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 anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
28 MutableAppContext, RenderContext, Task, View, ViewContext, WeakModelHandle, WeakViewHandle,
29};
30use items::BufferItemHandle;
31use itertools::Itertools as _;
32use language::{
33 AnchorRangeExt as _, BracketPair, Buffer, Completion, CompletionLabel, Diagnostic,
34 DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId,
35};
36use multi_buffer::MultiBufferChunks;
37pub use multi_buffer::{
38 char_kind, Anchor, AnchorRangeExt, CharKind, ExcerptId, ExcerptProperties, MultiBuffer,
39 MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use postage::watch;
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::{DiagnosticStyle, EditorStyle};
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{ItemNavHistory, PathOpener, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordBoundary);
92action!(MoveToNextWordBoundary);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(ShowNextDiagnostic);
118action!(GoToDefinition);
119action!(PageUp);
120action!(PageDown);
121action!(Fold);
122action!(Unfold);
123action!(FoldSelectedRanges);
124action!(Scroll, Vector2F);
125action!(Select, SelectPhase);
126action!(ShowCompletions);
127action!(ShowCodeActions);
128action!(ConfirmCompletion, Option<usize>);
129
130pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
131 path_openers.push(Box::new(items::BufferOpener));
132 cx.add_bindings(vec![
133 Binding::new("escape", Cancel, Some("Editor")),
134 Binding::new("backspace", Backspace, Some("Editor")),
135 Binding::new("ctrl-h", Backspace, Some("Editor")),
136 Binding::new("delete", Delete, Some("Editor")),
137 Binding::new("ctrl-d", Delete, Some("Editor")),
138 Binding::new("enter", Newline, Some("Editor && mode == full")),
139 Binding::new(
140 "alt-enter",
141 Input("\n".into()),
142 Some("Editor && mode == auto_height"),
143 ),
144 Binding::new(
145 "enter",
146 ConfirmCompletion(None),
147 Some("Editor && completing"),
148 ),
149 Binding::new("tab", Tab, Some("Editor")),
150 Binding::new("tab", ConfirmCompletion(None), Some("Editor && completing")),
151 Binding::new("shift-tab", Outdent, Some("Editor")),
152 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
153 Binding::new(
154 "alt-backspace",
155 DeleteToPreviousWordBoundary,
156 Some("Editor"),
157 ),
158 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
159 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
160 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
161 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
162 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
163 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
164 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
165 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
166 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
167 Binding::new("cmd-x", Cut, Some("Editor")),
168 Binding::new("cmd-c", Copy, Some("Editor")),
169 Binding::new("cmd-v", Paste, Some("Editor")),
170 Binding::new("cmd-z", Undo, Some("Editor")),
171 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
172 Binding::new("up", MoveUp, Some("Editor")),
173 Binding::new("down", MoveDown, Some("Editor")),
174 Binding::new("left", MoveLeft, Some("Editor")),
175 Binding::new("right", MoveRight, Some("Editor")),
176 Binding::new("ctrl-p", MoveUp, Some("Editor")),
177 Binding::new("ctrl-n", MoveDown, Some("Editor")),
178 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
179 Binding::new("ctrl-f", MoveRight, Some("Editor")),
180 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
181 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
185 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
186 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
187 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
188 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
189 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
190 Binding::new("shift-up", SelectUp, Some("Editor")),
191 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
192 Binding::new("shift-down", SelectDown, Some("Editor")),
193 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
194 Binding::new("shift-left", SelectLeft, Some("Editor")),
195 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
196 Binding::new("shift-right", SelectRight, Some("Editor")),
197 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
198 Binding::new(
199 "alt-shift-left",
200 SelectToPreviousWordBoundary,
201 Some("Editor"),
202 ),
203 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
204 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
205 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
206 Binding::new(
207 "cmd-shift-left",
208 SelectToBeginningOfLine(true),
209 Some("Editor"),
210 ),
211 Binding::new(
212 "ctrl-shift-A",
213 SelectToBeginningOfLine(true),
214 Some("Editor"),
215 ),
216 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
217 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
218 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
219 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
220 Binding::new("cmd-a", SelectAll, Some("Editor")),
221 Binding::new("cmd-l", SelectLine, Some("Editor")),
222 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
223 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
224 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
225 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
226 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
227 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
228 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
229 Binding::new("cmd-/", ToggleComments, Some("Editor")),
230 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
231 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
232 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
233 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
234 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
235 Binding::new("f12", GoToDefinition, Some("Editor")),
236 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
237 Binding::new("pageup", PageUp, Some("Editor")),
238 Binding::new("pagedown", PageDown, Some("Editor")),
239 Binding::new("alt-cmd-[", Fold, Some("Editor")),
240 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
241 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
242 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
243 Binding::new("cmd-.", ShowCodeActions, Some("Editor")),
244 ]);
245
246 cx.add_action(Editor::open_new);
247 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
248 cx.add_action(Editor::select);
249 cx.add_action(Editor::cancel);
250 cx.add_action(Editor::handle_input);
251 cx.add_action(Editor::newline);
252 cx.add_action(Editor::backspace);
253 cx.add_action(Editor::delete);
254 cx.add_action(Editor::tab);
255 cx.add_action(Editor::outdent);
256 cx.add_action(Editor::delete_line);
257 cx.add_action(Editor::delete_to_previous_word_boundary);
258 cx.add_action(Editor::delete_to_next_word_boundary);
259 cx.add_action(Editor::delete_to_beginning_of_line);
260 cx.add_action(Editor::delete_to_end_of_line);
261 cx.add_action(Editor::cut_to_end_of_line);
262 cx.add_action(Editor::duplicate_line);
263 cx.add_action(Editor::move_line_up);
264 cx.add_action(Editor::move_line_down);
265 cx.add_action(Editor::cut);
266 cx.add_action(Editor::copy);
267 cx.add_action(Editor::paste);
268 cx.add_action(Editor::undo);
269 cx.add_action(Editor::redo);
270 cx.add_action(Editor::move_up);
271 cx.add_action(Editor::move_down);
272 cx.add_action(Editor::move_left);
273 cx.add_action(Editor::move_right);
274 cx.add_action(Editor::move_to_previous_word_boundary);
275 cx.add_action(Editor::move_to_next_word_boundary);
276 cx.add_action(Editor::move_to_beginning_of_line);
277 cx.add_action(Editor::move_to_end_of_line);
278 cx.add_action(Editor::move_to_beginning);
279 cx.add_action(Editor::move_to_end);
280 cx.add_action(Editor::select_up);
281 cx.add_action(Editor::select_down);
282 cx.add_action(Editor::select_left);
283 cx.add_action(Editor::select_right);
284 cx.add_action(Editor::select_to_previous_word_boundary);
285 cx.add_action(Editor::select_to_next_word_boundary);
286 cx.add_action(Editor::select_to_beginning_of_line);
287 cx.add_action(Editor::select_to_end_of_line);
288 cx.add_action(Editor::select_to_beginning);
289 cx.add_action(Editor::select_to_end);
290 cx.add_action(Editor::select_all);
291 cx.add_action(Editor::select_line);
292 cx.add_action(Editor::split_selection_into_lines);
293 cx.add_action(Editor::add_selection_above);
294 cx.add_action(Editor::add_selection_below);
295 cx.add_action(Editor::select_next);
296 cx.add_action(Editor::toggle_comments);
297 cx.add_action(Editor::select_larger_syntax_node);
298 cx.add_action(Editor::select_smaller_syntax_node);
299 cx.add_action(Editor::move_to_enclosing_bracket);
300 cx.add_action(Editor::show_next_diagnostic);
301 cx.add_action(Editor::go_to_definition);
302 cx.add_action(Editor::page_up);
303 cx.add_action(Editor::page_down);
304 cx.add_action(Editor::fold);
305 cx.add_action(Editor::unfold);
306 cx.add_action(Editor::fold_selected_ranges);
307 cx.add_action(Editor::show_completions);
308 cx.add_action(Editor::show_code_actions);
309 cx.add_action(
310 |editor: &mut Editor, &ConfirmCompletion(ix): &ConfirmCompletion, cx| {
311 if let Some(task) = editor.confirm_completion(ix, cx) {
312 task.detach_and_log_err(cx);
313 }
314 },
315 );
316}
317
318trait SelectionExt {
319 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
320 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
321 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
322 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
323 -> Range<u32>;
324}
325
326trait InvalidationRegion {
327 fn ranges(&self) -> &[Range<Anchor>];
328}
329
330#[derive(Clone, Debug)]
331pub enum SelectPhase {
332 Begin {
333 position: DisplayPoint,
334 add: bool,
335 click_count: usize,
336 },
337 BeginColumnar {
338 position: DisplayPoint,
339 overshoot: u32,
340 },
341 Extend {
342 position: DisplayPoint,
343 click_count: usize,
344 },
345 Update {
346 position: DisplayPoint,
347 overshoot: u32,
348 scroll_position: Vector2F,
349 },
350 End,
351}
352
353#[derive(Clone, Debug)]
354enum SelectMode {
355 Character,
356 Word(Range<Anchor>),
357 Line(Range<Anchor>),
358 All,
359}
360
361#[derive(PartialEq, Eq)]
362pub enum Autoscroll {
363 Fit,
364 Center,
365 Newest,
366}
367
368#[derive(Copy, Clone, PartialEq, Eq)]
369pub enum EditorMode {
370 SingleLine,
371 AutoHeight { max_lines: usize },
372 Full,
373}
374
375#[derive(Clone)]
376pub struct EditorSettings {
377 pub tab_size: usize,
378 pub soft_wrap: SoftWrap,
379 pub style: EditorStyle,
380}
381
382#[derive(Clone)]
383pub enum SoftWrap {
384 None,
385 EditorWidth,
386 Column(u32),
387}
388
389type CompletionId = usize;
390
391pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
392
393pub struct Editor {
394 handle: WeakViewHandle<Self>,
395 buffer: ModelHandle<MultiBuffer>,
396 display_map: ModelHandle<DisplayMap>,
397 next_selection_id: usize,
398 selections: Arc<[Selection<Anchor>]>,
399 pending_selection: Option<PendingSelection>,
400 columnar_selection_tail: Option<Anchor>,
401 add_selections_state: Option<AddSelectionsState>,
402 select_next_state: Option<SelectNextState>,
403 selection_history:
404 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
405 autoclose_stack: InvalidationStack<BracketPairState>,
406 snippet_stack: InvalidationStack<SnippetState>,
407 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
408 active_diagnostics: Option<ActiveDiagnosticGroup>,
409 scroll_position: Vector2F,
410 scroll_top_anchor: Option<Anchor>,
411 autoscroll_request: Option<Autoscroll>,
412 build_settings: BuildSettings,
413 focused: bool,
414 show_local_cursors: bool,
415 blink_epoch: usize,
416 blinking_paused: bool,
417 mode: EditorMode,
418 vertical_scroll_margin: f32,
419 placeholder_text: Option<Arc<str>>,
420 highlighted_rows: Option<Range<u32>>,
421 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
422 nav_history: Option<ItemNavHistory>,
423 context_menu: Option<ContextMenu>,
424 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
425 next_completion_id: CompletionId,
426}
427
428pub struct EditorSnapshot {
429 pub mode: EditorMode,
430 pub display_snapshot: DisplaySnapshot,
431 pub placeholder_text: Option<Arc<str>>,
432 is_focused: bool,
433 scroll_position: Vector2F,
434 scroll_top_anchor: Option<Anchor>,
435}
436
437struct PendingSelection {
438 selection: Selection<Anchor>,
439 mode: SelectMode,
440}
441
442struct AddSelectionsState {
443 above: bool,
444 stack: Vec<usize>,
445}
446
447struct SelectNextState {
448 query: AhoCorasick,
449 wordwise: bool,
450 done: bool,
451}
452
453struct BracketPairState {
454 ranges: Vec<Range<Anchor>>,
455 pair: BracketPair,
456}
457
458struct SnippetState {
459 ranges: Vec<Vec<Range<Anchor>>>,
460 active_index: usize,
461}
462
463struct InvalidationStack<T>(Vec<T>);
464
465enum ContextMenu {
466 Completion(CompletionMenu),
467}
468
469impl ContextMenu {
470 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
471 match self {
472 ContextMenu::Completion(menu) => menu.select_prev(cx),
473 }
474 }
475
476 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
477 match self {
478 ContextMenu::Completion(menu) => menu.select_next(cx),
479 }
480 }
481
482 fn should_render(&self) -> bool {
483 match self {
484 ContextMenu::Completion(menu) => menu.should_render(),
485 }
486 }
487
488 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
489 match self {
490 ContextMenu::Completion(menu) => menu.render(build_settings, cx),
491 }
492 }
493}
494
495struct CompletionMenu {
496 id: CompletionId,
497 initial_position: Anchor,
498 completions: Arc<[Completion<Anchor>]>,
499 match_candidates: Vec<StringMatchCandidate>,
500 matches: Arc<[StringMatch]>,
501 selected_item: usize,
502 list: UniformListState,
503}
504
505impl CompletionMenu {
506 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
507 if self.selected_item > 0 {
508 self.selected_item -= 1;
509 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
510 }
511 cx.notify();
512 }
513
514 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
515 if self.selected_item + 1 < self.matches.len() {
516 self.selected_item += 1;
517 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
518 }
519 cx.notify();
520 }
521
522 fn should_render(&self) -> bool {
523 !self.matches.is_empty()
524 }
525
526 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
527 enum CompletionTag {}
528
529 let settings = build_settings(cx);
530 let completions = self.completions.clone();
531 let matches = self.matches.clone();
532 let selected_item = self.selected_item;
533 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
534 let settings = build_settings(cx);
535 let start_ix = range.start;
536 for (ix, mat) in matches[range].iter().enumerate() {
537 let completion = &completions[mat.candidate_id];
538 let item_ix = start_ix + ix;
539 items.push(
540 MouseEventHandler::new::<CompletionTag, _, _, _>(
541 mat.candidate_id,
542 cx,
543 |state, _| {
544 let item_style = if item_ix == selected_item {
545 settings.style.autocomplete.selected_item
546 } else if state.hovered {
547 settings.style.autocomplete.hovered_item
548 } else {
549 settings.style.autocomplete.item
550 };
551
552 Text::new(completion.label.text.clone(), settings.style.text.clone())
553 .with_soft_wrap(false)
554 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
555 &completion.label.text,
556 settings.style.text.color.into(),
557 styled_runs_for_completion_label(
558 &completion.label,
559 settings.style.text.color,
560 &settings.style.syntax,
561 ),
562 &mat.positions,
563 ))
564 .contained()
565 .with_style(item_style)
566 .boxed()
567 },
568 )
569 .with_cursor_style(CursorStyle::PointingHand)
570 .on_mouse_down(move |cx| {
571 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
572 })
573 .boxed(),
574 );
575 }
576 })
577 .with_width_from_item(
578 self.matches
579 .iter()
580 .enumerate()
581 .max_by_key(|(_, mat)| {
582 self.completions[mat.candidate_id]
583 .label
584 .text
585 .chars()
586 .count()
587 })
588 .map(|(ix, _)| ix),
589 )
590 .contained()
591 .with_style(settings.style.autocomplete.container)
592 .boxed()
593 }
594
595 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
596 let mut matches = if let Some(query) = query {
597 fuzzy::match_strings(
598 &self.match_candidates,
599 query,
600 false,
601 100,
602 &Default::default(),
603 executor,
604 )
605 .await
606 } else {
607 self.match_candidates
608 .iter()
609 .enumerate()
610 .map(|(candidate_id, candidate)| StringMatch {
611 candidate_id,
612 score: Default::default(),
613 positions: Default::default(),
614 string: candidate.string.clone(),
615 })
616 .collect()
617 };
618 matches.sort_unstable_by_key(|mat| {
619 (
620 Reverse(OrderedFloat(mat.score)),
621 self.completions[mat.candidate_id].sort_key(),
622 )
623 });
624
625 for mat in &mut matches {
626 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
627 for position in &mut mat.positions {
628 *position += filter_start;
629 }
630 }
631
632 self.matches = matches.into();
633 }
634}
635
636#[derive(Debug)]
637struct ActiveDiagnosticGroup {
638 primary_range: Range<Anchor>,
639 primary_message: String,
640 blocks: HashMap<BlockId, Diagnostic>,
641 is_valid: bool,
642}
643
644#[derive(Serialize, Deserialize)]
645struct ClipboardSelection {
646 len: usize,
647 is_entire_line: bool,
648}
649
650pub struct NavigationData {
651 anchor: Anchor,
652 offset: usize,
653}
654
655impl Editor {
656 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
657 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
658 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
659 let mut view = Self::for_buffer(buffer, build_settings, cx);
660 view.mode = EditorMode::SingleLine;
661 view
662 }
663
664 pub fn auto_height(
665 max_lines: usize,
666 build_settings: BuildSettings,
667 cx: &mut ViewContext<Self>,
668 ) -> Self {
669 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
670 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
671 let mut view = Self::for_buffer(buffer, build_settings, cx);
672 view.mode = EditorMode::AutoHeight { max_lines };
673 view
674 }
675
676 pub fn for_buffer(
677 buffer: ModelHandle<MultiBuffer>,
678 build_settings: BuildSettings,
679 cx: &mut ViewContext<Self>,
680 ) -> Self {
681 Self::new(buffer, build_settings, cx)
682 }
683
684 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
685 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
686 clone.scroll_position = self.scroll_position;
687 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
688 clone.nav_history = self
689 .nav_history
690 .as_ref()
691 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
692 clone
693 }
694
695 pub fn new(
696 buffer: ModelHandle<MultiBuffer>,
697 build_settings: BuildSettings,
698 cx: &mut ViewContext<Self>,
699 ) -> Self {
700 let settings = build_settings(cx);
701 let display_map = cx.add_model(|cx| {
702 DisplayMap::new(
703 buffer.clone(),
704 settings.tab_size,
705 settings.style.text.font_id,
706 settings.style.text.font_size,
707 None,
708 cx,
709 )
710 });
711 cx.observe(&buffer, Self::on_buffer_changed).detach();
712 cx.subscribe(&buffer, Self::on_buffer_event).detach();
713 cx.observe(&display_map, Self::on_display_map_changed)
714 .detach();
715
716 let mut this = Self {
717 handle: cx.weak_handle(),
718 buffer,
719 display_map,
720 selections: Arc::from([]),
721 pending_selection: None,
722 columnar_selection_tail: None,
723 next_selection_id: 0,
724 add_selections_state: None,
725 select_next_state: None,
726 selection_history: Default::default(),
727 autoclose_stack: Default::default(),
728 snippet_stack: Default::default(),
729 select_larger_syntax_node_stack: Vec::new(),
730 active_diagnostics: None,
731 build_settings,
732 scroll_position: Vector2F::zero(),
733 scroll_top_anchor: None,
734 autoscroll_request: None,
735 focused: false,
736 show_local_cursors: false,
737 blink_epoch: 0,
738 blinking_paused: false,
739 mode: EditorMode::Full,
740 vertical_scroll_margin: 3.0,
741 placeholder_text: None,
742 highlighted_rows: None,
743 highlighted_ranges: Default::default(),
744 nav_history: None,
745 context_menu: None,
746 completion_tasks: Default::default(),
747 next_completion_id: 0,
748 };
749 let selection = Selection {
750 id: post_inc(&mut this.next_selection_id),
751 start: 0,
752 end: 0,
753 reversed: false,
754 goal: SelectionGoal::None,
755 };
756 this.update_selections(vec![selection], None, cx);
757 this
758 }
759
760 pub fn open_new(
761 workspace: &mut Workspace,
762 _: &workspace::OpenNew,
763 cx: &mut ViewContext<Workspace>,
764 ) {
765 let buffer = cx
766 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
767 workspace.open_item(BufferItemHandle(buffer), cx);
768 }
769
770 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
771 self.buffer.read(cx).replica_id()
772 }
773
774 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
775 &self.buffer
776 }
777
778 pub fn title(&self, cx: &AppContext) -> String {
779 let filename = self
780 .buffer()
781 .read(cx)
782 .file(cx)
783 .map(|file| file.file_name(cx));
784 if let Some(name) = filename {
785 name.to_string_lossy().into()
786 } else {
787 "untitled".into()
788 }
789 }
790
791 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
792 EditorSnapshot {
793 mode: self.mode,
794 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
795 scroll_position: self.scroll_position,
796 scroll_top_anchor: self.scroll_top_anchor.clone(),
797 placeholder_text: self.placeholder_text.clone(),
798 is_focused: self
799 .handle
800 .upgrade(cx)
801 .map_or(false, |handle| handle.is_focused(cx)),
802 }
803 }
804
805 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
806 self.buffer.read(cx).language(cx)
807 }
808
809 pub fn set_placeholder_text(
810 &mut self,
811 placeholder_text: impl Into<Arc<str>>,
812 cx: &mut ViewContext<Self>,
813 ) {
814 self.placeholder_text = Some(placeholder_text.into());
815 cx.notify();
816 }
817
818 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
819 self.vertical_scroll_margin = margin_rows as f32;
820 cx.notify();
821 }
822
823 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
824 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
825
826 if scroll_position.y() == 0. {
827 self.scroll_top_anchor = None;
828 self.scroll_position = scroll_position;
829 } else {
830 let scroll_top_buffer_offset =
831 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
832 let anchor = map
833 .buffer_snapshot
834 .anchor_at(scroll_top_buffer_offset, Bias::Right);
835 self.scroll_position = vec2f(
836 scroll_position.x(),
837 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
838 );
839 self.scroll_top_anchor = Some(anchor);
840 }
841
842 cx.notify();
843 }
844
845 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
846 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
847 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
848 }
849
850 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
851 if max < self.scroll_position.x() {
852 self.scroll_position.set_x(max);
853 true
854 } else {
855 false
856 }
857 }
858
859 pub fn autoscroll_vertically(
860 &mut self,
861 viewport_height: f32,
862 line_height: f32,
863 cx: &mut ViewContext<Self>,
864 ) -> bool {
865 let visible_lines = viewport_height / line_height;
866 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
867 let mut scroll_position =
868 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
869 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
870 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
871 } else {
872 display_map.max_point().row().saturating_sub(1) as f32
873 };
874 if scroll_position.y() > max_scroll_top {
875 scroll_position.set_y(max_scroll_top);
876 self.set_scroll_position(scroll_position, cx);
877 }
878
879 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
880 autoscroll
881 } else {
882 return false;
883 };
884
885 let first_cursor_top;
886 let last_cursor_bottom;
887 if let Some(highlighted_rows) = &self.highlighted_rows {
888 first_cursor_top = highlighted_rows.start as f32;
889 last_cursor_bottom = first_cursor_top + 1.;
890 } else if autoscroll == Autoscroll::Newest {
891 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
892 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
893 last_cursor_bottom = first_cursor_top + 1.;
894 } else {
895 let selections = self.local_selections::<Point>(cx);
896 first_cursor_top = selections
897 .first()
898 .unwrap()
899 .head()
900 .to_display_point(&display_map)
901 .row() as f32;
902 last_cursor_bottom = selections
903 .last()
904 .unwrap()
905 .head()
906 .to_display_point(&display_map)
907 .row() as f32
908 + 1.0;
909 }
910
911 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
912 0.
913 } else {
914 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
915 };
916 if margin < 0.0 {
917 return false;
918 }
919
920 match autoscroll {
921 Autoscroll::Fit | Autoscroll::Newest => {
922 let margin = margin.min(self.vertical_scroll_margin);
923 let target_top = (first_cursor_top - margin).max(0.0);
924 let target_bottom = last_cursor_bottom + margin;
925 let start_row = scroll_position.y();
926 let end_row = start_row + visible_lines;
927
928 if target_top < start_row {
929 scroll_position.set_y(target_top);
930 self.set_scroll_position(scroll_position, cx);
931 } else if target_bottom >= end_row {
932 scroll_position.set_y(target_bottom - visible_lines);
933 self.set_scroll_position(scroll_position, cx);
934 }
935 }
936 Autoscroll::Center => {
937 scroll_position.set_y((first_cursor_top - margin).max(0.0));
938 self.set_scroll_position(scroll_position, cx);
939 }
940 }
941
942 true
943 }
944
945 pub fn autoscroll_horizontally(
946 &mut self,
947 start_row: u32,
948 viewport_width: f32,
949 scroll_width: f32,
950 max_glyph_width: f32,
951 layouts: &[text_layout::Line],
952 cx: &mut ViewContext<Self>,
953 ) -> bool {
954 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
955 let selections = self.local_selections::<Point>(cx);
956
957 let mut target_left;
958 let mut target_right;
959
960 if self.highlighted_rows.is_some() {
961 target_left = 0.0_f32;
962 target_right = 0.0_f32;
963 } else {
964 target_left = std::f32::INFINITY;
965 target_right = 0.0_f32;
966 for selection in selections {
967 let head = selection.head().to_display_point(&display_map);
968 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
969 let start_column = head.column().saturating_sub(3);
970 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
971 target_left = target_left.min(
972 layouts[(head.row() - start_row) as usize]
973 .x_for_index(start_column as usize),
974 );
975 target_right = target_right.max(
976 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
977 + max_glyph_width,
978 );
979 }
980 }
981 }
982
983 target_right = target_right.min(scroll_width);
984
985 if target_right - target_left > viewport_width {
986 return false;
987 }
988
989 let scroll_left = self.scroll_position.x() * max_glyph_width;
990 let scroll_right = scroll_left + viewport_width;
991
992 if target_left < scroll_left {
993 self.scroll_position.set_x(target_left / max_glyph_width);
994 true
995 } else if target_right > scroll_right {
996 self.scroll_position
997 .set_x((target_right - viewport_width) / max_glyph_width);
998 true
999 } else {
1000 false
1001 }
1002 }
1003
1004 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1005 self.hide_completions(cx);
1006
1007 match phase {
1008 SelectPhase::Begin {
1009 position,
1010 add,
1011 click_count,
1012 } => self.begin_selection(*position, *add, *click_count, cx),
1013 SelectPhase::BeginColumnar {
1014 position,
1015 overshoot,
1016 } => self.begin_columnar_selection(*position, *overshoot, cx),
1017 SelectPhase::Extend {
1018 position,
1019 click_count,
1020 } => self.extend_selection(*position, *click_count, cx),
1021 SelectPhase::Update {
1022 position,
1023 overshoot,
1024 scroll_position,
1025 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1026 SelectPhase::End => self.end_selection(cx),
1027 }
1028 }
1029
1030 fn extend_selection(
1031 &mut self,
1032 position: DisplayPoint,
1033 click_count: usize,
1034 cx: &mut ViewContext<Self>,
1035 ) {
1036 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1037 let tail = self
1038 .newest_selection::<usize>(&display_map.buffer_snapshot)
1039 .tail();
1040 self.begin_selection(position, false, click_count, cx);
1041
1042 let position = position.to_offset(&display_map, Bias::Left);
1043 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1044 let pending = self.pending_selection.as_mut().unwrap();
1045
1046 if position >= tail {
1047 pending.selection.start = tail_anchor.clone();
1048 } else {
1049 pending.selection.end = tail_anchor.clone();
1050 pending.selection.reversed = true;
1051 }
1052
1053 match &mut pending.mode {
1054 SelectMode::Word(range) | SelectMode::Line(range) => {
1055 *range = tail_anchor.clone()..tail_anchor
1056 }
1057 _ => {}
1058 }
1059 }
1060
1061 fn begin_selection(
1062 &mut self,
1063 position: DisplayPoint,
1064 add: bool,
1065 click_count: usize,
1066 cx: &mut ViewContext<Self>,
1067 ) {
1068 if !self.focused {
1069 cx.focus_self();
1070 cx.emit(Event::Activate);
1071 }
1072
1073 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1074 let buffer = &display_map.buffer_snapshot;
1075 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1076
1077 let start;
1078 let end;
1079 let mode;
1080 match click_count {
1081 1 => {
1082 start = buffer.anchor_before(position.to_point(&display_map));
1083 end = start.clone();
1084 mode = SelectMode::Character;
1085 }
1086 2 => {
1087 let range = movement::surrounding_word(&display_map, position);
1088 start = buffer.anchor_before(range.start.to_point(&display_map));
1089 end = buffer.anchor_before(range.end.to_point(&display_map));
1090 mode = SelectMode::Word(start.clone()..end.clone());
1091 }
1092 3 => {
1093 let position = display_map
1094 .clip_point(position, Bias::Left)
1095 .to_point(&display_map);
1096 let line_start = display_map.prev_line_boundary(position).0;
1097 let next_line_start = buffer.clip_point(
1098 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1099 Bias::Left,
1100 );
1101 start = buffer.anchor_before(line_start);
1102 end = buffer.anchor_before(next_line_start);
1103 mode = SelectMode::Line(start.clone()..end.clone());
1104 }
1105 _ => {
1106 start = buffer.anchor_before(0);
1107 end = buffer.anchor_before(buffer.len());
1108 mode = SelectMode::All;
1109 }
1110 }
1111
1112 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1113
1114 let selection = Selection {
1115 id: post_inc(&mut self.next_selection_id),
1116 start,
1117 end,
1118 reversed: false,
1119 goal: SelectionGoal::None,
1120 };
1121
1122 if !add {
1123 self.update_selections::<usize>(Vec::new(), None, cx);
1124 } else if click_count > 1 {
1125 // Remove the newest selection since it was only added as part of this multi-click.
