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, CodeAction, 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>);
129action!(ConfirmCodeAction, Option<usize>);
130
131pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
132 path_openers.push(Box::new(items::BufferOpener));
133 cx.add_bindings(vec![
134 Binding::new("escape", Cancel, Some("Editor")),
135 Binding::new("backspace", Backspace, Some("Editor")),
136 Binding::new("ctrl-h", Backspace, Some("Editor")),
137 Binding::new("delete", Delete, Some("Editor")),
138 Binding::new("ctrl-d", Delete, Some("Editor")),
139 Binding::new("enter", Newline, Some("Editor && mode == full")),
140 Binding::new(
141 "alt-enter",
142 Input("\n".into()),
143 Some("Editor && mode == auto_height"),
144 ),
145 Binding::new(
146 "enter",
147 ConfirmCompletion(None),
148 Some("Editor && showing_completions"),
149 ),
150 Binding::new(
151 "enter",
152 ConfirmCodeAction(None),
153 Some("Editor && showing_code_actions"),
154 ),
155 Binding::new("tab", Tab, Some("Editor")),
156 Binding::new(
157 "tab",
158 ConfirmCompletion(None),
159 Some("Editor && showing_completions"),
160 ),
161 Binding::new("shift-tab", Outdent, Some("Editor")),
162 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
163 Binding::new(
164 "alt-backspace",
165 DeleteToPreviousWordBoundary,
166 Some("Editor"),
167 ),
168 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
169 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
170 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
171 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
172 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
173 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
174 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
175 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
176 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
177 Binding::new("cmd-x", Cut, Some("Editor")),
178 Binding::new("cmd-c", Copy, Some("Editor")),
179 Binding::new("cmd-v", Paste, Some("Editor")),
180 Binding::new("cmd-z", Undo, Some("Editor")),
181 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
182 Binding::new("up", MoveUp, Some("Editor")),
183 Binding::new("down", MoveDown, Some("Editor")),
184 Binding::new("left", MoveLeft, Some("Editor")),
185 Binding::new("right", MoveRight, Some("Editor")),
186 Binding::new("ctrl-p", MoveUp, Some("Editor")),
187 Binding::new("ctrl-n", MoveDown, Some("Editor")),
188 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
189 Binding::new("ctrl-f", MoveRight, Some("Editor")),
190 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
191 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
192 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
193 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
194 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
195 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
196 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
197 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
198 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
199 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
200 Binding::new("shift-up", SelectUp, Some("Editor")),
201 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
202 Binding::new("shift-down", SelectDown, Some("Editor")),
203 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
204 Binding::new("shift-left", SelectLeft, Some("Editor")),
205 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
206 Binding::new("shift-right", SelectRight, Some("Editor")),
207 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
208 Binding::new(
209 "alt-shift-left",
210 SelectToPreviousWordBoundary,
211 Some("Editor"),
212 ),
213 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
214 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
215 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
216 Binding::new(
217 "cmd-shift-left",
218 SelectToBeginningOfLine(true),
219 Some("Editor"),
220 ),
221 Binding::new(
222 "ctrl-shift-A",
223 SelectToBeginningOfLine(true),
224 Some("Editor"),
225 ),
226 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
227 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
228 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
229 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
230 Binding::new("cmd-a", SelectAll, Some("Editor")),
231 Binding::new("cmd-l", SelectLine, Some("Editor")),
232 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
233 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
234 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
235 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
236 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
237 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
238 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
239 Binding::new("cmd-/", ToggleComments, Some("Editor")),
240 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
241 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
242 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
243 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
244 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
245 Binding::new("f12", GoToDefinition, Some("Editor")),
246 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
247 Binding::new("pageup", PageUp, Some("Editor")),
248 Binding::new("pagedown", PageDown, Some("Editor")),
249 Binding::new("alt-cmd-[", Fold, Some("Editor")),
250 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
251 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
252 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
253 Binding::new("cmd-.", ShowCodeActions, Some("Editor")),
254 ]);
255
256 cx.add_action(Editor::open_new);
257 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
258 cx.add_action(Editor::select);
259 cx.add_action(Editor::cancel);
260 cx.add_action(Editor::handle_input);
261 cx.add_action(Editor::newline);
262 cx.add_action(Editor::backspace);
263 cx.add_action(Editor::delete);
264 cx.add_action(Editor::tab);
265 cx.add_action(Editor::outdent);
266 cx.add_action(Editor::delete_line);
267 cx.add_action(Editor::delete_to_previous_word_boundary);
268 cx.add_action(Editor::delete_to_next_word_boundary);
269 cx.add_action(Editor::delete_to_beginning_of_line);
270 cx.add_action(Editor::delete_to_end_of_line);
271 cx.add_action(Editor::cut_to_end_of_line);
272 cx.add_action(Editor::duplicate_line);
273 cx.add_action(Editor::move_line_up);
274 cx.add_action(Editor::move_line_down);
275 cx.add_action(Editor::cut);
276 cx.add_action(Editor::copy);
277 cx.add_action(Editor::paste);
278 cx.add_action(Editor::undo);
279 cx.add_action(Editor::redo);
280 cx.add_action(Editor::move_up);
281 cx.add_action(Editor::move_down);
282 cx.add_action(Editor::move_left);
283 cx.add_action(Editor::move_right);
284 cx.add_action(Editor::move_to_previous_word_boundary);
285 cx.add_action(Editor::move_to_next_word_boundary);
286 cx.add_action(Editor::move_to_beginning_of_line);
287 cx.add_action(Editor::move_to_end_of_line);
288 cx.add_action(Editor::move_to_beginning);
289 cx.add_action(Editor::move_to_end);
290 cx.add_action(Editor::select_up);
291 cx.add_action(Editor::select_down);
292 cx.add_action(Editor::select_left);
293 cx.add_action(Editor::select_right);
294 cx.add_action(Editor::select_to_previous_word_boundary);
295 cx.add_action(Editor::select_to_next_word_boundary);
296 cx.add_action(Editor::select_to_beginning_of_line);
297 cx.add_action(Editor::select_to_end_of_line);
298 cx.add_action(Editor::select_to_beginning);
299 cx.add_action(Editor::select_to_end);
300 cx.add_action(Editor::select_all);
301 cx.add_action(Editor::select_line);
302 cx.add_action(Editor::split_selection_into_lines);
303 cx.add_action(Editor::add_selection_above);
304 cx.add_action(Editor::add_selection_below);
305 cx.add_action(Editor::select_next);
306 cx.add_action(Editor::toggle_comments);
307 cx.add_action(Editor::select_larger_syntax_node);
308 cx.add_action(Editor::select_smaller_syntax_node);
309 cx.add_action(Editor::move_to_enclosing_bracket);
310 cx.add_action(Editor::show_next_diagnostic);
311 cx.add_action(Editor::go_to_definition);
312 cx.add_action(Editor::page_up);
313 cx.add_action(Editor::page_down);
314 cx.add_action(Editor::fold);
315 cx.add_action(Editor::unfold);
316 cx.add_action(Editor::fold_selected_ranges);
317 cx.add_action(Editor::show_completions);
318 cx.add_action(Editor::show_code_actions);
319 cx.add_async_action(Editor::confirm_completion);
320 cx.add_async_action(Editor::confirm_code_action);
321}
322
323trait SelectionExt {
324 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
325 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
326 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
327 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
328 -> Range<u32>;
329}
330
331trait InvalidationRegion {
332 fn ranges(&self) -> &[Range<Anchor>];
333}
334
335#[derive(Clone, Debug)]
336pub enum SelectPhase {
337 Begin {
338 position: DisplayPoint,
339 add: bool,
340 click_count: usize,
341 },
342 BeginColumnar {
343 position: DisplayPoint,
344 overshoot: u32,
345 },
346 Extend {
347 position: DisplayPoint,
348 click_count: usize,
349 },
350 Update {
351 position: DisplayPoint,
352 overshoot: u32,
353 scroll_position: Vector2F,
354 },
355 End,
356}
357
358#[derive(Clone, Debug)]
359enum SelectMode {
360 Character,
361 Word(Range<Anchor>),
362 Line(Range<Anchor>),
363 All,
364}
365
366#[derive(PartialEq, Eq)]
367pub enum Autoscroll {
368 Fit,
369 Center,
370 Newest,
371}
372
373#[derive(Copy, Clone, PartialEq, Eq)]
374pub enum EditorMode {
375 SingleLine,
376 AutoHeight { max_lines: usize },
377 Full,
378}
379
380#[derive(Clone)]
381pub struct EditorSettings {
382 pub tab_size: usize,
383 pub soft_wrap: SoftWrap,
384 pub style: EditorStyle,
385}
386
387#[derive(Clone)]
388pub enum SoftWrap {
389 None,
390 EditorWidth,
391 Column(u32),
392}
393
394type CompletionId = usize;
395
396pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
397
398pub struct Editor {
399 handle: WeakViewHandle<Self>,
400 buffer: ModelHandle<MultiBuffer>,
401 display_map: ModelHandle<DisplayMap>,
402 next_selection_id: usize,
403 selections: Arc<[Selection<Anchor>]>,
404 pending_selection: Option<PendingSelection>,
405 columnar_selection_tail: Option<Anchor>,
406 add_selections_state: Option<AddSelectionsState>,
407 select_next_state: Option<SelectNextState>,
408 selection_history:
409 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
410 autoclose_stack: InvalidationStack<BracketPairState>,
411 snippet_stack: InvalidationStack<SnippetState>,
412 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
413 active_diagnostics: Option<ActiveDiagnosticGroup>,
414 scroll_position: Vector2F,
415 scroll_top_anchor: Option<Anchor>,
416 autoscroll_request: Option<Autoscroll>,
417 build_settings: BuildSettings,
418 focused: bool,
419 show_local_cursors: bool,
420 blink_epoch: usize,
421 blinking_paused: bool,
422 mode: EditorMode,
423 vertical_scroll_margin: f32,
424 placeholder_text: Option<Arc<str>>,
425 highlighted_rows: Option<Range<u32>>,
426 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
427 nav_history: Option<ItemNavHistory>,
428 context_menu: Option<ContextMenu>,
429 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
430 next_completion_id: CompletionId,
431}
432
433pub struct EditorSnapshot {
434 pub mode: EditorMode,
435 pub display_snapshot: DisplaySnapshot,
436 pub placeholder_text: Option<Arc<str>>,
437 is_focused: bool,
438 scroll_position: Vector2F,
439 scroll_top_anchor: Option<Anchor>,
440}
441
442struct PendingSelection {
443 selection: Selection<Anchor>,
444 mode: SelectMode,
445}
446
447struct AddSelectionsState {
448 above: bool,
449 stack: Vec<usize>,
450}
451
452struct SelectNextState {
453 query: AhoCorasick,
454 wordwise: bool,
455 done: bool,
456}
457
458struct BracketPairState {
459 ranges: Vec<Range<Anchor>>,
460 pair: BracketPair,
461}
462
463struct SnippetState {
464 ranges: Vec<Vec<Range<Anchor>>>,
465 active_index: usize,
466}
467
468struct InvalidationStack<T>(Vec<T>);
469
470enum ContextMenu {
471 Completions(CompletionsMenu),
472 CodeActions(CodeActionsMenu),
473}
474
475impl ContextMenu {
476 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
477 if self.visible() {
478 match self {
479 ContextMenu::Completions(menu) => menu.select_prev(cx),
480 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
481 }
482 true
483 } else {
484 false
485 }
486 }
487
488 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
489 if self.visible() {
490 match self {
491 ContextMenu::Completions(menu) => menu.select_next(cx),
492 ContextMenu::CodeActions(menu) => menu.select_next(cx),
493 }
494 true
495 } else {
496 false
497 }
498 }
499
500 fn visible(&self) -> bool {
501 match self {
502 ContextMenu::Completions(menu) => menu.visible(),
503 ContextMenu::CodeActions(menu) => menu.visible(),
504 }
505 }
506
507 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
508 match self {
509 ContextMenu::Completions(menu) => menu.render(build_settings, cx),
510 ContextMenu::CodeActions(menu) => menu.render(build_settings, cx),
511 }
512 }
513}
514
515struct CompletionsMenu {
516 id: CompletionId,
517 initial_position: Anchor,
518 completions: Arc<[Completion<Anchor>]>,
519 match_candidates: Vec<StringMatchCandidate>,
520 matches: Arc<[StringMatch]>,
521 selected_item: usize,
522 list: UniformListState,
523}
524
525impl CompletionsMenu {
526 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
527 if self.selected_item > 0 {
528 self.selected_item -= 1;
529 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
530 }
531 cx.notify();
532 }
533
534 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
535 if self.selected_item + 1 < self.matches.len() {
536 self.selected_item += 1;
537 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
538 }
539 cx.notify();
540 }
541
542 fn visible(&self) -> bool {
543 !self.matches.is_empty()
544 }
545
546 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
547 enum CompletionTag {}
548
549 let settings = build_settings(cx);
550 let completions = self.completions.clone();
551 let matches = self.matches.clone();
552 let selected_item = self.selected_item;
553 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
554 let settings = build_settings(cx);
555 let start_ix = range.start;
556 for (ix, mat) in matches[range].iter().enumerate() {
557 let completion = &completions[mat.candidate_id];
558 let item_ix = start_ix + ix;
559 items.push(
560 MouseEventHandler::new::<CompletionTag, _, _, _>(
561 mat.candidate_id,
562 cx,
563 |state, _| {
564 let item_style = if item_ix == selected_item {
565 settings.style.autocomplete.selected_item
566 } else if state.hovered {
567 settings.style.autocomplete.hovered_item
568 } else {
569 settings.style.autocomplete.item
570 };
571
572 Text::new(completion.label.text.clone(), settings.style.text.clone())
573 .with_soft_wrap(false)
574 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
575 &completion.label.text,
576 settings.style.text.color.into(),
577 styled_runs_for_completion_label(
578 &completion.label,
579 settings.style.text.color,
580 &settings.style.syntax,
581 ),
582 &mat.positions,
583 ))
584 .contained()
585 .with_style(item_style)
586 .boxed()
587 },
588 )
589 .with_cursor_style(CursorStyle::PointingHand)
590 .on_mouse_down(move |cx| {
591 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
592 })
593 .boxed(),
594 );
595 }
596 })
597 .with_width_from_item(
598 self.matches
599 .iter()
600 .enumerate()
601 .max_by_key(|(_, mat)| {
602 self.completions[mat.candidate_id]
603 .label
604 .text
605 .chars()
606 .count()
607 })
608 .map(|(ix, _)| ix),
609 )
610 .contained()
611 .with_style(settings.style.autocomplete.container)
612 .boxed()
613 }
614
615 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
616 let mut matches = if let Some(query) = query {
617 fuzzy::match_strings(
618 &self.match_candidates,
619 query,
620 false,
621 100,
622 &Default::default(),
623 executor,
624 )
625 .await
626 } else {
627 self.match_candidates
628 .iter()
629 .enumerate()
630 .map(|(candidate_id, candidate)| StringMatch {
631 candidate_id,
632 score: Default::default(),
633 positions: Default::default(),
634 string: candidate.string.clone(),
635 })
636 .collect()
637 };
638 matches.sort_unstable_by_key(|mat| {
639 (
640 Reverse(OrderedFloat(mat.score)),
641 self.completions[mat.candidate_id].sort_key(),
642 )
643 });
644
645 for mat in &mut matches {
646 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
647 for position in &mut mat.positions {
648 *position += filter_start;
649 }
650 }
651
652 self.matches = matches.into();
653 }
654}
655
656struct CodeActionsMenu {
657 actions: Arc<[CodeAction<Anchor>]>,
658 selected_item: usize,
659 list: UniformListState,
660}
661
662impl CodeActionsMenu {
663 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
664 if self.selected_item > 0 {
665 self.selected_item -= 1;
666 cx.notify()
667 }
668 }
669
670 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
671 if self.selected_item + 1 < self.actions.len() {
672 self.selected_item += 1;
673 cx.notify()
674 }
675 }
676
677 fn visible(&self) -> bool {
678 !self.actions.is_empty()
679 }
680
681 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
682 enum ActionTag {}
683
684 let settings = build_settings(cx);
685 let actions = self.actions.clone();
686 let selected_item = self.selected_item;
687 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
688 let settings = build_settings(cx);
689 let start_ix = range.start;
690 for (ix, action) in actions[range].iter().enumerate() {
691 let item_ix = start_ix + ix;
692 items.push(
693 MouseEventHandler::new::<ActionTag, _, _, _>(item_ix, cx, |state, _| {
694 let item_style = if item_ix == selected_item {
695 settings.style.autocomplete.selected_item
696 } else if state.hovered {
697 settings.style.autocomplete.hovered_item
698 } else {
699 settings.style.autocomplete.item
700 };
701
702 Text::new(action.lsp_action.title.clone(), settings.style.text.clone())
703 .with_soft_wrap(false)
704 .contained()
705 .with_style(item_style)
706 .boxed()
707 })
708 .with_cursor_style(CursorStyle::PointingHand)
709 .on_mouse_down(move |cx| {
710 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
711 })
712 .boxed(),
713 );
714 }
715 })
716 .with_width_from_item(
717 self.actions
718 .iter()
719 .enumerate()
720 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
721 .map(|(ix, _)| ix),
722 )
723 .contained()
724 .with_style(settings.style.autocomplete.container)
725 .boxed()
726 }
727}
728
729#[derive(Debug)]
730struct ActiveDiagnosticGroup {
731 primary_range: Range<Anchor>,
732 primary_message: String,
733 blocks: HashMap<BlockId, Diagnostic>,
734 is_valid: bool,
735}
736
737#[derive(Serialize, Deserialize)]
738struct ClipboardSelection {
739 len: usize,
740 is_entire_line: bool,
741}
742
743pub struct NavigationData {
744 anchor: Anchor,
745 offset: usize,
746}
747
748impl Editor {
749 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
750 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
751 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
752 let mut view = Self::for_buffer(buffer, build_settings, cx);
753 view.mode = EditorMode::SingleLine;
754 view
755 }
756
757 pub fn auto_height(
758 max_lines: usize,
759 build_settings: BuildSettings,
760 cx: &mut ViewContext<Self>,
761 ) -> Self {
762 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
763 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
764 let mut view = Self::for_buffer(buffer, build_settings, cx);
765 view.mode = EditorMode::AutoHeight { max_lines };
766 view
767 }
768
769 pub fn for_buffer(
770 buffer: ModelHandle<MultiBuffer>,
771 build_settings: BuildSettings,
772 cx: &mut ViewContext<Self>,
773 ) -> Self {
774 Self::new(buffer, build_settings, cx)
775 }
776
777 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
778 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
779 clone.scroll_position = self.scroll_position;
780 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
781 clone.nav_history = self
782 .nav_history
783 .as_ref()
784 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
785 clone
786 }
787
788 pub fn new(
789 buffer: ModelHandle<MultiBuffer>,
790 build_settings: BuildSettings,
791 cx: &mut ViewContext<Self>,
792 ) -> Self {
793 let settings = build_settings(cx);
794 let display_map = cx.add_model(|cx| {
795 DisplayMap::new(
796 buffer.clone(),
797 settings.tab_size,
798 settings.style.text.font_id,
799 settings.style.text.font_size,
800 None,
801 cx,
802 )
803 });
804 cx.observe(&buffer, Self::on_buffer_changed).detach();
805 cx.subscribe(&buffer, Self::on_buffer_event).detach();
806 cx.observe(&display_map, Self::on_display_map_changed)
807 .detach();
808
809 let mut this = Self {
810 handle: cx.weak_handle(),
811 buffer,
812 display_map,
813 selections: Arc::from([]),
814 pending_selection: None,
815 columnar_selection_tail: None,
816 next_selection_id: 0,
817 add_selections_state: None,
818 select_next_state: None,
819 selection_history: Default::default(),
820 autoclose_stack: Default::default(),
821 snippet_stack: Default::default(),
822 select_larger_syntax_node_stack: Vec::new(),
823 active_diagnostics: None,
824 build_settings,
825 scroll_position: Vector2F::zero(),
826 scroll_top_anchor: None,
827 autoscroll_request: None,
828 focused: false,
829 show_local_cursors: false,
830 blink_epoch: 0,
831 blinking_paused: false,
832 mode: EditorMode::Full,
833 vertical_scroll_margin: 3.0,
834 placeholder_text: None,
835 highlighted_rows: None,
836 highlighted_ranges: Default::default(),
837 nav_history: None,
838 context_menu: None,
839 completion_tasks: Default::default(),
840 next_completion_id: 0,
841 };
842 let selection = Selection {
843 id: post_inc(&mut this.next_selection_id),
844 start: 0,
845 end: 0,
846 reversed: false,
847 goal: SelectionGoal::None,
848 };
849 this.update_selections(vec![selection], None, cx);
850 this
851 }
852
853 pub fn open_new(
854 workspace: &mut Workspace,
855 _: &workspace::OpenNew,
856 cx: &mut ViewContext<Workspace>,
857 ) {
858 let buffer = cx
859 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
860 workspace.open_item(BufferItemHandle(buffer), cx);
861 }
862
863 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
864 self.buffer.read(cx).replica_id()
865 }
866
867 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
868 &self.buffer
869 }
870
871 pub fn title(&self, cx: &AppContext) -> String {
872 let filename = self
873 .buffer()
874 .read(cx)
875 .file(cx)
876 .map(|file| file.file_name(cx));
877 if let Some(name) = filename {
878 name.to_string_lossy().into()
879 } else {
880 "untitled".into()
881 }
882 }
883
884 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
885 EditorSnapshot {
886 mode: self.mode,
887 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
888 scroll_position: self.scroll_position,
889 scroll_top_anchor: self.scroll_top_anchor.clone(),
890 placeholder_text: self.placeholder_text.clone(),
891 is_focused: self
892 .handle
893 .upgrade(cx)
894 .map_or(false, |handle| handle.is_focused(cx)),
895 }
896 }
897
898 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
899 self.buffer.read(cx).language(cx)
900 }
901
902 pub fn set_placeholder_text(
903 &mut self,
904 placeholder_text: impl Into<Arc<str>>,
905 cx: &mut ViewContext<Self>,
906 ) {
907 self.placeholder_text = Some(placeholder_text.into());
908 cx.notify();
909 }
910
911 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
912 self.vertical_scroll_margin = margin_rows as f32;
913 cx.notify();
914 }
915
916 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
917 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
918
919 if scroll_position.y() == 0. {
920 self.scroll_top_anchor = None;
921 self.scroll_position = scroll_position;
922 } else {
923 let scroll_top_buffer_offset =
924 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
925 let anchor = map
926 .buffer_snapshot
927 .anchor_at(scroll_top_buffer_offset, Bias::Right);
928 self.scroll_position = vec2f(
929 scroll_position.x(),
930 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
931 );
932 self.scroll_top_anchor = Some(anchor);
933 }
934
935 cx.notify();
936 }
937
938 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
939 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
940 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
941 }
942
943 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
944 if max < self.scroll_position.x() {
945 self.scroll_position.set_x(max);
946 true
947 } else {
948 false
949 }
950 }
951
952 pub fn autoscroll_vertically(
953 &mut self,
954 viewport_height: f32,
955 line_height: f32,
956 cx: &mut ViewContext<Self>,
957 ) -> bool {
958 let visible_lines = viewport_height / line_height;
959 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
960 let mut scroll_position =
961 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
962 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
963 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
964 } else {
965 display_map.max_point().row().saturating_sub(1) as f32
966 };
967 if scroll_position.y() > max_scroll_top {
968 scroll_position.set_y(max_scroll_top);
969 self.set_scroll_position(scroll_position, cx);
970 }
971
972 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
973 autoscroll
974 } else {
975 return false;
976 };
977
978 let first_cursor_top;
979 let last_cursor_bottom;
980 if let Some(highlighted_rows) = &self.highlighted_rows {
981 first_cursor_top = highlighted_rows.start as f32;
982 last_cursor_bottom = first_cursor_top + 1.;
983 } else if autoscroll == Autoscroll::Newest {
984 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
985 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
986 last_cursor_bottom = first_cursor_top + 1.;
987 } else {
988 let selections = self.local_selections::<Point>(cx);
989 first_cursor_top = selections
990 .first()
991 .unwrap()
992 .head()
993 .to_display_point(&display_map)
994 .row() as f32;
995 last_cursor_bottom = selections
996 .last()
997 .unwrap()
998 .head()
999 .to_display_point(&display_map)
1000 .row() as f32
1001 + 1.0;
1002 }
1003
1004 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1005 0.
