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, Bound, 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, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use items::{BufferItemHandle, MultiBufferItemHandle};
32use itertools::Itertools as _;
33pub use language::{char_kind, CharKind};
34use language::{
35 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
36 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
37};
38use multi_buffer::MultiBufferChunks;
39pub use multi_buffer::{
40 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
41};
42use ordered_float::OrderedFloat;
43use project::{Project, ProjectTransaction};
44use serde::{Deserialize, Serialize};
45use smallvec::SmallVec;
46use smol::Timer;
47use snippet::Snippet;
48use std::{
49 any::TypeId,
50 cmp::{self, Ordering, Reverse},
51 iter::{self, FromIterator},
52 mem,
53 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
54 sync::Arc,
55 time::{Duration, Instant},
56};
57pub use sum_tree::Bias;
58use text::rope::TextDimension;
59use theme::DiagnosticStyle;
60use util::{post_inc, ResultExt, TryFutureExt};
61use workspace::{settings, ItemNavHistory, PathOpener, Settings, Workspace};
62
63const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
64const MAX_LINE_LEN: usize = 1024;
65const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
66
67action!(Cancel);
68action!(Backspace);
69action!(Delete);
70action!(Input, String);
71action!(Newline);
72action!(Tab);
73action!(Outdent);
74action!(DeleteLine);
75action!(DeleteToPreviousWordBoundary);
76action!(DeleteToNextWordBoundary);
77action!(DeleteToBeginningOfLine);
78action!(DeleteToEndOfLine);
79action!(CutToEndOfLine);
80action!(DuplicateLine);
81action!(MoveLineUp);
82action!(MoveLineDown);
83action!(Cut);
84action!(Copy);
85action!(Paste);
86action!(Undo);
87action!(Redo);
88action!(MoveUp);
89action!(MoveDown);
90action!(MoveLeft);
91action!(MoveRight);
92action!(MoveToPreviousWordBoundary);
93action!(MoveToNextWordBoundary);
94action!(MoveToBeginningOfLine);
95action!(MoveToEndOfLine);
96action!(MoveToBeginning);
97action!(MoveToEnd);
98action!(SelectUp);
99action!(SelectDown);
100action!(SelectLeft);
101action!(SelectRight);
102action!(SelectToPreviousWordBoundary);
103action!(SelectToNextWordBoundary);
104action!(SelectToBeginningOfLine, bool);
105action!(SelectToEndOfLine, bool);
106action!(SelectToBeginning);
107action!(SelectToEnd);
108action!(SelectAll);
109action!(SelectLine);
110action!(SplitSelectionIntoLines);
111action!(AddSelectionAbove);
112action!(AddSelectionBelow);
113action!(SelectNext, bool);
114action!(ToggleComments);
115action!(SelectLargerSyntaxNode);
116action!(SelectSmallerSyntaxNode);
117action!(MoveToEnclosingBracket);
118action!(GoToDiagnostic, Direction);
119action!(GoToDefinition);
120action!(FindAllReferences);
121action!(Rename);
122action!(ConfirmRename);
123action!(PageUp);
124action!(PageDown);
125action!(Fold);
126action!(Unfold);
127action!(FoldSelectedRanges);
128action!(Scroll, Vector2F);
129action!(Select, SelectPhase);
130action!(ShowCompletions);
131action!(ToggleCodeActions, bool);
132action!(ConfirmCompletion, Option<usize>);
133action!(ConfirmCodeAction, Option<usize>);
134action!(OpenExcerpts);
135
136enum DocumentHighlightRead {}
137enum DocumentHighlightWrite {}
138
139#[derive(Copy, Clone, PartialEq, Eq)]
140pub enum Direction {
141 Prev,
142 Next,
143}
144
145pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
146 path_openers.push(Box::new(items::BufferOpener));
147 cx.add_bindings(vec![
148 Binding::new("escape", Cancel, Some("Editor")),
149 Binding::new("backspace", Backspace, Some("Editor")),
150 Binding::new("ctrl-h", Backspace, Some("Editor")),
151 Binding::new("delete", Delete, Some("Editor")),
152 Binding::new("ctrl-d", Delete, Some("Editor")),
153 Binding::new("enter", Newline, Some("Editor && mode == full")),
154 Binding::new(
155 "alt-enter",
156 Input("\n".into()),
157 Some("Editor && mode == auto_height"),
158 ),
159 Binding::new(
160 "enter",
161 ConfirmCompletion(None),
162 Some("Editor && showing_completions"),
163 ),
164 Binding::new(
165 "enter",
166 ConfirmCodeAction(None),
167 Some("Editor && showing_code_actions"),
168 ),
169 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
170 Binding::new("tab", Tab, Some("Editor")),
171 Binding::new(
172 "tab",
173 ConfirmCompletion(None),
174 Some("Editor && showing_completions"),
175 ),
176 Binding::new("shift-tab", Outdent, Some("Editor")),
177 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
178 Binding::new(
179 "alt-backspace",
180 DeleteToPreviousWordBoundary,
181 Some("Editor"),
182 ),
183 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
184 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
185 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
186 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
187 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
188 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
189 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
190 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
191 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
192 Binding::new("cmd-x", Cut, Some("Editor")),
193 Binding::new("cmd-c", Copy, Some("Editor")),
194 Binding::new("cmd-v", Paste, Some("Editor")),
