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!(ShowAutocomplete);
121
122pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
123 path_openers.push(Box::new(items::BufferOpener));
124 cx.add_bindings(vec![
125 Binding::new("escape", Cancel, Some("Editor")),
126 Binding::new("backspace", Backspace, Some("Editor")),
127 Binding::new("ctrl-h", Backspace, Some("Editor")),
128 Binding::new("delete", Delete, Some("Editor")),
129 Binding::new("ctrl-d", Delete, Some("Editor")),
130 Binding::new("enter", Newline, Some("Editor && mode == full")),
131 Binding::new(
132 "alt-enter",
133 Input("\n".into()),
134 Some("Editor && mode == auto_height"),
135 ),
136 Binding::new("tab", Tab, Some("Editor")),
137 Binding::new("shift-tab", Outdent, Some("Editor")),
138 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
139 Binding::new(
140 "alt-backspace",
141 DeleteToPreviousWordBoundary,
142 Some("Editor"),
143 ),
144 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
145 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
146 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
147 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
148 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
149 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
150 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
151 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
152 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
153 Binding::new("cmd-x", Cut, Some("Editor")),
154 Binding::new("cmd-c", Copy, Some("Editor")),
155 Binding::new("cmd-v", Paste, Some("Editor")),
156 Binding::new("cmd-z", Undo, Some("Editor")),
157 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
158 Binding::new("up", MoveUp, Some("Editor")),
159 Binding::new("down", MoveDown, Some("Editor")),
160 Binding::new("left", MoveLeft, Some("Editor")),
161 Binding::new("right", MoveRight, Some("Editor")),
162 Binding::new("ctrl-p", MoveUp, Some("Editor")),
163 Binding::new("ctrl-n", MoveDown, Some("Editor")),
164 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
165 Binding::new("ctrl-f", MoveRight, Some("Editor")),
166 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
167 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
168 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
169 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
170 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
171 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
172 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
173 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
174 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
175 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
176 Binding::new("shift-up", SelectUp, Some("Editor")),
177 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
178 Binding::new("shift-down", SelectDown, Some("Editor")),
179 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
180 Binding::new("shift-left", SelectLeft, Some("Editor")),
181 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
182 Binding::new("shift-right", SelectRight, Some("Editor")),
183 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
184 Binding::new(
185 "alt-shift-left",
186 SelectToPreviousWordBoundary,
187 Some("Editor"),
188 ),
189 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
190 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
191 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
192 Binding::new(
193 "cmd-shift-left",
194 SelectToBeginningOfLine(true),
195 Some("Editor"),
196 ),
197 Binding::new(
198 "ctrl-shift-A",
199 SelectToBeginningOfLine(true),
200 Some("Editor"),
201 ),
202 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
203 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
204 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
205 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
206 Binding::new("cmd-a", SelectAll, Some("Editor")),
207 Binding::new("cmd-l", SelectLine, Some("Editor")),
208 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
209 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
210 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
211 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
212 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
213 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
214 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
215 Binding::new("cmd-/", ToggleComments, Some("Editor")),
216 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
217 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
218 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
219 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
220 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
221 Binding::new("f12", GoToDefinition, Some("Editor")),
222 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
223 Binding::new("pageup", PageUp, Some("Editor")),
224 Binding::new("pagedown", PageDown, Some("Editor")),
225 Binding::new("alt-cmd-[", Fold, Some("Editor")),
226 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
227 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
228 Binding::new("ctrl-space", ShowAutocomplete, Some("Editor")),
229 ]);
230
231 cx.add_action(Editor::open_new);
232 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
233 cx.add_action(Editor::select);
234 cx.add_action(Editor::cancel);
235 cx.add_action(Editor::handle_input);
236 cx.add_action(Editor::newline);
237 cx.add_action(Editor::backspace);
238 cx.add_action(Editor::delete);
239 cx.add_action(Editor::tab);
240 cx.add_action(Editor::outdent);
241 cx.add_action(Editor::delete_line);
242 cx.add_action(Editor::delete_to_previous_word_boundary);
243 cx.add_action(Editor::delete_to_next_word_boundary);
244 cx.add_action(Editor::delete_to_beginning_of_line);
245 cx.add_action(Editor::delete_to_end_of_line);
246 cx.add_action(Editor::cut_to_end_of_line);
247 cx.add_action(Editor::duplicate_line);
248 cx.add_action(Editor::move_line_up);
249 cx.add_action(Editor::move_line_down);
250 cx.add_action(Editor::cut);
251 cx.add_action(Editor::copy);
252 cx.add_action(Editor::paste);
253 cx.add_action(Editor::undo);
254 cx.add_action(Editor::redo);
255 cx.add_action(Editor::move_up);
256 cx.add_action(Editor::move_down);
257 cx.add_action(Editor::move_left);
258 cx.add_action(Editor::move_right);
259 cx.add_action(Editor::move_to_previous_word_boundary);
260 cx.add_action(Editor::move_to_next_word_boundary);
261 cx.add_action(Editor::move_to_beginning_of_line);
262 cx.add_action(Editor::move_to_end_of_line);
263 cx.add_action(Editor::move_to_beginning);
264 cx.add_action(Editor::move_to_end);
265 cx.add_action(Editor::select_up);
266 cx.add_action(Editor::select_down);
267 cx.add_action(Editor::select_left);
268 cx.add_action(Editor::select_right);
269 cx.add_action(Editor::select_to_previous_word_boundary);
270 cx.add_action(Editor::select_to_next_word_boundary);
271 cx.add_action(Editor::select_to_beginning_of_line);
272 cx.add_action(Editor::select_to_end_of_line);
273 cx.add_action(Editor::select_to_beginning);
274 cx.add_action(Editor::select_to_end);
275 cx.add_action(Editor::select_all);
276 cx.add_action(Editor::select_line);
277 cx.add_action(Editor::split_selection_into_lines);
278 cx.add_action(Editor::add_selection_above);
279 cx.add_action(Editor::add_selection_below);
280 cx.add_action(Editor::select_next);
281 cx.add_action(Editor::toggle_comments);
282 cx.add_action(Editor::select_larger_syntax_node);
283 cx.add_action(Editor::select_smaller_syntax_node);
284 cx.add_action(Editor::move_to_enclosing_bracket);
285 cx.add_action(Editor::show_next_diagnostic);
286 cx.add_action(Editor::go_to_definition);
287 cx.add_action(Editor::page_up);
288 cx.add_action(Editor::page_down);
289 cx.add_action(Editor::fold);
290 cx.add_action(Editor::unfold);
291 cx.add_action(Editor::fold_selected_ranges);
292 cx.add_action(Editor::show_completions);
293}
294
295trait SelectionExt {
296 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
297 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
298 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
299 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
300 -> Range<u32>;
301}
302
303#[derive(Clone, Debug)]
304pub enum SelectPhase {
305 Begin {
306 position: DisplayPoint,
307 add: bool,
308 click_count: usize,
309 },
310 BeginColumnar {
311 position: DisplayPoint,
312 overshoot: u32,
313 },
314 Extend {
315 position: DisplayPoint,
316 click_count: usize,
317 },
318 Update {
319 position: DisplayPoint,
320 overshoot: u32,
321 scroll_position: Vector2F,
322 },
323 End,
324}
325
326#[derive(Clone, Debug)]
327enum SelectMode {
328 Character,
329 Word(Range<Anchor>),
330 Line(Range<Anchor>),
331 All,
332}
333
334#[derive(PartialEq, Eq)]
335pub enum Autoscroll {
336 Fit,
337 Center,
338 Newest,
339}
340
341#[derive(Copy, Clone, PartialEq, Eq)]
342pub enum EditorMode {
343 SingleLine,
344 AutoHeight { max_lines: usize },
345 Full,
346}
347
348#[derive(Clone)]
349pub struct EditorSettings {
350 pub tab_size: usize,
351 pub soft_wrap: SoftWrap,
352 pub style: EditorStyle,
353}
354
355#[derive(Clone)]
356pub enum SoftWrap {
357 None,
358 EditorWidth,
359 Column(u32),
360}
361
362pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
363
364pub struct Editor {
365 handle: WeakViewHandle<Self>,
366 buffer: ModelHandle<MultiBuffer>,
367 display_map: ModelHandle<DisplayMap>,
368 next_selection_id: usize,
369 selections: Arc<[Selection<Anchor>]>,
370 pending_selection: Option<PendingSelection>,
371 columnar_selection_tail: Option<Anchor>,
372 add_selections_state: Option<AddSelectionsState>,
373 select_next_state: Option<SelectNextState>,
374 selection_history:
375 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
376 autoclose_stack: Vec<BracketPairState>,
377 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
378 active_diagnostics: Option<ActiveDiagnosticGroup>,
379 scroll_position: Vector2F,
380 scroll_top_anchor: Option<Anchor>,
381 autoscroll_request: Option<Autoscroll>,
382 build_settings: BuildSettings,
383 focused: bool,
384 show_local_cursors: bool,
385 blink_epoch: usize,
386 blinking_paused: bool,
387 mode: EditorMode,
388 vertical_scroll_margin: f32,
389 placeholder_text: Option<Arc<str>>,
390 highlighted_rows: Option<Range<u32>>,
391 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
392 nav_history: Option<ItemNavHistory>,
393 completion_state: Option<CompletionState>,
394}
395
396pub struct EditorSnapshot {
397 pub mode: EditorMode,
398 pub display_snapshot: DisplaySnapshot,
399 pub placeholder_text: Option<Arc<str>>,
400 is_focused: bool,
401 scroll_position: Vector2F,
402 scroll_top_anchor: Option<Anchor>,
403}
404
405struct PendingSelection {
406 selection: Selection<Anchor>,
407 mode: SelectMode,
408}
409
410struct AddSelectionsState {
411 above: bool,
412 stack: Vec<usize>,
413}
414
415struct SelectNextState {
416 query: AhoCorasick,
417 wordwise: bool,
418 done: bool,
419}
420
421#[derive(Debug)]
422struct BracketPairState {
423 ranges: Vec<Range<Anchor>>,
424 pair: BracketPair,
425}
426
427struct CompletionState {
428 completions: Arc<[Completion]>,
429 list: UniformListState,
430}
431
432#[derive(Debug)]
433struct ActiveDiagnosticGroup {
434 primary_range: Range<Anchor>,
435 primary_message: String,
436 blocks: HashMap<BlockId, Diagnostic>,
437 is_valid: bool,
438}
439
440#[derive(Serialize, Deserialize)]
441struct ClipboardSelection {
442 len: usize,
443 is_entire_line: bool,
444}
445
446pub struct NavigationData {
447 anchor: Anchor,
448 offset: usize,
449}
450
451#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord)]
452pub enum CharKind {
453 Newline,
454 Punctuation,
455 Whitespace,
456 Word,
457}
458
459impl Editor {
460 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
461 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
462 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
463 let mut view = Self::for_buffer(buffer, build_settings, cx);
464 view.mode = EditorMode::SingleLine;
465 view
466 }
467
468 pub fn auto_height(
469 max_lines: usize,
470 build_settings: BuildSettings,
471 cx: &mut ViewContext<Self>,
472 ) -> Self {
473 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
474 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
475 let mut view = Self::for_buffer(buffer, build_settings, cx);
476 view.mode = EditorMode::AutoHeight { max_lines };
477 view
478 }
479
480 pub fn for_buffer(
481 buffer: ModelHandle<MultiBuffer>,
482 build_settings: BuildSettings,
483 cx: &mut ViewContext<Self>,
484 ) -> Self {
485 Self::new(buffer, build_settings, cx)
486 }
487
488 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
489 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
490 clone.scroll_position = self.scroll_position;
491 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
492 clone.nav_history = self
493 .nav_history
494 .as_ref()
495 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
496 clone
497 }
498
499 pub fn new(
500 buffer: ModelHandle<MultiBuffer>,
501 build_settings: BuildSettings,
502 cx: &mut ViewContext<Self>,
503 ) -> Self {
504 let settings = build_settings(cx);
505 let display_map = cx.add_model(|cx| {
506 DisplayMap::new(
507 buffer.clone(),
508 settings.tab_size,
509 settings.style.text.font_id,
510 settings.style.text.font_size,
511 None,
512 cx,
513 )
514 });
515 cx.observe(&buffer, Self::on_buffer_changed).detach();
516 cx.subscribe(&buffer, Self::on_buffer_event).detach();
517 cx.observe(&display_map, Self::on_display_map_changed)
518 .detach();
519
520 let mut this = Self {
521 handle: cx.weak_handle(),
522 buffer,
523 display_map,
524 selections: Arc::from([]),
525 pending_selection: None,
526 columnar_selection_tail: None,
527 next_selection_id: 0,
528 add_selections_state: None,
529 select_next_state: None,
530 selection_history: Default::default(),
531 autoclose_stack: Default::default(),
532 select_larger_syntax_node_stack: Vec::new(),
533 active_diagnostics: None,
534 build_settings,
535 scroll_position: Vector2F::zero(),
536 scroll_top_anchor: None,
537 autoscroll_request: None,
538 focused: false,
539 show_local_cursors: false,
540 blink_epoch: 0,
541 blinking_paused: false,
542 mode: EditorMode::Full,
543 vertical_scroll_margin: 3.0,
544 placeholder_text: None,
545 highlighted_rows: None,
546 highlighted_ranges: Default::default(),
547 nav_history: None,
548 completion_state: None,
549 };
550 let selection = Selection {
551 id: post_inc(&mut this.next_selection_id),
552 start: 0,
553 end: 0,
554 reversed: false,
555 goal: SelectionGoal::None,
556 };
557 this.update_selections(vec![selection], None, cx);
558 this
559 }
560
561 pub fn open_new(
562 workspace: &mut Workspace,
563 _: &workspace::OpenNew,
564 cx: &mut ViewContext<Workspace>,
565 ) {
566 let buffer = cx
567 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
568 workspace.open_item(BufferItemHandle(buffer), cx);
569 }
570
571 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
572 self.buffer.read(cx).replica_id()
573 }
574
575 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
576 &self.buffer
577 }
578
579 pub fn title(&self, cx: &AppContext) -> String {
580 let filename = self
581 .buffer()
582 .read(cx)
583 .file(cx)
584 .map(|file| file.file_name(cx));
585 if let Some(name) = filename {
586 name.to_string_lossy().into()
587 } else {
588 "untitled".into()
589 }
590 }
591
592 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
593 EditorSnapshot {
594 mode: self.mode,
595 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
596 scroll_position: self.scroll_position,
597 scroll_top_anchor: self.scroll_top_anchor.clone(),
598 placeholder_text: self.placeholder_text.clone(),
599 is_focused: self
600 .handle
601 .upgrade(cx)
602 .map_or(false, |handle| handle.is_focused(cx)),
603 }
604 }
605
606 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
607 self.buffer.read(cx).language(cx)
608 }
609
610 pub fn set_placeholder_text(
611 &mut self,
612 placeholder_text: impl Into<Arc<str>>,
613 cx: &mut ViewContext<Self>,
614 ) {
615 self.placeholder_text = Some(placeholder_text.into());
616 cx.notify();
617 }
618
619 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
620 self.vertical_scroll_margin = margin_rows as f32;
621 cx.notify();
622 }
623
624 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
625 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
626
627 if scroll_position.y() == 0. {
628 self.scroll_top_anchor = None;
629 self.scroll_position = scroll_position;
630 } else {
631 let scroll_top_buffer_offset =
632 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
633 let anchor = map
634 .buffer_snapshot
635 .anchor_at(scroll_top_buffer_offset, Bias::Right);
636 self.scroll_position = vec2f(
637 scroll_position.x(),
638 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
639 );
640 self.scroll_top_anchor = Some(anchor);
641 }
642
643 cx.notify();
644 }
645
646 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
647 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
648 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
649 }
650
651 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
652 if max < self.scroll_position.x() {
653 self.scroll_position.set_x(max);
654 true
655 } else {
656 false
657 }
658 }
659
660 pub fn autoscroll_vertically(
661 &mut self,
662 viewport_height: f32,
663 line_height: f32,
664 cx: &mut ViewContext<Self>,
665 ) -> bool {
666 let visible_lines = viewport_height / line_height;
667 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
668 let mut scroll_position =
669 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
670 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
671 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
672 } else {
673 display_map.max_point().row().saturating_sub(1) as f32
674 };
675 if scroll_position.y() > max_scroll_top {
676 scroll_position.set_y(max_scroll_top);
677 self.set_scroll_position(scroll_position, cx);
678 }
679
680 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
681 autoscroll
682 } else {
683 return false;
684 };
685
686 let first_cursor_top;
687 let last_cursor_bottom;
688 if let Some(highlighted_rows) = &self.highlighted_rows {
689 first_cursor_top = highlighted_rows.start as f32;
690 last_cursor_bottom = first_cursor_top + 1.;
691 } else if autoscroll == Autoscroll::Newest {
692 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
693 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
694 last_cursor_bottom = first_cursor_top + 1.;
695 } else {
696 let selections = self.local_selections::<Point>(cx);
697 first_cursor_top = selections
698 .first()
699 .unwrap()
700 .head()
701 .to_display_point(&display_map)
702 .row() as f32;
703 last_cursor_bottom = selections
704 .last()
705 .unwrap()
706 .head()
707 .to_display_point(&display_map)
708 .row() as f32
709 + 1.0;
710 }
711
712 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
713 0.
714 } else {
715 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
716 };
717 if margin < 0.0 {
718 return false;
719 }
720
721 match autoscroll {
722 Autoscroll::Fit | Autoscroll::Newest => {
723 let margin = margin.min(self.vertical_scroll_margin);
724 let target_top = (first_cursor_top - margin).max(0.0);
725 let target_bottom = last_cursor_bottom + margin;
726 let start_row = scroll_position.y();
727 let end_row = start_row + visible_lines;
728
729 if target_top < start_row {
730 scroll_position.set_y(target_top);
731 self.set_scroll_position(scroll_position, cx);
732 } else if target_bottom >= end_row {
733 scroll_position.set_y(target_bottom - visible_lines);
734 self.set_scroll_position(scroll_position, cx);
735 }
736 }
737 Autoscroll::Center => {
738 scroll_position.set_y((first_cursor_top - margin).max(0.0));
739 self.set_scroll_position(scroll_position, cx);
740 }
741 }
742
743 true
744 }
745
746 pub fn autoscroll_horizontally(
747 &mut self,
748 start_row: u32,
749 viewport_width: f32,
750 scroll_width: f32,
751 max_glyph_width: f32,
752 layouts: &[text_layout::Line],
753 cx: &mut ViewContext<Self>,
754 ) -> bool {
755 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
756 let selections = self.local_selections::<Point>(cx);
757
758 let mut target_left;
759 let mut target_right;
760
761 if self.highlighted_rows.is_some() {
762 target_left = 0.0_f32;
763 target_right = 0.0_f32;
764 } else {
765 target_left = std::f32::INFINITY;
766 target_right = 0.0_f32;
767 for selection in selections {
768 let head = selection.head().to_display_point(&display_map);
769 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
770 let start_column = head.column().saturating_sub(3);
771 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
772 target_left = target_left.min(
773 layouts[(head.row() - start_row) as usize]
774 .x_for_index(start_column as usize),
775 );
776 target_right = target_right.max(
777 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
778 + max_glyph_width,
779 );
780 }
781 }
782 }
783
784 target_right = target_right.min(scroll_width);
785
786 if target_right - target_left > viewport_width {
787 return false;
788 }
789
790 let scroll_left = self.scroll_position.x() * max_glyph_width;
791 let scroll_right = scroll_left + viewport_width;
792
793 if target_left < scroll_left {
794 self.scroll_position.set_x(target_left / max_glyph_width);
795 true
796 } else if target_right > scroll_right {
797 self.scroll_position
798 .set_x((target_right - viewport_width) / max_glyph_width);
799 true
800 } else {
801 false
802 }
803 }
804
805 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
806 match phase {
807 SelectPhase::Begin {
808 position,
809 add,
810 click_count,
811 } => self.begin_selection(*position, *add, *click_count, cx),
812 SelectPhase::BeginColumnar {
813 position,
814 overshoot,
815 } => self.begin_columnar_selection(*position, *overshoot, cx),
816 SelectPhase::Extend {
817 position,
818 click_count,
819 } => self.extend_selection(*position, *click_count, cx),
820 SelectPhase::Update {
821 position,
822 overshoot,
823 scroll_position,
824 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
825 SelectPhase::End => self.end_selection(cx),
826 }
827 }
828
829 fn extend_selection(
830 &mut self,
831 position: DisplayPoint,
832 click_count: usize,
833 cx: &mut ViewContext<Self>,
834 ) {
835 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
836 let tail = self
837 .newest_selection::<usize>(&display_map.buffer_snapshot)
838 .tail();
839 self.begin_selection(position, false, click_count, cx);
840
841 let position = position.to_offset(&display_map, Bias::Left);
842 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
843 let pending = self.pending_selection.as_mut().unwrap();
844
845 if position >= tail {
846 pending.selection.start = tail_anchor.clone();
847 } else {
848 pending.selection.end = tail_anchor.clone();
849 pending.selection.reversed = true;
850 }
851
852 match &mut pending.mode {
853 SelectMode::Word(range) | SelectMode::Line(range) => {
854 *range = tail_anchor.clone()..tail_anchor
855 }
856 _ => {}
857 }
858 }
859
860 fn begin_selection(
861 &mut self,
862 position: DisplayPoint,
863 add: bool,
864 click_count: usize,
865 cx: &mut ViewContext<Self>,
866 ) {
867 if !self.focused {
868 cx.focus_self();
869 cx.emit(Event::Activate);
870 }
871
872 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
873 let buffer = &display_map.buffer_snapshot;
874 let newest_selection = self.newest_anchor_selection().unwrap().clone();
875
876 let start;
877 let end;
878 let mode;
879 match click_count {
880 1 => {
881 start = buffer.anchor_before(position.to_point(&display_map));
882 end = start.clone();
883 mode = SelectMode::Character;
884 }
885 2 => {
886 let range = movement::surrounding_word(&display_map, position);
887 start = buffer.anchor_before(range.start.to_point(&display_map));
888 end = buffer.anchor_before(range.end.to_point(&display_map));
889 mode = SelectMode::Word(start.clone()..end.clone());
890 }
891 3 => {
892 let position = display_map.clip_point(position, Bias::Left);
893 let line_start = movement::line_beginning(&display_map, position, false);
894 let mut next_line_start = line_start.clone();
895 *next_line_start.row_mut() += 1;
896 *next_line_start.column_mut() = 0;
897 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
898
899 start = buffer.anchor_before(line_start.to_point(&display_map));
900 end = buffer.anchor_before(next_line_start.to_point(&display_map));
901 mode = SelectMode::Line(start.clone()..end.clone());
902 }
903 _ => {
904 start = buffer.anchor_before(0);
905 end = buffer.anchor_before(buffer.len());
906 mode = SelectMode::All;
907 }
908 }
909
910 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
911
912 let selection = Selection {
913 id: post_inc(&mut self.next_selection_id),
914 start,
915 end,
916 reversed: false,
917 goal: SelectionGoal::None,
918 };
919
920 if !add {
921 self.update_selections::<usize>(Vec::new(), None, cx);
922 } else if click_count > 1 {
923 // Remove the newest selection since it was only added as part of this multi-click.