1006 } else {
1007 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1008 };
1009 if margin < 0.0 {
1010 return false;
1011 }
1012
1013 match autoscroll {
1014 Autoscroll::Fit | Autoscroll::Newest => {
1015 let margin = margin.min(self.vertical_scroll_margin);
1016 let target_top = (first_cursor_top - margin).max(0.0);
1017 let target_bottom = last_cursor_bottom + margin;
1018 let start_row = scroll_position.y();
1019 let end_row = start_row + visible_lines;
1020
1021 if target_top < start_row {
1022 scroll_position.set_y(target_top);
1023 self.set_scroll_position(scroll_position, cx);
1024 } else if target_bottom >= end_row {
1025 scroll_position.set_y(target_bottom - visible_lines);
1026 self.set_scroll_position(scroll_position, cx);
1027 }
1028 }
1029 Autoscroll::Center => {
1030 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1031 self.set_scroll_position(scroll_position, cx);
1032 }
1033 }
1034
1035 true
1036 }
1037
1038 pub fn autoscroll_horizontally(
1039 &mut self,
1040 start_row: u32,
1041 viewport_width: f32,
1042 scroll_width: f32,
1043 max_glyph_width: f32,
1044 layouts: &[text_layout::Line],
1045 cx: &mut ViewContext<Self>,
1046 ) -> bool {
1047 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1048 let selections = self.local_selections::<Point>(cx);
1049
1050 let mut target_left;
1051 let mut target_right;
1052
1053 if self.highlighted_rows.is_some() {
1054 target_left = 0.0_f32;
1055 target_right = 0.0_f32;
1056 } else {
1057 target_left = std::f32::INFINITY;
1058 target_right = 0.0_f32;
1059 for selection in selections {
1060 let head = selection.head().to_display_point(&display_map);
1061 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1062 let start_column = head.column().saturating_sub(3);
1063 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1064 target_left = target_left.min(
1065 layouts[(head.row() - start_row) as usize]
1066 .x_for_index(start_column as usize),
1067 );
1068 target_right = target_right.max(
1069 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1070 + max_glyph_width,
1071 );
1072 }
1073 }
1074 }
1075
1076 target_right = target_right.min(scroll_width);
1077
1078 if target_right - target_left > viewport_width {
1079 return false;
1080 }
1081
1082 let scroll_left = self.scroll_position.x() * max_glyph_width;
1083 let scroll_right = scroll_left + viewport_width;
1084
1085 if target_left < scroll_left {
1086 self.scroll_position.set_x(target_left / max_glyph_width);
1087 true
1088 } else if target_right > scroll_right {
1089 self.scroll_position
1090 .set_x((target_right - viewport_width) / max_glyph_width);
1091 true
1092 } else {
1093 false
1094 }
1095 }
1096
1097 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1098 self.hide_context_menu(cx);
1099
1100 match phase {
1101 SelectPhase::Begin {
1102 position,
1103 add,
1104 click_count,
1105 } => self.begin_selection(*position, *add, *click_count, cx),
1106 SelectPhase::BeginColumnar {
1107 position,
1108 overshoot,
1109 } => self.begin_columnar_selection(*position, *overshoot, cx),
1110 SelectPhase::Extend {
1111 position,
1112 click_count,
1113 } => self.extend_selection(*position, *click_count, cx),
1114 SelectPhase::Update {
1115 position,
1116 overshoot,
1117 scroll_position,
1118 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1119 SelectPhase::End => self.end_selection(cx),
1120 }
1121 }
1122
1123 fn extend_selection(
1124 &mut self,
1125 position: DisplayPoint,
1126 click_count: usize,
1127 cx: &mut ViewContext<Self>,
1128 ) {
1129 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1130 let tail = self
1131 .newest_selection::<usize>(&display_map.buffer_snapshot)
1132 .tail();
1133 self.begin_selection(position, false, click_count, cx);
1134
1135 let position = position.to_offset(&display_map, Bias::Left);
1136 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1137 let pending = self.pending_selection.as_mut().unwrap();
1138
1139 if position >= tail {
1140 pending.selection.start = tail_anchor.clone();
1141 } else {
1142 pending.selection.end = tail_anchor.clone();
1143 pending.selection.reversed = true;
1144 }
1145
1146 match &mut pending.mode {
1147 SelectMode::Word(range) | SelectMode::Line(range) => {
1148 *range = tail_anchor.clone()..tail_anchor
1149 }
1150 _ => {}
1151 }
1152 }
1153
1154 fn begin_selection(
1155 &mut self,
1156 position: DisplayPoint,
1157 add: bool,
1158 click_count: usize,
1159 cx: &mut ViewContext<Self>,
1160 ) {
1161 if !self.focused {
1162 cx.focus_self();
1163 cx.emit(Event::Activate);
1164 }
1165
1166 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1167 let buffer = &display_map.buffer_snapshot;
1168 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1169
1170 let start;
1171 let end;
1172 let mode;
1173 match click_count {
1174 1 => {
1175 start = buffer.anchor_before(position.to_point(&display_map));
1176 end = start.clone();
1177 mode = SelectMode::Character;
1178 }
1179 2 => {
1180 let range = movement::surrounding_word(&display_map, position);
1181 start = buffer.anchor_before(range.start.to_point(&display_map));
1182 end = buffer.anchor_before(range.end.to_point(&display_map));
1183 mode = SelectMode::Word(start.clone()..end.clone());
1184 }
1185 3 => {
1186 let position = display_map
1187 .clip_point(position, Bias::Left)
1188 .to_point(&display_map);
1189 let line_start = display_map.prev_line_boundary(position).0;
1190 let next_line_start = buffer.clip_point(
1191 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1192 Bias::Left,
1193 );
1194 start = buffer.anchor_before(line_start);
1195 end = buffer.anchor_before(next_line_start);
1196 mode = SelectMode::Line(start.clone()..end.clone());
1197 }
1198 _ => {
1199 start = buffer.anchor_before(0);
1200 end = buffer.anchor_before(buffer.len());
1201 mode = SelectMode::All;
1202 }
1203 }
1204
1205 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1206
1207 let selection = Selection {
1208 id: post_inc(&mut self.next_selection_id),
1209 start,
1210 end,
1211 reversed: false,
1212 goal: SelectionGoal::None,
1213 };
1214
1215 if !add {
1216 self.update_selections::<usize>(Vec::new(), None, cx);
1217 } else if click_count > 1 {
1218 // Remove the newest selection since it was only added as part of this multi-click.
1219 let mut selections = self.local_selections(cx);
1220 selections.retain(|selection| selection.id != newest_selection.id);
1221 self.update_selections::<usize>(selections, None, cx)
1222 }
1223
1224 self.pending_selection = Some(PendingSelection { selection, mode });
1225
1226 cx.notify();
1227 }
1228
1229 fn begin_columnar_selection(
1230 &mut self,
1231 position: DisplayPoint,
1232 overshoot: u32,
1233 cx: &mut ViewContext<Self>,
1234 ) {
1235 if !self.focused {
1236 cx.focus_self();
1237 cx.emit(Event::Activate);
1238 }
1239
1240 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1241 let tail = self
1242 .newest_selection::<Point>(&display_map.buffer_snapshot)
1243 .tail();
1244 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1245
1246 self.select_columns(
1247 tail.to_display_point(&display_map),
1248 position,
1249 overshoot,
1250 &display_map,
1251 cx,
1252 );
1253 }
1254
1255 fn update_selection(
1256 &mut self,
1257 position: DisplayPoint,
1258 overshoot: u32,
1259 scroll_position: Vector2F,
1260 cx: &mut ViewContext<Self>,
1261 ) {
1262 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1263
1264 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1265 let tail = tail.to_display_point(&display_map);
1266 self.select_columns(tail, position, overshoot, &display_map, cx);
1267 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1268 let buffer = self.buffer.read(cx).snapshot(cx);
1269 let head;
1270 let tail;
1271 match mode {
1272 SelectMode::Character => {
1273 head = position.to_point(&display_map);
1274 tail = selection.tail().to_point(&buffer);
1275 }
1276 SelectMode::Word(original_range) => {
1277 let original_display_range = original_range.start.to_display_point(&display_map)
1278 ..original_range.end.to_display_point(&display_map);
1279 let original_buffer_range = original_display_range.start.to_point(&display_map)
1280 ..original_display_range.end.to_point(&display_map);
1281 if movement::is_inside_word(&display_map, position)
1282 || original_display_range.contains(&position)
1283 {
1284 let word_range = movement::surrounding_word(&display_map, position);
1285 if word_range.start < original_display_range.start {
1286 head = word_range.start.to_point(&display_map);
1287 } else {
1288 head = word_range.end.to_point(&display_map);
1289 }
1290 } else {
1291 head = position.to_point(&display_map);
1292 }
1293
1294 if head <= original_buffer_range.start {
1295 tail = original_buffer_range.end;
1296 } else {
1297 tail = original_buffer_range.start;
1298 }
1299 }
1300 SelectMode::Line(original_range) => {
1301 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1302
1303 let position = display_map
1304 .clip_point(position, Bias::Left)
1305 .to_point(&display_map);
1306 let line_start = display_map.prev_line_boundary(position).0;
1307 let next_line_start = buffer.clip_point(
1308 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1309 Bias::Left,
1310 );
1311
1312 if line_start < original_range.start {
1313 head = line_start
1314 } else {
1315 head = next_line_start
1316 }
1317
1318 if head <= original_range.start {
1319 tail = original_range.end;
1320 } else {
1321 tail = original_range.start;
1322 }
1323 }
1324 SelectMode::All => {
1325 return;
1326 }
1327 };
1328
1329 if head < tail {
1330 selection.start = buffer.anchor_before(head);
1331 selection.end = buffer.anchor_before(tail);
1332 selection.reversed = true;
1333 } else {
1334 selection.start = buffer.anchor_before(tail);
1335 selection.end = buffer.anchor_before(head);
1336 selection.reversed = false;
1337 }
1338 } else {
1339 log::error!("update_selection dispatched with no pending selection");
1340 return;
1341 }
1342
1343 self.set_scroll_position(scroll_position, cx);
1344 cx.notify();
1345 }
1346
1347 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1348 self.columnar_selection_tail.take();
1349 if self.pending_selection.is_some() {
1350 let selections = self.local_selections::<usize>(cx);
1351 self.update_selections(selections, None, cx);
1352 }
1353 }
1354
1355 fn select_columns(
1356 &mut self,
1357 tail: DisplayPoint,
1358 head: DisplayPoint,
1359 overshoot: u32,
1360 display_map: &DisplaySnapshot,
1361 cx: &mut ViewContext<Self>,
1362 ) {
1363 let start_row = cmp::min(tail.row(), head.row());
1364 let end_row = cmp::max(tail.row(), head.row());
1365 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1366 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1367 let reversed = start_column < tail.column();
1368
1369 let selections = (start_row..=end_row)
1370 .filter_map(|row| {
1371 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1372 let start = display_map
1373 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1374 .to_point(&display_map);
1375 let end = display_map
1376 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1377 .to_point(&display_map);
1378 Some(Selection {
1379 id: post_inc(&mut self.next_selection_id),
1380 start,
1381 end,
1382 reversed,
1383 goal: SelectionGoal::None,
1384 })
1385 } else {
1386 None
1387 }
1388 })
1389 .collect::<Vec<_>>();
1390
1391 self.update_selections(selections, None, cx);
1392 cx.notify();
1393 }
1394
1395 pub fn is_selecting(&self) -> bool {
1396 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1397 }
1398
1399 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1400 if self.hide_context_menu(cx).is_some() {
1401 return;
1402 }
1403
1404 if self.snippet_stack.pop().is_some() {
1405 return;
1406 }
1407
1408 if self.mode != EditorMode::Full {
1409 cx.propagate_action();
1410 return;
1411 }
1412
1413 if self.active_diagnostics.is_some() {
1414 self.dismiss_diagnostics(cx);
1415 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1416 let buffer = self.buffer.read(cx).snapshot(cx);
1417 let selection = Selection {
1418 id: selection.id,
1419 start: selection.start.to_point(&buffer),
1420 end: selection.end.to_point(&buffer),
1421 reversed: selection.reversed,
1422 goal: selection.goal,
1423 };
1424 if self.local_selections::<Point>(cx).is_empty() {
1425 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1426 }
1427 } else {
1428 let buffer = self.buffer.read(cx).snapshot(cx);
1429 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1430 if self.selection_count() == 1 {
1431 if oldest_selection.is_empty() {
1432 cx.propagate_action();
1433 return;
1434 }
1435
1436 oldest_selection.start = oldest_selection.head().clone();
1437 oldest_selection.end = oldest_selection.head().clone();
1438 }
1439 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1440 }
1441 }
1442
1443 #[cfg(any(test, feature = "test-support"))]
1444 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1445 &self,
1446 cx: &mut MutableAppContext,
1447 ) -> Vec<Range<D>> {
1448 self.local_selections::<D>(cx)
1449 .iter()
1450 .map(|s| {
1451 if s.reversed {
1452 s.end.clone()..s.start.clone()
1453 } else {
1454 s.start.clone()..s.end.clone()
1455 }
1456 })
1457 .collect()
1458 }
1459
1460 #[cfg(any(test, feature = "test-support"))]
1461 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1462 let display_map = self
1463 .display_map
1464 .update(cx, |display_map, cx| display_map.snapshot(cx));
1465 self.selections
1466 .iter()
1467 .chain(
1468 self.pending_selection
1469 .as_ref()
1470 .map(|pending| &pending.selection),
1471 )
1472 .map(|s| {
1473 if s.reversed {
1474 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1475 } else {
1476 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1477 }
1478 })
1479 .collect()
1480 }
1481
1482 pub fn select_ranges<I, T>(
1483 &mut self,
1484 ranges: I,
1485 autoscroll: Option<Autoscroll>,
1486 cx: &mut ViewContext<Self>,
1487 ) where
1488 I: IntoIterator<Item = Range<T>>,
1489 T: ToOffset,
1490 {
1491 let buffer = self.buffer.read(cx).snapshot(cx);
1492 let selections = ranges
1493 .into_iter()
1494 .map(|range| {
1495 let mut start = range.start.to_offset(&buffer);
1496 let mut end = range.end.to_offset(&buffer);
1497 let reversed = if start > end {
1498 mem::swap(&mut start, &mut end);
1499 true
1500 } else {
1501 false
1502 };
1503 Selection {
1504 id: post_inc(&mut self.next_selection_id),
1505 start,
1506 end,
1507 reversed,
1508 goal: SelectionGoal::None,
1509 }
1510 })
1511 .collect::<Vec<_>>();
1512 self.update_selections(selections, autoscroll, cx);
1513 }
1514
1515 #[cfg(any(test, feature = "test-support"))]
1516 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1517 where
1518 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1519 {
1520 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1521 let selections = ranges
1522 .into_iter()
1523 .map(|range| {
1524 let mut start = range.start;
1525 let mut end = range.end;
1526 let reversed = if start > end {
1527 mem::swap(&mut start, &mut end);
1528 true
1529 } else {
1530 false
1531 };
1532 Selection {
1533 id: post_inc(&mut self.next_selection_id),
1534 start: start.to_point(&display_map),
1535 end: end.to_point(&display_map),
1536 reversed,
1537 goal: SelectionGoal::None,
1538 }
1539 })
1540 .collect();
1541 self.update_selections(selections, None, cx);
1542 }
1543
1544 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1545 let text = action.0.as_ref();
1546 if !self.skip_autoclose_end(text, cx) {
1547 self.start_transaction(cx);
1548 self.insert(text, cx);
1549 self.autoclose_pairs(cx);
1550 self.end_transaction(cx);
1551 self.trigger_completion_on_input(text, cx);
1552 }
1553 }
1554
1555 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1556 self.start_transaction(cx);
1557 let mut old_selections = SmallVec::<[_; 32]>::new();
1558 {
1559 let selections = self.local_selections::<usize>(cx);
1560 let buffer = self.buffer.read(cx).snapshot(cx);
1561 for selection in selections.iter() {
1562 let start_point = selection.start.to_point(&buffer);
1563 let indent = buffer
1564 .indent_column_for_line(start_point.row)
1565 .min(start_point.column);
1566 let start = selection.start;
1567 let end = selection.end;
1568
1569 let mut insert_extra_newline = false;
1570 if let Some(language) = buffer.language() {
1571 let leading_whitespace_len = buffer
1572 .reversed_chars_at(start)
1573 .take_while(|c| c.is_whitespace() && *c != '\n')
1574 .map(|c| c.len_utf8())
1575 .sum::<usize>();
1576
1577 let trailing_whitespace_len = buffer
1578 .chars_at(end)
1579 .take_while(|c| c.is_whitespace() && *c != '\n')
1580 .map(|c| c.len_utf8())
1581 .sum::<usize>();
1582
1583 insert_extra_newline = language.brackets().iter().any(|pair| {
1584 let pair_start = pair.start.trim_end();
1585 let pair_end = pair.end.trim_start();
1586
1587 pair.newline
1588 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1589 && buffer.contains_str_at(
1590 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1591 pair_start,
1592 )
1593 });
1594 }
1595
1596 old_selections.push((
1597 selection.id,
1598 buffer.anchor_after(end),
1599 start..end,
1600 indent,
1601 insert_extra_newline,
1602 ));
1603 }
1604 }
1605
1606 self.buffer.update(cx, |buffer, cx| {
1607 let mut delta = 0_isize;
1608 let mut pending_edit: Option<PendingEdit> = None;
1609 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1610 if pending_edit.as_ref().map_or(false, |pending| {
1611 pending.indent != *indent
1612 || pending.insert_extra_newline != *insert_extra_newline
1613 }) {
1614 let pending = pending_edit.take().unwrap();
1615 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1616 new_text.push('\n');
1617 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1618 if pending.insert_extra_newline {
1619 new_text = new_text.repeat(2);
1620 }
1621 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1622 delta += pending.delta;
1623 }
1624
1625 let start = (range.start as isize + delta) as usize;
1626 let end = (range.end as isize + delta) as usize;
1627 let mut text_len = *indent as usize + 1;
1628 if *insert_extra_newline {
1629 text_len *= 2;
1630 }
1631
1632 let pending = pending_edit.get_or_insert_with(Default::default);
1633 pending.delta += text_len as isize - (end - start) as isize;
1634 pending.indent = *indent;
1635 pending.insert_extra_newline = *insert_extra_newline;
1636 pending.ranges.push(start..end);
1637 }
1638
1639 let pending = pending_edit.unwrap();
1640 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1641 new_text.push('\n');
1642 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1643 if pending.insert_extra_newline {
1644 new_text = new_text.repeat(2);
1645 }
1646 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1647
1648 let buffer = buffer.read(cx);
1649 self.selections = self
1650 .selections
1651 .iter()
1652 .cloned()
1653 .zip(old_selections)
1654 .map(
1655 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1656 let mut cursor = end_anchor.to_point(&buffer);
1657 if insert_extra_newline {
1658 cursor.row -= 1;
1659 cursor.column = buffer.line_len(cursor.row);
1660 }
1661 let anchor = buffer.anchor_after(cursor);
1662 new_selection.start = anchor.clone();
1663 new_selection.end = anchor;
1664 new_selection
1665 },
1666 )
1667 .collect();
1668 });
1669
1670 self.request_autoscroll(Autoscroll::Fit, cx);
1671 self.end_transaction(cx);
1672
1673 #[derive(Default)]
1674 struct PendingEdit {
1675 indent: u32,
1676 insert_extra_newline: bool,
1677 delta: isize,
1678 ranges: SmallVec<[Range<usize>; 32]>,
1679 }
1680 }
1681
1682 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1683 self.start_transaction(cx);
1684
1685 let old_selections = self.local_selections::<usize>(cx);
1686 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1687 let anchors = {
1688 let snapshot = buffer.read(cx);
1689 old_selections
1690 .iter()
1691 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1692 .collect::<Vec<_>>()
1693 };
1694 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1695 buffer.edit_with_autoindent(edit_ranges, text, cx);
1696 anchors
1697 });
1698
1699 let selections = {
1700 let snapshot = self.buffer.read(cx).read(cx);
1701 selection_anchors
1702 .into_iter()
1703 .map(|(id, goal, position)| {
1704 let position = position.to_offset(&snapshot);
1705 Selection {
1706 id,
1707 start: position,
1708 end: position,
1709 goal,
1710 reversed: false,
1711 }
1712 })
1713 .collect()
1714 };
1715 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1716 self.end_transaction(cx);
1717 }
1718
1719 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1720 if let Some(selection) = self.newest_anchor_selection() {
1721 if self
1722 .buffer
1723 .read(cx)
1724 .is_completion_trigger(selection.head(), text, cx)
1725 {
1726 self.show_completions(&ShowCompletions, cx);
1727 } else {
1728 self.hide_context_menu(cx);
1729 }
1730 }
1731 }
1732
1733 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1734 let selections = self.local_selections::<usize>(cx);
1735 let mut bracket_pair_state = None;
1736 let mut new_selections = None;
1737 self.buffer.update(cx, |buffer, cx| {
1738 let mut snapshot = buffer.snapshot(cx);
1739 let left_biased_selections = selections
1740 .iter()
1741 .map(|selection| Selection {
1742 id: selection.id,
1743 start: snapshot.anchor_before(selection.start),
1744 end: snapshot.anchor_before(selection.end),
1745 reversed: selection.reversed,
1746 goal: selection.goal,
1747 })
1748 .collect::<Vec<_>>();
1749
1750 let autoclose_pair = snapshot.language().and_then(|language| {
1751 let first_selection_start = selections.first().unwrap().start;
1752 let pair = language.brackets().iter().find(|pair| {
1753 snapshot.contains_str_at(
1754 first_selection_start.saturating_sub(pair.start.len()),
1755 &pair.start,
1756 )
1757 });
1758 pair.and_then(|pair| {
1759 let should_autoclose = selections[1..].iter().all(|selection| {
1760 snapshot.contains_str_at(
1761 selection.start.saturating_sub(pair.start.len()),
1762 &pair.start,
1763 )
1764 });
1765
1766 if should_autoclose {
1767 Some(pair.clone())
1768 } else {
1769 None
1770 }
1771 })
1772 });
1773
1774 if let Some(pair) = autoclose_pair {
1775 let selection_ranges = selections
1776 .iter()
1777 .map(|selection| {
1778 let start = selection.start.to_offset(&snapshot);
1779 start..start
1780 })
1781 .collect::<SmallVec<[_; 32]>>();
1782
1783 buffer.edit(selection_ranges, &pair.end, cx);
1784 snapshot = buffer.snapshot(cx);
1785
1786 new_selections = Some(
1787 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1788 .collect::<Vec<_>>(),
1789 );
1790
1791 if pair.end.len() == 1 {
1792 let mut delta = 0;
1793 bracket_pair_state = Some(BracketPairState {
1794 ranges: selections
1795 .iter()
1796 .map(move |selection| {
1797 let offset = selection.start + delta;
1798 delta += 1;
1799 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1800 })
1801 .collect(),
1802 pair,
1803 });
1804 }
1805 }
1806 });
1807
1808 if let Some(new_selections) = new_selections {
1809 self.update_selections(new_selections, None, cx);
1810 }
1811 if let Some(bracket_pair_state) = bracket_pair_state {
1812 self.autoclose_stack.push(bracket_pair_state);
1813 }
1814 }
1815
1816 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1817 let old_selections = self.local_selections::<usize>(cx);
1818 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1819 autoclose_pair
1820 } else {
1821 return false;
1822 };
1823 if text != autoclose_pair.pair.end {
1824 return false;
1825 }
1826
1827 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1828
1829 let buffer = self.buffer.read(cx).snapshot(cx);
1830 if old_selections
1831 .iter()
1832 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1833 .all(|(selection, autoclose_range)| {
1834 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1835 selection.is_empty() && selection.start == autoclose_range_end
1836 })
1837 {
1838 let new_selections = old_selections
1839 .into_iter()
1840 .map(|selection| {
1841 let cursor = selection.start + 1;
1842 Selection {
1843 id: selection.id,
1844 start: cursor,
1845 end: cursor,
1846 reversed: false,
1847 goal: SelectionGoal::None,
1848 }
1849 })
1850 .collect();
1851 self.autoclose_stack.pop();
1852 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1853 true
1854 } else {
1855 false
1856 }
1857 }
1858
1859 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1860 let offset = position.to_offset(buffer);
1861 let (word_range, kind) = buffer.surrounding_word(offset);
1862 if offset > word_range.start && kind == Some(CharKind::Word) {
1863 Some(
1864 buffer
1865 .text_for_range(word_range.start..offset)
1866 .collect::<String>(),
1867 )
1868 } else {
1869 None
1870 }
1871 }
1872
1873 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1874 let position = if let Some(selection) = self.newest_anchor_selection() {
1875 selection.head()
1876 } else {
1877 return;
1878 };
1879
1880 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1881 let completions = self
1882 .buffer
1883 .update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
1884
1885 let id = post_inc(&mut self.next_completion_id);
1886 let task = cx.spawn_weak(|this, mut cx| {
1887 async move {
1888 let completions = completions.await?;
1889
1890 let mut menu = CompletionsMenu {
1891 id,
1892 initial_position: position,
1893 match_candidates: completions
1894 .iter()
1895 .enumerate()
1896 .map(|(id, completion)| {
1897 StringMatchCandidate::new(
1898 id,
1899 completion.label.text[completion.label.filter_range.clone()].into(),
1900 )
1901 })
1902 .collect(),
1903 completions: completions.into(),
1904 matches: Vec::new().into(),
1905 selected_item: 0,
1906 list: Default::default(),
1907 };
1908
1909 menu.filter(query.as_deref(), cx.background()).await;
1910
1911 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1912 this.update(&mut cx, |this, cx| {
1913 match this.context_menu.as_ref() {
1914 None => {}
1915 Some(ContextMenu::Completions(prev_menu)) => {
1916 if prev_menu.id > menu.id {
1917 return;
1918 }
1919 }
1920 _ => return,
1921 }
1922
1923 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1924 if this.focused {
1925 this.show_context_menu(ContextMenu::Completions(menu), cx);
1926 }
1927
1928 cx.notify();
1929 });
1930 }
1931 Ok::<_, anyhow::Error>(())
1932 }
1933 .log_err()
1934 });
1935 self.completion_tasks.push((id, task));
1936 }
1937
1938 pub fn confirm_completion(
1939 &mut self,
1940 ConfirmCompletion(completion_ix): &ConfirmCompletion,
1941 cx: &mut ViewContext<Self>,
1942 ) -> Option<Task<Result<()>>> {
1943 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
1944 menu
1945 } else {
1946 return None;
1947 };
1948
1949 let mat = completions_menu
1950 .matches
1951 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
1952 let completion = completions_menu.completions.get(mat.candidate_id)?;
1953
1954 let snippet;
1955 let text;
1956 if completion.is_snippet() {
1957 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1958 text = snippet.as_ref().unwrap().text.clone();
1959 } else {
1960 snippet = None;
1961 text = completion.new_text.clone();
1962 };
1963 let snapshot = self.buffer.read(cx).snapshot(cx);
1964 let old_range = completion.old_range.to_offset(&snapshot);
1965 let old_text = snapshot
1966 .text_for_range(old_range.clone())
1967 .collect::<String>();
1968
1969 let selections = self.local_selections::<usize>(cx);
1970 let newest_selection = selections.iter().max_by_key(|s| s.id)?;
1971 let lookbehind = newest_selection.start.saturating_sub(old_range.start);
1972 let lookahead = old_range.end.saturating_sub(newest_selection.end);
1973 let mut common_prefix_len = old_text
1974 .bytes()
1975 .zip(text.bytes())
1976 .take_while(|(a, b)| a == b)
1977 .count();
1978
1979 let mut ranges = Vec::new();
1980 for selection in &selections {
1981 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
1982 let start = selection.start.saturating_sub(lookbehind);
1983 let end = selection.end + lookahead;
1984 ranges.push(start + common_prefix_len..end);
1985 } else {
1986 common_prefix_len = 0;
1987 ranges.clear();
1988 ranges.extend(selections.iter().map(|s| {
1989 if s.id == newest_selection.id {
1990 old_range.clone()
1991 } else {
1992 s.start..s.end
1993 }
1994 }));
1995 break;
1996 }
1997 }
1998 let text = &text[common_prefix_len..];
1999
2000 self.start_transaction(cx);
2001 if let Some(mut snippet) = snippet {
2002 snippet.text = text.to_string();
2003 for tabstop in snippet.tabstops.iter_mut().flatten() {
2004 tabstop.start -= common_prefix_len as isize;
2005 tabstop.end -= common_prefix_len as isize;
2006 }
2007
2008 self.insert_snippet(&ranges, snippet, cx).log_err();
2009 } else {
2010 self.buffer.update(cx, |buffer, cx| {
2011 buffer.edit_with_autoindent(ranges, text, cx);
2012 });
2013 }
2014 self.end_transaction(cx);
2015
2016 Some(self.buffer.update(cx, |buffer, cx| {
2017 buffer.apply_additional_edits_for_completion(completion.clone(), cx)
2018 }))
2019 }
2020
2021 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
2022 let position = if let Some(selection) = self.newest_anchor_selection() {
2023 selection.head()
2024 } else {
2025 return;
2026 };
2027
2028 let actions = self
2029 .buffer
2030 .update(cx, |buffer, cx| buffer.code_actions(position.clone(), cx));
2031
2032 cx.spawn(|this, mut cx| async move {
2033 let actions = actions.await?;
2034 if !actions.is_empty() {
2035 this.update(&mut cx, |this, cx| {
2036 if this.focused {
2037 this.show_context_menu(
2038 ContextMenu::CodeActions(CodeActionsMenu {
2039 actions: actions.into(),
2040 selected_item: 0,
2041 list: UniformListState::default(),
2042 }),
2043 cx,
2044 );
2045 }
2046 });
2047 }
2048 Ok::<_, anyhow::Error>(())
2049 })
2050 .detach_and_log_err(cx);
2051 }
2052
2053 fn confirm_code_action(
2054 workspace: &mut Workspace,
2055 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2056 cx: &mut ViewContext<Workspace>,
2057 ) -> Option<Task<Result<()>>> {
2058 let active_item = workspace.active_item(cx)?;
2059 let editor = active_item.act_as::<Self>(cx)?;
2060 let (buffer, action) = editor.update(cx, |editor, cx| {
2061 let actions_menu =
2062 if let ContextMenu::CodeActions(menu) = editor.hide_context_menu(cx)? {
2063 menu
2064 } else {
2065 return None;
2066 };
2067 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2068 let action = actions_menu.actions.get(action_ix)?.clone();
2069 let (buffer, position) = editor
2070 .buffer
2071 .read(cx)
2072 .text_anchor_for_position(action.position, cx);
2073 let action = CodeAction {
2074 position,
2075 lsp_action: action.lsp_action,
2076 };
2077 Some((buffer, action))
2078 })?;
2079
2080 Some(workspace.project().update(cx, |project, cx| {
2081 project.apply_code_action(buffer, action, cx)
2082 }))
2083 }
2084
2085 pub fn showing_context_menu(&self) -> bool {
2086 self.context_menu
2087 .as_ref()
2088 .map_or(false, |menu| menu.visible())
2089 }
2090
2091 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2092 self.context_menu
2093 .as_ref()
2094 .map(|menu| menu.render(self.build_settings.clone(), cx))
2095 }
2096
2097 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2098 if !matches!(menu, ContextMenu::Completions(_)) {
2099 self.completion_tasks.clear();
2100 }
2101 self.context_menu = Some(menu);
2102 cx.notify()
2103 }
2104
2105 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2106 cx.notify();
2107 self.completion_tasks.clear();
2108 self.context_menu.take()
2109 }
2110
2111 pub fn insert_snippet(
2112 &mut self,
2113 insertion_ranges: &[Range<usize>],
2114 snippet: Snippet,
2115 cx: &mut ViewContext<Self>,
2116 ) -> Result<()> {
2117 let tabstops = self.buffer.update(cx, |buffer, cx| {
2118 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2119
2120 let snapshot = &*buffer.read(cx);
2121 let snippet = &snippet;
2122 snippet
2123 .tabstops
2124 .iter()
2125 .map(|tabstop| {
2126 let mut tabstop_ranges = tabstop
2127 .iter()
2128 .flat_map(|tabstop_range| {
2129 let mut delta = 0 as isize;
2130 insertion_ranges.iter().map(move |insertion_range| {
2131 let insertion_start = insertion_range.start as isize + delta;
2132 delta +=
2133 snippet.text.len() as isize - insertion_range.len() as isize;
2134
2135 let start = snapshot.anchor_before(
2136 (insertion_start + tabstop_range.start) as usize,
2137 );
2138 let end = snapshot
2139 .anchor_after((insertion_start + tabstop_range.end) as usize);
2140 start..end
2141 })
2142 })
2143 .collect::<Vec<_>>();
2144 tabstop_ranges
2145 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2146 tabstop_ranges
2147 })
2148 .collect::<Vec<_>>()
2149 });
2150
2151 if let Some(tabstop) = tabstops.first() {
2152 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2153 self.snippet_stack.push(SnippetState {
2154 active_index: 0,
2155 ranges: tabstops,
2156 });
2157 }
2158
2159 Ok(())
2160 }
2161
2162 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2163 self.move_to_snippet_tabstop(Bias::Right, cx)
2164 }
2165
2166 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2167 self.move_to_snippet_tabstop(Bias::Left, cx);
2168 }
2169
2170 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2171 let buffer = self.buffer.read(cx).snapshot(cx);
2172
2173 if let Some(snippet) = self.snippet_stack.last_mut() {
2174 match bias {
2175 Bias::Left => {
2176 if snippet.active_index > 0 {
2177 snippet.active_index -= 1;
2178 } else {
2179 return false;
2180 }
2181 }
2182 Bias::Right => {
2183 if snippet.active_index + 1 < snippet.ranges.len() {
2184 snippet.active_index += 1;
2185 } else {
2186 return false;
2187 }
2188 }
2189 }
2190 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2191 let new_selections = current_ranges
2192 .iter()
2193 .map(|new_range| {
2194 let new_range = new_range.to_offset(&buffer);
2195 Selection {
2196 id: post_inc(&mut self.next_selection_id),
2197 start: new_range.start,
2198 end: new_range.end,
2199 reversed: false,
2200 goal: SelectionGoal::None,
2201 }
2202 })
2203 .collect();
2204
2205 // Remove the snippet state when moving to the last tabstop.