195 Binding::new("cmd-z", Undo, Some("Editor")),
196 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
197 Binding::new("up", MoveUp, Some("Editor")),
198 Binding::new("down", MoveDown, Some("Editor")),
199 Binding::new("left", MoveLeft, Some("Editor")),
200 Binding::new("right", MoveRight, Some("Editor")),
201 Binding::new("ctrl-p", MoveUp, Some("Editor")),
202 Binding::new("ctrl-n", MoveDown, Some("Editor")),
203 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
204 Binding::new("ctrl-f", MoveRight, Some("Editor")),
205 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
206 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
207 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
208 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
209 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
210 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
211 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
212 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
213 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
214 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
215 Binding::new("shift-up", SelectUp, Some("Editor")),
216 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
217 Binding::new("shift-down", SelectDown, Some("Editor")),
218 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
219 Binding::new("shift-left", SelectLeft, Some("Editor")),
220 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
221 Binding::new("shift-right", SelectRight, Some("Editor")),
222 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
223 Binding::new(
224 "alt-shift-left",
225 SelectToPreviousWordBoundary,
226 Some("Editor"),
227 ),
228 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
229 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
230 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
231 Binding::new(
232 "cmd-shift-left",
233 SelectToBeginningOfLine(true),
234 Some("Editor"),
235 ),
236 Binding::new(
237 "ctrl-shift-A",
238 SelectToBeginningOfLine(true),
239 Some("Editor"),
240 ),
241 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
242 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
243 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
244 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
245 Binding::new("cmd-a", SelectAll, Some("Editor")),
246 Binding::new("cmd-l", SelectLine, Some("Editor")),
247 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
248 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
249 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
250 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
251 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
252 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
253 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
254 Binding::new("cmd-/", ToggleComments, Some("Editor")),
255 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
257 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
258 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
259 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
260 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
261 Binding::new("f2", Rename, Some("Editor")),
262 Binding::new("f12", GoToDefinition, Some("Editor")),
263 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
264 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
265 Binding::new("pageup", PageUp, Some("Editor")),
266 Binding::new("pagedown", PageDown, Some("Editor")),
267 Binding::new("alt-cmd-[", Fold, Some("Editor")),
268 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
269 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
270 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
271 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
272 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
273 ]);
274
275 cx.add_action(Editor::open_new);
276 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
277 cx.add_action(Editor::select);
278 cx.add_action(Editor::cancel);
279 cx.add_action(Editor::handle_input);
280 cx.add_action(Editor::newline);
281 cx.add_action(Editor::backspace);
282 cx.add_action(Editor::delete);
283 cx.add_action(Editor::tab);
284 cx.add_action(Editor::outdent);
285 cx.add_action(Editor::delete_line);
286 cx.add_action(Editor::delete_to_previous_word_boundary);
287 cx.add_action(Editor::delete_to_next_word_boundary);
288 cx.add_action(Editor::delete_to_beginning_of_line);
289 cx.add_action(Editor::delete_to_end_of_line);
290 cx.add_action(Editor::cut_to_end_of_line);
291 cx.add_action(Editor::duplicate_line);
292 cx.add_action(Editor::move_line_up);
293 cx.add_action(Editor::move_line_down);
294 cx.add_action(Editor::cut);
295 cx.add_action(Editor::copy);
296 cx.add_action(Editor::paste);
297 cx.add_action(Editor::undo);
298 cx.add_action(Editor::redo);
299 cx.add_action(Editor::move_up);
300 cx.add_action(Editor::move_down);
301 cx.add_action(Editor::move_left);
302 cx.add_action(Editor::move_right);
303 cx.add_action(Editor::move_to_previous_word_boundary);
304 cx.add_action(Editor::move_to_next_word_boundary);
305 cx.add_action(Editor::move_to_beginning_of_line);
306 cx.add_action(Editor::move_to_end_of_line);
307 cx.add_action(Editor::move_to_beginning);
308 cx.add_action(Editor::move_to_end);
309 cx.add_action(Editor::select_up);
