4290 editor
4291 });
4292 }
4293
4294 #[gpui::test]
4295 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4296 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4297 let settings = EditorSettings::test(cx);
4298 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4299
4300 view.update(cx, |view, cx| {
4301 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4302 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4303 view.end_selection(cx);
4304
4305 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4306 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4307 view.end_selection(cx);
4308 assert_eq!(
4309 view.selected_display_ranges(cx),
4310 [
4311 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4312 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4313 ]
4314 );
4315 });
4316
4317 view.update(cx, |view, cx| {
4318 view.cancel(&Cancel, cx);
4319 assert_eq!(
4320 view.selected_display_ranges(cx),
4321 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4322 );
4323 });
4324
4325 view.update(cx, |view, cx| {
4326 view.cancel(&Cancel, cx);
4327 assert_eq!(
4328 view.selected_display_ranges(cx),
4329 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4330 );
4331 });
4332 }
4333
4334 #[gpui::test]
4335 fn test_fold(cx: &mut gpui::MutableAppContext) {
4336 let buffer = MultiBuffer::build_simple(
4337 &"
4338 impl Foo {
4339 // Hello!
4340
4341 fn a() {
4342 1
4343 }
4344
4345 fn b() {
4346 2
4347 }
4348
4349 fn c() {
4350 3
4351 }
4352 }
4353 "
4354 .unindent(),
4355 cx,
4356 );
4357 let settings = EditorSettings::test(&cx);
4358 let (_, view) = cx.add_window(Default::default(), |cx| {
4359 build_editor(buffer.clone(), settings, cx)
4360 });
4361
4362 view.update(cx, |view, cx| {
4363 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
4364 view.fold(&Fold, cx);
4365 assert_eq!(
4366 view.display_text(cx),
4367 "
4368 impl Foo {
4369 // Hello!
4370
4371 fn a() {
4372 1
4373 }
4374
4375 fn b() {…
4376 }
4377
4378 fn c() {…
4379 }
4380 }
4381 "
4382 .unindent(),
4383 );
4384
4385 view.fold(&Fold, cx);
4386 assert_eq!(
4387 view.display_text(cx),
4388 "
4389 impl Foo {…
4390 }
4391 "
4392 .unindent(),
4393 );
4394
4395 view.unfold(&Unfold, cx);
4396 assert_eq!(
4397 view.display_text(cx),
4398 "
4399 impl Foo {
4400 // Hello!
4401
4402 fn a() {
4403 1
4404 }
4405
4406 fn b() {…
4407 }
4408
4409 fn c() {…
4410 }
4411 }
4412 "
4413 .unindent(),
4414 );
4415
4416 view.unfold(&Unfold, cx);
4417 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4418 });
4419 }
4420
4421 #[gpui::test]
4422 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4423 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4424 let settings = EditorSettings::test(&cx);
4425 let (_, view) = cx.add_window(Default::default(), |cx| {
4426 build_editor(buffer.clone(), settings, cx)
4427 });
4428
4429 buffer.update(cx, |buffer, cx| {
4430 buffer.edit(
4431 vec![
4432 Point::new(1, 0)..Point::new(1, 0),
4433 Point::new(1, 1)..Point::new(1, 1),
4434 ],
4435 "\t",
4436 cx,
4437 );
4438 });
4439
4440 view.update(cx, |view, cx| {
4441 assert_eq!(
4442 view.selected_display_ranges(cx),
4443 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4444 );
4445
4446 view.move_down(&MoveDown, cx);
4447 assert_eq!(
4448 view.selected_display_ranges(cx),
4449 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4450 );
4451
4452 view.move_right(&MoveRight, cx);
4453 assert_eq!(
4454 view.selected_display_ranges(cx),
4455 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4456 );
4457
4458 view.move_left(&MoveLeft, cx);
4459 assert_eq!(
4460 view.selected_display_ranges(cx),
4461 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4462 );
4463
4464 view.move_up(&MoveUp, cx);
4465 assert_eq!(
4466 view.selected_display_ranges(cx),
4467 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4468 );
4469
4470 view.move_to_end(&MoveToEnd, cx);
4471 assert_eq!(
4472 view.selected_display_ranges(cx),
4473 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4474 );
4475
4476 view.move_to_beginning(&MoveToBeginning, cx);
4477 assert_eq!(
4478 view.selected_display_ranges(cx),
4479 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4480 );
4481
4482 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
4483 view.select_to_beginning(&SelectToBeginning, cx);
4484 assert_eq!(
4485 view.selected_display_ranges(cx),
4486 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4487 );
4488
4489 view.select_to_end(&SelectToEnd, cx);
4490 assert_eq!(
4491 view.selected_display_ranges(cx),
4492 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4493 );
4494 });
4495 }
4496
4497 #[gpui::test]
4498 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4499 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4500 let settings = EditorSettings::test(&cx);
4501 let (_, view) = cx.add_window(Default::default(), |cx| {
4502 build_editor(buffer.clone(), settings, cx)
4503 });
4504
4505 assert_eq!('ⓐ'.len_utf8(), 3);
4506 assert_eq!('α'.len_utf8(), 2);
4507
4508 view.update(cx, |view, cx| {
4509 view.fold_ranges(
4510 vec![
4511 Point::new(0, 6)..Point::new(0, 12),
4512 Point::new(1, 2)..Point::new(1, 4),
4513 Point::new(2, 4)..Point::new(2, 8),
4514 ],
4515 cx,
4516 );
4517 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4518
4519 view.move_right(&MoveRight, cx);
4520 assert_eq!(
4521 view.selected_display_ranges(cx),
4522 &[empty_range(0, "ⓐ".len())]
4523 );
4524 view.move_right(&MoveRight, cx);
4525 assert_eq!(
4526 view.selected_display_ranges(cx),
4527 &[empty_range(0, "ⓐⓑ".len())]
4528 );
4529 view.move_right(&MoveRight, cx);
4530 assert_eq!(
4531 view.selected_display_ranges(cx),
4532 &[empty_range(0, "ⓐⓑ…".len())]
4533 );
4534
4535 view.move_down(&MoveDown, cx);
4536 assert_eq!(
4537 view.selected_display_ranges(cx),
4538 &[empty_range(1, "ab…".len())]
4539 );
4540 view.move_left(&MoveLeft, cx);
4541 assert_eq!(
4542 view.selected_display_ranges(cx),
4543 &[empty_range(1, "ab".len())]
4544 );
4545 view.move_left(&MoveLeft, cx);
4546 assert_eq!(
4547 view.selected_display_ranges(cx),
4548 &[empty_range(1, "a".len())]
4549 );
4550
4551 view.move_down(&MoveDown, cx);
4552 assert_eq!(
4553 view.selected_display_ranges(cx),
4554 &[empty_range(2, "α".len())]
4555 );
4556 view.move_right(&MoveRight, cx);
4557 assert_eq!(
4558 view.selected_display_ranges(cx),
4559 &[empty_range(2, "αβ".len())]
4560 );
4561 view.move_right(&MoveRight, cx);
4562 assert_eq!(
4563 view.selected_display_ranges(cx),
4564 &[empty_range(2, "αβ…".len())]
4565 );
4566 view.move_right(&MoveRight, cx);
4567 assert_eq!(
4568 view.selected_display_ranges(cx),
4569 &[empty_range(2, "αβ…ε".len())]
4570 );
4571
4572 view.move_up(&MoveUp, cx);
4573 assert_eq!(
4574 view.selected_display_ranges(cx),
4575 &[empty_range(1, "ab…e".len())]
4576 );
4577 view.move_up(&MoveUp, cx);
4578 assert_eq!(
4579 view.selected_display_ranges(cx),
4580 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4581 );
4582 view.move_left(&MoveLeft, cx);
4583 assert_eq!(
4584 view.selected_display_ranges(cx),
4585 &[empty_range(0, "ⓐⓑ…".len())]
4586 );
4587 view.move_left(&MoveLeft, cx);
4588 assert_eq!(
4589 view.selected_display_ranges(cx),
4590 &[empty_range(0, "ⓐⓑ".len())]
4591 );
4592 view.move_left(&MoveLeft, cx);
4593 assert_eq!(
4594 view.selected_display_ranges(cx),
