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 workspace: Option<WeakViewHandle<Workspace>>,
419 focused: bool,
420 show_local_cursors: bool,
421 blink_epoch: usize,
422 blinking_paused: bool,
423 mode: EditorMode,
424 vertical_scroll_margin: f32,
425 placeholder_text: Option<Arc<str>>,
426 highlighted_rows: Option<Range<u32>>,
427 highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
428 nav_history: Option<ItemNavHistory>,
429 context_menu: Option<ContextMenu>,
430 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
431 next_completion_id: CompletionId,
432}
433
434pub struct EditorSnapshot {
435 pub mode: EditorMode,
436 pub display_snapshot: DisplaySnapshot,
437 pub placeholder_text: Option<Arc<str>>,
438 is_focused: bool,
439 scroll_position: Vector2F,
440 scroll_top_anchor: Option<Anchor>,
441}
442
443struct PendingSelection {
444 selection: Selection<Anchor>,
445 mode: SelectMode,
446}
447
448struct AddSelectionsState {
449 above: bool,
450 stack: Vec<usize>,
451}
452
453struct SelectNextState {
454 query: AhoCorasick,
455 wordwise: bool,
456 done: bool,
457}
458
459struct BracketPairState {
460 ranges: Vec<Range<Anchor>>,
461 pair: BracketPair,
462}
463
464struct SnippetState {
465 ranges: Vec<Vec<Range<Anchor>>>,
466 active_index: usize,
467}
468
469struct InvalidationStack<T>(Vec<T>);
470
471enum ContextMenu {
472 Completions(CompletionsMenu),
473 CodeActions(CodeActionsMenu),
474}
475
476impl ContextMenu {
477 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
478 if self.visible() {
479 match self {
480 ContextMenu::Completions(menu) => menu.select_prev(cx),
481 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
482 }
483 true
484 } else {
485 false
486 }
487 }
488
489 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
490 if self.visible() {
491 match self {
492 ContextMenu::Completions(menu) => menu.select_next(cx),
493 ContextMenu::CodeActions(menu) => menu.select_next(cx),
494 }
495 true
496 } else {
497 false
498 }
499 }
500
501 fn visible(&self) -> bool {
502 match self {
503 ContextMenu::Completions(menu) => menu.visible(),
504 ContextMenu::CodeActions(menu) => menu.visible(),
505 }
506 }
507
508 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
509 match self {
510 ContextMenu::Completions(menu) => menu.render(build_settings, cx),
511 ContextMenu::CodeActions(menu) => menu.render(build_settings, cx),
512 }
513 }
514}
515
516struct CompletionsMenu {
517 id: CompletionId,
518 initial_position: Anchor,
519 buffer: ModelHandle<Buffer>,
520 completions: Arc<[Completion]>,
521 match_candidates: Vec<StringMatchCandidate>,
522 matches: Arc<[StringMatch]>,
523 selected_item: usize,
524 list: UniformListState,
525}
526
527impl CompletionsMenu {
528 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
529 if self.selected_item > 0 {
530 self.selected_item -= 1;
531 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
532 }
533 cx.notify();
534 }
535
536 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
537 if self.selected_item + 1 < self.matches.len() {
538 self.selected_item += 1;
539 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
540 }
541 cx.notify();
542 }
543
544 fn visible(&self) -> bool {
545 !self.matches.is_empty()
546 }
547
548 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
549 enum CompletionTag {}
550
551 let settings = build_settings(cx);
552 let completions = self.completions.clone();
553 let matches = self.matches.clone();
554 let selected_item = self.selected_item;
555 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
556 let settings = build_settings(cx);
557 let start_ix = range.start;
558 for (ix, mat) in matches[range].iter().enumerate() {
559 let completion = &completions[mat.candidate_id];
560 let item_ix = start_ix + ix;
561 items.push(
562 MouseEventHandler::new::<CompletionTag, _, _, _>(
563 mat.candidate_id,
564 cx,
565 |state, _| {
566 let item_style = if item_ix == selected_item {
567 settings.style.autocomplete.selected_item
568 } else if state.hovered {
569 settings.style.autocomplete.hovered_item
570 } else {
571 settings.style.autocomplete.item
572 };
573
574 Text::new(completion.label.text.clone(), settings.style.text.clone())
575 .with_soft_wrap(false)
576 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
577 &completion.label.text,
578 settings.style.text.color.into(),
579 styled_runs_for_completion_label(
580 &completion.label,
581 settings.style.text.color,
582 &settings.style.syntax,
583 ),
584 &mat.positions,
585 ))
586 .contained()
587 .with_style(item_style)
588 .boxed()
589 },
590 )
591 .with_cursor_style(CursorStyle::PointingHand)
592 .on_mouse_down(move |cx| {
593 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
594 })
595 .boxed(),
596 );
597 }
598 })
599 .with_width_from_item(
600 self.matches
601 .iter()
602 .enumerate()
603 .max_by_key(|(_, mat)| {
604 self.completions[mat.candidate_id]
605 .label
606 .text
607 .chars()
608 .count()
609 })
610 .map(|(ix, _)| ix),
611 )
612 .contained()
613 .with_style(settings.style.autocomplete.container)
614 .boxed()
615 }
616
617 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
618 let mut matches = if let Some(query) = query {
619 fuzzy::match_strings(
620 &self.match_candidates,
621 query,
622 false,
623 100,
624 &Default::default(),
625 executor,
626 )
627 .await
628 } else {
629 self.match_candidates
630 .iter()
631 .enumerate()
632 .map(|(candidate_id, candidate)| StringMatch {
633 candidate_id,
634 score: Default::default(),
635 positions: Default::default(),
636 string: candidate.string.clone(),
637 })
638 .collect()
639 };
640 matches.sort_unstable_by_key(|mat| {
641 (
642 Reverse(OrderedFloat(mat.score)),
643 self.completions[mat.candidate_id].sort_key(),
644 )
645 });
646
647 for mat in &mut matches {
648 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
649 for position in &mut mat.positions {
650 *position += filter_start;
651 }
652 }
653
654 self.matches = matches.into();
655 }
656}
657
658struct CodeActionsMenu {
659 actions: Arc<[CodeAction]>,
660 buffer: ModelHandle<Buffer>,
661 selected_item: usize,
662 list: UniformListState,
663}
664
665impl CodeActionsMenu {
666 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
667 if self.selected_item > 0 {
668 self.selected_item -= 1;
669 cx.notify()
670 }
671 }
672
673 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
674 if self.selected_item + 1 < self.actions.len() {
675 self.selected_item += 1;
676 cx.notify()
677 }
678 }
679
680 fn visible(&self) -> bool {
681 !self.actions.is_empty()
682 }
683
684 fn render(&self, build_settings: BuildSettings, cx: &AppContext) -> ElementBox {
685 enum ActionTag {}
686
687 let settings = build_settings(cx);
688 let actions = self.actions.clone();
689 let selected_item = self.selected_item;
690 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
691 let settings = build_settings(cx);
692 let start_ix = range.start;
693 for (ix, action) in actions[range].iter().enumerate() {
694 let item_ix = start_ix + ix;
695 items.push(
696 MouseEventHandler::new::<ActionTag, _, _, _>(item_ix, cx, |state, _| {
697 let item_style = if item_ix == selected_item {
698 settings.style.autocomplete.selected_item
699 } else if state.hovered {
700 settings.style.autocomplete.hovered_item
701 } else {
702 settings.style.autocomplete.item
703 };
704
705 Text::new(action.lsp_action.title.clone(), settings.style.text.clone())
706 .with_soft_wrap(false)
707 .contained()
708 .with_style(item_style)
709 .boxed()
710 })
711 .with_cursor_style(CursorStyle::PointingHand)
712 .on_mouse_down(move |cx| {
713 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
714 })
715 .boxed(),
716 );
717 }
718 })
719 .with_width_from_item(
720 self.actions
721 .iter()
722 .enumerate()
723 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
724 .map(|(ix, _)| ix),
725 )
726 .contained()
727 .with_style(settings.style.autocomplete.container)
728 .boxed()
729 }
730}
731
732#[derive(Debug)]
733struct ActiveDiagnosticGroup {
734 primary_range: Range<Anchor>,
735 primary_message: String,
736 blocks: HashMap<BlockId, Diagnostic>,
737 is_valid: bool,
738}
739
740#[derive(Serialize, Deserialize)]
741struct ClipboardSelection {
742 len: usize,
743 is_entire_line: bool,
744}
745
746pub struct NavigationData {
747 anchor: Anchor,
748 offset: usize,
749}
750
751impl Editor {
752 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
753 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
754 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
755 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
756 view.mode = EditorMode::SingleLine;
757 view
758 }
759
760 pub fn auto_height(
761 max_lines: usize,
762 build_settings: BuildSettings,
763 cx: &mut ViewContext<Self>,
764 ) -> Self {
765 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
766 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
767 let mut view = Self::for_buffer(buffer, build_settings, None, cx);
768 view.mode = EditorMode::AutoHeight { max_lines };
769 view
770 }
771
772 pub fn for_buffer(
773 buffer: ModelHandle<MultiBuffer>,
774 build_settings: BuildSettings,
775 workspace: Option<WeakViewHandle<Workspace>>,
776 cx: &mut ViewContext<Self>,
777 ) -> Self {
778 Self::new(buffer, build_settings, workspace, cx)
779 }
780
781 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
782 let mut clone = Self::new(
783 self.buffer.clone(),
784 self.build_settings.clone(),
785 self.workspace.clone(),
786 cx,
787 );
788 clone.scroll_position = self.scroll_position;
789 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
790 clone.nav_history = self
791 .nav_history
792 .as_ref()
793 .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle()));
794 clone
795 }
796
797 pub fn new(
798 buffer: ModelHandle<MultiBuffer>,
799 build_settings: BuildSettings,
800 workspace: Option<WeakViewHandle<Workspace>>,
801 cx: &mut ViewContext<Self>,
802 ) -> Self {
803 let settings = build_settings(cx);
804 let display_map = cx.add_model(|cx| {
805 DisplayMap::new(
806 buffer.clone(),
807 settings.tab_size,
808 settings.style.text.font_id,
809 settings.style.text.font_size,
810 None,
811 cx,
812 )
813 });
814 cx.observe(&buffer, Self::on_buffer_changed).detach();
815 cx.subscribe(&buffer, Self::on_buffer_event).detach();
816 cx.observe(&display_map, Self::on_display_map_changed)
817 .detach();
818
819 let mut this = Self {
820 handle: cx.weak_handle(),
821 buffer,
822 display_map,
823 selections: Arc::from([]),
824 pending_selection: None,
825 columnar_selection_tail: None,
826 next_selection_id: 0,
827 add_selections_state: None,
828 select_next_state: None,
829 selection_history: Default::default(),
830 autoclose_stack: Default::default(),
831 snippet_stack: Default::default(),
832 select_larger_syntax_node_stack: Vec::new(),
833 active_diagnostics: None,
834 build_settings,
835 workspace,
836 scroll_position: Vector2F::zero(),
837 scroll_top_anchor: None,
838 autoscroll_request: None,
839 focused: false,
840 show_local_cursors: false,
841 blink_epoch: 0,
842 blinking_paused: false,
843 mode: EditorMode::Full,
844 vertical_scroll_margin: 3.0,
845 placeholder_text: None,
846 highlighted_rows: None,
847 highlighted_ranges: Default::default(),
848 nav_history: None,
849 context_menu: None,
850 completion_tasks: Default::default(),
851 next_completion_id: 0,
852 };
853 let selection = Selection {
854 id: post_inc(&mut this.next_selection_id),
855 start: 0,
856 end: 0,
857 reversed: false,
858 goal: SelectionGoal::None,
859 };
860 this.update_selections(vec![selection], None, cx);
861 this
862 }
863
864 pub fn open_new(
865 workspace: &mut Workspace,
866 _: &workspace::OpenNew,
867 cx: &mut ViewContext<Workspace>,
868 ) {
869 let buffer = cx
870 .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx));
871 workspace.open_item(BufferItemHandle(buffer), cx);
872 }
873
874 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
875 self.buffer.read(cx).replica_id()
876 }
877
878 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
879 &self.buffer
880 }
881
882 pub fn title(&self, cx: &AppContext) -> String {
883 let filename = self
884 .buffer()
885 .read(cx)
886 .file(cx)
887 .map(|file| file.file_name(cx));
888 if let Some(name) = filename {
889 name.to_string_lossy().into()
890 } else {
891 "untitled".into()
892 }
893 }
894
895 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
896 EditorSnapshot {
897 mode: self.mode,
898 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
899 scroll_position: self.scroll_position,
900 scroll_top_anchor: self.scroll_top_anchor.clone(),
901 placeholder_text: self.placeholder_text.clone(),
902 is_focused: self
903 .handle
904 .upgrade(cx)
905 .map_or(false, |handle| handle.is_focused(cx)),
906 }
907 }
908
909 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
910 self.buffer.read(cx).language(cx)
911 }
912
913 pub fn set_placeholder_text(
914 &mut self,
915 placeholder_text: impl Into<Arc<str>>,
916 cx: &mut ViewContext<Self>,
917 ) {
918 self.placeholder_text = Some(placeholder_text.into());
919 cx.notify();
920 }
921
922 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
923 self.vertical_scroll_margin = margin_rows as f32;
924 cx.notify();
925 }
926
927 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
928 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
929
930 if scroll_position.y() == 0. {
931 self.scroll_top_anchor = None;
932 self.scroll_position = scroll_position;
933 } else {
934 let scroll_top_buffer_offset =
935 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
936 let anchor = map
937 .buffer_snapshot
938 .anchor_at(scroll_top_buffer_offset, Bias::Right);
939 self.scroll_position = vec2f(
940 scroll_position.x(),
941 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
942 );
943 self.scroll_top_anchor = Some(anchor);
944 }
945
946 cx.notify();
947 }
948
949 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
950 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
951 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
952 }
953
954 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
955 if max < self.scroll_position.x() {
956 self.scroll_position.set_x(max);
957 true
958 } else {
959 false
960 }
961 }
962
963 pub fn autoscroll_vertically(
964 &mut self,
965 viewport_height: f32,
966 line_height: f32,
967 cx: &mut ViewContext<Self>,
968 ) -> bool {
969 let visible_lines = viewport_height / line_height;
970 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
971 let mut scroll_position =
972 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
973 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
974 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
975 } else {
976 display_map.max_point().row().saturating_sub(1) as f32
977 };
978 if scroll_position.y() > max_scroll_top {
979 scroll_position.set_y(max_scroll_top);
980 self.set_scroll_position(scroll_position, cx);
981 }
982
983 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
984 autoscroll
985 } else {
986 return false;
987 };
988
989 let first_cursor_top;
990 let last_cursor_bottom;
991 if let Some(highlighted_rows) = &self.highlighted_rows {
992 first_cursor_top = highlighted_rows.start as f32;
993 last_cursor_bottom = first_cursor_top + 1.;
994 } else if autoscroll == Autoscroll::Newest {
995 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
996 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
997 last_cursor_bottom = first_cursor_top + 1.;
998 } else {
999 let selections = self.local_selections::<Point>(cx);
1000 first_cursor_top = selections
1001 .first()
1002 .unwrap()
1003 .head()
1004 .to_display_point(&display_map)
1005 .row() as f32;
1006 last_cursor_bottom = selections
1007 .last()
1008 .unwrap()
1009 .head()
1010 .to_display_point(&display_map)
1011 .row() as f32
1012 + 1.0;
1013 }
1014
1015 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1016 0.
1017 } else {
1018 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1019 };
1020 if margin < 0.0 {
1021 return false;
1022 }
1023
1024 match autoscroll {
1025 Autoscroll::Fit | Autoscroll::Newest => {
1026 let margin = margin.min(self.vertical_scroll_margin);
1027 let target_top = (first_cursor_top - margin).max(0.0);
1028 let target_bottom = last_cursor_bottom + margin;
1029 let start_row = scroll_position.y();
1030 let end_row = start_row + visible_lines;
1031
1032 if target_top < start_row {
1033 scroll_position.set_y(target_top);
1034 self.set_scroll_position(scroll_position, cx);
1035 } else if target_bottom >= end_row {
1036 scroll_position.set_y(target_bottom - visible_lines);
1037 self.set_scroll_position(scroll_position, cx);
1038 }
1039 }
1040 Autoscroll::Center => {
1041 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1042 self.set_scroll_position(scroll_position, cx);
1043 }
1044 }
1045
1046 true
1047 }
1048
1049 pub fn autoscroll_horizontally(
1050 &mut self,
1051 start_row: u32,
1052 viewport_width: f32,
1053 scroll_width: f32,
1054 max_glyph_width: f32,
1055 layouts: &[text_layout::Line],
1056 cx: &mut ViewContext<Self>,
1057 ) -> bool {
1058 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1059 let selections = self.local_selections::<Point>(cx);
1060
1061 let mut target_left;
1062 let mut target_right;
1063
1064 if self.highlighted_rows.is_some() {
1065 target_left = 0.0_f32;
1066 target_right = 0.0_f32;
1067 } else {
1068 target_left = std::f32::INFINITY;
1069 target_right = 0.0_f32;
1070 for selection in selections {
1071 let head = selection.head().to_display_point(&display_map);
1072 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1073 let start_column = head.column().saturating_sub(3);
1074 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1075 target_left = target_left.min(
1076 layouts[(head.row() - start_row) as usize]
1077 .x_for_index(start_column as usize),
1078 );
1079 target_right = target_right.max(
1080 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1081 + max_glyph_width,
1082 );
1083 }
1084 }
1085 }
1086
1087 target_right = target_right.min(scroll_width);
1088
1089 if target_right - target_left > viewport_width {
1090 return false;
1091 }
1092
1093 let scroll_left = self.scroll_position.x() * max_glyph_width;
1094 let scroll_right = scroll_left + viewport_width;
1095
1096 if target_left < scroll_left {
1097 self.scroll_position.set_x(target_left / max_glyph_width);
1098 true
1099 } else if target_right > scroll_right {
1100 self.scroll_position
1101 .set_x((target_right - viewport_width) / max_glyph_width);
1102 true
1103 } else {
1104 false
1105 }
1106 }
1107
1108 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1109 self.hide_context_menu(cx);
1110
1111 match phase {
1112 SelectPhase::Begin {
1113 position,
1114 add,
1115 click_count,
1116 } => self.begin_selection(*position, *add, *click_count, cx),
1117 SelectPhase::BeginColumnar {
1118 position,
1119 overshoot,
1120 } => self.begin_columnar_selection(*position, *overshoot, cx),
1121 SelectPhase::Extend {
1122 position,
1123 click_count,
1124 } => self.extend_selection(*position, *click_count, cx),
1125 SelectPhase::Update {
1126 position,
1127 overshoot,
1128 scroll_position,
1129 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1130 SelectPhase::End => self.end_selection(cx),
1131 }
1132 }
1133
1134 fn extend_selection(
1135 &mut self,
1136 position: DisplayPoint,
1137 click_count: usize,
1138 cx: &mut ViewContext<Self>,
1139 ) {
1140 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1141 let tail = self
1142 .newest_selection::<usize>(&display_map.buffer_snapshot)
1143 .tail();
1144 self.begin_selection(position, false, click_count, cx);
1145
1146 let position = position.to_offset(&display_map, Bias::Left);
1147 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1148 let pending = self.pending_selection.as_mut().unwrap();
1149
1150 if position >= tail {
1151 pending.selection.start = tail_anchor.clone();
1152 } else {
1153 pending.selection.end = tail_anchor.clone();
1154 pending.selection.reversed = true;
1155 }
1156
1157 match &mut pending.mode {
1158 SelectMode::Word(range) | SelectMode::Line(range) => {
1159 *range = tail_anchor.clone()..tail_anchor
1160 }
1161 _ => {}
1162 }
1163 }
1164
1165 fn begin_selection(
1166 &mut self,
1167 position: DisplayPoint,
1168 add: bool,
1169 click_count: usize,
1170 cx: &mut ViewContext<Self>,
1171 ) {
1172 if !self.focused {
1173 cx.focus_self();
1174 cx.emit(Event::Activate);
1175 }
1176
1177 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1178 let buffer = &display_map.buffer_snapshot;
1179 let newest_selection = self.newest_anchor_selection().unwrap().clone();
1180
1181 let start;
1182 let end;
1183 let mode;
1184 match click_count {
1185 1 => {
1186 start = buffer.anchor_before(position.to_point(&display_map));
1187 end = start.clone();
1188 mode = SelectMode::Character;
1189 }
1190 2 => {
1191 let range = movement::surrounding_word(&display_map, position);
1192 start = buffer.anchor_before(range.start.to_point(&display_map));
1193 end = buffer.anchor_before(range.end.to_point(&display_map));
1194 mode = SelectMode::Word(start.clone()..end.clone());
1195 }
1196 3 => {
1197 let position = display_map
1198 .clip_point(position, Bias::Left)
1199 .to_point(&display_map);
1200 let line_start = display_map.prev_line_boundary(position).0;
1201 let next_line_start = buffer.clip_point(
1202 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1203 Bias::Left,
1204 );
1205 start = buffer.anchor_before(line_start);
1206 end = buffer.anchor_before(next_line_start);
1207 mode = SelectMode::Line(start.clone()..end.clone());
1208 }
1209 _ => {
1210 start = buffer.anchor_before(0);
1211 end = buffer.anchor_before(buffer.len());
1212 mode = SelectMode::All;
1213 }
1214 }
1215
1216 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1217
1218 let selection = Selection {
1219 id: post_inc(&mut self.next_selection_id),
1220 start,
1221 end,
1222 reversed: false,
1223 goal: SelectionGoal::None,
1224 };
1225
1226 if !add {
1227 self.update_selections::<usize>(Vec::new(), None, cx);
1228 } else if click_count > 1 {
1229 // Remove the newest selection since it was only added as part of this multi-click.