310 cx.add_action(Editor::select_down);
311 cx.add_action(Editor::select_left);
312 cx.add_action(Editor::select_right);
313 cx.add_action(Editor::select_to_previous_word_boundary);
314 cx.add_action(Editor::select_to_next_word_boundary);
315 cx.add_action(Editor::select_to_beginning_of_line);
316 cx.add_action(Editor::select_to_end_of_line);
317 cx.add_action(Editor::select_to_beginning);
318 cx.add_action(Editor::select_to_end);
319 cx.add_action(Editor::select_all);
320 cx.add_action(Editor::select_line);
321 cx.add_action(Editor::split_selection_into_lines);
322 cx.add_action(Editor::add_selection_above);
323 cx.add_action(Editor::add_selection_below);
324 cx.add_action(Editor::select_next);
325 cx.add_action(Editor::toggle_comments);
326 cx.add_action(Editor::select_larger_syntax_node);
327 cx.add_action(Editor::select_smaller_syntax_node);
328 cx.add_action(Editor::move_to_enclosing_bracket);
329 cx.add_action(Editor::go_to_diagnostic);
330 cx.add_action(Editor::go_to_definition);
331 cx.add_action(Editor::page_up);
332 cx.add_action(Editor::page_down);
333 cx.add_action(Editor::fold);
334 cx.add_action(Editor::unfold);
335 cx.add_action(Editor::fold_selected_ranges);
336 cx.add_action(Editor::show_completions);
337 cx.add_action(Editor::toggle_code_actions);
338 cx.add_action(Editor::open_excerpts);
339 cx.add_async_action(Editor::confirm_completion);
340 cx.add_async_action(Editor::confirm_code_action);
341 cx.add_async_action(Editor::rename);
342 cx.add_async_action(Editor::confirm_rename);
343 cx.add_async_action(Editor::find_all_references);
344}
345
346trait SelectionExt {
347 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
348 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
349 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
350 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
351 -> Range<u32>;
352}
353
354trait InvalidationRegion {
355 fn ranges(&self) -> &[Range<Anchor>];
356}
357
358#[derive(Clone, Debug)]
359pub enum SelectPhase {
360 Begin {
361 position: DisplayPoint,
362 add: bool,
363 click_count: usize,
364 },
365 BeginColumnar {
366 position: DisplayPoint,
367 overshoot: u32,
368 },
369 Extend {
370 position: DisplayPoint,
371 click_count: usize,
372 },
373 Update {
374 position: DisplayPoint,
375 overshoot: u32,
376 scroll_position: Vector2F,
377 },
378 End,
379}
380
381#[derive(Clone, Debug)]
382pub enum SelectMode {
383 Character,
384 Word(Range<Anchor>),
385 Line(Range<Anchor>),
386 All,
387}
388
389#[derive(PartialEq, Eq)]
390pub enum Autoscroll {
391 Fit,
392 Center,
393 Newest,
394}
395
396#[derive(Copy, Clone, PartialEq, Eq)]
397pub enum EditorMode {
398 SingleLine,
399 AutoHeight { max_lines: usize },
400 Full,
401}
402
403#[derive(Clone)]
404pub enum SoftWrap {
405 None,
406 EditorWidth,
407 Column(u32),
408}
409
410#[derive(Clone)]
411pub struct EditorStyle {
412 pub text: TextStyle,
413 pub placeholder_text: Option<TextStyle>,
414 pub theme: theme::Editor,
415}
416
417type CompletionId = usize;
418
419pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
420
421type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
422
423pub struct Editor {
424 handle: WeakViewHandle<Self>,
425 buffer: ModelHandle<MultiBuffer>,
426 display_map: ModelHandle<DisplayMap>,
427 next_selection_id: usize,
428 selections: Arc<[Selection<Anchor>]>,
429 pending_selection: Option<PendingSelection>,
430 columnar_selection_tail: Option<Anchor>,
431 add_selections_state: Option<AddSelectionsState>,
432 select_next_state: Option<SelectNextState>,
433 selection_history:
434 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
435 autoclose_stack: InvalidationStack<BracketPairState>,
436 snippet_stack: InvalidationStack<SnippetState>,
437 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
438 active_diagnostics: Option<ActiveDiagnosticGroup>,
439 scroll_position: Vector2F,
440 scroll_top_anchor: Option<Anchor>,
441 autoscroll_request: Option<Autoscroll>,
442 soft_wrap_mode_override: Option<settings::SoftWrap>,
443 get_field_editor_theme: Option<GetFieldEditorTheme>,
444 override_text_style: Option<Box<OverrideTextStyle>>,
445 project: Option<ModelHandle<Project>>,
446 focused: bool,
447 show_local_cursors: bool,
448 show_local_selections: bool,
449 blink_epoch: usize,
450 blinking_paused: bool,
451 mode: EditorMode,
452 vertical_scroll_margin: f32,
453 placeholder_text: Option<Arc<str>>,
454 highlighted_rows: Option<Range<u32>>,
455 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
456 nav_history: Option<ItemNavHistory>,
457 context_menu: Option<ContextMenu>,
458 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
459 next_completion_id: CompletionId,
460 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
461 code_actions_task: Option<Task<()>>,
462 document_highlights_task: Option<Task<()>>,
463 pending_rename: Option<RenameState>,
464 searchable: bool,
465 cursor_shape: CursorShape,
466}
467
468pub struct EditorSnapshot {
469 pub mode: EditorMode,
470 pub display_snapshot: DisplaySnapshot,
471 pub placeholder_text: Option<Arc<str>>,
472 is_focused: bool,
473 scroll_position: Vector2F,
474 scroll_top_anchor: Option<Anchor>,
475}
476
477#[derive(Clone)]
478pub struct PendingSelection {
479 selection: Selection<Anchor>,
480 mode: SelectMode,
481}
482
483struct AddSelectionsState {