1126 let mut selections = self.local_selections(cx);
1127 selections.retain(|selection| selection.id != newest_selection.id);
1128 self.update_selections::<usize>(selections, None, cx)
1129 }
1130
1131 self.pending_selection = Some(PendingSelection { selection, mode });
1132
1133 cx.notify();
1134 }
1135
1136 fn begin_columnar_selection(
1137 &mut self,
1138 position: DisplayPoint,
1139 overshoot: u32,
1140 cx: &mut ViewContext<Self>,
1141 ) {
1142 if !self.focused {
1143 cx.focus_self();
1144 cx.emit(Event::Activate);
1145 }
1146
1147 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1148 let tail = self
1149 .newest_selection::<Point>(&display_map.buffer_snapshot)
1150 .tail();
1151 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1152
1153 self.select_columns(
1154 tail.to_display_point(&display_map),
1155 position,
1156 overshoot,
1157 &display_map,
1158 cx,
1159 );
1160 }
1161
1162 fn update_selection(
1163 &mut self,
1164 position: DisplayPoint,
1165 overshoot: u32,
1166 scroll_position: Vector2F,
1167 cx: &mut ViewContext<Self>,
1168 ) {
1169 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1170
1171 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1172 let tail = tail.to_display_point(&display_map);
1173 self.select_columns(tail, position, overshoot, &display_map, cx);
1174 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1175 let buffer = self.buffer.read(cx).snapshot(cx);
1176 let head;
1177 let tail;
1178 match mode {
1179 SelectMode::Character => {
1180 head = position.to_point(&display_map);
1181 tail = selection.tail().to_point(&buffer);
1182 }
1183 SelectMode::Word(original_range) => {
1184 let original_display_range = original_range.start.to_display_point(&display_map)
1185 ..original_range.end.to_display_point(&display_map);
1186 let original_buffer_range = original_display_range.start.to_point(&display_map)
1187 ..original_display_range.end.to_point(&display_map);
1188 if movement::is_inside_word(&display_map, position)
1189 || original_display_range.contains(&position)
1190 {
1191 let word_range = movement::surrounding_word(&display_map, position);
1192 if word_range.start < original_display_range.start {
1193 head = word_range.start.to_point(&display_map);
1194 } else {
1195 head = word_range.end.to_point(&display_map);
1196 }
1197 } else {
1198 head = position.to_point(&display_map);
1199 }
1200
1201 if head <= original_buffer_range.start {
1202 tail = original_buffer_range.end;
1203 } else {
1204 tail = original_buffer_range.start;
1205 }
1206 }
1207 SelectMode::Line(original_range) => {
1208 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1209
1210 let position = display_map
1211 .clip_point(position, Bias::Left)
1212 .to_point(&display_map);
1213 let line_start = display_map.prev_line_boundary(position).0;
1214 let next_line_start = buffer.clip_point(
1215 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1216 Bias::Left,
1217 );
1218
1219 if line_start < original_range.start {
1220 head = line_start
1221 } else {
1222 head = next_line_start
1223 }
1224
1225 if head <= original_range.start {
1226 tail = original_range.end;
1227 } else {
1228 tail = original_range.start;
1229 }
1230 }
1231 SelectMode::All => {
1232 return;
1233 }
1234 };
1235
1236 if head < tail {
1237 selection.start = buffer.anchor_before(head);
1238 selection.end = buffer.anchor_before(tail);
1239 selection.reversed = true;
1240 } else {
1241 selection.start = buffer.anchor_before(tail);
1242 selection.end = buffer.anchor_before(head);
1243 selection.reversed = false;
1244 }
1245 } else {
1246 log::error!("update_selection dispatched with no pending selection");
1247 return;
1248 }
1249
1250 self.set_scroll_position(scroll_position, cx);
1251 cx.notify();
1252 }
1253
1254 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1255 self.columnar_selection_tail.take();
1256 if self.pending_selection.is_some() {
1257 let selections = self.local_selections::<usize>(cx);
1258 self.update_selections(selections, None, cx);
1259 }
1260 }
1261
1262 fn select_columns(
1263 &mut self,
1264 tail: DisplayPoint,
1265 head: DisplayPoint,
1266 overshoot: u32,
1267 display_map: &DisplaySnapshot,
1268 cx: &mut ViewContext<Self>,
1269 ) {
1270 let start_row = cmp::min(tail.row(), head.row());
1271 let end_row = cmp::max(tail.row(), head.row());
1272 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1273 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1274 let reversed = start_column < tail.column();
1275
1276 let selections = (start_row..=end_row)
1277 .filter_map(|row| {
1278 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1279 let start = display_map
1280 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1281 .to_point(&display_map);
1282 let end = display_map
1283 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1284 .to_point(&display_map);
1285 Some(Selection {
1286 id: post_inc(&mut self.next_selection_id),
1287 start,
1288 end,
1289 reversed,
1290 goal: SelectionGoal::None,
1291 })
1292 } else {
1293 None
1294 }
1295 })
1296 .collect::<Vec<_>>();
1297
1298 self.update_selections(selections, None, cx);
1299 cx.notify();
1300 }
1301
1302 pub fn is_selecting(&self) -> bool {
1303 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1304 }
1305
1306 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1307 if self.hide_completions(cx).is_some() {
1308 return;
1309 }
1310
1311 if self.snippet_stack.pop().is_some() {
1312 return;
1313 }
1314
1315 if self.mode != EditorMode::Full {
1316 cx.propagate_action();
1317 return;
1318 }
1319
1320 if self.active_diagnostics.is_some() {
1321 self.dismiss_diagnostics(cx);
1322 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1323 let buffer = self.buffer.read(cx).snapshot(cx);
1324 let selection = Selection {
1325 id: selection.id,
1326 start: selection.start.to_point(&buffer),
1327 end: selection.end.to_point(&buffer),
1328 reversed: selection.reversed,
1329 goal: selection.goal,
1330 };
1331 if self.local_selections::<Point>(cx).is_empty() {
1332 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1333 }
1334 } else {
1335 let buffer = self.buffer.read(cx).snapshot(cx);
1336 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1337 if self.selection_count() == 1 {
1338 if oldest_selection.is_empty() {
1339 cx.propagate_action();
1340 return;
1341 }
1342
1343 oldest_selection.start = oldest_selection.head().clone();
1344 oldest_selection.end = oldest_selection.head().clone();
1345 }
1346 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1347 }
1348 }
1349
1350 #[cfg(any(test, feature = "test-support"))]
1351 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1352 &self,
1353 cx: &mut MutableAppContext,
1354 ) -> Vec<Range<D>> {
1355 self.local_selections::<D>(cx)
1356 .iter()
1357 .map(|s| {
1358 if s.reversed {
1359 s.end.clone()..s.start.clone()
1360 } else {
1361 s.start.clone()..s.end.clone()
1362 }
1363 })
1364 .collect()
1365 }
1366
1367 #[cfg(any(test, feature = "test-support"))]
1368 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1369 let display_map = self
1370 .display_map
1371 .update(cx, |display_map, cx| display_map.snapshot(cx));
1372 self.selections
1373 .iter()
1374 .chain(
1375 self.pending_selection
1376 .as_ref()
1377 .map(|pending| &pending.selection),
1378 )
1379 .map(|s| {
1380 if s.reversed {
1381 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1382 } else {
1383 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1384 }
1385 })
1386 .collect()
1387 }
1388
1389 pub fn select_ranges<I, T>(
1390 &mut self,
1391 ranges: I,
1392 autoscroll: Option<Autoscroll>,
1393 cx: &mut ViewContext<Self>,
1394 ) where
1395 I: IntoIterator<Item = Range<T>>,
1396 T: ToOffset,
1397 {
1398 let buffer = self.buffer.read(cx).snapshot(cx);
1399 let selections = ranges
1400 .into_iter()
1401 .map(|range| {
1402 let mut start = range.start.to_offset(&buffer);
1403 let mut end = range.end.to_offset(&buffer);
1404 let reversed = if start > end {
1405 mem::swap(&mut start, &mut end);
1406 true
1407 } else {
1408 false
1409 };
1410 Selection {
1411 id: post_inc(&mut self.next_selection_id),
1412 start,
1413 end,
1414 reversed,
1415 goal: SelectionGoal::None,
1416 }
1417 })
1418 .collect::<Vec<_>>();
1419 self.update_selections(selections, autoscroll, cx);
1420 }
1421
1422 #[cfg(any(test, feature = "test-support"))]
1423 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1424 where
1425 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1426 {
1427 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1428 let selections = ranges
1429 .into_iter()
1430 .map(|range| {
1431 let mut start = range.start;
1432 let mut end = range.end;
1433 let reversed = if start > end {
1434 mem::swap(&mut start, &mut end);
1435 true
1436 } else {
1437 false
1438 };
1439 Selection {
1440 id: post_inc(&mut self.next_selection_id),
1441 start: start.to_point(&display_map),
1442 end: end.to_point(&display_map),
1443 reversed,
1444 goal: SelectionGoal::None,
1445 }
1446 })
1447 .collect();
1448 self.update_selections(selections, None, cx);
1449 }
1450
1451 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1452 let text = action.0.as_ref();
1453 if !self.skip_autoclose_end(text, cx) {
1454 self.start_transaction(cx);
1455 self.insert(text, cx);
1456 self.autoclose_pairs(cx);
1457 self.end_transaction(cx);
1458 self.trigger_completion_on_input(text, cx);
1459 }
1460 }
1461
1462 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1463 self.start_transaction(cx);
1464 let mut old_selections = SmallVec::<[_; 32]>::new();
1465 {
1466 let selections = self.local_selections::<usize>(cx);
1467 let buffer = self.buffer.read(cx).snapshot(cx);
1468 for selection in selections.iter() {
1469 let start_point = selection.start.to_point(&buffer);
1470 let indent = buffer
1471 .indent_column_for_line(start_point.row)
1472 .min(start_point.column);
1473 let start = selection.start;
1474 let end = selection.end;
1475
1476 let mut insert_extra_newline = false;
1477 if let Some(language) = buffer.language() {
1478 let leading_whitespace_len = buffer
1479 .reversed_chars_at(start)
1480 .take_while(|c| c.is_whitespace() && *c != '\n')
1481 .map(|c| c.len_utf8())
1482 .sum::<usize>();
1483
1484 let trailing_whitespace_len = buffer
1485 .chars_at(end)
1486 .take_while(|c| c.is_whitespace() && *c != '\n')
1487 .map(|c| c.len_utf8())
1488 .sum::<usize>();
1489
1490 insert_extra_newline = language.brackets().iter().any(|pair| {
1491 let pair_start = pair.start.trim_end();
1492 let pair_end = pair.end.trim_start();
1493
1494 pair.newline
1495 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1496 && buffer.contains_str_at(
1497 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1498 pair_start,
1499 )
1500 });
1501 }
1502
1503 old_selections.push((
1504 selection.id,
1505 buffer.anchor_after(end),
1506 start..end,
1507 indent,
1508 insert_extra_newline,
1509 ));
1510 }
1511 }
1512
1513 self.buffer.update(cx, |buffer, cx| {
1514 let mut delta = 0_isize;
1515 let mut pending_edit: Option<PendingEdit> = None;
1516 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1517 if pending_edit.as_ref().map_or(false, |pending| {
1518 pending.indent != *indent
1519 || pending.insert_extra_newline != *insert_extra_newline
1520 }) {
1521 let pending = pending_edit.take().unwrap();
1522 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1523 new_text.push('\n');
1524 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1525 if pending.insert_extra_newline {
1526 new_text = new_text.repeat(2);
1527 }
1528 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1529 delta += pending.delta;
1530 }
1531
1532 let start = (range.start as isize + delta) as usize;
1533 let end = (range.end as isize + delta) as usize;
1534 let mut text_len = *indent as usize + 1;
1535 if *insert_extra_newline {
1536 text_len *= 2;
1537 }
1538
1539 let pending = pending_edit.get_or_insert_with(Default::default);
1540 pending.delta += text_len as isize - (end - start) as isize;
1541 pending.indent = *indent;
1542 pending.insert_extra_newline = *insert_extra_newline;
1543 pending.ranges.push(start..end);
1544 }
1545
1546 let pending = pending_edit.unwrap();
1547 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1548 new_text.push('\n');
1549 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1550 if pending.insert_extra_newline {
1551 new_text = new_text.repeat(2);
1552 }
1553 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1554
1555 let buffer = buffer.read(cx);
1556 self.selections = self
1557 .selections
1558 .iter()
1559 .cloned()
1560 .zip(old_selections)
1561 .map(
1562 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1563 let mut cursor = end_anchor.to_point(&buffer);
1564 if insert_extra_newline {
1565 cursor.row -= 1;
1566 cursor.column = buffer.line_len(cursor.row);
1567 }
1568 let anchor = buffer.anchor_after(cursor);
1569 new_selection.start = anchor.clone();
1570 new_selection.end = anchor;
1571 new_selection
1572 },
1573 )
1574 .collect();
1575 });
1576
1577 self.request_autoscroll(Autoscroll::Fit, cx);
1578 self.end_transaction(cx);
1579
1580 #[derive(Default)]
1581 struct PendingEdit {
1582 indent: u32,
1583 insert_extra_newline: bool,
1584 delta: isize,
1585 ranges: SmallVec<[Range<usize>; 32]>,
1586 }
1587 }
1588
1589 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1590 self.start_transaction(cx);
1591
1592 let old_selections = self.local_selections::<usize>(cx);
1593 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1594 let anchors = {
1595 let snapshot = buffer.read(cx);
1596 old_selections
1597 .iter()
1598 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1599 .collect::<Vec<_>>()
1600 };
1601 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1602 buffer.edit_with_autoindent(edit_ranges, text, cx);
1603 anchors
1604 });
1605
1606 let selections = {
1607 let snapshot = self.buffer.read(cx).read(cx);
1608 selection_anchors
1609 .into_iter()
1610 .map(|(id, goal, position)| {
1611 let position = position.to_offset(&snapshot);
1612 Selection {
1613 id,
1614 start: position,
1615 end: position,
1616 goal,
1617 reversed: false,
1618 }
1619 })
1620 .collect()
1621 };
1622 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1623 self.end_transaction(cx);
1624 }
1625
1626 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1627 if let Some(selection) = self.newest_anchor_selection() {
1628 if self
1629 .buffer
1630 .read(cx)
1631 .is_completion_trigger(selection.head(), text, cx)
1632 {
1633 self.show_completions(&ShowCompletions, cx);
1634 } else {
1635 self.hide_completions(cx);
1636 }
1637 }
1638 }
1639
1640 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1641 let selections = self.local_selections::<usize>(cx);
1642 let mut bracket_pair_state = None;
1643 let mut new_selections = None;
1644 self.buffer.update(cx, |buffer, cx| {
1645 let mut snapshot = buffer.snapshot(cx);
1646 let left_biased_selections = selections
1647 .iter()
1648 .map(|selection| Selection {
1649 id: selection.id,
1650 start: snapshot.anchor_before(selection.start),
1651 end: snapshot.anchor_before(selection.end),
1652 reversed: selection.reversed,
1653 goal: selection.goal,
1654 })
1655 .collect::<Vec<_>>();
1656
1657 let autoclose_pair = snapshot.language().and_then(|language| {
1658 let first_selection_start = selections.first().unwrap().start;
1659 let pair = language.brackets().iter().find(|pair| {
1660 snapshot.contains_str_at(
1661 first_selection_start.saturating_sub(pair.start.len()),
1662 &pair.start,
1663 )
1664 });
1665 pair.and_then(|pair| {
1666 let should_autoclose = selections[1..].iter().all(|selection| {
1667 snapshot.contains_str_at(
1668 selection.start.saturating_sub(pair.start.len()),
1669 &pair.start,
1670 )
1671 });
1672
1673 if should_autoclose {
1674 Some(pair.clone())
1675 } else {
1676 None
1677 }
1678 })
1679 });
1680
1681 if let Some(pair) = autoclose_pair {
1682 let selection_ranges = selections
1683 .iter()
1684 .map(|selection| {
1685 let start = selection.start.to_offset(&snapshot);
1686 start..start
1687 })
1688 .collect::<SmallVec<[_; 32]>>();
1689
1690 buffer.edit(selection_ranges, &pair.end, cx);
1691 snapshot = buffer.snapshot(cx);
1692
1693 new_selections = Some(
1694 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1695 .collect::<Vec<_>>(),
1696 );
1697
1698 if pair.end.len() == 1 {
1699 let mut delta = 0;
1700 bracket_pair_state = Some(BracketPairState {
1701 ranges: selections
1702 .iter()
1703 .map(move |selection| {
1704 let offset = selection.start + delta;
1705 delta += 1;
1706 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1707 })
1708 .collect(),
1709 pair,
1710 });
1711 }
1712 }
1713 });
1714
1715 if let Some(new_selections) = new_selections {
1716 self.update_selections(new_selections, None, cx);
1717 }
1718 if let Some(bracket_pair_state) = bracket_pair_state {
1719 self.autoclose_stack.push(bracket_pair_state);
1720 }
1721 }
1722
1723 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1724 let old_selections = self.local_selections::<usize>(cx);
1725 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1726 autoclose_pair
1727 } else {
1728 return false;
1729 };
1730 if text != autoclose_pair.pair.end {
1731 return false;
1732 }
1733
1734 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1735
1736 let buffer = self.buffer.read(cx).snapshot(cx);
1737 if old_selections
1738 .iter()
1739 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1740 .all(|(selection, autoclose_range)| {
1741 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1742 selection.is_empty() && selection.start == autoclose_range_end
1743 })
1744 {
1745 let new_selections = old_selections
1746 .into_iter()
1747 .map(|selection| {
1748 let cursor = selection.start + 1;
1749 Selection {
1750 id: selection.id,
1751 start: cursor,
1752 end: cursor,
1753 reversed: false,
1754 goal: SelectionGoal::None,
1755 }
1756 })
1757 .collect();
1758 self.autoclose_stack.pop();
1759 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1760 true
1761 } else {
1762 false
1763 }
1764 }
1765
1766 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1767 let offset = position.to_offset(buffer);
1768 let (word_range, kind) = buffer.surrounding_word(offset);
1769 if offset > word_range.start && kind == Some(CharKind::Word) {
1770 Some(
1771 buffer
1772 .text_for_range(word_range.start..offset)
1773 .collect::<String>(),
1774 )
1775 } else {
1776 None
1777 }
1778 }
1779
1780 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1781 let position = if let Some(selection) = self.newest_anchor_selection() {
1782 selection.head()
1783 } else {
1784 return;
1785 };
1786
1787 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1788 let completions = self
1789 .buffer
1790 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1791
1792 let id = post_inc(&mut self.next_completion_id);
1793 let task = cx.spawn_weak(|this, mut cx| {
1794 async move {
1795 let completions = completions.await?;
1796
1797 let mut menu = CompletionMenu {
1798 id,
1799 initial_position: position,
1800 match_candidates: completions
1801 .iter()
1802 .enumerate()
1803 .map(|(id, completion)| {
1804 StringMatchCandidate::new(
1805 id,
1806 completion.label.text[completion.label.filter_range.clone()].into(),
1807 )
1808 })
1809 .collect(),
1810 completions: completions.into(),
1811 matches: Vec::new().into(),
1812 selected_item: 0,
1813 list: Default::default(),
1814 };
1815
1816 menu.filter(query.as_deref(), cx.background()).await;
1817
1818 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1819 this.update(&mut cx, |this, cx| {
1820 match this.context_menu.as_ref() {
1821 None => {}
1822 Some(ContextMenu::Completion(prev_menu)) => {
1823 if prev_menu.id > menu.id {
1824 return;
1825 }
1826 }
1827 _ => return,
1828 }
1829
1830 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1831 if menu.matches.is_empty() {
1832 this.hide_completions(cx);
1833 } else if this.focused {
1834 this.context_menu = Some(ContextMenu::Completion(menu));
1835 }
1836
1837 cx.notify();
1838 });
1839 }
1840 Ok::<_, anyhow::Error>(())
1841 }
1842 .log_err()
1843 });
1844 self.completion_tasks.push((id, task));
1845 }
1846
1847 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
1848 let position = if let Some(selection) = self.newest_anchor_selection() {
1849 selection.head()
1850 } else {
1851 return;
1852 };
1853
1854 let actions = self
1855 .buffer
1856 .update(cx, |buffer, cx| buffer.code_actions(position.clone(), cx));
1857 cx.spawn(|this, cx| async move {
1858 dbg!(actions.await.unwrap());
1859 })
1860 .detach();
1861 }
1862
1863 fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionMenu> {
1864 cx.notify();
1865 self.completion_tasks.clear();
1866 self.context_menu.take().and_then(|menu| {
1867 if let ContextMenu::Completion(menu) = menu {
1868 Some(menu)
1869 } else {
1870 None
1871 }
1872 })
1873 }
1874
1875 pub fn confirm_completion(
1876 &mut self,
1877 completion_ix: Option<usize>,
1878 cx: &mut ViewContext<Self>,
1879 ) -> Option<Task<Result<()>>> {
1880 let context_menu = self.hide_completions(cx)?;
1881 let mat = context_menu
1882 .matches
1883 .get(completion_ix.unwrap_or(context_menu.selected_item))?;
1884 let completion = context_menu.completions.get(mat.candidate_id)?;
1885
1886 let snippet;
1887 let text;
1888 if completion.is_snippet() {
1889 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1890 text = snippet.as_ref().unwrap().text.clone();
1891 } else {
1892 snippet = None;
1893 text = completion.new_text.clone();
1894 };
1895 let snapshot = self.buffer.read(cx).snapshot(cx);
1896 let old_range = completion.old_range.to_offset(&snapshot);
1897 let old_text = snapshot
1898 .text_for_range(old_range.clone())
1899 .collect::<String>();
1900
1901 let selections = self.local_selections::<usize>(cx);
1902 let newest_selection = selections.iter().max_by_key(|s| s.id)?;
1903 let lookbehind = newest_selection.start.saturating_sub(old_range.start);
1904 let lookahead = old_range.end.saturating_sub(newest_selection.end);
1905 let mut common_prefix_len = old_text
1906 .bytes()
1907 .zip(text.bytes())
1908 .take_while(|(a, b)| a == b)
1909 .count();
1910
1911 let mut ranges = Vec::new();
1912 for selection in &selections {
1913 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
1914 let start = selection.start.saturating_sub(lookbehind);
1915 let end = selection.end + lookahead;
1916 ranges.push(start + common_prefix_len..end);
1917 } else {
1918 common_prefix_len = 0;
1919 ranges.clear();
1920 ranges.extend(selections.iter().map(|s| {
1921 if s.id == newest_selection.id {
1922 old_range.clone()
1923 } else {
1924 s.start..s.end
1925 }
1926 }));
1927 break;
1928 }
1929 }
1930 let text = &text[common_prefix_len..];
1931
1932 self.start_transaction(cx);
1933 if let Some(mut snippet) = snippet {
1934 snippet.text = text.to_string();
1935 for tabstop in snippet.tabstops.iter_mut().flatten() {
1936 tabstop.start -= common_prefix_len as isize;
1937 tabstop.end -= common_prefix_len as isize;
1938 }
1939
1940 self.insert_snippet(&ranges, snippet, cx).log_err();
1941 } else {
1942 self.buffer.update(cx, |buffer, cx| {
1943 buffer.edit_with_autoindent(ranges, text, cx);
1944 });
1945 }
1946 self.end_transaction(cx);
1947
1948 Some(self.buffer.update(cx, |buffer, cx| {
1949 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
1950 }))
1951 }
1952
1953 pub fn should_render_context_menu(&self) -> bool {
1954 self.context_menu
1955 .as_ref()
1956 .map_or(false, |menu| menu.should_render())
1957 }
1958
1959 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
1960 self.context_menu
1961 .as_ref()
1962 .map(|menu| menu.render(self.build_settings.clone(), cx))
1963 }
1964
1965 pub fn insert_snippet(
1966 &mut self,
1967 insertion_ranges: &[Range<usize>],
1968 snippet: Snippet,
1969 cx: &mut ViewContext<Self>,
1970 ) -> Result<()> {
1971 let tabstops = self.buffer.update(cx, |buffer, cx| {
1972 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
1973
1974 let snapshot = &*buffer.read(cx);
1975 let snippet = &snippet;
1976 snippet
1977 .tabstops
1978 .iter()
1979 .map(|tabstop| {
1980 let mut tabstop_ranges = tabstop
1981 .iter()
1982 .flat_map(|tabstop_range| {
1983 let mut delta = 0 as isize;
1984 insertion_ranges.iter().map(move |insertion_range| {
1985 let insertion_start = insertion_range.start as isize + delta;
1986 delta +=
1987 snippet.text.len() as isize - insertion_range.len() as isize;
1988
1989 let start = snapshot.anchor_before(
1990 (insertion_start + tabstop_range.start) as usize,
1991 );
1992 let end = snapshot
1993 .anchor_after((insertion_start + tabstop_range.end) as usize);
1994 start..end
1995 })
1996 })
1997 .collect::<Vec<_>>();
1998 tabstop_ranges
1999 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2000 tabstop_ranges
2001 })
2002 .collect::<Vec<_>>()
2003 });
2004
2005 if let Some(tabstop) = tabstops.first() {
2006 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2007 self.snippet_stack.push(SnippetState {
2008 active_index: 0,
2009 ranges: tabstops,
2010 });
2011 }
2012
2013 Ok(())
2014 }
2015
2016 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2017 self.move_to_snippet_tabstop(Bias::Right, cx)
2018 }
2019
2020 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2021 self.move_to_snippet_tabstop(Bias::Left, cx);
2022 }
2023
2024 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2025 let buffer = self.buffer.read(cx).snapshot(cx);
2026
2027 if let Some(snippet) = self.snippet_stack.last_mut() {
2028 match bias {
2029 Bias::Left => {
2030 if snippet.active_index > 0 {
2031 snippet.active_index -= 1;
2032 } else {
2033 return false;
2034 }
2035 }
2036 Bias::Right => {
2037 if snippet.active_index + 1 < snippet.ranges.len() {
2038 snippet.active_index += 1;
2039 } else {
2040 return false;
2041 }
2042 }
2043 }
2044 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2045 let new_selections = current_ranges
2046 .iter()
2047 .map(|new_range| {
2048 let new_range = new_range.to_offset(&buffer);
2049 Selection {
2050 id: post_inc(&mut self.next_selection_id),
2051 start: new_range.start,
2052 end: new_range.end,
2053 reversed: false,
2054 goal: SelectionGoal::None,
2055 }
2056 })
2057 .collect();
2058
2059 // Remove the snippet state when moving to the last tabstop.