4595 &[empty_range(0, "ⓐ".len())]
4596 );
4597 });
4598 }
4599
4600 #[gpui::test]
4601 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4602 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4603 let settings = EditorSettings::test(&cx);
4604 let (_, view) = cx.add_window(Default::default(), |cx| {
4605 build_editor(buffer.clone(), settings, cx)
4606 });
4607 view.update(cx, |view, cx| {
4608 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
4609 view.move_down(&MoveDown, cx);
4610 assert_eq!(
4611 view.selected_display_ranges(cx),
4612 &[empty_range(1, "abcd".len())]
4613 );
4614
4615 view.move_down(&MoveDown, cx);
4616 assert_eq!(
4617 view.selected_display_ranges(cx),
4618 &[empty_range(2, "αβγ".len())]
4619 );
4620
4621 view.move_down(&MoveDown, cx);
4622 assert_eq!(
4623 view.selected_display_ranges(cx),
4624 &[empty_range(3, "abcd".len())]
4625 );
4626
4627 view.move_down(&MoveDown, cx);
4628 assert_eq!(
4629 view.selected_display_ranges(cx),
4630 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4631 );
4632
4633 view.move_up(&MoveUp, cx);
4634 assert_eq!(
4635 view.selected_display_ranges(cx),
4636 &[empty_range(3, "abcd".len())]
4637 );
4638
4639 view.move_up(&MoveUp, cx);
4640 assert_eq!(
4641 view.selected_display_ranges(cx),
4642 &[empty_range(2, "αβγ".len())]
4643 );
4644 });
4645 }
4646
4647 #[gpui::test]
4648 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4649 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4650 let settings = EditorSettings::test(&cx);
4651 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4652 view.update(cx, |view, cx| {
4653 view.select_display_ranges(
4654 &[
4655 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4656 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4657 ],
4658 cx,
4659 );
4660 });
4661
4662 view.update(cx, |view, cx| {
4663 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4664 assert_eq!(
4665 view.selected_display_ranges(cx),
4666 &[
4667 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4668 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4669 ]
4670 );
4671 });
4672
4673 view.update(cx, |view, cx| {
4674 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4675 assert_eq!(
4676 view.selected_display_ranges(cx),
4677 &[
4678 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4679 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4680 ]
4681 );
4682 });
4683
4684 view.update(cx, |view, cx| {
4685 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4686 assert_eq!(
4687 view.selected_display_ranges(cx),
4688 &[
4689 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4690 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4691 ]
4692 );
4693 });
4694
4695 view.update(cx, |view, cx| {
4696 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4697 assert_eq!(
4698 view.selected_display_ranges(cx),
4699 &[
4700 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4701 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4702 ]
4703 );
4704 });
4705
4706 // Moving to the end of line again is a no-op.
4707 view.update(cx, |view, cx| {
4708 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4709 assert_eq!(
4710 view.selected_display_ranges(cx),
4711 &[
4712 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4713 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4714 ]
4715 );
4716 });
4717
4718 view.update(cx, |view, cx| {
4719 view.move_left(&MoveLeft, cx);
4720 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4721 assert_eq!(
4722 view.selected_display_ranges(cx),
4723 &[
4724 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4725 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4726 ]
4727 );
4728 });
4729
4730 view.update(cx, |view, cx| {
4731 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4732 assert_eq!(
4733 view.selected_display_ranges(cx),
4734 &[
4735 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4736 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4737 ]
4738 );
4739 });
4740
4741 view.update(cx, |view, cx| {
4742 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4743 assert_eq!(
4744 view.selected_display_ranges(cx),
4745 &[
4746 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4747 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4748 ]
4749 );
4750 });
4751
4752 view.update(cx, |view, cx| {
4753 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4754 assert_eq!(
4755 view.selected_display_ranges(cx),
4756 &[
4757 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4758 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4759 ]
4760 );
4761 });
4762
4763 view.update(cx, |view, cx| {
4764 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4765 assert_eq!(view.display_text(cx), "ab\n de");
4766 assert_eq!(
4767 view.selected_display_ranges(cx),
4768 &[
4769 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4770 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4771 ]
4772 );
4773 });
4774
4775 view.update(cx, |view, cx| {
4776 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4777 assert_eq!(view.display_text(cx), "\n");
4778 assert_eq!(
4779 view.selected_display_ranges(cx),
4780 &[
4781 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4782 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4783 ]
4784 );
4785 });
4786 }
4787
4788 #[gpui::test]
4789 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4790 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4791 let settings = EditorSettings::test(&cx);
4792 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4793 view.update(cx, |view, cx| {
4794 view.select_display_ranges(
4795 &[
4796 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4797 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4798 ],
4799 cx,
4800 );
4801 });
4802
4803 view.update(cx, |view, cx| {
4804 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4805 assert_eq!(
4806 view.selected_display_ranges(cx),
4807 &[
4808 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4809 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4810 ]
4811 );
4812 });
4813
4814 view.update(cx, |view, cx| {
4815 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4816 assert_eq!(
4817 view.selected_display_ranges(cx),
4818 &[
4819 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4820 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4821 ]
4822 );
4823 });
4824
4825 view.update(cx, |view, cx| {
4826 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4827 assert_eq!(
4828 view.selected_display_ranges(cx),
4829 &[
4830 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4831 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4832 ]
4833 );
4834 });
4835
4836 view.update(cx, |view, cx| {
4837 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4838 assert_eq!(
4839 view.selected_display_ranges(cx),
4840 &[
4841 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4842 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4843 ]
4844 );
4845 });
4846
4847 view.update(cx, |view, cx| {
4848 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4849 assert_eq!(
4850 view.selected_display_ranges(cx),
4851 &[
4852 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4853 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4854 ]
4855 );
4856 });
4857