484 above: bool,
485 stack: Vec<usize>,
486}
487
488struct SelectNextState {
489 query: AhoCorasick,
490 wordwise: bool,
491 done: bool,
492}
493
494struct BracketPairState {
495 ranges: Vec<Range<Anchor>>,
496 pair: BracketPair,
497}
498
499struct SnippetState {
500 ranges: Vec<Vec<Range<Anchor>>>,
501 active_index: usize,
502}
503
504pub struct RenameState {
505 pub range: Range<Anchor>,
506 pub old_name: String,
507 pub editor: ViewHandle<Editor>,
508 block_id: BlockId,
509}
510
511struct InvalidationStack<T>(Vec<T>);
512
513enum ContextMenu {
514 Completions(CompletionsMenu),
515 CodeActions(CodeActionsMenu),
516}
517
518impl ContextMenu {
519 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
520 if self.visible() {
521 match self {
522 ContextMenu::Completions(menu) => menu.select_prev(cx),
523 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
524 }
525 true
526 } else {
527 false
528 }
529 }
530
531 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
532 if self.visible() {
533 match self {
534 ContextMenu::Completions(menu) => menu.select_next(cx),
535 ContextMenu::CodeActions(menu) => menu.select_next(cx),
536 }
537 true
538 } else {
539 false
540 }
541 }
542
543 fn visible(&self) -> bool {
544 match self {
545 ContextMenu::Completions(menu) => menu.visible(),
546 ContextMenu::CodeActions(menu) => menu.visible(),
547 }
548 }
549
550 fn render(
551 &self,
552 cursor_position: DisplayPoint,
553 style: EditorStyle,
554 cx: &AppContext,
555 ) -> (DisplayPoint, ElementBox) {
556 match self {
557 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
558 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
559 }
560 }
561}
562
563struct CompletionsMenu {
564 id: CompletionId,
565 initial_position: Anchor,
566 buffer: ModelHandle<Buffer>,
567 completions: Arc<[Completion]>,
568 match_candidates: Vec<StringMatchCandidate>,
569 matches: Arc<[StringMatch]>,
570 selected_item: usize,
571 list: UniformListState,
572}
573
574impl CompletionsMenu {
575 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
576 if self.selected_item > 0 {
577 self.selected_item -= 1;
578 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
579 }
580 cx.notify();
581 }
582
583 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
584 if self.selected_item + 1 < self.matches.len() {
585 self.selected_item += 1;
586 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
587 }
588 cx.notify();
589 }
590
591 fn visible(&self) -> bool {
592 !self.matches.is_empty()
593 }
594
595 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
596 enum CompletionTag {}
597
598 let completions = self.completions.clone();
599 let matches = self.matches.clone();
600 let selected_item = self.selected_item;
601 let container_style = style.autocomplete.container;
602 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
603 let start_ix = range.start;
604 for (ix, mat) in matches[range].iter().enumerate() {
605 let completion = &completions[mat.candidate_id];
606 let item_ix = start_ix + ix;
607 items.push(
608 MouseEventHandler::new::<CompletionTag, _, _>(
609 mat.candidate_id,
610 cx,
611 |state, _| {
612 let item_style = if item_ix == selected_item {
613 style.autocomplete.selected_item
614 } else if state.hovered {
615 style.autocomplete.hovered_item
616 } else {
617 style.autocomplete.item
618 };
619
620 Text::new(completion.label.text.clone(), style.text.clone())
621 .with_soft_wrap(false)
622 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
623 &completion.label.text,
624 style.text.color.into(),
625 styled_runs_for_code_label(&completion.label, &style.syntax),
626 &mat.positions,
627 ))
628 .contained()
629 .with_style(item_style)
630 .boxed()
631 },
632 )
633 .with_cursor_style(CursorStyle::PointingHand)
634 .on_mouse_down(move |cx| {
635 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
636 })
637 .boxed(),
638 );
639 }
640 })
641 .with_width_from_item(
642 self.matches
643 .iter()
644 .enumerate()
645 .max_by_key(|(_, mat)| {
646 self.completions[mat.candidate_id]
647 .label
648 .text
649 .chars()
650 .count()
651 })
652 .map(|(ix, _)| ix),
653 )
654 .contained()
655 .with_style(container_style)
656 .boxed()
657 }
658
659 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
660 let mut matches = if let Some(query) = query {
661 fuzzy::match_strings(
662 &self.match_candidates,
663 query,
664 false,
665 100,
666 &Default::default(),
667 executor,
668 )
669 .await
670 } else {
671 self.match_candidates
672 .iter()
673 .enumerate()
674 .map(|(candidate_id, candidate)| StringMatch {
675 candidate_id,
676 score: Default::default(),
677 positions: Default::default(),
678 string: candidate.string.clone(),
679 })
680 .collect()
681 };
682 matches.sort_unstable_by_key(|mat| {
683 (
684 Reverse(OrderedFloat(mat.score)),
685 self.completions[mat.candidate_id].sort_key(),
686 )
687 });
688
689 for mat in &mut matches {
690 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
691 for position in &mut mat.positions {
692 *position += filter_start;
693 }
694 }
695
696 self.matches = matches.into();
697 }
698}
699
700#[derive(Clone)]
701struct CodeActionsMenu {
702 actions: Arc<[CodeAction]>,
703 buffer: ModelHandle<Buffer>,
704 selected_item: usize,
705 list: UniformListState,
706 deployed_from_indicator: bool,
707}
708