2206 if snippet.active_index + 1 == snippet.ranges.len() {
2207 self.snippet_stack.pop();
2208 }
2209
2210 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2211 return true;
2212 }
2213 self.snippet_stack.pop();
2214 }
2215
2216 false
2217 }
2218
2219 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2220 self.start_transaction(cx);
2221 self.select_all(&SelectAll, cx);
2222 self.insert("", cx);
2223 self.end_transaction(cx);
2224 }
2225
2226 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2227 self.start_transaction(cx);
2228 let mut selections = self.local_selections::<Point>(cx);
2229 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2230 for selection in &mut selections {
2231 if selection.is_empty() {
2232 let head = selection.head().to_display_point(&display_map);
2233 let cursor = movement::left(&display_map, head)
2234 .unwrap()
2235 .to_point(&display_map);
2236 selection.set_head(cursor);
2237 selection.goal = SelectionGoal::None;
2238 }
2239 }
2240 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2241 self.insert("", cx);
2242 self.end_transaction(cx);
2243 }
2244
2245 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2246 self.start_transaction(cx);
2247 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2248 let mut selections = self.local_selections::<Point>(cx);
2249 for selection in &mut selections {
2250 if selection.is_empty() {
2251 let head = selection.head().to_display_point(&display_map);
2252 let cursor = movement::right(&display_map, head)
2253 .unwrap()
2254 .to_point(&display_map);
2255 selection.set_head(cursor);
2256 selection.goal = SelectionGoal::None;
2257 }
2258 }
2259 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2260 self.insert(&"", cx);
2261 self.end_transaction(cx);
2262 }
2263
2264 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2265 if self.move_to_next_snippet_tabstop(cx) {
2266 return;
2267 }
2268
2269 self.start_transaction(cx);
2270 let tab_size = (self.build_settings)(cx).tab_size;
2271 let mut selections = self.local_selections::<Point>(cx);
2272 let mut last_indent = None;
2273 self.buffer.update(cx, |buffer, cx| {
2274 for selection in &mut selections {
2275 if selection.is_empty() {
2276 let char_column = buffer
2277 .read(cx)
2278 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2279 .flat_map(str::chars)
2280 .count();
2281 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2282 buffer.edit(
2283 [selection.start..selection.start],
2284 " ".repeat(chars_to_next_tab_stop),
2285 cx,
2286 );
2287 selection.start.column += chars_to_next_tab_stop as u32;
2288 selection.end = selection.start;
2289 } else {
2290 let mut start_row = selection.start.row;
2291 let mut end_row = selection.end.row + 1;
2292
2293 // If a selection ends at the beginning of a line, don't indent
2294 // that last line.
2295 if selection.end.column == 0 {
2296 end_row -= 1;
2297 }
2298
2299 // Avoid re-indenting a row that has already been indented by a
2300 // previous selection, but still update this selection's column
2301 // to reflect that indentation.
2302 if let Some((last_indent_row, last_indent_len)) = last_indent {
2303 if last_indent_row == selection.start.row {
2304 selection.start.column += last_indent_len;
2305 start_row += 1;
2306 }
2307 if last_indent_row == selection.end.row {
2308 selection.end.column += last_indent_len;
2309 }
2310 }
2311
2312 for row in start_row..end_row {
2313 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2314 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2315 let row_start = Point::new(row, 0);
2316 buffer.edit(
2317 [row_start..row_start],
2318 " ".repeat(columns_to_next_tab_stop),
2319 cx,
2320 );
2321
2322 // Update this selection's endpoints to reflect the indentation.
2323 if row == selection.start.row {
2324 selection.start.column += columns_to_next_tab_stop as u32;
2325 }
2326 if row == selection.end.row {
2327 selection.end.column += columns_to_next_tab_stop as u32;
2328 }
2329
2330 last_indent = Some((row, columns_to_next_tab_stop as u32));
2331 }
2332 }
2333 }
2334 });
2335
2336 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2337 self.end_transaction(cx);
2338 }
2339
2340 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2341 if !self.snippet_stack.is_empty() {
2342 self.move_to_prev_snippet_tabstop(cx);
2343 return;
2344 }
2345
2346 self.start_transaction(cx);
2347 let tab_size = (self.build_settings)(cx).tab_size;
2348 let selections = self.local_selections::<Point>(cx);
2349 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2350 let mut deletion_ranges = Vec::new();
2351 let mut last_outdent = None;
2352 {
2353 let buffer = self.buffer.read(cx).read(cx);
2354 for selection in &selections {
2355 let mut rows = selection.spanned_rows(false, &display_map);
2356
2357 // Avoid re-outdenting a row that has already been outdented by a
2358 // previous selection.
2359 if let Some(last_row) = last_outdent {
2360 if last_row == rows.start {
2361 rows.start += 1;
2362 }
2363 }
2364
2365 for row in rows {
2366 let column = buffer.indent_column_for_line(row) as usize;
2367 if column > 0 {
2368 let mut deletion_len = (column % tab_size) as u32;
2369 if deletion_len == 0 {
2370 deletion_len = tab_size as u32;
2371 }
2372 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2373 last_outdent = Some(row);
2374 }
2375 }
2376 }
2377 }
2378 self.buffer.update(cx, |buffer, cx| {
2379 buffer.edit(deletion_ranges, "", cx);
2380 });
2381
2382 self.update_selections(
2383 self.local_selections::<usize>(cx),
2384 Some(Autoscroll::Fit),
2385 cx,
2386 );
2387 self.end_transaction(cx);
2388 }
2389
2390 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2391 self.start_transaction(cx);
2392
2393 let selections = self.local_selections::<Point>(cx);
2394 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2395 let buffer = self.buffer.read(cx).snapshot(cx);
2396
2397 let mut new_cursors = Vec::new();
2398 let mut edit_ranges = Vec::new();
2399 let mut selections = selections.iter().peekable();
2400 while let Some(selection) = selections.next() {
2401 let mut rows = selection.spanned_rows(false, &display_map);
2402 let goal_display_column = selection.head().to_display_point(&display_map).column();
2403
2404 // Accumulate contiguous regions of rows that we want to delete.
2405 while let Some(next_selection) = selections.peek() {
2406 let next_rows = next_selection.spanned_rows(false, &display_map);
2407 if next_rows.start <= rows.end {
2408 rows.end = next_rows.end;
2409 selections.next().unwrap();
2410 } else {
2411 break;
2412 }
2413 }
2414
2415 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2416 let edit_end;
2417 let cursor_buffer_row;
2418 if buffer.max_point().row >= rows.end {
2419 // If there's a line after the range, delete the \n from the end of the row range
2420 // and position the cursor on the next line.
2421 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2422 cursor_buffer_row = rows.end;
2423 } else {
2424 // If there isn't a line after the range, delete the \n from the line before the
2425 // start of the row range and position the cursor there.
2426 edit_start = edit_start.saturating_sub(1);
2427 edit_end = buffer.len();
2428 cursor_buffer_row = rows.start.saturating_sub(1);
2429 }
2430
2431 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2432 *cursor.column_mut() =
2433 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2434
2435 new_cursors.push((
2436 selection.id,
2437 buffer.anchor_after(cursor.to_point(&display_map)),
2438 ));
2439 edit_ranges.push(edit_start..edit_end);
2440 }
2441
2442 let buffer = self.buffer.update(cx, |buffer, cx| {
2443 buffer.edit(edit_ranges, "", cx);
2444 buffer.snapshot(cx)
2445 });
2446 let new_selections = new_cursors
2447 .into_iter()
2448 .map(|(id, cursor)| {
2449 let cursor = cursor.to_point(&buffer);
2450 Selection {
2451 id,
2452 start: cursor,
2453 end: cursor,
2454 reversed: false,
2455 goal: SelectionGoal::None,
2456 }
2457 })
2458 .collect();
2459 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2460 self.end_transaction(cx);
2461 }
2462
2463 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2464 self.start_transaction(cx);
2465
2466 let selections = self.local_selections::<Point>(cx);
2467 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2468 let buffer = &display_map.buffer_snapshot;
2469
2470 let mut edits = Vec::new();
2471 let mut selections_iter = selections.iter().peekable();
2472 while let Some(selection) = selections_iter.next() {
2473 // Avoid duplicating the same lines twice.
2474 let mut rows = selection.spanned_rows(false, &display_map);
2475
2476 while let Some(next_selection) = selections_iter.peek() {
2477 let next_rows = next_selection.spanned_rows(false, &display_map);
2478 if next_rows.start <= rows.end - 1 {
2479 rows.end = next_rows.end;
2480 selections_iter.next().unwrap();
2481 } else {
2482 break;
2483 }
2484 }
2485
2486 // Copy the text from the selected row region and splice it at the start of the region.
2487 let start = Point::new(rows.start, 0);
2488 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2489 let text = buffer
2490 .text_for_range(start..end)
2491 .chain(Some("\n"))
2492 .collect::<String>();
2493 edits.push((start, text, rows.len() as u32));
2494 }
2495
2496 self.buffer.update(cx, |buffer, cx| {
2497 for (point, text, _) in edits.into_iter().rev() {
2498 buffer.edit(Some(point..point), text, cx);
2499 }
2500 });
2501
2502 self.request_autoscroll(Autoscroll::Fit, cx);
2503 self.end_transaction(cx);
2504 }
2505
2506 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2507 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2508 let buffer = self.buffer.read(cx).snapshot(cx);
2509
2510 let mut edits = Vec::new();
2511 let mut unfold_ranges = Vec::new();
2512 let mut refold_ranges = Vec::new();
2513
2514 let selections = self.local_selections::<Point>(cx);
2515 let mut selections = selections.iter().peekable();
2516 let mut contiguous_row_selections = Vec::new();
2517 let mut new_selections = Vec::new();
2518
2519 while let Some(selection) = selections.next() {
2520 // Find all the selections that span a contiguous row range
2521 contiguous_row_selections.push(selection.clone());
2522 let start_row = selection.start.row;
2523 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2524 display_map.next_line_boundary(selection.end).0.row + 1
2525 } else {
2526 selection.end.row
2527 };
2528
2529 while let Some(next_selection) = selections.peek() {
2530 if next_selection.start.row <= end_row {
2531 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2532 display_map.next_line_boundary(next_selection.end).0.row + 1
2533 } else {
2534 next_selection.end.row
2535 };
2536 contiguous_row_selections.push(selections.next().unwrap().clone());
2537 } else {
2538 break;
2539 }
2540 }
2541
2542 // Move the text spanned by the row range to be before the line preceding the row range
2543 if start_row > 0 {
2544 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2545 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2546 let insertion_point = display_map
2547 .prev_line_boundary(Point::new(start_row - 1, 0))
2548 .0;
2549
2550 // Don't move lines across excerpts
2551 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2552 let text = buffer
2553 .text_for_range(range_to_move.clone())
2554 .flat_map(|s| s.chars())
2555 .skip(1)
2556 .chain(['\n'])
2557 .collect::<String>();
2558
2559 edits.push((
2560 buffer.anchor_after(range_to_move.start)
2561 ..buffer.anchor_before(range_to_move.end),
2562 String::new(),
2563 ));
2564 let insertion_anchor = buffer.anchor_after(insertion_point);
2565 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2566
2567 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2568
2569 // Move selections up
2570 new_selections.extend(contiguous_row_selections.drain(..).map(
2571 |mut selection| {
2572 selection.start.row -= row_delta;
2573 selection.end.row -= row_delta;
2574 selection
2575 },
2576 ));
2577
2578 // Move folds up
2579 unfold_ranges.push(range_to_move.clone());
2580 for fold in display_map.folds_in_range(
2581 buffer.anchor_before(range_to_move.start)
2582 ..buffer.anchor_after(range_to_move.end),
2583 ) {
2584 let mut start = fold.start.to_point(&buffer);
2585 let mut end = fold.end.to_point(&buffer);
2586 start.row -= row_delta;
2587 end.row -= row_delta;
2588 refold_ranges.push(start..end);
2589 }
2590 }
2591 }
2592
2593 // If we didn't move line(s), preserve the existing selections
2594 new_selections.extend(contiguous_row_selections.drain(..));
2595 }
2596
2597 self.start_transaction(cx);
2598 self.unfold_ranges(unfold_ranges, cx);
2599 self.buffer.update(cx, |buffer, cx| {
2600 for (range, text) in edits {
2601 buffer.edit([range], text, cx);
2602 }
2603 });
2604 self.fold_ranges(refold_ranges, cx);
2605 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2606 self.end_transaction(cx);
2607 }
2608
2609 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2610 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2611 let buffer = self.buffer.read(cx).snapshot(cx);
2612
2613 let mut edits = Vec::new();
2614 let mut unfold_ranges = Vec::new();
2615 let mut refold_ranges = Vec::new();
2616
2617 let selections = self.local_selections::<Point>(cx);
2618 let mut selections = selections.iter().peekable();
2619 let mut contiguous_row_selections = Vec::new();
2620 let mut new_selections = Vec::new();
2621
2622 while let Some(selection) = selections.next() {
2623 // Find all the selections that span a contiguous row range
2624 contiguous_row_selections.push(selection.clone());
2625 let start_row = selection.start.row;
2626 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2627 display_map.next_line_boundary(selection.end).0.row + 1
2628 } else {
2629 selection.end.row
2630 };
2631
2632 while let Some(next_selection) = selections.peek() {
2633 if next_selection.start.row <= end_row {
2634 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2635 display_map.next_line_boundary(next_selection.end).0.row + 1
2636 } else {
2637 next_selection.end.row
2638 };
2639 contiguous_row_selections.push(selections.next().unwrap().clone());
2640 } else {
2641 break;
2642 }
2643 }
2644
2645 // Move the text spanned by the row range to be after the last line of the row range
2646 if end_row <= buffer.max_point().row {
2647 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2648 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2649
2650 // Don't move lines across excerpt boundaries
2651 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2652 let mut text = String::from("\n");
2653 text.extend(buffer.text_for_range(range_to_move.clone()));
2654 text.pop(); // Drop trailing newline
2655 edits.push((
2656 buffer.anchor_after(range_to_move.start)
2657 ..buffer.anchor_before(range_to_move.end),
2658 String::new(),
2659 ));
2660 let insertion_anchor = buffer.anchor_after(insertion_point);
2661 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2662
2663 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2664
2665 // Move selections down
2666 new_selections.extend(contiguous_row_selections.drain(..).map(
2667 |mut selection| {
2668 selection.start.row += row_delta;
2669 selection.end.row += row_delta;
2670 selection
2671 },
2672 ));
2673
2674 // Move folds down
2675 unfold_ranges.push(range_to_move.clone());
2676 for fold in display_map.folds_in_range(
2677 buffer.anchor_before(range_to_move.start)
2678 ..buffer.anchor_after(range_to_move.end),
2679 ) {
2680 let mut start = fold.start.to_point(&buffer);
2681 let mut end = fold.end.to_point(&buffer);
2682 start.row += row_delta;
2683 end.row += row_delta;
2684 refold_ranges.push(start..end);
2685 }
2686 }
2687 }
2688
2689 // If we didn't move line(s), preserve the existing selections
2690 new_selections.extend(contiguous_row_selections.drain(..));
2691 }
2692
2693 self.start_transaction(cx);
2694 self.unfold_ranges(unfold_ranges, cx);
2695 self.buffer.update(cx, |buffer, cx| {
2696 for (range, text) in edits {
2697 buffer.edit([range], text, cx);
2698 }
2699 });
2700 self.fold_ranges(refold_ranges, cx);
2701 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2702 self.end_transaction(cx);
2703 }
2704
2705 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2706 self.start_transaction(cx);
2707 let mut text = String::new();
2708 let mut selections = self.local_selections::<Point>(cx);
2709 let mut clipboard_selections = Vec::with_capacity(selections.len());
2710 {
2711 let buffer = self.buffer.read(cx).read(cx);
2712 let max_point = buffer.max_point();
2713 for selection in &mut selections {
2714 let is_entire_line = selection.is_empty();
2715 if is_entire_line {
2716 selection.start = Point::new(selection.start.row, 0);
2717 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2718 selection.goal = SelectionGoal::None;
2719 }
2720 let mut len = 0;
2721 for chunk in buffer.text_for_range(selection.start..selection.end) {
2722 text.push_str(chunk);
2723 len += chunk.len();
2724 }
2725 clipboard_selections.push(ClipboardSelection {
2726 len,
2727 is_entire_line,
2728 });
2729 }
2730 }
2731 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2732 self.insert("", cx);
2733 self.end_transaction(cx);
2734
2735 cx.as_mut()
2736 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2737 }
2738
2739 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2740 let selections = self.local_selections::<Point>(cx);
2741 let mut text = String::new();
2742 let mut clipboard_selections = Vec::with_capacity(selections.len());
2743 {
2744 let buffer = self.buffer.read(cx).read(cx);
2745 let max_point = buffer.max_point();
2746 for selection in selections.iter() {
2747 let mut start = selection.start;
2748 let mut end = selection.end;
2749 let is_entire_line = selection.is_empty();
2750 if is_entire_line {
2751 start = Point::new(start.row, 0);
2752 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2753 }
2754 let mut len = 0;
2755 for chunk in buffer.text_for_range(start..end) {
2756 text.push_str(chunk);
2757 len += chunk.len();
2758 }
2759 clipboard_selections.push(ClipboardSelection {
2760 len,
2761 is_entire_line,
2762 });
2763 }
2764 }
2765
2766 cx.as_mut()
2767 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2768 }
2769
2770 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2771 if let Some(item) = cx.as_mut().read_from_clipboard() {
2772 let clipboard_text = item.text();
2773 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2774 let mut selections = self.local_selections::<usize>(cx);
2775 let all_selections_were_entire_line =
2776 clipboard_selections.iter().all(|s| s.is_entire_line);
2777 if clipboard_selections.len() != selections.len() {
2778 clipboard_selections.clear();
2779 }
2780
2781 let mut delta = 0_isize;
2782 let mut start_offset = 0;
2783 for (i, selection) in selections.iter_mut().enumerate() {
2784 let to_insert;
2785 let entire_line;
2786 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2787 let end_offset = start_offset + clipboard_selection.len;
2788 to_insert = &clipboard_text[start_offset..end_offset];
2789 entire_line = clipboard_selection.is_entire_line;
2790 start_offset = end_offset
2791 } else {
2792 to_insert = clipboard_text.as_str();
2793 entire_line = all_selections_were_entire_line;
2794 }
2795
2796 selection.start = (selection.start as isize + delta) as usize;
2797 selection.end = (selection.end as isize + delta) as usize;
2798
2799 self.buffer.update(cx, |buffer, cx| {
2800 // If the corresponding selection was empty when this slice of the
2801 // clipboard text was written, then the entire line containing the
2802 // selection was copied. If this selection is also currently empty,
2803 // then paste the line before the current line of the buffer.
