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::{BTreeMap, HashMap, HashSet};
13pub use display_map::DisplayPoint;
14use display_map::*;
15pub use element::*;
16use gpui::{
17 action,
18 color::Color,
19 elements::*,
20 fonts::TextStyle,
21 geometry::vector::{vec2f, Vector2F},
22 keymap::Binding,
23 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
24 MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle,
25};
26use items::BufferItemHandle;
27use itertools::Itertools as _;
28use language::{
29 AnchorRangeExt as _, BracketPair, Buffer, Completion, Diagnostic, DiagnosticSeverity, Language,
30 Point, Selection, SelectionGoal, TransactionId,
31};
32use multi_buffer::MultiBufferChunks;
33pub use multi_buffer::{
34 Anchor, AnchorRangeExt, ExcerptId, ExcerptProperties, MultiBuffer, MultiBufferSnapshot,
35 ToOffset, ToPoint,
36};
37use postage::watch;
38use serde::{Deserialize, Serialize};
39use smallvec::SmallVec;
40use smol::Timer;
41use std::{
42 any::TypeId,
43 cmp::{self, Ordering},
44 iter::{self, FromIterator},
45 mem,
46 ops::{Deref, Range, RangeInclusive, Sub},
47 sync::Arc,
48 time::{Duration, Instant},
49};
50pub use sum_tree::Bias;
51use text::rope::TextDimension;
52use theme::{DiagnosticStyle, EditorStyle};
53use util::post_inc;
54use workspace::{ItemNavHistory, PathOpener, Workspace};
55
56const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
57const MAX_LINE_LEN: usize = 1024;
58const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
59
60action!(Cancel);
61action!(Backspace);
62action!(Delete);
63action!(Input, String);
64action!(Newline);
65action!(Tab);
66action!(Outdent);
67action!(DeleteLine);
68action!(DeleteToPreviousWordBoundary);
69action!(DeleteToNextWordBoundary);
70action!(DeleteToBeginningOfLine);
71action!(DeleteToEndOfLine);
72action!(CutToEndOfLine);
73action!(DuplicateLine);
74action!(MoveLineUp);
75action!(MoveLineDown);
76action!(Cut);
77action!(Copy);
78action!(Paste);
79action!(Undo);
80action!(Redo);
81action!(MoveUp);
82action!(MoveDown);
83action!(MoveLeft);
84action!(MoveRight);
85action!(MoveToPreviousWordBoundary);
86action!(MoveToNextWordBoundary);
87action!(MoveToBeginningOfLine);
88action!(MoveToEndOfLine);
89action!(MoveToBeginning);
90action!(MoveToEnd);
91action!(SelectUp);
92action!(SelectDown);
93action!(SelectLeft);
94action!(SelectRight);
95action!(SelectToPreviousWordBoundary);
96action!(SelectToNextWordBoundary);
97action!(SelectToBeginningOfLine, bool);
98action!(SelectToEndOfLine);
99action!(SelectToBeginning);
100action!(SelectToEnd);
101action!(SelectAll);
102action!(SelectLine);
103action!(SplitSelectionIntoLines);
104action!(AddSelectionAbove);
105action!(AddSelectionBelow);
106action!(SelectNext, bool);
107action!(ToggleComments);
108action!(SelectLargerSyntaxNode);
109action!(SelectSmallerSyntaxNode);
110action!(MoveToEnclosingBracket);
111action!(ShowNextDiagnostic);
112action!(GoToDefinition);
113action!(PageUp);
114action!(PageDown);
115action!(Fold);
116action!(Unfold);
117action!(FoldSelectedRanges);
118action!(Scroll, Vector2F);
119action!(Select, SelectPhase);
120action!(ShowCompletions);
121action!(ConfirmCompletion);
122
123pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
124 path_openers.push(Box::new(items::BufferOpener));
125 cx.add_bindings(vec![
126 Binding::new("escape", Cancel, Some("Editor")),
127 Binding::new("backspace", Backspace, Some("Editor")),
128 Binding::new("ctrl-h", Backspace, Some("Editor")),
129 Binding::new("delete", Delete, Some("Editor")),
130 Binding::new("ctrl-d", Delete, Some("Editor")),
131 Binding::new("enter", Newline, Some("Editor && mode == full")),
132 Binding::new(
133 "alt-enter",
134 Input("\n".into()),
135 Some("Editor && mode == auto_height"),
136 ),
137 Binding::new("enter", ConfirmCompletion, Some("Editor && completing")),
138 Binding::new("tab", Tab, Some("Editor")),
139 Binding::new("shift-tab", Outdent, Some("Editor")),
140 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
141 Binding::new(
142 "alt-backspace",
143 DeleteToPreviousWordBoundary,
144 Some("Editor"),
145 ),
146 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
147 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
148 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
149 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
150 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
151 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
152 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
153 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
154 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
155 Binding::new("cmd-x", Cut, Some("Editor")),
156 Binding::new("cmd-c", Copy, Some("Editor")),
157 Binding::new("cmd-v", Paste, Some("Editor")),
158 Binding::new("cmd-z", Undo, Some("Editor")),
159 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
160 Binding::new("up", MoveUp, Some("Editor")),
161 Binding::new("down", MoveDown, Some("Editor")),
162 Binding::new("left", MoveLeft, Some("Editor")),
163 Binding::new("right", MoveRight, Some("Editor")),
164 Binding::new("ctrl-p", MoveUp, Some("Editor")),
165 Binding::new("ctrl-n", MoveDown, Some("Editor")),
166 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
167 Binding::new("ctrl-f", MoveRight, Some("Editor")),
168 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
169 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
170 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
171 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
172 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
173 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
174 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
175 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
176 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
177 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
178 Binding::new("shift-up", SelectUp, Some("Editor")),
179 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
180 Binding::new("shift-down", SelectDown, Some("Editor")),
181 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
182 Binding::new("shift-left", SelectLeft, Some("Editor")),
183 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
184 Binding::new("shift-right", SelectRight, Some("Editor")),
185 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
186 Binding::new(
187 "alt-shift-left",
188 SelectToPreviousWordBoundary,
189 Some("Editor"),
190 ),
191 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
192 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
193 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
194 Binding::new(
195 "cmd-shift-left",
196 SelectToBeginningOfLine(true),
197 Some("Editor"),
198 ),
199 Binding::new(
200 "ctrl-shift-A",
201 SelectToBeginningOfLine(true),
202 Some("Editor"),
203 ),
204 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
205 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
206 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
207 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
208 Binding::new("cmd-a", SelectAll, Some("Editor")),
209 Binding::new("cmd-l", SelectLine, Some("Editor")),
210 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
211 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
212 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
213 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
214 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
215 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
216 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
217 Binding::new("cmd-/", ToggleComments, Some("Editor")),
218 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
219 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
220 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
221 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
222 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
223 Binding::new("f12", GoToDefinition, Some("Editor")),
224 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
225 Binding::new("pageup", PageUp, Some("Editor")),
226 Binding::new("pagedown", PageDown, Some("Editor")),
227 Binding::new("alt-cmd-[", Fold, Some("Editor")),
228 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
229 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
230 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
231 ]);
232
233 cx.add_action(Editor::open_new);
234 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
235 cx.add_action(Editor::select);
236 cx.add_action(Editor::cancel);
237 cx.add_action(Editor::handle_input);
238 cx.add_action(Editor::newline);
239 cx.add_action(Editor::backspace);
240 cx.add_action(Editor::delete);
241 cx.add_action(Editor::tab);
242 cx.add_action(Editor::outdent);
243 cx.add_action(Editor::delete_line);
244 cx.add_action(Editor::delete_to_previous_word_boundary);
245 cx.add_action(Editor::delete_to_next_word_boundary);
246 cx.add_action(Editor::delete_to_beginning_of_line);
247 cx.add_action(Editor::delete_to_end_of_line);
248 cx.add_action(Editor::cut_to_end_of_line);
249 cx.add_action(Editor::duplicate_line);
250 cx.add_action(Editor::move_line_up);
251 cx.add_action(Editor::move_line_down);
252 cx.add_action(Editor::cut);
253 cx.add_action(Editor::copy);
254 cx.add_action(Editor::paste);
255 cx.add_action(Editor::undo);
256 cx.add_action(Editor::redo);
257 cx.add_action(Editor::move_up);
258 cx.add_action(Editor::move_down);
259 cx.add_action(Editor::move_left);
260 cx.add_action(Editor::move_right);
261 cx.add_action(Editor::move_to_previous_word_boundary);
262 cx.add_action(Editor::move_to_next_word_boundary);
263 cx.add_action(Editor::move_to_beginning_of_line);
264 cx.add_action(Editor::move_to_end_of_line);
265 cx.add_action(Editor::move_to_beginning);
266 cx.add_action(Editor::move_to_end);
267 cx.add_action(Editor::select_up);
268 cx.add_action(Editor::select_down);
269 cx.add_action(Editor::select_left);
270 cx.add_action(Editor::select_right);
271 cx.add_action(Editor::select_to_previous_word_boundary);
272 cx.add_action(Editor::select_to_next_word_boundary);
273 cx.add_action(Editor::select_to_beginning_of_line);
274 cx.add_action(Editor::select_to_end_of_line);
275 cx.add_action(Editor::select_to_beginning);
276 cx.add_action(Editor::select_to_end);
277 cx.add_action(Editor::select_all);
278 cx.add_action(Editor::select_line);
279 cx.add_action(Editor::split_selection_into_lines);
280 cx.add_action(Editor::add_selection_above);
281 cx.add_action(Editor::add_selection_below);
282 cx.add_action(Editor::select_next);
283 cx.add_action(Editor::toggle_comments);
284 cx.add_action(Editor::select_larger_syntax_node);
285 cx.add_action(Editor::select_smaller_syntax_node);
286 cx.add_action(Editor::move_to_enclosing_bracket);
287 cx.add_action(Editor::show_next_diagnostic);
288 cx.add_action(Editor::go_to_definition);
289 cx.add_action(Editor::page_up);
290 cx.add_action(Editor::page_down);
291 cx.add_action(Editor::fold);
292 cx.add_action(Editor::unfold);
293 cx.add_action(Editor::fold_selected_ranges);
294 cx.add_action(Editor::show_completions);
295 cx.add_action(Editor::confirm_completion);
296}
297
298trait SelectionExt {
299 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
300 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
301 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
302 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
303 -> Range<u32>;
304}
305
306#[derive(Clone, Debug)]
307pub enum SelectPhase {
308 Begin {
309 position: DisplayPoint,
310 add: bool,
311 click_count: usize,
312 },
313 BeginColumnar {
314 position: DisplayPoint,
315 overshoot: u32,
316 },
317 Extend {
318 position: DisplayPoint,
319 click_count: usize,
320 },
321 Update {
322 position: DisplayPoint,
323 overshoot: u32,
324 scroll_position: Vector2F,
325 },
326 End,
327}
328
329#[derive(Clone, Debug)]
330enum SelectMode {
331 Character,
332 Word(Range<Anchor>),
333 Line(Range<Anchor>),
334 All,
335}
336
337#[derive(PartialEq, Eq)]
338pub enum Autoscroll {
339 Fit,
340 Center,
341 Newest,
342}
343
344#[derive(Copy, Clone, PartialEq, Eq)]
345pub enum EditorMode {
346 SingleLine,
347 AutoHeight { max_lines: usize },
348 Full,
349}
350
351#[derive(Clone)]
352pub struct EditorSettings {
353 pub tab_size: usize,
354 pub soft_wrap: SoftWrap,
355 pub style: EditorStyle,
356}
357
358#[derive(Clone)]
359pub enum SoftWrap {
360 None,
361 EditorWidth,
362 Column(u32),
363}
364
365pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
366
367pub struct Editor {
368 handle: WeakViewHandle<Self>,
369 buffer: ModelHandle<MultiBuffer>,
370 display_map: ModelHandle<DisplayMap>,
371 next_selection_id: usize,
372 selections: Arc<[Selection<Anchor>]>,
373 pending_selection: Option<PendingSelection>,
374 columnar_selection_tail: Option<Anchor>,
375 add_selections_state: Option<AddSelectionsState>,
376 select_next_state: Option<SelectNextState>,
377 selection_history:
378 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
379 autoclose_stack: Vec<BracketPairState>,
380 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
381 active_diagnostics: Option<ActiveDiagnosticGroup>,
382 scroll_position: Vector2F,
383 scroll_top_anchor: Option<Anchor>,
384 autoscroll_request: Option<Autoscroll>,
385 build_settings: BuildSettings,
386 focused: bool,
387 show_local_cursors: bool,
388 blink_epoch: usize,
389 blinking_paused: bool,
390 mode: EditorMode,
391 vertical_scroll_margin: f32,
392 placeholder_text: Option<Arc<str>>,
393 highlighted_rows: Option<Range<u32>>,
394 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
395 nav_history: Option<ItemNavHistory>,
396 completion_state: Option<CompletionState>,
397}
398
399pub struct EditorSnapshot {
400 pub mode: EditorMode,
401 pub display_snapshot: DisplaySnapshot,
402 pub placeholder_text: Option<Arc<str>>,
403 is_focused: bool,
404 scroll_position: Vector2F,
405 scroll_top_anchor: Option<Anchor>,
406}
407
408struct PendingSelection {
409 selection: Selection<Anchor>,
410 mode: SelectMode,
411}
412
413struct AddSelectionsState {
414 above: bool,
415 stack: Vec<usize>,
416}
417
418struct SelectNextState {
419 query: AhoCorasick,
420 wordwise: bool,
421 done: bool,
422}
423
424#[derive(Debug)]
425struct BracketPairState {
426 ranges: Vec<Range<Anchor>>,
427 pair: BracketPair,
428}
429
430struct CompletionState {
431 completions: Arc<[Completion<Anchor>]>,
432 selected_item: usize,
433 list: UniformListState,
434}
435
436#[derive(Debug)]
437struct ActiveDiagnosticGroup {
438 primary_range: Range<Anchor>,
439 primary_message: String,
440 blocks: HashMap<BlockId, Diagnostic>,
441 is_valid: bool,
442}
443
444#[derive(Serialize, Deserialize)]
445struct ClipboardSelection {
446 len: usize,
447 is_entire_line: bool,
448}
449
450pub struct NavigationData {
451 anchor: Anchor,
452 offset: usize,
453}
454
455#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord)]
456pub enum CharKind {
457 Newline,
458 Punctuation,
459 Whitespace,
460 Word,
461}
462
463impl Editor {
464 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
465 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
466 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
467 let mut view = Self::for_buffer(buffer, build_settings, cx);
468 view.mode = EditorMode::SingleLine;
469 view
470 }
471
472 pub fn auto_height(
473 max_lines: usize,
474 build_settings: BuildSettings,
475 cx: &mut ViewContext<Self>,
476 ) -> Self {
477 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
478 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
479 let mut view = Self::for_buffer(buffer, build_settings, cx);
480 view.mode = EditorMode::AutoHeight { max_lines };
481 view
482 }
483
484 pub fn for_buffer(
485 buffer: ModelHandle<MultiBuffer>,
486 build_settings: BuildSettings,
487 cx: &mut ViewContext<Self>,
488 ) -> Self {
489 Self::new(buffer, build_settings, cx)
490 }
491
492 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
493 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
494 clone.scroll_position = self.scroll_position;
495 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
496 clone.nav_history = self
497 .nav_history
498 .as_ref()
499 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
500 clone
501 }
502
503 pub fn new(
504 buffer: ModelHandle<MultiBuffer>,
505 build_settings: BuildSettings,
506 cx: &mut ViewContext<Self>,
507 ) -> Self {
508 let settings = build_settings(cx);
509 let display_map = cx.add_model(|cx| {
510 DisplayMap::new(
511 buffer.clone(),
512 settings.tab_size,
513 settings.style.text.font_id,
514 settings.style.text.font_size,
515 None,
516 cx,
517 )
518 });
519 cx.observe(&buffer, Self::on_buffer_changed).detach();
520 cx.subscribe(&buffer, Self::on_buffer_event).detach();
521 cx.observe(&display_map, Self::on_display_map_changed)
522 .detach();
523
524 let mut this = Self {
525 handle: cx.weak_handle(),
526 buffer,
527 display_map,
528 selections: Arc::from([]),
529 pending_selection: None,
530 columnar_selection_tail: None,
531 next_selection_id: 0,
532 add_selections_state: None,
533 select_next_state: None,
534 selection_history: Default::default(),
535 autoclose_stack: Default::default(),
536 select_larger_syntax_node_stack: Vec::new(),
537 active_diagnostics: None,
538 build_settings,
539 scroll_position: Vector2F::zero(),
540 scroll_top_anchor: None,
541 autoscroll_request: None,
542 focused: false,
543 show_local_cursors: false,
544 blink_epoch: 0,
545 blinking_paused: false,
546 mode: EditorMode::Full,
547 vertical_scroll_margin: 3.0,
548 placeholder_text: None,
549 highlighted_rows: None,
550 highlighted_ranges: Default::default(),
551 nav_history: None,
552 completion_state: None,
553 };
554 let selection = Selection {
555 id: post_inc(&mut this.next_selection_id),
556 start: 0,
557 end: 0,
558 reversed: false,
559 goal: SelectionGoal::None,
560 };
561 this.update_selections(vec![selection], None, cx);
562 this
563 }
564
565 pub fn open_new(
566 workspace: &mut Workspace,
567 _: &workspace::OpenNew,
568 cx: &mut ViewContext<Workspace>,
569 ) {
570 let buffer = cx
571 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
572 workspace.open_item(BufferItemHandle(buffer), cx);
573 }
574
575 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
576 self.buffer.read(cx).replica_id()
577 }
578
579 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
580 &self.buffer
581 }
582
583 pub fn title(&self, cx: &AppContext) -> String {
584 let filename = self
585 .buffer()
586 .read(cx)
587 .file(cx)
588 .map(|file| file.file_name(cx));
589 if let Some(name) = filename {
590 name.to_string_lossy().into()
591 } else {
592 "untitled".into()
593 }
594 }
595
596 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
597 EditorSnapshot {
598 mode: self.mode,
599 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
600 scroll_position: self.scroll_position,
601 scroll_top_anchor: self.scroll_top_anchor.clone(),
602 placeholder_text: self.placeholder_text.clone(),
603 is_focused: self
604 .handle
605 .upgrade(cx)
606 .map_or(false, |handle| handle.is_focused(cx)),
607 }
608 }
609
610 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
611 self.buffer.read(cx).language(cx)
612 }
613
614 pub fn set_placeholder_text(
615 &mut self,
616 placeholder_text: impl Into<Arc<str>>,
617 cx: &mut ViewContext<Self>,
618 ) {
619 self.placeholder_text = Some(placeholder_text.into());
620 cx.notify();
621 }
622
623 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
624 self.vertical_scroll_margin = margin_rows as f32;
625 cx.notify();
626 }
627
628 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
629 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
630
631 if scroll_position.y() == 0. {
632 self.scroll_top_anchor = None;
633 self.scroll_position = scroll_position;
634 } else {
635 let scroll_top_buffer_offset =
636 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
637 let anchor = map
638 .buffer_snapshot
639 .anchor_at(scroll_top_buffer_offset, Bias::Right);
640 self.scroll_position = vec2f(
641 scroll_position.x(),
642 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
643 );
644 self.scroll_top_anchor = Some(anchor);
645 }
646
647 cx.notify();
648 }
649
650 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
651 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
652 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
653 }
654
655 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
656 if max < self.scroll_position.x() {
657 self.scroll_position.set_x(max);
658 true
659 } else {
660 false
661 }
662 }
663
664 pub fn autoscroll_vertically(
665 &mut self,
666 viewport_height: f32,
667 line_height: f32,
668 cx: &mut ViewContext<Self>,
669 ) -> bool {
670 let visible_lines = viewport_height / line_height;
671 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
672 let mut scroll_position =
673 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
674 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
675 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
676 } else {
677 display_map.max_point().row().saturating_sub(1) as f32
678 };
679 if scroll_position.y() > max_scroll_top {
680 scroll_position.set_y(max_scroll_top);
681 self.set_scroll_position(scroll_position, cx);
682 }
683
684 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
685 autoscroll
686 } else {
687 return false;
688 };
689
690 let first_cursor_top;
691 let last_cursor_bottom;
692 if let Some(highlighted_rows) = &self.highlighted_rows {
693 first_cursor_top = highlighted_rows.start as f32;
694 last_cursor_bottom = first_cursor_top + 1.;
695 } else if autoscroll == Autoscroll::Newest {
696 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
697 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
698 last_cursor_bottom = first_cursor_top + 1.;
699 } else {
700 let selections = self.local_selections::<Point>(cx);
701 first_cursor_top = selections
702 .first()
703 .unwrap()
704 .head()
705 .to_display_point(&display_map)
706 .row() as f32;
707 last_cursor_bottom = selections
708 .last()
709 .unwrap()
710 .head()
711 .to_display_point(&display_map)
712 .row() as f32
713 + 1.0;
714 }
715
716 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
717 0.