709impl CodeActionsMenu {
710 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
711 if self.selected_item > 0 {
712 self.selected_item -= 1;
713 cx.notify()
714 }
715 }
716
717 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
718 if self.selected_item + 1 < self.actions.len() {
719 self.selected_item += 1;
720 cx.notify()
721 }
722 }
723
724 fn visible(&self) -> bool {
725 !self.actions.is_empty()
726 }
727
728 fn render(
729 &self,
730 mut cursor_position: DisplayPoint,
731 style: EditorStyle,
732 ) -> (DisplayPoint, ElementBox) {
733 enum ActionTag {}
734
735 let container_style = style.autocomplete.container;
736 let actions = self.actions.clone();
737 let selected_item = self.selected_item;
738 let element =
739 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
740 let start_ix = range.start;
741 for (ix, action) in actions[range].iter().enumerate() {
742 let item_ix = start_ix + ix;
743 items.push(
744 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
745 let item_style = if item_ix == selected_item {
746 style.autocomplete.selected_item
747 } else if state.hovered {
748 style.autocomplete.hovered_item
749 } else {
750 style.autocomplete.item
751 };
752
753 Text::new(action.lsp_action.title.clone(), style.text.clone())
754 .with_soft_wrap(false)
755 .contained()
756 .with_style(item_style)
757 .boxed()
758 })
759 .with_cursor_style(CursorStyle::PointingHand)
760 .on_mouse_down(move |cx| {
761 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
762 })
763 .boxed(),
764 );
765 }
766 })
767 .with_width_from_item(
768 self.actions
769 .iter()
770 .enumerate()
771 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
772 .map(|(ix, _)| ix),
773 )
774 .contained()
775 .with_style(container_style)
776 .boxed();
777
778 if self.deployed_from_indicator {
779 *cursor_position.column_mut() = 0;
780 }
781
782 (cursor_position, element)
783 }
784}
785
786#[derive(Debug)]
787struct ActiveDiagnosticGroup {
788 primary_range: Range<Anchor>,
789 primary_message: String,
790 blocks: HashMap<BlockId, Diagnostic>,
791 is_valid: bool,
792}
793
794#[derive(Serialize, Deserialize)]
795struct ClipboardSelection {
796 len: usize,
797 is_entire_line: bool,
798}
799
800pub struct NavigationData {
801 anchor: Anchor,
802 offset: usize,
803}
804
805impl Editor {
806 pub fn single_line(
807 field_editor_style: Option<GetFieldEditorTheme>,
808 cx: &mut ViewContext<Self>,
809 ) -> Self {
810 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
811 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
812 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
813 }
814
815 pub fn auto_height(
816 max_lines: usize,
817 field_editor_style: Option<GetFieldEditorTheme>,
818 cx: &mut ViewContext<Self>,
819 ) -> Self {
820 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
821 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
822 Self::new(
823 EditorMode::AutoHeight { max_lines },
824 buffer,
825 None,
826 field_editor_style,
827 cx,
828 )
829 }
830
831 pub fn for_buffer(
832 buffer: ModelHandle<MultiBuffer>,
833 project: Option<ModelHandle<Project>>,
834 cx: &mut ViewContext<Self>,
835 ) -> Self {
836 Self::new(EditorMode::Full, buffer, project, None, cx)
837 }
838
839 pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
840 let mut clone = Self::new(
841 self.mode,
842 self.buffer.clone(),
843 self.project.clone(),
844 self.get_field_editor_theme,
845 cx,
846 );
847 clone.scroll_position = self.scroll_position;
848 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
849 clone.nav_history = Some(nav_history);
850 clone.searchable = self.searchable;
851 clone
852 }
853
854 fn new(
855 mode: EditorMode,
856 buffer: ModelHandle<MultiBuffer>,
857 project: Option<ModelHandle<Project>>,
858 get_field_editor_theme: Option<GetFieldEditorTheme>,
859 cx: &mut ViewContext<Self>,
860 ) -> Self {
861 let display_map = cx.add_model(|cx| {
862 let settings = cx.app_state::<Settings>();
863 let style = build_style(&*settings, get_field_editor_theme, None, cx);
864 DisplayMap::new(
865 buffer.clone(),
866 settings.tab_size,
867 style.text.font_id,
868 style.text.font_size,
869 None,
870 2,
871 1,
872 cx,
873 )
874 });
875 cx.observe(&buffer, Self::on_buffer_changed).detach();
876 cx.subscribe(&buffer, Self::on_buffer_event).detach();
877 cx.observe(&display_map, Self::on_display_map_changed)
878 .detach();
879
880 let mut this = Self {
881 handle: cx.weak_handle(),
882 buffer,
883 display_map,
884 selections: Arc::from([]),
885 pending_selection: Some(PendingSelection {
886 selection: Selection {
887 id: 0,
888 start: Anchor::min(),
889 end: Anchor::min(),
890 reversed: false,
891 goal: SelectionGoal::None,
892 },
893 mode: SelectMode::Character,
894 }),
895 columnar_selection_tail: None,
896 next_selection_id: 1,
897 add_selections_state: None,
898 select_next_state: None,
899 selection_history: Default::default(),
900 autoclose_stack: Default::default(),
901 snippet_stack: Default::default(),
902 select_larger_syntax_node_stack: Vec::new(),
903 active_diagnostics: None,
904 soft_wrap_mode_override: None,
905 get_field_editor_theme,
906 project,
907 scroll_position: Vector2F::zero(),
908 scroll_top_anchor: None,
909 autoscroll_request: None,
910 focused: false,
911 show_local_cursors: false,
912 show_local_selections: true,
913 blink_epoch: 0,