2804 let range = if selection.is_empty() && entire_line {
2805 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2806 let line_start = selection.start - column;
2807 line_start..line_start
2808 } else {
2809 selection.start..selection.end
2810 };
2811
2812 delta += to_insert.len() as isize - range.len() as isize;
2813 buffer.edit([range], to_insert, cx);
2814 selection.start += to_insert.len();
2815 selection.end = selection.start;
2816 });
2817 }
2818 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2819 } else {
2820 self.insert(clipboard_text, cx);
2821 }
2822 }
2823 }
2824
2825 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2826 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2827 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2828 self.set_selections(selections, cx);
2829 }
2830 self.request_autoscroll(Autoscroll::Fit, cx);
2831 }
2832 }
2833
2834 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2835 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2836 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2837 self.set_selections(selections, cx);
2838 }
2839 self.request_autoscroll(Autoscroll::Fit, cx);
2840 }
2841 }
2842
2843 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2844 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2845 let mut selections = self.local_selections::<Point>(cx);
2846 for selection in &mut selections {
2847 let start = selection.start.to_display_point(&display_map);
2848 let end = selection.end.to_display_point(&display_map);
2849
2850 if start != end {
2851 selection.end = selection.start.clone();
2852 } else {
2853 let cursor = movement::left(&display_map, start)
2854 .unwrap()
2855 .to_point(&display_map);
2856 selection.start = cursor.clone();
2857 selection.end = cursor;
2858 }
2859 selection.reversed = false;
2860 selection.goal = SelectionGoal::None;
2861 }
2862 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2863 }
2864
2865 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2866 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2867 let mut selections = self.local_selections::<Point>(cx);
2868 for selection in &mut selections {
2869 let head = selection.head().to_display_point(&display_map);
2870 let cursor = movement::left(&display_map, head)
2871 .unwrap()
2872 .to_point(&display_map);
2873 selection.set_head(cursor);
2874 selection.goal = SelectionGoal::None;
2875 }
2876 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2877 }
2878
2879 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2880 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2881 let mut selections = self.local_selections::<Point>(cx);
2882 for selection in &mut selections {
2883 let start = selection.start.to_display_point(&display_map);
2884 let end = selection.end.to_display_point(&display_map);
2885
2886 if start != end {
2887 selection.start = selection.end.clone();
2888 } else {
2889 let cursor = movement::right(&display_map, end)
2890 .unwrap()
2891 .to_point(&display_map);
2892 selection.start = cursor;
2893 selection.end = cursor;
2894 }
2895 selection.reversed = false;
2896 selection.goal = SelectionGoal::None;
2897 }
2898 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2899 }
2900
2901 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2902 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2903 let mut selections = self.local_selections::<Point>(cx);
2904 for selection in &mut selections {
2905 let head = selection.head().to_display_point(&display_map);
2906 let cursor = movement::right(&display_map, head)
2907 .unwrap()
2908 .to_point(&display_map);
2909 selection.set_head(cursor);
2910 selection.goal = SelectionGoal::None;
2911 }
2912 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2913 }
2914
2915 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2916 if let Some(context_menu) = self.context_menu.as_mut() {
2917 if context_menu.select_prev(cx) {
2918 return;
2919 }
2920 }
2921
2922 if matches!(self.mode, EditorMode::SingleLine) {
2923 cx.propagate_action();
2924 return;
2925 }
2926
2927 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2928 let mut selections = self.local_selections::<Point>(cx);
2929 for selection in &mut selections {
2930 let start = selection.start.to_display_point(&display_map);
2931 let end = selection.end.to_display_point(&display_map);
2932 if start != end {
2933 selection.goal = SelectionGoal::None;
2934 }
2935
2936 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2937 let cursor = start.to_point(&display_map);
2938 selection.start = cursor;
2939 selection.end = cursor;
2940 selection.goal = goal;
2941 selection.reversed = false;
2942 }
2943 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2944 }
2945
2946 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2947 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2948 let mut selections = self.local_selections::<Point>(cx);
2949 for selection in &mut selections {
2950 let head = selection.head().to_display_point(&display_map);
2951 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2952 let cursor = head.to_point(&display_map);
2953 selection.set_head(cursor);
2954 selection.goal = goal;
2955 }
2956 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2957 }
2958
2959 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2960 if let Some(context_menu) = self.context_menu.as_mut() {
2961 if context_menu.select_next(cx) {
2962 return;
2963 }
2964 }
2965
2966 if matches!(self.mode, EditorMode::SingleLine) {
2967 cx.propagate_action();
2968 return;
2969 }
2970
2971 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2972 let mut selections = self.local_selections::<Point>(cx);
2973 for selection in &mut selections {
2974 let start = selection.start.to_display_point(&display_map);
2975 let end = selection.end.to_display_point(&display_map);
2976 if start != end {
2977 selection.goal = SelectionGoal::None;
2978 }
2979
2980 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2981 let cursor = start.to_point(&display_map);
2982 selection.start = cursor;
2983 selection.end = cursor;
2984 selection.goal = goal;
2985 selection.reversed = false;
2986 }
2987 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2988 }
2989
2990 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
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 (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2996 let cursor = head.to_point(&display_map);
2997 selection.set_head(cursor);
2998 selection.goal = goal;
2999 }
3000 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3001 }
3002
3003 pub fn move_to_previous_word_boundary(
3004 &mut self,
3005 _: &MoveToPreviousWordBoundary,
3006 cx: &mut ViewContext<Self>,
3007 ) {
3008 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3009 let mut selections = self.local_selections::<Point>(cx);
3010 for selection in &mut selections {
3011 let head = selection.head().to_display_point(&display_map);
3012 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3013 selection.start = cursor.clone();
3014 selection.end = cursor;
3015 selection.reversed = false;
3016 selection.goal = SelectionGoal::None;
3017 }
3018 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3019 }
3020
3021 pub fn select_to_previous_word_boundary(
3022 &mut self,
3023 _: &SelectToPreviousWordBoundary,
3024 cx: &mut ViewContext<Self>,
3025 ) {
3026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3027 let mut selections = self.local_selections::<Point>(cx);
3028 for selection in &mut selections {
3029 let head = selection.head().to_display_point(&display_map);
3030 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3031 selection.set_head(cursor);
3032 selection.goal = SelectionGoal::None;
3033 }
3034 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3035 }
3036
3037 pub fn delete_to_previous_word_boundary(
3038 &mut self,
3039 _: &DeleteToPreviousWordBoundary,
3040 cx: &mut ViewContext<Self>,
3041 ) {
3042 self.start_transaction(cx);
3043 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3044 let mut selections = self.local_selections::<Point>(cx);
3045 for selection in &mut selections {
3046 if selection.is_empty() {
3047 let head = selection.head().to_display_point(&display_map);
3048 let cursor =
3049 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3050 selection.set_head(cursor);
3051 selection.goal = SelectionGoal::None;
3052 }
3053 }
3054 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3055 self.insert("", cx);
3056 self.end_transaction(cx);
3057 }
3058
3059 pub fn move_to_next_word_boundary(
3060 &mut self,
3061 _: &MoveToNextWordBoundary,
3062 cx: &mut ViewContext<Self>,
3063 ) {
3064 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3065 let mut selections = self.local_selections::<Point>(cx);
3066 for selection in &mut selections {
3067 let head = selection.head().to_display_point(&display_map);
3068 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3069 selection.start = cursor;
3070 selection.end = cursor;
3071 selection.reversed = false;
3072 selection.goal = SelectionGoal::None;
3073 }
3074 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3075 }
3076
3077 pub fn select_to_next_word_boundary(
3078 &mut self,
3079 _: &SelectToNextWordBoundary,
3080 cx: &mut ViewContext<Self>,
3081 ) {
3082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3083 let mut selections = self.local_selections::<Point>(cx);
3084 for selection in &mut selections {
3085 let head = selection.head().to_display_point(&display_map);
3086 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3087 selection.set_head(cursor);
3088 selection.goal = SelectionGoal::None;
3089 }
3090 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3091 }
3092
3093 pub fn delete_to_next_word_boundary(
3094 &mut self,
3095 _: &DeleteToNextWordBoundary,
3096 cx: &mut ViewContext<Self>,
3097 ) {
3098 self.start_transaction(cx);
3099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3100 let mut selections = self.local_selections::<Point>(cx);
3101 for selection in &mut selections {
3102 if selection.is_empty() {
3103 let head = selection.head().to_display_point(&display_map);
3104 let cursor =
3105 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3106 selection.set_head(cursor);
3107 selection.goal = SelectionGoal::None;
3108 }
3109 }
3110 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3111 self.insert("", cx);
3112 self.end_transaction(cx);
3113 }
3114
3115 pub fn move_to_beginning_of_line(
3116 &mut self,
3117 _: &MoveToBeginningOfLine,
3118 cx: &mut ViewContext<Self>,
3119 ) {
3120 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3121 let mut selections = self.local_selections::<Point>(cx);
3122 for selection in &mut selections {
3123 let head = selection.head().to_display_point(&display_map);
3124 let new_head = movement::line_beginning(&display_map, head, true);
3125 let cursor = new_head.to_point(&display_map);
3126 selection.start = cursor;
3127 selection.end = cursor;
3128 selection.reversed = false;
3129 selection.goal = SelectionGoal::None;
3130 }
3131 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3132 }
3133
3134 pub fn select_to_beginning_of_line(
3135 &mut self,
3136 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3137 cx: &mut ViewContext<Self>,
3138 ) {
3139 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3140 let mut selections = self.local_selections::<Point>(cx);
3141 for selection in &mut selections {
3142 let head = selection.head().to_display_point(&display_map);
3143 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3144 selection.set_head(new_head.to_point(&display_map));
3145 selection.goal = SelectionGoal::None;
3146 }
3147 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3148 }
3149
3150 pub fn delete_to_beginning_of_line(
3151 &mut self,
3152 _: &DeleteToBeginningOfLine,
3153 cx: &mut ViewContext<Self>,
3154 ) {
3155 self.start_transaction(cx);
3156 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3157 self.backspace(&Backspace, cx);
3158 self.end_transaction(cx);
3159 }
3160
3161 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3162 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3163 let mut selections = self.local_selections::<Point>(cx);
3164 {
3165 for selection in &mut selections {
3166 let head = selection.head().to_display_point(&display_map);
3167 let new_head = movement::line_end(&display_map, head, true);
3168 let anchor = new_head.to_point(&display_map);
3169 selection.start = anchor.clone();
3170 selection.end = anchor;
3171 selection.reversed = false;
3172 selection.goal = SelectionGoal::None;
3173 }
3174 }
3175 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3176 }
3177
3178 pub fn select_to_end_of_line(
3179 &mut self,
3180 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3181 cx: &mut ViewContext<Self>,
3182 ) {
3183 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3184 let mut selections = self.local_selections::<Point>(cx);
3185 for selection in &mut selections {
3186 let head = selection.head().to_display_point(&display_map);
3187 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3188 selection.set_head(new_head.to_point(&display_map));
3189 selection.goal = SelectionGoal::None;
3190 }
3191 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3192 }
3193
3194 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3195 self.start_transaction(cx);
3196 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3197 self.delete(&Delete, cx);
3198 self.end_transaction(cx);
3199 }
3200
3201 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3202 self.start_transaction(cx);
3203 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3204 self.cut(&Cut, cx);
3205 self.end_transaction(cx);
3206 }
3207
3208 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3209 if matches!(self.mode, EditorMode::SingleLine) {
3210 cx.propagate_action();
3211 return;
3212 }
3213
3214 let selection = Selection {
3215 id: post_inc(&mut self.next_selection_id),
3216 start: 0,
3217 end: 0,
3218 reversed: false,
3219 goal: SelectionGoal::None,
3220 };
3221 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3222 }
3223
3224 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3225 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3226 selection.set_head(Point::zero());
3227 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3228 }
3229
3230 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3231 if matches!(self.mode, EditorMode::SingleLine) {
3232 cx.propagate_action();
3233 return;
3234 }
3235
3236 let cursor = self.buffer.read(cx).read(cx).len();
3237 let selection = Selection {
3238 id: post_inc(&mut self.next_selection_id),
3239 start: cursor,
3240 end: cursor,
3241 reversed: false,
3242 goal: SelectionGoal::None,
3243 };
3244 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3245 }
3246
3247 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3248 self.nav_history = nav_history;
3249 }
3250
3251 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3252 self.nav_history.as_ref()
3253 }
3254
3255 fn push_to_nav_history(
3256 &self,
3257 position: Anchor,
3258 new_position: Option<Point>,
3259 cx: &mut ViewContext<Self>,
3260 ) {
3261 if let Some(nav_history) = &self.nav_history {
3262 let buffer = self.buffer.read(cx).read(cx);
3263 let offset = position.to_offset(&buffer);
3264 let point = position.to_point(&buffer);
3265 drop(buffer);
3266
3267 if let Some(new_position) = new_position {
3268 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3269 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3270 return;
3271 }
3272 }
3273
3274 nav_history.push(Some(NavigationData {
3275 anchor: position,
3276 offset,
3277 }));
3278 }
3279 }
3280
3281 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3282 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3283 selection.set_head(self.buffer.read(cx).read(cx).len());
3284 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3285 }
3286
3287 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3288 let selection = Selection {
3289 id: post_inc(&mut self.next_selection_id),
3290 start: 0,
3291 end: self.buffer.read(cx).read(cx).len(),
3292 reversed: false,
3293 goal: SelectionGoal::None,
3294 };
3295 self.update_selections(vec![selection], None, cx);
3296 }
3297
3298 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3299 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3300 let mut selections = self.local_selections::<Point>(cx);
3301 let max_point = display_map.buffer_snapshot.max_point();
3302 for selection in &mut selections {
3303 let rows = selection.spanned_rows(true, &display_map);
3304 selection.start = Point::new(rows.start, 0);
3305 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3306 selection.reversed = false;
3307 }
3308 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3309 }
3310
3311 pub fn split_selection_into_lines(
3312 &mut self,
3313 _: &SplitSelectionIntoLines,
3314 cx: &mut ViewContext<Self>,
3315 ) {
3316 let mut to_unfold = Vec::new();
3317 let mut new_selections = Vec::new();
3318 {
3319 let selections = self.local_selections::<Point>(cx);
3320 let buffer = self.buffer.read(cx).read(cx);
3321 for selection in selections {
3322 for row in selection.start.row..selection.end.row {
3323 let cursor = Point::new(row, buffer.line_len(row));
3324 new_selections.push(Selection {
3325 id: post_inc(&mut self.next_selection_id),
3326 start: cursor,
3327 end: cursor,
3328 reversed: false,
3329 goal: SelectionGoal::None,
3330 });
3331 }
3332 new_selections.push(Selection {
3333 id: selection.id,
3334 start: selection.end,
3335 end: selection.end,
3336 reversed: false,
3337 goal: SelectionGoal::None,
3338 });
3339 to_unfold.push(selection.start..selection.end);
3340 }
3341 }
3342 self.unfold_ranges(to_unfold, cx);
3343 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3344 }
3345
3346 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3347 self.add_selection(true, cx);
3348 }
3349
3350 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3351 self.add_selection(false, cx);
3352 }
3353
3354 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3355 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3356 let mut selections = self.local_selections::<Point>(cx);
3357 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3358 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3359 let range = oldest_selection.display_range(&display_map).sorted();
3360 let columns = cmp::min(range.start.column(), range.end.column())
3361 ..cmp::max(range.start.column(), range.end.column());
3362
3363 selections.clear();
3364 let mut stack = Vec::new();
3365 for row in range.start.row()..=range.end.row() {
3366 if let Some(selection) = self.build_columnar_selection(
3367 &display_map,
3368 row,
3369 &columns,
3370 oldest_selection.reversed,
3371 ) {
3372 stack.push(selection.id);
3373 selections.push(selection);
3374 }
3375 }
3376
3377 if above {
3378 stack.reverse();
3379 }
3380
3381 AddSelectionsState { above, stack }
3382 });
3383
3384 let last_added_selection = *state.stack.last().unwrap();
3385 let mut new_selections = Vec::new();
3386 if above == state.above {
3387 let end_row = if above {
3388 0
3389 } else {
3390 display_map.max_point().row()
3391 };
3392
3393 'outer: for selection in selections {
3394 if selection.id == last_added_selection {
3395 let range = selection.display_range(&display_map).sorted();
3396 debug_assert_eq!(range.start.row(), range.end.row());
3397 let mut row = range.start.row();
3398 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3399 {
3400 start..end
3401 } else {
3402 cmp::min(range.start.column(), range.end.column())
3403 ..cmp::max(range.start.column(), range.end.column())
3404 };
3405
3406 while row != end_row {
3407 if above {
3408 row -= 1;
3409 } else {
3410 row += 1;
3411 }
3412
3413 if let Some(new_selection) = self.build_columnar_selection(
3414 &display_map,
3415 row,
3416 &columns,
3417 selection.reversed,
3418 ) {
3419 state.stack.push(new_selection.id);
3420 if above {
3421 new_selections.push(new_selection);
3422 new_selections.push(selection);
3423 } else {
3424 new_selections.push(selection);
3425 new_selections.push(new_selection);
3426 }
3427
3428 continue 'outer;
3429 }
3430 }
3431 }
3432
3433 new_selections.push(selection);
3434 }
3435 } else {
3436 new_selections = selections;
3437 new_selections.retain(|s| s.id != last_added_selection);
3438 state.stack.pop();
3439 }
3440
3441 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3442 if state.stack.len() > 1 {
3443 self.add_selections_state = Some(state);
3444 }
3445 }
3446
3447 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3448 let replace_newest = action.0;
3449 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3450 let buffer = &display_map.buffer_snapshot;
3451 let mut selections = self.local_selections::<usize>(cx);
3452 if let Some(mut select_next_state) = self.select_next_state.take() {
3453 let query = &select_next_state.query;
3454 if !select_next_state.done {
3455 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3456 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3457 let mut next_selected_range = None;
3458
3459 let bytes_after_last_selection =
3460 buffer.bytes_in_range(last_selection.end..buffer.len());
3461 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3462 let query_matches = query
3463 .stream_find_iter(bytes_after_last_selection)
3464 .map(|result| (last_selection.end, result))
3465 .chain(
3466 query
3467 .stream_find_iter(bytes_before_first_selection)
3468 .map(|result| (0, result)),
3469 );
3470 for (start_offset, query_match) in query_matches {
3471 let query_match = query_match.unwrap(); // can only fail due to I/O
3472 let offset_range =
3473 start_offset + query_match.start()..start_offset + query_match.end();
3474 let display_range = offset_range.start.to_display_point(&display_map)
3475 ..offset_range.end.to_display_point(&display_map);
3476
3477 if !select_next_state.wordwise
3478 || (!movement::is_inside_word(&display_map, display_range.start)
3479 && !movement::is_inside_word(&display_map, display_range.end))
3480 {
3481 next_selected_range = Some(offset_range);
3482 break;
3483 }
3484 }
3485
3486 if let Some(next_selected_range) = next_selected_range {
3487 if replace_newest {
3488 if let Some(newest_id) =
3489 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3490 {
3491 selections.retain(|s| s.id != newest_id);
3492 }
3493 }
3494 selections.push(Selection {
3495 id: post_inc(&mut self.next_selection_id),
3496 start: next_selected_range.start,
3497 end: next_selected_range.end,
3498 reversed: false,
3499 goal: SelectionGoal::None,
3500 });
3501 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3502 } else {
3503 select_next_state.done = true;
3504 }
3505 }
3506
3507 self.select_next_state = Some(select_next_state);
3508 } else if selections.len() == 1 {
3509 let selection = selections.last_mut().unwrap();
3510 if selection.start == selection.end {
3511 let word_range = movement::surrounding_word(
3512 &display_map,
3513 selection.start.to_display_point(&display_map),
3514 );
3515 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3516 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3517 selection.goal = SelectionGoal::None;
3518 selection.reversed = false;
3519
3520 let query = buffer
3521 .text_for_range(selection.start..selection.end)
3522 .collect::<String>();
3523 let select_state = SelectNextState {
3524 query: AhoCorasick::new_auto_configured(&[query]),
3525 wordwise: true,
3526 done: false,
3527 };
3528 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3529 self.select_next_state = Some(select_state);
3530 } else {
3531 let query = buffer
3532 .text_for_range(selection.start..selection.end)
3533 .collect::<String>();
3534 self.select_next_state = Some(SelectNextState {
3535 query: AhoCorasick::new_auto_configured(&[query]),
3536 wordwise: false,
3537 done: false,
3538 });
3539 self.select_next(action, cx);
3540 }
3541 }
3542 }
3543
3544 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3545 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3546 // as that portion won't be used for detecting if a line is a comment.
3547 let full_comment_prefix =
3548 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3549 prefix.to_string()
3550 } else {
3551 return;
3552 };
3553 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3554 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3555
3556 self.start_transaction(cx);
3557 let mut selections = self.local_selections::<Point>(cx);
3558 let mut all_selection_lines_are_comments = true;
3559 let mut edit_ranges = Vec::new();
3560 let mut last_toggled_row = None;
3561 self.buffer.update(cx, |buffer, cx| {
3562 for selection in &mut selections {
3563 edit_ranges.clear();
3564 let snapshot = buffer.snapshot(cx);
3565
3566 let end_row =
3567 if selection.end.row > selection.start.row && selection.end.column == 0 {
3568 selection.end.row
3569 } else {
3570 selection.end.row + 1
3571 };
3572
3573 for row in selection.start.row..end_row {
3574 // If multiple selections contain a given row, avoid processing that
3575 // row more than once.
3576 if last_toggled_row == Some(row) {
3577 continue;
3578 } else {
3579 last_toggled_row = Some(row);
3580 }
3581
3582 if snapshot.is_line_blank(row) {
3583 continue;
3584 }
3585
3586 let start = Point::new(row, snapshot.indent_column_for_line(row));
3587 let mut line_bytes = snapshot
3588 .bytes_in_range(start..snapshot.max_point())
3589 .flatten()
3590 .copied();
3591
3592 // If this line currently begins with the line comment prefix, then record
3593 // the range containing the prefix.
3594 if all_selection_lines_are_comments
3595 && line_bytes
3596 .by_ref()
3597 .take(comment_prefix.len())
3598 .eq(comment_prefix.bytes())
3599 {
3600 // Include any whitespace that matches the comment prefix.
3601 let matching_whitespace_len = line_bytes
3602 .zip(comment_prefix_whitespace.bytes())
3603 .take_while(|(a, b)| a == b)
3604 .count() as u32;
3605 let end = Point::new(
3606 row,
3607 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3608 );
3609 edit_ranges.push(start..end);
3610 }
3611 // If this line does not begin with the line comment prefix, then record
3612 // the position where the prefix should be inserted.
3613 else {
3614 all_selection_lines_are_comments = false;
3615 edit_ranges.push(start..start);
3616 }
3617 }
3618
3619 if !edit_ranges.is_empty() {
3620 if all_selection_lines_are_comments {
3621 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3622 } else {
3623 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3624 let edit_ranges = edit_ranges.iter().map(|range| {
3625 let position = Point::new(range.start.row, min_column);
3626 position..position
3627 });
3628 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3629 }
3630 }
3631 }
3632 });
3633
3634 self.update_selections(
3635 self.local_selections::<usize>(cx),
3636 Some(Autoscroll::Fit),
3637 cx,
3638 );
3639 self.end_transaction(cx);
3640 }
3641
3642 pub fn select_larger_syntax_node(
3643 &mut self,
3644 _: &SelectLargerSyntaxNode,
3645 cx: &mut ViewContext<Self>,
3646 ) {
3647 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3648 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3649 let buffer = self.buffer.read(cx).snapshot(cx);
3650
3651 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3652 let mut selected_larger_node = false;
3653 let new_selections = old_selections
3654 .iter()
3655 .map(|selection| {
3656 let old_range = selection.start..selection.end;
3657 let mut new_range = old_range.clone();
3658 while let Some(containing_range) =
3659 buffer.range_for_syntax_ancestor(new_range.clone())
3660 {
3661 new_range = containing_range;
3662 if !display_map.intersects_fold(new_range.start)
3663 && !display_map.intersects_fold(new_range.end)
3664 {
3665 break;
3666 }
3667 }
3668
3669 selected_larger_node |= new_range != old_range;
3670 Selection {
3671 id: selection.id,
3672 start: new_range.start,
3673 end: new_range.end,
3674 goal: SelectionGoal::None,
3675 reversed: selection.reversed,
3676 }
3677 })
3678 .collect::<Vec<_>>();
3679
3680 if selected_larger_node {
3681 stack.push(old_selections);
3682 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3683 }
3684 self.select_larger_syntax_node_stack = stack;
3685 }
3686
3687 pub fn select_smaller_syntax_node(
3688 &mut self,
3689 _: &SelectSmallerSyntaxNode,
3690 cx: &mut ViewContext<Self>,
3691 ) {
3692 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3693 if let Some(selections) = stack.pop() {
3694 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3695 }
3696 self.select_larger_syntax_node_stack = stack;
3697 }
3698
3699 pub fn move_to_enclosing_bracket(
3700 &mut self,
3701 _: &MoveToEnclosingBracket,
3702 cx: &mut ViewContext<Self>,
3703 ) {
3704 let mut selections = self.local_selections::<usize>(cx);
3705 let buffer = self.buffer.read(cx).snapshot(cx);
3706 for selection in &mut selections {
3707 if let Some((open_range, close_range)) =
3708 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3709 {
3710 let close_range = close_range.to_inclusive();
3711 let destination = if close_range.contains(&selection.start)
3712 && close_range.contains(&selection.end)
3713 {
3714 open_range.end
3715 } else {
3716 *close_range.start()
3717 };
3718 selection.start = destination;
3719 selection.end = destination;
3720 }
3721 }
3722
3723 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3724 }
3725
3726 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3727 let buffer = self.buffer.read(cx).snapshot(cx);
3728 let selection = self.newest_selection::<usize>(&buffer);
3729 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3730 active_diagnostics
3731 .primary_range
3732 .to_offset(&buffer)
3733 .to_inclusive()
3734 });
3735 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3736 if active_primary_range.contains(&selection.head()) {
3737 *active_primary_range.end()
3738 } else {
3739 selection.head()
3740 }
3741 } else {
3742 selection.head()
3743 };
3744
3745 loop {
3746 let next_group = buffer
3747 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3748 .find_map(|entry| {
3749 if entry.diagnostic.is_primary
3750 && !entry.range.is_empty()
3751 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3752 {
3753 Some((entry.range, entry.diagnostic.group_id))
3754 } else {
3755 None
3756 }
3757 });
3758
3759 if let Some((primary_range, group_id)) = next_group {
3760 self.activate_diagnostics(group_id, cx);
3761 self.update_selections(
3762 vec![Selection {
3763 id: selection.id,
3764 start: primary_range.start,
3765 end: primary_range.start,
3766 reversed: false,
3767 goal: SelectionGoal::None,
3768 }],
3769 Some(Autoscroll::Center),
3770 cx,
3771 );
3772 break;
3773 } else if search_start == 0 {
3774 break;
3775 } else {
3776 // Cycle around to the start of the buffer, potentially moving back to the start of
3777 // the currently active diagnostic.
3778 search_start = 0;
3779 active_primary_range.take();
3780 }
3781 }
3782 }
3783
3784 pub fn go_to_definition(
3785 workspace: &mut Workspace,
3786 _: &GoToDefinition,
3787 cx: &mut ViewContext<Workspace>,
3788 ) {
3789 let active_item = workspace.active_item(cx);
3790 let editor_handle = if let Some(editor) = active_item
3791 .as_ref()
3792 .and_then(|item| item.act_as::<Self>(cx))
3793 {
3794 editor
3795 } else {
3796 return;
3797 };
3798
3799 let editor = editor_handle.read(cx);
3800 let buffer = editor.buffer.read(cx);
3801 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3802 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3803 let definitions = workspace
3804 .project()
3805 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3806 cx.spawn(|workspace, mut cx| async move {
3807 let definitions = definitions.await?;
3808 workspace.update(&mut cx, |workspace, cx| {
3809 for definition in definitions {
3810 let range = definition
3811 .target_range
3812 .to_offset(definition.target_buffer.read(cx));
3813 let target_editor_handle = workspace
3814 .open_item(BufferItemHandle(definition.target_buffer), cx)
3815 .downcast::<Self>()
3816 .unwrap();
3817
3818 target_editor_handle.update(cx, |target_editor, cx| {
3819 // When selecting a definition in a different buffer, disable the nav history
3820 // to avoid creating a history entry at the previous cursor location.