2060 if snippet.active_index + 1 == snippet.ranges.len() {
2061 self.snippet_stack.pop();
2062 }
2063
2064 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2065 return true;
2066 }
2067 self.snippet_stack.pop();
2068 }
2069
2070 false
2071 }
2072
2073 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2074 self.start_transaction(cx);
2075 self.select_all(&SelectAll, cx);
2076 self.insert("", cx);
2077 self.end_transaction(cx);
2078 }
2079
2080 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2081 self.start_transaction(cx);
2082 let mut selections = self.local_selections::<Point>(cx);
2083 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2084 for selection in &mut selections {
2085 if selection.is_empty() {
2086 let head = selection.head().to_display_point(&display_map);
2087 let cursor = movement::left(&display_map, head)
2088 .unwrap()
2089 .to_point(&display_map);
2090 selection.set_head(cursor);
2091 selection.goal = SelectionGoal::None;
2092 }
2093 }
2094 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2095 self.insert("", cx);
2096 self.end_transaction(cx);
2097 }
2098
2099 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2100 self.start_transaction(cx);
2101 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2102 let mut selections = self.local_selections::<Point>(cx);
2103 for selection in &mut selections {
2104 if selection.is_empty() {
2105 let head = selection.head().to_display_point(&display_map);
2106 let cursor = movement::right(&display_map, head)
2107 .unwrap()
2108 .to_point(&display_map);
2109 selection.set_head(cursor);
2110 selection.goal = SelectionGoal::None;
2111 }
2112 }
2113 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2114 self.insert(&"", cx);
2115 self.end_transaction(cx);
2116 }
2117
2118 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2119 if self.move_to_next_snippet_tabstop(cx) {
2120 return;
2121 }
2122
2123 self.start_transaction(cx);
2124 let tab_size = (self.build_settings)(cx).tab_size;
2125 let mut selections = self.local_selections::<Point>(cx);
2126 let mut last_indent = None;
2127 self.buffer.update(cx, |buffer, cx| {
2128 for selection in &mut selections {
2129 if selection.is_empty() {
2130 let char_column = buffer
2131 .read(cx)
2132 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2133 .flat_map(str::chars)
2134 .count();
2135 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2136 buffer.edit(
2137 [selection.start..selection.start],
2138 " ".repeat(chars_to_next_tab_stop),
2139 cx,
2140 );
2141 selection.start.column += chars_to_next_tab_stop as u32;
2142 selection.end = selection.start;
2143 } else {
2144 let mut start_row = selection.start.row;
2145 let mut end_row = selection.end.row + 1;
2146
2147 // If a selection ends at the beginning of a line, don't indent
2148 // that last line.
2149 if selection.end.column == 0 {
2150 end_row -= 1;
2151 }
2152
2153 // Avoid re-indenting a row that has already been indented by a
2154 // previous selection, but still update this selection's column
2155 // to reflect that indentation.
2156 if let Some((last_indent_row, last_indent_len)) = last_indent {
2157 if last_indent_row == selection.start.row {
2158 selection.start.column += last_indent_len;
2159 start_row += 1;
2160 }
2161 if last_indent_row == selection.end.row {
2162 selection.end.column += last_indent_len;
2163 }
2164 }
2165
2166 for row in start_row..end_row {
2167 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2168 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2169 let row_start = Point::new(row, 0);
2170 buffer.edit(
2171 [row_start..row_start],
2172 " ".repeat(columns_to_next_tab_stop),
2173 cx,
2174 );
2175
2176 // Update this selection's endpoints to reflect the indentation.
2177 if row == selection.start.row {
2178 selection.start.column += columns_to_next_tab_stop as u32;
2179 }
2180 if row == selection.end.row {
2181 selection.end.column += columns_to_next_tab_stop as u32;
2182 }
2183
2184 last_indent = Some((row, columns_to_next_tab_stop as u32));
2185 }
2186 }
2187 }
2188 });
2189
2190 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2191 self.end_transaction(cx);
2192 }
2193
2194 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2195 if !self.snippet_stack.is_empty() {
2196 self.move_to_prev_snippet_tabstop(cx);
2197 return;
2198 }
2199
2200 self.start_transaction(cx);
2201 let tab_size = (self.build_settings)(cx).tab_size;
2202 let selections = self.local_selections::<Point>(cx);
2203 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2204 let mut deletion_ranges = Vec::new();
2205 let mut last_outdent = None;
2206 {
2207 let buffer = self.buffer.read(cx).read(cx);
2208 for selection in &selections {
2209 let mut rows = selection.spanned_rows(false, &display_map);
2210
2211 // Avoid re-outdenting a row that has already been outdented by a
2212 // previous selection.
2213 if let Some(last_row) = last_outdent {
2214 if last_row == rows.start {
2215 rows.start += 1;
2216 }
2217 }
2218
2219 for row in rows {
2220 let column = buffer.indent_column_for_line(row) as usize;
2221 if column > 0 {
2222 let mut deletion_len = (column % tab_size) as u32;
2223 if deletion_len == 0 {
2224 deletion_len = tab_size as u32;
2225 }
2226 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2227 last_outdent = Some(row);
2228 }
2229 }
2230 }
2231 }
2232 self.buffer.update(cx, |buffer, cx| {
2233 buffer.edit(deletion_ranges, "", cx);
2234 });
2235
2236 self.update_selections(
2237 self.local_selections::<usize>(cx),
2238 Some(Autoscroll::Fit),
2239 cx,
2240 );
2241 self.end_transaction(cx);
2242 }
2243
2244 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2245 self.start_transaction(cx);
2246
2247 let selections = self.local_selections::<Point>(cx);
2248 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2249 let buffer = self.buffer.read(cx).snapshot(cx);
2250
2251 let mut new_cursors = Vec::new();
2252 let mut edit_ranges = Vec::new();
2253 let mut selections = selections.iter().peekable();
2254 while let Some(selection) = selections.next() {
2255 let mut rows = selection.spanned_rows(false, &display_map);
2256 let goal_display_column = selection.head().to_display_point(&display_map).column();
2257
2258 // Accumulate contiguous regions of rows that we want to delete.
2259 while let Some(next_selection) = selections.peek() {
2260 let next_rows = next_selection.spanned_rows(false, &display_map);
2261 if next_rows.start <= rows.end {
2262 rows.end = next_rows.end;
2263 selections.next().unwrap();
2264 } else {
2265 break;
2266 }
2267 }
2268
2269 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2270 let edit_end;
2271 let cursor_buffer_row;
2272 if buffer.max_point().row >= rows.end {
2273 // If there's a line after the range, delete the \n from the end of the row range
2274 // and position the cursor on the next line.
2275 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2276 cursor_buffer_row = rows.end;
2277 } else {
2278 // If there isn't a line after the range, delete the \n from the line before the
2279 // start of the row range and position the cursor there.
2280 edit_start = edit_start.saturating_sub(1);
2281 edit_end = buffer.len();
2282 cursor_buffer_row = rows.start.saturating_sub(1);
2283 }
2284
2285 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2286 *cursor.column_mut() =
2287 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2288
2289 new_cursors.push((
2290 selection.id,
2291 buffer.anchor_after(cursor.to_point(&display_map)),
2292 ));
2293 edit_ranges.push(edit_start..edit_end);
2294 }
2295
2296 let buffer = self.buffer.update(cx, |buffer, cx| {
2297 buffer.edit(edit_ranges, "", cx);
2298 buffer.snapshot(cx)
2299 });
2300 let new_selections = new_cursors
2301 .into_iter()
2302 .map(|(id, cursor)| {
2303 let cursor = cursor.to_point(&buffer);
2304 Selection {
2305 id,
2306 start: cursor,
2307 end: cursor,
2308 reversed: false,
2309 goal: SelectionGoal::None,
2310 }
2311 })
2312 .collect();
2313 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2314 self.end_transaction(cx);
2315 }
2316
2317 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2318 self.start_transaction(cx);
2319
2320 let selections = self.local_selections::<Point>(cx);
2321 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2322 let buffer = &display_map.buffer_snapshot;
2323
2324 let mut edits = Vec::new();
2325 let mut selections_iter = selections.iter().peekable();
2326 while let Some(selection) = selections_iter.next() {
2327 // Avoid duplicating the same lines twice.
2328 let mut rows = selection.spanned_rows(false, &display_map);
2329
2330 while let Some(next_selection) = selections_iter.peek() {
2331 let next_rows = next_selection.spanned_rows(false, &display_map);
2332 if next_rows.start <= rows.end - 1 {
2333 rows.end = next_rows.end;
2334 selections_iter.next().unwrap();
2335 } else {
2336 break;
2337 }
2338 }
2339
2340 // Copy the text from the selected row region and splice it at the start of the region.
2341 let start = Point::new(rows.start, 0);
2342 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2343 let text = buffer
2344 .text_for_range(start..end)
2345 .chain(Some("\n"))
2346 .collect::<String>();
2347 edits.push((start, text, rows.len() as u32));
2348 }
2349
2350 self.buffer.update(cx, |buffer, cx| {
2351 for (point, text, _) in edits.into_iter().rev() {
2352 buffer.edit(Some(point..point), text, cx);
2353 }
2354 });
2355
2356 self.request_autoscroll(Autoscroll::Fit, cx);
2357 self.end_transaction(cx);
2358 }
2359
2360 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2361 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2362 let buffer = self.buffer.read(cx).snapshot(cx);
2363
2364 let mut edits = Vec::new();
2365 let mut unfold_ranges = Vec::new();
2366 let mut refold_ranges = Vec::new();
2367
2368 let selections = self.local_selections::<Point>(cx);
2369 let mut selections = selections.iter().peekable();
2370 let mut contiguous_row_selections = Vec::new();
2371 let mut new_selections = Vec::new();
2372
2373 while let Some(selection) = selections.next() {
2374 // Find all the selections that span a contiguous row range
2375 contiguous_row_selections.push(selection.clone());
2376 let start_row = selection.start.row;
2377 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2378 display_map.next_line_boundary(selection.end).0.row + 1
2379 } else {
2380 selection.end.row
2381 };
2382
2383 while let Some(next_selection) = selections.peek() {
2384 if next_selection.start.row <= end_row {
2385 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2386 display_map.next_line_boundary(next_selection.end).0.row + 1
2387 } else {
2388 next_selection.end.row
2389 };
2390 contiguous_row_selections.push(selections.next().unwrap().clone());
2391 } else {
2392 break;
2393 }
2394 }
2395
2396 // Move the text spanned by the row range to be before the line preceding the row range
2397 if start_row > 0 {
2398 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2399 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2400 let insertion_point = display_map
2401 .prev_line_boundary(Point::new(start_row - 1, 0))
2402 .0;
2403
2404 // Don't move lines across excerpts
2405 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2406 let text = buffer
2407 .text_for_range(range_to_move.clone())
2408 .flat_map(|s| s.chars())
2409 .skip(1)
2410 .chain(['\n'])
2411 .collect::<String>();
2412
2413 edits.push((
2414 buffer.anchor_after(range_to_move.start)
2415 ..buffer.anchor_before(range_to_move.end),
2416 String::new(),
2417 ));
2418 let insertion_anchor = buffer.anchor_after(insertion_point);
2419 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2420
2421 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2422
2423 // Move selections up
2424 new_selections.extend(contiguous_row_selections.drain(..).map(
2425 |mut selection| {
2426 selection.start.row -= row_delta;
2427 selection.end.row -= row_delta;
2428 selection
2429 },
2430 ));
2431
2432 // Move folds up
2433 unfold_ranges.push(range_to_move.clone());
2434 for fold in display_map.folds_in_range(
2435 buffer.anchor_before(range_to_move.start)
2436 ..buffer.anchor_after(range_to_move.end),
2437 ) {
2438 let mut start = fold.start.to_point(&buffer);
2439 let mut end = fold.end.to_point(&buffer);
2440 start.row -= row_delta;
2441 end.row -= row_delta;
2442 refold_ranges.push(start..end);
2443 }
2444 }
2445 }
2446
2447 // If we didn't move line(s), preserve the existing selections
2448 new_selections.extend(contiguous_row_selections.drain(..));
2449 }
2450
2451 self.start_transaction(cx);
2452 self.unfold_ranges(unfold_ranges, cx);
2453 self.buffer.update(cx, |buffer, cx| {
2454 for (range, text) in edits {
2455 buffer.edit([range], text, cx);
2456 }
2457 });
2458 self.fold_ranges(refold_ranges, cx);
2459 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2460 self.end_transaction(cx);
2461 }
2462
2463 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2464 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2465 let buffer = self.buffer.read(cx).snapshot(cx);
2466
2467 let mut edits = Vec::new();
2468 let mut unfold_ranges = Vec::new();
2469 let mut refold_ranges = Vec::new();
2470
2471 let selections = self.local_selections::<Point>(cx);
2472 let mut selections = selections.iter().peekable();
2473 let mut contiguous_row_selections = Vec::new();
2474 let mut new_selections = Vec::new();
2475
2476 while let Some(selection) = selections.next() {
2477 // Find all the selections that span a contiguous row range
2478 contiguous_row_selections.push(selection.clone());
2479 let start_row = selection.start.row;
2480 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2481 display_map.next_line_boundary(selection.end).0.row + 1
2482 } else {
2483 selection.end.row
2484 };
2485
2486 while let Some(next_selection) = selections.peek() {
2487 if next_selection.start.row <= end_row {
2488 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2489 display_map.next_line_boundary(next_selection.end).0.row + 1
2490 } else {
2491 next_selection.end.row
2492 };
2493 contiguous_row_selections.push(selections.next().unwrap().clone());
2494 } else {
2495 break;
2496 }
2497 }
2498
2499 // Move the text spanned by the row range to be after the last line of the row range
2500 if end_row <= buffer.max_point().row {
2501 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2502 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2503
2504 // Don't move lines across excerpt boundaries
2505 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2506 let mut text = String::from("\n");
2507 text.extend(buffer.text_for_range(range_to_move.clone()));
2508 text.pop(); // Drop trailing newline
2509 edits.push((
2510 buffer.anchor_after(range_to_move.start)
2511 ..buffer.anchor_before(range_to_move.end),
2512 String::new(),
2513 ));
2514 let insertion_anchor = buffer.anchor_after(insertion_point);
2515 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2516
2517 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2518
2519 // Move selections down
2520 new_selections.extend(contiguous_row_selections.drain(..).map(
2521 |mut selection| {
2522 selection.start.row += row_delta;
2523 selection.end.row += row_delta;
2524 selection
2525 },
2526 ));
2527
2528 // Move folds down
2529 unfold_ranges.push(range_to_move.clone());
2530 for fold in display_map.folds_in_range(
2531 buffer.anchor_before(range_to_move.start)
2532 ..buffer.anchor_after(range_to_move.end),
2533 ) {
2534 let mut start = fold.start.to_point(&buffer);
2535 let mut end = fold.end.to_point(&buffer);
2536 start.row += row_delta;
2537 end.row += row_delta;
2538 refold_ranges.push(start..end);
2539 }
2540 }
2541 }
2542
2543 // If we didn't move line(s), preserve the existing selections
2544 new_selections.extend(contiguous_row_selections.drain(..));
2545 }
2546
2547 self.start_transaction(cx);
2548 self.unfold_ranges(unfold_ranges, cx);
2549 self.buffer.update(cx, |buffer, cx| {
2550 for (range, text) in edits {
2551 buffer.edit([range], text, cx);
2552 }
2553 });
2554 self.fold_ranges(refold_ranges, cx);
2555 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2556 self.end_transaction(cx);
2557 }
2558
2559 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2560 self.start_transaction(cx);
2561 let mut text = String::new();
2562 let mut selections = self.local_selections::<Point>(cx);
2563 let mut clipboard_selections = Vec::with_capacity(selections.len());
2564 {
2565 let buffer = self.buffer.read(cx).read(cx);
2566 let max_point = buffer.max_point();
2567 for selection in &mut selections {
2568 let is_entire_line = selection.is_empty();
2569 if is_entire_line {
2570 selection.start = Point::new(selection.start.row, 0);
2571 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2572 selection.goal = SelectionGoal::None;
2573 }
2574 let mut len = 0;
2575 for chunk in buffer.text_for_range(selection.start..selection.end) {
2576 text.push_str(chunk);
2577 len += chunk.len();
2578 }
2579 clipboard_selections.push(ClipboardSelection {
2580 len,
2581 is_entire_line,
2582 });
2583 }
2584 }
2585 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2586 self.insert("", cx);
2587 self.end_transaction(cx);
2588
2589 cx.as_mut()
2590 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2591 }
2592
2593 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2594 let selections = self.local_selections::<Point>(cx);
2595 let mut text = String::new();
2596 let mut clipboard_selections = Vec::with_capacity(selections.len());
2597 {
2598 let buffer = self.buffer.read(cx).read(cx);
2599 let max_point = buffer.max_point();
2600 for selection in selections.iter() {
2601 let mut start = selection.start;
2602 let mut end = selection.end;
2603 let is_entire_line = selection.is_empty();
2604 if is_entire_line {
2605 start = Point::new(start.row, 0);
2606 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2607 }
2608 let mut len = 0;
2609 for chunk in buffer.text_for_range(start..end) {
2610 text.push_str(chunk);
2611 len += chunk.len();
2612 }
2613 clipboard_selections.push(ClipboardSelection {
2614 len,
2615 is_entire_line,
2616 });
2617 }
2618 }
2619
2620 cx.as_mut()
2621 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2622 }
2623
2624 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2625 if let Some(item) = cx.as_mut().read_from_clipboard() {
2626 let clipboard_text = item.text();
2627 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2628 let mut selections = self.local_selections::<usize>(cx);
2629 let all_selections_were_entire_line =
2630 clipboard_selections.iter().all(|s| s.is_entire_line);
2631 if clipboard_selections.len() != selections.len() {
2632 clipboard_selections.clear();
2633 }
2634
2635 let mut delta = 0_isize;
2636 let mut start_offset = 0;
2637 for (i, selection) in selections.iter_mut().enumerate() {
2638 let to_insert;
2639 let entire_line;
2640 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2641 let end_offset = start_offset + clipboard_selection.len;
2642 to_insert = &clipboard_text[start_offset..end_offset];
2643 entire_line = clipboard_selection.is_entire_line;
2644 start_offset = end_offset
2645 } else {
2646 to_insert = clipboard_text.as_str();
2647 entire_line = all_selections_were_entire_line;
2648 }
2649
2650 selection.start = (selection.start as isize + delta) as usize;
2651 selection.end = (selection.end as isize + delta) as usize;
2652
2653 self.buffer.update(cx, |buffer, cx| {
2654 // If the corresponding selection was empty when this slice of the
2655 // clipboard text was written, then the entire line containing the
2656 // selection was copied. If this selection is also currently empty,
2657 // then paste the line before the current line of the buffer.