924 let mut selections = self.local_selections(cx);
925 selections.retain(|selection| selection.id != newest_selection.id);
926 self.update_selections::<usize>(selections, None, cx)
927 }
928
929 self.pending_selection = Some(PendingSelection { selection, mode });
930
931 cx.notify();
932 }
933
934 fn begin_columnar_selection(
935 &mut self,
936 position: DisplayPoint,
937 overshoot: u32,
938 cx: &mut ViewContext<Self>,
939 ) {
940 if !self.focused {
941 cx.focus_self();
942 cx.emit(Event::Activate);
943 }
944
945 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
946 let tail = self
947 .newest_selection::<Point>(&display_map.buffer_snapshot)
948 .tail();
949 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
950
951 self.select_columns(
952 tail.to_display_point(&display_map),
953 position,
954 overshoot,
955 &display_map,
956 cx,
957 );
958 }
959
960 fn update_selection(
961 &mut self,
962 position: DisplayPoint,
963 overshoot: u32,
964 scroll_position: Vector2F,
965 cx: &mut ViewContext<Self>,
966 ) {
967 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
968
969 if let Some(tail) = self.columnar_selection_tail.as_ref() {
970 let tail = tail.to_display_point(&display_map);
971 self.select_columns(tail, position, overshoot, &display_map, cx);
972 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
973 let buffer = self.buffer.read(cx).snapshot(cx);
974 let head;
975 let tail;
976 match mode {
977 SelectMode::Character => {
978 head = position.to_point(&display_map);
979 tail = selection.tail().to_point(&buffer);
980 }
981 SelectMode::Word(original_range) => {
982 let original_display_range = original_range.start.to_display_point(&display_map)
983 ..original_range.end.to_display_point(&display_map);
984 let original_buffer_range = original_display_range.start.to_point(&display_map)
985 ..original_display_range.end.to_point(&display_map);
986 if movement::is_inside_word(&display_map, position)
987 || original_display_range.contains(&position)
988 {
989 let word_range = movement::surrounding_word(&display_map, position);
990 if word_range.start < original_display_range.start {
991 head = word_range.start.to_point(&display_map);
992 } else {
993 head = word_range.end.to_point(&display_map);
994 }
995 } else {
996 head = position.to_point(&display_map);
997 }
998
999 if head <= original_buffer_range.start {
1000 tail = original_buffer_range.end;
1001 } else {
1002 tail = original_buffer_range.start;
1003 }
1004 }
1005 SelectMode::Line(original_range) => {
1006 let original_display_range = original_range.start.to_display_point(&display_map)
1007 ..original_range.end.to_display_point(&display_map);
1008 let original_buffer_range = original_display_range.start.to_point(&display_map)
1009 ..original_display_range.end.to_point(&display_map);
1010 let line_start = movement::line_beginning(&display_map, position, false);
1011 let mut next_line_start = line_start.clone();
1012 *next_line_start.row_mut() += 1;
1013 *next_line_start.column_mut() = 0;
1014 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1015
1016 if line_start < original_display_range.start {
1017 head = line_start.to_point(&display_map);
1018 } else {
1019 head = next_line_start.to_point(&display_map);
1020 }
1021
1022 if head <= original_buffer_range.start {
1023 tail = original_buffer_range.end;
1024 } else {
1025 tail = original_buffer_range.start;
1026 }
1027 }
1028 SelectMode::All => {
1029 return;
1030 }
1031 };
1032
1033 if head < tail {
1034 selection.start = buffer.anchor_before(head);
1035 selection.end = buffer.anchor_before(tail);
1036 selection.reversed = true;
1037 } else {
1038 selection.start = buffer.anchor_before(tail);
1039 selection.end = buffer.anchor_before(head);
1040 selection.reversed = false;
1041 }
1042 } else {
1043 log::error!("update_selection dispatched with no pending selection");
1044 return;
1045 }
1046
1047 self.set_scroll_position(scroll_position, cx);
1048 cx.notify();
1049 }
1050
1051 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1052 self.columnar_selection_tail.take();
1053 if self.pending_selection.is_some() {
1054 let selections = self.local_selections::<usize>(cx);
1055 self.update_selections(selections, None, cx);
1056 }
1057 }
1058
1059 fn select_columns(
1060 &mut self,
1061 tail: DisplayPoint,
1062 head: DisplayPoint,
1063 overshoot: u32,
1064 display_map: &DisplaySnapshot,
1065 cx: &mut ViewContext<Self>,
1066 ) {
1067 let start_row = cmp::min(tail.row(), head.row());
1068 let end_row = cmp::max(tail.row(), head.row());
1069 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1070 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1071 let reversed = start_column < tail.column();
1072
1073 let selections = (start_row..=end_row)
1074 .filter_map(|row| {
1075 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1076 let start = display_map
1077 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1078 .to_point(&display_map);
1079 let end = display_map
1080 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1081 .to_point(&display_map);
1082 Some(Selection {
1083 id: post_inc(&mut self.next_selection_id),
1084 start,
1085 end,
1086 reversed,
1087 goal: SelectionGoal::None,
1088 })
1089 } else {
1090 None
1091 }
1092 })
1093 .collect::<Vec<_>>();
1094
1095 self.update_selections(selections, None, cx);
1096 cx.notify();
1097 }
1098
1099 pub fn is_selecting(&self) -> bool {
1100 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1101 }
1102
1103 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1104 if self.mode != EditorMode::Full {
1105 cx.propagate_action();
1106 return;
1107 }
1108
1109 if self.active_diagnostics.is_some() {
1110 self.dismiss_diagnostics(cx);
1111 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1112 let buffer = self.buffer.read(cx).snapshot(cx);
1113 let selection = Selection {
1114 id: selection.id,
1115 start: selection.start.to_point(&buffer),
1116 end: selection.end.to_point(&buffer),
1117 reversed: selection.reversed,
1118 goal: selection.goal,
1119 };
1120 if self.local_selections::<Point>(cx).is_empty() {
1121 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1122 }
1123 } else {
1124 let buffer = self.buffer.read(cx).snapshot(cx);
1125 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1126 if self.selection_count() == 1 {
1127 if oldest_selection.is_empty() {
1128 cx.propagate_action();
1129 return;
1130 }
1131
1132 oldest_selection.start = oldest_selection.head().clone();
1133 oldest_selection.end = oldest_selection.head().clone();
1134 }
1135 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1136 }
1137 }
1138
1139 #[cfg(any(test, feature = "test-support"))]
1140 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1141 &self,
1142 cx: &mut MutableAppContext,
1143 ) -> Vec<Range<D>> {
1144 self.local_selections::<D>(cx)
1145 .iter()
1146 .map(|s| {
1147 if s.reversed {
1148 s.end.clone()..s.start.clone()
1149 } else {
1150 s.start.clone()..s.end.clone()
1151 }
1152 })
1153 .collect()
1154 }
1155
1156 #[cfg(any(test, feature = "test-support"))]
1157 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1158 let display_map = self
1159 .display_map
1160 .update(cx, |display_map, cx| display_map.snapshot(cx));
1161 self.selections
1162 .iter()
1163 .chain(
1164 self.pending_selection
1165 .as_ref()
1166 .map(|pending| &pending.selection),
1167 )
1168 .map(|s| {
1169 if s.reversed {
1170 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1171 } else {
1172 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1173 }
1174 })
1175 .collect()
1176 }
1177
1178 pub fn select_ranges<I, T>(
1179 &mut self,
1180 ranges: I,
1181 autoscroll: Option<Autoscroll>,
1182 cx: &mut ViewContext<Self>,
1183 ) where
1184 I: IntoIterator<Item = Range<T>>,
1185 T: ToOffset,
1186 {
1187 let buffer = self.buffer.read(cx).snapshot(cx);
1188 let selections = ranges
1189 .into_iter()
1190 .map(|range| {
1191 let mut start = range.start.to_offset(&buffer);
1192 let mut end = range.end.to_offset(&buffer);
1193 let reversed = if start > end {
1194 mem::swap(&mut start, &mut end);
1195 true
1196 } else {
1197 false
1198 };
1199 Selection {
1200 id: post_inc(&mut self.next_selection_id),
1201 start,
1202 end,
1203 reversed,
1204 goal: SelectionGoal::None,
1205 }
1206 })
1207 .collect::<Vec<_>>();
1208 self.update_selections(selections, autoscroll, cx);
1209 }
1210
1211 #[cfg(any(test, feature = "test-support"))]
1212 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1213 where
1214 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1215 {
1216 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1217 let selections = ranges
1218 .into_iter()
1219 .map(|range| {
1220 let mut start = range.start;
1221 let mut end = range.end;
1222 let reversed = if start > end {
1223 mem::swap(&mut start, &mut end);
1224 true
1225 } else {
1226 false
1227 };
1228 Selection {
1229 id: post_inc(&mut self.next_selection_id),
1230 start: start.to_point(&display_map),
1231 end: end.to_point(&display_map),
1232 reversed,
1233 goal: SelectionGoal::None,
1234 }
1235 })
1236 .collect();
1237 self.update_selections(selections, None, cx);
1238 }
1239
1240 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1241 let text = action.0.as_ref();
1242 if !self.skip_autoclose_end(text, cx) {
1243 self.start_transaction(cx);
1244 self.insert(text, cx);
1245 self.autoclose_pairs(cx);
1246 self.end_transaction(cx);
1247 }
1248 }
1249
1250 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1251 self.start_transaction(cx);
1252 let mut old_selections = SmallVec::<[_; 32]>::new();
1253 {
1254 let selections = self.local_selections::<Point>(cx);
1255 let buffer = self.buffer.read(cx).snapshot(cx);
1256 for selection in selections.iter() {
1257 let start_point = selection.start;
1258 let indent = buffer
1259 .indent_column_for_line(start_point.row)
1260 .min(start_point.column);
1261 let start = selection.start.to_offset(&buffer);
1262 let end = selection.end.to_offset(&buffer);
1263
1264 let mut insert_extra_newline = false;
1265 if let Some(language) = buffer.language() {
1266 let leading_whitespace_len = buffer
1267 .reversed_chars_at(start)
1268 .take_while(|c| c.is_whitespace() && *c != '\n')
1269 .map(|c| c.len_utf8())
1270 .sum::<usize>();
1271
1272 let trailing_whitespace_len = buffer
1273 .chars_at(end)
1274 .take_while(|c| c.is_whitespace() && *c != '\n')
1275 .map(|c| c.len_utf8())
1276 .sum::<usize>();
1277
1278 insert_extra_newline = language.brackets().iter().any(|pair| {
1279 let pair_start = pair.start.trim_end();
1280 let pair_end = pair.end.trim_start();
1281
1282 pair.newline
1283 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1284 && buffer.contains_str_at(
1285 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1286 pair_start,
1287 )
1288 });
1289 }
1290
1291 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1292 }
1293 }
1294
1295 self.buffer.update(cx, |buffer, cx| {
1296 let mut delta = 0_isize;
1297 let mut pending_edit: Option<PendingEdit> = None;
1298 for (_, range, indent, insert_extra_newline) in &old_selections {
1299 if pending_edit.as_ref().map_or(false, |pending| {
1300 pending.indent != *indent
1301 || pending.insert_extra_newline != *insert_extra_newline
1302 }) {
1303 let pending = pending_edit.take().unwrap();
1304 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1305 new_text.push('\n');
1306 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1307 if pending.insert_extra_newline {
1308 new_text = new_text.repeat(2);
1309 }
1310 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1311 delta += pending.delta;
1312 }
1313
1314 let start = (range.start as isize + delta) as usize;
1315 let end = (range.end as isize + delta) as usize;
1316 let mut text_len = *indent as usize + 1;
1317 if *insert_extra_newline {
1318 text_len *= 2;
1319 }
1320
1321 let pending = pending_edit.get_or_insert_with(Default::default);
1322 pending.delta += text_len as isize - (end - start) as isize;
1323 pending.indent = *indent;
1324 pending.insert_extra_newline = *insert_extra_newline;
1325 pending.ranges.push(start..end);
1326 }
1327
1328 let pending = pending_edit.unwrap();
1329 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1330 new_text.push('\n');
1331 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1332 if pending.insert_extra_newline {
1333 new_text = new_text.repeat(2);
1334 }
1335 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1336
1337 let buffer = buffer.read(cx);
1338 self.selections = self
1339 .selections
1340 .iter()
1341 .cloned()
1342 .zip(old_selections)
1343 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1344 if insert_extra_newline {
1345 let mut cursor = new_selection.start.to_point(&buffer);
1346 cursor.row -= 1;
1347 cursor.column = buffer.line_len(cursor.row);
1348 let anchor = buffer.anchor_after(cursor);
1349 new_selection.start = anchor.clone();
1350 new_selection.end = anchor;
1351 }
1352 new_selection
1353 })
1354 .collect();
1355 });
1356
1357 self.request_autoscroll(Autoscroll::Fit, cx);
1358 self.end_transaction(cx);
1359
1360 #[derive(Default)]
1361 struct PendingEdit {
1362 indent: u32,
1363 insert_extra_newline: bool,
1364 delta: isize,
1365 ranges: SmallVec<[Range<usize>; 32]>,
1366 }
1367 }
1368
1369 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1370 self.start_transaction(cx);
1371 let old_selections = self.local_selections::<usize>(cx);
1372 self.buffer.update(cx, |buffer, cx| {
1373 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1374 buffer.edit_with_autoindent(edit_ranges, text, cx);
1375 });
1376
1377 let selections = self.local_selections::<usize>(cx);
1378 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1379 self.end_transaction(cx);
1380 }
1381
1382 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1383 let selections = self.local_selections::<usize>(cx);
1384 let mut bracket_pair_state = None;
1385 let mut new_selections = None;
1386 self.buffer.update(cx, |buffer, cx| {
1387 let mut snapshot = buffer.snapshot(cx);
1388 let left_biased_selections = selections
1389 .iter()
1390 .map(|selection| Selection {
1391 id: selection.id,
1392 start: snapshot.anchor_before(selection.start),
1393 end: snapshot.anchor_before(selection.end),
1394 reversed: selection.reversed,
1395 goal: selection.goal,
1396 })
1397 .collect::<Vec<_>>();
1398
1399 let autoclose_pair = snapshot.language().and_then(|language| {
1400 let first_selection_start = selections.first().unwrap().start;
1401 let pair = language.brackets().iter().find(|pair| {
1402 snapshot.contains_str_at(
1403 first_selection_start.saturating_sub(pair.start.len()),
1404 &pair.start,
1405 )
1406 });
1407 pair.and_then(|pair| {
1408 let should_autoclose = selections[1..].iter().all(|selection| {
1409 snapshot.contains_str_at(
1410 selection.start.saturating_sub(pair.start.len()),
1411 &pair.start,
1412 )
1413 });
1414
1415 if should_autoclose {
1416 Some(pair.clone())
1417 } else {
1418 None
1419 }
1420 })
1421 });
1422
1423 if let Some(pair) = autoclose_pair {
1424 let selection_ranges = selections
1425 .iter()
1426 .map(|selection| {
1427 let start = selection.start.to_offset(&snapshot);
1428 start..start
1429 })
1430 .collect::<SmallVec<[_; 32]>>();
1431
1432 buffer.edit(selection_ranges, &pair.end, cx);
1433 snapshot = buffer.snapshot(cx);
1434
1435 new_selections = Some(
1436 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1437 .collect::<Vec<_>>(),
1438 );
1439
1440 if pair.end.len() == 1 {
1441 let mut delta = 0;
1442 bracket_pair_state = Some(BracketPairState {
1443 ranges: selections
1444 .iter()
1445 .map(move |selection| {
1446 let offset = selection.start + delta;
1447 delta += 1;
1448 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1449 })
1450 .collect(),
1451 pair,
1452 });
1453 }
1454 }
1455 });
1456
1457 if let Some(new_selections) = new_selections {
1458 self.update_selections(new_selections, None, cx);
1459 }
1460 if let Some(bracket_pair_state) = bracket_pair_state {
1461 self.autoclose_stack.push(bracket_pair_state);
1462 }
1463 }
1464
1465 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1466 let old_selections = self.local_selections::<usize>(cx);
1467 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1468 autoclose_pair
1469 } else {
1470 return false;
1471 };
1472 if text != autoclose_pair.pair.end {
1473 return false;
1474 }
1475
1476 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1477
1478 let buffer = self.buffer.read(cx).snapshot(cx);
1479 if old_selections
1480 .iter()
1481 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1482 .all(|(selection, autoclose_range)| {
1483 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1484 selection.is_empty() && selection.start == autoclose_range_end
1485 })
1486 {
1487 let new_selections = old_selections
1488 .into_iter()
1489 .map(|selection| {
1490 let cursor = selection.start + 1;
1491 Selection {
1492 id: selection.id,
1493 start: cursor,
1494 end: cursor,
1495 reversed: false,
1496 goal: SelectionGoal::None,
1497 }
1498 })
1499 .collect();
1500 self.autoclose_stack.pop();
1501 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1502 true
1503 } else {
1504 false
1505 }
1506 }
1507
1508 fn show_completions(&mut self, _: &ShowAutocomplete, cx: &mut ViewContext<Self>) {
1509 let position = self
1510 .newest_selection::<usize>(&self.buffer.read(cx).read(cx))
1511 .head();
1512
1513 let completions = self
1514 .buffer
1515 .update(cx, |buffer, cx| buffer.completions(position, cx));
1516
1517 cx.spawn_weak(|this, mut cx| async move {
1518 let completions = completions.await?;
1519 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1520 this.update(&mut cx, |this, cx| {
1521 this.completion_state = Some(CompletionState {
1522 completions: completions.into(),
1523 list: Default::default(),
1524 });
1525 cx.notify();
1526 });
1527 }
1528
1529 Ok::<_, anyhow::Error>(())
1530 })
1531 .detach_and_log_err(cx);
1532 }
1533
1534 pub fn has_completions(&self) -> bool {
1535 self.completion_state.is_some()
1536 }
1537
1538 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1539 self.completion_state.as_ref().map(|state| {
1540 let build_settings = self.build_settings.clone();
1541 let settings = build_settings(cx);
1542 let completions = state.completions.clone();
1543 UniformList::new(
1544 state.list.clone(),
1545 state.completions.len(),
1546 move |range, items, cx| {
1547 let settings = build_settings(cx);
1548 for completion in &completions[range] {
1549 items.push(
1550 Label::new(completion.label().to_string(), settings.style.text.clone())
1551 .contained()
1552 .with_style(settings.style.autocomplete.item)
1553 .boxed(),
1554 );
1555 }
1556 },
1557 )
1558 .with_width_from_item(
1559 state
1560 .completions
1561 .iter()
1562 .enumerate()
1563 .max_by_key(|(_, completion)| completion.label().chars().count())
1564 .map(|(ix, _)| ix),
1565 )
1566 .contained()
1567 .with_style(settings.style.autocomplete.container)
1568 .boxed()
1569 })
1570 }
1571
1572 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1573 self.start_transaction(cx);
1574 self.select_all(&SelectAll, cx);
1575 self.insert("", cx);
1576 self.end_transaction(cx);
1577 }
1578
1579 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1580 self.start_transaction(cx);
1581 let mut selections = self.local_selections::<Point>(cx);
1582 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1583 for selection in &mut selections {
1584 if selection.is_empty() {
1585 let head = selection.head().to_display_point(&display_map);
1586 let cursor = movement::left(&display_map, head)
1587 .unwrap()
1588 .to_point(&display_map);
1589 selection.set_head(cursor);
1590 selection.goal = SelectionGoal::None;
1591 }
1592 }
1593 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1594 self.insert("", cx);
1595 self.end_transaction(cx);
1596 }
1597
1598 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1599 self.start_transaction(cx);
1600 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1601 let mut selections = self.local_selections::<Point>(cx);
1602 for selection in &mut selections {
1603 if selection.is_empty() {
1604 let head = selection.head().to_display_point(&display_map);
1605 let cursor = movement::right(&display_map, head)
1606 .unwrap()
1607 .to_point(&display_map);
1608 selection.set_head(cursor);
1609 selection.goal = SelectionGoal::None;
1610 }
1611 }
1612 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1613 self.insert(&"", cx);
1614 self.end_transaction(cx);
1615 }
1616
1617 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1618 self.start_transaction(cx);
1619 let tab_size = (self.build_settings)(cx).tab_size;
1620 let mut selections = self.local_selections::<Point>(cx);
1621 let mut last_indent = None;
1622 self.buffer.update(cx, |buffer, cx| {
1623 for selection in &mut selections {
1624 if selection.is_empty() {
1625 let char_column = buffer
1626 .read(cx)
1627 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1628 .flat_map(str::chars)
1629 .count();
1630 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1631 buffer.edit(
1632 [selection.start..selection.start],
1633 " ".repeat(chars_to_next_tab_stop),
1634 cx,
1635 );
1636 selection.start.column += chars_to_next_tab_stop as u32;
1637 selection.end = selection.start;
1638 } else {
1639 let mut start_row = selection.start.row;
1640 let mut end_row = selection.end.row + 1;
1641
1642 // If a selection ends at the beginning of a line, don't indent
1643 // that last line.
1644 if selection.end.column == 0 {
1645 end_row -= 1;
1646 }
1647
1648 // Avoid re-indenting a row that has already been indented by a
1649 // previous selection, but still update this selection's column
1650 // to reflect that indentation.