3821 let disabled_history = if editor_handle == target_editor_handle {
3822 None
3823 } else {
3824 target_editor.nav_history.take()
3825 };
3826 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3827 if disabled_history.is_some() {
3828 target_editor.nav_history = disabled_history;
3829 }
3830 });
3831 }
3832 });
3833
3834 Ok::<(), anyhow::Error>(())
3835 })
3836 .detach_and_log_err(cx);
3837 }
3838
3839 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3840 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3841 let buffer = self.buffer.read(cx).snapshot(cx);
3842 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3843 let is_valid = buffer
3844 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3845 .any(|entry| {
3846 entry.diagnostic.is_primary
3847 && !entry.range.is_empty()
3848 && entry.range.start == primary_range_start
3849 && entry.diagnostic.message == active_diagnostics.primary_message
3850 });
3851
3852 if is_valid != active_diagnostics.is_valid {
3853 active_diagnostics.is_valid = is_valid;
3854 let mut new_styles = HashMap::default();
3855 for (block_id, diagnostic) in &active_diagnostics.blocks {
3856 new_styles.insert(
3857 *block_id,
3858 diagnostic_block_renderer(
3859 diagnostic.clone(),
3860 is_valid,
3861 self.build_settings.clone(),
3862 ),
3863 );
3864 }
3865 self.display_map
3866 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3867 }
3868 }
3869 }
3870
3871 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3872 self.dismiss_diagnostics(cx);
3873 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3874 let buffer = self.buffer.read(cx).snapshot(cx);
3875
3876 let mut primary_range = None;
3877 let mut primary_message = None;
3878 let mut group_end = Point::zero();
3879 let diagnostic_group = buffer
3880 .diagnostic_group::<Point>(group_id)
3881 .map(|entry| {
3882 if entry.range.end > group_end {
3883 group_end = entry.range.end;
3884 }
3885 if entry.diagnostic.is_primary {
3886 primary_range = Some(entry.range.clone());
3887 primary_message = Some(entry.diagnostic.message.clone());
3888 }
3889 entry
3890 })
3891 .collect::<Vec<_>>();
3892 let primary_range = primary_range.unwrap();
3893 let primary_message = primary_message.unwrap();
3894 let primary_range =
3895 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3896
3897 let blocks = display_map
3898 .insert_blocks(
3899 diagnostic_group.iter().map(|entry| {
3900 let build_settings = self.build_settings.clone();
3901 let diagnostic = entry.diagnostic.clone();
3902 let message_height = diagnostic.message.lines().count() as u8;
3903
3904 BlockProperties {
3905 position: buffer.anchor_after(entry.range.start),
3906 height: message_height,
3907 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3908 disposition: BlockDisposition::Below,
3909 }
3910 }),
3911 cx,
3912 )
3913 .into_iter()
3914 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3915 .collect();
3916
3917 Some(ActiveDiagnosticGroup {
3918 primary_range,
3919 primary_message,
3920 blocks,
3921 is_valid: true,
3922 })
3923 });
3924 }
3925
3926 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3927 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3928 self.display_map.update(cx, |display_map, cx| {
3929 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3930 });
3931 cx.notify();
3932 }
3933 }
3934
3935 fn build_columnar_selection(
3936 &mut self,
3937 display_map: &DisplaySnapshot,
3938 row: u32,
3939 columns: &Range<u32>,
3940 reversed: bool,
3941 ) -> Option<Selection<Point>> {
3942 let is_empty = columns.start == columns.end;
3943 let line_len = display_map.line_len(row);
3944 if columns.start < line_len || (is_empty && columns.start == line_len) {
3945 let start = DisplayPoint::new(row, columns.start);
3946 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3947 Some(Selection {
3948 id: post_inc(&mut self.next_selection_id),
3949 start: start.to_point(display_map),
3950 end: end.to_point(display_map),
3951 reversed,
3952 goal: SelectionGoal::ColumnRange {
3953 start: columns.start,
3954 end: columns.end,
3955 },
3956 })
3957 } else {
3958 None
3959 }
3960 }
3961
3962 pub fn local_selections_in_range(
3963 &self,
3964 range: Range<Anchor>,
3965 display_map: &DisplaySnapshot,
3966 ) -> Vec<Selection<Point>> {
3967 let buffer = &display_map.buffer_snapshot;
3968
3969 let start_ix = match self
3970 .selections
3971 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3972 {
3973 Ok(ix) | Err(ix) => ix,
3974 };
3975 let end_ix = match self
3976 .selections
3977 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3978 {
3979 Ok(ix) => ix + 1,
3980 Err(ix) => ix,
3981 };
3982
3983 fn point_selection(
3984 selection: &Selection<Anchor>,
3985 buffer: &MultiBufferSnapshot,
3986 ) -> Selection<Point> {
3987 let start = selection.start.to_point(&buffer);
3988 let end = selection.end.to_point(&buffer);
3989 Selection {
3990 id: selection.id,
3991 start,
3992 end,
3993 reversed: selection.reversed,
3994 goal: selection.goal,
3995 }
3996 }
3997
3998 self.selections[start_ix..end_ix]
3999 .iter()
4000 .chain(
4001 self.pending_selection
4002 .as_ref()
4003 .map(|pending| &pending.selection),
4004 )
4005 .map(|s| point_selection(s, &buffer))
4006 .collect()
4007 }
4008
4009 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4010 where
4011 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4012 {
4013 let buffer = self.buffer.read(cx).snapshot(cx);
4014 let mut selections = self
4015 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4016 .peekable();
4017
4018 let mut pending_selection = self.pending_selection::<D>(&buffer);
4019
4020 iter::from_fn(move || {
4021 if let Some(pending) = pending_selection.as_mut() {
4022 while let Some(next_selection) = selections.peek() {
4023 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4024 let next_selection = selections.next().unwrap();
4025 if next_selection.start < pending.start {
4026 pending.start = next_selection.start;
4027 }
4028 if next_selection.end > pending.end {
4029 pending.end = next_selection.end;
4030 }
4031 } else if next_selection.end < pending.start {
4032 return selections.next();
4033 } else {
4034 break;
4035 }
4036 }
4037
4038 pending_selection.take()
4039 } else {
4040 selections.next()
4041 }
4042 })
4043 .collect()
4044 }
4045
4046 fn resolve_selections<'a, D, I>(
4047 &self,
4048 selections: I,
4049 snapshot: &MultiBufferSnapshot,
4050 ) -> impl 'a + Iterator<Item = Selection<D>>
4051 where
4052 D: TextDimension + Ord + Sub<D, Output = D>,
4053 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4054 {
4055 let (to_summarize, selections) = selections.into_iter().tee();
4056 let mut summaries = snapshot
4057 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4058 .into_iter();
4059 selections.map(move |s| Selection {
4060 id: s.id,
4061 start: summaries.next().unwrap(),
4062 end: summaries.next().unwrap(),
4063 reversed: s.reversed,
4064 goal: s.goal,
4065 })
4066 }
4067
4068 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4069 &self,
4070 snapshot: &MultiBufferSnapshot,
4071 ) -> Option<Selection<D>> {
4072 self.pending_selection
4073 .as_ref()
4074 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4075 }
4076
4077 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4078 &self,
4079 selection: &Selection<Anchor>,
4080 buffer: &MultiBufferSnapshot,
4081 ) -> Selection<D> {
4082 Selection {
4083 id: selection.id,
4084 start: selection.start.summary::<D>(&buffer),
4085 end: selection.end.summary::<D>(&buffer),
4086 reversed: selection.reversed,
4087 goal: selection.goal,
4088 }
4089 }
4090
4091 fn selection_count<'a>(&self) -> usize {
4092 let mut count = self.selections.len();
4093 if self.pending_selection.is_some() {
4094 count += 1;
4095 }
4096 count
4097 }
4098
4099 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4100 &self,
4101 snapshot: &MultiBufferSnapshot,
4102 ) -> Selection<D> {
4103 self.selections
4104 .iter()
4105 .min_by_key(|s| s.id)
4106 .map(|selection| self.resolve_selection(selection, snapshot))
4107 .or_else(|| self.pending_selection(snapshot))
4108 .unwrap()
4109 }
4110
4111 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4112 &self,
4113 snapshot: &MultiBufferSnapshot,
4114 ) -> Selection<D> {
4115 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4116 }
4117
4118 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4119 self.pending_selection
4120 .as_ref()
4121 .map(|s| &s.selection)
4122 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4123 }
4124
4125 pub fn update_selections<T>(
4126 &mut self,
4127 mut selections: Vec<Selection<T>>,
4128 autoscroll: Option<Autoscroll>,
4129 cx: &mut ViewContext<Self>,
4130 ) where
4131 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4132 {
4133 let buffer = self.buffer.read(cx).snapshot(cx);
4134 selections.sort_unstable_by_key(|s| s.start);
4135
4136 // Merge overlapping selections.
4137 let mut i = 1;
4138 while i < selections.len() {
4139 if selections[i - 1].end >= selections[i].start {
4140 let removed = selections.remove(i);
4141 if removed.start < selections[i - 1].start {
4142 selections[i - 1].start = removed.start;
4143 }
4144 if removed.end > selections[i - 1].end {
4145 selections[i - 1].end = removed.end;
4146 }
4147 } else {
4148 i += 1;
4149 }
4150 }
4151
4152 if let Some(autoscroll) = autoscroll {
4153 self.request_autoscroll(autoscroll, cx);
4154 }
4155
4156 self.set_selections(
4157 Arc::from_iter(selections.into_iter().map(|selection| {
4158 let end_bias = if selection.end > selection.start {
4159 Bias::Left
4160 } else {
4161 Bias::Right
4162 };
4163 Selection {
4164 id: selection.id,
4165 start: buffer.anchor_after(selection.start),
4166 end: buffer.anchor_at(selection.end, end_bias),
4167 reversed: selection.reversed,
4168 goal: selection.goal,
4169 }
4170 })),
4171 cx,
4172 );
4173 }
4174
4175 /// Compute new ranges for any selections that were located in excerpts that have
4176 /// since been removed.
4177 ///
4178 /// Returns a `HashMap` indicating which selections whose former head position
4179 /// was no longer present. The keys of the map are selection ids. The values are
4180 /// the id of the new excerpt where the head of the selection has been moved.
4181 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4182 let snapshot = self.buffer.read(cx).read(cx);
4183 let anchors_with_status = snapshot.refresh_anchors(
4184 self.selections
4185 .iter()
4186 .flat_map(|selection| [&selection.start, &selection.end]),
4187 );
4188 let offsets =
4189 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4190 let offsets = offsets.chunks(2);
4191 let statuses = anchors_with_status
4192 .chunks(2)
4193 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4194
4195 let mut selections_with_lost_position = HashMap::default();
4196 let new_selections = offsets
4197 .zip(statuses)
4198 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4199 let selection = &self.selections[selection_ix];
4200 let kept_head = if selection.reversed {
4201 kept_start
4202 } else {
4203 kept_end
4204 };
4205 if !kept_head {
4206 selections_with_lost_position
4207 .insert(selection.id, selection.head().excerpt_id.clone());
4208 }
4209
4210 Selection {
4211 id: selection.id,
4212 start: offsets[0],
4213 end: offsets[1],
4214 reversed: selection.reversed,
4215 goal: selection.goal,
4216 }
4217 })
4218 .collect();
4219 drop(snapshot);
4220 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4221 selections_with_lost_position
4222 }
4223
4224 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4225 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4226 self.selections = selections;
4227 if self.focused {
4228 self.buffer.update(cx, |buffer, cx| {
4229 buffer.set_active_selections(&self.selections, cx)
4230 });
4231 }
4232
4233 let buffer = self.buffer.read(cx).snapshot(cx);
4234 self.pending_selection = None;
4235 self.add_selections_state = None;
4236 self.select_next_state = None;
4237 self.select_larger_syntax_node_stack.clear();
4238 self.autoclose_stack.invalidate(&self.selections, &buffer);
4239 self.snippet_stack.invalidate(&self.selections, &buffer);
4240
4241 let new_cursor_position = self
4242 .selections
4243 .iter()
4244 .max_by_key(|s| s.id)
4245 .map(|s| s.head());
4246 if let Some(old_cursor_position) = old_cursor_position {
4247 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4248 self.push_to_nav_history(
4249 old_cursor_position,
4250 Some(new_cursor_position.to_point(&buffer)),
4251 cx,
4252 );
4253 }
4254 }
4255
4256 let completion_menu = match self.context_menu.as_mut() {
4257 Some(ContextMenu::Completions(menu)) => Some(menu),
4258 _ => {
4259 self.context_menu.take();
4260 None
4261 }
4262 };
4263
4264 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4265 let cursor_position = cursor_position.to_offset(&buffer);
4266 let (word_range, kind) =
4267 buffer.surrounding_word(completion_menu.initial_position.clone());
4268 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4269 {
4270 let query = Self::completion_query(&buffer, cursor_position);
4271 cx.background()
4272 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4273 self.show_completions(&ShowCompletions, cx);
4274 } else {
4275 self.hide_context_menu(cx);
4276 }
4277 }
4278
4279 self.pause_cursor_blinking(cx);
4280 cx.emit(Event::SelectionsChanged);
4281 }
4282
4283 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4284 self.autoscroll_request = Some(autoscroll);
4285 cx.notify();
4286 }
4287
4288 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4289 self.start_transaction_at(Instant::now(), cx);
4290 }
4291
4292 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4293 self.end_selection(cx);
4294 if let Some(tx_id) = self
4295 .buffer
4296 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4297 {
4298 self.selection_history
4299 .insert(tx_id, (self.selections.clone(), None));
4300 }
4301 }
4302
4303 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4304 self.end_transaction_at(Instant::now(), cx);
4305 }
4306
4307 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4308 if let Some(tx_id) = self
4309 .buffer
4310 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4311 {
4312 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4313 *end_selections = Some(self.selections.clone());
4314 } else {
4315 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4316 }
4317 }
4318 }
4319
4320 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4321 log::info!("Editor::page_up");
4322 }
4323
4324 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4325 log::info!("Editor::page_down");
4326 }
4327
4328 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4329 let mut fold_ranges = Vec::new();
4330
4331 let selections = self.local_selections::<Point>(cx);
4332 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4333 for selection in selections {
4334 let range = selection.display_range(&display_map).sorted();
4335 let buffer_start_row = range.start.to_point(&display_map).row;
4336
4337 for row in (0..=range.end.row()).rev() {
4338 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4339 let fold_range = self.foldable_range_for_line(&display_map, row);
4340 if fold_range.end.row >= buffer_start_row {
4341 fold_ranges.push(fold_range);
4342 if row <= range.start.row() {
4343 break;
4344 }
4345 }
4346 }
4347 }
4348 }
4349
4350 self.fold_ranges(fold_ranges, cx);
4351 }
4352
4353 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4354 let selections = self.local_selections::<Point>(cx);
4355 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4356 let buffer = &display_map.buffer_snapshot;
4357 let ranges = selections
4358 .iter()
4359 .map(|s| {
4360 let range = s.display_range(&display_map).sorted();
4361 let mut start = range.start.to_point(&display_map);
4362 let mut end = range.end.to_point(&display_map);
4363 start.column = 0;
4364 end.column = buffer.line_len(end.row);
4365 start..end
4366 })
4367 .collect::<Vec<_>>();
4368 self.unfold_ranges(ranges, cx);
4369 }
4370
4371 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4372 let max_point = display_map.max_point();
4373 if display_row >= max_point.row() {
4374 false
4375 } else {
4376 let (start_indent, is_blank) = display_map.line_indent(display_row);
4377 if is_blank {
4378 false
4379 } else {
4380 for display_row in display_row + 1..=max_point.row() {
4381 let (indent, is_blank) = display_map.line_indent(display_row);
4382 if !is_blank {
4383 return indent > start_indent;
4384 }
4385 }
4386 false
4387 }
4388 }
4389 }
4390
4391 fn foldable_range_for_line(
4392 &self,
4393 display_map: &DisplaySnapshot,
4394 start_row: u32,
4395 ) -> Range<Point> {
4396 let max_point = display_map.max_point();
4397
4398 let (start_indent, _) = display_map.line_indent(start_row);
4399 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4400 let mut end = None;
4401 for row in start_row + 1..=max_point.row() {
4402 let (indent, is_blank) = display_map.line_indent(row);
4403 if !is_blank && indent <= start_indent {
4404 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4405 break;
4406 }
4407 }
4408
4409 let end = end.unwrap_or(max_point);
4410 return start.to_point(display_map)..end.to_point(display_map);
4411 }
4412
4413 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4414 let selections = self.local_selections::<Point>(cx);
4415 let ranges = selections.into_iter().map(|s| s.start..s.end);
4416 self.fold_ranges(ranges, cx);
4417 }
4418
4419 fn fold_ranges<T: ToOffset>(
4420 &mut self,
4421 ranges: impl IntoIterator<Item = Range<T>>,
4422 cx: &mut ViewContext<Self>,
4423 ) {
4424 let mut ranges = ranges.into_iter().peekable();
4425 if ranges.peek().is_some() {
4426 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4427 self.request_autoscroll(Autoscroll::Fit, cx);
4428 cx.notify();
4429 }
4430 }
4431
4432 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4433 if !ranges.is_empty() {
4434 self.display_map
4435 .update(cx, |map, cx| map.unfold(ranges, cx));
4436 self.request_autoscroll(Autoscroll::Fit, cx);
4437 cx.notify();
4438 }
4439 }
4440
4441 pub fn insert_blocks(
4442 &mut self,
4443 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4444 cx: &mut ViewContext<Self>,
4445 ) -> Vec<BlockId> {
4446 let blocks = self
4447 .display_map
4448 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4449 self.request_autoscroll(Autoscroll::Fit, cx);
4450 blocks
4451 }
4452
4453 pub fn replace_blocks(
4454 &mut self,
4455 blocks: HashMap<BlockId, RenderBlock>,
4456 cx: &mut ViewContext<Self>,
4457 ) {
4458 self.display_map
4459 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4460 self.request_autoscroll(Autoscroll::Fit, cx);
4461 }
4462
4463 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4464 self.display_map.update(cx, |display_map, cx| {
4465 display_map.remove_blocks(block_ids, cx)
4466 });
4467 }
4468
4469 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4470 self.display_map
4471 .update(cx, |map, cx| map.snapshot(cx))
4472 .longest_row()
4473 }
4474
4475 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4476 self.display_map
4477 .update(cx, |map, cx| map.snapshot(cx))
4478 .max_point()
4479 }
4480
4481 pub fn text(&self, cx: &AppContext) -> String {
4482 self.buffer.read(cx).read(cx).text()
4483 }
4484
4485 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4486 self.display_map
4487 .update(cx, |map, cx| map.snapshot(cx))
4488 .text()
4489 }
4490
4491 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4492 self.display_map
4493 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4494 }
4495
4496 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4497 self.highlighted_rows = rows;
4498 }
4499
4500 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4501 self.highlighted_rows.clone()
4502 }
4503
4504 pub fn highlight_ranges<T: 'static>(
4505 &mut self,
4506 ranges: Vec<Range<Anchor>>,
4507 color: Color,
4508 cx: &mut ViewContext<Self>,
4509 ) {
4510 self.highlighted_ranges
4511 .insert(TypeId::of::<T>(), (color, ranges));
4512 cx.notify();
4513 }
4514
4515 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4516 self.highlighted_ranges.remove(&TypeId::of::<T>());
4517 cx.notify();
4518 }
4519
4520 #[cfg(feature = "test-support")]
4521 pub fn all_highlighted_ranges(
4522 &mut self,
4523 cx: &mut ViewContext<Self>,
4524 ) -> Vec<(Range<DisplayPoint>, Color)> {
4525 let snapshot = self.snapshot(cx);
4526 let buffer = &snapshot.buffer_snapshot;
4527 let start = buffer.anchor_before(0);
4528 let end = buffer.anchor_after(buffer.len());
4529 self.highlighted_ranges_in_range(start..end, &snapshot)
4530 }
4531
4532 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4533 self.highlighted_ranges
4534 .get(&TypeId::of::<T>())
4535 .map(|(color, ranges)| (*color, ranges.as_slice()))
4536 }
4537
4538 pub fn highlighted_ranges_in_range(
4539 &self,
4540 search_range: Range<Anchor>,
4541 display_snapshot: &DisplaySnapshot,
4542 ) -> Vec<(Range<DisplayPoint>, Color)> {
4543 let mut results = Vec::new();
4544 let buffer = &display_snapshot.buffer_snapshot;
4545 for (color, ranges) in self.highlighted_ranges.values() {
4546 let start_ix = match ranges.binary_search_by(|probe| {
4547 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4548 if cmp.is_gt() {
4549 Ordering::Greater
4550 } else {
4551 Ordering::Less
4552 }
4553 }) {
4554 Ok(i) | Err(i) => i,
4555 };
4556 for range in &ranges[start_ix..] {
4557 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4558 break;
4559 }
4560 let start = range
4561 .start
4562 .to_point(buffer)
4563 .to_display_point(display_snapshot);
4564 let end = range
4565 .end
4566 .to_point(buffer)
4567 .to_display_point(display_snapshot);
4568 results.push((start..end, *color))
4569 }
4570 }
4571 results
4572 }
4573
4574 fn next_blink_epoch(&mut self) -> usize {
4575 self.blink_epoch += 1;
4576 self.blink_epoch
4577 }
4578
4579 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4580 if !self.focused {
4581 return;
4582 }
4583
4584 self.show_local_cursors = true;
4585 cx.notify();
4586
4587 let epoch = self.next_blink_epoch();
4588 cx.spawn(|this, mut cx| {
4589 let this = this.downgrade();
4590 async move {
4591 Timer::after(CURSOR_BLINK_INTERVAL).await;
4592 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4593 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4594 }
4595 }
4596 })
4597 .detach();
4598 }
4599
4600 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4601 if epoch == self.blink_epoch {
4602 self.blinking_paused = false;
4603 self.blink_cursors(epoch, cx);
4604 }
4605 }
4606
4607 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4608 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4609 self.show_local_cursors = !self.show_local_cursors;
4610 cx.notify();
4611
4612 let epoch = self.next_blink_epoch();
4613 cx.spawn(|this, mut cx| {
4614 let this = this.downgrade();
4615 async move {
4616 Timer::after(CURSOR_BLINK_INTERVAL).await;
4617 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4618 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4619 }
4620 }
4621 })
4622 .detach();
4623 }
4624 }
4625
4626 pub fn show_local_cursors(&self) -> bool {
4627 self.show_local_cursors
4628 }
4629
4630 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4631 self.refresh_active_diagnostics(cx);
4632 cx.notify();
4633 }
4634
4635 fn on_buffer_event(
4636 &mut self,
4637 _: ModelHandle<MultiBuffer>,
4638 event: &language::Event,
4639 cx: &mut ViewContext<Self>,
4640 ) {
4641 match event {
4642 language::Event::Edited => cx.emit(Event::Edited),
4643 language::Event::Dirtied => cx.emit(Event::Dirtied),
4644 language::Event::Saved => cx.emit(Event::Saved),
4645 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4646 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4647 language::Event::Closed => cx.emit(Event::Closed),
4648 _ => {}
4649 }
4650 }
4651
4652 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4653 cx.notify();
4654 }
4655}
4656
4657impl EditorSnapshot {
4658 pub fn is_focused(&self) -> bool {
4659 self.is_focused
4660 }
4661
4662 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4663 self.placeholder_text.as_ref()
4664 }
4665
4666 pub fn scroll_position(&self) -> Vector2F {
4667 compute_scroll_position(
4668 &self.display_snapshot,
4669 self.scroll_position,
4670 &self.scroll_top_anchor,
4671 )
4672 }
4673}
4674
4675impl Deref for EditorSnapshot {
4676 type Target = DisplaySnapshot;
4677
4678 fn deref(&self) -> &Self::Target {
4679 &self.display_snapshot
4680 }
4681}
4682
4683impl EditorSettings {
4684 #[cfg(any(test, feature = "test-support"))]
4685 pub fn test(cx: &AppContext) -> Self {
4686 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4687
4688 Self {
4689 tab_size: 4,
4690 soft_wrap: SoftWrap::None,
4691 style: {
4692 let font_cache: &gpui::FontCache = cx.font_cache();
4693 let font_family_name = Arc::from("Monaco");
4694 let font_properties = Default::default();
4695 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4696 let font_id = font_cache
4697 .select_font(font_family_id, &font_properties)
4698 .unwrap();
4699 let text = gpui::fonts::TextStyle {
4700 font_family_name,
4701 font_family_id,
4702 font_id,
4703 font_size: 14.,
4704 color: gpui::color::Color::from_u32(0xff0000ff),
4705 font_properties,
4706 underline: None,
4707 };
4708 let default_diagnostic_style = DiagnosticStyle {
4709 message: text.clone().into(),
4710 header: Default::default(),
4711 text_scale_factor: 1.,
4712 };
4713 EditorStyle {
4714 text: text.clone(),
4715 placeholder_text: None,
4716 background: Default::default(),
4717 gutter_background: Default::default(),
4718 gutter_padding_factor: 2.,
4719 active_line_background: Default::default(),
4720 highlighted_line_background: Default::default(),
4721 line_number: Default::default(),
4722 line_number_active: Default::default(),
4723 selection: Default::default(),
4724 guest_selections: Default::default(),
4725 syntax: Default::default(),
4726 diagnostic_path_header: DiagnosticPathHeader {
4727 container: Default::default(),
4728 filename: ContainedText {
4729 container: Default::default(),
4730 text: text.clone(),
4731 },
4732 path: ContainedText {
4733 container: Default::default(),
4734 text: text.clone(),
4735 },
4736 text_scale_factor: 1.,
4737 },
4738 diagnostic_header: DiagnosticHeader {
4739 container: Default::default(),
4740 message: ContainedLabel {
4741 container: Default::default(),
4742 label: text.clone().into(),
4743 },
4744 code: ContainedText {
4745 container: Default::default(),
4746 text: text.clone(),
4747 },
4748 icon_width_factor: 1.,
4749 text_scale_factor: 1.,
4750 },
4751 error_diagnostic: default_diagnostic_style.clone(),
4752 invalid_error_diagnostic: default_diagnostic_style.clone(),
4753 warning_diagnostic: default_diagnostic_style.clone(),
4754 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4755 information_diagnostic: default_diagnostic_style.clone(),
4756 invalid_information_diagnostic: default_diagnostic_style.clone(),
4757 hint_diagnostic: default_diagnostic_style.clone(),
4758 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4759 autocomplete: Default::default(),
4760 }
4761 },
4762 }
4763 }
4764}
4765
4766fn compute_scroll_position(
4767 snapshot: &DisplaySnapshot,
4768 mut scroll_position: Vector2F,
4769 scroll_top_anchor: &Option<Anchor>,
4770) -> Vector2F {
4771 if let Some(anchor) = scroll_top_anchor {
4772 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4773 scroll_position.set_y(scroll_top + scroll_position.y());
4774 } else {
4775 scroll_position.set_y(0.);
4776 }
4777 scroll_position
4778}
4779
4780#[derive(Copy, Clone)]
4781pub enum Event {
4782 Activate,
4783 Edited,
4784 Blurred,
4785 Dirtied,
4786 Saved,
4787 TitleChanged,
4788 SelectionsChanged,
4789 Closed,
4790}
4791
4792impl Entity for Editor {
4793 type Event = Event;
4794}
4795
4796impl View for Editor {
4797 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4798 let settings = (self.build_settings)(cx);
4799 self.display_map.update(cx, |map, cx| {
4800 map.set_font(
4801 settings.style.text.font_id,
4802 settings.style.text.font_size,
4803 cx,
4804 )
4805 });
4806 EditorElement::new(self.handle.clone(), settings).boxed()
4807 }
4808
4809 fn ui_name() -> &'static str {
4810 "Editor"
4811 }
4812
4813 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4814 self.focused = true;
4815 self.blink_cursors(self.blink_epoch, cx);
4816 self.buffer.update(cx, |buffer, cx| {
4817 buffer.avoid_grouping_next_transaction(cx);
4818 buffer.set_active_selections(&self.selections, cx)
4819 });
4820 }
4821
4822 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4823 self.focused = false;
4824 self.show_local_cursors = false;
4825 self.buffer
4826 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4827 self.hide_context_menu(cx);
4828 cx.emit(Event::Blurred);
4829 cx.notify();
4830 }
4831
4832 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4833 let mut cx = Self::default_keymap_context();
4834 let mode = match self.mode {
4835 EditorMode::SingleLine => "single_line",
4836 EditorMode::AutoHeight { .. } => "auto_height",
4837 EditorMode::Full => "full",
4838 };
4839 cx.map.insert("mode".into(), mode.into());
4840 match self.context_menu.as_ref() {
4841 Some(ContextMenu::Completions(_)) => {
4842 cx.set.insert("showing_completions".into());
4843 }
4844 Some(ContextMenu::CodeActions(_)) => {
4845 cx.set.insert("showing_code_actions".into());
4846 }
4847 None => {}
4848 }
4849 cx
4850 }
4851}
4852
4853impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4854 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4855 let start = self.start.to_point(buffer);
4856 let end = self.end.to_point(buffer);
4857 if self.reversed {
4858 end..start
4859 } else {
4860 start..end
4861 }
4862 }
4863
4864 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4865 let start = self.start.to_offset(buffer);
4866 let end = self.end.to_offset(buffer);
4867 if self.reversed {
4868 end..start
4869 } else {
4870 start..end
4871 }
4872 }
4873
4874 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4875 let start = self
4876 .start
4877 .to_point(&map.buffer_snapshot)
4878 .to_display_point(map);
4879 let end = self
4880 .end
4881 .to_point(&map.buffer_snapshot)
4882 .to_display_point(map);
4883 if self.reversed {
4884 end..start
4885 } else {
4886 start..end
4887 }
4888 }
4889
4890 fn spanned_rows(
4891 &self,
4892 include_end_if_at_line_start: bool,
4893 map: &DisplaySnapshot,
4894 ) -> Range<u32> {
4895 let start = self.start.to_point(&map.buffer_snapshot);
4896 let mut end = self.end.to_point(&map.buffer_snapshot);
4897 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4898 end.row -= 1;
4899 }
4900
4901 let buffer_start = map.prev_line_boundary(start).0;
4902 let buffer_end = map.next_line_boundary(end).0;
4903 buffer_start.row..buffer_end.row + 1
4904 }
4905}
4906
4907impl<T: InvalidationRegion> InvalidationStack<T> {
4908 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4909 where
4910 S: Clone + ToOffset,
4911 {
4912 while let Some(region) = self.last() {
4913 let all_selections_inside_invalidation_ranges =
4914 if selections.len() == region.ranges().len() {
4915 selections
4916 .iter()
4917 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4918 .all(|(selection, invalidation_range)| {
4919 let head = selection.head().to_offset(&buffer);
4920 invalidation_range.start <= head && invalidation_range.end >= head
4921 })
4922 } else {
4923 false
4924 };
4925
4926 if all_selections_inside_invalidation_ranges {
4927 break;
4928 } else {
4929 self.pop();
4930 }
4931 }
4932 }
4933}
4934
4935impl<T> Default for InvalidationStack<T> {
4936 fn default() -> Self {
4937 Self(Default::default())
4938 }
4939}
4940
4941impl<T> Deref for InvalidationStack<T> {
4942 type Target = Vec<T>;
4943
4944 fn deref(&self) -> &Self::Target {
4945 &self.0
4946 }
4947}
4948
4949impl<T> DerefMut for InvalidationStack<T> {
4950 fn deref_mut(&mut self) -> &mut Self::Target {
4951 &mut self.0
4952 }
4953}
4954
4955impl InvalidationRegion for BracketPairState {
4956 fn ranges(&self) -> &[Range<Anchor>] {
4957 &self.ranges
4958 }
4959}
4960
4961impl InvalidationRegion for SnippetState {
4962 fn ranges(&self) -> &[Range<Anchor>] {
4963 &self.ranges[self.active_index]
4964 }
4965}
4966
4967pub fn diagnostic_block_renderer(
4968 diagnostic: Diagnostic,
4969 is_valid: bool,
4970 build_settings: BuildSettings,
4971) -> RenderBlock {
4972 let mut highlighted_lines = Vec::new();
4973 for line in diagnostic.message.lines() {
4974 highlighted_lines.push(highlight_diagnostic_message(line));
4975 }
4976
4977 Arc::new(move |cx: &BlockContext| {
4978 let settings = build_settings(cx);
4979 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4980 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4981 Flex::column()
4982 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4983 Label::new(
4984 line.clone(),
4985 style.message.clone().with_font_size(font_size),
4986 )
4987 .with_highlights(highlights.clone())
4988 .contained()
4989 .with_margin_left(cx.anchor_x)
4990 .boxed()
4991 }))
4992 .aligned()
4993 .left()
4994 .boxed()
4995 })
4996}
4997
4998pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
4999 let mut message_without_backticks = String::new();
5000 let mut prev_offset = 0;
5001 let mut inside_block = false;
5002 let mut highlights = Vec::new();
5003 for (match_ix, (offset, _)) in message
5004 .match_indices('`')
5005 .chain([(message.len(), "")])
5006 .enumerate()
5007 {
5008 message_without_backticks.push_str(&message[prev_offset..offset]);
5009 if inside_block {
5010 highlights.extend(prev_offset - match_ix..offset - match_ix);
5011 }
5012
5013 inside_block = !inside_block;
5014 prev_offset = offset + 1;
5015 }
5016
5017 (message_without_backticks, highlights)
5018}
5019
5020pub fn diagnostic_style(
5021 severity: DiagnosticSeverity,
5022 valid: bool,
5023 style: &EditorStyle,
5024) -> DiagnosticStyle {
5025 match (severity, valid) {
5026 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5027 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5028 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5029 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5030 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5031 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5032 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5033 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5034 _ => DiagnosticStyle {
5035 message: style.text.clone().into(),
5036 header: Default::default(),
5037 text_scale_factor: 1.,
5038 },
5039 }
5040}
5041
5042pub fn settings_builder(
5043 buffer: WeakModelHandle<MultiBuffer>,
5044 settings: watch::Receiver<workspace::Settings>,
5045) -> BuildSettings {
5046 Arc::new(move |cx| {
5047 let settings = settings.borrow();
5048 let font_cache = cx.font_cache();
5049 let font_family_id = settings.buffer_font_family;
5050 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5051 let font_properties = Default::default();
5052 let font_id = font_cache
5053 .select_font(font_family_id, &font_properties)
5054 .unwrap();
5055 let font_size = settings.buffer_font_size;
5056
5057 let mut theme = settings.theme.editor.clone();
5058 theme.text = TextStyle {
5059 color: theme.text.color,
5060 font_family_name,
5061 font_family_id,
5062 font_id,
5063 font_size,
5064 font_properties,
5065 underline: None,
5066 };
5067 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5068 let soft_wrap = match settings.soft_wrap(language) {
5069 workspace::settings::SoftWrap::None => SoftWrap::None,
5070 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5071 workspace::settings::SoftWrap::PreferredLineLength => {
5072 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5073 }
5074 };
5075
5076 EditorSettings {
5077 tab_size: settings.tab_size,
5078 soft_wrap,
5079 style: theme,
5080 }
5081 })
5082}
5083
5084pub fn combine_syntax_and_fuzzy_match_highlights(
5085 text: &str,
5086 default_style: HighlightStyle,
5087 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5088 match_indices: &[usize],
5089) -> Vec<(Range<usize>, HighlightStyle)> {
5090 let mut result = Vec::new();
5091 let mut match_indices = match_indices.iter().copied().peekable();
5092
5093 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5094 {
5095 syntax_highlight.font_properties.weight(Default::default());
5096
5097 // Add highlights for any fuzzy match characters before the next
5098 // syntax highlight range.
