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 let apply_code_actions = workspace.project().update(cx, |project, cx| {
2081 project.apply_code_action(buffer, action, cx)
2082 });
2083 Some(cx.spawn(|workspace, mut cx| async move {
2084 let buffers = apply_code_actions.await?;
2085 // TODO: replace this with opening a single tab that is a multibuffer
2086 workspace.update(&mut cx, |workspace, cx| {
2087 for (buffer, _) in buffers {
2088 workspace.open_item(BufferItemHandle(buffer), cx);
2089 }
2090 });
2091
2092 Ok(())
2093 }))
2094 }
2095
2096 pub fn showing_context_menu(&self) -> bool {
2097 self.context_menu
2098 .as_ref()
2099 .map_or(false, |menu| menu.visible())
2100 }
2101
2102 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2103 self.context_menu
2104 .as_ref()
2105 .map(|menu| menu.render(self.build_settings.clone(), cx))
2106 }
2107
2108 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2109 if !matches!(menu, ContextMenu::Completions(_)) {
2110 self.completion_tasks.clear();
2111 }
2112 self.context_menu = Some(menu);
2113 cx.notify()
2114 }
2115
2116 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2117 cx.notify();
2118 self.completion_tasks.clear();
2119 self.context_menu.take()
2120 }
2121
2122 pub fn insert_snippet(
2123 &mut self,
2124 insertion_ranges: &[Range<usize>],
2125 snippet: Snippet,
2126 cx: &mut ViewContext<Self>,
2127 ) -> Result<()> {
2128 let tabstops = self.buffer.update(cx, |buffer, cx| {
2129 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2130
2131 let snapshot = &*buffer.read(cx);
2132 let snippet = &snippet;
2133 snippet
2134 .tabstops
2135 .iter()
2136 .map(|tabstop| {
2137 let mut tabstop_ranges = tabstop
2138 .iter()
2139 .flat_map(|tabstop_range| {
2140 let mut delta = 0 as isize;
2141 insertion_ranges.iter().map(move |insertion_range| {
2142 let insertion_start = insertion_range.start as isize + delta;
2143 delta +=
2144 snippet.text.len() as isize - insertion_range.len() as isize;
2145
2146 let start = snapshot.anchor_before(
2147 (insertion_start + tabstop_range.start) as usize,
2148 );
2149 let end = snapshot
2150 .anchor_after((insertion_start + tabstop_range.end) as usize);
2151 start..end
2152 })
2153 })
2154 .collect::<Vec<_>>();
2155 tabstop_ranges
2156 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2157 tabstop_ranges
2158 })
2159 .collect::<Vec<_>>()
2160 });
2161
2162 if let Some(tabstop) = tabstops.first() {
2163 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2164 self.snippet_stack.push(SnippetState {
2165 active_index: 0,
2166 ranges: tabstops,
2167 });
2168 }
2169
2170 Ok(())
2171 }
2172
2173 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2174 self.move_to_snippet_tabstop(Bias::Right, cx)
2175 }
2176
2177 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2178 self.move_to_snippet_tabstop(Bias::Left, cx);
2179 }
2180
2181 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2182 let buffer = self.buffer.read(cx).snapshot(cx);
2183
2184 if let Some(snippet) = self.snippet_stack.last_mut() {
2185 match bias {
2186 Bias::Left => {
2187 if snippet.active_index > 0 {
2188 snippet.active_index -= 1;
2189 } else {
2190 return false;
2191 }
2192 }
2193 Bias::Right => {
2194 if snippet.active_index + 1 < snippet.ranges.len() {
2195 snippet.active_index += 1;
2196 } else {
2197 return false;
2198 }
2199 }
2200 }
2201 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2202 let new_selections = current_ranges
2203 .iter()
2204 .map(|new_range| {
2205 let new_range = new_range.to_offset(&buffer);
2206 Selection {
2207 id: post_inc(&mut self.next_selection_id),
2208 start: new_range.start,
2209 end: new_range.end,
2210 reversed: false,
2211 goal: SelectionGoal::None,
2212 }
2213 })
2214 .collect();
2215
2216 // Remove the snippet state when moving to the last tabstop.
2217 if snippet.active_index + 1 == snippet.ranges.len() {
2218 self.snippet_stack.pop();
2219 }
2220
2221 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2222 return true;
2223 }
2224 self.snippet_stack.pop();
2225 }
2226
2227 false
2228 }
2229
2230 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2231 self.start_transaction(cx);
2232 self.select_all(&SelectAll, cx);
2233 self.insert("", cx);
2234 self.end_transaction(cx);
2235 }
2236
2237 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2238 self.start_transaction(cx);
2239 let mut selections = self.local_selections::<Point>(cx);
2240 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2241 for selection in &mut selections {
2242 if selection.is_empty() {
2243 let head = selection.head().to_display_point(&display_map);
2244 let cursor = movement::left(&display_map, head)
2245 .unwrap()
2246 .to_point(&display_map);
2247 selection.set_head(cursor);
2248 selection.goal = SelectionGoal::None;
2249 }
2250 }
2251 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2252 self.insert("", cx);
2253 self.end_transaction(cx);
2254 }
2255
2256 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2257 self.start_transaction(cx);
2258 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2259 let mut selections = self.local_selections::<Point>(cx);
2260 for selection in &mut selections {
2261 if selection.is_empty() {
2262 let head = selection.head().to_display_point(&display_map);
2263 let cursor = movement::right(&display_map, head)
2264 .unwrap()
2265 .to_point(&display_map);
2266 selection.set_head(cursor);
2267 selection.goal = SelectionGoal::None;
2268 }
2269 }
2270 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2271 self.insert(&"", cx);
2272 self.end_transaction(cx);
2273 }
2274
2275 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2276 if self.move_to_next_snippet_tabstop(cx) {
2277 return;
2278 }
2279
2280 self.start_transaction(cx);
2281 let tab_size = (self.build_settings)(cx).tab_size;
2282 let mut selections = self.local_selections::<Point>(cx);
2283 let mut last_indent = None;
2284 self.buffer.update(cx, |buffer, cx| {
2285 for selection in &mut selections {
2286 if selection.is_empty() {
2287 let char_column = buffer
2288 .read(cx)
2289 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2290 .flat_map(str::chars)
2291 .count();
2292 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2293 buffer.edit(
2294 [selection.start..selection.start],
2295 " ".repeat(chars_to_next_tab_stop),
2296 cx,
2297 );
2298 selection.start.column += chars_to_next_tab_stop as u32;
2299 selection.end = selection.start;
2300 } else {
2301 let mut start_row = selection.start.row;
2302 let mut end_row = selection.end.row + 1;
2303
2304 // If a selection ends at the beginning of a line, don't indent
2305 // that last line.
2306 if selection.end.column == 0 {
2307 end_row -= 1;
2308 }
2309
2310 // Avoid re-indenting a row that has already been indented by a
2311 // previous selection, but still update this selection's column
2312 // to reflect that indentation.
2313 if let Some((last_indent_row, last_indent_len)) = last_indent {
2314 if last_indent_row == selection.start.row {
2315 selection.start.column += last_indent_len;
2316 start_row += 1;
2317 }
2318 if last_indent_row == selection.end.row {
2319 selection.end.column += last_indent_len;
2320 }
2321 }
2322
2323 for row in start_row..end_row {
2324 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2325 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2326 let row_start = Point::new(row, 0);
2327 buffer.edit(
2328 [row_start..row_start],
2329 " ".repeat(columns_to_next_tab_stop),
2330 cx,
2331 );
2332
2333 // Update this selection's endpoints to reflect the indentation.
2334 if row == selection.start.row {
2335 selection.start.column += columns_to_next_tab_stop as u32;
2336 }
2337 if row == selection.end.row {
2338 selection.end.column += columns_to_next_tab_stop as u32;
2339 }
2340
2341 last_indent = Some((row, columns_to_next_tab_stop as u32));
2342 }
2343 }
2344 }
2345 });
2346
2347 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2348 self.end_transaction(cx);
2349 }
2350
2351 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2352 if !self.snippet_stack.is_empty() {
2353 self.move_to_prev_snippet_tabstop(cx);
2354 return;
2355 }
2356
2357 self.start_transaction(cx);
2358 let tab_size = (self.build_settings)(cx).tab_size;
2359 let selections = self.local_selections::<Point>(cx);
2360 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2361 let mut deletion_ranges = Vec::new();
2362 let mut last_outdent = None;
2363 {
2364 let buffer = self.buffer.read(cx).read(cx);
2365 for selection in &selections {
2366 let mut rows = selection.spanned_rows(false, &display_map);
2367
2368 // Avoid re-outdenting a row that has already been outdented by a
2369 // previous selection.
2370 if let Some(last_row) = last_outdent {
2371 if last_row == rows.start {
2372 rows.start += 1;
2373 }
2374 }
2375
2376 for row in rows {
2377 let column = buffer.indent_column_for_line(row) as usize;
2378 if column > 0 {
2379 let mut deletion_len = (column % tab_size) as u32;
2380 if deletion_len == 0 {
2381 deletion_len = tab_size as u32;
2382 }
2383 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2384 last_outdent = Some(row);
2385 }
2386 }
2387 }
2388 }
2389 self.buffer.update(cx, |buffer, cx| {
2390 buffer.edit(deletion_ranges, "", cx);
2391 });
2392
2393 self.update_selections(
2394 self.local_selections::<usize>(cx),
2395 Some(Autoscroll::Fit),
2396 cx,
2397 );
2398 self.end_transaction(cx);
2399 }
2400
2401 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2402 self.start_transaction(cx);
2403
2404 let selections = self.local_selections::<Point>(cx);
2405 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2406 let buffer = self.buffer.read(cx).snapshot(cx);
2407
2408 let mut new_cursors = Vec::new();
2409 let mut edit_ranges = Vec::new();
2410 let mut selections = selections.iter().peekable();
2411 while let Some(selection) = selections.next() {
2412 let mut rows = selection.spanned_rows(false, &display_map);
2413 let goal_display_column = selection.head().to_display_point(&display_map).column();
2414
2415 // Accumulate contiguous regions of rows that we want to delete.
2416 while let Some(next_selection) = selections.peek() {
2417 let next_rows = next_selection.spanned_rows(false, &display_map);
2418 if next_rows.start <= rows.end {
2419 rows.end = next_rows.end;
2420 selections.next().unwrap();
2421 } else {
2422 break;
2423 }
2424 }
2425
2426 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2427 let edit_end;
2428 let cursor_buffer_row;
2429 if buffer.max_point().row >= rows.end {
2430 // If there's a line after the range, delete the \n from the end of the row range
2431 // and position the cursor on the next line.
2432 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2433 cursor_buffer_row = rows.end;
2434 } else {
2435 // If there isn't a line after the range, delete the \n from the line before the
2436 // start of the row range and position the cursor there.
2437 edit_start = edit_start.saturating_sub(1);
2438 edit_end = buffer.len();
2439 cursor_buffer_row = rows.start.saturating_sub(1);
2440 }
2441
2442 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2443 *cursor.column_mut() =
2444 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2445
2446 new_cursors.push((
2447 selection.id,
2448 buffer.anchor_after(cursor.to_point(&display_map)),
2449 ));
2450 edit_ranges.push(edit_start..edit_end);
2451 }
2452
2453 let buffer = self.buffer.update(cx, |buffer, cx| {
2454 buffer.edit(edit_ranges, "", cx);
2455 buffer.snapshot(cx)
2456 });
2457 let new_selections = new_cursors
2458 .into_iter()
2459 .map(|(id, cursor)| {
2460 let cursor = cursor.to_point(&buffer);
2461 Selection {
2462 id,
2463 start: cursor,
2464 end: cursor,
2465 reversed: false,
2466 goal: SelectionGoal::None,
2467 }
2468 })
2469 .collect();
2470 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2471 self.end_transaction(cx);
2472 }
2473
2474 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2475 self.start_transaction(cx);
2476
2477 let selections = self.local_selections::<Point>(cx);
2478 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2479 let buffer = &display_map.buffer_snapshot;
2480
2481 let mut edits = Vec::new();
2482 let mut selections_iter = selections.iter().peekable();
2483 while let Some(selection) = selections_iter.next() {
2484 // Avoid duplicating the same lines twice.
2485 let mut rows = selection.spanned_rows(false, &display_map);
2486
2487 while let Some(next_selection) = selections_iter.peek() {
2488 let next_rows = next_selection.spanned_rows(false, &display_map);
2489 if next_rows.start <= rows.end - 1 {
2490 rows.end = next_rows.end;
2491 selections_iter.next().unwrap();
2492 } else {
2493 break;
2494 }
2495 }
2496
2497 // Copy the text from the selected row region and splice it at the start of the region.
2498 let start = Point::new(rows.start, 0);
2499 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2500 let text = buffer
2501 .text_for_range(start..end)
2502 .chain(Some("\n"))
2503 .collect::<String>();
2504 edits.push((start, text, rows.len() as u32));
2505 }
2506
2507 self.buffer.update(cx, |buffer, cx| {
2508 for (point, text, _) in edits.into_iter().rev() {
2509 buffer.edit(Some(point..point), text, cx);
2510 }
2511 });
2512
2513 self.request_autoscroll(Autoscroll::Fit, cx);
2514 self.end_transaction(cx);
2515 }
2516
2517 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2518 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2519 let buffer = self.buffer.read(cx).snapshot(cx);
2520
2521 let mut edits = Vec::new();
2522 let mut unfold_ranges = Vec::new();
2523 let mut refold_ranges = Vec::new();
2524
2525 let selections = self.local_selections::<Point>(cx);
2526 let mut selections = selections.iter().peekable();
2527 let mut contiguous_row_selections = Vec::new();
2528 let mut new_selections = Vec::new();
2529
2530 while let Some(selection) = selections.next() {
2531 // Find all the selections that span a contiguous row range
2532 contiguous_row_selections.push(selection.clone());
2533 let start_row = selection.start.row;
2534 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2535 display_map.next_line_boundary(selection.end).0.row + 1
2536 } else {
2537 selection.end.row
2538 };
2539
2540 while let Some(next_selection) = selections.peek() {
2541 if next_selection.start.row <= end_row {
2542 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2543 display_map.next_line_boundary(next_selection.end).0.row + 1
2544 } else {
2545 next_selection.end.row
2546 };
2547 contiguous_row_selections.push(selections.next().unwrap().clone());
2548 } else {
2549 break;
2550 }
2551 }
2552
2553 // Move the text spanned by the row range to be before the line preceding the row range
2554 if start_row > 0 {
2555 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2556 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2557 let insertion_point = display_map
2558 .prev_line_boundary(Point::new(start_row - 1, 0))
2559 .0;
2560
2561 // Don't move lines across excerpts
2562 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2563 let text = buffer
2564 .text_for_range(range_to_move.clone())
2565 .flat_map(|s| s.chars())
2566 .skip(1)
2567 .chain(['\n'])
2568 .collect::<String>();
2569
2570 edits.push((
2571 buffer.anchor_after(range_to_move.start)
2572 ..buffer.anchor_before(range_to_move.end),
2573 String::new(),
2574 ));
2575 let insertion_anchor = buffer.anchor_after(insertion_point);
2576 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2577
2578 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2579
2580 // Move selections up
2581 new_selections.extend(contiguous_row_selections.drain(..).map(
2582 |mut selection| {
2583 selection.start.row -= row_delta;
2584 selection.end.row -= row_delta;
2585 selection
2586 },
2587 ));
2588
2589 // Move folds up
2590 unfold_ranges.push(range_to_move.clone());
2591 for fold in display_map.folds_in_range(
2592 buffer.anchor_before(range_to_move.start)
2593 ..buffer.anchor_after(range_to_move.end),
2594 ) {
2595 let mut start = fold.start.to_point(&buffer);
2596 let mut end = fold.end.to_point(&buffer);
2597 start.row -= row_delta;
2598 end.row -= row_delta;
2599 refold_ranges.push(start..end);
2600 }
2601 }
2602 }
2603
2604 // If we didn't move line(s), preserve the existing selections
2605 new_selections.extend(contiguous_row_selections.drain(..));
2606 }
2607
2608 self.start_transaction(cx);
2609 self.unfold_ranges(unfold_ranges, cx);
2610 self.buffer.update(cx, |buffer, cx| {
2611 for (range, text) in edits {
2612 buffer.edit([range], text, cx);
2613 }
2614 });
2615 self.fold_ranges(refold_ranges, cx);
2616 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2617 self.end_transaction(cx);
2618 }
2619
2620 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2621 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2622 let buffer = self.buffer.read(cx).snapshot(cx);
2623
2624 let mut edits = Vec::new();
2625 let mut unfold_ranges = Vec::new();
2626 let mut refold_ranges = Vec::new();
2627
2628 let selections = self.local_selections::<Point>(cx);
2629 let mut selections = selections.iter().peekable();
2630 let mut contiguous_row_selections = Vec::new();
2631 let mut new_selections = Vec::new();
2632
2633 while let Some(selection) = selections.next() {
2634 // Find all the selections that span a contiguous row range
2635 contiguous_row_selections.push(selection.clone());
2636 let start_row = selection.start.row;
2637 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2638 display_map.next_line_boundary(selection.end).0.row + 1
2639 } else {
2640 selection.end.row
2641 };
2642
2643 while let Some(next_selection) = selections.peek() {
2644 if next_selection.start.row <= end_row {
2645 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2646 display_map.next_line_boundary(next_selection.end).0.row + 1
2647 } else {
2648 next_selection.end.row
2649 };
2650 contiguous_row_selections.push(selections.next().unwrap().clone());
2651 } else {
2652 break;
2653 }
2654 }
2655
2656 // Move the text spanned by the row range to be after the last line of the row range
2657 if end_row <= buffer.max_point().row {
2658 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2659 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2660
2661 // Don't move lines across excerpt boundaries
2662 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2663 let mut text = String::from("\n");
2664 text.extend(buffer.text_for_range(range_to_move.clone()));
2665 text.pop(); // Drop trailing newline
2666 edits.push((
2667 buffer.anchor_after(range_to_move.start)
2668 ..buffer.anchor_before(range_to_move.end),
2669 String::new(),
2670 ));
2671 let insertion_anchor = buffer.anchor_after(insertion_point);
2672 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2673
2674 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2675
2676 // Move selections down
2677 new_selections.extend(contiguous_row_selections.drain(..).map(
2678 |mut selection| {
2679 selection.start.row += row_delta;
2680 selection.end.row += row_delta;
2681 selection
2682 },
2683 ));
2684
2685 // Move folds down
2686 unfold_ranges.push(range_to_move.clone());
2687 for fold in display_map.folds_in_range(
2688 buffer.anchor_before(range_to_move.start)
2689 ..buffer.anchor_after(range_to_move.end),
2690 ) {
2691 let mut start = fold.start.to_point(&buffer);
2692 let mut end = fold.end.to_point(&buffer);
2693 start.row += row_delta;
2694 end.row += row_delta;
2695 refold_ranges.push(start..end);
2696 }
2697 }
2698 }
2699
2700 // If we didn't move line(s), preserve the existing selections
2701 new_selections.extend(contiguous_row_selections.drain(..));
2702 }
2703
2704 self.start_transaction(cx);
2705 self.unfold_ranges(unfold_ranges, cx);
2706 self.buffer.update(cx, |buffer, cx| {
2707 for (range, text) in edits {
2708 buffer.edit([range], text, cx);
2709 }
2710 });
2711 self.fold_ranges(refold_ranges, cx);
2712 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2713 self.end_transaction(cx);
2714 }
2715
2716 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2717 self.start_transaction(cx);
2718 let mut text = String::new();
2719 let mut selections = self.local_selections::<Point>(cx);
2720 let mut clipboard_selections = Vec::with_capacity(selections.len());
2721 {
2722 let buffer = self.buffer.read(cx).read(cx);
2723 let max_point = buffer.max_point();
2724 for selection in &mut selections {
2725 let is_entire_line = selection.is_empty();
2726 if is_entire_line {
2727 selection.start = Point::new(selection.start.row, 0);
2728 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2729 selection.goal = SelectionGoal::None;
2730 }
2731 let mut len = 0;
2732 for chunk in buffer.text_for_range(selection.start..selection.end) {
2733 text.push_str(chunk);
2734 len += chunk.len();
2735 }
2736 clipboard_selections.push(ClipboardSelection {
2737 len,
2738 is_entire_line,
2739 });
2740 }
2741 }
2742 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2743 self.insert("", cx);
2744 self.end_transaction(cx);
2745
2746 cx.as_mut()
2747 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2748 }
2749
2750 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2751 let selections = self.local_selections::<Point>(cx);
2752 let mut text = String::new();
2753 let mut clipboard_selections = Vec::with_capacity(selections.len());
2754 {
2755 let buffer = self.buffer.read(cx).read(cx);
2756 let max_point = buffer.max_point();
2757 for selection in selections.iter() {
2758 let mut start = selection.start;
2759 let mut end = selection.end;
2760 let is_entire_line = selection.is_empty();
2761 if is_entire_line {
2762 start = Point::new(start.row, 0);
2763 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2764 }
2765 let mut len = 0;
2766 for chunk in buffer.text_for_range(start..end) {
2767 text.push_str(chunk);
2768 len += chunk.len();
2769 }
2770 clipboard_selections.push(ClipboardSelection {
2771 len,
2772 is_entire_line,
2773 });
2774 }
2775 }
2776
2777 cx.as_mut()
2778 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2779 }
2780
2781 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2782 if let Some(item) = cx.as_mut().read_from_clipboard() {
2783 let clipboard_text = item.text();
2784 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2785 let mut selections = self.local_selections::<usize>(cx);
2786 let all_selections_were_entire_line =
2787 clipboard_selections.iter().all(|s| s.is_entire_line);
2788 if clipboard_selections.len() != selections.len() {
2789 clipboard_selections.clear();
2790 }
2791
2792 let mut delta = 0_isize;
2793 let mut start_offset = 0;
2794 for (i, selection) in selections.iter_mut().enumerate() {
2795 let to_insert;
2796 let entire_line;
2797 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2798 let end_offset = start_offset + clipboard_selection.len;
2799 to_insert = &clipboard_text[start_offset..end_offset];
2800 entire_line = clipboard_selection.is_entire_line;
2801 start_offset = end_offset
2802 } else {
2803 to_insert = clipboard_text.as_str();
2804 entire_line = all_selections_were_entire_line;
2805 }
2806
2807 selection.start = (selection.start as isize + delta) as usize;
2808 selection.end = (selection.end as isize + delta) as usize;
2809
2810 self.buffer.update(cx, |buffer, cx| {
2811 // If the corresponding selection was empty when this slice of the
2812 // clipboard text was written, then the entire line containing the
2813 // selection was copied. If this selection is also currently empty,
2814 // then paste the line before the current line of the buffer.