718 } else {
719 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
720 };
721 if margin < 0.0 {
722 return false;
723 }
724
725 match autoscroll {
726 Autoscroll::Fit | Autoscroll::Newest => {
727 let margin = margin.min(self.vertical_scroll_margin);
728 let target_top = (first_cursor_top - margin).max(0.0);
729 let target_bottom = last_cursor_bottom + margin;
730 let start_row = scroll_position.y();
731 let end_row = start_row + visible_lines;
732
733 if target_top < start_row {
734 scroll_position.set_y(target_top);
735 self.set_scroll_position(scroll_position, cx);
736 } else if target_bottom >= end_row {
737 scroll_position.set_y(target_bottom - visible_lines);
738 self.set_scroll_position(scroll_position, cx);
739 }
740 }
741 Autoscroll::Center => {
742 scroll_position.set_y((first_cursor_top - margin).max(0.0));
743 self.set_scroll_position(scroll_position, cx);
744 }
745 }
746
747 true
748 }
749
750 pub fn autoscroll_horizontally(
751 &mut self,
752 start_row: u32,
753 viewport_width: f32,
754 scroll_width: f32,
755 max_glyph_width: f32,
756 layouts: &[text_layout::Line],
757 cx: &mut ViewContext<Self>,
758 ) -> bool {
759 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
760 let selections = self.local_selections::<Point>(cx);
761
762 let mut target_left;
763 let mut target_right;
764
765 if self.highlighted_rows.is_some() {
766 target_left = 0.0_f32;
767 target_right = 0.0_f32;
768 } else {
769 target_left = std::f32::INFINITY;
770 target_right = 0.0_f32;
771 for selection in selections {
772 let head = selection.head().to_display_point(&display_map);
773 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
774 let start_column = head.column().saturating_sub(3);
775 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
776 target_left = target_left.min(
777 layouts[(head.row() - start_row) as usize]
778 .x_for_index(start_column as usize),
779 );
780 target_right = target_right.max(
781 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
782 + max_glyph_width,
783 );
784 }
785 }
786 }
787
788 target_right = target_right.min(scroll_width);
789
790 if target_right - target_left > viewport_width {
791 return false;
792 }
793
794 let scroll_left = self.scroll_position.x() * max_glyph_width;
795 let scroll_right = scroll_left + viewport_width;
796
797 if target_left < scroll_left {
798 self.scroll_position.set_x(target_left / max_glyph_width);
799 true
800 } else if target_right > scroll_right {
801 self.scroll_position
802 .set_x((target_right - viewport_width) / max_glyph_width);
803 true
804 } else {
805 false
806 }
807 }
808
809 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
810 match phase {
811 SelectPhase::Begin {
812 position,
813 add,
814 click_count,
815 } => self.begin_selection(*position, *add, *click_count, cx),
816 SelectPhase::BeginColumnar {
817 position,
818 overshoot,
819 } => self.begin_columnar_selection(*position, *overshoot, cx),
820 SelectPhase::Extend {
821 position,
822 click_count,
823 } => self.extend_selection(*position, *click_count, cx),
824 SelectPhase::Update {
825 position,
826 overshoot,
827 scroll_position,
828 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
829 SelectPhase::End => self.end_selection(cx),
830 }
831 }
832
833 fn extend_selection(
834 &mut self,
835 position: DisplayPoint,
836 click_count: usize,
837 cx: &mut ViewContext<Self>,
838 ) {
839 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
840 let tail = self
841 .newest_selection::<usize>(&display_map.buffer_snapshot)
842 .tail();
843 self.begin_selection(position, false, click_count, cx);
844
845 let position = position.to_offset(&display_map, Bias::Left);
846 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
847 let pending = self.pending_selection.as_mut().unwrap();
848
849 if position >= tail {
850 pending.selection.start = tail_anchor.clone();
851 } else {
852 pending.selection.end = tail_anchor.clone();
853 pending.selection.reversed = true;
854 }
855
856 match &mut pending.mode {
857 SelectMode::Word(range) | SelectMode::Line(range) => {
858 *range = tail_anchor.clone()..tail_anchor
859 }
860 _ => {}
861 }
862 }
863
864 fn begin_selection(
865 &mut self,
866 position: DisplayPoint,
867 add: bool,
868 click_count: usize,
869 cx: &mut ViewContext<Self>,
870 ) {
871 if !self.focused {
872 cx.focus_self();
873 cx.emit(Event::Activate);
874 }
875
876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
877 let buffer = &display_map.buffer_snapshot;
878 let newest_selection = self.newest_anchor_selection().unwrap().clone();
879
880 let start;
881 let end;
882 let mode;
883 match click_count {
884 1 => {
885 start = buffer.anchor_before(position.to_point(&display_map));
886 end = start.clone();
887 mode = SelectMode::Character;
888 }
889 2 => {
890 let range = movement::surrounding_word(&display_map, position);
891 start = buffer.anchor_before(range.start.to_point(&display_map));
892 end = buffer.anchor_before(range.end.to_point(&display_map));
893 mode = SelectMode::Word(start.clone()..end.clone());
894 }
895 3 => {
896 let position = display_map.clip_point(position, Bias::Left);
897 let line_start = movement::line_beginning(&display_map, position, false);
898 let mut next_line_start = line_start.clone();
899 *next_line_start.row_mut() += 1;
900 *next_line_start.column_mut() = 0;
901 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
902
903 start = buffer.anchor_before(line_start.to_point(&display_map));
904 end = buffer.anchor_before(next_line_start.to_point(&display_map));
905 mode = SelectMode::Line(start.clone()..end.clone());
906 }
907 _ => {
908 start = buffer.anchor_before(0);
909 end = buffer.anchor_before(buffer.len());
910 mode = SelectMode::All;
911 }
912 }
913
914 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
915
916 let selection = Selection {
917 id: post_inc(&mut self.next_selection_id),
918 start,
919 end,
920 reversed: false,
921 goal: SelectionGoal::None,
922 };
923
924 if !add {
925 self.update_selections::<usize>(Vec::new(), None, cx);
926 } else if click_count > 1 {
927 // Remove the newest selection since it was only added as part of this multi-click.
928 let mut selections = self.local_selections(cx);
929 selections.retain(|selection| selection.id != newest_selection.id);
930 self.update_selections::<usize>(selections, None, cx)
931 }
932
933 self.pending_selection = Some(PendingSelection { selection, mode });
934
935 cx.notify();
936 }
937
938 fn begin_columnar_selection(
939 &mut self,
940 position: DisplayPoint,
941 overshoot: u32,
942 cx: &mut ViewContext<Self>,
943 ) {
944 if !self.focused {
945 cx.focus_self();
946 cx.emit(Event::Activate);
947 }
948
949 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
950 let tail = self
951 .newest_selection::<Point>(&display_map.buffer_snapshot)
952 .tail();
953 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
954
955 self.select_columns(
956 tail.to_display_point(&display_map),
957 position,
958 overshoot,
959 &display_map,
960 cx,
961 );
962 }
963
964 fn update_selection(
965 &mut self,
966 position: DisplayPoint,
967 overshoot: u32,
968 scroll_position: Vector2F,
969 cx: &mut ViewContext<Self>,
970 ) {
971 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
972
973 if let Some(tail) = self.columnar_selection_tail.as_ref() {
974 let tail = tail.to_display_point(&display_map);
975 self.select_columns(tail, position, overshoot, &display_map, cx);
976 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
977 let buffer = self.buffer.read(cx).snapshot(cx);
978 let head;
979 let tail;
980 match mode {
981 SelectMode::Character => {
982 head = position.to_point(&display_map);
983 tail = selection.tail().to_point(&buffer);
984 }
985 SelectMode::Word(original_range) => {
986 let original_display_range = original_range.start.to_display_point(&display_map)
987 ..original_range.end.to_display_point(&display_map);
988 let original_buffer_range = original_display_range.start.to_point(&display_map)
989 ..original_display_range.end.to_point(&display_map);
990 if movement::is_inside_word(&display_map, position)
991 || original_display_range.contains(&position)
992 {
993 let word_range = movement::surrounding_word(&display_map, position);
994 if word_range.start < original_display_range.start {
995 head = word_range.start.to_point(&display_map);
996 } else {
997 head = word_range.end.to_point(&display_map);
998 }
999 } else {
1000 head = position.to_point(&display_map);
1001 }
1002
1003 if head <= original_buffer_range.start {
1004 tail = original_buffer_range.end;
1005 } else {
1006 tail = original_buffer_range.start;
1007 }
1008 }
1009 SelectMode::Line(original_range) => {
1010 let original_display_range = original_range.start.to_display_point(&display_map)
1011 ..original_range.end.to_display_point(&display_map);
1012 let original_buffer_range = original_display_range.start.to_point(&display_map)
1013 ..original_display_range.end.to_point(&display_map);
1014 let line_start = movement::line_beginning(&display_map, position, false);
1015 let mut next_line_start = line_start.clone();
1016 *next_line_start.row_mut() += 1;
1017 *next_line_start.column_mut() = 0;
1018 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1019
1020 if line_start < original_display_range.start {
1021 head = line_start.to_point(&display_map);
1022 } else {
1023 head = next_line_start.to_point(&display_map);
1024 }
1025
1026 if head <= original_buffer_range.start {
1027 tail = original_buffer_range.end;
1028 } else {
1029 tail = original_buffer_range.start;
1030 }
1031 }
1032 SelectMode::All => {
1033 return;
1034 }
1035 };
1036
1037 if head < tail {
1038 selection.start = buffer.anchor_before(head);
1039 selection.end = buffer.anchor_before(tail);
1040 selection.reversed = true;
1041 } else {
1042 selection.start = buffer.anchor_before(tail);
1043 selection.end = buffer.anchor_before(head);
1044 selection.reversed = false;
1045 }
1046 } else {
1047 log::error!("update_selection dispatched with no pending selection");
1048 return;
1049 }
1050
1051 self.set_scroll_position(scroll_position, cx);
1052 cx.notify();
1053 }
1054
1055 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1056 self.columnar_selection_tail.take();
1057 if self.pending_selection.is_some() {
1058 let selections = self.local_selections::<usize>(cx);
1059 self.update_selections(selections, None, cx);
1060 }
1061 }
1062
1063 fn select_columns(
1064 &mut self,
1065 tail: DisplayPoint,
1066 head: DisplayPoint,
1067 overshoot: u32,
1068 display_map: &DisplaySnapshot,
1069 cx: &mut ViewContext<Self>,
1070 ) {
1071 let start_row = cmp::min(tail.row(), head.row());
1072 let end_row = cmp::max(tail.row(), head.row());
1073 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1074 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1075 let reversed = start_column < tail.column();
1076
1077 let selections = (start_row..=end_row)
1078 .filter_map(|row| {
1079 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1080 let start = display_map
1081 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1082 .to_point(&display_map);
1083 let end = display_map
1084 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1085 .to_point(&display_map);
1086 Some(Selection {
1087 id: post_inc(&mut self.next_selection_id),
1088 start,
1089 end,
1090 reversed,
1091 goal: SelectionGoal::None,
1092 })
1093 } else {
1094 None
1095 }
1096 })
1097 .collect::<Vec<_>>();
1098
1099 self.update_selections(selections, None, cx);
1100 cx.notify();
1101 }
1102
1103 pub fn is_selecting(&self) -> bool {
1104 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1105 }
1106
1107 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1108 if self.completion_state.take().is_some() {
1109 cx.notify();
1110 return;
1111 }
1112
1113 if self.mode != EditorMode::Full {
1114 cx.propagate_action();
1115 return;
1116 }
1117
1118 if self.active_diagnostics.is_some() {
1119 self.dismiss_diagnostics(cx);
1120 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1121 let buffer = self.buffer.read(cx).snapshot(cx);
1122 let selection = Selection {
1123 id: selection.id,
1124 start: selection.start.to_point(&buffer),
1125 end: selection.end.to_point(&buffer),
1126 reversed: selection.reversed,
1127 goal: selection.goal,
1128 };
1129 if self.local_selections::<Point>(cx).is_empty() {
1130 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1131 }
1132 } else {
1133 let buffer = self.buffer.read(cx).snapshot(cx);
1134 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1135 if self.selection_count() == 1 {
1136 if oldest_selection.is_empty() {
1137 cx.propagate_action();
1138 return;
1139 }
1140
1141 oldest_selection.start = oldest_selection.head().clone();
1142 oldest_selection.end = oldest_selection.head().clone();
1143 }
1144 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1145 }
1146 }
1147
1148 #[cfg(any(test, feature = "test-support"))]
1149 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1150 &self,
1151 cx: &mut MutableAppContext,
1152 ) -> Vec<Range<D>> {
1153 self.local_selections::<D>(cx)
1154 .iter()
1155 .map(|s| {
1156 if s.reversed {
1157 s.end.clone()..s.start.clone()
1158 } else {
1159 s.start.clone()..s.end.clone()
1160 }
1161 })
1162 .collect()
1163 }
1164
1165 #[cfg(any(test, feature = "test-support"))]
1166 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1167 let display_map = self
1168 .display_map
1169 .update(cx, |display_map, cx| display_map.snapshot(cx));
1170 self.selections
1171 .iter()
1172 .chain(
1173 self.pending_selection
1174 .as_ref()
1175 .map(|pending| &pending.selection),
1176 )
1177 .map(|s| {
1178 if s.reversed {
1179 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1180 } else {
1181 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1182 }
1183 })
1184 .collect()
1185 }
1186
1187 pub fn select_ranges<I, T>(
1188 &mut self,
1189 ranges: I,
1190 autoscroll: Option<Autoscroll>,
1191 cx: &mut ViewContext<Self>,
1192 ) where
1193 I: IntoIterator<Item = Range<T>>,
1194 T: ToOffset,
1195 {
1196 let buffer = self.buffer.read(cx).snapshot(cx);
1197 let selections = ranges
1198 .into_iter()
1199 .map(|range| {
1200 let mut start = range.start.to_offset(&buffer);
1201 let mut end = range.end.to_offset(&buffer);
1202 let reversed = if start > end {
1203 mem::swap(&mut start, &mut end);
1204 true
1205 } else {
1206 false
1207 };
1208 Selection {
1209 id: post_inc(&mut self.next_selection_id),
1210 start,
1211 end,
1212 reversed,
1213 goal: SelectionGoal::None,
1214 }
1215 })
1216 .collect::<Vec<_>>();
1217 self.update_selections(selections, autoscroll, cx);
1218 }
1219
1220 #[cfg(any(test, feature = "test-support"))]
1221 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1222 where
1223 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1224 {
1225 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1226 let selections = ranges
1227 .into_iter()
1228 .map(|range| {
1229 let mut start = range.start;
1230 let mut end = range.end;
1231 let reversed = if start > end {
1232 mem::swap(&mut start, &mut end);
1233 true
1234 } else {
1235 false
1236 };
1237 Selection {
1238 id: post_inc(&mut self.next_selection_id),
1239 start: start.to_point(&display_map),
1240 end: end.to_point(&display_map),
1241 reversed,
1242 goal: SelectionGoal::None,
1243 }
1244 })
1245 .collect();
1246 self.update_selections(selections, None, cx);
1247 }
1248
1249 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1250 let text = action.0.as_ref();
1251 if !self.skip_autoclose_end(text, cx) {
1252 self.start_transaction(cx);
1253 self.insert(text, cx);
1254 self.autoclose_pairs(cx);
1255 self.end_transaction(cx);
1256 }
1257 }
1258
1259 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1260 self.start_transaction(cx);
1261 let mut old_selections = SmallVec::<[_; 32]>::new();
1262 {
1263 let selections = self.local_selections::<Point>(cx);
1264 let buffer = self.buffer.read(cx).snapshot(cx);
1265 for selection in selections.iter() {
1266 let start_point = selection.start;
1267 let indent = buffer
1268 .indent_column_for_line(start_point.row)
1269 .min(start_point.column);
1270 let start = selection.start.to_offset(&buffer);
1271 let end = selection.end.to_offset(&buffer);
1272
1273 let mut insert_extra_newline = false;
1274 if let Some(language) = buffer.language() {
1275 let leading_whitespace_len = buffer
1276 .reversed_chars_at(start)
1277 .take_while(|c| c.is_whitespace() && *c != '\n')
1278 .map(|c| c.len_utf8())
1279 .sum::<usize>();
1280
1281 let trailing_whitespace_len = buffer
1282 .chars_at(end)
1283 .take_while(|c| c.is_whitespace() && *c != '\n')
1284 .map(|c| c.len_utf8())
1285 .sum::<usize>();
1286
1287 insert_extra_newline = language.brackets().iter().any(|pair| {
1288 let pair_start = pair.start.trim_end();
1289 let pair_end = pair.end.trim_start();
1290
1291 pair.newline
1292 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1293 && buffer.contains_str_at(
1294 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1295 pair_start,
1296 )
1297 });
1298 }
1299
1300 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1301 }
1302 }
1303
1304 self.buffer.update(cx, |buffer, cx| {
1305 let mut delta = 0_isize;
1306 let mut pending_edit: Option<PendingEdit> = None;
1307 for (_, range, indent, insert_extra_newline) in &old_selections {
1308 if pending_edit.as_ref().map_or(false, |pending| {
1309 pending.indent != *indent
1310 || pending.insert_extra_newline != *insert_extra_newline
1311 }) {
1312 let pending = pending_edit.take().unwrap();
1313 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1314 new_text.push('\n');
1315 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1316 if pending.insert_extra_newline {
1317 new_text = new_text.repeat(2);
1318 }
1319 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1320 delta += pending.delta;
1321 }
1322
1323 let start = (range.start as isize + delta) as usize;
1324 let end = (range.end as isize + delta) as usize;
1325 let mut text_len = *indent as usize + 1;
1326 if *insert_extra_newline {
1327 text_len *= 2;
1328 }
1329
1330 let pending = pending_edit.get_or_insert_with(Default::default);
1331 pending.delta += text_len as isize - (end - start) as isize;
1332 pending.indent = *indent;
1333 pending.insert_extra_newline = *insert_extra_newline;
1334 pending.ranges.push(start..end);
1335 }
1336
1337 let pending = pending_edit.unwrap();
1338 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1339 new_text.push('\n');
1340 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1341 if pending.insert_extra_newline {
1342 new_text = new_text.repeat(2);
1343 }
1344 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1345
1346 let buffer = buffer.read(cx);
1347 self.selections = self
1348 .selections
1349 .iter()
1350 .cloned()
1351 .zip(old_selections)
1352 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1353 if insert_extra_newline {
1354 let mut cursor = new_selection.start.to_point(&buffer);
1355 cursor.row -= 1;
1356 cursor.column = buffer.line_len(cursor.row);
1357 let anchor = buffer.anchor_after(cursor);
1358 new_selection.start = anchor.clone();
1359 new_selection.end = anchor;
1360 }
1361 new_selection
1362 })
1363 .collect();
1364 });
1365
1366 self.request_autoscroll(Autoscroll::Fit, cx);
1367 self.end_transaction(cx);
1368
1369 #[derive(Default)]
1370 struct PendingEdit {
1371 indent: u32,
1372 insert_extra_newline: bool,
1373 delta: isize,
1374 ranges: SmallVec<[Range<usize>; 32]>,
1375 }
1376 }
1377
1378 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1379 self.start_transaction(cx);
1380 let old_selections = self.local_selections::<usize>(cx);
1381 self.buffer.update(cx, |buffer, cx| {
1382 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1383 buffer.edit_with_autoindent(edit_ranges, text, cx);
1384 });
1385
1386 let selections = self.local_selections::<usize>(cx);
1387 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1388 self.end_transaction(cx);
1389 }
1390
1391 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1392 let selections = self.local_selections::<usize>(cx);
1393 let mut bracket_pair_state = None;
1394 let mut new_selections = None;
1395 self.buffer.update(cx, |buffer, cx| {
1396 let mut snapshot = buffer.snapshot(cx);
1397 let left_biased_selections = selections
1398 .iter()
1399 .map(|selection| Selection {
1400 id: selection.id,
1401 start: snapshot.anchor_before(selection.start),
1402 end: snapshot.anchor_before(selection.end),
1403 reversed: selection.reversed,
1404 goal: selection.goal,
1405 })
1406 .collect::<Vec<_>>();
1407
1408 let autoclose_pair = snapshot.language().and_then(|language| {
1409 let first_selection_start = selections.first().unwrap().start;
1410 let pair = language.brackets().iter().find(|pair| {
1411 snapshot.contains_str_at(
1412 first_selection_start.saturating_sub(pair.start.len()),
1413 &pair.start,
1414 )
1415 });
1416 pair.and_then(|pair| {
1417 let should_autoclose = selections[1..].iter().all(|selection| {
1418 snapshot.contains_str_at(
1419 selection.start.saturating_sub(pair.start.len()),
1420 &pair.start,
1421 )
1422 });
1423
1424 if should_autoclose {
1425 Some(pair.clone())
1426 } else {
1427 None
1428 }
1429 })
1430 });
1431
1432 if let Some(pair) = autoclose_pair {
1433 let selection_ranges = selections
1434 .iter()
1435 .map(|selection| {
1436 let start = selection.start.to_offset(&snapshot);
1437 start..start
1438 })
1439 .collect::<SmallVec<[_; 32]>>();
1440
1441 buffer.edit(selection_ranges, &pair.end, cx);
1442 snapshot = buffer.snapshot(cx);
1443
1444 new_selections = Some(
1445 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1446 .collect::<Vec<_>>(),
1447 );
1448
1449 if pair.end.len() == 1 {
1450 let mut delta = 0;
1451 bracket_pair_state = Some(BracketPairState {
1452 ranges: selections
1453 .iter()
1454 .map(move |selection| {
1455 let offset = selection.start + delta;
1456 delta += 1;
1457 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1458 })
1459 .collect(),
1460 pair,
1461 });
1462 }
1463 }
1464 });
1465
1466 if let Some(new_selections) = new_selections {
1467 self.update_selections(new_selections, None, cx);
1468 }
1469 if let Some(bracket_pair_state) = bracket_pair_state {
1470 self.autoclose_stack.push(bracket_pair_state);
1471 }
1472 }
1473
1474 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1475 let old_selections = self.local_selections::<usize>(cx);
1476 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1477 autoclose_pair
1478 } else {
1479 return false;
1480 };
1481 if text != autoclose_pair.pair.end {
1482 return false;
1483 }
1484
1485 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1486
1487 let buffer = self.buffer.read(cx).snapshot(cx);
1488 if old_selections
1489 .iter()
1490 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1491 .all(|(selection, autoclose_range)| {
1492 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1493 selection.is_empty() && selection.start == autoclose_range_end
1494 })
1495 {
1496 let new_selections = old_selections
1497 .into_iter()
1498 .map(|selection| {
1499 let cursor = selection.start + 1;
1500 Selection {
1501 id: selection.id,
1502 start: cursor,
1503 end: cursor,
1504 reversed: false,
1505 goal: SelectionGoal::None,
1506 }
1507 })
1508 .collect();
1509 self.autoclose_stack.pop();
1510 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1511 true
1512 } else {
1513 false
1514 }
1515 }
1516
1517 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1518 let position = self
1519 .newest_selection::<usize>(&self.buffer.read(cx).read(cx))
1520 .head();
1521
1522 let completions = self
1523 .buffer
1524 .update(cx, |buffer, cx| buffer.completions(position, cx));
1525
1526 cx.spawn_weak(|this, mut cx| async move {
1527 let completions = completions.await?;
1528 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1529 this.update(&mut cx, |this, cx| {
1530 this.completion_state = Some(CompletionState {
1531 completions: completions.into(),
1532 selected_item: 0,
1533 list: Default::default(),
1534 });
1535 cx.notify();
1536 });
1537 }
1538
1539 Ok::<_, anyhow::Error>(())
1540 })
1541 .detach_and_log_err(cx);
1542 }
1543
1544 fn confirm_completion(&mut self, _: &ConfirmCompletion, cx: &mut ViewContext<Self>) {
1545 if let Some(completion_state) = self.completion_state.take() {
1546 if let Some(completion) = completion_state
1547 .completions
1548 .get(completion_state.selected_item)
1549 {
1550 self.buffer.update(cx, |buffer, cx| {
1551 buffer.edit_with_autoindent(
1552 [completion.old_range.clone()],
1553 completion.new_text.clone(),
1554 cx,
1555 );
1556 })
1557 }
1558 }
1559 }
1560
1561 pub fn has_completions(&self) -> bool {
1562 self.completion_state.is_some()
1563 }
1564
1565 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1566 self.completion_state.as_ref().map(|state| {
1567 let build_settings = self.build_settings.clone();
1568 let settings = build_settings(cx);
1569 let completions = state.completions.clone();
1570 let selected_item = state.selected_item;
1571 UniformList::new(
1572 state.list.clone(),
1573 state.completions.len(),
1574 move |range, items, cx| {
1575 let settings = build_settings(cx);
1576 let start_ix = range.start;
1577 for (ix, completion) in completions[range].iter().enumerate() {
1578 let item_style = if start_ix + ix == selected_item {
1579 settings.style.autocomplete.selected_item
1580 } else {
1581 settings.style.autocomplete.item
1582 };
1583 items.push(
1584 Label::new(completion.label().to_string(), settings.style.text.clone())
1585 .contained()
1586 .with_style(item_style)
1587 .boxed(),
1588 );
1589 }
1590 },
1591 )
1592 .with_width_from_item(
1593 state
1594 .completions
1595 .iter()
1596 .enumerate()
1597 .max_by_key(|(_, completion)| completion.label().chars().count())
1598 .map(|(ix, _)| ix),
1599 )
1600 .contained()
1601 .with_style(settings.style.autocomplete.container)
1602 .boxed()
1603 })
1604 }
1605
1606 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1607 self.start_transaction(cx);
1608 self.select_all(&SelectAll, cx);
1609 self.insert("", cx);
1610 self.end_transaction(cx);
1611 }
1612
1613 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1614 self.start_transaction(cx);
1615 let mut selections = self.local_selections::<Point>(cx);
1616 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1617 for selection in &mut selections {
1618 if selection.is_empty() {
1619 let head = selection.head().to_display_point(&display_map);
1620 let cursor = movement::left(&display_map, head)
1621 .unwrap()
1622 .to_point(&display_map);
1623 selection.set_head(cursor);
1624 selection.goal = SelectionGoal::None;
1625 }
1626 }
1627 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1628 self.insert("", cx);
1629 self.end_transaction(cx);
1630 }
1631
1632 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1633 self.start_transaction(cx);
1634 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1635 let mut selections = self.local_selections::<Point>(cx);
1636 for selection in &mut selections {
1637 if selection.is_empty() {
1638 let head = selection.head().to_display_point(&display_map);
1639 let cursor = movement::right(&display_map, head)
1640 .unwrap()
1641 .to_point(&display_map);
1642 selection.set_head(cursor);
1643 selection.goal = SelectionGoal::None;
1644 }
1645 }
1646 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1647 self.insert(&"", cx);
1648 self.end_transaction(cx);
1649 }
1650
1651 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1652 self.start_transaction(cx);
1653 let tab_size = (self.build_settings)(cx).tab_size;
1654 let mut selections = self.local_selections::<Point>(cx);
1655 let mut last_indent = None;
1656 self.buffer.update(cx, |buffer, cx| {
1657 for selection in &mut selections {
1658 if selection.is_empty() {
1659 let char_column = buffer
1660 .read(cx)
1661 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1662 .flat_map(str::chars)
1663 .count();
1664 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1665 buffer.edit(
1666 [selection.start..selection.start],
1667 " ".repeat(chars_to_next_tab_stop),
1668 cx,
1669 );
1670 selection.start.column += chars_to_next_tab_stop as u32;
1671 selection.end = selection.start;
1672 } else {
1673 let mut start_row = selection.start.row;
1674 let mut end_row = selection.end.row + 1;
1675
1676 // If a selection ends at the beginning of a line, don't indent
1677 // that last line.