914 blinking_paused: false,
915 mode,
916 vertical_scroll_margin: 3.0,
917 placeholder_text: None,
918 highlighted_rows: None,
919 background_highlights: Default::default(),
920 nav_history: None,
921 context_menu: None,
922 completion_tasks: Default::default(),
923 next_completion_id: 0,
924 available_code_actions: Default::default(),
925 code_actions_task: Default::default(),
926 document_highlights_task: Default::default(),
927 pending_rename: Default::default(),
928 searchable: true,
929 override_text_style: None,
930 cursor_shape: Default::default(),
931 };
932 this.end_selection(cx);
933 this
934 }
935
936 pub fn open_new(
937 workspace: &mut Workspace,
938 _: &workspace::OpenNew,
939 cx: &mut ViewContext<Workspace>,
940 ) {
941 let project = workspace.project();
942 if project.read(cx).is_remote() {
943 cx.propagate_action();
944 } else if let Some(buffer) = project
945 .update(cx, |project, cx| project.create_buffer(cx))
946 .log_err()
947 {
948 workspace.open_item(BufferItemHandle(buffer), cx);
949 }
950 }
951
952 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
953 self.buffer.read(cx).replica_id()
954 }
955
956 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
957 &self.buffer
958 }
959
960 pub fn title(&self, cx: &AppContext) -> String {
961 self.buffer().read(cx).title(cx)
962 }
963
964 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
965 EditorSnapshot {
966 mode: self.mode,
967 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
968 scroll_position: self.scroll_position,
969 scroll_top_anchor: self.scroll_top_anchor.clone(),
970 placeholder_text: self.placeholder_text.clone(),
971 is_focused: self
972 .handle
973 .upgrade(cx)
974 .map_or(false, |handle| handle.is_focused(cx)),
975 }
976 }
977
978 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
979 self.buffer.read(cx).language(cx)
980 }
981
982 fn style(&self, cx: &AppContext) -> EditorStyle {
983 build_style(
984 cx.app_state::<Settings>(),
985 self.get_field_editor_theme,
986 self.override_text_style.as_deref(),
987 cx,
988 )
989 }
990
991 pub fn set_placeholder_text(
992 &mut self,
993 placeholder_text: impl Into<Arc<str>>,
994 cx: &mut ViewContext<Self>,
995 ) {
996 self.placeholder_text = Some(placeholder_text.into());
997 cx.notify();
998 }
999
1000 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1001 self.vertical_scroll_margin = margin_rows as f32;
1002 cx.notify();
1003 }
1004
1005 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1006 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1007
1008 if scroll_position.y() == 0. {
1009 self.scroll_top_anchor = None;
1010 self.scroll_position = scroll_position;
1011 } else {
1012 let scroll_top_buffer_offset =
1013 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1014 let anchor = map
1015 .buffer_snapshot
1016 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1017 self.scroll_position = vec2f(
1018 scroll_position.x(),
1019 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1020 );
1021 self.scroll_top_anchor = Some(anchor);
1022 }
1023
1024 cx.notify();
1025 }
1026
1027 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1028 self.cursor_shape = cursor_shape;
1029 cx.notify();
1030 }
1031
1032 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1033 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1034 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1035 }
1036
1037 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1038 if max < self.scroll_position.x() {
1039 self.scroll_position.set_x(max);
1040 true
1041 } else {
1042 false
1043 }
1044 }
1045
1046 pub fn autoscroll_vertically(
1047 &mut self,
1048 viewport_height: f32,
1049 line_height: f32,
1050 cx: &mut ViewContext<Self>,
1051 ) -> bool {
1052 let visible_lines = viewport_height / line_height;
1053 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1054 let mut scroll_position =
1055 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1056 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1057 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1058 } else {
1059 display_map.max_point().row().saturating_sub(1) as f32
1060 };
1061 if scroll_position.y() > max_scroll_top {
1062 scroll_position.set_y(max_scroll_top);
1063 self.set_scroll_position(scroll_position, cx);
1064 }
1065
1066 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1067 autoscroll
1068 } else {
1069 return false;
1070 };
1071
1072 let first_cursor_top;
1073 let last_cursor_bottom;
1074 if let Some(highlighted_rows) = &self.highlighted_rows {
1075 first_cursor_top = highlighted_rows.start as f32;
1076 last_cursor_bottom = first_cursor_top + 1.;
1077 } else if autoscroll == Autoscroll::Newest {
1078 let newest_selection =
1079 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1080 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1081 last_cursor_bottom = first_cursor_top + 1.;
1082 } else {
1083 let selections = self.local_selections::<Point>(cx);
1084 first_cursor_top = selections
1085 .first()
1086 .unwrap()
1087 .head()
1088 .to_display_point(&display_map)
1089 .row() as f32;
1090 last_cursor_bottom = selections
1091 .last()
1092 .unwrap()
1093 .head()
1094 .to_display_point(&display_map)
1095 .row() as f32
1096 + 1.0;
1097 }
1098
1099 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1100 0.