2815 let range = if selection.is_empty() && entire_line {
2816 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2817 let line_start = selection.start - column;
2818 line_start..line_start
2819 } else {
2820 selection.start..selection.end
2821 };
2822
2823 delta += to_insert.len() as isize - range.len() as isize;
2824 buffer.edit([range], to_insert, cx);
2825 selection.start += to_insert.len();
2826 selection.end = selection.start;
2827 });
2828 }
2829 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2830 } else {
2831 self.insert(clipboard_text, cx);
2832 }
2833 }
2834 }
2835
2836 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2837 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2838 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2839 self.set_selections(selections, cx);
2840 }
2841 self.request_autoscroll(Autoscroll::Fit, cx);
2842 }
2843 }
2844
2845 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2846 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2847 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2848 self.set_selections(selections, cx);
2849 }
2850 self.request_autoscroll(Autoscroll::Fit, cx);
2851 }
2852 }
2853
2854 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2855 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2856 let mut selections = self.local_selections::<Point>(cx);
2857 for selection in &mut selections {
2858 let start = selection.start.to_display_point(&display_map);
2859 let end = selection.end.to_display_point(&display_map);
2860
2861 if start != end {
2862 selection.end = selection.start.clone();
2863 } else {
2864 let cursor = movement::left(&display_map, start)
2865 .unwrap()
2866 .to_point(&display_map);
2867 selection.start = cursor.clone();
2868 selection.end = cursor;
2869 }
2870 selection.reversed = false;
2871 selection.goal = SelectionGoal::None;
2872 }
2873 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2874 }
2875
2876 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2877 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2878 let mut selections = self.local_selections::<Point>(cx);
2879 for selection in &mut selections {
2880 let head = selection.head().to_display_point(&display_map);
2881 let cursor = movement::left(&display_map, head)
2882 .unwrap()
2883 .to_point(&display_map);
2884 selection.set_head(cursor);
2885 selection.goal = SelectionGoal::None;
2886 }
2887 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2888 }
2889
2890 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2891 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2892 let mut selections = self.local_selections::<Point>(cx);
2893 for selection in &mut selections {
2894 let start = selection.start.to_display_point(&display_map);
2895 let end = selection.end.to_display_point(&display_map);
2896
2897 if start != end {
2898 selection.start = selection.end.clone();
2899 } else {
2900 let cursor = movement::right(&display_map, end)
2901 .unwrap()
2902 .to_point(&display_map);
2903 selection.start = cursor;
2904 selection.end = cursor;
2905 }
2906 selection.reversed = false;
2907 selection.goal = SelectionGoal::None;
2908 }
2909 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2910 }
2911
2912 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2913 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2914 let mut selections = self.local_selections::<Point>(cx);
2915 for selection in &mut selections {
2916 let head = selection.head().to_display_point(&display_map);
2917 let cursor = movement::right(&display_map, head)
2918 .unwrap()
2919 .to_point(&display_map);
2920 selection.set_head(cursor);
2921 selection.goal = SelectionGoal::None;
2922 }
2923 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2924 }
2925
2926 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2927 if let Some(context_menu) = self.context_menu.as_mut() {
2928 if context_menu.select_prev(cx) {
2929 return;
2930 }
2931 }
2932
2933 if matches!(self.mode, EditorMode::SingleLine) {
2934 cx.propagate_action();
2935 return;
2936 }
2937
2938 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2939 let mut selections = self.local_selections::<Point>(cx);
2940 for selection in &mut selections {
2941 let start = selection.start.to_display_point(&display_map);
2942 let end = selection.end.to_display_point(&display_map);
2943 if start != end {
2944 selection.goal = SelectionGoal::None;
2945 }
2946
2947 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2948 let cursor = start.to_point(&display_map);
2949 selection.start = cursor;
2950 selection.end = cursor;
2951 selection.goal = goal;
2952 selection.reversed = false;
2953 }
2954 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2955 }
2956
2957 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2958 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2959 let mut selections = self.local_selections::<Point>(cx);
2960 for selection in &mut selections {
2961 let head = selection.head().to_display_point(&display_map);
2962 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2963 let cursor = head.to_point(&display_map);
2964 selection.set_head(cursor);
2965 selection.goal = goal;
2966 }
2967 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2968 }
2969
2970 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2971 if let Some(context_menu) = self.context_menu.as_mut() {
2972 if context_menu.select_next(cx) {
2973 return;
2974 }
2975 }
2976
2977 if matches!(self.mode, EditorMode::SingleLine) {
2978 cx.propagate_action();
2979 return;
2980 }
2981
2982 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2983 let mut selections = self.local_selections::<Point>(cx);
2984 for selection in &mut selections {
2985 let start = selection.start.to_display_point(&display_map);
2986 let end = selection.end.to_display_point(&display_map);
2987 if start != end {
2988 selection.goal = SelectionGoal::None;
2989 }
2990
2991 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2992 let cursor = start.to_point(&display_map);
2993 selection.start = cursor;
2994 selection.end = cursor;
2995 selection.goal = goal;
2996 selection.reversed = false;
2997 }
2998 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2999 }
3000
3001 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3002 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3003 let mut selections = self.local_selections::<Point>(cx);
3004 for selection in &mut selections {
3005 let head = selection.head().to_display_point(&display_map);
3006 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3007 let cursor = head.to_point(&display_map);
3008 selection.set_head(cursor);
3009 selection.goal = goal;
3010 }
3011 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3012 }
3013
3014 pub fn move_to_previous_word_boundary(
3015 &mut self,
3016 _: &MoveToPreviousWordBoundary,
3017 cx: &mut ViewContext<Self>,
3018 ) {
3019 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3020 let mut selections = self.local_selections::<Point>(cx);
3021 for selection in &mut selections {
3022 let head = selection.head().to_display_point(&display_map);
3023 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3024 selection.start = cursor.clone();
3025 selection.end = cursor;
3026 selection.reversed = false;
3027 selection.goal = SelectionGoal::None;
3028 }
3029 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3030 }
3031
3032 pub fn select_to_previous_word_boundary(
3033 &mut self,
3034 _: &SelectToPreviousWordBoundary,
3035 cx: &mut ViewContext<Self>,
3036 ) {
3037 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3038 let mut selections = self.local_selections::<Point>(cx);
3039 for selection in &mut selections {
3040 let head = selection.head().to_display_point(&display_map);
3041 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3042 selection.set_head(cursor);
3043 selection.goal = SelectionGoal::None;
3044 }
3045 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3046 }
3047
3048 pub fn delete_to_previous_word_boundary(
3049 &mut self,
3050 _: &DeleteToPreviousWordBoundary,
3051 cx: &mut ViewContext<Self>,
3052 ) {
3053 self.start_transaction(cx);
3054 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3055 let mut selections = self.local_selections::<Point>(cx);
3056 for selection in &mut selections {
3057 if selection.is_empty() {
3058 let head = selection.head().to_display_point(&display_map);
3059 let cursor =
3060 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3061 selection.set_head(cursor);
3062 selection.goal = SelectionGoal::None;
3063 }
3064 }
3065 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3066 self.insert("", cx);
3067 self.end_transaction(cx);
3068 }
3069
3070 pub fn move_to_next_word_boundary(
3071 &mut self,
3072 _: &MoveToNextWordBoundary,
3073 cx: &mut ViewContext<Self>,
3074 ) {
3075 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3076 let mut selections = self.local_selections::<Point>(cx);
3077 for selection in &mut selections {
3078 let head = selection.head().to_display_point(&display_map);
3079 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3080 selection.start = cursor;
3081 selection.end = cursor;
3082 selection.reversed = false;
3083 selection.goal = SelectionGoal::None;
3084 }
3085 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3086 }
3087
3088 pub fn select_to_next_word_boundary(
3089 &mut self,
3090 _: &SelectToNextWordBoundary,
3091 cx: &mut ViewContext<Self>,
3092 ) {
3093 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3094 let mut selections = self.local_selections::<Point>(cx);
3095 for selection in &mut selections {
3096 let head = selection.head().to_display_point(&display_map);
3097 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3098 selection.set_head(cursor);
3099 selection.goal = SelectionGoal::None;
3100 }
3101 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3102 }
3103
3104 pub fn delete_to_next_word_boundary(
3105 &mut self,
3106 _: &DeleteToNextWordBoundary,
3107 cx: &mut ViewContext<Self>,
3108 ) {
3109 self.start_transaction(cx);
3110 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3111 let mut selections = self.local_selections::<Point>(cx);
3112 for selection in &mut selections {
3113 if selection.is_empty() {
3114 let head = selection.head().to_display_point(&display_map);
3115 let cursor =
3116 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3117 selection.set_head(cursor);
3118 selection.goal = SelectionGoal::None;
3119 }
3120 }
3121 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3122 self.insert("", cx);
3123 self.end_transaction(cx);
3124 }
3125
3126 pub fn move_to_beginning_of_line(
3127 &mut self,
3128 _: &MoveToBeginningOfLine,
3129 cx: &mut ViewContext<Self>,
3130 ) {
3131 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3132 let mut selections = self.local_selections::<Point>(cx);
3133 for selection in &mut selections {
3134 let head = selection.head().to_display_point(&display_map);
3135 let new_head = movement::line_beginning(&display_map, head, true);
3136 let cursor = new_head.to_point(&display_map);
3137 selection.start = cursor;
3138 selection.end = cursor;
3139 selection.reversed = false;
3140 selection.goal = SelectionGoal::None;
3141 }
3142 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3143 }
3144
3145 pub fn select_to_beginning_of_line(
3146 &mut self,
3147 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3148 cx: &mut ViewContext<Self>,
3149 ) {
3150 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3151 let mut selections = self.local_selections::<Point>(cx);
3152 for selection in &mut selections {
3153 let head = selection.head().to_display_point(&display_map);
3154 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3155 selection.set_head(new_head.to_point(&display_map));
3156 selection.goal = SelectionGoal::None;
3157 }
3158 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3159 }
3160
3161 pub fn delete_to_beginning_of_line(
3162 &mut self,
3163 _: &DeleteToBeginningOfLine,
3164 cx: &mut ViewContext<Self>,
3165 ) {
3166 self.start_transaction(cx);
3167 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3168 self.backspace(&Backspace, cx);
3169 self.end_transaction(cx);
3170 }
3171
3172 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3173 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3174 let mut selections = self.local_selections::<Point>(cx);
3175 {
3176 for selection in &mut selections {
3177 let head = selection.head().to_display_point(&display_map);
3178 let new_head = movement::line_end(&display_map, head, true);
3179 let anchor = new_head.to_point(&display_map);
3180 selection.start = anchor.clone();
3181 selection.end = anchor;
3182 selection.reversed = false;
3183 selection.goal = SelectionGoal::None;
3184 }
3185 }
3186 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3187 }
3188
3189 pub fn select_to_end_of_line(
3190 &mut self,
3191 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3192 cx: &mut ViewContext<Self>,
3193 ) {
3194 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3195 let mut selections = self.local_selections::<Point>(cx);
3196 for selection in &mut selections {
3197 let head = selection.head().to_display_point(&display_map);
3198 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3199 selection.set_head(new_head.to_point(&display_map));
3200 selection.goal = SelectionGoal::None;
3201 }
3202 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3203 }
3204
3205 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3206 self.start_transaction(cx);
3207 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3208 self.delete(&Delete, cx);
3209 self.end_transaction(cx);
3210 }
3211
3212 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3213 self.start_transaction(cx);
3214 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3215 self.cut(&Cut, cx);
3216 self.end_transaction(cx);
3217 }
3218
3219 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3220 if matches!(self.mode, EditorMode::SingleLine) {
3221 cx.propagate_action();
3222 return;
3223 }
3224
3225 let selection = Selection {
3226 id: post_inc(&mut self.next_selection_id),
3227 start: 0,
3228 end: 0,
3229 reversed: false,
3230 goal: SelectionGoal::None,
3231 };
3232 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3233 }
3234
3235 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3236 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3237 selection.set_head(Point::zero());
3238 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3239 }
3240
3241 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3242 if matches!(self.mode, EditorMode::SingleLine) {
3243 cx.propagate_action();
3244 return;
3245 }
3246
3247 let cursor = self.buffer.read(cx).read(cx).len();
3248 let selection = Selection {
3249 id: post_inc(&mut self.next_selection_id),
3250 start: cursor,
3251 end: cursor,
3252 reversed: false,
3253 goal: SelectionGoal::None,
3254 };
3255 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3256 }
3257
3258 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3259 self.nav_history = nav_history;
3260 }
3261
3262 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3263 self.nav_history.as_ref()
3264 }
3265
3266 fn push_to_nav_history(
3267 &self,
3268 position: Anchor,
3269 new_position: Option<Point>,
3270 cx: &mut ViewContext<Self>,
3271 ) {
3272 if let Some(nav_history) = &self.nav_history {
3273 let buffer = self.buffer.read(cx).read(cx);
3274 let offset = position.to_offset(&buffer);
3275 let point = position.to_point(&buffer);
3276 drop(buffer);
3277
3278 if let Some(new_position) = new_position {
3279 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3280 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3281 return;
3282 }
3283 }
3284
3285 nav_history.push(Some(NavigationData {
3286 anchor: position,
3287 offset,
3288 }));
3289 }
3290 }
3291
3292 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3293 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3294 selection.set_head(self.buffer.read(cx).read(cx).len());
3295 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3296 }
3297
3298 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3299 let selection = Selection {
3300 id: post_inc(&mut self.next_selection_id),
3301 start: 0,
3302 end: self.buffer.read(cx).read(cx).len(),
3303 reversed: false,
3304 goal: SelectionGoal::None,
3305 };
3306 self.update_selections(vec![selection], None, cx);
3307 }
3308
3309 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3310 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3311 let mut selections = self.local_selections::<Point>(cx);
3312 let max_point = display_map.buffer_snapshot.max_point();
3313 for selection in &mut selections {
3314 let rows = selection.spanned_rows(true, &display_map);
3315 selection.start = Point::new(rows.start, 0);
3316 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3317 selection.reversed = false;
3318 }
3319 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3320 }
3321
3322 pub fn split_selection_into_lines(
3323 &mut self,
3324 _: &SplitSelectionIntoLines,
3325 cx: &mut ViewContext<Self>,
3326 ) {
3327 let mut to_unfold = Vec::new();
3328 let mut new_selections = Vec::new();
3329 {
3330 let selections = self.local_selections::<Point>(cx);
3331 let buffer = self.buffer.read(cx).read(cx);
3332 for selection in selections {
3333 for row in selection.start.row..selection.end.row {
3334 let cursor = Point::new(row, buffer.line_len(row));
3335 new_selections.push(Selection {
3336 id: post_inc(&mut self.next_selection_id),
3337 start: cursor,
3338 end: cursor,
3339 reversed: false,
3340 goal: SelectionGoal::None,
3341 });
3342 }
3343 new_selections.push(Selection {
3344 id: selection.id,
3345 start: selection.end,
3346 end: selection.end,
3347 reversed: false,
3348 goal: SelectionGoal::None,
3349 });
3350 to_unfold.push(selection.start..selection.end);
3351 }
3352 }
3353 self.unfold_ranges(to_unfold, cx);
3354 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3355 }
3356
3357 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3358 self.add_selection(true, cx);
3359 }
3360
3361 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3362 self.add_selection(false, cx);
3363 }
3364
3365 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3367 let mut selections = self.local_selections::<Point>(cx);
3368 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3369 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3370 let range = oldest_selection.display_range(&display_map).sorted();
3371 let columns = cmp::min(range.start.column(), range.end.column())
3372 ..cmp::max(range.start.column(), range.end.column());
3373
3374 selections.clear();
3375 let mut stack = Vec::new();
3376 for row in range.start.row()..=range.end.row() {
3377 if let Some(selection) = self.build_columnar_selection(
3378 &display_map,
3379 row,
3380 &columns,
3381 oldest_selection.reversed,
3382 ) {
3383 stack.push(selection.id);
3384 selections.push(selection);
3385 }
3386 }
3387
3388 if above {
3389 stack.reverse();
3390 }
3391
3392 AddSelectionsState { above, stack }
3393 });
3394
3395 let last_added_selection = *state.stack.last().unwrap();
3396 let mut new_selections = Vec::new();
3397 if above == state.above {
3398 let end_row = if above {
3399 0
3400 } else {
3401 display_map.max_point().row()
3402 };
3403
3404 'outer: for selection in selections {
3405 if selection.id == last_added_selection {
3406 let range = selection.display_range(&display_map).sorted();
3407 debug_assert_eq!(range.start.row(), range.end.row());
3408 let mut row = range.start.row();
3409 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3410 {
3411 start..end
3412 } else {
3413 cmp::min(range.start.column(), range.end.column())
3414 ..cmp::max(range.start.column(), range.end.column())
3415 };
3416
3417 while row != end_row {
3418 if above {
3419 row -= 1;
3420 } else {
3421 row += 1;
3422 }
3423
3424 if let Some(new_selection) = self.build_columnar_selection(
3425 &display_map,
3426 row,
3427 &columns,
3428 selection.reversed,
3429 ) {
3430 state.stack.push(new_selection.id);
3431 if above {
3432 new_selections.push(new_selection);
3433 new_selections.push(selection);
3434 } else {
3435 new_selections.push(selection);
3436 new_selections.push(new_selection);
3437 }
3438
3439 continue 'outer;
3440 }
3441 }
3442 }
3443
3444 new_selections.push(selection);
3445 }
3446 } else {
3447 new_selections = selections;
3448 new_selections.retain(|s| s.id != last_added_selection);
3449 state.stack.pop();
3450 }
3451
3452 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3453 if state.stack.len() > 1 {
3454 self.add_selections_state = Some(state);
3455 }
3456 }
3457
3458 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3459 let replace_newest = action.0;
3460 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3461 let buffer = &display_map.buffer_snapshot;
3462 let mut selections = self.local_selections::<usize>(cx);
3463 if let Some(mut select_next_state) = self.select_next_state.take() {
3464 let query = &select_next_state.query;
3465 if !select_next_state.done {
3466 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3467 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3468 let mut next_selected_range = None;
3469
3470 let bytes_after_last_selection =
3471 buffer.bytes_in_range(last_selection.end..buffer.len());
3472 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3473 let query_matches = query
3474 .stream_find_iter(bytes_after_last_selection)
3475 .map(|result| (last_selection.end, result))
3476 .chain(
3477 query
3478 .stream_find_iter(bytes_before_first_selection)
3479 .map(|result| (0, result)),
3480 );
3481 for (start_offset, query_match) in query_matches {
3482 let query_match = query_match.unwrap(); // can only fail due to I/O
3483 let offset_range =
3484 start_offset + query_match.start()..start_offset + query_match.end();
3485 let display_range = offset_range.start.to_display_point(&display_map)
3486 ..offset_range.end.to_display_point(&display_map);
3487
3488 if !select_next_state.wordwise
3489 || (!movement::is_inside_word(&display_map, display_range.start)
3490 && !movement::is_inside_word(&display_map, display_range.end))
3491 {
3492 next_selected_range = Some(offset_range);
3493 break;
3494 }
3495 }
3496
3497 if let Some(next_selected_range) = next_selected_range {
3498 if replace_newest {
3499 if let Some(newest_id) =
3500 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3501 {
3502 selections.retain(|s| s.id != newest_id);
3503 }
3504 }
3505 selections.push(Selection {
3506 id: post_inc(&mut self.next_selection_id),
3507 start: next_selected_range.start,
3508 end: next_selected_range.end,
3509 reversed: false,
3510 goal: SelectionGoal::None,
3511 });
3512 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3513 } else {
3514 select_next_state.done = true;
3515 }
3516 }
3517
3518 self.select_next_state = Some(select_next_state);
3519 } else if selections.len() == 1 {
3520 let selection = selections.last_mut().unwrap();
3521 if selection.start == selection.end {
3522 let word_range = movement::surrounding_word(
3523 &display_map,
3524 selection.start.to_display_point(&display_map),
3525 );
3526 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3527 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3528 selection.goal = SelectionGoal::None;
3529 selection.reversed = false;
3530
3531 let query = buffer
3532 .text_for_range(selection.start..selection.end)
3533 .collect::<String>();
3534 let select_state = SelectNextState {
3535 query: AhoCorasick::new_auto_configured(&[query]),
3536 wordwise: true,
3537 done: false,
3538 };
3539 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3540 self.select_next_state = Some(select_state);
3541 } else {
3542 let query = buffer
3543 .text_for_range(selection.start..selection.end)
3544 .collect::<String>();
3545 self.select_next_state = Some(SelectNextState {
3546 query: AhoCorasick::new_auto_configured(&[query]),
3547 wordwise: false,
3548 done: false,
3549 });
3550 self.select_next(action, cx);
3551 }
3552 }
3553 }
3554
3555 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3556 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3557 // as that portion won't be used for detecting if a line is a comment.