1651 if let Some((last_indent_row, last_indent_len)) = last_indent {
1652 if last_indent_row == selection.start.row {
1653 selection.start.column += last_indent_len;
1654 start_row += 1;
1655 }
1656 if last_indent_row == selection.end.row {
1657 selection.end.column += last_indent_len;
1658 }
1659 }
1660
1661 for row in start_row..end_row {
1662 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1663 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1664 let row_start = Point::new(row, 0);
1665 buffer.edit(
1666 [row_start..row_start],
1667 " ".repeat(columns_to_next_tab_stop),
1668 cx,
1669 );
1670
1671 // Update this selection's endpoints to reflect the indentation.
1672 if row == selection.start.row {
1673 selection.start.column += columns_to_next_tab_stop as u32;
1674 }
1675 if row == selection.end.row {
1676 selection.end.column += columns_to_next_tab_stop as u32;
1677 }
1678
1679 last_indent = Some((row, columns_to_next_tab_stop as u32));
1680 }
1681 }
1682 }
1683 });
1684
1685 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1686 self.end_transaction(cx);
1687 }
1688
1689 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1690 self.start_transaction(cx);
1691 let tab_size = (self.build_settings)(cx).tab_size;
1692 let selections = self.local_selections::<Point>(cx);
1693 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1694 let mut deletion_ranges = Vec::new();
1695 let mut last_outdent = None;
1696 {
1697 let buffer = self.buffer.read(cx).read(cx);
1698 for selection in &selections {
1699 let mut rows = selection.spanned_rows(false, &display_map);
1700
1701 // Avoid re-outdenting a row that has already been outdented by a
1702 // previous selection.
1703 if let Some(last_row) = last_outdent {
1704 if last_row == rows.start {
1705 rows.start += 1;
1706 }
1707 }
1708
1709 for row in rows {
1710 let column = buffer.indent_column_for_line(row) as usize;
1711 if column > 0 {
1712 let mut deletion_len = (column % tab_size) as u32;
1713 if deletion_len == 0 {
1714 deletion_len = tab_size as u32;
1715 }
1716 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1717 last_outdent = Some(row);
1718 }
1719 }
1720 }
1721 }
1722 self.buffer.update(cx, |buffer, cx| {
1723 buffer.edit(deletion_ranges, "", cx);
1724 });
1725
1726 self.update_selections(
1727 self.local_selections::<usize>(cx),
1728 Some(Autoscroll::Fit),
1729 cx,
1730 );
1731 self.end_transaction(cx);
1732 }
1733
1734 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1735 self.start_transaction(cx);
1736
1737 let selections = self.local_selections::<Point>(cx);
1738 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1739 let buffer = self.buffer.read(cx).snapshot(cx);
1740
1741 let mut new_cursors = Vec::new();
1742 let mut edit_ranges = Vec::new();
1743 let mut selections = selections.iter().peekable();
1744 while let Some(selection) = selections.next() {
1745 let mut rows = selection.spanned_rows(false, &display_map);
1746 let goal_display_column = selection.head().to_display_point(&display_map).column();
1747
1748 // Accumulate contiguous regions of rows that we want to delete.
1749 while let Some(next_selection) = selections.peek() {
1750 let next_rows = next_selection.spanned_rows(false, &display_map);
1751 if next_rows.start <= rows.end {
1752 rows.end = next_rows.end;
1753 selections.next().unwrap();
1754 } else {
1755 break;
1756 }
1757 }
1758
1759 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1760 let edit_end;
1761 let cursor_buffer_row;
1762 if buffer.max_point().row >= rows.end {
1763 // If there's a line after the range, delete the \n from the end of the row range
1764 // and position the cursor on the next line.
1765 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1766 cursor_buffer_row = rows.end;
1767 } else {
1768 // If there isn't a line after the range, delete the \n from the line before the
1769 // start of the row range and position the cursor there.
1770 edit_start = edit_start.saturating_sub(1);
1771 edit_end = buffer.len();
1772 cursor_buffer_row = rows.start.saturating_sub(1);
1773 }
1774
1775 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1776 *cursor.column_mut() =
1777 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1778
1779 new_cursors.push((
1780 selection.id,
1781 buffer.anchor_after(cursor.to_point(&display_map)),
1782 ));
1783 edit_ranges.push(edit_start..edit_end);
1784 }
1785
1786 let buffer = self.buffer.update(cx, |buffer, cx| {
1787 buffer.edit(edit_ranges, "", cx);
1788 buffer.snapshot(cx)
1789 });
1790 let new_selections = new_cursors
1791 .into_iter()
1792 .map(|(id, cursor)| {
1793 let cursor = cursor.to_point(&buffer);
1794 Selection {
1795 id,
1796 start: cursor,
1797 end: cursor,
1798 reversed: false,
1799 goal: SelectionGoal::None,
1800 }
1801 })
1802 .collect();
1803 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1804 self.end_transaction(cx);
1805 }
1806
1807 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1808 self.start_transaction(cx);
1809
1810 let selections = self.local_selections::<Point>(cx);
1811 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1812 let buffer = &display_map.buffer_snapshot;
1813
1814 let mut edits = Vec::new();
1815 let mut selections_iter = selections.iter().peekable();
1816 while let Some(selection) = selections_iter.next() {
1817 // Avoid duplicating the same lines twice.
1818 let mut rows = selection.spanned_rows(false, &display_map);
1819
1820 while let Some(next_selection) = selections_iter.peek() {
1821 let next_rows = next_selection.spanned_rows(false, &display_map);
1822 if next_rows.start <= rows.end - 1 {
1823 rows.end = next_rows.end;
1824 selections_iter.next().unwrap();
1825 } else {
1826 break;
1827 }
1828 }
1829
1830 // Copy the text from the selected row region and splice it at the start of the region.
1831 let start = Point::new(rows.start, 0);
1832 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1833 let text = buffer
1834 .text_for_range(start..end)
1835 .chain(Some("\n"))
1836 .collect::<String>();
1837 edits.push((start, text, rows.len() as u32));
1838 }
1839
1840 self.buffer.update(cx, |buffer, cx| {
1841 for (point, text, _) in edits.into_iter().rev() {
1842 buffer.edit(Some(point..point), text, cx);
1843 }
1844 });
1845
1846 self.request_autoscroll(Autoscroll::Fit, cx);
1847 self.end_transaction(cx);
1848 }
1849
1850 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1851 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1852 let buffer = self.buffer.read(cx).snapshot(cx);
1853
1854 let mut edits = Vec::new();
1855 let mut unfold_ranges = Vec::new();
1856 let mut refold_ranges = Vec::new();
1857
1858 let selections = self.local_selections::<Point>(cx);
1859 let mut selections = selections.iter().peekable();
1860 let mut contiguous_row_selections = Vec::new();
1861 let mut new_selections = Vec::new();
1862
1863 while let Some(selection) = selections.next() {
1864 // Find all the selections that span a contiguous row range
1865 contiguous_row_selections.push(selection.clone());
1866 let start_row = selection.start.row;
1867 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1868 display_map.next_line_boundary(selection.end).0.row + 1
1869 } else {
1870 selection.end.row
1871 };
1872
1873 while let Some(next_selection) = selections.peek() {
1874 if next_selection.start.row <= end_row {
1875 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1876 display_map.next_line_boundary(next_selection.end).0.row + 1
1877 } else {
1878 next_selection.end.row
1879 };
1880 contiguous_row_selections.push(selections.next().unwrap().clone());
1881 } else {
1882 break;
1883 }
1884 }
1885
1886 // Move the text spanned by the row range to be before the line preceding the row range
1887 if start_row > 0 {
1888 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1889 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1890 let insertion_point = display_map
1891 .prev_line_boundary(Point::new(start_row - 1, 0))
1892 .0;
1893
1894 // Don't move lines across excerpts
1895 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1896 let text = buffer
1897 .text_for_range(range_to_move.clone())
1898 .flat_map(|s| s.chars())
1899 .skip(1)
1900 .chain(['\n'])
1901 .collect::<String>();
1902
1903 edits.push((
1904 buffer.anchor_after(range_to_move.start)
1905 ..buffer.anchor_before(range_to_move.end),
1906 String::new(),
1907 ));
1908 let insertion_anchor = buffer.anchor_after(insertion_point);
1909 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1910
1911 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1912
1913 // Move selections up
1914 new_selections.extend(contiguous_row_selections.drain(..).map(
1915 |mut selection| {
1916 selection.start.row -= row_delta;
1917 selection.end.row -= row_delta;
1918 selection
1919 },
1920 ));
1921
1922 // Move folds up
1923 unfold_ranges.push(range_to_move.clone());
1924 for fold in display_map.folds_in_range(
1925 buffer.anchor_before(range_to_move.start)
1926 ..buffer.anchor_after(range_to_move.end),
1927 ) {
1928 let mut start = fold.start.to_point(&buffer);
1929 let mut end = fold.end.to_point(&buffer);
1930 start.row -= row_delta;
1931 end.row -= row_delta;
1932 refold_ranges.push(start..end);
1933 }
1934 }
1935 }
1936
1937 // If we didn't move line(s), preserve the existing selections
1938 new_selections.extend(contiguous_row_selections.drain(..));
1939 }
1940
1941 self.start_transaction(cx);
1942 self.unfold_ranges(unfold_ranges, cx);
1943 self.buffer.update(cx, |buffer, cx| {
1944 for (range, text) in edits {
1945 buffer.edit([range], text, cx);
1946 }
1947 });
1948 self.fold_ranges(refold_ranges, cx);
1949 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1950 self.end_transaction(cx);
1951 }
1952
1953 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1954 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1955 let buffer = self.buffer.read(cx).snapshot(cx);
1956
1957 let mut edits = Vec::new();
1958 let mut unfold_ranges = Vec::new();
1959 let mut refold_ranges = Vec::new();
1960
1961 let selections = self.local_selections::<Point>(cx);
1962 let mut selections = selections.iter().peekable();
1963 let mut contiguous_row_selections = Vec::new();
1964 let mut new_selections = Vec::new();
1965
1966 while let Some(selection) = selections.next() {
1967 // Find all the selections that span a contiguous row range
1968 contiguous_row_selections.push(selection.clone());
1969 let start_row = selection.start.row;
1970 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1971 display_map.next_line_boundary(selection.end).0.row + 1
1972 } else {
1973 selection.end.row
1974 };
1975
1976 while let Some(next_selection) = selections.peek() {
1977 if next_selection.start.row <= end_row {
1978 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1979 display_map.next_line_boundary(next_selection.end).0.row + 1
1980 } else {
1981 next_selection.end.row
1982 };
1983 contiguous_row_selections.push(selections.next().unwrap().clone());
1984 } else {
1985 break;
1986 }
1987 }
1988
1989 // Move the text spanned by the row range to be after the last line of the row range
1990 if end_row <= buffer.max_point().row {
1991 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1992 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
1993
1994 // Don't move lines across excerpt boundaries
1995 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1996 let mut text = String::from("\n");
1997 text.extend(buffer.text_for_range(range_to_move.clone()));
1998 text.pop(); // Drop trailing newline
1999 edits.push((
2000 buffer.anchor_after(range_to_move.start)
2001 ..buffer.anchor_before(range_to_move.end),
2002 String::new(),
2003 ));
2004 let insertion_anchor = buffer.anchor_after(insertion_point);
2005 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2006
2007 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2008
2009 // Move selections down
2010 new_selections.extend(contiguous_row_selections.drain(..).map(
2011 |mut selection| {
2012 selection.start.row += row_delta;
2013 selection.end.row += row_delta;
2014 selection
2015 },
2016 ));
2017
2018 // Move folds down
2019 unfold_ranges.push(range_to_move.clone());
2020 for fold in display_map.folds_in_range(
2021 buffer.anchor_before(range_to_move.start)
2022 ..buffer.anchor_after(range_to_move.end),
2023 ) {
2024 let mut start = fold.start.to_point(&buffer);
2025 let mut end = fold.end.to_point(&buffer);
2026 start.row += row_delta;
2027 end.row += row_delta;
2028 refold_ranges.push(start..end);
2029 }
2030 }
2031 }
2032
2033 // If we didn't move line(s), preserve the existing selections
2034 new_selections.extend(contiguous_row_selections.drain(..));
2035 }
2036
2037 self.start_transaction(cx);
2038 self.unfold_ranges(unfold_ranges, cx);
2039 self.buffer.update(cx, |buffer, cx| {
2040 for (range, text) in edits {
2041 buffer.edit([range], text, cx);
2042 }
2043 });
2044 self.fold_ranges(refold_ranges, cx);
2045 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2046 self.end_transaction(cx);
2047 }
2048
2049 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2050 self.start_transaction(cx);
2051 let mut text = String::new();
2052 let mut selections = self.local_selections::<Point>(cx);
2053 let mut clipboard_selections = Vec::with_capacity(selections.len());
2054 {
2055 let buffer = self.buffer.read(cx).read(cx);
2056 let max_point = buffer.max_point();
2057 for selection in &mut selections {
2058 let is_entire_line = selection.is_empty();
2059 if is_entire_line {
2060 selection.start = Point::new(selection.start.row, 0);
2061 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2062 }
2063 let mut len = 0;
2064 for chunk in buffer.text_for_range(selection.start..selection.end) {
2065 text.push_str(chunk);
2066 len += chunk.len();
2067 }
2068 clipboard_selections.push(ClipboardSelection {
2069 len,
2070 is_entire_line,
2071 });
2072 }
2073 }
2074 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2075 self.insert("", cx);
2076 self.end_transaction(cx);
2077
2078 cx.as_mut()
2079 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2080 }
2081
2082 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2083 let selections = self.local_selections::<Point>(cx);
2084 let mut text = String::new();
2085 let mut clipboard_selections = Vec::with_capacity(selections.len());
2086 {
2087 let buffer = self.buffer.read(cx).read(cx);
2088 let max_point = buffer.max_point();
2089 for selection in selections.iter() {
2090 let mut start = selection.start;
2091 let mut end = selection.end;
2092 let is_entire_line = selection.is_empty();
2093 if is_entire_line {
2094 start = Point::new(start.row, 0);
2095 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2096 }
2097 let mut len = 0;
2098 for chunk in buffer.text_for_range(start..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
2109 cx.as_mut()
2110 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2111 }
2112
2113 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2114 if let Some(item) = cx.as_mut().read_from_clipboard() {
2115 let clipboard_text = item.text();
2116 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2117 let mut selections = self.local_selections::<usize>(cx);
2118 let all_selections_were_entire_line =
2119 clipboard_selections.iter().all(|s| s.is_entire_line);
2120 if clipboard_selections.len() != selections.len() {
2121 clipboard_selections.clear();
2122 }
2123
2124 let mut delta = 0_isize;
2125 let mut start_offset = 0;
2126 for (i, selection) in selections.iter_mut().enumerate() {
2127 let to_insert;
2128 let entire_line;
2129 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2130 let end_offset = start_offset + clipboard_selection.len;
2131 to_insert = &clipboard_text[start_offset..end_offset];
2132 entire_line = clipboard_selection.is_entire_line;
2133 start_offset = end_offset
2134 } else {
2135 to_insert = clipboard_text.as_str();
2136 entire_line = all_selections_were_entire_line;
2137 }
2138
2139 selection.start = (selection.start as isize + delta) as usize;
2140 selection.end = (selection.end as isize + delta) as usize;
2141
2142 self.buffer.update(cx, |buffer, cx| {
2143 // If the corresponding selection was empty when this slice of the
2144 // clipboard text was written, then the entire line containing the
2145 // selection was copied. If this selection is also currently empty,
2146 // then paste the line before the current line of the buffer.
2147 let range = if selection.is_empty() && entire_line {
2148 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2149 let line_start = selection.start - column;
2150 line_start..line_start
2151 } else {
2152 selection.start..selection.end
2153 };
2154
2155 delta += to_insert.len() as isize - range.len() as isize;
2156 buffer.edit([range], to_insert, cx);
2157 selection.start += to_insert.len();
2158 selection.end = selection.start;
2159 });
2160 }
2161 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2162 } else {
2163 self.insert(clipboard_text, cx);
2164 }
2165 }
2166 }
2167
2168 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2169 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2170 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2171 self.set_selections(selections, cx);
2172 }
2173 self.request_autoscroll(Autoscroll::Fit, cx);
2174 }
2175 }
2176
2177 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2178 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2179 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2180 self.set_selections(selections, cx);
2181 }
2182 self.request_autoscroll(Autoscroll::Fit, cx);
2183 }
2184 }
2185
2186 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2187 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2188 let mut selections = self.local_selections::<Point>(cx);
2189 for selection in &mut selections {
2190 let start = selection.start.to_display_point(&display_map);
2191 let end = selection.end.to_display_point(&display_map);
2192
2193 if start != end {
2194 selection.end = selection.start.clone();
2195 } else {
2196 let cursor = movement::left(&display_map, start)
2197 .unwrap()
2198 .to_point(&display_map);
2199 selection.start = cursor.clone();
2200 selection.end = cursor;
2201 }
2202 selection.reversed = false;
2203 selection.goal = SelectionGoal::None;
2204 }
2205 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2206 }
2207
2208 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2209 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2210 let mut selections = self.local_selections::<Point>(cx);
2211 for selection in &mut selections {
2212 let head = selection.head().to_display_point(&display_map);
2213 let cursor = movement::left(&display_map, head)
2214 .unwrap()
2215 .to_point(&display_map);
2216 selection.set_head(cursor);
2217 selection.goal = SelectionGoal::None;
2218 }
2219 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2220 }
2221
2222 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2223 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2224 let mut selections = self.local_selections::<Point>(cx);
2225 for selection in &mut selections {
2226 let start = selection.start.to_display_point(&display_map);
2227 let end = selection.end.to_display_point(&display_map);
2228
2229 if start != end {
2230 selection.start = selection.end.clone();
2231 } else {
2232 let cursor = movement::right(&display_map, end)
2233 .unwrap()
2234 .to_point(&display_map);
2235 selection.start = cursor;
2236 selection.end = cursor;
2237 }
2238 selection.reversed = false;
2239 selection.goal = SelectionGoal::None;
2240 }
2241 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2242 }
2243
2244 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2245 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2246 let mut selections = self.local_selections::<Point>(cx);
2247 for selection in &mut selections {
2248 let head = selection.head().to_display_point(&display_map);
2249 let cursor = movement::right(&display_map, head)
2250 .unwrap()
2251 .to_point(&display_map);
2252 selection.set_head(cursor);
2253 selection.goal = SelectionGoal::None;
2254 }
2255 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2256 }
2257
2258 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2259 if matches!(self.mode, EditorMode::SingleLine) {
2260 cx.propagate_action();
2261 return;
2262 }
2263
2264 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2265 let mut selections = self.local_selections::<Point>(cx);
2266 for selection in &mut selections {
2267 let start = selection.start.to_display_point(&display_map);
2268 let end = selection.end.to_display_point(&display_map);
2269 if start != end {
2270 selection.goal = SelectionGoal::None;
2271 }
2272
2273 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2274 let cursor = start.to_point(&display_map);
2275 selection.start = cursor;
2276 selection.end = cursor;
2277 selection.goal = goal;
2278 selection.reversed = false;
2279 }
2280 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2281 }
2282
2283 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2284 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2285 let mut selections = self.local_selections::<Point>(cx);
2286 for selection in &mut selections {
2287 let head = selection.head().to_display_point(&display_map);
2288 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2289 let cursor = head.to_point(&display_map);
2290 selection.set_head(cursor);
2291 selection.goal = goal;
2292 }
2293 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2294 }
2295
2296 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2297 if matches!(self.mode, EditorMode::SingleLine) {
2298 cx.propagate_action();
2299 return;
2300 }
2301
2302 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2303 let mut selections = self.local_selections::<Point>(cx);
2304 for selection in &mut selections {
2305 let start = selection.start.to_display_point(&display_map);
2306 let end = selection.end.to_display_point(&display_map);
2307 if start != end {
2308 selection.goal = SelectionGoal::None;
2309 }
2310
2311 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2312 let cursor = start.to_point(&display_map);
2313 selection.start = cursor;
2314 selection.end = cursor;
2315 selection.goal = goal;
2316 selection.reversed = false;
2317 }
2318 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2319 }
2320
2321 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2322 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2323 let mut selections = self.local_selections::<Point>(cx);
2324 for selection in &mut selections {
2325 let head = selection.head().to_display_point(&display_map);
2326 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2327 let cursor = head.to_point(&display_map);
2328 selection.set_head(cursor);
2329 selection.goal = goal;
2330 }
2331 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2332 }
2333
2334 pub fn move_to_previous_word_boundary(
2335 &mut self,
2336 _: &MoveToPreviousWordBoundary,
2337 cx: &mut ViewContext<Self>,
2338 ) {
2339 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2340 let mut selections = self.local_selections::<Point>(cx);
2341 for selection in &mut selections {
2342 let head = selection.head().to_display_point(&display_map);
2343 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2344 selection.start = cursor.clone();
2345 selection.end = cursor;
2346 selection.reversed = false;
2347 selection.goal = SelectionGoal::None;