1230 let mut selections = self.local_selections(cx);
1231 selections.retain(|selection| selection.id != newest_selection.id);
1232 self.update_selections::<usize>(selections, None, cx)
1233 }
1234
1235 self.pending_selection = Some(PendingSelection { selection, mode });
1236
1237 cx.notify();
1238 }
1239
1240 fn begin_columnar_selection(
1241 &mut self,
1242 position: DisplayPoint,
1243 overshoot: u32,
1244 cx: &mut ViewContext<Self>,
1245 ) {
1246 if !self.focused {
1247 cx.focus_self();
1248 cx.emit(Event::Activate);
1249 }
1250
1251 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1252 let tail = self
1253 .newest_selection::<Point>(&display_map.buffer_snapshot)
1254 .tail();
1255 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1256
1257 self.select_columns(
1258 tail.to_display_point(&display_map),
1259 position,
1260 overshoot,
1261 &display_map,
1262 cx,
1263 );
1264 }
1265
1266 fn update_selection(
1267 &mut self,
1268 position: DisplayPoint,
1269 overshoot: u32,
1270 scroll_position: Vector2F,
1271 cx: &mut ViewContext<Self>,
1272 ) {
1273 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1274
1275 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1276 let tail = tail.to_display_point(&display_map);
1277 self.select_columns(tail, position, overshoot, &display_map, cx);
1278 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
1279 let buffer = self.buffer.read(cx).snapshot(cx);
1280 let head;
1281 let tail;
1282 match mode {
1283 SelectMode::Character => {
1284 head = position.to_point(&display_map);
1285 tail = selection.tail().to_point(&buffer);
1286 }
1287 SelectMode::Word(original_range) => {
1288 let original_display_range = original_range.start.to_display_point(&display_map)
1289 ..original_range.end.to_display_point(&display_map);
1290 let original_buffer_range = original_display_range.start.to_point(&display_map)
1291 ..original_display_range.end.to_point(&display_map);
1292 if movement::is_inside_word(&display_map, position)
1293 || original_display_range.contains(&position)
1294 {
1295 let word_range = movement::surrounding_word(&display_map, position);
1296 if word_range.start < original_display_range.start {
1297 head = word_range.start.to_point(&display_map);
1298 } else {
1299 head = word_range.end.to_point(&display_map);
1300 }
1301 } else {
1302 head = position.to_point(&display_map);
1303 }
1304
1305 if head <= original_buffer_range.start {
1306 tail = original_buffer_range.end;
1307 } else {
1308 tail = original_buffer_range.start;
1309 }
1310 }
1311 SelectMode::Line(original_range) => {
1312 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1313
1314 let position = display_map
1315 .clip_point(position, Bias::Left)
1316 .to_point(&display_map);
1317 let line_start = display_map.prev_line_boundary(position).0;
1318 let next_line_start = buffer.clip_point(
1319 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1320 Bias::Left,
1321 );
1322
1323 if line_start < original_range.start {
1324 head = line_start
1325 } else {
1326 head = next_line_start
1327 }
1328
1329 if head <= original_range.start {
1330 tail = original_range.end;
1331 } else {
1332 tail = original_range.start;
1333 }
1334 }
1335 SelectMode::All => {
1336 return;
1337 }
1338 };
1339
1340 if head < tail {
1341 selection.start = buffer.anchor_before(head);
1342 selection.end = buffer.anchor_before(tail);
1343 selection.reversed = true;
1344 } else {
1345 selection.start = buffer.anchor_before(tail);
1346 selection.end = buffer.anchor_before(head);
1347 selection.reversed = false;
1348 }
1349 } else {
1350 log::error!("update_selection dispatched with no pending selection");
1351 return;
1352 }
1353
1354 self.set_scroll_position(scroll_position, cx);
1355 cx.notify();
1356 }
1357
1358 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1359 self.columnar_selection_tail.take();
1360 if self.pending_selection.is_some() {
1361 let selections = self.local_selections::<usize>(cx);
1362 self.update_selections(selections, None, cx);
1363 }
1364 }
1365
1366 fn select_columns(
1367 &mut self,
1368 tail: DisplayPoint,
1369 head: DisplayPoint,
1370 overshoot: u32,
1371 display_map: &DisplaySnapshot,
1372 cx: &mut ViewContext<Self>,
1373 ) {
1374 let start_row = cmp::min(tail.row(), head.row());
1375 let end_row = cmp::max(tail.row(), head.row());
1376 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1377 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1378 let reversed = start_column < tail.column();
1379
1380 let selections = (start_row..=end_row)
1381 .filter_map(|row| {
1382 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1383 let start = display_map
1384 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1385 .to_point(&display_map);
1386 let end = display_map
1387 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1388 .to_point(&display_map);
1389 Some(Selection {
1390 id: post_inc(&mut self.next_selection_id),
1391 start,
1392 end,
1393 reversed,
1394 goal: SelectionGoal::None,
1395 })
1396 } else {
1397 None
1398 }
1399 })
1400 .collect::<Vec<_>>();
1401
1402 self.update_selections(selections, None, cx);
1403 cx.notify();
1404 }
1405
1406 pub fn is_selecting(&self) -> bool {
1407 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1408 }
1409
1410 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1411 if self.hide_context_menu(cx).is_some() {
1412 return;
1413 }
1414
1415 if self.snippet_stack.pop().is_some() {
1416 return;
1417 }
1418
1419 if self.mode != EditorMode::Full {
1420 cx.propagate_action();
1421 return;
1422 }
1423
1424 if self.active_diagnostics.is_some() {
1425 self.dismiss_diagnostics(cx);
1426 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1427 let buffer = self.buffer.read(cx).snapshot(cx);
1428 let selection = Selection {
1429 id: selection.id,
1430 start: selection.start.to_point(&buffer),
1431 end: selection.end.to_point(&buffer),
1432 reversed: selection.reversed,
1433 goal: selection.goal,
1434 };
1435 if self.local_selections::<Point>(cx).is_empty() {
1436 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1437 }
1438 } else {
1439 let buffer = self.buffer.read(cx).snapshot(cx);
1440 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1441 if self.selection_count() == 1 {
1442 if oldest_selection.is_empty() {
1443 cx.propagate_action();
1444 return;
1445 }
1446
1447 oldest_selection.start = oldest_selection.head().clone();
1448 oldest_selection.end = oldest_selection.head().clone();
1449 }
1450 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1451 }
1452 }
1453
1454 #[cfg(any(test, feature = "test-support"))]
1455 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1456 &self,
1457 cx: &mut MutableAppContext,
1458 ) -> Vec<Range<D>> {
1459 self.local_selections::<D>(cx)
1460 .iter()
1461 .map(|s| {
1462 if s.reversed {
1463 s.end.clone()..s.start.clone()
1464 } else {
1465 s.start.clone()..s.end.clone()
1466 }
1467 })
1468 .collect()
1469 }
1470
1471 #[cfg(any(test, feature = "test-support"))]
1472 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1473 let display_map = self
1474 .display_map
1475 .update(cx, |display_map, cx| display_map.snapshot(cx));
1476 self.selections
1477 .iter()
1478 .chain(
1479 self.pending_selection
1480 .as_ref()
1481 .map(|pending| &pending.selection),
1482 )
1483 .map(|s| {
1484 if s.reversed {
1485 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1486 } else {
1487 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1488 }
1489 })
1490 .collect()
1491 }
1492
1493 pub fn select_ranges<I, T>(
1494 &mut self,
1495 ranges: I,
1496 autoscroll: Option<Autoscroll>,
1497 cx: &mut ViewContext<Self>,
1498 ) where
1499 I: IntoIterator<Item = Range<T>>,
1500 T: ToOffset,
1501 {
1502 let buffer = self.buffer.read(cx).snapshot(cx);
1503 let selections = ranges
1504 .into_iter()
1505 .map(|range| {
1506 let mut start = range.start.to_offset(&buffer);
1507 let mut end = range.end.to_offset(&buffer);
1508 let reversed = if start > end {
1509 mem::swap(&mut start, &mut end);
1510 true
1511 } else {
1512 false
1513 };
1514 Selection {
1515 id: post_inc(&mut self.next_selection_id),
1516 start,
1517 end,
1518 reversed,
1519 goal: SelectionGoal::None,
1520 }
1521 })
1522 .collect::<Vec<_>>();
1523 self.update_selections(selections, autoscroll, cx);
1524 }
1525
1526 #[cfg(any(test, feature = "test-support"))]
1527 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1528 where
1529 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1530 {
1531 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1532 let selections = ranges
1533 .into_iter()
1534 .map(|range| {
1535 let mut start = range.start;
1536 let mut end = range.end;
1537 let reversed = if start > end {
1538 mem::swap(&mut start, &mut end);
1539 true
1540 } else {
1541 false
1542 };
1543 Selection {
1544 id: post_inc(&mut self.next_selection_id),
1545 start: start.to_point(&display_map),
1546 end: end.to_point(&display_map),
1547 reversed,
1548 goal: SelectionGoal::None,
1549 }
1550 })
1551 .collect();
1552 self.update_selections(selections, None, cx);
1553 }
1554
1555 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1556 let text = action.0.as_ref();
1557 if !self.skip_autoclose_end(text, cx) {
1558 self.start_transaction(cx);
1559 self.insert(text, cx);
1560 self.autoclose_pairs(cx);
1561 self.end_transaction(cx);
1562 self.trigger_completion_on_input(text, cx);
1563 }
1564 }
1565
1566 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1567 self.start_transaction(cx);
1568 let mut old_selections = SmallVec::<[_; 32]>::new();
1569 {
1570 let selections = self.local_selections::<usize>(cx);
1571 let buffer = self.buffer.read(cx).snapshot(cx);
1572 for selection in selections.iter() {
1573 let start_point = selection.start.to_point(&buffer);
1574 let indent = buffer
1575 .indent_column_for_line(start_point.row)
1576 .min(start_point.column);
1577 let start = selection.start;
1578 let end = selection.end;
1579
1580 let mut insert_extra_newline = false;
1581 if let Some(language) = buffer.language() {
1582 let leading_whitespace_len = buffer
1583 .reversed_chars_at(start)
1584 .take_while(|c| c.is_whitespace() && *c != '\n')
1585 .map(|c| c.len_utf8())
1586 .sum::<usize>();
1587
1588 let trailing_whitespace_len = buffer
1589 .chars_at(end)
1590 .take_while(|c| c.is_whitespace() && *c != '\n')
1591 .map(|c| c.len_utf8())
1592 .sum::<usize>();
1593
1594 insert_extra_newline = language.brackets().iter().any(|pair| {
1595 let pair_start = pair.start.trim_end();
1596 let pair_end = pair.end.trim_start();
1597
1598 pair.newline
1599 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1600 && buffer.contains_str_at(
1601 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1602 pair_start,
1603 )
1604 });
1605 }
1606
1607 old_selections.push((
1608 selection.id,
1609 buffer.anchor_after(end),
1610 start..end,
1611 indent,
1612 insert_extra_newline,
1613 ));
1614 }
1615 }
1616
1617 self.buffer.update(cx, |buffer, cx| {
1618 let mut delta = 0_isize;
1619 let mut pending_edit: Option<PendingEdit> = None;
1620 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1621 if pending_edit.as_ref().map_or(false, |pending| {
1622 pending.indent != *indent
1623 || pending.insert_extra_newline != *insert_extra_newline
1624 }) {
1625 let pending = pending_edit.take().unwrap();
1626 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1627 new_text.push('\n');
1628 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1629 if pending.insert_extra_newline {
1630 new_text = new_text.repeat(2);
1631 }
1632 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1633 delta += pending.delta;
1634 }
1635
1636 let start = (range.start as isize + delta) as usize;
1637 let end = (range.end as isize + delta) as usize;
1638 let mut text_len = *indent as usize + 1;
1639 if *insert_extra_newline {
1640 text_len *= 2;
1641 }
1642
1643 let pending = pending_edit.get_or_insert_with(Default::default);
1644 pending.delta += text_len as isize - (end - start) as isize;
1645 pending.indent = *indent;
1646 pending.insert_extra_newline = *insert_extra_newline;
1647 pending.ranges.push(start..end);
1648 }
1649
1650 let pending = pending_edit.unwrap();
1651 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1652 new_text.push('\n');
1653 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1654 if pending.insert_extra_newline {
1655 new_text = new_text.repeat(2);
1656 }
1657 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1658
1659 let buffer = buffer.read(cx);
1660 self.selections = self
1661 .selections
1662 .iter()
1663 .cloned()
1664 .zip(old_selections)
1665 .map(
1666 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1667 let mut cursor = end_anchor.to_point(&buffer);
1668 if insert_extra_newline {
1669 cursor.row -= 1;
1670 cursor.column = buffer.line_len(cursor.row);
1671 }
1672 let anchor = buffer.anchor_after(cursor);
1673 new_selection.start = anchor.clone();
1674 new_selection.end = anchor;
1675 new_selection
1676 },
1677 )
1678 .collect();
1679 });
1680
1681 self.request_autoscroll(Autoscroll::Fit, cx);
1682 self.end_transaction(cx);
1683
1684 #[derive(Default)]
1685 struct PendingEdit {
1686 indent: u32,
1687 insert_extra_newline: bool,
1688 delta: isize,
1689 ranges: SmallVec<[Range<usize>; 32]>,
1690 }
1691 }
1692
1693 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1694 self.start_transaction(cx);
1695
1696 let old_selections = self.local_selections::<usize>(cx);
1697 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1698 let anchors = {
1699 let snapshot = buffer.read(cx);
1700 old_selections
1701 .iter()
1702 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1703 .collect::<Vec<_>>()
1704 };
1705 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1706 buffer.edit_with_autoindent(edit_ranges, text, cx);
1707 anchors
1708 });
1709
1710 let selections = {
1711 let snapshot = self.buffer.read(cx).read(cx);
1712 selection_anchors
1713 .into_iter()
1714 .map(|(id, goal, position)| {
1715 let position = position.to_offset(&snapshot);
1716 Selection {
1717 id,
1718 start: position,
1719 end: position,
1720 goal,
1721 reversed: false,
1722 }
1723 })
1724 .collect()
1725 };
1726 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1727 self.end_transaction(cx);
1728 }
1729
1730 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1731 if let Some(selection) = self.newest_anchor_selection() {
1732 if self
1733 .buffer
1734 .read(cx)
1735 .is_completion_trigger(selection.head(), text, cx)
1736 {
1737 self.show_completions(&ShowCompletions, cx);
1738 } else {
1739 self.hide_context_menu(cx);
1740 }
1741 }
1742 }
1743
1744 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1745 let selections = self.local_selections::<usize>(cx);
1746 let mut bracket_pair_state = None;
1747 let mut new_selections = None;
1748 self.buffer.update(cx, |buffer, cx| {
1749 let mut snapshot = buffer.snapshot(cx);
1750 let left_biased_selections = selections
1751 .iter()
1752 .map(|selection| Selection {
1753 id: selection.id,
1754 start: snapshot.anchor_before(selection.start),
1755 end: snapshot.anchor_before(selection.end),
1756 reversed: selection.reversed,
1757 goal: selection.goal,
1758 })
1759 .collect::<Vec<_>>();
1760
1761 let autoclose_pair = snapshot.language().and_then(|language| {
1762 let first_selection_start = selections.first().unwrap().start;
1763 let pair = language.brackets().iter().find(|pair| {
1764 snapshot.contains_str_at(
1765 first_selection_start.saturating_sub(pair.start.len()),
1766 &pair.start,
1767 )
1768 });
1769 pair.and_then(|pair| {
1770 let should_autoclose = selections[1..].iter().all(|selection| {
1771 snapshot.contains_str_at(
1772 selection.start.saturating_sub(pair.start.len()),
1773 &pair.start,
1774 )
1775 });
1776
1777 if should_autoclose {
1778 Some(pair.clone())
1779 } else {
1780 None
1781 }
1782 })
1783 });
1784
1785 if let Some(pair) = autoclose_pair {
1786 let selection_ranges = selections
1787 .iter()
1788 .map(|selection| {
1789 let start = selection.start.to_offset(&snapshot);
1790 start..start
1791 })
1792 .collect::<SmallVec<[_; 32]>>();
1793
1794 buffer.edit(selection_ranges, &pair.end, cx);
1795 snapshot = buffer.snapshot(cx);
1796
1797 new_selections = Some(
1798 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1799 .collect::<Vec<_>>(),
1800 );
1801
1802 if pair.end.len() == 1 {
1803 let mut delta = 0;
1804 bracket_pair_state = Some(BracketPairState {
1805 ranges: selections
1806 .iter()
1807 .map(move |selection| {
1808 let offset = selection.start + delta;
1809 delta += 1;
1810 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1811 })
1812 .collect(),
1813 pair,
1814 });
1815 }
1816 }
1817 });
1818
1819 if let Some(new_selections) = new_selections {
1820 self.update_selections(new_selections, None, cx);
1821 }
1822 if let Some(bracket_pair_state) = bracket_pair_state {
1823 self.autoclose_stack.push(bracket_pair_state);
1824 }
1825 }
1826
1827 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1828 let old_selections = self.local_selections::<usize>(cx);
1829 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1830 autoclose_pair
1831 } else {
1832 return false;
1833 };
1834 if text != autoclose_pair.pair.end {
1835 return false;
1836 }
1837
1838 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1839
1840 let buffer = self.buffer.read(cx).snapshot(cx);
1841 if old_selections
1842 .iter()
1843 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1844 .all(|(selection, autoclose_range)| {
1845 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1846 selection.is_empty() && selection.start == autoclose_range_end
1847 })
1848 {
1849 let new_selections = old_selections
1850 .into_iter()
1851 .map(|selection| {
1852 let cursor = selection.start + 1;
1853 Selection {
1854 id: selection.id,
1855 start: cursor,
1856 end: cursor,
1857 reversed: false,
1858 goal: SelectionGoal::None,
1859 }
1860 })
1861 .collect();
1862 self.autoclose_stack.pop();
1863 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1864 true
1865 } else {
1866 false
1867 }
1868 }
1869
1870 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
1871 let offset = position.to_offset(buffer);
1872 let (word_range, kind) = buffer.surrounding_word(offset);
1873 if offset > word_range.start && kind == Some(CharKind::Word) {
1874 Some(
1875 buffer
1876 .text_for_range(word_range.start..offset)
1877 .collect::<String>(),
1878 )
1879 } else {
1880 None
1881 }
1882 }
1883
1884 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
1885 let project = if let Some(workspace) = self.workspace.as_ref().and_then(|w| w.upgrade(cx)) {
1886 workspace.read(cx).project().clone()
1887 } else {
1888 return;
1889 };
1890
1891 let position = if let Some(selection) = self.newest_anchor_selection() {
1892 selection.head()
1893 } else {
1894 return;
1895 };
1896 let (buffer, buffer_position) = self
1897 .buffer
1898 .read(cx)
1899 .text_anchor_for_position(position.clone(), cx);
1900
1901 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
1902 let completions = project.update(cx, |project, cx| {
1903 project.completions(&buffer, buffer_position.clone(), cx)
1904 });
1905
1906 let id = post_inc(&mut self.next_completion_id);
1907 let task = cx.spawn_weak(|this, mut cx| {
1908 async move {
1909 let completions = completions.await?;
1910 if completions.is_empty() {
1911 return Ok(());
1912 }
1913
1914 let mut menu = CompletionsMenu {
1915 id,
1916 initial_position: position,
1917 match_candidates: completions
1918 .iter()
1919 .enumerate()
1920 .map(|(id, completion)| {
1921 StringMatchCandidate::new(
1922 id,
1923 completion.label.text[completion.label.filter_range.clone()].into(),
1924 )
1925 })
1926 .collect(),
1927 buffer,
1928 completions: completions.into(),
1929 matches: Vec::new().into(),
1930 selected_item: 0,
1931 list: Default::default(),
1932 };
1933
1934 menu.filter(query.as_deref(), cx.background()).await;
1935
1936 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
1937 this.update(&mut cx, |this, cx| {
1938 match this.context_menu.as_ref() {
1939 None => {}
1940 Some(ContextMenu::Completions(prev_menu)) => {
1941 if prev_menu.id > menu.id {
1942 return;
1943 }
1944 }
1945 _ => return,
1946 }
1947
1948 this.completion_tasks.retain(|(id, _)| *id > menu.id);
1949 if this.focused {
1950 this.show_context_menu(ContextMenu::Completions(menu), cx);
1951 }
1952
1953 cx.notify();
1954 });
1955 }
1956 Ok::<_, anyhow::Error>(())
1957 }
1958 .log_err()
1959 });
1960 self.completion_tasks.push((id, task));
1961 }
1962
1963 pub fn confirm_completion(
1964 &mut self,
1965 ConfirmCompletion(completion_ix): &ConfirmCompletion,
1966 cx: &mut ViewContext<Self>,
1967 ) -> Option<Task<Result<()>>> {
1968 use language::ToOffset as _;
1969
1970 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
1971 menu
1972 } else {
1973 return None;
1974 };
1975
1976 let mat = completions_menu
1977 .matches
1978 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
1979 let buffer_handle = completions_menu.buffer;
1980 let completion = completions_menu.completions.get(mat.candidate_id)?;
1981
1982 let snippet;
1983 let text;
1984 if completion.is_snippet() {
1985 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
1986 text = snippet.as_ref().unwrap().text.clone();
1987 } else {
1988 snippet = None;
1989 text = completion.new_text.clone();
1990 };
1991 let buffer = buffer_handle.read(cx);
1992 let old_range = completion.old_range.to_offset(&buffer);
1993 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
1994
1995 let selections = self.local_selections::<usize>(cx);
1996 let newest_selection = self.newest_anchor_selection()?;
1997 if newest_selection.start.buffer_id != buffer_handle.id() {
1998 return None;
1999 }
2000
2001 let lookbehind = newest_selection
2002 .start
2003 .text_anchor
2004 .to_offset(buffer)
2005 .saturating_sub(old_range.start);
2006 let lookahead = old_range
2007 .end
2008 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2009 let mut common_prefix_len = old_text
2010 .bytes()
2011 .zip(text.bytes())
2012 .take_while(|(a, b)| a == b)
2013 .count();
2014
2015 let snapshot = self.buffer.read(cx).snapshot(cx);
2016 let mut ranges = Vec::new();
2017 for selection in &selections {
2018 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2019 let start = selection.start.saturating_sub(lookbehind);
2020 let end = selection.end + lookahead;
2021 ranges.push(start + common_prefix_len..end);
2022 } else {
2023 common_prefix_len = 0;
2024 ranges.clear();
2025 ranges.extend(selections.iter().map(|s| {
2026 if s.id == newest_selection.id {
2027 old_range.clone()
2028 } else {
2029 s.start..s.end
2030 }
2031 }));
2032 break;
2033 }
2034 }
2035 let text = &text[common_prefix_len..];
2036
2037 self.start_transaction(cx);
2038 if let Some(mut snippet) = snippet {
2039 snippet.text = text.to_string();
2040 for tabstop in snippet.tabstops.iter_mut().flatten() {
2041 tabstop.start -= common_prefix_len as isize;
2042 tabstop.end -= common_prefix_len as isize;
2043 }
2044
2045 self.insert_snippet(&ranges, snippet, cx).log_err();
2046 } else {
2047 self.buffer.update(cx, |buffer, cx| {
2048 buffer.edit_with_autoindent(ranges, text, cx);
2049 });
2050 }
2051 self.end_transaction(cx);
2052
2053 let project = self
2054 .workspace
2055 .as_ref()?
2056 .upgrade(cx)?
2057 .read(cx)
2058 .project()
2059 .clone();
2060 let apply_edits = project.update(cx, |project, cx| {
2061 project.apply_additional_edits_for_completion(
2062 buffer_handle,
2063 completion.clone(),
2064 true,
2065 cx,
2066 )
2067 });
2068 Some(cx.foreground().spawn(async move {
2069 apply_edits.await?;
2070 Ok(())
2071 }))
2072 }
2073
2074 fn show_code_actions(&mut self, _: &ShowCodeActions, cx: &mut ViewContext<Self>) {
2075 let head = if let Some(selection) = self.newest_anchor_selection() {
2076 selection.head()
2077 } else {
2078 return;
2079 };
2080 let workspace = if let Some(workspace) = self.workspace.as_ref().and_then(|w| w.upgrade(cx))
2081 {
2082 workspace
2083 } else {
2084 return;
2085 };
2086
2087 let (buffer, head) = self.buffer.read(cx).text_anchor_for_position(head, cx);
2088 let actions = workspace
2089 .read(cx)
2090 .project()
2091 .clone()
2092 .update(cx, |project, cx| project.code_actions(&buffer, head, cx));
2093
2094 cx.spawn(|this, mut cx| async move {
2095 let actions = actions.await?;
2096 if !actions.is_empty() {
2097 this.update(&mut cx, |this, cx| {
2098 if this.focused {
2099 this.show_context_menu(
2100 ContextMenu::CodeActions(CodeActionsMenu {
2101 buffer,
2102 actions: actions.into(),
2103 selected_item: 0,
2104 list: UniformListState::default(),
2105 }),
2106 cx,
2107 );
2108 }
2109 });
2110 }
2111 Ok::<_, anyhow::Error>(())
2112 })
2113 .detach_and_log_err(cx);
2114 }
2115
2116 fn confirm_code_action(
2117 &mut self,
2118 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2119 cx: &mut ViewContext<Self>,
2120 ) -> Option<Task<Result<()>>> {
2121 let workspace = self.workspace.as_ref()?.upgrade(cx)?;
2122
2123 let actions_menu = if let ContextMenu::CodeActions(menu) = self.hide_context_menu(cx)? {
2124 menu
2125 } else {
2126 return None;
2127 };
2128 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2129 let action = actions_menu.actions.get(action_ix)?.clone();
2130 let buffer = actions_menu.buffer;
2131
2132 let apply_code_actions = workspace
2133 .read(cx)
2134 .project()
2135 .clone()
2136 .update(cx, |project, cx| {
2137 project.apply_code_action(buffer, action, true, cx)
2138 });
2139 Some(cx.spawn(|_, mut cx| async move {
2140 let project_transaction = apply_code_actions.await?;
2141
2142 // TODO: replace this with opening a single tab that is a multibuffer
2143 workspace.update(&mut cx, |workspace, cx| {
2144 for (buffer, _) in project_transaction.0 {
2145 workspace.open_item(BufferItemHandle(buffer), cx);
2146 }
2147 });
2148
2149 Ok(())
2150 }))
2151 }
2152
2153 pub fn showing_context_menu(&self) -> bool {
2154 self.context_menu
2155 .as_ref()
2156 .map_or(false, |menu| menu.visible())
2157 }
2158
2159 pub fn render_context_menu(&self, cx: &AppContext) -> Option<ElementBox> {
2160 self.context_menu
2161 .as_ref()
2162 .map(|menu| menu.render(self.build_settings.clone(), cx))
2163 }
2164
2165 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2166 if !matches!(menu, ContextMenu::Completions(_)) {
2167 self.completion_tasks.clear();
2168 }
2169 self.context_menu = Some(menu);
2170 cx.notify()
2171 }
2172
2173 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2174 cx.notify();
2175 self.completion_tasks.clear();
2176 self.context_menu.take()
2177 }
2178
2179 pub fn insert_snippet(
2180 &mut self,
2181 insertion_ranges: &[Range<usize>],
2182 snippet: Snippet,
2183 cx: &mut ViewContext<Self>,
2184 ) -> Result<()> {
2185 let tabstops = self.buffer.update(cx, |buffer, cx| {
2186 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2187
2188 let snapshot = &*buffer.read(cx);
2189 let snippet = &snippet;
2190 snippet
2191 .tabstops
2192 .iter()
2193 .map(|tabstop| {
2194 let mut tabstop_ranges = tabstop
2195 .iter()
2196 .flat_map(|tabstop_range| {
2197 let mut delta = 0 as isize;
2198 insertion_ranges.iter().map(move |insertion_range| {
2199 let insertion_start = insertion_range.start as isize + delta;
2200 delta +=
2201 snippet.text.len() as isize - insertion_range.len() as isize;
2202
2203 let start = snapshot.anchor_before(
2204 (insertion_start + tabstop_range.start) as usize,
2205 );
2206 let end = snapshot
2207 .anchor_after((insertion_start + tabstop_range.end) as usize);
2208 start..end
2209 })
2210 })
2211 .collect::<Vec<_>>();
2212 tabstop_ranges
2213 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2214 tabstop_ranges
2215 })
2216 .collect::<Vec<_>>()
2217 });
2218
2219 if let Some(tabstop) = tabstops.first() {
2220 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2221 self.snippet_stack.push(SnippetState {
2222 active_index: 0,
2223 ranges: tabstops,
2224 });
2225 }
2226
2227 Ok(())
2228 }
2229
2230 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2231 self.move_to_snippet_tabstop(Bias::Right, cx)
2232 }
2233
2234 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2235 self.move_to_snippet_tabstop(Bias::Left, cx);
2236 }
2237
2238 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2239 let buffer = self.buffer.read(cx).snapshot(cx);
2240
2241 if let Some(snippet) = self.snippet_stack.last_mut() {
2242 match bias {
2243 Bias::Left => {
2244 if snippet.active_index > 0 {
2245 snippet.active_index -= 1;
2246 } else {
2247 return false;
2248 }
2249 }
2250 Bias::Right => {
2251 if snippet.active_index + 1 < snippet.ranges.len() {
2252 snippet.active_index += 1;
2253 } else {
2254 return false;
2255 }
2256 }
2257 }
2258 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2259 let new_selections = current_ranges
2260 .iter()
2261 .map(|new_range| {
2262 let new_range = new_range.to_offset(&buffer);
2263 Selection {
2264 id: post_inc(&mut self.next_selection_id),
2265 start: new_range.start,
2266 end: new_range.end,
2267 reversed: false,
2268 goal: SelectionGoal::None,
2269 }
2270 })
2271 .collect();
2272
2273 // Remove the snippet state when moving to the last tabstop.
2274 if snippet.active_index + 1 == snippet.ranges.len() {
2275 self.snippet_stack.pop();
2276 }
2277
2278 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2279 return true;
2280 }
2281 self.snippet_stack.pop();
2282 }
2283
2284 false
2285 }
2286
2287 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2288 self.start_transaction(cx);
2289 self.select_all(&SelectAll, cx);
2290 self.insert("", cx);
2291 self.end_transaction(cx);
2292 }
2293
2294 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2295 self.start_transaction(cx);
2296 let mut selections = self.local_selections::<Point>(cx);
2297 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2298 for selection in &mut selections {
2299 if selection.is_empty() {
2300 let head = selection.head().to_display_point(&display_map);
2301 let cursor = movement::left(&display_map, head)
2302 .unwrap()
2303 .to_point(&display_map);
2304 selection.set_head(cursor);
2305 selection.goal = SelectionGoal::None;
2306 }
2307 }
2308 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2309 self.insert("", cx);
2310 self.end_transaction(cx);
2311 }
2312
2313 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2314 self.start_transaction(cx);
2315 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2316 let mut selections = self.local_selections::<Point>(cx);
2317 for selection in &mut selections {
2318 if selection.is_empty() {
2319 let head = selection.head().to_display_point(&display_map);
2320 let cursor = movement::right(&display_map, head)
2321 .unwrap()
2322 .to_point(&display_map);
2323 selection.set_head(cursor);
2324 selection.goal = SelectionGoal::None;
2325 }
2326 }
2327 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2328 self.insert(&"", cx);
2329 self.end_transaction(cx);
2330 }
2331
2332 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2333 if self.move_to_next_snippet_tabstop(cx) {
2334 return;
2335 }
2336
2337 self.start_transaction(cx);
2338 let tab_size = (self.build_settings)(cx).tab_size;
2339 let mut selections = self.local_selections::<Point>(cx);
2340 let mut last_indent = None;
2341 self.buffer.update(cx, |buffer, cx| {
2342 for selection in &mut selections {
2343 if selection.is_empty() {
2344 let char_column = buffer
2345 .read(cx)
2346 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2347 .flat_map(str::chars)
2348 .count();
2349 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2350 buffer.edit(
2351 [selection.start..selection.start],
2352 " ".repeat(chars_to_next_tab_stop),
2353 cx,
2354 );
2355 selection.start.column += chars_to_next_tab_stop as u32;
2356 selection.end = selection.start;
2357 } else {
2358 let mut start_row = selection.start.row;
2359 let mut end_row = selection.end.row + 1;
2360
2361 // If a selection ends at the beginning of a line, don't indent
2362 // that last line.