3558 let full_comment_prefix =
3559 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3560 prefix.to_string()
3561 } else {
3562 return;
3563 };
3564 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3565 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3566
3567 self.start_transaction(cx);
3568 let mut selections = self.local_selections::<Point>(cx);
3569 let mut all_selection_lines_are_comments = true;
3570 let mut edit_ranges = Vec::new();
3571 let mut last_toggled_row = None;
3572 self.buffer.update(cx, |buffer, cx| {
3573 for selection in &mut selections {
3574 edit_ranges.clear();
3575 let snapshot = buffer.snapshot(cx);
3576
3577 let end_row =
3578 if selection.end.row > selection.start.row && selection.end.column == 0 {
3579 selection.end.row
3580 } else {
3581 selection.end.row + 1
3582 };
3583
3584 for row in selection.start.row..end_row {
3585 // If multiple selections contain a given row, avoid processing that
3586 // row more than once.
3587 if last_toggled_row == Some(row) {
3588 continue;
3589 } else {
3590 last_toggled_row = Some(row);
3591 }
3592
3593 if snapshot.is_line_blank(row) {
3594 continue;
3595 }
3596
3597 let start = Point::new(row, snapshot.indent_column_for_line(row));
3598 let mut line_bytes = snapshot
3599 .bytes_in_range(start..snapshot.max_point())
3600 .flatten()
3601 .copied();
3602
3603 // If this line currently begins with the line comment prefix, then record
3604 // the range containing the prefix.
3605 if all_selection_lines_are_comments
3606 && line_bytes
3607 .by_ref()
3608 .take(comment_prefix.len())
3609 .eq(comment_prefix.bytes())
3610 {
3611 // Include any whitespace that matches the comment prefix.
3612 let matching_whitespace_len = line_bytes
3613 .zip(comment_prefix_whitespace.bytes())
3614 .take_while(|(a, b)| a == b)
3615 .count() as u32;
3616 let end = Point::new(
3617 row,
3618 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3619 );
3620 edit_ranges.push(start..end);
3621 }
3622 // If this line does not begin with the line comment prefix, then record
3623 // the position where the prefix should be inserted.
3624 else {
3625 all_selection_lines_are_comments = false;
3626 edit_ranges.push(start..start);
3627 }
3628 }
3629
3630 if !edit_ranges.is_empty() {
3631 if all_selection_lines_are_comments {
3632 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3633 } else {
3634 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3635 let edit_ranges = edit_ranges.iter().map(|range| {
3636 let position = Point::new(range.start.row, min_column);
3637 position..position
3638 });
3639 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3640 }
3641 }
3642 }
3643 });
3644
3645 self.update_selections(
3646 self.local_selections::<usize>(cx),
3647 Some(Autoscroll::Fit),
3648 cx,
3649 );
3650 self.end_transaction(cx);
3651 }
3652
3653 pub fn select_larger_syntax_node(
3654 &mut self,
3655 _: &SelectLargerSyntaxNode,
3656 cx: &mut ViewContext<Self>,
3657 ) {
3658 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3659 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3660 let buffer = self.buffer.read(cx).snapshot(cx);
3661
3662 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3663 let mut selected_larger_node = false;
3664 let new_selections = old_selections
3665 .iter()
3666 .map(|selection| {
3667 let old_range = selection.start..selection.end;
3668 let mut new_range = old_range.clone();
3669 while let Some(containing_range) =
3670 buffer.range_for_syntax_ancestor(new_range.clone())
3671 {
3672 new_range = containing_range;
3673 if !display_map.intersects_fold(new_range.start)
3674 && !display_map.intersects_fold(new_range.end)
3675 {
3676 break;
3677 }
3678 }
3679
3680 selected_larger_node |= new_range != old_range;
3681 Selection {
3682 id: selection.id,
3683 start: new_range.start,
3684 end: new_range.end,
3685 goal: SelectionGoal::None,
3686 reversed: selection.reversed,
3687 }
3688 })
3689 .collect::<Vec<_>>();
3690
3691 if selected_larger_node {
3692 stack.push(old_selections);
3693 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3694 }
3695 self.select_larger_syntax_node_stack = stack;
3696 }
3697
3698 pub fn select_smaller_syntax_node(
3699 &mut self,
3700 _: &SelectSmallerSyntaxNode,
3701 cx: &mut ViewContext<Self>,
3702 ) {
3703 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3704 if let Some(selections) = stack.pop() {
3705 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3706 }
3707 self.select_larger_syntax_node_stack = stack;
3708 }
3709
3710 pub fn move_to_enclosing_bracket(
3711 &mut self,
3712 _: &MoveToEnclosingBracket,
3713 cx: &mut ViewContext<Self>,
3714 ) {
3715 let mut selections = self.local_selections::<usize>(cx);
3716 let buffer = self.buffer.read(cx).snapshot(cx);
3717 for selection in &mut selections {
3718 if let Some((open_range, close_range)) =
3719 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3720 {
3721 let close_range = close_range.to_inclusive();
3722 let destination = if close_range.contains(&selection.start)
3723 && close_range.contains(&selection.end)
3724 {
3725 open_range.end
3726 } else {
3727 *close_range.start()
3728 };
3729 selection.start = destination;
3730 selection.end = destination;
3731 }
3732 }
3733
3734 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3735 }
3736
3737 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3738 let buffer = self.buffer.read(cx).snapshot(cx);
3739 let selection = self.newest_selection::<usize>(&buffer);
3740 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3741 active_diagnostics
3742 .primary_range
3743 .to_offset(&buffer)
3744 .to_inclusive()
3745 });
3746 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3747 if active_primary_range.contains(&selection.head()) {
3748 *active_primary_range.end()
3749 } else {
3750 selection.head()
3751 }
3752 } else {
3753 selection.head()
3754 };
3755
3756 loop {
3757 let next_group = buffer
3758 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3759 .find_map(|entry| {
3760 if entry.diagnostic.is_primary
3761 && !entry.range.is_empty()
3762 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3763 {
3764 Some((entry.range, entry.diagnostic.group_id))
3765 } else {
3766 None
3767 }
3768 });
3769
3770 if let Some((primary_range, group_id)) = next_group {
3771 self.activate_diagnostics(group_id, cx);
3772 self.update_selections(
3773 vec![Selection {
3774 id: selection.id,
3775 start: primary_range.start,
3776 end: primary_range.start,
3777 reversed: false,
3778 goal: SelectionGoal::None,
3779 }],
3780 Some(Autoscroll::Center),
3781 cx,
3782 );
3783 break;
3784 } else if search_start == 0 {
3785 break;
3786 } else {
3787 // Cycle around to the start of the buffer, potentially moving back to the start of
3788 // the currently active diagnostic.
3789 search_start = 0;
3790 active_primary_range.take();
3791 }
3792 }
3793 }
3794
3795 pub fn go_to_definition(
3796 workspace: &mut Workspace,
3797 _: &GoToDefinition,
3798 cx: &mut ViewContext<Workspace>,
3799 ) {
3800 let active_item = workspace.active_item(cx);
3801 let editor_handle = if let Some(editor) = active_item
3802 .as_ref()
3803 .and_then(|item| item.act_as::<Self>(cx))
3804 {
3805 editor
3806 } else {
3807 return;
3808 };
3809
3810 let editor = editor_handle.read(cx);
3811 let buffer = editor.buffer.read(cx);
3812 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3813 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3814 let definitions = workspace
3815 .project()
3816 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3817 cx.spawn(|workspace, mut cx| async move {
3818 let definitions = definitions.await?;
3819 workspace.update(&mut cx, |workspace, cx| {
3820 for definition in definitions {
3821 let range = definition
3822 .target_range
3823 .to_offset(definition.target_buffer.read(cx));
3824 let target_editor_handle = workspace
3825 .open_item(BufferItemHandle(definition.target_buffer), cx)
3826 .downcast::<Self>()
3827 .unwrap();
3828
3829 target_editor_handle.update(cx, |target_editor, cx| {
3830 // When selecting a definition in a different buffer, disable the nav history
3831 // to avoid creating a history entry at the previous cursor location.
3832 let disabled_history = if editor_handle == target_editor_handle {
3833 None
3834 } else {
3835 target_editor.nav_history.take()
3836 };
3837 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3838 if disabled_history.is_some() {
3839 target_editor.nav_history = disabled_history;
3840 }
3841 });
3842 }
3843 });
3844
3845 Ok::<(), anyhow::Error>(())
3846 })
3847 .detach_and_log_err(cx);
3848 }
3849
3850 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3851 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3852 let buffer = self.buffer.read(cx).snapshot(cx);
3853 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3854 let is_valid = buffer
3855 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3856 .any(|entry| {
3857 entry.diagnostic.is_primary
3858 && !entry.range.is_empty()
3859 && entry.range.start == primary_range_start
3860 && entry.diagnostic.message == active_diagnostics.primary_message
3861 });
3862
3863 if is_valid != active_diagnostics.is_valid {
3864 active_diagnostics.is_valid = is_valid;
3865 let mut new_styles = HashMap::default();
3866 for (block_id, diagnostic) in &active_diagnostics.blocks {
3867 new_styles.insert(
3868 *block_id,
3869 diagnostic_block_renderer(
3870 diagnostic.clone(),
3871 is_valid,
3872 self.build_settings.clone(),
3873 ),
3874 );
3875 }
3876 self.display_map
3877 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3878 }
3879 }
3880 }
3881
3882 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3883 self.dismiss_diagnostics(cx);
3884 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3885 let buffer = self.buffer.read(cx).snapshot(cx);
3886
3887 let mut primary_range = None;
3888 let mut primary_message = None;
3889 let mut group_end = Point::zero();
3890 let diagnostic_group = buffer
3891 .diagnostic_group::<Point>(group_id)
3892 .map(|entry| {
3893 if entry.range.end > group_end {
3894 group_end = entry.range.end;
3895 }
3896 if entry.diagnostic.is_primary {
3897 primary_range = Some(entry.range.clone());
3898 primary_message = Some(entry.diagnostic.message.clone());
3899 }
3900 entry
3901 })
3902 .collect::<Vec<_>>();
3903 let primary_range = primary_range.unwrap();
3904 let primary_message = primary_message.unwrap();
3905 let primary_range =
3906 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3907
3908 let blocks = display_map
3909 .insert_blocks(
3910 diagnostic_group.iter().map(|entry| {
3911 let build_settings = self.build_settings.clone();
3912 let diagnostic = entry.diagnostic.clone();
3913 let message_height = diagnostic.message.lines().count() as u8;
3914
3915 BlockProperties {
3916 position: buffer.anchor_after(entry.range.start),
3917 height: message_height,
3918 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3919 disposition: BlockDisposition::Below,
3920 }
3921 }),
3922 cx,
3923 )
3924 .into_iter()
3925 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3926 .collect();
3927
3928 Some(ActiveDiagnosticGroup {
3929 primary_range,
3930 primary_message,
3931 blocks,
3932 is_valid: true,
3933 })
3934 });
3935 }
3936
3937 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3938 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3939 self.display_map.update(cx, |display_map, cx| {
3940 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3941 });
3942 cx.notify();
3943 }
3944 }
3945
3946 fn build_columnar_selection(
3947 &mut self,
3948 display_map: &DisplaySnapshot,
3949 row: u32,
3950 columns: &Range<u32>,
3951 reversed: bool,
3952 ) -> Option<Selection<Point>> {
3953 let is_empty = columns.start == columns.end;
3954 let line_len = display_map.line_len(row);
3955 if columns.start < line_len || (is_empty && columns.start == line_len) {
3956 let start = DisplayPoint::new(row, columns.start);
3957 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3958 Some(Selection {
3959 id: post_inc(&mut self.next_selection_id),
3960 start: start.to_point(display_map),
3961 end: end.to_point(display_map),
3962 reversed,
3963 goal: SelectionGoal::ColumnRange {
3964 start: columns.start,
3965 end: columns.end,
3966 },
3967 })
3968 } else {
3969 None
3970 }
3971 }
3972
3973 pub fn local_selections_in_range(
3974 &self,
3975 range: Range<Anchor>,
3976 display_map: &DisplaySnapshot,
3977 ) -> Vec<Selection<Point>> {
3978 let buffer = &display_map.buffer_snapshot;
3979
3980 let start_ix = match self
3981 .selections
3982 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3983 {
3984 Ok(ix) | Err(ix) => ix,
3985 };
3986 let end_ix = match self
3987 .selections
3988 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3989 {
3990 Ok(ix) => ix + 1,
3991 Err(ix) => ix,
3992 };
3993
3994 fn point_selection(
3995 selection: &Selection<Anchor>,
3996 buffer: &MultiBufferSnapshot,
3997 ) -> Selection<Point> {
3998 let start = selection.start.to_point(&buffer);
3999 let end = selection.end.to_point(&buffer);
4000 Selection {
4001 id: selection.id,
4002 start,
4003 end,
4004 reversed: selection.reversed,
4005 goal: selection.goal,
4006 }
4007 }
4008
4009 self.selections[start_ix..end_ix]
4010 .iter()
4011 .chain(
4012 self.pending_selection
4013 .as_ref()
4014 .map(|pending| &pending.selection),
4015 )
4016 .map(|s| point_selection(s, &buffer))
4017 .collect()
4018 }
4019
4020 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4021 where
4022 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4023 {
4024 let buffer = self.buffer.read(cx).snapshot(cx);
4025 let mut selections = self
4026 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4027 .peekable();
4028
4029 let mut pending_selection = self.pending_selection::<D>(&buffer);
4030
4031 iter::from_fn(move || {
4032 if let Some(pending) = pending_selection.as_mut() {
4033 while let Some(next_selection) = selections.peek() {
4034 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4035 let next_selection = selections.next().unwrap();
4036 if next_selection.start < pending.start {
4037 pending.start = next_selection.start;
4038 }
4039 if next_selection.end > pending.end {
4040 pending.end = next_selection.end;
4041 }
4042 } else if next_selection.end < pending.start {
4043 return selections.next();
4044 } else {
4045 break;
4046 }
4047 }
4048
4049 pending_selection.take()
4050 } else {
4051 selections.next()
4052 }
4053 })
4054 .collect()
4055 }
4056
4057 fn resolve_selections<'a, D, I>(
4058 &self,
4059 selections: I,
4060 snapshot: &MultiBufferSnapshot,
4061 ) -> impl 'a + Iterator<Item = Selection<D>>
4062 where
4063 D: TextDimension + Ord + Sub<D, Output = D>,
4064 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4065 {
4066 let (to_summarize, selections) = selections.into_iter().tee();
4067 let mut summaries = snapshot
4068 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4069 .into_iter();
4070 selections.map(move |s| Selection {
4071 id: s.id,
4072 start: summaries.next().unwrap(),
4073 end: summaries.next().unwrap(),
4074 reversed: s.reversed,
4075 goal: s.goal,
4076 })
4077 }
4078
4079 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4080 &self,
4081 snapshot: &MultiBufferSnapshot,
4082 ) -> Option<Selection<D>> {
4083 self.pending_selection
4084 .as_ref()
4085 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4086 }
4087
4088 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4089 &self,
4090 selection: &Selection<Anchor>,
4091 buffer: &MultiBufferSnapshot,
4092 ) -> Selection<D> {
4093 Selection {
4094 id: selection.id,
4095 start: selection.start.summary::<D>(&buffer),
4096 end: selection.end.summary::<D>(&buffer),
4097 reversed: selection.reversed,
4098 goal: selection.goal,
4099 }
4100 }
4101
4102 fn selection_count<'a>(&self) -> usize {
4103 let mut count = self.selections.len();
4104 if self.pending_selection.is_some() {
4105 count += 1;
4106 }
4107 count
4108 }
4109
4110 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4111 &self,
4112 snapshot: &MultiBufferSnapshot,
4113 ) -> Selection<D> {
4114 self.selections
4115 .iter()
4116 .min_by_key(|s| s.id)
4117 .map(|selection| self.resolve_selection(selection, snapshot))
4118 .or_else(|| self.pending_selection(snapshot))
4119 .unwrap()
4120 }
4121
4122 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4123 &self,
4124 snapshot: &MultiBufferSnapshot,
4125 ) -> Selection<D> {
4126 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4127 }
4128
4129 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4130 self.pending_selection
4131 .as_ref()
4132 .map(|s| &s.selection)
4133 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4134 }
4135
4136 pub fn update_selections<T>(
4137 &mut self,
4138 mut selections: Vec<Selection<T>>,
4139 autoscroll: Option<Autoscroll>,
4140 cx: &mut ViewContext<Self>,
4141 ) where
4142 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4143 {
4144 let buffer = self.buffer.read(cx).snapshot(cx);
4145 selections.sort_unstable_by_key(|s| s.start);
4146
4147 // Merge overlapping selections.
