1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use clock::ReplicaId;
12use collections::{BTreeMap, HashMap, HashSet};
13pub use display_map::DisplayPoint;
14use display_map::*;
15pub use element::*;
16use gpui::{
17 action,
18 color::Color,
19 elements::*,
20 fonts::TextStyle,
21 geometry::vector::{vec2f, Vector2F},
22 keymap::Binding,
23 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
24 MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle,
25};
26use items::BufferItemHandle;
27use itertools::Itertools as _;
28use language::{
29 AnchorRangeExt as _, BracketPair, Buffer, Completion, Diagnostic, DiagnosticSeverity, Language,
30 Point, Selection, SelectionGoal, TransactionId,
31};
32use multi_buffer::MultiBufferChunks;
33pub use multi_buffer::{
34 Anchor, AnchorRangeExt, ExcerptId, ExcerptProperties, MultiBuffer, MultiBufferSnapshot,
35 ToOffset, ToPoint,
36};
37use postage::watch;
38use serde::{Deserialize, Serialize};
39use smallvec::SmallVec;
40use smol::Timer;
41use std::{
42 any::TypeId,
43 cmp::{self, Ordering},
44 iter::{self, FromIterator},
45 mem,
46 ops::{Deref, Range, RangeInclusive, Sub},
47 sync::Arc,
48 time::{Duration, Instant},
49};
50pub use sum_tree::Bias;
51use text::rope::TextDimension;
52use theme::{DiagnosticStyle, EditorStyle};
53use util::post_inc;
54use workspace::{ItemNavHistory, PathOpener, Workspace};
55
56const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
57const MAX_LINE_LEN: usize = 1024;
58const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
59
60action!(Cancel);
61action!(Backspace);
62action!(Delete);
63action!(Input, String);
64action!(Newline);
65action!(Tab);
66action!(Outdent);
67action!(DeleteLine);
68action!(DeleteToPreviousWordBoundary);
69action!(DeleteToNextWordBoundary);
70action!(DeleteToBeginningOfLine);
71action!(DeleteToEndOfLine);
72action!(CutToEndOfLine);
73action!(DuplicateLine);
74action!(MoveLineUp);
75action!(MoveLineDown);
76action!(Cut);
77action!(Copy);
78action!(Paste);
79action!(Undo);
80action!(Redo);
81action!(MoveUp);
82action!(MoveDown);
83action!(MoveLeft);
84action!(MoveRight);
85action!(MoveToPreviousWordBoundary);
86action!(MoveToNextWordBoundary);
87action!(MoveToBeginningOfLine);
88action!(MoveToEndOfLine);
89action!(MoveToBeginning);
90action!(MoveToEnd);
91action!(SelectUp);
92action!(SelectDown);
93action!(SelectLeft);
94action!(SelectRight);
95action!(SelectToPreviousWordBoundary);
96action!(SelectToNextWordBoundary);
97action!(SelectToBeginningOfLine, bool);
98action!(SelectToEndOfLine);
99action!(SelectToBeginning);
100action!(SelectToEnd);
101action!(SelectAll);
102action!(SelectLine);
103action!(SplitSelectionIntoLines);
104action!(AddSelectionAbove);
105action!(AddSelectionBelow);
106action!(SelectNext, bool);
107action!(ToggleComments);
108action!(SelectLargerSyntaxNode);
109action!(SelectSmallerSyntaxNode);
110action!(MoveToEnclosingBracket);
111action!(ShowNextDiagnostic);
112action!(GoToDefinition);
113action!(PageUp);
114action!(PageDown);
115action!(Fold);
116action!(Unfold);
117action!(FoldSelectedRanges);
118action!(Scroll, Vector2F);
119action!(Select, SelectPhase);
120action!(ShowCompletions);
121action!(ConfirmCompletion);
122
123pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
124 path_openers.push(Box::new(items::BufferOpener));
125 cx.add_bindings(vec![
126 Binding::new("escape", Cancel, Some("Editor")),
127 Binding::new("backspace", Backspace, Some("Editor")),
128 Binding::new("ctrl-h", Backspace, Some("Editor")),
129 Binding::new("delete", Delete, Some("Editor")),
130 Binding::new("ctrl-d", Delete, Some("Editor")),
131 Binding::new("enter", Newline, Some("Editor && mode == full")),
132 Binding::new(
133 "alt-enter",
134 Input("\n".into()),
135 Some("Editor && mode == auto_height"),
136 ),
137 Binding::new("enter", ConfirmCompletion, Some("Editor && completing")),
138 Binding::new("tab", Tab, Some("Editor")),
139 Binding::new("shift-tab", Outdent, Some("Editor")),
140 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
141 Binding::new(
142 "alt-backspace",
143 DeleteToPreviousWordBoundary,
144 Some("Editor"),
145 ),
146 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
147 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
148 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
149 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
150 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
151 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
152 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
153 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
154 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
155 Binding::new("cmd-x", Cut, Some("Editor")),
156 Binding::new("cmd-c", Copy, Some("Editor")),
157 Binding::new("cmd-v", Paste, Some("Editor")),
158 Binding::new("cmd-z", Undo, Some("Editor")),
159 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
160 Binding::new("up", MoveUp, Some("Editor")),
161 Binding::new("down", MoveDown, Some("Editor")),
162 Binding::new("left", MoveLeft, Some("Editor")),
163 Binding::new("right", MoveRight, Some("Editor")),
164 Binding::new("ctrl-p", MoveUp, Some("Editor")),
165 Binding::new("ctrl-n", MoveDown, Some("Editor")),
166 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
167 Binding::new("ctrl-f", MoveRight, Some("Editor")),
168 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
169 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
170 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
171 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
172 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
173 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
174 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
175 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
176 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
177 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
178 Binding::new("shift-up", SelectUp, Some("Editor")),
179 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
180 Binding::new("shift-down", SelectDown, Some("Editor")),
181 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
182 Binding::new("shift-left", SelectLeft, Some("Editor")),
183 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
184 Binding::new("shift-right", SelectRight, Some("Editor")),
185 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
186 Binding::new(
187 "alt-shift-left",
188 SelectToPreviousWordBoundary,
189 Some("Editor"),
190 ),
191 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
192 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
193 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
194 Binding::new(
195 "cmd-shift-left",
196 SelectToBeginningOfLine(true),
197 Some("Editor"),
198 ),
199 Binding::new(
200 "ctrl-shift-A",
201 SelectToBeginningOfLine(true),
202 Some("Editor"),
203 ),
204 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
205 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
206 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
207 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
208 Binding::new("cmd-a", SelectAll, Some("Editor")),
209 Binding::new("cmd-l", SelectLine, Some("Editor")),
210 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
211 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
212 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
213 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
214 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
215 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
216 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
217 Binding::new("cmd-/", ToggleComments, Some("Editor")),
218 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
219 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
220 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
221 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
222 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
223 Binding::new("f12", GoToDefinition, Some("Editor")),
224 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
225 Binding::new("pageup", PageUp, Some("Editor")),
226 Binding::new("pagedown", PageDown, Some("Editor")),
227 Binding::new("alt-cmd-[", Fold, Some("Editor")),
228 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
229 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
230 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
231 ]);
232
233 cx.add_action(Editor::open_new);
234 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
235 cx.add_action(Editor::select);
236 cx.add_action(Editor::cancel);
237 cx.add_action(Editor::handle_input);
238 cx.add_action(Editor::newline);
239 cx.add_action(Editor::backspace);
240 cx.add_action(Editor::delete);
241 cx.add_action(Editor::tab);
242 cx.add_action(Editor::outdent);
243 cx.add_action(Editor::delete_line);
244 cx.add_action(Editor::delete_to_previous_word_boundary);
245 cx.add_action(Editor::delete_to_next_word_boundary);
246 cx.add_action(Editor::delete_to_beginning_of_line);
247 cx.add_action(Editor::delete_to_end_of_line);
248 cx.add_action(Editor::cut_to_end_of_line);
249 cx.add_action(Editor::duplicate_line);
250 cx.add_action(Editor::move_line_up);
251 cx.add_action(Editor::move_line_down);
252 cx.add_action(Editor::cut);
253 cx.add_action(Editor::copy);
254 cx.add_action(Editor::paste);
255 cx.add_action(Editor::undo);
256 cx.add_action(Editor::redo);
257 cx.add_action(Editor::move_up);
258 cx.add_action(Editor::move_down);
259 cx.add_action(Editor::move_left);
260 cx.add_action(Editor::move_right);
261 cx.add_action(Editor::move_to_previous_word_boundary);
262 cx.add_action(Editor::move_to_next_word_boundary);
263 cx.add_action(Editor::move_to_beginning_of_line);
264 cx.add_action(Editor::move_to_end_of_line);
265 cx.add_action(Editor::move_to_beginning);
266 cx.add_action(Editor::move_to_end);
267 cx.add_action(Editor::select_up);
268 cx.add_action(Editor::select_down);
269 cx.add_action(Editor::select_left);
270 cx.add_action(Editor::select_right);
271 cx.add_action(Editor::select_to_previous_word_boundary);
272 cx.add_action(Editor::select_to_next_word_boundary);
273 cx.add_action(Editor::select_to_beginning_of_line);
274 cx.add_action(Editor::select_to_end_of_line);
275 cx.add_action(Editor::select_to_beginning);
276 cx.add_action(Editor::select_to_end);
277 cx.add_action(Editor::select_all);
278 cx.add_action(Editor::select_line);
279 cx.add_action(Editor::split_selection_into_lines);
280 cx.add_action(Editor::add_selection_above);
281 cx.add_action(Editor::add_selection_below);
282 cx.add_action(Editor::select_next);
283 cx.add_action(Editor::toggle_comments);
284 cx.add_action(Editor::select_larger_syntax_node);
285 cx.add_action(Editor::select_smaller_syntax_node);
286 cx.add_action(Editor::move_to_enclosing_bracket);
287 cx.add_action(Editor::show_next_diagnostic);
288 cx.add_action(Editor::go_to_definition);
289 cx.add_action(Editor::page_up);
290 cx.add_action(Editor::page_down);
291 cx.add_action(Editor::fold);
292 cx.add_action(Editor::unfold);
293 cx.add_action(Editor::fold_selected_ranges);
294 cx.add_action(Editor::show_completions);
295 cx.add_action(Editor::confirm_completion);
296}
297
298trait SelectionExt {
299 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
300 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
301 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
302 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
303 -> Range<u32>;
304}
305
306#[derive(Clone, Debug)]
307pub enum SelectPhase {
308 Begin {
309 position: DisplayPoint,
310 add: bool,
311 click_count: usize,
312 },
313 BeginColumnar {
314 position: DisplayPoint,
315 overshoot: u32,
316 },
317 Extend {
318 position: DisplayPoint,
319 click_count: usize,
320 },
321 Update {
322 position: DisplayPoint,
323 overshoot: u32,
324 scroll_position: Vector2F,
325 },
326 End,
327}
328
329#[derive(Clone, Debug)]
330enum SelectMode {
331 Character,
332 Word(Range<Anchor>),
333 Line(Range<Anchor>),
334 All,
335}
336
337#[derive(PartialEq, Eq)]
338pub enum Autoscroll {
339 Fit,
340 Center,
341 Newest,
342}
343
344#[derive(Copy, Clone, PartialEq, Eq)]
345pub enum EditorMode {
346 SingleLine,
347 AutoHeight { max_lines: usize },
348 Full,
349}
350
351#[derive(Clone)]
352pub struct EditorSettings {
353 pub tab_size: usize,
354 pub soft_wrap: SoftWrap,
355 pub style: EditorStyle,
356}
357
358#[derive(Clone)]
359pub enum SoftWrap {
360 None,
361 EditorWidth,
362 Column(u32),
363}
364
365pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
366
367pub struct Editor {
368 handle: WeakViewHandle<Self>,
369 buffer: ModelHandle<MultiBuffer>,
370 display_map: ModelHandle<DisplayMap>,
371 next_selection_id: usize,
372 selections: Arc<[Selection<Anchor>]>,
373 pending_selection: Option<PendingSelection>,
374 columnar_selection_tail: Option<Anchor>,
375 add_selections_state: Option<AddSelectionsState>,
376 select_next_state: Option<SelectNextState>,
377 selection_history:
378 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
379 autoclose_stack: Vec<BracketPairState>,
380 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
381 active_diagnostics: Option<ActiveDiagnosticGroup>,
382 scroll_position: Vector2F,
383 scroll_top_anchor: Option<Anchor>,
384 autoscroll_request: Option<Autoscroll>,
385 build_settings: BuildSettings,
386 focused: bool,
387 show_local_cursors: bool,
388 blink_epoch: usize,
389 blinking_paused: bool,
390 mode: EditorMode,
391 vertical_scroll_margin: f32,
392 placeholder_text: Option<Arc<str>>,
393 highlighted_rows: Option<Range<u32>>,
394 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
395 nav_history: Option<ItemNavHistory>,
396 completion_state: Option<CompletionState>,
397}
398
399pub struct EditorSnapshot {
400 pub mode: EditorMode,
401 pub display_snapshot: DisplaySnapshot,
402 pub placeholder_text: Option<Arc<str>>,
403 is_focused: bool,
404 scroll_position: Vector2F,
405 scroll_top_anchor: Option<Anchor>,
406}
407
408struct PendingSelection {
409 selection: Selection<Anchor>,
410 mode: SelectMode,
411}
412
413struct AddSelectionsState {
414 above: bool,
415 stack: Vec<usize>,
416}
417
418struct SelectNextState {
419 query: AhoCorasick,
420 wordwise: bool,
421 done: bool,
422}
423
424#[derive(Debug)]
425struct BracketPairState {
426 ranges: Vec<Range<Anchor>>,
427 pair: BracketPair,
428}
429
430struct CompletionState {
431 completions: Arc<[Completion<Anchor>]>,
432 selected_item: usize,
433 list: UniformListState,
434}
435
436#[derive(Debug)]
437struct ActiveDiagnosticGroup {
438 primary_range: Range<Anchor>,
439 primary_message: String,
440 blocks: HashMap<BlockId, Diagnostic>,
441 is_valid: bool,
442}
443
444#[derive(Serialize, Deserialize)]
445struct ClipboardSelection {
446 len: usize,
447 is_entire_line: bool,
448}
449
450pub struct NavigationData {
451 anchor: Anchor,
452 offset: usize,
453}
454
455#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord)]
456pub enum CharKind {
457 Newline,
458 Punctuation,
459 Whitespace,
460 Word,
461}
462
463impl Editor {
464 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
465 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
466 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
467 let mut view = Self::for_buffer(buffer, build_settings, cx);
468 view.mode = EditorMode::SingleLine;
469 view
470 }
471
472 pub fn auto_height(
473 max_lines: usize,
474 build_settings: BuildSettings,
475 cx: &mut ViewContext<Self>,
476 ) -> Self {
477 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
478 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
479 let mut view = Self::for_buffer(buffer, build_settings, cx);
480 view.mode = EditorMode::AutoHeight { max_lines };
481 view
482 }
483
484 pub fn for_buffer(
485 buffer: ModelHandle<MultiBuffer>,
486 build_settings: BuildSettings,
487 cx: &mut ViewContext<Self>,
488 ) -> Self {
489 Self::new(buffer, build_settings, cx)
490 }
491
492 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
493 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
494 clone.scroll_position = self.scroll_position;
495 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
496 clone.nav_history = self
497 .nav_history
498 .as_ref()
499 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
500 clone
501 }
502
503 pub fn new(
504 buffer: ModelHandle<MultiBuffer>,
505 build_settings: BuildSettings,
506 cx: &mut ViewContext<Self>,
507 ) -> Self {
508 let settings = build_settings(cx);
509 let display_map = cx.add_model(|cx| {
510 DisplayMap::new(
511 buffer.clone(),
512 settings.tab_size,
513 settings.style.text.font_id,
514 settings.style.text.font_size,
515 None,
516 cx,
517 )
518 });
519 cx.observe(&buffer, Self::on_buffer_changed).detach();
520 cx.subscribe(&buffer, Self::on_buffer_event).detach();
521 cx.observe(&display_map, Self::on_display_map_changed)
522 .detach();
523
524 let mut this = Self {
525 handle: cx.weak_handle(),
526 buffer,
527 display_map,
528 selections: Arc::from([]),
529 pending_selection: None,
530 columnar_selection_tail: None,
531 next_selection_id: 0,
532 add_selections_state: None,
533 select_next_state: None,
534 selection_history: Default::default(),
535 autoclose_stack: Default::default(),
536 select_larger_syntax_node_stack: Vec::new(),
537 active_diagnostics: None,
538 build_settings,
539 scroll_position: Vector2F::zero(),
540 scroll_top_anchor: None,
541 autoscroll_request: None,
542 focused: false,
543 show_local_cursors: false,
544 blink_epoch: 0,
545 blinking_paused: false,
546 mode: EditorMode::Full,
547 vertical_scroll_margin: 3.0,
548 placeholder_text: None,
549 highlighted_rows: None,
550 highlighted_ranges: Default::default(),
551 nav_history: None,
552 completion_state: None,
553 };
554 let selection = Selection {
555 id: post_inc(&mut this.next_selection_id),
556 start: 0,
557 end: 0,
558 reversed: false,
559 goal: SelectionGoal::None,
560 };
561 this.update_selections(vec![selection], None, cx);
562 this
563 }
564
565 pub fn open_new(
566 workspace: &mut Workspace,
567 _: &workspace::OpenNew,
568 cx: &mut ViewContext<Workspace>,
569 ) {
570 let buffer = cx
571 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
572 workspace.open_item(BufferItemHandle(buffer), cx);
573 }
574
575 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
576 self.buffer.read(cx).replica_id()
577 }
578
579 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
580 &self.buffer
581 }
582
583 pub fn title(&self, cx: &AppContext) -> String {
584 let filename = self
585 .buffer()
586 .read(cx)
587 .file(cx)
588 .map(|file| file.file_name(cx));
589 if let Some(name) = filename {
590 name.to_string_lossy().into()
591 } else {
592 "untitled".into()
593 }
594 }
595
596 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
597 EditorSnapshot {
598 mode: self.mode,
599 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
600 scroll_position: self.scroll_position,
601 scroll_top_anchor: self.scroll_top_anchor.clone(),
602 placeholder_text: self.placeholder_text.clone(),
603 is_focused: self
604 .handle
605 .upgrade(cx)
606 .map_or(false, |handle| handle.is_focused(cx)),
607 }
608 }
609
610 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
611 self.buffer.read(cx).language(cx)
612 }
613
614 pub fn set_placeholder_text(
615 &mut self,
616 placeholder_text: impl Into<Arc<str>>,
617 cx: &mut ViewContext<Self>,
618 ) {
619 self.placeholder_text = Some(placeholder_text.into());
620 cx.notify();
621 }
622
623 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
624 self.vertical_scroll_margin = margin_rows as f32;
625 cx.notify();
626 }
627
628 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
629 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
630
631 if scroll_position.y() == 0. {
632 self.scroll_top_anchor = None;
633 self.scroll_position = scroll_position;
634 } else {
635 let scroll_top_buffer_offset =
636 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
637 let anchor = map
638 .buffer_snapshot
639 .anchor_at(scroll_top_buffer_offset, Bias::Right);
640 self.scroll_position = vec2f(
641 scroll_position.x(),
642 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
643 );
644 self.scroll_top_anchor = Some(anchor);
645 }
646
647 cx.notify();
648 }
649
650 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
651 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
652 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
653 }
654
655 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
656 if max < self.scroll_position.x() {
657 self.scroll_position.set_x(max);
658 true
659 } else {
660 false
661 }
662 }
663
664 pub fn autoscroll_vertically(
665 &mut self,
666 viewport_height: f32,
667 line_height: f32,
668 cx: &mut ViewContext<Self>,
669 ) -> bool {
670 let visible_lines = viewport_height / line_height;
671 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
672 let mut scroll_position =
673 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
674 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
675 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
676 } else {
677 display_map.max_point().row().saturating_sub(1) as f32
678 };
679 if scroll_position.y() > max_scroll_top {
680 scroll_position.set_y(max_scroll_top);
681 self.set_scroll_position(scroll_position, cx);
682 }
683
684 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
685 autoscroll
686 } else {
687 return false;
688 };
689
690 let first_cursor_top;
691 let last_cursor_bottom;
692 if let Some(highlighted_rows) = &self.highlighted_rows {
693 first_cursor_top = highlighted_rows.start as f32;
694 last_cursor_bottom = first_cursor_top + 1.;
695 } else if autoscroll == Autoscroll::Newest {
696 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
697 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
698 last_cursor_bottom = first_cursor_top + 1.;
699 } else {
700 let selections = self.local_selections::<Point>(cx);
701 first_cursor_top = selections
702 .first()
703 .unwrap()
704 .head()
705 .to_display_point(&display_map)
706 .row() as f32;
707 last_cursor_bottom = selections
708 .last()
709 .unwrap()
710 .head()
711 .to_display_point(&display_map)
712 .row() as f32
713 + 1.0;
714 }
715
716 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
717 0.