1101 } else {
1102 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1103 };
1104 if margin < 0.0 {
1105 return false;
1106 }
1107
1108 match autoscroll {
1109 Autoscroll::Fit | Autoscroll::Newest => {
1110 let margin = margin.min(self.vertical_scroll_margin);
1111 let target_top = (first_cursor_top - margin).max(0.0);
1112 let target_bottom = last_cursor_bottom + margin;
1113 let start_row = scroll_position.y();
1114 let end_row = start_row + visible_lines;
1115
1116 if target_top < start_row {
1117 scroll_position.set_y(target_top);
1118 self.set_scroll_position(scroll_position, cx);
1119 } else if target_bottom >= end_row {
1120 scroll_position.set_y(target_bottom - visible_lines);
1121 self.set_scroll_position(scroll_position, cx);
1122 }
1123 }
1124 Autoscroll::Center => {
1125 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1126 self.set_scroll_position(scroll_position, cx);
1127 }
1128 }
1129
1130 true
1131 }
1132
1133 pub fn autoscroll_horizontally(
1134 &mut self,
1135 start_row: u32,
1136 viewport_width: f32,
1137 scroll_width: f32,
1138 max_glyph_width: f32,
1139 layouts: &[text_layout::Line],
1140 cx: &mut ViewContext<Self>,
1141 ) -> bool {
1142 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1143 let selections = self.local_selections::<Point>(cx);
1144
1145 let mut target_left;
1146 let mut target_right;
1147
1148 if self.highlighted_rows.is_some() {
1149 target_left = 0.0_f32;
1150 target_right = 0.0_f32;
1151 } else {
1152 target_left = std::f32::INFINITY;
1153 target_right = 0.0_f32;
1154 for selection in selections {
1155 let head = selection.head().to_display_point(&display_map);
1156 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1157 let start_column = head.column().saturating_sub(3);
1158 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1159 target_left = target_left.min(
1160 layouts[(head.row() - start_row) as usize]
1161 .x_for_index(start_column as usize),
1162 );
1163 target_right = target_right.max(
1164 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1165 + max_glyph_width,
1166 );
1167 }
1168 }
1169 }
1170
1171 target_right = target_right.min(scroll_width);
1172
1173 if target_right - target_left > viewport_width {
1174 return false;
1175 }
1176
1177 let scroll_left = self.scroll_position.x() * max_glyph_width;
1178 let scroll_right = scroll_left + viewport_width;
1179
1180 if target_left < scroll_left {
1181 self.scroll_position.set_x(target_left / max_glyph_width);
1182 true
1183 } else if target_right > scroll_right {
1184 self.scroll_position
1185 .set_x((target_right - viewport_width) / max_glyph_width);
1186 true
1187 } else {
1188 false
1189 }
1190 }
1191
1192 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1193 self.hide_context_menu(cx);
1194
1195 match phase {
1196 SelectPhase::Begin {
1197 position,
1198 add,
1199 click_count,
1200 } => self.begin_selection(*position, *add, *click_count, cx),
1201 SelectPhase::BeginColumnar {
1202 position,
1203 overshoot,
1204 } => self.begin_columnar_selection(*position, *overshoot, cx),
1205 SelectPhase::Extend {
1206 position,
1207 click_count,
1208 } => self.extend_selection(*position, *click_count, cx),
1209 SelectPhase::Update {
1210 position,
1211 overshoot,
1212 scroll_position,
1213 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1214 SelectPhase::End => self.end_selection(cx),
1215 }
1216 }
1217
1218 fn extend_selection(
1219 &mut self,
1220 position: DisplayPoint,
1221 click_count: usize,
1222 cx: &mut ViewContext<Self>,
1223 ) {
1224 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1225 let tail = self
1226 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1227 .tail();
1228 self.begin_selection(position, false, click_count, cx);
1229
1230 let position = position.to_offset(&display_map, Bias::Left);
1231 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1232 let mut pending = self.pending_selection.clone().unwrap();
1233
1234 if position >= tail {
1235 pending.selection.start = tail_anchor.clone();
1236 } else {
1237 pending.selection.end = tail_anchor.clone();
1238 pending.selection.reversed = true;
1239 }
1240
1241 match &mut pending.mode {
1242 SelectMode::Word(range) | SelectMode::Line(range) => {
1243 *range = tail_anchor.clone()..tail_anchor
1244 }
1245 _ => {}
1246 }
1247
1248 self.set_selections(self.selections.clone(), Some(pending), cx);
1249 }
1250
1251 fn begin_selection(
1252 &mut self,
1253 position: DisplayPoint,
1254 add: bool,
1255 click_count: usize,
1256 cx: &mut ViewContext<Self>,
1257 ) {
1258 if !self.focused {
1259 cx.focus_self();
1260 cx.emit(Event::Activate);
1261 }
1262
1263 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1264 let buffer = &display_map.buffer_snapshot;
1265 let newest_selection = self.newest_anchor_selection().clone();
1266
1267 let start;
1268 let end;
1269 let mode;
1270 match click_count {
1271 1 => {
1272 start = buffer.anchor_before(position.to_point(&display_map));
1273 end = start.clone();
1274 mode = SelectMode::Character;
1275 }
1276 2 => {
1277 let range = movement::surrounding_word(&display_map, position);
1278 start = buffer.anchor_before(range.start.to_point(&display_map));
1279 end = buffer.anchor_before(range.end.to_point(&display_map));
1280 mode = SelectMode::Word(start.clone()..end.clone());
1281 }
1282 3 => {
1283 let position = display_map
1284 .clip_point(position, Bias::Left)
1285 .to_point(&display_map);
1286 let line_start = display_map.prev_line_boundary(position).0;
1287 let next_line_start = buffer.clip_point(
1288 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1289 Bias::Left,
1290 );
1291 start = buffer.anchor_before(line_start);
1292 end = buffer.anchor_before(next_line_start);
1293 mode = SelectMode::Line(start.clone()..end.clone());
1294 }
1295 _ => {
1296 start = buffer.anchor_before(0);
1297 end = buffer.anchor_before(buffer.len());
1298 mode = SelectMode::All;
1299 }
1300 }
1301
1302 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1303
1304 let selection = Selection {
1305 id: post_inc(&mut self.next_selection_id),
1306 start,
1307 end,
1308 reversed: false,
1309 goal: SelectionGoal::None,
1310 };
1311
1312 let mut selections;
1313 if add {
1314 selections = self.selections.clone();
1315 // Remove the newest selection if it was added due to a previous mouse up
1316 // within this multi-click.