2363 if selection.end.column == 0 {
2364 end_row -= 1;
2365 }
2366
2367 // Avoid re-indenting a row that has already been indented by a
2368 // previous selection, but still update this selection's column
2369 // to reflect that indentation.
2370 if let Some((last_indent_row, last_indent_len)) = last_indent {
2371 if last_indent_row == selection.start.row {
2372 selection.start.column += last_indent_len;
2373 start_row += 1;
2374 }
2375 if last_indent_row == selection.end.row {
2376 selection.end.column += last_indent_len;
2377 }
2378 }
2379
2380 for row in start_row..end_row {
2381 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2382 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2383 let row_start = Point::new(row, 0);
2384 buffer.edit(
2385 [row_start..row_start],
2386 " ".repeat(columns_to_next_tab_stop),
2387 cx,
2388 );
2389
2390 // Update this selection's endpoints to reflect the indentation.
2391 if row == selection.start.row {
2392 selection.start.column += columns_to_next_tab_stop as u32;
2393 }
2394 if row == selection.end.row {
2395 selection.end.column += columns_to_next_tab_stop as u32;
2396 }
2397
2398 last_indent = Some((row, columns_to_next_tab_stop as u32));
2399 }
2400 }
2401 }
2402 });
2403
2404 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2405 self.end_transaction(cx);
2406 }
2407
2408 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2409 if !self.snippet_stack.is_empty() {
2410 self.move_to_prev_snippet_tabstop(cx);
2411 return;
2412 }
2413
2414 self.start_transaction(cx);
2415 let tab_size = (self.build_settings)(cx).tab_size;
2416 let selections = self.local_selections::<Point>(cx);
2417 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2418 let mut deletion_ranges = Vec::new();
2419 let mut last_outdent = None;
2420 {
2421 let buffer = self.buffer.read(cx).read(cx);
2422 for selection in &selections {
2423 let mut rows = selection.spanned_rows(false, &display_map);
2424
2425 // Avoid re-outdenting a row that has already been outdented by a
2426 // previous selection.
2427 if let Some(last_row) = last_outdent {
2428 if last_row == rows.start {
2429 rows.start += 1;
2430 }
2431 }
2432
2433 for row in rows {
2434 let column = buffer.indent_column_for_line(row) as usize;
2435 if column > 0 {
2436 let mut deletion_len = (column % tab_size) as u32;
2437 if deletion_len == 0 {
2438 deletion_len = tab_size as u32;
2439 }
2440 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2441 last_outdent = Some(row);
2442 }
2443 }
2444 }
2445 }
2446 self.buffer.update(cx, |buffer, cx| {
2447 buffer.edit(deletion_ranges, "", cx);
2448 });
2449
2450 self.update_selections(
2451 self.local_selections::<usize>(cx),
2452 Some(Autoscroll::Fit),
2453 cx,
2454 );
2455 self.end_transaction(cx);
2456 }
2457
2458 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2459 self.start_transaction(cx);
2460
2461 let selections = self.local_selections::<Point>(cx);
2462 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2463 let buffer = self.buffer.read(cx).snapshot(cx);
2464
2465 let mut new_cursors = Vec::new();
2466 let mut edit_ranges = Vec::new();
2467 let mut selections = selections.iter().peekable();
2468 while let Some(selection) = selections.next() {
2469 let mut rows = selection.spanned_rows(false, &display_map);
2470 let goal_display_column = selection.head().to_display_point(&display_map).column();
2471
2472 // Accumulate contiguous regions of rows that we want to delete.
2473 while let Some(next_selection) = selections.peek() {
2474 let next_rows = next_selection.spanned_rows(false, &display_map);
2475 if next_rows.start <= rows.end {
2476 rows.end = next_rows.end;
2477 selections.next().unwrap();
2478 } else {
2479 break;
2480 }
2481 }
2482
2483 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2484 let edit_end;
2485 let cursor_buffer_row;
2486 if buffer.max_point().row >= rows.end {
2487 // If there's a line after the range, delete the \n from the end of the row range
2488 // and position the cursor on the next line.
2489 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2490 cursor_buffer_row = rows.end;
2491 } else {
2492 // If there isn't a line after the range, delete the \n from the line before the
2493 // start of the row range and position the cursor there.
2494 edit_start = edit_start.saturating_sub(1);
2495 edit_end = buffer.len();
2496 cursor_buffer_row = rows.start.saturating_sub(1);
2497 }
2498
2499 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2500 *cursor.column_mut() =
2501 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2502
2503 new_cursors.push((
2504 selection.id,
2505 buffer.anchor_after(cursor.to_point(&display_map)),
2506 ));
2507 edit_ranges.push(edit_start..edit_end);
2508 }
2509
2510 let buffer = self.buffer.update(cx, |buffer, cx| {
2511 buffer.edit(edit_ranges, "", cx);
2512 buffer.snapshot(cx)
2513 });
2514 let new_selections = new_cursors
2515 .into_iter()
2516 .map(|(id, cursor)| {
2517 let cursor = cursor.to_point(&buffer);
2518 Selection {
2519 id,
2520 start: cursor,
2521 end: cursor,
2522 reversed: false,
2523 goal: SelectionGoal::None,
2524 }
2525 })
2526 .collect();
2527 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2528 self.end_transaction(cx);
2529 }
2530
2531 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2532 self.start_transaction(cx);
2533
2534 let selections = self.local_selections::<Point>(cx);
2535 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2536 let buffer = &display_map.buffer_snapshot;
2537
2538 let mut edits = Vec::new();
2539 let mut selections_iter = selections.iter().peekable();
2540 while let Some(selection) = selections_iter.next() {
2541 // Avoid duplicating the same lines twice.
2542 let mut rows = selection.spanned_rows(false, &display_map);
2543
2544 while let Some(next_selection) = selections_iter.peek() {
2545 let next_rows = next_selection.spanned_rows(false, &display_map);
2546 if next_rows.start <= rows.end - 1 {
2547 rows.end = next_rows.end;
2548 selections_iter.next().unwrap();
2549 } else {
2550 break;
2551 }
2552 }
2553
2554 // Copy the text from the selected row region and splice it at the start of the region.
2555 let start = Point::new(rows.start, 0);
2556 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2557 let text = buffer
2558 .text_for_range(start..end)
2559 .chain(Some("\n"))
2560 .collect::<String>();
2561 edits.push((start, text, rows.len() as u32));
2562 }
2563
2564 self.buffer.update(cx, |buffer, cx| {
2565 for (point, text, _) in edits.into_iter().rev() {
2566 buffer.edit(Some(point..point), text, cx);
2567 }
2568 });
2569
2570 self.request_autoscroll(Autoscroll::Fit, cx);
2571 self.end_transaction(cx);
2572 }
2573
2574 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2575 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2576 let buffer = self.buffer.read(cx).snapshot(cx);
2577
2578 let mut edits = Vec::new();
2579 let mut unfold_ranges = Vec::new();
2580 let mut refold_ranges = Vec::new();
2581
2582 let selections = self.local_selections::<Point>(cx);
2583 let mut selections = selections.iter().peekable();
2584 let mut contiguous_row_selections = Vec::new();
2585 let mut new_selections = Vec::new();
2586
2587 while let Some(selection) = selections.next() {
2588 // Find all the selections that span a contiguous row range
2589 contiguous_row_selections.push(selection.clone());
2590 let start_row = selection.start.row;
2591 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2592 display_map.next_line_boundary(selection.end).0.row + 1
2593 } else {
2594 selection.end.row
2595 };
2596
2597 while let Some(next_selection) = selections.peek() {
2598 if next_selection.start.row <= end_row {
2599 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2600 display_map.next_line_boundary(next_selection.end).0.row + 1
2601 } else {
2602 next_selection.end.row
2603 };
2604 contiguous_row_selections.push(selections.next().unwrap().clone());
2605 } else {
2606 break;
2607 }
2608 }
2609
2610 // Move the text spanned by the row range to be before the line preceding the row range
2611 if start_row > 0 {
2612 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2613 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2614 let insertion_point = display_map
2615 .prev_line_boundary(Point::new(start_row - 1, 0))
2616 .0;
2617
2618 // Don't move lines across excerpts
2619 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
2620 let text = buffer
2621 .text_for_range(range_to_move.clone())
2622 .flat_map(|s| s.chars())
2623 .skip(1)
2624 .chain(['\n'])
2625 .collect::<String>();
2626
2627 edits.push((
2628 buffer.anchor_after(range_to_move.start)
2629 ..buffer.anchor_before(range_to_move.end),
2630 String::new(),
2631 ));
2632 let insertion_anchor = buffer.anchor_after(insertion_point);
2633 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2634
2635 let row_delta = range_to_move.start.row - insertion_point.row + 1;
2636
2637 // Move selections up
2638 new_selections.extend(contiguous_row_selections.drain(..).map(
2639 |mut selection| {
2640 selection.start.row -= row_delta;
2641 selection.end.row -= row_delta;
2642 selection
2643 },
2644 ));
2645
2646 // Move folds up
2647 unfold_ranges.push(range_to_move.clone());
2648 for fold in display_map.folds_in_range(
2649 buffer.anchor_before(range_to_move.start)
2650 ..buffer.anchor_after(range_to_move.end),
2651 ) {
2652 let mut start = fold.start.to_point(&buffer);
2653 let mut end = fold.end.to_point(&buffer);
2654 start.row -= row_delta;
2655 end.row -= row_delta;
2656 refold_ranges.push(start..end);
2657 }
2658 }
2659 }
2660
2661 // If we didn't move line(s), preserve the existing selections
2662 new_selections.extend(contiguous_row_selections.drain(..));
2663 }
2664
2665 self.start_transaction(cx);
2666 self.unfold_ranges(unfold_ranges, cx);
2667 self.buffer.update(cx, |buffer, cx| {
2668 for (range, text) in edits {
2669 buffer.edit([range], text, cx);
2670 }
2671 });
2672 self.fold_ranges(refold_ranges, cx);
2673 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2674 self.end_transaction(cx);
2675 }
2676
2677 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
2678 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2679 let buffer = self.buffer.read(cx).snapshot(cx);
2680
2681 let mut edits = Vec::new();
2682 let mut unfold_ranges = Vec::new();
2683 let mut refold_ranges = Vec::new();
2684
2685 let selections = self.local_selections::<Point>(cx);
2686 let mut selections = selections.iter().peekable();
2687 let mut contiguous_row_selections = Vec::new();
2688 let mut new_selections = Vec::new();
2689
2690 while let Some(selection) = selections.next() {
2691 // Find all the selections that span a contiguous row range
2692 contiguous_row_selections.push(selection.clone());
2693 let start_row = selection.start.row;
2694 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2695 display_map.next_line_boundary(selection.end).0.row + 1
2696 } else {
2697 selection.end.row
2698 };
2699
2700 while let Some(next_selection) = selections.peek() {
2701 if next_selection.start.row <= end_row {
2702 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2703 display_map.next_line_boundary(next_selection.end).0.row + 1
2704 } else {
2705 next_selection.end.row
2706 };
2707 contiguous_row_selections.push(selections.next().unwrap().clone());
2708 } else {
2709 break;
2710 }
2711 }
2712
2713 // Move the text spanned by the row range to be after the last line of the row range
2714 if end_row <= buffer.max_point().row {
2715 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
2716 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
2717
2718 // Don't move lines across excerpt boundaries
2719 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
2720 let mut text = String::from("\n");
2721 text.extend(buffer.text_for_range(range_to_move.clone()));
2722 text.pop(); // Drop trailing newline
2723 edits.push((
2724 buffer.anchor_after(range_to_move.start)
2725 ..buffer.anchor_before(range_to_move.end),
2726 String::new(),
2727 ));
2728 let insertion_anchor = buffer.anchor_after(insertion_point);
2729 edits.push((insertion_anchor.clone()..insertion_anchor, text));
2730
2731 let row_delta = insertion_point.row - range_to_move.end.row + 1;
2732
2733 // Move selections down
2734 new_selections.extend(contiguous_row_selections.drain(..).map(
2735 |mut selection| {
2736 selection.start.row += row_delta;
2737 selection.end.row += row_delta;
2738 selection
2739 },
2740 ));
2741
2742 // Move folds down
2743 unfold_ranges.push(range_to_move.clone());
2744 for fold in display_map.folds_in_range(
2745 buffer.anchor_before(range_to_move.start)
2746 ..buffer.anchor_after(range_to_move.end),
2747 ) {
2748 let mut start = fold.start.to_point(&buffer);
2749 let mut end = fold.end.to_point(&buffer);
2750 start.row += row_delta;
2751 end.row += row_delta;
2752 refold_ranges.push(start..end);
2753 }
2754 }
2755 }
2756
2757 // If we didn't move line(s), preserve the existing selections
2758 new_selections.extend(contiguous_row_selections.drain(..));
2759 }
2760
2761 self.start_transaction(cx);
2762 self.unfold_ranges(unfold_ranges, cx);
2763 self.buffer.update(cx, |buffer, cx| {
2764 for (range, text) in edits {
2765 buffer.edit([range], text, cx);
2766 }
2767 });
2768 self.fold_ranges(refold_ranges, cx);
2769 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2770 self.end_transaction(cx);
2771 }
2772
2773 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
2774 self.start_transaction(cx);
2775 let mut text = String::new();
2776 let mut selections = self.local_selections::<Point>(cx);
2777 let mut clipboard_selections = Vec::with_capacity(selections.len());
2778 {
2779 let buffer = self.buffer.read(cx).read(cx);
2780 let max_point = buffer.max_point();
2781 for selection in &mut selections {
2782 let is_entire_line = selection.is_empty();
2783 if is_entire_line {
2784 selection.start = Point::new(selection.start.row, 0);
2785 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
2786 selection.goal = SelectionGoal::None;
2787 }
2788 let mut len = 0;
2789 for chunk in buffer.text_for_range(selection.start..selection.end) {
2790 text.push_str(chunk);
2791 len += chunk.len();
2792 }
2793 clipboard_selections.push(ClipboardSelection {
2794 len,
2795 is_entire_line,
2796 });
2797 }
2798 }
2799 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2800 self.insert("", cx);
2801 self.end_transaction(cx);
2802
2803 cx.as_mut()
2804 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2805 }
2806
2807 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
2808 let selections = self.local_selections::<Point>(cx);
2809 let mut text = String::new();
2810 let mut clipboard_selections = Vec::with_capacity(selections.len());
2811 {
2812 let buffer = self.buffer.read(cx).read(cx);
2813 let max_point = buffer.max_point();
2814 for selection in selections.iter() {
2815 let mut start = selection.start;
2816 let mut end = selection.end;
2817 let is_entire_line = selection.is_empty();
2818 if is_entire_line {
2819 start = Point::new(start.row, 0);
2820 end = cmp::min(max_point, Point::new(start.row + 1, 0));
2821 }
2822 let mut len = 0;
2823 for chunk in buffer.text_for_range(start..end) {
2824 text.push_str(chunk);
2825 len += chunk.len();
2826 }
2827 clipboard_selections.push(ClipboardSelection {
2828 len,
2829 is_entire_line,
2830 });
2831 }
2832 }
2833
2834 cx.as_mut()
2835 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
2836 }
2837
2838 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
2839 if let Some(item) = cx.as_mut().read_from_clipboard() {
2840 let clipboard_text = item.text();
2841 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
2842 let mut selections = self.local_selections::<usize>(cx);
2843 let all_selections_were_entire_line =
2844 clipboard_selections.iter().all(|s| s.is_entire_line);
2845 if clipboard_selections.len() != selections.len() {
2846 clipboard_selections.clear();
2847 }
2848
2849 let mut delta = 0_isize;
2850 let mut start_offset = 0;
2851 for (i, selection) in selections.iter_mut().enumerate() {
2852 let to_insert;
2853 let entire_line;
2854 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2855 let end_offset = start_offset + clipboard_selection.len;
2856 to_insert = &clipboard_text[start_offset..end_offset];
2857 entire_line = clipboard_selection.is_entire_line;
2858 start_offset = end_offset
2859 } else {
2860 to_insert = clipboard_text.as_str();
2861 entire_line = all_selections_were_entire_line;
2862 }
2863
2864 selection.start = (selection.start as isize + delta) as usize;
2865 selection.end = (selection.end as isize + delta) as usize;
2866
2867 self.buffer.update(cx, |buffer, cx| {
2868 // If the corresponding selection was empty when this slice of the
2869 // clipboard text was written, then the entire line containing the
2870 // selection was copied. If this selection is also currently empty,
2871 // then paste the line before the current line of the buffer.
2872 let range = if selection.is_empty() && entire_line {
2873 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2874 let line_start = selection.start - column;
2875 line_start..line_start
2876 } else {
2877 selection.start..selection.end
2878 };
2879
2880 delta += to_insert.len() as isize - range.len() as isize;
2881 buffer.edit([range], to_insert, cx);
2882 selection.start += to_insert.len();
2883 selection.end = selection.start;
2884 });
2885 }
2886 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2887 } else {
2888 self.insert(clipboard_text, cx);
2889 }
2890 }
2891 }
2892
2893 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2894 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2895 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2896 self.set_selections(selections, cx);
2897 }
2898 self.request_autoscroll(Autoscroll::Fit, cx);
2899 }
2900 }
2901
2902 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2903 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2904 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2905 self.set_selections(selections, cx);
2906 }
2907 self.request_autoscroll(Autoscroll::Fit, cx);
2908 }
2909 }
2910
2911 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2912 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2913 let mut selections = self.local_selections::<Point>(cx);
2914 for selection in &mut selections {
2915 let start = selection.start.to_display_point(&display_map);
2916 let end = selection.end.to_display_point(&display_map);
2917
2918 if start != end {
2919 selection.end = selection.start.clone();
2920 } else {
2921 let cursor = movement::left(&display_map, start)
2922 .unwrap()
2923 .to_point(&display_map);
2924 selection.start = cursor.clone();
2925 selection.end = cursor;
2926 }
2927 selection.reversed = false;
2928 selection.goal = SelectionGoal::None;
2929 }
2930 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2931 }
2932
2933 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2934 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2935 let mut selections = self.local_selections::<Point>(cx);
2936 for selection in &mut selections {
2937 let head = selection.head().to_display_point(&display_map);
2938 let cursor = movement::left(&display_map, head)
2939 .unwrap()
2940 .to_point(&display_map);
2941 selection.set_head(cursor);
2942 selection.goal = SelectionGoal::None;
2943 }
2944 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2945 }
2946
2947 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2948 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2949 let mut selections = self.local_selections::<Point>(cx);
2950 for selection in &mut selections {
2951 let start = selection.start.to_display_point(&display_map);
2952 let end = selection.end.to_display_point(&display_map);
2953
2954 if start != end {
2955 selection.start = selection.end.clone();
2956 } else {
2957 let cursor = movement::right(&display_map, end)
2958 .unwrap()
2959 .to_point(&display_map);
2960 selection.start = cursor;
2961 selection.end = cursor;
2962 }
2963 selection.reversed = false;
2964 selection.goal = SelectionGoal::None;
2965 }
2966 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2967 }
2968
2969 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2970 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2971 let mut selections = self.local_selections::<Point>(cx);
2972 for selection in &mut selections {
2973 let head = selection.head().to_display_point(&display_map);
2974 let cursor = movement::right(&display_map, head)
2975 .unwrap()
2976 .to_point(&display_map);
2977 selection.set_head(cursor);
2978 selection.goal = SelectionGoal::None;
2979 }
2980 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2981 }
2982
2983 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2984 if let Some(context_menu) = self.context_menu.as_mut() {
2985 if context_menu.select_prev(cx) {
2986 return;
2987 }
2988 }
2989
2990 if matches!(self.mode, EditorMode::SingleLine) {
2991 cx.propagate_action();
2992 return;
2993 }
2994
2995 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2996 let mut selections = self.local_selections::<Point>(cx);
2997 for selection in &mut selections {
2998 let start = selection.start.to_display_point(&display_map);
2999 let end = selection.end.to_display_point(&display_map);
3000 if start != end {
3001 selection.goal = SelectionGoal::None;
3002 }
3003
3004 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3005 let cursor = start.to_point(&display_map);
3006 selection.start = cursor;
3007 selection.end = cursor;
3008 selection.goal = goal;
3009 selection.reversed = false;
3010 }
3011 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3012 }
3013
3014 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3015 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3016 let mut selections = self.local_selections::<Point>(cx);
3017 for selection in &mut selections {
3018 let head = selection.head().to_display_point(&display_map);
3019 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3020 let cursor = head.to_point(&display_map);
3021 selection.set_head(cursor);
3022 selection.goal = goal;
3023 }
3024 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3025 }
3026
3027 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3028 if let Some(context_menu) = self.context_menu.as_mut() {
3029 if context_menu.select_next(cx) {
3030 return;
3031 }
3032 }
3033
3034 if matches!(self.mode, EditorMode::SingleLine) {
3035 cx.propagate_action();
3036 return;
3037 }
3038
3039 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3040 let mut selections = self.local_selections::<Point>(cx);
3041 for selection in &mut selections {
3042 let start = selection.start.to_display_point(&display_map);
3043 let end = selection.end.to_display_point(&display_map);
3044 if start != end {
3045 selection.goal = SelectionGoal::None;
3046 }
3047
3048 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3049 let cursor = start.to_point(&display_map);
3050 selection.start = cursor;
3051 selection.end = cursor;
3052 selection.goal = goal;
3053 selection.reversed = false;
3054 }
3055 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3056 }
3057
3058 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3059 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3060 let mut selections = self.local_selections::<Point>(cx);
3061 for selection in &mut selections {
3062 let head = selection.head().to_display_point(&display_map);
3063 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3064 let cursor = head.to_point(&display_map);
3065 selection.set_head(cursor);
3066 selection.goal = goal;
3067 }
3068 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3069 }
3070
3071 pub fn move_to_previous_word_boundary(
3072 &mut self,
3073 _: &MoveToPreviousWordBoundary,
3074 cx: &mut ViewContext<Self>,
3075 ) {
3076 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3077 let mut selections = self.local_selections::<Point>(cx);
3078 for selection in &mut selections {
3079 let head = selection.head().to_display_point(&display_map);
3080 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3081 selection.start = cursor.clone();
3082 selection.end = cursor;
3083 selection.reversed = false;
3084 selection.goal = SelectionGoal::None;
3085 }
3086 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3087 }
3088
3089 pub fn select_to_previous_word_boundary(
3090 &mut self,
3091 _: &SelectToPreviousWordBoundary,
3092 cx: &mut ViewContext<Self>,
3093 ) {
3094 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3095 let mut selections = self.local_selections::<Point>(cx);
3096 for selection in &mut selections {
3097 let head = selection.head().to_display_point(&display_map);
3098 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3099 selection.set_head(cursor);
3100 selection.goal = SelectionGoal::None;
3101 }
3102 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3103 }
3104
3105 pub fn delete_to_previous_word_boundary(
3106 &mut self,
3107 _: &DeleteToPreviousWordBoundary,
3108 cx: &mut ViewContext<Self>,
3109 ) {
3110 self.start_transaction(cx);
3111 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3112 let mut selections = self.local_selections::<Point>(cx);
3113 for selection in &mut selections {
3114 if selection.is_empty() {
3115 let head = selection.head().to_display_point(&display_map);
3116 let cursor =
3117 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3118 selection.set_head(cursor);
3119 selection.goal = SelectionGoal::None;
3120 }
3121 }
3122 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3123 self.insert("", cx);
3124 self.end_transaction(cx);
3125 }
3126
3127 pub fn move_to_next_word_boundary(
3128 &mut self,
3129 _: &MoveToNextWordBoundary,
3130 cx: &mut ViewContext<Self>,
3131 ) {
3132 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3133 let mut selections = self.local_selections::<Point>(cx);
3134 for selection in &mut selections {
3135 let head = selection.head().to_display_point(&display_map);
3136 let cursor = movement::next_word_boundary(&display_map, 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_next_word_boundary(
3146 &mut self,
3147 _: &SelectToNextWordBoundary,
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 cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3155 selection.set_head(cursor);
3156 selection.goal = SelectionGoal::None;
3157 }
3158 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3159 }
3160
3161 pub fn delete_to_next_word_boundary(
3162 &mut self,
3163 _: &DeleteToNextWordBoundary,
3164 cx: &mut ViewContext<Self>,
3165 ) {
3166 self.start_transaction(cx);
3167 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3168 let mut selections = self.local_selections::<Point>(cx);
3169 for selection in &mut selections {
3170 if selection.is_empty() {
3171 let head = selection.head().to_display_point(&display_map);
3172 let cursor =
3173 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3174 selection.set_head(cursor);
3175 selection.goal = SelectionGoal::None;
3176 }
3177 }
3178 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3179 self.insert("", cx);
3180 self.end_transaction(cx);
3181 }
3182
3183 pub fn move_to_beginning_of_line(
3184 &mut self,
3185 _: &MoveToBeginningOfLine,
3186 cx: &mut ViewContext<Self>,
3187 ) {
3188 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3189 let mut selections = self.local_selections::<Point>(cx);
3190 for selection in &mut selections {
3191 let head = selection.head().to_display_point(&display_map);
3192 let new_head = movement::line_beginning(&display_map, head, true);
3193 let cursor = new_head.to_point(&display_map);
3194 selection.start = cursor;
3195 selection.end = cursor;
3196 selection.reversed = false;
3197 selection.goal = SelectionGoal::None;
3198 }
3199 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3200 }
3201
3202 pub fn select_to_beginning_of_line(
3203 &mut self,
3204 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3205 cx: &mut ViewContext<Self>,
3206 ) {
3207 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3208 let mut selections = self.local_selections::<Point>(cx);
3209 for selection in &mut selections {
3210 let head = selection.head().to_display_point(&display_map);
3211 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3212 selection.set_head(new_head.to_point(&display_map));
3213 selection.goal = SelectionGoal::None;
3214 }
3215 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3216 }
3217
3218 pub fn delete_to_beginning_of_line(
3219 &mut self,
3220 _: &DeleteToBeginningOfLine,
3221 cx: &mut ViewContext<Self>,
3222 ) {
3223 self.start_transaction(cx);
3224 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3225 self.backspace(&Backspace, cx);
3226 self.end_transaction(cx);
3227 }
3228
3229 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3230 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3231 let mut selections = self.local_selections::<Point>(cx);
3232 {
3233 for selection in &mut selections {