718 } else {
719 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
720 };
721 if margin < 0.0 {
722 return false;
723 }
724
725 match autoscroll {
726 Autoscroll::Fit | Autoscroll::Newest => {
727 let margin = margin.min(self.vertical_scroll_margin);
728 let target_top = (first_cursor_top - margin).max(0.0);
729 let target_bottom = last_cursor_bottom + margin;
730 let start_row = scroll_position.y();
731 let end_row = start_row + visible_lines;
732
733 if target_top < start_row {
734 scroll_position.set_y(target_top);
735 self.set_scroll_position(scroll_position, cx);
736 } else if target_bottom >= end_row {
737 scroll_position.set_y(target_bottom - visible_lines);
738 self.set_scroll_position(scroll_position, cx);
739 }
740 }
741 Autoscroll::Center => {
742 scroll_position.set_y((first_cursor_top - margin).max(0.0));
743 self.set_scroll_position(scroll_position, cx);
744 }
745 }
746
747 true
748 }
749
750 pub fn autoscroll_horizontally(
751 &mut self,
752 start_row: u32,
753 viewport_width: f32,
754 scroll_width: f32,
755 max_glyph_width: f32,
756 layouts: &[text_layout::Line],
757 cx: &mut ViewContext<Self>,
758 ) -> bool {
759 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
760 let selections = self.local_selections::<Point>(cx);
761
762 let mut target_left;
763 let mut target_right;
764
765 if self.highlighted_rows.is_some() {
766 target_left = 0.0_f32;
767 target_right = 0.0_f32;
768 } else {
769 target_left = std::f32::INFINITY;
770 target_right = 0.0_f32;
771 for selection in selections {
772 let head = selection.head().to_display_point(&display_map);
773 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
774 let start_column = head.column().saturating_sub(3);
775 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
776 target_left = target_left.min(
777 layouts[(head.row() - start_row) as usize]
778 .x_for_index(start_column as usize),
779 );
780 target_right = target_right.max(
781 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
782 + max_glyph_width,
783 );
784 }
785 }
786 }
787
788 target_right = target_right.min(scroll_width);
789
790 if target_right - target_left > viewport_width {
791 return false;
792 }
793
794 let scroll_left = self.scroll_position.x() * max_glyph_width;
795 let scroll_right = scroll_left + viewport_width;
796
797 if target_left < scroll_left {
798 self.scroll_position.set_x(target_left / max_glyph_width);
799 true
800 } else if target_right > scroll_right {
801 self.scroll_position
802 .set_x((target_right - viewport_width) / max_glyph_width);
803 true
804 } else {
805 false
806 }
807 }
808
809 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
810 match phase {
811 SelectPhase::Begin {
812 position,
813 add,
814 click_count,
815 } => self.begin_selection(*position, *add, *click_count, cx),
816 SelectPhase::BeginColumnar {
817 position,
818 overshoot,
819 } => self.begin_columnar_selection(*position, *overshoot, cx),
820 SelectPhase::Extend {
821 position,
822 click_count,
823 } => self.extend_selection(*position, *click_count, cx),
824 SelectPhase::Update {
825 position,
826 overshoot,
827 scroll_position,
828 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
829 SelectPhase::End => self.end_selection(cx),
830 }
831 }
832
833 fn extend_selection(
834 &mut self,
835 position: DisplayPoint,
836 click_count: usize,
837 cx: &mut ViewContext<Self>,
838 ) {
839 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
840 let tail = self
841 .newest_selection::<usize>(&display_map.buffer_snapshot)
842 .tail();
843 self.begin_selection(position, false, click_count, cx);
844
845 let position = position.to_offset(&display_map, Bias::Left);
846 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
847 let pending = self.pending_selection.as_mut().unwrap();
848
849 if position >= tail {
850 pending.selection.start = tail_anchor.clone();
851 } else {
852 pending.selection.end = tail_anchor.clone();
853 pending.selection.reversed = true;
854 }
855
856 match &mut pending.mode {
857 SelectMode::Word(range) | SelectMode::Line(range) => {
858 *range = tail_anchor.clone()..tail_anchor
859 }
860 _ => {}
861 }
862 }
863
864 fn begin_selection(
865 &mut self,
866 position: DisplayPoint,
867 add: bool,
868 click_count: usize,
869 cx: &mut ViewContext<Self>,
870 ) {
871 if !self.focused {
872 cx.focus_self();
873 cx.emit(Event::Activate);
874 }
875
876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
877 let buffer = &display_map.buffer_snapshot;
878 let newest_selection = self.newest_anchor_selection().unwrap().clone();
879
880 let start;
881 let end;
882 let mode;
883 match click_count {
884 1 => {
885 start = buffer.anchor_before(position.to_point(&display_map));
886 end = start.clone();
887 mode = SelectMode::Character;
888 }
889 2 => {
890 let range = movement::surrounding_word(&display_map, position);
891 start = buffer.anchor_before(range.start.to_point(&display_map));
892 end = buffer.anchor_before(range.end.to_point(&display_map));
893 mode = SelectMode::Word(start.clone()..end.clone());
894 }
895 3 => {
896 let position = display_map.clip_point(position, Bias::Left);
897 let line_start = movement::line_beginning(&display_map, position, false);
898 let mut next_line_start = line_start.clone();
899 *next_line_start.row_mut() += 1;
900 *next_line_start.column_mut() = 0;
901 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
902
903 start = buffer.anchor_before(line_start.to_point(&display_map));
904 end = buffer.anchor_before(next_line_start.to_point(&display_map));
905 mode = SelectMode::Line(start.clone()..end.clone());
906 }
907 _ => {
908 start = buffer.anchor_before(0);
909 end = buffer.anchor_before(buffer.len());
910 mode = SelectMode::All;
911 }
912 }
913
914 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
915
916 let selection = Selection {
917 id: post_inc(&mut self.next_selection_id),
918 start,
919 end,
920 reversed: false,
921 goal: SelectionGoal::None,
922 };
923
924 if !add {
925 self.update_selections::<usize>(Vec::new(), None, cx);
926 } else if click_count > 1 {
927 // Remove the newest selection since it was only added as part of this multi-click.
928 let mut selections = self.local_selections(cx);
929 selections.retain(|selection| selection.id != newest_selection.id);
930 self.update_selections::<usize>(selections, None, cx)
931 }
932
933 self.pending_selection = Some(PendingSelection { selection, mode });
934
935 cx.notify();
936 }
937
938 fn begin_columnar_selection(
939 &mut self,
940 position: DisplayPoint,
941 overshoot: u32,
942 cx: &mut ViewContext<Self>,
943 ) {
944 if !self.focused {
945 cx.focus_self();
946 cx.emit(Event::Activate);
947 }
948
949 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
950 let tail = self
951 .newest_selection::<Point>(&display_map.buffer_snapshot)
952 .tail();
953 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
954
955 self.select_columns(
956 tail.to_display_point(&display_map),
957 position,
958 overshoot,
959 &display_map,
960 cx,
961 );
962 }
963
964 fn update_selection(
965 &mut self,
966 position: DisplayPoint,
967 overshoot: u32,
968 scroll_position: Vector2F,
969 cx: &mut ViewContext<Self>,
970 ) {
971 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
972
973 if let Some(tail) = self.columnar_selection_tail.as_ref() {
974 let tail = tail.to_display_point(&display_map);
975 self.select_columns(tail, position, overshoot, &display_map, cx);
976 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
977 let buffer = self.buffer.read(cx).snapshot(cx);
978 let head;
979 let tail;
980 match mode {
981 SelectMode::Character => {
982 head = position.to_point(&display_map);
983 tail = selection.tail().to_point(&buffer);
984 }
985 SelectMode::Word(original_range) => {
986 let original_display_range = original_range.start.to_display_point(&display_map)
987 ..original_range.end.to_display_point(&display_map);
988 let original_buffer_range = original_display_range.start.to_point(&display_map)
989 ..original_display_range.end.to_point(&display_map);
990 if movement::is_inside_word(&display_map, position)
991 || original_display_range.contains(&position)
992 {
993 let word_range = movement::surrounding_word(&display_map, position);
994 if word_range.start < original_display_range.start {
995 head = word_range.start.to_point(&display_map);
996 } else {
997 head = word_range.end.to_point(&display_map);
998 }
999 } else {
1000 head = position.to_point(&display_map);
1001 }
1002
1003 if head <= original_buffer_range.start {
1004 tail = original_buffer_range.end;
1005 } else {
1006 tail = original_buffer_range.start;
1007 }
1008 }
1009 SelectMode::Line(original_range) => {
1010 let original_display_range = original_range.start.to_display_point(&display_map)
1011 ..original_range.end.to_display_point(&display_map);
1012 let original_buffer_range = original_display_range.start.to_point(&display_map)
1013 ..original_display_range.end.to_point(&display_map);
1014 let line_start = movement::line_beginning(&display_map, position, false);
1015 let mut next_line_start = line_start.clone();
1016 *next_line_start.row_mut() += 1;
1017 *next_line_start.column_mut() = 0;
1018 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
1019
1020 if line_start < original_display_range.start {
1021 head = line_start.to_point(&display_map);
1022 } else {
1023 head = next_line_start.to_point(&display_map);
1024 }
1025
1026 if head <= original_buffer_range.start {
1027 tail = original_buffer_range.end;
1028 } else {
1029 tail = original_buffer_range.start;
1030 }
1031 }
1032 SelectMode::All => {
1033 return;
1034 }
1035 };
1036
1037 if head < tail {
1038 selection.start = buffer.anchor_before(head);
1039 selection.end = buffer.anchor_before(tail);
1040 selection.reversed = true;
1041 } else {
1042 selection.start = buffer.anchor_before(tail);
1043 selection.end = buffer.anchor_before(head);
1044 selection.reversed = false;
1045 }
1046 } else {
1047 log::error!("update_selection dispatched with no pending selection");
1048 return;
1049 }
1050
1051 self.set_scroll_position(scroll_position, cx);
1052 cx.notify();
1053 }
1054
1055 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1056 self.columnar_selection_tail.take();
1057 if self.pending_selection.is_some() {
1058 let selections = self.local_selections::<usize>(cx);
1059 self.update_selections(selections, None, cx);
1060 }
1061 }
1062
1063 fn select_columns(
1064 &mut self,
1065 tail: DisplayPoint,
1066 head: DisplayPoint,
1067 overshoot: u32,
1068 display_map: &DisplaySnapshot,
1069 cx: &mut ViewContext<Self>,
1070 ) {
1071 let start_row = cmp::min(tail.row(), head.row());
1072 let end_row = cmp::max(tail.row(), head.row());
1073 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1074 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1075 let reversed = start_column < tail.column();
1076
1077 let selections = (start_row..=end_row)
1078 .filter_map(|row| {
1079 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1080 let start = display_map
1081 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1082 .to_point(&display_map);
1083 let end = display_map
1084 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1085 .to_point(&display_map);
1086 Some(Selection {
1087 id: post_inc(&mut self.next_selection_id),
1088 start,
1089 end,
1090 reversed,
1091 goal: SelectionGoal::None,
1092 })
1093 } else {
1094 None
1095 }
1096 })
1097 .collect::<Vec<_>>();
1098
1099 self.update_selections(selections, None, cx);
1100 cx.notify();
1101 }
1102
1103 pub fn is_selecting(&self) -> bool {
1104 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1105 }
1106
1107 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1108 if self.completion_state.take().is_some() {
1109 cx.notify();
1110 return;
1111 }
1112
1113 if self.mode != EditorMode::Full {
1114 cx.propagate_action();
1115 return;
1116 }
1117
1118 if self.active_diagnostics.is_some() {
1119 self.dismiss_diagnostics(cx);
1120 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1121 let buffer = self.buffer.read(cx).snapshot(cx);
1122 let selection = Selection {
1123 id: selection.id,
1124 start: selection.start.to_point(&buffer),
1125 end: selection.end.to_point(&buffer),
1126 reversed: selection.reversed,
1127 goal: selection.goal,
1128 };
1129 if self.local_selections::<Point>(cx).is_empty() {
1130 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1131 }
1132 } else {
1133 let buffer = self.buffer.read(cx).snapshot(cx);
1134 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1135 if self.selection_count() == 1 {
1136 if oldest_selection.is_empty() {
1137 cx.propagate_action();
1138 return;
1139 }
1140
1141 oldest_selection.start = oldest_selection.head().clone();
1142 oldest_selection.end = oldest_selection.head().clone();
1143 }
1144 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1145 }
1146 }
1147
1148 #[cfg(any(test, feature = "test-support"))]
1149 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1150 &self,
1151 cx: &mut MutableAppContext,
1152 ) -> Vec<Range<D>> {
1153 self.local_selections::<D>(cx)
1154 .iter()
1155 .map(|s| {
1156 if s.reversed {
1157 s.end.clone()..s.start.clone()
1158 } else {
1159 s.start.clone()..s.end.clone()
1160 }
1161 })
1162 .collect()
1163 }
1164
1165 #[cfg(any(test, feature = "test-support"))]
1166 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1167 let display_map = self
1168 .display_map
1169 .update(cx, |display_map, cx| display_map.snapshot(cx));
1170 self.selections
1171 .iter()
1172 .chain(
1173 self.pending_selection
1174 .as_ref()
1175 .map(|pending| &pending.selection),
1176 )
1177 .map(|s| {
1178 if s.reversed {
1179 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1180 } else {
1181 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1182 }
1183 })
1184 .collect()
1185 }
1186
1187 pub fn select_ranges<I, T>(
1188 &mut self,
1189 ranges: I,
1190 autoscroll: Option<Autoscroll>,
1191 cx: &mut ViewContext<Self>,
1192 ) where
1193 I: IntoIterator<Item = Range<T>>,
1194 T: ToOffset,
1195 {
1196 let buffer = self.buffer.read(cx).snapshot(cx);
1197 let selections = ranges
1198 .into_iter()
1199 .map(|range| {
1200 let mut start = range.start.to_offset(&buffer);
1201 let mut end = range.end.to_offset(&buffer);
1202 let reversed = if start > end {
1203 mem::swap(&mut start, &mut end);
1204 true
1205 } else {
1206 false
1207 };
1208 Selection {
1209 id: post_inc(&mut self.next_selection_id),
1210 start,
1211 end,
1212 reversed,
1213 goal: SelectionGoal::None,
1214 }
1215 })
1216 .collect::<Vec<_>>();
1217 self.update_selections(selections, autoscroll, cx);
1218 }
1219
1220 #[cfg(any(test, feature = "test-support"))]
1221 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1222 where
1223 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1224 {
1225 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1226 let selections = ranges
1227 .into_iter()
1228 .map(|range| {
1229 let mut start = range.start;
1230 let mut end = range.end;
1231 let reversed = if start > end {
1232 mem::swap(&mut start, &mut end);
1233 true
1234 } else {
1235 false
1236 };
1237 Selection {
1238 id: post_inc(&mut self.next_selection_id),
1239 start: start.to_point(&display_map),
1240 end: end.to_point(&display_map),
1241 reversed,
1242 goal: SelectionGoal::None,
1243 }
1244 })
1245 .collect();
1246 self.update_selections(selections, None, cx);
1247 }
1248
1249 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1250 let text = action.0.as_ref();
1251 if !self.skip_autoclose_end(text, cx) {
1252 self.start_transaction(cx);
1253 self.insert(text, cx);
1254 self.autoclose_pairs(cx);
1255 self.end_transaction(cx);
1256 self.trigger_completion_on_input(text, cx);
1257 }
1258 }
1259
1260 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1261 self.start_transaction(cx);
1262 let mut old_selections = SmallVec::<[_; 32]>::new();
1263 {
1264 let selections = self.local_selections::<Point>(cx);
1265 let buffer = self.buffer.read(cx).snapshot(cx);
1266 for selection in selections.iter() {
1267 let start_point = selection.start;
1268 let indent = buffer
1269 .indent_column_for_line(start_point.row)
1270 .min(start_point.column);
1271 let start = selection.start.to_offset(&buffer);
1272 let end = selection.end.to_offset(&buffer);
1273
1274 let mut insert_extra_newline = false;
1275 if let Some(language) = buffer.language() {
1276 let leading_whitespace_len = buffer
1277 .reversed_chars_at(start)
1278 .take_while(|c| c.is_whitespace() && *c != '\n')
1279 .map(|c| c.len_utf8())
1280 .sum::<usize>();
1281
1282 let trailing_whitespace_len = buffer
1283 .chars_at(end)
1284 .take_while(|c| c.is_whitespace() && *c != '\n')
1285 .map(|c| c.len_utf8())
1286 .sum::<usize>();
1287
1288 insert_extra_newline = language.brackets().iter().any(|pair| {
1289 let pair_start = pair.start.trim_end();
1290 let pair_end = pair.end.trim_start();
1291
1292 pair.newline
1293 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1294 && buffer.contains_str_at(
1295 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1296 pair_start,
1297 )
1298 });
1299 }
1300
1301 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1302 }
1303 }
1304
1305 self.buffer.update(cx, |buffer, cx| {
1306 let mut delta = 0_isize;
1307 let mut pending_edit: Option<PendingEdit> = None;
1308 for (_, range, indent, insert_extra_newline) in &old_selections {
1309 if pending_edit.as_ref().map_or(false, |pending| {
1310 pending.indent != *indent
1311 || pending.insert_extra_newline != *insert_extra_newline
1312 }) {
1313 let pending = pending_edit.take().unwrap();
1314 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1315 new_text.push('\n');
1316 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1317 if pending.insert_extra_newline {
1318 new_text = new_text.repeat(2);
1319 }
1320 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1321 delta += pending.delta;
1322 }
1323
1324 let start = (range.start as isize + delta) as usize;
1325 let end = (range.end as isize + delta) as usize;
1326 let mut text_len = *indent as usize + 1;
1327 if *insert_extra_newline {
1328 text_len *= 2;
1329 }
1330
1331 let pending = pending_edit.get_or_insert_with(Default::default);
1332 pending.delta += text_len as isize - (end - start) as isize;
1333 pending.indent = *indent;
1334 pending.insert_extra_newline = *insert_extra_newline;
1335 pending.ranges.push(start..end);
1336 }
1337
1338 let pending = pending_edit.unwrap();
1339 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1340 new_text.push('\n');
1341 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1342 if pending.insert_extra_newline {
1343 new_text = new_text.repeat(2);
1344 }
1345 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1346
1347 let buffer = buffer.read(cx);
1348 self.selections = self
1349 .selections
1350 .iter()
1351 .cloned()
1352 .zip(old_selections)
1353 .map(|(mut new_selection, (_, _, _, insert_extra_newline))| {
1354 if insert_extra_newline {
1355 let mut cursor = new_selection.start.to_point(&buffer);
1356 cursor.row -= 1;
1357 cursor.column = buffer.line_len(cursor.row);
1358 let anchor = buffer.anchor_after(cursor);
1359 new_selection.start = anchor.clone();
1360 new_selection.end = anchor;
1361 }
1362 new_selection
1363 })
1364 .collect();
1365 });
1366
1367 self.request_autoscroll(Autoscroll::Fit, cx);
1368 self.end_transaction(cx);
1369
1370 #[derive(Default)]
1371 struct PendingEdit {
1372 indent: u32,
1373 insert_extra_newline: bool,
1374 delta: isize,
1375 ranges: SmallVec<[Range<usize>; 32]>,
1376 }
1377 }
1378
1379 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1380 self.start_transaction(cx);
1381 let old_selections = self.local_selections::<usize>(cx);
1382 self.buffer.update(cx, |buffer, cx| {
1383 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1384 buffer.edit_with_autoindent(edit_ranges, text, cx);
1385 });
1386
1387 let selections = self.local_selections::<usize>(cx);
1388 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1389 self.end_transaction(cx);
1390 }
1391
1392 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1393 if self.completion_state.is_none() {
1394 if let Some(selection) = self.newest_anchor_selection() {
1395 if self
1396 .buffer
1397 .read(cx)
1398 .is_completion_trigger(selection.head(), text, cx)
1399 {
1400 self.show_completions(&ShowCompletions, cx);
1401 }
1402 }
1403 }
1404 }
1405
1406 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1407 let selections = self.local_selections::<usize>(cx);
1408 let mut bracket_pair_state = None;
1409 let mut new_selections = None;
1410 self.buffer.update(cx, |buffer, cx| {
1411 let mut snapshot = buffer.snapshot(cx);
1412 let left_biased_selections = selections
1413 .iter()
1414 .map(|selection| Selection {
1415 id: selection.id,
1416 start: snapshot.anchor_before(selection.start),
1417 end: snapshot.anchor_before(selection.end),
1418 reversed: selection.reversed,
1419 goal: selection.goal,
1420 })
1421 .collect::<Vec<_>>();
1422
1423 let autoclose_pair = snapshot.language().and_then(|language| {
1424 let first_selection_start = selections.first().unwrap().start;
1425 let pair = language.brackets().iter().find(|pair| {
1426 snapshot.contains_str_at(
1427 first_selection_start.saturating_sub(pair.start.len()),
1428 &pair.start,
1429 )
1430 });
1431 pair.and_then(|pair| {
1432 let should_autoclose = selections[1..].iter().all(|selection| {
1433 snapshot.contains_str_at(
1434 selection.start.saturating_sub(pair.start.len()),
1435 &pair.start,
1436 )
1437 });
1438
1439 if should_autoclose {
1440 Some(pair.clone())
1441 } else {
1442 None
1443 }
1444 })
1445 });
1446
1447 if let Some(pair) = autoclose_pair {
1448 let selection_ranges = selections
1449 .iter()
1450 .map(|selection| {
1451 let start = selection.start.to_offset(&snapshot);
1452 start..start
1453 })
1454 .collect::<SmallVec<[_; 32]>>();
1455
1456 buffer.edit(selection_ranges, &pair.end, cx);
1457 snapshot = buffer.snapshot(cx);
1458
1459 new_selections = Some(
1460 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1461 .collect::<Vec<_>>(),
1462 );
1463
1464 if pair.end.len() == 1 {
1465 let mut delta = 0;
1466 bracket_pair_state = Some(BracketPairState {
1467 ranges: selections
1468 .iter()
1469 .map(move |selection| {
1470 let offset = selection.start + delta;
1471 delta += 1;
1472 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1473 })
1474 .collect(),
1475 pair,
1476 });
1477 }
1478 }
1479 });
1480
1481 if let Some(new_selections) = new_selections {
1482 self.update_selections(new_selections, None, cx);
1483 }
1484 if let Some(bracket_pair_state) = bracket_pair_state {
1485 self.autoclose_stack.push(bracket_pair_state);
1486 }
1487 }
1488
1489 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1490 let old_selections = self.local_selections::<usize>(cx);
1491 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1492 autoclose_pair
1493 } else {
1494 return false;
1495 };
1496 if text != autoclose_pair.pair.end {
1497 return false;
1498 }
1499
1500 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1501
1502 let buffer = self.buffer.read(cx).snapshot(cx);
1503 if old_selections
1504 .iter()
1505 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1506 .all(|(selection, autoclose_range)| {
1507 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1508 selection.is_empty() && selection.start == autoclose_range_end
1509 })
1510 {
1511 let new_selections = old_selections
1512 .into_iter()
1513 .map(|selection| {
1514 let cursor = selection.start + 1;
1515 Selection {
1516 id: selection.id,
1517 start: cursor,
1518 end: cursor,
1519 reversed: false,
1520 goal: SelectionGoal::None,
1521 }
1522 })
1523 .collect();
1524 self.autoclose_stack.pop();
1525 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1526 true
1527 } else {
1528 false
1529 }
1530 }
1531
1532 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1533 let position = self
1534 .newest_selection::<usize>(&self.buffer.read(cx).read(cx))
1535 .head();
1536
1537 let completions = self
1538 .buffer
1539 .update(cx, |buffer, cx| buffer.completions(position, cx));
1540
1541 cx.spawn_weak(|this, mut cx| async move {
1542 let completions = completions.await?;
1543 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1544 this.update(&mut cx, |this, cx| {
1545 this.completion_state = Some(CompletionState {
1546 completions: completions.into(),
1547 selected_item: 0,
1548 list: Default::default(),
1549 });
1550 cx.notify();
1551 });
1552 }
1553
1554 Ok::<_, anyhow::Error>(())
1555 })
1556 .detach_and_log_err(cx);
1557 }
1558
1559 fn confirm_completion(&mut self, _: &ConfirmCompletion, cx: &mut ViewContext<Self>) {
1560 if let Some(completion_state) = self.completion_state.take() {
1561 if let Some(completion) = completion_state
1562 .completions
1563 .get(completion_state.selected_item)
1564 {
1565 self.buffer.update(cx, |buffer, cx| {
1566 buffer.edit_with_autoindent(
1567 [completion.old_range.clone()],
1568 completion.new_text.clone(),
1569 cx,
1570 );
1571 })
1572 }
1573 }
1574 }
1575
1576 pub fn has_completions(&self) -> bool {
1577 self.completion_state.is_some()
1578 }
1579
1580 pub fn render_completions(&self, cx: &AppContext) -> Option<ElementBox> {
1581 self.completion_state.as_ref().map(|state| {
1582 let build_settings = self.build_settings.clone();
1583 let settings = build_settings(cx);
1584 let completions = state.completions.clone();
1585 let selected_item = state.selected_item;
1586 UniformList::new(
1587 state.list.clone(),
1588 state.completions.len(),
1589 move |range, items, cx| {
1590 let settings = build_settings(cx);
1591 let start_ix = range.start;
1592 for (ix, completion) in completions[range].iter().enumerate() {
1593 let item_style = if start_ix + ix == selected_item {
1594 settings.style.autocomplete.selected_item
1595 } else {
1596 settings.style.autocomplete.item
1597 };
1598 items.push(
1599 Label::new(completion.label().to_string(), settings.style.text.clone())
1600 .contained()
1601 .with_style(item_style)
1602 .boxed(),
1603 );
1604 }
1605 },
1606 )
1607 .with_width_from_item(
1608 state
1609 .completions
1610 .iter()
1611 .enumerate()
1612 .max_by_key(|(_, completion)| completion.label().chars().count())
1613 .map(|(ix, _)| ix),
1614 )
1615 .contained()
1616 .with_style(settings.style.autocomplete.container)
1617 .boxed()
1618 })
1619 }
1620
1621 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1622 self.start_transaction(cx);
1623 self.select_all(&SelectAll, cx);
1624 self.insert("", cx);
1625 self.end_transaction(cx);
1626 }
1627
1628 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1629 self.start_transaction(cx);
1630 let mut selections = self.local_selections::<Point>(cx);
1631 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1632 for selection in &mut selections {
1633 if selection.is_empty() {
1634 let head = selection.head().to_display_point(&display_map);
1635 let cursor = movement::left(&display_map, head)
1636 .unwrap()
1637 .to_point(&display_map);
1638 selection.set_head(cursor);
1639 selection.goal = SelectionGoal::None;
1640 }
1641 }
1642 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1643 self.insert("", cx);
1644 self.end_transaction(cx);
1645 }
1646
1647 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1648 self.start_transaction(cx);
1649 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1650 let mut selections = self.local_selections::<Point>(cx);
1651 for selection in &mut selections {
1652 if selection.is_empty() {
1653 let head = selection.head().to_display_point(&display_map);
1654 let cursor = movement::right(&display_map, head)
1655 .unwrap()
1656 .to_point(&display_map);
1657 selection.set_head(cursor);
1658 selection.goal = SelectionGoal::None;
1659 }
1660 }
1661 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1662 self.insert(&"", cx);
1663 self.end_transaction(cx);
1664 }
1665
1666 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1667 self.start_transaction(cx);
1668 let tab_size = (self.build_settings)(cx).tab_size;
1669 let mut selections = self.local_selections::<Point>(cx);
1670 let mut last_indent = None;
1671 self.buffer.update(cx, |buffer, cx| {
1672 for selection in &mut selections {
1673 if selection.is_empty() {
1674 let char_column = buffer
1675 .read(cx)
1676 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1677 .flat_map(str::chars)
1678 .count();
1679 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1680 buffer.edit(
1681 [selection.start..selection.start],
1682 " ".repeat(chars_to_next_tab_stop),
1683 cx,
1684 );
1685 selection.start.column += chars_to_next_tab_stop as u32;
1686 selection.end = selection.start;
1687 } else {
1688 let mut start_row = selection.start.row;
1689 let mut end_row = selection.end.row + 1;
1690
1691 // If a selection ends at the beginning of a line, don't indent
1692 // that last line.