2658 let range = if selection.is_empty() && entire_line {
2659 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2660 let line_start = selection.start - column;
2661 line_start..line_start
2662 } else {
2663 selection.start..selection.end
2664 };
2665
2666 delta += to_insert.len() as isize - range.len() as isize;
2667 buffer.edit([range], to_insert, cx);
2668 selection.start += to_insert.len();
2669 selection.end = selection.start;
2670 });
2671 }
2672 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2673 } else {
2674 self.insert(clipboard_text, cx);
2675 }
2676 }
2677 }
2678
2679 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2680 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2681 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2682 self.set_selections(selections, cx);
2683 }
2684 self.request_autoscroll(Autoscroll::Fit, cx);
2685 }
2686 }
2687
2688 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2689 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2690 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2691 self.set_selections(selections, cx);
2692 }
2693 self.request_autoscroll(Autoscroll::Fit, cx);
2694 }
2695 }
2696
2697 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2698 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2699 let mut selections = self.local_selections::<Point>(cx);
2700 for selection in &mut selections {
2701 let start = selection.start.to_display_point(&display_map);
2702 let end = selection.end.to_display_point(&display_map);
2703
2704 if start != end {
2705 selection.end = selection.start.clone();
2706 } else {
2707 let cursor = movement::left(&display_map, start)
2708 .unwrap()
2709 .to_point(&display_map);
2710 selection.start = cursor.clone();
2711 selection.end = cursor;
2712 }
2713 selection.reversed = false;
2714 selection.goal = SelectionGoal::None;
2715 }
2716 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2717 }
2718
2719 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2720 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2721 let mut selections = self.local_selections::<Point>(cx);
2722 for selection in &mut selections {
2723 let head = selection.head().to_display_point(&display_map);
2724 let cursor = movement::left(&display_map, head)
2725 .unwrap()
2726 .to_point(&display_map);
2727 selection.set_head(cursor);
2728 selection.goal = SelectionGoal::None;
2729 }
2730 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2731 }
2732
2733 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2734 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2735 let mut selections = self.local_selections::<Point>(cx);
2736 for selection in &mut selections {
2737 let start = selection.start.to_display_point(&display_map);
2738 let end = selection.end.to_display_point(&display_map);
2739
2740 if start != end {
2741 selection.start = selection.end.clone();
2742 } else {
2743 let cursor = movement::right(&display_map, end)
2744 .unwrap()
2745 .to_point(&display_map);
2746 selection.start = cursor;
2747 selection.end = cursor;
2748 }
2749 selection.reversed = false;
2750 selection.goal = SelectionGoal::None;
2751 }
2752 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2753 }
2754
2755 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2756 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2757 let mut selections = self.local_selections::<Point>(cx);
2758 for selection in &mut selections {
2759 let head = selection.head().to_display_point(&display_map);
2760 let cursor = movement::right(&display_map, head)
2761 .unwrap()
2762 .to_point(&display_map);
2763 selection.set_head(cursor);
2764 selection.goal = SelectionGoal::None;
2765 }
2766 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2767 }
2768
2769 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2770 if let Some(context_menu) = self.context_menu.as_mut() {
2771 context_menu.select_prev(cx);
2772 return;
2773 }
2774
2775 if matches!(self.mode, EditorMode::SingleLine) {
2776 cx.propagate_action();
2777 return;
2778 }
2779
2780 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2781 let mut selections = self.local_selections::<Point>(cx);
2782 for selection in &mut selections {
2783 let start = selection.start.to_display_point(&display_map);
2784 let end = selection.end.to_display_point(&display_map);
2785 if start != end {
2786 selection.goal = SelectionGoal::None;
2787 }
2788
2789 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2790 let cursor = start.to_point(&display_map);
2791 selection.start = cursor;
2792 selection.end = cursor;
2793 selection.goal = goal;
2794 selection.reversed = false;
2795 }
2796 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2797 }
2798
2799 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2800 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2801 let mut selections = self.local_selections::<Point>(cx);
2802 for selection in &mut selections {
2803 let head = selection.head().to_display_point(&display_map);
2804 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2805 let cursor = head.to_point(&display_map);
2806 selection.set_head(cursor);
2807 selection.goal = goal;
2808 }
2809 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2810 }
2811
2812 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2813 if let Some(context_menu) = self.context_menu.as_mut() {
2814 context_menu.select_next(cx);
2815 return;
2816 }
2817
2818 if matches!(self.mode, EditorMode::SingleLine) {
2819 cx.propagate_action();
2820 return;
2821 }
2822
2823 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2824 let mut selections = self.local_selections::<Point>(cx);
2825 for selection in &mut selections {
2826 let start = selection.start.to_display_point(&display_map);
2827 let end = selection.end.to_display_point(&display_map);
2828 if start != end {
2829 selection.goal = SelectionGoal::None;
2830 }
2831
2832 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2833 let cursor = start.to_point(&display_map);
2834 selection.start = cursor;
2835 selection.end = cursor;
2836 selection.goal = goal;
2837 selection.reversed = false;
2838 }
2839 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2840 }
2841
2842 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2843 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2844 let mut selections = self.local_selections::<Point>(cx);
2845 for selection in &mut selections {
2846 let head = selection.head().to_display_point(&display_map);
2847 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2848 let cursor = head.to_point(&display_map);
2849 selection.set_head(cursor);
2850 selection.goal = goal;
2851 }
2852 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2853 }
2854
2855 pub fn move_to_previous_word_boundary(
2856 &mut self,
2857 _: &MoveToPreviousWordBoundary,
2858 cx: &mut ViewContext<Self>,
2859 ) {
2860 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2861 let mut selections = self.local_selections::<Point>(cx);
2862 for selection in &mut selections {
2863 let head = selection.head().to_display_point(&display_map);
2864 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2865 selection.start = cursor.clone();
2866 selection.end = cursor;
2867 selection.reversed = false;
2868 selection.goal = SelectionGoal::None;
2869 }
2870 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2871 }
2872
2873 pub fn select_to_previous_word_boundary(
2874 &mut self,
2875 _: &SelectToPreviousWordBoundary,
2876 cx: &mut ViewContext<Self>,
2877 ) {
2878 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2879 let mut selections = self.local_selections::<Point>(cx);
2880 for selection in &mut selections {
2881 let head = selection.head().to_display_point(&display_map);
2882 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2883 selection.set_head(cursor);
2884 selection.goal = SelectionGoal::None;
2885 }
2886 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2887 }
2888
2889 pub fn delete_to_previous_word_boundary(
2890 &mut self,
2891 _: &DeleteToPreviousWordBoundary,
2892 cx: &mut ViewContext<Self>,
2893 ) {
2894 self.start_transaction(cx);
2895 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2896 let mut selections = self.local_selections::<Point>(cx);
2897 for selection in &mut selections {
2898 if selection.is_empty() {
2899 let head = selection.head().to_display_point(&display_map);
2900 let cursor =
2901 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2902 selection.set_head(cursor);
2903 selection.goal = SelectionGoal::None;
2904 }
2905 }
2906 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2907 self.insert("", cx);
2908 self.end_transaction(cx);
2909 }
2910
2911 pub fn move_to_next_word_boundary(
2912 &mut self,
2913 _: &MoveToNextWordBoundary,
2914 cx: &mut ViewContext<Self>,
2915 ) {
2916 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2917 let mut selections = self.local_selections::<Point>(cx);
2918 for selection in &mut selections {
2919 let head = selection.head().to_display_point(&display_map);
2920 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2921 selection.start = cursor;
2922 selection.end = cursor;
2923 selection.reversed = false;
2924 selection.goal = SelectionGoal::None;
2925 }
2926 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2927 }
2928
2929 pub fn select_to_next_word_boundary(
2930 &mut self,
2931 _: &SelectToNextWordBoundary,
2932 cx: &mut ViewContext<Self>,
2933 ) {
2934 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2935 let mut selections = self.local_selections::<Point>(cx);
2936 for selection in &mut selections {
2937 let head = selection.head().to_display_point(&display_map);
2938 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2939 selection.set_head(cursor);
2940 selection.goal = SelectionGoal::None;
2941 }
2942 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2943 }
2944
2945 pub fn delete_to_next_word_boundary(
2946 &mut self,
2947 _: &DeleteToNextWordBoundary,
2948 cx: &mut ViewContext<Self>,
2949 ) {
2950 self.start_transaction(cx);
2951 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2952 let mut selections = self.local_selections::<Point>(cx);
2953 for selection in &mut selections {
2954 if selection.is_empty() {
2955 let head = selection.head().to_display_point(&display_map);
2956 let cursor =
2957 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2958 selection.set_head(cursor);
2959 selection.goal = SelectionGoal::None;
2960 }
2961 }
2962 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2963 self.insert("", cx);
2964 self.end_transaction(cx);
2965 }
2966
2967 pub fn move_to_beginning_of_line(
2968 &mut self,
2969 _: &MoveToBeginningOfLine,
2970 cx: &mut ViewContext<Self>,
2971 ) {
2972 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2973 let mut selections = self.local_selections::<Point>(cx);
2974 for selection in &mut selections {
2975 let head = selection.head().to_display_point(&display_map);
2976 let new_head = movement::line_beginning(&display_map, head, true);
2977 let cursor = new_head.to_point(&display_map);
2978 selection.start = cursor;
2979 selection.end = cursor;
2980 selection.reversed = false;
2981 selection.goal = SelectionGoal::None;
2982 }
2983 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2984 }
2985
2986 pub fn select_to_beginning_of_line(
2987 &mut self,
2988 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
2989 cx: &mut ViewContext<Self>,
2990 ) {
2991 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2992 let mut selections = self.local_selections::<Point>(cx);
2993 for selection in &mut selections {
2994 let head = selection.head().to_display_point(&display_map);
2995 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
2996 selection.set_head(new_head.to_point(&display_map));
2997 selection.goal = SelectionGoal::None;
2998 }
2999 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3000 }
3001
3002 pub fn delete_to_beginning_of_line(
3003 &mut self,
3004 _: &DeleteToBeginningOfLine,
3005 cx: &mut ViewContext<Self>,
3006 ) {
3007 self.start_transaction(cx);
3008 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3009 self.backspace(&Backspace, cx);
3010 self.end_transaction(cx);
3011 }
3012
3013 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3014 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3015 let mut selections = self.local_selections::<Point>(cx);
3016 {
3017 for selection in &mut selections {
3018 let head = selection.head().to_display_point(&display_map);
3019 let new_head = movement::line_end(&display_map, head, true);
3020 let anchor = new_head.to_point(&display_map);
3021 selection.start = anchor.clone();
3022 selection.end = anchor;
3023 selection.reversed = false;
3024 selection.goal = SelectionGoal::None;
3025 }
3026 }
3027 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3028 }
3029
3030 pub fn select_to_end_of_line(
3031 &mut self,
3032 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3033 cx: &mut ViewContext<Self>,
3034 ) {
3035 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3036 let mut selections = self.local_selections::<Point>(cx);
3037 for selection in &mut selections {
3038 let head = selection.head().to_display_point(&display_map);
3039 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3040 selection.set_head(new_head.to_point(&display_map));
3041 selection.goal = SelectionGoal::None;
3042 }
3043 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3044 }
3045
3046 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3047 self.start_transaction(cx);
3048 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3049 self.delete(&Delete, cx);
3050 self.end_transaction(cx);
3051 }
3052
3053 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3054 self.start_transaction(cx);
3055 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3056 self.cut(&Cut, cx);
3057 self.end_transaction(cx);
3058 }
3059
3060 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3061 if matches!(self.mode, EditorMode::SingleLine) {
3062 cx.propagate_action();
3063 return;
3064 }
3065
3066 let selection = Selection {
3067 id: post_inc(&mut self.next_selection_id),
3068 start: 0,
3069 end: 0,
3070 reversed: false,
3071 goal: SelectionGoal::None,
3072 };
3073 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3074 }
3075
3076 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3077 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3078 selection.set_head(Point::zero());
3079 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3080 }
3081
3082 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3083 if matches!(self.mode, EditorMode::SingleLine) {
3084 cx.propagate_action();
3085 return;
3086 }
3087
3088 let cursor = self.buffer.read(cx).read(cx).len();
3089 let selection = Selection {
3090 id: post_inc(&mut self.next_selection_id),
3091 start: cursor,
3092 end: cursor,
3093 reversed: false,
3094 goal: SelectionGoal::None,
3095 };
3096 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3097 }
3098
3099 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3100 self.nav_history = nav_history;
3101 }
3102
3103 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3104 self.nav_history.as_ref()
3105 }
3106
3107 fn push_to_nav_history(
3108 &self,
3109 position: Anchor,
3110 new_position: Option<Point>,
3111 cx: &mut ViewContext<Self>,
3112 ) {
3113 if let Some(nav_history) = &self.nav_history {
3114 let buffer = self.buffer.read(cx).read(cx);
3115 let offset = position.to_offset(&buffer);
3116 let point = position.to_point(&buffer);
3117 drop(buffer);
3118
3119 if let Some(new_position) = new_position {
3120 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3121 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3122 return;
3123 }
3124 }
3125
3126 nav_history.push(Some(NavigationData {
3127 anchor: position,
3128 offset,
3129 }));
3130 }
3131 }
3132
3133 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3134 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3135 selection.set_head(self.buffer.read(cx).read(cx).len());
3136 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3137 }
3138
3139 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3140 let selection = Selection {
3141 id: post_inc(&mut self.next_selection_id),
3142 start: 0,
3143 end: self.buffer.read(cx).read(cx).len(),
3144 reversed: false,
3145 goal: SelectionGoal::None,
3146 };
3147 self.update_selections(vec![selection], None, cx);
3148 }
3149
3150 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3152 let mut selections = self.local_selections::<Point>(cx);
3153 let max_point = display_map.buffer_snapshot.max_point();
3154 for selection in &mut selections {
3155 let rows = selection.spanned_rows(true, &display_map);
3156 selection.start = Point::new(rows.start, 0);
3157 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3158 selection.reversed = false;
3159 }
3160 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3161 }
3162
3163 pub fn split_selection_into_lines(
3164 &mut self,
3165 _: &SplitSelectionIntoLines,
3166 cx: &mut ViewContext<Self>,
3167 ) {
3168 let mut to_unfold = Vec::new();
3169 let mut new_selections = Vec::new();
3170 {
3171 let selections = self.local_selections::<Point>(cx);
3172 let buffer = self.buffer.read(cx).read(cx);
3173 for selection in selections {
3174 for row in selection.start.row..selection.end.row {
3175 let cursor = Point::new(row, buffer.line_len(row));
3176 new_selections.push(Selection {
3177 id: post_inc(&mut self.next_selection_id),
3178 start: cursor,
3179 end: cursor,
3180 reversed: false,
3181 goal: SelectionGoal::None,
3182 });
3183 }
3184 new_selections.push(Selection {
3185 id: selection.id,
3186 start: selection.end,
3187 end: selection.end,
3188 reversed: false,
3189 goal: SelectionGoal::None,
3190 });
3191 to_unfold.push(selection.start..selection.end);
3192 }
3193 }
3194 self.unfold_ranges(to_unfold, cx);
3195 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3196 }
3197
3198 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3199 self.add_selection(true, cx);
3200 }
3201
3202 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3203 self.add_selection(false, cx);
3204 }
3205
3206 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3207 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3208 let mut selections = self.local_selections::<Point>(cx);
3209 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3210 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3211 let range = oldest_selection.display_range(&display_map).sorted();
3212 let columns = cmp::min(range.start.column(), range.end.column())
3213 ..cmp::max(range.start.column(), range.end.column());
3214
3215 selections.clear();
3216 let mut stack = Vec::new();
3217 for row in range.start.row()..=range.end.row() {
3218 if let Some(selection) = self.build_columnar_selection(
3219 &display_map,
3220 row,
3221 &columns,
3222 oldest_selection.reversed,
3223 ) {
3224 stack.push(selection.id);
3225 selections.push(selection);
3226 }
3227 }
3228
3229 if above {
3230 stack.reverse();
3231 }
3232
3233 AddSelectionsState { above, stack }
3234 });
3235
3236 let last_added_selection = *state.stack.last().unwrap();
3237 let mut new_selections = Vec::new();
3238 if above == state.above {
3239 let end_row = if above {
3240 0
3241 } else {
3242 display_map.max_point().row()
3243 };
3244
3245 'outer: for selection in selections {
3246 if selection.id == last_added_selection {
3247 let range = selection.display_range(&display_map).sorted();
3248 debug_assert_eq!(range.start.row(), range.end.row());
3249 let mut row = range.start.row();
3250 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3251 {
3252 start..end
3253 } else {
3254 cmp::min(range.start.column(), range.end.column())
3255 ..cmp::max(range.start.column(), range.end.column())
3256 };
3257
3258 while row != end_row {
3259 if above {
3260 row -= 1;
3261 } else {
3262 row += 1;
3263 }
3264
3265 if let Some(new_selection) = self.build_columnar_selection(
3266 &display_map,
3267 row,
3268 &columns,
3269 selection.reversed,
3270 ) {
3271 state.stack.push(new_selection.id);
3272 if above {
3273 new_selections.push(new_selection);
3274 new_selections.push(selection);
3275 } else {
3276 new_selections.push(selection);
3277 new_selections.push(new_selection);
3278 }
3279
3280 continue 'outer;
3281 }
3282 }
3283 }
3284
3285 new_selections.push(selection);
3286 }
3287 } else {
3288 new_selections = selections;
3289 new_selections.retain(|s| s.id != last_added_selection);
3290 state.stack.pop();
3291 }
3292
3293 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3294 if state.stack.len() > 1 {
3295 self.add_selections_state = Some(state);
3296 }
3297 }
3298
3299 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3300 let replace_newest = action.0;
3301 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3302 let buffer = &display_map.buffer_snapshot;
3303 let mut selections = self.local_selections::<usize>(cx);
3304 if let Some(mut select_next_state) = self.select_next_state.take() {
3305 let query = &select_next_state.query;
3306 if !select_next_state.done {
3307 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3308 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3309 let mut next_selected_range = None;
3310
3311 let bytes_after_last_selection =
3312 buffer.bytes_in_range(last_selection.end..buffer.len());
3313 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3314 let query_matches = query
3315 .stream_find_iter(bytes_after_last_selection)
3316 .map(|result| (last_selection.end, result))
3317 .chain(
3318 query
3319 .stream_find_iter(bytes_before_first_selection)
3320 .map(|result| (0, result)),
3321 );
3322 for (start_offset, query_match) in query_matches {
3323 let query_match = query_match.unwrap(); // can only fail due to I/O
3324 let offset_range =
3325 start_offset + query_match.start()..start_offset + query_match.end();
3326 let display_range = offset_range.start.to_display_point(&display_map)
3327 ..offset_range.end.to_display_point(&display_map);
3328
3329 if !select_next_state.wordwise
3330 || (!movement::is_inside_word(&display_map, display_range.start)
3331 && !movement::is_inside_word(&display_map, display_range.end))
3332 {
3333 next_selected_range = Some(offset_range);
3334 break;
3335 }
3336 }
3337
3338 if let Some(next_selected_range) = next_selected_range {
3339 if replace_newest {
3340 if let Some(newest_id) =
3341 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3342 {
3343 selections.retain(|s| s.id != newest_id);
3344 }
3345 }
3346 selections.push(Selection {
3347 id: post_inc(&mut self.next_selection_id),
3348 start: next_selected_range.start,
3349 end: next_selected_range.end,
3350 reversed: false,
3351 goal: SelectionGoal::None,
3352 });
3353 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3354 } else {
3355 select_next_state.done = true;
3356 }
3357 }
3358
3359 self.select_next_state = Some(select_next_state);
3360 } else if selections.len() == 1 {
3361 let selection = selections.last_mut().unwrap();
3362 if selection.start == selection.end {
3363 let word_range = movement::surrounding_word(
3364 &display_map,
3365 selection.start.to_display_point(&display_map),
3366 );
3367 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3368 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3369 selection.goal = SelectionGoal::None;
3370 selection.reversed = false;
3371
3372 let query = buffer
3373 .text_for_range(selection.start..selection.end)
3374 .collect::<String>();
3375 let select_state = SelectNextState {
3376 query: AhoCorasick::new_auto_configured(&[query]),
3377 wordwise: true,
3378 done: false,
3379 };
3380 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3381 self.select_next_state = Some(select_state);
3382 } else {
3383 let query = buffer
3384 .text_for_range(selection.start..selection.end)
3385 .collect::<String>();
3386 self.select_next_state = Some(SelectNextState {
3387 query: AhoCorasick::new_auto_configured(&[query]),
3388 wordwise: false,
3389 done: false,
3390 });
3391 self.select_next(action, cx);
3392 }
3393 }
3394 }
3395
3396 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3397 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3398 // as that portion won't be used for detecting if a line is a comment.
3399 let full_comment_prefix =
3400 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3401 prefix.to_string()
3402 } else {
3403 return;
3404 };
3405 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3406 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3407
3408 self.start_transaction(cx);
3409 let mut selections = self.local_selections::<Point>(cx);
3410 let mut all_selection_lines_are_comments = true;
3411 let mut edit_ranges = Vec::new();
3412 let mut last_toggled_row = None;
3413 self.buffer.update(cx, |buffer, cx| {
3414 for selection in &mut selections {
3415 edit_ranges.clear();
3416 let snapshot = buffer.snapshot(cx);
3417
3418 let end_row =
3419 if selection.end.row > selection.start.row && selection.end.column == 0 {
3420 selection.end.row
3421 } else {
3422 selection.end.row + 1
3423 };
3424
3425 for row in selection.start.row..end_row {
3426 // If multiple selections contain a given row, avoid processing that
3427 // row more than once.
3428 if last_toggled_row == Some(row) {
3429 continue;
3430 } else {
3431 last_toggled_row = Some(row);
3432 }
3433
3434 if snapshot.is_line_blank(row) {
3435 continue;
3436 }
3437
3438 let start = Point::new(row, snapshot.indent_column_for_line(row));
3439 let mut line_bytes = snapshot
3440 .bytes_in_range(start..snapshot.max_point())
3441 .flatten()
3442 .copied();
3443
3444 // If this line currently begins with the line comment prefix, then record
3445 // the range containing the prefix.
3446 if all_selection_lines_are_comments
3447 && line_bytes
3448 .by_ref()
3449 .take(comment_prefix.len())
3450 .eq(comment_prefix.bytes())
3451 {
3452 // Include any whitespace that matches the comment prefix.
3453 let matching_whitespace_len = line_bytes
3454 .zip(comment_prefix_whitespace.bytes())
3455 .take_while(|(a, b)| a == b)
3456 .count() as u32;
3457 let end = Point::new(
3458 row,
3459 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3460 );
3461 edit_ranges.push(start..end);
3462 }
3463 // If this line does not begin with the line comment prefix, then record
3464 // the position where the prefix should be inserted.
3465 else {
3466 all_selection_lines_are_comments = false;
3467 edit_ranges.push(start..start);
3468 }
3469 }
3470
3471 if !edit_ranges.is_empty() {
3472 if all_selection_lines_are_comments {
3473 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3474 } else {
3475 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3476 let edit_ranges = edit_ranges.iter().map(|range| {
3477 let position = Point::new(range.start.row, min_column);
3478 position..position
3479 });
3480 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3481 }
3482 }
3483 }
3484 });
3485
3486 self.update_selections(
3487 self.local_selections::<usize>(cx),
3488 Some(Autoscroll::Fit),
3489 cx,
3490 );
3491 self.end_transaction(cx);
3492 }
3493
3494 pub fn select_larger_syntax_node(
3495 &mut self,
3496 _: &SelectLargerSyntaxNode,
3497 cx: &mut ViewContext<Self>,
3498 ) {
3499 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3500 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3501 let buffer = self.buffer.read(cx).snapshot(cx);
3502
3503 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3504 let mut selected_larger_node = false;
3505 let new_selections = old_selections
3506 .iter()
3507 .map(|selection| {
3508 let old_range = selection.start..selection.end;
3509 let mut new_range = old_range.clone();
3510 while let Some(containing_range) =
3511 buffer.range_for_syntax_ancestor(new_range.clone())
3512 {
3513 new_range = containing_range;
3514 if !display_map.intersects_fold(new_range.start)
3515 && !display_map.intersects_fold(new_range.end)
3516 {
3517 break;
3518 }
3519 }
3520
3521 selected_larger_node |= new_range != old_range;
3522 Selection {
3523 id: selection.id,
3524 start: new_range.start,
3525 end: new_range.end,
3526 goal: SelectionGoal::None,
3527 reversed: selection.reversed,
3528 }
3529 })
3530 .collect::<Vec<_>>();
3531
3532 if selected_larger_node {
3533 stack.push(old_selections);
3534 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3535 }
3536 self.select_larger_syntax_node_stack = stack;
3537 }
3538
3539 pub fn select_smaller_syntax_node(
3540 &mut self,
3541 _: &SelectSmallerSyntaxNode,
3542 cx: &mut ViewContext<Self>,
3543 ) {
3544 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3545 if let Some(selections) = stack.pop() {
3546 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3547 }
3548 self.select_larger_syntax_node_stack = stack;
3549 }
3550
3551 pub fn move_to_enclosing_bracket(
3552 &mut self,
3553 _: &MoveToEnclosingBracket,
3554 cx: &mut ViewContext<Self>,
3555 ) {
3556 let mut selections = self.local_selections::<usize>(cx);
3557 let buffer = self.buffer.read(cx).snapshot(cx);
3558 for selection in &mut selections {
3559 if let Some((open_range, close_range)) =
3560 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3561 {
3562 let close_range = close_range.to_inclusive();
3563 let destination = if close_range.contains(&selection.start)
3564 && close_range.contains(&selection.end)
3565 {
3566 open_range.end
3567 } else {
3568 *close_range.start()
3569 };
3570 selection.start = destination;
3571 selection.end = destination;
3572 }
3573 }
3574
3575 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3576 }
3577
3578 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3579 let buffer = self.buffer.read(cx).snapshot(cx);
3580 let selection = self.newest_selection::<usize>(&buffer);
3581 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3582 active_diagnostics
3583 .primary_range
3584 .to_offset(&buffer)
3585 .to_inclusive()
3586 });
3587 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3588 if active_primary_range.contains(&selection.head()) {
3589 *active_primary_range.end()
3590 } else {
3591 selection.head()
3592 }
3593 } else {
3594 selection.head()
3595 };
3596
3597 loop {
3598 let next_group = buffer
3599 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3600 .find_map(|entry| {
3601 if entry.diagnostic.is_primary
3602 && !entry.range.is_empty()
3603 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3604 {
3605 Some((entry.range, entry.diagnostic.group_id))
3606 } else {
3607 None
3608 }
3609 });
3610
3611 if let Some((primary_range, group_id)) = next_group {
3612 self.activate_diagnostics(group_id, cx);
3613 self.update_selections(
3614 vec![Selection {
3615 id: selection.id,
3616 start: primary_range.start,
3617 end: primary_range.start,
3618 reversed: false,
3619 goal: SelectionGoal::None,
3620 }],
3621 Some(Autoscroll::Center),
3622 cx,
3623 );
3624 break;
3625 } else if search_start == 0 {
3626 break;
3627 } else {
3628 // Cycle around to the start of the buffer, potentially moving back to the start of
3629 // the currently active diagnostic.
3630 search_start = 0;
3631 active_primary_range.take();
3632 }
3633 }
3634 }
3635
3636 pub fn go_to_definition(
3637 workspace: &mut Workspace,
3638 _: &GoToDefinition,
3639 cx: &mut ViewContext<Workspace>,
3640 ) {
3641 let active_item = workspace.active_item(cx);
3642 let editor_handle = if let Some(editor) = active_item
3643 .as_ref()
3644 .and_then(|item| item.act_as::<Self>(cx))
3645 {
3646 editor
3647 } else {
3648 return;
3649 };
3650
3651 let editor = editor_handle.read(cx);
3652 let buffer = editor.buffer.read(cx);
3653 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3654 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3655 let definitions = workspace
3656 .project()
3657 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3658 cx.spawn(|workspace, mut cx| async move {
3659 let definitions = definitions.await?;
3660 workspace.update(&mut cx, |workspace, cx| {
3661 for definition in definitions {
3662 let range = definition
3663 .target_range
3664 .to_offset(definition.target_buffer.read(cx));
3665 let target_editor_handle = workspace
3666 .open_item(BufferItemHandle(definition.target_buffer), cx)
3667 .downcast::<Self>()
3668 .unwrap();
3669
3670 target_editor_handle.update(cx, |target_editor, cx| {
3671 // When selecting a definition in a different buffer, disable the nav history
3672 // to avoid creating a history entry at the previous cursor location.