3234 let head = selection.head().to_display_point(&display_map);
3235 let new_head = movement::line_end(&display_map, head, true);
3236 let anchor = new_head.to_point(&display_map);
3237 selection.start = anchor.clone();
3238 selection.end = anchor;
3239 selection.reversed = false;
3240 selection.goal = SelectionGoal::None;
3241 }
3242 }
3243 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3244 }
3245
3246 pub fn select_to_end_of_line(
3247 &mut self,
3248 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3249 cx: &mut ViewContext<Self>,
3250 ) {
3251 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3252 let mut selections = self.local_selections::<Point>(cx);
3253 for selection in &mut selections {
3254 let head = selection.head().to_display_point(&display_map);
3255 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3256 selection.set_head(new_head.to_point(&display_map));
3257 selection.goal = SelectionGoal::None;
3258 }
3259 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3260 }
3261
3262 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3263 self.start_transaction(cx);
3264 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3265 self.delete(&Delete, cx);
3266 self.end_transaction(cx);
3267 }
3268
3269 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3270 self.start_transaction(cx);
3271 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3272 self.cut(&Cut, cx);
3273 self.end_transaction(cx);
3274 }
3275
3276 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3277 if matches!(self.mode, EditorMode::SingleLine) {
3278 cx.propagate_action();
3279 return;
3280 }
3281
3282 let selection = Selection {
3283 id: post_inc(&mut self.next_selection_id),
3284 start: 0,
3285 end: 0,
3286 reversed: false,
3287 goal: SelectionGoal::None,
3288 };
3289 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3290 }
3291
3292 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3293 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3294 selection.set_head(Point::zero());
3295 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3296 }
3297
3298 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3299 if matches!(self.mode, EditorMode::SingleLine) {
3300 cx.propagate_action();
3301 return;
3302 }
3303
3304 let cursor = self.buffer.read(cx).read(cx).len();
3305 let selection = Selection {
3306 id: post_inc(&mut self.next_selection_id),
3307 start: cursor,
3308 end: cursor,
3309 reversed: false,
3310 goal: SelectionGoal::None,
3311 };
3312 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3313 }
3314
3315 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3316 self.nav_history = nav_history;
3317 }
3318
3319 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3320 self.nav_history.as_ref()
3321 }
3322
3323 fn push_to_nav_history(
3324 &self,
3325 position: Anchor,
3326 new_position: Option<Point>,
3327 cx: &mut ViewContext<Self>,
3328 ) {
3329 if let Some(nav_history) = &self.nav_history {
3330 let buffer = self.buffer.read(cx).read(cx);
3331 let offset = position.to_offset(&buffer);
3332 let point = position.to_point(&buffer);
3333 drop(buffer);
3334
3335 if let Some(new_position) = new_position {
3336 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3337 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3338 return;
3339 }
3340 }
3341
3342 nav_history.push(Some(NavigationData {
3343 anchor: position,
3344 offset,
3345 }));
3346 }
3347 }
3348
3349 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3350 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3351 selection.set_head(self.buffer.read(cx).read(cx).len());
3352 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3353 }
3354
3355 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3356 let selection = Selection {
3357 id: post_inc(&mut self.next_selection_id),
3358 start: 0,
3359 end: self.buffer.read(cx).read(cx).len(),
3360 reversed: false,
3361 goal: SelectionGoal::None,
3362 };
3363 self.update_selections(vec![selection], None, cx);
3364 }
3365
3366 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3367 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3368 let mut selections = self.local_selections::<Point>(cx);
3369 let max_point = display_map.buffer_snapshot.max_point();
3370 for selection in &mut selections {
3371 let rows = selection.spanned_rows(true, &display_map);
3372 selection.start = Point::new(rows.start, 0);
3373 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3374 selection.reversed = false;
3375 }
3376 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3377 }
3378
3379 pub fn split_selection_into_lines(
3380 &mut self,
3381 _: &SplitSelectionIntoLines,
3382 cx: &mut ViewContext<Self>,
3383 ) {
3384 let mut to_unfold = Vec::new();
3385 let mut new_selections = Vec::new();
3386 {
3387 let selections = self.local_selections::<Point>(cx);
3388 let buffer = self.buffer.read(cx).read(cx);
3389 for selection in selections {
3390 for row in selection.start.row..selection.end.row {
3391 let cursor = Point::new(row, buffer.line_len(row));
3392 new_selections.push(Selection {
3393 id: post_inc(&mut self.next_selection_id),
3394 start: cursor,
3395 end: cursor,
3396 reversed: false,
3397 goal: SelectionGoal::None,
3398 });
3399 }
3400 new_selections.push(Selection {
3401 id: selection.id,
3402 start: selection.end,
3403 end: selection.end,
3404 reversed: false,
3405 goal: SelectionGoal::None,
3406 });
3407 to_unfold.push(selection.start..selection.end);
3408 }
3409 }
3410 self.unfold_ranges(to_unfold, cx);
3411 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3412 }
3413
3414 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3415 self.add_selection(true, cx);
3416 }
3417
3418 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3419 self.add_selection(false, cx);
3420 }
3421
3422 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3423 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3424 let mut selections = self.local_selections::<Point>(cx);
3425 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3426 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3427 let range = oldest_selection.display_range(&display_map).sorted();
3428 let columns = cmp::min(range.start.column(), range.end.column())
3429 ..cmp::max(range.start.column(), range.end.column());
3430
3431 selections.clear();
3432 let mut stack = Vec::new();
3433 for row in range.start.row()..=range.end.row() {
3434 if let Some(selection) = self.build_columnar_selection(
3435 &display_map,
3436 row,
3437 &columns,
3438 oldest_selection.reversed,
3439 ) {
3440 stack.push(selection.id);
3441 selections.push(selection);
3442 }
3443 }
3444
3445 if above {
3446 stack.reverse();
3447 }
3448
3449 AddSelectionsState { above, stack }
3450 });
3451
3452 let last_added_selection = *state.stack.last().unwrap();
3453 let mut new_selections = Vec::new();
3454 if above == state.above {
3455 let end_row = if above {
3456 0
3457 } else {
3458 display_map.max_point().row()
3459 };
3460
3461 'outer: for selection in selections {
3462 if selection.id == last_added_selection {
3463 let range = selection.display_range(&display_map).sorted();
3464 debug_assert_eq!(range.start.row(), range.end.row());
3465 let mut row = range.start.row();
3466 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3467 {
3468 start..end
3469 } else {
3470 cmp::min(range.start.column(), range.end.column())
3471 ..cmp::max(range.start.column(), range.end.column())
3472 };
3473
3474 while row != end_row {
3475 if above {
3476 row -= 1;
3477 } else {
3478 row += 1;
3479 }
3480
3481 if let Some(new_selection) = self.build_columnar_selection(
3482 &display_map,
3483 row,
3484 &columns,
3485 selection.reversed,
3486 ) {
3487 state.stack.push(new_selection.id);
3488 if above {
3489 new_selections.push(new_selection);
3490 new_selections.push(selection);
3491 } else {
3492 new_selections.push(selection);
3493 new_selections.push(new_selection);
3494 }
3495
3496 continue 'outer;
3497 }
3498 }
3499 }
3500
3501 new_selections.push(selection);
3502 }
3503 } else {
3504 new_selections = selections;
3505 new_selections.retain(|s| s.id != last_added_selection);
3506 state.stack.pop();
3507 }
3508
3509 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3510 if state.stack.len() > 1 {
3511 self.add_selections_state = Some(state);
3512 }
3513 }
3514
3515 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3516 let replace_newest = action.0;
3517 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3518 let buffer = &display_map.buffer_snapshot;
3519 let mut selections = self.local_selections::<usize>(cx);
3520 if let Some(mut select_next_state) = self.select_next_state.take() {
3521 let query = &select_next_state.query;
3522 if !select_next_state.done {
3523 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3524 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3525 let mut next_selected_range = None;
3526
3527 let bytes_after_last_selection =
3528 buffer.bytes_in_range(last_selection.end..buffer.len());
3529 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3530 let query_matches = query
3531 .stream_find_iter(bytes_after_last_selection)
3532 .map(|result| (last_selection.end, result))
3533 .chain(
3534 query
3535 .stream_find_iter(bytes_before_first_selection)
3536 .map(|result| (0, result)),
3537 );
3538 for (start_offset, query_match) in query_matches {
3539 let query_match = query_match.unwrap(); // can only fail due to I/O
3540 let offset_range =
3541 start_offset + query_match.start()..start_offset + query_match.end();
3542 let display_range = offset_range.start.to_display_point(&display_map)
3543 ..offset_range.end.to_display_point(&display_map);
3544
3545 if !select_next_state.wordwise
3546 || (!movement::is_inside_word(&display_map, display_range.start)
3547 && !movement::is_inside_word(&display_map, display_range.end))
3548 {
3549 next_selected_range = Some(offset_range);
3550 break;
3551 }
3552 }
3553
3554 if let Some(next_selected_range) = next_selected_range {
3555 if replace_newest {
3556 if let Some(newest_id) =
3557 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3558 {
3559 selections.retain(|s| s.id != newest_id);
3560 }
3561 }
3562 selections.push(Selection {
3563 id: post_inc(&mut self.next_selection_id),
3564 start: next_selected_range.start,
3565 end: next_selected_range.end,
3566 reversed: false,
3567 goal: SelectionGoal::None,
3568 });
3569 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3570 } else {
3571 select_next_state.done = true;
3572 }
3573 }
3574
3575 self.select_next_state = Some(select_next_state);
3576 } else if selections.len() == 1 {
3577 let selection = selections.last_mut().unwrap();
3578 if selection.start == selection.end {
3579 let word_range = movement::surrounding_word(
3580 &display_map,
3581 selection.start.to_display_point(&display_map),
3582 );
3583 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3584 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3585 selection.goal = SelectionGoal::None;
3586 selection.reversed = false;
3587
3588 let query = buffer
3589 .text_for_range(selection.start..selection.end)
3590 .collect::<String>();
3591 let select_state = SelectNextState {
3592 query: AhoCorasick::new_auto_configured(&[query]),
3593 wordwise: true,
3594 done: false,
3595 };
3596 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3597 self.select_next_state = Some(select_state);
3598 } else {
3599 let query = buffer
3600 .text_for_range(selection.start..selection.end)
3601 .collect::<String>();
3602 self.select_next_state = Some(SelectNextState {
3603 query: AhoCorasick::new_auto_configured(&[query]),
3604 wordwise: false,
3605 done: false,
3606 });
3607 self.select_next(action, cx);
3608 }
3609 }
3610 }
3611
3612 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3613 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3614 // as that portion won't be used for detecting if a line is a comment.
3615 let full_comment_prefix =
3616 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3617 prefix.to_string()
3618 } else {
3619 return;
3620 };
3621 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3622 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3623
3624 self.start_transaction(cx);
3625 let mut selections = self.local_selections::<Point>(cx);
3626 let mut all_selection_lines_are_comments = true;
3627 let mut edit_ranges = Vec::new();
3628 let mut last_toggled_row = None;
3629 self.buffer.update(cx, |buffer, cx| {
3630 for selection in &mut selections {
3631 edit_ranges.clear();
3632 let snapshot = buffer.snapshot(cx);
3633
3634 let end_row =
3635 if selection.end.row > selection.start.row && selection.end.column == 0 {
3636 selection.end.row
3637 } else {
3638 selection.end.row + 1
3639 };
3640
3641 for row in selection.start.row..end_row {
3642 // If multiple selections contain a given row, avoid processing that
3643 // row more than once.
3644 if last_toggled_row == Some(row) {
3645 continue;
3646 } else {
3647 last_toggled_row = Some(row);
3648 }
3649
3650 if snapshot.is_line_blank(row) {
3651 continue;
3652 }
3653
3654 let start = Point::new(row, snapshot.indent_column_for_line(row));
3655 let mut line_bytes = snapshot
3656 .bytes_in_range(start..snapshot.max_point())
3657 .flatten()
3658 .copied();
3659
3660 // If this line currently begins with the line comment prefix, then record
3661 // the range containing the prefix.
3662 if all_selection_lines_are_comments
3663 && line_bytes
3664 .by_ref()
3665 .take(comment_prefix.len())
3666 .eq(comment_prefix.bytes())
3667 {
3668 // Include any whitespace that matches the comment prefix.
3669 let matching_whitespace_len = line_bytes
3670 .zip(comment_prefix_whitespace.bytes())
3671 .take_while(|(a, b)| a == b)
3672 .count() as u32;
3673 let end = Point::new(
3674 row,
3675 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
3676 );
3677 edit_ranges.push(start..end);
3678 }
3679 // If this line does not begin with the line comment prefix, then record
3680 // the position where the prefix should be inserted.
3681 else {
3682 all_selection_lines_are_comments = false;
3683 edit_ranges.push(start..start);
3684 }
3685 }
3686
3687 if !edit_ranges.is_empty() {
3688 if all_selection_lines_are_comments {
3689 buffer.edit(edit_ranges.iter().cloned(), "", cx);
3690 } else {
3691 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
3692 let edit_ranges = edit_ranges.iter().map(|range| {
3693 let position = Point::new(range.start.row, min_column);
3694 position..position
3695 });
3696 buffer.edit(edit_ranges, &full_comment_prefix, cx);
3697 }
3698 }
3699 }
3700 });
3701
3702 self.update_selections(
3703 self.local_selections::<usize>(cx),
3704 Some(Autoscroll::Fit),
3705 cx,
3706 );
3707 self.end_transaction(cx);
3708 }
3709
3710 pub fn select_larger_syntax_node(
3711 &mut self,
3712 _: &SelectLargerSyntaxNode,
3713 cx: &mut ViewContext<Self>,
3714 ) {
3715 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
3716 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3717 let buffer = self.buffer.read(cx).snapshot(cx);
3718
3719 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3720 let mut selected_larger_node = false;
3721 let new_selections = old_selections
3722 .iter()
3723 .map(|selection| {
3724 let old_range = selection.start..selection.end;
3725 let mut new_range = old_range.clone();
3726 while let Some(containing_range) =
3727 buffer.range_for_syntax_ancestor(new_range.clone())
3728 {
3729 new_range = containing_range;
3730 if !display_map.intersects_fold(new_range.start)
3731 && !display_map.intersects_fold(new_range.end)
3732 {
3733 break;
3734 }
3735 }
3736
3737 selected_larger_node |= new_range != old_range;
3738 Selection {
3739 id: selection.id,
3740 start: new_range.start,
3741 end: new_range.end,
3742 goal: SelectionGoal::None,
3743 reversed: selection.reversed,
3744 }
3745 })
3746 .collect::<Vec<_>>();
3747
3748 if selected_larger_node {
3749 stack.push(old_selections);
3750 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3751 }
3752 self.select_larger_syntax_node_stack = stack;
3753 }
3754
3755 pub fn select_smaller_syntax_node(
3756 &mut self,
3757 _: &SelectSmallerSyntaxNode,
3758 cx: &mut ViewContext<Self>,
3759 ) {
3760 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
3761 if let Some(selections) = stack.pop() {
3762 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
3763 }
3764 self.select_larger_syntax_node_stack = stack;
3765 }
3766
3767 pub fn move_to_enclosing_bracket(
3768 &mut self,
3769 _: &MoveToEnclosingBracket,
3770 cx: &mut ViewContext<Self>,
3771 ) {
3772 let mut selections = self.local_selections::<usize>(cx);
3773 let buffer = self.buffer.read(cx).snapshot(cx);
3774 for selection in &mut selections {
3775 if let Some((open_range, close_range)) =
3776 buffer.enclosing_bracket_ranges(selection.start..selection.end)
3777 {
3778 let close_range = close_range.to_inclusive();
3779 let destination = if close_range.contains(&selection.start)
3780 && close_range.contains(&selection.end)
3781 {
3782 open_range.end
3783 } else {
3784 *close_range.start()
3785 };
3786 selection.start = destination;
3787 selection.end = destination;
3788 }
3789 }
3790
3791 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3792 }
3793
3794 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
3795 let buffer = self.buffer.read(cx).snapshot(cx);
3796 let selection = self.newest_selection::<usize>(&buffer);
3797 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
3798 active_diagnostics
3799 .primary_range
3800 .to_offset(&buffer)
3801 .to_inclusive()
3802 });
3803 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
3804 if active_primary_range.contains(&selection.head()) {
3805 *active_primary_range.end()
3806 } else {
3807 selection.head()
3808 }
3809 } else {
3810 selection.head()
3811 };
3812
3813 loop {
3814 let next_group = buffer
3815 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
3816 .find_map(|entry| {
3817 if entry.diagnostic.is_primary
3818 && !entry.range.is_empty()
3819 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
3820 {
3821 Some((entry.range, entry.diagnostic.group_id))
3822 } else {
3823 None
3824 }
3825 });
3826
3827 if let Some((primary_range, group_id)) = next_group {
3828 self.activate_diagnostics(group_id, cx);
3829 self.update_selections(
3830 vec![Selection {
3831 id: selection.id,
3832 start: primary_range.start,
3833 end: primary_range.start,
3834 reversed: false,
3835 goal: SelectionGoal::None,
3836 }],
3837 Some(Autoscroll::Center),
3838 cx,
3839 );
3840 break;
3841 } else if search_start == 0 {
3842 break;
3843 } else {
3844 // Cycle around to the start of the buffer, potentially moving back to the start of
3845 // the currently active diagnostic.
3846 search_start = 0;
3847 active_primary_range.take();
3848 }
3849 }
3850 }
3851
3852 pub fn go_to_definition(
3853 workspace: &mut Workspace,
3854 _: &GoToDefinition,
3855 cx: &mut ViewContext<Workspace>,
3856 ) {
3857 let active_item = workspace.active_item(cx);
3858 let editor_handle = if let Some(editor) = active_item
3859 .as_ref()
3860 .and_then(|item| item.act_as::<Self>(cx))
3861 {
3862 editor
3863 } else {
3864 return;
3865 };
3866
3867 let editor = editor_handle.read(cx);
3868 let buffer = editor.buffer.read(cx);
3869 let head = editor.newest_selection::<usize>(&buffer.read(cx)).head();
3870 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx);
3871 let definitions = workspace
3872 .project()
3873 .update(cx, |project, cx| project.definition(&buffer, head, cx));
3874 cx.spawn(|workspace, mut cx| async move {
3875 let definitions = definitions.await?;
3876 workspace.update(&mut cx, |workspace, cx| {
3877 for definition in definitions {
3878 let range = definition
3879 .target_range
3880 .to_offset(definition.target_buffer.read(cx));
3881 let target_editor_handle = workspace
3882 .open_item(BufferItemHandle(definition.target_buffer), cx)
3883 .downcast::<Self>()
3884 .unwrap();
3885
3886 target_editor_handle.update(cx, |target_editor, cx| {
3887 // When selecting a definition in a different buffer, disable the nav history
3888 // to avoid creating a history entry at the previous cursor location.
3889 let disabled_history = if editor_handle == target_editor_handle {
3890 None
3891 } else {
3892 target_editor.nav_history.take()
3893 };
3894 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
3895 if disabled_history.is_some() {
3896 target_editor.nav_history = disabled_history;
3897 }
3898 });
3899 }
3900 });
3901
3902 Ok::<(), anyhow::Error>(())
3903 })
3904 .detach_and_log_err(cx);
3905 }
3906
3907 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
3908 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
3909 let buffer = self.buffer.read(cx).snapshot(cx);
3910 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
3911 let is_valid = buffer
3912 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
3913 .any(|entry| {
3914 entry.diagnostic.is_primary
3915 && !entry.range.is_empty()
3916 && entry.range.start == primary_range_start
3917 && entry.diagnostic.message == active_diagnostics.primary_message
3918 });
3919
3920 if is_valid != active_diagnostics.is_valid {
3921 active_diagnostics.is_valid = is_valid;
3922 let mut new_styles = HashMap::default();
3923 for (block_id, diagnostic) in &active_diagnostics.blocks {
3924 new_styles.insert(
3925 *block_id,
3926 diagnostic_block_renderer(
3927 diagnostic.clone(),
3928 is_valid,
3929 self.build_settings.clone(),
3930 ),
3931 );
3932 }
3933 self.display_map
3934 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
3935 }
3936 }
3937 }
3938
3939 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
3940 self.dismiss_diagnostics(cx);
3941 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
3942 let buffer = self.buffer.read(cx).snapshot(cx);
3943
3944 let mut primary_range = None;
3945 let mut primary_message = None;
3946 let mut group_end = Point::zero();
3947 let diagnostic_group = buffer
3948 .diagnostic_group::<Point>(group_id)
3949 .map(|entry| {
3950 if entry.range.end > group_end {
3951 group_end = entry.range.end;
3952 }
3953 if entry.diagnostic.is_primary {
3954 primary_range = Some(entry.range.clone());
3955 primary_message = Some(entry.diagnostic.message.clone());
3956 }
3957 entry
3958 })
3959 .collect::<Vec<_>>();
3960 let primary_range = primary_range.unwrap();
3961 let primary_message = primary_message.unwrap();
3962 let primary_range =
3963 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
3964
3965 let blocks = display_map
3966 .insert_blocks(
3967 diagnostic_group.iter().map(|entry| {
3968 let build_settings = self.build_settings.clone();
3969 let diagnostic = entry.diagnostic.clone();
3970 let message_height = diagnostic.message.lines().count() as u8;
3971
3972 BlockProperties {
3973 position: buffer.anchor_after(entry.range.start),
3974 height: message_height,
3975 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3976 disposition: BlockDisposition::Below,
3977 }
3978 }),
3979 cx,
3980 )
3981 .into_iter()
3982 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3983 .collect();
3984
3985 Some(ActiveDiagnosticGroup {
3986 primary_range,
3987 primary_message,
3988 blocks,
3989 is_valid: true,
3990 })
3991 });
3992 }
3993
3994 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3995 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3996 self.display_map.update(cx, |display_map, cx| {
3997 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3998 });
3999 cx.notify();
4000 }
4001 }
4002
4003 fn build_columnar_selection(
4004 &mut self,
4005 display_map: &DisplaySnapshot,
4006 row: u32,
4007 columns: &Range<u32>,
4008 reversed: bool,
4009 ) -> Option<Selection<Point>> {
4010 let is_empty = columns.start == columns.end;
4011 let line_len = display_map.line_len(row);
4012 if columns.start < line_len || (is_empty && columns.start == line_len) {
4013 let start = DisplayPoint::new(row, columns.start);
4014 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4015 Some(Selection {
4016 id: post_inc(&mut self.next_selection_id),
4017 start: start.to_point(display_map),
4018 end: end.to_point(display_map),
4019 reversed,
4020 goal: SelectionGoal::ColumnRange {
4021 start: columns.start,
4022 end: columns.end,
4023 },
4024 })
4025 } else {
4026 None
4027 }
4028 }
4029
4030 pub fn local_selections_in_range(
4031 &self,
4032 range: Range<Anchor>,
4033 display_map: &DisplaySnapshot,
4034 ) -> Vec<Selection<Point>> {
4035 let buffer = &display_map.buffer_snapshot;
4036
4037 let start_ix = match self
4038 .selections
4039 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4040 {
4041 Ok(ix) | Err(ix) => ix,
4042 };
4043 let end_ix = match self
4044 .selections
4045 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4046 {
4047 Ok(ix) => ix + 1,
4048 Err(ix) => ix,
4049 };
4050
4051 fn point_selection(
4052 selection: &Selection<Anchor>,
4053 buffer: &MultiBufferSnapshot,
4054 ) -> Selection<Point> {
4055 let start = selection.start.to_point(&buffer);
4056 let end = selection.end.to_point(&buffer);
4057 Selection {
4058 id: selection.id,
4059 start,
4060 end,
4061 reversed: selection.reversed,
4062 goal: selection.goal,
4063 }
4064 }
4065
4066 self.selections[start_ix..end_ix]
4067 .iter()
4068 .chain(
4069 self.pending_selection
4070 .as_ref()
4071 .map(|pending| &pending.selection),
4072 )
4073 .map(|s| point_selection(s, &buffer))
4074 .collect()
4075 }
4076
4077 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4078 where
4079 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4080 {
4081 let buffer = self.buffer.read(cx).snapshot(cx);
4082 let mut selections = self
4083 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4084 .peekable();
4085
4086 let mut pending_selection = self.pending_selection::<D>(&buffer);
4087
4088 iter::from_fn(move || {
4089 if let Some(pending) = pending_selection.as_mut() {
4090 while let Some(next_selection) = selections.peek() {
4091 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4092 let next_selection = selections.next().unwrap();
4093 if next_selection.start < pending.start {
4094 pending.start = next_selection.start;
4095 }
4096 if next_selection.end > pending.end {
4097 pending.end = next_selection.end;
4098 }
4099 } else if next_selection.end < pending.start {
4100 return selections.next();
4101 } else {
4102 break;
4103 }
4104 }
4105
4106 pending_selection.take()
4107 } else {
4108 selections.next()
4109 }
4110 })
4111 .collect()
4112 }
4113
4114 fn resolve_selections<'a, D, I>(
4115 &self,
4116 selections: I,
4117 snapshot: &MultiBufferSnapshot,
4118 ) -> impl 'a + Iterator<Item = Selection<D>>
4119 where
4120 D: TextDimension + Ord + Sub<D, Output = D>,
4121 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4122 {
4123 let (to_summarize, selections) = selections.into_iter().tee();
4124 let mut summaries = snapshot
4125 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4126 .into_iter();
4127 selections.map(move |s| Selection {
4128 id: s.id,
4129 start: summaries.next().unwrap(),
4130 end: summaries.next().unwrap(),
4131 reversed: s.reversed,
4132 goal: s.goal,
4133 })
4134 }
4135
4136 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4137 &self,
4138 snapshot: &MultiBufferSnapshot,
4139 ) -> Option<Selection<D>> {
4140 self.pending_selection
4141 .as_ref()
4142 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4143 }
4144
4145 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4146 &self,
4147 selection: &Selection<Anchor>,
4148 buffer: &MultiBufferSnapshot,
4149 ) -> Selection<D> {
4150 Selection {
4151 id: selection.id,
4152 start: selection.start.summary::<D>(&buffer),
4153 end: selection.end.summary::<D>(&buffer),
4154 reversed: selection.reversed,
4155 goal: selection.goal,
4156 }
4157 }
4158
4159 fn selection_count<'a>(&self) -> usize {
4160 let mut count = self.selections.len();
4161 if self.pending_selection.is_some() {
4162 count += 1;
4163 }
4164 count
4165 }
4166
4167 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4168 &self,
4169 snapshot: &MultiBufferSnapshot,
4170 ) -> Selection<D> {
4171 self.selections
4172 .iter()
4173 .min_by_key(|s| s.id)
4174 .map(|selection| self.resolve_selection(selection, snapshot))
4175 .or_else(|| self.pending_selection(snapshot))
4176 .unwrap()
4177 }
4178
4179 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4180 &self,
4181 snapshot: &MultiBufferSnapshot,
4182 ) -> Selection<D> {
4183 self.resolve_selection(self.newest_anchor_selection().unwrap(), snapshot)
4184 }
4185
4186 pub fn newest_anchor_selection(&self) -> Option<&Selection<Anchor>> {
4187 self.pending_selection
4188 .as_ref()
4189 .map(|s| &s.selection)
4190 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4191 }
4192
4193 pub fn update_selections<T>(
4194 &mut self,
4195 mut selections: Vec<Selection<T>>,
4196 autoscroll: Option<Autoscroll>,
4197 cx: &mut ViewContext<Self>,
4198 ) where
4199 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4200 {
4201 let buffer = self.buffer.read(cx).snapshot(cx);
4202 selections.sort_unstable_by_key(|s| s.start);
4203
4204 // Merge overlapping selections.