5099 while let Some(&match_index) = match_indices.peek() {
5100 if match_index >= range.start {
5101 break;
5102 }
5103 match_indices.next();
5104 let end_index = char_ix_after(match_index, text);
5105 let mut match_style = default_style;
5106 match_style.font_properties.weight(fonts::Weight::BOLD);
5107 result.push((match_index..end_index, match_style));
5108 }
5109
5110 if range.start == usize::MAX {
5111 break;
5112 }
5113
5114 // Add highlights for any fuzzy match characters within the
5115 // syntax highlight range.
5116 let mut offset = range.start;
5117 while let Some(&match_index) = match_indices.peek() {
5118 if match_index >= range.end {
5119 break;
5120 }
5121
5122 match_indices.next();
5123 if match_index > offset {
5124 result.push((offset..match_index, syntax_highlight));
5125 }
5126
5127 let mut end_index = char_ix_after(match_index, text);
5128 while let Some(&next_match_index) = match_indices.peek() {
5129 if next_match_index == end_index && next_match_index < range.end {
5130 end_index = char_ix_after(next_match_index, text);
5131 match_indices.next();
5132 } else {
5133 break;
5134 }
5135 }
5136
5137 let mut match_style = syntax_highlight;
5138 match_style.font_properties.weight(fonts::Weight::BOLD);
5139 result.push((match_index..end_index, match_style));
5140 offset = end_index;
5141 }
5142
5143 if offset < range.end {
5144 result.push((offset..range.end, syntax_highlight));
5145 }
5146 }
5147
5148 fn char_ix_after(ix: usize, text: &str) -> usize {
5149 ix + text[ix..].chars().next().unwrap().len_utf8()
5150 }
5151
5152 result
5153}
5154
5155fn styled_runs_for_completion_label<'a>(
5156 label: &'a CompletionLabel,
5157 default_color: Color,
5158 syntax_theme: &'a theme::SyntaxTheme,
5159) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5160 const MUTED_OPACITY: usize = 165;
5161
5162 let mut muted_default_style = HighlightStyle {
5163 color: default_color,
5164 ..Default::default()
5165 };
5166 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5167
5168 let mut prev_end = label.filter_range.end;
5169 label
5170 .runs
5171 .iter()
5172 .enumerate()
5173 .flat_map(move |(ix, (range, highlight_id))| {
5174 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5175 style
5176 } else {
5177 return Default::default();
5178 };
5179 let mut muted_style = style.clone();
5180 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5181
5182 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5183 if range.start >= label.filter_range.end {
5184 if range.start > prev_end {
5185 runs.push((prev_end..range.start, muted_default_style));
5186 }
5187 runs.push((range.clone(), muted_style));
5188 } else if range.end <= label.filter_range.end {
5189 runs.push((range.clone(), style));
5190 } else {
5191 runs.push((range.start..label.filter_range.end, style));
5192 runs.push((label.filter_range.end..range.end, muted_style));
5193 }
5194 prev_end = cmp::max(prev_end, range.end);
5195
5196 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5197 runs.push((prev_end..label.text.len(), muted_default_style));
5198 }
5199
5200 runs
5201 })
5202}
5203
5204#[cfg(test)]
5205mod tests {
5206 use super::*;
5207 use language::{FakeFile, LanguageConfig};
5208 use lsp::FakeLanguageServer;
5209 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
5210 use text::Point;
5211 use unindent::Unindent;
5212 use util::test::sample_text;
5213
5214 #[gpui::test]
5215 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5216 let mut now = Instant::now();
5217 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5218 let group_interval = buffer.read(cx).transaction_group_interval();
5219 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5220 let settings = EditorSettings::test(cx);
5221 let (_, editor) = cx.add_window(Default::default(), |cx| {
5222 build_editor(buffer.clone(), settings, cx)
5223 });
5224
5225 editor.update(cx, |editor, cx| {
5226 editor.start_transaction_at(now, cx);
5227 editor.select_ranges([2..4], None, cx);
5228 editor.insert("cd", cx);
5229 editor.end_transaction_at(now, cx);
5230 assert_eq!(editor.text(cx), "12cd56");
5231 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5232
5233 editor.start_transaction_at(now, cx);
5234 editor.select_ranges([4..5], None, cx);
5235 editor.insert("e", cx);
5236 editor.end_transaction_at(now, cx);
5237 assert_eq!(editor.text(cx), "12cde6");
5238 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5239
5240 now += group_interval + Duration::from_millis(1);
5241 editor.select_ranges([2..2], None, cx);
5242
5243 // Simulate an edit in another editor
5244 buffer.update(cx, |buffer, cx| {
5245 buffer.start_transaction_at(now, cx);
5246 buffer.edit([0..1], "a", cx);
5247 buffer.edit([1..1], "b", cx);
5248 buffer.end_transaction_at(now, cx);
5249 });
5250
5251 assert_eq!(editor.text(cx), "ab2cde6");
5252 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5253
5254 // Last transaction happened past the group interval in a different editor.
5255 // Undo it individually and don't restore selections.
5256 editor.undo(&Undo, cx);
5257 assert_eq!(editor.text(cx), "12cde6");
5258 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5259
5260 // First two transactions happened within the group interval in this editor.
5261 // Undo them together and restore selections.
5262 editor.undo(&Undo, cx);
5263 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5264 assert_eq!(editor.text(cx), "123456");
5265 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5266
5267 // Redo the first two transactions together.
5268 editor.redo(&Redo, cx);
5269 assert_eq!(editor.text(cx), "12cde6");
5270 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5271
5272 // Redo the last transaction on its own.
5273 editor.redo(&Redo, cx);
5274 assert_eq!(editor.text(cx), "ab2cde6");
5275 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5276
5277 // Test empty transactions.
5278 editor.start_transaction_at(now, cx);
5279 editor.end_transaction_at(now, cx);
5280 editor.undo(&Undo, cx);
5281 assert_eq!(editor.text(cx), "12cde6");
5282 });
5283 }
5284
5285 #[gpui::test]
5286 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5287 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5288 let settings = EditorSettings::test(cx);
5289 let (_, editor) =
5290 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5291
5292 editor.update(cx, |view, cx| {
5293 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5294 });
5295
5296 assert_eq!(
5297 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5298 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5299 );
5300
5301 editor.update(cx, |view, cx| {
5302 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5303 });
5304
5305 assert_eq!(
5306 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5307 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5308 );
5309
5310 editor.update(cx, |view, cx| {
5311 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5312 });
5313
5314 assert_eq!(
5315 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5316 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5317 );
5318
5319 editor.update(cx, |view, cx| {
5320 view.end_selection(cx);
5321 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5322 });
5323
5324 assert_eq!(
5325 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5326 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5327 );
5328
5329 editor.update(cx, |view, cx| {
5330 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5331 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5332 });
5333
5334 assert_eq!(
5335 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5336 [
5337 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5338 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5339 ]
5340 );
5341
5342 editor.update(cx, |view, cx| {
5343 view.end_selection(cx);
5344 });
5345
5346 assert_eq!(
5347 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5348 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5349 );
5350 }
5351
5352 #[gpui::test]
5353 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5354 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5355 let settings = EditorSettings::test(cx);
5356 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5357
5358 view.update(cx, |view, cx| {
5359 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5360 assert_eq!(
5361 view.selected_display_ranges(cx),
5362 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5363 );
5364 });
5365
5366 view.update(cx, |view, cx| {
5367 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5368 assert_eq!(
5369 view.selected_display_ranges(cx),
5370 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5371 );
5372 });
5373
5374 view.update(cx, |view, cx| {
5375 view.cancel(&Cancel, cx);
5376 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5377 assert_eq!(
5378 view.selected_display_ranges(cx),
5379 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5380 );
5381 });
5382 }
5383
5384 #[gpui::test]
5385 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5386 cx.add_window(Default::default(), |cx| {
5387 use workspace::ItemView;
5388 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5389 let settings = EditorSettings::test(&cx);
5390 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5391 let mut editor = build_editor(buffer.clone(), settings, cx);
5392 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5393
5394 // Move the cursor a small distance.
5395 // Nothing is added to the navigation history.
5396 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5397 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5398 assert!(nav_history.borrow_mut().pop_backward().is_none());
5399
5400 // Move the cursor a large distance.
5401 // The history can jump back to the previous position.
5402 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5403 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5404 editor.navigate(nav_entry.data.unwrap(), cx);
5405 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5406 assert_eq!(
5407 editor.selected_display_ranges(cx),
5408 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5409 );
5410
5411 // Move the cursor a small distance via the mouse.
5412 // Nothing is added to the navigation history.
5413 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5414 editor.end_selection(cx);
5415 assert_eq!(
5416 editor.selected_display_ranges(cx),
5417 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5418 );
5419 assert!(nav_history.borrow_mut().pop_backward().is_none());
5420
5421 // Move the cursor a large distance via the mouse.
5422 // The history can jump back to the previous position.
5423 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5424 editor.end_selection(cx);
5425 assert_eq!(
5426 editor.selected_display_ranges(cx),
5427 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5428 );
5429 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5430 editor.navigate(nav_entry.data.unwrap(), cx);
5431 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5432 assert_eq!(
5433 editor.selected_display_ranges(cx),
5434 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5435 );
5436
5437 editor
5438 });
5439 }
5440
5441 #[gpui::test]
5442 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5443 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5444 let settings = EditorSettings::test(cx);
5445 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5446
5447 view.update(cx, |view, cx| {
5448 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5449 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5450 view.end_selection(cx);
5451
5452 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5453 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5454 view.end_selection(cx);
5455 assert_eq!(
5456 view.selected_display_ranges(cx),
5457 [
5458 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5459 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5460 ]
5461 );
5462 });
5463
5464 view.update(cx, |view, cx| {
5465 view.cancel(&Cancel, cx);
5466 assert_eq!(
5467 view.selected_display_ranges(cx),
5468 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5469 );
5470 });
5471
5472 view.update(cx, |view, cx| {
5473 view.cancel(&Cancel, cx);
5474 assert_eq!(
5475 view.selected_display_ranges(cx),
5476 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5477 );
5478 });
5479 }
5480
5481 #[gpui::test]
5482 fn test_fold(cx: &mut gpui::MutableAppContext) {
5483 let buffer = MultiBuffer::build_simple(
5484 &"
5485 impl Foo {
5486 // Hello!
5487
5488 fn a() {
5489 1
5490 }
5491
5492 fn b() {
5493 2
5494 }
5495
5496 fn c() {
5497 3
5498 }
5499 }
5500 "
5501 .unindent(),
5502 cx,
5503 );
5504 let settings = EditorSettings::test(&cx);
5505 let (_, view) = cx.add_window(Default::default(), |cx| {
5506 build_editor(buffer.clone(), settings, cx)
5507 });
5508
5509 view.update(cx, |view, cx| {
5510 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5511 view.fold(&Fold, cx);
5512 assert_eq!(
5513 view.display_text(cx),
5514 "
5515 impl Foo {
5516 // Hello!
5517
5518 fn a() {
5519 1
5520 }
5521
5522 fn b() {…
5523 }
5524
5525 fn c() {…
5526 }
5527 }
5528 "
5529 .unindent(),
5530 );
5531
5532 view.fold(&Fold, cx);
5533 assert_eq!(
5534 view.display_text(cx),
5535 "
5536 impl Foo {…
5537 }
5538 "
5539 .unindent(),
5540 );
5541
5542 view.unfold(&Unfold, cx);
5543 assert_eq!(
5544 view.display_text(cx),
5545 "
5546 impl Foo {
5547 // Hello!
5548
5549 fn a() {
5550 1
5551 }
5552
5553 fn b() {…
5554 }
5555
5556 fn c() {…
5557 }
5558 }
5559 "
5560 .unindent(),
5561 );
5562
5563 view.unfold(&Unfold, cx);
5564 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5565 });
5566 }
5567
5568 #[gpui::test]
5569 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5570 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5571 let settings = EditorSettings::test(&cx);
5572 let (_, view) = cx.add_window(Default::default(), |cx| {
5573 build_editor(buffer.clone(), settings, cx)
5574 });
5575
5576 buffer.update(cx, |buffer, cx| {
5577 buffer.edit(
5578 vec![
5579 Point::new(1, 0)..Point::new(1, 0),
5580 Point::new(1, 1)..Point::new(1, 1),
5581 ],
5582 "\t",
5583 cx,
5584 );
5585 });
5586
5587 view.update(cx, |view, cx| {
5588 assert_eq!(
5589 view.selected_display_ranges(cx),
5590 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5591 );
5592
5593 view.move_down(&MoveDown, cx);
5594 assert_eq!(
5595 view.selected_display_ranges(cx),
5596 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5597 );
5598
5599 view.move_right(&MoveRight, cx);
5600 assert_eq!(
5601 view.selected_display_ranges(cx),
5602 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5603 );
5604
5605 view.move_left(&MoveLeft, cx);
5606 assert_eq!(
5607 view.selected_display_ranges(cx),
5608 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5609 );
5610
5611 view.move_up(&MoveUp, cx);
5612 assert_eq!(
5613 view.selected_display_ranges(cx),
5614 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5615 );
5616
5617 view.move_to_end(&MoveToEnd, cx);
5618 assert_eq!(
5619 view.selected_display_ranges(cx),
5620 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5621 );
5622
5623 view.move_to_beginning(&MoveToBeginning, cx);
5624 assert_eq!(
5625 view.selected_display_ranges(cx),
5626 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5627 );
5628
5629 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5630 view.select_to_beginning(&SelectToBeginning, cx);
5631 assert_eq!(
5632 view.selected_display_ranges(cx),
5633 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5634 );
5635
5636 view.select_to_end(&SelectToEnd, cx);
5637 assert_eq!(
5638 view.selected_display_ranges(cx),
5639 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5640 );
5641 });
5642 }
5643
5644 #[gpui::test]
5645 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5646 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5647 let settings = EditorSettings::test(&cx);
5648 let (_, view) = cx.add_window(Default::default(), |cx| {
5649 build_editor(buffer.clone(), settings, cx)
5650 });
5651
5652 assert_eq!('ⓐ'.len_utf8(), 3);
5653 assert_eq!('α'.len_utf8(), 2);
5654
5655 view.update(cx, |view, cx| {
5656 view.fold_ranges(
5657 vec![
5658 Point::new(0, 6)..Point::new(0, 12),
5659 Point::new(1, 2)..Point::new(1, 4),
5660 Point::new(2, 4)..Point::new(2, 8),
5661 ],
5662 cx,
5663 );
5664 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5665
5666 view.move_right(&MoveRight, cx);
5667 assert_eq!(
5668 view.selected_display_ranges(cx),
5669 &[empty_range(0, "ⓐ".len())]
5670 );
5671 view.move_right(&MoveRight, cx);
5672 assert_eq!(
5673 view.selected_display_ranges(cx),
5674 &[empty_range(0, "ⓐⓑ".len())]
5675 );
5676 view.move_right(&MoveRight, cx);
5677 assert_eq!(
5678 view.selected_display_ranges(cx),
5679 &[empty_range(0, "ⓐⓑ…".len())]
5680 );
5681
5682 view.move_down(&MoveDown, cx);
5683 assert_eq!(
5684 view.selected_display_ranges(cx),
5685 &[empty_range(1, "ab…".len())]
5686 );
5687 view.move_left(&MoveLeft, cx);
5688 assert_eq!(
5689 view.selected_display_ranges(cx),
5690 &[empty_range(1, "ab".len())]
5691 );
5692 view.move_left(&MoveLeft, cx);
5693 assert_eq!(
5694 view.selected_display_ranges(cx),
5695 &[empty_range(1, "a".len())]
5696 );
5697
5698 view.move_down(&MoveDown, cx);
5699 assert_eq!(
5700 view.selected_display_ranges(cx),
5701 &[empty_range(2, "α".len())]
5702 );
5703 view.move_right(&MoveRight, cx);
5704 assert_eq!(
5705 view.selected_display_ranges(cx),
5706 &[empty_range(2, "αβ".len())]
5707 );
5708 view.move_right(&MoveRight, cx);
5709 assert_eq!(
5710 view.selected_display_ranges(cx),
5711 &[empty_range(2, "αβ…".len())]
5712 );
5713 view.move_right(&MoveRight, cx);
5714 assert_eq!(
5715 view.selected_display_ranges(cx),
5716 &[empty_range(2, "αβ…ε".len())]
5717 );
5718
5719 view.move_up(&MoveUp, cx);
5720 assert_eq!(
5721 view.selected_display_ranges(cx),
5722 &[empty_range(1, "ab…e".len())]
5723 );
5724 view.move_up(&MoveUp, cx);
5725 assert_eq!(
5726 view.selected_display_ranges(cx),
5727 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5728 );
5729 view.move_left(&MoveLeft, cx);
5730 assert_eq!(
5731 view.selected_display_ranges(cx),
5732 &[empty_range(0, "ⓐⓑ…".len())]
5733 );
5734 view.move_left(&MoveLeft, cx);
5735 assert_eq!(
5736 view.selected_display_ranges(cx),
5737 &[empty_range(0, "ⓐⓑ".len())]
5738 );
5739 view.move_left(&MoveLeft, cx);
5740 assert_eq!(
5741 view.selected_display_ranges(cx),
5742 &[empty_range(0, "ⓐ".len())]
5743 );
5744 });
5745 }
5746
5747 #[gpui::test]
5748 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5749 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5750 let settings = EditorSettings::test(&cx);
5751 let (_, view) = cx.add_window(Default::default(), |cx| {
5752 build_editor(buffer.clone(), settings, cx)
5753 });
5754 view.update(cx, |view, cx| {
5755 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5756 view.move_down(&MoveDown, cx);
5757 assert_eq!(
5758 view.selected_display_ranges(cx),
5759 &[empty_range(1, "abcd".len())]
5760 );
5761
5762 view.move_down(&MoveDown, cx);
5763 assert_eq!(
5764 view.selected_display_ranges(cx),
5765 &[empty_range(2, "αβγ".len())]
5766 );
5767
5768 view.move_down(&MoveDown, cx);
5769 assert_eq!(
5770 view.selected_display_ranges(cx),
5771 &[empty_range(3, "abcd".len())]
5772 );
5773
5774 view.move_down(&MoveDown, cx);
5775 assert_eq!(
5776 view.selected_display_ranges(cx),
5777 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5778 );
5779
5780 view.move_up(&MoveUp, cx);
5781 assert_eq!(
5782 view.selected_display_ranges(cx),
5783 &[empty_range(3, "abcd".len())]
5784 );
5785
5786 view.move_up(&MoveUp, cx);
5787 assert_eq!(
5788 view.selected_display_ranges(cx),
5789 &[empty_range(2, "αβγ".len())]
5790 );
5791 });
5792 }
5793
5794 #[gpui::test]
5795 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5796 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5797 let settings = EditorSettings::test(&cx);
5798 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5799 view.update(cx, |view, cx| {
5800 view.select_display_ranges(
5801 &[
5802 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5803 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5804 ],
5805 cx,
5806 );
5807 });
5808
5809 view.update(cx, |view, cx| {
5810 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5811 assert_eq!(
5812 view.selected_display_ranges(cx),
5813 &[
5814 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5815 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5816 ]
5817 );
5818 });
5819
5820 view.update(cx, |view, cx| {
5821 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5822 assert_eq!(
5823 view.selected_display_ranges(cx),
5824 &[
5825 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5826 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5827 ]
5828 );
5829 });
5830
5831 view.update(cx, |view, cx| {
5832 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5833 assert_eq!(
5834 view.selected_display_ranges(cx),
5835 &[
5836 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5837 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5838 ]
5839 );
5840 });
5841
5842 view.update(cx, |view, cx| {
5843 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5844 assert_eq!(
5845 view.selected_display_ranges(cx),
5846 &[
5847 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5848 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5849 ]
5850 );
5851 });
5852
5853 // Moving to the end of line again is a no-op.