4858 view.update(cx, |view, cx| {
4859 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4860 assert_eq!(
4861 view.selected_display_ranges(cx),
4862 &[
4863 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4864 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4865 ]
4866 );
4867 });
4868
4869 view.update(cx, |view, cx| {
4870 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4871 assert_eq!(
4872 view.selected_display_ranges(cx),
4873 &[
4874 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4875 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4876 ]
4877 );
4878 });
4879
4880 view.update(cx, |view, cx| {
4881 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4882 assert_eq!(
4883 view.selected_display_ranges(cx),
4884 &[
4885 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4886 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4887 ]
4888 );
4889 });
4890
4891 view.update(cx, |view, cx| {
4892 view.move_right(&MoveRight, cx);
4893 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4894 assert_eq!(
4895 view.selected_display_ranges(cx),
4896 &[
4897 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4898 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4899 ]
4900 );
4901 });
4902
4903 view.update(cx, |view, cx| {
4904 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4905 assert_eq!(
4906 view.selected_display_ranges(cx),
4907 &[
4908 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4909 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4910 ]
4911 );
4912 });
4913
4914 view.update(cx, |view, cx| {
4915 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4916 assert_eq!(
4917 view.selected_display_ranges(cx),
4918 &[
4919 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4920 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4921 ]
4922 );
4923 });
4924 }
4925
4926 #[gpui::test]
4927 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4928 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4929 let settings = EditorSettings::test(&cx);
4930 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4931
4932 view.update(cx, |view, cx| {
4933 view.set_wrap_width(Some(140.), cx);
4934 assert_eq!(
4935 view.display_text(cx),
4936 "use one::{\n two::three::\n four::five\n};"
4937 );
4938
4939 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
4940
4941 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4942 assert_eq!(
4943 view.selected_display_ranges(cx),
4944 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4945 );
4946
4947 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4948 assert_eq!(
4949 view.selected_display_ranges(cx),
4950 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4951 );
4952
4953 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4954 assert_eq!(
4955 view.selected_display_ranges(cx),
4956 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4957 );
4958
4959 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4960 assert_eq!(
4961 view.selected_display_ranges(cx),
4962 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4963 );
4964
4965 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4966 assert_eq!(
4967 view.selected_display_ranges(cx),
4968 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4969 );
4970
4971 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4972 assert_eq!(
4973 view.selected_display_ranges(cx),
4974 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4975 );
4976 });
4977 }
4978
4979 #[gpui::test]
4980 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4981 let buffer = MultiBuffer::build_simple("one two three four", cx);
4982 let settings = EditorSettings::test(&cx);
4983 let (_, view) = cx.add_window(Default::default(), |cx| {
4984 build_editor(buffer.clone(), settings, cx)
4985 });
4986
4987 view.update(cx, |view, cx| {
4988 view.select_display_ranges(
4989 &[
4990 // an empty selection - the preceding word fragment is deleted
4991 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4992 // characters selected - they are deleted
4993 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4994 ],
4995 cx,
4996 );
4997 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4998 });
4999
5000 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5001
5002 view.update(cx, |view, cx| {
5003 view.select_display_ranges(
5004 &[
5005 // an empty selection - the following word fragment is deleted
5006 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5007 // characters selected - they are deleted
5008 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5009 ],
5010 cx,
5011 );
5012 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5013 });
5014
5015 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5016 }
5017
5018 #[gpui::test]
5019 fn test_newline(cx: &mut gpui::MutableAppContext) {
5020 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5021 let settings = EditorSettings::test(&cx);
5022 let (_, view) = cx.add_window(Default::default(), |cx| {
5023 build_editor(buffer.clone(), settings, cx)
5024 });
5025
5026 view.update(cx, |view, cx| {
5027 view.select_display_ranges(
5028 &[
5029 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5030 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5031 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5032 ],
5033 cx,
5034 );
5035
5036 view.newline(&Newline, cx);
5037 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5038 });
5039 }
5040
5041 #[gpui::test]
5042 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5043 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5044 let settings = EditorSettings::test(&cx);
5045 let (_, view) = cx.add_window(Default::default(), |cx| {
5046 build_editor(buffer.clone(), settings, cx)
5047 });
5048
5049 view.update(cx, |view, cx| {
5050 // two selections on the same line
5051 view.select_display_ranges(
5052 &[
5053 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5054 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5055 ],
5056 cx,
5057 );
5058
5059 // indent from mid-tabstop to full tabstop
5060 view.tab(&Tab, cx);
5061 assert_eq!(view.text(cx), " one two\nthree\n four");
5062 assert_eq!(
5063 view.selected_display_ranges(cx),
5064 &[
5065 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5066 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5067 ]
5068 );
5069
5070 // outdent from 1 tabstop to 0 tabstops
5071 view.outdent(&Outdent, cx);
5072 assert_eq!(view.text(cx), "one two\nthree\n four");
5073 assert_eq!(
5074 view.selected_display_ranges(cx),
5075 &[
5076 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5077 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5078 ]
5079 );
5080
5081 // select across line ending
5082 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5083
5084 // indent and outdent affect only the preceding line
5085 view.tab(&Tab, cx);
5086 assert_eq!(view.text(cx), "one two\n three\n four");
5087 assert_eq!(
5088 view.selected_display_ranges(cx),
5089 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5090 );
5091 view.outdent(&Outdent, cx);
5092 assert_eq!(view.text(cx), "one two\nthree\n four");
5093 assert_eq!(
5094 view.selected_display_ranges(cx),
5095 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5096 );
5097
5098 // Ensure that indenting/outdenting works when the cursor is at column 0.