1693 if selection.end.column == 0 {
1694 end_row -= 1;
1695 }
1696
1697 // Avoid re-indenting a row that has already been indented by a
1698 // previous selection, but still update this selection's column
1699 // to reflect that indentation.
1700 if let Some((last_indent_row, last_indent_len)) = last_indent {
1701 if last_indent_row == selection.start.row {
1702 selection.start.column += last_indent_len;
1703 start_row += 1;
1704 }
1705 if last_indent_row == selection.end.row {
1706 selection.end.column += last_indent_len;
1707 }
1708 }
1709
1710 for row in start_row..end_row {
1711 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1712 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1713 let row_start = Point::new(row, 0);
1714 buffer.edit(
1715 [row_start..row_start],
1716 " ".repeat(columns_to_next_tab_stop),
1717 cx,
1718 );
1719
1720 // Update this selection's endpoints to reflect the indentation.
1721 if row == selection.start.row {
1722 selection.start.column += columns_to_next_tab_stop as u32;
1723 }
1724 if row == selection.end.row {
1725 selection.end.column += columns_to_next_tab_stop as u32;
1726 }
1727
1728 last_indent = Some((row, columns_to_next_tab_stop as u32));
1729 }
1730 }
1731 }
1732 });
1733
1734 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1735 self.end_transaction(cx);
1736 }
1737
1738 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1739 self.start_transaction(cx);
1740 let tab_size = (self.build_settings)(cx).tab_size;
1741 let selections = self.local_selections::<Point>(cx);
1742 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1743 let mut deletion_ranges = Vec::new();
1744 let mut last_outdent = None;
1745 {
1746 let buffer = self.buffer.read(cx).read(cx);
1747 for selection in &selections {
1748 let mut rows = selection.spanned_rows(false, &display_map);
1749
1750 // Avoid re-outdenting a row that has already been outdented by a
1751 // previous selection.
1752 if let Some(last_row) = last_outdent {
1753 if last_row == rows.start {
1754 rows.start += 1;
1755 }
1756 }
1757
1758 for row in rows {
1759 let column = buffer.indent_column_for_line(row) as usize;
1760 if column > 0 {
1761 let mut deletion_len = (column % tab_size) as u32;
1762 if deletion_len == 0 {
1763 deletion_len = tab_size as u32;
1764 }
1765 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1766 last_outdent = Some(row);
1767 }
1768 }
1769 }
1770 }
1771 self.buffer.update(cx, |buffer, cx| {
1772 buffer.edit(deletion_ranges, "", cx);
1773 });
1774
1775 self.update_selections(
1776 self.local_selections::<usize>(cx),
1777 Some(Autoscroll::Fit),
1778 cx,
1779 );
1780 self.end_transaction(cx);
1781 }
1782
1783 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1784 self.start_transaction(cx);
1785
1786 let selections = self.local_selections::<Point>(cx);
1787 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1788 let buffer = self.buffer.read(cx).snapshot(cx);
1789
1790 let mut new_cursors = Vec::new();
1791 let mut edit_ranges = Vec::new();
1792 let mut selections = selections.iter().peekable();
1793 while let Some(selection) = selections.next() {
1794 let mut rows = selection.spanned_rows(false, &display_map);
1795 let goal_display_column = selection.head().to_display_point(&display_map).column();
1796
1797 // Accumulate contiguous regions of rows that we want to delete.
1798 while let Some(next_selection) = selections.peek() {
1799 let next_rows = next_selection.spanned_rows(false, &display_map);
1800 if next_rows.start <= rows.end {
1801 rows.end = next_rows.end;
1802 selections.next().unwrap();
1803 } else {
1804 break;
1805 }
1806 }
1807
1808 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1809 let edit_end;
1810 let cursor_buffer_row;
1811 if buffer.max_point().row >= rows.end {
1812 // If there's a line after the range, delete the \n from the end of the row range
1813 // and position the cursor on the next line.
1814 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1815 cursor_buffer_row = rows.end;
1816 } else {
1817 // If there isn't a line after the range, delete the \n from the line before the
1818 // start of the row range and position the cursor there.
1819 edit_start = edit_start.saturating_sub(1);
1820 edit_end = buffer.len();
1821 cursor_buffer_row = rows.start.saturating_sub(1);
1822 }
1823
1824 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1825 *cursor.column_mut() =
1826 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1827
1828 new_cursors.push((
1829 selection.id,
1830 buffer.anchor_after(cursor.to_point(&display_map)),
1831 ));
1832 edit_ranges.push(edit_start..edit_end);
1833 }
1834
1835 let buffer = self.buffer.update(cx, |buffer, cx| {
1836 buffer.edit(edit_ranges, "", cx);
1837 buffer.snapshot(cx)
1838 });
1839 let new_selections = new_cursors
1840 .into_iter()
1841 .map(|(id, cursor)| {
1842 let cursor = cursor.to_point(&buffer);
1843 Selection {
1844 id,
1845 start: cursor,
1846 end: cursor,
1847 reversed: false,
1848 goal: SelectionGoal::None,
1849 }
1850 })
1851 .collect();
1852 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1853 self.end_transaction(cx);
1854 }
1855
1856 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1857 self.start_transaction(cx);
1858
1859 let selections = self.local_selections::<Point>(cx);
1860 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1861 let buffer = &display_map.buffer_snapshot;
1862
1863 let mut edits = Vec::new();
1864 let mut selections_iter = selections.iter().peekable();
1865 while let Some(selection) = selections_iter.next() {
1866 // Avoid duplicating the same lines twice.
1867 let mut rows = selection.spanned_rows(false, &display_map);
1868
1869 while let Some(next_selection) = selections_iter.peek() {
1870 let next_rows = next_selection.spanned_rows(false, &display_map);
1871 if next_rows.start <= rows.end - 1 {
1872 rows.end = next_rows.end;
1873 selections_iter.next().unwrap();
1874 } else {
1875 break;
1876 }
1877 }
1878
1879 // Copy the text from the selected row region and splice it at the start of the region.
1880 let start = Point::new(rows.start, 0);
1881 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1882 let text = buffer
1883 .text_for_range(start..end)
1884 .chain(Some("\n"))
1885 .collect::<String>();
1886 edits.push((start, text, rows.len() as u32));
1887 }
1888
1889 self.buffer.update(cx, |buffer, cx| {
1890 for (point, text, _) in edits.into_iter().rev() {
1891 buffer.edit(Some(point..point), text, cx);
1892 }
1893 });
1894
1895 self.request_autoscroll(Autoscroll::Fit, cx);
1896 self.end_transaction(cx);
1897 }
1898
1899 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1900 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1901 let buffer = self.buffer.read(cx).snapshot(cx);
1902
1903 let mut edits = Vec::new();
1904 let mut unfold_ranges = Vec::new();
1905 let mut refold_ranges = Vec::new();
1906
1907 let selections = self.local_selections::<Point>(cx);
1908 let mut selections = selections.iter().peekable();
1909 let mut contiguous_row_selections = Vec::new();
1910 let mut new_selections = Vec::new();
1911
1912 while let Some(selection) = selections.next() {
1913 // Find all the selections that span a contiguous row range
1914 contiguous_row_selections.push(selection.clone());
1915 let start_row = selection.start.row;
1916 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1917 display_map.next_line_boundary(selection.end).0.row + 1
1918 } else {
1919 selection.end.row
1920 };
1921
1922 while let Some(next_selection) = selections.peek() {
1923 if next_selection.start.row <= end_row {
1924 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1925 display_map.next_line_boundary(next_selection.end).0.row + 1
1926 } else {
1927 next_selection.end.row
1928 };
1929 contiguous_row_selections.push(selections.next().unwrap().clone());
1930 } else {
1931 break;
1932 }
1933 }
1934
1935 // Move the text spanned by the row range to be before the line preceding the row range
1936 if start_row > 0 {
1937 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1938 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1939 let insertion_point = display_map
1940 .prev_line_boundary(Point::new(start_row - 1, 0))
1941 .0;
1942
1943 // Don't move lines across excerpts
1944 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1945 let text = buffer
1946 .text_for_range(range_to_move.clone())
1947 .flat_map(|s| s.chars())
1948 .skip(1)
1949 .chain(['\n'])
1950 .collect::<String>();
1951
1952 edits.push((
1953 buffer.anchor_after(range_to_move.start)
1954 ..buffer.anchor_before(range_to_move.end),
1955 String::new(),
1956 ));
1957 let insertion_anchor = buffer.anchor_after(insertion_point);
1958 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1959
1960 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1961
1962 // Move selections up
1963 new_selections.extend(contiguous_row_selections.drain(..).map(
1964 |mut selection| {
1965 selection.start.row -= row_delta;
1966 selection.end.row -= row_delta;
1967 selection
1968 },
1969 ));
1970
1971 // Move folds up
1972 unfold_ranges.push(range_to_move.clone());
1973 for fold in display_map.folds_in_range(
1974 buffer.anchor_before(range_to_move.start)
1975 ..buffer.anchor_after(range_to_move.end),
1976 ) {
1977 let mut start = fold.start.to_point(&buffer);
1978 let mut end = fold.end.to_point(&buffer);
1979 start.row -= row_delta;
1980 end.row -= row_delta;
1981 refold_ranges.push(start..end);
1982 }
1983 }
1984 }
1985
1986 // If we didn't move line(s), preserve the existing selections
1987 new_selections.extend(contiguous_row_selections.drain(..));
1988 }
1989
1990 self.start_transaction(cx);
1991 self.unfold_ranges(unfold_ranges, cx);
1992 self.buffer.update(cx, |buffer, cx| {
1993 for (range, text) in edits {
1994 buffer.edit([range], text, cx);
1995 }
1996 });
1997 self.fold_ranges(refold_ranges, cx);
1998 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1999 self.end_transaction(cx);
2000 }
2001
2002 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2003 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2004 let buffer = self.buffer.read(cx).snapshot(cx);
2005
2006 let mut edits = Vec::new();
2007 let mut unfold_ranges = Vec::new();
2008 let mut refold_ranges = Vec::new();
2009
2010 let selections = self.local_selections::<Point>(cx);
2011 let mut selections = selections.iter().peekable();
2012 let mut contiguous_row_selections = Vec::new();
2013 let mut new_selections = Vec::new();
2014
2015 while let Some(selection) = selections.next() {
2016 // Find all the selections that span a contiguous row range
2017 contiguous_row_selections.push(selection.clone());
2018 let start_row = selection.start.row;
2019 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2020 display_map.next_line_boundary(selection.end).0.row + 1
2021 } else {
2022 selection.end.row
2023 };
2024
2025 while let Some(next_selection) = selections.peek() {
2026 if next_selection.start.row <= end_row {
2027 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2028 display_map.next_line_boundary(next_selection.end).0.row + 1
2029 } else {
2030 next_selection.end.row
2031 };
2032 contiguous_row_selections.push(selections.next().unwrap().clone());
2033 } else {
2034 break;
2035 }
2036 }
2037
2038 // Move the text spanned by the row range to be after the last line of the row range
2039 if end_row <= buffer.max_point().row {
2040 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2041 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2042
2043 // Don't move lines across excerpt boundaries
2044 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2045 let mut text = String::from("\n");
2046 text.extend(buffer.text_for_range(range_to_move.clone()));
2047 text.pop(); // Drop trailing newline
2048 edits.push((
2049 buffer.anchor_after(range_to_move.start)
2050 ..buffer.anchor_before(range_to_move.end),
2051 String::new(),
2052 ));
2053 let insertion_anchor = buffer.anchor_after(insertion_point);
2054 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2055
2056 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2057
2058 // Move selections down
2059 new_selections.extend(contiguous_row_selections.drain(..).map(
2060 |mut selection| {
2061 selection.start.row += row_delta;
2062 selection.end.row += row_delta;
2063 selection
2064 },
2065 ));
2066
2067 // Move folds down
2068 unfold_ranges.push(range_to_move.clone());
2069 for fold in display_map.folds_in_range(
2070 buffer.anchor_before(range_to_move.start)
2071 ..buffer.anchor_after(range_to_move.end),
2072 ) {
2073 let mut start = fold.start.to_point(&buffer);
2074 let mut end = fold.end.to_point(&buffer);
2075 start.row += row_delta;
2076 end.row += row_delta;
2077 refold_ranges.push(start..end);
2078 }
2079 }
2080 }
2081
2082 // If we didn't move line(s), preserve the existing selections
2083 new_selections.extend(contiguous_row_selections.drain(..));
2084 }
2085
2086 self.start_transaction(cx);
2087 self.unfold_ranges(unfold_ranges, cx);
2088 self.buffer.update(cx, |buffer, cx| {
2089 for (range, text) in edits {
2090 buffer.edit([range], text, cx);
2091 }
2092 });
2093 self.fold_ranges(refold_ranges, cx);
2094 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2095 self.end_transaction(cx);
2096 }
2097
2098 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2099 self.start_transaction(cx);
2100 let mut text = String::new();
2101 let mut selections = self.local_selections::<Point>(cx);
2102 let mut clipboard_selections = Vec::with_capacity(selections.len());
2103 {
2104 let buffer = self.buffer.read(cx).read(cx);
2105 let max_point = buffer.max_point();
2106 for selection in &mut selections {
2107 let is_entire_line = selection.is_empty();
2108 if is_entire_line {
2109 selection.start = Point::new(selection.start.row, 0);
2110 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2111 }
2112 let mut len = 0;
2113 for chunk in buffer.text_for_range(selection.start..selection.end) {
2114 text.push_str(chunk);
2115 len += chunk.len();
2116 }
2117 clipboard_selections.push(ClipboardSelection {
2118 len,
2119 is_entire_line,
2120 });
2121 }
2122 }
2123 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2124 self.insert("", cx);
2125 self.end_transaction(cx);
2126
2127 cx.as_mut()
2128 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2129 }
2130
2131 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2132 let selections = self.local_selections::<Point>(cx);
2133 let mut text = String::new();
2134 let mut clipboard_selections = Vec::with_capacity(selections.len());
2135 {
2136 let buffer = self.buffer.read(cx).read(cx);
2137 let max_point = buffer.max_point();
2138 for selection in selections.iter() {
2139 let mut start = selection.start;
2140 let mut end = selection.end;
2141 let is_entire_line = selection.is_empty();
2142 if is_entire_line {
2143 start = Point::new(start.row, 0);
2144 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2145 }
2146 let mut len = 0;
2147 for chunk in buffer.text_for_range(start..end) {
2148 text.push_str(chunk);
2149 len += chunk.len();
2150 }
2151 clipboard_selections.push(ClipboardSelection {
2152 len,
2153 is_entire_line,
2154 });
2155 }
2156 }
2157
2158 cx.as_mut()
2159 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2160 }
2161
2162 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2163 if let Some(item) = cx.as_mut().read_from_clipboard() {
2164 let clipboard_text = item.text();
2165 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2166 let mut selections = self.local_selections::<usize>(cx);
2167 let all_selections_were_entire_line =
2168 clipboard_selections.iter().all(|s| s.is_entire_line);
2169 if clipboard_selections.len() != selections.len() {
2170 clipboard_selections.clear();
2171 }
2172
2173 let mut delta = 0_isize;
2174 let mut start_offset = 0;
2175 for (i, selection) in selections.iter_mut().enumerate() {
2176 let to_insert;
2177 let entire_line;
2178 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2179 let end_offset = start_offset + clipboard_selection.len;
2180 to_insert = &clipboard_text[start_offset..end_offset];
2181 entire_line = clipboard_selection.is_entire_line;
2182 start_offset = end_offset
2183 } else {
2184 to_insert = clipboard_text.as_str();
2185 entire_line = all_selections_were_entire_line;
2186 }
2187
2188 selection.start = (selection.start as isize + delta) as usize;
2189 selection.end = (selection.end as isize + delta) as usize;
2190
2191 self.buffer.update(cx, |buffer, cx| {
2192 // If the corresponding selection was empty when this slice of the
2193 // clipboard text was written, then the entire line containing the
2194 // selection was copied. If this selection is also currently empty,
2195 // then paste the line before the current line of the buffer.