1678 if selection.end.column == 0 {
1679 end_row -= 1;
1680 }
1681
1682 // Avoid re-indenting a row that has already been indented by a
1683 // previous selection, but still update this selection's column
1684 // to reflect that indentation.
1685 if let Some((last_indent_row, last_indent_len)) = last_indent {
1686 if last_indent_row == selection.start.row {
1687 selection.start.column += last_indent_len;
1688 start_row += 1;
1689 }
1690 if last_indent_row == selection.end.row {
1691 selection.end.column += last_indent_len;
1692 }
1693 }
1694
1695 for row in start_row..end_row {
1696 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1697 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1698 let row_start = Point::new(row, 0);
1699 buffer.edit(
1700 [row_start..row_start],
1701 " ".repeat(columns_to_next_tab_stop),
1702 cx,
1703 );
1704
1705 // Update this selection's endpoints to reflect the indentation.
1706 if row == selection.start.row {
1707 selection.start.column += columns_to_next_tab_stop as u32;
1708 }
1709 if row == selection.end.row {
1710 selection.end.column += columns_to_next_tab_stop as u32;
1711 }
1712
1713 last_indent = Some((row, columns_to_next_tab_stop as u32));
1714 }
1715 }
1716 }
1717 });
1718
1719 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1720 self.end_transaction(cx);
1721 }
1722
1723 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1724 self.start_transaction(cx);
1725 let tab_size = (self.build_settings)(cx).tab_size;
1726 let selections = self.local_selections::<Point>(cx);
1727 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1728 let mut deletion_ranges = Vec::new();
1729 let mut last_outdent = None;
1730 {
1731 let buffer = self.buffer.read(cx).read(cx);
1732 for selection in &selections {
1733 let mut rows = selection.spanned_rows(false, &display_map);
1734
1735 // Avoid re-outdenting a row that has already been outdented by a
1736 // previous selection.
1737 if let Some(last_row) = last_outdent {
1738 if last_row == rows.start {
1739 rows.start += 1;
1740 }
1741 }
1742
1743 for row in rows {
1744 let column = buffer.indent_column_for_line(row) as usize;
1745 if column > 0 {
1746 let mut deletion_len = (column % tab_size) as u32;
1747 if deletion_len == 0 {
1748 deletion_len = tab_size as u32;
1749 }
1750 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1751 last_outdent = Some(row);
1752 }
1753 }
1754 }
1755 }
1756 self.buffer.update(cx, |buffer, cx| {
1757 buffer.edit(deletion_ranges, "", cx);
1758 });
1759
1760 self.update_selections(
1761 self.local_selections::<usize>(cx),
1762 Some(Autoscroll::Fit),
1763 cx,
1764 );
1765 self.end_transaction(cx);
1766 }
1767
1768 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1769 self.start_transaction(cx);
1770
1771 let selections = self.local_selections::<Point>(cx);
1772 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1773 let buffer = self.buffer.read(cx).snapshot(cx);
1774
1775 let mut new_cursors = Vec::new();
1776 let mut edit_ranges = Vec::new();
1777 let mut selections = selections.iter().peekable();
1778 while let Some(selection) = selections.next() {
1779 let mut rows = selection.spanned_rows(false, &display_map);
1780 let goal_display_column = selection.head().to_display_point(&display_map).column();
1781
1782 // Accumulate contiguous regions of rows that we want to delete.
1783 while let Some(next_selection) = selections.peek() {
1784 let next_rows = next_selection.spanned_rows(false, &display_map);
1785 if next_rows.start <= rows.end {
1786 rows.end = next_rows.end;
1787 selections.next().unwrap();
1788 } else {
1789 break;
1790 }
1791 }
1792
1793 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1794 let edit_end;
1795 let cursor_buffer_row;
1796 if buffer.max_point().row >= rows.end {
1797 // If there's a line after the range, delete the \n from the end of the row range
1798 // and position the cursor on the next line.
1799 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1800 cursor_buffer_row = rows.end;
1801 } else {
1802 // If there isn't a line after the range, delete the \n from the line before the
1803 // start of the row range and position the cursor there.
1804 edit_start = edit_start.saturating_sub(1);
1805 edit_end = buffer.len();
1806 cursor_buffer_row = rows.start.saturating_sub(1);
1807 }
1808
1809 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1810 *cursor.column_mut() =
1811 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1812
1813 new_cursors.push((
1814 selection.id,
1815 buffer.anchor_after(cursor.to_point(&display_map)),
1816 ));
1817 edit_ranges.push(edit_start..edit_end);
1818 }
1819
1820 let buffer = self.buffer.update(cx, |buffer, cx| {
1821 buffer.edit(edit_ranges, "", cx);
1822 buffer.snapshot(cx)
1823 });
1824 let new_selections = new_cursors
1825 .into_iter()
1826 .map(|(id, cursor)| {
1827 let cursor = cursor.to_point(&buffer);
1828 Selection {
1829 id,
1830 start: cursor,
1831 end: cursor,
1832 reversed: false,
1833 goal: SelectionGoal::None,
1834 }
1835 })
1836 .collect();
1837 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1838 self.end_transaction(cx);
1839 }
1840
1841 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1842 self.start_transaction(cx);
1843
1844 let selections = self.local_selections::<Point>(cx);
1845 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1846 let buffer = &display_map.buffer_snapshot;
1847
1848 let mut edits = Vec::new();
1849 let mut selections_iter = selections.iter().peekable();
1850 while let Some(selection) = selections_iter.next() {
1851 // Avoid duplicating the same lines twice.
1852 let mut rows = selection.spanned_rows(false, &display_map);
1853
1854 while let Some(next_selection) = selections_iter.peek() {
1855 let next_rows = next_selection.spanned_rows(false, &display_map);
1856 if next_rows.start <= rows.end - 1 {
1857 rows.end = next_rows.end;
1858 selections_iter.next().unwrap();
1859 } else {
1860 break;
1861 }
1862 }
1863
1864 // Copy the text from the selected row region and splice it at the start of the region.
1865 let start = Point::new(rows.start, 0);
1866 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1867 let text = buffer
1868 .text_for_range(start..end)
1869 .chain(Some("\n"))
1870 .collect::<String>();
1871 edits.push((start, text, rows.len() as u32));
1872 }
1873
1874 self.buffer.update(cx, |buffer, cx| {
1875 for (point, text, _) in edits.into_iter().rev() {
1876 buffer.edit(Some(point..point), text, cx);
1877 }
1878 });
1879
1880 self.request_autoscroll(Autoscroll::Fit, cx);
1881 self.end_transaction(cx);
1882 }
1883
1884 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1885 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1886 let buffer = self.buffer.read(cx).snapshot(cx);
1887
1888 let mut edits = Vec::new();
1889 let mut unfold_ranges = Vec::new();
1890 let mut refold_ranges = Vec::new();
1891
1892 let selections = self.local_selections::<Point>(cx);
1893 let mut selections = selections.iter().peekable();
1894 let mut contiguous_row_selections = Vec::new();
1895 let mut new_selections = Vec::new();
1896
1897 while let Some(selection) = selections.next() {
1898 // Find all the selections that span a contiguous row range
1899 contiguous_row_selections.push(selection.clone());
1900 let start_row = selection.start.row;
1901 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1902 display_map.next_line_boundary(selection.end).0.row + 1
1903 } else {
1904 selection.end.row
1905 };
1906
1907 while let Some(next_selection) = selections.peek() {
1908 if next_selection.start.row <= end_row {
1909 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1910 display_map.next_line_boundary(next_selection.end).0.row + 1
1911 } else {
1912 next_selection.end.row
1913 };
1914 contiguous_row_selections.push(selections.next().unwrap().clone());
1915 } else {
1916 break;
1917 }
1918 }
1919
1920 // Move the text spanned by the row range to be before the line preceding the row range
1921 if start_row > 0 {
1922 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1923 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1924 let insertion_point = display_map
1925 .prev_line_boundary(Point::new(start_row - 1, 0))
1926 .0;
1927
1928 // Don't move lines across excerpts
1929 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1930 let text = buffer
1931 .text_for_range(range_to_move.clone())
1932 .flat_map(|s| s.chars())
1933 .skip(1)
1934 .chain(['\n'])
1935 .collect::<String>();
1936
1937 edits.push((
1938 buffer.anchor_after(range_to_move.start)
1939 ..buffer.anchor_before(range_to_move.end),
1940 String::new(),
1941 ));
1942 let insertion_anchor = buffer.anchor_after(insertion_point);
1943 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1944
1945 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1946
1947 // Move selections up
1948 new_selections.extend(contiguous_row_selections.drain(..).map(
1949 |mut selection| {
1950 selection.start.row -= row_delta;
1951 selection.end.row -= row_delta;
1952 selection
1953 },
1954 ));
1955
1956 // Move folds up
1957 unfold_ranges.push(range_to_move.clone());
1958 for fold in display_map.folds_in_range(
1959 buffer.anchor_before(range_to_move.start)
1960 ..buffer.anchor_after(range_to_move.end),
1961 ) {
1962 let mut start = fold.start.to_point(&buffer);
1963 let mut end = fold.end.to_point(&buffer);
1964 start.row -= row_delta;
1965 end.row -= row_delta;
1966 refold_ranges.push(start..end);
1967 }
1968 }
1969 }
1970
1971 // If we didn't move line(s), preserve the existing selections
1972 new_selections.extend(contiguous_row_selections.drain(..));
1973 }
1974
1975 self.start_transaction(cx);
1976 self.unfold_ranges(unfold_ranges, cx);
1977 self.buffer.update(cx, |buffer, cx| {
1978 for (range, text) in edits {
1979 buffer.edit([range], text, cx);
1980 }
1981 });
1982 self.fold_ranges(refold_ranges, cx);
1983 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1984 self.end_transaction(cx);
1985 }
1986
1987 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1988 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1989 let buffer = self.buffer.read(cx).snapshot(cx);
1990
1991 let mut edits = Vec::new();
1992 let mut unfold_ranges = Vec::new();
1993 let mut refold_ranges = Vec::new();
1994
1995 let selections = self.local_selections::<Point>(cx);
1996 let mut selections = selections.iter().peekable();
1997 let mut contiguous_row_selections = Vec::new();
1998 let mut new_selections = Vec::new();
1999
2000 while let Some(selection) = selections.next() {
2001 // Find all the selections that span a contiguous row range
2002 contiguous_row_selections.push(selection.clone());
2003 let start_row = selection.start.row;
2004 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2005 display_map.next_line_boundary(selection.end).0.row + 1
2006 } else {
2007 selection.end.row
2008 };
2009
2010 while let Some(next_selection) = selections.peek() {
2011 if next_selection.start.row <= end_row {
2012 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2013 display_map.next_line_boundary(next_selection.end).0.row + 1
2014 } else {
2015 next_selection.end.row
2016 };
2017 contiguous_row_selections.push(selections.next().unwrap().clone());
2018 } else {
2019 break;
2020 }
2021 }
2022
2023 // Move the text spanned by the row range to be after the last line of the row range
2024 if end_row <= buffer.max_point().row {
2025 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2026 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2027
2028 // Don't move lines across excerpt boundaries
2029 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2030 let mut text = String::from("\n");
2031 text.extend(buffer.text_for_range(range_to_move.clone()));
2032 text.pop(); // Drop trailing newline
2033 edits.push((
2034 buffer.anchor_after(range_to_move.start)
2035 ..buffer.anchor_before(range_to_move.end),
2036 String::new(),
2037 ));
2038 let insertion_anchor = buffer.anchor_after(insertion_point);
2039 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2040
2041 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2042
2043 // Move selections down
2044 new_selections.extend(contiguous_row_selections.drain(..).map(
2045 |mut selection| {
2046 selection.start.row += row_delta;
2047 selection.end.row += row_delta;
2048 selection
2049 },
2050 ));
2051
2052 // Move folds down
2053 unfold_ranges.push(range_to_move.clone());
2054 for fold in display_map.folds_in_range(
2055 buffer.anchor_before(range_to_move.start)
2056 ..buffer.anchor_after(range_to_move.end),
2057 ) {
2058 let mut start = fold.start.to_point(&buffer);
2059 let mut end = fold.end.to_point(&buffer);
2060 start.row += row_delta;
2061 end.row += row_delta;
2062 refold_ranges.push(start..end);
2063 }
2064 }
2065 }
2066
2067 // If we didn't move line(s), preserve the existing selections
2068 new_selections.extend(contiguous_row_selections.drain(..));
2069 }
2070
2071 self.start_transaction(cx);
2072 self.unfold_ranges(unfold_ranges, cx);
2073 self.buffer.update(cx, |buffer, cx| {
2074 for (range, text) in edits {
2075 buffer.edit([range], text, cx);
2076 }
2077 });
2078 self.fold_ranges(refold_ranges, cx);
2079 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2080 self.end_transaction(cx);
2081 }
2082
2083 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2084 self.start_transaction(cx);
2085 let mut text = String::new();
2086 let mut selections = self.local_selections::<Point>(cx);
2087 let mut clipboard_selections = Vec::with_capacity(selections.len());
2088 {
2089 let buffer = self.buffer.read(cx).read(cx);
2090 let max_point = buffer.max_point();
2091 for selection in &mut selections {
2092 let is_entire_line = selection.is_empty();
2093 if is_entire_line {
2094 selection.start = Point::new(selection.start.row, 0);
2095 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2096 }
2097 let mut len = 0;
2098 for chunk in buffer.text_for_range(selection.start..selection.end) {
2099 text.push_str(chunk);
2100 len += chunk.len();
2101 }
2102 clipboard_selections.push(ClipboardSelection {
2103 len,
2104 is_entire_line,
2105 });
2106 }
2107 }
2108 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2109 self.insert("", cx);
2110 self.end_transaction(cx);
2111
2112 cx.as_mut()
2113 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2114 }
2115
2116 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2117 let selections = self.local_selections::<Point>(cx);
2118 let mut text = String::new();
2119 let mut clipboard_selections = Vec::with_capacity(selections.len());
2120 {
2121 let buffer = self.buffer.read(cx).read(cx);
2122 let max_point = buffer.max_point();
2123 for selection in selections.iter() {
2124 let mut start = selection.start;
2125 let mut end = selection.end;
2126 let is_entire_line = selection.is_empty();
2127 if is_entire_line {
2128 start = Point::new(start.row, 0);
2129 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2130 }
2131 let mut len = 0;
2132 for chunk in buffer.text_for_range(start..end) {
2133 text.push_str(chunk);
2134 len += chunk.len();
2135 }
2136 clipboard_selections.push(ClipboardSelection {
2137 len,
2138 is_entire_line,
2139 });
2140 }
2141 }
2142
2143 cx.as_mut()
2144 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2145 }
2146
2147 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2148 if let Some(item) = cx.as_mut().read_from_clipboard() {
2149 let clipboard_text = item.text();
2150 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2151 let mut selections = self.local_selections::<usize>(cx);
2152 let all_selections_were_entire_line =
2153 clipboard_selections.iter().all(|s| s.is_entire_line);
2154 if clipboard_selections.len() != selections.len() {
2155 clipboard_selections.clear();
2156 }
2157
2158 let mut delta = 0_isize;
2159 let mut start_offset = 0;
2160 for (i, selection) in selections.iter_mut().enumerate() {
2161 let to_insert;
2162 let entire_line;
2163 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2164 let end_offset = start_offset + clipboard_selection.len;
2165 to_insert = &clipboard_text[start_offset..end_offset];
2166 entire_line = clipboard_selection.is_entire_line;
2167 start_offset = end_offset
2168 } else {
2169 to_insert = clipboard_text.as_str();
2170 entire_line = all_selections_were_entire_line;
2171 }
2172
2173 selection.start = (selection.start as isize + delta) as usize;
2174 selection.end = (selection.end as isize + delta) as usize;
2175
2176 self.buffer.update(cx, |buffer, cx| {
2177 // If the corresponding selection was empty when this slice of the
2178 // clipboard text was written, then the entire line containing the
2179 // selection was copied. If this selection is also currently empty,
2180 // then paste the line before the current line of the buffer.