2348 }
2349 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2350 }
2351
2352 pub fn select_to_previous_word_boundary(
2353 &mut self,
2354 _: &SelectToPreviousWordBoundary,
2355 cx: &mut ViewContext<Self>,
2356 ) {
2357 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2358 let mut selections = self.local_selections::<Point>(cx);
2359 for selection in &mut selections {
2360 let head = selection.head().to_display_point(&display_map);
2361 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2362 selection.set_head(cursor);
2363 selection.goal = SelectionGoal::None;
2364 }
2365 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2366 }
2367
2368 pub fn delete_to_previous_word_boundary(
2369 &mut self,
2370 _: &DeleteToPreviousWordBoundary,
2371 cx: &mut ViewContext<Self>,
2372 ) {
2373 self.start_transaction(cx);
2374 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2375 let mut selections = self.local_selections::<Point>(cx);
2376 for selection in &mut selections {
2377 if selection.is_empty() {
2378 let head = selection.head().to_display_point(&display_map);
2379 let cursor =
2380 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2381 selection.set_head(cursor);
2382 selection.goal = SelectionGoal::None;
2383 }
2384 }
2385 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2386 self.insert("", cx);
2387 self.end_transaction(cx);
2388 }
2389
2390 pub fn move_to_next_word_boundary(
2391 &mut self,
2392 _: &MoveToNextWordBoundary,
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::next_word_boundary(&display_map, head).to_point(&display_map);
2400 selection.start = cursor;
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_next_word_boundary(
2409 &mut self,
2410 _: &SelectToNextWordBoundary,
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::next_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_next_word_boundary(
2425 &mut self,
2426 _: &DeleteToNextWordBoundary,
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::next_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_beginning_of_line(
2447 &mut self,
2448 _: &MoveToBeginningOfLine,
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 new_head = movement::line_beginning(&display_map, head, true);
2456 let cursor = new_head.to_point(&display_map);
2457 selection.start = cursor;
2458 selection.end = cursor;
2459 selection.reversed = false;
2460 selection.goal = SelectionGoal::None;
2461 }
2462 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2463 }
2464
2465 pub fn select_to_beginning_of_line(
2466 &mut self,
2467 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2468 cx: &mut ViewContext<Self>,
2469 ) {
2470 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2471 let mut selections = self.local_selections::<Point>(cx);
2472 for selection in &mut selections {
2473 let head = selection.head().to_display_point(&display_map);
2474 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2475 selection.set_head(new_head.to_point(&display_map));
2476 selection.goal = SelectionGoal::None;
2477 }
2478 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2479 }
2480
2481 pub fn delete_to_beginning_of_line(
2482 &mut self,
2483 _: &DeleteToBeginningOfLine,
2484 cx: &mut ViewContext<Self>,
2485 ) {
2486 self.start_transaction(cx);
2487 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2488 self.backspace(&Backspace, cx);
2489 self.end_transaction(cx);
2490 }
2491
2492 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2493 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2494 let mut selections = self.local_selections::<Point>(cx);
2495 {
2496 for selection in &mut selections {
2497 let head = selection.head().to_display_point(&display_map);
2498 let new_head = movement::line_end(&display_map, head);
2499 let anchor = new_head.to_point(&display_map);
2500 selection.start = anchor.clone();
2501 selection.end = anchor;
2502 selection.reversed = false;
2503 selection.goal = SelectionGoal::None;
2504 }
2505 }
2506 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2507 }
2508
2509 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2510 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2511 let mut selections = self.local_selections::<Point>(cx);
2512 for selection in &mut selections {
2513 let head = selection.head().to_display_point(&display_map);
2514 let new_head = movement::line_end(&display_map, head);
2515 selection.set_head(new_head.to_point(&display_map));
2516 selection.goal = SelectionGoal::None;
2517 }
2518 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2519 }
2520
2521 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2522 self.start_transaction(cx);
2523 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2524 self.delete(&Delete, cx);
2525 self.end_transaction(cx);
2526 }
2527
2528 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2529 self.start_transaction(cx);
2530 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2531 self.cut(&Cut, cx);
2532 self.end_transaction(cx);
2533 }
2534
2535 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2536 if matches!(self.mode, EditorMode::SingleLine) {
2537 cx.propagate_action();
2538 return;
2539 }
2540
2541 let selection = Selection {
2542 id: post_inc(&mut self.next_selection_id),
2543 start: 0,
2544 end: 0,
2545 reversed: false,
2546 goal: SelectionGoal::None,
2547 };
2548 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2549 }
2550
2551 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2552 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2553 selection.set_head(Point::zero());
2554 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2555 }
2556
2557 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2558 if matches!(self.mode, EditorMode::SingleLine) {
2559 cx.propagate_action();
2560 return;
2561 }
2562
2563 let cursor = self.buffer.read(cx).read(cx).len();
2564 let selection = Selection {
2565 id: post_inc(&mut self.next_selection_id),
2566 start: cursor,
2567 end: cursor,
2568 reversed: false,
2569 goal: SelectionGoal::None,
2570 };
2571 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2572 }
2573
2574 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2575 self.nav_history = nav_history;
2576 }
2577
2578 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2579 self.nav_history.as_ref()
2580 }
2581
2582 fn push_to_nav_history(
2583 &self,
2584 position: Anchor,
2585 new_position: Option<Point>,
2586 cx: &mut ViewContext<Self>,
2587 ) {
2588 if let Some(nav_history) = &self.nav_history {
2589 let buffer = self.buffer.read(cx).read(cx);
2590 let offset = position.to_offset(&buffer);
2591 let point = position.to_point(&buffer);
2592 drop(buffer);
2593
2594 if let Some(new_position) = new_position {
2595 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2596 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2597 return;
2598 }
2599 }
2600
2601 nav_history.push(Some(NavigationData {
2602 anchor: position,
2603 offset,
2604 }));
2605 }
2606 }
2607
2608 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2609 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2610 selection.set_head(self.buffer.read(cx).read(cx).len());
2611 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2612 }
2613
2614 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2615 let selection = Selection {
2616 id: post_inc(&mut self.next_selection_id),
2617 start: 0,
2618 end: self.buffer.read(cx).read(cx).len(),
2619 reversed: false,
2620 goal: SelectionGoal::None,
2621 };
2622 self.update_selections(vec![selection], None, cx);
2623 }
2624
2625 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2626 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2627 let mut selections = self.local_selections::<Point>(cx);
2628 let max_point = display_map.buffer_snapshot.max_point();
2629 for selection in &mut selections {
2630 let rows = selection.spanned_rows(true, &display_map);
2631 selection.start = Point::new(rows.start, 0);
2632 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2633 selection.reversed = false;
2634 }
2635 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2636 }
2637
2638 pub fn split_selection_into_lines(
2639 &mut self,
2640 _: &SplitSelectionIntoLines,
2641 cx: &mut ViewContext<Self>,
2642 ) {
2643 let mut to_unfold = Vec::new();
2644 let mut new_selections = Vec::new();
2645 {
2646 let selections = self.local_selections::<Point>(cx);
2647 let buffer = self.buffer.read(cx).read(cx);
2648 for selection in selections {
2649 for row in selection.start.row..selection.end.row {
2650 let cursor = Point::new(row, buffer.line_len(row));
2651 new_selections.push(Selection {
2652 id: post_inc(&mut self.next_selection_id),
2653 start: cursor,
2654 end: cursor,
2655 reversed: false,
2656 goal: SelectionGoal::None,
2657 });
2658 }
2659 new_selections.push(Selection {
2660 id: selection.id,
2661 start: selection.end,
2662 end: selection.end,
2663 reversed: false,
2664 goal: SelectionGoal::None,
2665 });
2666 to_unfold.push(selection.start..selection.end);
2667 }
2668 }
2669 self.unfold_ranges(to_unfold, cx);
2670 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2671 }
2672
2673 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2674 self.add_selection(true, cx);
2675 }
2676
2677 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2678 self.add_selection(false, cx);
2679 }
2680
2681 fn add_selection(&mut self, above: bool, 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 mut state = self.add_selections_state.take().unwrap_or_else(|| {
2685 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2686 let range = oldest_selection.display_range(&display_map).sorted();
2687 let columns = cmp::min(range.start.column(), range.end.column())
2688 ..cmp::max(range.start.column(), range.end.column());
2689
2690 selections.clear();
2691 let mut stack = Vec::new();
2692 for row in range.start.row()..=range.end.row() {
2693 if let Some(selection) = self.build_columnar_selection(
2694 &display_map,
2695 row,
2696 &columns,
2697 oldest_selection.reversed,
2698 ) {
2699 stack.push(selection.id);
2700 selections.push(selection);
2701 }
2702 }
2703
2704 if above {
2705 stack.reverse();
2706 }
2707
2708 AddSelectionsState { above, stack }
2709 });
2710
2711 let last_added_selection = *state.stack.last().unwrap();
2712 let mut new_selections = Vec::new();
2713 if above == state.above {
2714 let end_row = if above {
2715 0
2716 } else {
2717 display_map.max_point().row()
2718 };
2719
2720 'outer: for selection in selections {
2721 if selection.id == last_added_selection {
2722 let range = selection.display_range(&display_map).sorted();
2723 debug_assert_eq!(range.start.row(), range.end.row());
2724 let mut row = range.start.row();
2725 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2726 {
2727 start..end
2728 } else {
2729 cmp::min(range.start.column(), range.end.column())
2730 ..cmp::max(range.start.column(), range.end.column())
2731 };
2732
2733 while row != end_row {
2734 if above {
2735 row -= 1;
2736 } else {
2737 row += 1;
2738 }
2739
2740 if let Some(new_selection) = self.build_columnar_selection(
2741 &display_map,
2742 row,
2743 &columns,
2744 selection.reversed,
2745 ) {
2746 state.stack.push(new_selection.id);
2747 if above {
2748 new_selections.push(new_selection);
2749 new_selections.push(selection);
2750 } else {
2751 new_selections.push(selection);
2752 new_selections.push(new_selection);
2753 }
2754
2755 continue 'outer;
2756 }
2757 }
2758 }
2759
2760 new_selections.push(selection);
2761 }
2762 } else {
2763 new_selections = selections;
2764 new_selections.retain(|s| s.id != last_added_selection);
2765 state.stack.pop();
2766 }
2767
2768 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2769 if state.stack.len() > 1 {
2770 self.add_selections_state = Some(state);
2771 }
2772 }
2773
2774 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2775 let replace_newest = action.0;
2776 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2777 let buffer = &display_map.buffer_snapshot;
2778 let mut selections = self.local_selections::<usize>(cx);
2779 if let Some(mut select_next_state) = self.select_next_state.take() {
2780 let query = &select_next_state.query;
2781 if !select_next_state.done {
2782 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2783 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2784 let mut next_selected_range = None;
2785
2786 let bytes_after_last_selection =
2787 buffer.bytes_in_range(last_selection.end..buffer.len());
2788 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2789 let query_matches = query
2790 .stream_find_iter(bytes_after_last_selection)
2791 .map(|result| (last_selection.end, result))
2792 .chain(
2793 query
2794 .stream_find_iter(bytes_before_first_selection)
2795 .map(|result| (0, result)),
2796 );
2797 for (start_offset, query_match) in query_matches {
2798 let query_match = query_match.unwrap(); // can only fail due to I/O
2799 let offset_range =
2800 start_offset + query_match.start()..start_offset + query_match.end();
2801 let display_range = offset_range.start.to_display_point(&display_map)
2802 ..offset_range.end.to_display_point(&display_map);
2803
2804 if !select_next_state.wordwise
2805 || (!movement::is_inside_word(&display_map, display_range.start)
2806 && !movement::is_inside_word(&display_map, display_range.end))
2807 {
2808 next_selected_range = Some(offset_range);
2809 break;
2810 }
2811 }
2812
2813 if let Some(next_selected_range) = next_selected_range {
2814 if replace_newest {
2815 if let Some(newest_id) =
2816 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2817 {
2818 selections.retain(|s| s.id != newest_id);
2819 }
2820 }
2821 selections.push(Selection {
2822 id: post_inc(&mut self.next_selection_id),
2823 start: next_selected_range.start,
2824 end: next_selected_range.end,
2825 reversed: false,
2826 goal: SelectionGoal::None,
2827 });
2828 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2829 } else {
2830 select_next_state.done = true;
2831 }
2832 }
2833
2834 self.select_next_state = Some(select_next_state);
2835 } else if selections.len() == 1 {
2836 let selection = selections.last_mut().unwrap();
2837 if selection.start == selection.end {
2838 let word_range = movement::surrounding_word(
2839 &display_map,
2840 selection.start.to_display_point(&display_map),
2841 );
2842 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2843 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2844 selection.goal = SelectionGoal::None;
2845 selection.reversed = false;
2846
2847 let query = buffer
2848 .text_for_range(selection.start..selection.end)
2849 .collect::<String>();
2850 let select_state = SelectNextState {
2851 query: AhoCorasick::new_auto_configured(&[query]),
2852 wordwise: true,
2853 done: false,
2854 };
2855 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2856 self.select_next_state = Some(select_state);
2857 } else {
2858 let query = buffer
2859 .text_for_range(selection.start..selection.end)
2860 .collect::<String>();
2861 self.select_next_state = Some(SelectNextState {
2862 query: AhoCorasick::new_auto_configured(&[query]),
2863 wordwise: false,
2864 done: false,
2865 });
2866 self.select_next(action, cx);
2867 }
2868 }
2869 }
2870
2871 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2872 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2873 // as that portion won't be used for detecting if a line is a comment.
2874 let full_comment_prefix =
2875 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2876 prefix.to_string()
2877 } else {
2878 return;
2879 };
2880 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2881 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2882
2883 self.start_transaction(cx);
2884 let mut selections = self.local_selections::<Point>(cx);
2885 let mut all_selection_lines_are_comments = true;
2886 let mut edit_ranges = Vec::new();
2887 let mut last_toggled_row = None;
2888 self.buffer.update(cx, |buffer, cx| {
2889 for selection in &mut selections {
2890 edit_ranges.clear();
2891 let snapshot = buffer.snapshot(cx);
2892
2893 let end_row =
2894 if selection.end.row > selection.start.row && selection.end.column == 0 {
2895 selection.end.row
2896 } else {
2897 selection.end.row + 1
2898 };
2899
2900 for row in selection.start.row..end_row {
2901 // If multiple selections contain a given row, avoid processing that
2902 // row more than once.
2903 if last_toggled_row == Some(row) {
2904 continue;
2905 } else {
2906 last_toggled_row = Some(row);
2907 }
2908
2909 if snapshot.is_line_blank(row) {
2910 continue;
2911 }
2912
2913 let start = Point::new(row, snapshot.indent_column_for_line(row));
2914 let mut line_bytes = snapshot
2915 .bytes_in_range(start..snapshot.max_point())
2916 .flatten()
2917 .copied();
2918
2919 // If this line currently begins with the line comment prefix, then record
2920 // the range containing the prefix.
2921 if all_selection_lines_are_comments
2922 && line_bytes
2923 .by_ref()
2924 .take(comment_prefix.len())
2925 .eq(comment_prefix.bytes())
2926 {
2927 // Include any whitespace that matches the comment prefix.
2928 let matching_whitespace_len = line_bytes
2929 .zip(comment_prefix_whitespace.bytes())
2930 .take_while(|(a, b)| a == b)
2931 .count() as u32;
2932 let end = Point::new(
2933 row,
2934 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2935 );
2936 edit_ranges.push(start..end);
2937 }
2938 // If this line does not begin with the line comment prefix, then record
2939 // the position where the prefix should be inserted.
2940 else {
2941 all_selection_lines_are_comments = false;
2942 edit_ranges.push(start..start);
2943 }
2944 }
2945
2946 if !edit_ranges.is_empty() {
2947 if all_selection_lines_are_comments {
2948 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2949 } else {
2950 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2951 let edit_ranges = edit_ranges.iter().map(|range| {
2952 let position = Point::new(range.start.row, min_column);
2953 position..position
2954 });
2955 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2956 }
2957 }
2958 }
2959 });
2960
2961 self.update_selections(
2962 self.local_selections::<usize>(cx),
2963 Some(Autoscroll::Fit),
2964 cx,
2965 );
2966 self.end_transaction(cx);
2967 }
2968
2969 pub fn select_larger_syntax_node(
2970 &mut self,
2971 _: &SelectLargerSyntaxNode,
2972 cx: &mut ViewContext<Self>,
2973 ) {
2974 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2975 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2976 let buffer = self.buffer.read(cx).snapshot(cx);
2977
2978 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2979 let mut selected_larger_node = false;
2980 let new_selections = old_selections
2981 .iter()
2982 .map(|selection| {
2983 let old_range = selection.start..selection.end;
2984 let mut new_range = old_range.clone();
2985 while let Some(containing_range) =
2986 buffer.range_for_syntax_ancestor(new_range.clone())
2987 {
2988 new_range = containing_range;
2989 if !display_map.intersects_fold(new_range.start)
2990 && !display_map.intersects_fold(new_range.end)
2991 {
2992 break;
2993 }
2994 }
2995
2996 selected_larger_node |= new_range != old_range;
2997 Selection {
2998 id: selection.id,
2999 start: new_range.start,
3000 end: new_range.end,
3001 goal: SelectionGoal::None,
3002 reversed: selection.reversed,
3003 }
3004 })
3005 .collect::<Vec<_>>();
3006
3007 if selected_larger_node {
3008 stack.push(old_selections);
3009 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3010 }
3011 self.select_larger_syntax_node_stack = stack;
3012 }
3013
3014 pub fn select_smaller_syntax_node(
3015 &mut self,
3016 _: &SelectSmallerSyntaxNode,
3017 cx: &mut ViewContext<Self>,
3018 ) {
3019 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3020 if let Some(selections) = stack.pop() {
3021 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3022 }
3023 self.select_larger_syntax_node_stack = stack;
3024 }
3025
3026 pub fn move_to_enclosing_bracket(
3027 &mut self,
3028 _: &MoveToEnclosingBracket,
3029 cx: &mut ViewContext<Self>,
3030 ) {
3031 let mut selections = self.local_selections::<usize>(cx);
3032 let buffer = self.buffer.read(cx).snapshot(cx);
3033 for selection in &mut selections {
3034 if let Some((open_range, close_range)) =
3035 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3036 {
3037 let close_range = close_range.to_inclusive();
3038 let destination = if close_range.contains(&selection.start)
3039 && close_range.contains(&selection.end)
3040 {
3041 open_range.end
3042 } else {
3043 *close_range.start()
3044 };
3045 selection.start = destination;
3046 selection.end = destination;
3047 }
3048 }
3049
3050 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3051 }
3052
3053 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3054 let buffer = self.buffer.read(cx).snapshot(cx);
3055 let selection = self.newest_selection::<usize>(&buffer);
3056 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3057 active_diagnostics
3058 .primary_range
3059 .to_offset(&buffer)
3060 .to_inclusive()
3061 });
3062 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3063 if active_primary_range.contains(&selection.head()) {
3064 *active_primary_range.end()
3065 } else {
3066 selection.head()
3067 }
3068 } else {
3069 selection.head()
3070 };
3071
3072 loop {
3073 let next_group = buffer
3074 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3075 .find_map(|entry| {
3076 if entry.diagnostic.is_primary
3077 && !entry.range.is_empty()
3078 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3079 {
3080 Some((entry.range, entry.diagnostic.group_id))
3081 } else {
3082 None
3083 }
3084 });
3085
3086 if let Some((primary_range, group_id)) = next_group {
3087 self.activate_diagnostics(group_id, cx);
3088 self.update_selections(
3089 vec![Selection {
3090 id: selection.id,
3091 start: primary_range.start,
3092 end: primary_range.start,
3093 reversed: false,
3094 goal: SelectionGoal::None,
3095 }],
3096 Some(Autoscroll::Center),
3097 cx,
3098 );
3099 break;
3100 } else if search_start == 0 {
3101 break;
3102 } else {
3103 // Cycle around to the start of the buffer.
3104 search_start = 0;
3105 }
3106 }
3107 }
3108
3109 pub fn go_to_definition(
3110 workspace: &mut Workspace,
3111 _: &GoToDefinition,
3112 cx: &mut ViewContext<Workspace>,
3113 ) {
3114 let active_item = workspace.active_item(cx);
3115 let editor_handle = if let Some(editor) = active_item
3116 .as_ref()
3117 .and_then(|item| item.act_as::<Self>(cx))
3118 {
3119 editor
3120 } else {
3121 return;
3122 };
3123
3124 let editor = editor_handle.read(cx);
3125 let buffer = editor.buffer.read(cx);
3126 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3127 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3128 let definitions = workspace
3129 .project()
3130 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3131 cx.spawn(|workspace, mut cx| async move {
3132 let definitions = definitions.await?;
3133 workspace.update(&mut cx, |workspace, cx| {
3134 for definition in definitions {
3135 let range = definition
3136 .target_range
3137 .to_offset(definition.target_buffer.read(cx));
3138 let target_editor_handle = workspace
3139 .open_item(BufferItemHandle(definition.target_buffer), cx)
3140 .downcast::<Self>()
3141 .unwrap();
3142
3143 target_editor_handle.update(cx, |target_editor, cx| {
3144 // When selecting a definition in a different buffer, disable the nav history
3145 // to avoid creating a history entry at the previous cursor location.