2196 let range = if selection.is_empty() && entire_line {
2197 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2198 let line_start = selection.start - column;
2199 line_start..line_start
2200 } else {
2201 selection.start..selection.end
2202 };
2203
2204 delta += to_insert.len() as isize - range.len() as isize;
2205 buffer.edit([range], to_insert, cx);
2206 selection.start += to_insert.len();
2207 selection.end = selection.start;
2208 });
2209 }
2210 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2211 } else {
2212 self.insert(clipboard_text, cx);
2213 }
2214 }
2215 }
2216
2217 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2218 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2219 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2220 self.set_selections(selections, cx);
2221 }
2222 self.request_autoscroll(Autoscroll::Fit, cx);
2223 }
2224 }
2225
2226 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2227 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2228 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2229 self.set_selections(selections, cx);
2230 }
2231 self.request_autoscroll(Autoscroll::Fit, cx);
2232 }
2233 }
2234
2235 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2236 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2237 let mut selections = self.local_selections::<Point>(cx);
2238 for selection in &mut selections {
2239 let start = selection.start.to_display_point(&display_map);
2240 let end = selection.end.to_display_point(&display_map);
2241
2242 if start != end {
2243 selection.end = selection.start.clone();
2244 } else {
2245 let cursor = movement::left(&display_map, start)
2246 .unwrap()
2247 .to_point(&display_map);
2248 selection.start = cursor.clone();
2249 selection.end = cursor;
2250 }
2251 selection.reversed = false;
2252 selection.goal = SelectionGoal::None;
2253 }
2254 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2255 }
2256
2257 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2258 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2259 let mut selections = self.local_selections::<Point>(cx);
2260 for selection in &mut selections {
2261 let head = selection.head().to_display_point(&display_map);
2262 let cursor = movement::left(&display_map, head)
2263 .unwrap()
2264 .to_point(&display_map);
2265 selection.set_head(cursor);
2266 selection.goal = SelectionGoal::None;
2267 }
2268 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2269 }
2270
2271 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2272 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2273 let mut selections = self.local_selections::<Point>(cx);
2274 for selection in &mut selections {
2275 let start = selection.start.to_display_point(&display_map);
2276 let end = selection.end.to_display_point(&display_map);
2277
2278 if start != end {
2279 selection.start = selection.end.clone();
2280 } else {
2281 let cursor = movement::right(&display_map, end)
2282 .unwrap()
2283 .to_point(&display_map);
2284 selection.start = cursor;
2285 selection.end = cursor;
2286 }
2287 selection.reversed = false;
2288 selection.goal = SelectionGoal::None;
2289 }
2290 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2291 }
2292
2293 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2294 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2295 let mut selections = self.local_selections::<Point>(cx);
2296 for selection in &mut selections {
2297 let head = selection.head().to_display_point(&display_map);
2298 let cursor = movement::right(&display_map, head)
2299 .unwrap()
2300 .to_point(&display_map);
2301 selection.set_head(cursor);
2302 selection.goal = SelectionGoal::None;
2303 }
2304 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2305 }
2306
2307 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2308 if let Some(completion_state) = &mut self.completion_state {
2309 if completion_state.selected_item > 0 {
2310 completion_state.selected_item -= 1;
2311 completion_state
2312 .list
2313 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2314 }
2315 cx.notify();
2316 return;
2317 }
2318
2319 if matches!(self.mode, EditorMode::SingleLine) {
2320 cx.propagate_action();
2321 return;
2322 }
2323
2324 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2325 let mut selections = self.local_selections::<Point>(cx);
2326 for selection in &mut selections {
2327 let start = selection.start.to_display_point(&display_map);
2328 let end = selection.end.to_display_point(&display_map);
2329 if start != end {
2330 selection.goal = SelectionGoal::None;
2331 }
2332
2333 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2334 let cursor = start.to_point(&display_map);
2335 selection.start = cursor;
2336 selection.end = cursor;
2337 selection.goal = goal;
2338 selection.reversed = false;
2339 }
2340 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2341 }
2342
2343 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2344 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2345 let mut selections = self.local_selections::<Point>(cx);
2346 for selection in &mut selections {
2347 let head = selection.head().to_display_point(&display_map);
2348 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2349 let cursor = head.to_point(&display_map);
2350 selection.set_head(cursor);
2351 selection.goal = goal;
2352 }
2353 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2354 }
2355
2356 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2357 if let Some(completion_state) = &mut self.completion_state {
2358 if completion_state.selected_item + 1 < completion_state.completions.len() {
2359 completion_state.selected_item += 1;
2360 completion_state
2361 .list
2362 .scroll_to(ScrollTarget::Show(completion_state.selected_item));
2363 }
2364 cx.notify();
2365 return;
2366 }
2367
2368 if matches!(self.mode, EditorMode::SingleLine) {
2369 cx.propagate_action();
2370 return;
2371 }
2372
2373 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2374 let mut selections = self.local_selections::<Point>(cx);
2375 for selection in &mut selections {
2376 let start = selection.start.to_display_point(&display_map);
2377 let end = selection.end.to_display_point(&display_map);
2378 if start != end {
2379 selection.goal = SelectionGoal::None;
2380 }
2381
2382 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2383 let cursor = start.to_point(&display_map);
2384 selection.start = cursor;
2385 selection.end = cursor;
2386 selection.goal = goal;
2387 selection.reversed = false;
2388 }
2389 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2390 }
2391
2392 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2393 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2394 let mut selections = self.local_selections::<Point>(cx);
2395 for selection in &mut selections {
2396 let head = selection.head().to_display_point(&display_map);
2397 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2398 let cursor = head.to_point(&display_map);
2399 selection.set_head(cursor);
2400 selection.goal = goal;
2401 }
2402 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2403 }
2404
2405 pub fn move_to_previous_word_boundary(
2406 &mut self,
2407 _: &MoveToPreviousWordBoundary,
2408 cx: &mut ViewContext<Self>,
2409 ) {
2410 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2411 let mut selections = self.local_selections::<Point>(cx);
2412 for selection in &mut selections {
2413 let head = selection.head().to_display_point(&display_map);
2414 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2415 selection.start = cursor.clone();
2416 selection.end = cursor;
2417 selection.reversed = false;
2418 selection.goal = SelectionGoal::None;
2419 }
2420 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2421 }
2422
2423 pub fn select_to_previous_word_boundary(
2424 &mut self,
2425 _: &SelectToPreviousWordBoundary,
2426 cx: &mut ViewContext<Self>,
2427 ) {
2428 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2429 let mut selections = self.local_selections::<Point>(cx);
2430 for selection in &mut selections {
2431 let head = selection.head().to_display_point(&display_map);
2432 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2433 selection.set_head(cursor);
2434 selection.goal = SelectionGoal::None;
2435 }
2436 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2437 }
2438
2439 pub fn delete_to_previous_word_boundary(
2440 &mut self,
2441 _: &DeleteToPreviousWordBoundary,
2442 cx: &mut ViewContext<Self>,
2443 ) {
2444 self.start_transaction(cx);
2445 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2446 let mut selections = self.local_selections::<Point>(cx);
2447 for selection in &mut selections {
2448 if selection.is_empty() {
2449 let head = selection.head().to_display_point(&display_map);
2450 let cursor =
2451 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2452 selection.set_head(cursor);
2453 selection.goal = SelectionGoal::None;
2454 }
2455 }
2456 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2457 self.insert("", cx);
2458 self.end_transaction(cx);
2459 }
2460
2461 pub fn move_to_next_word_boundary(
2462 &mut self,
2463 _: &MoveToNextWordBoundary,
2464 cx: &mut ViewContext<Self>,
2465 ) {
2466 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2467 let mut selections = self.local_selections::<Point>(cx);
2468 for selection in &mut selections {
2469 let head = selection.head().to_display_point(&display_map);
2470 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2471 selection.start = cursor;
2472 selection.end = cursor;
2473 selection.reversed = false;
2474 selection.goal = SelectionGoal::None;
2475 }
2476 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2477 }
2478
2479 pub fn select_to_next_word_boundary(
2480 &mut self,
2481 _: &SelectToNextWordBoundary,
2482 cx: &mut ViewContext<Self>,
2483 ) {
2484 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2485 let mut selections = self.local_selections::<Point>(cx);
2486 for selection in &mut selections {
2487 let head = selection.head().to_display_point(&display_map);
2488 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2489 selection.set_head(cursor);
2490 selection.goal = SelectionGoal::None;
2491 }
2492 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2493 }
2494
2495 pub fn delete_to_next_word_boundary(
2496 &mut self,
2497 _: &DeleteToNextWordBoundary,
2498 cx: &mut ViewContext<Self>,
2499 ) {
2500 self.start_transaction(cx);
2501 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2502 let mut selections = self.local_selections::<Point>(cx);
2503 for selection in &mut selections {
2504 if selection.is_empty() {
2505 let head = selection.head().to_display_point(&display_map);
2506 let cursor =
2507 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2508 selection.set_head(cursor);
2509 selection.goal = SelectionGoal::None;
2510 }
2511 }
2512 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2513 self.insert("", cx);
2514 self.end_transaction(cx);
2515 }
2516
2517 pub fn move_to_beginning_of_line(
2518 &mut self,
2519 _: &MoveToBeginningOfLine,
2520 cx: &mut ViewContext<Self>,
2521 ) {
2522 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2523 let mut selections = self.local_selections::<Point>(cx);
2524 for selection in &mut selections {
2525 let head = selection.head().to_display_point(&display_map);
2526 let new_head = movement::line_beginning(&display_map, head, true);
2527 let cursor = new_head.to_point(&display_map);
2528 selection.start = cursor;
2529 selection.end = cursor;
2530 selection.reversed = false;
2531 selection.goal = SelectionGoal::None;
2532 }
2533 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2534 }
2535
2536 pub fn select_to_beginning_of_line(
2537 &mut self,
2538 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2539 cx: &mut ViewContext<Self>,
2540 ) {
2541 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2542 let mut selections = self.local_selections::<Point>(cx);
2543 for selection in &mut selections {
2544 let head = selection.head().to_display_point(&display_map);
2545 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2546 selection.set_head(new_head.to_point(&display_map));
2547 selection.goal = SelectionGoal::None;
2548 }
2549 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2550 }
2551
2552 pub fn delete_to_beginning_of_line(
2553 &mut self,
2554 _: &DeleteToBeginningOfLine,
2555 cx: &mut ViewContext<Self>,
2556 ) {
2557 self.start_transaction(cx);
2558 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2559 self.backspace(&Backspace, cx);
2560 self.end_transaction(cx);
2561 }
2562
2563 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2564 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2565 let mut selections = self.local_selections::<Point>(cx);
2566 {
2567 for selection in &mut selections {
2568 let head = selection.head().to_display_point(&display_map);
2569 let new_head = movement::line_end(&display_map, head);
2570 let anchor = new_head.to_point(&display_map);
2571 selection.start = anchor.clone();
2572 selection.end = anchor;
2573 selection.reversed = false;
2574 selection.goal = SelectionGoal::None;
2575 }
2576 }
2577 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2578 }
2579
2580 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2581 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2582 let mut selections = self.local_selections::<Point>(cx);
2583 for selection in &mut selections {
2584 let head = selection.head().to_display_point(&display_map);
2585 let new_head = movement::line_end(&display_map, head);
2586 selection.set_head(new_head.to_point(&display_map));
2587 selection.goal = SelectionGoal::None;
2588 }
2589 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2590 }
2591
2592 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2593 self.start_transaction(cx);
2594 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2595 self.delete(&Delete, cx);
2596 self.end_transaction(cx);
2597 }
2598
2599 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2600 self.start_transaction(cx);
2601 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2602 self.cut(&Cut, cx);
2603 self.end_transaction(cx);
2604 }
2605
2606 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2607 if matches!(self.mode, EditorMode::SingleLine) {
2608 cx.propagate_action();
2609 return;
2610 }
2611
2612 let selection = Selection {
2613 id: post_inc(&mut self.next_selection_id),
2614 start: 0,
2615 end: 0,
2616 reversed: false,
2617 goal: SelectionGoal::None,
2618 };
2619 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2620 }
2621
2622 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2623 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2624 selection.set_head(Point::zero());
2625 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2626 }
2627
2628 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2629 if matches!(self.mode, EditorMode::SingleLine) {
2630 cx.propagate_action();
2631 return;
2632 }
2633
2634 let cursor = self.buffer.read(cx).read(cx).len();
2635 let selection = Selection {
2636 id: post_inc(&mut self.next_selection_id),
2637 start: cursor,
2638 end: cursor,
2639 reversed: false,
2640 goal: SelectionGoal::None,
2641 };
2642 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2643 }
2644
2645 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
2646 self.nav_history = nav_history;
2647 }
2648
2649 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
2650 self.nav_history.as_ref()
2651 }
2652
2653 fn push_to_nav_history(
2654 &self,
2655 position: Anchor,
2656 new_position: Option<Point>,
2657 cx: &mut ViewContext<Self>,
2658 ) {
2659 if let Some(nav_history) = &self.nav_history {
2660 let buffer = self.buffer.read(cx).read(cx);
2661 let offset = position.to_offset(&buffer);
2662 let point = position.to_point(&buffer);
2663 drop(buffer);
2664
2665 if let Some(new_position) = new_position {
2666 let row_delta = (new_position.row as i64 - point.row as i64).abs();
2667 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
2668 return;
2669 }
2670 }
2671
2672 nav_history.push(Some(NavigationData {
2673 anchor: position,
2674 offset,
2675 }));
2676 }
2677 }
2678
2679 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2680 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2681 selection.set_head(self.buffer.read(cx).read(cx).len());
2682 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2683 }
2684
2685 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2686 let selection = Selection {
2687 id: post_inc(&mut self.next_selection_id),
2688 start: 0,
2689 end: self.buffer.read(cx).read(cx).len(),
2690 reversed: false,
2691 goal: SelectionGoal::None,
2692 };
2693 self.update_selections(vec![selection], None, cx);
2694 }
2695
2696 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2697 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2698 let mut selections = self.local_selections::<Point>(cx);
2699 let max_point = display_map.buffer_snapshot.max_point();
2700 for selection in &mut selections {
2701 let rows = selection.spanned_rows(true, &display_map);
2702 selection.start = Point::new(rows.start, 0);
2703 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2704 selection.reversed = false;
2705 }
2706 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2707 }
2708
2709 pub fn split_selection_into_lines(
2710 &mut self,
2711 _: &SplitSelectionIntoLines,
2712 cx: &mut ViewContext<Self>,
2713 ) {
2714 let mut to_unfold = Vec::new();
2715 let mut new_selections = Vec::new();
2716 {
2717 let selections = self.local_selections::<Point>(cx);
2718 let buffer = self.buffer.read(cx).read(cx);
2719 for selection in selections {
2720 for row in selection.start.row..selection.end.row {
2721 let cursor = Point::new(row, buffer.line_len(row));
2722 new_selections.push(Selection {
2723 id: post_inc(&mut self.next_selection_id),
2724 start: cursor,
2725 end: cursor,
2726 reversed: false,
2727 goal: SelectionGoal::None,
2728 });
2729 }
2730 new_selections.push(Selection {
2731 id: selection.id,
2732 start: selection.end,
2733 end: selection.end,
2734 reversed: false,
2735 goal: SelectionGoal::None,
2736 });
2737 to_unfold.push(selection.start..selection.end);
2738 }
2739 }
2740 self.unfold_ranges(to_unfold, cx);
2741 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2742 }
2743
2744 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2745 self.add_selection(true, cx);
2746 }
2747
2748 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2749 self.add_selection(false, cx);
2750 }
2751
2752 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2753 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2754 let mut selections = self.local_selections::<Point>(cx);
2755 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2756 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2757 let range = oldest_selection.display_range(&display_map).sorted();
2758 let columns = cmp::min(range.start.column(), range.end.column())
2759 ..cmp::max(range.start.column(), range.end.column());
2760
2761 selections.clear();
2762 let mut stack = Vec::new();
2763 for row in range.start.row()..=range.end.row() {
2764 if let Some(selection) = self.build_columnar_selection(
2765 &display_map,
2766 row,
2767 &columns,
2768 oldest_selection.reversed,
2769 ) {
2770 stack.push(selection.id);
2771 selections.push(selection);
2772 }
2773 }
2774
2775 if above {
2776 stack.reverse();
2777 }
2778
2779 AddSelectionsState { above, stack }
2780 });
2781
2782 let last_added_selection = *state.stack.last().unwrap();
2783 let mut new_selections = Vec::new();
2784 if above == state.above {
2785 let end_row = if above {
2786 0
2787 } else {
2788 display_map.max_point().row()
2789 };
2790
2791 'outer: for selection in selections {
2792 if selection.id == last_added_selection {
2793 let range = selection.display_range(&display_map).sorted();
2794 debug_assert_eq!(range.start.row(), range.end.row());
2795 let mut row = range.start.row();
2796 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2797 {
2798 start..end
2799 } else {
2800 cmp::min(range.start.column(), range.end.column())
2801 ..cmp::max(range.start.column(), range.end.column())
2802 };
2803
2804 while row != end_row {
2805 if above {
2806 row -= 1;
2807 } else {
2808 row += 1;
2809 }
2810
2811 if let Some(new_selection) = self.build_columnar_selection(
2812 &display_map,
2813 row,
2814 &columns,
2815 selection.reversed,
2816 ) {
2817 state.stack.push(new_selection.id);
2818 if above {
2819 new_selections.push(new_selection);
2820 new_selections.push(selection);
2821 } else {
2822 new_selections.push(selection);
2823 new_selections.push(new_selection);
2824 }
2825
2826 continue 'outer;
2827 }
2828 }
2829 }
2830
2831 new_selections.push(selection);
2832 }
2833 } else {
2834 new_selections = selections;
2835 new_selections.retain(|s| s.id != last_added_selection);
2836 state.stack.pop();
2837 }
2838
2839 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2840 if state.stack.len() > 1 {
2841 self.add_selections_state = Some(state);
2842 }
2843 }
2844
2845 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2846 let replace_newest = action.0;
2847 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2848 let buffer = &display_map.buffer_snapshot;
2849 let mut selections = self.local_selections::<usize>(cx);
2850 if let Some(mut select_next_state) = self.select_next_state.take() {
2851 let query = &select_next_state.query;
2852 if !select_next_state.done {
2853 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2854 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2855 let mut next_selected_range = None;
2856
2857 let bytes_after_last_selection =
2858 buffer.bytes_in_range(last_selection.end..buffer.len());
2859 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2860 let query_matches = query
2861 .stream_find_iter(bytes_after_last_selection)
2862 .map(|result| (last_selection.end, result))
2863 .chain(
2864 query
2865 .stream_find_iter(bytes_before_first_selection)
2866 .map(|result| (0, result)),
2867 );
2868 for (start_offset, query_match) in query_matches {
2869 let query_match = query_match.unwrap(); // can only fail due to I/O
2870 let offset_range =
2871 start_offset + query_match.start()..start_offset + query_match.end();
2872 let display_range = offset_range.start.to_display_point(&display_map)
2873 ..offset_range.end.to_display_point(&display_map);
2874
2875 if !select_next_state.wordwise
2876 || (!movement::is_inside_word(&display_map, display_range.start)
2877 && !movement::is_inside_word(&display_map, display_range.end))
2878 {
2879 next_selected_range = Some(offset_range);
2880 break;
2881 }
2882 }
2883
2884 if let Some(next_selected_range) = next_selected_range {
2885 if replace_newest {
2886 if let Some(newest_id) =
2887 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2888 {
2889 selections.retain(|s| s.id != newest_id);
2890 }
2891 }
2892 selections.push(Selection {
2893 id: post_inc(&mut self.next_selection_id),
2894 start: next_selected_range.start,
2895 end: next_selected_range.end,
2896 reversed: false,
2897 goal: SelectionGoal::None,
2898 });
2899 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2900 } else {
2901 select_next_state.done = true;
2902 }
2903 }
2904
2905 self.select_next_state = Some(select_next_state);
2906 } else if selections.len() == 1 {
2907 let selection = selections.last_mut().unwrap();
2908 if selection.start == selection.end {
2909 let word_range = movement::surrounding_word(
2910 &display_map,
2911 selection.start.to_display_point(&display_map),
2912 );
2913 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2914 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2915 selection.goal = SelectionGoal::None;
2916 selection.reversed = false;
2917
2918 let query = buffer
2919 .text_for_range(selection.start..selection.end)
2920 .collect::<String>();
2921 let select_state = SelectNextState {
2922 query: AhoCorasick::new_auto_configured(&[query]),
2923 wordwise: true,
2924 done: false,
2925 };
2926 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2927 self.select_next_state = Some(select_state);
2928 } else {
2929 let query = buffer
2930 .text_for_range(selection.start..selection.end)
2931 .collect::<String>();
2932 self.select_next_state = Some(SelectNextState {
2933 query: AhoCorasick::new_auto_configured(&[query]),
2934 wordwise: false,
2935 done: false,
2936 });
2937 self.select_next(action, cx);
2938 }
2939 }
2940 }
2941
2942 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2943 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2944 // as that portion won't be used for detecting if a line is a comment.
2945 let full_comment_prefix =
2946 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2947 prefix.to_string()
2948 } else {
2949 return;
2950 };
2951 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2952 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2953
2954 self.start_transaction(cx);
2955 let mut selections = self.local_selections::<Point>(cx);
2956 let mut all_selection_lines_are_comments = true;
2957 let mut edit_ranges = Vec::new();
2958 let mut last_toggled_row = None;
2959 self.buffer.update(cx, |buffer, cx| {
2960 for selection in &mut selections {
2961 edit_ranges.clear();
2962 let snapshot = buffer.snapshot(cx);
2963
2964 let end_row =
2965 if selection.end.row > selection.start.row && selection.end.column == 0 {
2966 selection.end.row
2967 } else {
2968 selection.end.row + 1
2969 };
2970
2971 for row in selection.start.row..end_row {
2972 // If multiple selections contain a given row, avoid processing that
2973 // row more than once.
2974 if last_toggled_row == Some(row) {
2975 continue;
2976 } else {
2977 last_toggled_row = Some(row);
2978 }
2979
2980 if snapshot.is_line_blank(row) {
2981 continue;
2982 }
2983
2984 let start = Point::new(row, snapshot.indent_column_for_line(row));
2985 let mut line_bytes = snapshot
2986 .bytes_in_range(start..snapshot.max_point())
2987 .flatten()
2988 .copied();
2989
2990 // If this line currently begins with the line comment prefix, then record
2991 // the range containing the prefix.
2992 if all_selection_lines_are_comments
2993 && line_bytes
2994 .by_ref()
2995 .take(comment_prefix.len())
2996 .eq(comment_prefix.bytes())
2997 {
2998 // Include any whitespace that matches the comment prefix.
2999 let matching_whitespace_len = line_bytes
3000 .zip(comment_prefix_whitespace.bytes())
3001 .take_while(|(a, b)| a == b)
3002 .count() as u32;
3003 let end = Point::new(
3004 row,
3005 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3006 );
3007 edit_ranges.push(start..end);
3008 }
3009 // If this line does not begin with the line comment prefix, then record
3010 // the position where the prefix should be inserted.
3011 else {
3012 all_selection_lines_are_comments = false;
3013 edit_ranges.push(start..start);
3014 }
3015 }
3016
3017 if !edit_ranges.is_empty() {
3018 if all_selection_lines_are_comments {
3019 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3020 } else {
3021 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3022 let edit_ranges = edit_ranges.iter().map(|range| {
3023 let position = Point::new(range.start.row, min_column);
3024 position..position
3025 });
3026 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3027 }
3028 }
3029 }
3030 });
3031
3032 self.update_selections(
3033 self.local_selections::<usize>(cx),
3034 Some(Autoscroll::Fit),
3035 cx,
3036 );
3037 self.end_transaction(cx);
3038 }
3039
3040 pub fn select_larger_syntax_node(
3041 &mut self,
3042 _: &SelectLargerSyntaxNode,
3043 cx: &mut ViewContext<Self>,
3044 ) {
3045 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3046 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3047 let buffer = self.buffer.read(cx).snapshot(cx);
3048
3049 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3050 let mut selected_larger_node = false;
3051 let new_selections = old_selections
3052 .iter()
3053 .map(|selection| {
3054 let old_range = selection.start..selection.end;
3055 let mut new_range = old_range.clone();
3056 while let Some(containing_range) =
3057 buffer.range_for_syntax_ancestor(new_range.clone())
3058 {
3059 new_range = containing_range;
3060 if !display_map.intersects_fold(new_range.start)
3061 && !display_map.intersects_fold(new_range.end)
3062 {
3063 break;
3064 }
3065 }
3066
3067 selected_larger_node |= new_range != old_range;
3068 Selection {
3069 id: selection.id,
3070 start: new_range.start,
3071 end: new_range.end,
3072 goal: SelectionGoal::None,
3073 reversed: selection.reversed,
3074 }
3075 })
3076 .collect::<Vec<_>>();
3077
3078 if selected_larger_node {
3079 stack.push(old_selections);
3080 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3081 }
3082 self.select_larger_syntax_node_stack = stack;
3083 }
3084
3085 pub fn select_smaller_syntax_node(
3086 &mut self,
3087 _: &SelectSmallerSyntaxNode,
3088 cx: &mut ViewContext<Self>,
3089 ) {
3090 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3091 if let Some(selections) = stack.pop() {
3092 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3093 }
3094 self.select_larger_syntax_node_stack = stack;
3095 }
3096
3097 pub fn move_to_enclosing_bracket(
3098 &mut self,
3099 _: &MoveToEnclosingBracket,
3100 cx: &mut ViewContext<Self>,
3101 ) {
3102 let mut selections = self.local_selections::<usize>(cx);
3103 let buffer = self.buffer.read(cx).snapshot(cx);
3104 for selection in &mut selections {
3105 if let Some((open_range, close_range)) =
3106 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3107 {
3108 let close_range = close_range.to_inclusive();
3109 let destination = if close_range.contains(&selection.start)
3110 && close_range.contains(&selection.end)
3111 {
3112 open_range.end
3113 } else {
3114 *close_range.start()
3115 };
3116 selection.start = destination;
3117 selection.end = destination;
3118 }
3119 }
3120
3121 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3122 }
3123
3124 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3125 let buffer = self.buffer.read(cx).snapshot(cx);
3126 let selection = self.newest_selection::<usize>(&buffer);
3127 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3128 active_diagnostics
3129 .primary_range
3130 .to_offset(&buffer)
3131 .to_inclusive()
3132 });
3133 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3134 if active_primary_range.contains(&selection.head()) {
3135 *active_primary_range.end()
3136 } else {
3137 selection.head()
3138 }
3139 } else {
3140 selection.head()
3141 };
3142
3143 loop {
3144 let next_group = buffer
3145 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3146 .find_map(|entry| {
3147 if entry.diagnostic.is_primary
3148 && !entry.range.is_empty()
3149 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3150 {
3151 Some((entry.range, entry.diagnostic.group_id))
3152 } else {
3153 None
3154 }
3155 });
3156
3157 if let Some((primary_range, group_id)) = next_group {
3158 self.activate_diagnostics(group_id, cx);
3159 self.update_selections(
3160 vec![Selection {
3161 id: selection.id,
3162 start: primary_range.start,
3163 end: primary_range.start,
3164 reversed: false,
3165 goal: SelectionGoal::None,
3166 }],
3167 Some(Autoscroll::Center),
3168 cx,
3169 );
3170 break;
3171 } else if search_start == 0 {
3172 break;
3173 } else {
3174 // Cycle around to the start of the buffer.
3175 search_start = 0;
3176 }
3177 }
3178 }
3179
3180 pub fn go_to_definition(
3181 workspace: &mut Workspace,
3182 _: &GoToDefinition,
3183 cx: &mut ViewContext<Workspace>,
3184 ) {
3185 let active_item = workspace.active_item(cx);
3186 let editor_handle = if let Some(editor) = active_item
3187 .as_ref()
3188 .and_then(|item| item.act_as::<Self>(cx))
3189 {
3190 editor
3191 } else {
3192 return;
3193 };
3194
3195 let editor = editor_handle.read(cx);
3196 let buffer = editor.buffer.read(cx);
3197 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3198 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3199 let definitions = workspace
3200 .project()
3201 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3202 cx.spawn(|workspace, mut cx| async move {
3203 let definitions = definitions.await?;
3204 workspace.update(&mut cx, |workspace, cx| {
3205 for definition in definitions {
3206 let range = definition
3207 .target_range
3208 .to_offset(definition.target_buffer.read(cx));
3209 let target_editor_handle = workspace
3210 .open_item(BufferItemHandle(definition.target_buffer), cx)
3211 .downcast::<Self>()
3212 .unwrap();
3213
3214 target_editor_handle.update(cx, |target_editor, cx| {
3215 // When selecting a definition in a different buffer, disable the nav history
3216 // to avoid creating a history entry at the previous cursor location.