5099 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5100 view.tab(&Tab, cx);
5101 assert_eq!(view.text(cx), "one two\n three\n four");
5102 assert_eq!(
5103 view.selected_display_ranges(cx),
5104 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5105 );
5106
5107 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5108 view.outdent(&Outdent, cx);
5109 assert_eq!(view.text(cx), "one two\nthree\n four");
5110 assert_eq!(
5111 view.selected_display_ranges(cx),
5112 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5113 );
5114 });
5115 }
5116
5117 #[gpui::test]
5118 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5119 let buffer =
5120 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5121 let settings = EditorSettings::test(&cx);
5122 let (_, view) = cx.add_window(Default::default(), |cx| {
5123 build_editor(buffer.clone(), settings, cx)
5124 });
5125
5126 view.update(cx, |view, cx| {
5127 view.select_display_ranges(
5128 &[
5129 // an empty selection - the preceding character is deleted
5130 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5131 // one character selected - it is deleted
5132 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5133 // a line suffix selected - it is deleted
5134 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5135 ],
5136 cx,
5137 );
5138 view.backspace(&Backspace, cx);
5139 });
5140
5141 assert_eq!(
5142 buffer.read(cx).read(cx).text(),
5143 "oe two three\nfou five six\nseven ten\n"
5144 );
5145 }
5146
5147 #[gpui::test]
5148 fn test_delete(cx: &mut gpui::MutableAppContext) {
5149 let buffer =
5150 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5151 let settings = EditorSettings::test(&cx);
5152 let (_, view) = cx.add_window(Default::default(), |cx| {
5153 build_editor(buffer.clone(), settings, cx)
5154 });
5155
5156 view.update(cx, |view, cx| {
5157 view.select_display_ranges(
5158 &[
5159 // an empty selection - the following character is deleted
5160 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5161 // one character selected - it is deleted
5162 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5163 // a line suffix selected - it is deleted
5164 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5165 ],
5166 cx,
5167 );
5168 view.delete(&Delete, cx);
5169 });
5170
5171 assert_eq!(
5172 buffer.read(cx).read(cx).text(),
5173 "on two three\nfou five six\nseven ten\n"
5174 );
5175 }
5176
5177 #[gpui::test]
5178 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5179 let settings = EditorSettings::test(&cx);
5180 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5181 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5182 view.update(cx, |view, cx| {
5183 view.select_display_ranges(
5184 &[
5185 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5186 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5187 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5188 ],
5189 cx,
5190 );
5191 view.delete_line(&DeleteLine, cx);
5192 assert_eq!(view.display_text(cx), "ghi");
5193 assert_eq!(
5194 view.selected_display_ranges(cx),
5195 vec![
5196 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5197 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5198 ]
5199 );
5200 });
5201
5202 let settings = EditorSettings::test(&cx);
5203 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5204 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5205 view.update(cx, |view, cx| {
5206 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5207 view.delete_line(&DeleteLine, cx);
5208 assert_eq!(view.display_text(cx), "ghi\n");
5209 assert_eq!(
5210 view.selected_display_ranges(cx),
5211 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5212 );
5213 });
5214 }
5215
5216 #[gpui::test]
5217 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5218 let settings = EditorSettings::test(&cx);
5219 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5220 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5221 view.update(cx, |view, cx| {
5222 view.select_display_ranges(
5223 &[
5224 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5225 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5226 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5227 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5228 ],
5229 cx,
5230 );
5231 view.duplicate_line(&DuplicateLine, cx);
5232 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5233 assert_eq!(
5234 view.selected_display_ranges(cx),
5235 vec![
5236 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5237 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5238 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5239 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5240 ]
5241 );
5242 });
5243
5244 let settings = EditorSettings::test(&cx);
5245 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5246 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5247 view.update(cx, |view, cx| {
5248 view.select_display_ranges(
5249 &[
5250 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5251 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5252 ],
5253 cx,
5254 );
5255 view.duplicate_line(&DuplicateLine, cx);
5256 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5257 assert_eq!(
5258 view.selected_display_ranges(cx),
5259 vec![
5260 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5261 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5262 ]
5263 );
5264 });
5265 }
5266
5267 #[gpui::test]
5268 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5269 let settings = EditorSettings::test(&cx);
5270 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5271 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5272 view.update(cx, |view, cx| {
5273 view.fold_ranges(
5274 vec![
5275 Point::new(0, 2)..Point::new(1, 2),
5276 Point::new(2, 3)..Point::new(4, 1),
5277 Point::new(7, 0)..Point::new(8, 4),
5278 ],
5279 cx,
5280 );
5281 view.select_display_ranges(
5282 &[
5283 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5284 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5285 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5286 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5287 ],
5288 cx,
5289 );
5290 assert_eq!(
5291 view.display_text(cx),
5292 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5293 );
5294
5295 view.move_line_up(&MoveLineUp, cx);
5296 assert_eq!(
5297 view.display_text(cx),
5298 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5299 );
5300 assert_eq!(
5301 view.selected_display_ranges(cx),
5302 vec![
5303 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5304 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5305 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5306 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5307 ]
5308 );
5309 });
5310
5311 view.update(cx, |view, cx| {
5312 view.move_line_down(&MoveLineDown, cx);
5313 assert_eq!(
5314 view.display_text(cx),
5315 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5316 );
5317 assert_eq!(
5318 view.selected_display_ranges(cx),
5319 vec![
5320 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5321 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5322 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5323 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5324 ]
5325 );
5326 });
5327
5328 view.update(cx, |view, cx| {
5329 view.move_line_down(&MoveLineDown, cx);
5330 assert_eq!(
5331 view.display_text(cx),
5332 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5333 );
5334 assert_eq!(
5335 view.selected_display_ranges(cx),
5336 vec![
5337 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5338 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5339 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5340 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5341 ]
5342 );
5343 });
5344
5345 view.update(cx, |view, cx| {
5346 view.move_line_up(&MoveLineUp, cx);
5347 assert_eq!(
5348 view.display_text(cx),
5349 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5350 );
5351 assert_eq!(
5352 view.selected_display_ranges(cx),
5353 vec![
5354 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5355 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5356 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5357 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5358 ]
5359 );
5360 });
5361 }
5362
5363 #[gpui::test]
5364 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5365 let settings = EditorSettings::test(&cx);
5366 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5367 let snapshot = buffer.read(cx).snapshot(cx);
5368 let (_, editor) =
5369 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5370 editor.update(cx, |editor, cx| {
5371 editor.insert_blocks(
5372 [BlockProperties {
5373 position: snapshot.anchor_after(Point::new(2, 0)),
5374 disposition: BlockDisposition::Below,
5375 height: 1,
5376 render: Arc::new(|_| Empty::new().boxed()),
5377 }],
5378 cx,
5379 );
5380 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5381 editor.move_line_down(&MoveLineDown, cx);
5382 });
5383 }
5384
5385 #[gpui::test]
5386 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5387 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5388 let settings = EditorSettings::test(&cx);
5389 let view = cx
5390 .add_window(Default::default(), |cx| {
5391 build_editor(buffer.clone(), settings, cx)
5392 })
5393 .1;
5394
5395 // Cut with three selections. Clipboard text is divided into three slices.