3146 let disabled_history = if editor_handle == target_editor_handle {
3147 None
3148 } else {
3149 target_editor.nav_history.take()
3150 };
3151 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3152 if disabled_history.is_some() {
3153 target_editor.nav_history = disabled_history;
3154 }
3155 });
3156 }
3157 });
3158
3159 Ok::<(), anyhow::Error>(())
3160 })
3161 .detach_and_log_err(cx);
3162 }
3163
3164 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3165 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3166 let buffer = self.buffer.read(cx).snapshot(cx);
3167 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3168 let is_valid = buffer
3169 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3170 .any(|entry| {
3171 entry.diagnostic.is_primary
3172 && !entry.range.is_empty()
3173 && entry.range.start == primary_range_start
3174 && entry.diagnostic.message == active_diagnostics.primary_message
3175 });
3176
3177 if is_valid != active_diagnostics.is_valid {
3178 active_diagnostics.is_valid = is_valid;
3179 let mut new_styles = HashMap::default();
3180 for (block_id, diagnostic) in &active_diagnostics.blocks {
3181 new_styles.insert(
3182 *block_id,
3183 diagnostic_block_renderer(
3184 diagnostic.clone(),
3185 is_valid,
3186 self.build_settings.clone(),
3187 ),
3188 );
3189 }
3190 self.display_map
3191 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3192 }
3193 }
3194 }
3195
3196 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3197 self.dismiss_diagnostics(cx);
3198 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3199 let buffer = self.buffer.read(cx).snapshot(cx);
3200
3201 let mut primary_range = None;
3202 let mut primary_message = None;
3203 let mut group_end = Point::zero();
3204 let diagnostic_group = buffer
3205 .diagnostic_group::<Point>(group_id)
3206 .map(|entry| {
3207 if entry.range.end > group_end {
3208 group_end = entry.range.end;
3209 }
3210 if entry.diagnostic.is_primary {
3211 primary_range = Some(entry.range.clone());
3212 primary_message = Some(entry.diagnostic.message.clone());
3213 }
3214 entry
3215 })
3216 .collect::<Vec<_>>();
3217 let primary_range = primary_range.unwrap();
3218 let primary_message = primary_message.unwrap();
3219 let primary_range =
3220 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3221
3222 let blocks = display_map
3223 .insert_blocks(
3224 diagnostic_group.iter().map(|entry| {
3225 let build_settings = self.build_settings.clone();
3226 let diagnostic = entry.diagnostic.clone();
3227 let message_height = diagnostic.message.lines().count() as u8;
3228
3229 BlockProperties {
3230 position: buffer.anchor_after(entry.range.start),
3231 height: message_height,
3232 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3233 disposition: BlockDisposition::Below,
3234 }
3235 }),
3236 cx,
3237 )
3238 .into_iter()
3239 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3240 .collect();
3241
3242 Some(ActiveDiagnosticGroup {
3243 primary_range,
3244 primary_message,
3245 blocks,
3246 is_valid: true,
3247 })
3248 });
3249 }
3250
3251 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3252 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3253 self.display_map.update(cx, |display_map, cx| {
3254 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3255 });
3256 cx.notify();
3257 }
3258 }
3259
3260 fn build_columnar_selection(
3261 &mut self,
3262 display_map: &DisplaySnapshot,
3263 row: u32,
3264 columns: &Range<u32>,
3265 reversed: bool,
3266 ) -> Option<Selection<Point>> {
3267 let is_empty = columns.start == columns.end;
3268 let line_len = display_map.line_len(row);
3269 if columns.start < line_len || (is_empty && columns.start == line_len) {
3270 let start = DisplayPoint::new(row, columns.start);
3271 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3272 Some(Selection {
3273 id: post_inc(&mut self.next_selection_id),
3274 start: start.to_point(display_map),
3275 end: end.to_point(display_map),
3276 reversed,
3277 goal: SelectionGoal::ColumnRange {
3278 start: columns.start,
3279 end: columns.end,
3280 },
3281 })
3282 } else {
3283 None
3284 }
3285 }
3286
3287 pub fn local_selections_in_range(
3288 &self,
3289 range: Range<Anchor>,
3290 display_map: &DisplaySnapshot,
3291 ) -> Vec<Selection<Point>> {
3292 let buffer = &display_map.buffer_snapshot;
3293
3294 let start_ix = match self
3295 .selections
3296 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3297 {
3298 Ok(ix) | Err(ix) => ix,
3299 };
3300 let end_ix = match self
3301 .selections
3302 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3303 {
3304 Ok(ix) => ix + 1,
3305 Err(ix) => ix,
3306 };
3307
3308 fn point_selection(
3309 selection: &Selection<Anchor>,
3310 buffer: &MultiBufferSnapshot,
3311 ) -> Selection<Point> {
3312 let start = selection.start.to_point(&buffer);
3313 let end = selection.end.to_point(&buffer);
3314 Selection {
3315 id: selection.id,
3316 start,
3317 end,
3318 reversed: selection.reversed,
3319 goal: selection.goal,
3320 }
3321 }
3322
3323 self.selections[start_ix..end_ix]
3324 .iter()
3325 .chain(
3326 self.pending_selection
3327 .as_ref()
3328 .map(|pending| &pending.selection),
3329 )
3330 .map(|s| point_selection(s, &buffer))
3331 .collect()
3332 }
3333
3334 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3335 where
3336 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3337 {
3338 let buffer = self.buffer.read(cx).snapshot(cx);
3339 let mut selections = self
3340 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3341 .peekable();
3342
3343 let mut pending_selection = self.pending_selection::<D>(&buffer);
3344
3345 iter::from_fn(move || {
3346 if let Some(pending) = pending_selection.as_mut() {
3347 while let Some(next_selection) = selections.peek() {
3348 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3349 let next_selection = selections.next().unwrap();
3350 if next_selection.start < pending.start {
3351 pending.start = next_selection.start;
3352 }
3353 if next_selection.end > pending.end {
3354 pending.end = next_selection.end;
3355 }
3356 } else if next_selection.end < pending.start {
3357 return selections.next();
3358 } else {
3359 break;
3360 }
3361 }
3362
3363 pending_selection.take()
3364 } else {
3365 selections.next()
3366 }
3367 })
3368 .collect()
3369 }
3370
3371 fn resolve_selections<'a, D, I>(
3372 &self,
3373 selections: I,
3374 snapshot: &MultiBufferSnapshot,
3375 ) -> impl 'a + Iterator<Item = Selection<D>>
3376 where
3377 D: TextDimension + Ord + Sub<D, Output = D>,
3378 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3379 {
3380 let (to_summarize, selections) = selections.into_iter().tee();
3381 let mut summaries = snapshot
3382 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3383 .into_iter();
3384 selections.map(move |s| Selection {
3385 id: s.id,
3386 start: summaries.next().unwrap(),
3387 end: summaries.next().unwrap(),
3388 reversed: s.reversed,
3389 goal: s.goal,
3390 })
3391 }
3392
3393 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3394 &self,
3395 snapshot: &MultiBufferSnapshot,
3396 ) -> Option<Selection<D>> {
3397 self.pending_selection
3398 .as_ref()
3399 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3400 }
3401
3402 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3403 &self,
3404 selection: &Selection<Anchor>,
3405 buffer: &MultiBufferSnapshot,
3406 ) -> Selection<D> {
3407 Selection {
3408 id: selection.id,
3409 start: selection.start.summary::<D>(&buffer),
3410 end: selection.end.summary::<D>(&buffer),
3411 reversed: selection.reversed,
3412 goal: selection.goal,
3413 }
3414 }
3415
3416 fn selection_count<'a>(&self) -> usize {
3417 let mut count = self.selections.len();
3418 if self.pending_selection.is_some() {
3419 count += 1;
3420 }
3421 count
3422 }
3423
3424 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3425 &self,
3426 snapshot: &MultiBufferSnapshot,
3427 ) -> Selection<D> {
3428 self.selections
3429 .iter()
3430 .min_by_key(|s| s.id)
3431 .map(|selection| self.resolve_selection(selection, snapshot))
3432 .or_else(|| self.pending_selection(snapshot))
3433 .unwrap()
3434 }
3435
3436 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3437 &self,
3438 snapshot: &MultiBufferSnapshot,
3439 ) -> Selection<D> {
3440 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3441 }
3442
3443 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3444 self.pending_selection
3445 .as_ref()
3446 .map(|s| &s.selection)
3447 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3448 }
3449
3450 pub fn update_selections<T>(
3451 &mut self,
3452 mut selections: Vec<Selection<T>>,
3453 autoscroll: Option<Autoscroll>,
3454 cx: &mut ViewContext<Self>,
3455 ) where
3456 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3457 {
3458 let buffer = self.buffer.read(cx).snapshot(cx);
3459 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3460 selections.sort_unstable_by_key(|s| s.start);
3461
3462 // Merge overlapping selections.
3463 let mut i = 1;
3464 while i < selections.len() {
3465 if selections[i - 1].end >= selections[i].start {
3466 let removed = selections.remove(i);
3467 if removed.start < selections[i - 1].start {
3468 selections[i - 1].start = removed.start;
3469 }
3470 if removed.end > selections[i - 1].end {
3471 selections[i - 1].end = removed.end;
3472 }
3473 } else {
3474 i += 1;
3475 }
3476 }
3477
3478 self.pending_selection = None;
3479 self.add_selections_state = None;
3480 self.select_next_state = None;
3481 self.select_larger_syntax_node_stack.clear();
3482 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3483 let all_selections_inside_autoclose_ranges =
3484 if selections.len() == autoclose_pair.ranges.len() {
3485 selections
3486 .iter()
3487 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3488 .all(|(selection, autoclose_range)| {
3489 let head = selection.head().to_point(&buffer);
3490 autoclose_range.start <= head && autoclose_range.end >= head
3491 })
3492 } else {
3493 false
3494 };
3495
3496 if all_selections_inside_autoclose_ranges {
3497 break;
3498 } else {
3499 self.autoclose_stack.pop();
3500 }
3501 }
3502
3503 if let Some(old_cursor_position) = old_cursor_position {
3504 let new_cursor_position = selections
3505 .iter()
3506 .max_by_key(|s| s.id)
3507 .map(|s| s.head().to_point(&buffer));
3508 if new_cursor_position.is_some() {
3509 self.push_to_nav_history(old_cursor_position, new_cursor_position, cx);
3510 }
3511 }
3512
3513 if let Some(autoscroll) = autoscroll {
3514 self.request_autoscroll(autoscroll, cx);
3515 }
3516 self.pause_cursor_blinking(cx);
3517
3518 self.set_selections(
3519 Arc::from_iter(selections.into_iter().map(|selection| {
3520 let end_bias = if selection.end > selection.start {
3521 Bias::Left
3522 } else {
3523 Bias::Right
3524 };
3525 Selection {
3526 id: selection.id,
3527 start: buffer.anchor_after(selection.start),
3528 end: buffer.anchor_at(selection.end, end_bias),
3529 reversed: selection.reversed,
3530 goal: selection.goal,
3531 }
3532 })),
3533 cx,
3534 );
3535 }
3536
3537 /// Compute new ranges for any selections that were located in excerpts that have
3538 /// since been removed.
3539 ///
3540 /// Returns a `HashMap` indicating which selections whose former head position
3541 /// was no longer present. The keys of the map are selection ids. The values are
3542 /// the id of the new excerpt where the head of the selection has been moved.
3543 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3544 let snapshot = self.buffer.read(cx).read(cx);
3545 let anchors_with_status = snapshot.refresh_anchors(
3546 self.selections
3547 .iter()
3548 .flat_map(|selection| [&selection.start, &selection.end]),
3549 );
3550 let offsets =
3551 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3552 let offsets = offsets.chunks(2);
3553 let statuses = anchors_with_status
3554 .chunks(2)
3555 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3556
3557 let mut selections_with_lost_position = HashMap::default();
3558 let new_selections = offsets
3559 .zip(statuses)
3560 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3561 let selection = &self.selections[selection_ix];
3562 let kept_head = if selection.reversed {
3563 kept_start
3564 } else {
3565 kept_end
3566 };
3567 if !kept_head {
3568 selections_with_lost_position
3569 .insert(selection.id, selection.head().excerpt_id.clone());
3570 }
3571
3572 Selection {
3573 id: selection.id,
3574 start: offsets[0],
3575 end: offsets[1],
3576 reversed: selection.reversed,
3577 goal: selection.goal,
3578 }
3579 })
3580 .collect();
3581 drop(snapshot);
3582 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3583 selections_with_lost_position
3584 }
3585
3586 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3587 self.selections = selections;
3588 if self.focused {
3589 self.buffer.update(cx, |buffer, cx| {
3590 buffer.set_active_selections(&self.selections, cx)
3591 });
3592 }
3593 cx.emit(Event::SelectionsChanged);
3594 }
3595
3596 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3597 self.autoscroll_request = Some(autoscroll);
3598 cx.notify();
3599 }
3600
3601 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3602 self.start_transaction_at(Instant::now(), cx);
3603 }
3604
3605 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3606 self.end_selection(cx);
3607 if let Some(tx_id) = self
3608 .buffer
3609 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3610 {
3611 self.selection_history
3612 .insert(tx_id, (self.selections.clone(), None));
3613 }
3614 }
3615
3616 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3617 self.end_transaction_at(Instant::now(), cx);
3618 }
3619
3620 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3621 if let Some(tx_id) = self
3622 .buffer
3623 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3624 {
3625 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3626 *end_selections = Some(self.selections.clone());
3627 } else {
3628 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3629 }
3630 }
3631 }
3632
3633 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3634 log::info!("Editor::page_up");
3635 }
3636
3637 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3638 log::info!("Editor::page_down");
3639 }
3640
3641 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3642 let mut fold_ranges = Vec::new();
3643
3644 let selections = self.local_selections::<Point>(cx);
3645 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3646 for selection in selections {
3647 let range = selection.display_range(&display_map).sorted();
3648 let buffer_start_row = range.start.to_point(&display_map).row;
3649
3650 for row in (0..=range.end.row()).rev() {
3651 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3652 let fold_range = self.foldable_range_for_line(&display_map, row);
3653 if fold_range.end.row >= buffer_start_row {
3654 fold_ranges.push(fold_range);
3655 if row <= range.start.row() {
3656 break;
3657 }
3658 }
3659 }
3660 }
3661 }
3662
3663 self.fold_ranges(fold_ranges, cx);
3664 }
3665
3666 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3667 let selections = self.local_selections::<Point>(cx);
3668 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3669 let buffer = &display_map.buffer_snapshot;
3670 let ranges = selections
3671 .iter()
3672 .map(|s| {
3673 let range = s.display_range(&display_map).sorted();
3674 let mut start = range.start.to_point(&display_map);
3675 let mut end = range.end.to_point(&display_map);
3676 start.column = 0;
3677 end.column = buffer.line_len(end.row);
3678 start..end
3679 })
3680 .collect::<Vec<_>>();
3681 self.unfold_ranges(ranges, cx);
3682 }
3683
3684 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3685 let max_point = display_map.max_point();
3686 if display_row >= max_point.row() {
3687 false
3688 } else {
3689 let (start_indent, is_blank) = display_map.line_indent(display_row);
3690 if is_blank {
3691 false
3692 } else {
3693 for display_row in display_row + 1..=max_point.row() {
3694 let (indent, is_blank) = display_map.line_indent(display_row);
3695 if !is_blank {
3696 return indent > start_indent;
3697 }
3698 }
3699 false
3700 }
3701 }
3702 }
3703
3704 fn foldable_range_for_line(
3705 &self,
3706 display_map: &DisplaySnapshot,
3707 start_row: u32,
3708 ) -> Range<Point> {
3709 let max_point = display_map.max_point();
3710
3711 let (start_indent, _) = display_map.line_indent(start_row);
3712 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3713 let mut end = None;
3714 for row in start_row + 1..=max_point.row() {
3715 let (indent, is_blank) = display_map.line_indent(row);
3716 if !is_blank && indent <= start_indent {
3717 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3718 break;
3719 }
3720 }
3721
3722 let end = end.unwrap_or(max_point);
3723 return start.to_point(display_map)..end.to_point(display_map);
3724 }
3725
3726 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3727 let selections = self.local_selections::<Point>(cx);
3728 let ranges = selections.into_iter().map(|s| s.start..s.end);
3729 self.fold_ranges(ranges, cx);
3730 }
3731
3732 fn fold_ranges<T: ToOffset>(
3733 &mut self,
3734 ranges: impl IntoIterator<Item = Range<T>>,
3735 cx: &mut ViewContext<Self>,
3736 ) {
3737 let mut ranges = ranges.into_iter().peekable();
3738 if ranges.peek().is_some() {
3739 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3740 self.request_autoscroll(Autoscroll::Fit, cx);
3741 cx.notify();
3742 }
3743 }
3744
3745 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3746 if !ranges.is_empty() {
3747 self.display_map
3748 .update(cx, |map, cx| map.unfold(ranges, cx));
3749 self.request_autoscroll(Autoscroll::Fit, cx);
3750 cx.notify();
3751 }
3752 }
3753
3754 pub fn insert_blocks(
3755 &mut self,
3756 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3757 cx: &mut ViewContext<Self>,
3758 ) -> Vec<BlockId> {
3759 let blocks = self
3760 .display_map
3761 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3762 self.request_autoscroll(Autoscroll::Fit, cx);
3763 blocks
3764 }
3765
3766 pub fn replace_blocks(
3767 &mut self,
3768 blocks: HashMap<BlockId, RenderBlock>,
3769 cx: &mut ViewContext<Self>,
3770 ) {
3771 self.display_map
3772 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3773 self.request_autoscroll(Autoscroll::Fit, cx);
3774 }
3775
3776 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3777 self.display_map.update(cx, |display_map, cx| {
3778 display_map.remove_blocks(block_ids, cx)
3779 });
3780 }
3781
3782 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3783 self.display_map
3784 .update(cx, |map, cx| map.snapshot(cx))
3785 .longest_row()
3786 }
3787
3788 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3789 self.display_map
3790 .update(cx, |map, cx| map.snapshot(cx))
3791 .max_point()
3792 }
3793
3794 pub fn text(&self, cx: &AppContext) -> String {
3795 self.buffer.read(cx).read(cx).text()
3796 }
3797
3798 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3799 self.display_map
3800 .update(cx, |map, cx| map.snapshot(cx))
3801 .text()
3802 }
3803
3804 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3805 self.display_map
3806 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3807 }
3808
3809 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
3810 self.highlighted_rows = rows;
3811 }
3812
3813 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
3814 self.highlighted_rows.clone()
3815 }
3816
3817 pub fn highlight_ranges<T: 'static>(
3818 &mut self,
3819 ranges: Vec<Range<Anchor>>,
3820 color: Color,
3821 cx: &mut ViewContext<Self>,
3822 ) {
3823 self.highlighted_ranges
3824 .insert(TypeId::of::<T>(), (color, ranges));
3825 cx.notify();
3826 }
3827
3828 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
3829 self.highlighted_ranges.remove(&TypeId::of::<T>());
3830 cx.notify();
3831 }
3832
3833 #[cfg(feature = "test-support")]
3834 pub fn all_highlighted_ranges(
3835 &mut self,
3836 cx: &mut ViewContext<Self>,
3837 ) -> Vec<(Range<DisplayPoint>, Color)> {
3838 let snapshot = self.snapshot(cx);
3839 let buffer = &snapshot.buffer_snapshot;
3840 let start = buffer.anchor_before(0);
3841 let end = buffer.anchor_after(buffer.len());
3842 self.highlighted_ranges_in_range(start..end, &snapshot)
3843 }
3844
3845 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
3846 self.highlighted_ranges
3847 .get(&TypeId::of::<T>())
3848 .map(|(color, ranges)| (*color, ranges.as_slice()))
3849 }
3850
3851 pub fn highlighted_ranges_in_range(
3852 &self,
3853 search_range: Range<Anchor>,
3854 display_snapshot: &DisplaySnapshot,
3855 ) -> Vec<(Range<DisplayPoint>, Color)> {
3856 let mut results = Vec::new();
3857 let buffer = &display_snapshot.buffer_snapshot;
3858 for (color, ranges) in self.highlighted_ranges.values() {
3859 let start_ix = match ranges.binary_search_by(|probe| {
3860 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
3861 if cmp.is_gt() {
3862 Ordering::Greater
3863 } else {
3864 Ordering::Less
3865 }
3866 }) {
3867 Ok(i) | Err(i) => i,
3868 };
3869 for range in &ranges[start_ix..] {
3870 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
3871 break;
3872 }
3873 let start = range
3874 .start
3875 .to_point(buffer)
3876 .to_display_point(display_snapshot);
3877 let end = range
3878 .end
3879 .to_point(buffer)
3880 .to_display_point(display_snapshot);
3881 results.push((start..end, *color))
3882 }
3883 }
3884 results
3885 }
3886
3887 fn next_blink_epoch(&mut self) -> usize {
3888 self.blink_epoch += 1;
3889 self.blink_epoch
3890 }
3891
3892 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3893 if !self.focused {
3894 return;
3895 }
3896
3897 self.show_local_cursors = true;
3898 cx.notify();
3899
3900 let epoch = self.next_blink_epoch();
3901 cx.spawn(|this, mut cx| {
3902 let this = this.downgrade();
3903 async move {
3904 Timer::after(CURSOR_BLINK_INTERVAL).await;
3905 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3906 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3907 }
3908 }
3909 })
3910 .detach();
3911 }
3912
3913 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3914 if epoch == self.blink_epoch {
3915 self.blinking_paused = false;
3916 self.blink_cursors(epoch, cx);
3917 }
3918 }
3919
3920 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3921 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3922 self.show_local_cursors = !self.show_local_cursors;
3923 cx.notify();
3924
3925 let epoch = self.next_blink_epoch();
3926 cx.spawn(|this, mut cx| {
3927 let this = this.downgrade();
3928 async move {
3929 Timer::after(CURSOR_BLINK_INTERVAL).await;
3930 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3931 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3932 }
3933 }
3934 })
3935 .detach();
3936 }
3937 }
3938
3939 pub fn show_local_cursors(&self) -> bool {
3940 self.show_local_cursors
3941 }
3942
3943 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3944 self.refresh_active_diagnostics(cx);
3945 cx.notify();
3946 }
3947
3948 fn on_buffer_event(
3949 &mut self,
3950 _: ModelHandle<MultiBuffer>,
3951 event: &language::Event,
3952 cx: &mut ViewContext<Self>,
3953 ) {
3954 match event {
3955 language::Event::Edited => cx.emit(Event::Edited),
3956 language::Event::Dirtied => cx.emit(Event::Dirtied),
3957 language::Event::Saved => cx.emit(Event::Saved),
3958 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
3959 language::Event::Reloaded => cx.emit(Event::TitleChanged),
3960 language::Event::Closed => cx.emit(Event::Closed),
3961 _ => {}
3962 }
3963 }
3964
3965 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3966 cx.notify();
3967 }
3968}
3969
3970impl EditorSnapshot {
3971 pub fn is_focused(&self) -> bool {
3972 self.is_focused
3973 }
3974
3975 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3976 self.placeholder_text.as_ref()
3977 }
3978
3979 pub fn scroll_position(&self) -> Vector2F {
3980 compute_scroll_position(
3981 &self.display_snapshot,
3982 self.scroll_position,
3983 &self.scroll_top_anchor,
3984 )
3985 }
3986}
3987
3988impl Deref for EditorSnapshot {
3989 type Target = DisplaySnapshot;
3990
3991 fn deref(&self) -> &Self::Target {
3992 &self.display_snapshot
3993 }
3994}
3995
3996impl EditorSettings {
3997 #[cfg(any(test, feature = "test-support"))]
3998 pub fn test(cx: &AppContext) -> Self {
3999 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4000
4001 Self {
4002 tab_size: 4,
4003 soft_wrap: SoftWrap::None,
4004 style: {
4005 let font_cache: &gpui::FontCache = cx.font_cache();
4006 let font_family_name = Arc::from("Monaco");
4007 let font_properties = Default::default();
4008 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4009 let font_id = font_cache
4010 .select_font(font_family_id, &font_properties)
4011 .unwrap();
4012 let text = gpui::fonts::TextStyle {
4013 font_family_name,
4014 font_family_id,
4015 font_id,
4016 font_size: 14.,
4017 color: gpui::color::Color::from_u32(0xff0000ff),
4018 font_properties,
4019 underline: None,
4020 };
4021 let default_diagnostic_style = DiagnosticStyle {
4022 message: text.clone().into(),
4023 header: Default::default(),
4024 text_scale_factor: 1.,
4025 };
4026 EditorStyle {
4027 text: text.clone(),
4028 placeholder_text: None,
4029 background: Default::default(),
4030 gutter_background: Default::default(),
4031 gutter_padding_factor: 2.,
4032 active_line_background: Default::default(),
4033 highlighted_line_background: Default::default(),
4034 line_number: Default::default(),
4035 line_number_active: Default::default(),
4036 selection: Default::default(),
4037 guest_selections: Default::default(),
4038 syntax: Default::default(),
4039 diagnostic_path_header: DiagnosticPathHeader {
4040 container: Default::default(),
4041 filename: ContainedText {
4042 container: Default::default(),
4043 text: text.clone(),
4044 },
4045 path: ContainedText {
4046 container: Default::default(),
4047 text: text.clone(),
4048 },
4049 text_scale_factor: 1.,
4050 },
4051 diagnostic_header: DiagnosticHeader {
4052 container: Default::default(),
4053 message: ContainedLabel {
4054 container: Default::default(),
4055 label: text.clone().into(),
4056 },
4057 code: ContainedText {
4058 container: Default::default(),
4059 text: text.clone(),
4060 },
4061 icon_width_factor: 1.,
4062 text_scale_factor: 1.,