2181 let range = if selection.is_empty() && entire_line {
2182 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2183 let line_start = selection.start - column;
2184 line_start..line_start
2185 } else {
2186 selection.start..selection.end
2187 };
2188
2189 delta += to_insert.len() as isize - range.len() as isize;
2190 buffer.edit([range], to_insert, cx);
2191 selection.start += to_insert.len();
2192 selection.end = selection.start;
2193 });
2194 }
2195 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2196 } else {
2197 self.insert(clipboard_text, cx);
2198 }
2199 }
2200 }
2201
2202 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2203 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2204 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2205 self.set_selections(selections, cx);
2206 }
2207 self.request_autoscroll(Autoscroll::Fit, cx);
2208 }
2209 }
2210
2211 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2212 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2213 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2214 self.set_selections(selections, cx);
2215 }
2216 self.request_autoscroll(Autoscroll::Fit, cx);
2217 }
2218 }
2219
2220 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2221 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2222 let mut selections = self.local_selections::<Point>(cx);
2223 for selection in &mut selections {
2224 let start = selection.start.to_display_point(&display_map);
2225 let end = selection.end.to_display_point(&display_map);
2226
2227 if start != end {
2228 selection.end = selection.start.clone();
2229 } else {
2230 let cursor = movement::left(&display_map, start)
2231 .unwrap()
2232 .to_point(&display_map);
2233 selection.start = cursor.clone();
2234 selection.end = cursor;
2235 }
2236 selection.reversed = false;
2237 selection.goal = SelectionGoal::None;
2238 }
2239 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2240 }
2241
2242 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2243 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2244 let mut selections = self.local_selections::<Point>(cx);
2245 for selection in &mut selections {
2246 let head = selection.head().to_display_point(&display_map);
2247 let cursor = movement::left(&display_map, head)
2248 .unwrap()
2249 .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 move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2257 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2258 let mut selections = self.local_selections::<Point>(cx);
2259 for selection in &mut selections {
2260 let start = selection.start.to_display_point(&display_map);
2261 let end = selection.end.to_display_point(&display_map);
2262
2263 if start != end {
2264 selection.start = selection.end.clone();
2265 } else {
2266 let cursor = movement::right(&display_map, end)
2267 .unwrap()
2268 .to_point(&display_map);
2269 selection.start = cursor;
2270 selection.end = cursor;
2271 }
2272 selection.reversed = false;
2273 selection.goal = SelectionGoal::None;
2274 }
2275 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2276 }
2277
2278 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2279 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2280 let mut selections = self.local_selections::<Point>(cx);
2281 for selection in &mut selections {
2282 let head = selection.head().to_display_point(&display_map);
2283 let cursor = movement::right(&display_map, head)
2284 .unwrap()
2285 .to_point(&display_map);
2286 selection.set_head(cursor);
2287 selection.goal = SelectionGoal::None;
2288 }
2289 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2290 }
2291
2292 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2293 if let Some(completion_state) = &mut self.completion_state {
2294 if completion_state.selected_item > 0 {
2295 completion_state.selected_item -= 1;
2296 completion_state
2297 .list
2298 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2299 }
2300 cx.notify();
2301 return;
2302 }
2303
2304 if matches!(self.mode, EditorMode::SingleLine) {
2305 cx.propagate_action();
2306 return;
2307 }
2308
2309 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2310 let mut selections = self.local_selections::<Point>(cx);
2311 for selection in &mut selections {
2312 let start = selection.start.to_display_point(&display_map);
2313 let end = selection.end.to_display_point(&display_map);
2314 if start != end {
2315 selection.goal = SelectionGoal::None;
2316 }
2317
2318 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2319 let cursor = start.to_point(&display_map);
2320 selection.start = cursor;
2321 selection.end = cursor;
2322 selection.goal = goal;
2323 selection.reversed = false;
2324 }
2325 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2326 }
2327
2328 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2329 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2330 let mut selections = self.local_selections::<Point>(cx);
2331 for selection in &mut selections {
2332 let head = selection.head().to_display_point(&display_map);
2333 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2334 let cursor = head.to_point(&display_map);
2335 selection.set_head(cursor);
2336 selection.goal = goal;
2337 }
2338 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2339 }
2340
2341 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2342 if let Some(completion_state) = &mut self.completion_state {
2343 if completion_state.selected_item + 1 < completion_state.completions.len() {
2344 completion_state.selected_item += 1;
2345 completion_state
2346 .list
2347 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2348 }
2349 cx.notify();
2350 return;
2351 }
2352
2353 if matches!(self.mode, EditorMode::SingleLine) {
2354 cx.propagate_action();
2355 return;
2356 }
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 start = selection.start.to_display_point(&display_map);
2362 let end = selection.end.to_display_point(&display_map);
2363 if start != end {
2364 selection.goal = SelectionGoal::None;
2365 }
2366
2367 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2368 let cursor = start.to_point(&display_map);
2369 selection.start = cursor;
2370 selection.end = cursor;
2371 selection.goal = goal;
2372 selection.reversed = false;
2373 }
2374 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2375 }
2376
2377 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2378 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2379 let mut selections = self.local_selections::<Point>(cx);
2380 for selection in &mut selections {
2381 let head = selection.head().to_display_point(&display_map);
2382 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2383 let cursor = head.to_point(&display_map);
2384 selection.set_head(cursor);
2385 selection.goal = goal;
2386 }
2387 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2388 }
2389
2390 pub fn move_to_previous_word_boundary(
2391 &mut self,
2392 _: &MoveToPreviousWordBoundary,
2393 cx: &mut ViewContext<Self>,
2394 ) {
2395 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2396 let mut selections = self.local_selections::<Point>(cx);
2397 for selection in &mut selections {
2398 let head = selection.head().to_display_point(&display_map);
2399 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2400 selection.start = cursor.clone();
2401 selection.end = cursor;
2402 selection.reversed = false;
2403 selection.goal = SelectionGoal::None;
2404 }
2405 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2406 }
2407
2408 pub fn select_to_previous_word_boundary(
2409 &mut self,
2410 _: &SelectToPreviousWordBoundary,
2411 cx: &mut ViewContext<Self>,
2412 ) {
2413 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2414 let mut selections = self.local_selections::<Point>(cx);
2415 for selection in &mut selections {
2416 let head = selection.head().to_display_point(&display_map);
2417 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2418 selection.set_head(cursor);
2419 selection.goal = SelectionGoal::None;
2420 }
2421 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2422 }
2423
2424 pub fn delete_to_previous_word_boundary(
2425 &mut self,
2426 _: &DeleteToPreviousWordBoundary,
2427 cx: &mut ViewContext<Self>,
2428 ) {
2429 self.start_transaction(cx);
2430 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2431 let mut selections = self.local_selections::<Point>(cx);
2432 for selection in &mut selections {
2433 if selection.is_empty() {
2434 let head = selection.head().to_display_point(&display_map);
2435 let cursor =
2436 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2437 selection.set_head(cursor);
2438 selection.goal = SelectionGoal::None;
2439 }
2440 }
2441 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2442 self.insert("", cx);
2443 self.end_transaction(cx);
2444 }
2445
2446 pub fn move_to_next_word_boundary(
2447 &mut self,
2448 _: &MoveToNextWordBoundary,
2449 cx: &mut ViewContext<Self>,
2450 ) {
2451 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2452 let mut selections = self.local_selections::<Point>(cx);
2453 for selection in &mut selections {
2454 let head = selection.head().to_display_point(&display_map);
2455 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2456 selection.start = cursor;
2457 selection.end = cursor;
2458 selection.reversed = false;
2459 selection.goal = SelectionGoal::None;
2460 }
2461 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2462 }
2463
2464 pub fn select_to_next_word_boundary(
2465 &mut self,
2466 _: &SelectToNextWordBoundary,
2467 cx: &mut ViewContext<Self>,
2468 ) {
2469 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2470 let mut selections = self.local_selections::<Point>(cx);
2471 for selection in &mut selections {
2472 let head = selection.head().to_display_point(&display_map);
2473 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2474 selection.set_head(cursor);
2475 selection.goal = SelectionGoal::None;
2476 }
2477 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2478 }
2479
2480 pub fn delete_to_next_word_boundary(
2481 &mut self,
2482 _: &DeleteToNextWordBoundary,
2483 cx: &mut ViewContext<Self>,
2484 ) {
2485 self.start_transaction(cx);
2486 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2487 let mut selections = self.local_selections::<Point>(cx);
2488 for selection in &mut selections {
2489 if selection.is_empty() {
2490 let head = selection.head().to_display_point(&display_map);
2491 let cursor =
2492 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2493 selection.set_head(cursor);
2494 selection.goal = SelectionGoal::None;
2495 }
2496 }
2497 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2498 self.insert("", cx);
2499 self.end_transaction(cx);
2500 }
2501
2502 pub fn move_to_beginning_of_line(
2503 &mut self,
2504 _: &MoveToBeginningOfLine,
2505 cx: &mut ViewContext<Self>,
2506 ) {
2507 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2508 let mut selections = self.local_selections::<Point>(cx);
2509 for selection in &mut selections {
2510 let head = selection.head().to_display_point(&display_map);
2511 let new_head = movement::line_beginning(&display_map, head, true);
2512 let cursor = new_head.to_point(&display_map);
2513 selection.start = cursor;
2514 selection.end = cursor;
2515 selection.reversed = false;
2516 selection.goal = SelectionGoal::None;
2517 }
2518 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2519 }
2520
2521 pub fn select_to_beginning_of_line(
2522 &mut self,
2523 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2524 cx: &mut ViewContext<Self>,
2525 ) {
2526 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2527 let mut selections = self.local_selections::<Point>(cx);
2528 for selection in &mut selections {
2529 let head = selection.head().to_display_point(&display_map);
2530 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2531 selection.set_head(new_head.to_point(&display_map));
2532 selection.goal = SelectionGoal::None;
2533 }
2534 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2535 }
2536
2537 pub fn delete_to_beginning_of_line(
2538 &mut self,
2539 _: &DeleteToBeginningOfLine,
2540 cx: &mut ViewContext<Self>,
2541 ) {
2542 self.start_transaction(cx);
2543 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2544 self.backspace(&Backspace, cx);
2545 self.end_transaction(cx);
2546 }
2547
2548 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2549 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2550 let mut selections = self.local_selections::<Point>(cx);
2551 {
2552 for selection in &mut selections {
2553 let head = selection.head().to_display_point(&display_map);
2554 let new_head = movement::line_end(&display_map, head);
2555 let anchor = new_head.to_point(&display_map);
2556 selection.start = anchor.clone();
2557 selection.end = anchor;
2558 selection.reversed = false;
2559 selection.goal = SelectionGoal::None;
2560 }
2561 }
2562 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2563 }
2564
2565 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2566 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2567 let mut selections = self.local_selections::<Point>(cx);
2568 for selection in &mut selections {
2569 let head = selection.head().to_display_point(&display_map);
2570 let new_head = movement::line_end(&display_map, head);
2571 selection.set_head(new_head.to_point(&display_map));
2572 selection.goal = SelectionGoal::None;
2573 }
2574 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2575 }
2576
2577 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2578 self.start_transaction(cx);
2579 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2580 self.delete(&Delete, cx);
2581 self.end_transaction(cx);
2582 }
2583
2584 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2585 self.start_transaction(cx);
2586 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2587 self.cut(&Cut, cx);
2588 self.end_transaction(cx);
2589 }
2590
2591 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2592 if matches!(self.mode, EditorMode::SingleLine) {
2593 cx.propagate_action();
2594 return;
2595 }
2596
2597 let selection = Selection {
2598 id: post_inc(&mut self.next_selection_id),
2599 start: 0,
2600 end: 0,
2601 reversed: false,
2602 goal: SelectionGoal::None,
2603 };
2604 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2605 }
2606
2607 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2608 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2609 selection.set_head(Point::zero());
2610 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2611 }
2612
2613 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2614 if matches!(self.mode, EditorMode::SingleLine) {
2615 cx.propagate_action();
2616 return;
2617 }
2618
2619 let cursor = self.buffer.read(cx).read(cx).len();
2620 let selection = Selection {
2621 id: post_inc(&mut self.next_selection_id),
2622 start: cursor,
2623 end: cursor,
2624 reversed: false,
2625 goal: SelectionGoal::None,
2626 };
2627 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2628 }
2629
2630 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2631 self.nav_history = nav_history;
2632 }
2633
2634 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2635 self.nav_history.as_ref()
2636 }
2637
2638 fn push_to_nav_history(
2639 &self,
2640 position: Anchor,
2641 new_position: Option<Point>,
2642 cx: &mut ViewContext<Self>,
2643 ) {
2644 if let Some(nav_history) = &self.nav_history {
2645 let buffer = self.buffer.read(cx).read(cx);
2646 let offset = position.to_offset(&buffer);
2647 let point = position.to_point(&buffer);
2648 drop(buffer);
2649
2650 if let Some(new_position) = new_position {
2651 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2652 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2653 return;
2654 }
2655 }
2656
2657 nav_history.push(Some(NavigationData {
2658 anchor: position,
2659 offset,
2660 }));
2661 }
2662 }
2663
2664 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2665 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2666 selection.set_head(self.buffer.read(cx).read(cx).len());
2667 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2668 }
2669
2670 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2671 let selection = Selection {
2672 id: post_inc(&mut self.next_selection_id),
2673 start: 0,
2674 end: self.buffer.read(cx).read(cx).len(),
2675 reversed: false,
2676 goal: SelectionGoal::None,
2677 };
2678 self.update_selections(vec![selection], None, cx);
2679 }
2680
2681 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2682 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2683 let mut selections = self.local_selections::<Point>(cx);
2684 let max_point = display_map.buffer_snapshot.max_point();
2685 for selection in &mut selections {
2686 let rows = selection.spanned_rows(true, &display_map);
2687 selection.start = Point::new(rows.start, 0);
2688 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2689 selection.reversed = false;
2690 }
2691 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2692 }
2693
2694 pub fn split_selection_into_lines(
2695 &mut self,
2696 _: &SplitSelectionIntoLines,
2697 cx: &mut ViewContext<Self>,
2698 ) {
2699 let mut to_unfold = Vec::new();
2700 let mut new_selections = Vec::new();
2701 {
2702 let selections = self.local_selections::<Point>(cx);
2703 let buffer = self.buffer.read(cx).read(cx);
2704 for selection in selections {
2705 for row in selection.start.row..selection.end.row {
2706 let cursor = Point::new(row, buffer.line_len(row));
2707 new_selections.push(Selection {
2708 id: post_inc(&mut self.next_selection_id),
2709 start: cursor,
2710 end: cursor,
2711 reversed: false,
2712 goal: SelectionGoal::None,
2713 });
2714 }
2715 new_selections.push(Selection {
2716 id: selection.id,
2717 start: selection.end,
2718 end: selection.end,
2719 reversed: false,
2720 goal: SelectionGoal::None,
2721 });
2722 to_unfold.push(selection.start..selection.end);
2723 }
2724 }
2725 self.unfold_ranges(to_unfold, cx);
2726 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2727 }
2728
2729 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2730 self.add_selection(true, cx);
2731 }
2732
2733 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2734 self.add_selection(false, cx);
2735 }
2736
2737 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2738 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2739 let mut selections = self.local_selections::<Point>(cx);
2740 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2741 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2742 let range = oldest_selection.display_range(&display_map).sorted();
2743 let columns = cmp::min(range.start.column(), range.end.column())
2744 ..cmp::max(range.start.column(), range.end.column());
2745
2746 selections.clear();
2747 let mut stack = Vec::new();
2748 for row in range.start.row()..=range.end.row() {
2749 if let Some(selection) = self.build_columnar_selection(
2750 &display_map,
2751 row,
2752 &columns,
2753 oldest_selection.reversed,
2754 ) {
2755 stack.push(selection.id);
2756 selections.push(selection);
2757 }
2758 }
2759
2760 if above {
2761 stack.reverse();
2762 }
2763
2764 AddSelectionsState { above, stack }
2765 });
2766
2767 let last_added_selection = *state.stack.last().unwrap();
2768 let mut new_selections = Vec::new();
2769 if above == state.above {
2770 let end_row = if above {
2771 0
2772 } else {
2773 display_map.max_point().row()
2774 };
2775
2776 'outer: for selection in selections {
2777 if selection.id == last_added_selection {
2778 let range = selection.display_range(&display_map).sorted();
2779 debug_assert_eq!(range.start.row(), range.end.row());
2780 let mut row = range.start.row();
2781 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2782 {
2783 start..end
2784 } else {
2785 cmp::min(range.start.column(), range.end.column())
2786 ..cmp::max(range.start.column(), range.end.column())
2787 };
2788
2789 while row != end_row {
2790 if above {
2791 row -= 1;
2792 } else {
2793 row += 1;
2794 }
2795
2796 if let Some(new_selection) = self.build_columnar_selection(
2797 &display_map,
2798 row,
2799 &columns,
2800 selection.reversed,
2801 ) {
2802 state.stack.push(new_selection.id);
2803 if above {
2804 new_selections.push(new_selection);
2805 new_selections.push(selection);
2806 } else {
2807 new_selections.push(selection);
2808 new_selections.push(new_selection);
2809 }
2810
2811 continue 'outer;
2812 }
2813 }
2814 }
2815
2816 new_selections.push(selection);
2817 }
2818 } else {
2819 new_selections = selections;
2820 new_selections.retain(|s| s.id != last_added_selection);
2821 state.stack.pop();
2822 }
2823
2824 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2825 if state.stack.len() > 1 {
2826 self.add_selections_state = Some(state);
2827 }
2828 }
2829
2830 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2831 let replace_newest = action.0;
2832 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2833 let buffer = &display_map.buffer_snapshot;
2834 let mut selections = self.local_selections::<usize>(cx);
2835 if let Some(mut select_next_state) = self.select_next_state.take() {
2836 let query = &select_next_state.query;
2837 if !select_next_state.done {
2838 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2839 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2840 let mut next_selected_range = None;
2841
2842 let bytes_after_last_selection =
2843 buffer.bytes_in_range(last_selection.end..buffer.len());
2844 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2845 let query_matches = query
2846 .stream_find_iter(bytes_after_last_selection)
2847 .map(|result| (last_selection.end, result))
2848 .chain(
2849 query
2850 .stream_find_iter(bytes_before_first_selection)
2851 .map(|result| (0, result)),
2852 );
2853 for (start_offset, query_match) in query_matches {
2854 let query_match = query_match.unwrap(); // can only fail due to I/O
2855 let offset_range =
2856 start_offset + query_match.start()..start_offset + query_match.end();
2857 let display_range = offset_range.start.to_display_point(&display_map)
2858 ..offset_range.end.to_display_point(&display_map);
2859
2860 if !select_next_state.wordwise
2861 || (!movement::is_inside_word(&display_map, display_range.start)
2862 && !movement::is_inside_word(&display_map, display_range.end))
2863 {
2864 next_selected_range = Some(offset_range);
2865 break;
2866 }
2867 }
2868
2869 if let Some(next_selected_range) = next_selected_range {
2870 if replace_newest {
2871 if let Some(newest_id) =
2872 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2873 {
2874 selections.retain(|s| s.id != newest_id);
2875 }
2876 }
2877 selections.push(Selection {
2878 id: post_inc(&mut self.next_selection_id),
2879 start: next_selected_range.start,
2880 end: next_selected_range.end,
2881 reversed: false,
2882 goal: SelectionGoal::None,
2883 });
2884 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2885 } else {
2886 select_next_state.done = true;
2887 }
2888 }
2889
2890 self.select_next_state = Some(select_next_state);
2891 } else if selections.len() == 1 {
2892 let selection = selections.last_mut().unwrap();
2893 if selection.start == selection.end {
2894 let word_range = movement::surrounding_word(
2895 &display_map,
2896 selection.start.to_display_point(&display_map),
2897 );
2898 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2899 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2900 selection.goal = SelectionGoal::None;
2901 selection.reversed = false;
2902
2903 let query = buffer
2904 .text_for_range(selection.start..selection.end)
2905 .collect::<String>();
2906 let select_state = SelectNextState {
2907 query: AhoCorasick::new_auto_configured(&[query]),
2908 wordwise: true,
2909 done: false,
2910 };
2911 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2912 self.select_next_state = Some(select_state);
2913 } else {
2914 let query = buffer
2915 .text_for_range(selection.start..selection.end)
2916 .collect::<String>();
2917 self.select_next_state = Some(SelectNextState {
2918 query: AhoCorasick::new_auto_configured(&[query]),
2919 wordwise: false,
2920 done: false,
2921 });
2922 self.select_next(action, cx);
2923 }
2924 }
2925 }
2926
2927 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2928 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2929 // as that portion won't be used for detecting if a line is a comment.
2930 let full_comment_prefix =
2931 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2932 prefix.to_string()
2933 } else {
2934 return;
2935 };
2936 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2937 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2938
2939 self.start_transaction(cx);
2940 let mut selections = self.local_selections::<Point>(cx);
2941 let mut all_selection_lines_are_comments = true;
2942 let mut edit_ranges = Vec::new();
2943 let mut last_toggled_row = None;
2944 self.buffer.update(cx, |buffer, cx| {
2945 for selection in &mut selections {
2946 edit_ranges.clear();
2947 let snapshot = buffer.snapshot(cx);
2948
2949 let end_row =
2950 if selection.end.row > selection.start.row && selection.end.column == 0 {
2951 selection.end.row
2952 } else {
2953 selection.end.row + 1
2954 };
2955
2956 for row in selection.start.row..end_row {
2957 // If multiple selections contain a given row, avoid processing that
2958 // row more than once.
2959 if last_toggled_row == Some(row) {
2960 continue;
2961 } else {
2962 last_toggled_row = Some(row);
2963 }
2964
2965 if snapshot.is_line_blank(row) {
2966 continue;
2967 }
2968
2969 let start = Point::new(row, snapshot.indent_column_for_line(row));
2970 let mut line_bytes = snapshot
2971 .bytes_in_range(start..snapshot.max_point())
2972 .flatten()
2973 .copied();
2974
2975 // If this line currently begins with the line comment prefix, then record
2976 // the range containing the prefix.
2977 if all_selection_lines_are_comments
2978 && line_bytes
2979 .by_ref()
2980 .take(comment_prefix.len())
2981 .eq(comment_prefix.bytes())
2982 {
2983 // Include any whitespace that matches the comment prefix.
2984 let matching_whitespace_len = line_bytes
2985 .zip(comment_prefix_whitespace.bytes())
2986 .take_while(|(a, b)| a == b)
2987 .count() as u32;
2988 let end = Point::new(
2989 row,
2990 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2991 );
2992 edit_ranges.push(start..end);
2993 }
2994 // If this line does not begin with the line comment prefix, then record
2995 // the position where the prefix should be inserted.
2996 else {
2997 all_selection_lines_are_comments = false;
2998 edit_ranges.push(start..start);
2999 }
3000 }
3001
3002 if !edit_ranges.is_empty() {
3003 if all_selection_lines_are_comments {
3004 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3005 } else {
3006 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3007 let edit_ranges = edit_ranges.iter().map(|range| {
3008 let position = Point::new(range.start.row, min_column);
3009 position..position
3010 });
3011 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3012 }
3013 }
3014 }
3015 });
3016
3017 self.update_selections(
3018 self.local_selections::<usize>(cx),
3019 Some(Autoscroll::Fit),
3020 cx,
3021 );
3022 self.end_transaction(cx);
3023 }
3024
3025 pub fn select_larger_syntax_node(
3026 &mut self,
3027 _: &SelectLargerSyntaxNode,
3028 cx: &mut ViewContext<Self>,
3029 ) {
3030 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3031 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3032 let buffer = self.buffer.read(cx).snapshot(cx);
3033
3034 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3035 let mut selected_larger_node = false;
3036 let new_selections = old_selections
3037 .iter()
3038 .map(|selection| {
3039 let old_range = selection.start..selection.end;
3040 let mut new_range = old_range.clone();
3041 while let Some(containing_range) =
3042 buffer.range_for_syntax_ancestor(new_range.clone())
3043 {
3044 new_range = containing_range;
3045 if !display_map.intersects_fold(new_range.start)
3046 && !display_map.intersects_fold(new_range.end)
3047 {
3048 break;
3049 }
3050 }
3051
3052 selected_larger_node |= new_range != old_range;
3053 Selection {
3054 id: selection.id,
3055 start: new_range.start,
3056 end: new_range.end,
3057 goal: SelectionGoal::None,
3058 reversed: selection.reversed,
3059 }
3060 })
3061 .collect::<Vec<_>>();
3062
3063 if selected_larger_node {
3064 stack.push(old_selections);
3065 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3066 }
3067 self.select_larger_syntax_node_stack = stack;
3068 }
3069
3070 pub fn select_smaller_syntax_node(
3071 &mut self,
3072 _: &SelectSmallerSyntaxNode,
3073 cx: &mut ViewContext<Self>,
3074 ) {
3075 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3076 if let Some(selections) = stack.pop() {
3077 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3078 }
3079 self.select_larger_syntax_node_stack = stack;
3080 }
3081
3082 pub fn move_to_enclosing_bracket(
3083 &mut self,
3084 _: &MoveToEnclosingBracket,
3085 cx: &mut ViewContext<Self>,
3086 ) {
3087 let mut selections = self.local_selections::<usize>(cx);
3088 let buffer = self.buffer.read(cx).snapshot(cx);
3089 for selection in &mut selections {
3090 if let Some((open_range, close_range)) =
3091 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3092 {
3093 let close_range = close_range.to_inclusive();
3094 let destination = if close_range.contains(&selection.start)
3095 && close_range.contains(&selection.end)
3096 {
3097 open_range.end
3098 } else {
3099 *close_range.start()
3100 };
3101 selection.start = destination;
3102 selection.end = destination;
3103 }
3104 }
3105
3106 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3107 }
3108
3109 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3110 let buffer = self.buffer.read(cx).snapshot(cx);
3111 let selection = self.newest_selection::<usize>(&buffer);
3112 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3113 active_diagnostics
3114 .primary_range
3115 .to_offset(&buffer)
3116 .to_inclusive()
3117 });
3118 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3119 if active_primary_range.contains(&selection.head()) {
3120 *active_primary_range.end()
3121 } else {
3122 selection.head()
3123 }
3124 } else {
3125 selection.head()
3126 };
3127
3128 loop {
3129 let next_group = buffer
3130 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3131 .find_map(|entry| {
3132 if entry.diagnostic.is_primary
3133 && !entry.range.is_empty()
3134 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3135 {
3136 Some((entry.range, entry.diagnostic.group_id))
3137 } else {
3138 None
3139 }
3140 });
3141
3142 if let Some((primary_range, group_id)) = next_group {
3143 self.activate_diagnostics(group_id, cx);
3144 self.update_selections(
3145 vec![Selection {
3146 id: selection.id,
3147 start: primary_range.start,
3148 end: primary_range.start,
3149 reversed: false,
3150 goal: SelectionGoal::None,
3151 }],
3152 Some(Autoscroll::Center),
3153 cx,
3154 );
3155 break;
3156 } else if search_start == 0 {
3157 break;
3158 } else {
3159 // Cycle around to the start of the buffer.
3160 search_start = 0;
3161 }
3162 }
3163 }
3164
3165 pub fn go_to_definition(
3166 workspace: &mut Workspace,
3167 _: &GoToDefinition,
3168 cx: &mut ViewContext<Workspace>,
3169 ) {
3170 let active_item = workspace.active_item(cx);
3171 let editor_handle = if let Some(editor) = active_item
3172 .as_ref()
3173 .and_then(|item| item.act_as::<Self>(cx))
3174 {
3175 editor
3176 } else {
3177 return;
3178 };
3179
3180 let editor = editor_handle.read(cx);
3181 let buffer = editor.buffer.read(cx);
3182 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3183 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3184 let definitions = workspace
3185 .project()
3186 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3187 cx.spawn(|workspace, mut cx| async move {
3188 let definitions = definitions.await?;
3189 workspace.update(&mut cx, |workspace, cx| {
3190 for definition in definitions {
3191 let range = definition
3192 .target_range
3193 .to_offset(definition.target_buffer.read(cx));
3194 let target_editor_handle = workspace
3195 .open_item(BufferItemHandle(definition.target_buffer), cx)
3196 .downcast::<Self>()
3197 .unwrap();
3198
3199 target_editor_handle.update(cx, |target_editor, cx| {
3200 // When selecting a definition in a different buffer, disable the nav history
3201 // to avoid creating a history entry at the previous cursor location.