3673 let disabled_history = if editor_handle == target_editor_handle {
3674 None
3675 } else {
3676 target_editor.nav_history.take()
3677 };
3678 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3679 if disabled_history.is_some() {
3680 target_editor.nav_history = disabled_history;
3681 }
3682 });
3683 }
3684 });
3685
3686 Ok::<(), anyhow::Error>(())
3687 })
3688 .detach_and_log_err(cx);
3689 }
3690
3691 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3692 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3693 let buffer = self.buffer.read(cx).snapshot(cx);
3694 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3695 let is_valid = buffer
3696 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3697 .any(|entry| {
3698 entry.diagnostic.is_primary
3699 && !entry.range.is_empty()
3700 && entry.range.start == primary_range_start
3701 && entry.diagnostic.message == active_diagnostics.primary_message
3702 });
3703
3704 if is_valid != active_diagnostics.is_valid {
3705 active_diagnostics.is_valid = is_valid;
3706 let mut new_styles = HashMap::default();
3707 for (block_id, diagnostic) in &active_diagnostics.blocks {
3708 new_styles.insert(
3709 *block_id,
3710 diagnostic_block_renderer(
3711 diagnostic.clone(),
3712 is_valid,
3713 self.build_settings.clone(),
3714 ),
3715 );
3716 }
3717 self.display_map
3718 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3719 }
3720 }
3721 }
3722
3723 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3724 self.dismiss_diagnostics(cx);
3725 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3726 let buffer = self.buffer.read(cx).snapshot(cx);
3727
3728 let mut primary_range = None;
3729 let mut primary_message = None;
3730 let mut group_end = Point::zero();
3731 let diagnostic_group = buffer
3732 .diagnostic_group::<Point>(group_id)
3733 .map(|entry| {
3734 if entry.range.end > group_end {
3735 group_end = entry.range.end;
3736 }
3737 if entry.diagnostic.is_primary {
3738 primary_range = Some(entry.range.clone());
3739 primary_message = Some(entry.diagnostic.message.clone());
3740 }
3741 entry
3742 })
3743 .collect::<Vec<_>>();
3744 let primary_range = primary_range.unwrap();
3745 let primary_message = primary_message.unwrap();
3746 let primary_range =
3747 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3748
3749 let blocks = display_map
3750 .insert_blocks(
3751 diagnostic_group.iter().map(|entry| {
3752 let build_settings = self.build_settings.clone();
3753 let diagnostic = entry.diagnostic.clone();
3754 let message_height = diagnostic.message.lines().count() as u8;
3755
3756 BlockProperties {
3757 position: buffer.anchor_after(entry.range.start),
3758 height: message_height,
3759 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3760 disposition: BlockDisposition::Below,
3761 }
3762 }),
3763 cx,
3764 )
3765 .into_iter()
3766 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3767 .collect();
3768
3769 Some(ActiveDiagnosticGroup {
3770 primary_range,
3771 primary_message,
3772 blocks,
3773 is_valid: true,
3774 })
3775 });
3776 }
3777
3778 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3779 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3780 self.display_map.update(cx, |display_map, cx| {
3781 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3782 });
3783 cx.notify();
3784 }
3785 }
3786
3787 fn build_columnar_selection(
3788 &mut self,
3789 display_map: &DisplaySnapshot,
3790 row: u32,
3791 columns: &Range<u32>,
3792 reversed: bool,
3793 ) -> Option<Selection<Point>> {
3794 let is_empty = columns.start == columns.end;
3795 let line_len = display_map.line_len(row);
3796 if columns.start < line_len || (is_empty && columns.start == line_len) {
3797 let start = DisplayPoint::new(row, columns.start);
3798 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3799 Some(Selection {
3800 id: post_inc(&mut self.next_selection_id),
3801 start: start.to_point(display_map),
3802 end: end.to_point(display_map),
3803 reversed,
3804 goal: SelectionGoal::ColumnRange {
3805 start: columns.start,
3806 end: columns.end,
3807 },
3808 })
3809 } else {
3810 None
3811 }
3812 }
3813
3814 pub fn local_selections_in_range(
3815 &self,
3816 range: Range<Anchor>,
3817 display_map: &DisplaySnapshot,
3818 ) -> Vec<Selection<Point>> {
3819 let buffer = &display_map.buffer_snapshot;
3820
3821 let start_ix = match self
3822 .selections
3823 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3824 {
3825 Ok(ix) | Err(ix) => ix,
3826 };
3827 let end_ix = match self
3828 .selections
3829 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3830 {
3831 Ok(ix) => ix + 1,
3832 Err(ix) => ix,
3833 };
3834
3835 fn point_selection(
3836 selection: &Selection<Anchor>,
3837 buffer: &MultiBufferSnapshot,
3838 ) -> Selection<Point> {
3839 let start = selection.start.to_point(&buffer);
3840 let end = selection.end.to_point(&buffer);
3841 Selection {
3842 id: selection.id,
3843 start,
3844 end,
3845 reversed: selection.reversed,
3846 goal: selection.goal,
3847 }
3848 }
3849
3850 self.selections[start_ix..end_ix]
3851 .iter()
3852 .chain(
3853 self.pending_selection
3854 .as_ref()
3855 .map(|pending| &pending.selection),
3856 )
3857 .map(|s| point_selection(s, &buffer))
3858 .collect()
3859 }
3860
3861 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3862 where
3863 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3864 {
3865 let buffer = self.buffer.read(cx).snapshot(cx);
3866 let mut selections = self
3867 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3868 .peekable();
3869
3870 let mut pending_selection = self.pending_selection::<D>(&buffer);
3871
3872 iter::from_fn(move || {
3873 if let Some(pending) = pending_selection.as_mut() {
3874 while let Some(next_selection) = selections.peek() {
3875 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3876 let next_selection = selections.next().unwrap();
3877 if next_selection.start < pending.start {
3878 pending.start = next_selection.start;
3879 }
3880 if next_selection.end > pending.end {
3881 pending.end = next_selection.end;
3882 }
3883 } else if next_selection.end < pending.start {
3884 return selections.next();
3885 } else {
3886 break;
3887 }
3888 }
3889
3890 pending_selection.take()
3891 } else {
3892 selections.next()
3893 }
3894 })
3895 .collect()
3896 }
3897
3898 fn resolve_selections<'a, D, I>(
3899 &self,
3900 selections: I,
3901 snapshot: &MultiBufferSnapshot,
3902 ) -> impl 'a + Iterator<Item = Selection<D>>
3903 where
3904 D: TextDimension + Ord + Sub<D, Output = D>,
3905 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3906 {
3907 let (to_summarize, selections) = selections.into_iter().tee();
3908 let mut summaries = snapshot
3909 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3910 .into_iter();
3911 selections.map(move |s| Selection {
3912 id: s.id,
3913 start: summaries.next().unwrap(),
3914 end: summaries.next().unwrap(),
3915 reversed: s.reversed,
3916 goal: s.goal,
3917 })
3918 }
3919
3920 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3921 &self,
3922 snapshot: &MultiBufferSnapshot,
3923 ) -> Option<Selection<D>> {
3924 self.pending_selection
3925 .as_ref()
3926 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3927 }
3928
3929 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3930 &self,
3931 selection: &Selection<Anchor>,
3932 buffer: &MultiBufferSnapshot,
3933 ) -> Selection<D> {
3934 Selection {
3935 id: selection.id,
3936 start: selection.start.summary::<D>(&buffer),
3937 end: selection.end.summary::<D>(&buffer),
3938 reversed: selection.reversed,
3939 goal: selection.goal,
3940 }
3941 }
3942
3943 fn selection_count<'a>(&self) -> usize {
3944 let mut count = self.selections.len();
3945 if self.pending_selection.is_some() {
3946 count += 1;
3947 }
3948 count
3949 }
3950
3951 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3952 &self,
3953 snapshot: &MultiBufferSnapshot,
3954 ) -> Selection<D> {
3955 self.selections
3956 .iter()
3957 .min_by_key(|s| s.id)
3958 .map(|selection| self.resolve_selection(selection, snapshot))
3959 .or_else(|| self.pending_selection(snapshot))
3960 .unwrap()
3961 }
3962
3963 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3964 &self,
3965 snapshot: &MultiBufferSnapshot,
3966 ) -> Selection<D> {
3967 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
3968 }
3969
3970 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
3971 self.pending_selection
3972 .as_ref()
3973 .map(|s| &s.selection)
3974 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
3975 }
3976
3977 pub fn update_selections<T>(
3978 &mut self,
3979 mut selections: Vec<Selection<T>>,
3980 autoscroll: Option<Autoscroll>,
3981 cx: &mut ViewContext<Self>,
3982 ) where
3983 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3984 {
3985 let buffer = self.buffer.read(cx).snapshot(cx);
3986 selections.sort_unstable_by_key(|s| s.start);
3987
3988 // Merge overlapping selections.
3989 let mut i = 1;
3990 while i < selections.len() {
3991 if selections[i - 1].end >= selections[i].start {
3992 let removed = selections.remove(i);
3993 if removed.start < selections[i - 1].start {
3994 selections[i - 1].start = removed.start;
3995 }
3996 if removed.end > selections[i - 1].end {
3997 selections[i - 1].end = removed.end;
3998 }
3999 } else {
4000 i += 1;
4001 }
4002 }
4003
4004 if let Some(autoscroll) = autoscroll {
4005 self.request_autoscroll(autoscroll, cx);
4006 }
4007
4008 self.set_selections(
4009 Arc::from_iter(selections.into_iter().map(|selection| {
4010 let end_bias = if selection.end > selection.start {
4011 Bias::Left
4012 } else {
4013 Bias::Right
4014 };
4015 Selection {
4016 id: selection.id,
4017 start: buffer.anchor_after(selection.start),
4018 end: buffer.anchor_at(selection.end, end_bias),
4019 reversed: selection.reversed,
4020 goal: selection.goal,
4021 }
4022 })),
4023 cx,
4024 );
4025 }
4026
4027 /// Compute new ranges for any selections that were located in excerpts that have
4028 /// since been removed.
4029 ///
4030 /// Returns a `HashMap` indicating which selections whose former head position
4031 /// was no longer present. The keys of the map are selection ids. The values are
4032 /// the id of the new excerpt where the head of the selection has been moved.
4033 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4034 let snapshot = self.buffer.read(cx).read(cx);
4035 let anchors_with_status = snapshot.refresh_anchors(
4036 self.selections
4037 .iter()
4038 .flat_map(|selection| [&selection.start, &selection.end]),
4039 );
4040 let offsets =
4041 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4042 let offsets = offsets.chunks(2);
4043 let statuses = anchors_with_status
4044 .chunks(2)
4045 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4046
4047 let mut selections_with_lost_position = HashMap::default();
4048 let new_selections = offsets
4049 .zip(statuses)
4050 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4051 let selection = &self.selections[selection_ix];
4052 let kept_head = if selection.reversed {
4053 kept_start
4054 } else {
4055 kept_end
4056 };
4057 if !kept_head {
4058 selections_with_lost_position
4059 .insert(selection.id, selection.head().excerpt_id.clone());
4060 }
4061
4062 Selection {
4063 id: selection.id,
4064 start: offsets[0],
4065 end: offsets[1],
4066 reversed: selection.reversed,
4067 goal: selection.goal,
4068 }
4069 })
4070 .collect();
4071 drop(snapshot);
4072 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4073 selections_with_lost_position
4074 }
4075
4076 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4077 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4078 self.selections = selections;
4079 if self.focused {
4080 self.buffer.update(cx, |buffer, cx| {
4081 buffer.set_active_selections(&self.selections, cx)
4082 });
4083 }
4084
4085 let buffer = self.buffer.read(cx).snapshot(cx);
4086 self.pending_selection = None;
4087 self.add_selections_state = None;
4088 self.select_next_state = None;
4089 self.select_larger_syntax_node_stack.clear();
4090 self.autoclose_stack.invalidate(&self.selections, &buffer);
4091 self.snippet_stack.invalidate(&self.selections, &buffer);
4092
4093 let new_cursor_position = self
4094 .selections
4095 .iter()
4096 .max_by_key(|s| s.id)
4097 .map(|s| s.head());
4098 if let Some(old_cursor_position) = old_cursor_position {
4099 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4100 self.push_to_nav_history(
4101 old_cursor_position,
4102 Some(new_cursor_position.to_point(&buffer)),
4103 cx,
4104 );
4105 }
4106 }
4107
4108 let completion_menu =
4109 if let Some(ContextMenu::Completion(menu)) = self.context_menu.as_mut() {
4110 Some(menu)
4111 } else {
4112 None
4113 };
4114
4115 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4116 let cursor_position = cursor_position.to_offset(&buffer);
4117 let (word_range, kind) =
4118 buffer.surrounding_word(completion_menu.initial_position.clone());
4119 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4120 {
4121 let query = Self::completion_query(&buffer, cursor_position);
4122 cx.background()
4123 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4124 self.show_completions(&ShowCompletions, cx);
4125 } else {
4126 self.hide_completions(cx);
4127 }
4128 }
4129
4130 self.pause_cursor_blinking(cx);
4131 cx.emit(Event::SelectionsChanged);
4132 }
4133
4134 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4135 self.autoscroll_request = Some(autoscroll);
4136 cx.notify();
4137 }
4138
4139 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4140 self.start_transaction_at(Instant::now(), cx);
4141 }
4142
4143 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4144 self.end_selection(cx);
4145 if let Some(tx_id) = self
4146 .buffer
4147 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4148 {
4149 self.selection_history
4150 .insert(tx_id, (self.selections.clone(), None));
4151 }
4152 }
4153
4154 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4155 self.end_transaction_at(Instant::now(), cx);
4156 }
4157
4158 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4159 if let Some(tx_id) = self
4160 .buffer
4161 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4162 {
4163 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4164 *end_selections = Some(self.selections.clone());
4165 } else {
4166 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4167 }
4168 }
4169 }
4170
4171 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4172 log::info!("Editor::page_up");
4173 }
4174
4175 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4176 log::info!("Editor::page_down");
4177 }
4178
4179 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4180 let mut fold_ranges = Vec::new();
4181
4182 let selections = self.local_selections::<Point>(cx);
4183 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4184 for selection in selections {
4185 let range = selection.display_range(&display_map).sorted();
4186 let buffer_start_row = range.start.to_point(&display_map).row;
4187
4188 for row in (0..=range.end.row()).rev() {
4189 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4190 let fold_range = self.foldable_range_for_line(&display_map, row);
4191 if fold_range.end.row >= buffer_start_row {
4192 fold_ranges.push(fold_range);
4193 if row <= range.start.row() {
4194 break;
4195 }
4196 }
4197 }
4198 }
4199 }
4200
4201 self.fold_ranges(fold_ranges, cx);
4202 }
4203
4204 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4205 let selections = self.local_selections::<Point>(cx);
4206 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4207 let buffer = &display_map.buffer_snapshot;
4208 let ranges = selections
4209 .iter()
4210 .map(|s| {
4211 let range = s.display_range(&display_map).sorted();
4212 let mut start = range.start.to_point(&display_map);
4213 let mut end = range.end.to_point(&display_map);
4214 start.column = 0;
4215 end.column = buffer.line_len(end.row);
4216 start..end
4217 })
4218 .collect::<Vec<_>>();
4219 self.unfold_ranges(ranges, cx);
4220 }
4221
4222 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4223 let max_point = display_map.max_point();
4224 if display_row >= max_point.row() {
4225 false
4226 } else {
4227 let (start_indent, is_blank) = display_map.line_indent(display_row);
4228 if is_blank {
4229 false
4230 } else {
4231 for display_row in display_row + 1..=max_point.row() {
4232 let (indent, is_blank) = display_map.line_indent(display_row);
4233 if !is_blank {
4234 return indent > start_indent;
4235 }
4236 }
4237 false
4238 }
4239 }
4240 }
4241
4242 fn foldable_range_for_line(
4243 &self,
4244 display_map: &DisplaySnapshot,
4245 start_row: u32,
4246 ) -> Range<Point> {
4247 let max_point = display_map.max_point();
4248
4249 let (start_indent, _) = display_map.line_indent(start_row);
4250 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4251 let mut end = None;
4252 for row in start_row + 1..=max_point.row() {
4253 let (indent, is_blank) = display_map.line_indent(row);
4254 if !is_blank && indent <= start_indent {
4255 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4256 break;
4257 }
4258 }
4259
4260 let end = end.unwrap_or(max_point);
4261 return start.to_point(display_map)..end.to_point(display_map);
4262 }
4263
4264 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4265 let selections = self.local_selections::<Point>(cx);
4266 let ranges = selections.into_iter().map(|s| s.start..s.end);
4267 self.fold_ranges(ranges, cx);
4268 }
4269
4270 fn fold_ranges<T: ToOffset>(
4271 &mut self,
4272 ranges: impl IntoIterator<Item = Range<T>>,
4273 cx: &mut ViewContext<Self>,
4274 ) {
4275 let mut ranges = ranges.into_iter().peekable();
4276 if ranges.peek().is_some() {
4277 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4278 self.request_autoscroll(Autoscroll::Fit, cx);
4279 cx.notify();
4280 }
4281 }
4282
4283 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4284 if !ranges.is_empty() {
4285 self.display_map
4286 .update(cx, |map, cx| map.unfold(ranges, cx));
4287 self.request_autoscroll(Autoscroll::Fit, cx);
4288 cx.notify();
4289 }
4290 }
4291
4292 pub fn insert_blocks(
4293 &mut self,
4294 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4295 cx: &mut ViewContext<Self>,
4296 ) -> Vec<BlockId> {
4297 let blocks = self
4298 .display_map
4299 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4300 self.request_autoscroll(Autoscroll::Fit, cx);
4301 blocks
4302 }
4303
4304 pub fn replace_blocks(
4305 &mut self,
4306 blocks: HashMap<BlockId, RenderBlock>,
4307 cx: &mut ViewContext<Self>,
4308 ) {
4309 self.display_map
4310 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4311 self.request_autoscroll(Autoscroll::Fit, cx);
4312 }
4313
4314 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4315 self.display_map.update(cx, |display_map, cx| {
4316 display_map.remove_blocks(block_ids, cx)
4317 });
4318 }
4319
4320 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4321 self.display_map
4322 .update(cx, |map, cx| map.snapshot(cx))
4323 .longest_row()
4324 }
4325
4326 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4327 self.display_map
4328 .update(cx, |map, cx| map.snapshot(cx))
4329 .max_point()
4330 }
4331
4332 pub fn text(&self, cx: &AppContext) -> String {
4333 self.buffer.read(cx).read(cx).text()
4334 }
4335
4336 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4337 self.display_map
4338 .update(cx, |map, cx| map.snapshot(cx))
4339 .text()
4340 }
4341
4342 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4343 self.display_map
4344 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4345 }
4346
4347 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4348 self.highlighted_rows = rows;
4349 }
4350
4351 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4352 self.highlighted_rows.clone()
4353 }
4354
4355 pub fn highlight_ranges<T: 'static>(
4356 &mut self,
4357 ranges: Vec<Range<Anchor>>,
4358 color: Color,
4359 cx: &mut ViewContext<Self>,
4360 ) {
4361 self.highlighted_ranges
4362 .insert(TypeId::of::<T>(), (color, ranges));
4363 cx.notify();
4364 }
4365
4366 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4367 self.highlighted_ranges.remove(&TypeId::of::<T>());
4368 cx.notify();
4369 }
4370
4371 #[cfg(feature = "test-support")]
4372 pub fn all_highlighted_ranges(
4373 &mut self,
4374 cx: &mut ViewContext<Self>,
4375 ) -> Vec<(Range<DisplayPoint>, Color)> {
4376 let snapshot = self.snapshot(cx);
4377 let buffer = &snapshot.buffer_snapshot;
4378 let start = buffer.anchor_before(0);
4379 let end = buffer.anchor_after(buffer.len());
4380 self.highlighted_ranges_in_range(start..end, &snapshot)
4381 }
4382
4383 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4384 self.highlighted_ranges
4385 .get(&TypeId::of::<T>())
4386 .map(|(color, ranges)| (*color, ranges.as_slice()))
4387 }
4388
4389 pub fn highlighted_ranges_in_range(
4390 &self,
4391 search_range: Range<Anchor>,
4392 display_snapshot: &DisplaySnapshot,
4393 ) -> Vec<(Range<DisplayPoint>, Color)> {
4394 let mut results = Vec::new();
4395 let buffer = &display_snapshot.buffer_snapshot;
4396 for (color, ranges) in self.highlighted_ranges.values() {
4397 let start_ix = match ranges.binary_search_by(|probe| {
4398 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4399 if cmp.is_gt() {
4400 Ordering::Greater
4401 } else {
4402 Ordering::Less
4403 }
4404 }) {
4405 Ok(i) | Err(i) => i,
4406 };
4407 for range in &ranges[start_ix..] {
4408 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4409 break;
4410 }
4411 let start = range
4412 .start
4413 .to_point(buffer)
4414 .to_display_point(display_snapshot);
4415 let end = range
4416 .end
4417 .to_point(buffer)
4418 .to_display_point(display_snapshot);
4419 results.push((start..end, *color))
4420 }
4421 }
4422 results
4423 }
4424
4425 fn next_blink_epoch(&mut self) -> usize {
4426 self.blink_epoch += 1;
4427 self.blink_epoch
4428 }
4429
4430 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4431 if !self.focused {
4432 return;
4433 }
4434
4435 self.show_local_cursors = true;
4436 cx.notify();
4437
4438 let epoch = self.next_blink_epoch();
4439 cx.spawn(|this, mut cx| {
4440 let this = this.downgrade();
4441 async move {
4442 Timer::after(CURSOR_BLINK_INTERVAL).await;
4443 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4444 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4445 }
4446 }
4447 })
4448 .detach();
4449 }
4450
4451 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4452 if epoch == self.blink_epoch {
4453 self.blinking_paused = false;
4454 self.blink_cursors(epoch, cx);
4455 }
4456 }
4457
4458 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4459 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4460 self.show_local_cursors = !self.show_local_cursors;
4461 cx.notify();
4462
4463 let epoch = self.next_blink_epoch();
4464 cx.spawn(|this, mut cx| {
4465 let this = this.downgrade();
4466 async move {
4467 Timer::after(CURSOR_BLINK_INTERVAL).await;
4468 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4469 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4470 }
4471 }
4472 })
4473 .detach();
4474 }
4475 }
4476
4477 pub fn show_local_cursors(&self) -> bool {
4478 self.show_local_cursors
4479 }
4480
4481 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4482 self.refresh_active_diagnostics(cx);
4483 cx.notify();
4484 }
4485
4486 fn on_buffer_event(
4487 &mut self,
4488 _: ModelHandle<MultiBuffer>,
4489 event: &language::Event,
4490 cx: &mut ViewContext<Self>,
4491 ) {
4492 match event {
4493 language::Event::Edited => cx.emit(Event::Edited),
4494 language::Event::Dirtied => cx.emit(Event::Dirtied),
4495 language::Event::Saved => cx.emit(Event::Saved),
4496 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4497 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4498 language::Event::Closed => cx.emit(Event::Closed),
4499 _ => {}
4500 }
4501 }
4502
4503 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4504 cx.notify();
4505 }
4506}
4507
4508impl EditorSnapshot {
4509 pub fn is_focused(&self) -> bool {
4510 self.is_focused
4511 }
4512
4513 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4514 self.placeholder_text.as_ref()
4515 }
4516
4517 pub fn scroll_position(&self) -> Vector2F {
4518 compute_scroll_position(
4519 &self.display_snapshot,
4520 self.scroll_position,
4521 &self.scroll_top_anchor,
4522 )
4523 }
4524}
4525
4526impl Deref for EditorSnapshot {
4527 type Target = DisplaySnapshot;
4528
4529 fn deref(&self) -> &Self::Target {
4530 &self.display_snapshot
4531 }
4532}
4533
4534impl EditorSettings {
4535 #[cfg(any(test, feature = "test-support"))]
4536 pub fn test(cx: &AppContext) -> Self {
4537 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4538
4539 Self {
4540 tab_size: 4,
4541 soft_wrap: SoftWrap::None,
4542 style: {
4543 let font_cache: &gpui::FontCache = cx.font_cache();
4544 let font_family_name = Arc::from("Monaco");
4545 let font_properties = Default::default();
4546 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4547 let font_id = font_cache
4548 .select_font(font_family_id, &font_properties)
4549 .unwrap();
4550 let text = gpui::fonts::TextStyle {
4551 font_family_name,
4552 font_family_id,
4553 font_id,
4554 font_size: 14.,
4555 color: gpui::color::Color::from_u32(0xff0000ff),
4556 font_properties,
4557 underline: None,
4558 };
4559 let default_diagnostic_style = DiagnosticStyle {
4560 message: text.clone().into(),
4561 header: Default::default(),
4562 text_scale_factor: 1.,
4563 };
4564 EditorStyle {
4565 text: text.clone(),
4566 placeholder_text: None,
4567 background: Default::default(),
4568 gutter_background: Default::default(),
4569 gutter_padding_factor: 2.,
4570 active_line_background: Default::default(),
4571 highlighted_line_background: Default::default(),
4572 line_number: Default::default(),
4573 line_number_active: Default::default(),
4574 selection: Default::default(),
4575 guest_selections: Default::default(),
4576 syntax: Default::default(),
4577 diagnostic_path_header: DiagnosticPathHeader {
4578 container: Default::default(),
4579 filename: ContainedText {
4580 container: Default::default(),
4581 text: text.clone(),
4582 },
4583 path: ContainedText {
4584 container: Default::default(),
4585 text: text.clone(),
4586 },
4587 text_scale_factor: 1.,
4588 },
4589 diagnostic_header: DiagnosticHeader {
4590 container: Default::default(),
4591 message: ContainedLabel {
4592 container: Default::default(),
4593 label: text.clone().into(),
4594 },
4595 code: ContainedText {
4596 container: Default::default(),
4597 text: text.clone(),
4598 },
4599 icon_width_factor: 1.,
4600 text_scale_factor: 1.,
4601 },
4602 error_diagnostic: default_diagnostic_style.clone(),
4603 invalid_error_diagnostic: default_diagnostic_style.clone(),
4604 warning_diagnostic: default_diagnostic_style.clone(),
4605 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4606 information_diagnostic: default_diagnostic_style.clone(),
4607 invalid_information_diagnostic: default_diagnostic_style.clone(),
4608 hint_diagnostic: default_diagnostic_style.clone(),
4609 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4610 autocomplete: Default::default(),
4611 }
4612 },
4613 }
4614 }
4615}
4616
4617fn compute_scroll_position(
4618 snapshot: &DisplaySnapshot,
4619 mut scroll_position: Vector2F,
4620 scroll_top_anchor: &Option<Anchor>,
4621) -> Vector2F {
4622 if let Some(anchor) = scroll_top_anchor {
4623 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4624 scroll_position.set_y(scroll_top + scroll_position.y());
4625 } else {
4626 scroll_position.set_y(0.);
4627 }
4628 scroll_position
4629}
4630
4631#[derive(Copy, Clone)]
4632pub enum Event {
4633 Activate,
4634 Edited,
4635 Blurred,
4636 Dirtied,
4637 Saved,
4638 TitleChanged,
4639 SelectionsChanged,
4640 Closed,
4641}
4642
4643impl Entity for Editor {
4644 type Event = Event;
4645}
4646
4647impl View for Editor {
4648 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4649 let settings = (self.build_settings)(cx);
4650 self.display_map.update(cx, |map, cx| {
4651 map.set_font(
4652 settings.style.text.font_id,
4653 settings.style.text.font_size,
4654 cx,
4655 )
4656 });
4657 EditorElement::new(self.handle.clone(), settings).boxed()
4658 }
4659
4660 fn ui_name() -> &'static str {
4661 "Editor"
4662 }
4663
4664 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4665 self.focused = true;
4666 self.blink_cursors(self.blink_epoch, cx);
4667 self.buffer.update(cx, |buffer, cx| {
4668 buffer.avoid_grouping_next_transaction(cx);
4669 buffer.set_active_selections(&self.selections, cx)
4670 });
4671 }
4672
4673 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4674 self.focused = false;
4675 self.show_local_cursors = false;
4676 self.buffer
4677 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4678 self.hide_completions(cx);
4679 cx.emit(Event::Blurred);
4680 cx.notify();
4681 }
4682
4683 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4684 let mut cx = Self::default_keymap_context();
4685 let mode = match self.mode {
4686 EditorMode::SingleLine => "single_line",
4687 EditorMode::AutoHeight { .. } => "auto_height",
4688 EditorMode::Full => "full",
4689 };
4690 cx.map.insert("mode".into(), mode.into());
4691 if self.context_menu.is_some() {
4692 cx.set.insert("completing".into());
4693 }
4694 cx
4695 }
4696}
4697
4698impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4699 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4700 let start = self.start.to_point(buffer);
4701 let end = self.end.to_point(buffer);
4702 if self.reversed {
4703 end..start
4704 } else {
4705 start..end
4706 }
4707 }
4708
4709 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4710 let start = self.start.to_offset(buffer);
4711 let end = self.end.to_offset(buffer);
4712 if self.reversed {
4713 end..start
4714 } else {
4715 start..end
4716 }
4717 }
4718
4719 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4720 let start = self
4721 .start
4722 .to_point(&map.buffer_snapshot)
4723 .to_display_point(map);
4724 let end = self
4725 .end
4726 .to_point(&map.buffer_snapshot)
4727 .to_display_point(map);
4728 if self.reversed {
4729 end..start
4730 } else {
4731 start..end
4732 }
4733 }
4734
4735 fn spanned_rows(
4736 &self,
4737 include_end_if_at_line_start: bool,
4738 map: &DisplaySnapshot,
4739 ) -> Range<u32> {
4740 let start = self.start.to_point(&map.buffer_snapshot);
4741 let mut end = self.end.to_point(&map.buffer_snapshot);
4742 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4743 end.row -= 1;
4744 }
4745
4746 let buffer_start = map.prev_line_boundary(start).0;
4747 let buffer_end = map.next_line_boundary(end).0;
4748 buffer_start.row..buffer_end.row + 1
4749 }
4750}
4751
4752impl<T: InvalidationRegion> InvalidationStack<T> {
4753 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4754 where
4755 S: Clone + ToOffset,
4756 {
4757 while let Some(region) = self.last() {
4758 let all_selections_inside_invalidation_ranges =
4759 if selections.len() == region.ranges().len() {
4760 selections
4761 .iter()
4762 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4763 .all(|(selection, invalidation_range)| {
4764 let head = selection.head().to_offset(&buffer);
4765 invalidation_range.start <= head && invalidation_range.end >= head
4766 })
4767 } else {
4768 false
4769 };
4770
4771 if all_selections_inside_invalidation_ranges {
4772 break;
4773 } else {
4774 self.pop();
4775 }
4776 }
4777 }
4778}
4779
4780impl<T> Default for InvalidationStack<T> {
4781 fn default() -> Self {
4782 Self(Default::default())
4783 }
4784}
4785
4786impl<T> Deref for InvalidationStack<T> {
4787 type Target = Vec<T>;
4788
4789 fn deref(&self) -> &Self::Target {
4790 &self.0
4791 }
4792}
4793
4794impl<T> DerefMut for InvalidationStack<T> {
4795 fn deref_mut(&mut self) -> &mut Self::Target {
4796 &mut self.0
4797 }
4798}
4799
4800impl InvalidationRegion for BracketPairState {
4801 fn ranges(&self) -> &[Range<Anchor>] {
4802 &self.ranges
4803 }
4804}
4805
4806impl InvalidationRegion for SnippetState {
4807 fn ranges(&self) -> &[Range<Anchor>] {
4808 &self.ranges[self.active_index]
4809 }
4810}
4811
4812pub fn diagnostic_block_renderer(
4813 diagnostic: Diagnostic,
4814 is_valid: bool,
4815 build_settings: BuildSettings,
4816) -> RenderBlock {
4817 let mut highlighted_lines = Vec::new();
4818 for line in diagnostic.message.lines() {
4819 highlighted_lines.push(highlight_diagnostic_message(line));
4820 }
4821
4822 Arc::new(move |cx: &BlockContext| {
4823 let settings = build_settings(cx);
4824 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4825 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4826 Flex::column()
4827 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4828 Label::new(
4829 line.clone(),
4830 style.message.clone().with_font_size(font_size),
4831 )
4832 .with_highlights(highlights.clone())
4833 .contained()
4834 .with_margin_left(cx.anchor_x)
4835 .boxed()
4836 }))
4837 .aligned()
4838 .left()
4839 .boxed()
4840 })
4841}
4842
4843pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4844 let mut message_without_backticks = String::new();
4845 let mut prev_offset = 0;
4846 let mut inside_block = false;
4847 let mut highlights = Vec::new();
4848 for (match_ix, (offset, _)) in message
4849 .match_indices('`')
4850 .chain([(message.len(), "")])
4851 .enumerate()
4852 {
4853 message_without_backticks.push_str(&message[prev_offset..offset]);
4854 if inside_block {
4855 highlights.extend(prev_offset - match_ix..offset - match_ix);
4856 }
4857
4858 inside_block = !inside_block;
4859 prev_offset = offset + 1;
4860 }
4861
4862 (message_without_backticks, highlights)
4863}
4864
4865pub fn diagnostic_style(
4866 severity: DiagnosticSeverity,
4867 valid: bool,
4868 style: &EditorStyle,
4869) -> DiagnosticStyle {
4870 match (severity, valid) {
4871 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
4872 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
4873 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
4874 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
4875 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
4876 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
4877 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
4878 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
4879 _ => DiagnosticStyle {
4880 message: style.text.clone().into(),
4881 header: Default::default(),
4882 text_scale_factor: 1.,
4883 },
4884 }
4885}
4886
4887pub fn settings_builder(
4888 buffer: WeakModelHandle<MultiBuffer>,
4889 settings: watch::Receiver<workspace::Settings>,
4890) -> BuildSettings {
4891 Arc::new(move |cx| {
4892 let settings = settings.borrow();
4893 let font_cache = cx.font_cache();
4894 let font_family_id = settings.buffer_font_family;
4895 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
4896 let font_properties = Default::default();
4897 let font_id = font_cache
4898 .select_font(font_family_id, &font_properties)
4899 .unwrap();
4900 let font_size = settings.buffer_font_size;
4901
4902 let mut theme = settings.theme.editor.clone();
4903 theme.text = TextStyle {
4904 color: theme.text.color,
4905 font_family_name,
4906 font_family_id,
4907 font_id,
4908 font_size,
4909 font_properties,
4910 underline: None,
4911 };
4912 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
4913 let soft_wrap = match settings.soft_wrap(language) {
4914 workspace::settings::SoftWrap::None => SoftWrap::None,
4915 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
4916 workspace::settings::SoftWrap::PreferredLineLength => {
4917 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
4918 }
4919 };
4920
4921 EditorSettings {
4922 tab_size: settings.tab_size,
4923 soft_wrap,
4924 style: theme,
4925 }
4926 })
4927}
4928
4929pub fn combine_syntax_and_fuzzy_match_highlights(
4930 text: &str,
4931 default_style: HighlightStyle,
4932 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
4933 match_indices: &[usize],
4934) -> Vec<(Range<usize>, HighlightStyle)> {
4935 let mut result = Vec::new();
4936 let mut match_indices = match_indices.iter().copied().peekable();
4937
4938 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
4939 {
4940 syntax_highlight.font_properties.weight(Default::default());
4941
4942 // Add highlights for any fuzzy match characters before the next
4943 // syntax highlight range.