4148 let mut i = 1;
4149 while i < selections.len() {
4150 if selections[i - 1].end >= selections[i].start {
4151 let removed = selections.remove(i);
4152 if removed.start < selections[i - 1].start {
4153 selections[i - 1].start = removed.start;
4154 }
4155 if removed.end > selections[i - 1].end {
4156 selections[i - 1].end = removed.end;
4157 }
4158 } else {
4159 i += 1;
4160 }
4161 }
4162
4163 if let Some(autoscroll) = autoscroll {
4164 self.request_autoscroll(autoscroll, cx);
4165 }
4166
4167 self.set_selections(
4168 Arc::from_iter(selections.into_iter().map(|selection| {
4169 let end_bias = if selection.end > selection.start {
4170 Bias::Left
4171 } else {
4172 Bias::Right
4173 };
4174 Selection {
4175 id: selection.id,
4176 start: buffer.anchor_after(selection.start),
4177 end: buffer.anchor_at(selection.end, end_bias),
4178 reversed: selection.reversed,
4179 goal: selection.goal,
4180 }
4181 })),
4182 cx,
4183 );
4184 }
4185
4186 /// Compute new ranges for any selections that were located in excerpts that have
4187 /// since been removed.
4188 ///
4189 /// Returns a `HashMap` indicating which selections whose former head position
4190 /// was no longer present. The keys of the map are selection ids. The values are
4191 /// the id of the new excerpt where the head of the selection has been moved.
4192 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4193 let snapshot = self.buffer.read(cx).read(cx);
4194 let anchors_with_status = snapshot.refresh_anchors(
4195 self.selections
4196 .iter()
4197 .flat_map(|selection| [&selection.start, &selection.end]),
4198 );
4199 let offsets =
4200 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4201 let offsets = offsets.chunks(2);
4202 let statuses = anchors_with_status
4203 .chunks(2)
4204 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4205
4206 let mut selections_with_lost_position = HashMap::default();
4207 let new_selections = offsets
4208 .zip(statuses)
4209 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4210 let selection = &self.selections[selection_ix];
4211 let kept_head = if selection.reversed {
4212 kept_start
4213 } else {
4214 kept_end
4215 };
4216 if !kept_head {
4217 selections_with_lost_position
4218 .insert(selection.id, selection.head().excerpt_id.clone());
4219 }
4220
4221 Selection {
4222 id: selection.id,
4223 start: offsets[0],
4224 end: offsets[1],
4225 reversed: selection.reversed,
4226 goal: selection.goal,
4227 }
4228 })
4229 .collect();
4230 drop(snapshot);
4231 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4232 selections_with_lost_position
4233 }
4234
4235 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4236 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4237 self.selections = selections;
4238 if self.focused {
4239 self.buffer.update(cx, |buffer, cx| {
4240 buffer.set_active_selections(&self.selections, cx)
4241 });
4242 }
4243
4244 let buffer = self.buffer.read(cx).snapshot(cx);
4245 self.pending_selection = None;
4246 self.add_selections_state = None;
4247 self.select_next_state = None;
4248 self.select_larger_syntax_node_stack.clear();
4249 self.autoclose_stack.invalidate(&self.selections, &buffer);
4250 self.snippet_stack.invalidate(&self.selections, &buffer);
4251
4252 let new_cursor_position = self
4253 .selections
4254 .iter()
4255 .max_by_key(|s| s.id)
4256 .map(|s| s.head());
4257 if let Some(old_cursor_position) = old_cursor_position {
4258 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4259 self.push_to_nav_history(
4260 old_cursor_position,
4261 Some(new_cursor_position.to_point(&buffer)),
4262 cx,
4263 );
4264 }
4265 }
4266
4267 let completion_menu = match self.context_menu.as_mut() {
4268 Some(ContextMenu::Completions(menu)) => Some(menu),
4269 _ => {
4270 self.context_menu.take();
4271 None
4272 }
4273 };
4274
4275 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4276 let cursor_position = cursor_position.to_offset(&buffer);
4277 let (word_range, kind) =
4278 buffer.surrounding_word(completion_menu.initial_position.clone());
4279 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4280 {
4281 let query = Self::completion_query(&buffer, cursor_position);
4282 cx.background()
4283 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4284 self.show_completions(&ShowCompletions, cx);
4285 } else {
4286 self.hide_context_menu(cx);
4287 }
4288 }
4289
4290 self.pause_cursor_blinking(cx);
4291 cx.emit(Event::SelectionsChanged);
4292 }
4293
4294 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4295 self.autoscroll_request = Some(autoscroll);
4296 cx.notify();
4297 }
4298
4299 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4300 self.start_transaction_at(Instant::now(), cx);
4301 }
4302
4303 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4304 self.end_selection(cx);
4305 if let Some(tx_id) = self
4306 .buffer
4307 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4308 {
4309 self.selection_history
4310 .insert(tx_id, (self.selections.clone(), None));
4311 }
4312 }
4313
4314 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4315 self.end_transaction_at(Instant::now(), cx);
4316 }
4317
4318 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4319 if let Some(tx_id) = self
4320 .buffer
4321 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4322 {
4323 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4324 *end_selections = Some(self.selections.clone());
4325 } else {
4326 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4327 }
4328 }
4329 }
4330
4331 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4332 log::info!("Editor::page_up");
4333 }
4334
4335 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4336 log::info!("Editor::page_down");
4337 }
4338
4339 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4340 let mut fold_ranges = Vec::new();
4341
4342 let selections = self.local_selections::<Point>(cx);
4343 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4344 for selection in selections {
4345 let range = selection.display_range(&display_map).sorted();
4346 let buffer_start_row = range.start.to_point(&display_map).row;
4347
4348 for row in (0..=range.end.row()).rev() {
4349 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4350 let fold_range = self.foldable_range_for_line(&display_map, row);
4351 if fold_range.end.row >= buffer_start_row {
4352 fold_ranges.push(fold_range);
4353 if row <= range.start.row() {
4354 break;
4355 }
4356 }
4357 }
4358 }
4359 }
4360
4361 self.fold_ranges(fold_ranges, cx);
4362 }
4363
4364 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4365 let selections = self.local_selections::<Point>(cx);
4366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4367 let buffer = &display_map.buffer_snapshot;
4368 let ranges = selections
4369 .iter()
4370 .map(|s| {
4371 let range = s.display_range(&display_map).sorted();
4372 let mut start = range.start.to_point(&display_map);
4373 let mut end = range.end.to_point(&display_map);
4374 start.column = 0;
4375 end.column = buffer.line_len(end.row);
4376 start..end
4377 })
4378 .collect::<Vec<_>>();
4379 self.unfold_ranges(ranges, cx);
4380 }
4381
4382 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4383 let max_point = display_map.max_point();
4384 if display_row >= max_point.row() {
4385 false
4386 } else {
4387 let (start_indent, is_blank) = display_map.line_indent(display_row);
4388 if is_blank {
4389 false
4390 } else {
4391 for display_row in display_row + 1..=max_point.row() {
4392 let (indent, is_blank) = display_map.line_indent(display_row);
4393 if !is_blank {
4394 return indent > start_indent;
4395 }
4396 }
4397 false
4398 }
4399 }
4400 }
4401
4402 fn foldable_range_for_line(
4403 &self,
4404 display_map: &DisplaySnapshot,
4405 start_row: u32,
4406 ) -> Range<Point> {
4407 let max_point = display_map.max_point();
4408
4409 let (start_indent, _) = display_map.line_indent(start_row);
4410 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4411 let mut end = None;
4412 for row in start_row + 1..=max_point.row() {
4413 let (indent, is_blank) = display_map.line_indent(row);
4414 if !is_blank && indent <= start_indent {
4415 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4416 break;
4417 }
4418 }
4419
4420 let end = end.unwrap_or(max_point);
4421 return start.to_point(display_map)..end.to_point(display_map);
4422 }
4423
4424 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4425 let selections = self.local_selections::<Point>(cx);
4426 let ranges = selections.into_iter().map(|s| s.start..s.end);
4427 self.fold_ranges(ranges, cx);
4428 }
4429
4430 fn fold_ranges<T: ToOffset>(
4431 &mut self,
4432 ranges: impl IntoIterator<Item = Range<T>>,
4433 cx: &mut ViewContext<Self>,
4434 ) {
4435 let mut ranges = ranges.into_iter().peekable();
4436 if ranges.peek().is_some() {
4437 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4438 self.request_autoscroll(Autoscroll::Fit, cx);
4439 cx.notify();
4440 }
4441 }
4442
4443 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4444 if !ranges.is_empty() {
4445 self.display_map
4446 .update(cx, |map, cx| map.unfold(ranges, cx));
4447 self.request_autoscroll(Autoscroll::Fit, cx);
4448 cx.notify();
4449 }
4450 }
4451
4452 pub fn insert_blocks(
4453 &mut self,
4454 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4455 cx: &mut ViewContext<Self>,
4456 ) -> Vec<BlockId> {
4457 let blocks = self
4458 .display_map
4459 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4460 self.request_autoscroll(Autoscroll::Fit, cx);
4461 blocks
4462 }
4463
4464 pub fn replace_blocks(
4465 &mut self,
4466 blocks: HashMap<BlockId, RenderBlock>,
4467 cx: &mut ViewContext<Self>,
4468 ) {
4469 self.display_map
4470 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4471 self.request_autoscroll(Autoscroll::Fit, cx);
4472 }
4473
4474 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4475 self.display_map.update(cx, |display_map, cx| {
4476 display_map.remove_blocks(block_ids, cx)
4477 });
4478 }
4479
4480 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4481 self.display_map
4482 .update(cx, |map, cx| map.snapshot(cx))
4483 .longest_row()
4484 }
4485
4486 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4487 self.display_map
4488 .update(cx, |map, cx| map.snapshot(cx))
4489 .max_point()
4490 }
4491
4492 pub fn text(&self, cx: &AppContext) -> String {
4493 self.buffer.read(cx).read(cx).text()
4494 }
4495
4496 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4497 self.display_map
4498 .update(cx, |map, cx| map.snapshot(cx))
4499 .text()
4500 }
4501
4502 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4503 self.display_map
4504 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4505 }
4506
4507 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4508 self.highlighted_rows = rows;
4509 }
4510
4511 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4512 self.highlighted_rows.clone()
4513 }
4514
4515 pub fn highlight_ranges<T: 'static>(
4516 &mut self,
4517 ranges: Vec<Range<Anchor>>,
4518 color: Color,
4519 cx: &mut ViewContext<Self>,
4520 ) {
4521 self.highlighted_ranges
4522 .insert(TypeId::of::<T>(), (color, ranges));
4523 cx.notify();
4524 }
4525
4526 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4527 self.highlighted_ranges.remove(&TypeId::of::<T>());
4528 cx.notify();
4529 }
4530
4531 #[cfg(feature = "test-support")]
4532 pub fn all_highlighted_ranges(
4533 &mut self,
4534 cx: &mut ViewContext<Self>,
4535 ) -> Vec<(Range<DisplayPoint>, Color)> {
4536 let snapshot = self.snapshot(cx);
4537 let buffer = &snapshot.buffer_snapshot;
4538 let start = buffer.anchor_before(0);
4539 let end = buffer.anchor_after(buffer.len());
4540 self.highlighted_ranges_in_range(start..end, &snapshot)
4541 }
4542
4543 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4544 self.highlighted_ranges
4545 .get(&TypeId::of::<T>())
4546 .map(|(color, ranges)| (*color, ranges.as_slice()))
4547 }
4548
4549 pub fn highlighted_ranges_in_range(
4550 &self,
4551 search_range: Range<Anchor>,
4552 display_snapshot: &DisplaySnapshot,
4553 ) -> Vec<(Range<DisplayPoint>, Color)> {
4554 let mut results = Vec::new();
4555 let buffer = &display_snapshot.buffer_snapshot;
4556 for (color, ranges) in self.highlighted_ranges.values() {
4557 let start_ix = match ranges.binary_search_by(|probe| {
4558 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4559 if cmp.is_gt() {
4560 Ordering::Greater
4561 } else {
4562 Ordering::Less
4563 }
4564 }) {
4565 Ok(i) | Err(i) => i,
4566 };
4567 for range in &ranges[start_ix..] {
4568 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4569 break;
4570 }
4571 let start = range
4572 .start
4573 .to_point(buffer)
4574 .to_display_point(display_snapshot);
4575 let end = range
4576 .end
4577 .to_point(buffer)
4578 .to_display_point(display_snapshot);
4579 results.push((start..end, *color))
4580 }
4581 }
4582 results
4583 }
4584
4585 fn next_blink_epoch(&mut self) -> usize {
4586 self.blink_epoch += 1;
4587 self.blink_epoch
4588 }
4589
4590 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4591 if !self.focused {
4592 return;
4593 }
4594
4595 self.show_local_cursors = true;
4596 cx.notify();
4597
4598 let epoch = self.next_blink_epoch();
4599 cx.spawn(|this, mut cx| {
4600 let this = this.downgrade();
4601 async move {
4602 Timer::after(CURSOR_BLINK_INTERVAL).await;
4603 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4604 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4605 }
4606 }
4607 })
4608 .detach();
4609 }
4610
4611 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4612 if epoch == self.blink_epoch {
4613 self.blinking_paused = false;
4614 self.blink_cursors(epoch, cx);
4615 }
4616 }
4617
4618 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4619 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4620 self.show_local_cursors = !self.show_local_cursors;
4621 cx.notify();
4622
4623 let epoch = self.next_blink_epoch();
4624 cx.spawn(|this, mut cx| {
4625 let this = this.downgrade();
4626 async move {
4627 Timer::after(CURSOR_BLINK_INTERVAL).await;
4628 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4629 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4630 }
4631 }
4632 })
4633 .detach();
4634 }
4635 }
4636
4637 pub fn show_local_cursors(&self) -> bool {
4638 self.show_local_cursors
4639 }
4640
4641 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4642 self.refresh_active_diagnostics(cx);
4643 cx.notify();
4644 }
4645
4646 fn on_buffer_event(
4647 &mut self,
4648 _: ModelHandle<MultiBuffer>,
4649 event: &language::Event,
4650 cx: &mut ViewContext<Self>,
4651 ) {
4652 match event {
4653 language::Event::Edited => cx.emit(Event::Edited),
4654 language::Event::Dirtied => cx.emit(Event::Dirtied),
4655 language::Event::Saved => cx.emit(Event::Saved),
4656 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4657 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4658 language::Event::Closed => cx.emit(Event::Closed),
4659 _ => {}
4660 }
4661 }
4662
4663 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4664 cx.notify();
4665 }
4666}
4667
4668impl EditorSnapshot {
4669 pub fn is_focused(&self) -> bool {
4670 self.is_focused
4671 }
4672
4673 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4674 self.placeholder_text.as_ref()
4675 }
4676
4677 pub fn scroll_position(&self) -> Vector2F {
4678 compute_scroll_position(
4679 &self.display_snapshot,
4680 self.scroll_position,
4681 &self.scroll_top_anchor,
4682 )
4683 }
4684}
4685
4686impl Deref for EditorSnapshot {
4687 type Target = DisplaySnapshot;
4688
4689 fn deref(&self) -> &Self::Target {
4690 &self.display_snapshot
4691 }
4692}
4693
4694impl EditorSettings {
4695 #[cfg(any(test, feature = "test-support"))]
4696 pub fn test(cx: &AppContext) -> Self {
4697 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4698
4699 Self {
4700 tab_size: 4,
4701 soft_wrap: SoftWrap::None,
4702 style: {
4703 let font_cache: &gpui::FontCache = cx.font_cache();
4704 let font_family_name = Arc::from("Monaco");
4705 let font_properties = Default::default();
4706 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4707 let font_id = font_cache
4708 .select_font(font_family_id, &font_properties)
4709 .unwrap();
4710 let text = gpui::fonts::TextStyle {
4711 font_family_name,
4712 font_family_id,
4713 font_id,
4714 font_size: 14.,
4715 color: gpui::color::Color::from_u32(0xff0000ff),
4716 font_properties,
4717 underline: None,
4718 };
4719 let default_diagnostic_style = DiagnosticStyle {
4720 message: text.clone().into(),
4721 header: Default::default(),
4722 text_scale_factor: 1.,
4723 };
4724 EditorStyle {
4725 text: text.clone(),
4726 placeholder_text: None,
4727 background: Default::default(),
4728 gutter_background: Default::default(),
4729 gutter_padding_factor: 2.,
4730 active_line_background: Default::default(),
4731 highlighted_line_background: Default::default(),
4732 line_number: Default::default(),
4733 line_number_active: Default::default(),
4734 selection: Default::default(),
4735 guest_selections: Default::default(),
4736 syntax: Default::default(),
4737 diagnostic_path_header: DiagnosticPathHeader {
4738 container: Default::default(),
4739 filename: ContainedText {
4740 container: Default::default(),
4741 text: text.clone(),
4742 },
4743 path: ContainedText {
4744 container: Default::default(),
4745 text: text.clone(),
4746 },
4747 text_scale_factor: 1.,
4748 },
4749 diagnostic_header: DiagnosticHeader {
4750 container: Default::default(),
4751 message: ContainedLabel {
4752 container: Default::default(),
4753 label: text.clone().into(),
4754 },
4755 code: ContainedText {
4756 container: Default::default(),
4757 text: text.clone(),
4758 },
4759 icon_width_factor: 1.,
4760 text_scale_factor: 1.,
4761 },
4762 error_diagnostic: default_diagnostic_style.clone(),
4763 invalid_error_diagnostic: default_diagnostic_style.clone(),
4764 warning_diagnostic: default_diagnostic_style.clone(),
4765 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4766 information_diagnostic: default_diagnostic_style.clone(),
4767 invalid_information_diagnostic: default_diagnostic_style.clone(),
4768 hint_diagnostic: default_diagnostic_style.clone(),
4769 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4770 autocomplete: Default::default(),
4771 }
4772 },
4773 }
4774 }
4775}
4776
4777fn compute_scroll_position(
4778 snapshot: &DisplaySnapshot,
4779 mut scroll_position: Vector2F,
4780 scroll_top_anchor: &Option<Anchor>,
4781) -> Vector2F {
4782 if let Some(anchor) = scroll_top_anchor {
4783 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4784 scroll_position.set_y(scroll_top + scroll_position.y());
4785 } else {
4786 scroll_position.set_y(0.);
4787 }
4788 scroll_position
4789}
4790
4791#[derive(Copy, Clone)]
4792pub enum Event {
4793 Activate,
4794 Edited,
4795 Blurred,
4796 Dirtied,
4797 Saved,
4798 TitleChanged,
4799 SelectionsChanged,
4800 Closed,
4801}
4802
4803impl Entity for Editor {
4804 type Event = Event;
4805}
4806
4807impl View for Editor {
4808 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4809 let settings = (self.build_settings)(cx);
4810 self.display_map.update(cx, |map, cx| {
4811 map.set_font(
4812 settings.style.text.font_id,
4813 settings.style.text.font_size,
4814 cx,
4815 )
4816 });
4817 EditorElement::new(self.handle.clone(), settings).boxed()
4818 }
4819
4820 fn ui_name() -> &'static str {
4821 "Editor"
4822 }
4823
4824 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4825 self.focused = true;
4826 self.blink_cursors(self.blink_epoch, cx);
4827 self.buffer.update(cx, |buffer, cx| {
4828 buffer.avoid_grouping_next_transaction(cx);
4829 buffer.set_active_selections(&self.selections, cx)
4830 });
4831 }
4832
4833 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4834 self.focused = false;
4835 self.show_local_cursors = false;
4836 self.buffer
4837 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4838 self.hide_context_menu(cx);
4839 cx.emit(Event::Blurred);
4840 cx.notify();
4841 }
4842
4843 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4844 let mut cx = Self::default_keymap_context();
4845 let mode = match self.mode {
4846 EditorMode::SingleLine => "single_line",
4847 EditorMode::AutoHeight { .. } => "auto_height",
4848 EditorMode::Full => "full",
4849 };
4850 cx.map.insert("mode".into(), mode.into());
4851 match self.context_menu.as_ref() {
4852 Some(ContextMenu::Completions(_)) => {
4853 cx.set.insert("showing_completions".into());
4854 }
4855 Some(ContextMenu::CodeActions(_)) => {
4856 cx.set.insert("showing_code_actions".into());