3202 let disabled_history = if editor_handle == target_editor_handle {
3203 None
3204 } else {
3205 target_editor.nav_history.take()
3206 };
3207 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3208 if disabled_history.is_some() {
3209 target_editor.nav_history = disabled_history;
3210 }
3211 });
3212 }
3213 });
3214
3215 Ok::<(), anyhow::Error>(())
3216 })
3217 .detach_and_log_err(cx);
3218 }
3219
3220 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3221 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3222 let buffer = self.buffer.read(cx).snapshot(cx);
3223 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3224 let is_valid = buffer
3225 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3226 .any(|entry| {
3227 entry.diagnostic.is_primary
3228 && !entry.range.is_empty()
3229 && entry.range.start == primary_range_start
3230 && entry.diagnostic.message == active_diagnostics.primary_message
3231 });
3232
3233 if is_valid != active_diagnostics.is_valid {
3234 active_diagnostics.is_valid = is_valid;
3235 let mut new_styles = HashMap::default();
3236 for (block_id, diagnostic) in &active_diagnostics.blocks {
3237 new_styles.insert(
3238 *block_id,
3239 diagnostic_block_renderer(
3240 diagnostic.clone(),
3241 is_valid,
3242 self.build_settings.clone(),
3243 ),
3244 );
3245 }
3246 self.display_map
3247 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3248 }
3249 }
3250 }
3251
3252 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3253 self.dismiss_diagnostics(cx);
3254 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3255 let buffer = self.buffer.read(cx).snapshot(cx);
3256
3257 let mut primary_range = None;
3258 let mut primary_message = None;
3259 let mut group_end = Point::zero();
3260 let diagnostic_group = buffer
3261 .diagnostic_group::<Point>(group_id)
3262 .map(|entry| {
3263 if entry.range.end > group_end {
3264 group_end = entry.range.end;
3265 }
3266 if entry.diagnostic.is_primary {
3267 primary_range = Some(entry.range.clone());
3268 primary_message = Some(entry.diagnostic.message.clone());
3269 }
3270 entry
3271 })
3272 .collect::<Vec<_>>();
3273 let primary_range = primary_range.unwrap();
3274 let primary_message = primary_message.unwrap();
3275 let primary_range =
3276 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3277
3278 let blocks = display_map
3279 .insert_blocks(
3280 diagnostic_group.iter().map(|entry| {
3281 let build_settings = self.build_settings.clone();
3282 let diagnostic = entry.diagnostic.clone();
3283 let message_height = diagnostic.message.lines().count() as u8;
3284
3285 BlockProperties {
3286 position: buffer.anchor_after(entry.range.start),
3287 height: message_height,
3288 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3289 disposition: BlockDisposition::Below,
3290 }
3291 }),
3292 cx,
3293 )
3294 .into_iter()
3295 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3296 .collect();
3297
3298 Some(ActiveDiagnosticGroup {
3299 primary_range,
3300 primary_message,
3301 blocks,
3302 is_valid: true,
3303 })
3304 });
3305 }
3306
3307 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3308 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3309 self.display_map.update(cx, |display_map, cx| {
3310 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3311 });
3312 cx.notify();
3313 }
3314 }
3315
3316 fn build_columnar_selection(
3317 &mut self,
3318 display_map: &DisplaySnapshot,
3319 row: u32,
3320 columns: &Range<u32>,
3321 reversed: bool,
3322 ) -> Option<Selection<Point>> {
3323 let is_empty = columns.start == columns.end;
3324 let line_len = display_map.line_len(row);
3325 if columns.start < line_len || (is_empty && columns.start == line_len) {
3326 let start = DisplayPoint::new(row, columns.start);
3327 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3328 Some(Selection {
3329 id: post_inc(&mut self.next_selection_id),
3330 start: start.to_point(display_map),
3331 end: end.to_point(display_map),
3332 reversed,
3333 goal: SelectionGoal::ColumnRange {
3334 start: columns.start,
3335 end: columns.end,
3336 },
3337 })
3338 } else {
3339 None
3340 }
3341 }
3342
3343 pub fn local_selections_in_range(
3344 &self,
3345 range: Range<Anchor>,
3346 display_map: &DisplaySnapshot,
3347 ) -> Vec<Selection<Point>> {
3348 let buffer = &display_map.buffer_snapshot;
3349
3350 let start_ix = match self
3351 .selections
3352 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3353 {
3354 Ok(ix) | Err(ix) => ix,
3355 };
3356 let end_ix = match self
3357 .selections
3358 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3359 {
3360 Ok(ix) => ix + 1,
3361 Err(ix) => ix,
3362 };
3363
3364 fn point_selection(
3365 selection: &Selection<Anchor>,
3366 buffer: &MultiBufferSnapshot,
3367 ) -> Selection<Point> {
3368 let start = selection.start.to_point(&buffer);
3369 let end = selection.end.to_point(&buffer);
3370 Selection {
3371 id: selection.id,
3372 start,
3373 end,
3374 reversed: selection.reversed,
3375 goal: selection.goal,
3376 }
3377 }
3378
3379 self.selections[start_ix..end_ix]
3380 .iter()
3381 .chain(
3382 self.pending_selection
3383 .as_ref()
3384 .map(|pending| &pending.selection),
3385 )
3386 .map(|s| point_selection(s, &buffer))
3387 .collect()
3388 }
3389
3390 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3391 where
3392 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3393 {
3394 let buffer = self.buffer.read(cx).snapshot(cx);
3395 let mut selections = self
3396 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3397 .peekable();
3398
3399 let mut pending_selection = self.pending_selection::<D>(&buffer);
3400
3401 iter::from_fn(move || {
3402 if let Some(pending) = pending_selection.as_mut() {
3403 while let Some(next_selection) = selections.peek() {
3404 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3405 let next_selection = selections.next().unwrap();
3406 if next_selection.start < pending.start {
3407 pending.start = next_selection.start;
3408 }
3409 if next_selection.end > pending.end {
3410 pending.end = next_selection.end;
3411 }
3412 } else if next_selection.end < pending.start {
3413 return selections.next();
3414 } else {
3415 break;
3416 }
3417 }
3418
3419 pending_selection.take()
3420 } else {
3421 selections.next()
3422 }
3423 })
3424 .collect()
3425 }
3426
3427 fn resolve_selections<'a, D, I>(
3428 &self,
3429 selections: I,
3430 snapshot: &MultiBufferSnapshot,
3431 ) -> impl 'a + Iterator<Item = Selection<D>>
3432 where
3433 D: TextDimension + Ord + Sub<D, Output = D>,
3434 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3435 {
3436 let (to_summarize, selections) = selections.into_iter().tee();
3437 let mut summaries = snapshot
3438 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3439 .into_iter();
3440 selections.map(move |s| Selection {
3441 id: s.id,
3442 start: summaries.next().unwrap(),
3443 end: summaries.next().unwrap(),
3444 reversed: s.reversed,
3445 goal: s.goal,
3446 })
3447 }
3448
3449 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3450 &self,
3451 snapshot: &MultiBufferSnapshot,
3452 ) -> Option<Selection<D>> {
3453 self.pending_selection
3454 .as_ref()
3455 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3456 }
3457
3458 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3459 &self,
3460 selection: &Selection<Anchor>,
3461 buffer: &MultiBufferSnapshot,
3462 ) -> Selection<D> {
3463 Selection {
3464 id: selection.id,
3465 start: selection.start.summary::<D>(&buffer),
3466 end: selection.end.summary::<D>(&buffer),
3467 reversed: selection.reversed,
3468 goal: selection.goal,
3469 }
3470 }
3471
3472 fn selection_count<'a>(&self) -> usize {
3473 let mut count = self.selections.len();
3474 if self.pending_selection.is_some() {
3475 count += 1;
3476 }
3477 count
3478 }
3479
3480 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3481 &self,
3482 snapshot: &MultiBufferSnapshot,
3483 ) -> Selection<D> {
3484 self.selections
3485 .iter()
3486 .min_by_key(|s| s.id)
3487 .map(|selection| self.resolve_selection(selection, snapshot))
3488 .or_else(|| self.pending_selection(snapshot))
3489 .unwrap()
3490 }
3491
3492 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3493 &self,
3494 snapshot: &MultiBufferSnapshot,
3495 ) -> Selection<D> {
3496 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3497 }
3498
3499 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3500 self.pending_selection
3501 .as_ref()
3502 .map(|s| &s.selection)
3503 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3504 }
3505
3506 pub fn update_selections<T>(
3507 &mut self,
3508 mut selections: Vec<Selection<T>>,
3509 autoscroll: Option<Autoscroll>,
3510 cx: &mut ViewContext<Self>,
3511 ) where
3512 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3513 {
3514 let buffer = self.buffer.read(cx).snapshot(cx);
3515 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3516 selections.sort_unstable_by_key(|s| s.start);
3517
3518 // Merge overlapping selections.
3519 let mut i = 1;
3520 while i < selections.len() {
3521 if selections[i - 1].end >= selections[i].start {
3522 let removed = selections.remove(i);
3523 if removed.start < selections[i - 1].start {
3524 selections[i - 1].start = removed.start;
3525 }
3526 if removed.end > selections[i - 1].end {
3527 selections[i - 1].end = removed.end;
3528 }
3529 } else {
3530 i += 1;
3531 }
3532 }
3533
3534 self.pending_selection = None;
3535 self.add_selections_state = None;
3536 self.select_next_state = None;
3537 self.select_larger_syntax_node_stack.clear();
3538 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3539 let all_selections_inside_autoclose_ranges =
3540 if selections.len() == autoclose_pair.ranges.len() {
3541 selections
3542 .iter()
3543 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3544 .all(|(selection, autoclose_range)| {
3545 let head = selection.head().to_point(&buffer);
3546 autoclose_range.start <= head && autoclose_range.end >= head
3547 })
3548 } else {
3549 false
3550 };
3551
3552 if all_selections_inside_autoclose_ranges {
3553 break;
3554 } else {
3555 self.autoclose_stack.pop();
3556 }
3557 }
3558
3559 if let Some(old_cursor_position) = old_cursor_position {
3560 let new_cursor_position = selections
3561 .iter()
3562 .max_by_key(|s| s.id)
3563 .map(|s| s.head().to_point(&buffer));
3564 if new_cursor_position.is_some() {
3565 self.push_to_nav_history(old_cursor_position, new_cursor_position, cx);
3566 }
3567 }
3568
3569 if let Some(autoscroll) = autoscroll {
3570 self.request_autoscroll(autoscroll, cx);
3571 }
3572 self.pause_cursor_blinking(cx);
3573
3574 self.set_selections(
3575 Arc::from_iter(selections.into_iter().map(|selection| {
3576 let end_bias = if selection.end > selection.start {
3577 Bias::Left
3578 } else {
3579 Bias::Right
3580 };
3581 Selection {
3582 id: selection.id,
3583 start: buffer.anchor_after(selection.start),
3584 end: buffer.anchor_at(selection.end, end_bias),
3585 reversed: selection.reversed,
3586 goal: selection.goal,
3587 }
3588 })),
3589 cx,
3590 );
3591 }
3592
3593 /// Compute new ranges for any selections that were located in excerpts that have
3594 /// since been removed.
3595 ///
3596 /// Returns a `HashMap` indicating which selections whose former head position
3597 /// was no longer present. The keys of the map are selection ids. The values are
3598 /// the id of the new excerpt where the head of the selection has been moved.
3599 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3600 let snapshot = self.buffer.read(cx).read(cx);
3601 let anchors_with_status = snapshot.refresh_anchors(
3602 self.selections
3603 .iter()
3604 .flat_map(|selection| [&selection.start, &selection.end]),
3605 );
3606 let offsets =
3607 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3608 let offsets = offsets.chunks(2);
3609 let statuses = anchors_with_status
3610 .chunks(2)
3611 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3612
3613 let mut selections_with_lost_position = HashMap::default();
3614 let new_selections = offsets
3615 .zip(statuses)
3616 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3617 let selection = &self.selections[selection_ix];
3618 let kept_head = if selection.reversed {
3619 kept_start
3620 } else {
3621 kept_end
3622 };
3623 if !kept_head {
3624 selections_with_lost_position
3625 .insert(selection.id, selection.head().excerpt_id.clone());
3626 }
3627
3628 Selection {
3629 id: selection.id,
3630 start: offsets[0],
3631 end: offsets[1],
3632 reversed: selection.reversed,
3633 goal: selection.goal,
3634 }
3635 })
3636 .collect();
3637 drop(snapshot);
3638 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3639 selections_with_lost_position
3640 }
3641
3642 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3643 self.selections = selections;
3644 if self.focused {
3645 self.buffer.update(cx, |buffer, cx| {
3646 buffer.set_active_selections(&self.selections, cx)
3647 });
3648 }
3649 cx.emit(Event::SelectionsChanged);
3650 }
3651
3652 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3653 self.autoscroll_request = Some(autoscroll);
3654 cx.notify();
3655 }
3656
3657 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3658 self.start_transaction_at(Instant::now(), cx);
3659 }
3660
3661 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3662 self.end_selection(cx);
3663 if let Some(tx_id) = self
3664 .buffer
3665 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3666 {
3667 self.selection_history
3668 .insert(tx_id, (self.selections.clone(), None));
3669 }
3670 }
3671
3672 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3673 self.end_transaction_at(Instant::now(), cx);
3674 }
3675
3676 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3677 if let Some(tx_id) = self
3678 .buffer
3679 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3680 {
3681 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3682 *end_selections = Some(self.selections.clone());
3683 } else {
3684 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3685 }
3686 }
3687 }
3688
3689 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3690 log::info!("Editor::page_up");
3691 }
3692
3693 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3694 log::info!("Editor::page_down");
3695 }
3696
3697 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3698 let mut fold_ranges = Vec::new();
3699
3700 let selections = self.local_selections::<Point>(cx);
3701 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3702 for selection in selections {
3703 let range = selection.display_range(&display_map).sorted();
3704 let buffer_start_row = range.start.to_point(&display_map).row;
3705
3706 for row in (0..=range.end.row()).rev() {
3707 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3708 let fold_range = self.foldable_range_for_line(&display_map, row);
3709 if fold_range.end.row >= buffer_start_row {
3710 fold_ranges.push(fold_range);
3711 if row <= range.start.row() {
3712 break;
3713 }
3714 }
3715 }
3716 }
3717 }
3718
3719 self.fold_ranges(fold_ranges, cx);
3720 }
3721
3722 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3723 let selections = self.local_selections::<Point>(cx);
3724 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3725 let buffer = &display_map.buffer_snapshot;
3726 let ranges = selections
3727 .iter()
3728 .map(|s| {
3729 let range = s.display_range(&display_map).sorted();
3730 let mut start = range.start.to_point(&display_map);
3731 let mut end = range.end.to_point(&display_map);
3732 start.column = 0;
3733 end.column = buffer.line_len(end.row);
3734 start..end
3735 })
3736 .collect::<Vec<_>>();
3737 self.unfold_ranges(ranges, cx);
3738 }
3739
3740 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3741 let max_point = display_map.max_point();
3742 if display_row >= max_point.row() {
3743 false
3744 } else {
3745 let (start_indent, is_blank) = display_map.line_indent(display_row);
3746 if is_blank {
3747 false
3748 } else {
3749 for display_row in display_row + 1..=max_point.row() {
3750 let (indent, is_blank) = display_map.line_indent(display_row);
3751 if !is_blank {
3752 return indent > start_indent;
3753 }
3754 }
3755 false
3756 }
3757 }
3758 }
3759
3760 fn foldable_range_for_line(
3761 &self,
3762 display_map: &DisplaySnapshot,
3763 start_row: u32,
3764 ) -> Range<Point> {
3765 let max_point = display_map.max_point();
3766
3767 let (start_indent, _) = display_map.line_indent(start_row);
3768 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3769 let mut end = None;
3770 for row in start_row + 1..=max_point.row() {
3771 let (indent, is_blank) = display_map.line_indent(row);
3772 if !is_blank && indent <= start_indent {
3773 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3774 break;
3775 }
3776 }
3777
3778 let end = end.unwrap_or(max_point);
3779 return start.to_point(display_map)..end.to_point(display_map);
3780 }
3781
3782 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3783 let selections = self.local_selections::<Point>(cx);
3784 let ranges = selections.into_iter().map(|s| s.start..s.end);
3785 self.fold_ranges(ranges, cx);
3786 }
3787
3788 fn fold_ranges<T: ToOffset>(
3789 &mut self,
3790 ranges: impl IntoIterator<Item = Range<T>>,
3791 cx: &mut ViewContext<Self>,
3792 ) {
3793 let mut ranges = ranges.into_iter().peekable();
3794 if ranges.peek().is_some() {
3795 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3796 self.request_autoscroll(Autoscroll::Fit, cx);
3797 cx.notify();
3798 }
3799 }
3800
3801 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3802 if !ranges.is_empty() {
3803 self.display_map
3804 .update(cx, |map, cx| map.unfold(ranges, cx));
3805 self.request_autoscroll(Autoscroll::Fit, cx);
3806 cx.notify();
3807 }
3808 }
3809
3810 pub fn insert_blocks(
3811 &mut self,
3812 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3813 cx: &mut ViewContext<Self>,
3814 ) -> Vec<BlockId> {
3815 let blocks = self
3816 .display_map
3817 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3818 self.request_autoscroll(Autoscroll::Fit, cx);
3819 blocks
3820 }
3821
3822 pub fn replace_blocks(
3823 &mut self,
3824 blocks: HashMap<BlockId, RenderBlock>,
3825 cx: &mut ViewContext<Self>,
3826 ) {
3827 self.display_map
3828 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3829 self.request_autoscroll(Autoscroll::Fit, cx);
3830 }
3831
3832 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3833 self.display_map.update(cx, |display_map, cx| {
3834 display_map.remove_blocks(block_ids, cx)
3835 });
3836 }
3837
3838 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3839 self.display_map
3840 .update(cx, |map, cx| map.snapshot(cx))
3841 .longest_row()
3842 }
3843
3844 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3845 self.display_map
3846 .update(cx, |map, cx| map.snapshot(cx))
3847 .max_point()
3848 }
3849
3850 pub fn text(&self, cx: &AppContext) -> String {
3851 self.buffer.read(cx).read(cx).text()
3852 }
3853
3854 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3855 self.display_map
3856 .update(cx, |map, cx| map.snapshot(cx))
3857 .text()
3858 }
3859
3860 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3861 self.display_map
3862 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3863 }
3864
3865 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
3866 self.highlighted_rows = rows;
3867 }
3868
3869 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
3870 self.highlighted_rows.clone()
3871 }
3872
3873 pub fn highlight_ranges<T: 'static>(
3874 &mut self,
3875 ranges: Vec<Range<Anchor>>,
3876 color: Color,
3877 cx: &mut ViewContext<Self>,
3878 ) {
3879 self.highlighted_ranges
3880 .insert(TypeId::of::<T>(), (color, ranges));
3881 cx.notify();
3882 }
3883
3884 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
3885 self.highlighted_ranges.remove(&TypeId::of::<T>());
3886 cx.notify();
3887 }
3888
3889 #[cfg(feature = "test-support")]
3890 pub fn all_highlighted_ranges(
3891 &mut self,
3892 cx: &mut ViewContext<Self>,
3893 ) -> Vec<(Range<DisplayPoint>, Color)> {
3894 let snapshot = self.snapshot(cx);
3895 let buffer = &snapshot.buffer_snapshot;
3896 let start = buffer.anchor_before(0);
3897 let end = buffer.anchor_after(buffer.len());
3898 self.highlighted_ranges_in_range(start..end, &snapshot)
3899 }
3900
3901 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
3902 self.highlighted_ranges
3903 .get(&TypeId::of::<T>())
3904 .map(|(color, ranges)| (*color, ranges.as_slice()))
3905 }
3906
3907 pub fn highlighted_ranges_in_range(
3908 &self,
3909 search_range: Range<Anchor>,
3910 display_snapshot: &DisplaySnapshot,
3911 ) -> Vec<(Range<DisplayPoint>, Color)> {
3912 let mut results = Vec::new();
3913 let buffer = &display_snapshot.buffer_snapshot;
3914 for (color, ranges) in self.highlighted_ranges.values() {
3915 let start_ix = match ranges.binary_search_by(|probe| {
3916 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
3917 if cmp.is_gt() {
3918 Ordering::Greater
3919 } else {
3920 Ordering::Less
3921 }
3922 }) {
3923 Ok(i) | Err(i) => i,
3924 };
3925 for range in &ranges[start_ix..] {
3926 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
3927 break;
3928 }
3929 let start = range
3930 .start
3931 .to_point(buffer)
3932 .to_display_point(display_snapshot);
3933 let end = range
3934 .end
3935 .to_point(buffer)
3936 .to_display_point(display_snapshot);
3937 results.push((start..end, *color))
3938 }
3939 }
3940 results
3941 }
3942
3943 fn next_blink_epoch(&mut self) -> usize {
3944 self.blink_epoch += 1;
3945 self.blink_epoch
3946 }
3947
3948 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3949 if !self.focused {
3950 return;
3951 }
3952
3953 self.show_local_cursors = true;
3954 cx.notify();
3955
3956 let epoch = self.next_blink_epoch();
3957 cx.spawn(|this, mut cx| {
3958 let this = this.downgrade();
3959 async move {
3960 Timer::after(CURSOR_BLINK_INTERVAL).await;
3961 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3962 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3963 }
3964 }
3965 })
3966 .detach();
3967 }
3968
3969 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3970 if epoch == self.blink_epoch {
3971 self.blinking_paused = false;
3972 self.blink_cursors(epoch, cx);
3973 }
3974 }
3975