4944 while let Some(&match_index) = match_indices.peek() {
4945 if match_index >= range.start {
4946 break;
4947 }
4948 match_indices.next();
4949 let end_index = char_ix_after(match_index, text);
4950 let mut match_style = default_style;
4951 match_style.font_properties.weight(fonts::Weight::BOLD);
4952 result.push((match_index..end_index, match_style));
4953 }
4954
4955 if range.start == usize::MAX {
4956 break;
4957 }
4958
4959 // Add highlights for any fuzzy match characters within the
4960 // syntax highlight range.
4961 let mut offset = range.start;
4962 while let Some(&match_index) = match_indices.peek() {
4963 if match_index >= range.end {
4964 break;
4965 }
4966
4967 match_indices.next();
4968 if match_index > offset {
4969 result.push((offset..match_index, syntax_highlight));
4970 }
4971
4972 let mut end_index = char_ix_after(match_index, text);
4973 while let Some(&next_match_index) = match_indices.peek() {
4974 if next_match_index == end_index && next_match_index < range.end {
4975 end_index = char_ix_after(next_match_index, text);
4976 match_indices.next();
4977 } else {
4978 break;
4979 }
4980 }
4981
4982 let mut match_style = syntax_highlight;
4983 match_style.font_properties.weight(fonts::Weight::BOLD);
4984 result.push((match_index..end_index, match_style));
4985 offset = end_index;
4986 }
4987
4988 if offset < range.end {
4989 result.push((offset..range.end, syntax_highlight));
4990 }
4991 }
4992
4993 fn char_ix_after(ix: usize, text: &str) -> usize {
4994 ix + text[ix..].chars().next().unwrap().len_utf8()
4995 }
4996
4997 result
4998}
4999
5000fn styled_runs_for_completion_label<'a>(
5001 label: &'a CompletionLabel,
5002 default_color: Color,
5003 syntax_theme: &'a theme::SyntaxTheme,
5004) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5005 const MUTED_OPACITY: usize = 165;
5006
5007 let mut muted_default_style = HighlightStyle {
5008 color: default_color,
5009 ..Default::default()
5010 };
5011 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5012
5013 let mut prev_end = label.filter_range.end;
5014 label
5015 .runs
5016 .iter()
5017 .enumerate()
5018 .flat_map(move |(ix, (range, highlight_id))| {
5019 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5020 style
5021 } else {
5022 return Default::default();
5023 };
5024 let mut muted_style = style.clone();
5025 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5026
5027 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5028 if range.start >= label.filter_range.end {
5029 if range.start > prev_end {
5030 runs.push((prev_end..range.start, muted_default_style));
5031 }
5032 runs.push((range.clone(), muted_style));
5033 } else if range.end <= label.filter_range.end {
5034 runs.push((range.clone(), style));
5035 } else {
5036 runs.push((range.start..label.filter_range.end, style));
5037 runs.push((label.filter_range.end..range.end, muted_style));
5038 }
5039 prev_end = cmp::max(prev_end, range.end);
5040
5041 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5042 runs.push((prev_end..label.text.len(), muted_default_style));
5043 }
5044
5045 runs
5046 })
5047}
5048
5049#[cfg(test)]
5050mod tests {
5051 use super::*;
5052 use language::{FakeFile, LanguageConfig};
5053 use lsp::FakeLanguageServer;
5054 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
5055 use text::Point;
5056 use unindent::Unindent;
5057 use util::test::sample_text;
5058
5059 #[gpui::test]
5060 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5061 let mut now = Instant::now();
5062 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5063 let group_interval = buffer.read(cx).transaction_group_interval();
5064 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5065 let settings = EditorSettings::test(cx);
5066 let (_, editor) = cx.add_window(Default::default(), |cx| {
5067 build_editor(buffer.clone(), settings, cx)
5068 });
5069
5070 editor.update(cx, |editor, cx| {
5071 editor.start_transaction_at(now, cx);
5072 editor.select_ranges([2..4], None, cx);
5073 editor.insert("cd", cx);
5074 editor.end_transaction_at(now, cx);
5075 assert_eq!(editor.text(cx), "12cd56");
5076 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5077
5078 editor.start_transaction_at(now, cx);
5079 editor.select_ranges([4..5], None, cx);
5080 editor.insert("e", cx);
5081 editor.end_transaction_at(now, cx);
5082 assert_eq!(editor.text(cx), "12cde6");
5083 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5084
5085 now += group_interval + Duration::from_millis(1);
5086 editor.select_ranges([2..2], None, cx);
5087
5088 // Simulate an edit in another editor
5089 buffer.update(cx, |buffer, cx| {
5090 buffer.start_transaction_at(now, cx);
5091 buffer.edit([0..1], "a", cx);
5092 buffer.edit([1..1], "b", cx);
5093 buffer.end_transaction_at(now, cx);
5094 });
5095
5096 assert_eq!(editor.text(cx), "ab2cde6");
5097 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5098
5099 // Last transaction happened past the group interval in a different editor.
5100 // Undo it individually and don't restore selections.
5101 editor.undo(&Undo, cx);
5102 assert_eq!(editor.text(cx), "12cde6");
5103 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5104
5105 // First two transactions happened within the group interval in this editor.
5106 // Undo them together and restore selections.
5107 editor.undo(&Undo, cx);
5108 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5109 assert_eq!(editor.text(cx), "123456");
5110 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5111
5112 // Redo the first two transactions together.
5113 editor.redo(&Redo, cx);
5114 assert_eq!(editor.text(cx), "12cde6");
5115 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5116
5117 // Redo the last transaction on its own.
5118 editor.redo(&Redo, cx);
5119 assert_eq!(editor.text(cx), "ab2cde6");
5120 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5121
5122 // Test empty transactions.
5123 editor.start_transaction_at(now, cx);
5124 editor.end_transaction_at(now, cx);
5125 editor.undo(&Undo, cx);
5126 assert_eq!(editor.text(cx), "12cde6");
5127 });
5128 }
5129
5130 #[gpui::test]
5131 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5132 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5133 let settings = EditorSettings::test(cx);
5134 let (_, editor) =
5135 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5136
5137 editor.update(cx, |view, cx| {
5138 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5139 });
5140
5141 assert_eq!(
5142 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5143 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5144 );
5145
5146 editor.update(cx, |view, cx| {
5147 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5148 });
5149
5150 assert_eq!(
5151 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5152 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5153 );
5154
5155 editor.update(cx, |view, cx| {
5156 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5157 });
5158
5159 assert_eq!(
5160 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5161 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5162 );
5163
5164 editor.update(cx, |view, cx| {
5165 view.end_selection(cx);
5166 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5167 });
5168
5169 assert_eq!(
5170 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5171 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5172 );
5173
5174 editor.update(cx, |view, cx| {
5175 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5176 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5177 });
5178
5179 assert_eq!(
5180 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5181 [
5182 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5183 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5184 ]
5185 );
5186
5187 editor.update(cx, |view, cx| {
5188 view.end_selection(cx);
5189 });
5190
5191 assert_eq!(
5192 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5193 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5194 );
5195 }
5196
5197 #[gpui::test]
5198 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5199 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5200 let settings = EditorSettings::test(cx);
5201 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5202
5203 view.update(cx, |view, cx| {
5204 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5205 assert_eq!(
5206 view.selected_display_ranges(cx),
5207 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5208 );
5209 });
5210
5211 view.update(cx, |view, cx| {
5212 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5213 assert_eq!(
5214 view.selected_display_ranges(cx),
5215 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5216 );
5217 });
5218
5219 view.update(cx, |view, cx| {
5220 view.cancel(&Cancel, cx);
5221 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5222 assert_eq!(
5223 view.selected_display_ranges(cx),
5224 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5225 );
5226 });
5227 }
5228
5229 #[gpui::test]
5230 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5231 cx.add_window(Default::default(), |cx| {
5232 use workspace::ItemView;
5233 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5234 let settings = EditorSettings::test(&cx);
5235 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5236 let mut editor = build_editor(buffer.clone(), settings, cx);
5237 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5238
5239 // Move the cursor a small distance.
5240 // Nothing is added to the navigation history.
5241 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5242 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5243 assert!(nav_history.borrow_mut().pop_backward().is_none());
5244
5245 // Move the cursor a large distance.
5246 // The history can jump back to the previous position.
5247 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5248 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5249 editor.navigate(nav_entry.data.unwrap(), cx);
5250 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5251 assert_eq!(
5252 editor.selected_display_ranges(cx),
5253 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5254 );
5255
5256 // Move the cursor a small distance via the mouse.
5257 // Nothing is added to the navigation history.
5258 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5259 editor.end_selection(cx);
5260 assert_eq!(
5261 editor.selected_display_ranges(cx),
5262 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5263 );
5264 assert!(nav_history.borrow_mut().pop_backward().is_none());
5265
5266 // Move the cursor a large distance via the mouse.
5267 // The history can jump back to the previous position.
5268 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5269 editor.end_selection(cx);
5270 assert_eq!(
5271 editor.selected_display_ranges(cx),
5272 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5273 );
5274 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5275 editor.navigate(nav_entry.data.unwrap(), cx);
5276 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5277 assert_eq!(
5278 editor.selected_display_ranges(cx),
5279 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5280 );
5281
5282 editor
5283 });
5284 }
5285
5286 #[gpui::test]
5287 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5288 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5289 let settings = EditorSettings::test(cx);
5290 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5291
5292 view.update(cx, |view, cx| {
5293 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5294 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5295 view.end_selection(cx);
5296
5297 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5298 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5299 view.end_selection(cx);
5300 assert_eq!(
5301 view.selected_display_ranges(cx),
5302 [
5303 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5304 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5305 ]
5306 );
5307 });
5308
5309 view.update(cx, |view, cx| {
5310 view.cancel(&Cancel, cx);
5311 assert_eq!(
5312 view.selected_display_ranges(cx),
5313 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5314 );
5315 });
5316
5317 view.update(cx, |view, cx| {
5318 view.cancel(&Cancel, cx);
5319 assert_eq!(
5320 view.selected_display_ranges(cx),
5321 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5322 );
5323 });
5324 }
5325
5326 #[gpui::test]
5327 fn test_fold(cx: &mut gpui::MutableAppContext) {
5328 let buffer = MultiBuffer::build_simple(
5329 &"
5330 impl Foo {
5331 // Hello!
5332
5333 fn a() {
5334 1
5335 }
5336
5337 fn b() {
5338 2
5339 }
5340
5341 fn c() {
5342 3
5343 }
5344 }
5345 "
5346 .unindent(),
5347 cx,
5348 );
5349 let settings = EditorSettings::test(&cx);
5350 let (_, view) = cx.add_window(Default::default(), |cx| {
5351 build_editor(buffer.clone(), settings, cx)
5352 });
5353
5354 view.update(cx, |view, cx| {
5355 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5356 view.fold(&Fold, cx);
5357 assert_eq!(
5358 view.display_text(cx),
5359 "
5360 impl Foo {
5361 // Hello!
5362
5363 fn a() {
5364 1
5365 }
5366
5367 fn b() {…
5368 }
5369
5370 fn c() {…
5371 }
5372 }
5373 "
5374 .unindent(),
5375 );
5376
5377 view.fold(&Fold, cx);
5378 assert_eq!(
5379 view.display_text(cx),
5380 "
5381 impl Foo {…
5382 }
5383 "
5384 .unindent(),
5385 );
5386
5387 view.unfold(&Unfold, cx);
5388 assert_eq!(
5389 view.display_text(cx),
5390 "
5391 impl Foo {
5392 // Hello!
5393
5394 fn a() {
5395 1
5396 }
5397
5398 fn b() {…
5399 }
5400
5401 fn c() {…
5402 }
5403 }
5404 "
5405 .unindent(),
5406 );
5407
5408 view.unfold(&Unfold, cx);
5409 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5410 });
5411 }
5412
5413 #[gpui::test]
5414 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5415 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5416 let settings = EditorSettings::test(&cx);
5417 let (_, view) = cx.add_window(Default::default(), |cx| {
5418 build_editor(buffer.clone(), settings, cx)
5419 });
5420
5421 buffer.update(cx, |buffer, cx| {
5422 buffer.edit(
5423 vec![
5424 Point::new(1, 0)..Point::new(1, 0),
5425 Point::new(1, 1)..Point::new(1, 1),
5426 ],
5427 "\t",
5428 cx,
5429 );
5430 });
5431
5432 view.update(cx, |view, cx| {
5433 assert_eq!(
5434 view.selected_display_ranges(cx),
5435 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5436 );
5437
5438 view.move_down(&MoveDown, cx);
5439 assert_eq!(
5440 view.selected_display_ranges(cx),
5441 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5442 );
5443
5444 view.move_right(&MoveRight, cx);
5445 assert_eq!(
5446 view.selected_display_ranges(cx),
5447 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5448 );
5449
5450 view.move_left(&MoveLeft, cx);
5451 assert_eq!(
5452 view.selected_display_ranges(cx),
5453 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5454 );
5455
5456 view.move_up(&MoveUp, cx);
5457 assert_eq!(
5458 view.selected_display_ranges(cx),
5459 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5460 );
5461
5462 view.move_to_end(&MoveToEnd, cx);
5463 assert_eq!(
5464 view.selected_display_ranges(cx),
5465 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5466 );
5467
5468 view.move_to_beginning(&MoveToBeginning, cx);
5469 assert_eq!(
5470 view.selected_display_ranges(cx),
5471 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5472 );
5473
5474 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5475 view.select_to_beginning(&SelectToBeginning, cx);
5476 assert_eq!(
5477 view.selected_display_ranges(cx),
5478 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5479 );
5480
5481 view.select_to_end(&SelectToEnd, cx);
5482 assert_eq!(
5483 view.selected_display_ranges(cx),
5484 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5485 );
5486 });
5487 }
5488
5489 #[gpui::test]
5490 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5491 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5492 let settings = EditorSettings::test(&cx);
5493 let (_, view) = cx.add_window(Default::default(), |cx| {
5494 build_editor(buffer.clone(), settings, cx)
5495 });
5496
5497 assert_eq!('ⓐ'.len_utf8(), 3);
5498 assert_eq!('α'.len_utf8(), 2);
5499
5500 view.update(cx, |view, cx| {
5501 view.fold_ranges(
5502 vec![
5503 Point::new(0, 6)..Point::new(0, 12),
5504 Point::new(1, 2)..Point::new(1, 4),
5505 Point::new(2, 4)..Point::new(2, 8),
5506 ],
5507 cx,
5508 );
5509 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5510
5511 view.move_right(&MoveRight, cx);
5512 assert_eq!(
5513 view.selected_display_ranges(cx),
5514 &[empty_range(0, "ⓐ".len())]
5515 );
5516 view.move_right(&MoveRight, cx);
5517 assert_eq!(
5518 view.selected_display_ranges(cx),
5519 &[empty_range(0, "ⓐⓑ".len())]
5520 );
5521 view.move_right(&MoveRight, cx);
5522 assert_eq!(
5523 view.selected_display_ranges(cx),
5524 &[empty_range(0, "ⓐⓑ…".len())]
5525 );
5526
5527 view.move_down(&MoveDown, cx);
5528 assert_eq!(
5529 view.selected_display_ranges(cx),
5530 &[empty_range(1, "ab…".len())]
5531 );
5532 view.move_left(&MoveLeft, cx);
5533 assert_eq!(
5534 view.selected_display_ranges(cx),
5535 &[empty_range(1, "ab".len())]
5536 );
5537 view.move_left(&MoveLeft, cx);
5538 assert_eq!(
5539 view.selected_display_ranges(cx),
5540 &[empty_range(1, "a".len())]
5541 );
5542
5543 view.move_down(&MoveDown, cx);
5544 assert_eq!(
5545 view.selected_display_ranges(cx),
5546 &[empty_range(2, "α".len())]
5547 );
5548 view.move_right(&MoveRight, cx);
5549 assert_eq!(
5550 view.selected_display_ranges(cx),
5551 &[empty_range(2, "αβ".len())]
5552 );
5553 view.move_right(&MoveRight, cx);
5554 assert_eq!(
5555 view.selected_display_ranges(cx),
5556 &[empty_range(2, "αβ…".len())]
5557 );
5558 view.move_right(&MoveRight, cx);
5559 assert_eq!(
5560 view.selected_display_ranges(cx),
5561 &[empty_range(2, "αβ…ε".len())]
5562 );
5563
5564 view.move_up(&MoveUp, cx);
5565 assert_eq!(
5566 view.selected_display_ranges(cx),
5567 &[empty_range(1, "ab…e".len())]
5568 );
5569 view.move_up(&MoveUp, cx);
5570 assert_eq!(
5571 view.selected_display_ranges(cx),
5572 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5573 );
5574 view.move_left(&MoveLeft, cx);
5575 assert_eq!(
5576 view.selected_display_ranges(cx),
5577 &[empty_range(0, "ⓐⓑ…".len())]
5578 );
5579 view.move_left(&MoveLeft, cx);
5580 assert_eq!(
5581 view.selected_display_ranges(cx),
5582 &[empty_range(0, "ⓐⓑ".len())]
5583 );
5584 view.move_left(&MoveLeft, cx);
5585 assert_eq!(
5586 view.selected_display_ranges(cx),
5587 &[empty_range(0, "ⓐ".len())]
5588 );
5589 });
5590 }
5591
5592 #[gpui::test]
5593 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5594 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5595 let settings = EditorSettings::test(&cx);
5596 let (_, view) = cx.add_window(Default::default(), |cx| {
5597 build_editor(buffer.clone(), settings, cx)
5598 });
5599 view.update(cx, |view, cx| {
5600 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5601 view.move_down(&MoveDown, cx);
5602 assert_eq!(
5603 view.selected_display_ranges(cx),
5604 &[empty_range(1, "abcd".len())]
5605 );
5606
5607 view.move_down(&MoveDown, cx);
5608 assert_eq!(
5609 view.selected_display_ranges(cx),
5610 &[empty_range(2, "αβγ".len())]
5611 );
5612
5613 view.move_down(&MoveDown, cx);
5614 assert_eq!(
5615 view.selected_display_ranges(cx),
5616 &[empty_range(3, "abcd".len())]
5617 );
5618
5619 view.move_down(&MoveDown, cx);
5620 assert_eq!(
5621 view.selected_display_ranges(cx),
5622 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5623 );
5624
5625 view.move_up(&MoveUp, cx);
5626 assert_eq!(
5627 view.selected_display_ranges(cx),
5628 &[empty_range(3, "abcd".len())]
5629 );
5630
5631 view.move_up(&MoveUp, cx);
5632 assert_eq!(
5633 view.selected_display_ranges(cx),
5634 &[empty_range(2, "αβγ".len())]
5635 );
5636 });
5637 }
5638
5639 #[gpui::test]
5640 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5641 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5642 let settings = EditorSettings::test(&cx);
5643 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5644 view.update(cx, |view, cx| {
5645 view.select_display_ranges(
5646 &[
5647 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5648 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5649 ],
5650 cx,
5651 );
5652 });
5653
5654 view.update(cx, |view, cx| {
5655 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5656 assert_eq!(
5657 view.selected_display_ranges(cx),
5658 &[
5659 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5660 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5661 ]
5662 );
5663 });
5664
5665 view.update(cx, |view, cx| {
5666 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5667 assert_eq!(
5668 view.selected_display_ranges(cx),
5669 &[
5670 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5671 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5672 ]
5673 );
5674 });
5675
5676 view.update(cx, |view, cx| {
5677 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5678 assert_eq!(
5679 view.selected_display_ranges(cx),
5680 &[
5681 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5682 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5683 ]
5684 );
5685 });
5686
5687 view.update(cx, |view, cx| {
5688 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5689 assert_eq!(
5690 view.selected_display_ranges(cx),
5691 &[
5692 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5693 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5694 ]
5695 );
5696 });
5697
5698 // Moving to the end of line again is a no-op.