3217 let disabled_history = if editor_handle == target_editor_handle {
3218 None
3219 } else {
3220 target_editor.nav_history.take()
3221 };
3222 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3223 if disabled_history.is_some() {
3224 target_editor.nav_history = disabled_history;
3225 }
3226 });
3227 }
3228 });
3229
3230 Ok::<(), anyhow::Error>(())
3231 })
3232 .detach_and_log_err(cx);
3233 }
3234
3235 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3236 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3237 let buffer = self.buffer.read(cx).snapshot(cx);
3238 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3239 let is_valid = buffer
3240 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3241 .any(|entry| {
3242 entry.diagnostic.is_primary
3243 && !entry.range.is_empty()
3244 && entry.range.start == primary_range_start
3245 && entry.diagnostic.message == active_diagnostics.primary_message
3246 });
3247
3248 if is_valid != active_diagnostics.is_valid {
3249 active_diagnostics.is_valid = is_valid;
3250 let mut new_styles = HashMap::default();
3251 for (block_id, diagnostic) in &active_diagnostics.blocks {
3252 new_styles.insert(
3253 *block_id,
3254 diagnostic_block_renderer(
3255 diagnostic.clone(),
3256 is_valid,
3257 self.build_settings.clone(),
3258 ),
3259 );
3260 }
3261 self.display_map
3262 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3263 }
3264 }
3265 }
3266
3267 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3268 self.dismiss_diagnostics(cx);
3269 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3270 let buffer = self.buffer.read(cx).snapshot(cx);
3271
3272 let mut primary_range = None;
3273 let mut primary_message = None;
3274 let mut group_end = Point::zero();
3275 let diagnostic_group = buffer
3276 .diagnostic_group::<Point>(group_id)
3277 .map(|entry| {
3278 if entry.range.end > group_end {
3279 group_end = entry.range.end;
3280 }
3281 if entry.diagnostic.is_primary {
3282 primary_range = Some(entry.range.clone());
3283 primary_message = Some(entry.diagnostic.message.clone());
3284 }
3285 entry
3286 })
3287 .collect::<Vec<_>>();
3288 let primary_range = primary_range.unwrap();
3289 let primary_message = primary_message.unwrap();
3290 let primary_range =
3291 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3292
3293 let blocks = display_map
3294 .insert_blocks(
3295 diagnostic_group.iter().map(|entry| {
3296 let build_settings = self.build_settings.clone();
3297 let diagnostic = entry.diagnostic.clone();
3298 let message_height = diagnostic.message.lines().count() as u8;
3299
3300 BlockProperties {
3301 position: buffer.anchor_after(entry.range.start),
3302 height: message_height,
3303 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3304 disposition: BlockDisposition::Below,
3305 }
3306 }),
3307 cx,
3308 )
3309 .into_iter()
3310 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3311 .collect();
3312
3313 Some(ActiveDiagnosticGroup {
3314 primary_range,
3315 primary_message,
3316 blocks,
3317 is_valid: true,
3318 })
3319 });
3320 }
3321
3322 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3323 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3324 self.display_map.update(cx, |display_map, cx| {
3325 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3326 });
3327 cx.notify();
3328 }
3329 }
3330
3331 fn build_columnar_selection(
3332 &mut self,
3333 display_map: &DisplaySnapshot,
3334 row: u32,
3335 columns: &Range<u32>,
3336 reversed: bool,
3337 ) -> Option<Selection<Point>> {
3338 let is_empty = columns.start == columns.end;
3339 let line_len = display_map.line_len(row);
3340 if columns.start < line_len || (is_empty && columns.start == line_len) {
3341 let start = DisplayPoint::new(row, columns.start);
3342 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3343 Some(Selection {
3344 id: post_inc(&mut self.next_selection_id),
3345 start: start.to_point(display_map),
3346 end: end.to_point(display_map),
3347 reversed,
3348 goal: SelectionGoal::ColumnRange {
3349 start: columns.start,
3350 end: columns.end,
3351 },
3352 })
3353 } else {
3354 None
3355 }
3356 }
3357
3358 pub fn local_selections_in_range(
3359 &self,
3360 range: Range<Anchor>,
3361 display_map: &DisplaySnapshot,
3362 ) -> Vec<Selection<Point>> {
3363 let buffer = &display_map.buffer_snapshot;
3364
3365 let start_ix = match self
3366 .selections
3367 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3368 {
3369 Ok(ix) | Err(ix) => ix,
3370 };
3371 let end_ix = match self
3372 .selections
3373 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3374 {
3375 Ok(ix) => ix + 1,
3376 Err(ix) => ix,
3377 };
3378
3379 fn point_selection(
3380 selection: &Selection<Anchor>,
3381 buffer: &MultiBufferSnapshot,
3382 ) -> Selection<Point> {
3383 let start = selection.start.to_point(&buffer);
3384 let end = selection.end.to_point(&buffer);
3385 Selection {
3386 id: selection.id,
3387 start,
3388 end,
3389 reversed: selection.reversed,
3390 goal: selection.goal,
3391 }
3392 }
3393
3394 self.selections[start_ix..end_ix]
3395 .iter()
3396 .chain(
3397 self.pending_selection
3398 .as_ref()
3399 .map(|pending| &pending.selection),
3400 )
3401 .map(|s| point_selection(s, &buffer))
3402 .collect()
3403 }
3404
3405 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3406 where
3407 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3408 {
3409 let buffer = self.buffer.read(cx).snapshot(cx);
3410 let mut selections = self
3411 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3412 .peekable();
3413
3414 let mut pending_selection = self.pending_selection::<D>(&buffer);
3415
3416 iter::from_fn(move || {
3417 if let Some(pending) = pending_selection.as_mut() {
3418 while let Some(next_selection) = selections.peek() {
3419 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3420 let next_selection = selections.next().unwrap();
3421 if next_selection.start < pending.start {
3422 pending.start = next_selection.start;
3423 }
3424 if next_selection.end > pending.end {
3425 pending.end = next_selection.end;
3426 }
3427 } else if next_selection.end < pending.start {
3428 return selections.next();
3429 } else {
3430 break;
3431 }
3432 }
3433
3434 pending_selection.take()
3435 } else {
3436 selections.next()
3437 }
3438 })
3439 .collect()
3440 }
3441
3442 fn resolve_selections<'a, D, I>(
3443 &self,
3444 selections: I,
3445 snapshot: &MultiBufferSnapshot,
3446 ) -> impl 'a + Iterator<Item = Selection<D>>
3447 where
3448 D: TextDimension + Ord + Sub<D, Output = D>,
3449 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3450 {
3451 let (to_summarize, selections) = selections.into_iter().tee();
3452 let mut summaries = snapshot
3453 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3454 .into_iter();
3455 selections.map(move |s| Selection {
3456 id: s.id,
3457 start: summaries.next().unwrap(),
3458 end: summaries.next().unwrap(),
3459 reversed: s.reversed,
3460 goal: s.goal,
3461 })
3462 }
3463
3464 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3465 &self,
3466 snapshot: &MultiBufferSnapshot,
3467 ) -> Option<Selection<D>> {
3468 self.pending_selection
3469 .as_ref()
3470 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3471 }
3472
3473 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3474 &self,
3475 selection: &Selection<Anchor>,
3476 buffer: &MultiBufferSnapshot,
3477 ) -> Selection<D> {
3478 Selection {
3479 id: selection.id,
3480 start: selection.start.summary::<D>(&buffer),
3481 end: selection.end.summary::<D>(&buffer),
3482 reversed: selection.reversed,
3483 goal: selection.goal,
3484 }
3485 }
3486
3487 fn selection_count<'a>(&self) -> usize {
3488 let mut count = self.selections.len();
3489 if self.pending_selection.is_some() {
3490 count += 1;
3491 }
3492 count
3493 }
3494
3495 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3496 &self,
3497 snapshot: &MultiBufferSnapshot,
3498 ) -> Selection<D> {
3499 self.selections
3500 .iter()
3501 .min_by_key(|s| s.id)
3502 .map(|selection| self.resolve_selection(selection, snapshot))
3503 .or_else(|| self.pending_selection(snapshot))
3504 .unwrap()
3505 }
3506
3507 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3508 &self,
3509 snapshot: &MultiBufferSnapshot,
3510 ) -> Selection<D> {
3511 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3512 }
3513
3514 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3515 self.pending_selection
3516 .as_ref()
3517 .map(|s| &s.selection)
3518 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3519 }
3520
3521 pub fn update_selections<T>(
3522 &mut self,
3523 mut selections: Vec<Selection<T>>,
3524 autoscroll: Option<Autoscroll>,
3525 cx: &mut ViewContext<Self>,
3526 ) where
3527 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3528 {
3529 let buffer = self.buffer.read(cx).snapshot(cx);
3530 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
3531 selections.sort_unstable_by_key(|s| s.start);
3532
3533 // Merge overlapping selections.
3534 let mut i = 1;
3535 while i < selections.len() {
3536 if selections[i - 1].end >= selections[i].start {
3537 let removed = selections.remove(i);
3538 if removed.start < selections[i - 1].start {
3539 selections[i - 1].start = removed.start;
3540 }
3541 if removed.end > selections[i - 1].end {
3542 selections[i - 1].end = removed.end;
3543 }
3544 } else {
3545 i += 1;
3546 }
3547 }
3548
3549 self.pending_selection = None;
3550 self.add_selections_state = None;
3551 self.select_next_state = None;
3552 self.select_larger_syntax_node_stack.clear();
3553 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3554 let all_selections_inside_autoclose_ranges =
3555 if selections.len() == autoclose_pair.ranges.len() {
3556 selections
3557 .iter()
3558 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3559 .all(|(selection, autoclose_range)| {
3560 let head = selection.head().to_point(&buffer);
3561 autoclose_range.start <= head && autoclose_range.end >= head
3562 })
3563 } else {
3564 false
3565 };
3566
3567 if all_selections_inside_autoclose_ranges {
3568 break;
3569 } else {
3570 self.autoclose_stack.pop();
3571 }
3572 }
3573
3574 if let Some(old_cursor_position) = old_cursor_position {
3575 let new_cursor_position = selections
3576 .iter()
3577 .max_by_key(|s| s.id)
3578 .map(|s| s.head().to_point(&buffer));
3579 if new_cursor_position.is_some() {
3580 self.push_to_nav_history(old_cursor_position, new_cursor_position, cx);
3581 }
3582 }
3583
3584 if let Some(autoscroll) = autoscroll {
3585 self.request_autoscroll(autoscroll, cx);
3586 }
3587 self.pause_cursor_blinking(cx);
3588
3589 self.set_selections(
3590 Arc::from_iter(selections.into_iter().map(|selection| {
3591 let end_bias = if selection.end > selection.start {
3592 Bias::Left
3593 } else {
3594 Bias::Right
3595 };
3596 Selection {
3597 id: selection.id,
3598 start: buffer.anchor_after(selection.start),
3599 end: buffer.anchor_at(selection.end, end_bias),
3600 reversed: selection.reversed,
3601 goal: selection.goal,
3602 }
3603 })),
3604 cx,
3605 );
3606 }
3607
3608 /// Compute new ranges for any selections that were located in excerpts that have
3609 /// since been removed.
3610 ///
3611 /// Returns a `HashMap` indicating which selections whose former head position
3612 /// was no longer present. The keys of the map are selection ids. The values are
3613 /// the id of the new excerpt where the head of the selection has been moved.
3614 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3615 let snapshot = self.buffer.read(cx).read(cx);
3616 let anchors_with_status = snapshot.refresh_anchors(
3617 self.selections
3618 .iter()
3619 .flat_map(|selection| [&selection.start, &selection.end]),
3620 );
3621 let offsets =
3622 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
3623 let offsets = offsets.chunks(2);
3624 let statuses = anchors_with_status
3625 .chunks(2)
3626 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
3627
3628 let mut selections_with_lost_position = HashMap::default();
3629 let new_selections = offsets
3630 .zip(statuses)
3631 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
3632 let selection = &self.selections[selection_ix];
3633 let kept_head = if selection.reversed {
3634 kept_start
3635 } else {
3636 kept_end
3637 };
3638 if !kept_head {
3639 selections_with_lost_position
3640 .insert(selection.id, selection.head().excerpt_id.clone());
3641 }
3642
3643 Selection {
3644 id: selection.id,
3645 start: offsets[0],
3646 end: offsets[1],
3647 reversed: selection.reversed,
3648 goal: selection.goal,
3649 }
3650 })
3651 .collect();
3652 drop(snapshot);
3653 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3654 selections_with_lost_position
3655 }
3656
3657 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3658 self.selections = selections;
3659 if self.focused {
3660 self.buffer.update(cx, |buffer, cx| {
3661 buffer.set_active_selections(&self.selections, cx)
3662 });
3663 }
3664 cx.emit(Event::SelectionsChanged);
3665 }
3666
3667 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3668 self.autoscroll_request = Some(autoscroll);
3669 cx.notify();
3670 }
3671
3672 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3673 self.start_transaction_at(Instant::now(), cx);
3674 }
3675
3676 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3677 self.end_selection(cx);
3678 if let Some(tx_id) = self
3679 .buffer
3680 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3681 {
3682 self.selection_history
3683 .insert(tx_id, (self.selections.clone(), None));
3684 }
3685 }
3686
3687 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3688 self.end_transaction_at(Instant::now(), cx);
3689 }
3690
3691 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3692 if let Some(tx_id) = self
3693 .buffer
3694 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3695 {
3696 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
3697 *end_selections = Some(self.selections.clone());
3698 } else {
3699 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
3700 }
3701 }
3702 }
3703
3704 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3705 log::info!("Editor::page_up");
3706 }
3707
3708 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3709 log::info!("Editor::page_down");
3710 }
3711
3712 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3713 let mut fold_ranges = Vec::new();
3714
3715 let selections = self.local_selections::<Point>(cx);
3716 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3717 for selection in selections {
3718 let range = selection.display_range(&display_map).sorted();
3719 let buffer_start_row = range.start.to_point(&display_map).row;
3720
3721 for row in (0..=range.end.row()).rev() {
3722 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3723 let fold_range = self.foldable_range_for_line(&display_map, row);
3724 if fold_range.end.row >= buffer_start_row {
3725 fold_ranges.push(fold_range);
3726 if row <= range.start.row() {
3727 break;
3728 }
3729 }
3730 }
3731 }
3732 }
3733
3734 self.fold_ranges(fold_ranges, cx);
3735 }
3736
3737 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3738 let selections = self.local_selections::<Point>(cx);
3739 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3740 let buffer = &display_map.buffer_snapshot;
3741 let ranges = selections
3742 .iter()
3743 .map(|s| {
3744 let range = s.display_range(&display_map).sorted();
3745 let mut start = range.start.to_point(&display_map);
3746 let mut end = range.end.to_point(&display_map);
3747 start.column = 0;
3748 end.column = buffer.line_len(end.row);
3749 start..end
3750 })
3751 .collect::<Vec<_>>();
3752 self.unfold_ranges(ranges, cx);
3753 }
3754
3755 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3756 let max_point = display_map.max_point();
3757 if display_row >= max_point.row() {
3758 false
3759 } else {
3760 let (start_indent, is_blank) = display_map.line_indent(display_row);
3761 if is_blank {
3762 false
3763 } else {
3764 for display_row in display_row + 1..=max_point.row() {
3765 let (indent, is_blank) = display_map.line_indent(display_row);
3766 if !is_blank {
3767 return indent > start_indent;
3768 }
3769 }
3770 false
3771 }
3772 }
3773 }
3774
3775 fn foldable_range_for_line(
3776 &self,
3777 display_map: &DisplaySnapshot,
3778 start_row: u32,
3779 ) -> Range<Point> {
3780 let max_point = display_map.max_point();
3781
3782 let (start_indent, _) = display_map.line_indent(start_row);
3783 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3784 let mut end = None;
3785 for row in start_row + 1..=max_point.row() {
3786 let (indent, is_blank) = display_map.line_indent(row);
3787 if !is_blank && indent <= start_indent {
3788 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3789 break;
3790 }
3791 }
3792
3793 let end = end.unwrap_or(max_point);
3794 return start.to_point(display_map)..end.to_point(display_map);
3795 }
3796
3797 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3798 let selections = self.local_selections::<Point>(cx);
3799 let ranges = selections.into_iter().map(|s| s.start..s.end);
3800 self.fold_ranges(ranges, cx);
3801 }
3802
3803 fn fold_ranges<T: ToOffset>(
3804 &mut self,
3805 ranges: impl IntoIterator<Item = Range<T>>,
3806 cx: &mut ViewContext<Self>,
3807 ) {
3808 let mut ranges = ranges.into_iter().peekable();
3809 if ranges.peek().is_some() {
3810 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3811 self.request_autoscroll(Autoscroll::Fit, cx);
3812 cx.notify();
3813 }
3814 }
3815
3816 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3817 if !ranges.is_empty() {
3818 self.display_map
3819 .update(cx, |map, cx| map.unfold(ranges, cx));
3820 self.request_autoscroll(Autoscroll::Fit, cx);
3821 cx.notify();
3822 }
3823 }
3824
3825 pub fn insert_blocks(
3826 &mut self,
3827 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3828 cx: &mut ViewContext<Self>,
3829 ) -> Vec<BlockId> {
3830 let blocks = self
3831 .display_map
3832 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3833 self.request_autoscroll(Autoscroll::Fit, cx);
3834 blocks
3835 }
3836
3837 pub fn replace_blocks(
3838 &mut self,
3839 blocks: HashMap<BlockId, RenderBlock>,
3840 cx: &mut ViewContext<Self>,
3841 ) {
3842 self.display_map
3843 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3844 self.request_autoscroll(Autoscroll::Fit, cx);
3845 }
3846
3847 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3848 self.display_map.update(cx, |display_map, cx| {
3849 display_map.remove_blocks(block_ids, cx)
3850 });
3851 }
3852
3853 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3854 self.display_map
3855 .update(cx, |map, cx| map.snapshot(cx))
3856 .longest_row()
3857 }
3858
3859 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3860 self.display_map
3861 .update(cx, |map, cx| map.snapshot(cx))
3862 .max_point()
3863 }
3864
3865 pub fn text(&self, cx: &AppContext) -> String {
3866 self.buffer.read(cx).read(cx).text()
3867 }
3868
3869 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3870 self.display_map
3871 .update(cx, |map, cx| map.snapshot(cx))
3872 .text()
3873 }
3874
3875 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3876 self.display_map
3877 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3878 }
3879
3880 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
3881 self.highlighted_rows = rows;
3882 }
3883
3884 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
3885 self.highlighted_rows.clone()
3886 }
3887
3888 pub fn highlight_ranges<T: 'static>(
3889 &mut self,
3890 ranges: Vec<Range<Anchor>>,
3891 color: Color,
3892 cx: &mut ViewContext<Self>,
3893 ) {
3894 self.highlighted_ranges
3895 .insert(TypeId::of::<T>(), (color, ranges));
3896 cx.notify();
3897 }
3898
3899 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
3900 self.highlighted_ranges.remove(&TypeId::of::<T>());
3901 cx.notify();
3902 }
3903
3904 #[cfg(feature = "test-support")]
3905 pub fn all_highlighted_ranges(
3906 &mut self,
3907 cx: &mut ViewContext<Self>,
3908 ) -> Vec<(Range<DisplayPoint>, Color)> {
3909 let snapshot = self.snapshot(cx);
3910 let buffer = &snapshot.buffer_snapshot;
3911 let start = buffer.anchor_before(0);
3912 let end = buffer.anchor_after(buffer.len());
3913 self.highlighted_ranges_in_range(start..end, &snapshot)
3914 }
3915
3916 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
3917 self.highlighted_ranges
3918 .get(&TypeId::of::<T>())
3919 .map(|(color, ranges)| (*color, ranges.as_slice()))
3920 }
3921
3922 pub fn highlighted_ranges_in_range(
3923 &self,
3924 search_range: Range<Anchor>,
3925 display_snapshot: &DisplaySnapshot,
3926 ) -> Vec<(Range<DisplayPoint>, Color)> {
3927 let mut results = Vec::new();
3928 let buffer = &display_snapshot.buffer_snapshot;
3929 for (color, ranges) in self.highlighted_ranges.values() {
3930 let start_ix = match ranges.binary_search_by(|probe| {
3931 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
3932 if cmp.is_gt() {
3933 Ordering::Greater
3934 } else {
3935 Ordering::Less
3936 }
3937 }) {
3938 Ok(i) | Err(i) => i,
3939 };
3940 for range in &ranges[start_ix..] {
3941 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
3942 break;
3943 }
3944 let start = range
3945 .start
3946 .to_point(buffer)
3947 .to_display_point(display_snapshot);
3948 let end = range
3949 .end
3950 .to_point(buffer)
3951 .to_display_point(display_snapshot);
3952 results.push((start..end, *color))
3953 }
3954 }
3955 results
3956 }
3957
3958 fn next_blink_epoch(&mut self) -> usize {
3959 self.blink_epoch += 1;
3960 self.blink_epoch
3961 }
3962
3963 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3964 if !self.focused {
3965 return;
3966 }
3967
3968 self.show_local_cursors = true;
3969 cx.notify();
3970
3971 let epoch = self.next_blink_epoch();
3972 cx.spawn(|this, mut cx| {
3973 let this = this.downgrade();
3974 async move {
3975 Timer::after(CURSOR_BLINK_INTERVAL).await;
3976 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3977 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3978 }
3979 }
3980 })
3981 .detach();
3982 }
3983
3984 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3985 if epoch == self.blink_epoch {
3986 self.blinking_paused = false;
3987 self.blink_cursors(epoch, cx);
3988 }
3989 }
3990
3991 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3992 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3993 self.show_local_cursors = !self.show_local_cursors;
3994 cx.notify();
3995
3996 let epoch = self.next_blink_epoch();
3997 cx.spawn(|this, mut cx| {
3998 let this = this.downgrade();
3999 async move {
4000 Timer::after(CURSOR_BLINK_INTERVAL).await;
4001 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4002 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4003 }
4004 }
4005 })
4006 .detach();
4007 }
4008 }
4009
4010 pub fn show_local_cursors(&self) -> bool {
4011 self.show_local_cursors
4012 }
4013
4014 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4015 self.refresh_active_diagnostics(cx);
4016 cx.notify();
4017 }
4018
4019 fn on_buffer_event(
4020 &mut self,
4021 _: ModelHandle<MultiBuffer>,
4022 event: &language::Event,
4023 cx: &mut ViewContext<Self>,
4024 ) {
4025 match event {
4026 language::Event::Edited => cx.emit(Event::Edited),
4027 language::Event::Dirtied => cx.emit(Event::Dirtied),
4028 language::Event::Saved => cx.emit(Event::Saved),
4029 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4030 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4031 language::Event::Closed => cx.emit(Event::Closed),
4032 _ => {}
4033 }
4034 }
4035
4036 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4037 cx.notify();
4038 }
4039}
4040
4041impl EditorSnapshot {
4042 pub fn is_focused(&self) -> bool {
4043 self.is_focused
4044 }
4045
4046 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4047 self.placeholder_text.as_ref()
4048 }
4049
4050 pub fn scroll_position(&self) -> Vector2F {
4051 compute_scroll_position(
4052 &self.display_snapshot,
4053 self.scroll_position,
4054 &self.scroll_top_anchor,
4055 )
4056 }
4057}
4058
4059impl Deref for EditorSnapshot {
4060 type Target = DisplaySnapshot;
4061
4062 fn deref(&self) -> &Self::Target {
4063 &self.display_snapshot
4064 }
4065}
4066
4067impl EditorSettings {
4068 #[cfg(any(test, feature = "test-support"))]
4069 pub fn test(cx: &AppContext) -> Self {
4070 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4071
4072 Self {
4073 tab_size: 4,
4074 soft_wrap: SoftWrap::None,
4075 style: {
4076 let font_cache: &gpui::FontCache = cx.font_cache();
4077 let font_family_name = Arc::from("Monaco");
4078 let font_properties = Default::default();
4079 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4080 let font_id = font_cache
4081 .select_font(font_family_id, &font_properties)
4082 .unwrap();
4083 let text = gpui::fonts::TextStyle {
4084 font_family_name,
4085 font_family_id,
4086 font_id,
4087 font_size: 14.,
4088 color: gpui::color::Color::from_u32(0xff0000ff),
4089 font_properties,
4090 underline: None,
4091 };
4092 let default_diagnostic_style = DiagnosticStyle {
4093 message: text.clone().into(),
4094 header: Default::default(),
4095 text_scale_factor: 1.,
4096 };
4097 EditorStyle {
4098 text: text.clone(),
4099 placeholder_text: None,
4100 background: Default::default(),
4101 gutter_background: Default::default(),
4102 gutter_padding_factor: 2.,
4103 active_line_background: Default::default(),
4104 highlighted_line_background: Default::default(),
4105 line_number: Default::default(),
4106 line_number_active: Default::default(),
4107 selection: Default::default(),
4108 guest_selections: Default::default(),
4109 syntax: Default::default(),
4110 diagnostic_path_header: DiagnosticPathHeader {
4111 container: Default::default(),
4112 filename: ContainedText {
4113 container: Default::default(),
4114 text: text.clone(),
4115 },
4116 path: ContainedText {
4117 container: Default::default(),
4118 text: text.clone(),
4119 },
4120 text_scale_factor: 1.,
4121 },
4122 diagnostic_header: DiagnosticHeader {
4123 container: Default::default(),
4124 message: ContainedLabel {
4125 container: Default::default(),
4126 label: text.clone().into(),
4127 },
4128 code: ContainedText {
4129 container: Default::default(),
4130 text: text.clone(),
4131 },
4132 icon_width_factor: 1.,
4133 text_scale_factor: 1.,
4134 },
4135 error_diagnostic: default_diagnostic_style.clone(),