4063 },
4064 error_diagnostic: default_diagnostic_style.clone(),
4065 invalid_error_diagnostic: default_diagnostic_style.clone(),
4066 warning_diagnostic: default_diagnostic_style.clone(),
4067 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4068 information_diagnostic: default_diagnostic_style.clone(),
4069 invalid_information_diagnostic: default_diagnostic_style.clone(),
4070 hint_diagnostic: default_diagnostic_style.clone(),
4071 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4072 autocomplete: Default::default(),
4073 }
4074 },
4075 }
4076 }
4077}
4078
4079fn compute_scroll_position(
4080 snapshot: &DisplaySnapshot,
4081 mut scroll_position: Vector2F,
4082 scroll_top_anchor: &Option<Anchor>,
4083) -> Vector2F {
4084 if let Some(anchor) = scroll_top_anchor {
4085 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4086 scroll_position.set_y(scroll_top + scroll_position.y());
4087 } else {
4088 scroll_position.set_y(0.);
4089 }
4090 scroll_position
4091}
4092
4093#[derive(Copy, Clone)]
4094pub enum Event {
4095 Activate,
4096 Edited,
4097 Blurred,
4098 Dirtied,
4099 Saved,
4100 TitleChanged,
4101 SelectionsChanged,
4102 Closed,
4103}
4104
4105impl Entity for Editor {
4106 type Event = Event;
4107}
4108
4109impl View for Editor {
4110 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4111 let settings = (self.build_settings)(cx);
4112 self.display_map.update(cx, |map, cx| {
4113 map.set_font(
4114 settings.style.text.font_id,
4115 settings.style.text.font_size,
4116 cx,
4117 )
4118 });
4119 EditorElement::new(self.handle.clone(), settings).boxed()
4120 }
4121
4122 fn ui_name() -> &'static str {
4123 "Editor"
4124 }
4125
4126 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4127 self.focused = true;
4128 self.blink_cursors(self.blink_epoch, cx);
4129 self.buffer.update(cx, |buffer, cx| {
4130 buffer.avoid_grouping_next_transaction(cx);
4131 buffer.set_active_selections(&self.selections, cx)
4132 });
4133 }
4134
4135 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4136 self.focused = false;
4137 self.show_local_cursors = false;
4138 self.buffer
4139 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4140 cx.emit(Event::Blurred);
4141 cx.notify();
4142 }
4143
4144 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4145 let mut cx = Self::default_keymap_context();
4146 let mode = match self.mode {
4147 EditorMode::SingleLine => "single_line",
4148 EditorMode::AutoHeight { .. } => "auto_height",
4149 EditorMode::Full => "full",
4150 };
4151 cx.map.insert("mode".into(), mode.into());
4152 cx
4153 }
4154}
4155
4156impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4157 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4158 let start = self.start.to_point(buffer);
4159 let end = self.end.to_point(buffer);
4160 if self.reversed {
4161 end..start
4162 } else {
4163 start..end
4164 }
4165 }
4166
4167 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4168 let start = self.start.to_offset(buffer);
4169 let end = self.end.to_offset(buffer);
4170 if self.reversed {
4171 end..start
4172 } else {
4173 start..end
4174 }
4175 }
4176
4177 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4178 let start = self
4179 .start
4180 .to_point(&map.buffer_snapshot)
4181 .to_display_point(map);
4182 let end = self
4183 .end
4184 .to_point(&map.buffer_snapshot)
4185 .to_display_point(map);
4186 if self.reversed {
4187 end..start
4188 } else {
4189 start..end
4190 }
4191 }
4192
4193 fn spanned_rows(
4194 &self,
4195 include_end_if_at_line_start: bool,
4196 map: &DisplaySnapshot,
4197 ) -> Range<u32> {
4198 let start = self.start.to_point(&map.buffer_snapshot);
4199 let mut end = self.end.to_point(&map.buffer_snapshot);
4200 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4201 end.row -= 1;
4202 }
4203
4204 let buffer_start = map.prev_line_boundary(start).0;
4205 let buffer_end = map.next_line_boundary(end).0;
4206 buffer_start.row..buffer_end.row + 1
4207 }
4208}
4209
4210pub fn diagnostic_block_renderer(
4211 diagnostic: Diagnostic,
4212 is_valid: bool,
4213 build_settings: BuildSettings,
4214) -> RenderBlock {
4215 let mut highlighted_lines = Vec::new();
4216 for line in diagnostic.message.lines() {
4217 highlighted_lines.push(highlight_diagnostic_message(line));
4218 }
4219
4220 Arc::new(move |cx: &BlockContext| {
4221 let settings = build_settings(cx);
4222 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4223 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4224 Flex::column()
4225 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4226 Label::new(
4227 line.clone(),
4228 style.message.clone().with_font_size(font_size),
4229 )
4230 .with_highlights(highlights.clone())
4231 .contained()
4232 .with_margin_left(cx.anchor_x)
4233 .boxed()
4234 }))
4235 .aligned()
4236 .left()
4237 .boxed()
4238 })
4239}
4240
4241pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4242 let mut message_without_backticks = String::new();
4243 let mut prev_offset = 0;
4244 let mut inside_block = false;
4245 let mut highlights = Vec::new();
4246 for (match_ix, (offset, _)) in message
4247 .match_indices('`')
4248 .chain([(message.len(), "")])
4249 .enumerate()
4250 {
4251 message_without_backticks.push_str(&message[prev_offset..offset]);
4252 if inside_block {
4253 highlights.extend(prev_offset - match_ix..offset - match_ix);
4254 }
4255
4256 inside_block = !inside_block;
4257 prev_offset = offset + 1;
4258 }
4259
4260 (message_without_backticks, highlights)
4261}
4262
4263pub fn diagnostic_style(
4264 severity: DiagnosticSeverity,
4265 valid: bool,
4266 style: &EditorStyle,
4267) -> DiagnosticStyle {
4268 match (severity, valid) {
4269 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4270 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4271 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4272 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4273 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4274 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4275 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4276 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4277 _ => DiagnosticStyle {
4278 message: style.text.clone().into(),
4279 header: Default::default(),
4280 text_scale_factor: 1.,
4281 },
4282 }
4283}
4284
4285pub fn settings_builder(
4286 buffer: WeakModelHandle<MultiBuffer>,
4287 settings: watch::Receiver<workspace::Settings>,
4288) -> BuildSettings {
4289 Arc::new(move |cx| {
4290 let settings = settings.borrow();
4291 let font_cache = cx.font_cache();
4292 let font_family_id = settings.buffer_font_family;
4293 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4294 let font_properties = Default::default();
4295 let font_id = font_cache
4296 .select_font(font_family_id, &font_properties)
4297 .unwrap();
4298 let font_size = settings.buffer_font_size;
4299
4300 let mut theme = settings.theme.editor.clone();
4301 theme.text = TextStyle {
4302 color: theme.text.color,
4303 font_family_name,
4304 font_family_id,
4305 font_id,
4306 font_size,
4307 font_properties,
4308 underline: None,
4309 };
4310 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4311 let soft_wrap = match settings.soft_wrap(language) {
4312 workspace::settings::SoftWrap::None => SoftWrap::None,
4313 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4314 workspace::settings::SoftWrap::PreferredLineLength => {
4315 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4316 }
4317 };
4318
4319 EditorSettings {
4320 tab_size: settings.tab_size,
4321 soft_wrap,
4322 style: theme,
4323 }
4324 })
4325}
4326
4327pub fn char_kind(c: char) -> CharKind {
4328 if c == '\n' {
4329 CharKind::Newline
4330 } else if c.is_whitespace() {
4331 CharKind::Whitespace
4332 } else if c.is_alphanumeric() || c == '_' {
4333 CharKind::Word
4334 } else {
4335 CharKind::Punctuation
4336 }
4337}
4338
4339#[cfg(test)]
4340mod tests {
4341 use super::*;
4342 use language::LanguageConfig;
4343 use std::{cell::RefCell, rc::Rc, time::Instant};
4344 use text::Point;
4345 use unindent::Unindent;
4346 use util::test::sample_text;
4347
4348 #[gpui::test]
4349 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4350 let mut now = Instant::now();
4351 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4352 let group_interval = buffer.read(cx).transaction_group_interval();
4353 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4354 let settings = EditorSettings::test(cx);
4355 let (_, editor) = cx.add_window(Default::default(), |cx| {
4356 build_editor(buffer.clone(), settings, cx)
4357 });
4358
4359 editor.update(cx, |editor, cx| {
4360 editor.start_transaction_at(now, cx);
4361 editor.select_ranges([2..4], None, cx);
4362 editor.insert("cd", cx);
4363 editor.end_transaction_at(now, cx);
4364 assert_eq!(editor.text(cx), "12cd56");
4365 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4366
4367 editor.start_transaction_at(now, cx);
4368 editor.select_ranges([4..5], None, cx);
4369 editor.insert("e", cx);
4370 editor.end_transaction_at(now, cx);
4371 assert_eq!(editor.text(cx), "12cde6");
4372 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4373
4374 now += group_interval + Duration::from_millis(1);
4375 editor.select_ranges([2..2], None, cx);
4376
4377 // Simulate an edit in another editor
4378 buffer.update(cx, |buffer, cx| {
4379 buffer.start_transaction_at(now, cx);
4380 buffer.edit([0..1], "a", cx);
4381 buffer.edit([1..1], "b", cx);
4382 buffer.end_transaction_at(now, cx);
4383 });
4384
4385 assert_eq!(editor.text(cx), "ab2cde6");
4386 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4387
4388 // Last transaction happened past the group interval in a different editor.
4389 // Undo it individually and don't restore selections.
4390 editor.undo(&Undo, cx);
4391 assert_eq!(editor.text(cx), "12cde6");
4392 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4393
4394 // First two transactions happened within the group interval in this editor.
4395 // Undo them together and restore selections.
4396 editor.undo(&Undo, cx);
4397 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4398 assert_eq!(editor.text(cx), "123456");
4399 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4400
4401 // Redo the first two transactions together.
4402 editor.redo(&Redo, cx);
4403 assert_eq!(editor.text(cx), "12cde6");
4404 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4405
4406 // Redo the last transaction on its own.
4407 editor.redo(&Redo, cx);
4408 assert_eq!(editor.text(cx), "ab2cde6");
4409 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4410
4411 // Test empty transactions.
4412 editor.start_transaction_at(now, cx);
4413 editor.end_transaction_at(now, cx);
4414 editor.undo(&Undo, cx);
4415 assert_eq!(editor.text(cx), "12cde6");
4416 });
4417 }
4418
4419 #[gpui::test]
4420 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4421 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4422 let settings = EditorSettings::test(cx);
4423 let (_, editor) =
4424 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4425
4426 editor.update(cx, |view, cx| {
4427 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4428 });
4429
4430 assert_eq!(
4431 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4432 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4433 );
4434
4435 editor.update(cx, |view, cx| {
4436 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4437 });
4438
4439 assert_eq!(
4440 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4441 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4442 );
4443
4444 editor.update(cx, |view, cx| {
4445 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4446 });
4447
4448 assert_eq!(
4449 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4450 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4451 );
4452
4453 editor.update(cx, |view, cx| {
4454 view.end_selection(cx);
4455 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4456 });
4457
4458 assert_eq!(
4459 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4460 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4461 );
4462
4463 editor.update(cx, |view, cx| {
4464 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4465 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4466 });
4467
4468 assert_eq!(
4469 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4470 [
4471 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4472 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4473 ]
4474 );
4475
4476 editor.update(cx, |view, cx| {
4477 view.end_selection(cx);
4478 });
4479
4480 assert_eq!(
4481 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4482 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4483 );
4484 }
4485
4486 #[gpui::test]
4487 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4488 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4489 let settings = EditorSettings::test(cx);
4490 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4491
4492 view.update(cx, |view, cx| {
4493 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4494 assert_eq!(
4495 view.selected_display_ranges(cx),
4496 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4497 );
4498 });
4499
4500 view.update(cx, |view, cx| {
4501 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4502 assert_eq!(
4503 view.selected_display_ranges(cx),
4504 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4505 );
4506 });
4507
4508 view.update(cx, |view, cx| {
4509 view.cancel(&Cancel, cx);
4510 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4511 assert_eq!(
4512 view.selected_display_ranges(cx),
4513 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4514 );
4515 });
4516 }
4517
4518 #[gpui::test]
4519 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4520 cx.add_window(Default::default(), |cx| {
4521 use workspace::ItemView;
4522 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4523 let settings = EditorSettings::test(&cx);
4524 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4525 let mut editor = build_editor(buffer.clone(), settings, cx);
4526 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4527
4528 // Move the cursor a small distance.
4529 // Nothing is added to the navigation history.
4530 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4531 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4532 assert!(nav_history.borrow_mut().pop_backward().is_none());
4533
4534 // Move the cursor a large distance.
4535 // The history can jump back to the previous position.
4536 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4537 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4538 editor.navigate(nav_entry.data.unwrap(), cx);
4539 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4540 assert_eq!(
4541 editor.selected_display_ranges(cx),
4542 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4543 );
4544
4545 // Move the cursor a small distance via the mouse.
4546 // Nothing is added to the navigation history.
4547 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4548 editor.end_selection(cx);
4549 assert_eq!(
4550 editor.selected_display_ranges(cx),
4551 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4552 );
4553 assert!(nav_history.borrow_mut().pop_backward().is_none());
4554
4555 // Move the cursor a large distance via the mouse.
4556 // The history can jump back to the previous position.
4557 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
4558 editor.end_selection(cx);
4559 assert_eq!(
4560 editor.selected_display_ranges(cx),
4561 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
4562 );
4563 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4564 editor.navigate(nav_entry.data.unwrap(), cx);
4565 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4566 assert_eq!(
4567 editor.selected_display_ranges(cx),
4568 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4569 );
4570
4571 editor
4572 });
4573 }
4574
4575 #[gpui::test]
4576 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4577 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4578 let settings = EditorSettings::test(cx);
4579 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4580
4581 view.update(cx, |view, cx| {
4582 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4583 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4584 view.end_selection(cx);
4585
4586 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4587 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4588 view.end_selection(cx);
4589 assert_eq!(
4590 view.selected_display_ranges(cx),
4591 [
4592 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4593 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4594 ]
4595 );
4596 });
4597
4598 view.update(cx, |view, cx| {
4599 view.cancel(&Cancel, cx);
4600 assert_eq!(
4601 view.selected_display_ranges(cx),
4602 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4603 );
4604 });
4605
4606 view.update(cx, |view, cx| {
4607 view.cancel(&Cancel, cx);
4608 assert_eq!(
4609 view.selected_display_ranges(cx),
4610 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4611 );
4612 });
4613 }
4614
4615 #[gpui::test]
4616 fn test_fold(cx: &mut gpui::MutableAppContext) {
4617 let buffer = MultiBuffer::build_simple(
4618 &"
4619 impl Foo {
4620 // Hello!
4621
4622 fn a() {
4623 1
4624 }
4625
4626 fn b() {
4627 2
4628 }
4629
4630 fn c() {
4631 3
4632 }
4633 }
4634 "
4635 .unindent(),
4636 cx,
4637 );
4638 let settings = EditorSettings::test(&cx);
4639 let (_, view) = cx.add_window(Default::default(), |cx| {
4640 build_editor(buffer.clone(), settings, cx)
4641 });
4642
4643 view.update(cx, |view, cx| {
4644 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
4645 view.fold(&Fold, cx);
4646 assert_eq!(
4647 view.display_text(cx),
4648 "
4649 impl Foo {
4650 // Hello!
4651
4652 fn a() {
4653 1
4654 }
4655
4656 fn b() {…
4657 }
4658
4659 fn c() {…
4660 }
4661 }
4662 "
4663 .unindent(),
4664 );
4665
4666 view.fold(&Fold, cx);
4667 assert_eq!(
4668 view.display_text(cx),
4669 "
4670 impl Foo {…
4671 }
4672 "
4673 .unindent(),
4674 );
4675
4676 view.unfold(&Unfold, cx);
4677 assert_eq!(
4678 view.display_text(cx),
4679 "
4680 impl Foo {
4681 // Hello!
4682
4683 fn a() {
4684 1
4685 }
4686
4687 fn b() {…
4688 }
4689
4690 fn c() {…
4691 }
4692 }
4693 "
4694 .unindent(),
4695 );
4696
4697 view.unfold(&Unfold, cx);
4698 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4699 });
4700 }
4701
4702 #[gpui::test]
4703 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4704 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4705 let settings = EditorSettings::test(&cx);
4706 let (_, view) = cx.add_window(Default::default(), |cx| {
4707 build_editor(buffer.clone(), settings, cx)
4708 });
4709
4710 buffer.update(cx, |buffer, cx| {
4711 buffer.edit(
4712 vec![
4713 Point::new(1, 0)..Point::new(1, 0),
4714 Point::new(1, 1)..Point::new(1, 1),
4715 ],
4716 "\t",
4717 cx,
4718 );
4719 });
4720
4721 view.update(cx, |view, cx| {
4722 assert_eq!(
4723 view.selected_display_ranges(cx),
4724 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4725 );
4726
4727 view.move_down(&MoveDown, cx);
4728 assert_eq!(
4729 view.selected_display_ranges(cx),
4730 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4731 );
4732
4733 view.move_right(&MoveRight, cx);
4734 assert_eq!(
4735 view.selected_display_ranges(cx),
4736 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4737 );
4738
4739 view.move_left(&MoveLeft, cx);
4740 assert_eq!(
4741 view.selected_display_ranges(cx),
4742 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4743 );
4744
4745 view.move_up(&MoveUp, cx);
4746 assert_eq!(
4747 view.selected_display_ranges(cx),
4748 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4749 );
4750
4751 view.move_to_end(&MoveToEnd, cx);
4752 assert_eq!(
4753 view.selected_display_ranges(cx),
4754 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4755 );
4756
4757 view.move_to_beginning(&MoveToBeginning, cx);
4758 assert_eq!(
4759 view.selected_display_ranges(cx),
4760 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4761 );
4762
4763 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
4764 view.select_to_beginning(&SelectToBeginning, cx);
4765 assert_eq!(
4766 view.selected_display_ranges(cx),
4767 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4768 );
4769
4770 view.select_to_end(&SelectToEnd, cx);
4771 assert_eq!(
4772 view.selected_display_ranges(cx),
4773 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4774 );
4775 });
4776 }
4777
4778 #[gpui::test]
4779 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4780 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4781 let settings = EditorSettings::test(&cx);
4782 let (_, view) = cx.add_window(Default::default(), |cx| {
4783 build_editor(buffer.clone(), settings, cx)
4784 });
4785
4786 assert_eq!('ⓐ'.len_utf8(), 3);
4787 assert_eq!('α'.len_utf8(), 2);
4788
4789 view.update(cx, |view, cx| {
4790 view.fold_ranges(
4791 vec![
4792 Point::new(0, 6)..Point::new(0, 12),
4793 Point::new(1, 2)..Point::new(1, 4),
4794 Point::new(2, 4)..Point::new(2, 8),
4795 ],
4796 cx,
4797 );
4798 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4799
4800 view.move_right(&MoveRight, cx);
4801 assert_eq!(
4802 view.selected_display_ranges(cx),
4803 &[empty_range(0, "ⓐ".len())]
4804 );
4805 view.move_right(&MoveRight, cx);
4806 assert_eq!(
4807 view.selected_display_ranges(cx),
4808 &[empty_range(0, "ⓐⓑ".len())]
4809 );
4810 view.move_right(&MoveRight, cx);
4811 assert_eq!(
4812 view.selected_display_ranges(cx),
4813 &[empty_range(0, "ⓐⓑ…".len())]
4814 );
4815
4816 view.move_down(&MoveDown, cx);
4817 assert_eq!(
4818 view.selected_display_ranges(cx),
4819 &[empty_range(1, "ab…".len())]
4820 );
4821 view.move_left(&MoveLeft, cx);
4822 assert_eq!(
4823 view.selected_display_ranges(cx),
4824 &[empty_range(1, "ab".len())]
4825 );
4826 view.move_left(&MoveLeft, cx);
4827 assert_eq!(
4828 view.selected_display_ranges(cx),
4829 &[empty_range(1, "a".len())]
4830 );
4831
4832 view.move_down(&MoveDown, cx);
4833 assert_eq!(
4834 view.selected_display_ranges(cx),
4835 &[empty_range(2, "α".len())]
4836 );
4837 view.move_right(&MoveRight, cx);
4838 assert_eq!(
4839 view.selected_display_ranges(cx),
4840 &[empty_range(2, "αβ".len())]
4841 );
4842 view.move_right(&MoveRight, cx);
4843 assert_eq!(
4844 view.selected_display_ranges(cx),
4845 &[empty_range(2, "αβ…".len())]
4846 );
4847 view.move_right(&MoveRight, cx);
4848 assert_eq!(
4849 view.selected_display_ranges(cx),
4850 &[empty_range(2, "αβ…ε".len())]
4851 );
4852
4853 view.move_up(&MoveUp, cx);
4854 assert_eq!(
4855 view.selected_display_ranges(cx),
4856 &[empty_range(1, "ab…e".len())]
4857 );
4858 view.move_up(&MoveUp, cx);
4859 assert_eq!(
4860 view.selected_display_ranges(cx),
4861 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4862 );
4863 view.move_left(&MoveLeft, cx);
4864 assert_eq!(
4865 view.selected_display_ranges(cx),
4866 &[empty_range(0, "ⓐⓑ…".len())]
4867 );
4868 view.move_left(&MoveLeft, cx);
4869 assert_eq!(
4870 view.selected_display_ranges(cx),
4871 &[empty_range(0, "ⓐⓑ".len())]
4872 );
4873 view.move_left(&MoveLeft, cx);
4874 assert_eq!(
4875 view.selected_display_ranges(cx),
4876 &[empty_range(0, "ⓐ".len())]
4877 );
4878 });
4879 }
4880
4881 #[gpui::test]
4882 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4883 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4884 let settings = EditorSettings::test(&cx);
4885 let (_, view) = cx.add_window(Default::default(), |cx| {
4886 build_editor(buffer.clone(), settings, cx)
4887 });
4888 view.update(cx, |view, cx| {
4889 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
4890 view.move_down(&MoveDown, cx);
4891 assert_eq!(
4892 view.selected_display_ranges(cx),
4893 &[empty_range(1, "abcd".len())]
4894 );
4895
4896 view.move_down(&MoveDown, cx);
4897 assert_eq!(
4898 view.selected_display_ranges(cx),
4899 &[empty_range(2, "αβγ".len())]
4900 );
4901
4902 view.move_down(&MoveDown, cx);
4903 assert_eq!(
4904 view.selected_display_ranges(cx),
4905 &[empty_range(3, "abcd".len())]
4906 );
4907
4908 view.move_down(&MoveDown, cx);
4909 assert_eq!(
4910 view.selected_display_ranges(cx),
4911 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4912 );
4913
4914 view.move_up(&MoveUp, cx);
4915 assert_eq!(
4916 view.selected_display_ranges(cx),
4917 &[empty_range(3, "abcd".len())]
4918 );
4919
4920 view.move_up(&MoveUp, cx);
4921 assert_eq!(
4922 view.selected_display_ranges(cx),
4923 &[empty_range(2, "αβγ".len())]
4924 );
4925 });
4926 }
4927
4928 #[gpui::test]
4929 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4930 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4931 let settings = EditorSettings::test(&cx);
4932 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4933 view.update(cx, |view, cx| {
4934 view.select_display_ranges(
4935 &[
4936 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4937 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4938 ],
4939 cx,
4940 );
4941 });
4942
4943 view.update(cx, |view, cx| {
4944 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4945 assert_eq!(
4946 view.selected_display_ranges(cx),
4947 &[
4948 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4949 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4950 ]
4951 );
4952 });
4953
4954 view.update(cx, |view, cx| {
4955 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4956 assert_eq!(
4957 view.selected_display_ranges(cx),
4958 &[
4959 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4960 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4961 ]
4962 );
4963 });
4964
4965 view.update(cx, |view, cx| {
4966 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4967 assert_eq!(
4968 view.selected_display_ranges(cx),
4969 &[
4970 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4971 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4972 ]
4973 );
4974 });
4975
4976 view.update(cx, |view, cx| {
4977 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4978 assert_eq!(
4979 view.selected_display_ranges(cx),
4980 &[
4981 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4982 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4983 ]
4984 );
4985 });
4986
4987 // Moving to the end of line again is a no-op.