4857 }
4858 None => {}
4859 }
4860 cx
4861 }
4862}
4863
4864impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4865 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4866 let start = self.start.to_point(buffer);
4867 let end = self.end.to_point(buffer);
4868 if self.reversed {
4869 end..start
4870 } else {
4871 start..end
4872 }
4873 }
4874
4875 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4876 let start = self.start.to_offset(buffer);
4877 let end = self.end.to_offset(buffer);
4878 if self.reversed {
4879 end..start
4880 } else {
4881 start..end
4882 }
4883 }
4884
4885 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4886 let start = self
4887 .start
4888 .to_point(&map.buffer_snapshot)
4889 .to_display_point(map);
4890 let end = self
4891 .end
4892 .to_point(&map.buffer_snapshot)
4893 .to_display_point(map);
4894 if self.reversed {
4895 end..start
4896 } else {
4897 start..end
4898 }
4899 }
4900
4901 fn spanned_rows(
4902 &self,
4903 include_end_if_at_line_start: bool,
4904 map: &DisplaySnapshot,
4905 ) -> Range<u32> {
4906 let start = self.start.to_point(&map.buffer_snapshot);
4907 let mut end = self.end.to_point(&map.buffer_snapshot);
4908 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4909 end.row -= 1;
4910 }
4911
4912 let buffer_start = map.prev_line_boundary(start).0;
4913 let buffer_end = map.next_line_boundary(end).0;
4914 buffer_start.row..buffer_end.row + 1
4915 }
4916}
4917
4918impl<T: InvalidationRegion> InvalidationStack<T> {
4919 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4920 where
4921 S: Clone + ToOffset,
4922 {
4923 while let Some(region) = self.last() {
4924 let all_selections_inside_invalidation_ranges =
4925 if selections.len() == region.ranges().len() {
4926 selections
4927 .iter()
4928 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4929 .all(|(selection, invalidation_range)| {
4930 let head = selection.head().to_offset(&buffer);
4931 invalidation_range.start <= head && invalidation_range.end >= head
4932 })
4933 } else {
4934 false
4935 };
4936
4937 if all_selections_inside_invalidation_ranges {
4938 break;
4939 } else {
4940 self.pop();
4941 }
4942 }
4943 }
4944}
4945
4946impl<T> Default for InvalidationStack<T> {
4947 fn default() -> Self {
4948 Self(Default::default())
4949 }
4950}
4951
4952impl<T> Deref for InvalidationStack<T> {
4953 type Target = Vec<T>;
4954
4955 fn deref(&self) -> &Self::Target {
4956 &self.0
4957 }
4958}
4959
4960impl<T> DerefMut for InvalidationStack<T> {
4961 fn deref_mut(&mut self) -> &mut Self::Target {
4962 &mut self.0
4963 }
4964}
4965
4966impl InvalidationRegion for BracketPairState {
4967 fn ranges(&self) -> &[Range<Anchor>] {
4968 &self.ranges
4969 }
4970}
4971
4972impl InvalidationRegion for SnippetState {
4973 fn ranges(&self) -> &[Range<Anchor>] {
4974 &self.ranges[self.active_index]
4975 }
4976}
4977
4978pub fn diagnostic_block_renderer(
4979 diagnostic: Diagnostic,
4980 is_valid: bool,
4981 build_settings: BuildSettings,
4982) -> RenderBlock {
4983 let mut highlighted_lines = Vec::new();
4984 for line in diagnostic.message.lines() {
4985 highlighted_lines.push(highlight_diagnostic_message(line));
4986 }
4987
4988 Arc::new(move |cx: &BlockContext| {
4989 let settings = build_settings(cx);
4990 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
4991 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
4992 Flex::column()
4993 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
4994 Label::new(
4995 line.clone(),
4996 style.message.clone().with_font_size(font_size),
4997 )
4998 .with_highlights(highlights.clone())
4999 .contained()
5000 .with_margin_left(cx.anchor_x)
5001 .boxed()
5002 }))
5003 .aligned()
5004 .left()
5005 .boxed()
5006 })
5007}
5008
5009pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5010 let mut message_without_backticks = String::new();
5011 let mut prev_offset = 0;
5012 let mut inside_block = false;
5013 let mut highlights = Vec::new();
5014 for (match_ix, (offset, _)) in message
5015 .match_indices('`')
5016 .chain([(message.len(), "")])
5017 .enumerate()
5018 {
5019 message_without_backticks.push_str(&message[prev_offset..offset]);
5020 if inside_block {
5021 highlights.extend(prev_offset - match_ix..offset - match_ix);
5022 }
5023
5024 inside_block = !inside_block;
5025 prev_offset = offset + 1;
5026 }
5027
5028 (message_without_backticks, highlights)
5029}
5030
5031pub fn diagnostic_style(
5032 severity: DiagnosticSeverity,
5033 valid: bool,
5034 style: &EditorStyle,
5035) -> DiagnosticStyle {
5036 match (severity, valid) {
5037 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5038 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5039 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5040 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5041 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5042 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5043 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5044 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5045 _ => DiagnosticStyle {
5046 message: style.text.clone().into(),
5047 header: Default::default(),
5048 text_scale_factor: 1.,
5049 },
5050 }
5051}
5052
5053pub fn settings_builder(
5054 buffer: WeakModelHandle<MultiBuffer>,
5055 settings: watch::Receiver<workspace::Settings>,
5056) -> BuildSettings {
5057 Arc::new(move |cx| {
5058 let settings = settings.borrow();
5059 let font_cache = cx.font_cache();
5060 let font_family_id = settings.buffer_font_family;
5061 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5062 let font_properties = Default::default();
5063 let font_id = font_cache
5064 .select_font(font_family_id, &font_properties)
5065 .unwrap();
5066 let font_size = settings.buffer_font_size;
5067
5068 let mut theme = settings.theme.editor.clone();
5069 theme.text = TextStyle {
5070 color: theme.text.color,
5071 font_family_name,
5072 font_family_id,
5073 font_id,
5074 font_size,
5075 font_properties,
5076 underline: None,
5077 };
5078 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5079 let soft_wrap = match settings.soft_wrap(language) {
5080 workspace::settings::SoftWrap::None => SoftWrap::None,
5081 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5082 workspace::settings::SoftWrap::PreferredLineLength => {
5083 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5084 }
5085 };
5086
5087 EditorSettings {
5088 tab_size: settings.tab_size,
5089 soft_wrap,
5090 style: theme,
5091 }
5092 })
5093}
5094
5095pub fn combine_syntax_and_fuzzy_match_highlights(
5096 text: &str,
5097 default_style: HighlightStyle,
5098 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5099 match_indices: &[usize],
5100) -> Vec<(Range<usize>, HighlightStyle)> {
5101 let mut result = Vec::new();
5102 let mut match_indices = match_indices.iter().copied().peekable();
5103
5104 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5105 {
5106 syntax_highlight.font_properties.weight(Default::default());
5107
5108 // Add highlights for any fuzzy match characters before the next
5109 // syntax highlight range.
5110 while let Some(&match_index) = match_indices.peek() {
5111 if match_index >= range.start {
5112 break;
5113 }
5114 match_indices.next();
5115 let end_index = char_ix_after(match_index, text);
5116 let mut match_style = default_style;
5117 match_style.font_properties.weight(fonts::Weight::BOLD);
5118 result.push((match_index..end_index, match_style));
5119 }
5120
5121 if range.start == usize::MAX {
5122 break;
5123 }
5124
5125 // Add highlights for any fuzzy match characters within the
5126 // syntax highlight range.
5127 let mut offset = range.start;
5128 while let Some(&match_index) = match_indices.peek() {
5129 if match_index >= range.end {
5130 break;
5131 }
5132
5133 match_indices.next();
5134 if match_index > offset {
5135 result.push((offset..match_index, syntax_highlight));
5136 }
5137
5138 let mut end_index = char_ix_after(match_index, text);
5139 while let Some(&next_match_index) = match_indices.peek() {
5140 if next_match_index == end_index && next_match_index < range.end {
5141 end_index = char_ix_after(next_match_index, text);
5142 match_indices.next();
5143 } else {
5144 break;
5145 }
5146 }
5147
5148 let mut match_style = syntax_highlight;
5149 match_style.font_properties.weight(fonts::Weight::BOLD);
5150 result.push((match_index..end_index, match_style));
5151 offset = end_index;
5152 }
5153
5154 if offset < range.end {
5155 result.push((offset..range.end, syntax_highlight));
5156 }
5157 }
5158
5159 fn char_ix_after(ix: usize, text: &str) -> usize {
5160 ix + text[ix..].chars().next().unwrap().len_utf8()
5161 }
5162
5163 result
5164}
5165
5166fn styled_runs_for_completion_label<'a>(
5167 label: &'a CompletionLabel,
5168 default_color: Color,
5169 syntax_theme: &'a theme::SyntaxTheme,
5170) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5171 const MUTED_OPACITY: usize = 165;
5172
5173 let mut muted_default_style = HighlightStyle {
5174 color: default_color,
5175 ..Default::default()
5176 };
5177 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5178
5179 let mut prev_end = label.filter_range.end;
5180 label
5181 .runs
5182 .iter()
5183 .enumerate()
5184 .flat_map(move |(ix, (range, highlight_id))| {
5185 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5186 style
5187 } else {
5188 return Default::default();
5189 };
5190 let mut muted_style = style.clone();
5191 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5192
5193 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5194 if range.start >= label.filter_range.end {
5195 if range.start > prev_end {
5196 runs.push((prev_end..range.start, muted_default_style));
5197 }
5198 runs.push((range.clone(), muted_style));
5199 } else if range.end <= label.filter_range.end {
5200 runs.push((range.clone(), style));
5201 } else {
5202 runs.push((range.start..label.filter_range.end, style));
5203 runs.push((label.filter_range.end..range.end, muted_style));
5204 }
5205 prev_end = cmp::max(prev_end, range.end);
5206
5207 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5208 runs.push((prev_end..label.text.len(), muted_default_style));
5209 }
5210
5211 runs
5212 })
5213}
5214
5215#[cfg(test)]
5216mod tests {
5217 use super::*;
5218 use language::{FakeFile, LanguageConfig};
5219 use lsp::FakeLanguageServer;
5220 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
5221 use text::Point;
5222 use unindent::Unindent;
5223 use util::test::sample_text;
5224
5225 #[gpui::test]
5226 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5227 let mut now = Instant::now();
5228 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5229 let group_interval = buffer.read(cx).transaction_group_interval();
5230 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5231 let settings = EditorSettings::test(cx);
5232 let (_, editor) = cx.add_window(Default::default(), |cx| {
5233 build_editor(buffer.clone(), settings, cx)
5234 });
5235
5236 editor.update(cx, |editor, cx| {
5237 editor.start_transaction_at(now, cx);
5238 editor.select_ranges([2..4], None, cx);
5239 editor.insert("cd", cx);
5240 editor.end_transaction_at(now, cx);
5241 assert_eq!(editor.text(cx), "12cd56");
5242 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5243
5244 editor.start_transaction_at(now, cx);
5245 editor.select_ranges([4..5], None, cx);
5246 editor.insert("e", cx);
5247 editor.end_transaction_at(now, cx);
5248 assert_eq!(editor.text(cx), "12cde6");
5249 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5250
5251 now += group_interval + Duration::from_millis(1);
5252 editor.select_ranges([2..2], None, cx);
5253
5254 // Simulate an edit in another editor
5255 buffer.update(cx, |buffer, cx| {
5256 buffer.start_transaction_at(now, cx);
5257 buffer.edit([0..1], "a", cx);
5258 buffer.edit([1..1], "b", cx);
5259 buffer.end_transaction_at(now, cx);
5260 });
5261
5262 assert_eq!(editor.text(cx), "ab2cde6");
5263 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5264
5265 // Last transaction happened past the group interval in a different editor.
5266 // Undo it individually and don't restore selections.
5267 editor.undo(&Undo, cx);
5268 assert_eq!(editor.text(cx), "12cde6");
5269 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5270
5271 // First two transactions happened within the group interval in this editor.
5272 // Undo them together and restore selections.
5273 editor.undo(&Undo, cx);
5274 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5275 assert_eq!(editor.text(cx), "123456");
5276 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5277
5278 // Redo the first two transactions together.
5279 editor.redo(&Redo, cx);
5280 assert_eq!(editor.text(cx), "12cde6");
5281 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5282
5283 // Redo the last transaction on its own.
5284 editor.redo(&Redo, cx);
5285 assert_eq!(editor.text(cx), "ab2cde6");
5286 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5287
5288 // Test empty transactions.
5289 editor.start_transaction_at(now, cx);
5290 editor.end_transaction_at(now, cx);
5291 editor.undo(&Undo, cx);
5292 assert_eq!(editor.text(cx), "12cde6");
5293 });
5294 }
5295
5296 #[gpui::test]
5297 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5298 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5299 let settings = EditorSettings::test(cx);
5300 let (_, editor) =
5301 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5302
5303 editor.update(cx, |view, cx| {
5304 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5305 });
5306
5307 assert_eq!(
5308 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5309 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5310 );
5311
5312 editor.update(cx, |view, cx| {
5313 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5314 });
5315
5316 assert_eq!(
5317 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5318 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5319 );
5320
5321 editor.update(cx, |view, cx| {
5322 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5323 });
5324
5325 assert_eq!(
5326 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5327 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5328 );
5329
5330 editor.update(cx, |view, cx| {
5331 view.end_selection(cx);
5332 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5333 });
5334
5335 assert_eq!(
5336 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5337 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5338 );
5339
5340 editor.update(cx, |view, cx| {
5341 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5342 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5343 });
5344
5345 assert_eq!(
5346 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5347 [
5348 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5349 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5350 ]
5351 );
5352
5353 editor.update(cx, |view, cx| {
5354 view.end_selection(cx);
5355 });
5356
5357 assert_eq!(
5358 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5359 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5360 );
5361 }
5362
5363 #[gpui::test]
5364 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5365 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5366 let settings = EditorSettings::test(cx);
5367 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5368
5369 view.update(cx, |view, cx| {
5370 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5371 assert_eq!(
5372 view.selected_display_ranges(cx),
5373 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5374 );
5375 });
5376
5377 view.update(cx, |view, cx| {
5378 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5379 assert_eq!(
5380 view.selected_display_ranges(cx),
5381 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5382 );
5383 });
5384
5385 view.update(cx, |view, cx| {
5386 view.cancel(&Cancel, cx);
5387 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5388 assert_eq!(
5389 view.selected_display_ranges(cx),
5390 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5391 );
5392 });
5393 }
5394
5395 #[gpui::test]
5396 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5397 cx.add_window(Default::default(), |cx| {
5398 use workspace::ItemView;
5399 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5400 let settings = EditorSettings::test(&cx);
5401 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5402 let mut editor = build_editor(buffer.clone(), settings, cx);
5403 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5404
5405 // Move the cursor a small distance.
5406 // Nothing is added to the navigation history.
5407 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5408 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5409 assert!(nav_history.borrow_mut().pop_backward().is_none());
5410
5411 // Move the cursor a large distance.
5412 // The history can jump back to the previous position.
5413 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5414 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5415 editor.navigate(nav_entry.data.unwrap(), cx);
5416 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5417 assert_eq!(
5418 editor.selected_display_ranges(cx),
5419 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5420 );
5421
5422 // Move the cursor a small distance via the mouse.
5423 // Nothing is added to the navigation history.
5424 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5425 editor.end_selection(cx);
5426 assert_eq!(
5427 editor.selected_display_ranges(cx),
5428 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5429 );
5430 assert!(nav_history.borrow_mut().pop_backward().is_none());
5431
5432 // Move the cursor a large distance via the mouse.
5433 // The history can jump back to the previous position.
5434 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5435 editor.end_selection(cx);
5436 assert_eq!(
5437 editor.selected_display_ranges(cx),
5438 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5439 );
5440 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5441 editor.navigate(nav_entry.data.unwrap(), cx);
5442 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5443 assert_eq!(
5444 editor.selected_display_ranges(cx),
5445 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5446 );
5447
5448 editor
5449 });
5450 }
5451
5452 #[gpui::test]
5453 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5454 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5455 let settings = EditorSettings::test(cx);
5456 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5457
5458 view.update(cx, |view, cx| {
5459 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5460 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5461 view.end_selection(cx);
5462
5463 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5464 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5465 view.end_selection(cx);
5466 assert_eq!(
5467 view.selected_display_ranges(cx),
5468 [
5469 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5470 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5471 ]
5472 );
5473 });
5474
5475 view.update(cx, |view, cx| {
5476 view.cancel(&Cancel, cx);
5477 assert_eq!(
5478 view.selected_display_ranges(cx),
5479 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5480 );
5481 });
5482
5483 view.update(cx, |view, cx| {
5484 view.cancel(&Cancel, cx);
5485 assert_eq!(
5486 view.selected_display_ranges(cx),
5487 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5488 );
5489 });
5490 }
5491
5492 #[gpui::test]
5493 fn test_fold(cx: &mut gpui::MutableAppContext) {
5494 let buffer = MultiBuffer::build_simple(
5495 &"
5496 impl Foo {
5497 // Hello!
5498
5499 fn a() {
5500 1
5501 }
5502
5503 fn b() {
5504 2
5505 }
5506
5507 fn c() {
5508 3
5509 }
5510 }
5511 "
5512 .unindent(),
5513 cx,
5514 );
5515 let settings = EditorSettings::test(&cx);
5516 let (_, view) = cx.add_window(Default::default(), |cx| {
5517 build_editor(buffer.clone(), settings, cx)
5518 });
5519
5520 view.update(cx, |view, cx| {
5521 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5522 view.fold(&Fold, cx);
5523 assert_eq!(
5524 view.display_text(cx),
5525 "
5526 impl Foo {
5527 // Hello!
5528
5529 fn a() {
5530 1
5531 }
5532
5533 fn b() {…
5534 }
5535
5536 fn c() {…
5537 }
5538 }
5539 "
5540 .unindent(),
5541 );
5542
5543 view.fold(&Fold, cx);
5544 assert_eq!(
5545 view.display_text(cx),
5546 "
5547 impl Foo {…
5548 }
5549 "
5550 .unindent(),
5551 );
5552
5553 view.unfold(&Unfold, cx);
5554 assert_eq!(
5555 view.display_text(cx),
5556 "
5557 impl Foo {
5558 // Hello!