4136 invalid_error_diagnostic: default_diagnostic_style.clone(),
4137 warning_diagnostic: default_diagnostic_style.clone(),
4138 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4139 information_diagnostic: default_diagnostic_style.clone(),
4140 invalid_information_diagnostic: default_diagnostic_style.clone(),
4141 hint_diagnostic: default_diagnostic_style.clone(),
4142 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4143 autocomplete: Default::default(),
4144 }
4145 },
4146 }
4147 }
4148}
4149
4150fn compute_scroll_position(
4151 snapshot: &DisplaySnapshot,
4152 mut scroll_position: Vector2F,
4153 scroll_top_anchor: &Option<Anchor>,
4154) -> Vector2F {
4155 if let Some(anchor) = scroll_top_anchor {
4156 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4157 scroll_position.set_y(scroll_top + scroll_position.y());
4158 } else {
4159 scroll_position.set_y(0.);
4160 }
4161 scroll_position
4162}
4163
4164#[derive(Copy, Clone)]
4165pub enum Event {
4166 Activate,
4167 Edited,
4168 Blurred,
4169 Dirtied,
4170 Saved,
4171 TitleChanged,
4172 SelectionsChanged,
4173 Closed,
4174}
4175
4176impl Entity for Editor {
4177 type Event = Event;
4178}
4179
4180impl View for Editor {
4181 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4182 let settings = (self.build_settings)(cx);
4183 self.display_map.update(cx, |map, cx| {
4184 map.set_font(
4185 settings.style.text.font_id,
4186 settings.style.text.font_size,
4187 cx,
4188 )
4189 });
4190 EditorElement::new(self.handle.clone(), settings).boxed()
4191 }
4192
4193 fn ui_name() -> &'static str {
4194 "Editor"
4195 }
4196
4197 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4198 self.focused = true;
4199 self.blink_cursors(self.blink_epoch, cx);
4200 self.buffer.update(cx, |buffer, cx| {
4201 buffer.avoid_grouping_next_transaction(cx);
4202 buffer.set_active_selections(&self.selections, cx)
4203 });
4204 }
4205
4206 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4207 self.focused = false;
4208 self.show_local_cursors = false;
4209 self.buffer
4210 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4211 cx.emit(Event::Blurred);
4212 cx.notify();
4213 }
4214
4215 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4216 let mut cx = Self::default_keymap_context();
4217 let mode = match self.mode {
4218 EditorMode::SingleLine => "single_line",
4219 EditorMode::AutoHeight { .. } => "auto_height",
4220 EditorMode::Full => "full",
4221 };
4222 cx.map.insert("mode".into(), mode.into());
4223 if self.completion_state.is_some() {
4224 cx.set.insert("completing".into());
4225 }
4226 cx
4227 }
4228}
4229
4230impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4231 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4232 let start = self.start.to_point(buffer);
4233 let end = self.end.to_point(buffer);
4234 if self.reversed {
4235 end..start
4236 } else {
4237 start..end
4238 }
4239 }
4240
4241 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4242 let start = self.start.to_offset(buffer);
4243 let end = self.end.to_offset(buffer);
4244 if self.reversed {
4245 end..start
4246 } else {
4247 start..end
4248 }
4249 }
4250
4251 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4252 let start = self
4253 .start
4254 .to_point(&map.buffer_snapshot)
4255 .to_display_point(map);
4256 let end = self
4257 .end
4258 .to_point(&map.buffer_snapshot)
4259 .to_display_point(map);
4260 if self.reversed {
4261 end..start
4262 } else {
4263 start..end
4264 }
4265 }
4266
4267 fn spanned_rows(
4268 &self,
4269 include_end_if_at_line_start: bool,
4270 map: &DisplaySnapshot,
4271 ) -> Range<u32> {
4272 let start = self.start.to_point(&map.buffer_snapshot);
4273 let mut end = self.end.to_point(&map.buffer_snapshot);
4274 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4275 end.row -= 1;
4276 }
4277
4278 let buffer_start = map.prev_line_boundary(start).0;
4279 let buffer_end = map.next_line_boundary(end).0;
4280 buffer_start.row..buffer_end.row + 1
4281 }
4282}
4283
4284pub fn diagnostic_block_renderer(
4285 diagnostic: Diagnostic,
4286 is_valid: bool,
4287 build_settings: BuildSettings,
4288) -> RenderBlock {
4289 let mut highlighted_lines = Vec::new();
4290 for line in diagnostic.message.lines() {
4291 highlighted_lines.push(highlight_diagnostic_message(line));
4292 }
4293
4294 Arc::new(move |cx: &BlockContext| {
4295 let settings = build_settings(cx);
4296 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4297 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4298 Flex::column()
4299 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4300 Label::new(
4301 line.clone(),
4302 style.message.clone().with_font_size(font_size),
4303 )
4304 .with_highlights(highlights.clone())
4305 .contained()
4306 .with_margin_left(cx.anchor_x)
4307 .boxed()
4308 }))
4309 .aligned()
4310 .left()
4311 .boxed()
4312 })
4313}
4314
4315pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4316 let mut message_without_backticks = String::new();
4317 let mut prev_offset = 0;
4318 let mut inside_block = false;
4319 let mut highlights = Vec::new();
4320 for (match_ix, (offset, _)) in message
4321 .match_indices('`')
4322 .chain([(message.len(), "")])
4323 .enumerate()
4324 {
4325 message_without_backticks.push_str(&message[prev_offset..offset]);
4326 if inside_block {
4327 highlights.extend(prev_offset - match_ix..offset - match_ix);
4328 }
4329
4330 inside_block = !inside_block;
4331 prev_offset = offset + 1;
4332 }
4333
4334 (message_without_backticks, highlights)
4335}
4336
4337pub fn diagnostic_style(
4338 severity: DiagnosticSeverity,
4339 valid: bool,
4340 style: &EditorStyle,
4341) -> DiagnosticStyle {
4342 match (severity, valid) {
4343 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4344 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4345 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4346 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4347 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4348 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4349 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4350 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4351 _ => DiagnosticStyle {
4352 message: style.text.clone().into(),
4353 header: Default::default(),
4354 text_scale_factor: 1.,
4355 },
4356 }
4357}
4358
4359pub fn settings_builder(
4360 buffer: WeakModelHandle<MultiBuffer>,
4361 settings: watch::Receiver<workspace::Settings>,
4362) -> BuildSettings {
4363 Arc::new(move |cx| {
4364 let settings = settings.borrow();
4365 let font_cache = cx.font_cache();
4366 let font_family_id = settings.buffer_font_family;
4367 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4368 let font_properties = Default::default();
4369 let font_id = font_cache
4370 .select_font(font_family_id, &font_properties)
4371 .unwrap();
4372 let font_size = settings.buffer_font_size;
4373
4374 let mut theme = settings.theme.editor.clone();
4375 theme.text = TextStyle {
4376 color: theme.text.color,
4377 font_family_name,
4378 font_family_id,
4379 font_id,
4380 font_size,
4381 font_properties,
4382 underline: None,
4383 };
4384 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4385 let soft_wrap = match settings.soft_wrap(language) {
4386 workspace::settings::SoftWrap::None => SoftWrap::None,
4387 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4388 workspace::settings::SoftWrap::PreferredLineLength => {
4389 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4390 }
4391 };
4392
4393 EditorSettings {
4394 tab_size: settings.tab_size,
4395 soft_wrap,
4396 style: theme,
4397 }
4398 })
4399}
4400
4401pub fn char_kind(c: char) -> CharKind {
4402 if c == '\n' {
4403 CharKind::Newline
4404 } else if c.is_whitespace() {
4405 CharKind::Whitespace
4406 } else if c.is_alphanumeric() || c == '_' {
4407 CharKind::Word
4408 } else {
4409 CharKind::Punctuation
4410 }
4411}
4412
4413#[cfg(test)]
4414mod tests {
4415 use super::*;
4416 use language::{FakeFile, LanguageConfig};
4417 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
4418 use text::Point;
4419 use unindent::Unindent;
4420 use util::test::sample_text;
4421
4422 #[gpui::test]
4423 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
4424 let mut now = Instant::now();
4425 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
4426 let group_interval = buffer.read(cx).transaction_group_interval();
4427 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
4428 let settings = EditorSettings::test(cx);
4429 let (_, editor) = cx.add_window(Default::default(), |cx| {
4430 build_editor(buffer.clone(), settings, cx)
4431 });
4432
4433 editor.update(cx, |editor, cx| {
4434 editor.start_transaction_at(now, cx);
4435 editor.select_ranges([2..4], None, cx);
4436 editor.insert("cd", cx);
4437 editor.end_transaction_at(now, cx);
4438 assert_eq!(editor.text(cx), "12cd56");
4439 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
4440
4441 editor.start_transaction_at(now, cx);
4442 editor.select_ranges([4..5], None, cx);
4443 editor.insert("e", cx);
4444 editor.end_transaction_at(now, cx);
4445 assert_eq!(editor.text(cx), "12cde6");
4446 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4447
4448 now += group_interval + Duration::from_millis(1);
4449 editor.select_ranges([2..2], None, cx);
4450
4451 // Simulate an edit in another editor
4452 buffer.update(cx, |buffer, cx| {
4453 buffer.start_transaction_at(now, cx);
4454 buffer.edit([0..1], "a", cx);
4455 buffer.edit([1..1], "b", cx);
4456 buffer.end_transaction_at(now, cx);
4457 });
4458
4459 assert_eq!(editor.text(cx), "ab2cde6");
4460 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4461
4462 // Last transaction happened past the group interval in a different editor.
4463 // Undo it individually and don't restore selections.
4464 editor.undo(&Undo, cx);
4465 assert_eq!(editor.text(cx), "12cde6");
4466 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4467
4468 // First two transactions happened within the group interval in this editor.
4469 // Undo them together and restore selections.
4470 editor.undo(&Undo, cx);
4471 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4472 assert_eq!(editor.text(cx), "123456");
4473 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4474
4475 // Redo the first two transactions together.
4476 editor.redo(&Redo, cx);
4477 assert_eq!(editor.text(cx), "12cde6");
4478 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4479
4480 // Redo the last transaction on its own.
4481 editor.redo(&Redo, cx);
4482 assert_eq!(editor.text(cx), "ab2cde6");
4483 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4484
4485 // Test empty transactions.
4486 editor.start_transaction_at(now, cx);
4487 editor.end_transaction_at(now, cx);
4488 editor.undo(&Undo, cx);
4489 assert_eq!(editor.text(cx), "12cde6");
4490 });
4491 }
4492
4493 #[gpui::test]
4494 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4495 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4496 let settings = EditorSettings::test(cx);
4497 let (_, editor) =
4498 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4499
4500 editor.update(cx, |view, cx| {
4501 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4502 });
4503
4504 assert_eq!(
4505 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4506 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4507 );
4508
4509 editor.update(cx, |view, cx| {
4510 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4511 });
4512
4513 assert_eq!(
4514 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4515 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4516 );
4517
4518 editor.update(cx, |view, cx| {
4519 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4520 });
4521
4522 assert_eq!(
4523 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4524 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4525 );
4526
4527 editor.update(cx, |view, cx| {
4528 view.end_selection(cx);
4529 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4530 });
4531
4532 assert_eq!(
4533 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4534 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4535 );
4536
4537 editor.update(cx, |view, cx| {
4538 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4539 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4540 });
4541
4542 assert_eq!(
4543 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4544 [
4545 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4546 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4547 ]
4548 );
4549
4550 editor.update(cx, |view, cx| {
4551 view.end_selection(cx);
4552 });
4553
4554 assert_eq!(
4555 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4556 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4557 );
4558 }
4559
4560 #[gpui::test]
4561 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4562 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4563 let settings = EditorSettings::test(cx);
4564 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4565
4566 view.update(cx, |view, cx| {
4567 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4568 assert_eq!(
4569 view.selected_display_ranges(cx),
4570 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4571 );
4572 });
4573
4574 view.update(cx, |view, cx| {
4575 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4576 assert_eq!(
4577 view.selected_display_ranges(cx),
4578 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4579 );
4580 });
4581
4582 view.update(cx, |view, cx| {
4583 view.cancel(&Cancel, cx);
4584 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4585 assert_eq!(
4586 view.selected_display_ranges(cx),
4587 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4588 );
4589 });
4590 }
4591
4592 #[gpui::test]
4593 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
4594 cx.add_window(Default::default(), |cx| {
4595 use workspace::ItemView;
4596 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
4597 let settings = EditorSettings::test(&cx);
4598 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
4599 let mut editor = build_editor(buffer.clone(), settings, cx);
4600 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
4601
4602 // Move the cursor a small distance.
4603 // Nothing is added to the navigation history.
4604 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
4605 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
4606 assert!(nav_history.borrow_mut().pop_backward().is_none());
4607
4608 // Move the cursor a large distance.
4609 // The history can jump back to the previous position.
4610 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
4611 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4612 editor.navigate(nav_entry.data.unwrap(), cx);
4613 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4614 assert_eq!(
4615 editor.selected_display_ranges(cx),
4616 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
4617 );
4618
4619 // Move the cursor a small distance via the mouse.
4620 // Nothing is added to the navigation history.
4621 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
4622 editor.end_selection(cx);
4623 assert_eq!(
4624 editor.selected_display_ranges(cx),
4625 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4626 );
4627 assert!(nav_history.borrow_mut().pop_backward().is_none());
4628
4629 // Move the cursor a large distance via the mouse.
4630 // The history can jump back to the previous position.
4631 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
4632 editor.end_selection(cx);
4633 assert_eq!(
4634 editor.selected_display_ranges(cx),
4635 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
4636 );
4637 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
4638 editor.navigate(nav_entry.data.unwrap(), cx);
4639 assert_eq!(nav_entry.item_view.id(), cx.view_id());
4640 assert_eq!(
4641 editor.selected_display_ranges(cx),
4642 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
4643 );
4644
4645 editor
4646 });
4647 }
4648
4649 #[gpui::test]
4650 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4651 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4652 let settings = EditorSettings::test(cx);
4653 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4654
4655 view.update(cx, |view, cx| {
4656 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4657 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4658 view.end_selection(cx);
4659
4660 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4661 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4662 view.end_selection(cx);
4663 assert_eq!(
4664 view.selected_display_ranges(cx),
4665 [
4666 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4667 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4668 ]
4669 );
4670 });
4671
4672 view.update(cx, |view, cx| {
4673 view.cancel(&Cancel, cx);
4674 assert_eq!(
4675 view.selected_display_ranges(cx),
4676 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4677 );
4678 });
4679
4680 view.update(cx, |view, cx| {
4681 view.cancel(&Cancel, cx);
4682 assert_eq!(
4683 view.selected_display_ranges(cx),
4684 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4685 );
4686 });
4687 }
4688
4689 #[gpui::test]
4690 fn test_fold(cx: &mut gpui::MutableAppContext) {
4691 let buffer = MultiBuffer::build_simple(
4692 &"
4693 impl Foo {
4694 // Hello!
4695
4696 fn a() {
4697 1
4698 }
4699
4700 fn b() {
4701 2
4702 }
4703
4704 fn c() {
4705 3
4706 }
4707 }
4708 "
4709 .unindent(),
4710 cx,
4711 );
4712 let settings = EditorSettings::test(&cx);
4713 let (_, view) = cx.add_window(Default::default(), |cx| {
4714 build_editor(buffer.clone(), settings, cx)
4715 });
4716
4717 view.update(cx, |view, cx| {
4718 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
4719 view.fold(&Fold, cx);
4720 assert_eq!(
4721 view.display_text(cx),
4722 "
4723 impl Foo {
4724 // Hello!
4725
4726 fn a() {
4727 1
4728 }
4729
4730 fn b() {…
4731 }
4732
4733 fn c() {…
4734 }
4735 }
4736 "
4737 .unindent(),
4738 );
4739
4740 view.fold(&Fold, cx);
4741 assert_eq!(
4742 view.display_text(cx),
4743 "
4744 impl Foo {…
4745 }
4746 "
4747 .unindent(),
4748 );
4749
4750 view.unfold(&Unfold, cx);
4751 assert_eq!(
4752 view.display_text(cx),
4753 "
4754 impl Foo {
4755 // Hello!
4756
4757 fn a() {
4758 1
4759 }
4760
4761 fn b() {…
4762 }
4763
4764 fn c() {…
4765 }
4766 }
4767 "
4768 .unindent(),
4769 );
4770
4771 view.unfold(&Unfold, cx);
4772 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4773 });
4774 }
4775
4776 #[gpui::test]
4777 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4778 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4779 let settings = EditorSettings::test(&cx);
4780 let (_, view) = cx.add_window(Default::default(), |cx| {
4781 build_editor(buffer.clone(), settings, cx)
4782 });
4783
4784 buffer.update(cx, |buffer, cx| {
4785 buffer.edit(
4786 vec![
4787 Point::new(1, 0)..Point::new(1, 0),
4788 Point::new(1, 1)..Point::new(1, 1),
4789 ],
4790 "\t",
4791 cx,
4792 );
4793 });
4794
4795 view.update(cx, |view, cx| {
4796 assert_eq!(
4797 view.selected_display_ranges(cx),
4798 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4799 );
4800
4801 view.move_down(&MoveDown, cx);
4802 assert_eq!(
4803 view.selected_display_ranges(cx),
4804 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4805 );
4806
4807 view.move_right(&MoveRight, cx);
4808 assert_eq!(
4809 view.selected_display_ranges(cx),
4810 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4811 );
4812
4813 view.move_left(&MoveLeft, cx);
4814 assert_eq!(
4815 view.selected_display_ranges(cx),
4816 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4817 );
4818
4819 view.move_up(&MoveUp, cx);
4820 assert_eq!(
4821 view.selected_display_ranges(cx),
4822 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4823 );
4824
4825 view.move_to_end(&MoveToEnd, cx);
4826 assert_eq!(
4827 view.selected_display_ranges(cx),
4828 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4829 );
4830
4831 view.move_to_beginning(&MoveToBeginning, cx);
4832 assert_eq!(
4833 view.selected_display_ranges(cx),
4834 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4835 );
4836
4837 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
4838 view.select_to_beginning(&SelectToBeginning, cx);
4839 assert_eq!(
4840 view.selected_display_ranges(cx),
4841 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4842 );
4843
4844 view.select_to_end(&SelectToEnd, cx);
4845 assert_eq!(
4846 view.selected_display_ranges(cx),
4847 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4848 );
4849 });
4850 }
4851
4852 #[gpui::test]
4853 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4854 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4855 let settings = EditorSettings::test(&cx);
4856 let (_, view) = cx.add_window(Default::default(), |cx| {
4857 build_editor(buffer.clone(), settings, cx)
4858 });
4859
4860 assert_eq!('ⓐ'.len_utf8(), 3);
4861 assert_eq!('α'.len_utf8(), 2);
4862
4863 view.update(cx, |view, cx| {
4864 view.fold_ranges(
4865 vec![
4866 Point::new(0, 6)..Point::new(0, 12),
4867 Point::new(1, 2)..Point::new(1, 4),
4868 Point::new(2, 4)..Point::new(2, 8),
4869 ],
4870 cx,
4871 );
4872 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4873
4874 view.move_right(&MoveRight, cx);
4875 assert_eq!(
4876 view.selected_display_ranges(cx),
4877 &[empty_range(0, "ⓐ".len())]
4878 );
4879 view.move_right(&MoveRight, cx);
4880 assert_eq!(
4881 view.selected_display_ranges(cx),
4882 &[empty_range(0, "ⓐⓑ".len())]
4883 );
4884 view.move_right(&MoveRight, cx);
4885 assert_eq!(
4886 view.selected_display_ranges(cx),
4887 &[empty_range(0, "ⓐⓑ…".len())]
4888 );
4889
4890 view.move_down(&MoveDown, cx);
4891 assert_eq!(
4892 view.selected_display_ranges(cx),
4893 &[empty_range(1, "ab…".len())]
4894 );
4895 view.move_left(&MoveLeft, cx);
4896 assert_eq!(
4897 view.selected_display_ranges(cx),
4898 &[empty_range(1, "ab".len())]
4899 );
4900 view.move_left(&MoveLeft, cx);
4901 assert_eq!(
4902 view.selected_display_ranges(cx),
4903 &[empty_range(1, "a".len())]
4904 );
4905
4906 view.move_down(&MoveDown, cx);
4907 assert_eq!(
4908 view.selected_display_ranges(cx),
4909 &[empty_range(2, "α".len())]
4910 );
4911 view.move_right(&MoveRight, cx);
4912 assert_eq!(
4913 view.selected_display_ranges(cx),
4914 &[empty_range(2, "αβ".len())]
4915 );
4916 view.move_right(&MoveRight, cx);
4917 assert_eq!(
4918 view.selected_display_ranges(cx),
4919 &[empty_range(2, "αβ…".len())]
4920 );
4921 view.move_right(&MoveRight, cx);
4922 assert_eq!(
4923 view.selected_display_ranges(cx),
4924 &[empty_range(2, "αβ…ε".len())]
4925 );
4926
4927 view.move_up(&MoveUp, cx);
4928 assert_eq!(
4929 view.selected_display_ranges(cx),
4930 &[empty_range(1, "ab…e".len())]
4931 );
4932 view.move_up(&MoveUp, cx);
4933 assert_eq!(
4934 view.selected_display_ranges(cx),
4935 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4936 );
4937 view.move_left(&MoveLeft, cx);
4938 assert_eq!(
4939 view.selected_display_ranges(cx),
4940 &[empty_range(0, "ⓐⓑ…".len())]
4941 );
4942 view.move_left(&MoveLeft, cx);
4943 assert_eq!(
4944 view.selected_display_ranges(cx),
4945 &[empty_range(0, "ⓐⓑ".len())]
4946 );
4947 view.move_left(&MoveLeft, cx);
4948 assert_eq!(
4949 view.selected_display_ranges(cx),
4950 &[empty_range(0, "ⓐ".len())]
4951 );
4952 });
4953 }
4954
4955 #[gpui::test]
4956 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4957 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4958 let settings = EditorSettings::test(&cx);
4959 let (_, view) = cx.add_window(Default::default(), |cx| {
4960 build_editor(buffer.clone(), settings, cx)
4961 });
4962 view.update(cx, |view, cx| {
4963 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
4964 view.move_down(&MoveDown, cx);
4965 assert_eq!(
4966 view.selected_display_ranges(cx),
4967 &[empty_range(1, "abcd".len())]
4968 );
4969
4970 view.move_down(&MoveDown, cx);
4971 assert_eq!(
4972 view.selected_display_ranges(cx),
4973 &[empty_range(2, "αβγ".len())]
4974 );
4975
4976 view.move_down(&MoveDown, cx);
4977 assert_eq!(
4978 view.selected_display_ranges(cx),
4979 &[empty_range(3, "abcd".len())]
4980 );
4981
4982 view.move_down(&MoveDown, cx);
4983 assert_eq!(
4984 view.selected_display_ranges(cx),
4985 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4986 );
4987
4988 view.move_up(&MoveUp, cx);
4989 assert_eq!(
4990 view.selected_display_ranges(cx),
4991 &[empty_range(3, "abcd".len())]
4992 );
4993
4994 view.move_up(&MoveUp, cx);
4995 assert_eq!(
4996 view.selected_display_ranges(cx),
4997 &[empty_range(2, "αβγ".len())]
4998 );
4999 });
5000 }
5001
5002 #[gpui::test]
5003 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5004 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5005 let settings = EditorSettings::test(&cx);
5006 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5007 view.update(cx, |view, cx| {
5008 view.select_display_ranges(
5009 &[
5010 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5011 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5012 ],
5013 cx,
5014 );
5015 });
5016
5017 view.update(cx, |view, cx| {
5018 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5019 assert_eq!(
5020 view.selected_display_ranges(cx),
5021 &[
5022 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5023 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5024 ]
5025 );
5026 });
5027
5028 view.update(cx, |view, cx| {
5029 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5030 assert_eq!(
5031 view.selected_display_ranges(cx),
5032 &[
5033 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5034 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5035 ]
5036 );
5037 });
5038
5039 view.update(cx, |view, cx| {
5040 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5041 assert_eq!(
5042 view.selected_display_ranges(cx),
5043 &[
5044 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5045 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5046 ]
5047 );
5048 });
5049
5050 view.update(cx, |view, cx| {
5051 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5052 assert_eq!(
5053 view.selected_display_ranges(cx),
5054 &[
5055 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5056 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5057 ]
5058 );
5059 });
5060
5061 // Moving to the end of line again is a no-op.