5854 view.update(cx, |view, cx| {
5855 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5856 assert_eq!(
5857 view.selected_display_ranges(cx),
5858 &[
5859 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5860 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5861 ]
5862 );
5863 });
5864
5865 view.update(cx, |view, cx| {
5866 view.move_left(&MoveLeft, cx);
5867 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5868 assert_eq!(
5869 view.selected_display_ranges(cx),
5870 &[
5871 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5872 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5873 ]
5874 );
5875 });
5876
5877 view.update(cx, |view, cx| {
5878 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5879 assert_eq!(
5880 view.selected_display_ranges(cx),
5881 &[
5882 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5883 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5884 ]
5885 );
5886 });
5887
5888 view.update(cx, |view, cx| {
5889 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5890 assert_eq!(
5891 view.selected_display_ranges(cx),
5892 &[
5893 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5894 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5895 ]
5896 );
5897 });
5898
5899 view.update(cx, |view, cx| {
5900 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5901 assert_eq!(
5902 view.selected_display_ranges(cx),
5903 &[
5904 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5905 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5906 ]
5907 );
5908 });
5909
5910 view.update(cx, |view, cx| {
5911 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5912 assert_eq!(view.display_text(cx), "ab\n de");
5913 assert_eq!(
5914 view.selected_display_ranges(cx),
5915 &[
5916 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5917 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5918 ]
5919 );
5920 });
5921
5922 view.update(cx, |view, cx| {
5923 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5924 assert_eq!(view.display_text(cx), "\n");
5925 assert_eq!(
5926 view.selected_display_ranges(cx),
5927 &[
5928 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5929 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5930 ]
5931 );
5932 });
5933 }
5934
5935 #[gpui::test]
5936 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5937 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5938 let settings = EditorSettings::test(&cx);
5939 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5940 view.update(cx, |view, cx| {
5941 view.select_display_ranges(
5942 &[
5943 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5944 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5945 ],
5946 cx,
5947 );
5948 });
5949
5950 view.update(cx, |view, cx| {
5951 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5952 assert_eq!(
5953 view.selected_display_ranges(cx),
5954 &[
5955 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
5956 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
5957 ]
5958 );
5959 });
5960
5961 view.update(cx, |view, cx| {
5962 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5963 assert_eq!(
5964 view.selected_display_ranges(cx),
5965 &[
5966 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
5967 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
5968 ]
5969 );
5970 });
5971
5972 view.update(cx, |view, cx| {
5973 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5974 assert_eq!(
5975 view.selected_display_ranges(cx),
5976 &[
5977 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
5978 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5979 ]
5980 );
5981 });
5982
5983 view.update(cx, |view, cx| {
5984 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5985 assert_eq!(
5986 view.selected_display_ranges(cx),
5987 &[
5988 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5989 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5990 ]
5991 );
5992 });
5993
5994 view.update(cx, |view, cx| {
5995 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
5996 assert_eq!(
5997 view.selected_display_ranges(cx),
5998 &[
5999 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6000 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6001 ]
6002 );
6003 });
6004
6005 view.update(cx, |view, cx| {
6006 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6007 assert_eq!(
6008 view.selected_display_ranges(cx),
6009 &[
6010 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6011 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6012 ]
6013 );
6014 });
6015
6016 view.update(cx, |view, cx| {
6017 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6018 assert_eq!(
6019 view.selected_display_ranges(cx),
6020 &[
6021 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6022 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6023 ]
6024 );
6025 });
6026
6027 view.update(cx, |view, cx| {
6028 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6029 assert_eq!(
6030 view.selected_display_ranges(cx),
6031 &[
6032 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6033 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6034 ]
6035 );
6036 });
6037
6038 view.update(cx, |view, cx| {
6039 view.move_right(&MoveRight, cx);
6040 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6041 assert_eq!(
6042 view.selected_display_ranges(cx),
6043 &[
6044 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6045 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6046 ]
6047 );
6048 });
6049
6050 view.update(cx, |view, cx| {
6051 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6052 assert_eq!(
6053 view.selected_display_ranges(cx),
6054 &[
6055 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6056 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6057 ]
6058 );
6059 });
6060
6061 view.update(cx, |view, cx| {
6062 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6063 assert_eq!(
6064 view.selected_display_ranges(cx),
6065 &[
6066 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6067 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6068 ]
6069 );
6070 });
6071 }
6072
6073 #[gpui::test]
6074 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6075 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6076 let settings = EditorSettings::test(&cx);
6077 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6078
6079 view.update(cx, |view, cx| {
6080 view.set_wrap_width(Some(140.), cx);
6081 assert_eq!(
6082 view.display_text(cx),
6083 "use one::{\n two::three::\n four::five\n};"
6084 );
6085
6086 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6087
6088 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6089 assert_eq!(
6090 view.selected_display_ranges(cx),
6091 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6092 );
6093
6094 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6095 assert_eq!(
6096 view.selected_display_ranges(cx),
6097 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6098 );
6099
6100 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6101 assert_eq!(
6102 view.selected_display_ranges(cx),
6103 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6104 );
6105
6106 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6107 assert_eq!(
6108 view.selected_display_ranges(cx),
6109 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6110 );
6111
6112 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6113 assert_eq!(
6114 view.selected_display_ranges(cx),
6115 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6116 );
6117
6118 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6119 assert_eq!(
6120 view.selected_display_ranges(cx),
6121 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6122 );
6123 });
6124 }
6125
6126 #[gpui::test]
6127 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6128 let buffer = MultiBuffer::build_simple("one two three four", cx);
6129 let settings = EditorSettings::test(&cx);
6130 let (_, view) = cx.add_window(Default::default(), |cx| {
6131 build_editor(buffer.clone(), settings, cx)
6132 });
6133
6134 view.update(cx, |view, cx| {
6135 view.select_display_ranges(
6136 &[
6137 // an empty selection - the preceding word fragment is deleted
6138 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6139 // characters selected - they are deleted
6140 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6141 ],
6142 cx,
6143 );
6144 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6145 });
6146
6147 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6148
6149 view.update(cx, |view, cx| {
6150 view.select_display_ranges(
6151 &[
6152 // an empty selection - the following word fragment is deleted
6153 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6154 // characters selected - they are deleted
6155 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6156 ],
6157 cx,
6158 );
6159 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6160 });
6161
6162 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6163 }
6164
6165 #[gpui::test]
6166 fn test_newline(cx: &mut gpui::MutableAppContext) {
6167 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6168 let settings = EditorSettings::test(&cx);
6169 let (_, view) = cx.add_window(Default::default(), |cx| {
6170 build_editor(buffer.clone(), settings, cx)
6171 });
6172
6173 view.update(cx, |view, cx| {
6174 view.select_display_ranges(
6175 &[
6176 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6177 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6178 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6179 ],
6180 cx,
6181 );
6182
6183 view.newline(&Newline, cx);
6184 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6185 });
6186 }
6187
6188 #[gpui::test]
6189 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6190 let buffer = MultiBuffer::build_simple(
6191 "
6192 a
6193 b(
6194 X
6195 )
6196 c(
6197 X
6198 )
6199 "
6200 .unindent()
6201 .as_str(),
6202 cx,
6203 );
6204
6205 let settings = EditorSettings::test(&cx);
6206 let (_, editor) = cx.add_window(Default::default(), |cx| {
6207 let mut editor = build_editor(buffer.clone(), settings, cx);
6208 editor.select_ranges(
6209 [
6210 Point::new(2, 4)..Point::new(2, 5),
6211 Point::new(5, 4)..Point::new(5, 5),
6212 ],
6213 None,
6214 cx,
6215 );
6216 editor
6217 });
6218
6219 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6220 buffer.update(cx, |buffer, cx| {
6221 buffer.edit(
6222 [
6223 Point::new(1, 2)..Point::new(3, 0),
6224 Point::new(4, 2)..Point::new(6, 0),
6225 ],
6226 "",
6227 cx,
6228 );
6229 assert_eq!(
6230 buffer.read(cx).text(),
6231 "
6232 a
6233 b()
6234 c()
6235 "
6236 .unindent()
6237 );
6238 });
6239
6240 editor.update(cx, |editor, cx| {
6241 assert_eq!(
6242 editor.selected_ranges(cx),
6243 &[
6244 Point::new(1, 2)..Point::new(1, 2),
6245 Point::new(2, 2)..Point::new(2, 2),
6246 ],
6247 );
6248
6249 editor.newline(&Newline, cx);
6250 assert_eq!(
6251 editor.text(cx),
6252 "
6253 a
6254 b(
6255 )
6256 c(
6257 )
6258 "
6259 .unindent()
6260 );
6261
6262 // The selections are moved after the inserted newlines
6263 assert_eq!(
6264 editor.selected_ranges(cx),
6265 &[
6266 Point::new(2, 0)..Point::new(2, 0),
6267 Point::new(4, 0)..Point::new(4, 0),
6268 ],
6269 );
6270 });
6271 }
6272
6273 #[gpui::test]
6274 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6275 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6276
6277 let settings = EditorSettings::test(&cx);
6278 let (_, editor) = cx.add_window(Default::default(), |cx| {
6279 let mut editor = build_editor(buffer.clone(), settings, cx);
6280 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6281 editor
6282 });
6283
6284 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6285 buffer.update(cx, |buffer, cx| {
6286 buffer.edit([2..5, 10..13, 18..21], "", cx);
6287 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6288 });
6289
6290 editor.update(cx, |editor, cx| {
6291 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6292
6293 editor.insert("Z", cx);
6294 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6295
6296 // The selections are moved after the inserted characters
6297 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6298 });
6299 }
6300
6301 #[gpui::test]
6302 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6303 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6304 let settings = EditorSettings::test(&cx);
6305 let (_, view) = cx.add_window(Default::default(), |cx| {
6306 build_editor(buffer.clone(), settings, cx)
6307 });
6308
6309 view.update(cx, |view, cx| {
6310 // two selections on the same line
6311 view.select_display_ranges(
6312 &[
6313 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6314 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6315 ],
6316 cx,
6317 );
6318
6319 // indent from mid-tabstop to full tabstop
6320 view.tab(&Tab, cx);
6321 assert_eq!(view.text(cx), " one two\nthree\n four");
6322 assert_eq!(
6323 view.selected_display_ranges(cx),
6324 &[
6325 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6326 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6327 ]
6328 );
6329
6330 // outdent from 1 tabstop to 0 tabstops
6331 view.outdent(&Outdent, cx);
6332 assert_eq!(view.text(cx), "one two\nthree\n four");
6333 assert_eq!(
6334 view.selected_display_ranges(cx),
6335 &[
6336 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6337 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6338 ]
6339 );
6340
6341 // select across line ending
6342 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6343
6344 // indent and outdent affect only the preceding line
6345 view.tab(&Tab, cx);
6346 assert_eq!(view.text(cx), "one two\n three\n four");
6347 assert_eq!(
6348 view.selected_display_ranges(cx),
6349 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6350 );
6351 view.outdent(&Outdent, cx);
6352 assert_eq!(view.text(cx), "one two\nthree\n four");
6353 assert_eq!(
6354 view.selected_display_ranges(cx),
6355 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6356 );
6357
6358 // Ensure that indenting/outdenting works when the cursor is at column 0.
6359 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6360 view.tab(&Tab, cx);
6361 assert_eq!(view.text(cx), "one two\n three\n four");
6362 assert_eq!(
6363 view.selected_display_ranges(cx),
6364 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6365 );
6366
6367 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6368 view.outdent(&Outdent, cx);
6369 assert_eq!(view.text(cx), "one two\nthree\n four");
6370 assert_eq!(
6371 view.selected_display_ranges(cx),
6372 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6373 );
6374 });
6375 }
6376
6377 #[gpui::test]
6378 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6379 let buffer =
6380 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6381 let settings = EditorSettings::test(&cx);
6382 let (_, view) = cx.add_window(Default::default(), |cx| {
6383 build_editor(buffer.clone(), settings, cx)
6384 });
6385
6386 view.update(cx, |view, cx| {
6387 view.select_display_ranges(
6388 &[
6389 // an empty selection - the preceding character is deleted
6390 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6391 // one character selected - it is deleted
6392 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6393 // a line suffix selected - it is deleted
6394 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6395 ],
6396 cx,
6397 );
6398 view.backspace(&Backspace, cx);
6399 });
6400
6401 assert_eq!(
6402 buffer.read(cx).read(cx).text(),
6403 "oe two three\nfou five six\nseven ten\n"
6404 );
6405 }
6406
6407 #[gpui::test]
6408 fn test_delete(cx: &mut gpui::MutableAppContext) {
6409 let buffer =
6410 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6411 let settings = EditorSettings::test(&cx);
6412 let (_, view) = cx.add_window(Default::default(), |cx| {
6413 build_editor(buffer.clone(), settings, cx)
6414 });
6415
6416 view.update(cx, |view, cx| {
6417 view.select_display_ranges(
6418 &[
6419 // an empty selection - the following character is deleted
6420 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6421 // one character selected - it is deleted
6422 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6423 // a line suffix selected - it is deleted
6424 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6425 ],
6426 cx,
6427 );
6428 view.delete(&Delete, cx);
6429 });
6430
6431 assert_eq!(
6432 buffer.read(cx).read(cx).text(),
6433 "on two three\nfou five six\nseven ten\n"
6434 );
6435 }
6436
6437 #[gpui::test]
6438 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6439 let settings = EditorSettings::test(&cx);
6440 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6441 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6442 view.update(cx, |view, cx| {
6443 view.select_display_ranges(
6444 &[
6445 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6446 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6447 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6448 ],
6449 cx,
6450 );
6451 view.delete_line(&DeleteLine, cx);
6452 assert_eq!(view.display_text(cx), "ghi");
6453 assert_eq!(
6454 view.selected_display_ranges(cx),
6455 vec![
6456 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6457 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6458 ]
6459 );
6460 });
6461
6462 let settings = EditorSettings::test(&cx);
6463 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6464 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6465 view.update(cx, |view, cx| {
6466 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6467 view.delete_line(&DeleteLine, cx);
6468 assert_eq!(view.display_text(cx), "ghi\n");
6469 assert_eq!(
6470 view.selected_display_ranges(cx),
6471 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6472 );
6473 });
6474 }
6475
6476 #[gpui::test]
6477 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6478 let settings = EditorSettings::test(&cx);
6479 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6480 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6481 view.update(cx, |view, cx| {
6482 view.select_display_ranges(
6483 &[
6484 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6485 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6486 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6487 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6488 ],
6489 cx,
6490 );
6491 view.duplicate_line(&DuplicateLine, cx);
6492 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6493 assert_eq!(
6494 view.selected_display_ranges(cx),
6495 vec![
6496 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6497 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6498 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6499 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6500 ]
6501 );
6502 });
6503
6504 let settings = EditorSettings::test(&cx);
6505 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6506 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6507 view.update(cx, |view, cx| {
6508 view.select_display_ranges(
6509 &[
6510 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6511 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6512 ],
6513 cx,
6514 );
6515 view.duplicate_line(&DuplicateLine, cx);
6516 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6517 assert_eq!(
6518 view.selected_display_ranges(cx),
6519 vec![
6520 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6521 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6522 ]
6523 );
6524 });
6525 }
6526
6527 #[gpui::test]
6528 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6529 let settings = EditorSettings::test(&cx);
6530 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6531 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6532 view.update(cx, |view, cx| {
6533 view.fold_ranges(
6534 vec![
6535 Point::new(0, 2)..Point::new(1, 2),
6536 Point::new(2, 3)..Point::new(4, 1),
6537 Point::new(7, 0)..Point::new(8, 4),
6538 ],
6539 cx,
6540 );
6541 view.select_display_ranges(
6542 &[
6543 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6544 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6545 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6546 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6547 ],
6548 cx,
6549 );
6550 assert_eq!(
6551 view.display_text(cx),
6552 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6553 );
6554
6555 view.move_line_up(&MoveLineUp, cx);
6556 assert_eq!(
6557 view.display_text(cx),
6558 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6559 );
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 vec![
6563 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6564 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6565 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6566 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6567 ]
6568 );
6569 });
6570
6571 view.update(cx, |view, cx| {
6572 view.move_line_down(&MoveLineDown, cx);
6573 assert_eq!(
6574 view.display_text(cx),
6575 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6576 );
6577 assert_eq!(
6578 view.selected_display_ranges(cx),
6579 vec![
6580 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6581 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6582 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6583 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6584 ]
6585 );
6586 });
6587
6588 view.update(cx, |view, cx| {
6589 view.move_line_down(&MoveLineDown, cx);
6590 assert_eq!(
6591 view.display_text(cx),
6592 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6593 );
6594 assert_eq!(
6595 view.selected_display_ranges(cx),
6596 vec![
6597 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6598 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6599 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6600 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6601 ]
6602 );
6603 });
6604
6605 view.update(cx, |view, cx| {
6606 view.move_line_up(&MoveLineUp, cx);
6607 assert_eq!(
6608 view.display_text(cx),
6609 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6610 );
6611 assert_eq!(
6612 view.selected_display_ranges(cx),
6613 vec![
6614 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6615 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6616 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6617 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6618 ]
6619 );
6620 });
6621 }
6622
6623 #[gpui::test]
6624 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6625 let settings = EditorSettings::test(&cx);
6626 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6627 let snapshot = buffer.read(cx).snapshot(cx);
6628 let (_, editor) =
6629 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6630 editor.update(cx, |editor, cx| {
6631 editor.insert_blocks(
6632 [BlockProperties {
6633 position: snapshot.anchor_after(Point::new(2, 0)),
6634 disposition: BlockDisposition::Below,
6635 height: 1,
6636 render: Arc::new(|_| Empty::new().boxed()),
6637 }],
6638 cx,
6639 );
6640 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6641 editor.move_line_down(&MoveLineDown, cx);
6642 });
6643 }
6644
6645 #[gpui::test]
6646 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6647 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6648 let settings = EditorSettings::test(&cx);
6649 let view = cx
6650 .add_window(Default::default(), |cx| {
6651 build_editor(buffer.clone(), settings, cx)
6652 })
6653 .1;
6654
6655 // Cut with three selections. Clipboard text is divided into three slices.
6656 view.update(cx, |view, cx| {
6657 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6658 view.cut(&Cut, cx);
6659 assert_eq!(view.display_text(cx), "two four six ");
6660 });
6661
6662 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6663 view.update(cx, |view, cx| {
6664 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6665 view.paste(&Paste, cx);
6666 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6667 assert_eq!(
6668 view.selected_display_ranges(cx),
6669 &[
6670 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6671 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6672 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6673 ]
6674 );
6675 });
6676
6677 // Paste again but with only two cursors. Since the number of cursors doesn't
6678 // match the number of slices in the clipboard, the entire clipboard text
6679 // is pasted at each cursor.
6680 view.update(cx, |view, cx| {
6681 view.select_ranges(vec![0..0, 31..31], None, cx);
6682 view.handle_input(&Input("( ".into()), cx);
6683 view.paste(&Paste, cx);
6684 view.handle_input(&Input(") ".into()), cx);
6685 assert_eq!(
6686 view.display_text(cx),
6687 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6688 );
6689 });
6690
6691 view.update(cx, |view, cx| {
6692 view.select_ranges(vec![0..0], None, cx);
6693 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6694 assert_eq!(
6695 view.display_text(cx),
6696 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6697 );
6698 });
6699
6700 // Cut with three selections, one of which is full-line.
6701 view.update(cx, |view, cx| {
6702 view.select_display_ranges(
6703 &[
6704 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6705 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6706 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6707 ],
6708 cx,
6709 );
6710 view.cut(&Cut, cx);
6711 assert_eq!(
6712 view.display_text(cx),
6713 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6714 );
6715 });
6716
6717 // Paste with three selections, noticing how the copied selection that was full-line
6718 // gets inserted before the second cursor.
6719 view.update(cx, |view, cx| {
6720 view.select_display_ranges(
6721 &[
6722 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6723 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6724 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6725 ],
6726 cx,
6727 );
6728 view.paste(&Paste, cx);
6729 assert_eq!(
6730 view.display_text(cx),
6731 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6732 );
6733 assert_eq!(
6734 view.selected_display_ranges(cx),
6735 &[
6736 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6737 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6738 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6739 ]
6740 );
6741 });
6742
6743 // Copy with a single cursor only, which writes the whole line into the clipboard.
6744 view.update(cx, |view, cx| {
6745 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6746 view.copy(&Copy, cx);
6747 });
6748
6749 // Paste with three selections, noticing how the copied full-line selection is inserted
6750 // before the empty selections but replaces the selection that is non-empty.
6751 view.update(cx, |view, cx| {
6752 view.select_display_ranges(
6753 &[
6754 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6755 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6756 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6757 ],
6758 cx,
6759 );
6760 view.paste(&Paste, cx);
6761 assert_eq!(
6762 view.display_text(cx),
6763 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6764 );
6765 assert_eq!(
6766 view.selected_display_ranges(cx),
6767 &[
6768 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6769 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6770 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6771 ]
6772 );
6773 });
6774 }
6775
6776 #[gpui::test]
6777 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6778 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6779 let settings = EditorSettings::test(&cx);
6780 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6781 view.update(cx, |view, cx| {
6782 view.select_all(&SelectAll, cx);
6783 assert_eq!(
6784 view.selected_display_ranges(cx),
6785 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6786 );
6787 });
6788 }
6789
6790 #[gpui::test]
6791 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6792 let settings = EditorSettings::test(&cx);
6793 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6794 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6795 view.update(cx, |view, cx| {
6796 view.select_display_ranges(
6797 &[
6798 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6799 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6800 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6801 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6802 ],
6803 cx,
6804 );
6805 view.select_line(&SelectLine, cx);
6806 assert_eq!(
6807 view.selected_display_ranges(cx),
6808 vec![
6809 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6810 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6811 ]
6812 );
6813 });
6814
6815 view.update(cx, |view, cx| {
6816 view.select_line(&SelectLine, cx);
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 vec![
6820 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6821 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6822 ]
6823 );
6824 });
6825
6826 view.update(cx, |view, cx| {
6827 view.select_line(&SelectLine, cx);
6828 assert_eq!(
6829 view.selected_display_ranges(cx),
6830 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6831 );
6832 });
6833 }
6834
6835 #[gpui::test]
6836 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6837 let settings = EditorSettings::test(&cx);
6838 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6839 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6840 view.update(cx, |view, cx| {
6841 view.fold_ranges(
6842 vec![
6843 Point::new(0, 2)..Point::new(1, 2),
6844 Point::new(2, 3)..Point::new(4, 1),
6845 Point::new(7, 0)..Point::new(8, 4),
6846 ],
6847 cx,
6848 );
6849 view.select_display_ranges(
6850 &[
6851 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6852 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6853 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6854 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6855 ],
6856 cx,
6857 );
6858 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6859 });
6860
6861 view.update(cx, |view, cx| {
6862 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6863 assert_eq!(
6864 view.display_text(cx),
6865 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6866 );
6867 assert_eq!(
6868 view.selected_display_ranges(cx),
6869 [
6870 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6871 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6872 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6873 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6874 ]
6875 );
6876 });
6877
6878 view.update(cx, |view, cx| {
6879 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6880 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6881 assert_eq!(
6882 view.display_text(cx),
6883 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6884 );
6885 assert_eq!(
6886 view.selected_display_ranges(cx),
6887 [
6888 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6889 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6890 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6891 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6892 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6893 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6894 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6895 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6896 ]
6897 );
6898 });
6899 }
6900
6901 #[gpui::test]
6902 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6903 let settings = EditorSettings::test(&cx);
6904 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6905 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6906
6907 view.update(cx, |view, cx| {
6908 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6909 });
6910 view.update(cx, |view, cx| {
6911 view.add_selection_above(&AddSelectionAbove, cx);
6912 assert_eq!(
6913 view.selected_display_ranges(cx),
6914 vec![
6915 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6916 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6917 ]
6918 );
6919 });
6920
6921 view.update(cx, |view, cx| {
6922 view.add_selection_above(&AddSelectionAbove, cx);
6923 assert_eq!(
6924 view.selected_display_ranges(cx),
6925 vec![
6926 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6927 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6928 ]
6929 );
6930 });
6931
6932 view.update(cx, |view, cx| {
6933 view.add_selection_below(&AddSelectionBelow, cx);
6934 assert_eq!(
6935 view.selected_display_ranges(cx),
6936 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
6937 );
6938 });
6939
6940 view.update(cx, |view, cx| {
6941 view.add_selection_below(&AddSelectionBelow, cx);
6942 assert_eq!(
6943 view.selected_display_ranges(cx),
6944 vec![
6945 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6946 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6947 ]
6948 );
6949 });
6950
6951 view.update(cx, |view, cx| {
6952 view.add_selection_below(&AddSelectionBelow, cx);
6953 assert_eq!(
6954 view.selected_display_ranges(cx),
6955 vec![
6956 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6957 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6958 ]
6959 );
6960 });
6961
6962 view.update(cx, |view, cx| {
6963 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
6964 });
6965 view.update(cx, |view, cx| {
6966 view.add_selection_below(&AddSelectionBelow, cx);
6967 assert_eq!(
6968 view.selected_display_ranges(cx),
6969 vec![
6970 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6971 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6972 ]
6973 );
6974 });
6975
6976 view.update(cx, |view, cx| {
6977 view.add_selection_below(&AddSelectionBelow, cx);
6978 assert_eq!(
6979 view.selected_display_ranges(cx),
6980 vec![
6981 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6982 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6983 ]
6984 );
6985 });
6986
6987 view.update(cx, |view, cx| {
6988 view.add_selection_above(&AddSelectionAbove, cx);
6989 assert_eq!(
6990 view.selected_display_ranges(cx),
6991 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
6992 );
6993 });
6994
6995 view.update(cx, |view, cx| {
6996 view.add_selection_above(&AddSelectionAbove, cx);
6997 assert_eq!(
6998 view.selected_display_ranges(cx),
6999 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7000 );
7001 });
7002
7003 view.update(cx, |view, cx| {
7004 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7005 view.add_selection_below(&AddSelectionBelow, cx);
7006 assert_eq!(
7007 view.selected_display_ranges(cx),
7008 vec![
7009 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7010 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7011 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7012 ]
7013 );
7014 });
7015
7016 view.update(cx, |view, cx| {
7017 view.add_selection_below(&AddSelectionBelow, cx);
7018 assert_eq!(
7019 view.selected_display_ranges(cx),
7020 vec![
7021 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7022 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7023 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7024 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7025 ]
7026 );
7027 });
7028
7029 view.update(cx, |view, cx| {
7030 view.add_selection_above(&AddSelectionAbove, cx);
7031 assert_eq!(
7032 view.selected_display_ranges(cx),
7033 vec![
7034 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7035 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7036 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7037 ]
7038 );
7039 });
7040
7041 view.update(cx, |view, cx| {
7042 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7043 });
7044 view.update(cx, |view, cx| {
7045 view.add_selection_above(&AddSelectionAbove, cx);
7046 assert_eq!(
7047 view.selected_display_ranges(cx),
7048 vec![
7049 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7050 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7051 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7052 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7053 ]
7054 );
7055 });
7056
7057 view.update(cx, |view, cx| {
7058 view.add_selection_below(&AddSelectionBelow, cx);
7059 assert_eq!(
7060 view.selected_display_ranges(cx),
7061 vec![
7062 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7063 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7064 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7065 ]
7066 );
7067 });
7068 }
7069
7070 #[gpui::test]
7071 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7072 let settings = cx.read(EditorSettings::test);
7073 let language = Arc::new(Language::new(
7074 LanguageConfig::default(),
7075 Some(tree_sitter_rust::language()),
7076 ));
7077
7078 let text = r#"
7079 use mod1::mod2::{mod3, mod4};
7080
7081 fn fn_1(param1: bool, param2: &str) {
7082 let var1 = "text";
7083 }
7084 "#
7085 .unindent();
7086
7087 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7088 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7089 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7090 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7091 .await;
7092
7093 view.update(&mut cx, |view, cx| {
7094 view.select_display_ranges(
7095 &[
7096 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7097 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7098 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7099 ],
7100 cx,
7101 );
7102 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7103 });
7104 assert_eq!(
7105 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7106 &[
7107 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7108 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7109 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7110 ]
7111 );
7112
7113 view.update(&mut cx, |view, cx| {
7114 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7115 });
7116 assert_eq!(
7117 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7118 &[
7119 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7120 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7121 ]
7122 );
7123
7124 view.update(&mut cx, |view, cx| {
7125 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7126 });
7127 assert_eq!(
7128 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7129 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7130 );
7131
7132 // Trying to expand the selected syntax node one more time has no effect.