4205 let mut i = 1;
4206 while i < selections.len() {
4207 if selections[i - 1].end >= selections[i].start {
4208 let removed = selections.remove(i);
4209 if removed.start < selections[i - 1].start {
4210 selections[i - 1].start = removed.start;
4211 }
4212 if removed.end > selections[i - 1].end {
4213 selections[i - 1].end = removed.end;
4214 }
4215 } else {
4216 i += 1;
4217 }
4218 }
4219
4220 if let Some(autoscroll) = autoscroll {
4221 self.request_autoscroll(autoscroll, cx);
4222 }
4223
4224 self.set_selections(
4225 Arc::from_iter(selections.into_iter().map(|selection| {
4226 let end_bias = if selection.end > selection.start {
4227 Bias::Left
4228 } else {
4229 Bias::Right
4230 };
4231 Selection {
4232 id: selection.id,
4233 start: buffer.anchor_after(selection.start),
4234 end: buffer.anchor_at(selection.end, end_bias),
4235 reversed: selection.reversed,
4236 goal: selection.goal,
4237 }
4238 })),
4239 cx,
4240 );
4241 }
4242
4243 /// Compute new ranges for any selections that were located in excerpts that have
4244 /// since been removed.
4245 ///
4246 /// Returns a `HashMap` indicating which selections whose former head position
4247 /// was no longer present. The keys of the map are selection ids. The values are
4248 /// the id of the new excerpt where the head of the selection has been moved.
4249 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4250 let snapshot = self.buffer.read(cx).read(cx);
4251 let anchors_with_status = snapshot.refresh_anchors(
4252 self.selections
4253 .iter()
4254 .flat_map(|selection| [&selection.start, &selection.end]),
4255 );
4256 let offsets =
4257 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4258 let offsets = offsets.chunks(2);
4259 let statuses = anchors_with_status
4260 .chunks(2)
4261 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4262
4263 let mut selections_with_lost_position = HashMap::default();
4264 let new_selections = offsets
4265 .zip(statuses)
4266 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4267 let selection = &self.selections[selection_ix];
4268 let kept_head = if selection.reversed {
4269 kept_start
4270 } else {
4271 kept_end
4272 };
4273 if !kept_head {
4274 selections_with_lost_position
4275 .insert(selection.id, selection.head().excerpt_id.clone());
4276 }
4277
4278 Selection {
4279 id: selection.id,
4280 start: offsets[0],
4281 end: offsets[1],
4282 reversed: selection.reversed,
4283 goal: selection.goal,
4284 }
4285 })
4286 .collect();
4287 drop(snapshot);
4288 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4289 selections_with_lost_position
4290 }
4291
4292 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
4293 let old_cursor_position = self.newest_anchor_selection().map(|s| s.head());
4294 self.selections = selections;
4295 if self.focused {
4296 self.buffer.update(cx, |buffer, cx| {
4297 buffer.set_active_selections(&self.selections, cx)
4298 });
4299 }
4300
4301 let buffer = self.buffer.read(cx).snapshot(cx);
4302 self.pending_selection = None;
4303 self.add_selections_state = None;
4304 self.select_next_state = None;
4305 self.select_larger_syntax_node_stack.clear();
4306 self.autoclose_stack.invalidate(&self.selections, &buffer);
4307 self.snippet_stack.invalidate(&self.selections, &buffer);
4308
4309 let new_cursor_position = self
4310 .selections
4311 .iter()
4312 .max_by_key(|s| s.id)
4313 .map(|s| s.head());
4314 if let Some(old_cursor_position) = old_cursor_position {
4315 if let Some(new_cursor_position) = new_cursor_position.as_ref() {
4316 self.push_to_nav_history(
4317 old_cursor_position,
4318 Some(new_cursor_position.to_point(&buffer)),
4319 cx,
4320 );
4321 }
4322 }
4323
4324 let completion_menu = match self.context_menu.as_mut() {
4325 Some(ContextMenu::Completions(menu)) => Some(menu),
4326 _ => {
4327 self.context_menu.take();
4328 None
4329 }
4330 };
4331
4332 if let Some((completion_menu, cursor_position)) = completion_menu.zip(new_cursor_position) {
4333 let cursor_position = cursor_position.to_offset(&buffer);
4334 let (word_range, kind) =
4335 buffer.surrounding_word(completion_menu.initial_position.clone());
4336 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
4337 {
4338 let query = Self::completion_query(&buffer, cursor_position);
4339 cx.background()
4340 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
4341 self.show_completions(&ShowCompletions, cx);
4342 } else {
4343 self.hide_context_menu(cx);
4344 }
4345 }
4346
4347 self.pause_cursor_blinking(cx);
4348 cx.emit(Event::SelectionsChanged);
4349 }
4350
4351 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
4352 self.autoscroll_request = Some(autoscroll);
4353 cx.notify();
4354 }
4355
4356 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
4357 self.start_transaction_at(Instant::now(), cx);
4358 }
4359
4360 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4361 self.end_selection(cx);
4362 if let Some(tx_id) = self
4363 .buffer
4364 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
4365 {
4366 self.selection_history
4367 .insert(tx_id, (self.selections.clone(), None));
4368 }
4369 }
4370
4371 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
4372 self.end_transaction_at(Instant::now(), cx);
4373 }
4374
4375 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
4376 if let Some(tx_id) = self
4377 .buffer
4378 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
4379 {
4380 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
4381 *end_selections = Some(self.selections.clone());
4382 } else {
4383 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
4384 }
4385 }
4386 }
4387
4388 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
4389 log::info!("Editor::page_up");
4390 }
4391
4392 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
4393 log::info!("Editor::page_down");
4394 }
4395
4396 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
4397 let mut fold_ranges = Vec::new();
4398
4399 let selections = self.local_selections::<Point>(cx);
4400 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4401 for selection in selections {
4402 let range = selection.display_range(&display_map).sorted();
4403 let buffer_start_row = range.start.to_point(&display_map).row;
4404
4405 for row in (0..=range.end.row()).rev() {
4406 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
4407 let fold_range = self.foldable_range_for_line(&display_map, row);
4408 if fold_range.end.row >= buffer_start_row {
4409 fold_ranges.push(fold_range);
4410 if row <= range.start.row() {
4411 break;
4412 }
4413 }
4414 }
4415 }
4416 }
4417
4418 self.fold_ranges(fold_ranges, cx);
4419 }
4420
4421 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
4422 let selections = self.local_selections::<Point>(cx);
4423 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4424 let buffer = &display_map.buffer_snapshot;
4425 let ranges = selections
4426 .iter()
4427 .map(|s| {
4428 let range = s.display_range(&display_map).sorted();
4429 let mut start = range.start.to_point(&display_map);
4430 let mut end = range.end.to_point(&display_map);
4431 start.column = 0;
4432 end.column = buffer.line_len(end.row);
4433 start..end
4434 })
4435 .collect::<Vec<_>>();
4436 self.unfold_ranges(ranges, cx);
4437 }
4438
4439 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
4440 let max_point = display_map.max_point();
4441 if display_row >= max_point.row() {
4442 false
4443 } else {
4444 let (start_indent, is_blank) = display_map.line_indent(display_row);
4445 if is_blank {
4446 false
4447 } else {
4448 for display_row in display_row + 1..=max_point.row() {
4449 let (indent, is_blank) = display_map.line_indent(display_row);
4450 if !is_blank {
4451 return indent > start_indent;
4452 }
4453 }
4454 false
4455 }
4456 }
4457 }
4458
4459 fn foldable_range_for_line(
4460 &self,
4461 display_map: &DisplaySnapshot,
4462 start_row: u32,
4463 ) -> Range<Point> {
4464 let max_point = display_map.max_point();
4465
4466 let (start_indent, _) = display_map.line_indent(start_row);
4467 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
4468 let mut end = None;
4469 for row in start_row + 1..=max_point.row() {
4470 let (indent, is_blank) = display_map.line_indent(row);
4471 if !is_blank && indent <= start_indent {
4472 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
4473 break;
4474 }
4475 }
4476
4477 let end = end.unwrap_or(max_point);
4478 return start.to_point(display_map)..end.to_point(display_map);
4479 }
4480
4481 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
4482 let selections = self.local_selections::<Point>(cx);
4483 let ranges = selections.into_iter().map(|s| s.start..s.end);
4484 self.fold_ranges(ranges, cx);
4485 }
4486
4487 fn fold_ranges<T: ToOffset>(
4488 &mut self,
4489 ranges: impl IntoIterator<Item = Range<T>>,
4490 cx: &mut ViewContext<Self>,
4491 ) {
4492 let mut ranges = ranges.into_iter().peekable();
4493 if ranges.peek().is_some() {
4494 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
4495 self.request_autoscroll(Autoscroll::Fit, cx);
4496 cx.notify();
4497 }
4498 }
4499
4500 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
4501 if !ranges.is_empty() {
4502 self.display_map
4503 .update(cx, |map, cx| map.unfold(ranges, cx));
4504 self.request_autoscroll(Autoscroll::Fit, cx);
4505 cx.notify();
4506 }
4507 }
4508
4509 pub fn insert_blocks(
4510 &mut self,
4511 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
4512 cx: &mut ViewContext<Self>,
4513 ) -> Vec<BlockId> {
4514 let blocks = self
4515 .display_map
4516 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
4517 self.request_autoscroll(Autoscroll::Fit, cx);
4518 blocks
4519 }
4520
4521 pub fn replace_blocks(
4522 &mut self,
4523 blocks: HashMap<BlockId, RenderBlock>,
4524 cx: &mut ViewContext<Self>,
4525 ) {
4526 self.display_map
4527 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
4528 self.request_autoscroll(Autoscroll::Fit, cx);
4529 }
4530
4531 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
4532 self.display_map.update(cx, |display_map, cx| {
4533 display_map.remove_blocks(block_ids, cx)
4534 });
4535 }
4536
4537 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
4538 self.display_map
4539 .update(cx, |map, cx| map.snapshot(cx))
4540 .longest_row()
4541 }
4542
4543 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
4544 self.display_map
4545 .update(cx, |map, cx| map.snapshot(cx))
4546 .max_point()
4547 }
4548
4549 pub fn text(&self, cx: &AppContext) -> String {
4550 self.buffer.read(cx).read(cx).text()
4551 }
4552
4553 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
4554 self.display_map
4555 .update(cx, |map, cx| map.snapshot(cx))
4556 .text()
4557 }
4558
4559 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
4560 self.display_map
4561 .update(cx, |map, cx| map.set_wrap_width(width, cx))
4562 }
4563
4564 pub fn set_highlighted_rows(&mut self, rows: Option<Range<u32>>) {
4565 self.highlighted_rows = rows;
4566 }
4567
4568 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
4569 self.highlighted_rows.clone()
4570 }
4571
4572 pub fn highlight_ranges<T: 'static>(
4573 &mut self,
4574 ranges: Vec<Range<Anchor>>,
4575 color: Color,
4576 cx: &mut ViewContext<Self>,
4577 ) {
4578 self.highlighted_ranges
4579 .insert(TypeId::of::<T>(), (color, ranges));
4580 cx.notify();
4581 }
4582
4583 pub fn clear_highlighted_ranges<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
4584 self.highlighted_ranges.remove(&TypeId::of::<T>());
4585 cx.notify();
4586 }
4587
4588 #[cfg(feature = "test-support")]
4589 pub fn all_highlighted_ranges(
4590 &mut self,
4591 cx: &mut ViewContext<Self>,
4592 ) -> Vec<(Range<DisplayPoint>, Color)> {
4593 let snapshot = self.snapshot(cx);
4594 let buffer = &snapshot.buffer_snapshot;
4595 let start = buffer.anchor_before(0);
4596 let end = buffer.anchor_after(buffer.len());
4597 self.highlighted_ranges_in_range(start..end, &snapshot)
4598 }
4599
4600 pub fn highlighted_ranges_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
4601 self.highlighted_ranges
4602 .get(&TypeId::of::<T>())
4603 .map(|(color, ranges)| (*color, ranges.as_slice()))
4604 }
4605
4606 pub fn highlighted_ranges_in_range(
4607 &self,
4608 search_range: Range<Anchor>,
4609 display_snapshot: &DisplaySnapshot,
4610 ) -> Vec<(Range<DisplayPoint>, Color)> {
4611 let mut results = Vec::new();
4612 let buffer = &display_snapshot.buffer_snapshot;
4613 for (color, ranges) in self.highlighted_ranges.values() {
4614 let start_ix = match ranges.binary_search_by(|probe| {
4615 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
4616 if cmp.is_gt() {
4617 Ordering::Greater
4618 } else {
4619 Ordering::Less
4620 }
4621 }) {
4622 Ok(i) | Err(i) => i,
4623 };
4624 for range in &ranges[start_ix..] {
4625 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
4626 break;
4627 }
4628 let start = range
4629 .start
4630 .to_point(buffer)
4631 .to_display_point(display_snapshot);
4632 let end = range
4633 .end
4634 .to_point(buffer)
4635 .to_display_point(display_snapshot);
4636 results.push((start..end, *color))
4637 }
4638 }
4639 results
4640 }
4641
4642 fn next_blink_epoch(&mut self) -> usize {
4643 self.blink_epoch += 1;
4644 self.blink_epoch
4645 }
4646
4647 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
4648 if !self.focused {
4649 return;
4650 }
4651
4652 self.show_local_cursors = true;
4653 cx.notify();
4654
4655 let epoch = self.next_blink_epoch();
4656 cx.spawn(|this, mut cx| {
4657 let this = this.downgrade();
4658 async move {
4659 Timer::after(CURSOR_BLINK_INTERVAL).await;
4660 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4661 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
4662 }
4663 }
4664 })
4665 .detach();
4666 }
4667
4668 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4669 if epoch == self.blink_epoch {
4670 self.blinking_paused = false;
4671 self.blink_cursors(epoch, cx);
4672 }
4673 }
4674
4675 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
4676 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
4677 self.show_local_cursors = !self.show_local_cursors;
4678 cx.notify();
4679
4680 let epoch = self.next_blink_epoch();
4681 cx.spawn(|this, mut cx| {
4682 let this = this.downgrade();
4683 async move {
4684 Timer::after(CURSOR_BLINK_INTERVAL).await;
4685 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
4686 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
4687 }
4688 }
4689 })
4690 .detach();
4691 }
4692 }
4693
4694 pub fn show_local_cursors(&self) -> bool {
4695 self.show_local_cursors
4696 }
4697
4698 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
4699 self.refresh_active_diagnostics(cx);
4700 cx.notify();
4701 }
4702
4703 fn on_buffer_event(
4704 &mut self,
4705 _: ModelHandle<MultiBuffer>,
4706 event: &language::Event,
4707 cx: &mut ViewContext<Self>,
4708 ) {
4709 match event {
4710 language::Event::Edited => cx.emit(Event::Edited),
4711 language::Event::Dirtied => cx.emit(Event::Dirtied),
4712 language::Event::Saved => cx.emit(Event::Saved),
4713 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
4714 language::Event::Reloaded => cx.emit(Event::TitleChanged),
4715 language::Event::Closed => cx.emit(Event::Closed),
4716 _ => {}
4717 }
4718 }
4719
4720 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
4721 cx.notify();
4722 }
4723}
4724
4725impl EditorSnapshot {
4726 pub fn is_focused(&self) -> bool {
4727 self.is_focused
4728 }
4729
4730 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
4731 self.placeholder_text.as_ref()
4732 }
4733
4734 pub fn scroll_position(&self) -> Vector2F {
4735 compute_scroll_position(
4736 &self.display_snapshot,
4737 self.scroll_position,
4738 &self.scroll_top_anchor,
4739 )
4740 }
4741}
4742
4743impl Deref for EditorSnapshot {
4744 type Target = DisplaySnapshot;
4745
4746 fn deref(&self) -> &Self::Target {
4747 &self.display_snapshot
4748 }
4749}
4750
4751impl EditorSettings {
4752 #[cfg(any(test, feature = "test-support"))]
4753 pub fn test(cx: &AppContext) -> Self {
4754 use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader};
4755
4756 Self {
4757 tab_size: 4,
4758 soft_wrap: SoftWrap::None,
4759 style: {
4760 let font_cache: &gpui::FontCache = cx.font_cache();
4761 let font_family_name = Arc::from("Monaco");
4762 let font_properties = Default::default();
4763 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
4764 let font_id = font_cache
4765 .select_font(font_family_id, &font_properties)
4766 .unwrap();
4767 let text = gpui::fonts::TextStyle {
4768 font_family_name,
4769 font_family_id,
4770 font_id,
4771 font_size: 14.,
4772 color: gpui::color::Color::from_u32(0xff0000ff),
4773 font_properties,
4774 underline: None,
4775 };
4776 let default_diagnostic_style = DiagnosticStyle {
4777 message: text.clone().into(),
4778 header: Default::default(),
4779 text_scale_factor: 1.,
4780 };
4781 EditorStyle {
4782 text: text.clone(),
4783 placeholder_text: None,
4784 background: Default::default(),
4785 gutter_background: Default::default(),
4786 gutter_padding_factor: 2.,
4787 active_line_background: Default::default(),
4788 highlighted_line_background: Default::default(),
4789 line_number: Default::default(),
4790 line_number_active: Default::default(),
4791 selection: Default::default(),
4792 guest_selections: Default::default(),
4793 syntax: Default::default(),
4794 diagnostic_path_header: DiagnosticPathHeader {
4795 container: Default::default(),
4796 filename: ContainedText {
4797 container: Default::default(),
4798 text: text.clone(),
4799 },
4800 path: ContainedText {
4801 container: Default::default(),
4802 text: text.clone(),
4803 },
4804 text_scale_factor: 1.,
4805 },
4806 diagnostic_header: DiagnosticHeader {
4807 container: Default::default(),
4808 message: ContainedLabel {
4809 container: Default::default(),
4810 label: text.clone().into(),
4811 },
4812 code: ContainedText {
4813 container: Default::default(),
4814 text: text.clone(),
4815 },
4816 icon_width_factor: 1.,
4817 text_scale_factor: 1.,
4818 },
4819 error_diagnostic: default_diagnostic_style.clone(),
4820 invalid_error_diagnostic: default_diagnostic_style.clone(),
4821 warning_diagnostic: default_diagnostic_style.clone(),
4822 invalid_warning_diagnostic: default_diagnostic_style.clone(),
4823 information_diagnostic: default_diagnostic_style.clone(),
4824 invalid_information_diagnostic: default_diagnostic_style.clone(),
4825 hint_diagnostic: default_diagnostic_style.clone(),
4826 invalid_hint_diagnostic: default_diagnostic_style.clone(),
4827 autocomplete: Default::default(),
4828 }
4829 },
4830 }
4831 }
4832}
4833
4834fn compute_scroll_position(
4835 snapshot: &DisplaySnapshot,
4836 mut scroll_position: Vector2F,
4837 scroll_top_anchor: &Option<Anchor>,
4838) -> Vector2F {
4839 if let Some(anchor) = scroll_top_anchor {
4840 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
4841 scroll_position.set_y(scroll_top + scroll_position.y());
4842 } else {
4843 scroll_position.set_y(0.);
4844 }
4845 scroll_position
4846}
4847
4848#[derive(Copy, Clone)]
4849pub enum Event {
4850 Activate,
4851 Edited,
4852 Blurred,
4853 Dirtied,
4854 Saved,
4855 TitleChanged,
4856 SelectionsChanged,
4857 Closed,
4858}
4859
4860impl Entity for Editor {
4861 type Event = Event;
4862}
4863
4864impl View for Editor {
4865 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
4866 let settings = (self.build_settings)(cx);
4867 self.display_map.update(cx, |map, cx| {
4868 map.set_font(
4869 settings.style.text.font_id,
4870 settings.style.text.font_size,
4871 cx,
4872 )
4873 });
4874 EditorElement::new(self.handle.clone(), settings).boxed()
4875 }
4876
4877 fn ui_name() -> &'static str {
4878 "Editor"
4879 }
4880
4881 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
4882 self.focused = true;
4883 self.blink_cursors(self.blink_epoch, cx);
4884 self.buffer.update(cx, |buffer, cx| {
4885 buffer.finalize_last_transaction(cx);
4886 buffer.set_active_selections(&self.selections, cx)
4887 });
4888 }
4889
4890 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
4891 self.focused = false;
4892 self.show_local_cursors = false;
4893 self.buffer
4894 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
4895 self.hide_context_menu(cx);
4896 cx.emit(Event::Blurred);
4897 cx.notify();
4898 }
4899
4900 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
4901 let mut cx = Self::default_keymap_context();
4902 let mode = match self.mode {
4903 EditorMode::SingleLine => "single_line",
4904 EditorMode::AutoHeight { .. } => "auto_height",
4905 EditorMode::Full => "full",
4906 };
4907 cx.map.insert("mode".into(), mode.into());
4908 match self.context_menu.as_ref() {
4909 Some(ContextMenu::Completions(_)) => {
4910 cx.set.insert("showing_completions".into());
4911 }
4912 Some(ContextMenu::CodeActions(_)) => {
4913 cx.set.insert("showing_code_actions".into());
4914 }
4915 None => {}
4916 }
4917 cx
4918 }
4919}
4920
4921impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
4922 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
4923 let start = self.start.to_point(buffer);
4924 let end = self.end.to_point(buffer);
4925 if self.reversed {
4926 end..start
4927 } else {
4928 start..end
4929 }
4930 }
4931
4932 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
4933 let start = self.start.to_offset(buffer);
4934 let end = self.end.to_offset(buffer);
4935 if self.reversed {
4936 end..start
4937 } else {
4938 start..end
4939 }
4940 }
4941
4942 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
4943 let start = self
4944 .start
4945 .to_point(&map.buffer_snapshot)
4946 .to_display_point(map);
4947 let end = self
4948 .end
4949 .to_point(&map.buffer_snapshot)
4950 .to_display_point(map);
4951 if self.reversed {
4952 end..start
4953 } else {
4954 start..end
4955 }
4956 }
4957
4958 fn spanned_rows(
4959 &self,
4960 include_end_if_at_line_start: bool,
4961 map: &DisplaySnapshot,
4962 ) -> Range<u32> {
4963 let start = self.start.to_point(&map.buffer_snapshot);
4964 let mut end = self.end.to_point(&map.buffer_snapshot);
4965 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
4966 end.row -= 1;
4967 }
4968
4969 let buffer_start = map.prev_line_boundary(start).0;
4970 let buffer_end = map.next_line_boundary(end).0;
4971 buffer_start.row..buffer_end.row + 1
4972 }
4973}
4974
4975impl<T: InvalidationRegion> InvalidationStack<T> {
4976 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
4977 where
4978 S: Clone + ToOffset,
4979 {
4980 while let Some(region) = self.last() {
4981 let all_selections_inside_invalidation_ranges =
4982 if selections.len() == region.ranges().len() {
4983 selections
4984 .iter()
4985 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
4986 .all(|(selection, invalidation_range)| {
4987 let head = selection.head().to_offset(&buffer);
4988 invalidation_range.start <= head && invalidation_range.end >= head
4989 })
4990 } else {
4991 false
4992 };
4993
4994 if all_selections_inside_invalidation_ranges {
4995 break;
4996 } else {
4997 self.pop();
4998 }
4999 }
5000 }
5001}
5002
5003impl<T> Default for InvalidationStack<T> {
5004 fn default() -> Self {
5005 Self(Default::default())
5006 }
5007}
5008
5009impl<T> Deref for InvalidationStack<T> {
5010 type Target = Vec<T>;
5011
5012 fn deref(&self) -> &Self::Target {
5013 &self.0
5014 }
5015}
5016
5017impl<T> DerefMut for InvalidationStack<T> {
5018 fn deref_mut(&mut self) -> &mut Self::Target {
5019 &mut self.0
5020 }
5021}
5022
5023impl InvalidationRegion for BracketPairState {
5024 fn ranges(&self) -> &[Range<Anchor>] {
5025 &self.ranges
5026 }
5027}
5028
5029impl InvalidationRegion for SnippetState {
5030 fn ranges(&self) -> &[Range<Anchor>] {
5031 &self.ranges[self.active_index]
5032 }
5033}
5034
5035pub fn diagnostic_block_renderer(
5036 diagnostic: Diagnostic,
5037 is_valid: bool,
5038 build_settings: BuildSettings,
5039) -> RenderBlock {
5040 let mut highlighted_lines = Vec::new();
5041 for line in diagnostic.message.lines() {
5042 highlighted_lines.push(highlight_diagnostic_message(line));
5043 }
5044
5045 Arc::new(move |cx: &BlockContext| {
5046 let settings = build_settings(cx);
5047 let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
5048 let font_size = (style.text_scale_factor * settings.style.text.font_size).round();
5049 Flex::column()
5050 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5051 Label::new(
5052 line.clone(),
5053 style.message.clone().with_font_size(font_size),
5054 )
5055 .with_highlights(highlights.clone())
5056 .contained()
5057 .with_margin_left(cx.anchor_x)
5058 .boxed()
5059 }))
5060 .aligned()
5061 .left()
5062 .boxed()
5063 })
5064}
5065
5066pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5067 let mut message_without_backticks = String::new();
5068 let mut prev_offset = 0;
5069 let mut inside_block = false;
5070 let mut highlights = Vec::new();
5071 for (match_ix, (offset, _)) in message
5072 .match_indices('`')
5073 .chain([(message.len(), "")])
5074 .enumerate()
5075 {
5076 message_without_backticks.push_str(&message[prev_offset..offset]);
5077 if inside_block {
5078 highlights.extend(prev_offset - match_ix..offset - match_ix);
5079 }
5080
5081 inside_block = !inside_block;
5082 prev_offset = offset + 1;
5083 }
5084
5085 (message_without_backticks, highlights)
5086}
5087
5088pub fn diagnostic_style(
5089 severity: DiagnosticSeverity,
5090 valid: bool,
5091 style: &EditorStyle,
5092) -> DiagnosticStyle {
5093 match (severity, valid) {
5094 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(),
5095 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(),
5096 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(),
5097 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(),
5098 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(),
5099 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(),
5100 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(),
5101 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(),
5102 _ => DiagnosticStyle {
5103 message: style.text.clone().into(),
5104 header: Default::default(),
5105 text_scale_factor: 1.,
5106 },
5107 }
5108}
5109
5110pub fn settings_builder(
5111 buffer: WeakModelHandle<MultiBuffer>,
5112 settings: watch::Receiver<workspace::Settings>,
5113) -> BuildSettings {
5114 Arc::new(move |cx| {
5115 let settings = settings.borrow();
5116 let font_cache = cx.font_cache();
5117 let font_family_id = settings.buffer_font_family;
5118 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5119 let font_properties = Default::default();
5120 let font_id = font_cache
5121 .select_font(font_family_id, &font_properties)
5122 .unwrap();
5123 let font_size = settings.buffer_font_size;
5124
5125 let mut theme = settings.theme.editor.clone();
5126 theme.text = TextStyle {
5127 color: theme.text.color,
5128 font_family_name,
5129 font_family_id,
5130 font_id,
5131 font_size,
5132 font_properties,
5133 underline: None,
5134 };
5135 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
5136 let soft_wrap = match settings.soft_wrap(language) {
5137 workspace::settings::SoftWrap::None => SoftWrap::None,
5138 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5139 workspace::settings::SoftWrap::PreferredLineLength => {
5140 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
5141 }
5142 };
5143
5144 EditorSettings {
5145 tab_size: settings.tab_size,
5146 soft_wrap,
5147 style: theme,
5148 }
5149 })
5150}
5151
5152pub fn combine_syntax_and_fuzzy_match_highlights(
5153 text: &str,
5154 default_style: HighlightStyle,
5155 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5156 match_indices: &[usize],
5157) -> Vec<(Range<usize>, HighlightStyle)> {
5158 let mut result = Vec::new();
5159 let mut match_indices = match_indices.iter().copied().peekable();
5160
5161 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5162 {
5163 syntax_highlight.font_properties.weight(Default::default());
5164
5165 // Add highlights for any fuzzy match characters before the next
5166 // syntax highlight range.