5062 view.update(cx, |view, cx| {
5063 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5064 assert_eq!(
5065 view.selected_display_ranges(cx),
5066 &[
5067 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5068 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5069 ]
5070 );
5071 });
5072
5073 view.update(cx, |view, cx| {
5074 view.move_left(&MoveLeft, cx);
5075 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5076 assert_eq!(
5077 view.selected_display_ranges(cx),
5078 &[
5079 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5080 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5081 ]
5082 );
5083 });
5084
5085 view.update(cx, |view, cx| {
5086 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5087 assert_eq!(
5088 view.selected_display_ranges(cx),
5089 &[
5090 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5091 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5092 ]
5093 );
5094 });
5095
5096 view.update(cx, |view, cx| {
5097 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5098 assert_eq!(
5099 view.selected_display_ranges(cx),
5100 &[
5101 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5102 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5103 ]
5104 );
5105 });
5106
5107 view.update(cx, |view, cx| {
5108 view.select_to_end_of_line(&SelectToEndOfLine, cx);
5109 assert_eq!(
5110 view.selected_display_ranges(cx),
5111 &[
5112 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5113 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5114 ]
5115 );
5116 });
5117
5118 view.update(cx, |view, cx| {
5119 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5120 assert_eq!(view.display_text(cx), "ab\n de");
5121 assert_eq!(
5122 view.selected_display_ranges(cx),
5123 &[
5124 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5125 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5126 ]
5127 );
5128 });
5129
5130 view.update(cx, |view, cx| {
5131 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5132 assert_eq!(view.display_text(cx), "\n");
5133 assert_eq!(
5134 view.selected_display_ranges(cx),
5135 &[
5136 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5137 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5138 ]
5139 );
5140 });
5141 }
5142
5143 #[gpui::test]
5144 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5145 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5146 let settings = EditorSettings::test(&cx);
5147 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5148 view.update(cx, |view, cx| {
5149 view.select_display_ranges(
5150 &[
5151 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5152 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5153 ],
5154 cx,
5155 );
5156 });
5157
5158 view.update(cx, |view, cx| {
5159 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5160 assert_eq!(
5161 view.selected_display_ranges(cx),
5162 &[
5163 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5164 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5165 ]
5166 );
5167 });
5168
5169 view.update(cx, |view, cx| {
5170 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5171 assert_eq!(
5172 view.selected_display_ranges(cx),
5173 &[
5174 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5175 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5176 ]
5177 );
5178 });
5179
5180 view.update(cx, |view, cx| {
5181 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5182 assert_eq!(
5183 view.selected_display_ranges(cx),
5184 &[
5185 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5186 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5187 ]
5188 );
5189 });
5190
5191 view.update(cx, |view, cx| {
5192 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5193 assert_eq!(
5194 view.selected_display_ranges(cx),
5195 &[
5196 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5197 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5198 ]
5199 );
5200 });
5201
5202 view.update(cx, |view, cx| {
5203 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5204 assert_eq!(
5205 view.selected_display_ranges(cx),
5206 &[
5207 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5208 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5209 ]
5210 );
5211 });
5212
5213 view.update(cx, |view, cx| {
5214 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5215 assert_eq!(
5216 view.selected_display_ranges(cx),
5217 &[
5218 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5219 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5220 ]
5221 );
5222 });
5223
5224 view.update(cx, |view, cx| {
5225 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5226 assert_eq!(
5227 view.selected_display_ranges(cx),
5228 &[
5229 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5230 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5231 ]
5232 );
5233 });
5234
5235 view.update(cx, |view, cx| {
5236 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5237 assert_eq!(
5238 view.selected_display_ranges(cx),
5239 &[
5240 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5241 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5242 ]
5243 );
5244 });
5245
5246 view.update(cx, |view, cx| {
5247 view.move_right(&MoveRight, cx);
5248 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5249 assert_eq!(
5250 view.selected_display_ranges(cx),
5251 &[
5252 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5253 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5254 ]
5255 );
5256 });
5257
5258 view.update(cx, |view, cx| {
5259 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5260 assert_eq!(
5261 view.selected_display_ranges(cx),
5262 &[
5263 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5264 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5265 ]
5266 );
5267 });
5268
5269 view.update(cx, |view, cx| {
5270 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5271 assert_eq!(
5272 view.selected_display_ranges(cx),
5273 &[
5274 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5275 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5276 ]
5277 );
5278 });
5279 }
5280
5281 #[gpui::test]
5282 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5283 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5284 let settings = EditorSettings::test(&cx);
5285 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5286
5287 view.update(cx, |view, cx| {
5288 view.set_wrap_width(Some(140.), cx);
5289 assert_eq!(
5290 view.display_text(cx),
5291 "use one::{\n two::three::\n four::five\n};"
5292 );
5293
5294 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5295
5296 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5297 assert_eq!(
5298 view.selected_display_ranges(cx),
5299 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5300 );
5301
5302 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5303 assert_eq!(
5304 view.selected_display_ranges(cx),
5305 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5306 );
5307
5308 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5309 assert_eq!(
5310 view.selected_display_ranges(cx),
5311 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5312 );
5313
5314 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5315 assert_eq!(
5316 view.selected_display_ranges(cx),
5317 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5318 );
5319
5320 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5321 assert_eq!(
5322 view.selected_display_ranges(cx),
5323 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5324 );
5325
5326 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5327 assert_eq!(
5328 view.selected_display_ranges(cx),
5329 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5330 );
5331 });
5332 }
5333
5334 #[gpui::test]
5335 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5336 let buffer = MultiBuffer::build_simple("one two three four", cx);
5337 let settings = EditorSettings::test(&cx);
5338 let (_, view) = cx.add_window(Default::default(), |cx| {
5339 build_editor(buffer.clone(), settings, cx)
5340 });
5341
5342 view.update(cx, |view, cx| {
5343 view.select_display_ranges(
5344 &[
5345 // an empty selection - the preceding word fragment is deleted
5346 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5347 // characters selected - they are deleted
5348 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5349 ],
5350 cx,
5351 );
5352 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5353 });
5354
5355 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5356
5357 view.update(cx, |view, cx| {
5358 view.select_display_ranges(
5359 &[
5360 // an empty selection - the following word fragment is deleted
5361 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5362 // characters selected - they are deleted
5363 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
5364 ],
5365 cx,
5366 );
5367 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
5368 });
5369
5370 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
5371 }
5372
5373 #[gpui::test]
5374 fn test_newline(cx: &mut gpui::MutableAppContext) {
5375 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
5376 let settings = EditorSettings::test(&cx);
5377 let (_, view) = cx.add_window(Default::default(), |cx| {
5378 build_editor(buffer.clone(), settings, cx)
5379 });
5380
5381 view.update(cx, |view, cx| {
5382 view.select_display_ranges(
5383 &[
5384 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5385 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5386 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
5387 ],
5388 cx,
5389 );
5390
5391 view.newline(&Newline, cx);
5392 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
5393 });
5394 }
5395
5396 #[gpui::test]
5397 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
5398 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
5399 let settings = EditorSettings::test(&cx);
5400 let (_, view) = cx.add_window(Default::default(), |cx| {
5401 build_editor(buffer.clone(), settings, cx)
5402 });
5403
5404 view.update(cx, |view, cx| {
5405 // two selections on the same line
5406 view.select_display_ranges(
5407 &[
5408 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
5409 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
5410 ],
5411 cx,
5412 );
5413
5414 // indent from mid-tabstop to full tabstop
5415 view.tab(&Tab, cx);
5416 assert_eq!(view.text(cx), " one two\nthree\n four");
5417 assert_eq!(
5418 view.selected_display_ranges(cx),
5419 &[
5420 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5421 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
5422 ]
5423 );
5424
5425 // outdent from 1 tabstop to 0 tabstops
5426 view.outdent(&Outdent, cx);
5427 assert_eq!(view.text(cx), "one two\nthree\n four");
5428 assert_eq!(
5429 view.selected_display_ranges(cx),
5430 &[
5431 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
5432 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
5433 ]
5434 );
5435
5436 // select across line ending
5437 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
5438
5439 // indent and outdent affect only the preceding line
5440 view.tab(&Tab, cx);
5441 assert_eq!(view.text(cx), "one two\n three\n four");
5442 assert_eq!(
5443 view.selected_display_ranges(cx),
5444 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
5445 );
5446 view.outdent(&Outdent, cx);
5447 assert_eq!(view.text(cx), "one two\nthree\n four");
5448 assert_eq!(
5449 view.selected_display_ranges(cx),
5450 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
5451 );
5452
5453 // Ensure that indenting/outdenting works when the cursor is at column 0.
5454 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5455 view.tab(&Tab, cx);
5456 assert_eq!(view.text(cx), "one two\n three\n four");
5457 assert_eq!(
5458 view.selected_display_ranges(cx),
5459 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5460 );
5461
5462 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5463 view.outdent(&Outdent, cx);
5464 assert_eq!(view.text(cx), "one two\nthree\n four");
5465 assert_eq!(
5466 view.selected_display_ranges(cx),
5467 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5468 );
5469 });
5470 }
5471
5472 #[gpui::test]
5473 fn test_backspace(cx: &mut gpui::MutableAppContext) {
5474 let buffer =
5475 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5476 let settings = EditorSettings::test(&cx);
5477 let (_, view) = cx.add_window(Default::default(), |cx| {
5478 build_editor(buffer.clone(), settings, cx)
5479 });
5480
5481 view.update(cx, |view, cx| {
5482 view.select_display_ranges(
5483 &[
5484 // an empty selection - the preceding character is deleted
5485 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5486 // one character selected - it is deleted
5487 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5488 // a line suffix selected - it is deleted
5489 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5490 ],
5491 cx,
5492 );
5493 view.backspace(&Backspace, cx);
5494 });
5495
5496 assert_eq!(
5497 buffer.read(cx).read(cx).text(),
5498 "oe two three\nfou five six\nseven ten\n"
5499 );
5500 }
5501
5502 #[gpui::test]
5503 fn test_delete(cx: &mut gpui::MutableAppContext) {
5504 let buffer =
5505 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5506 let settings = EditorSettings::test(&cx);
5507 let (_, view) = cx.add_window(Default::default(), |cx| {
5508 build_editor(buffer.clone(), settings, cx)
5509 });
5510
5511 view.update(cx, |view, cx| {
5512 view.select_display_ranges(
5513 &[
5514 // an empty selection - the following character is deleted
5515 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5516 // one character selected - it is deleted
5517 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5518 // a line suffix selected - it is deleted
5519 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5520 ],
5521 cx,
5522 );
5523 view.delete(&Delete, cx);
5524 });
5525
5526 assert_eq!(
5527 buffer.read(cx).read(cx).text(),
5528 "on two three\nfou five six\nseven ten\n"
5529 );
5530 }
5531
5532 #[gpui::test]
5533 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5534 let settings = EditorSettings::test(&cx);
5535 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5536 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5537 view.update(cx, |view, cx| {
5538 view.select_display_ranges(
5539 &[
5540 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5541 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5542 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5543 ],
5544 cx,
5545 );
5546 view.delete_line(&DeleteLine, cx);
5547 assert_eq!(view.display_text(cx), "ghi");
5548 assert_eq!(
5549 view.selected_display_ranges(cx),
5550 vec![
5551 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5552 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5553 ]
5554 );
5555 });
5556
5557 let settings = EditorSettings::test(&cx);
5558 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5559 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5560 view.update(cx, |view, cx| {
5561 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
5562 view.delete_line(&DeleteLine, cx);
5563 assert_eq!(view.display_text(cx), "ghi\n");
5564 assert_eq!(
5565 view.selected_display_ranges(cx),
5566 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5567 );
5568 });
5569 }
5570
5571 #[gpui::test]
5572 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5573 let settings = EditorSettings::test(&cx);
5574 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5575 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5576 view.update(cx, |view, cx| {
5577 view.select_display_ranges(
5578 &[
5579 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5580 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5581 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5582 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5583 ],
5584 cx,
5585 );
5586 view.duplicate_line(&DuplicateLine, cx);
5587 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5588 assert_eq!(
5589 view.selected_display_ranges(cx),
5590 vec![
5591 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5592 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5593 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5594 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5595 ]
5596 );
5597 });
5598
5599 let settings = EditorSettings::test(&cx);
5600 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5601 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5602 view.update(cx, |view, cx| {
5603 view.select_display_ranges(
5604 &[
5605 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5606 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5607 ],
5608 cx,
5609 );
5610 view.duplicate_line(&DuplicateLine, cx);
5611 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5612 assert_eq!(
5613 view.selected_display_ranges(cx),
5614 vec![
5615 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5616 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5617 ]
5618 );
5619 });
5620 }
5621
5622 #[gpui::test]
5623 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5624 let settings = EditorSettings::test(&cx);
5625 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5626 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5627 view.update(cx, |view, cx| {
5628 view.fold_ranges(
5629 vec![
5630 Point::new(0, 2)..Point::new(1, 2),
5631 Point::new(2, 3)..Point::new(4, 1),
5632 Point::new(7, 0)..Point::new(8, 4),
5633 ],
5634 cx,
5635 );
5636 view.select_display_ranges(
5637 &[
5638 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5639 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5640 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5641 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5642 ],
5643 cx,
5644 );
5645 assert_eq!(
5646 view.display_text(cx),
5647 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5648 );
5649
5650 view.move_line_up(&MoveLineUp, cx);
5651 assert_eq!(
5652 view.display_text(cx),
5653 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5654 );
5655 assert_eq!(
5656 view.selected_display_ranges(cx),
5657 vec![
5658 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5659 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5660 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5661 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5662 ]
5663 );
5664 });
5665
5666 view.update(cx, |view, cx| {
5667 view.move_line_down(&MoveLineDown, cx);
5668 assert_eq!(
5669 view.display_text(cx),
5670 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5671 );
5672 assert_eq!(
5673 view.selected_display_ranges(cx),
5674 vec![
5675 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5676 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5677 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5678 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5679 ]
5680 );
5681 });
5682
5683 view.update(cx, |view, cx| {
5684 view.move_line_down(&MoveLineDown, cx);
5685 assert_eq!(
5686 view.display_text(cx),
5687 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5688 );
5689 assert_eq!(
5690 view.selected_display_ranges(cx),
5691 vec![
5692 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5693 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5694 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5695 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5696 ]
5697 );
5698 });
5699
5700 view.update(cx, |view, cx| {
5701 view.move_line_up(&MoveLineUp, cx);
5702 assert_eq!(
5703 view.display_text(cx),
5704 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5705 );
5706 assert_eq!(
5707 view.selected_display_ranges(cx),
5708 vec![
5709 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5710 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5711 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5712 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5713 ]
5714 );
5715 });
5716 }
5717
5718 #[gpui::test]
5719 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5720 let settings = EditorSettings::test(&cx);
5721 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5722 let snapshot = buffer.read(cx).snapshot(cx);
5723 let (_, editor) =
5724 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5725 editor.update(cx, |editor, cx| {
5726 editor.insert_blocks(
5727 [BlockProperties {
5728 position: snapshot.anchor_after(Point::new(2, 0)),
5729 disposition: BlockDisposition::Below,
5730 height: 1,
5731 render: Arc::new(|_| Empty::new().boxed()),
5732 }],
5733 cx,
5734 );
5735 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5736 editor.move_line_down(&MoveLineDown, cx);
5737 });
5738 }
5739
5740 #[gpui::test]
5741 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5742 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5743 let settings = EditorSettings::test(&cx);
5744 let view = cx
5745 .add_window(Default::default(), |cx| {
5746 build_editor(buffer.clone(), settings, cx)
5747 })
5748 .1;
5749
5750 // Cut with three selections. Clipboard text is divided into three slices.
5751 view.update(cx, |view, cx| {
5752 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5753 view.cut(&Cut, cx);
5754 assert_eq!(view.display_text(cx), "two four six ");
5755 });
5756
5757 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5758 view.update(cx, |view, cx| {
5759 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5760 view.paste(&Paste, cx);
5761 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5762 assert_eq!(
5763 view.selected_display_ranges(cx),
5764 &[
5765 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5766 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5767 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5768 ]
5769 );
5770 });
5771
5772 // Paste again but with only two cursors. Since the number of cursors doesn't
5773 // match the number of slices in the clipboard, the entire clipboard text
5774 // is pasted at each cursor.
5775 view.update(cx, |view, cx| {
5776 view.select_ranges(vec![0..0, 31..31], None, cx);
5777 view.handle_input(&Input("( ".into()), cx);
5778 view.paste(&Paste, cx);
5779 view.handle_input(&Input(") ".into()), cx);
5780 assert_eq!(
5781 view.display_text(cx),
5782 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5783 );
5784 });
5785
5786 view.update(cx, |view, cx| {
5787 view.select_ranges(vec![0..0], None, cx);
5788 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5789 assert_eq!(
5790 view.display_text(cx),
5791 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5792 );
5793 });
5794
5795 // Cut with three selections, one of which is full-line.
5796 view.update(cx, |view, cx| {
5797 view.select_display_ranges(
5798 &[
5799 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5800 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5801 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5802 ],
5803 cx,
5804 );
5805 view.cut(&Cut, cx);
5806 assert_eq!(
5807 view.display_text(cx),
5808 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5809 );
5810 });
5811
5812 // Paste with three selections, noticing how the copied selection that was full-line
5813 // gets inserted before the second cursor.
5814 view.update(cx, |view, cx| {
5815 view.select_display_ranges(
5816 &[
5817 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5818 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5819 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5820 ],
5821 cx,
5822 );
5823 view.paste(&Paste, cx);
5824 assert_eq!(
5825 view.display_text(cx),
5826 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5827 );
5828 assert_eq!(
5829 view.selected_display_ranges(cx),
5830 &[
5831 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5832 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5833 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5834 ]
5835 );
5836 });
5837
5838 // Copy with a single cursor only, which writes the whole line into the clipboard.
5839 view.update(cx, |view, cx| {
5840 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
5841 view.copy(&Copy, cx);
5842 });
5843
5844 // Paste with three selections, noticing how the copied full-line selection is inserted
5845 // before the empty selections but replaces the selection that is non-empty.