5396 view.update(cx, |view, cx| {
5397 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5398 view.cut(&Cut, cx);
5399 assert_eq!(view.display_text(cx), "two four six ");
5400 });
5401
5402 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5403 view.update(cx, |view, cx| {
5404 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5405 view.paste(&Paste, cx);
5406 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5407 assert_eq!(
5408 view.selected_display_ranges(cx),
5409 &[
5410 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5411 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5412 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5413 ]
5414 );
5415 });
5416
5417 // Paste again but with only two cursors. Since the number of cursors doesn't
5418 // match the number of slices in the clipboard, the entire clipboard text
5419 // is pasted at each cursor.
5420 view.update(cx, |view, cx| {
5421 view.select_ranges(vec![0..0, 31..31], None, cx);
5422 view.handle_input(&Input("( ".into()), cx);
5423 view.paste(&Paste, cx);
5424 view.handle_input(&Input(") ".into()), cx);
5425 assert_eq!(
5426 view.display_text(cx),
5427 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5428 );
5429 });
5430
5431 view.update(cx, |view, cx| {
5432 view.select_ranges(vec![0..0], None, cx);
5433 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5434 assert_eq!(
5435 view.display_text(cx),
5436 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5437 );
5438 });
5439
5440 // Cut with three selections, one of which is full-line.
5441 view.update(cx, |view, cx| {
5442 view.select_display_ranges(
5443 &[
5444 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5445 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5446 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5447 ],
5448 cx,
5449 );
5450 view.cut(&Cut, cx);
5451 assert_eq!(
5452 view.display_text(cx),
5453 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5454 );
5455 });
5456
5457 // Paste with three selections, noticing how the copied selection that was full-line
5458 // gets inserted before the second cursor.
5459 view.update(cx, |view, cx| {
5460 view.select_display_ranges(
5461 &[
5462 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5463 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5464 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5465 ],
5466 cx,
5467 );
5468 view.paste(&Paste, cx);
5469 assert_eq!(
5470 view.display_text(cx),
5471 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5472 );
5473 assert_eq!(
5474 view.selected_display_ranges(cx),
5475 &[
5476 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5477 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5478 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5479 ]
5480 );
5481 });
5482
5483 // Copy with a single cursor only, which writes the whole line into the clipboard.
5484 view.update(cx, |view, cx| {
5485 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
5486 view.copy(&Copy, cx);
5487 });
5488
5489 // Paste with three selections, noticing how the copied full-line selection is inserted
5490 // before the empty selections but replaces the selection that is non-empty.
5491 view.update(cx, |view, cx| {
5492 view.select_display_ranges(
5493 &[
5494 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5495 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5496 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5497 ],
5498 cx,
5499 );
5500 view.paste(&Paste, cx);
5501 assert_eq!(
5502 view.display_text(cx),
5503 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5504 );
5505 assert_eq!(
5506 view.selected_display_ranges(cx),
5507 &[
5508 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5509 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5510 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5511 ]
5512 );
5513 });
5514 }
5515
5516 #[gpui::test]
5517 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5518 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5519 let settings = EditorSettings::test(&cx);
5520 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5521 view.update(cx, |view, cx| {
5522 view.select_all(&SelectAll, cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5526 );
5527 });
5528 }
5529
5530 #[gpui::test]
5531 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5532 let settings = EditorSettings::test(&cx);
5533 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5534 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5535 view.update(cx, |view, cx| {
5536 view.select_display_ranges(
5537 &[
5538 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5539 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5540 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5541 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5542 ],
5543 cx,
5544 );
5545 view.select_line(&SelectLine, cx);
5546 assert_eq!(
5547 view.selected_display_ranges(cx),
5548 vec![
5549 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5550 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5551 ]
5552 );
5553 });
5554
5555 view.update(cx, |view, cx| {
5556 view.select_line(&SelectLine, cx);
5557 assert_eq!(
5558 view.selected_display_ranges(cx),
5559 vec![
5560 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5561 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5562 ]
5563 );
5564 });
5565
5566 view.update(cx, |view, cx| {
5567 view.select_line(&SelectLine, cx);
5568 assert_eq!(
5569 view.selected_display_ranges(cx),
5570 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5571 );
5572 });
5573 }
5574
5575 #[gpui::test]
5576 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5577 let settings = EditorSettings::test(&cx);
5578 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5579 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5580 view.update(cx, |view, cx| {
5581 view.fold_ranges(
5582 vec![
5583 Point::new(0, 2)..Point::new(1, 2),
5584 Point::new(2, 3)..Point::new(4, 1),
5585 Point::new(7, 0)..Point::new(8, 4),
5586 ],
5587 cx,
5588 );
5589 view.select_display_ranges(
5590 &[
5591 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5592 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5593 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5594 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5595 ],
5596 cx,
5597 );
5598 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5599 });
5600
5601 view.update(cx, |view, cx| {
5602 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5603 assert_eq!(
5604 view.display_text(cx),
5605 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5606 );
5607 assert_eq!(
5608 view.selected_display_ranges(cx),
5609 [
5610 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5611 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5612 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5613 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5614 ]
5615 );
5616 });
5617
5618 view.update(cx, |view, cx| {
5619 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
5620 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5621 assert_eq!(
5622 view.display_text(cx),
5623 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5624 );
5625 assert_eq!(
5626 view.selected_display_ranges(cx),
5627 [
5628 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5629 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5630 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5631 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5632 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5633 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5634 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5635 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5636 ]
5637 );
5638 });
5639 }
5640
5641 #[gpui::test]
5642 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5643 let settings = EditorSettings::test(&cx);
5644 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5645 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5646
5647 view.update(cx, |view, cx| {
5648 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
5649 });
5650 view.update(cx, |view, cx| {
5651 view.add_selection_above(&AddSelectionAbove, cx);
5652 assert_eq!(
5653 view.selected_display_ranges(cx),
5654 vec![