5559
5560 fn a() {
5561 1
5562 }
5563
5564 fn b() {…
5565 }
5566
5567 fn c() {…
5568 }
5569 }
5570 "
5571 .unindent(),
5572 );
5573
5574 view.unfold(&Unfold, cx);
5575 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5576 });
5577 }
5578
5579 #[gpui::test]
5580 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5581 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5582 let settings = EditorSettings::test(&cx);
5583 let (_, view) = cx.add_window(Default::default(), |cx| {
5584 build_editor(buffer.clone(), settings, cx)
5585 });
5586
5587 buffer.update(cx, |buffer, cx| {
5588 buffer.edit(
5589 vec![
5590 Point::new(1, 0)..Point::new(1, 0),
5591 Point::new(1, 1)..Point::new(1, 1),
5592 ],
5593 "\t",
5594 cx,
5595 );
5596 });
5597
5598 view.update(cx, |view, cx| {
5599 assert_eq!(
5600 view.selected_display_ranges(cx),
5601 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5602 );
5603
5604 view.move_down(&MoveDown, cx);
5605 assert_eq!(
5606 view.selected_display_ranges(cx),
5607 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5608 );
5609
5610 view.move_right(&MoveRight, cx);
5611 assert_eq!(
5612 view.selected_display_ranges(cx),
5613 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5614 );
5615
5616 view.move_left(&MoveLeft, cx);
5617 assert_eq!(
5618 view.selected_display_ranges(cx),
5619 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5620 );
5621
5622 view.move_up(&MoveUp, cx);
5623 assert_eq!(
5624 view.selected_display_ranges(cx),
5625 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5626 );
5627
5628 view.move_to_end(&MoveToEnd, cx);
5629 assert_eq!(
5630 view.selected_display_ranges(cx),
5631 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5632 );
5633
5634 view.move_to_beginning(&MoveToBeginning, cx);
5635 assert_eq!(
5636 view.selected_display_ranges(cx),
5637 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5638 );
5639
5640 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5641 view.select_to_beginning(&SelectToBeginning, cx);
5642 assert_eq!(
5643 view.selected_display_ranges(cx),
5644 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5645 );
5646
5647 view.select_to_end(&SelectToEnd, cx);
5648 assert_eq!(
5649 view.selected_display_ranges(cx),
5650 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5651 );
5652 });
5653 }
5654
5655 #[gpui::test]
5656 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5657 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5658 let settings = EditorSettings::test(&cx);
5659 let (_, view) = cx.add_window(Default::default(), |cx| {
5660 build_editor(buffer.clone(), settings, cx)
5661 });
5662
5663 assert_eq!('ⓐ'.len_utf8(), 3);
5664 assert_eq!('α'.len_utf8(), 2);
5665
5666 view.update(cx, |view, cx| {
5667 view.fold_ranges(
5668 vec![
5669 Point::new(0, 6)..Point::new(0, 12),
5670 Point::new(1, 2)..Point::new(1, 4),
5671 Point::new(2, 4)..Point::new(2, 8),
5672 ],
5673 cx,
5674 );
5675 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5676
5677 view.move_right(&MoveRight, cx);
5678 assert_eq!(
5679 view.selected_display_ranges(cx),
5680 &[empty_range(0, "ⓐ".len())]
5681 );
5682 view.move_right(&MoveRight, cx);
5683 assert_eq!(
5684 view.selected_display_ranges(cx),
5685 &[empty_range(0, "ⓐⓑ".len())]
5686 );
5687 view.move_right(&MoveRight, cx);
5688 assert_eq!(
5689 view.selected_display_ranges(cx),
5690 &[empty_range(0, "ⓐⓑ…".len())]
5691 );
5692
5693 view.move_down(&MoveDown, cx);
5694 assert_eq!(
5695 view.selected_display_ranges(cx),
5696 &[empty_range(1, "ab…".len())]
5697 );
5698 view.move_left(&MoveLeft, cx);
5699 assert_eq!(
5700 view.selected_display_ranges(cx),
5701 &[empty_range(1, "ab".len())]
5702 );
5703 view.move_left(&MoveLeft, cx);
5704 assert_eq!(
5705 view.selected_display_ranges(cx),
5706 &[empty_range(1, "a".len())]
5707 );
5708
5709 view.move_down(&MoveDown, cx);
5710 assert_eq!(
5711 view.selected_display_ranges(cx),
5712 &[empty_range(2, "α".len())]
5713 );
5714 view.move_right(&MoveRight, cx);
5715 assert_eq!(
5716 view.selected_display_ranges(cx),
5717 &[empty_range(2, "αβ".len())]
5718 );
5719 view.move_right(&MoveRight, cx);
5720 assert_eq!(
5721 view.selected_display_ranges(cx),
5722 &[empty_range(2, "αβ…".len())]
5723 );
5724 view.move_right(&MoveRight, cx);
5725 assert_eq!(
5726 view.selected_display_ranges(cx),
5727 &[empty_range(2, "αβ…ε".len())]
5728 );
5729
5730 view.move_up(&MoveUp, cx);
5731 assert_eq!(
5732 view.selected_display_ranges(cx),
5733 &[empty_range(1, "ab…e".len())]
5734 );
5735 view.move_up(&MoveUp, cx);
5736 assert_eq!(
5737 view.selected_display_ranges(cx),
5738 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5739 );
5740 view.move_left(&MoveLeft, cx);
5741 assert_eq!(
5742 view.selected_display_ranges(cx),
5743 &[empty_range(0, "ⓐⓑ…".len())]
5744 );
5745 view.move_left(&MoveLeft, cx);
5746 assert_eq!(
5747 view.selected_display_ranges(cx),
5748 &[empty_range(0, "ⓐⓑ".len())]
5749 );
5750 view.move_left(&MoveLeft, cx);
5751 assert_eq!(
5752 view.selected_display_ranges(cx),
5753 &[empty_range(0, "ⓐ".len())]
5754 );
5755 });
5756 }
5757
5758 #[gpui::test]
5759 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5760 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5761 let settings = EditorSettings::test(&cx);
5762 let (_, view) = cx.add_window(Default::default(), |cx| {
5763 build_editor(buffer.clone(), settings, cx)
5764 });
5765 view.update(cx, |view, cx| {
5766 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5767 view.move_down(&MoveDown, cx);
5768 assert_eq!(
5769 view.selected_display_ranges(cx),
5770 &[empty_range(1, "abcd".len())]
5771 );
5772
5773 view.move_down(&MoveDown, cx);
5774 assert_eq!(
5775 view.selected_display_ranges(cx),
5776 &[empty_range(2, "αβγ".len())]
5777 );
5778
5779 view.move_down(&MoveDown, cx);
5780 assert_eq!(
5781 view.selected_display_ranges(cx),
5782 &[empty_range(3, "abcd".len())]
5783 );
5784
5785 view.move_down(&MoveDown, cx);
5786 assert_eq!(
5787 view.selected_display_ranges(cx),
5788 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5789 );
5790
5791 view.move_up(&MoveUp, cx);
5792 assert_eq!(
5793 view.selected_display_ranges(cx),
5794 &[empty_range(3, "abcd".len())]
5795 );
5796
5797 view.move_up(&MoveUp, cx);
5798 assert_eq!(
5799 view.selected_display_ranges(cx),
5800 &[empty_range(2, "αβγ".len())]
5801 );
5802 });
5803 }
5804
5805 #[gpui::test]
5806 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5807 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5808 let settings = EditorSettings::test(&cx);
5809 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5810 view.update(cx, |view, cx| {
5811 view.select_display_ranges(
5812 &[
5813 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5814 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5815 ],
5816 cx,
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, 2)..DisplayPoint::new(1, 2),
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, 0)..DisplayPoint::new(1, 0),
5838 ]
5839 );
5840 });
5841
5842 view.update(cx, |view, cx| {
5843 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5844 assert_eq!(
5845 view.selected_display_ranges(cx),
5846 &[
5847 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5848 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5849 ]
5850 );
5851 });
5852
5853 view.update(cx, |view, cx| {
5854 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5855 assert_eq!(
5856 view.selected_display_ranges(cx),
5857 &[
5858 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5859 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5860 ]
5861 );
5862 });
5863
5864 // Moving to the end of line again is a no-op.
5865 view.update(cx, |view, cx| {
5866 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5867 assert_eq!(
5868 view.selected_display_ranges(cx),
5869 &[
5870 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5871 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5872 ]
5873 );
5874 });
5875
5876 view.update(cx, |view, cx| {
5877 view.move_left(&MoveLeft, 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, 2),
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, 0),
5895 ]
5896 );
5897 });
5898
5899 view.update(cx, |view, cx| {
5900 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5901 assert_eq!(
5902 view.selected_display_ranges(cx),
5903 &[
5904 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5905 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5906 ]
5907 );
5908 });
5909
5910 view.update(cx, |view, cx| {
5911 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5912 assert_eq!(
5913 view.selected_display_ranges(cx),
5914 &[
5915 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5916 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5917 ]
5918 );
5919 });
5920
5921 view.update(cx, |view, cx| {
5922 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5923 assert_eq!(view.display_text(cx), "ab\n de");
5924 assert_eq!(
5925 view.selected_display_ranges(cx),
5926 &[
5927 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5928 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5929 ]
5930 );
5931 });
5932
5933 view.update(cx, |view, cx| {
5934 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5935 assert_eq!(view.display_text(cx), "\n");
5936 assert_eq!(
5937 view.selected_display_ranges(cx),
5938 &[
5939 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5940 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5941 ]
5942 );
5943 });
5944 }
5945
5946 #[gpui::test]
5947 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
5948 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
5949 let settings = EditorSettings::test(&cx);
5950 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5951 view.update(cx, |view, cx| {
5952 view.select_display_ranges(
5953 &[
5954 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5955 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
5956 ],
5957 cx,
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, 9)..DisplayPoint::new(0, 9),
5967 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
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, 7)..DisplayPoint::new(0, 7),
5978 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
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, 4)..DisplayPoint::new(0, 4),
5989 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 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(1, 0)..DisplayPoint::new(1, 0),
6001 ]
6002 );
6003 });
6004
6005 view.update(cx, |view, cx| {
6006 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6007 assert_eq!(
6008 view.selected_display_ranges(cx),
6009 &[
6010 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6011 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
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, 3)..DisplayPoint::new(0, 3),
6022 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
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, 7)..DisplayPoint::new(0, 7),
6033 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6034 ]
6035 );
6036 });
6037
6038 view.update(cx, |view, cx| {
6039 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6040 assert_eq!(
6041 view.selected_display_ranges(cx),
6042 &[
6043 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6044 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6045 ]
6046 );
6047 });
6048
6049 view.update(cx, |view, cx| {
6050 view.move_right(&MoveRight, 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, 9),
6056 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6057 ]
6058 );
6059 });
6060
6061 view.update(cx, |view, cx| {
6062 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6063 assert_eq!(
6064 view.selected_display_ranges(cx),
6065 &[
6066 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6067 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6068 ]
6069 );
6070 });
6071
6072 view.update(cx, |view, cx| {
6073 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6074 assert_eq!(
6075 view.selected_display_ranges(cx),
6076 &[
6077 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6078 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6079 ]
6080 );
6081 });
6082 }
6083
6084 #[gpui::test]
6085 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6086 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6087 let settings = EditorSettings::test(&cx);
6088 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6089
6090 view.update(cx, |view, cx| {
6091 view.set_wrap_width(Some(140.), cx);
6092 assert_eq!(
6093 view.display_text(cx),
6094 "use one::{\n two::three::\n four::five\n};"
6095 );
6096
6097 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6098
6099 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6100 assert_eq!(
6101 view.selected_display_ranges(cx),
6102 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6103 );
6104
6105 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6106 assert_eq!(
6107 view.selected_display_ranges(cx),
6108 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6109 );
6110
6111 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6112 assert_eq!(
6113 view.selected_display_ranges(cx),
6114 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6115 );
6116
6117 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6118 assert_eq!(
6119 view.selected_display_ranges(cx),
6120 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6121 );
6122
6123 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6124 assert_eq!(
6125 view.selected_display_ranges(cx),
6126 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6127 );
6128
6129 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6130 assert_eq!(
6131 view.selected_display_ranges(cx),
6132 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6133 );
6134 });
6135 }
6136
6137 #[gpui::test]
6138 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6139 let buffer = MultiBuffer::build_simple("one two three four", cx);
6140 let settings = EditorSettings::test(&cx);
6141 let (_, view) = cx.add_window(Default::default(), |cx| {
6142 build_editor(buffer.clone(), settings, cx)
6143 });
6144
6145 view.update(cx, |view, cx| {
6146 view.select_display_ranges(
6147 &[
6148 // an empty selection - the preceding word fragment is deleted
6149 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6150 // characters selected - they are deleted
6151 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6152 ],
6153 cx,
6154 );
6155 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6156 });
6157
6158 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6159
6160 view.update(cx, |view, cx| {
6161 view.select_display_ranges(
6162 &[
6163 // an empty selection - the following word fragment is deleted
6164 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6165 // characters selected - they are deleted
6166 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6167 ],
6168 cx,
6169 );
6170 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6171 });
6172
6173 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6174 }
6175
6176 #[gpui::test]
6177 fn test_newline(cx: &mut gpui::MutableAppContext) {
6178 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6179 let settings = EditorSettings::test(&cx);
6180 let (_, view) = cx.add_window(Default::default(), |cx| {
6181 build_editor(buffer.clone(), settings, cx)
6182 });
6183
6184 view.update(cx, |view, cx| {
6185 view.select_display_ranges(
6186 &[
6187 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6188 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6189 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6190 ],
6191 cx,
6192 );
6193
6194 view.newline(&Newline, cx);
6195 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6196 });
6197 }
6198
6199 #[gpui::test]
6200 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6201 let buffer = MultiBuffer::build_simple(
6202 "
6203 a
6204 b(
6205 X
6206 )
6207 c(
6208 X
6209 )
6210 "
6211 .unindent()
6212 .as_str(),
6213 cx,
6214 );
6215
6216 let settings = EditorSettings::test(&cx);
6217 let (_, editor) = cx.add_window(Default::default(), |cx| {
6218 let mut editor = build_editor(buffer.clone(), settings, cx);
6219 editor.select_ranges(
6220 [
6221 Point::new(2, 4)..Point::new(2, 5),
6222 Point::new(5, 4)..Point::new(5, 5),
6223 ],
6224 None,
6225 cx,
6226 );
6227 editor
6228 });
6229
6230 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6231 buffer.update(cx, |buffer, cx| {
6232 buffer.edit(
6233 [
6234 Point::new(1, 2)..Point::new(3, 0),
6235 Point::new(4, 2)..Point::new(6, 0),
6236 ],
6237 "",
6238 cx,
6239 );
6240 assert_eq!(
6241 buffer.read(cx).text(),
6242 "
6243 a
6244 b()
6245 c()
6246 "
6247 .unindent()
6248 );
6249 });
6250
6251 editor.update(cx, |editor, cx| {
6252 assert_eq!(
6253 editor.selected_ranges(cx),
6254 &[
6255 Point::new(1, 2)..Point::new(1, 2),
6256 Point::new(2, 2)..Point::new(2, 2),
6257 ],
6258 );
6259
6260 editor.newline(&Newline, cx);
6261 assert_eq!(
6262 editor.text(cx),
6263 "
6264 a
6265 b(
6266 )
6267 c(
6268 )
6269 "
6270 .unindent()
6271 );
6272
6273 // The selections are moved after the inserted newlines
6274 assert_eq!(
6275 editor.selected_ranges(cx),
6276 &[
6277 Point::new(2, 0)..Point::new(2, 0),
6278 Point::new(4, 0)..Point::new(4, 0),
6279 ],
6280 );
6281 });
6282 }
6283
6284 #[gpui::test]
6285 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6286 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6287
6288 let settings = EditorSettings::test(&cx);
6289 let (_, editor) = cx.add_window(Default::default(), |cx| {
6290 let mut editor = build_editor(buffer.clone(), settings, cx);
6291 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6292 editor
6293 });
6294
6295 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6296 buffer.update(cx, |buffer, cx| {
6297 buffer.edit([2..5, 10..13, 18..21], "", cx);
6298 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6299 });
6300
6301 editor.update(cx, |editor, cx| {
6302 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6303
6304 editor.insert("Z", cx);
6305 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6306
6307 // The selections are moved after the inserted characters
6308 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6309 });
6310 }
6311
6312 #[gpui::test]
6313 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6314 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6315 let settings = EditorSettings::test(&cx);
6316 let (_, view) = cx.add_window(Default::default(), |cx| {
6317 build_editor(buffer.clone(), settings, cx)
6318 });
6319
6320 view.update(cx, |view, cx| {
6321 // two selections on the same line
6322 view.select_display_ranges(
6323 &[
6324 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6325 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6326 ],
6327 cx,
6328 );
6329
6330 // indent from mid-tabstop to full tabstop
6331 view.tab(&Tab, 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, 4)..DisplayPoint::new(0, 7),
6337 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6338 ]
6339 );
6340
6341 // outdent from 1 tabstop to 0 tabstops
6342 view.outdent(&Outdent, cx);
6343 assert_eq!(view.text(cx), "one two\nthree\n four");
6344 assert_eq!(
6345 view.selected_display_ranges(cx),
6346 &[
6347 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6348 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6349 ]
6350 );
6351
6352 // select across line ending
6353 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6354
6355 // indent and outdent affect only the preceding line
6356 view.tab(&Tab, cx);
6357 assert_eq!(view.text(cx), "one two\n three\n four");
6358 assert_eq!(
6359 view.selected_display_ranges(cx),
6360 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6361 );
6362 view.outdent(&Outdent, cx);
6363 assert_eq!(view.text(cx), "one two\nthree\n four");
6364 assert_eq!(
6365 view.selected_display_ranges(cx),
6366 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6367 );
6368
6369 // Ensure that indenting/outdenting works when the cursor is at column 0.