5846 view.update(cx, |view, cx| {
5847 view.select_display_ranges(
5848 &[
5849 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5850 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5851 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5852 ],
5853 cx,
5854 );
5855 view.paste(&Paste, cx);
5856 assert_eq!(
5857 view.display_text(cx),
5858 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5859 );
5860 assert_eq!(
5861 view.selected_display_ranges(cx),
5862 &[
5863 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5864 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5865 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5866 ]
5867 );
5868 });
5869 }
5870
5871 #[gpui::test]
5872 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5873 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5874 let settings = EditorSettings::test(&cx);
5875 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5876 view.update(cx, |view, cx| {
5877 view.select_all(&SelectAll, cx);
5878 assert_eq!(
5879 view.selected_display_ranges(cx),
5880 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5881 );
5882 });
5883 }
5884
5885 #[gpui::test]
5886 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5887 let settings = EditorSettings::test(&cx);
5888 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5889 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5890 view.update(cx, |view, cx| {
5891 view.select_display_ranges(
5892 &[
5893 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5894 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5895 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5896 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5897 ],
5898 cx,
5899 );
5900 view.select_line(&SelectLine, cx);
5901 assert_eq!(
5902 view.selected_display_ranges(cx),
5903 vec![
5904 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5905 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5906 ]
5907 );
5908 });
5909
5910 view.update(cx, |view, cx| {
5911 view.select_line(&SelectLine, cx);
5912 assert_eq!(
5913 view.selected_display_ranges(cx),
5914 vec![
5915 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5916 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5917 ]
5918 );
5919 });
5920
5921 view.update(cx, |view, cx| {
5922 view.select_line(&SelectLine, cx);
5923 assert_eq!(
5924 view.selected_display_ranges(cx),
5925 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5926 );
5927 });
5928 }
5929
5930 #[gpui::test]
5931 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5932 let settings = EditorSettings::test(&cx);
5933 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5934 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5935 view.update(cx, |view, cx| {
5936 view.fold_ranges(
5937 vec![
5938 Point::new(0, 2)..Point::new(1, 2),
5939 Point::new(2, 3)..Point::new(4, 1),
5940 Point::new(7, 0)..Point::new(8, 4),
5941 ],
5942 cx,
5943 );
5944 view.select_display_ranges(
5945 &[
5946 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5947 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5948 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5949 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5950 ],
5951 cx,
5952 );
5953 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5954 });
5955
5956 view.update(cx, |view, cx| {
5957 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5958 assert_eq!(
5959 view.display_text(cx),
5960 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5961 );
5962 assert_eq!(
5963 view.selected_display_ranges(cx),
5964 [
5965 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5966 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5967 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5968 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5969 ]
5970 );
5971 });
5972
5973 view.update(cx, |view, cx| {
5974 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
5975 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5976 assert_eq!(
5977 view.display_text(cx),
5978 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5979 );
5980 assert_eq!(
5981 view.selected_display_ranges(cx),
5982 [
5983 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5984 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5985 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5986 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5987 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5988 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5989 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5990 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5991 ]
5992 );
5993 });
5994 }
5995
5996 #[gpui::test]
5997 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5998 let settings = EditorSettings::test(&cx);
5999 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6000 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6001
6002 view.update(cx, |view, cx| {
6003 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6004 });
6005 view.update(cx, |view, cx| {
6006 view.add_selection_above(&AddSelectionAbove, cx);
6007 assert_eq!(
6008 view.selected_display_ranges(cx),
6009 vec![
6010 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6011 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6012 ]
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![
6021 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6022 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6023 ]
6024 );
6025 });
6026
6027 view.update(cx, |view, cx| {
6028 view.add_selection_below(&AddSelectionBelow, cx);
6029 assert_eq!(
6030 view.selected_display_ranges(cx),
6031 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6032 );
6033 });
6034
6035 view.update(cx, |view, cx| {
6036 view.add_selection_below(&AddSelectionBelow, cx);
6037 assert_eq!(
6038 view.selected_display_ranges(cx),
6039 vec![
6040 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6041 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6042 ]
6043 );
6044 });
6045
6046 view.update(cx, |view, cx| {
6047 view.add_selection_below(&AddSelectionBelow, cx);
6048 assert_eq!(
6049 view.selected_display_ranges(cx),
6050 vec![
6051 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6052 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6053 ]
6054 );
6055 });
6056
6057 view.update(cx, |view, cx| {
6058 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6059 });
6060 view.update(cx, |view, cx| {
6061 view.add_selection_below(&AddSelectionBelow, cx);
6062 assert_eq!(
6063 view.selected_display_ranges(cx),
6064 vec![
6065 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6066 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6067 ]
6068 );
6069 });
6070
6071 view.update(cx, |view, cx| {
6072 view.add_selection_below(&AddSelectionBelow, cx);
6073 assert_eq!(
6074 view.selected_display_ranges(cx),
6075 vec![
6076 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6077 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6078 ]
6079 );
6080 });
6081
6082 view.update(cx, |view, cx| {
6083 view.add_selection_above(&AddSelectionAbove, cx);
6084 assert_eq!(
6085 view.selected_display_ranges(cx),
6086 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6087 );
6088 });
6089
6090 view.update(cx, |view, cx| {
6091 view.add_selection_above(&AddSelectionAbove, cx);
6092 assert_eq!(
6093 view.selected_display_ranges(cx),
6094 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6095 );
6096 });
6097
6098 view.update(cx, |view, cx| {
6099 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6100 view.add_selection_below(&AddSelectionBelow, cx);
6101 assert_eq!(
6102 view.selected_display_ranges(cx),
6103 vec![
6104 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6105 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6106 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6107 ]
6108 );
6109 });
6110
6111 view.update(cx, |view, cx| {
6112 view.add_selection_below(&AddSelectionBelow, cx);
6113 assert_eq!(
6114 view.selected_display_ranges(cx),
6115 vec![
6116 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6117 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6118 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6119 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6120 ]
6121 );
6122 });
6123
6124 view.update(cx, |view, cx| {
6125 view.add_selection_above(&AddSelectionAbove, cx);
6126 assert_eq!(
6127 view.selected_display_ranges(cx),
6128 vec![
6129 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6130 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6131 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6132 ]
6133 );
6134 });
6135
6136 view.update(cx, |view, cx| {
6137 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6138 });
6139 view.update(cx, |view, cx| {
6140 view.add_selection_above(&AddSelectionAbove, cx);
6141 assert_eq!(
6142 view.selected_display_ranges(cx),
6143 vec![
6144 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6145 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6146 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6147 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6148 ]
6149 );
6150 });
6151
6152 view.update(cx, |view, cx| {
6153 view.add_selection_below(&AddSelectionBelow, cx);
6154 assert_eq!(
6155 view.selected_display_ranges(cx),
6156 vec![
6157 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6158 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6159 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6160 ]
6161 );
6162 });
6163 }
6164
6165 #[gpui::test]
6166 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6167 let settings = cx.read(EditorSettings::test);
6168 let language = Arc::new(Language::new(
6169 LanguageConfig::default(),
6170 Some(tree_sitter_rust::language()),
6171 ));
6172
6173 let text = r#"
6174 use mod1::mod2::{mod3, mod4};
6175
6176 fn fn_1(param1: bool, param2: &str) {
6177 let var1 = "text";
6178 }
6179 "#
6180 .unindent();
6181
6182 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6183 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6184 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6185 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6186 .await;
6187
6188 view.update(&mut cx, |view, cx| {
6189 view.select_display_ranges(
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 cx,
6196 );
6197 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6198 });
6199 assert_eq!(
6200 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6201 &[
6202 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6203 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6204 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6205 ]
6206 );
6207
6208 view.update(&mut cx, |view, cx| {
6209 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6210 });
6211 assert_eq!(
6212 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6213 &[
6214 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6215 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6216 ]
6217 );
6218
6219 view.update(&mut cx, |view, cx| {
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 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6225 );
6226
6227 // Trying to expand the selected syntax node one more time has no effect.
6228 view.update(&mut cx, |view, cx| {
6229 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6230 });
6231 assert_eq!(
6232 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6233 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6234 );
6235
6236 view.update(&mut cx, |view, cx| {
6237 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6238 });
6239 assert_eq!(
6240 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6241 &[
6242 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6243 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6244 ]
6245 );
6246
6247 view.update(&mut cx, |view, cx| {
6248 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6249 });
6250 assert_eq!(
6251 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6252 &[
6253 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6254 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6255 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6256 ]
6257 );
6258
6259 view.update(&mut cx, |view, cx| {
6260 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6261 });
6262 assert_eq!(
6263 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6264 &[
6265 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6266 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6267 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6268 ]
6269 );
6270
6271 // Trying to shrink the selected syntax node one more time has no effect.
6272 view.update(&mut cx, |view, cx| {
6273 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6274 });
6275 assert_eq!(
6276 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6277 &[
6278 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6279 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6280 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6281 ]
6282 );
6283
6284 // Ensure that we keep expanding the selection if the larger selection starts or ends within
6285 // a fold.
6286 view.update(&mut cx, |view, cx| {
6287 view.fold_ranges(
6288 vec![
6289 Point::new(0, 21)..Point::new(0, 24),
6290 Point::new(3, 20)..Point::new(3, 22),
6291 ],
6292 cx,
6293 );
6294 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6295 });
6296 assert_eq!(
6297 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6298 &[
6299 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6300 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6301 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
6302 ]
6303 );
6304 }
6305
6306 #[gpui::test]
6307 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
6308 let settings = cx.read(EditorSettings::test);
6309 let language = Arc::new(
6310 Language::new(
6311 LanguageConfig {
6312 brackets: vec![
6313 BracketPair {
6314 start: "{".to_string(),
6315 end: "}".to_string(),
6316 close: false,
6317 newline: true,
6318 },
6319 BracketPair {
6320 start: "(".to_string(),
6321 end: ")".to_string(),
6322 close: false,
6323 newline: true,
6324 },
6325 ],
6326 ..Default::default()
6327 },
6328 Some(tree_sitter_rust::language()),
6329 )
6330 .with_indents_query(
6331 r#"
6332 (_ "(" ")" @end) @indent
6333 (_ "{" "}" @end) @indent
6334 "#,
6335 )
6336 .unwrap(),
6337 );
6338
6339 let text = "fn a() {}";
6340
6341 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6342 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6343 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6344 editor
6345 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
6346 .await;
6347
6348 editor.update(&mut cx, |editor, cx| {
6349 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
6350 editor.newline(&Newline, cx);
6351 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
6352 assert_eq!(
6353 editor.selected_ranges(cx),
6354 &[
6355 Point::new(1, 4)..Point::new(1, 4),
6356 Point::new(3, 4)..Point::new(3, 4),
6357 Point::new(5, 0)..Point::new(5, 0)
6358 ]
6359 );
6360 });
6361 }
6362
6363 #[gpui::test]
6364 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
6365 let settings = cx.read(EditorSettings::test);
6366 let language = Arc::new(Language::new(
6367 LanguageConfig {
6368 brackets: vec![
6369 BracketPair {
6370 start: "{".to_string(),
6371 end: "}".to_string(),
6372 close: true,
6373 newline: true,
6374 },
6375 BracketPair {
6376 start: "/*".to_string(),
6377 end: " */".to_string(),
6378 close: true,
6379 newline: true,
6380 },
6381 ],
6382 ..Default::default()
6383 },
6384 Some(tree_sitter_rust::language()),
6385 ));
6386
6387 let text = r#"
6388 a
6389
6390 /
6391
6392 "#
6393 .unindent();
6394
6395 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6396 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6397 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6398 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6399 .await;
6400
6401 view.update(&mut cx, |view, cx| {
6402 view.select_display_ranges(
6403 &[
6404 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6405 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6406 ],
6407 cx,
6408 );
6409 view.handle_input(&Input("{".to_string()), cx);
6410 view.handle_input(&Input("{".to_string()), cx);
6411 view.handle_input(&Input("{".to_string()), cx);
6412 assert_eq!(
6413 view.text(cx),
6414 "
6415 {{{}}}
6416 {{{}}}
6417 /
6418
6419 "
6420 .unindent()
6421 );
6422
6423 view.move_right(&MoveRight, cx);
6424 view.handle_input(&Input("}".to_string()), cx);
6425 view.handle_input(&Input("}".to_string()), cx);
6426 view.handle_input(&Input("}".to_string()), cx);
6427 assert_eq!(
6428 view.text(cx),
6429 "
6430 {{{}}}}
6431 {{{}}}}
6432 /
6433
6434 "
6435 .unindent()
6436 );
6437
6438 view.undo(&Undo, cx);
6439 view.handle_input(&Input("/".to_string()), cx);
6440 view.handle_input(&Input("*".to_string()), cx);
6441 assert_eq!(
6442 view.text(cx),
6443 "
6444 /* */
6445 /* */
6446 /
6447
6448 "
6449 .unindent()
6450 );
6451
6452 view.undo(&Undo, cx);
6453 view.select_display_ranges(
6454 &[
6455 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6456 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6457 ],
6458 cx,
6459 );
6460 view.handle_input(&Input("*".to_string()), cx);
6461 assert_eq!(
6462 view.text(cx),
6463 "
6464 a
6465
6466 /*
6467 *
6468 "
6469 .unindent()
6470 );
6471 });
6472 }
6473
6474 #[gpui::test]
6475 async fn test_completion(mut cx: gpui::TestAppContext) {
6476 let settings = cx.read(EditorSettings::test);
6477 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
6478 lsp::ServerCapabilities {
6479 completion_provider: Some(lsp::CompletionOptions {
6480 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
6481 ..Default::default()
6482 }),
6483 ..Default::default()
6484 },
6485 cx.background(),
6486 )
6487 .await;
6488
6489 let text = "
6490 one
6491 two
6492 three
6493 "
6494 .unindent();
6495 let buffer = cx.add_model(|cx| {
6496 Buffer::from_file(
6497 0,
6498 text,
6499 Box::new(FakeFile {
6500 path: Arc::from(Path::new("/the/file")),
6501 }),
6502 cx,
6503 )
6504 .with_language_server(language_server, cx)
6505 });
6506 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6507
6508 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6509
6510 editor.update(&mut cx, |editor, cx| {
6511 editor.select_ranges([3..3], None, cx);
6512 editor.handle_input(&Input(".".to_string()), cx);
6513 });
6514
6515 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
6516 assert_eq!(
6517 params.text_document_position.text_document.uri,
6518 lsp::Url::from_file_path("/the/file").unwrap()
6519 );
6520 assert_eq!(
6521 params.text_document_position.position,
6522 lsp::Position::new(0, 4)
6523 );
6524
6525 fake.respond(
6526 id,
6527 Some(lsp::CompletionResponse::Array(vec![
6528 lsp::CompletionItem {
6529 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6530 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6531 new_text: "first_completion".to_string(),
6532 })),
6533 ..Default::default()
6534 },
6535 lsp::CompletionItem {
6536 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
6537 range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
6538 new_text: "second_completion".to_string(),
6539 })),
6540 ..Default::default()
6541 },
6542 ])),
6543 )
6544 .await;
6545
6546 editor.next_notification(&cx).await;
6547
6548 editor.update(&mut cx, |editor, cx| {
6549 editor.move_down(&MoveDown, cx);
6550 editor.confirm_completion(&ConfirmCompletion, cx);
6551 assert_eq!(
6552 editor.text(cx),
6553 "
6554 one.second_completion
6555 two
6556 three
6557 "
6558 .unindent()
6559 );
6560 });
6561 }
6562
6563 #[gpui::test]
6564 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
6565 let settings = cx.read(EditorSettings::test);
6566 let language = Arc::new(Language::new(
6567 LanguageConfig {
6568 line_comment: Some("// ".to_string()),
6569 ..Default::default()
6570 },
6571 Some(tree_sitter_rust::language()),
6572 ));
6573
6574 let text = "
6575 fn a() {
6576 //b();
6577 // c();
6578 // d();
6579 }
6580 "
6581 .unindent();
6582
6583 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6584 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6585 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6586
6587 view.update(&mut cx, |editor, cx| {
6588 // If multiple selections intersect a line, the line is only
6589 // toggled once.
6590 editor.select_display_ranges(
6591 &[
6592 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6593 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6594 ],
6595 cx,
6596 );
6597 editor.toggle_comments(&ToggleComments, cx);
6598 assert_eq!(
6599 editor.text(cx),
6600 "
6601 fn a() {
6602 b();
6603 c();
6604 d();
6605 }
6606 "
6607 .unindent()
6608 );
6609
6610 // The comment prefix is inserted at the same column for every line
6611 // in a selection.
6612 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
6613 editor.toggle_comments(&ToggleComments, cx);
6614 assert_eq!(
6615 editor.text(cx),
6616 "
6617 fn a() {
6618 // b();
6619 // c();
6620 // d();
6621 }
6622 "
6623 .unindent()
6624 );
6625
6626 // If a selection ends at the beginning of a line, that line is not toggled.
6627 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
6628 editor.toggle_comments(&ToggleComments, cx);
6629 assert_eq!(
6630 editor.text(cx),
6631 "
6632 fn a() {
6633 // b();
6634 c();
6635 // d();
6636 }
6637 "
6638 .unindent()
6639 );
6640 });
6641 }
6642
6643 #[gpui::test]
6644 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6645 let settings = EditorSettings::test(cx);
6646 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6647 let multibuffer = cx.add_model(|cx| {
6648 let mut multibuffer = MultiBuffer::new(0);
6649 multibuffer.push_excerpt(
6650 ExcerptProperties {
6651 buffer: &buffer,
6652 range: Point::new(0, 0)..Point::new(0, 4),
6653 },
6654 cx,
6655 );
6656 multibuffer.push_excerpt(
6657 ExcerptProperties {
6658 buffer: &buffer,
6659 range: Point::new(1, 0)..Point::new(1, 4),
6660 },
6661 cx,
6662 );
6663 multibuffer
6664 });
6665
6666 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6667
6668 let (_, view) = cx.add_window(Default::default(), |cx| {
6669 build_editor(multibuffer, settings, cx)
6670 });
6671 view.update(cx, |view, cx| {
6672 view.select_display_ranges(
6673 &[
6674 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6675 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6676 ],
6677 cx,
6678 );
6679
6680 view.handle_input(&Input("X".to_string()), cx);
6681 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6682 assert_eq!(
6683 view.selected_display_ranges(cx),
6684 &[
6685 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6686 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6687 ]
6688 )
6689 });
6690 }
6691
6692 #[gpui::test]
6693 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6694 let settings = EditorSettings::test(cx);
6695 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6696 let multibuffer = cx.add_model(|cx| {
6697 let mut multibuffer = MultiBuffer::new(0);
6698 multibuffer.push_excerpt(
6699 ExcerptProperties {
6700 buffer: &buffer,
6701 range: Point::new(0, 0)..Point::new(1, 4),
6702 },
6703 cx,
6704 );
6705 multibuffer.push_excerpt(
6706 ExcerptProperties {
6707 buffer: &buffer,
6708 range: Point::new(1, 0)..Point::new(2, 4),
6709 },
6710 cx,
6711 );
6712 multibuffer
6713 });
6714
6715 assert_eq!(
6716 multibuffer.read(cx).read(cx).text(),
6717 "aaaa\nbbbb\nbbbb\ncccc"
6718 );
6719
6720 let (_, view) = cx.add_window(Default::default(), |cx| {
6721 build_editor(multibuffer, settings, cx)
6722 });
6723 view.update(cx, |view, cx| {
6724 view.select_display_ranges(
6725 &[
6726 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6727 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6728 ],
6729 cx,
6730 );
6731
6732 view.handle_input(&Input("X".to_string()), cx);
6733 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6734 assert_eq!(
6735 view.selected_display_ranges(cx),
6736 &[
6737 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6738 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6739 ]
6740 );
6741
6742 view.newline(&Newline, cx);
6743 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
6744 assert_eq!(
6745 view.selected_display_ranges(cx),
6746 &[
6747 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6748 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6749 ]
6750 );
6751 });
6752 }
6753
6754 #[gpui::test]
6755 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
6756 let settings = EditorSettings::test(cx);
6757 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6758 let mut excerpt1_id = None;
6759 let multibuffer = cx.add_model(|cx| {
6760 let mut multibuffer = MultiBuffer::new(0);
6761 excerpt1_id = Some(multibuffer.push_excerpt(
6762 ExcerptProperties {
6763 buffer: &buffer,
6764 range: Point::new(0, 0)..Point::new(1, 4),
6765 },
6766 cx,
6767 ));
6768 multibuffer.push_excerpt(
6769 ExcerptProperties {
6770 buffer: &buffer,
6771 range: Point::new(1, 0)..Point::new(2, 4),
6772 },
6773 cx,
6774 );
6775 multibuffer
6776 });
6777 assert_eq!(
6778 multibuffer.read(cx).read(cx).text(),
6779 "aaaa\nbbbb\nbbbb\ncccc"
6780 );
6781 let (_, editor) = cx.add_window(Default::default(), |cx| {
6782 let mut editor = build_editor(multibuffer.clone(), settings, cx);
6783 editor.select_display_ranges(
6784 &[
6785 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6786 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6787 ],
6788 cx,
6789 );
6790 editor
6791 });
6792
6793 // Refreshing selections is a no-op when excerpts haven't changed.
6794 editor.update(cx, |editor, cx| {
6795 editor.refresh_selections(cx);
6796 assert_eq!(
6797 editor.selected_display_ranges(cx),
6798 [
6799 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6800 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6801 ]
6802 );
6803 });
6804
6805 multibuffer.update(cx, |multibuffer, cx| {
6806 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
6807 });
6808 editor.update(cx, |editor, cx| {
6809 // Removing an excerpt causes the first selection to become degenerate.
6810 assert_eq!(
6811 editor.selected_display_ranges(cx),
6812 [
6813 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6814 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6815 ]
6816 );
6817
6818 // Refreshing selections will relocate the first selection to the original buffer
6819 // location.
6820 editor.refresh_selections(cx);
6821 assert_eq!(
6822 editor.selected_display_ranges(cx),
6823 [
6824 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6825 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
6826 ]
6827 );
6828 });
6829 }
6830
6831 #[gpui::test]
6832 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6833 let settings = cx.read(EditorSettings::test);
6834 let language = Arc::new(Language::new(
6835 LanguageConfig {
6836 brackets: vec![
6837 BracketPair {
6838 start: "{".to_string(),
6839 end: "}".to_string(),
6840 close: true,
6841 newline: true,
6842 },
6843 BracketPair {
6844 start: "/* ".to_string(),
6845 end: " */".to_string(),
6846 close: true,
6847 newline: true,
6848 },
6849 ],
6850 ..Default::default()
6851 },
6852 Some(tree_sitter_rust::language()),
6853 ));
6854
6855 let text = concat!(
6856 "{ }\n", // Suppress rustfmt
6857 " x\n", //
6858 " /* */\n", //
6859 "x\n", //
6860 "{{} }\n", //
6861 );
6862
6863 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6864 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6865 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6866 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6867 .await;
6868
6869 view.update(&mut cx, |view, cx| {
6870 view.select_display_ranges(
6871 &[
6872 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6873 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6874 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6875 ],
6876 cx,
6877 );
6878 view.newline(&Newline, cx);
6879
6880 assert_eq!(
6881 view.buffer().read(cx).read(cx).text(),
6882 concat!(
6883 "{ \n", // Suppress rustfmt
6884 "\n", //
6885 "}\n", //
6886 " x\n", //
6887 " /* \n", //
6888 " \n", //
6889 " */\n", //
6890 "x\n", //
6891 "{{} \n", //
6892 "}\n", //
6893 )
6894 );
6895 });
6896 }
6897
6898 #[gpui::test]
6899 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
6900 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
6901 let settings = EditorSettings::test(&cx);
6902 let (_, editor) = cx.add_window(Default::default(), |cx| {
6903 build_editor(buffer.clone(), settings, cx)
6904 });
6905
6906 editor.update(cx, |editor, cx| {
6907 struct Type1;
6908 struct Type2;
6909
6910 let buffer = buffer.read(cx).snapshot(cx);
6911
6912 let anchor_range = |range: Range<Point>| {
6913 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
6914 };
6915
6916 editor.highlight_ranges::<Type1>(
6917 vec![
6918 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
6919 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
6920 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
6921 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
6922 ],
6923 Color::red(),
6924 cx,
6925 );
6926 editor.highlight_ranges::<Type2>(
6927 vec![
6928 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
6929 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
6930 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
6931 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
6932 ],
6933 Color::green(),
6934 cx,
6935 );
6936
6937 let snapshot = editor.snapshot(cx);
6938 assert_eq!(
6939 editor.highlighted_ranges_in_range(
6940 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
6941 &snapshot,
6942 ),
6943 &[
6944 (
6945 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
6946 Color::red(),
6947 ),
6948 (
6949 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
6950 Color::red(),
6951 ),
6952 (
6953 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
6954 Color::green(),
6955 ),
6956 (
6957 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
6958 Color::green(),
6959 ),
6960 ]
6961 );
6962 assert_eq!(
6963 editor.highlighted_ranges_in_range(
6964 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
6965 &snapshot,
6966 ),
6967 &[(
6968 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
6969 Color::red(),
6970 )]
6971 );
6972 });
6973 }
6974
6975 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6976 let point = DisplayPoint::new(row as u32, column as u32);
6977 point..point
6978 }
6979
6980 fn build_editor(
6981 buffer: ModelHandle<MultiBuffer>,
6982 settings: EditorSettings,
6983 cx: &mut ViewContext<Editor>,
6984 ) -> Editor {
6985 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6986 }
6987}
6988
6989trait RangeExt<T> {
6990 fn sorted(&self) -> Range<T>;
6991 fn to_inclusive(&self) -> RangeInclusive<T>;
6992}
6993
6994impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6995 fn sorted(&self) -> Self {
6996 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6997 }
6998
6999 fn to_inclusive(&self) -> RangeInclusive<T> {
7000 self.start.clone()..=self.end.clone()
7001 }
7002}