7133 view.update(&mut cx, |view, cx| {
7134 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7135 });
7136 assert_eq!(
7137 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7138 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7139 );
7140
7141 view.update(&mut cx, |view, cx| {
7142 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7143 });
7144 assert_eq!(
7145 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7146 &[
7147 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7148 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7149 ]
7150 );
7151
7152 view.update(&mut cx, |view, cx| {
7153 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7154 });
7155 assert_eq!(
7156 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7157 &[
7158 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7159 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7160 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7161 ]
7162 );
7163
7164 view.update(&mut cx, |view, cx| {
7165 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7166 });
7167 assert_eq!(
7168 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7169 &[
7170 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7171 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7172 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7173 ]
7174 );
7175
7176 // Trying to shrink the selected syntax node one more time has no effect.
7177 view.update(&mut cx, |view, cx| {
7178 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7179 });
7180 assert_eq!(
7181 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7182 &[
7183 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7184 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7185 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7186 ]
7187 );
7188
7189 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7190 // a fold.
7191 view.update(&mut cx, |view, cx| {
7192 view.fold_ranges(
7193 vec![
7194 Point::new(0, 21)..Point::new(0, 24),
7195 Point::new(3, 20)..Point::new(3, 22),
7196 ],
7197 cx,
7198 );
7199 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7200 });
7201 assert_eq!(
7202 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7203 &[
7204 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7205 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7206 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7207 ]
7208 );
7209 }
7210
7211 #[gpui::test]
7212 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7213 let settings = cx.read(EditorSettings::test);
7214 let language = Arc::new(
7215 Language::new(
7216 LanguageConfig {
7217 brackets: vec![
7218 BracketPair {
7219 start: "{".to_string(),
7220 end: "}".to_string(),
7221 close: false,
7222 newline: true,
7223 },
7224 BracketPair {
7225 start: "(".to_string(),
7226 end: ")".to_string(),
7227 close: false,
7228 newline: true,
7229 },
7230 ],
7231 ..Default::default()
7232 },
7233 Some(tree_sitter_rust::language()),
7234 )
7235 .with_indents_query(
7236 r#"
7237 (_ "(" ")" @end) @indent
7238 (_ "{" "}" @end) @indent
7239 "#,
7240 )
7241 .unwrap(),
7242 );
7243
7244 let text = "fn a() {}";
7245
7246 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7247 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7248 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7249 editor
7250 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7251 .await;
7252
7253 editor.update(&mut cx, |editor, cx| {
7254 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7255 editor.newline(&Newline, cx);
7256 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7257 assert_eq!(
7258 editor.selected_ranges(cx),
7259 &[
7260 Point::new(1, 4)..Point::new(1, 4),
7261 Point::new(3, 4)..Point::new(3, 4),
7262 Point::new(5, 0)..Point::new(5, 0)
7263 ]
7264 );
7265 });
7266 }
7267
7268 #[gpui::test]
7269 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7270 let settings = cx.read(EditorSettings::test);
7271 let language = Arc::new(Language::new(
7272 LanguageConfig {
7273 brackets: vec![
7274 BracketPair {
7275 start: "{".to_string(),
7276 end: "}".to_string(),
7277 close: true,
7278 newline: true,
7279 },
7280 BracketPair {
7281 start: "/*".to_string(),
7282 end: " */".to_string(),
7283 close: true,
7284 newline: true,
7285 },
7286 ],
7287 ..Default::default()
7288 },
7289 Some(tree_sitter_rust::language()),
7290 ));
7291
7292 let text = r#"
7293 a
7294
7295 /
7296
7297 "#
7298 .unindent();
7299
7300 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7301 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7302 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7303 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7304 .await;
7305
7306 view.update(&mut cx, |view, cx| {
7307 view.select_display_ranges(
7308 &[
7309 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7310 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7311 ],
7312 cx,
7313 );
7314 view.handle_input(&Input("{".to_string()), cx);
7315 view.handle_input(&Input("{".to_string()), cx);
7316 view.handle_input(&Input("{".to_string()), cx);
7317 assert_eq!(
7318 view.text(cx),
7319 "
7320 {{{}}}
7321 {{{}}}
7322 /
7323
7324 "
7325 .unindent()
7326 );
7327
7328 view.move_right(&MoveRight, cx);
7329 view.handle_input(&Input("}".to_string()), cx);
7330 view.handle_input(&Input("}".to_string()), cx);
7331 view.handle_input(&Input("}".to_string()), cx);
7332 assert_eq!(
7333 view.text(cx),
7334 "
7335 {{{}}}}
7336 {{{}}}}
7337 /
7338
7339 "
7340 .unindent()
7341 );
7342
7343 view.undo(&Undo, cx);
7344 view.handle_input(&Input("/".to_string()), cx);
7345 view.handle_input(&Input("*".to_string()), cx);
7346 assert_eq!(
7347 view.text(cx),
7348 "
7349 /* */
7350 /* */
7351 /
7352
7353 "
7354 .unindent()
7355 );
7356
7357 view.undo(&Undo, cx);
7358 view.select_display_ranges(
7359 &[
7360 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7361 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7362 ],
7363 cx,
7364 );
7365 view.handle_input(&Input("*".to_string()), cx);
7366 assert_eq!(
7367 view.text(cx),
7368 "
7369 a
7370
7371 /*
7372 *
7373 "
7374 .unindent()
7375 );
7376 });
7377 }
7378
7379 #[gpui::test]
7380 async fn test_snippets(mut cx: gpui::TestAppContext) {
7381 let settings = cx.read(EditorSettings::test);
7382
7383 let text = "
7384 a. b
7385 a. b
7386 a. b
7387 "
7388 .unindent();
7389 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7390 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7391
7392 editor.update(&mut cx, |editor, cx| {
7393 let buffer = &editor.snapshot(cx).buffer_snapshot;
7394 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7395 let insertion_ranges = [
7396 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7397 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7398 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7399 ];
7400
7401 editor
7402 .insert_snippet(&insertion_ranges, snippet, cx)
7403 .unwrap();
7404 assert_eq!(
7405 editor.text(cx),
7406 "
7407 a.f(one, two, three) b
7408 a.f(one, two, three) b
7409 a.f(one, two, three) b
7410 "
7411 .unindent()
7412 );
7413 assert_eq!(
7414 editor.selected_ranges::<Point>(cx),
7415 &[
7416 Point::new(0, 4)..Point::new(0, 7),
7417 Point::new(0, 14)..Point::new(0, 19),
7418 Point::new(1, 4)..Point::new(1, 7),
7419 Point::new(1, 14)..Point::new(1, 19),
7420 Point::new(2, 4)..Point::new(2, 7),
7421 Point::new(2, 14)..Point::new(2, 19),
7422 ]
7423 );
7424
7425 // Can't move earlier than the first tab stop
7426 editor.move_to_prev_snippet_tabstop(cx);
7427 assert_eq!(
7428 editor.selected_ranges::<Point>(cx),
7429 &[
7430 Point::new(0, 4)..Point::new(0, 7),
7431 Point::new(0, 14)..Point::new(0, 19),
7432 Point::new(1, 4)..Point::new(1, 7),
7433 Point::new(1, 14)..Point::new(1, 19),
7434 Point::new(2, 4)..Point::new(2, 7),
7435 Point::new(2, 14)..Point::new(2, 19),
7436 ]
7437 );
7438
7439 assert!(editor.move_to_next_snippet_tabstop(cx));
7440 assert_eq!(
7441 editor.selected_ranges::<Point>(cx),
7442 &[
7443 Point::new(0, 9)..Point::new(0, 12),
7444 Point::new(1, 9)..Point::new(1, 12),
7445 Point::new(2, 9)..Point::new(2, 12)
7446 ]
7447 );
7448
7449 editor.move_to_prev_snippet_tabstop(cx);
7450 assert_eq!(
7451 editor.selected_ranges::<Point>(cx),
7452 &[
7453 Point::new(0, 4)..Point::new(0, 7),
7454 Point::new(0, 14)..Point::new(0, 19),
7455 Point::new(1, 4)..Point::new(1, 7),
7456 Point::new(1, 14)..Point::new(1, 19),
7457 Point::new(2, 4)..Point::new(2, 7),
7458 Point::new(2, 14)..Point::new(2, 19),
7459 ]
7460 );
7461
7462 assert!(editor.move_to_next_snippet_tabstop(cx));
7463 assert!(editor.move_to_next_snippet_tabstop(cx));
7464 assert_eq!(
7465 editor.selected_ranges::<Point>(cx),
7466 &[
7467 Point::new(0, 20)..Point::new(0, 20),
7468 Point::new(1, 20)..Point::new(1, 20),
7469 Point::new(2, 20)..Point::new(2, 20)
7470 ]
7471 );
7472
7473 // As soon as the last tab stop is reached, snippet state is gone
7474 editor.move_to_prev_snippet_tabstop(cx);
7475 assert_eq!(
7476 editor.selected_ranges::<Point>(cx),
7477 &[
7478 Point::new(0, 20)..Point::new(0, 20),
7479 Point::new(1, 20)..Point::new(1, 20),
7480 Point::new(2, 20)..Point::new(2, 20)
7481 ]
7482 );
7483 });
7484 }
7485
7486 #[gpui::test]
7487 async fn test_completion(mut cx: gpui::TestAppContext) {
7488 let settings = cx.read(EditorSettings::test);
7489 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7490 lsp::ServerCapabilities {
7491 completion_provider: Some(lsp::CompletionOptions {
7492 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7493 ..Default::default()
7494 }),
7495 ..Default::default()
7496 },
7497 cx.background(),
7498 )
7499 .await;
7500
7501 let text = "
7502 one
7503 two
7504 three
7505 "
7506 .unindent();
7507 let buffer = cx.add_model(|cx| {
7508 Buffer::from_file(
7509 0,
7510 text,
7511 Box::new(FakeFile {
7512 path: Arc::from(Path::new("/the/file")),
7513 }),
7514 cx,
7515 )
7516 .with_language_server(language_server, cx)
7517 });
7518 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7519 buffer.next_notification(&cx).await;
7520
7521 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7522
7523 editor.update(&mut cx, |editor, cx| {
7524 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7525 editor.handle_input(&Input(".".to_string()), cx);
7526 });
7527
7528 handle_completion_request(
7529 &mut fake,
7530 "/the/file",
7531 Point::new(0, 4),
7532 &[
7533 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7534 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7535 ],
7536 )
7537 .await;
7538 editor.next_notification(&cx).await;
7539
7540 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7541 editor.move_down(&MoveDown, cx);
7542 let apply_additional_edits = editor
7543 .confirm_completion(&ConfirmCompletion(None), cx)
7544 .unwrap();
7545 assert_eq!(
7546 editor.text(cx),
7547 "
7548 one.second_completion
7549 two
7550 three
7551 "
7552 .unindent()
7553 );
7554 apply_additional_edits
7555 });
7556
7557 handle_resolve_completion_request(
7558 &mut fake,
7559 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7560 )
7561 .await;
7562 apply_additional_edits.await.unwrap();
7563 assert_eq!(
7564 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7565 "
7566 one.second_completion
7567 two
7568 three
7569 additional edit
7570 "
7571 .unindent()
7572 );
7573
7574 editor.update(&mut cx, |editor, cx| {
7575 editor.select_ranges(
7576 [
7577 Point::new(1, 3)..Point::new(1, 3),
7578 Point::new(2, 5)..Point::new(2, 5),
7579 ],
7580 None,
7581 cx,
7582 );
7583
7584 editor.handle_input(&Input(" ".to_string()), cx);
7585 assert!(editor.context_menu.is_none());
7586 editor.handle_input(&Input("s".to_string()), cx);
7587 assert!(editor.context_menu.is_none());
7588 });
7589
7590 handle_completion_request(
7591 &mut fake,
7592 "/the/file",
7593 Point::new(2, 7),
7594 &[
7595 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7596 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7597 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7598 ],
7599 )
7600 .await;
7601 editor
7602 .condition(&cx, |editor, _| editor.context_menu.is_some())
7603 .await;
7604
7605 editor.update(&mut cx, |editor, cx| {
7606 editor.handle_input(&Input("i".to_string()), cx);
7607 });
7608
7609 handle_completion_request(
7610 &mut fake,
7611 "/the/file",
7612 Point::new(2, 8),
7613 &[
7614 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7615 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7616 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7617 ],
7618 )
7619 .await;
7620 editor.next_notification(&cx).await;
7621
7622 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7623 let apply_additional_edits = editor
7624 .confirm_completion(&ConfirmCompletion(None), cx)
7625 .unwrap();
7626 assert_eq!(
7627 editor.text(cx),
7628 "
7629 one.second_completion
7630 two sixth_completion
7631 three sixth_completion
7632 additional edit
7633 "
7634 .unindent()
7635 );
7636 apply_additional_edits
7637 });
7638 handle_resolve_completion_request(&mut fake, None).await;
7639 apply_additional_edits.await.unwrap();
7640
7641 async fn handle_completion_request(
7642 fake: &mut FakeLanguageServer,
7643 path: &str,
7644 position: Point,
7645 completions: &[(Range<Point>, &str)],
7646 ) {
7647 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7648 assert_eq!(
7649 params.text_document_position.text_document.uri,
7650 lsp::Url::from_file_path(path).unwrap()
7651 );
7652 assert_eq!(
7653 params.text_document_position.position,
7654 lsp::Position::new(position.row, position.column)
7655 );
7656
7657 let completions = completions
7658 .iter()
7659 .map(|(range, new_text)| lsp::CompletionItem {
7660 label: new_text.to_string(),
7661 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7662 range: lsp::Range::new(
7663 lsp::Position::new(range.start.row, range.start.column),
7664 lsp::Position::new(range.start.row, range.start.column),
7665 ),
7666 new_text: new_text.to_string(),
7667 })),
7668 ..Default::default()
7669 })
7670 .collect();
7671 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7672 .await;
7673 }
7674
7675 async fn handle_resolve_completion_request(
7676 fake: &mut FakeLanguageServer,
7677 edit: Option<(Range<Point>, &str)>,
7678 ) {
7679 let (id, _) = fake
7680 .receive_request::<lsp::request::ResolveCompletionItem>()
7681 .await;
7682 fake.respond(
7683 id,
7684 lsp::CompletionItem {
7685 additional_text_edits: edit.map(|(range, new_text)| {
7686 vec![lsp::TextEdit::new(
7687 lsp::Range::new(
7688 lsp::Position::new(range.start.row, range.start.column),
7689 lsp::Position::new(range.end.row, range.end.column),
7690 ),
7691 new_text.to_string(),
7692 )]
7693 }),
7694 ..Default::default()
7695 },
7696 )
7697 .await;
7698 }
7699 }
7700
7701 #[gpui::test]
7702 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7703 let settings = cx.read(EditorSettings::test);
7704 let language = Arc::new(Language::new(
7705 LanguageConfig {
7706 line_comment: Some("// ".to_string()),
7707 ..Default::default()
7708 },
7709 Some(tree_sitter_rust::language()),
7710 ));
7711
7712 let text = "
7713 fn a() {
7714 //b();
7715 // c();
7716 // d();
7717 }
7718 "
7719 .unindent();
7720
7721 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7722 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7723 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7724
7725 view.update(&mut cx, |editor, cx| {
7726 // If multiple selections intersect a line, the line is only
7727 // toggled once.
7728 editor.select_display_ranges(
7729 &[
7730 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7731 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7732 ],
7733 cx,
7734 );
7735 editor.toggle_comments(&ToggleComments, cx);
7736 assert_eq!(
7737 editor.text(cx),
7738 "
7739 fn a() {
7740 b();
7741 c();
7742 d();
7743 }
7744 "
7745 .unindent()
7746 );
7747
7748 // The comment prefix is inserted at the same column for every line
7749 // in a selection.
7750 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7751 editor.toggle_comments(&ToggleComments, cx);
7752 assert_eq!(
7753 editor.text(cx),
7754 "
7755 fn a() {
7756 // b();
7757 // c();
7758 // d();
7759 }
7760 "
7761 .unindent()
7762 );
7763
7764 // If a selection ends at the beginning of a line, that line is not toggled.
7765 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7766 editor.toggle_comments(&ToggleComments, cx);
7767 assert_eq!(
7768 editor.text(cx),
7769 "
7770 fn a() {
7771 // b();
7772 c();
7773 // d();
7774 }
7775 "
7776 .unindent()
7777 );
7778 });
7779 }
7780
7781 #[gpui::test]
7782 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7783 let settings = EditorSettings::test(cx);
7784 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7785 let multibuffer = cx.add_model(|cx| {
7786 let mut multibuffer = MultiBuffer::new(0);
7787 multibuffer.push_excerpt(
7788 ExcerptProperties {
7789 buffer: &buffer,
7790 range: Point::new(0, 0)..Point::new(0, 4),
7791 },
7792 cx,
7793 );
7794 multibuffer.push_excerpt(
7795 ExcerptProperties {
7796 buffer: &buffer,
7797 range: Point::new(1, 0)..Point::new(1, 4),
7798 },
7799 cx,
7800 );
7801 multibuffer
7802 });
7803
7804 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7805
7806 let (_, view) = cx.add_window(Default::default(), |cx| {
7807 build_editor(multibuffer, settings, cx)
7808 });
7809 view.update(cx, |view, cx| {
7810 view.select_display_ranges(
7811 &[
7812 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7813 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7814 ],
7815 cx,
7816 );
7817
7818 view.handle_input(&Input("X".to_string()), cx);
7819 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7820 assert_eq!(
7821 view.selected_display_ranges(cx),
7822 &[
7823 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7824 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7825 ]
7826 )
7827 });
7828 }
7829
7830 #[gpui::test]
7831 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7832 let settings = EditorSettings::test(cx);
7833 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7834 let multibuffer = cx.add_model(|cx| {
7835 let mut multibuffer = MultiBuffer::new(0);
7836 multibuffer.push_excerpt(
7837 ExcerptProperties {
7838 buffer: &buffer,
7839 range: Point::new(0, 0)..Point::new(1, 4),
7840 },
7841 cx,
7842 );
7843 multibuffer.push_excerpt(
7844 ExcerptProperties {
7845 buffer: &buffer,
7846 range: Point::new(1, 0)..Point::new(2, 4),
7847 },
7848 cx,
7849 );
7850 multibuffer
7851 });
7852
7853 assert_eq!(
7854 multibuffer.read(cx).read(cx).text(),
7855 "aaaa\nbbbb\nbbbb\ncccc"
7856 );
7857
7858 let (_, view) = cx.add_window(Default::default(), |cx| {
7859 build_editor(multibuffer, settings, cx)
7860 });
7861 view.update(cx, |view, cx| {
7862 view.select_display_ranges(
7863 &[
7864 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7865 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7866 ],
7867 cx,
7868 );
7869
7870 view.handle_input(&Input("X".to_string()), cx);
7871 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7872 assert_eq!(
7873 view.selected_display_ranges(cx),
7874 &[
7875 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7876 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7877 ]
7878 );
7879
7880 view.newline(&Newline, cx);
7881 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7882 assert_eq!(
7883 view.selected_display_ranges(cx),
7884 &[
7885 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7886 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7887 ]
7888 );
7889 });
7890 }
7891
7892 #[gpui::test]
7893 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7894 let settings = EditorSettings::test(cx);
7895 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7896 let mut excerpt1_id = None;
7897 let multibuffer = cx.add_model(|cx| {
7898 let mut multibuffer = MultiBuffer::new(0);
7899 excerpt1_id = Some(multibuffer.push_excerpt(
7900 ExcerptProperties {
7901 buffer: &buffer,
7902 range: Point::new(0, 0)..Point::new(1, 4),
7903 },
7904 cx,
7905 ));
7906 multibuffer.push_excerpt(
7907 ExcerptProperties {
7908 buffer: &buffer,
7909 range: Point::new(1, 0)..Point::new(2, 4),
7910 },
7911 cx,
7912 );
7913 multibuffer
7914 });
7915 assert_eq!(
7916 multibuffer.read(cx).read(cx).text(),
7917 "aaaa\nbbbb\nbbbb\ncccc"
7918 );
7919 let (_, editor) = cx.add_window(Default::default(), |cx| {
7920 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7921 editor.select_display_ranges(
7922 &[
7923 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7924 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7925 ],
7926 cx,
7927 );
7928 editor
7929 });
7930
7931 // Refreshing selections is a no-op when excerpts haven't changed.
7932 editor.update(cx, |editor, cx| {
7933 editor.refresh_selections(cx);
7934 assert_eq!(
7935 editor.selected_display_ranges(cx),
7936 [
7937 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7938 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7939 ]
7940 );
7941 });
7942
7943 multibuffer.update(cx, |multibuffer, cx| {
7944 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7945 });
7946 editor.update(cx, |editor, cx| {
7947 // Removing an excerpt causes the first selection to become degenerate.
7948 assert_eq!(
7949 editor.selected_display_ranges(cx),
7950 [
7951 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7952 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7953 ]
7954 );
7955
7956 // Refreshing selections will relocate the first selection to the original buffer
7957 // location.
7958 editor.refresh_selections(cx);
7959 assert_eq!(
7960 editor.selected_display_ranges(cx),
7961 [
7962 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7963 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7964 ]
7965 );
7966 });
7967 }
7968
7969 #[gpui::test]
7970 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7971 let settings = cx.read(EditorSettings::test);
7972 let language = Arc::new(Language::new(
7973 LanguageConfig {
7974 brackets: vec![
7975 BracketPair {
7976 start: "{".to_string(),
7977 end: "}".to_string(),
7978 close: true,
7979 newline: true,
7980 },
7981 BracketPair {
7982 start: "/* ".to_string(),
7983 end: " */".to_string(),
7984 close: true,
7985 newline: true,
7986 },
7987 ],
7988 ..Default::default()
7989 },
7990 Some(tree_sitter_rust::language()),
7991 ));
7992
7993 let text = concat!(
7994 "{ }\n", // Suppress rustfmt
7995 " x\n", //
7996 " /* */\n", //
7997 "x\n", //
7998 "{{} }\n", //
7999 );
8000
8001 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8002 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8003 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8004 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8005 .await;
8006
8007 view.update(&mut cx, |view, cx| {
8008 view.select_display_ranges(
8009 &[
8010 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8011 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8012 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8013 ],
8014 cx,
8015 );
8016 view.newline(&Newline, cx);
8017
8018 assert_eq!(
8019 view.buffer().read(cx).read(cx).text(),
8020 concat!(
8021 "{ \n", // Suppress rustfmt
8022 "\n", //
8023 "}\n", //
8024 " x\n", //
8025 " /* \n", //
8026 " \n", //
8027 " */\n", //
8028 "x\n", //
8029 "{{} \n", //
8030 "}\n", //
8031 )
8032 );
8033 });
8034 }
8035
8036 #[gpui::test]
8037 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8038 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8039 let settings = EditorSettings::test(&cx);
8040 let (_, editor) = cx.add_window(Default::default(), |cx| {
8041 build_editor(buffer.clone(), settings, cx)
8042 });
8043
8044 editor.update(cx, |editor, cx| {
8045 struct Type1;
8046 struct Type2;
8047
8048 let buffer = buffer.read(cx).snapshot(cx);
8049
8050 let anchor_range = |range: Range<Point>| {
8051 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8052 };
8053
8054 editor.highlight_ranges::<Type1>(
8055 vec![
8056 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8057 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8058 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8059 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8060 ],
8061 Color::red(),
8062 cx,
8063 );
8064 editor.highlight_ranges::<Type2>(
8065 vec![
8066 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8067 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8068 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8069 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8070 ],
8071 Color::green(),
8072 cx,
8073 );
8074
8075 let snapshot = editor.snapshot(cx);
8076 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8077 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8078 &snapshot,
8079 );
8080 // Enforce a consistent ordering based on color without relying on the ordering of the
8081 // highlight's `TypeId` which is non-deterministic.
8082 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8083 assert_eq!(
8084 highlighted_ranges,
8085 &[
8086 (
8087 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8088 Color::green(),
8089 ),
8090 (
8091 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8092 Color::green(),
8093 ),
8094 (
8095 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8096 Color::red(),
8097 ),
8098 (
8099 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8100 Color::red(),
8101 ),
8102 ]
8103 );
8104 assert_eq!(
8105 editor.highlighted_ranges_in_range(
8106 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8107 &snapshot,
8108 ),
8109 &[(
8110 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8111 Color::red(),
8112 )]
8113 );
8114 });
8115 }
8116
8117 #[test]
8118 fn test_combine_syntax_and_fuzzy_match_highlights() {
8119 let string = "abcdefghijklmnop";
8120 let default = HighlightStyle::default();
8121 let syntax_ranges = [
8122 (
8123 0..3,
8124 HighlightStyle {
8125 color: Color::red(),
8126 ..default
8127 },
8128 ),
8129 (
8130 4..8,
8131 HighlightStyle {
8132 color: Color::green(),
8133 ..default
8134 },
8135 ),
8136 ];
8137 let match_indices = [4, 6, 7, 8];
8138 assert_eq!(
8139 combine_syntax_and_fuzzy_match_highlights(
8140 &string,
8141 default,
8142 syntax_ranges.into_iter(),
8143 &match_indices,
8144 ),
8145 &[
8146 (
8147 0..3,
8148 HighlightStyle {
8149 color: Color::red(),
8150 ..default
8151 },
8152 ),
8153 (
8154 4..5,
8155 HighlightStyle {
8156 color: Color::green(),
8157 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8158 ..default
8159 },
8160 ),
8161 (
8162 5..6,
8163 HighlightStyle {
8164 color: Color::green(),
8165 ..default
8166 },
8167 ),
8168 (
8169 6..8,
8170 HighlightStyle {
8171 color: Color::green(),
8172 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8173 ..default
8174 },
8175 ),
8176 (
8177 8..9,
8178 HighlightStyle {
8179 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8180 ..default
8181 },
8182 ),
8183 ]
8184 );
8185 }
8186
8187 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8188 let point = DisplayPoint::new(row as u32, column as u32);
8189 point..point
8190 }
8191
8192 fn build_editor(
8193 buffer: ModelHandle<MultiBuffer>,
8194 settings: EditorSettings,
8195 cx: &mut ViewContext<Editor>,
8196 ) -> Editor {
8197 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
8198 }
8199}
8200
8201trait RangeExt<T> {
8202 fn sorted(&self) -> Range<T>;
8203 fn to_inclusive(&self) -> RangeInclusive<T>;
8204}
8205
8206impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8207 fn sorted(&self) -> Self {
8208 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8209 }
8210
8211 fn to_inclusive(&self) -> RangeInclusive<T> {
8212 self.start.clone()..=self.end.clone()
8213 }
8214}