5699 view.update(cx, |view, cx| {
5700 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5701 assert_eq!(
5702 view.selected_display_ranges(cx),
5703 &[
5704 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5705 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5706 ]
5707 );
5708 });
5709
5710 view.update(cx, |view, cx| {
5711 view.move_left(&MoveLeft, cx);
5712 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5713 assert_eq!(
5714 view.selected_display_ranges(cx),
5715 &[
5716 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5717 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5718 ]
5719 );
5720 });
5721
5722 view.update(cx, |view, cx| {
5723 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5724 assert_eq!(
5725 view.selected_display_ranges(cx),
5726 &[
5727 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5728 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5729 ]
5730 );
5731 });
5732
5733 view.update(cx, |view, cx| {
5734 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5735 assert_eq!(
5736 view.selected_display_ranges(cx),
5737 &[
5738 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5739 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5740 ]
5741 );
5742 });
5743
5744 view.update(cx, |view, cx| {
5745 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5746 assert_eq!(
5747 view.selected_display_ranges(cx),
5748 &[
5749 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5750 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5751 ]
5752 );
5753 });
5754
5755 view.update(cx, |view, cx| {
5756 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5757 assert_eq!(view.display_text(cx), "ab\n de");
5758 assert_eq!(
5759 view.selected_display_ranges(cx),
5760 &[
5761 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5762 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5763 ]
5764 );
5765 });
5766
5767 view.update(cx, |view, cx| {
5768 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5769 assert_eq!(view.display_text(cx), "\n");
5770 assert_eq!(
5771 view.selected_display_ranges(cx),
5772 &[
5773 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5774 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5775 ]
5776 );
5777 });
5778 }
5779
5780 #[gpui::test]
5781 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5782 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5783 let settings = EditorSettings::test(&cx);
5784 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5785 view.update(cx, |view, cx| {
5786 view.select_display_ranges(
5787 &[
5788 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5789 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5790 ],
5791 cx,
5792 );
5793 });
5794
5795 view.update(cx, |view, cx| {
5796 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5797 assert_eq!(
5798 view.selected_display_ranges(cx),
5799 &[
5800 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5801 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5802 ]
5803 );
5804 });
5805
5806 view.update(cx, |view, cx| {
5807 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5808 assert_eq!(
5809 view.selected_display_ranges(cx),
5810 &[
5811 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5812 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5813 ]
5814 );
5815 });
5816
5817 view.update(cx, |view, cx| {
5818 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5819 assert_eq!(
5820 view.selected_display_ranges(cx),
5821 &[
5822 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5823 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5824 ]
5825 );
5826 });
5827
5828 view.update(cx, |view, cx| {
5829 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5830 assert_eq!(
5831 view.selected_display_ranges(cx),
5832 &[
5833 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5834 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5835 ]
5836 );
5837 });
5838
5839 view.update(cx, |view, cx| {
5840 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5841 assert_eq!(
5842 view.selected_display_ranges(cx),
5843 &[
5844 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5845 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
5846 ]
5847 );
5848 });
5849
5850 view.update(cx, |view, cx| {
5851 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5852 assert_eq!(
5853 view.selected_display_ranges(cx),
5854 &[
5855 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5856 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
5857 ]
5858 );
5859 });
5860
5861 view.update(cx, |view, cx| {
5862 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5863 assert_eq!(
5864 view.selected_display_ranges(cx),
5865 &[
5866 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5867 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5868 ]
5869 );
5870 });
5871
5872 view.update(cx, |view, cx| {
5873 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5874 assert_eq!(
5875 view.selected_display_ranges(cx),
5876 &[
5877 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5878 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5879 ]
5880 );
5881 });
5882
5883 view.update(cx, |view, cx| {
5884 view.move_right(&MoveRight, cx);
5885 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5886 assert_eq!(
5887 view.selected_display_ranges(cx),
5888 &[
5889 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5890 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5891 ]
5892 );
5893 });
5894
5895 view.update(cx, |view, cx| {
5896 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
5897 assert_eq!(
5898 view.selected_display_ranges(cx),
5899 &[
5900 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
5901 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
5902 ]
5903 );
5904 });
5905
5906 view.update(cx, |view, cx| {
5907 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
5908 assert_eq!(
5909 view.selected_display_ranges(cx),
5910 &[
5911 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
5912 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
5913 ]
5914 );
5915 });
5916 }
5917
5918 #[gpui::test]
5919 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
5920 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
5921 let settings = EditorSettings::test(&cx);
5922 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5923
5924 view.update(cx, |view, cx| {
5925 view.set_wrap_width(Some(140.), cx);
5926 assert_eq!(
5927 view.display_text(cx),
5928 "use one::{\n two::three::\n four::five\n};"
5929 );
5930
5931 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
5932
5933 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5934 assert_eq!(
5935 view.selected_display_ranges(cx),
5936 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
5937 );
5938
5939 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5940 assert_eq!(
5941 view.selected_display_ranges(cx),
5942 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5943 );
5944
5945 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5946 assert_eq!(
5947 view.selected_display_ranges(cx),
5948 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5949 );
5950
5951 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
5952 assert_eq!(
5953 view.selected_display_ranges(cx),
5954 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
5955 );
5956
5957 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5958 assert_eq!(
5959 view.selected_display_ranges(cx),
5960 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
5961 );
5962
5963 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5964 assert_eq!(
5965 view.selected_display_ranges(cx),
5966 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
5967 );
5968 });
5969 }
5970
5971 #[gpui::test]
5972 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
5973 let buffer = MultiBuffer::build_simple("one two three four", cx);
5974 let settings = EditorSettings::test(&cx);
5975 let (_, view) = cx.add_window(Default::default(), |cx| {
5976 build_editor(buffer.clone(), settings, cx)
5977 });
5978
5979 view.update(cx, |view, cx| {
5980 view.select_display_ranges(
5981 &[
5982 // an empty selection - the preceding word fragment is deleted
5983 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5984 // characters selected - they are deleted
5985 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
5986 ],
5987 cx,
5988 );
5989 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
5990 });
5991
5992 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
5993
5994 view.update(cx, |view, cx| {
5995 view.select_display_ranges(
5996 &[
5997 // an empty selection - the following word fragment is deleted
5998 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5999 // characters selected - they are deleted
6000 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6001 ],
6002 cx,
6003 );
6004 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6005 });
6006
6007 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6008 }
6009
6010 #[gpui::test]
6011 fn test_newline(cx: &mut gpui::MutableAppContext) {
6012 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6013 let settings = EditorSettings::test(&cx);
6014 let (_, view) = cx.add_window(Default::default(), |cx| {
6015 build_editor(buffer.clone(), settings, cx)
6016 });
6017
6018 view.update(cx, |view, cx| {
6019 view.select_display_ranges(
6020 &[
6021 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6022 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6023 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6024 ],
6025 cx,
6026 );
6027
6028 view.newline(&Newline, cx);
6029 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6030 });
6031 }
6032
6033 #[gpui::test]
6034 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6035 let buffer = MultiBuffer::build_simple(
6036 "
6037 a
6038 b(
6039 X
6040 )
6041 c(
6042 X
6043 )
6044 "
6045 .unindent()
6046 .as_str(),
6047 cx,
6048 );
6049
6050 let settings = EditorSettings::test(&cx);
6051 let (_, editor) = cx.add_window(Default::default(), |cx| {
6052 let mut editor = build_editor(buffer.clone(), settings, cx);
6053 editor.select_ranges(
6054 [
6055 Point::new(2, 4)..Point::new(2, 5),
6056 Point::new(5, 4)..Point::new(5, 5),
6057 ],
6058 None,
6059 cx,
6060 );
6061 editor
6062 });
6063
6064 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6065 buffer.update(cx, |buffer, cx| {
6066 buffer.edit(
6067 [
6068 Point::new(1, 2)..Point::new(3, 0),
6069 Point::new(4, 2)..Point::new(6, 0),
6070 ],
6071 "",
6072 cx,
6073 );
6074 assert_eq!(
6075 buffer.read(cx).text(),
6076 "
6077 a
6078 b()
6079 c()
6080 "
6081 .unindent()
6082 );
6083 });
6084
6085 editor.update(cx, |editor, cx| {
6086 assert_eq!(
6087 editor.selected_ranges(cx),
6088 &[
6089 Point::new(1, 2)..Point::new(1, 2),
6090 Point::new(2, 2)..Point::new(2, 2),
6091 ],
6092 );
6093
6094 editor.newline(&Newline, cx);
6095 assert_eq!(
6096 editor.text(cx),
6097 "
6098 a
6099 b(
6100 )
6101 c(
6102 )
6103 "
6104 .unindent()
6105 );
6106
6107 // The selections are moved after the inserted newlines
6108 assert_eq!(
6109 editor.selected_ranges(cx),
6110 &[
6111 Point::new(2, 0)..Point::new(2, 0),
6112 Point::new(4, 0)..Point::new(4, 0),
6113 ],
6114 );
6115 });
6116 }
6117
6118 #[gpui::test]
6119 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6120 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6121
6122 let settings = EditorSettings::test(&cx);
6123 let (_, editor) = cx.add_window(Default::default(), |cx| {
6124 let mut editor = build_editor(buffer.clone(), settings, cx);
6125 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6126 editor
6127 });
6128
6129 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6130 buffer.update(cx, |buffer, cx| {
6131 buffer.edit([2..5, 10..13, 18..21], "", cx);
6132 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6133 });
6134
6135 editor.update(cx, |editor, cx| {
6136 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6137
6138 editor.insert("Z", cx);
6139 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6140
6141 // The selections are moved after the inserted characters
6142 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6143 });
6144 }
6145
6146 #[gpui::test]
6147 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6148 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6149 let settings = EditorSettings::test(&cx);
6150 let (_, view) = cx.add_window(Default::default(), |cx| {
6151 build_editor(buffer.clone(), settings, cx)
6152 });
6153
6154 view.update(cx, |view, cx| {
6155 // two selections on the same line
6156 view.select_display_ranges(
6157 &[
6158 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6159 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6160 ],
6161 cx,
6162 );
6163
6164 // indent from mid-tabstop to full tabstop
6165 view.tab(&Tab, cx);
6166 assert_eq!(view.text(cx), " one two\nthree\n four");
6167 assert_eq!(
6168 view.selected_display_ranges(cx),
6169 &[
6170 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6171 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6172 ]
6173 );
6174
6175 // outdent from 1 tabstop to 0 tabstops
6176 view.outdent(&Outdent, cx);
6177 assert_eq!(view.text(cx), "one two\nthree\n four");
6178 assert_eq!(
6179 view.selected_display_ranges(cx),
6180 &[
6181 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6182 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6183 ]
6184 );
6185
6186 // select across line ending
6187 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6188
6189 // indent and outdent affect only the preceding line
6190 view.tab(&Tab, cx);
6191 assert_eq!(view.text(cx), "one two\n three\n four");
6192 assert_eq!(
6193 view.selected_display_ranges(cx),
6194 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6195 );
6196 view.outdent(&Outdent, cx);
6197 assert_eq!(view.text(cx), "one two\nthree\n four");
6198 assert_eq!(
6199 view.selected_display_ranges(cx),
6200 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6201 );
6202
6203 // Ensure that indenting/outdenting works when the cursor is at column 0.
6204 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6205 view.tab(&Tab, cx);
6206 assert_eq!(view.text(cx), "one two\n three\n four");
6207 assert_eq!(
6208 view.selected_display_ranges(cx),
6209 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6210 );
6211
6212 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6213 view.outdent(&Outdent, cx);
6214 assert_eq!(view.text(cx), "one two\nthree\n four");
6215 assert_eq!(
6216 view.selected_display_ranges(cx),
6217 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6218 );
6219 });
6220 }
6221
6222 #[gpui::test]
6223 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6224 let buffer =
6225 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6226 let settings = EditorSettings::test(&cx);
6227 let (_, view) = cx.add_window(Default::default(), |cx| {
6228 build_editor(buffer.clone(), settings, cx)
6229 });
6230
6231 view.update(cx, |view, cx| {
6232 view.select_display_ranges(
6233 &[
6234 // an empty selection - the preceding character is deleted
6235 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6236 // one character selected - it is deleted
6237 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6238 // a line suffix selected - it is deleted
6239 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6240 ],
6241 cx,
6242 );
6243 view.backspace(&Backspace, cx);
6244 });
6245
6246 assert_eq!(
6247 buffer.read(cx).read(cx).text(),
6248 "oe two three\nfou five six\nseven ten\n"
6249 );
6250 }
6251
6252 #[gpui::test]
6253 fn test_delete(cx: &mut gpui::MutableAppContext) {
6254 let buffer =
6255 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6256 let settings = EditorSettings::test(&cx);
6257 let (_, view) = cx.add_window(Default::default(), |cx| {
6258 build_editor(buffer.clone(), settings, cx)
6259 });
6260
6261 view.update(cx, |view, cx| {
6262 view.select_display_ranges(
6263 &[
6264 // an empty selection - the following character is deleted
6265 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6266 // one character selected - it is deleted
6267 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6268 // a line suffix selected - it is deleted
6269 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6270 ],
6271 cx,
6272 );
6273 view.delete(&Delete, cx);
6274 });
6275
6276 assert_eq!(
6277 buffer.read(cx).read(cx).text(),
6278 "on two three\nfou five six\nseven ten\n"
6279 );
6280 }
6281
6282 #[gpui::test]
6283 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6284 let settings = EditorSettings::test(&cx);
6285 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6286 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6287 view.update(cx, |view, cx| {
6288 view.select_display_ranges(
6289 &[
6290 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6291 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6292 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6293 ],
6294 cx,
6295 );
6296 view.delete_line(&DeleteLine, cx);
6297 assert_eq!(view.display_text(cx), "ghi");
6298 assert_eq!(
6299 view.selected_display_ranges(cx),
6300 vec![
6301 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6302 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6303 ]
6304 );
6305 });
6306
6307 let settings = EditorSettings::test(&cx);
6308 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6309 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6310 view.update(cx, |view, cx| {
6311 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6312 view.delete_line(&DeleteLine, cx);
6313 assert_eq!(view.display_text(cx), "ghi\n");
6314 assert_eq!(
6315 view.selected_display_ranges(cx),
6316 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6317 );
6318 });
6319 }
6320
6321 #[gpui::test]
6322 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6323 let settings = EditorSettings::test(&cx);
6324 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6325 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6326 view.update(cx, |view, cx| {
6327 view.select_display_ranges(
6328 &[
6329 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6330 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6331 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6332 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6333 ],
6334 cx,
6335 );
6336 view.duplicate_line(&DuplicateLine, cx);
6337 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6338 assert_eq!(
6339 view.selected_display_ranges(cx),
6340 vec![
6341 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6342 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6343 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6344 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6345 ]
6346 );
6347 });
6348
6349 let settings = EditorSettings::test(&cx);
6350 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6351 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6352 view.update(cx, |view, cx| {
6353 view.select_display_ranges(
6354 &[
6355 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6356 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6357 ],
6358 cx,
6359 );
6360 view.duplicate_line(&DuplicateLine, cx);
6361 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6362 assert_eq!(
6363 view.selected_display_ranges(cx),
6364 vec![
6365 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6366 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6367 ]
6368 );
6369 });
6370 }
6371
6372 #[gpui::test]
6373 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6374 let settings = EditorSettings::test(&cx);
6375 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6376 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6377 view.update(cx, |view, cx| {
6378 view.fold_ranges(
6379 vec![
6380 Point::new(0, 2)..Point::new(1, 2),
6381 Point::new(2, 3)..Point::new(4, 1),
6382 Point::new(7, 0)..Point::new(8, 4),
6383 ],
6384 cx,
6385 );
6386 view.select_display_ranges(
6387 &[
6388 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6389 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6390 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6391 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6392 ],
6393 cx,
6394 );
6395 assert_eq!(
6396 view.display_text(cx),
6397 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6398 );
6399
6400 view.move_line_up(&MoveLineUp, cx);
6401 assert_eq!(
6402 view.display_text(cx),
6403 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6404 );
6405 assert_eq!(
6406 view.selected_display_ranges(cx),
6407 vec![
6408 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6409 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6410 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6411 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6412 ]
6413 );
6414 });
6415
6416 view.update(cx, |view, cx| {
6417 view.move_line_down(&MoveLineDown, cx);
6418 assert_eq!(
6419 view.display_text(cx),
6420 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6421 );
6422 assert_eq!(
6423 view.selected_display_ranges(cx),
6424 vec![
6425 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6426 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6427 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6428 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6429 ]
6430 );
6431 });
6432
6433 view.update(cx, |view, cx| {
6434 view.move_line_down(&MoveLineDown, cx);
6435 assert_eq!(
6436 view.display_text(cx),
6437 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6438 );
6439 assert_eq!(
6440 view.selected_display_ranges(cx),
6441 vec![
6442 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6443 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6444 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6445 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6446 ]
6447 );
6448 });
6449
6450 view.update(cx, |view, cx| {
6451 view.move_line_up(&MoveLineUp, cx);
6452 assert_eq!(
6453 view.display_text(cx),
6454 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6455 );
6456 assert_eq!(
6457 view.selected_display_ranges(cx),
6458 vec![
6459 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6460 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6461 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6462 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6463 ]
6464 );
6465 });
6466 }
6467
6468 #[gpui::test]
6469 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6470 let settings = EditorSettings::test(&cx);
6471 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6472 let snapshot = buffer.read(cx).snapshot(cx);
6473 let (_, editor) =
6474 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6475 editor.update(cx, |editor, cx| {
6476 editor.insert_blocks(
6477 [BlockProperties {
6478 position: snapshot.anchor_after(Point::new(2, 0)),
6479 disposition: BlockDisposition::Below,
6480 height: 1,
6481 render: Arc::new(|_| Empty::new().boxed()),
6482 }],
6483 cx,
6484 );
6485 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6486 editor.move_line_down(&MoveLineDown, cx);
6487 });
6488 }
6489
6490 #[gpui::test]
6491 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6492 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6493 let settings = EditorSettings::test(&cx);
6494 let view = cx
6495 .add_window(Default::default(), |cx| {
6496 build_editor(buffer.clone(), settings, cx)
6497 })
6498 .1;
6499
6500 // Cut with three selections. Clipboard text is divided into three slices.
6501 view.update(cx, |view, cx| {
6502 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6503 view.cut(&Cut, cx);
6504 assert_eq!(view.display_text(cx), "two four six ");
6505 });
6506
6507 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6508 view.update(cx, |view, cx| {
6509 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6510 view.paste(&Paste, cx);
6511 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6512 assert_eq!(
6513 view.selected_display_ranges(cx),
6514 &[
6515 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6516 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6517 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6518 ]
6519 );
6520 });
6521
6522 // Paste again but with only two cursors. Since the number of cursors doesn't
6523 // match the number of slices in the clipboard, the entire clipboard text
6524 // is pasted at each cursor.
6525 view.update(cx, |view, cx| {
6526 view.select_ranges(vec![0..0, 31..31], None, cx);
6527 view.handle_input(&Input("( ".into()), cx);
6528 view.paste(&Paste, cx);
6529 view.handle_input(&Input(") ".into()), cx);
6530 assert_eq!(
6531 view.display_text(cx),
6532 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6533 );
6534 });
6535
6536 view.update(cx, |view, cx| {
6537 view.select_ranges(vec![0..0], None, cx);
6538 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6539 assert_eq!(
6540 view.display_text(cx),
6541 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6542 );
6543 });
6544
6545 // Cut with three selections, one of which is full-line.
6546 view.update(cx, |view, cx| {
6547 view.select_display_ranges(
6548 &[
6549 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6550 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6551 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6552 ],
6553 cx,
6554 );
6555 view.cut(&Cut, cx);
6556 assert_eq!(
6557 view.display_text(cx),
6558 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6559 );
6560 });
6561
6562 // Paste with three selections, noticing how the copied selection that was full-line
6563 // gets inserted before the second cursor.
6564 view.update(cx, |view, cx| {
6565 view.select_display_ranges(
6566 &[
6567 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6568 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6569 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6570 ],
6571 cx,
6572 );
6573 view.paste(&Paste, cx);
6574 assert_eq!(
6575 view.display_text(cx),
6576 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6577 );
6578 assert_eq!(
6579 view.selected_display_ranges(cx),
6580 &[
6581 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6582 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6583 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6584 ]
6585 );
6586 });
6587
6588 // Copy with a single cursor only, which writes the whole line into the clipboard.
6589 view.update(cx, |view, cx| {
6590 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6591 view.copy(&Copy, cx);
6592 });
6593
6594 // Paste with three selections, noticing how the copied full-line selection is inserted
6595 // before the empty selections but replaces the selection that is non-empty.
6596 view.update(cx, |view, cx| {
6597 view.select_display_ranges(
6598 &[
6599 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6600 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6601 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6602 ],
6603 cx,
6604 );
6605 view.paste(&Paste, cx);
6606 assert_eq!(
6607 view.display_text(cx),
6608 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6609 );
6610 assert_eq!(
6611 view.selected_display_ranges(cx),
6612 &[
6613 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6614 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6615 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6616 ]
6617 );
6618 });
6619 }
6620
6621 #[gpui::test]
6622 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6623 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6624 let settings = EditorSettings::test(&cx);
6625 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6626 view.update(cx, |view, cx| {
6627 view.select_all(&SelectAll, cx);
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6631 );
6632 });
6633 }
6634
6635 #[gpui::test]
6636 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6637 let settings = EditorSettings::test(&cx);
6638 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6639 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6640 view.update(cx, |view, cx| {
6641 view.select_display_ranges(
6642 &[
6643 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6644 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6645 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6646 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6647 ],
6648 cx,
6649 );
6650 view.select_line(&SelectLine, cx);
6651 assert_eq!(
6652 view.selected_display_ranges(cx),
6653 vec![
6654 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6655 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6656 ]
6657 );
6658 });
6659
6660 view.update(cx, |view, cx| {
6661 view.select_line(&SelectLine, cx);
6662 assert_eq!(
6663 view.selected_display_ranges(cx),
6664 vec![
6665 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6666 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6667 ]
6668 );
6669 });
6670
6671 view.update(cx, |view, cx| {
6672 view.select_line(&SelectLine, cx);
6673 assert_eq!(
6674 view.selected_display_ranges(cx),
6675 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6676 );
6677 });
6678 }
6679
6680 #[gpui::test]
6681 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6682 let settings = EditorSettings::test(&cx);
6683 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6684 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6685 view.update(cx, |view, cx| {
6686 view.fold_ranges(
6687 vec![
6688 Point::new(0, 2)..Point::new(1, 2),
6689 Point::new(2, 3)..Point::new(4, 1),
6690 Point::new(7, 0)..Point::new(8, 4),
6691 ],
6692 cx,
6693 );
6694 view.select_display_ranges(
6695 &[
6696 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6697 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6698 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6699 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6700 ],
6701 cx,
6702 );
6703 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6704 });
6705
6706 view.update(cx, |view, cx| {
6707 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6708 assert_eq!(
6709 view.display_text(cx),
6710 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6711 );
6712 assert_eq!(
6713 view.selected_display_ranges(cx),
6714 [
6715 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6716 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6717 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6718 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6719 ]
6720 );
6721 });
6722
6723 view.update(cx, |view, cx| {
6724 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6725 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6726 assert_eq!(
6727 view.display_text(cx),
6728 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6729 );
6730 assert_eq!(
6731 view.selected_display_ranges(cx),
6732 [
6733 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6734 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6735 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6736 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6737 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6738 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6739 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6740 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6741 ]
6742 );
6743 });
6744 }
6745
6746 #[gpui::test]
6747 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6748 let settings = EditorSettings::test(&cx);
6749 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6750 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6751
6752 view.update(cx, |view, cx| {
6753 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6754 });
6755 view.update(cx, |view, cx| {
6756 view.add_selection_above(&AddSelectionAbove, cx);
6757 assert_eq!(
6758 view.selected_display_ranges(cx),
6759 vec![
6760 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6761 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6762 ]
6763 );
6764 });
6765
6766 view.update(cx, |view, cx| {
6767 view.add_selection_above(&AddSelectionAbove, cx);
6768 assert_eq!(
6769 view.selected_display_ranges(cx),
6770 vec![
6771 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6772 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6773 ]
6774 );
6775 });
6776
6777 view.update(cx, |view, cx| {
6778 view.add_selection_below(&AddSelectionBelow, cx);
6779 assert_eq!(
6780 view.selected_display_ranges(cx),
6781 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6782 );
6783 });
6784
6785 view.update(cx, |view, cx| {
6786 view.add_selection_below(&AddSelectionBelow, cx);
6787 assert_eq!(
6788 view.selected_display_ranges(cx),
6789 vec![
6790 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6791 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6792 ]
6793 );
6794 });
6795
6796 view.update(cx, |view, cx| {
6797 view.add_selection_below(&AddSelectionBelow, cx);
6798 assert_eq!(
6799 view.selected_display_ranges(cx),
6800 vec![
6801 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6802 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6803 ]
6804 );
6805 });
6806
6807 view.update(cx, |view, cx| {
6808 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6809 });
6810 view.update(cx, |view, cx| {
6811 view.add_selection_below(&AddSelectionBelow, cx);
6812 assert_eq!(
6813 view.selected_display_ranges(cx),
6814 vec![
6815 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6816 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6817 ]
6818 );
6819 });
6820
6821 view.update(cx, |view, cx| {
6822 view.add_selection_below(&AddSelectionBelow, cx);
6823 assert_eq!(
6824 view.selected_display_ranges(cx),
6825 vec![
6826 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6827 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6828 ]
6829 );
6830 });
6831
6832 view.update(cx, |view, cx| {
6833 view.add_selection_above(&AddSelectionAbove, cx);
6834 assert_eq!(
6835 view.selected_display_ranges(cx),
6836 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6837 );
6838 });
6839
6840 view.update(cx, |view, cx| {
6841 view.add_selection_above(&AddSelectionAbove, cx);
6842 assert_eq!(
6843 view.selected_display_ranges(cx),
6844 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6845 );
6846 });
6847
6848 view.update(cx, |view, cx| {
6849 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
6850 view.add_selection_below(&AddSelectionBelow, cx);
6851 assert_eq!(
6852 view.selected_display_ranges(cx),
6853 vec![
6854 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6855 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6856 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6857 ]
6858 );
6859 });
6860
6861 view.update(cx, |view, cx| {
6862 view.add_selection_below(&AddSelectionBelow, cx);
6863 assert_eq!(
6864 view.selected_display_ranges(cx),
6865 vec![
6866 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6867 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6868 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6869 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
6870 ]
6871 );
6872 });
6873
6874 view.update(cx, |view, cx| {
6875 view.add_selection_above(&AddSelectionAbove, cx);
6876 assert_eq!(
6877 view.selected_display_ranges(cx),
6878 vec![
6879 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6880 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
6881 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
6882 ]
6883 );
6884 });
6885
6886 view.update(cx, |view, cx| {
6887 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
6888 });
6889 view.update(cx, |view, cx| {
6890 view.add_selection_above(&AddSelectionAbove, cx);
6891 assert_eq!(
6892 view.selected_display_ranges(cx),
6893 vec![
6894 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
6895 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6896 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6897 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6898 ]
6899 );
6900 });
6901
6902 view.update(cx, |view, cx| {
6903 view.add_selection_below(&AddSelectionBelow, cx);
6904 assert_eq!(
6905 view.selected_display_ranges(cx),
6906 vec![
6907 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
6908 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
6909 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
6910 ]
6911 );
6912 });
6913 }
6914
6915 #[gpui::test]
6916 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
6917 let settings = cx.read(EditorSettings::test);
6918 let language = Arc::new(Language::new(
6919 LanguageConfig::default(),
6920 Some(tree_sitter_rust::language()),
6921 ));
6922
6923 let text = r#"
6924 use mod1::mod2::{mod3, mod4};
6925
6926 fn fn_1(param1: bool, param2: &str) {
6927 let var1 = "text";
6928 }
6929 "#
6930 .unindent();
6931
6932 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
6933 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6934 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6935 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6936 .await;
6937
6938 view.update(&mut cx, |view, cx| {
6939 view.select_display_ranges(
6940 &[
6941 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
6942 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
6943 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
6944 ],
6945 cx,
6946 );
6947 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6948 });
6949 assert_eq!(
6950 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6951 &[
6952 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
6953 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
6954 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
6955 ]
6956 );
6957
6958 view.update(&mut cx, |view, cx| {
6959 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6960 });
6961 assert_eq!(
6962 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6963 &[
6964 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6965 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6966 ]
6967 );
6968
6969 view.update(&mut cx, |view, cx| {
6970 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6971 });
6972 assert_eq!(
6973 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6974 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6975 );
6976
6977 // Trying to expand the selected syntax node one more time has no effect.