3976 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3977 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3978 self.show_local_cursors = !self.show_local_cursors;
3979 cx.notify();
3980
3981 let epoch = self.next_blink_epoch();
3982 cx.spawn(|this, mut cx| {
3983 let this = this.downgrade();
3984 async move {
3985 Timer::after(CURSOR_BLINK_INTERVAL).await;
3986 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3987 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3988 }
3989 }
3990 })
3991 .detach();
3992 }
3993 }
3994
3995 pub fn show_local_cursors(&self) -> bool {
3996 self.show_local_cursors
3997 }
3998
3999 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4000 self.refresh_active_diagnostics(cx);
4001 cx.notify();
4002 }
4003
4004 fn on_buffer_event(
4005 &mut self,
4006 _: ModelHandle<MultiBuffer>,
4007 event: &language::Event,
4008 cx: &mut ViewContext<Self>,
4009 ) {
4010 match event {
4011 language::Event::Edited => cx.emit(Event::Edited),
4012 language::Event::Dirtied => cx.emit(Event::Dirtied),
4013 language::Event::Saved => cx.emit(Event::Saved),
4014 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4015 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4016 language::Event::Closed => cx.emit(Event::Closed),
4017 _ => {}
4018 }
4019 }
4020
4021 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4022 cx.notify();
4023 }
4024}
4025
4026impl EditorSnapshot {
4027 pub fn is_focused(&self) -> bool {
4028 self.is_focused
4029 }
4030
4031 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4032 self.placeholder_text.as_ref()
4033 }
4034
4035 pub fn scroll_position(&self) -> Vector2F {
4036 compute_scroll_position(
4037 &self.display_snapshot,
4038 self.scroll_position,
4039 &self.scroll_top_anchor,
4040 )
4041 }
4042}
4043
4044impl Deref for EditorSnapshot {
4045 type Target = DisplaySnapshot;
4046
4047 fn deref(&self) -> &Self::Target {
4048 &self.display_snapshot
4049 }
4050}
4051
4052impl EditorSettings {
4053 #[cfg(any(test, feature = "test-support"))]
4054 pub fn test(cx: &AppContext) -> Self {
4055 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4056
4057 Self {
4058 tab_size: 4,
4059 soft_wrap: SoftWrap::None,
4060 style: {
4061 let font_cache: &gpui::FontCache = cx.font_cache();
4062 let font_family_name = Arc::from("Monaco");
4063 let font_properties = Default::default();
4064 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4065 let font_id = font_cache
4066 .select_font(font_family_id, &font_properties)
4067 .unwrap();
4068 let text = gpui::fonts::TextStyle {
4069 font_family_name,
4070 font_family_id,
4071 font_id,
4072 font_size: 14.,
4073 color: gpui::color::Color::from_u32(0xff0000ff),
4074 font_properties,
4075 underline: None,
4076 };
4077 let default_diagnostic_style = DiagnosticStyle {
4078 message: text.clone().into(),
4079 header: Default::default(),
4080 text_scale_factor: 1.,
4081 };
4082 EditorStyle {
4083 text: text.clone(),
4084 placeholder_text: None,
4085 background: Default::default(),
4086 gutter_background: Default::default(),
4087 gutter_padding_factor: 2.,
4088 active_line_background: Default::default(),
4089 highlighted_line_background: Default::default(),
4090 line_number: Default::default(),
4091 line_number_active: Default::default(),
4092 selection: Default::default(),
4093 guest_selections: Default::default(),
4094 syntax: Default::default(),
4095 diagnostic_path_header: DiagnosticPathHeader {
4096 container: Default::default(),
4097 filename: ContainedText {
4098 container: Default::default(),
4099 text: text.clone(),
4100 },
4101 path: ContainedText {
4102 container: Default::default(),
4103 text: text.clone(),
4104 },
4105 text_scale_factor: 1.,
4106 },
4107 diagnostic_header: DiagnosticHeader {
4108 container: Default::default(),
4109 message: ContainedLabel {
4110 container: Default::default(),
4111 label: text.clone().into(),
4112 },
4113 code: ContainedText {
4114 container: Default::default(),
4115 text: text.clone(),
4116 },
4117 icon_width_factor: 1.,
4118 text_scale_factor: 1.,
4119 },
4120 error_diagnostic: default_diagnostic_style.clone(),
4121 invalid_error_diagnostic: default_diagnostic_style.clone(),
4122 warning_diagnostic: default_diagnostic_style.clone(),
4123 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4124 information_diagnostic: default_diagnostic_style.clone(),
4125 invalid_information_diagnostic: default_diagnostic_style.clone(),
4126 hint_diagnostic: default_diagnostic_style.clone(),
4127 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4128 autocomplete: Default::default(),
4129 }
4130 },
4131 }
4132 }
4133}
4134
4135fn compute_scroll_position(
4136 snapshot: &DisplaySnapshot,
4137 mut scroll_position: Vector2F,
4138 scroll_top_anchor: &Option<Anchor>,
4139) -> Vector2F {
4140 if let Some(anchor) = scroll_top_anchor {
4141 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4142 scroll_position.set_y(scroll_top + scroll_position.y());
4143 } else {
4144 scroll_position.set_y(0.);
4145 }
4146 scroll_position
4147}
4148
4149#[derive(Copy, Clone)]
4150pub enum Event {
4151 Activate,
4152 Edited,
4153 Blurred,
4154 Dirtied,
4155 Saved,
4156 TitleChanged,
4157 SelectionsChanged,
4158 Closed,
4159}
4160
4161impl Entity for Editor {
4162 type Event = Event;
4163}
4164
4165impl View for Editor {
4166 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4167 let settings = (self.build_settings)(cx);
4168 self.display_map.update(cx, |map, cx| {
4169 map.set_font(
4170 settings.style.text.font_id,
4171 settings.style.text.font_size,
4172 cx,
4173 )
4174 });
4175 EditorElement::new(self.handle.clone(), settings).boxed()
4176 }
4177
4178 fn ui_name() -> &'static str {
4179 "Editor"
4180 }
4181
4182 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4183 self.focused = true;
4184 self.blink_cursors(self.blink_epoch, cx);
4185 self.buffer.update(cx, |buffer, cx| {
4186 buffer.avoid_grouping_next_transaction(cx);
4187 buffer.set_active_selections(&self.selections, cx)
4188 });
4189 }
4190
4191 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4192 self.focused = false;
4193 self.show_local_cursors = false;
4194 self.buffer
4195 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4196 cx.emit(Event::Blurred);
4197 cx.notify();
4198 }
4199
4200 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4201 let mut cx = Self::default_keymap_context();
4202 let mode = match self.mode {
4203 EditorMode::SingleLine => "single_line",
4204 EditorMode::AutoHeight { .. } => "auto_height",
4205 EditorMode::Full => "full",
4206 };
4207 cx.map.insert("mode".into(), mode.into());
4208 if self.completion_state.is_some() {
4209 cx.set.insert("completing".into());
4210 }
4211 cx
4212 }
4213}
4214
4215impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4216 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4217 let start = self.start.to_point(buffer);
4218 let end = self.end.to_point(buffer);
4219 if self.reversed {
4220 end..start
4221 } else {
4222 start..end
4223 }
4224 }
4225
4226 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4227 let start = self.start.to_offset(buffer);
4228 let end = self.end.to_offset(buffer);
4229 if self.reversed {
4230 end..start
4231 } else {
4232 start..end
4233 }
4234 }
4235
4236 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4237 let start = self
4238 .start
4239 .to_point(&map.buffer_snapshot)
4240 .to_display_point(map);
4241 let end = self
4242 .end
4243 .to_point(&map.buffer_snapshot)
4244 .to_display_point(map);
4245 if self.reversed {
4246 end..start
4247 } else {
4248 start..end
4249 }
4250 }
4251
4252 fn spanned_rows(
4253 &self,
4254 include_end_if_at_line_start: bool,
4255 map: &DisplaySnapshot,
4256 ) -> Range<u32> {
4257 let start = self.start.to_point(&map.buffer_snapshot);
4258 let mut end = self.end.to_point(&map.buffer_snapshot);
4259 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4260 end.row -= 1;
4261 }
4262
4263 let buffer_start = map.prev_line_boundary(start).0;
4264 let buffer_end = map.next_line_boundary(end).0;
4265 buffer_start.row..buffer_end.row + 1
4266 }
4267}
4268
4269pub fn diagnostic_block_renderer(
4270 diagnostic: Diagnostic,
4271 is_valid: bool,
4272 build_settings: BuildSettings,
4273) -> RenderBlock {
4274 let mut highlighted_lines = Vec::new();
4275 for line in diagnostic.message.lines() {
4276 highlighted_lines.push(highlight_diagnostic_message(line));
4277 }
4278
4279 Arc::new(move |cx: &BlockContext| {
4280 let settings = build_settings(cx);
4281 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4282 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4283 Flex::column()
4284 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4285 Label::new(
4286 line.clone(),
4287 style.message.clone().with_font_size(font_size),
4288 )
4289 .with_highlights(highlights.clone())
4290 .contained()
4291 .with_margin_left(cx.anchor_x)
4292 .boxed()
4293 }))
4294 .aligned()
4295 .left()
4296 .boxed()
4297 })
4298}
4299
4300pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4301 let mut message_without_backticks = String::new();
4302 let mut prev_offset = 0;
4303 let mut inside_block = false;
4304 let mut highlights = Vec::new();
4305 for (match_ix, (offset, _)) in message
4306 .match_indices('`')
4307 .chain([(message.len(), "")])
4308 .enumerate()
4309 {
4310 message_without_backticks.push_str(&message[prev_offset..offset]);
4311 if inside_block {
4312 highlights.extend(prev_offset - match_ix..offset - match_ix);
4313 }
4314
4315 inside_block = !inside_block;
4316 prev_offset = offset + 1;
4317 }
4318
4319 (message_without_backticks, highlights)
4320}
4321
4322pub fn diagnostic_style(
4323 severity: DiagnosticSeverity,
4324 valid: bool,
4325 style: &EditorStyle,
4326) -> DiagnosticStyle {
4327 match (severity, valid) {
4328 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4329 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4330 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4331 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4332 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4333 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4334 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4335 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4336 _ => DiagnosticStyle {
4337 message: style.text.clone().into(),
4338 header: Default::default(),
4339 text_scale_factor: 1.,
4340 },
4341 }
4342}
4343
4344pub fn settings_builder(
4345 buffer: WeakModelHandle<MultiBuffer>,
4346 settings: watch::Receiver<workspace::Settings>,
4347) -> BuildSettings {
4348 Arc::new(move |cx| {
4349 let settings = settings.borrow();
4350 let font_cache = cx.font_cache();
4351 let font_family_id = settings.buffer_font_family;
4352 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4353 let font_properties = Default::default();
4354 let font_id = font_cache
4355 .select_font(font_family_id, &font_properties)
4356 .unwrap();
4357 let font_size = settings.buffer_font_size;
4358
4359 let mut theme = settings.theme.editor.clone();
4360 theme.text = TextStyle {
4361 color: theme.text.color,
4362 font_family_name,
4363 font_family_id,
4364 font_id,
4365 font_size,
4366 font_properties,
4367 underline: None,
4368 };
4369 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4370 let soft_wrap = match settings.soft_wrap(language) {
4371 workspace::settings::SoftWrap::None => SoftWrap::None,
4372 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4373 workspace::settings::SoftWrap::PreferredLineLength => {
4374 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4375 }
4376 };
4377
4378 EditorSettings {
4379 tab_size: settings.tab_size,
4380 soft_wrap,
4381 style: theme,
4382 }
4383 })
4384}
4385
4386pub fn char_kind(c: char) -> CharKind {
4387 if c == '\n' {
4388 CharKind::Newline
4389 } else if c.is_whitespace() {
4390 CharKind::Whitespace
4391 } else if c.is_alphanumeric() || c == '_' {
4392 CharKind::Word
4393 } else {
4394 CharKind::Punctuation
4395 }
4396}
4397
4398#[cfg(test)]
4399mod tests {
4400 use super::*;
4401 use language::LanguageConfig;
4402 use std::{cell::RefCell, rc::Rc, time::Instant};
4403 use text::Point;
4404 use unindent::Unindent;
4405 use util::test::sample_text;
4406
4407 #[gpui::test]
4408 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4409 let mut now = Instant::now();
4410 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4411 let group_interval = buffer.read(cx).transaction_group_interval();
4412 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4413 let settings = EditorSettings::test(cx);
4414 let (_, editor) = cx.add_window(Default::default(), |cx| {
4415 build_editor(buffer.clone(), settings, cx)
4416 });
4417
4418 editor.update(cx, |editor, cx| {
4419 editor.start_transaction_at(now, cx);
4420 editor.select_ranges([2..4], None, cx);
4421 editor.insert("cd", cx);
4422 editor.end_transaction_at(now, cx);
4423 assert_eq!(editor.text(cx), "12cd56");
4424 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4425
4426 editor.start_transaction_at(now, cx);
4427 editor.select_ranges([4..5], None, cx);
4428 editor.insert("e", cx);
4429 editor.end_transaction_at(now, cx);
4430 assert_eq!(editor.text(cx), "12cde6");
4431 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4432
4433 now += group_interval + Duration::from_millis(1);
4434 editor.select_ranges([2..2], None, cx);
4435
4436 // Simulate an edit in another editor
4437 buffer.update(cx, |buffer, cx| {
4438 buffer.start_transaction_at(now, cx);
4439 buffer.edit([0..1], "a", cx);
4440 buffer.edit([1..1], "b", cx);
4441 buffer.end_transaction_at(now, cx);
4442 });
4443
4444 assert_eq!(editor.text(cx), "ab2cde6");
4445 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4446
4447 // Last transaction happened past the group interval in a different editor.
4448 // Undo it individually and don't restore selections.
4449 editor.undo(&Undo, cx);
4450 assert_eq!(editor.text(cx), "12cde6");
4451 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4452
4453 // First two transactions happened within the group interval in this editor.
4454 // Undo them together and restore selections.
4455 editor.undo(&Undo, cx);
4456 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4457 assert_eq!(editor.text(cx), "123456");
4458 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4459
4460 // Redo the first two transactions together.
4461 editor.redo(&Redo, cx);
4462 assert_eq!(editor.text(cx), "12cde6");
4463 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4464
4465 // Redo the last transaction on its own.
4466 editor.redo(&Redo, cx);
4467 assert_eq!(editor.text(cx), "ab2cde6");
4468 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4469
4470 // Test empty transactions.
4471 editor.start_transaction_at(now, cx);
4472 editor.end_transaction_at(now, cx);
4473 editor.undo(&Undo, cx);
4474 assert_eq!(editor.text(cx), "12cde6");
4475 });
4476 }
4477
4478 #[gpui::test]
4479 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4480 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4481 let settings = EditorSettings::test(cx);
4482 let (_, editor) =
4483 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4484
4485 editor.update(cx, |view, cx| {
4486 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4487 });
4488
4489 assert_eq!(
4490 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4491 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4492 );
4493
4494 editor.update(cx, |view, cx| {
4495 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4496 });
4497
4498 assert_eq!(
4499 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4500 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4501 );
4502
4503 editor.update(cx, |view, cx| {
4504 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4505 });
4506
4507 assert_eq!(
4508 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4509 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4510 );
4511
4512 editor.update(cx, |view, cx| {
4513 view.end_selection(cx);
4514 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4515 });
4516
4517 assert_eq!(
4518 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4519 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4520 );
4521
4522 editor.update(cx, |view, cx| {
4523 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4524 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4525 });
4526
4527 assert_eq!(
4528 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4529 [
4530 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4531 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4532 ]
4533 );
4534
4535 editor.update(cx, |view, cx| {
4536 view.end_selection(cx);
4537 });
4538
4539 assert_eq!(
4540 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4541 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4542 );
4543 }
4544
4545 #[gpui::test]
4546 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4547 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4548 let settings = EditorSettings::test(cx);
4549 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4550
4551 view.update(cx, |view, cx| {
4552 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4553 assert_eq!(
4554 view.selected_display_ranges(cx),
4555 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4556 );
4557 });
4558
4559 view.update(cx, |view, cx| {
4560 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4561 assert_eq!(
4562 view.selected_display_ranges(cx),
4563 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4564 );
4565 });
4566
4567 view.update(cx, |view, cx| {
4568 view.cancel(&Cancel, cx);
4569 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4570 assert_eq!(
4571 view.selected_display_ranges(cx),
4572 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4573 );
4574 });
4575 }
4576
4577 #[gpui::test]
4578 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4579 cx.add_window(Default::default(), |cx| {
4580 use workspace::ItemView;
4581 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4582 let settings = EditorSettings::test(&cx);
4583 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4584 let mut editor = build_editor(buffer.clone(), settings, cx);
4585 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4586
4587 // Move the cursor a small distance.
4588 // Nothing is added to the navigation history.
4589 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4590 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4591 assert!(nav_history.borrow_mut().pop_backward().is_none());
4592
4593 // Move the cursor a large distance.
4594 // The history can jump back to the previous position.
4595 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4596 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4597 editor.navigate(nav_entry.data.unwrap(), cx);
4598 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4599 assert_eq!(
4600 editor.selected_display_ranges(cx),
4601 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4602 );
4603
4604 // Move the cursor a small distance via the mouse.
4605 // Nothing is added to the navigation history.
4606 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4607 editor.end_selection(cx);
4608 assert_eq!(
4609 editor.selected_display_ranges(cx),
4610 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4611 );
4612 assert!(nav_history.borrow_mut().pop_backward().is_none());
4613
4614 // Move the cursor a large distance via the mouse.
4615 // The history can jump back to the previous position.
4616 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
4617 editor.end_selection(cx);
4618 assert_eq!(
4619 editor.selected_display_ranges(cx),
4620 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
4621 );
4622 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4623 editor.navigate(nav_entry.data.unwrap(), cx);
4624 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4625 assert_eq!(
4626 editor.selected_display_ranges(cx),
4627 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4628 );
4629
4630 editor
4631 });
4632 }
4633
4634 #[gpui::test]
4635 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4636 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4637 let settings = EditorSettings::test(cx);
4638 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4639
4640 view.update(cx, |view, cx| {
4641 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4642 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4643 view.end_selection(cx);
4644
4645 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4646 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4647 view.end_selection(cx);
4648 assert_eq!(
4649 view.selected_display_ranges(cx),
4650 [
4651 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4652 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4653 ]
4654 );
4655 });
4656
4657 view.update(cx, |view, cx| {
4658 view.cancel(&Cancel, cx);
4659 assert_eq!(
4660 view.selected_display_ranges(cx),
4661 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4662 );
4663 });
4664
4665 view.update(cx, |view, cx| {
4666 view.cancel(&Cancel, cx);
4667 assert_eq!(
4668 view.selected_display_ranges(cx),
4669 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4670 );
4671 });
4672 }
4673
4674 #[gpui::test]
4675 fn test_fold(cx: &mut gpui::MutableAppContext) {
4676 let buffer = MultiBuffer::build_simple(
4677 &"
4678 impl Foo {
4679 // Hello!
4680
4681 fn a() {
4682 1
4683 }
4684
4685 fn b() {
4686 2
4687 }
4688
4689 fn c() {
4690 3
4691 }
4692 }
4693 "
4694 .unindent(),
4695 cx,
4696 );
4697 let settings = EditorSettings::test(&cx);
4698 let (_, view) = cx.add_window(Default::default(), |cx| {
4699 build_editor(buffer.clone(), settings, cx)
4700 });
4701
4702 view.update(cx, |view, cx| {
4703 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
4704 view.fold(&Fold, cx);
4705 assert_eq!(
4706 view.display_text(cx),
4707 "
4708 impl Foo {
4709 // Hello!
4710
4711 fn a() {
4712 1
4713 }
4714
4715 fn b() {…
4716 }
4717
4718 fn c() {…
4719 }
4720 }
4721 "
4722 .unindent(),
4723 );
4724
4725 view.fold(&Fold, cx);
4726 assert_eq!(
4727 view.display_text(cx),
4728 "
4729 impl Foo {…
4730 }
4731 "
4732 .unindent(),
4733 );
4734
4735 view.unfold(&Unfold, cx);
4736 assert_eq!(
4737 view.display_text(cx),
4738 "
4739 impl Foo {
4740 // Hello!