5167 while let Some(&match_index) = match_indices.peek() {
5168 if match_index >= range.start {
5169 break;
5170 }
5171 match_indices.next();
5172 let end_index = char_ix_after(match_index, text);
5173 let mut match_style = default_style;
5174 match_style.font_properties.weight(fonts::Weight::BOLD);
5175 result.push((match_index..end_index, match_style));
5176 }
5177
5178 if range.start == usize::MAX {
5179 break;
5180 }
5181
5182 // Add highlights for any fuzzy match characters within the
5183 // syntax highlight range.
5184 let mut offset = range.start;
5185 while let Some(&match_index) = match_indices.peek() {
5186 if match_index >= range.end {
5187 break;
5188 }
5189
5190 match_indices.next();
5191 if match_index > offset {
5192 result.push((offset..match_index, syntax_highlight));
5193 }
5194
5195 let mut end_index = char_ix_after(match_index, text);
5196 while let Some(&next_match_index) = match_indices.peek() {
5197 if next_match_index == end_index && next_match_index < range.end {
5198 end_index = char_ix_after(next_match_index, text);
5199 match_indices.next();
5200 } else {
5201 break;
5202 }
5203 }
5204
5205 let mut match_style = syntax_highlight;
5206 match_style.font_properties.weight(fonts::Weight::BOLD);
5207 result.push((match_index..end_index, match_style));
5208 offset = end_index;
5209 }
5210
5211 if offset < range.end {
5212 result.push((offset..range.end, syntax_highlight));
5213 }
5214 }
5215
5216 fn char_ix_after(ix: usize, text: &str) -> usize {
5217 ix + text[ix..].chars().next().unwrap().len_utf8()
5218 }
5219
5220 result
5221}
5222
5223fn styled_runs_for_completion_label<'a>(
5224 label: &'a CompletionLabel,
5225 default_color: Color,
5226 syntax_theme: &'a theme::SyntaxTheme,
5227) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
5228 const MUTED_OPACITY: usize = 165;
5229
5230 let mut muted_default_style = HighlightStyle {
5231 color: default_color,
5232 ..Default::default()
5233 };
5234 muted_default_style.color.a = ((default_color.a as usize * MUTED_OPACITY) / 255) as u8;
5235
5236 let mut prev_end = label.filter_range.end;
5237 label
5238 .runs
5239 .iter()
5240 .enumerate()
5241 .flat_map(move |(ix, (range, highlight_id))| {
5242 let style = if let Some(style) = highlight_id.style(syntax_theme) {
5243 style
5244 } else {
5245 return Default::default();
5246 };
5247 let mut muted_style = style.clone();
5248 muted_style.color.a = ((style.color.a as usize * MUTED_OPACITY) / 255) as u8;
5249
5250 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
5251 if range.start >= label.filter_range.end {
5252 if range.start > prev_end {
5253 runs.push((prev_end..range.start, muted_default_style));
5254 }
5255 runs.push((range.clone(), muted_style));
5256 } else if range.end <= label.filter_range.end {
5257 runs.push((range.clone(), style));
5258 } else {
5259 runs.push((range.start..label.filter_range.end, style));
5260 runs.push((label.filter_range.end..range.end, muted_style));
5261 }
5262 prev_end = cmp::max(prev_end, range.end);
5263
5264 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
5265 runs.push((prev_end..label.text.len(), muted_default_style));
5266 }
5267
5268 runs
5269 })
5270}
5271
5272#[cfg(test)]
5273mod tests {
5274 use super::*;
5275 use language::{FakeFile, LanguageConfig};
5276 use lsp::FakeLanguageServer;
5277 use std::{cell::RefCell, path::Path, rc::Rc, time::Instant};
5278 use text::Point;
5279 use unindent::Unindent;
5280 use util::test::sample_text;
5281
5282 #[gpui::test]
5283 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
5284 let mut now = Instant::now();
5285 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
5286 let group_interval = buffer.read(cx).transaction_group_interval();
5287 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5288 let settings = EditorSettings::test(cx);
5289 let (_, editor) = cx.add_window(Default::default(), |cx| {
5290 build_editor(buffer.clone(), settings, cx)
5291 });
5292
5293 editor.update(cx, |editor, cx| {
5294 editor.start_transaction_at(now, cx);
5295 editor.select_ranges([2..4], None, cx);
5296 editor.insert("cd", cx);
5297 editor.end_transaction_at(now, cx);
5298 assert_eq!(editor.text(cx), "12cd56");
5299 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
5300
5301 editor.start_transaction_at(now, cx);
5302 editor.select_ranges([4..5], None, cx);
5303 editor.insert("e", cx);
5304 editor.end_transaction_at(now, cx);
5305 assert_eq!(editor.text(cx), "12cde6");
5306 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5307
5308 now += group_interval + Duration::from_millis(1);
5309 editor.select_ranges([2..2], None, cx);
5310
5311 // Simulate an edit in another editor
5312 buffer.update(cx, |buffer, cx| {
5313 buffer.start_transaction_at(now, cx);
5314 buffer.edit([0..1], "a", cx);
5315 buffer.edit([1..1], "b", cx);
5316 buffer.end_transaction_at(now, cx);
5317 });
5318
5319 assert_eq!(editor.text(cx), "ab2cde6");
5320 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
5321
5322 // Last transaction happened past the group interval in a different editor.
5323 // Undo it individually and don't restore selections.
5324 editor.undo(&Undo, cx);
5325 assert_eq!(editor.text(cx), "12cde6");
5326 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
5327
5328 // First two transactions happened within the group interval in this editor.
5329 // Undo them together and restore selections.
5330 editor.undo(&Undo, cx);
5331 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
5332 assert_eq!(editor.text(cx), "123456");
5333 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
5334
5335 // Redo the first two transactions together.
5336 editor.redo(&Redo, cx);
5337 assert_eq!(editor.text(cx), "12cde6");
5338 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
5339
5340 // Redo the last transaction on its own.
5341 editor.redo(&Redo, cx);
5342 assert_eq!(editor.text(cx), "ab2cde6");
5343 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
5344
5345 // Test empty transactions.
5346 editor.start_transaction_at(now, cx);
5347 editor.end_transaction_at(now, cx);
5348 editor.undo(&Undo, cx);
5349 assert_eq!(editor.text(cx), "12cde6");
5350 });
5351 }
5352
5353 #[gpui::test]
5354 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
5355 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5356 let settings = EditorSettings::test(cx);
5357 let (_, editor) =
5358 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5359
5360 editor.update(cx, |view, cx| {
5361 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5362 });
5363
5364 assert_eq!(
5365 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5366 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5367 );
5368
5369 editor.update(cx, |view, cx| {
5370 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5371 });
5372
5373 assert_eq!(
5374 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5375 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5376 );
5377
5378 editor.update(cx, |view, cx| {
5379 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5380 });
5381
5382 assert_eq!(
5383 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5384 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5385 );
5386
5387 editor.update(cx, |view, cx| {
5388 view.end_selection(cx);
5389 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5390 });
5391
5392 assert_eq!(
5393 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5394 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
5395 );
5396
5397 editor.update(cx, |view, cx| {
5398 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
5399 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
5400 });
5401
5402 assert_eq!(
5403 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5404 [
5405 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
5406 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
5407 ]
5408 );
5409
5410 editor.update(cx, |view, cx| {
5411 view.end_selection(cx);
5412 });
5413
5414 assert_eq!(
5415 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
5416 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
5417 );
5418 }
5419
5420 #[gpui::test]
5421 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
5422 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5423 let settings = EditorSettings::test(cx);
5424 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5425
5426 view.update(cx, |view, cx| {
5427 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
5428 assert_eq!(
5429 view.selected_display_ranges(cx),
5430 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
5431 );
5432 });
5433
5434 view.update(cx, |view, cx| {
5435 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
5436 assert_eq!(
5437 view.selected_display_ranges(cx),
5438 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5439 );
5440 });
5441
5442 view.update(cx, |view, cx| {
5443 view.cancel(&Cancel, cx);
5444 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5445 assert_eq!(
5446 view.selected_display_ranges(cx),
5447 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
5448 );
5449 });
5450 }
5451
5452 #[gpui::test]
5453 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
5454 cx.add_window(Default::default(), |cx| {
5455 use workspace::ItemView;
5456 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
5457 let settings = EditorSettings::test(&cx);
5458 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
5459 let mut editor = build_editor(buffer.clone(), settings, cx);
5460 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
5461
5462 // Move the cursor a small distance.
5463 // Nothing is added to the navigation history.
5464 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
5465 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
5466 assert!(nav_history.borrow_mut().pop_backward().is_none());
5467
5468 // Move the cursor a large distance.
5469 // The history can jump back to the previous position.
5470 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
5471 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5472 editor.navigate(nav_entry.data.unwrap(), cx);
5473 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5474 assert_eq!(
5475 editor.selected_display_ranges(cx),
5476 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
5477 );
5478
5479 // Move the cursor a small distance via the mouse.
5480 // Nothing is added to the navigation history.
5481 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
5482 editor.end_selection(cx);
5483 assert_eq!(
5484 editor.selected_display_ranges(cx),
5485 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5486 );
5487 assert!(nav_history.borrow_mut().pop_backward().is_none());
5488
5489 // Move the cursor a large distance via the mouse.
5490 // The history can jump back to the previous position.
5491 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
5492 editor.end_selection(cx);
5493 assert_eq!(
5494 editor.selected_display_ranges(cx),
5495 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
5496 );
5497 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
5498 editor.navigate(nav_entry.data.unwrap(), cx);
5499 assert_eq!(nav_entry.item_view.id(), cx.view_id());
5500 assert_eq!(
5501 editor.selected_display_ranges(cx),
5502 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
5503 );
5504
5505 editor
5506 });
5507 }
5508
5509 #[gpui::test]
5510 fn test_cancel(cx: &mut gpui::MutableAppContext) {
5511 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
5512 let settings = EditorSettings::test(cx);
5513 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5514
5515 view.update(cx, |view, cx| {
5516 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
5517 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
5518 view.end_selection(cx);
5519
5520 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
5521 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
5522 view.end_selection(cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 [
5526 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5527 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
5528 ]
5529 );
5530 });
5531
5532 view.update(cx, |view, cx| {
5533 view.cancel(&Cancel, cx);
5534 assert_eq!(
5535 view.selected_display_ranges(cx),
5536 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
5537 );
5538 });
5539
5540 view.update(cx, |view, cx| {
5541 view.cancel(&Cancel, cx);
5542 assert_eq!(
5543 view.selected_display_ranges(cx),
5544 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
5545 );
5546 });
5547 }
5548
5549 #[gpui::test]
5550 fn test_fold(cx: &mut gpui::MutableAppContext) {
5551 let buffer = MultiBuffer::build_simple(
5552 &"
5553 impl Foo {
5554 // Hello!
5555
5556 fn a() {
5557 1
5558 }
5559
5560 fn b() {
5561 2
5562 }
5563
5564 fn c() {
5565 3
5566 }
5567 }
5568 "
5569 .unindent(),
5570 cx,
5571 );
5572 let settings = EditorSettings::test(&cx);
5573 let (_, view) = cx.add_window(Default::default(), |cx| {
5574 build_editor(buffer.clone(), settings, cx)
5575 });
5576
5577 view.update(cx, |view, cx| {
5578 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
5579 view.fold(&Fold, cx);
5580 assert_eq!(
5581 view.display_text(cx),
5582 "
5583 impl Foo {
5584 // Hello!
5585
5586 fn a() {
5587 1
5588 }
5589
5590 fn b() {…
5591 }
5592
5593 fn c() {…
5594 }
5595 }
5596 "
5597 .unindent(),
5598 );
5599
5600 view.fold(&Fold, cx);
5601 assert_eq!(
5602 view.display_text(cx),
5603 "
5604 impl Foo {…
5605 }
5606 "
5607 .unindent(),
5608 );
5609
5610 view.unfold(&Unfold, cx);
5611 assert_eq!(
5612 view.display_text(cx),
5613 "
5614 impl Foo {
5615 // Hello!
5616
5617 fn a() {
5618 1
5619 }
5620
5621 fn b() {…
5622 }
5623
5624 fn c() {…
5625 }
5626 }
5627 "
5628 .unindent(),
5629 );
5630
5631 view.unfold(&Unfold, cx);
5632 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
5633 });
5634 }
5635
5636 #[gpui::test]
5637 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
5638 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5639 let settings = EditorSettings::test(&cx);
5640 let (_, view) = cx.add_window(Default::default(), |cx| {
5641 build_editor(buffer.clone(), settings, cx)
5642 });
5643
5644 buffer.update(cx, |buffer, cx| {
5645 buffer.edit(
5646 vec![
5647 Point::new(1, 0)..Point::new(1, 0),
5648 Point::new(1, 1)..Point::new(1, 1),
5649 ],
5650 "\t",
5651 cx,
5652 );
5653 });
5654
5655 view.update(cx, |view, cx| {
5656 assert_eq!(
5657 view.selected_display_ranges(cx),
5658 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5659 );
5660
5661 view.move_down(&MoveDown, cx);
5662 assert_eq!(
5663 view.selected_display_ranges(cx),
5664 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5665 );
5666
5667 view.move_right(&MoveRight, cx);
5668 assert_eq!(
5669 view.selected_display_ranges(cx),
5670 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
5671 );
5672
5673 view.move_left(&MoveLeft, cx);
5674 assert_eq!(
5675 view.selected_display_ranges(cx),
5676 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
5677 );
5678
5679 view.move_up(&MoveUp, cx);
5680 assert_eq!(
5681 view.selected_display_ranges(cx),
5682 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5683 );
5684
5685 view.move_to_end(&MoveToEnd, cx);
5686 assert_eq!(
5687 view.selected_display_ranges(cx),
5688 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
5689 );
5690
5691 view.move_to_beginning(&MoveToBeginning, cx);
5692 assert_eq!(
5693 view.selected_display_ranges(cx),
5694 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
5695 );
5696
5697 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
5698 view.select_to_beginning(&SelectToBeginning, cx);
5699 assert_eq!(
5700 view.selected_display_ranges(cx),
5701 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
5702 );
5703
5704 view.select_to_end(&SelectToEnd, cx);
5705 assert_eq!(
5706 view.selected_display_ranges(cx),
5707 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
5708 );
5709 });
5710 }
5711
5712 #[gpui::test]
5713 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
5714 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
5715 let settings = EditorSettings::test(&cx);
5716 let (_, view) = cx.add_window(Default::default(), |cx| {
5717 build_editor(buffer.clone(), settings, cx)
5718 });
5719
5720 assert_eq!('ⓐ'.len_utf8(), 3);
5721 assert_eq!('α'.len_utf8(), 2);
5722
5723 view.update(cx, |view, cx| {
5724 view.fold_ranges(
5725 vec![
5726 Point::new(0, 6)..Point::new(0, 12),
5727 Point::new(1, 2)..Point::new(1, 4),
5728 Point::new(2, 4)..Point::new(2, 8),
5729 ],
5730 cx,
5731 );
5732 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
5733
5734 view.move_right(&MoveRight, cx);
5735 assert_eq!(
5736 view.selected_display_ranges(cx),
5737 &[empty_range(0, "ⓐ".len())]
5738 );
5739 view.move_right(&MoveRight, cx);
5740 assert_eq!(
5741 view.selected_display_ranges(cx),
5742 &[empty_range(0, "ⓐⓑ".len())]
5743 );
5744 view.move_right(&MoveRight, cx);
5745 assert_eq!(
5746 view.selected_display_ranges(cx),
5747 &[empty_range(0, "ⓐⓑ…".len())]
5748 );
5749
5750 view.move_down(&MoveDown, cx);
5751 assert_eq!(
5752 view.selected_display_ranges(cx),
5753 &[empty_range(1, "ab…".len())]
5754 );
5755 view.move_left(&MoveLeft, cx);
5756 assert_eq!(
5757 view.selected_display_ranges(cx),
5758 &[empty_range(1, "ab".len())]
5759 );
5760 view.move_left(&MoveLeft, cx);
5761 assert_eq!(
5762 view.selected_display_ranges(cx),
5763 &[empty_range(1, "a".len())]
5764 );
5765
5766 view.move_down(&MoveDown, cx);
5767 assert_eq!(
5768 view.selected_display_ranges(cx),
5769 &[empty_range(2, "α".len())]
5770 );
5771 view.move_right(&MoveRight, cx);
5772 assert_eq!(
5773 view.selected_display_ranges(cx),
5774 &[empty_range(2, "αβ".len())]
5775 );
5776 view.move_right(&MoveRight, cx);
5777 assert_eq!(
5778 view.selected_display_ranges(cx),
5779 &[empty_range(2, "αβ…".len())]
5780 );
5781 view.move_right(&MoveRight, cx);
5782 assert_eq!(
5783 view.selected_display_ranges(cx),
5784 &[empty_range(2, "αβ…ε".len())]
5785 );
5786
5787 view.move_up(&MoveUp, cx);
5788 assert_eq!(
5789 view.selected_display_ranges(cx),
5790 &[empty_range(1, "ab…e".len())]
5791 );
5792 view.move_up(&MoveUp, cx);
5793 assert_eq!(
5794 view.selected_display_ranges(cx),
5795 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
5796 );
5797 view.move_left(&MoveLeft, cx);
5798 assert_eq!(
5799 view.selected_display_ranges(cx),
5800 &[empty_range(0, "ⓐⓑ…".len())]
5801 );
5802 view.move_left(&MoveLeft, cx);
5803 assert_eq!(
5804 view.selected_display_ranges(cx),
5805 &[empty_range(0, "ⓐⓑ".len())]
5806 );
5807 view.move_left(&MoveLeft, cx);
5808 assert_eq!(
5809 view.selected_display_ranges(cx),
5810 &[empty_range(0, "ⓐ".len())]
5811 );
5812 });
5813 }
5814
5815 #[gpui::test]
5816 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
5817 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
5818 let settings = EditorSettings::test(&cx);
5819 let (_, view) = cx.add_window(Default::default(), |cx| {
5820 build_editor(buffer.clone(), settings, cx)
5821 });
5822 view.update(cx, |view, cx| {
5823 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
5824 view.move_down(&MoveDown, cx);
5825 assert_eq!(
5826 view.selected_display_ranges(cx),
5827 &[empty_range(1, "abcd".len())]
5828 );
5829
5830 view.move_down(&MoveDown, cx);
5831 assert_eq!(
5832 view.selected_display_ranges(cx),
5833 &[empty_range(2, "αβγ".len())]
5834 );
5835
5836 view.move_down(&MoveDown, cx);
5837 assert_eq!(
5838 view.selected_display_ranges(cx),
5839 &[empty_range(3, "abcd".len())]
5840 );
5841
5842 view.move_down(&MoveDown, cx);
5843 assert_eq!(
5844 view.selected_display_ranges(cx),
5845 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
5846 );
5847
5848 view.move_up(&MoveUp, cx);
5849 assert_eq!(
5850 view.selected_display_ranges(cx),
5851 &[empty_range(3, "abcd".len())]
5852 );
5853
5854 view.move_up(&MoveUp, cx);
5855 assert_eq!(
5856 view.selected_display_ranges(cx),
5857 &[empty_range(2, "αβγ".len())]
5858 );
5859 });
5860 }
5861
5862 #[gpui::test]
5863 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
5864 let buffer = MultiBuffer::build_simple("abc\n def", cx);
5865 let settings = EditorSettings::test(&cx);
5866 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5867 view.update(cx, |view, cx| {
5868 view.select_display_ranges(
5869 &[
5870 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5871 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5872 ],
5873 cx,
5874 );
5875 });
5876
5877 view.update(cx, |view, cx| {
5878 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5879 assert_eq!(
5880 view.selected_display_ranges(cx),
5881 &[
5882 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5883 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5884 ]
5885 );
5886 });
5887
5888 view.update(cx, |view, cx| {
5889 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5890 assert_eq!(
5891 view.selected_display_ranges(cx),
5892 &[
5893 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5894 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5895 ]
5896 );
5897 });
5898
5899 view.update(cx, |view, cx| {
5900 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
5901 assert_eq!(
5902 view.selected_display_ranges(cx),
5903 &[
5904 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5905 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5906 ]
5907 );
5908 });
5909
5910 view.update(cx, |view, cx| {
5911 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5912 assert_eq!(
5913 view.selected_display_ranges(cx),
5914 &[
5915 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5916 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5917 ]
5918 );
5919 });
5920
5921 // Moving to the end of line again is a no-op.