6978 view.update(&mut cx, |view, cx| {
6979 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
6980 });
6981 assert_eq!(
6982 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6983 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
6984 );
6985
6986 view.update(&mut cx, |view, cx| {
6987 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6988 });
6989 assert_eq!(
6990 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
6991 &[
6992 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
6993 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
6994 ]
6995 );
6996
6997 view.update(&mut cx, |view, cx| {
6998 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
6999 });
7000 assert_eq!(
7001 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7002 &[
7003 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7004 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7005 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7006 ]
7007 );
7008
7009 view.update(&mut cx, |view, cx| {
7010 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7011 });
7012 assert_eq!(
7013 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7014 &[
7015 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7016 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7017 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7018 ]
7019 );
7020
7021 // Trying to shrink the selected syntax node one more time has no effect.
7022 view.update(&mut cx, |view, cx| {
7023 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7024 });
7025 assert_eq!(
7026 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7027 &[
7028 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7029 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7030 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7031 ]
7032 );
7033
7034 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7035 // a fold.
7036 view.update(&mut cx, |view, cx| {
7037 view.fold_ranges(
7038 vec![
7039 Point::new(0, 21)..Point::new(0, 24),
7040 Point::new(3, 20)..Point::new(3, 22),
7041 ],
7042 cx,
7043 );
7044 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7045 });
7046 assert_eq!(
7047 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7048 &[
7049 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7050 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7051 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7052 ]
7053 );
7054 }
7055
7056 #[gpui::test]
7057 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7058 let settings = cx.read(EditorSettings::test);
7059 let language = Arc::new(
7060 Language::new(
7061 LanguageConfig {
7062 brackets: vec![
7063 BracketPair {
7064 start: "{".to_string(),
7065 end: "}".to_string(),
7066 close: false,
7067 newline: true,
7068 },
7069 BracketPair {
7070 start: "(".to_string(),
7071 end: ")".to_string(),
7072 close: false,
7073 newline: true,
7074 },
7075 ],
7076 ..Default::default()
7077 },
7078 Some(tree_sitter_rust::language()),
7079 )
7080 .with_indents_query(
7081 r#"
7082 (_ "(" ")" @end) @indent
7083 (_ "{" "}" @end) @indent
7084 "#,
7085 )
7086 .unwrap(),
7087 );
7088
7089 let text = "fn a() {}";
7090
7091 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7092 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7093 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7094 editor
7095 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7096 .await;
7097
7098 editor.update(&mut cx, |editor, cx| {
7099 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7100 editor.newline(&Newline, cx);
7101 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7102 assert_eq!(
7103 editor.selected_ranges(cx),
7104 &[
7105 Point::new(1, 4)..Point::new(1, 4),
7106 Point::new(3, 4)..Point::new(3, 4),
7107 Point::new(5, 0)..Point::new(5, 0)
7108 ]
7109 );
7110 });
7111 }
7112
7113 #[gpui::test]
7114 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7115 let settings = cx.read(EditorSettings::test);
7116 let language = Arc::new(Language::new(
7117 LanguageConfig {
7118 brackets: vec![
7119 BracketPair {
7120 start: "{".to_string(),
7121 end: "}".to_string(),
7122 close: true,
7123 newline: true,
7124 },
7125 BracketPair {
7126 start: "/*".to_string(),
7127 end: " */".to_string(),
7128 close: true,
7129 newline: true,
7130 },
7131 ],
7132 ..Default::default()
7133 },
7134 Some(tree_sitter_rust::language()),
7135 ));
7136
7137 let text = r#"
7138 a
7139
7140 /
7141
7142 "#
7143 .unindent();
7144
7145 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7146 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7147 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7148 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7149 .await;
7150
7151 view.update(&mut cx, |view, cx| {
7152 view.select_display_ranges(
7153 &[
7154 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7155 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7156 ],
7157 cx,
7158 );
7159 view.handle_input(&Input("{".to_string()), cx);
7160 view.handle_input(&Input("{".to_string()), cx);
7161 view.handle_input(&Input("{".to_string()), cx);
7162 assert_eq!(
7163 view.text(cx),
7164 "
7165 {{{}}}
7166 {{{}}}
7167 /
7168
7169 "
7170 .unindent()
7171 );
7172
7173 view.move_right(&MoveRight, cx);
7174 view.handle_input(&Input("}".to_string()), cx);
7175 view.handle_input(&Input("}".to_string()), cx);
7176 view.handle_input(&Input("}".to_string()), cx);
7177 assert_eq!(
7178 view.text(cx),
7179 "
7180 {{{}}}}
7181 {{{}}}}
7182 /
7183
7184 "
7185 .unindent()
7186 );
7187
7188 view.undo(&Undo, cx);
7189 view.handle_input(&Input("/".to_string()), cx);
7190 view.handle_input(&Input("*".to_string()), cx);
7191 assert_eq!(
7192 view.text(cx),
7193 "
7194 /* */
7195 /* */
7196 /
7197
7198 "
7199 .unindent()
7200 );
7201
7202 view.undo(&Undo, cx);
7203 view.select_display_ranges(
7204 &[
7205 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7206 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7207 ],
7208 cx,
7209 );
7210 view.handle_input(&Input("*".to_string()), cx);
7211 assert_eq!(
7212 view.text(cx),
7213 "
7214 a
7215
7216 /*
7217 *
7218 "
7219 .unindent()
7220 );
7221 });
7222 }
7223
7224 #[gpui::test]
7225 async fn test_snippets(mut cx: gpui::TestAppContext) {
7226 let settings = cx.read(EditorSettings::test);
7227
7228 let text = "
7229 a. b
7230 a. b
7231 a. b
7232 "
7233 .unindent();
7234 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7235 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7236
7237 editor.update(&mut cx, |editor, cx| {
7238 let buffer = &editor.snapshot(cx).buffer_snapshot;
7239 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7240 let insertion_ranges = [
7241 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7242 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7243 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7244 ];
7245
7246 editor
7247 .insert_snippet(&insertion_ranges, snippet, cx)
7248 .unwrap();
7249 assert_eq!(
7250 editor.text(cx),
7251 "
7252 a.f(one, two, three) b
7253 a.f(one, two, three) b
7254 a.f(one, two, three) b
7255 "
7256 .unindent()
7257 );
7258 assert_eq!(
7259 editor.selected_ranges::<Point>(cx),
7260 &[
7261 Point::new(0, 4)..Point::new(0, 7),
7262 Point::new(0, 14)..Point::new(0, 19),
7263 Point::new(1, 4)..Point::new(1, 7),
7264 Point::new(1, 14)..Point::new(1, 19),
7265 Point::new(2, 4)..Point::new(2, 7),
7266 Point::new(2, 14)..Point::new(2, 19),
7267 ]
7268 );
7269
7270 // Can't move earlier than the first tab stop
7271 editor.move_to_prev_snippet_tabstop(cx);
7272 assert_eq!(
7273 editor.selected_ranges::<Point>(cx),
7274 &[
7275 Point::new(0, 4)..Point::new(0, 7),
7276 Point::new(0, 14)..Point::new(0, 19),
7277 Point::new(1, 4)..Point::new(1, 7),
7278 Point::new(1, 14)..Point::new(1, 19),
7279 Point::new(2, 4)..Point::new(2, 7),
7280 Point::new(2, 14)..Point::new(2, 19),
7281 ]
7282 );
7283
7284 assert!(editor.move_to_next_snippet_tabstop(cx));
7285 assert_eq!(
7286 editor.selected_ranges::<Point>(cx),
7287 &[
7288 Point::new(0, 9)..Point::new(0, 12),
7289 Point::new(1, 9)..Point::new(1, 12),
7290 Point::new(2, 9)..Point::new(2, 12)
7291 ]
7292 );
7293
7294 editor.move_to_prev_snippet_tabstop(cx);
7295 assert_eq!(
7296 editor.selected_ranges::<Point>(cx),
7297 &[
7298 Point::new(0, 4)..Point::new(0, 7),
7299 Point::new(0, 14)..Point::new(0, 19),
7300 Point::new(1, 4)..Point::new(1, 7),
7301 Point::new(1, 14)..Point::new(1, 19),
7302 Point::new(2, 4)..Point::new(2, 7),
7303 Point::new(2, 14)..Point::new(2, 19),
7304 ]
7305 );
7306
7307 assert!(editor.move_to_next_snippet_tabstop(cx));
7308 assert!(editor.move_to_next_snippet_tabstop(cx));
7309 assert_eq!(
7310 editor.selected_ranges::<Point>(cx),
7311 &[
7312 Point::new(0, 20)..Point::new(0, 20),
7313 Point::new(1, 20)..Point::new(1, 20),
7314 Point::new(2, 20)..Point::new(2, 20)
7315 ]
7316 );
7317
7318 // As soon as the last tab stop is reached, snippet state is gone
7319 editor.move_to_prev_snippet_tabstop(cx);
7320 assert_eq!(
7321 editor.selected_ranges::<Point>(cx),
7322 &[
7323 Point::new(0, 20)..Point::new(0, 20),
7324 Point::new(1, 20)..Point::new(1, 20),
7325 Point::new(2, 20)..Point::new(2, 20)
7326 ]
7327 );
7328 });
7329 }
7330
7331 #[gpui::test]
7332 async fn test_completion(mut cx: gpui::TestAppContext) {
7333 let settings = cx.read(EditorSettings::test);
7334 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7335 lsp::ServerCapabilities {
7336 completion_provider: Some(lsp::CompletionOptions {
7337 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7338 ..Default::default()
7339 }),
7340 ..Default::default()
7341 },
7342 cx.background(),
7343 )
7344 .await;
7345
7346 let text = "
7347 one
7348 two
7349 three
7350 "
7351 .unindent();
7352 let buffer = cx.add_model(|cx| {
7353 Buffer::from_file(
7354 0,
7355 text,
7356 Box::new(FakeFile {
7357 path: Arc::from(Path::new("/the/file")),
7358 }),
7359 cx,
7360 )
7361 .with_language_server(language_server, cx)
7362 });
7363 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7364 buffer.next_notification(&cx).await;
7365
7366 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7367
7368 editor.update(&mut cx, |editor, cx| {
7369 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7370 editor.handle_input(&Input(".".to_string()), cx);
7371 });
7372
7373 handle_completion_request(
7374 &mut fake,
7375 "/the/file",
7376 Point::new(0, 4),
7377 &[
7378 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7379 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7380 ],
7381 )
7382 .await;
7383 editor.next_notification(&cx).await;
7384
7385 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7386 editor.move_down(&MoveDown, cx);
7387 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7388 assert_eq!(
7389 editor.text(cx),
7390 "
7391 one.second_completion
7392 two
7393 three
7394 "
7395 .unindent()
7396 );
7397 apply_additional_edits
7398 });
7399
7400 handle_resolve_completion_request(
7401 &mut fake,
7402 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7403 )
7404 .await;
7405 apply_additional_edits.await.unwrap();
7406 assert_eq!(
7407 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7408 "
7409 one.second_completion
7410 two
7411 three
7412 additional edit
7413 "
7414 .unindent()
7415 );
7416
7417 editor.update(&mut cx, |editor, cx| {
7418 editor.select_ranges(
7419 [
7420 Point::new(1, 3)..Point::new(1, 3),
7421 Point::new(2, 5)..Point::new(2, 5),
7422 ],
7423 None,
7424 cx,
7425 );
7426
7427 editor.handle_input(&Input(" ".to_string()), cx);
7428 assert!(editor.context_menu.is_none());
7429 editor.handle_input(&Input("s".to_string()), cx);
7430 assert!(editor.context_menu.is_none());
7431 });
7432
7433 handle_completion_request(
7434 &mut fake,
7435 "/the/file",
7436 Point::new(2, 7),
7437 &[
7438 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7439 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7440 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7441 ],
7442 )
7443 .await;
7444 editor
7445 .condition(&cx, |editor, _| editor.context_menu.is_some())
7446 .await;
7447
7448 editor.update(&mut cx, |editor, cx| {
7449 editor.handle_input(&Input("i".to_string()), cx);
7450 });
7451
7452 handle_completion_request(
7453 &mut fake,
7454 "/the/file",
7455 Point::new(2, 8),
7456 &[
7457 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7458 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7459 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7460 ],
7461 )
7462 .await;
7463 editor.next_notification(&cx).await;
7464
7465 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7466 let apply_additional_edits = editor.confirm_completion(None, cx).unwrap();
7467 assert_eq!(
7468 editor.text(cx),
7469 "
7470 one.second_completion
7471 two sixth_completion
7472 three sixth_completion
7473 additional edit
7474 "
7475 .unindent()
7476 );
7477 apply_additional_edits
7478 });
7479 handle_resolve_completion_request(&mut fake, None).await;
7480 apply_additional_edits.await.unwrap();
7481
7482 async fn handle_completion_request(
7483 fake: &mut FakeLanguageServer,
7484 path: &str,
7485 position: Point,
7486 completions: &[(Range<Point>, &str)],
7487 ) {
7488 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7489 assert_eq!(
7490 params.text_document_position.text_document.uri,
7491 lsp::Url::from_file_path(path).unwrap()
7492 );
7493 assert_eq!(
7494 params.text_document_position.position,
7495 lsp::Position::new(position.row, position.column)
7496 );
7497
7498 let completions = completions
7499 .iter()
7500 .map(|(range, new_text)| lsp::CompletionItem {
7501 label: new_text.to_string(),
7502 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7503 range: lsp::Range::new(
7504 lsp::Position::new(range.start.row, range.start.column),
7505 lsp::Position::new(range.start.row, range.start.column),
7506 ),
7507 new_text: new_text.to_string(),
7508 })),
7509 ..Default::default()
7510 })
7511 .collect();
7512 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7513 .await;
7514 }
7515
7516 async fn handle_resolve_completion_request(
7517 fake: &mut FakeLanguageServer,
7518 edit: Option<(Range<Point>, &str)>,
7519 ) {
7520 let (id, _) = fake
7521 .receive_request::<lsp::request::ResolveCompletionItem>()
7522 .await;
7523 fake.respond(
7524 id,
7525 lsp::CompletionItem {
7526 additional_text_edits: edit.map(|(range, new_text)| {
7527 vec![lsp::TextEdit::new(
7528 lsp::Range::new(
7529 lsp::Position::new(range.start.row, range.start.column),
7530 lsp::Position::new(range.end.row, range.end.column),
7531 ),
7532 new_text.to_string(),
7533 )]
7534 }),
7535 ..Default::default()
7536 },
7537 )
7538 .await;
7539 }
7540 }
7541
7542 #[gpui::test]
7543 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7544 let settings = cx.read(EditorSettings::test);
7545 let language = Arc::new(Language::new(
7546 LanguageConfig {
7547 line_comment: Some("// ".to_string()),
7548 ..Default::default()
7549 },
7550 Some(tree_sitter_rust::language()),
7551 ));
7552
7553 let text = "
7554 fn a() {
7555 //b();
7556 // c();
7557 // d();
7558 }
7559 "
7560 .unindent();
7561
7562 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7563 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7564 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7565
7566 view.update(&mut cx, |editor, cx| {
7567 // If multiple selections intersect a line, the line is only
7568 // toggled once.
7569 editor.select_display_ranges(
7570 &[
7571 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7572 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7573 ],
7574 cx,
7575 );
7576 editor.toggle_comments(&ToggleComments, cx);
7577 assert_eq!(
7578 editor.text(cx),
7579 "
7580 fn a() {
7581 b();
7582 c();
7583 d();
7584 }
7585 "
7586 .unindent()
7587 );
7588
7589 // The comment prefix is inserted at the same column for every line
7590 // in a selection.
7591 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7592 editor.toggle_comments(&ToggleComments, cx);
7593 assert_eq!(
7594 editor.text(cx),
7595 "
7596 fn a() {
7597 // b();
7598 // c();
7599 // d();
7600 }
7601 "
7602 .unindent()
7603 );
7604
7605 // If a selection ends at the beginning of a line, that line is not toggled.
7606 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7607 editor.toggle_comments(&ToggleComments, cx);
7608 assert_eq!(
7609 editor.text(cx),
7610 "
7611 fn a() {
7612 // b();
7613 c();
7614 // d();
7615 }
7616 "
7617 .unindent()
7618 );
7619 });
7620 }
7621
7622 #[gpui::test]
7623 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7624 let settings = EditorSettings::test(cx);
7625 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7626 let multibuffer = cx.add_model(|cx| {
7627 let mut multibuffer = MultiBuffer::new(0);
7628 multibuffer.push_excerpt(
7629 ExcerptProperties {
7630 buffer: &buffer,
7631 range: Point::new(0, 0)..Point::new(0, 4),
7632 },
7633 cx,
7634 );
7635 multibuffer.push_excerpt(
7636 ExcerptProperties {
7637 buffer: &buffer,
7638 range: Point::new(1, 0)..Point::new(1, 4),
7639 },
7640 cx,
7641 );
7642 multibuffer
7643 });
7644
7645 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7646
7647 let (_, view) = cx.add_window(Default::default(), |cx| {
7648 build_editor(multibuffer, settings, cx)
7649 });
7650 view.update(cx, |view, cx| {
7651 view.select_display_ranges(
7652 &[
7653 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7654 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7655 ],
7656 cx,
7657 );
7658
7659 view.handle_input(&Input("X".to_string()), cx);
7660 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7661 assert_eq!(
7662 view.selected_display_ranges(cx),
7663 &[
7664 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7665 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7666 ]
7667 )
7668 });
7669 }
7670
7671 #[gpui::test]
7672 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7673 let settings = EditorSettings::test(cx);
7674 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7675 let multibuffer = cx.add_model(|cx| {
7676 let mut multibuffer = MultiBuffer::new(0);
7677 multibuffer.push_excerpt(
7678 ExcerptProperties {
7679 buffer: &buffer,
7680 range: Point::new(0, 0)..Point::new(1, 4),
7681 },
7682 cx,
7683 );
7684 multibuffer.push_excerpt(
7685 ExcerptProperties {
7686 buffer: &buffer,
7687 range: Point::new(1, 0)..Point::new(2, 4),
7688 },
7689 cx,
7690 );
7691 multibuffer
7692 });
7693
7694 assert_eq!(
7695 multibuffer.read(cx).read(cx).text(),
7696 "aaaa\nbbbb\nbbbb\ncccc"
7697 );
7698
7699 let (_, view) = cx.add_window(Default::default(), |cx| {
7700 build_editor(multibuffer, settings, cx)
7701 });
7702 view.update(cx, |view, cx| {
7703 view.select_display_ranges(
7704 &[
7705 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7706 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7707 ],
7708 cx,
7709 );
7710
7711 view.handle_input(&Input("X".to_string()), cx);
7712 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7713 assert_eq!(
7714 view.selected_display_ranges(cx),
7715 &[
7716 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7717 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7718 ]
7719 );
7720
7721 view.newline(&Newline, cx);
7722 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7723 assert_eq!(
7724 view.selected_display_ranges(cx),
7725 &[
7726 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7727 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7728 ]
7729 );
7730 });
7731 }
7732
7733 #[gpui::test]
7734 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7735 let settings = EditorSettings::test(cx);
7736 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7737 let mut excerpt1_id = None;
7738 let multibuffer = cx.add_model(|cx| {
7739 let mut multibuffer = MultiBuffer::new(0);
7740 excerpt1_id = Some(multibuffer.push_excerpt(
7741 ExcerptProperties {
7742 buffer: &buffer,
7743 range: Point::new(0, 0)..Point::new(1, 4),
7744 },
7745 cx,
7746 ));
7747 multibuffer.push_excerpt(
7748 ExcerptProperties {
7749 buffer: &buffer,
7750 range: Point::new(1, 0)..Point::new(2, 4),
7751 },
7752 cx,
7753 );
7754 multibuffer
7755 });
7756 assert_eq!(
7757 multibuffer.read(cx).read(cx).text(),
7758 "aaaa\nbbbb\nbbbb\ncccc"
7759 );
7760 let (_, editor) = cx.add_window(Default::default(), |cx| {
7761 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7762 editor.select_display_ranges(
7763 &[
7764 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7765 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7766 ],
7767 cx,
7768 );
7769 editor
7770 });
7771
7772 // Refreshing selections is a no-op when excerpts haven't changed.
7773 editor.update(cx, |editor, cx| {
7774 editor.refresh_selections(cx);
7775 assert_eq!(
7776 editor.selected_display_ranges(cx),
7777 [
7778 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7779 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7780 ]
7781 );
7782 });
7783
7784 multibuffer.update(cx, |multibuffer, cx| {
7785 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7786 });
7787 editor.update(cx, |editor, cx| {
7788 // Removing an excerpt causes the first selection to become degenerate.
7789 assert_eq!(
7790 editor.selected_display_ranges(cx),
7791 [
7792 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7793 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7794 ]
7795 );
7796
7797 // Refreshing selections will relocate the first selection to the original buffer
7798 // location.
7799 editor.refresh_selections(cx);
7800 assert_eq!(
7801 editor.selected_display_ranges(cx),
7802 [
7803 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7804 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7805 ]
7806 );
7807 });
7808 }
7809
7810 #[gpui::test]
7811 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7812 let settings = cx.read(EditorSettings::test);
7813 let language = Arc::new(Language::new(
7814 LanguageConfig {
7815 brackets: vec![
7816 BracketPair {
7817 start: "{".to_string(),
7818 end: "}".to_string(),
7819 close: true,
7820 newline: true,
7821 },
7822 BracketPair {
7823 start: "/* ".to_string(),
7824 end: " */".to_string(),
7825 close: true,
7826 newline: true,
7827 },
7828 ],
7829 ..Default::default()
7830 },
7831 Some(tree_sitter_rust::language()),
7832 ));
7833
7834 let text = concat!(
7835 "{ }\n", // Suppress rustfmt
7836 " x\n", //
7837 " /* */\n", //
7838 "x\n", //
7839 "{{} }\n", //
7840 );
7841
7842 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7843 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7844 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7845 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7846 .await;
7847
7848 view.update(&mut cx, |view, cx| {
7849 view.select_display_ranges(
7850 &[
7851 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7852 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7853 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7854 ],
7855 cx,
7856 );
7857 view.newline(&Newline, cx);
7858
7859 assert_eq!(
7860 view.buffer().read(cx).read(cx).text(),
7861 concat!(
7862 "{ \n", // Suppress rustfmt
7863 "\n", //
7864 "}\n", //
7865 " x\n", //
7866 " /* \n", //
7867 " \n", //
7868 " */\n", //
7869 "x\n", //
7870 "{{} \n", //
7871 "}\n", //
7872 )
7873 );
7874 });
7875 }
7876
7877 #[gpui::test]
7878 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
7879 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
7880 let settings = EditorSettings::test(&cx);
7881 let (_, editor) = cx.add_window(Default::default(), |cx| {
7882 build_editor(buffer.clone(), settings, cx)
7883 });
7884
7885 editor.update(cx, |editor, cx| {
7886 struct Type1;
7887 struct Type2;
7888
7889 let buffer = buffer.read(cx).snapshot(cx);
7890
7891 let anchor_range = |range: Range<Point>| {
7892 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
7893 };
7894
7895 editor.highlight_ranges::<Type1>(
7896 vec![
7897 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
7898 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
7899 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
7900 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
7901 ],
7902 Color::red(),
7903 cx,
7904 );
7905 editor.highlight_ranges::<Type2>(
7906 vec![
7907 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
7908 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
7909 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
7910 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
7911 ],
7912 Color::green(),
7913 cx,
7914 );
7915
7916 let snapshot = editor.snapshot(cx);
7917 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
7918 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
7919 &snapshot,
7920 );
7921 // Enforce a consistent ordering based on color without relying on the ordering of the
7922 // highlight's `TypeId` which is non-deterministic.
7923 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
7924 assert_eq!(
7925 highlighted_ranges,
7926 &[
7927 (
7928 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
7929 Color::green(),
7930 ),
7931 (
7932 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
7933 Color::green(),
7934 ),
7935 (
7936 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
7937 Color::red(),
7938 ),
7939 (
7940 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7941 Color::red(),
7942 ),
7943 ]
7944 );
7945 assert_eq!(
7946 editor.highlighted_ranges_in_range(
7947 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
7948 &snapshot,
7949 ),
7950 &[(
7951 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
7952 Color::red(),
7953 )]
7954 );
7955 });
7956 }
7957
7958 #[test]
7959 fn test_combine_syntax_and_fuzzy_match_highlights() {
7960 let string = "abcdefghijklmnop";
7961 let default = HighlightStyle::default();
7962 let syntax_ranges = [
7963 (
7964 0..3,
7965 HighlightStyle {
7966 color: Color::red(),
7967 ..default
7968 },
7969 ),
7970 (
7971 4..8,
7972 HighlightStyle {
7973 color: Color::green(),
7974 ..default
7975 },
7976 ),
7977 ];
7978 let match_indices = [4, 6, 7, 8];
7979 assert_eq!(
7980 combine_syntax_and_fuzzy_match_highlights(
7981 &string,
7982 default,
7983 syntax_ranges.into_iter(),
7984 &match_indices,
7985 ),
7986 &[
7987 (
7988 0..3,
7989 HighlightStyle {
7990 color: Color::red(),
7991 ..default
7992 },
7993 ),
7994 (
7995 4..5,
7996 HighlightStyle {
7997 color: Color::green(),
7998 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
7999 ..default
8000 },
8001 ),
8002 (
8003 5..6,
8004 HighlightStyle {
8005 color: Color::green(),
8006 ..default
8007 },
8008 ),
8009 (
8010 6..8,
8011 HighlightStyle {
8012 color: Color::green(),
8013 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8014 ..default
8015 },
8016 ),
8017 (
8018 8..9,
8019 HighlightStyle {
8020 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8021 ..default
8022 },
8023 ),
8024 ]
8025 );
8026 }
8027
8028 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8029 let point = DisplayPoint::new(row as u32, column as u32);
8030 point..point
8031 }
8032
8033 fn build_editor(
8034 buffer: ModelHandle<MultiBuffer>,
8035 settings: EditorSettings,
8036 cx: &mut ViewContext<Editor>,
8037 ) -> Editor {
8038 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
8039 }
8040}
8041
8042trait RangeExt<T> {
8043 fn sorted(&self) -> Range<T>;
8044 fn to_inclusive(&self) -> RangeInclusive<T>;
8045}
8046
8047impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8048 fn sorted(&self) -> Self {
8049 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8050 }
8051
8052 fn to_inclusive(&self) -> RangeInclusive<T> {
8053 self.start.clone()..=self.end.clone()
8054 }
8055}