6370 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6371 view.tab(&Tab, cx);
6372 assert_eq!(view.text(cx), "one two\n three\n four");
6373 assert_eq!(
6374 view.selected_display_ranges(cx),
6375 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6376 );
6377
6378 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6379 view.outdent(&Outdent, cx);
6380 assert_eq!(view.text(cx), "one two\nthree\n four");
6381 assert_eq!(
6382 view.selected_display_ranges(cx),
6383 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6384 );
6385 });
6386 }
6387
6388 #[gpui::test]
6389 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6390 let buffer =
6391 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6392 let settings = EditorSettings::test(&cx);
6393 let (_, view) = cx.add_window(Default::default(), |cx| {
6394 build_editor(buffer.clone(), settings, cx)
6395 });
6396
6397 view.update(cx, |view, cx| {
6398 view.select_display_ranges(
6399 &[
6400 // an empty selection - the preceding character is deleted
6401 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6402 // one character selected - it is deleted
6403 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6404 // a line suffix selected - it is deleted
6405 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6406 ],
6407 cx,
6408 );
6409 view.backspace(&Backspace, cx);
6410 });
6411
6412 assert_eq!(
6413 buffer.read(cx).read(cx).text(),
6414 "oe two three\nfou five six\nseven ten\n"
6415 );
6416 }
6417
6418 #[gpui::test]
6419 fn test_delete(cx: &mut gpui::MutableAppContext) {
6420 let buffer =
6421 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6422 let settings = EditorSettings::test(&cx);
6423 let (_, view) = cx.add_window(Default::default(), |cx| {
6424 build_editor(buffer.clone(), settings, cx)
6425 });
6426
6427 view.update(cx, |view, cx| {
6428 view.select_display_ranges(
6429 &[
6430 // an empty selection - the following character is deleted
6431 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6432 // one character selected - it is deleted
6433 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6434 // a line suffix selected - it is deleted
6435 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6436 ],
6437 cx,
6438 );
6439 view.delete(&Delete, cx);
6440 });
6441
6442 assert_eq!(
6443 buffer.read(cx).read(cx).text(),
6444 "on two three\nfou five six\nseven ten\n"
6445 );
6446 }
6447
6448 #[gpui::test]
6449 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6450 let settings = EditorSettings::test(&cx);
6451 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6452 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6453 view.update(cx, |view, cx| {
6454 view.select_display_ranges(
6455 &[
6456 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6457 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6458 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6459 ],
6460 cx,
6461 );
6462 view.delete_line(&DeleteLine, cx);
6463 assert_eq!(view.display_text(cx), "ghi");
6464 assert_eq!(
6465 view.selected_display_ranges(cx),
6466 vec![
6467 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6468 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6469 ]
6470 );
6471 });
6472
6473 let settings = EditorSettings::test(&cx);
6474 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6475 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6476 view.update(cx, |view, cx| {
6477 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6478 view.delete_line(&DeleteLine, cx);
6479 assert_eq!(view.display_text(cx), "ghi\n");
6480 assert_eq!(
6481 view.selected_display_ranges(cx),
6482 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6483 );
6484 });
6485 }
6486
6487 #[gpui::test]
6488 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6489 let settings = EditorSettings::test(&cx);
6490 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6491 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6492 view.update(cx, |view, cx| {
6493 view.select_display_ranges(
6494 &[
6495 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6496 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6497 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6498 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6499 ],
6500 cx,
6501 );
6502 view.duplicate_line(&DuplicateLine, cx);
6503 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6504 assert_eq!(
6505 view.selected_display_ranges(cx),
6506 vec![
6507 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6508 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6509 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6510 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6511 ]
6512 );
6513 });
6514
6515 let settings = EditorSettings::test(&cx);
6516 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6517 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6518 view.update(cx, |view, cx| {
6519 view.select_display_ranges(
6520 &[
6521 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6522 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6523 ],
6524 cx,
6525 );
6526 view.duplicate_line(&DuplicateLine, cx);
6527 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6528 assert_eq!(
6529 view.selected_display_ranges(cx),
6530 vec![
6531 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6532 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6533 ]
6534 );
6535 });
6536 }
6537
6538 #[gpui::test]
6539 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6540 let settings = EditorSettings::test(&cx);
6541 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6542 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6543 view.update(cx, |view, cx| {
6544 view.fold_ranges(
6545 vec![
6546 Point::new(0, 2)..Point::new(1, 2),
6547 Point::new(2, 3)..Point::new(4, 1),
6548 Point::new(7, 0)..Point::new(8, 4),
6549 ],
6550 cx,
6551 );
6552 view.select_display_ranges(
6553 &[
6554 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6555 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6556 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6557 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6558 ],
6559 cx,
6560 );
6561 assert_eq!(
6562 view.display_text(cx),
6563 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6564 );
6565
6566 view.move_line_up(&MoveLineUp, cx);
6567 assert_eq!(
6568 view.display_text(cx),
6569 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6570 );
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 vec![
6574 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6575 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6576 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6577 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6578 ]
6579 );
6580 });
6581
6582 view.update(cx, |view, cx| {
6583 view.move_line_down(&MoveLineDown, cx);
6584 assert_eq!(
6585 view.display_text(cx),
6586 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6587 );
6588 assert_eq!(
6589 view.selected_display_ranges(cx),
6590 vec![
6591 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6592 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6593 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6594 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6595 ]
6596 );
6597 });
6598
6599 view.update(cx, |view, cx| {
6600 view.move_line_down(&MoveLineDown, cx);
6601 assert_eq!(
6602 view.display_text(cx),
6603 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6604 );
6605 assert_eq!(
6606 view.selected_display_ranges(cx),
6607 vec![
6608 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6609 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6610 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6611 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6612 ]
6613 );
6614 });
6615
6616 view.update(cx, |view, cx| {
6617 view.move_line_up(&MoveLineUp, cx);
6618 assert_eq!(
6619 view.display_text(cx),
6620 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6621 );
6622 assert_eq!(
6623 view.selected_display_ranges(cx),
6624 vec![
6625 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6626 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6627 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6628 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6629 ]
6630 );
6631 });
6632 }
6633
6634 #[gpui::test]
6635 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6636 let settings = EditorSettings::test(&cx);
6637 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6638 let snapshot = buffer.read(cx).snapshot(cx);
6639 let (_, editor) =
6640 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6641 editor.update(cx, |editor, cx| {
6642 editor.insert_blocks(
6643 [BlockProperties {
6644 position: snapshot.anchor_after(Point::new(2, 0)),
6645 disposition: BlockDisposition::Below,
6646 height: 1,
6647 render: Arc::new(|_| Empty::new().boxed()),
6648 }],
6649 cx,
6650 );
6651 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6652 editor.move_line_down(&MoveLineDown, cx);
6653 });
6654 }
6655
6656 #[gpui::test]
6657 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6658 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6659 let settings = EditorSettings::test(&cx);
6660 let view = cx
6661 .add_window(Default::default(), |cx| {
6662 build_editor(buffer.clone(), settings, cx)
6663 })
6664 .1;
6665
6666 // Cut with three selections. Clipboard text is divided into three slices.
6667 view.update(cx, |view, cx| {
6668 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6669 view.cut(&Cut, cx);
6670 assert_eq!(view.display_text(cx), "two four six ");
6671 });
6672
6673 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6674 view.update(cx, |view, cx| {
6675 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6676 view.paste(&Paste, cx);
6677 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6678 assert_eq!(
6679 view.selected_display_ranges(cx),
6680 &[
6681 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6682 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6683 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6684 ]
6685 );
6686 });
6687
6688 // Paste again but with only two cursors. Since the number of cursors doesn't
6689 // match the number of slices in the clipboard, the entire clipboard text
6690 // is pasted at each cursor.
6691 view.update(cx, |view, cx| {
6692 view.select_ranges(vec![0..0, 31..31], None, cx);
6693 view.handle_input(&Input("( ".into()), cx);
6694 view.paste(&Paste, cx);
6695 view.handle_input(&Input(") ".into()), cx);
6696 assert_eq!(
6697 view.display_text(cx),
6698 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6699 );
6700 });
6701
6702 view.update(cx, |view, cx| {
6703 view.select_ranges(vec![0..0], None, cx);
6704 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6705 assert_eq!(
6706 view.display_text(cx),
6707 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6708 );
6709 });
6710
6711 // Cut with three selections, one of which is full-line.
6712 view.update(cx, |view, cx| {
6713 view.select_display_ranges(
6714 &[
6715 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6716 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6717 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6718 ],
6719 cx,
6720 );
6721 view.cut(&Cut, cx);
6722 assert_eq!(
6723 view.display_text(cx),
6724 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6725 );
6726 });
6727
6728 // Paste with three selections, noticing how the copied selection that was full-line
6729 // gets inserted before the second cursor.
6730 view.update(cx, |view, cx| {
6731 view.select_display_ranges(
6732 &[
6733 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6734 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6735 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6736 ],
6737 cx,
6738 );
6739 view.paste(&Paste, cx);
6740 assert_eq!(
6741 view.display_text(cx),
6742 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6743 );
6744 assert_eq!(
6745 view.selected_display_ranges(cx),
6746 &[
6747 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6748 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6749 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6750 ]
6751 );
6752 });
6753
6754 // Copy with a single cursor only, which writes the whole line into the clipboard.
6755 view.update(cx, |view, cx| {
6756 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6757 view.copy(&Copy, cx);
6758 });
6759
6760 // Paste with three selections, noticing how the copied full-line selection is inserted
6761 // before the empty selections but replaces the selection that is non-empty.
6762 view.update(cx, |view, cx| {
6763 view.select_display_ranges(
6764 &[
6765 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6766 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6767 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6768 ],
6769 cx,
6770 );
6771 view.paste(&Paste, cx);
6772 assert_eq!(
6773 view.display_text(cx),
6774 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6775 );
6776 assert_eq!(
6777 view.selected_display_ranges(cx),
6778 &[
6779 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6780 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6781 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6782 ]
6783 );
6784 });
6785 }
6786
6787 #[gpui::test]
6788 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6789 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6790 let settings = EditorSettings::test(&cx);
6791 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6792 view.update(cx, |view, cx| {
6793 view.select_all(&SelectAll, cx);
6794 assert_eq!(
6795 view.selected_display_ranges(cx),
6796 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6797 );
6798 });
6799 }
6800
6801 #[gpui::test]
6802 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6803 let settings = EditorSettings::test(&cx);
6804 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6805 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6806 view.update(cx, |view, cx| {
6807 view.select_display_ranges(
6808 &[
6809 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6810 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6811 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6812 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6813 ],
6814 cx,
6815 );
6816 view.select_line(&SelectLine, cx);
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 vec![
6820 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6821 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
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![
6831 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6832 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6833 ]
6834 );
6835 });
6836
6837 view.update(cx, |view, cx| {
6838 view.select_line(&SelectLine, cx);
6839 assert_eq!(
6840 view.selected_display_ranges(cx),
6841 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6842 );
6843 });
6844 }
6845
6846 #[gpui::test]
6847 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6848 let settings = EditorSettings::test(&cx);
6849 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6850 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6851 view.update(cx, |view, cx| {
6852 view.fold_ranges(
6853 vec![
6854 Point::new(0, 2)..Point::new(1, 2),
6855 Point::new(2, 3)..Point::new(4, 1),
6856 Point::new(7, 0)..Point::new(8, 4),
6857 ],
6858 cx,
6859 );
6860 view.select_display_ranges(
6861 &[
6862 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6863 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6864 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6865 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6866 ],
6867 cx,
6868 );
6869 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6870 });
6871
6872 view.update(cx, |view, cx| {
6873 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6874 assert_eq!(
6875 view.display_text(cx),
6876 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6877 );
6878 assert_eq!(
6879 view.selected_display_ranges(cx),
6880 [
6881 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6882 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6883 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6884 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6885 ]
6886 );
6887 });
6888
6889 view.update(cx, |view, cx| {
6890 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6891 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6892 assert_eq!(
6893 view.display_text(cx),
6894 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6895 );
6896 assert_eq!(
6897 view.selected_display_ranges(cx),
6898 [
6899 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6900 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6901 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6902 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6903 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6904 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6905 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6906 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6907 ]
6908 );
6909 });
6910 }
6911
6912 #[gpui::test]
6913 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6914 let settings = EditorSettings::test(&cx);
6915 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6916 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6917
6918 view.update(cx, |view, cx| {
6919 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
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_above(&AddSelectionAbove, cx);
6934 assert_eq!(
6935 view.selected_display_ranges(cx),
6936 vec![
6937 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6938 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6939 ]
6940 );
6941 });
6942
6943 view.update(cx, |view, cx| {
6944 view.add_selection_below(&AddSelectionBelow, cx);
6945 assert_eq!(
6946 view.selected_display_ranges(cx),
6947 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
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.add_selection_below(&AddSelectionBelow, cx);
6964 assert_eq!(
6965 view.selected_display_ranges(cx),
6966 vec![
6967 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
6968 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
6969 ]
6970 );
6971 });
6972
6973 view.update(cx, |view, cx| {
6974 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
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_below(&AddSelectionBelow, cx);
6989 assert_eq!(
6990 view.selected_display_ranges(cx),
6991 vec![
6992 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6993 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
6994 ]
6995 );
6996 });
6997
6998 view.update(cx, |view, cx| {
6999 view.add_selection_above(&AddSelectionAbove, cx);
7000 assert_eq!(
7001 view.selected_display_ranges(cx),
7002 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7003 );
7004 });
7005
7006 view.update(cx, |view, cx| {
7007 view.add_selection_above(&AddSelectionAbove, cx);
7008 assert_eq!(
7009 view.selected_display_ranges(cx),
7010 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7011 );
7012 });
7013
7014 view.update(cx, |view, cx| {
7015 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7016 view.add_selection_below(&AddSelectionBelow, cx);
7017 assert_eq!(
7018 view.selected_display_ranges(cx),
7019 vec![
7020 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7021 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7022 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7023 ]
7024 );
7025 });
7026
7027 view.update(cx, |view, cx| {
7028 view.add_selection_below(&AddSelectionBelow, cx);
7029 assert_eq!(
7030 view.selected_display_ranges(cx),
7031 vec![
7032 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7033 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7034 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7035 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7036 ]
7037 );
7038 });
7039
7040 view.update(cx, |view, cx| {
7041 view.add_selection_above(&AddSelectionAbove, cx);
7042 assert_eq!(
7043 view.selected_display_ranges(cx),
7044 vec![
7045 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7046 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7047 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7048 ]
7049 );
7050 });
7051
7052 view.update(cx, |view, cx| {
7053 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7054 });
7055 view.update(cx, |view, cx| {
7056 view.add_selection_above(&AddSelectionAbove, cx);
7057 assert_eq!(
7058 view.selected_display_ranges(cx),
7059 vec![
7060 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7061 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7062 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7063 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7064 ]
7065 );
7066 });
7067
7068 view.update(cx, |view, cx| {
7069 view.add_selection_below(&AddSelectionBelow, cx);
7070 assert_eq!(
7071 view.selected_display_ranges(cx),
7072 vec![
7073 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7074 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7075 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7076 ]
7077 );
7078 });
7079 }
7080
7081 #[gpui::test]
7082 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7083 let settings = cx.read(EditorSettings::test);
7084 let language = Arc::new(Language::new(
7085 LanguageConfig::default(),
7086 Some(tree_sitter_rust::language()),
7087 ));
7088
7089 let text = r#"
7090 use mod1::mod2::{mod3, mod4};
7091
7092 fn fn_1(param1: bool, param2: &str) {
7093 let var1 = "text";
7094 }
7095 "#
7096 .unindent();
7097
7098 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7099 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7100 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7101 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7102 .await;
7103
7104 view.update(&mut cx, |view, cx| {
7105 view.select_display_ranges(
7106 &[
7107 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7108 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7109 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7110 ],
7111 cx,
7112 );
7113 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7114 });
7115 assert_eq!(
7116 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7117 &[
7118 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7119 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7120 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
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 &[
7130 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7131 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7132 ]
7133 );
7134
7135 view.update(&mut cx, |view, cx| {
7136 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7137 });
7138 assert_eq!(
7139 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7140 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7141 );
7142
7143 // Trying to expand the selected syntax node one more time has no effect.
7144 view.update(&mut cx, |view, cx| {
7145 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7146 });
7147 assert_eq!(
7148 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7149 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
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, 16)..DisplayPoint::new(0, 28),
7159 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7160 ]
7161 );
7162
7163 view.update(&mut cx, |view, cx| {
7164 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7165 });
7166 assert_eq!(
7167 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7168 &[
7169 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7170 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7171 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7172 ]
7173 );
7174
7175 view.update(&mut cx, |view, cx| {
7176 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7177 });
7178 assert_eq!(
7179 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7180 &[
7181 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7182 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7183 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7184 ]
7185 );
7186
7187 // Trying to shrink the selected syntax node one more time has no effect.
7188 view.update(&mut cx, |view, cx| {
7189 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7190 });
7191 assert_eq!(
7192 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7193 &[
7194 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7195 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7196 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7197 ]
7198 );
7199
7200 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7201 // a fold.