5922 view.update(cx, |view, cx| {
5923 view.move_to_end_of_line(&MoveToEndOfLine, cx);
5924 assert_eq!(
5925 view.selected_display_ranges(cx),
5926 &[
5927 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5928 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5929 ]
5930 );
5931 });
5932
5933 view.update(cx, |view, cx| {
5934 view.move_left(&MoveLeft, cx);
5935 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5936 assert_eq!(
5937 view.selected_display_ranges(cx),
5938 &[
5939 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5940 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5941 ]
5942 );
5943 });
5944
5945 view.update(cx, |view, cx| {
5946 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5947 assert_eq!(
5948 view.selected_display_ranges(cx),
5949 &[
5950 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5951 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
5952 ]
5953 );
5954 });
5955
5956 view.update(cx, |view, cx| {
5957 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
5958 assert_eq!(
5959 view.selected_display_ranges(cx),
5960 &[
5961 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
5962 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
5963 ]
5964 );
5965 });
5966
5967 view.update(cx, |view, cx| {
5968 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
5969 assert_eq!(
5970 view.selected_display_ranges(cx),
5971 &[
5972 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
5973 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
5974 ]
5975 );
5976 });
5977
5978 view.update(cx, |view, cx| {
5979 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
5980 assert_eq!(view.display_text(cx), "ab\n de");
5981 assert_eq!(
5982 view.selected_display_ranges(cx),
5983 &[
5984 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5985 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
5986 ]
5987 );
5988 });
5989
5990 view.update(cx, |view, cx| {
5991 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
5992 assert_eq!(view.display_text(cx), "\n");
5993 assert_eq!(
5994 view.selected_display_ranges(cx),
5995 &[
5996 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5997 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5998 ]
5999 );
6000 });
6001 }
6002
6003 #[gpui::test]
6004 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6005 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6006 let settings = EditorSettings::test(&cx);
6007 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6008 view.update(cx, |view, cx| {
6009 view.select_display_ranges(
6010 &[
6011 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6012 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6013 ],
6014 cx,
6015 );
6016 });
6017
6018 view.update(cx, |view, cx| {
6019 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6020 assert_eq!(
6021 view.selected_display_ranges(cx),
6022 &[
6023 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6024 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6025 ]
6026 );
6027 });
6028
6029 view.update(cx, |view, cx| {
6030 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6031 assert_eq!(
6032 view.selected_display_ranges(cx),
6033 &[
6034 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6035 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6036 ]
6037 );
6038 });
6039
6040 view.update(cx, |view, cx| {
6041 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6042 assert_eq!(
6043 view.selected_display_ranges(cx),
6044 &[
6045 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6046 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6047 ]
6048 );
6049 });
6050
6051 view.update(cx, |view, cx| {
6052 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6053 assert_eq!(
6054 view.selected_display_ranges(cx),
6055 &[
6056 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6057 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6058 ]
6059 );
6060 });
6061
6062 view.update(cx, |view, cx| {
6063 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6064 assert_eq!(
6065 view.selected_display_ranges(cx),
6066 &[
6067 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6068 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6069 ]
6070 );
6071 });
6072
6073 view.update(cx, |view, cx| {
6074 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6075 assert_eq!(
6076 view.selected_display_ranges(cx),
6077 &[
6078 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6079 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6080 ]
6081 );
6082 });
6083
6084 view.update(cx, |view, cx| {
6085 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6086 assert_eq!(
6087 view.selected_display_ranges(cx),
6088 &[
6089 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6090 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6091 ]
6092 );
6093 });
6094
6095 view.update(cx, |view, cx| {
6096 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6097 assert_eq!(
6098 view.selected_display_ranges(cx),
6099 &[
6100 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6101 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6102 ]
6103 );
6104 });
6105
6106 view.update(cx, |view, cx| {
6107 view.move_right(&MoveRight, cx);
6108 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6109 assert_eq!(
6110 view.selected_display_ranges(cx),
6111 &[
6112 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6113 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6114 ]
6115 );
6116 });
6117
6118 view.update(cx, |view, cx| {
6119 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6120 assert_eq!(
6121 view.selected_display_ranges(cx),
6122 &[
6123 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6124 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6125 ]
6126 );
6127 });
6128
6129 view.update(cx, |view, cx| {
6130 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6131 assert_eq!(
6132 view.selected_display_ranges(cx),
6133 &[
6134 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6135 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6136 ]
6137 );
6138 });
6139 }
6140
6141 #[gpui::test]
6142 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6143 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6144 let settings = EditorSettings::test(&cx);
6145 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6146
6147 view.update(cx, |view, cx| {
6148 view.set_wrap_width(Some(140.), cx);
6149 assert_eq!(
6150 view.display_text(cx),
6151 "use one::{\n two::three::\n four::five\n};"
6152 );
6153
6154 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6155
6156 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6157 assert_eq!(
6158 view.selected_display_ranges(cx),
6159 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6160 );
6161
6162 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6163 assert_eq!(
6164 view.selected_display_ranges(cx),
6165 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6166 );
6167
6168 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6169 assert_eq!(
6170 view.selected_display_ranges(cx),
6171 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6172 );
6173
6174 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6175 assert_eq!(
6176 view.selected_display_ranges(cx),
6177 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6178 );
6179
6180 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6181 assert_eq!(
6182 view.selected_display_ranges(cx),
6183 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6184 );
6185
6186 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6187 assert_eq!(
6188 view.selected_display_ranges(cx),
6189 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6190 );
6191 });
6192 }
6193
6194 #[gpui::test]
6195 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6196 let buffer = MultiBuffer::build_simple("one two three four", cx);
6197 let settings = EditorSettings::test(&cx);
6198 let (_, view) = cx.add_window(Default::default(), |cx| {
6199 build_editor(buffer.clone(), settings, cx)
6200 });
6201
6202 view.update(cx, |view, cx| {
6203 view.select_display_ranges(
6204 &[
6205 // an empty selection - the preceding word fragment is deleted
6206 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6207 // characters selected - they are deleted
6208 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6209 ],
6210 cx,
6211 );
6212 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6213 });
6214
6215 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6216
6217 view.update(cx, |view, cx| {
6218 view.select_display_ranges(
6219 &[
6220 // an empty selection - the following word fragment is deleted
6221 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6222 // characters selected - they are deleted
6223 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6224 ],
6225 cx,
6226 );
6227 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
6228 });
6229
6230 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6231 }
6232
6233 #[gpui::test]
6234 fn test_newline(cx: &mut gpui::MutableAppContext) {
6235 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6236 let settings = EditorSettings::test(&cx);
6237 let (_, view) = cx.add_window(Default::default(), |cx| {
6238 build_editor(buffer.clone(), settings, cx)
6239 });
6240
6241 view.update(cx, |view, cx| {
6242 view.select_display_ranges(
6243 &[
6244 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6245 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6246 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
6247 ],
6248 cx,
6249 );
6250
6251 view.newline(&Newline, cx);
6252 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
6253 });
6254 }
6255
6256 #[gpui::test]
6257 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
6258 let buffer = MultiBuffer::build_simple(
6259 "
6260 a
6261 b(
6262 X
6263 )
6264 c(
6265 X
6266 )
6267 "
6268 .unindent()
6269 .as_str(),
6270 cx,
6271 );
6272
6273 let settings = EditorSettings::test(&cx);
6274 let (_, editor) = cx.add_window(Default::default(), |cx| {
6275 let mut editor = build_editor(buffer.clone(), settings, cx);
6276 editor.select_ranges(
6277 [
6278 Point::new(2, 4)..Point::new(2, 5),
6279 Point::new(5, 4)..Point::new(5, 5),
6280 ],
6281 None,
6282 cx,
6283 );
6284 editor
6285 });
6286
6287 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6288 buffer.update(cx, |buffer, cx| {
6289 buffer.edit(
6290 [
6291 Point::new(1, 2)..Point::new(3, 0),
6292 Point::new(4, 2)..Point::new(6, 0),
6293 ],
6294 "",
6295 cx,
6296 );
6297 assert_eq!(
6298 buffer.read(cx).text(),
6299 "
6300 a
6301 b()
6302 c()
6303 "
6304 .unindent()
6305 );
6306 });
6307
6308 editor.update(cx, |editor, cx| {
6309 assert_eq!(
6310 editor.selected_ranges(cx),
6311 &[
6312 Point::new(1, 2)..Point::new(1, 2),
6313 Point::new(2, 2)..Point::new(2, 2),
6314 ],
6315 );
6316
6317 editor.newline(&Newline, cx);
6318 assert_eq!(
6319 editor.text(cx),
6320 "
6321 a
6322 b(
6323 )
6324 c(
6325 )
6326 "
6327 .unindent()
6328 );
6329
6330 // The selections are moved after the inserted newlines
6331 assert_eq!(
6332 editor.selected_ranges(cx),
6333 &[
6334 Point::new(2, 0)..Point::new(2, 0),
6335 Point::new(4, 0)..Point::new(4, 0),
6336 ],
6337 );
6338 });
6339 }
6340
6341 #[gpui::test]
6342 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
6343 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
6344
6345 let settings = EditorSettings::test(&cx);
6346 let (_, editor) = cx.add_window(Default::default(), |cx| {
6347 let mut editor = build_editor(buffer.clone(), settings, cx);
6348 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
6349 editor
6350 });
6351
6352 // Edit the buffer directly, deleting ranges surrounding the editor's selections
6353 buffer.update(cx, |buffer, cx| {
6354 buffer.edit([2..5, 10..13, 18..21], "", cx);
6355 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
6356 });
6357
6358 editor.update(cx, |editor, cx| {
6359 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
6360
6361 editor.insert("Z", cx);
6362 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
6363
6364 // The selections are moved after the inserted characters
6365 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
6366 });
6367 }
6368
6369 #[gpui::test]
6370 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
6371 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
6372 let settings = EditorSettings::test(&cx);
6373 let (_, view) = cx.add_window(Default::default(), |cx| {
6374 build_editor(buffer.clone(), settings, cx)
6375 });
6376
6377 view.update(cx, |view, cx| {
6378 // two selections on the same line
6379 view.select_display_ranges(
6380 &[
6381 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
6382 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
6383 ],
6384 cx,
6385 );
6386
6387 // indent from mid-tabstop to full tabstop
6388 view.tab(&Tab, cx);
6389 assert_eq!(view.text(cx), " one two\nthree\n four");
6390 assert_eq!(
6391 view.selected_display_ranges(cx),
6392 &[
6393 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6394 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
6395 ]
6396 );
6397
6398 // outdent from 1 tabstop to 0 tabstops
6399 view.outdent(&Outdent, cx);
6400 assert_eq!(view.text(cx), "one two\nthree\n four");
6401 assert_eq!(
6402 view.selected_display_ranges(cx),
6403 &[
6404 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
6405 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
6406 ]
6407 );
6408
6409 // select across line ending
6410 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
6411
6412 // indent and outdent affect only the preceding line
6413 view.tab(&Tab, cx);
6414 assert_eq!(view.text(cx), "one two\n three\n four");
6415 assert_eq!(
6416 view.selected_display_ranges(cx),
6417 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
6418 );
6419 view.outdent(&Outdent, cx);
6420 assert_eq!(view.text(cx), "one two\nthree\n four");
6421 assert_eq!(
6422 view.selected_display_ranges(cx),
6423 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
6424 );
6425
6426 // Ensure that indenting/outdenting works when the cursor is at column 0.
6427 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6428 view.tab(&Tab, cx);
6429 assert_eq!(view.text(cx), "one two\n three\n four");
6430 assert_eq!(
6431 view.selected_display_ranges(cx),
6432 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6433 );
6434
6435 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6436 view.outdent(&Outdent, cx);
6437 assert_eq!(view.text(cx), "one two\nthree\n four");
6438 assert_eq!(
6439 view.selected_display_ranges(cx),
6440 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6441 );
6442 });
6443 }
6444
6445 #[gpui::test]
6446 fn test_backspace(cx: &mut gpui::MutableAppContext) {
6447 let buffer =
6448 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6449 let settings = EditorSettings::test(&cx);
6450 let (_, view) = cx.add_window(Default::default(), |cx| {
6451 build_editor(buffer.clone(), settings, cx)
6452 });
6453
6454 view.update(cx, |view, cx| {
6455 view.select_display_ranges(
6456 &[
6457 // an empty selection - the preceding character is deleted
6458 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6459 // one character selected - it is deleted
6460 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6461 // a line suffix selected - it is deleted
6462 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6463 ],
6464 cx,
6465 );
6466 view.backspace(&Backspace, cx);
6467 });
6468
6469 assert_eq!(
6470 buffer.read(cx).read(cx).text(),
6471 "oe two three\nfou five six\nseven ten\n"
6472 );
6473 }
6474
6475 #[gpui::test]
6476 fn test_delete(cx: &mut gpui::MutableAppContext) {
6477 let buffer =
6478 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
6479 let settings = EditorSettings::test(&cx);
6480 let (_, view) = cx.add_window(Default::default(), |cx| {
6481 build_editor(buffer.clone(), settings, cx)
6482 });
6483
6484 view.update(cx, |view, cx| {
6485 view.select_display_ranges(
6486 &[
6487 // an empty selection - the following character is deleted
6488 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6489 // one character selected - it is deleted
6490 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
6491 // a line suffix selected - it is deleted
6492 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
6493 ],
6494 cx,
6495 );
6496 view.delete(&Delete, cx);
6497 });
6498
6499 assert_eq!(
6500 buffer.read(cx).read(cx).text(),
6501 "on two three\nfou five six\nseven ten\n"
6502 );
6503 }
6504
6505 #[gpui::test]
6506 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
6507 let settings = EditorSettings::test(&cx);
6508 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6509 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6510 view.update(cx, |view, cx| {
6511 view.select_display_ranges(
6512 &[
6513 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6514 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6515 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6516 ],
6517 cx,
6518 );
6519 view.delete_line(&DeleteLine, cx);
6520 assert_eq!(view.display_text(cx), "ghi");
6521 assert_eq!(
6522 view.selected_display_ranges(cx),
6523 vec![
6524 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6525 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
6526 ]
6527 );
6528 });
6529
6530 let settings = EditorSettings::test(&cx);
6531 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6532 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6533 view.update(cx, |view, cx| {
6534 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
6535 view.delete_line(&DeleteLine, cx);
6536 assert_eq!(view.display_text(cx), "ghi\n");
6537 assert_eq!(
6538 view.selected_display_ranges(cx),
6539 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
6540 );
6541 });
6542 }
6543
6544 #[gpui::test]
6545 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
6546 let settings = EditorSettings::test(&cx);
6547 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6548 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6549 view.update(cx, |view, cx| {
6550 view.select_display_ranges(
6551 &[
6552 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6553 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6554 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6555 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6556 ],
6557 cx,
6558 );
6559 view.duplicate_line(&DuplicateLine, cx);
6560 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
6561 assert_eq!(
6562 view.selected_display_ranges(cx),
6563 vec![
6564 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
6565 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6566 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6567 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
6568 ]
6569 );
6570 });
6571
6572 let settings = EditorSettings::test(&cx);
6573 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
6574 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6575 view.update(cx, |view, cx| {
6576 view.select_display_ranges(
6577 &[
6578 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
6579 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
6580 ],
6581 cx,
6582 );
6583 view.duplicate_line(&DuplicateLine, cx);
6584 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
6585 assert_eq!(
6586 view.selected_display_ranges(cx),
6587 vec![
6588 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
6589 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
6590 ]
6591 );
6592 });
6593 }
6594
6595 #[gpui::test]
6596 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
6597 let settings = EditorSettings::test(&cx);
6598 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6599 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6600 view.update(cx, |view, cx| {
6601 view.fold_ranges(
6602 vec![
6603 Point::new(0, 2)..Point::new(1, 2),
6604 Point::new(2, 3)..Point::new(4, 1),
6605 Point::new(7, 0)..Point::new(8, 4),
6606 ],
6607 cx,
6608 );
6609 view.select_display_ranges(
6610 &[
6611 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6612 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6613 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6614 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
6615 ],
6616 cx,
6617 );
6618 assert_eq!(
6619 view.display_text(cx),
6620 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
6621 );
6622
6623 view.move_line_up(&MoveLineUp, cx);
6624 assert_eq!(
6625 view.display_text(cx),
6626 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
6627 );
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 vec![
6631 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6632 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6633 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6634 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6635 ]
6636 );
6637 });
6638
6639 view.update(cx, |view, cx| {
6640 view.move_line_down(&MoveLineDown, cx);
6641 assert_eq!(
6642 view.display_text(cx),
6643 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
6644 );
6645 assert_eq!(
6646 view.selected_display_ranges(cx),
6647 vec![
6648 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6649 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6650 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6651 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6652 ]
6653 );
6654 });
6655
6656 view.update(cx, |view, cx| {
6657 view.move_line_down(&MoveLineDown, cx);
6658 assert_eq!(
6659 view.display_text(cx),
6660 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
6661 );
6662 assert_eq!(
6663 view.selected_display_ranges(cx),
6664 vec![
6665 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6666 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
6667 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
6668 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
6669 ]
6670 );
6671 });
6672
6673 view.update(cx, |view, cx| {
6674 view.move_line_up(&MoveLineUp, cx);
6675 assert_eq!(
6676 view.display_text(cx),
6677 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
6678 );
6679 assert_eq!(
6680 view.selected_display_ranges(cx),
6681 vec![
6682 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6683 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6684 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
6685 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
6686 ]
6687 );
6688 });
6689 }
6690
6691 #[gpui::test]
6692 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
6693 let settings = EditorSettings::test(&cx);
6694 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
6695 let snapshot = buffer.read(cx).snapshot(cx);
6696 let (_, editor) =
6697 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6698 editor.update(cx, |editor, cx| {
6699 editor.insert_blocks(
6700 [BlockProperties {
6701 position: snapshot.anchor_after(Point::new(2, 0)),
6702 disposition: BlockDisposition::Below,
6703 height: 1,
6704 render: Arc::new(|_| Empty::new().boxed()),
6705 }],
6706 cx,
6707 );
6708 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
6709 editor.move_line_down(&MoveLineDown, cx);
6710 });
6711 }
6712
6713 #[gpui::test]
6714 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
6715 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
6716 let settings = EditorSettings::test(&cx);
6717 let view = cx
6718 .add_window(Default::default(), |cx| {
6719 build_editor(buffer.clone(), settings, cx)
6720 })
6721 .1;
6722
6723 // Cut with three selections. Clipboard text is divided into three slices.
6724 view.update(cx, |view, cx| {
6725 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
6726 view.cut(&Cut, cx);
6727 assert_eq!(view.display_text(cx), "two four six ");
6728 });
6729
6730 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
6731 view.update(cx, |view, cx| {
6732 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
6733 view.paste(&Paste, cx);
6734 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
6735 assert_eq!(
6736 view.selected_display_ranges(cx),
6737 &[
6738 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6739 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
6740 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
6741 ]
6742 );
6743 });
6744
6745 // Paste again but with only two cursors. Since the number of cursors doesn't
6746 // match the number of slices in the clipboard, the entire clipboard text
6747 // is pasted at each cursor.
6748 view.update(cx, |view, cx| {
6749 view.select_ranges(vec![0..0, 31..31], None, cx);
6750 view.handle_input(&Input("( ".into()), cx);
6751 view.paste(&Paste, cx);
6752 view.handle_input(&Input(") ".into()), cx);
6753 assert_eq!(
6754 view.display_text(cx),
6755 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6756 );
6757 });
6758
6759 view.update(cx, |view, cx| {
6760 view.select_ranges(vec![0..0], None, cx);
6761 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
6762 assert_eq!(
6763 view.display_text(cx),
6764 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6765 );
6766 });
6767
6768 // Cut with three selections, one of which is full-line.
6769 view.update(cx, |view, cx| {
6770 view.select_display_ranges(
6771 &[
6772 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
6773 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6774 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
6775 ],
6776 cx,
6777 );
6778 view.cut(&Cut, cx);
6779 assert_eq!(
6780 view.display_text(cx),
6781 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
6782 );
6783 });
6784
6785 // Paste with three selections, noticing how the copied selection that was full-line
6786 // gets inserted before the second cursor.
6787 view.update(cx, |view, cx| {
6788 view.select_display_ranges(
6789 &[
6790 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6791 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6792 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
6793 ],
6794 cx,
6795 );
6796 view.paste(&Paste, cx);
6797 assert_eq!(
6798 view.display_text(cx),
6799 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6800 );
6801 assert_eq!(
6802 view.selected_display_ranges(cx),
6803 &[
6804 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6805 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6806 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
6807 ]
6808 );
6809 });
6810
6811 // Copy with a single cursor only, which writes the whole line into the clipboard.
6812 view.update(cx, |view, cx| {
6813 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
6814 view.copy(&Copy, cx);
6815 });
6816
6817 // Paste with three selections, noticing how the copied full-line selection is inserted
6818 // before the empty selections but replaces the selection that is non-empty.
6819 view.update(cx, |view, cx| {
6820 view.select_display_ranges(
6821 &[
6822 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6823 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
6824 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
6825 ],
6826 cx,
6827 );
6828 view.paste(&Paste, cx);
6829 assert_eq!(
6830 view.display_text(cx),
6831 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
6832 );
6833 assert_eq!(
6834 view.selected_display_ranges(cx),
6835 &[
6836 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6837 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
6838 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
6839 ]
6840 );
6841 });
6842 }
6843
6844 #[gpui::test]
6845 fn test_select_all(cx: &mut gpui::MutableAppContext) {
6846 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
6847 let settings = EditorSettings::test(&cx);
6848 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6849 view.update(cx, |view, cx| {
6850 view.select_all(&SelectAll, cx);
6851 assert_eq!(
6852 view.selected_display_ranges(cx),
6853 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
6854 );
6855 });
6856 }
6857
6858 #[gpui::test]
6859 fn test_select_line(cx: &mut gpui::MutableAppContext) {
6860 let settings = EditorSettings::test(&cx);
6861 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
6862 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6863 view.update(cx, |view, cx| {
6864 view.select_display_ranges(
6865 &[
6866 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6867 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6868 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6869 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
6870 ],
6871 cx,
6872 );
6873 view.select_line(&SelectLine, cx);
6874 assert_eq!(
6875 view.selected_display_ranges(cx),
6876 vec![
6877 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
6878 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
6879 ]
6880 );
6881 });
6882
6883 view.update(cx, |view, cx| {
6884 view.select_line(&SelectLine, cx);
6885 assert_eq!(
6886 view.selected_display_ranges(cx),
6887 vec![
6888 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
6889 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
6890 ]
6891 );
6892 });
6893
6894 view.update(cx, |view, cx| {
6895 view.select_line(&SelectLine, cx);
6896 assert_eq!(
6897 view.selected_display_ranges(cx),
6898 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
6899 );
6900 });
6901 }
6902
6903 #[gpui::test]
6904 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
6905 let settings = EditorSettings::test(&cx);
6906 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
6907 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6908 view.update(cx, |view, cx| {
6909 view.fold_ranges(
6910 vec![
6911 Point::new(0, 2)..Point::new(1, 2),
6912 Point::new(2, 3)..Point::new(4, 1),
6913 Point::new(7, 0)..Point::new(8, 4),
6914 ],
6915 cx,
6916 );
6917 view.select_display_ranges(
6918 &[
6919 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
6920 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6921 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6922 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6923 ],
6924 cx,
6925 );
6926 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
6927 });
6928
6929 view.update(cx, |view, cx| {
6930 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6931 assert_eq!(
6932 view.display_text(cx),
6933 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
6934 );
6935 assert_eq!(
6936 view.selected_display_ranges(cx),
6937 [
6938 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6939 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6940 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6941 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
6942 ]
6943 );
6944 });
6945
6946 view.update(cx, |view, cx| {
6947 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
6948 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
6949 assert_eq!(
6950 view.display_text(cx),
6951 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
6952 );
6953 assert_eq!(
6954 view.selected_display_ranges(cx),
6955 [
6956 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
6957 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6958 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6959 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
6960 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
6961 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
6962 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
6963 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
6964 ]
6965 );
6966 });
6967 }
6968
6969 #[gpui::test]
6970 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
6971 let settings = EditorSettings::test(&cx);
6972 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
6973 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
6974
6975 view.update(cx, |view, cx| {
6976 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
6977 });
6978 view.update(cx, |view, cx| {
6979 view.add_selection_above(&AddSelectionAbove, cx);
6980 assert_eq!(
6981 view.selected_display_ranges(cx),
6982 vec![
6983 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6984 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6985 ]
6986 );
6987 });
6988
6989 view.update(cx, |view, cx| {
6990 view.add_selection_above(&AddSelectionAbove, cx);
6991 assert_eq!(
6992 view.selected_display_ranges(cx),
6993 vec![
6994 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6995 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
6996 ]
6997 );
6998 });
6999
7000 view.update(cx, |view, cx| {
7001 view.add_selection_below(&AddSelectionBelow, cx);
7002 assert_eq!(
7003 view.selected_display_ranges(cx),
7004 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7005 );
7006 });
7007
7008 view.update(cx, |view, cx| {
7009 view.add_selection_below(&AddSelectionBelow, cx);
7010 assert_eq!(
7011 view.selected_display_ranges(cx),
7012 vec![
7013 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7014 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7015 ]
7016 );
7017 });
7018
7019 view.update(cx, |view, cx| {
7020 view.add_selection_below(&AddSelectionBelow, cx);
7021 assert_eq!(
7022 view.selected_display_ranges(cx),
7023 vec![
7024 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7025 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7026 ]
7027 );
7028 });
7029
7030 view.update(cx, |view, cx| {
7031 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7032 });
7033 view.update(cx, |view, cx| {
7034 view.add_selection_below(&AddSelectionBelow, cx);
7035 assert_eq!(
7036 view.selected_display_ranges(cx),
7037 vec![
7038 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7039 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7040 ]
7041 );
7042 });
7043
7044 view.update(cx, |view, cx| {
7045 view.add_selection_below(&AddSelectionBelow, cx);
7046 assert_eq!(
7047 view.selected_display_ranges(cx),
7048 vec![
7049 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7050 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7051 ]
7052 );
7053 });
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![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7060 );
7061 });
7062
7063 view.update(cx, |view, cx| {
7064 view.add_selection_above(&AddSelectionAbove, cx);
7065 assert_eq!(
7066 view.selected_display_ranges(cx),
7067 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7068 );
7069 });
7070
7071 view.update(cx, |view, cx| {
7072 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7073 view.add_selection_below(&AddSelectionBelow, cx);
7074 assert_eq!(
7075 view.selected_display_ranges(cx),
7076 vec![
7077 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7078 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7079 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7080 ]
7081 );
7082 });
7083
7084 view.update(cx, |view, cx| {
7085 view.add_selection_below(&AddSelectionBelow, cx);
7086 assert_eq!(
7087 view.selected_display_ranges(cx),
7088 vec![
7089 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7090 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7091 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7092 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7093 ]
7094 );
7095 });
7096
7097 view.update(cx, |view, cx| {
7098 view.add_selection_above(&AddSelectionAbove, cx);
7099 assert_eq!(
7100 view.selected_display_ranges(cx),
7101 vec![
7102 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7103 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7104 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7105 ]
7106 );
7107 });
7108
7109 view.update(cx, |view, cx| {
7110 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7111 });
7112 view.update(cx, |view, cx| {
7113 view.add_selection_above(&AddSelectionAbove, cx);
7114 assert_eq!(
7115 view.selected_display_ranges(cx),
7116 vec![
7117 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7118 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7119 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7120 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7121 ]
7122 );
7123 });
7124
7125 view.update(cx, |view, cx| {
7126 view.add_selection_below(&AddSelectionBelow, cx);
7127 assert_eq!(
7128 view.selected_display_ranges(cx),
7129 vec![
7130 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7131 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7132 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7133 ]
7134 );
7135 });
7136 }
7137
7138 #[gpui::test]
7139 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
7140 let settings = cx.read(EditorSettings::test);
7141 let language = Arc::new(Language::new(
7142 LanguageConfig::default(),
7143 Some(tree_sitter_rust::language()),
7144 ));
7145
7146 let text = r#"
7147 use mod1::mod2::{mod3, mod4};
7148
7149 fn fn_1(param1: bool, param2: &str) {
7150 let var1 = "text";
7151 }
7152 "#
7153 .unindent();
7154
7155 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7156 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7157 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7158 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7159 .await;
7160
7161 view.update(&mut cx, |view, cx| {
7162 view.select_display_ranges(
7163 &[
7164 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7165 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7166 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7167 ],
7168 cx,
7169 );
7170 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7171 });
7172 assert_eq!(
7173 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7174 &[
7175 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7176 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7177 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7178 ]
7179 );
7180
7181 view.update(&mut cx, |view, cx| {
7182 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7183 });
7184 assert_eq!(
7185 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7186 &[
7187 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7188 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7189 ]
7190 );
7191
7192 view.update(&mut cx, |view, cx| {
7193 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7194 });
7195 assert_eq!(
7196 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7197 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7198 );
7199
7200 // Trying to expand the selected syntax node one more time has no effect.
7201 view.update(&mut cx, |view, cx| {
7202 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7203 });
7204 assert_eq!(
7205 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7206 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7207 );
7208
7209 view.update(&mut cx, |view, cx| {
7210 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, 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(4, 1)..DisplayPoint::new(2, 0),
7217 ]
7218 );
7219
7220 view.update(&mut cx, |view, cx| {
7221 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7222 });
7223 assert_eq!(
7224 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7225 &[
7226 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7227 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7228 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7229 ]
7230 );
7231
7232 view.update(&mut cx, |view, cx| {
7233 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7234 });
7235 assert_eq!(
7236 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7237 &[
7238 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7239 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7240 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7241 ]
7242 );
7243
7244 // Trying to shrink the selected syntax node one more time has no effect.