5655 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5656 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5657 ]
5658 );
5659 });
5660
5661 view.update(cx, |view, cx| {
5662 view.add_selection_above(&AddSelectionAbove, cx);
5663 assert_eq!(
5664 view.selected_display_ranges(cx),
5665 vec![
5666 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5667 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5668 ]
5669 );
5670 });
5671
5672 view.update(cx, |view, cx| {
5673 view.add_selection_below(&AddSelectionBelow, cx);
5674 assert_eq!(
5675 view.selected_display_ranges(cx),
5676 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5677 );
5678 });
5679
5680 view.update(cx, |view, cx| {
5681 view.add_selection_below(&AddSelectionBelow, cx);
5682 assert_eq!(
5683 view.selected_display_ranges(cx),
5684 vec![
5685 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5686 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5687 ]
5688 );
5689 });
5690
5691 view.update(cx, |view, cx| {
5692 view.add_selection_below(&AddSelectionBelow, cx);
5693 assert_eq!(
5694 view.selected_display_ranges(cx),
5695 vec![
5696 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5697 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5698 ]
5699 );
5700 });
5701
5702 view.update(cx, |view, cx| {
5703 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
5704 });
5705 view.update(cx, |view, cx| {
5706 view.add_selection_below(&AddSelectionBelow, cx);
5707 assert_eq!(
5708 view.selected_display_ranges(cx),
5709 vec![
5710 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5711 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5712 ]
5713 );
5714 });
5715
5716 view.update(cx, |view, cx| {
5717 view.add_selection_below(&AddSelectionBelow, cx);
5718 assert_eq!(
5719 view.selected_display_ranges(cx),
5720 vec![
5721 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5722 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5723 ]
5724 );
5725 });
5726
5727 view.update(cx, |view, cx| {
5728 view.add_selection_above(&AddSelectionAbove, cx);
5729 assert_eq!(
5730 view.selected_display_ranges(cx),
5731 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5732 );
5733 });
5734
5735 view.update(cx, |view, cx| {
5736 view.add_selection_above(&AddSelectionAbove, cx);
5737 assert_eq!(
5738 view.selected_display_ranges(cx),
5739 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5740 );
5741 });
5742
5743 view.update(cx, |view, cx| {
5744 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
5745 view.add_selection_below(&AddSelectionBelow, cx);
5746 assert_eq!(
5747 view.selected_display_ranges(cx),
5748 vec![
5749 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5750 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5751 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5752 ]
5753 );
5754 });
5755
5756 view.update(cx, |view, cx| {
5757 view.add_selection_below(&AddSelectionBelow, cx);
5758 assert_eq!(
5759 view.selected_display_ranges(cx),
5760 vec![
5761 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5762 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5763 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5764 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5765 ]
5766 );
5767 });
5768
5769 view.update(cx, |view, cx| {
5770 view.add_selection_above(&AddSelectionAbove, cx);
5771 assert_eq!(
5772 view.selected_display_ranges(cx),
5773 vec![
5774 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5775 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5776 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5777 ]
5778 );
5779 });
5780
5781 view.update(cx, |view, cx| {
5782 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
5783 });
5784 view.update(cx, |view, cx| {
5785 view.add_selection_above(&AddSelectionAbove, cx);
5786 assert_eq!(
5787 view.selected_display_ranges(cx),
5788 vec![
5789 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5790 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5791 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5792 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5793 ]
5794 );
5795 });
5796
5797 view.update(cx, |view, cx| {
5798 view.add_selection_below(&AddSelectionBelow, cx);
5799 assert_eq!(
5800 view.selected_display_ranges(cx),
5801 vec![
5802 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5803 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5804 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5805 ]
5806 );
5807 });
5808 }
5809
5810 #[gpui::test]
5811 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5812 let settings = cx.read(EditorSettings::test);
5813 let language = Arc::new(Language::new(
5814 LanguageConfig::default(),
5815 Some(tree_sitter_rust::language()),
5816 ));
5817
5818 let text = r#"
5819 use mod1::mod2::{mod3, mod4};
5820
5821 fn fn_1(param1: bool, param2: &str) {
5822 let var1 = "text";
5823 }
5824 "#
5825 .unindent();
5826
5827 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
5828 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5829 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5830 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5831 .await;
5832
5833 view.update(&mut cx, |view, cx| {
5834 view.select_display_ranges(
5835 &[
5836 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5837 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5838 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5839 ],
5840 cx,
5841 );
5842 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5843 });
5844 assert_eq!(
5845 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5846 &[
5847 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5848 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5849 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5850 ]
5851 );
5852
5853 view.update(&mut cx, |view, cx| {
5854 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5855 });
5856 assert_eq!(
5857 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5858 &[
5859 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5860 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5861 ]
5862 );
5863
5864 view.update(&mut cx, |view, cx| {
5865 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5866 });
5867 assert_eq!(
5868 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5869 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5870 );
5871
5872 // Trying to expand the selected syntax node one more time has no effect.
5873 view.update(&mut cx, |view, cx| {
5874 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5875 });
5876 assert_eq!(
5877 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5878 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5879 );
5880
5881 view.update(&mut cx, |view, cx| {
5882 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5883 });
5884 assert_eq!(
5885 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5886 &[
5887 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5888 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5889 ]
5890 );
5891
5892 view.update(&mut cx, |view, cx| {
5893 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5894 });
5895 assert_eq!(
5896 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5897 &[
5898 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5899 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5900 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5901 ]
5902 );
5903
5904 view.update(&mut cx, |view, cx| {
5905 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5906 });
5907 assert_eq!(
5908 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5909 &[
5910 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5911 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5912 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5913 ]
5914 );
5915
5916 // Trying to shrink the selected syntax node one more time has no effect.
5917 view.update(&mut cx, |view, cx| {
5918 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5919 });
5920 assert_eq!(
5921 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5922 &[
5923 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5924 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5925 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5926 ]
5927 );
5928
5929 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5930 // a fold.