7202 view.update(&mut cx, |view, cx| {
7203 view.fold_ranges(
7204 vec![
7205 Point::new(0, 21)..Point::new(0, 24),
7206 Point::new(3, 20)..Point::new(3, 22),
7207 ],
7208 cx,
7209 );
7210 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7211 });
7212 assert_eq!(
7213 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7214 &[
7215 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7216 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7217 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7218 ]
7219 );
7220 }
7221
7222 #[gpui::test]
7223 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7224 let settings = cx.read(EditorSettings::test);
7225 let language = Arc::new(
7226 Language::new(
7227 LanguageConfig {
7228 brackets: vec![
7229 BracketPair {
7230 start: "{".to_string(),
7231 end: "}".to_string(),
7232 close: false,
7233 newline: true,
7234 },
7235 BracketPair {
7236 start: "(".to_string(),
7237 end: ")".to_string(),
7238 close: false,
7239 newline: true,
7240 },
7241 ],
7242 ..Default::default()
7243 },
7244 Some(tree_sitter_rust::language()),
7245 )
7246 .with_indents_query(
7247 r#"
7248 (_ "(" ")" @end) @indent
7249 (_ "{" "}" @end) @indent
7250 "#,
7251 )
7252 .unwrap(),
7253 );
7254
7255 let text = "fn a() {}";
7256
7257 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7258 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7259 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7260 editor
7261 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7262 .await;
7263
7264 editor.update(&mut cx, |editor, cx| {
7265 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7266 editor.newline(&Newline, cx);
7267 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7268 assert_eq!(
7269 editor.selected_ranges(cx),
7270 &[
7271 Point::new(1, 4)..Point::new(1, 4),
7272 Point::new(3, 4)..Point::new(3, 4),
7273 Point::new(5, 0)..Point::new(5, 0)
7274 ]
7275 );
7276 });
7277 }
7278
7279 #[gpui::test]
7280 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7281 let settings = cx.read(EditorSettings::test);
7282 let language = Arc::new(Language::new(
7283 LanguageConfig {
7284 brackets: vec![
7285 BracketPair {
7286 start: "{".to_string(),
7287 end: "}".to_string(),
7288 close: true,
7289 newline: true,
7290 },
7291 BracketPair {
7292 start: "/*".to_string(),
7293 end: " */".to_string(),
7294 close: true,
7295 newline: true,
7296 },
7297 ],
7298 ..Default::default()
7299 },
7300 Some(tree_sitter_rust::language()),
7301 ));
7302
7303 let text = r#"
7304 a
7305
7306 /
7307
7308 "#
7309 .unindent();
7310
7311 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7312 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7313 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7314 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7315 .await;
7316
7317 view.update(&mut cx, |view, cx| {
7318 view.select_display_ranges(
7319 &[
7320 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7321 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7322 ],
7323 cx,
7324 );
7325 view.handle_input(&Input("{".to_string()), cx);
7326 view.handle_input(&Input("{".to_string()), cx);
7327 view.handle_input(&Input("{".to_string()), cx);
7328 assert_eq!(
7329 view.text(cx),
7330 "
7331 {{{}}}
7332 {{{}}}
7333 /
7334
7335 "
7336 .unindent()
7337 );
7338
7339 view.move_right(&MoveRight, cx);
7340 view.handle_input(&Input("}".to_string()), cx);
7341 view.handle_input(&Input("}".to_string()), cx);
7342 view.handle_input(&Input("}".to_string()), cx);
7343 assert_eq!(
7344 view.text(cx),
7345 "
7346 {{{}}}}
7347 {{{}}}}
7348 /
7349
7350 "
7351 .unindent()
7352 );
7353
7354 view.undo(&Undo, cx);
7355 view.handle_input(&Input("/".to_string()), cx);
7356 view.handle_input(&Input("*".to_string()), cx);
7357 assert_eq!(
7358 view.text(cx),
7359 "
7360 /* */
7361 /* */
7362 /
7363
7364 "
7365 .unindent()
7366 );
7367
7368 view.undo(&Undo, cx);
7369 view.select_display_ranges(
7370 &[
7371 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7372 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7373 ],
7374 cx,
7375 );
7376 view.handle_input(&Input("*".to_string()), cx);
7377 assert_eq!(
7378 view.text(cx),
7379 "
7380 a
7381
7382 /*
7383 *
7384 "
7385 .unindent()
7386 );
7387 });
7388 }
7389
7390 #[gpui::test]
7391 async fn test_snippets(mut cx: gpui::TestAppContext) {
7392 let settings = cx.read(EditorSettings::test);
7393
7394 let text = "
7395 a. b
7396 a. b
7397 a. b
7398 "
7399 .unindent();
7400 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7401 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7402
7403 editor.update(&mut cx, |editor, cx| {
7404 let buffer = &editor.snapshot(cx).buffer_snapshot;
7405 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7406 let insertion_ranges = [
7407 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7408 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7409 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7410 ];
7411
7412 editor
7413 .insert_snippet(&insertion_ranges, snippet, cx)
7414 .unwrap();
7415 assert_eq!(
7416 editor.text(cx),
7417 "
7418 a.f(one, two, three) b
7419 a.f(one, two, three) b
7420 a.f(one, two, three) b
7421 "
7422 .unindent()
7423 );
7424 assert_eq!(
7425 editor.selected_ranges::<Point>(cx),
7426 &[
7427 Point::new(0, 4)..Point::new(0, 7),
7428 Point::new(0, 14)..Point::new(0, 19),
7429 Point::new(1, 4)..Point::new(1, 7),
7430 Point::new(1, 14)..Point::new(1, 19),
7431 Point::new(2, 4)..Point::new(2, 7),
7432 Point::new(2, 14)..Point::new(2, 19),
7433 ]
7434 );
7435
7436 // Can't move earlier than the first tab stop
7437 editor.move_to_prev_snippet_tabstop(cx);
7438 assert_eq!(
7439 editor.selected_ranges::<Point>(cx),
7440 &[
7441 Point::new(0, 4)..Point::new(0, 7),
7442 Point::new(0, 14)..Point::new(0, 19),
7443 Point::new(1, 4)..Point::new(1, 7),
7444 Point::new(1, 14)..Point::new(1, 19),
7445 Point::new(2, 4)..Point::new(2, 7),
7446 Point::new(2, 14)..Point::new(2, 19),
7447 ]
7448 );
7449
7450 assert!(editor.move_to_next_snippet_tabstop(cx));
7451 assert_eq!(
7452 editor.selected_ranges::<Point>(cx),
7453 &[
7454 Point::new(0, 9)..Point::new(0, 12),
7455 Point::new(1, 9)..Point::new(1, 12),
7456 Point::new(2, 9)..Point::new(2, 12)
7457 ]
7458 );
7459
7460 editor.move_to_prev_snippet_tabstop(cx);
7461 assert_eq!(
7462 editor.selected_ranges::<Point>(cx),
7463 &[
7464 Point::new(0, 4)..Point::new(0, 7),
7465 Point::new(0, 14)..Point::new(0, 19),
7466 Point::new(1, 4)..Point::new(1, 7),
7467 Point::new(1, 14)..Point::new(1, 19),
7468 Point::new(2, 4)..Point::new(2, 7),
7469 Point::new(2, 14)..Point::new(2, 19),
7470 ]
7471 );
7472
7473 assert!(editor.move_to_next_snippet_tabstop(cx));
7474 assert!(editor.move_to_next_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 // As soon as the last tab stop is reached, snippet state is gone
7485 editor.move_to_prev_snippet_tabstop(cx);
7486 assert_eq!(
7487 editor.selected_ranges::<Point>(cx),
7488 &[
7489 Point::new(0, 20)..Point::new(0, 20),
7490 Point::new(1, 20)..Point::new(1, 20),
7491 Point::new(2, 20)..Point::new(2, 20)
7492 ]
7493 );
7494 });
7495 }
7496
7497 #[gpui::test]
7498 async fn test_completion(mut cx: gpui::TestAppContext) {
7499 let settings = cx.read(EditorSettings::test);
7500 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7501 lsp::ServerCapabilities {
7502 completion_provider: Some(lsp::CompletionOptions {
7503 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7504 ..Default::default()
7505 }),
7506 ..Default::default()
7507 },
7508 cx.background(),
7509 )
7510 .await;
7511
7512 let text = "
7513 one
7514 two
7515 three
7516 "
7517 .unindent();
7518 let buffer = cx.add_model(|cx| {
7519 Buffer::from_file(
7520 0,
7521 text,
7522 Box::new(FakeFile {
7523 path: Arc::from(Path::new("/the/file")),
7524 }),
7525 cx,
7526 )
7527 .with_language_server(language_server, cx)
7528 });
7529 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7530 buffer.next_notification(&cx).await;
7531
7532 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7533
7534 editor.update(&mut cx, |editor, cx| {
7535 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7536 editor.handle_input(&Input(".".to_string()), cx);
7537 });
7538
7539 handle_completion_request(
7540 &mut fake,
7541 "/the/file",
7542 Point::new(0, 4),
7543 &[
7544 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7545 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7546 ],
7547 )
7548 .await;
7549 editor.next_notification(&cx).await;
7550
7551 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7552 editor.move_down(&MoveDown, cx);
7553 let apply_additional_edits = editor
7554 .confirm_completion(&ConfirmCompletion(None), cx)
7555 .unwrap();
7556 assert_eq!(
7557 editor.text(cx),
7558 "
7559 one.second_completion
7560 two
7561 three
7562 "
7563 .unindent()
7564 );
7565 apply_additional_edits
7566 });
7567
7568 handle_resolve_completion_request(
7569 &mut fake,
7570 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7571 )
7572 .await;
7573 apply_additional_edits.await.unwrap();
7574 assert_eq!(
7575 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7576 "
7577 one.second_completion
7578 two
7579 three
7580 additional edit
7581 "
7582 .unindent()
7583 );
7584
7585 editor.update(&mut cx, |editor, cx| {
7586 editor.select_ranges(
7587 [
7588 Point::new(1, 3)..Point::new(1, 3),
7589 Point::new(2, 5)..Point::new(2, 5),
7590 ],
7591 None,
7592 cx,
7593 );
7594
7595 editor.handle_input(&Input(" ".to_string()), cx);
7596 assert!(editor.context_menu.is_none());
7597 editor.handle_input(&Input("s".to_string()), cx);
7598 assert!(editor.context_menu.is_none());
7599 });
7600
7601 handle_completion_request(
7602 &mut fake,
7603 "/the/file",
7604 Point::new(2, 7),
7605 &[
7606 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7607 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7608 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7609 ],
7610 )
7611 .await;
7612 editor
7613 .condition(&cx, |editor, _| editor.context_menu.is_some())
7614 .await;
7615
7616 editor.update(&mut cx, |editor, cx| {
7617 editor.handle_input(&Input("i".to_string()), cx);
7618 });
7619
7620 handle_completion_request(
7621 &mut fake,
7622 "/the/file",
7623 Point::new(2, 8),
7624 &[
7625 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7626 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7627 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7628 ],
7629 )
7630 .await;
7631 editor.next_notification(&cx).await;
7632
7633 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7634 let apply_additional_edits = editor
7635 .confirm_completion(&ConfirmCompletion(None), cx)
7636 .unwrap();
7637 assert_eq!(
7638 editor.text(cx),
7639 "
7640 one.second_completion
7641 two sixth_completion
7642 three sixth_completion
7643 additional edit
7644 "
7645 .unindent()
7646 );
7647 apply_additional_edits
7648 });
7649 handle_resolve_completion_request(&mut fake, None).await;
7650 apply_additional_edits.await.unwrap();
7651
7652 async fn handle_completion_request(
7653 fake: &mut FakeLanguageServer,
7654 path: &str,
7655 position: Point,
7656 completions: &[(Range<Point>, &str)],
7657 ) {
7658 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7659 assert_eq!(
7660 params.text_document_position.text_document.uri,
7661 lsp::Url::from_file_path(path).unwrap()
7662 );
7663 assert_eq!(
7664 params.text_document_position.position,
7665 lsp::Position::new(position.row, position.column)
7666 );
7667
7668 let completions = completions
7669 .iter()
7670 .map(|(range, new_text)| lsp::CompletionItem {
7671 label: new_text.to_string(),
7672 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7673 range: lsp::Range::new(
7674 lsp::Position::new(range.start.row, range.start.column),
7675 lsp::Position::new(range.start.row, range.start.column),
7676 ),
7677 new_text: new_text.to_string(),
7678 })),
7679 ..Default::default()
7680 })
7681 .collect();
7682 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7683 .await;
7684 }
7685
7686 async fn handle_resolve_completion_request(
7687 fake: &mut FakeLanguageServer,
7688 edit: Option<(Range<Point>, &str)>,
7689 ) {
7690 let (id, _) = fake
7691 .receive_request::<lsp::request::ResolveCompletionItem>()
7692 .await;
7693 fake.respond(
7694 id,
7695 lsp::CompletionItem {
7696 additional_text_edits: edit.map(|(range, new_text)| {
7697 vec![lsp::TextEdit::new(
7698 lsp::Range::new(
7699 lsp::Position::new(range.start.row, range.start.column),
7700 lsp::Position::new(range.end.row, range.end.column),
7701 ),
7702 new_text.to_string(),
7703 )]
7704 }),
7705 ..Default::default()
7706 },
7707 )
7708 .await;
7709 }
7710 }
7711
7712 #[gpui::test]
7713 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7714 let settings = cx.read(EditorSettings::test);
7715 let language = Arc::new(Language::new(
7716 LanguageConfig {
7717 line_comment: Some("// ".to_string()),
7718 ..Default::default()
7719 },
7720 Some(tree_sitter_rust::language()),
7721 ));
7722
7723 let text = "
7724 fn a() {
7725 //b();
7726 // c();
7727 // d();
7728 }
7729 "
7730 .unindent();
7731
7732 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7733 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7734 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7735
7736 view.update(&mut cx, |editor, cx| {
7737 // If multiple selections intersect a line, the line is only
7738 // toggled once.
7739 editor.select_display_ranges(
7740 &[
7741 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7742 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7743 ],
7744 cx,
7745 );
7746 editor.toggle_comments(&ToggleComments, cx);
7747 assert_eq!(
7748 editor.text(cx),
7749 "
7750 fn a() {
7751 b();
7752 c();
7753 d();
7754 }
7755 "
7756 .unindent()
7757 );
7758
7759 // The comment prefix is inserted at the same column for every line
7760 // in a selection.
7761 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7762 editor.toggle_comments(&ToggleComments, cx);
7763 assert_eq!(
7764 editor.text(cx),
7765 "
7766 fn a() {
7767 // b();
7768 // c();
7769 // d();
7770 }
7771 "
7772 .unindent()
7773 );
7774
7775 // If a selection ends at the beginning of a line, that line is not toggled.
7776 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7777 editor.toggle_comments(&ToggleComments, cx);
7778 assert_eq!(
7779 editor.text(cx),
7780 "
7781 fn a() {
7782 // b();
7783 c();
7784 // d();
7785 }
7786 "
7787 .unindent()
7788 );
7789 });
7790 }
7791
7792 #[gpui::test]
7793 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7794 let settings = EditorSettings::test(cx);
7795 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7796 let multibuffer = cx.add_model(|cx| {
7797 let mut multibuffer = MultiBuffer::new(0);
7798 multibuffer.push_excerpt(
7799 ExcerptProperties {
7800 buffer: &buffer,
7801 range: Point::new(0, 0)..Point::new(0, 4),
7802 },
7803 cx,
7804 );
7805 multibuffer.push_excerpt(
7806 ExcerptProperties {
7807 buffer: &buffer,
7808 range: Point::new(1, 0)..Point::new(1, 4),
7809 },
7810 cx,
7811 );
7812 multibuffer
7813 });
7814
7815 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7816
7817 let (_, view) = cx.add_window(Default::default(), |cx| {
7818 build_editor(multibuffer, settings, cx)
7819 });
7820 view.update(cx, |view, cx| {
7821 view.select_display_ranges(
7822 &[
7823 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7824 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7825 ],
7826 cx,
7827 );
7828
7829 view.handle_input(&Input("X".to_string()), cx);
7830 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7831 assert_eq!(
7832 view.selected_display_ranges(cx),
7833 &[
7834 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7835 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7836 ]
7837 )
7838 });
7839 }
7840
7841 #[gpui::test]
7842 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7843 let settings = EditorSettings::test(cx);
7844 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7845 let multibuffer = cx.add_model(|cx| {
7846 let mut multibuffer = MultiBuffer::new(0);
7847 multibuffer.push_excerpt(
7848 ExcerptProperties {
7849 buffer: &buffer,
7850 range: Point::new(0, 0)..Point::new(1, 4),
7851 },
7852 cx,
7853 );
7854 multibuffer.push_excerpt(
7855 ExcerptProperties {
7856 buffer: &buffer,
7857 range: Point::new(1, 0)..Point::new(2, 4),
7858 },
7859 cx,
7860 );
7861 multibuffer
7862 });
7863
7864 assert_eq!(
7865 multibuffer.read(cx).read(cx).text(),
7866 "aaaa\nbbbb\nbbbb\ncccc"
7867 );
7868
7869 let (_, view) = cx.add_window(Default::default(), |cx| {
7870 build_editor(multibuffer, settings, cx)
7871 });
7872 view.update(cx, |view, cx| {
7873 view.select_display_ranges(
7874 &[
7875 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7876 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7877 ],
7878 cx,
7879 );
7880
7881 view.handle_input(&Input("X".to_string()), cx);
7882 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7883 assert_eq!(
7884 view.selected_display_ranges(cx),
7885 &[
7886 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7887 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7888 ]
7889 );
7890
7891 view.newline(&Newline, cx);
7892 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7893 assert_eq!(
7894 view.selected_display_ranges(cx),
7895 &[
7896 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7897 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7898 ]
7899 );
7900 });
7901 }
7902
7903 #[gpui::test]
7904 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7905 let settings = EditorSettings::test(cx);
7906 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7907 let mut excerpt1_id = None;
7908 let multibuffer = cx.add_model(|cx| {
7909 let mut multibuffer = MultiBuffer::new(0);
7910 excerpt1_id = Some(multibuffer.push_excerpt(
7911 ExcerptProperties {
7912 buffer: &buffer,
7913 range: Point::new(0, 0)..Point::new(1, 4),
7914 },
7915 cx,
7916 ));
7917 multibuffer.push_excerpt(
7918 ExcerptProperties {
7919 buffer: &buffer,
7920 range: Point::new(1, 0)..Point::new(2, 4),
7921 },
7922 cx,
7923 );
7924 multibuffer
7925 });
7926 assert_eq!(
7927 multibuffer.read(cx).read(cx).text(),
7928 "aaaa\nbbbb\nbbbb\ncccc"
7929 );
7930 let (_, editor) = cx.add_window(Default::default(), |cx| {
7931 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7932 editor.select_display_ranges(
7933 &[
7934 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7935 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7936 ],
7937 cx,
7938 );
7939 editor
7940 });
7941
7942 // Refreshing selections is a no-op when excerpts haven't changed.
7943 editor.update(cx, |editor, cx| {
7944 editor.refresh_selections(cx);
7945 assert_eq!(
7946 editor.selected_display_ranges(cx),
7947 [
7948 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7949 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7950 ]
7951 );
7952 });
7953
7954 multibuffer.update(cx, |multibuffer, cx| {
7955 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
7956 });
7957 editor.update(cx, |editor, cx| {
7958 // Removing an excerpt causes the first selection to become degenerate.
7959 assert_eq!(
7960 editor.selected_display_ranges(cx),
7961 [
7962 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7963 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7964 ]
7965 );
7966
7967 // Refreshing selections will relocate the first selection to the original buffer
7968 // location.
7969 editor.refresh_selections(cx);
7970 assert_eq!(
7971 editor.selected_display_ranges(cx),
7972 [
7973 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7974 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
7975 ]
7976 );
7977 });
7978 }
7979
7980 #[gpui::test]
7981 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
7982 let settings = cx.read(EditorSettings::test);
7983 let language = Arc::new(Language::new(
7984 LanguageConfig {
7985 brackets: vec![
7986 BracketPair {
7987 start: "{".to_string(),
7988 end: "}".to_string(),
7989 close: true,
7990 newline: true,
7991 },
7992 BracketPair {
7993 start: "/* ".to_string(),
7994 end: " */".to_string(),
7995 close: true,
7996 newline: true,
7997 },
7998 ],
7999 ..Default::default()
8000 },
8001 Some(tree_sitter_rust::language()),
8002 ));
8003
8004 let text = concat!(
8005 "{ }\n", // Suppress rustfmt
8006 " x\n", //
8007 " /* */\n", //
8008 "x\n", //
8009 "{{} }\n", //
8010 );
8011
8012 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8013 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8014 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8015 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8016 .await;
8017
8018 view.update(&mut cx, |view, cx| {
8019 view.select_display_ranges(
8020 &[
8021 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8022 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8023 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8024 ],
8025 cx,
8026 );
8027 view.newline(&Newline, cx);
8028
8029 assert_eq!(
8030 view.buffer().read(cx).read(cx).text(),
8031 concat!(
8032 "{ \n", // Suppress rustfmt
8033 "\n", //
8034 "}\n", //
8035 " x\n", //
8036 " /* \n", //
8037 " \n", //
8038 " */\n", //
8039 "x\n", //
8040 "{{} \n", //
8041 "}\n", //
8042 )
8043 );
8044 });
8045 }
8046
8047 #[gpui::test]
8048 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8049 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8050 let settings = EditorSettings::test(&cx);
8051 let (_, editor) = cx.add_window(Default::default(), |cx| {
8052 build_editor(buffer.clone(), settings, cx)
8053 });
8054
8055 editor.update(cx, |editor, cx| {
8056 struct Type1;
8057 struct Type2;
8058
8059 let buffer = buffer.read(cx).snapshot(cx);
8060
8061 let anchor_range = |range: Range<Point>| {
8062 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8063 };
8064
8065 editor.highlight_ranges::<Type1>(
8066 vec![
8067 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8068 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8069 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8070 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8071 ],
8072 Color::red(),
8073 cx,
8074 );
8075 editor.highlight_ranges::<Type2>(
8076 vec![
8077 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8078 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8079 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8080 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8081 ],
8082 Color::green(),
8083 cx,
8084 );
8085
8086 let snapshot = editor.snapshot(cx);
8087 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8088 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8089 &snapshot,
8090 );
8091 // Enforce a consistent ordering based on color without relying on the ordering of the
8092 // highlight's `TypeId` which is non-deterministic.
8093 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8094 assert_eq!(
8095 highlighted_ranges,
8096 &[
8097 (
8098 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8099 Color::green(),
8100 ),
8101 (
8102 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8103 Color::green(),
8104 ),
8105 (
8106 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8107 Color::red(),
8108 ),
8109 (
8110 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8111 Color::red(),
8112 ),
8113 ]
8114 );
8115 assert_eq!(
8116 editor.highlighted_ranges_in_range(
8117 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8118 &snapshot,
8119 ),
8120 &[(
8121 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8122 Color::red(),
8123 )]
8124 );
8125 });
8126 }
8127
8128 #[test]
8129 fn test_combine_syntax_and_fuzzy_match_highlights() {
8130 let string = "abcdefghijklmnop";
8131 let default = HighlightStyle::default();
8132 let syntax_ranges = [
8133 (
8134 0..3,
8135 HighlightStyle {
8136 color: Color::red(),
8137 ..default
8138 },
8139 ),
8140 (
8141 4..8,
8142 HighlightStyle {
8143 color: Color::green(),
8144 ..default
8145 },
8146 ),
8147 ];
8148 let match_indices = [4, 6, 7, 8];
8149 assert_eq!(
8150 combine_syntax_and_fuzzy_match_highlights(
8151 &string,
8152 default,
8153 syntax_ranges.into_iter(),
8154 &match_indices,
8155 ),
8156 &[
8157 (
8158 0..3,
8159 HighlightStyle {
8160 color: Color::red(),
8161 ..default
8162 },
8163 ),
8164 (
8165 4..5,
8166 HighlightStyle {
8167 color: Color::green(),
8168 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8169 ..default
8170 },
8171 ),
8172 (
8173 5..6,
8174 HighlightStyle {
8175 color: Color::green(),
8176 ..default
8177 },
8178 ),
8179 (
8180 6..8,
8181 HighlightStyle {
8182 color: Color::green(),
8183 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8184 ..default
8185 },
8186 ),
8187 (
8188 8..9,
8189 HighlightStyle {
8190 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8191 ..default
8192 },
8193 ),
8194 ]
8195 );
8196 }
8197
8198 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8199 let point = DisplayPoint::new(row as u32, column as u32);
8200 point..point
8201 }
8202
8203 fn build_editor(
8204 buffer: ModelHandle<MultiBuffer>,
8205 settings: EditorSettings,
8206 cx: &mut ViewContext<Editor>,
8207 ) -> Editor {
8208 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
8209 }
8210}
8211
8212trait RangeExt<T> {
8213 fn sorted(&self) -> Range<T>;
8214 fn to_inclusive(&self) -> RangeInclusive<T>;
8215}
8216
8217impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8218 fn sorted(&self) -> Self {
8219 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8220 }
8221
8222 fn to_inclusive(&self) -> RangeInclusive<T> {
8223 self.start.clone()..=self.end.clone()
8224 }
8225}