4741
4742 fn a() {
4743 1
4744 }
4745
4746 fn b() {…
4747 }
4748
4749 fn c() {…
4750 }
4751 }
4752 "
4753 .unindent(),
4754 );
4755
4756 view.unfold(&Unfold, cx);
4757 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4758 });
4759 }
4760
4761 #[gpui::test]
4762 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4763 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4764 let settings = EditorSettings::test(&cx);
4765 let (_, view) = cx.add_window(Default::default(), |cx| {
4766 build_editor(buffer.clone(), settings, cx)
4767 });
4768
4769 buffer.update(cx, |buffer, cx| {
4770 buffer.edit(
4771 vec![
4772 Point::new(1, 0)..Point::new(1, 0),
4773 Point::new(1, 1)..Point::new(1, 1),
4774 ],
4775 "\t",
4776 cx,
4777 );
4778 });
4779
4780 view.update(cx, |view, cx| {
4781 assert_eq!(
4782 view.selected_display_ranges(cx),
4783 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4784 );
4785
4786 view.move_down(&MoveDown, cx);
4787 assert_eq!(
4788 view.selected_display_ranges(cx),
4789 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4790 );
4791
4792 view.move_right(&MoveRight, cx);
4793 assert_eq!(
4794 view.selected_display_ranges(cx),
4795 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4796 );
4797
4798 view.move_left(&MoveLeft, cx);
4799 assert_eq!(
4800 view.selected_display_ranges(cx),
4801 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4802 );
4803
4804 view.move_up(&MoveUp, cx);
4805 assert_eq!(
4806 view.selected_display_ranges(cx),
4807 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4808 );
4809
4810 view.move_to_end(&MoveToEnd, cx);
4811 assert_eq!(
4812 view.selected_display_ranges(cx),
4813 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4814 );
4815
4816 view.move_to_beginning(&MoveToBeginning, cx);
4817 assert_eq!(
4818 view.selected_display_ranges(cx),
4819 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4820 );
4821
4822 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
4823 view.select_to_beginning(&SelectToBeginning, cx);
4824 assert_eq!(
4825 view.selected_display_ranges(cx),
4826 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4827 );
4828
4829 view.select_to_end(&SelectToEnd, cx);
4830 assert_eq!(
4831 view.selected_display_ranges(cx),
4832 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4833 );
4834 });
4835 }
4836
4837 #[gpui::test]
4838 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4839 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4840 let settings = EditorSettings::test(&cx);
4841 let (_, view) = cx.add_window(Default::default(), |cx| {
4842 build_editor(buffer.clone(), settings, cx)
4843 });
4844
4845 assert_eq!('ⓐ'.len_utf8(), 3);
4846 assert_eq!('α'.len_utf8(), 2);
4847
4848 view.update(cx, |view, cx| {
4849 view.fold_ranges(
4850 vec![
4851 Point::new(0, 6)..Point::new(0, 12),
4852 Point::new(1, 2)..Point::new(1, 4),
4853 Point::new(2, 4)..Point::new(2, 8),
4854 ],
4855 cx,
4856 );
4857 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4858
4859 view.move_right(&MoveRight, cx);
4860 assert_eq!(
4861 view.selected_display_ranges(cx),
4862 &[empty_range(0, "ⓐ".len())]
4863 );
4864 view.move_right(&MoveRight, cx);
4865 assert_eq!(
4866 view.selected_display_ranges(cx),
4867 &[empty_range(0, "ⓐⓑ".len())]
4868 );
4869 view.move_right(&MoveRight, cx);
4870 assert_eq!(
4871 view.selected_display_ranges(cx),
4872 &[empty_range(0, "ⓐⓑ…".len())]
4873 );
4874
4875 view.move_down(&MoveDown, cx);
4876 assert_eq!(
4877 view.selected_display_ranges(cx),
4878 &[empty_range(1, "ab…".len())]
4879 );
4880 view.move_left(&MoveLeft, cx);
4881 assert_eq!(
4882 view.selected_display_ranges(cx),
4883 &[empty_range(1, "ab".len())]
4884 );
4885 view.move_left(&MoveLeft, cx);
4886 assert_eq!(
4887 view.selected_display_ranges(cx),
4888 &[empty_range(1, "a".len())]
4889 );
4890
4891 view.move_down(&MoveDown, cx);
4892 assert_eq!(
4893 view.selected_display_ranges(cx),
4894 &[empty_range(2, "α".len())]
4895 );
4896 view.move_right(&MoveRight, cx);
4897 assert_eq!(
4898 view.selected_display_ranges(cx),
4899 &[empty_range(2, "αβ".len())]
4900 );
4901 view.move_right(&MoveRight, cx);
4902 assert_eq!(
4903 view.selected_display_ranges(cx),
4904 &[empty_range(2, "αβ…".len())]
4905 );
4906 view.move_right(&MoveRight, cx);
4907 assert_eq!(
4908 view.selected_display_ranges(cx),
4909 &[empty_range(2, "αβ…ε".len())]
4910 );
4911
4912 view.move_up(&MoveUp, cx);
4913 assert_eq!(
4914 view.selected_display_ranges(cx),
4915 &[empty_range(1, "ab…e".len())]
4916 );
4917 view.move_up(&MoveUp, cx);
4918 assert_eq!(
4919 view.selected_display_ranges(cx),
4920 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4921 );
4922 view.move_left(&MoveLeft, cx);
4923 assert_eq!(
4924 view.selected_display_ranges(cx),
4925 &[empty_range(0, "ⓐⓑ…".len())]
4926 );
4927 view.move_left(&MoveLeft, cx);
4928 assert_eq!(
4929 view.selected_display_ranges(cx),
4930 &[empty_range(0, "ⓐⓑ".len())]
4931 );
4932 view.move_left(&MoveLeft, cx);
4933 assert_eq!(
4934 view.selected_display_ranges(cx),
4935 &[empty_range(0, "ⓐ".len())]
4936 );
4937 });
4938 }
4939
4940 #[gpui::test]
4941 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4942 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4943 let settings = EditorSettings::test(&cx);
4944 let (_, view) = cx.add_window(Default::default(), |cx| {
4945 build_editor(buffer.clone(), settings, cx)
4946 });
4947 view.update(cx, |view, cx| {
4948 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
4949 view.move_down(&MoveDown, cx);
4950 assert_eq!(
4951 view.selected_display_ranges(cx),
4952 &[empty_range(1, "abcd".len())]
4953 );
4954
4955 view.move_down(&MoveDown, cx);
4956 assert_eq!(
4957 view.selected_display_ranges(cx),
4958 &[empty_range(2, "αβγ".len())]
4959 );
4960
4961 view.move_down(&MoveDown, cx);
4962 assert_eq!(
4963 view.selected_display_ranges(cx),
4964 &[empty_range(3, "abcd".len())]
4965 );
4966
4967 view.move_down(&MoveDown, cx);
4968 assert_eq!(
4969 view.selected_display_ranges(cx),
4970 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4971 );
4972
4973 view.move_up(&MoveUp, cx);
4974 assert_eq!(
4975 view.selected_display_ranges(cx),
4976 &[empty_range(3, "abcd".len())]
4977 );
4978
4979 view.move_up(&MoveUp, cx);
4980 assert_eq!(
4981 view.selected_display_ranges(cx),
4982 &[empty_range(2, "αβγ".len())]
4983 );
4984 });
4985 }
4986
4987 #[gpui::test]
4988 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4989 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4990 let settings = EditorSettings::test(&cx);
4991 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4992 view.update(cx, |view, cx| {
4993 view.select_display_ranges(
4994 &[
4995 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4996 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4997 ],
4998 cx,
4999 );
5000 });
5001
5002 view.update(cx, |view, cx| {
5003 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5004 assert_eq!(
5005 view.selected_display_ranges(cx),
5006 &[
5007 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5008 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5009 ]
5010 );
5011 });
5012
5013 view.update(cx, |view, cx| {
5014 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5015 assert_eq!(
5016 view.selected_display_ranges(cx),
5017 &[
5018 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5019 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5020 ]
5021 );
5022 });
5023
5024 view.update(cx, |view, cx| {
5025 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5026 assert_eq!(
5027 view.selected_display_ranges(cx),
5028 &[
5029 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5030 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5031 ]
5032 );
5033 });
5034
5035 view.update(cx, |view, cx| {
5036 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5037 assert_eq!(
5038 view.selected_display_ranges(cx),
5039 &[
5040 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5041 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5042 ]
5043 );
5044 });
5045
5046 // Moving to the end of line again is a no-op.
5047 view.update(cx, |view, cx| {
5048 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5049 assert_eq!(
5050 view.selected_display_ranges(cx),
5051 &[
5052 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5053 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5054 ]
5055 );
5056 });
5057
5058 view.update(cx, |view, cx| {
5059 view.move_left(&MoveLeft, cx);
5060 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5061 assert_eq!(
5062 view.selected_display_ranges(cx),
5063 &[
5064 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5065 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5066 ]
5067 );
5068 });
5069
5070 view.update(cx, |view, cx| {
5071 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5072 assert_eq!(
5073 view.selected_display_ranges(cx),
5074 &[
5075 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5076 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5077 ]
5078 );
5079 });
5080
5081 view.update(cx, |view, cx| {
5082 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5083 assert_eq!(
5084 view.selected_display_ranges(cx),
5085 &[
5086 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5087 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5088 ]
5089 );
5090 });
5091
5092 view.update(cx, |view, cx| {
5093 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5094 assert_eq!(
5095 view.selected_display_ranges(cx),
5096 &[
5097 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5098 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5099 ]
5100 );
5101 });
5102
5103 view.update(cx, |view, cx| {
5104 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5105 assert_eq!(view.display_text(cx), "ab\n de");
5106 assert_eq!(
5107 view.selected_display_ranges(cx),
5108 &[
5109 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5110 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5111 ]
5112 );
5113 });
5114
5115 view.update(cx, |view, cx| {
5116 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5117 assert_eq!(view.display_text(cx), "\n");
5118 assert_eq!(
5119 view.selected_display_ranges(cx),
5120 &[
5121 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5122 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5123 ]
5124 );
5125 });
5126 }
5127
5128 #[gpui::test]
5129 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5130 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5131 let settings = EditorSettings::test(&cx);
5132 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5133 view.update(cx, |view, cx| {
5134 view.select_display_ranges(
5135 &[
5136 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5137 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5138 ],
5139 cx,
5140 );
5141 });
5142
5143 view.update(cx, |view, cx| {
5144 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5145 assert_eq!(
5146 view.selected_display_ranges(cx),
5147 &[
5148 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5149 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5150 ]
5151 );
5152 });
5153
5154 view.update(cx, |view, cx| {
5155 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5156 assert_eq!(
5157 view.selected_display_ranges(cx),
5158 &[
5159 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5160 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5161 ]
5162 );
5163 });
5164
5165 view.update(cx, |view, cx| {
5166 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5167 assert_eq!(
5168 view.selected_display_ranges(cx),
5169 &[
5170 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5171 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5172 ]
5173 );
5174 });
5175
5176 view.update(cx, |view, cx| {
5177 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5178 assert_eq!(
5179 view.selected_display_ranges(cx),
5180 &[
5181 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5182 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5183 ]
5184 );
5185 });
5186
5187 view.update(cx, |view, cx| {
5188 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5189 assert_eq!(
5190 view.selected_display_ranges(cx),
5191 &[
5192 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5193 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5194 ]
5195 );
5196 });
5197
5198 view.update(cx, |view, cx| {
5199 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5200 assert_eq!(
5201 view.selected_display_ranges(cx),
5202 &[
5203 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5204 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5205 ]
5206 );
5207 });
5208
5209 view.update(cx, |view, cx| {
5210 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5211 assert_eq!(
5212 view.selected_display_ranges(cx),
5213 &[
5214 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5215 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5216 ]
5217 );
5218 });
5219
5220 view.update(cx, |view, cx| {
5221 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5222 assert_eq!(
5223 view.selected_display_ranges(cx),
5224 &[
5225 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5226 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5227 ]
5228 );
5229 });
5230
5231 view.update(cx, |view, cx| {
5232 view.move_right(&MoveRight, cx);
5233 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5234 assert_eq!(
5235 view.selected_display_ranges(cx),
5236 &[
5237 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5238 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5239 ]
5240 );
5241 });
5242
5243 view.update(cx, |view, cx| {
5244 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5245 assert_eq!(
5246 view.selected_display_ranges(cx),
5247 &[
5248 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5249 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5250 ]
5251 );
5252 });
5253
5254 view.update(cx, |view, cx| {
5255 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5256 assert_eq!(
5257 view.selected_display_ranges(cx),
5258 &[
5259 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5260 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5261 ]
5262 );
5263 });
5264 }
5265
5266 #[gpui::test]
5267 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5268 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5269 let settings = EditorSettings::test(&cx);
5270 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5271
5272 view.update(cx, |view, cx| {
5273 view.set_wrap_width(Some(140.), cx);
5274 assert_eq!(
5275 view.display_text(cx),
5276 "use one::{\n two::three::\n four::five\n};"
5277 );
5278
5279 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5280
5281 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5282 assert_eq!(
5283 view.selected_display_ranges(cx),
5284 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5285 );
5286
5287 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5288 assert_eq!(
5289 view.selected_display_ranges(cx),
5290 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5291 );
5292
5293 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5294 assert_eq!(
5295 view.selected_display_ranges(cx),
5296 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5297 );
5298
5299 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5300 assert_eq!(
5301 view.selected_display_ranges(cx),
5302 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5303 );
5304
5305 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5306 assert_eq!(
5307 view.selected_display_ranges(cx),
5308 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5309 );
5310
5311 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5312 assert_eq!(
5313 view.selected_display_ranges(cx),
5314 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5315 );
5316 });
5317 }
5318
5319 #[gpui::test]
5320 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5321 let buffer = MultiBuffer::build_simple("one two three four", cx);
5322 let settings = EditorSettings::test(&cx);
5323 let (_, view) = cx.add_window(Default::default(), |cx| {
5324 build_editor(buffer.clone(), settings, cx)
5325 });
5326
5327 view.update(cx, |view, cx| {
5328 view.select_display_ranges(
5329 &[
5330 // an empty selection - the preceding word fragment is deleted
5331 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5332 // characters selected - they are deleted
5333 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5334 ],
5335 cx,
5336 );
5337 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5338 });
5339
5340 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5341
5342 view.update(cx, |view, cx| {
5343 view.select_display_ranges(
5344 &[
5345 // an empty selection - the following word fragment is deleted
5346 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5347 // characters selected - they are deleted
5348 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5349 ],
5350 cx,
5351 );
5352 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5353 });
5354
5355 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5356 }
5357
5358 #[gpui::test]
5359 fn test_newline(cx: &mut gpui::MutableAppContext) {
5360 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5361 let settings = EditorSettings::test(&cx);
5362 let (_, view) = cx.add_window(Default::default(), |cx| {
5363 build_editor(buffer.clone(), settings, cx)
5364 });
5365
5366 view.update(cx, |view, cx| {
5367 view.select_display_ranges(
5368 &[
5369 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5370 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5371 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5372 ],
5373 cx,
5374 );
5375
5376 view.newline(&Newline, cx);
5377 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5378 });
5379 }
5380
5381 #[gpui::test]
5382 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5383 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5384 let settings = EditorSettings::test(&cx);
5385 let (_, view) = cx.add_window(Default::default(), |cx| {
5386 build_editor(buffer.clone(), settings, cx)
5387 });
5388
5389 view.update(cx, |view, cx| {
5390 // two selections on the same line
5391 view.select_display_ranges(
5392 &[
5393 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5394 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5395 ],
5396 cx,
5397 );
5398
5399 // indent from mid-tabstop to full tabstop
5400 view.tab(&Tab, cx);
5401 assert_eq!(view.text(cx), " one two\nthree\n four");
5402 assert_eq!(
5403 view.selected_display_ranges(cx),
5404 &[
5405 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5406 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5407 ]
5408 );
5409
5410 // outdent from 1 tabstop to 0 tabstops
5411 view.outdent(&Outdent, cx);
5412 assert_eq!(view.text(cx), "one two\nthree\n four");
5413 assert_eq!(
5414 view.selected_display_ranges(cx),
5415 &[
5416 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5417 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5418 ]
5419 );
5420
5421 // select across line ending
5422 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5423
5424 // indent and outdent affect only the preceding line
5425 view.tab(&Tab, cx);
5426 assert_eq!(view.text(cx), "one two\n three\n four");
5427 assert_eq!(
5428 view.selected_display_ranges(cx),
5429 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5430 );
5431 view.outdent(&Outdent, cx);
5432 assert_eq!(view.text(cx), "one two\nthree\n four");
5433 assert_eq!(
5434 view.selected_display_ranges(cx),
5435 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5436 );
5437
5438 // Ensure that indenting/outdenting works when the cursor is at column 0.
5439 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5440 view.tab(&Tab, cx);
5441 assert_eq!(view.text(cx), "one two\n three\n four");
5442 assert_eq!(
5443 view.selected_display_ranges(cx),
5444 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5445 );
5446
5447 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5448 view.outdent(&Outdent, cx);
5449 assert_eq!(view.text(cx), "one two\nthree\n four");
5450 assert_eq!(
5451 view.selected_display_ranges(cx),
5452 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5453 );
5454 });
5455 }
5456
5457 #[gpui::test]
5458 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5459 let buffer =
5460 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5461 let settings = EditorSettings::test(&cx);
5462 let (_, view) = cx.add_window(Default::default(), |cx| {
5463 build_editor(buffer.clone(), settings, cx)
5464 });
5465
5466 view.update(cx, |view, cx| {
5467 view.select_display_ranges(
5468 &[
5469 // an empty selection - the preceding character is deleted
5470 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5471 // one character selected - it is deleted
5472 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5473 // a line suffix selected - it is deleted
5474 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5475 ],
5476 cx,
5477 );
5478 view.backspace(&Backspace, cx);
5479 });
5480
5481 assert_eq!(
5482 buffer.read(cx).read(cx).text(),
5483 "oe two three\nfou five six\nseven ten\n"
5484 );
5485 }
5486
5487 #[gpui::test]
5488 fn test_delete(cx: &mut gpui::MutableAppContext) {
5489 let buffer =
5490 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5491 let settings = EditorSettings::test(&cx);
5492 let (_, view) = cx.add_window(Default::default(), |cx| {
5493 build_editor(buffer.clone(), settings, cx)
5494 });
5495
5496 view.update(cx, |view, cx| {
5497 view.select_display_ranges(
5498 &[
5499 // an empty selection - the following character is deleted
5500 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5501 // one character selected - it is deleted
5502 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5503 // a line suffix selected - it is deleted
5504 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5505 ],
5506 cx,
5507 );
5508 view.delete(&Delete, cx);
5509 });
5510
5511 assert_eq!(
5512 buffer.read(cx).read(cx).text(),
5513 "on two three\nfou five six\nseven ten\n"
5514 );
5515 }
5516
5517 #[gpui::test]
5518 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5519 let settings = EditorSettings::test(&cx);
5520 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5521 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5522 view.update(cx, |view, cx| {
5523 view.select_display_ranges(
5524 &[
5525 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5526 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5527 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5528 ],
5529 cx,
5530 );
5531 view.delete_line(&DeleteLine, cx);
5532 assert_eq!(view.display_text(cx), "ghi");
5533 assert_eq!(
5534 view.selected_display_ranges(cx),
5535 vec![
5536 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5537 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5538 ]
5539 );
5540 });
5541
5542 let settings = EditorSettings::test(&cx);
5543 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5544 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5545 view.update(cx, |view, cx| {
5546 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5547 view.delete_line(&DeleteLine, cx);
5548 assert_eq!(view.display_text(cx), "ghi\n");
5549 assert_eq!(
5550 view.selected_display_ranges(cx),
5551 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5552 );
5553 });
5554 }
5555
5556 #[gpui::test]
5557 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5558 let settings = EditorSettings::test(&cx);
5559 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5560 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5561 view.update(cx, |view, cx| {
5562 view.select_display_ranges(
5563 &[
5564 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5565 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5566 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5567 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5568 ],
5569 cx,
5570 );
5571 view.duplicate_line(&DuplicateLine, cx);
5572 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5573 assert_eq!(
5574 view.selected_display_ranges(cx),
5575 vec![
5576 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5577 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5578 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5579 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5580 ]
5581 );
5582 });
5583
5584 let settings = EditorSettings::test(&cx);
5585 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5586 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5587 view.update(cx, |view, cx| {
5588 view.select_display_ranges(
5589 &[
5590 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5591 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5592 ],
5593 cx,
5594 );
5595 view.duplicate_line(&DuplicateLine, cx);
5596 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5597 assert_eq!(
5598 view.selected_display_ranges(cx),
5599 vec![
5600 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5601 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5602 ]
5603 );
5604 });
5605 }
5606
5607 #[gpui::test]
5608 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5609 let settings = EditorSettings::test(&cx);
5610 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5611 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5612 view.update(cx, |view, cx| {
5613 view.fold_ranges(
5614 vec![
5615 Point::new(0, 2)..Point::new(1, 2),
5616 Point::new(2, 3)..Point::new(4, 1),
5617 Point::new(7, 0)..Point::new(8, 4),
5618 ],
5619 cx,
5620 );
5621 view.select_display_ranges(
5622 &[
5623 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5624 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5625 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5626 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5627 ],
5628 cx,
5629 );
5630 assert_eq!(
5631 view.display_text(cx),
5632 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5633 );
5634
5635 view.move_line_up(&MoveLineUp, cx);
5636 assert_eq!(
5637 view.display_text(cx),
5638 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5639 );
5640 assert_eq!(
5641 view.selected_display_ranges(cx),
5642 vec![
5643 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5644 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5645 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5646 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5647 ]
5648 );
5649 });
5650
5651 view.update(cx, |view, cx| {
5652 view.move_line_down(&MoveLineDown, cx);
5653 assert_eq!(
5654 view.display_text(cx),
5655 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5656 );
5657 assert_eq!(
5658 view.selected_display_ranges(cx),
5659 vec![
5660 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5661 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5662 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5663 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5664 ]
5665 );
5666 });
5667
5668 view.update(cx, |view, cx| {
5669 view.move_line_down(&MoveLineDown, cx);
5670 assert_eq!(
5671 view.display_text(cx),
5672 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5673 );
5674 assert_eq!(
5675 view.selected_display_ranges(cx),
5676 vec![
5677 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5678 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5679 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5680 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5681 ]
5682 );
5683 });
5684
5685 view.update(cx, |view, cx| {
5686 view.move_line_up(&MoveLineUp, cx);
5687 assert_eq!(
5688 view.display_text(cx),
5689 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5690 );
5691 assert_eq!(
5692 view.selected_display_ranges(cx),
5693 vec![
5694 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5695 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5696 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5697 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5698 ]
5699 );
5700 });
5701 }
5702
5703 #[gpui::test]
5704 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5705 let settings = EditorSettings::test(&cx);
5706 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5707 let snapshot = buffer.read(cx).snapshot(cx);
5708 let (_, editor) =
5709 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5710 editor.update(cx, |editor, cx| {
5711 editor.insert_blocks(
5712 [BlockProperties {
5713 position: snapshot.anchor_after(Point::new(2, 0)),
5714 disposition: BlockDisposition::Below,
5715 height: 1,
5716 render: Arc::new(|_| Empty::new().boxed()),
5717 }],
5718 cx,
5719 );
5720 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5721 editor.move_line_down(&MoveLineDown, cx);
5722 });
5723 }
5724
5725 #[gpui::test]
5726 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5727 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5728 let settings = EditorSettings::test(&cx);
5729 let view = cx
5730 .add_window(Default::default(), |cx| {
5731 build_editor(buffer.clone(), settings, cx)
5732 })
5733 .1;
5734
5735 // Cut with three selections. Clipboard text is divided into three slices.
5736 view.update(cx, |view, cx| {
5737 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5738 view.cut(&Cut, cx);
5739 assert_eq!(view.display_text(cx), "two four six ");
5740 });
5741
5742 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5743 view.update(cx, |view, cx| {
5744 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5745 view.paste(&Paste, cx);
5746 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5747 assert_eq!(
5748 view.selected_display_ranges(cx),
5749 &[
5750 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5751 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5752 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5753 ]
5754 );
5755 });
5756
5757 // Paste again but with only two cursors. Since the number of cursors doesn't
5758 // match the number of slices in the clipboard, the entire clipboard text
5759 // is pasted at each cursor.
5760 view.update(cx, |view, cx| {
5761 view.select_ranges(vec![0..0, 31..31], None, cx);
5762 view.handle_input(&Input("( ".into()), cx);
5763 view.paste(&Paste, cx);
5764 view.handle_input(&Input(") ".into()), cx);
5765 assert_eq!(
5766 view.display_text(cx),
5767 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5768 );
5769 });
5770
5771 view.update(cx, |view, cx| {
5772 view.select_ranges(vec![0..0], None, cx);
5773 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5774 assert_eq!(
5775 view.display_text(cx),
5776 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5777 );
5778 });
5779
5780 // Cut with three selections, one of which is full-line.
5781 view.update(cx, |view, cx| {
5782 view.select_display_ranges(
5783 &[
5784 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5785 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5786 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5787 ],
5788 cx,
5789 );
5790 view.cut(&Cut, cx);
5791 assert_eq!(
5792 view.display_text(cx),
5793 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5794 );
5795 });
5796
5797 // Paste with three selections, noticing how the copied selection that was full-line
5798 // gets inserted before the second cursor.
5799 view.update(cx, |view, cx| {
5800 view.select_display_ranges(
5801 &[
5802 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5803 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5804 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5805 ],
5806 cx,
5807 );
5808 view.paste(&Paste, cx);
5809 assert_eq!(
5810 view.display_text(cx),
5811 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5812 );
5813 assert_eq!(
5814 view.selected_display_ranges(cx),
5815 &[
5816 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5817 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5818 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5819 ]
5820 );
5821 });
5822
5823 // Copy with a single cursor only, which writes the whole line into the clipboard.
5824 view.update(cx, |view, cx| {
5825 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
5826 view.copy(&Copy, cx);
5827 });
5828
5829 // Paste with three selections, noticing how the copied full-line selection is inserted
5830 // before the empty selections but replaces the selection that is non-empty.