5931 view.update(&mut cx, |view, cx| {
5932 view.fold_ranges(
5933 vec![
5934 Point::new(0, 21)..Point::new(0, 24),
5935 Point::new(3, 20)..Point::new(3, 22),
5936 ],
5937 cx,
5938 );
5939 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5940 });
5941 assert_eq!(
5942 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5943 &[
5944 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5945 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5946 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5947 ]
5948 );
5949 }
5950
5951 #[gpui::test]
5952 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5953 let settings = cx.read(EditorSettings::test);
5954 let language = Arc::new(
5955 Language::new(
5956 LanguageConfig {
5957 brackets: vec![
5958 BracketPair {
5959 start: "{".to_string(),
5960 end: "}".to_string(),
5961 close: false,
5962 newline: true,
5963 },
5964 BracketPair {
5965 start: "(".to_string(),
5966 end: ")".to_string(),
5967 close: false,
5968 newline: true,
5969 },
5970 ],
5971 ..Default::default()
5972 },
5973 Some(tree_sitter_rust::language()),
5974 )
5975 .with_indents_query(
5976 r#"
5977 (_ "(" ")" @end) @indent
5978 (_ "{" "}" @end) @indent
5979 "#,
5980 )
5981 .unwrap(),
5982 );
5983
5984 let text = "fn a() {}";
5985
5986 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
5987 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5988 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5989 editor
5990 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5991 .await;
5992
5993 editor.update(&mut cx, |editor, cx| {
5994 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5995 editor.newline(&Newline, cx);
5996 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5997 assert_eq!(
5998 editor.selected_ranges(cx),
5999 &[
6000 Point::new(1, 4)..Point::new(1, 4),
6001 Point::new(3, 4)..Point::new(3, 4),
6002 Point::new(5, 0)..Point::new(5, 0)
6003 ]
6004 );
6005 });
6006 }
6007
6008 #[gpui::test]
6009 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6010 let settings = cx.read(EditorSettings::test);
6011 let language = Arc::new(Language::new(
6012 LanguageConfig {
6013 brackets: vec![
6014 BracketPair {
6015 start: "{".to_string(),
6016 end: "}".to_string(),
6017 close: true,
6018 newline: true,
6019 },
6020 BracketPair {
6021 start: "/*".to_string(),
6022 end: " */".to_string(),
6023 close: true,
6024 newline: true,
6025 },
6026 ],
6027 ..Default::default()
6028 },
6029 Some(tree_sitter_rust::language()),
6030 ));
6031
6032 let text = r#"
6033 a
6034
6035 /
6036
6037 "#
6038 .unindent();
6039
6040 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6041 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6042 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6043 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6044 .await;
6045
6046 view.update(&mut cx, |view, cx| {
6047 view.select_display_ranges(
6048 &[
6049 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6050 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6051 ],
6052 cx,
6053 );
6054 view.handle_input(&Input("{".to_string()), cx);
6055 view.handle_input(&Input("{".to_string()), cx);
6056 view.handle_input(&Input("{".to_string()), cx);
6057 assert_eq!(
6058 view.text(cx),
6059 "
6060 {{{}}}
6061 {{{}}}
6062 /
6063
6064 "
6065 .unindent()
6066 );
6067
6068 view.move_right(&MoveRight, cx);
6069 view.handle_input(&Input("}".to_string()), cx);
6070 view.handle_input(&Input("}".to_string()), cx);
6071 view.handle_input(&Input("}".to_string()), cx);
6072 assert_eq!(
6073 view.text(cx),
6074 "
6075 {{{}}}}
6076 {{{}}}}
6077 /
6078
6079 "
6080 .unindent()
6081 );
6082
6083 view.undo(&Undo, cx);
6084 view.handle_input(&Input("/".to_string()), cx);
6085 view.handle_input(&Input("*".to_string()), cx);
6086 assert_eq!(
6087 view.text(cx),
6088 "
6089 /* */
6090 /* */
6091 /
6092
6093 "
6094 .unindent()
6095 );
6096
6097 view.undo(&Undo, cx);
6098 view.select_display_ranges(
6099 &[
6100 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6101 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6102 ],
6103 cx,
6104 );
6105 view.handle_input(&Input("*".to_string()), cx);
6106 assert_eq!(
6107 view.text(cx),
6108 "
6109 a
6110
6111 /*
6112 *
6113 "
6114 .unindent()
6115 );
6116 });
6117 }
6118
6119 #[gpui::test]
6120 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6121 let settings = cx.read(EditorSettings::test);
6122 let language = Arc::new(Language::new(
6123 LanguageConfig {
6124 line_comment: Some("// ".to_string()),
6125 ..Default::default()
6126 },
6127 Some(tree_sitter_rust::language()),
6128 ));
6129
6130 let text = "
6131 fn a() {
6132 //b();
6133 // c();
6134 // d();
6135 }
6136 "
6137 .unindent();
6138
6139 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6140 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6141 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6142
6143 view.update(&mut cx, |editor, cx| {
6144 // If multiple selections intersect a line, the line is only
6145 // toggled once.
6146 editor.select_display_ranges(
6147 &[
6148 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6149 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6150 ],
6151 cx,
6152 );
6153 editor.toggle_comments(&ToggleComments, cx);
6154 assert_eq!(
6155 editor.text(cx),
6156 "
6157 fn a() {
6158 b();
6159 c();
6160 d();
6161 }
6162 "
6163 .unindent()
6164 );
6165
6166 // The comment prefix is inserted at the same column for every line
6167 // in a selection.
6168 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
6169 editor.toggle_comments(&ToggleComments, cx);
6170 assert_eq!(
6171 editor.text(cx),
6172 "
6173 fn a() {
6174 // b();
6175 // c();
6176 // d();
6177 }
6178 "
6179 .unindent()
6180 );
6181
6182 // If a selection ends at the beginning of a line, that line is not toggled.