7245 view.update(&mut cx, |view, cx| {
7246 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7247 });
7248 assert_eq!(
7249 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7250 &[
7251 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7252 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7253 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7254 ]
7255 );
7256
7257 // Ensure that we keep expanding the selection if the larger selection starts or ends within
7258 // a fold.
7259 view.update(&mut cx, |view, cx| {
7260 view.fold_ranges(
7261 vec![
7262 Point::new(0, 21)..Point::new(0, 24),
7263 Point::new(3, 20)..Point::new(3, 22),
7264 ],
7265 cx,
7266 );
7267 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7268 });
7269 assert_eq!(
7270 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
7271 &[
7272 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7273 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7274 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
7275 ]
7276 );
7277 }
7278
7279 #[gpui::test]
7280 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
7281 let settings = cx.read(EditorSettings::test);
7282 let language = Arc::new(
7283 Language::new(
7284 LanguageConfig {
7285 brackets: vec![
7286 BracketPair {
7287 start: "{".to_string(),
7288 end: "}".to_string(),
7289 close: false,
7290 newline: true,
7291 },
7292 BracketPair {
7293 start: "(".to_string(),
7294 end: ")".to_string(),
7295 close: false,
7296 newline: true,
7297 },
7298 ],
7299 ..Default::default()
7300 },
7301 Some(tree_sitter_rust::language()),
7302 )
7303 .with_indents_query(
7304 r#"
7305 (_ "(" ")" @end) @indent
7306 (_ "{" "}" @end) @indent
7307 "#,
7308 )
7309 .unwrap(),
7310 );
7311
7312 let text = "fn a() {}";
7313
7314 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7315 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7316 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7317 editor
7318 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
7319 .await;
7320
7321 editor.update(&mut cx, |editor, cx| {
7322 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
7323 editor.newline(&Newline, cx);
7324 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
7325 assert_eq!(
7326 editor.selected_ranges(cx),
7327 &[
7328 Point::new(1, 4)..Point::new(1, 4),
7329 Point::new(3, 4)..Point::new(3, 4),
7330 Point::new(5, 0)..Point::new(5, 0)
7331 ]
7332 );
7333 });
7334 }
7335
7336 #[gpui::test]
7337 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
7338 let settings = cx.read(EditorSettings::test);
7339 let language = Arc::new(Language::new(
7340 LanguageConfig {
7341 brackets: vec![
7342 BracketPair {
7343 start: "{".to_string(),
7344 end: "}".to_string(),
7345 close: true,
7346 newline: true,
7347 },
7348 BracketPair {
7349 start: "/*".to_string(),
7350 end: " */".to_string(),
7351 close: true,
7352 newline: true,
7353 },
7354 ],
7355 ..Default::default()
7356 },
7357 Some(tree_sitter_rust::language()),
7358 ));
7359
7360 let text = r#"
7361 a
7362
7363 /
7364
7365 "#
7366 .unindent();
7367
7368 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7369 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7370 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7371 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7372 .await;
7373
7374 view.update(&mut cx, |view, cx| {
7375 view.select_display_ranges(
7376 &[
7377 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7378 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7379 ],
7380 cx,
7381 );
7382 view.handle_input(&Input("{".to_string()), cx);
7383 view.handle_input(&Input("{".to_string()), cx);
7384 view.handle_input(&Input("{".to_string()), cx);
7385 assert_eq!(
7386 view.text(cx),
7387 "
7388 {{{}}}
7389 {{{}}}
7390 /
7391
7392 "
7393 .unindent()
7394 );
7395
7396 view.move_right(&MoveRight, cx);
7397 view.handle_input(&Input("}".to_string()), cx);
7398 view.handle_input(&Input("}".to_string()), cx);
7399 view.handle_input(&Input("}".to_string()), cx);
7400 assert_eq!(
7401 view.text(cx),
7402 "
7403 {{{}}}}
7404 {{{}}}}
7405 /
7406
7407 "
7408 .unindent()
7409 );
7410
7411 view.undo(&Undo, cx);
7412 view.handle_input(&Input("/".to_string()), cx);
7413 view.handle_input(&Input("*".to_string()), cx);
7414 assert_eq!(
7415 view.text(cx),
7416 "
7417 /* */
7418 /* */
7419 /
7420
7421 "
7422 .unindent()
7423 );
7424
7425 view.undo(&Undo, cx);
7426 view.select_display_ranges(
7427 &[
7428 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7429 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7430 ],
7431 cx,
7432 );
7433 view.handle_input(&Input("*".to_string()), cx);
7434 assert_eq!(
7435 view.text(cx),
7436 "
7437 a
7438
7439 /*
7440 *
7441 "
7442 .unindent()
7443 );
7444 });
7445 }
7446
7447 #[gpui::test]
7448 async fn test_snippets(mut cx: gpui::TestAppContext) {
7449 let settings = cx.read(EditorSettings::test);
7450
7451 let text = "
7452 a. b
7453 a. b
7454 a. b
7455 "
7456 .unindent();
7457 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
7458 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7459
7460 editor.update(&mut cx, |editor, cx| {
7461 let buffer = &editor.snapshot(cx).buffer_snapshot;
7462 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
7463 let insertion_ranges = [
7464 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
7465 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
7466 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
7467 ];
7468
7469 editor
7470 .insert_snippet(&insertion_ranges, snippet, cx)
7471 .unwrap();
7472 assert_eq!(
7473 editor.text(cx),
7474 "
7475 a.f(one, two, three) b
7476 a.f(one, two, three) b
7477 a.f(one, two, three) b
7478 "
7479 .unindent()
7480 );
7481 assert_eq!(
7482 editor.selected_ranges::<Point>(cx),
7483 &[
7484 Point::new(0, 4)..Point::new(0, 7),
7485 Point::new(0, 14)..Point::new(0, 19),
7486 Point::new(1, 4)..Point::new(1, 7),
7487 Point::new(1, 14)..Point::new(1, 19),
7488 Point::new(2, 4)..Point::new(2, 7),
7489 Point::new(2, 14)..Point::new(2, 19),
7490 ]
7491 );
7492
7493 // Can't move earlier than the first tab stop
7494 editor.move_to_prev_snippet_tabstop(cx);
7495 assert_eq!(
7496 editor.selected_ranges::<Point>(cx),
7497 &[
7498 Point::new(0, 4)..Point::new(0, 7),
7499 Point::new(0, 14)..Point::new(0, 19),
7500 Point::new(1, 4)..Point::new(1, 7),
7501 Point::new(1, 14)..Point::new(1, 19),
7502 Point::new(2, 4)..Point::new(2, 7),
7503 Point::new(2, 14)..Point::new(2, 19),
7504 ]
7505 );
7506
7507 assert!(editor.move_to_next_snippet_tabstop(cx));
7508 assert_eq!(
7509 editor.selected_ranges::<Point>(cx),
7510 &[
7511 Point::new(0, 9)..Point::new(0, 12),
7512 Point::new(1, 9)..Point::new(1, 12),
7513 Point::new(2, 9)..Point::new(2, 12)
7514 ]
7515 );
7516
7517 editor.move_to_prev_snippet_tabstop(cx);
7518 assert_eq!(
7519 editor.selected_ranges::<Point>(cx),
7520 &[
7521 Point::new(0, 4)..Point::new(0, 7),
7522 Point::new(0, 14)..Point::new(0, 19),
7523 Point::new(1, 4)..Point::new(1, 7),
7524 Point::new(1, 14)..Point::new(1, 19),
7525 Point::new(2, 4)..Point::new(2, 7),
7526 Point::new(2, 14)..Point::new(2, 19),
7527 ]
7528 );
7529
7530 assert!(editor.move_to_next_snippet_tabstop(cx));
7531 assert!(editor.move_to_next_snippet_tabstop(cx));
7532 assert_eq!(
7533 editor.selected_ranges::<Point>(cx),
7534 &[
7535 Point::new(0, 20)..Point::new(0, 20),
7536 Point::new(1, 20)..Point::new(1, 20),
7537 Point::new(2, 20)..Point::new(2, 20)
7538 ]
7539 );
7540
7541 // As soon as the last tab stop is reached, snippet state is gone
7542 editor.move_to_prev_snippet_tabstop(cx);
7543 assert_eq!(
7544 editor.selected_ranges::<Point>(cx),
7545 &[
7546 Point::new(0, 20)..Point::new(0, 20),
7547 Point::new(1, 20)..Point::new(1, 20),
7548 Point::new(2, 20)..Point::new(2, 20)
7549 ]
7550 );
7551 });
7552 }
7553
7554 #[gpui::test]
7555 async fn test_completion(mut cx: gpui::TestAppContext) {
7556 let settings = cx.read(EditorSettings::test);
7557 let (language_server, mut fake) = lsp::LanguageServer::fake_with_capabilities(
7558 lsp::ServerCapabilities {
7559 completion_provider: Some(lsp::CompletionOptions {
7560 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
7561 ..Default::default()
7562 }),
7563 ..Default::default()
7564 },
7565 cx.background(),
7566 )
7567 .await;
7568
7569 let text = "
7570 one
7571 two
7572 three
7573 "
7574 .unindent();
7575
7576 let buffer = cx.add_model(|cx| {
7577 Buffer::from_file(
7578 0,
7579 text,
7580 Box::new(FakeFile {
7581 path: Arc::from(Path::new("/the/file")),
7582 }),
7583 cx,
7584 )
7585 .with_language_server(language_server, cx)
7586 });
7587 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7588 buffer.next_notification(&cx).await;
7589
7590 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7591
7592 editor.update(&mut cx, |editor, cx| {
7593 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
7594 editor.handle_input(&Input(".".to_string()), cx);
7595 });
7596
7597 handle_completion_request(
7598 &mut fake,
7599 "/the/file",
7600 Point::new(0, 4),
7601 &[
7602 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
7603 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
7604 ],
7605 )
7606 .await;
7607 editor.next_notification(&cx).await;
7608
7609 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7610 editor.move_down(&MoveDown, cx);
7611 let apply_additional_edits = editor
7612 .confirm_completion(&ConfirmCompletion(None), cx)
7613 .unwrap();
7614 assert_eq!(
7615 editor.text(cx),
7616 "
7617 one.second_completion
7618 two
7619 three
7620 "
7621 .unindent()
7622 );
7623 apply_additional_edits
7624 });
7625
7626 handle_resolve_completion_request(
7627 &mut fake,
7628 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
7629 )
7630 .await;
7631 apply_additional_edits.await.unwrap();
7632 assert_eq!(
7633 editor.read_with(&cx, |editor, cx| editor.text(cx)),
7634 "
7635 one.second_completion
7636 two
7637 three
7638 additional edit
7639 "
7640 .unindent()
7641 );
7642
7643 editor.update(&mut cx, |editor, cx| {
7644 editor.select_ranges(
7645 [
7646 Point::new(1, 3)..Point::new(1, 3),
7647 Point::new(2, 5)..Point::new(2, 5),
7648 ],
7649 None,
7650 cx,
7651 );
7652
7653 editor.handle_input(&Input(" ".to_string()), cx);
7654 assert!(editor.context_menu.is_none());
7655 editor.handle_input(&Input("s".to_string()), cx);
7656 assert!(editor.context_menu.is_none());
7657 });
7658
7659 handle_completion_request(
7660 &mut fake,
7661 "/the/file",
7662 Point::new(2, 7),
7663 &[
7664 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
7665 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
7666 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
7667 ],
7668 )
7669 .await;
7670 editor
7671 .condition(&cx, |editor, _| editor.context_menu.is_some())
7672 .await;
7673
7674 editor.update(&mut cx, |editor, cx| {
7675 editor.handle_input(&Input("i".to_string()), cx);
7676 });
7677
7678 handle_completion_request(
7679 &mut fake,
7680 "/the/file",
7681 Point::new(2, 8),
7682 &[
7683 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
7684 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
7685 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
7686 ],
7687 )
7688 .await;
7689 editor.next_notification(&cx).await;
7690
7691 let apply_additional_edits = editor.update(&mut cx, |editor, cx| {
7692 let apply_additional_edits = editor
7693 .confirm_completion(&ConfirmCompletion(None), cx)
7694 .unwrap();
7695 assert_eq!(
7696 editor.text(cx),
7697 "
7698 one.second_completion
7699 two sixth_completion
7700 three sixth_completion
7701 additional edit
7702 "
7703 .unindent()
7704 );
7705 apply_additional_edits
7706 });
7707 handle_resolve_completion_request(&mut fake, None).await;
7708 apply_additional_edits.await.unwrap();
7709
7710 async fn handle_completion_request(
7711 fake: &mut FakeLanguageServer,
7712 path: &str,
7713 position: Point,
7714 completions: &[(Range<Point>, &str)],
7715 ) {
7716 let (id, params) = fake.receive_request::<lsp::request::Completion>().await;
7717 assert_eq!(
7718 params.text_document_position.text_document.uri,
7719 lsp::Url::from_file_path(path).unwrap()
7720 );
7721 assert_eq!(
7722 params.text_document_position.position,
7723 lsp::Position::new(position.row, position.column)
7724 );
7725
7726 let completions = completions
7727 .iter()
7728 .map(|(range, new_text)| lsp::CompletionItem {
7729 label: new_text.to_string(),
7730 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
7731 range: lsp::Range::new(
7732 lsp::Position::new(range.start.row, range.start.column),
7733 lsp::Position::new(range.start.row, range.start.column),
7734 ),
7735 new_text: new_text.to_string(),
7736 })),
7737 ..Default::default()
7738 })
7739 .collect();
7740 fake.respond(id, Some(lsp::CompletionResponse::Array(completions)))
7741 .await;
7742 }
7743
7744 async fn handle_resolve_completion_request(
7745 fake: &mut FakeLanguageServer,
7746 edit: Option<(Range<Point>, &str)>,
7747 ) {
7748 let (id, _) = fake
7749 .receive_request::<lsp::request::ResolveCompletionItem>()
7750 .await;
7751 fake.respond(
7752 id,
7753 lsp::CompletionItem {
7754 additional_text_edits: edit.map(|(range, new_text)| {
7755 vec![lsp::TextEdit::new(
7756 lsp::Range::new(
7757 lsp::Position::new(range.start.row, range.start.column),
7758 lsp::Position::new(range.end.row, range.end.column),
7759 ),
7760 new_text.to_string(),
7761 )]
7762 }),
7763 ..Default::default()
7764 },
7765 )
7766 .await;
7767 }
7768 }
7769
7770 #[gpui::test]
7771 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
7772 let settings = cx.read(EditorSettings::test);
7773 let language = Arc::new(Language::new(
7774 LanguageConfig {
7775 line_comment: Some("// ".to_string()),
7776 ..Default::default()
7777 },
7778 Some(tree_sitter_rust::language()),
7779 ));
7780
7781 let text = "
7782 fn a() {
7783 //b();
7784 // c();
7785 // d();
7786 }
7787 "
7788 .unindent();
7789
7790 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7791 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7792 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
7793
7794 view.update(&mut cx, |editor, cx| {
7795 // If multiple selections intersect a line, the line is only
7796 // toggled once.
7797 editor.select_display_ranges(
7798 &[
7799 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
7800 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
7801 ],
7802 cx,
7803 );
7804 editor.toggle_comments(&ToggleComments, cx);
7805 assert_eq!(
7806 editor.text(cx),
7807 "
7808 fn a() {
7809 b();
7810 c();
7811 d();
7812 }
7813 "
7814 .unindent()
7815 );
7816
7817 // The comment prefix is inserted at the same column for every line
7818 // in a selection.
7819 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
7820 editor.toggle_comments(&ToggleComments, cx);
7821 assert_eq!(
7822 editor.text(cx),
7823 "
7824 fn a() {
7825 // b();
7826 // c();
7827 // d();
7828 }
7829 "
7830 .unindent()
7831 );
7832
7833 // If a selection ends at the beginning of a line, that line is not toggled.
7834 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
7835 editor.toggle_comments(&ToggleComments, cx);
7836 assert_eq!(
7837 editor.text(cx),
7838 "
7839 fn a() {
7840 // b();
7841 c();
7842 // d();
7843 }
7844 "
7845 .unindent()
7846 );
7847 });
7848 }
7849
7850 #[gpui::test]
7851 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
7852 let settings = EditorSettings::test(cx);
7853 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7854 let multibuffer = cx.add_model(|cx| {
7855 let mut multibuffer = MultiBuffer::new(0);
7856 multibuffer.push_excerpt(
7857 ExcerptProperties {
7858 buffer: &buffer,
7859 range: Point::new(0, 0)..Point::new(0, 4),
7860 },
7861 cx,
7862 );
7863 multibuffer.push_excerpt(
7864 ExcerptProperties {
7865 buffer: &buffer,
7866 range: Point::new(1, 0)..Point::new(1, 4),
7867 },
7868 cx,
7869 );
7870 multibuffer
7871 });
7872
7873 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
7874
7875 let (_, view) = cx.add_window(Default::default(), |cx| {
7876 build_editor(multibuffer, settings, cx)
7877 });
7878 view.update(cx, |view, cx| {
7879 view.select_display_ranges(
7880 &[
7881 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7882 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7883 ],
7884 cx,
7885 );
7886
7887 view.handle_input(&Input("X".to_string()), cx);
7888 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
7889 assert_eq!(
7890 view.selected_display_ranges(cx),
7891 &[
7892 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7893 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7894 ]
7895 )
7896 });
7897 }
7898
7899 #[gpui::test]
7900 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
7901 let settings = EditorSettings::test(cx);
7902 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7903 let multibuffer = cx.add_model(|cx| {
7904 let mut multibuffer = MultiBuffer::new(0);
7905 multibuffer.push_excerpt(
7906 ExcerptProperties {
7907 buffer: &buffer,
7908 range: Point::new(0, 0)..Point::new(1, 4),
7909 },
7910 cx,
7911 );
7912 multibuffer.push_excerpt(
7913 ExcerptProperties {
7914 buffer: &buffer,
7915 range: Point::new(1, 0)..Point::new(2, 4),
7916 },
7917 cx,
7918 );
7919 multibuffer
7920 });
7921
7922 assert_eq!(
7923 multibuffer.read(cx).read(cx).text(),
7924 "aaaa\nbbbb\nbbbb\ncccc"
7925 );
7926
7927 let (_, view) = cx.add_window(Default::default(), |cx| {
7928 build_editor(multibuffer, settings, cx)
7929 });
7930 view.update(cx, |view, cx| {
7931 view.select_display_ranges(
7932 &[
7933 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7934 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
7935 ],
7936 cx,
7937 );
7938
7939 view.handle_input(&Input("X".to_string()), cx);
7940 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
7941 assert_eq!(
7942 view.selected_display_ranges(cx),
7943 &[
7944 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7945 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7946 ]
7947 );
7948
7949 view.newline(&Newline, cx);
7950 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
7951 assert_eq!(
7952 view.selected_display_ranges(cx),
7953 &[
7954 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7955 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7956 ]
7957 );
7958 });
7959 }
7960
7961 #[gpui::test]
7962 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
7963 let settings = EditorSettings::test(cx);
7964 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
7965 let mut excerpt1_id = None;
7966 let multibuffer = cx.add_model(|cx| {
7967 let mut multibuffer = MultiBuffer::new(0);
7968 excerpt1_id = Some(multibuffer.push_excerpt(
7969 ExcerptProperties {
7970 buffer: &buffer,
7971 range: Point::new(0, 0)..Point::new(1, 4),
7972 },
7973 cx,
7974 ));
7975 multibuffer.push_excerpt(
7976 ExcerptProperties {
7977 buffer: &buffer,
7978 range: Point::new(1, 0)..Point::new(2, 4),
7979 },
7980 cx,
7981 );
7982 multibuffer
7983 });
7984 assert_eq!(
7985 multibuffer.read(cx).read(cx).text(),
7986 "aaaa\nbbbb\nbbbb\ncccc"
7987 );
7988 let (_, editor) = cx.add_window(Default::default(), |cx| {
7989 let mut editor = build_editor(multibuffer.clone(), settings, cx);
7990 editor.select_display_ranges(
7991 &[
7992 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7993 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7994 ],
7995 cx,
7996 );
7997 editor
7998 });
7999
8000 // Refreshing selections is a no-op when excerpts haven't changed.
8001 editor.update(cx, |editor, cx| {
8002 editor.refresh_selections(cx);
8003 assert_eq!(
8004 editor.selected_display_ranges(cx),
8005 [
8006 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8007 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8008 ]
8009 );
8010 });
8011
8012 multibuffer.update(cx, |multibuffer, cx| {
8013 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8014 });
8015 editor.update(cx, |editor, cx| {
8016 // Removing an excerpt causes the first selection to become degenerate.
8017 assert_eq!(
8018 editor.selected_display_ranges(cx),
8019 [
8020 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
8021 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
8022 ]
8023 );
8024
8025 // Refreshing selections will relocate the first selection to the original buffer
8026 // location.
8027 editor.refresh_selections(cx);
8028 assert_eq!(
8029 editor.selected_display_ranges(cx),
8030 [
8031 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8032 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3)
8033 ]
8034 );
8035 });
8036 }
8037
8038 #[gpui::test]
8039 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
8040 let settings = cx.read(EditorSettings::test);
8041 let language = Arc::new(Language::new(
8042 LanguageConfig {
8043 brackets: vec![
8044 BracketPair {
8045 start: "{".to_string(),
8046 end: "}".to_string(),
8047 close: true,
8048 newline: true,
8049 },
8050 BracketPair {
8051 start: "/* ".to_string(),
8052 end: " */".to_string(),
8053 close: true,
8054 newline: true,
8055 },
8056 ],
8057 ..Default::default()
8058 },
8059 Some(tree_sitter_rust::language()),
8060 ));
8061
8062 let text = concat!(
8063 "{ }\n", // Suppress rustfmt
8064 " x\n", //
8065 " /* */\n", //
8066 "x\n", //
8067 "{{} }\n", //
8068 );
8069
8070 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8071 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8072 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
8073 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8074 .await;
8075
8076 view.update(&mut cx, |view, cx| {
8077 view.select_display_ranges(
8078 &[
8079 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8080 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8081 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8082 ],
8083 cx,
8084 );
8085 view.newline(&Newline, cx);
8086
8087 assert_eq!(
8088 view.buffer().read(cx).read(cx).text(),
8089 concat!(
8090 "{ \n", // Suppress rustfmt
8091 "\n", //
8092 "}\n", //
8093 " x\n", //
8094 " /* \n", //
8095 " \n", //
8096 " */\n", //
8097 "x\n", //
8098 "{{} \n", //
8099 "}\n", //
8100 )
8101 );
8102 });
8103 }
8104
8105 #[gpui::test]
8106 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8107 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8108 let settings = EditorSettings::test(&cx);
8109 let (_, editor) = cx.add_window(Default::default(), |cx| {
8110 build_editor(buffer.clone(), settings, cx)
8111 });
8112
8113 editor.update(cx, |editor, cx| {
8114 struct Type1;
8115 struct Type2;
8116
8117 let buffer = buffer.read(cx).snapshot(cx);
8118
8119 let anchor_range = |range: Range<Point>| {
8120 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8121 };
8122
8123 editor.highlight_ranges::<Type1>(
8124 vec![
8125 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8126 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8127 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8128 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8129 ],
8130 Color::red(),
8131 cx,
8132 );
8133 editor.highlight_ranges::<Type2>(
8134 vec![
8135 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8136 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8137 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8138 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8139 ],
8140 Color::green(),
8141 cx,
8142 );
8143
8144 let snapshot = editor.snapshot(cx);
8145 let mut highlighted_ranges = editor.highlighted_ranges_in_range(
8146 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8147 &snapshot,
8148 );
8149 // Enforce a consistent ordering based on color without relying on the ordering of the
8150 // highlight's `TypeId` which is non-deterministic.
8151 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8152 assert_eq!(
8153 highlighted_ranges,
8154 &[
8155 (
8156 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8157 Color::green(),
8158 ),
8159 (
8160 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8161 Color::green(),
8162 ),
8163 (
8164 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8165 Color::red(),
8166 ),
8167 (
8168 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8169 Color::red(),
8170 ),
8171 ]
8172 );
8173 assert_eq!(
8174 editor.highlighted_ranges_in_range(
8175 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
8176 &snapshot,
8177 ),
8178 &[(
8179 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8180 Color::red(),
8181 )]
8182 );
8183 });
8184 }
8185
8186 #[test]
8187 fn test_combine_syntax_and_fuzzy_match_highlights() {
8188 let string = "abcdefghijklmnop";
8189 let default = HighlightStyle::default();
8190 let syntax_ranges = [
8191 (
8192 0..3,
8193 HighlightStyle {
8194 color: Color::red(),
8195 ..default
8196 },
8197 ),
8198 (
8199 4..8,
8200 HighlightStyle {
8201 color: Color::green(),
8202 ..default
8203 },
8204 ),
8205 ];
8206 let match_indices = [4, 6, 7, 8];
8207 assert_eq!(
8208 combine_syntax_and_fuzzy_match_highlights(
8209 &string,
8210 default,
8211 syntax_ranges.into_iter(),
8212 &match_indices,
8213 ),
8214 &[
8215 (
8216 0..3,
8217 HighlightStyle {
8218 color: Color::red(),
8219 ..default
8220 },
8221 ),
8222 (
8223 4..5,
8224 HighlightStyle {
8225 color: Color::green(),
8226 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8227 ..default
8228 },
8229 ),
8230 (
8231 5..6,
8232 HighlightStyle {
8233 color: Color::green(),
8234 ..default
8235 },
8236 ),
8237 (
8238 6..8,
8239 HighlightStyle {
8240 color: Color::green(),
8241 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8242 ..default
8243 },
8244 ),
8245 (
8246 8..9,
8247 HighlightStyle {
8248 font_properties: *fonts::Properties::default().weight(fonts::Weight::BOLD),
8249 ..default
8250 },
8251 ),
8252 ]
8253 );
8254 }
8255
8256 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
8257 let point = DisplayPoint::new(row as u32, column as u32);
8258 point..point
8259 }
8260
8261 fn build_editor(
8262 buffer: ModelHandle<MultiBuffer>,
8263 settings: EditorSettings,
8264 cx: &mut ViewContext<Editor>,
8265 ) -> Editor {
8266 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), None, cx)
8267 }
8268}
8269
8270trait RangeExt<T> {
8271 fn sorted(&self) -> Range<T>;
8272 fn to_inclusive(&self) -> RangeInclusive<T>;
8273}
8274
8275impl<T: Ord + Clone> RangeExt<T> for Range<T> {
8276 fn sorted(&self) -> Self {
8277 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
8278 }
8279
8280 fn to_inclusive(&self) -> RangeInclusive<T> {
8281 self.start.clone()..=self.end.clone()
8282 }
8283}