4988 view.update(cx, |view, cx| {
4989 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4990 assert_eq!(
4991 view.selected_display_ranges(cx),
4992 &[
4993 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4994 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4995 ]
4996 );
4997 });
4998
4999 view.update(cx, |view, cx| {
5000 view.move_left(&MoveLeft, cx);
5001 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5002 assert_eq!(
5003 view.selected_display_ranges(cx),
5004 &[
5005 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5006 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5007 ]
5008 );
5009 });
5010
5011 view.update(cx, |view, cx| {
5012 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5013 assert_eq!(
5014 view.selected_display_ranges(cx),
5015 &[
5016 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5017 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5018 ]
5019 );
5020 });
5021
5022 view.update(cx, |view, cx| {
5023 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5024 assert_eq!(
5025 view.selected_display_ranges(cx),
5026 &[
5027 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5028 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5029 ]
5030 );
5031 });
5032
5033 view.update(cx, |view, cx| {
5034 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5035 assert_eq!(
5036 view.selected_display_ranges(cx),
5037 &[
5038 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5039 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5040 ]
5041 );
5042 });
5043
5044 view.update(cx, |view, cx| {
5045 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5046 assert_eq!(view.display_text(cx), "ab\n de");
5047 assert_eq!(
5048 view.selected_display_ranges(cx),
5049 &[
5050 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5051 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5052 ]
5053 );
5054 });
5055
5056 view.update(cx, |view, cx| {
5057 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5058 assert_eq!(view.display_text(cx), "\n");
5059 assert_eq!(
5060 view.selected_display_ranges(cx),
5061 &[
5062 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5063 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5064 ]
5065 );
5066 });
5067 }
5068
5069 #[gpui::test]
5070 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5071 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5072 let settings = EditorSettings::test(&cx);
5073 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5074 view.update(cx, |view, cx| {
5075 view.select_display_ranges(
5076 &[
5077 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5078 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5079 ],
5080 cx,
5081 );
5082 });
5083
5084 view.update(cx, |view, cx| {
5085 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5086 assert_eq!(
5087 view.selected_display_ranges(cx),
5088 &[
5089 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5090 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5091 ]
5092 );
5093 });
5094
5095 view.update(cx, |view, cx| {
5096 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5097 assert_eq!(
5098 view.selected_display_ranges(cx),
5099 &[
5100 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5101 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5102 ]
5103 );
5104 });
5105
5106 view.update(cx, |view, cx| {
5107 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5108 assert_eq!(
5109 view.selected_display_ranges(cx),
5110 &[
5111 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5112 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5113 ]
5114 );
5115 });
5116
5117 view.update(cx, |view, cx| {
5118 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5119 assert_eq!(
5120 view.selected_display_ranges(cx),
5121 &[
5122 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5123 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5124 ]
5125 );
5126 });
5127
5128 view.update(cx, |view, cx| {
5129 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5130 assert_eq!(
5131 view.selected_display_ranges(cx),
5132 &[
5133 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5134 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5135 ]
5136 );
5137 });
5138
5139 view.update(cx, |view, cx| {
5140 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5141 assert_eq!(
5142 view.selected_display_ranges(cx),
5143 &[
5144 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5145 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5146 ]
5147 );
5148 });
5149
5150 view.update(cx, |view, cx| {
5151 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5152 assert_eq!(
5153 view.selected_display_ranges(cx),
5154 &[
5155 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5156 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5157 ]
5158 );
5159 });
5160
5161 view.update(cx, |view, cx| {
5162 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5163 assert_eq!(
5164 view.selected_display_ranges(cx),
5165 &[
5166 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5167 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5168 ]
5169 );
5170 });
5171
5172 view.update(cx, |view, cx| {
5173 view.move_right(&MoveRight, cx);
5174 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5175 assert_eq!(
5176 view.selected_display_ranges(cx),
5177 &[
5178 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5179 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5180 ]
5181 );
5182 });
5183
5184 view.update(cx, |view, cx| {
5185 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5186 assert_eq!(
5187 view.selected_display_ranges(cx),
5188 &[
5189 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5190 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5191 ]
5192 );
5193 });
5194
5195 view.update(cx, |view, cx| {
5196 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5197 assert_eq!(
5198 view.selected_display_ranges(cx),
5199 &[
5200 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5201 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5202 ]
5203 );
5204 });
5205 }
5206
5207 #[gpui::test]
5208 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5209 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5210 let settings = EditorSettings::test(&cx);
5211 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5212
5213 view.update(cx, |view, cx| {
5214 view.set_wrap_width(Some(140.), cx);
5215 assert_eq!(
5216 view.display_text(cx),
5217 "use one::{\n two::three::\n four::five\n};"
5218 );
5219
5220 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5221
5222 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5223 assert_eq!(
5224 view.selected_display_ranges(cx),
5225 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5226 );
5227
5228 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5229 assert_eq!(
5230 view.selected_display_ranges(cx),
5231 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5232 );
5233
5234 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5235 assert_eq!(
5236 view.selected_display_ranges(cx),
5237 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5238 );
5239
5240 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5241 assert_eq!(
5242 view.selected_display_ranges(cx),
5243 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5244 );
5245
5246 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5247 assert_eq!(
5248 view.selected_display_ranges(cx),
5249 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5250 );
5251
5252 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5253 assert_eq!(
5254 view.selected_display_ranges(cx),
5255 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5256 );
5257 });
5258 }
5259
5260 #[gpui::test]
5261 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5262 let buffer = MultiBuffer::build_simple("one two three four", cx);
5263 let settings = EditorSettings::test(&cx);
5264 let (_, view) = cx.add_window(Default::default(), |cx| {
5265 build_editor(buffer.clone(), settings, cx)
5266 });
5267
5268 view.update(cx, |view, cx| {
5269 view.select_display_ranges(
5270 &[
5271 // an empty selection - the preceding word fragment is deleted
5272 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5273 // characters selected - they are deleted
5274 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5275 ],
5276 cx,
5277 );
5278 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5279 });
5280
5281 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5282
5283 view.update(cx, |view, cx| {
5284 view.select_display_ranges(
5285 &[
5286 // an empty selection - the following word fragment is deleted
5287 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5288 // characters selected - they are deleted
5289 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5290 ],
5291 cx,
5292 );
5293 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5294 });
5295
5296 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5297 }
5298
5299 #[gpui::test]
5300 fn test_newline(cx: &mut gpui::MutableAppContext) {
5301 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5302 let settings = EditorSettings::test(&cx);
5303 let (_, view) = cx.add_window(Default::default(), |cx| {
5304 build_editor(buffer.clone(), settings, cx)
5305 });
5306
5307 view.update(cx, |view, cx| {
5308 view.select_display_ranges(
5309 &[
5310 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5311 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5312 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5313 ],
5314 cx,
5315 );
5316
5317 view.newline(&Newline, cx);
5318 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5319 });
5320 }
5321
5322 #[gpui::test]
5323 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5324 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5325 let settings = EditorSettings::test(&cx);
5326 let (_, view) = cx.add_window(Default::default(), |cx| {
5327 build_editor(buffer.clone(), settings, cx)
5328 });
5329
5330 view.update(cx, |view, cx| {
5331 // two selections on the same line
5332 view.select_display_ranges(
5333 &[
5334 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5335 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5336 ],
5337 cx,
5338 );
5339
5340 // indent from mid-tabstop to full tabstop
5341 view.tab(&Tab, cx);
5342 assert_eq!(view.text(cx), " one two\nthree\n four");
5343 assert_eq!(
5344 view.selected_display_ranges(cx),
5345 &[
5346 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5347 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5348 ]
5349 );
5350
5351 // outdent from 1 tabstop to 0 tabstops
5352 view.outdent(&Outdent, cx);
5353 assert_eq!(view.text(cx), "one two\nthree\n four");
5354 assert_eq!(
5355 view.selected_display_ranges(cx),
5356 &[
5357 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5358 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5359 ]
5360 );
5361
5362 // select across line ending
5363 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5364
5365 // indent and outdent affect only the preceding line
5366 view.tab(&Tab, cx);
5367 assert_eq!(view.text(cx), "one two\n three\n four");
5368 assert_eq!(
5369 view.selected_display_ranges(cx),
5370 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5371 );
5372 view.outdent(&Outdent, cx);
5373 assert_eq!(view.text(cx), "one two\nthree\n four");
5374 assert_eq!(
5375 view.selected_display_ranges(cx),
5376 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5377 );
5378
5379 // Ensure that indenting/outdenting works when the cursor is at column 0.
5380 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5381 view.tab(&Tab, cx);
5382 assert_eq!(view.text(cx), "one two\n three\n four");
5383 assert_eq!(
5384 view.selected_display_ranges(cx),
5385 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5386 );
5387
5388 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5389 view.outdent(&Outdent, cx);
5390 assert_eq!(view.text(cx), "one two\nthree\n four");
5391 assert_eq!(
5392 view.selected_display_ranges(cx),
5393 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5394 );
5395 });
5396 }
5397
5398 #[gpui::test]
5399 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5400 let buffer =
5401 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5402 let settings = EditorSettings::test(&cx);
5403 let (_, view) = cx.add_window(Default::default(), |cx| {
5404 build_editor(buffer.clone(), settings, cx)
5405 });
5406
5407 view.update(cx, |view, cx| {
5408 view.select_display_ranges(
5409 &[
5410 // an empty selection - the preceding character is deleted
5411 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5412 // one character selected - it is deleted
5413 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5414 // a line suffix selected - it is deleted
5415 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5416 ],
5417 cx,
5418 );
5419 view.backspace(&Backspace, cx);
5420 });
5421
5422 assert_eq!(
5423 buffer.read(cx).read(cx).text(),
5424 "oe two three\nfou five six\nseven ten\n"
5425 );
5426 }
5427
5428 #[gpui::test]
5429 fn test_delete(cx: &mut gpui::MutableAppContext) {
5430 let buffer =
5431 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5432 let settings = EditorSettings::test(&cx);
5433 let (_, view) = cx.add_window(Default::default(), |cx| {
5434 build_editor(buffer.clone(), settings, cx)
5435 });
5436
5437 view.update(cx, |view, cx| {
5438 view.select_display_ranges(
5439 &[
5440 // an empty selection - the following character is deleted
5441 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5442 // one character selected - it is deleted
5443 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5444 // a line suffix selected - it is deleted
5445 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5446 ],
5447 cx,
5448 );
5449 view.delete(&Delete, cx);
5450 });
5451
5452 assert_eq!(
5453 buffer.read(cx).read(cx).text(),
5454 "on two three\nfou five six\nseven ten\n"
5455 );
5456 }
5457
5458 #[gpui::test]
5459 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5460 let settings = EditorSettings::test(&cx);
5461 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5462 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5463 view.update(cx, |view, cx| {
5464 view.select_display_ranges(
5465 &[
5466 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5467 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5468 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5469 ],
5470 cx,
5471 );
5472 view.delete_line(&DeleteLine, cx);
5473 assert_eq!(view.display_text(cx), "ghi");
5474 assert_eq!(
5475 view.selected_display_ranges(cx),
5476 vec![
5477 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5478 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5479 ]
5480 );
5481 });
5482
5483 let settings = EditorSettings::test(&cx);
5484 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5485 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5486 view.update(cx, |view, cx| {
5487 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5488 view.delete_line(&DeleteLine, cx);
5489 assert_eq!(view.display_text(cx), "ghi\n");
5490 assert_eq!(
5491 view.selected_display_ranges(cx),
5492 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5493 );
5494 });
5495 }
5496
5497 #[gpui::test]
5498 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5499 let settings = EditorSettings::test(&cx);
5500 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5501 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5502 view.update(cx, |view, cx| {
5503 view.select_display_ranges(
5504 &[
5505 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5506 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5507 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5508 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5509 ],
5510 cx,
5511 );
5512 view.duplicate_line(&DuplicateLine, cx);
5513 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5514 assert_eq!(
5515 view.selected_display_ranges(cx),
5516 vec![
5517 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5518 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5519 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5520 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5521 ]
5522 );
5523 });
5524
5525 let settings = EditorSettings::test(&cx);
5526 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5527 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5528 view.update(cx, |view, cx| {
5529 view.select_display_ranges(
5530 &[
5531 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5532 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5533 ],
5534 cx,
5535 );
5536 view.duplicate_line(&DuplicateLine, cx);
5537 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5538 assert_eq!(
5539 view.selected_display_ranges(cx),
5540 vec![
5541 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5542 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5543 ]
5544 );
5545 });
5546 }
5547
5548 #[gpui::test]
5549 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5550 let settings = EditorSettings::test(&cx);
5551 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5552 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5553 view.update(cx, |view, cx| {
5554 view.fold_ranges(
5555 vec![
5556 Point::new(0, 2)..Point::new(1, 2),
5557 Point::new(2, 3)..Point::new(4, 1),
5558 Point::new(7, 0)..Point::new(8, 4),
5559 ],
5560 cx,
5561 );
5562 view.select_display_ranges(
5563 &[
5564 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5565 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5566 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5567 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5568 ],
5569 cx,
5570 );
5571 assert_eq!(
5572 view.display_text(cx),
5573 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5574 );
5575
5576 view.move_line_up(&MoveLineUp, cx);
5577 assert_eq!(
5578 view.display_text(cx),
5579 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5580 );
5581 assert_eq!(
5582 view.selected_display_ranges(cx),
5583 vec![
5584 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5585 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5586 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5587 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5588 ]
5589 );
5590 });
5591
5592 view.update(cx, |view, cx| {
5593 view.move_line_down(&MoveLineDown, cx);
5594 assert_eq!(
5595 view.display_text(cx),
5596 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5597 );
5598 assert_eq!(
5599 view.selected_display_ranges(cx),
5600 vec![
5601 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5602 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5603 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5604 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5605 ]
5606 );
5607 });
5608
5609 view.update(cx, |view, cx| {
5610 view.move_line_down(&MoveLineDown, cx);
5611 assert_eq!(
5612 view.display_text(cx),
5613 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5614 );
5615 assert_eq!(
5616 view.selected_display_ranges(cx),
5617 vec![
5618 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5619 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5620 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5621 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5622 ]
5623 );
5624 });
5625
5626 view.update(cx, |view, cx| {
5627 view.move_line_up(&MoveLineUp, cx);
5628 assert_eq!(
5629 view.display_text(cx),
5630 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5631 );
5632 assert_eq!(
5633 view.selected_display_ranges(cx),
5634 vec![
5635 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5636 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5637 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5638 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5639 ]
5640 );
5641 });
5642 }
5643
5644 #[gpui::test]
5645 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5646 let settings = EditorSettings::test(&cx);
5647 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5648 let snapshot = buffer.read(cx).snapshot(cx);
5649 let (_, editor) =
5650 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5651 editor.update(cx, |editor, cx| {
5652 editor.insert_blocks(
5653 [BlockProperties {
5654 position: snapshot.anchor_after(Point::new(2, 0)),
5655 disposition: BlockDisposition::Below,
5656 height: 1,
5657 render: Arc::new(|_| Empty::new().boxed()),
5658 }],
5659 cx,
5660 );
5661 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5662 editor.move_line_down(&MoveLineDown, cx);
5663 });
5664 }
5665
5666 #[gpui::test]
5667 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5668 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5669 let settings = EditorSettings::test(&cx);
5670 let view = cx
5671 .add_window(Default::default(), |cx| {
5672 build_editor(buffer.clone(), settings, cx)
5673 })
5674 .1;
5675
5676 // Cut with three selections. Clipboard text is divided into three slices.
5677 view.update(cx, |view, cx| {
5678 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5679 view.cut(&Cut, cx);
5680 assert_eq!(view.display_text(cx), "two four six ");
5681 });
5682
5683 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5684 view.update(cx, |view, cx| {
5685 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5686 view.paste(&Paste, cx);
5687 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5688 assert_eq!(
5689 view.selected_display_ranges(cx),
5690 &[
5691 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5692 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5693 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5694 ]
5695 );
5696 });
5697
5698 // Paste again but with only two cursors. Since the number of cursors doesn't
5699 // match the number of slices in the clipboard, the entire clipboard text
5700 // is pasted at each cursor.
5701 view.update(cx, |view, cx| {
5702 view.select_ranges(vec![0..0, 31..31], None, cx);
5703 view.handle_input(&Input("( ".into()), cx);
5704 view.paste(&Paste, cx);
5705 view.handle_input(&Input(") ".into()), cx);
5706 assert_eq!(
5707 view.display_text(cx),
5708 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5709 );
5710 });
5711
5712 view.update(cx, |view, cx| {
5713 view.select_ranges(vec![0..0], None, cx);
5714 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5715 assert_eq!(
5716 view.display_text(cx),
5717 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5718 );
5719 });
5720
5721 // Cut with three selections, one of which is full-line.
5722 view.update(cx, |view, cx| {
5723 view.select_display_ranges(
5724 &[
5725 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5726 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5727 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5728 ],
5729 cx,
5730 );
5731 view.cut(&Cut, cx);
5732 assert_eq!(
5733 view.display_text(cx),
5734 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5735 );
5736 });
5737
5738 // Paste with three selections, noticing how the copied selection that was full-line
5739 // gets inserted before the second cursor.
5740 view.update(cx, |view, cx| {
5741 view.select_display_ranges(
5742 &[
5743 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5744 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5745 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5746 ],
5747 cx,
5748 );
5749 view.paste(&Paste, cx);
5750 assert_eq!(
5751 view.display_text(cx),
5752 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5753 );
5754 assert_eq!(
5755 view.selected_display_ranges(cx),
5756 &[
5757 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5758 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5759 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5760 ]
5761 );
5762 });
5763
5764 // Copy with a single cursor only, which writes the whole line into the clipboard.
5765 view.update(cx, |view, cx| {
5766 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
5767 view.copy(&Copy, cx);
5768 });
5769
5770 // Paste with three selections, noticing how the copied full-line selection is inserted
5771 // before the empty selections but replaces the selection that is non-empty.