6183 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
6184 editor.toggle_comments(&ToggleComments, cx);
6185 assert_eq!(
6186 editor.text(cx),
6187 "
6188 fn a() {
6189 // b();
6190 c();
6191 // d();
6192 }
6193 "
6194 .unindent()
6195 );
6196 });
6197 }
6198
6199 #[gpui::test]
6200 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6201 let settings = EditorSettings::test(cx);
6202 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6203 let multibuffer = cx.add_model(|cx| {
6204 let mut multibuffer = MultiBuffer::new(0);
6205 multibuffer.push_excerpt(
6206 ExcerptProperties {
6207 buffer: &buffer,
6208 range: Point::new(0, 0)..Point::new(0, 4),
6209 },
6210 cx,
6211 );
6212 multibuffer.push_excerpt(
6213 ExcerptProperties {
6214 buffer: &buffer,
6215 range: Point::new(1, 0)..Point::new(1, 4),
6216 },
6217 cx,
6218 );
6219 multibuffer
6220 });
6221
6222 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6223
6224 let (_, view) = cx.add_window(Default::default(), |cx| {
6225 build_editor(multibuffer, settings, cx)
6226 });
6227 view.update(cx, |view, cx| {
6228 view.select_display_ranges(
6229 &[
6230 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6231 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6232 ],
6233 cx,
6234 );
6235
6236 view.handle_input(&Input("X".to_string()), cx);
6237 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6238 assert_eq!(
6239 view.selected_display_ranges(cx),
6240 &[
6241 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6242 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6243 ]
6244 )
6245 });
6246 }
6247
6248 #[gpui::test]
6249 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6250 let settings = EditorSettings::test(cx);
6251 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6252 let multibuffer = cx.add_model(|cx| {
6253 let mut multibuffer = MultiBuffer::new(0);
6254 multibuffer.push_excerpt(
6255 ExcerptProperties {
6256 buffer: &buffer,
6257 range: Point::new(0, 0)..Point::new(1, 4),
6258 },
6259 cx,
6260 );
6261 multibuffer.push_excerpt(
6262 ExcerptProperties {
6263 buffer: &buffer,
6264 range: Point::new(1, 0)..Point::new(2, 4),
6265 },
6266 cx,
6267 );
6268 multibuffer
6269 });
6270
6271 assert_eq!(
6272 multibuffer.read(cx).read(cx).text(),
6273 "aaaa\nbbbb\nbbbb\ncccc"
6274 );
6275
6276 let (_, view) = cx.add_window(Default::default(), |cx| {
6277 build_editor(multibuffer, settings, cx)
6278 });
6279 view.update(cx, |view, cx| {
6280 view.select_display_ranges(
6281 &[
6282 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6283 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6284 ],
6285 cx,
6286 );
6287
6288 view.handle_input(&Input("X".to_string()), cx);
6289 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6290 assert_eq!(
6291 view.selected_display_ranges(cx),
6292 &[
6293 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6294 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6295 ]
6296 );
6297
6298 view.newline(&Newline, cx);
6299 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
6300 assert_eq!(
6301 view.selected_display_ranges(cx),
6302 &[
6303 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6304 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6305 ]
6306 );
6307 });
6308 }
6309
6310 #[gpui::test]
6311 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
6312 let settings = EditorSettings::test(cx);
6313 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6314 let mut excerpt1_id = None;
6315 let multibuffer = cx.add_model(|cx| {
6316 let mut multibuffer = MultiBuffer::new(0);
6317 excerpt1_id = Some(multibuffer.push_excerpt(
6318 ExcerptProperties {
6319 buffer: &buffer,
6320 range: Point::new(0, 0)..Point::new(1, 4),
6321 },
6322 cx,
6323 ));
6324 multibuffer.push_excerpt(
6325 ExcerptProperties {
6326 buffer: &buffer,
6327 range: Point::new(1, 0)..Point::new(2, 4),
6328 },
6329 cx,
6330 );
6331 multibuffer
6332 });
6333 assert_eq!(
6334 multibuffer.read(cx).read(cx).text(),
6335 "aaaa\nbbbb\nbbbb\ncccc"
6336 );
6337 let (_, editor) = cx.add_window(Default::default(), |cx| {
6338 let mut editor = build_editor(multibuffer.clone(), settings, cx);
6339 editor.select_display_ranges(
6340 &[
6341 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6342 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6343 ],
6344 cx,
6345 );
6346 editor
6347 });
6348
6349 // Refreshing selections is a no-op when excerpts haven't changed.
6350 editor.update(cx, |editor, cx| {
6351 editor.refresh_selections(cx);
6352 assert_eq!(
6353 editor.selected_display_ranges(cx),
6354 [
6355 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6356 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6357 ]
6358 );
6359 });
6360
6361 multibuffer.update(cx, |multibuffer, cx| {
6362 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
6363 });
6364 editor.update(cx, |editor, cx| {
6365 // Removing an excerpt causes the first selection to become degenerate.
6366 assert_eq!(
6367 editor.selected_display_ranges(cx),
6368 [
6369 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6370 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6371 ]
6372 );
6373
6374 // Refreshing selections will relocate the first selection to the original buffer
6375 // location.
6376 editor.refresh_selections(cx);
6377 assert_eq!(
6378 editor.selected_display_ranges(cx),
6379 [
6380 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6381 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
6382 ]
6383 );
6384 });
6385 }
6386
6387 #[gpui::test]
6388 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6389 let settings = cx.read(EditorSettings::test);
6390 let language = Arc::new(Language::new(
6391 LanguageConfig {
6392 brackets: vec![
6393 BracketPair {
6394 start: "{".to_string(),
6395 end: "}".to_string(),
6396 close: true,
6397 newline: true,
6398 },
6399 BracketPair {
6400 start: "/* ".to_string(),
6401 end: " */".to_string(),
6402 close: true,
6403 newline: true,
6404 },
6405 ],
6406 ..Default::default()
6407 },
6408 Some(tree_sitter_rust::language()),
6409 ));
6410
6411 let text = concat!(
6412 "{ }\n", // Suppress rustfmt
6413 " x\n", //
6414 " /* */\n", //
6415 "x\n", //
6416 "{{} }\n", //
6417 );
6418
6419 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6420 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6421 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6422 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6423 .await;
6424
6425 view.update(&mut cx, |view, cx| {
6426 view.select_display_ranges(
6427 &[
6428 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6429 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6430 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6431 ],
6432 cx,
6433 );
6434 view.newline(&Newline, cx);
6435
6436 assert_eq!(
6437 view.buffer().read(cx).read(cx).text(),
6438 concat!(
6439 "{ \n", // Suppress rustfmt
6440 "\n", //
6441 "}\n", //
6442 " x\n", //
6443 " /* \n", //
6444 " \n", //
6445 " */\n", //
6446 "x\n", //
6447 "{{} \n", //
6448 "}\n", //
6449 )
6450 );
6451 });
6452 }
6453
6454 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6455 let point = DisplayPoint::new(row as u32, column as u32);
6456 point..point
6457 }
6458
6459 fn build_editor(
6460 buffer: ModelHandle<MultiBuffer>,
6461 settings: EditorSettings,
6462 cx: &mut ViewContext<Editor>,
6463 ) -> Editor {
6464 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6465 }
6466}
6467
6468trait RangeExt<T> {
6469 fn sorted(&self) -> Range<T>;
6470 fn to_inclusive(&self) -> RangeInclusive<T>;
6471}
6472
6473impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6474 fn sorted(&self) -> Self {
6475 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6476 }
6477
6478 fn to_inclusive(&self) -> RangeInclusive<T> {
6479 self.start.clone()..=self.end.clone()
6480 }
6481}