5831 view.update(cx, |view, cx| {
5832 view.select_display_ranges(
5833 &[
5834 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5835 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5836 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5837 ],
5838 cx,
5839 );
5840 view.paste(&Paste, cx);
5841 assert_eq!(
5842 view.display_text(cx),
5843 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5844 );
5845 assert_eq!(
5846 view.selected_display_ranges(cx),
5847 &[
5848 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5849 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5850 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5851 ]
5852 );
5853 });
5854 }
5855
5856 #[gpui::test]
5857 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5858 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5859 let settings = EditorSettings::test(&cx);
5860 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5861 view.update(cx, |view, cx| {
5862 view.select_all(&SelectAll, cx);
5863 assert_eq!(
5864 view.selected_display_ranges(cx),
5865 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5866 );
5867 });
5868 }
5869
5870 #[gpui::test]
5871 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5872 let settings = EditorSettings::test(&cx);
5873 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5874 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5875 view.update(cx, |view, cx| {
5876 view.select_display_ranges(
5877 &[
5878 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5879 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5880 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5881 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5882 ],
5883 cx,
5884 );
5885 view.select_line(&SelectLine, cx);
5886 assert_eq!(
5887 view.selected_display_ranges(cx),
5888 vec![
5889 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5890 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5891 ]
5892 );
5893 });
5894
5895 view.update(cx, |view, cx| {
5896 view.select_line(&SelectLine, cx);
5897 assert_eq!(
5898 view.selected_display_ranges(cx),
5899 vec![
5900 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5901 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5902 ]
5903 );
5904 });
5905
5906 view.update(cx, |view, cx| {
5907 view.select_line(&SelectLine, cx);
5908 assert_eq!(
5909 view.selected_display_ranges(cx),
5910 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5911 );
5912 });
5913 }
5914
5915 #[gpui::test]
5916 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5917 let settings = EditorSettings::test(&cx);
5918 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5919 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5920 view.update(cx, |view, cx| {
5921 view.fold_ranges(
5922 vec![
5923 Point::new(0, 2)..Point::new(1, 2),
5924 Point::new(2, 3)..Point::new(4, 1),
5925 Point::new(7, 0)..Point::new(8, 4),
5926 ],
5927 cx,
5928 );
5929 view.select_display_ranges(
5930 &[
5931 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5932 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5933 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5934 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5935 ],
5936 cx,
5937 );
5938 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5939 });
5940
5941 view.update(cx, |view, cx| {
5942 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5943 assert_eq!(
5944 view.display_text(cx),
5945 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5946 );
5947 assert_eq!(
5948 view.selected_display_ranges(cx),
5949 [
5950 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5951 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5952 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5953 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5954 ]
5955 );
5956 });
5957
5958 view.update(cx, |view, cx| {
5959 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
5960 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5961 assert_eq!(
5962 view.display_text(cx),
5963 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5964 );
5965 assert_eq!(
5966 view.selected_display_ranges(cx),
5967 [
5968 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5969 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5970 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5971 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5972 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5973 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5974 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5975 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5976 ]
5977 );
5978 });
5979 }
5980
5981 #[gpui::test]
5982 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5983 let settings = EditorSettings::test(&cx);
5984 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5985 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5986
5987 view.update(cx, |view, cx| {
5988 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
5989 });
5990 view.update(cx, |view, cx| {
5991 view.add_selection_above(&AddSelectionAbove, cx);
5992 assert_eq!(
5993 view.selected_display_ranges(cx),
5994 vec![
5995 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5996 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5997 ]
5998 );
5999 });
6000
6001 view.update(cx, |view, cx| {
6002 view.add_selection_above(&AddSelectionAbove, cx);
6003 assert_eq!(
6004 view.selected_display_ranges(cx),
6005 vec![
6006 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6007 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6008 ]
6009 );
6010 });
6011
6012 view.update(cx, |view, cx| {
6013 view.add_selection_below(&AddSelectionBelow, cx);
6014 assert_eq!(
6015 view.selected_display_ranges(cx),
6016 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6017 );
6018 });
6019
6020 view.update(cx, |view, cx| {
6021 view.add_selection_below(&AddSelectionBelow, cx);
6022 assert_eq!(
6023 view.selected_display_ranges(cx),
6024 vec![
6025 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6026 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6027 ]
6028 );
6029 });
6030
6031 view.update(cx, |view, cx| {
6032 view.add_selection_below(&AddSelectionBelow, cx);
6033 assert_eq!(
6034 view.selected_display_ranges(cx),
6035 vec![
6036 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6037 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6038 ]
6039 );
6040 });
6041
6042 view.update(cx, |view, cx| {
6043 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6044 });
6045 view.update(cx, |view, cx| {
6046 view.add_selection_below(&AddSelectionBelow, cx);
6047 assert_eq!(
6048 view.selected_display_ranges(cx),
6049 vec![
6050 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6051 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6052 ]
6053 );
6054 });
6055
6056 view.update(cx, |view, cx| {
6057 view.add_selection_below(&AddSelectionBelow, cx);
6058 assert_eq!(
6059 view.selected_display_ranges(cx),
6060 vec![
6061 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6062 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6063 ]
6064 );
6065 });
6066
6067 view.update(cx, |view, cx| {
6068 view.add_selection_above(&AddSelectionAbove, cx);
6069 assert_eq!(
6070 view.selected_display_ranges(cx),
6071 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6072 );
6073 });
6074
6075 view.update(cx, |view, cx| {
6076 view.add_selection_above(&AddSelectionAbove, cx);
6077 assert_eq!(
6078 view.selected_display_ranges(cx),
6079 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6080 );
6081 });
6082
6083 view.update(cx, |view, cx| {
6084 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6085 view.add_selection_below(&AddSelectionBelow, cx);
6086 assert_eq!(
6087 view.selected_display_ranges(cx),
6088 vec![
6089 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6090 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6091 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6092 ]
6093 );
6094 });
6095
6096 view.update(cx, |view, cx| {
6097 view.add_selection_below(&AddSelectionBelow, cx);
6098 assert_eq!(
6099 view.selected_display_ranges(cx),
6100 vec![
6101 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6102 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6103 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6104 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6105 ]
6106 );
6107 });
6108
6109 view.update(cx, |view, cx| {
6110 view.add_selection_above(&AddSelectionAbove, cx);
6111 assert_eq!(
6112 view.selected_display_ranges(cx),
6113 vec![
6114 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6115 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6116 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6117 ]
6118 );
6119 });
6120
6121 view.update(cx, |view, cx| {
6122 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6123 });
6124 view.update(cx, |view, cx| {
6125 view.add_selection_above(&AddSelectionAbove, cx);
6126 assert_eq!(
6127 view.selected_display_ranges(cx),
6128 vec![
6129 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6130 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6131 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6132 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6133 ]
6134 );
6135 });
6136
6137 view.update(cx, |view, cx| {
6138 view.add_selection_below(&AddSelectionBelow, cx);
6139 assert_eq!(
6140 view.selected_display_ranges(cx),
6141 vec![
6142 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6143 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6144 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6145 ]
6146 );
6147 });
6148 }
6149
6150 #[gpui::test]
6151 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6152 let settings = cx.read(EditorSettings::test);
6153 let language = Arc::new(Language::new(
6154 LanguageConfig::default(),
6155 Some(tree_sitter_rust::language()),
6156 ));
6157
6158 let text = r#"
6159 use mod1::mod2::{mod3, mod4};
6160
6161 fn fn_1(param1: bool, param2: &str) {
6162 let var1 = "text";
6163 }
6164 "#
6165 .unindent();
6166
6167 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6168 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6169 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6170 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6171 .await;
6172
6173 view.update(&mut cx, |view, cx| {
6174 view.select_display_ranges(
6175 &[
6176 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6177 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6178 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6179 ],
6180 cx,
6181 );
6182 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6183 });
6184 assert_eq!(
6185 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6186 &[
6187 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6188 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6189 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6190 ]
6191 );
6192
6193 view.update(&mut cx, |view, cx| {
6194 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6195 });
6196 assert_eq!(
6197 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6198 &[
6199 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6200 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6201 ]
6202 );
6203
6204 view.update(&mut cx, |view, cx| {
6205 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6206 });
6207 assert_eq!(
6208 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6209 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6210 );
6211
6212 // Trying to expand the selected syntax node one more time has no effect.
6213 view.update(&mut cx, |view, cx| {
6214 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6215 });
6216 assert_eq!(
6217 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6218 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6219 );
6220
6221 view.update(&mut cx, |view, cx| {
6222 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6223 });
6224 assert_eq!(
6225 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6226 &[
6227 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6228 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6229 ]
6230 );
6231
6232 view.update(&mut cx, |view, cx| {
6233 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6234 });
6235 assert_eq!(
6236 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6237 &[
6238 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6239 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6240 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6241 ]
6242 );
6243
6244 view.update(&mut cx, |view, cx| {
6245 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6246 });
6247 assert_eq!(
6248 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6249 &[
6250 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6251 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6252 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6253 ]
6254 );
6255
6256 // Trying to shrink the selected syntax node one more time has no effect.
6257 view.update(&mut cx, |view, cx| {
6258 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6259 });
6260 assert_eq!(
6261 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6262 &[
6263 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6264 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6265 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6266 ]
6267 );
6268
6269 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6270 // a fold.
6271 view.update(&mut cx, |view, cx| {
6272 view.fold_ranges(
6273 vec![
6274 Point::new(0, 21)..Point::new(0, 24),
6275 Point::new(3, 20)..Point::new(3, 22),
6276 ],
6277 cx,
6278 );
6279 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6280 });
6281 assert_eq!(
6282 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6283 &[
6284 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6285 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6286 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6287 ]
6288 );
6289 }
6290
6291 #[gpui::test]
6292 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6293 let settings = cx.read(EditorSettings::test);
6294 let language = Arc::new(
6295 Language::new(
6296 LanguageConfig {
6297 brackets: vec![
6298 BracketPair {
6299 start: "{".to_string(),
6300 end: "}".to_string(),
6301 close: false,
6302 newline: true,
6303 },
6304 BracketPair {
6305 start: "(".to_string(),
6306 end: ")".to_string(),
6307 close: false,
6308 newline: true,
6309 },
6310 ],
6311 ..Default::default()
6312 },
6313 Some(tree_sitter_rust::language()),
6314 )
6315 .with_indents_query(
6316 r#"
6317 (_ "(" ")" @end) @indent
6318 (_ "{" "}" @end) @indent
6319 "#,
6320 )
6321 .unwrap(),
6322 );
6323
6324 let text = "fn a() {}";
6325
6326 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6327 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6328 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6329 editor
6330 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6331 .await;
6332
6333 editor.update(&mut cx, |editor, cx| {
6334 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6335 editor.newline(&Newline, cx);
6336 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6337 assert_eq!(
6338 editor.selected_ranges(cx),
6339 &[
6340 Point::new(1, 4)..Point::new(1, 4),
6341 Point::new(3, 4)..Point::new(3, 4),
6342 Point::new(5, 0)..Point::new(5, 0)
6343 ]
6344 );
6345 });
6346 }
6347
6348 #[gpui::test]
6349 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6350 let settings = cx.read(EditorSettings::test);
6351 let language = Arc::new(Language::new(
6352 LanguageConfig {
6353 brackets: vec![
6354 BracketPair {
6355 start: "{".to_string(),
6356 end: "}".to_string(),
6357 close: true,
6358 newline: true,
6359 },
6360 BracketPair {
6361 start: "/*".to_string(),
6362 end: " */".to_string(),
6363 close: true,
6364 newline: true,
6365 },
6366 ],
6367 ..Default::default()
6368 },
6369 Some(tree_sitter_rust::language()),
6370 ));
6371
6372 let text = r#"
6373 a
6374
6375 /
6376
6377 "#
6378 .unindent();
6379
6380 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6381 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6382 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6383 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6384 .await;
6385
6386 view.update(&mut cx, |view, cx| {
6387 view.select_display_ranges(
6388 &[
6389 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6390 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6391 ],
6392 cx,
6393 );
6394 view.handle_input(&Input("{".to_string()), cx);
6395 view.handle_input(&Input("{".to_string()), cx);
6396 view.handle_input(&Input("{".to_string()), cx);
6397 assert_eq!(
6398 view.text(cx),
6399 "
6400 {{{}}}
6401 {{{}}}
6402 /
6403
6404 "
6405 .unindent()
6406 );
6407
6408 view.move_right(&MoveRight, cx);
6409 view.handle_input(&Input("}".to_string()), cx);
6410 view.handle_input(&Input("}".to_string()), cx);
6411 view.handle_input(&Input("}".to_string()), cx);
6412 assert_eq!(
6413 view.text(cx),
6414 "
6415 {{{}}}}
6416 {{{}}}}
6417 /
6418
6419 "
6420 .unindent()
6421 );
6422
6423 view.undo(&Undo, cx);
6424 view.handle_input(&Input("/".to_string()), cx);
6425 view.handle_input(&Input("*".to_string()), cx);
6426 assert_eq!(
6427 view.text(cx),
6428 "
6429 /* */
6430 /* */
6431 /
6432
6433 "
6434 .unindent()
6435 );
6436
6437 view.undo(&Undo, cx);
6438 view.select_display_ranges(
6439 &[
6440 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6441 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6442 ],
6443 cx,
6444 );
6445 view.handle_input(&Input("*".to_string()), cx);
6446 assert_eq!(
6447 view.text(cx),
6448 "
6449 a
6450
6451 /*
6452 *
6453 "
6454 .unindent()
6455 );
6456 });
6457 }
6458
6459 #[gpui::test]
6460 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6461 let settings = cx.read(EditorSettings::test);
6462 let language = Arc::new(Language::new(
6463 LanguageConfig {
6464 line_comment: Some("// ".to_string()),
6465 ..Default::default()
6466 },
6467 Some(tree_sitter_rust::language()),
6468 ));
6469
6470 let text = "
6471 fn a() {
6472 //b();
6473 // c();
6474 // d();
6475 }
6476 "
6477 .unindent();
6478
6479 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6480 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6481 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6482
6483 view.update(&mut cx, |editor, cx| {
6484 // If multiple selections intersect a line, the line is only
6485 // toggled once.
6486 editor.select_display_ranges(
6487 &[
6488 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6489 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6490 ],
6491 cx,
6492 );
6493 editor.toggle_comments(&ToggleComments, cx);
6494 assert_eq!(
6495 editor.text(cx),
6496 "
6497 fn a() {
6498 b();
6499 c();
6500 d();
6501 }
6502 "
6503 .unindent()
6504 );
6505
6506 // The comment prefix is inserted at the same column for every line
6507 // in a selection.
6508 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
6509 editor.toggle_comments(&ToggleComments, cx);
6510 assert_eq!(
6511 editor.text(cx),
6512 "
6513 fn a() {
6514 // b();
6515 // c();
6516 // d();
6517 }
6518 "
6519 .unindent()
6520 );
6521
6522 // If a selection ends at the beginning of a line, that line is not toggled.
6523 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
6524 editor.toggle_comments(&ToggleComments, cx);
6525 assert_eq!(
6526 editor.text(cx),
6527 "
6528 fn a() {
6529 // b();
6530 c();
6531 // d();
6532 }
6533 "
6534 .unindent()
6535 );
6536 });
6537 }
6538
6539 #[gpui::test]
6540 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6541 let settings = EditorSettings::test(cx);
6542 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6543 let multibuffer = cx.add_model(|cx| {
6544 let mut multibuffer = MultiBuffer::new(0);
6545 multibuffer.push_excerpt(
6546 ExcerptProperties {
6547 buffer: &buffer,
6548 range: Point::new(0, 0)..Point::new(0, 4),
6549 },
6550 cx,
6551 );
6552 multibuffer.push_excerpt(
6553 ExcerptProperties {
6554 buffer: &buffer,
6555 range: Point::new(1, 0)..Point::new(1, 4),
6556 },
6557 cx,
6558 );
6559 multibuffer
6560 });
6561
6562 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6563
6564 let (_, view) = cx.add_window(Default::default(), |cx| {
6565 build_editor(multibuffer, settings, cx)
6566 });
6567 view.update(cx, |view, cx| {
6568 view.select_display_ranges(
6569 &[
6570 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6571 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6572 ],
6573 cx,
6574 );
6575
6576 view.handle_input(&Input("X".to_string()), cx);
6577 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6578 assert_eq!(
6579 view.selected_display_ranges(cx),
6580 &[
6581 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6582 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6583 ]
6584 )
6585 });
6586 }
6587
6588 #[gpui::test]
6589 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6590 let settings = EditorSettings::test(cx);
6591 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6592 let multibuffer = cx.add_model(|cx| {
6593 let mut multibuffer = MultiBuffer::new(0);
6594 multibuffer.push_excerpt(
6595 ExcerptProperties {
6596 buffer: &buffer,
6597 range: Point::new(0, 0)..Point::new(1, 4),
6598 },
6599 cx,
6600 );
6601 multibuffer.push_excerpt(
6602 ExcerptProperties {
6603 buffer: &buffer,
6604 range: Point::new(1, 0)..Point::new(2, 4),
6605 },
6606 cx,
6607 );
6608 multibuffer
6609 });
6610
6611 assert_eq!(
6612 multibuffer.read(cx).read(cx).text(),
6613 "aaaa\nbbbb\nbbbb\ncccc"
6614 );
6615
6616 let (_, view) = cx.add_window(Default::default(), |cx| {
6617 build_editor(multibuffer, settings, cx)
6618 });
6619 view.update(cx, |view, cx| {
6620 view.select_display_ranges(
6621 &[
6622 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6623 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6624 ],
6625 cx,
6626 );
6627
6628 view.handle_input(&Input("X".to_string()), cx);
6629 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6630 assert_eq!(
6631 view.selected_display_ranges(cx),
6632 &[
6633 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6634 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6635 ]
6636 );
6637
6638 view.newline(&Newline, cx);
6639 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
6640 assert_eq!(
6641 view.selected_display_ranges(cx),
6642 &[
6643 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6644 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6645 ]
6646 );
6647 });
6648 }
6649
6650 #[gpui::test]
6651 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
6652 let settings = EditorSettings::test(cx);
6653 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6654 let mut excerpt1_id = None;
6655 let multibuffer = cx.add_model(|cx| {
6656 let mut multibuffer = MultiBuffer::new(0);
6657 excerpt1_id = Some(multibuffer.push_excerpt(
6658 ExcerptProperties {
6659 buffer: &buffer,
6660 range: Point::new(0, 0)..Point::new(1, 4),
6661 },
6662 cx,
6663 ));
6664 multibuffer.push_excerpt(
6665 ExcerptProperties {
6666 buffer: &buffer,
6667 range: Point::new(1, 0)..Point::new(2, 4),
6668 },
6669 cx,
6670 );
6671 multibuffer
6672 });
6673 assert_eq!(
6674 multibuffer.read(cx).read(cx).text(),
6675 "aaaa\nbbbb\nbbbb\ncccc"
6676 );
6677 let (_, editor) = cx.add_window(Default::default(), |cx| {
6678 let mut editor = build_editor(multibuffer.clone(), settings, cx);
6679 editor.select_display_ranges(
6680 &[
6681 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6682 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6683 ],
6684 cx,
6685 );
6686 editor
6687 });
6688
6689 // Refreshing selections is a no-op when excerpts haven't changed.
6690 editor.update(cx, |editor, cx| {
6691 editor.refresh_selections(cx);
6692 assert_eq!(
6693 editor.selected_display_ranges(cx),
6694 [
6695 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6696 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6697 ]
6698 );
6699 });
6700
6701 multibuffer.update(cx, |multibuffer, cx| {
6702 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
6703 });
6704 editor.update(cx, |editor, cx| {
6705 // Removing an excerpt causes the first selection to become degenerate.
6706 assert_eq!(
6707 editor.selected_display_ranges(cx),
6708 [
6709 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6710 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6711 ]
6712 );
6713
6714 // Refreshing selections will relocate the first selection to the original buffer
6715 // location.
6716 editor.refresh_selections(cx);
6717 assert_eq!(
6718 editor.selected_display_ranges(cx),
6719 [
6720 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6721 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
6722 ]
6723 );
6724 });
6725 }
6726
6727 #[gpui::test]
6728 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6729 let settings = cx.read(EditorSettings::test);
6730 let language = Arc::new(Language::new(
6731 LanguageConfig {
6732 brackets: vec![
6733 BracketPair {
6734 start: "{".to_string(),
6735 end: "}".to_string(),
6736 close: true,
6737 newline: true,
6738 },
6739 BracketPair {
6740 start: "/* ".to_string(),
6741 end: " */".to_string(),
6742 close: true,
6743 newline: true,
6744 },
6745 ],
6746 ..Default::default()
6747 },
6748 Some(tree_sitter_rust::language()),
6749 ));
6750
6751 let text = concat!(
6752 "{ }\n", // Suppress rustfmt
6753 " x\n", //
6754 " /* */\n", //
6755 "x\n", //
6756 "{{} }\n", //
6757 );
6758
6759 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6760 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6761 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6762 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6763 .await;
6764
6765 view.update(&mut cx, |view, cx| {
6766 view.select_display_ranges(
6767 &[
6768 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6769 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6770 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6771 ],
6772 cx,
6773 );
6774 view.newline(&Newline, cx);
6775
6776 assert_eq!(
6777 view.buffer().read(cx).read(cx).text(),
6778 concat!(
6779 "{ \n", // Suppress rustfmt
6780 "\n", //
6781 "}\n", //
6782 " x\n", //
6783 " /* \n", //
6784 " \n", //
6785 " */\n", //
6786 "x\n", //
6787 "{{} \n", //
6788 "}\n", //
6789 )
6790 );
6791 });
6792 }
6793
6794 #[gpui::test]
6795 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
6796 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
6797 let settings = EditorSettings::test(&cx);
6798 let (_, editor) = cx.add_window(Default::default(), |cx| {
6799 build_editor(buffer.clone(), settings, cx)
6800 });
6801
6802 editor.update(cx, |editor, cx| {
6803 struct Type1;
6804 struct Type2;
6805
6806 let buffer = buffer.read(cx).snapshot(cx);
6807
6808 let anchor_range = |range: Range<Point>| {
6809 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
6810 };
6811
6812 editor.highlight_ranges::<Type1>(
6813 vec![
6814 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
6815 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
6816 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
6817 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
6818 ],
6819 Color::red(),
6820 cx,
6821 );
6822 editor.highlight_ranges::<Type2>(
6823 vec![
6824 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
6825 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
6826 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
6827 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
6828 ],
6829 Color::green(),
6830 cx,
6831 );
6832
6833 let snapshot = editor.snapshot(cx);
6834 assert_eq!(
6835 editor.highlighted_ranges_in_range(
6836 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
6837 &snapshot,
6838 ),
6839 &[
6840 (
6841 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
6842 Color::red(),
6843 ),
6844 (
6845 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
6846 Color::red(),
6847 ),
6848 (
6849 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
6850 Color::green(),
6851 ),
6852 (
6853 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
6854 Color::green(),
6855 ),
6856 ]
6857 );
6858 assert_eq!(
6859 editor.highlighted_ranges_in_range(
6860 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
6861 &snapshot,
6862 ),
6863 &[(
6864 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
6865 Color::red(),
6866 )]
6867 );
6868 });
6869 }
6870
6871 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6872 let point = DisplayPoint::new(row as u32, column as u32);
6873 point..point
6874 }
6875
6876 fn build_editor(
6877 buffer: ModelHandle<MultiBuffer>,
6878 settings: EditorSettings,
6879 cx: &mut ViewContext<Editor>,
6880 ) -> Editor {
6881 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6882 }
6883}
6884
6885trait RangeExt<T> {
6886 fn sorted(&self) -> Range<T>;
6887 fn to_inclusive(&self) -> RangeInclusive<T>;
6888}
6889
6890impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6891 fn sorted(&self) -> Self {
6892 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6893 }
6894
6895 fn to_inclusive(&self) -> RangeInclusive<T> {
6896 self.start.clone()..=self.end.clone()
6897 }
6898}