5772 view.update(cx, |view, cx| {
5773 view.select_display_ranges(
5774 &[
5775 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5776 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5777 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5778 ],
5779 cx,
5780 );
5781 view.paste(&Paste, cx);
5782 assert_eq!(
5783 view.display_text(cx),
5784 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5785 );
5786 assert_eq!(
5787 view.selected_display_ranges(cx),
5788 &[
5789 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5790 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5791 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5792 ]
5793 );
5794 });
5795 }
5796
5797 #[gpui::test]
5798 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5799 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5800 let settings = EditorSettings::test(&cx);
5801 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5802 view.update(cx, |view, cx| {
5803 view.select_all(&SelectAll, cx);
5804 assert_eq!(
5805 view.selected_display_ranges(cx),
5806 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5807 );
5808 });
5809 }
5810
5811 #[gpui::test]
5812 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5813 let settings = EditorSettings::test(&cx);
5814 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5815 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5816 view.update(cx, |view, cx| {
5817 view.select_display_ranges(
5818 &[
5819 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5820 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5821 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5822 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5823 ],
5824 cx,
5825 );
5826 view.select_line(&SelectLine, cx);
5827 assert_eq!(
5828 view.selected_display_ranges(cx),
5829 vec![
5830 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5831 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5832 ]
5833 );
5834 });
5835
5836 view.update(cx, |view, cx| {
5837 view.select_line(&SelectLine, cx);
5838 assert_eq!(
5839 view.selected_display_ranges(cx),
5840 vec![
5841 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5842 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5843 ]
5844 );
5845 });
5846
5847 view.update(cx, |view, cx| {
5848 view.select_line(&SelectLine, cx);
5849 assert_eq!(
5850 view.selected_display_ranges(cx),
5851 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5852 );
5853 });
5854 }
5855
5856 #[gpui::test]
5857 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5858 let settings = EditorSettings::test(&cx);
5859 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5860 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5861 view.update(cx, |view, cx| {
5862 view.fold_ranges(
5863 vec![
5864 Point::new(0, 2)..Point::new(1, 2),
5865 Point::new(2, 3)..Point::new(4, 1),
5866 Point::new(7, 0)..Point::new(8, 4),
5867 ],
5868 cx,
5869 );
5870 view.select_display_ranges(
5871 &[
5872 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5873 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5874 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5875 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5876 ],
5877 cx,
5878 );
5879 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5880 });
5881
5882 view.update(cx, |view, cx| {
5883 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5884 assert_eq!(
5885 view.display_text(cx),
5886 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5887 );
5888 assert_eq!(
5889 view.selected_display_ranges(cx),
5890 [
5891 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5892 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5893 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5894 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5895 ]
5896 );
5897 });
5898
5899 view.update(cx, |view, cx| {
5900 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
5901 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5902 assert_eq!(
5903 view.display_text(cx),
5904 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5905 );
5906 assert_eq!(
5907 view.selected_display_ranges(cx),
5908 [
5909 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5910 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5911 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5912 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5913 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5914 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5915 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5916 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5917 ]
5918 );
5919 });
5920 }
5921
5922 #[gpui::test]
5923 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5924 let settings = EditorSettings::test(&cx);
5925 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5926 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5927
5928 view.update(cx, |view, cx| {
5929 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
5930 });
5931 view.update(cx, |view, cx| {
5932 view.add_selection_above(&AddSelectionAbove, cx);
5933 assert_eq!(
5934 view.selected_display_ranges(cx),
5935 vec![
5936 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5937 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5938 ]
5939 );
5940 });
5941
5942 view.update(cx, |view, cx| {
5943 view.add_selection_above(&AddSelectionAbove, cx);
5944 assert_eq!(
5945 view.selected_display_ranges(cx),
5946 vec![
5947 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5948 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5949 ]
5950 );
5951 });
5952
5953 view.update(cx, |view, cx| {
5954 view.add_selection_below(&AddSelectionBelow, cx);
5955 assert_eq!(
5956 view.selected_display_ranges(cx),
5957 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5958 );
5959 });
5960
5961 view.update(cx, |view, cx| {
5962 view.add_selection_below(&AddSelectionBelow, cx);
5963 assert_eq!(
5964 view.selected_display_ranges(cx),
5965 vec![
5966 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5967 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5968 ]
5969 );
5970 });
5971
5972 view.update(cx, |view, cx| {
5973 view.add_selection_below(&AddSelectionBelow, cx);
5974 assert_eq!(
5975 view.selected_display_ranges(cx),
5976 vec![
5977 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5978 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5979 ]
5980 );
5981 });
5982
5983 view.update(cx, |view, cx| {
5984 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
5985 });
5986 view.update(cx, |view, cx| {
5987 view.add_selection_below(&AddSelectionBelow, cx);
5988 assert_eq!(
5989 view.selected_display_ranges(cx),
5990 vec![
5991 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5992 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5993 ]
5994 );
5995 });
5996
5997 view.update(cx, |view, cx| {
5998 view.add_selection_below(&AddSelectionBelow, cx);
5999 assert_eq!(
6000 view.selected_display_ranges(cx),
6001 vec![
6002 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6003 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6004 ]
6005 );
6006 });
6007
6008 view.update(cx, |view, cx| {
6009 view.add_selection_above(&AddSelectionAbove, cx);
6010 assert_eq!(
6011 view.selected_display_ranges(cx),
6012 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6013 );
6014 });
6015
6016 view.update(cx, |view, cx| {
6017 view.add_selection_above(&AddSelectionAbove, cx);
6018 assert_eq!(
6019 view.selected_display_ranges(cx),
6020 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6021 );
6022 });
6023
6024 view.update(cx, |view, cx| {
6025 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6026 view.add_selection_below(&AddSelectionBelow, cx);
6027 assert_eq!(
6028 view.selected_display_ranges(cx),
6029 vec![
6030 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6031 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6032 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6033 ]
6034 );
6035 });
6036
6037 view.update(cx, |view, cx| {
6038 view.add_selection_below(&AddSelectionBelow, cx);
6039 assert_eq!(
6040 view.selected_display_ranges(cx),
6041 vec![
6042 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6043 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6044 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6045 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6046 ]
6047 );
6048 });
6049
6050 view.update(cx, |view, cx| {
6051 view.add_selection_above(&AddSelectionAbove, cx);
6052 assert_eq!(
6053 view.selected_display_ranges(cx),
6054 vec![
6055 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6056 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6057 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6058 ]
6059 );
6060 });
6061
6062 view.update(cx, |view, cx| {
6063 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6064 });
6065 view.update(cx, |view, cx| {
6066 view.add_selection_above(&AddSelectionAbove, cx);
6067 assert_eq!(
6068 view.selected_display_ranges(cx),
6069 vec![
6070 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6071 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6072 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6073 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6074 ]
6075 );
6076 });
6077
6078 view.update(cx, |view, cx| {
6079 view.add_selection_below(&AddSelectionBelow, cx);
6080 assert_eq!(
6081 view.selected_display_ranges(cx),
6082 vec![
6083 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6084 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6085 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6086 ]
6087 );
6088 });
6089 }
6090
6091 #[gpui::test]
6092 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6093 let settings = cx.read(EditorSettings::test);
6094 let language = Arc::new(Language::new(
6095 LanguageConfig::default(),
6096 Some(tree_sitter_rust::language()),
6097 ));
6098
6099 let text = r#"
6100 use mod1::mod2::{mod3, mod4};
6101
6102 fn fn_1(param1: bool, param2: &str) {
6103 let var1 = "text";
6104 }
6105 "#
6106 .unindent();
6107
6108 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6109 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6110 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6111 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6112 .await;
6113
6114 view.update(&mut cx, |view, cx| {
6115 view.select_display_ranges(
6116 &[
6117 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6118 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6119 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6120 ],
6121 cx,
6122 );
6123 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6124 });
6125 assert_eq!(
6126 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6127 &[
6128 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6129 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6130 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6131 ]
6132 );
6133
6134 view.update(&mut cx, |view, cx| {
6135 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6136 });
6137 assert_eq!(
6138 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6139 &[
6140 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6141 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6142 ]
6143 );
6144
6145 view.update(&mut cx, |view, cx| {
6146 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6147 });
6148 assert_eq!(
6149 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6150 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6151 );
6152
6153 // Trying to expand the selected syntax node one more time has no effect.
6154 view.update(&mut cx, |view, cx| {
6155 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6156 });
6157 assert_eq!(
6158 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6159 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6160 );
6161
6162 view.update(&mut cx, |view, cx| {
6163 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6164 });
6165 assert_eq!(
6166 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6167 &[
6168 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6169 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6170 ]
6171 );
6172
6173 view.update(&mut cx, |view, cx| {
6174 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6175 });
6176 assert_eq!(
6177 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6178 &[
6179 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6180 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6181 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6182 ]
6183 );
6184
6185 view.update(&mut cx, |view, cx| {
6186 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6187 });
6188 assert_eq!(
6189 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6190 &[
6191 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6192 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6193 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6194 ]
6195 );
6196
6197 // Trying to shrink the selected syntax node one more time has no effect.
6198 view.update(&mut cx, |view, cx| {
6199 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6200 });
6201 assert_eq!(
6202 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6203 &[
6204 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6205 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6206 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6207 ]
6208 );
6209
6210 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6211 // a fold.
6212 view.update(&mut cx, |view, cx| {
6213 view.fold_ranges(
6214 vec![
6215 Point::new(0, 21)..Point::new(0, 24),
6216 Point::new(3, 20)..Point::new(3, 22),
6217 ],
6218 cx,
6219 );
6220 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6221 });
6222 assert_eq!(
6223 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6224 &[
6225 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6226 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6227 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6228 ]
6229 );
6230 }
6231
6232 #[gpui::test]
6233 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6234 let settings = cx.read(EditorSettings::test);
6235 let language = Arc::new(
6236 Language::new(
6237 LanguageConfig {
6238 brackets: vec![
6239 BracketPair {
6240 start: "{".to_string(),
6241 end: "}".to_string(),
6242 close: false,
6243 newline: true,
6244 },
6245 BracketPair {
6246 start: "(".to_string(),
6247 end: ")".to_string(),
6248 close: false,
6249 newline: true,
6250 },
6251 ],
6252 ..Default::default()
6253 },
6254 Some(tree_sitter_rust::language()),
6255 )
6256 .with_indents_query(
6257 r#"
6258 (_ "(" ")" @end) @indent
6259 (_ "{" "}" @end) @indent
6260 "#,
6261 )
6262 .unwrap(),
6263 );
6264
6265 let text = "fn a() {}";
6266
6267 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6268 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6269 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6270 editor
6271 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6272 .await;
6273
6274 editor.update(&mut cx, |editor, cx| {
6275 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6276 editor.newline(&Newline, cx);
6277 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6278 assert_eq!(
6279 editor.selected_ranges(cx),
6280 &[
6281 Point::new(1, 4)..Point::new(1, 4),
6282 Point::new(3, 4)..Point::new(3, 4),
6283 Point::new(5, 0)..Point::new(5, 0)
6284 ]
6285 );
6286 });
6287 }
6288
6289 #[gpui::test]
6290 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6291 let settings = cx.read(EditorSettings::test);
6292 let language = Arc::new(Language::new(
6293 LanguageConfig {
6294 brackets: vec![
6295 BracketPair {
6296 start: "{".to_string(),
6297 end: "}".to_string(),
6298 close: true,
6299 newline: true,
6300 },
6301 BracketPair {
6302 start: "/*".to_string(),
6303 end: " */".to_string(),
6304 close: true,
6305 newline: true,
6306 },
6307 ],
6308 ..Default::default()
6309 },
6310 Some(tree_sitter_rust::language()),
6311 ));
6312
6313 let text = r#"
6314 a
6315
6316 /
6317
6318 "#
6319 .unindent();
6320
6321 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6322 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6323 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6324 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6325 .await;
6326
6327 view.update(&mut cx, |view, cx| {
6328 view.select_display_ranges(
6329 &[
6330 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6331 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6332 ],
6333 cx,
6334 );
6335 view.handle_input(&Input("{".to_string()), cx);
6336 view.handle_input(&Input("{".to_string()), cx);
6337 view.handle_input(&Input("{".to_string()), cx);
6338 assert_eq!(
6339 view.text(cx),
6340 "
6341 {{{}}}
6342 {{{}}}
6343 /
6344
6345 "
6346 .unindent()
6347 );
6348
6349 view.move_right(&MoveRight, cx);
6350 view.handle_input(&Input("}".to_string()), cx);
6351 view.handle_input(&Input("}".to_string()), cx);
6352 view.handle_input(&Input("}".to_string()), cx);
6353 assert_eq!(
6354 view.text(cx),
6355 "
6356 {{{}}}}
6357 {{{}}}}
6358 /
6359
6360 "
6361 .unindent()
6362 );
6363
6364 view.undo(&Undo, cx);
6365 view.handle_input(&Input("/".to_string()), cx);
6366 view.handle_input(&Input("*".to_string()), cx);
6367 assert_eq!(
6368 view.text(cx),
6369 "
6370 /* */
6371 /* */
6372 /
6373
6374 "
6375 .unindent()
6376 );
6377
6378 view.undo(&Undo, cx);
6379 view.select_display_ranges(
6380 &[
6381 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6382 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6383 ],
6384 cx,
6385 );
6386 view.handle_input(&Input("*".to_string()), cx);
6387 assert_eq!(
6388 view.text(cx),
6389 "
6390 a
6391
6392 /*
6393 *
6394 "
6395 .unindent()
6396 );
6397 });
6398 }
6399
6400 #[gpui::test]
6401 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6402 let settings = cx.read(EditorSettings::test);
6403 let language = Arc::new(Language::new(
6404 LanguageConfig {
6405 line_comment: Some("// ".to_string()),
6406 ..Default::default()
6407 },
6408 Some(tree_sitter_rust::language()),
6409 ));
6410
6411 let text = "
6412 fn a() {
6413 //b();
6414 // c();
6415 // d();
6416 }
6417 "
6418 .unindent();
6419
6420 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6421 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6422 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6423
6424 view.update(&mut cx, |editor, cx| {
6425 // If multiple selections intersect a line, the line is only
6426 // toggled once.
6427 editor.select_display_ranges(
6428 &[
6429 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6430 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6431 ],
6432 cx,
6433 );
6434 editor.toggle_comments(&ToggleComments, cx);
6435 assert_eq!(
6436 editor.text(cx),
6437 "
6438 fn a() {
6439 b();
6440 c();
6441 d();
6442 }
6443 "
6444 .unindent()
6445 );
6446
6447 // The comment prefix is inserted at the same column for every line
6448 // in a selection.
6449 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
6450 editor.toggle_comments(&ToggleComments, cx);
6451 assert_eq!(
6452 editor.text(cx),
6453 "
6454 fn a() {
6455 // b();
6456 // c();
6457 // d();
6458 }
6459 "
6460 .unindent()
6461 );
6462
6463 // If a selection ends at the beginning of a line, that line is not toggled.
6464 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
6465 editor.toggle_comments(&ToggleComments, cx);
6466 assert_eq!(
6467 editor.text(cx),
6468 "
6469 fn a() {
6470 // b();
6471 c();
6472 // d();
6473 }
6474 "
6475 .unindent()
6476 );
6477 });
6478 }
6479
6480 #[gpui::test]
6481 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6482 let settings = EditorSettings::test(cx);
6483 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6484 let multibuffer = cx.add_model(|cx| {
6485 let mut multibuffer = MultiBuffer::new(0);
6486 multibuffer.push_excerpt(
6487 ExcerptProperties {
6488 buffer: &buffer,
6489 range: Point::new(0, 0)..Point::new(0, 4),
6490 },
6491 cx,
6492 );
6493 multibuffer.push_excerpt(
6494 ExcerptProperties {
6495 buffer: &buffer,
6496 range: Point::new(1, 0)..Point::new(1, 4),
6497 },
6498 cx,
6499 );
6500 multibuffer
6501 });
6502
6503 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6504
6505 let (_, view) = cx.add_window(Default::default(), |cx| {
6506 build_editor(multibuffer, settings, cx)
6507 });
6508 view.update(cx, |view, cx| {
6509 view.select_display_ranges(
6510 &[
6511 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6512 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6513 ],
6514 cx,
6515 );
6516
6517 view.handle_input(&Input("X".to_string()), cx);
6518 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 &[
6522 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6523 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6524 ]
6525 )
6526 });
6527 }
6528
6529 #[gpui::test]
6530 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6531 let settings = EditorSettings::test(cx);
6532 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6533 let multibuffer = cx.add_model(|cx| {
6534 let mut multibuffer = MultiBuffer::new(0);
6535 multibuffer.push_excerpt(
6536 ExcerptProperties {
6537 buffer: &buffer,
6538 range: Point::new(0, 0)..Point::new(1, 4),
6539 },
6540 cx,
6541 );
6542 multibuffer.push_excerpt(
6543 ExcerptProperties {
6544 buffer: &buffer,
6545 range: Point::new(1, 0)..Point::new(2, 4),
6546 },
6547 cx,
6548 );
6549 multibuffer
6550 });
6551
6552 assert_eq!(
6553 multibuffer.read(cx).read(cx).text(),
6554 "aaaa\nbbbb\nbbbb\ncccc"
6555 );
6556
6557 let (_, view) = cx.add_window(Default::default(), |cx| {
6558 build_editor(multibuffer, settings, cx)
6559 });
6560 view.update(cx, |view, cx| {
6561 view.select_display_ranges(
6562 &[
6563 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6564 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6565 ],
6566 cx,
6567 );
6568
6569 view.handle_input(&Input("X".to_string()), cx);
6570 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 &[
6574 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6575 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6576 ]
6577 );
6578
6579 view.newline(&Newline, cx);
6580 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
6581 assert_eq!(
6582 view.selected_display_ranges(cx),
6583 &[
6584 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6585 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6586 ]
6587 );
6588 });
6589 }
6590
6591 #[gpui::test]
6592 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
6593 let settings = EditorSettings::test(cx);
6594 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6595 let mut excerpt1_id = None;
6596 let multibuffer = cx.add_model(|cx| {
6597 let mut multibuffer = MultiBuffer::new(0);
6598 excerpt1_id = Some(multibuffer.push_excerpt(
6599 ExcerptProperties {
6600 buffer: &buffer,
6601 range: Point::new(0, 0)..Point::new(1, 4),
6602 },
6603 cx,
6604 ));
6605 multibuffer.push_excerpt(
6606 ExcerptProperties {
6607 buffer: &buffer,
6608 range: Point::new(1, 0)..Point::new(2, 4),
6609 },
6610 cx,
6611 );
6612 multibuffer
6613 });
6614 assert_eq!(
6615 multibuffer.read(cx).read(cx).text(),
6616 "aaaa\nbbbb\nbbbb\ncccc"
6617 );
6618 let (_, editor) = cx.add_window(Default::default(), |cx| {
6619 let mut editor = build_editor(multibuffer.clone(), settings, cx);
6620 editor.select_display_ranges(
6621 &[
6622 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6623 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6624 ],
6625 cx,
6626 );
6627 editor
6628 });
6629
6630 // Refreshing selections is a no-op when excerpts haven't changed.
6631 editor.update(cx, |editor, cx| {
6632 editor.refresh_selections(cx);
6633 assert_eq!(
6634 editor.selected_display_ranges(cx),
6635 [
6636 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6637 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6638 ]
6639 );
6640 });
6641
6642 multibuffer.update(cx, |multibuffer, cx| {
6643 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
6644 });
6645 editor.update(cx, |editor, cx| {
6646 // Removing an excerpt causes the first selection to become degenerate.
6647 assert_eq!(
6648 editor.selected_display_ranges(cx),
6649 [
6650 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6651 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6652 ]
6653 );
6654
6655 // Refreshing selections will relocate the first selection to the original buffer
6656 // location.
6657 editor.refresh_selections(cx);
6658 assert_eq!(
6659 editor.selected_display_ranges(cx),
6660 [
6661 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6662 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
6663 ]
6664 );
6665 });
6666 }
6667
6668 #[gpui::test]
6669 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6670 let settings = cx.read(EditorSettings::test);
6671 let language = Arc::new(Language::new(
6672 LanguageConfig {
6673 brackets: vec![
6674 BracketPair {
6675 start: "{".to_string(),
6676 end: "}".to_string(),
6677 close: true,
6678 newline: true,
6679 },
6680 BracketPair {
6681 start: "/* ".to_string(),
6682 end: " */".to_string(),
6683 close: true,
6684 newline: true,
6685 },
6686 ],
6687 ..Default::default()
6688 },
6689 Some(tree_sitter_rust::language()),
6690 ));
6691
6692 let text = concat!(
6693 "{ }\n", // Suppress rustfmt
6694 " x\n", //
6695 " /* */\n", //
6696 "x\n", //
6697 "{{} }\n", //
6698 );
6699
6700 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6701 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6702 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6703 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6704 .await;
6705
6706 view.update(&mut cx, |view, cx| {
6707 view.select_display_ranges(
6708 &[
6709 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6710 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6711 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6712 ],
6713 cx,
6714 );
6715 view.newline(&Newline, cx);
6716
6717 assert_eq!(
6718 view.buffer().read(cx).read(cx).text(),
6719 concat!(
6720 "{ \n", // Suppress rustfmt
6721 "\n", //
6722 "}\n", //
6723 " x\n", //
6724 " /* \n", //
6725 " \n", //
6726 " */\n", //
6727 "x\n", //
6728 "{{} \n", //
6729 "}\n", //
6730 )
6731 );
6732 });
6733 }
6734
6735 #[gpui::test]
6736 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
6737 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
6738 let settings = EditorSettings::test(&cx);
6739 let (_, editor) = cx.add_window(Default::default(), |cx| {
6740 build_editor(buffer.clone(), settings, cx)
6741 });
6742
6743 editor.update(cx, |editor, cx| {
6744 struct Type1;
6745 struct Type2;
6746
6747 let buffer = buffer.read(cx).snapshot(cx);
6748
6749 let anchor_range = |range: Range<Point>| {
6750 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
6751 };
6752
6753 editor.highlight_ranges::<Type1>(
6754 vec![
6755 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
6756 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
6757 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
6758 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
6759 ],
6760 Color::red(),
6761 cx,
6762 );
6763 editor.highlight_ranges::<Type2>(
6764 vec![
6765 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
6766 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
6767 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
6768 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
6769 ],
6770 Color::green(),
6771 cx,
6772 );
6773
6774 let snapshot = editor.snapshot(cx);
6775 assert_eq!(
6776 editor.highlighted_ranges_in_range(
6777 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
6778 &snapshot,
6779 ),
6780 &[
6781 (
6782 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
6783 Color::red(),
6784 ),
6785 (
6786 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
6787 Color::red(),
6788 ),
6789 (
6790 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
6791 Color::green(),
6792 ),
6793 (
6794 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
6795 Color::green(),
6796 ),
6797 ]
6798 );
6799 assert_eq!(
6800 editor.highlighted_ranges_in_range(
6801 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
6802 &snapshot,
6803 ),
6804 &[(
6805 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
6806 Color::red(),
6807 )]
6808 );
6809 });
6810 }
6811
6812 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6813 let point = DisplayPoint::new(row as u32, column as u32);
6814 point..point
6815 }
6816
6817 fn build_editor(
6818 buffer: ModelHandle<MultiBuffer>,
6819 settings: EditorSettings,
6820 cx: &mut ViewContext<Editor>,
6821 ) -> Editor {
6822 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6823 }
6824}
6825
6826trait RangeExt<T> {
6827 fn sorted(&self) -> Range<T>;
6828 fn to_inclusive(&self) -> RangeInclusive<T>;
6829}
6830
6831impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6832 fn sorted(&self) -> Self {
6833 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6834 }
6835
6836 fn to_inclusive(&self) -> RangeInclusive<T> {
6837 self.start.clone()..=self.end.clone()
6838 }
6839}