1317 if click_count > 1 {
1318 selections = self
1319 .selections
1320 .iter()
1321 .filter(|selection| selection.id != newest_selection.id)
1322 .cloned()
1323 .collect();
1324 }
1325 } else {
1326 selections = Arc::from([]);
1327 }
1328 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1329
1330 cx.notify();
1331 }
1332
1333 fn begin_columnar_selection(
1334 &mut self,
1335 position: DisplayPoint,
1336 overshoot: u32,
1337 cx: &mut ViewContext<Self>,
1338 ) {
1339 if !self.focused {
1340 cx.focus_self();
1341 cx.emit(Event::Activate);
1342 }
1343
1344 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1345 let tail = self
1346 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1347 .tail();
1348 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1349
1350 self.select_columns(
1351 tail.to_display_point(&display_map),
1352 position,
1353 overshoot,
1354 &display_map,
1355 cx,
1356 );
1357 }
1358
1359 fn update_selection(
1360 &mut self,
1361 position: DisplayPoint,
1362 overshoot: u32,
1363 scroll_position: Vector2F,
1364 cx: &mut ViewContext<Self>,
1365 ) {
1366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1367
1368 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1369 let tail = tail.to_display_point(&display_map);
1370 self.select_columns(tail, position, overshoot, &display_map, cx);
1371 } else if let Some(mut pending) = self.pending_selection.clone() {
1372 let buffer = self.buffer.read(cx).snapshot(cx);
1373 let head;
1374 let tail;
1375 match &pending.mode {
1376 SelectMode::Character => {
1377 head = position.to_point(&display_map);
1378 tail = pending.selection.tail().to_point(&buffer);
1379 }
1380 SelectMode::Word(original_range) => {
1381 let original_display_range = original_range.start.to_display_point(&display_map)
1382 ..original_range.end.to_display_point(&display_map);
1383 let original_buffer_range = original_display_range.start.to_point(&display_map)
1384 ..original_display_range.end.to_point(&display_map);
1385 if movement::is_inside_word(&display_map, position)
1386 || original_display_range.contains(&position)
1387 {
1388 let word_range = movement::surrounding_word(&display_map, position);
1389 if word_range.start < original_display_range.start {
1390 head = word_range.start.to_point(&display_map);
1391 } else {
1392 head = word_range.end.to_point(&display_map);
1393 }
1394 } else {
1395 head = position.to_point(&display_map);
1396 }
1397
1398 if head <= original_buffer_range.start {
1399 tail = original_buffer_range.end;
1400 } else {
1401 tail = original_buffer_range.start;
1402 }
1403 }
1404 SelectMode::Line(original_range) => {
1405 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1406
1407 let position = display_map
1408 .clip_point(position, Bias::Left)
1409 .to_point(&display_map);
1410 let line_start = display_map.prev_line_boundary(position).0;
1411 let next_line_start = buffer.clip_point(
1412 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1413 Bias::Left,
1414 );
1415
1416 if line_start < original_range.start {
1417 head = line_start
1418 } else {
1419 head = next_line_start
1420 }
1421
1422 if head <= original_range.start {
1423 tail = original_range.end;
1424 } else {
1425 tail = original_range.start;
1426 }
1427 }
1428 SelectMode::All => {
1429 return;
1430 }
1431 };
1432
1433 if head < tail {
1434 pending.selection.start = buffer.anchor_before(head);
1435 pending.selection.end = buffer.anchor_before(tail);
1436 pending.selection.reversed = true;
1437 } else {
1438 pending.selection.start = buffer.anchor_before(tail);
1439 pending.selection.end = buffer.anchor_before(head);
1440 pending.selection.reversed = false;
1441 }
1442 self.set_selections(self.selections.clone(), Some(pending), cx);
1443 } else {
1444 log::error!("update_selection dispatched with no pending selection");
1445 return;
1446 }
1447
1448 self.set_scroll_position(scroll_position, cx);
1449 cx.notify();
1450 }
1451
1452 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1453 self.columnar_selection_tail.take();
1454 if self.pending_selection.is_some() {
1455 let selections = self.local_selections::<usize>(cx);
1456 self.update_selections(selections, None, cx);
1457 }
1458 }
1459
1460 fn select_columns(
1461 &mut self,
1462 tail: DisplayPoint,
1463 head: DisplayPoint,
1464 overshoot: u32,
1465 display_map: &DisplaySnapshot,
1466 cx: &mut ViewContext<Self>,
1467 ) {
1468 let start_row = cmp::min(tail.row(), head.row());
1469 let end_row = cmp::max(tail.row(), head.row());
1470 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1471 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1472 let reversed = start_column < tail.column();
1473
1474 let selections = (start_row..=end_row)
1475 .filter_map(|row| {
1476 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1477 let start = display_map
1478 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1479 .to_point(&display_map);
1480 let end = display_map
1481 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1482 .to_point(&display_map);
1483 Some(Selection {
1484 id: post_inc(&mut self.next_selection_id),
1485 start,
1486 end,
1487 reversed,
1488 goal: SelectionGoal::None,
1489 })
1490 } else {
1491 None
1492 }
1493 })
1494 .collect::<Vec<_>>();
1495
1496 self.update_selections(selections, None, cx);
1497 cx.notify();
1498 }
1499
1500 pub fn is_selecting(&self) -> bool {
1501 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1502 }
1503
1504 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1505 if self.take_rename(false, cx).is_some() {
1506 return;
1507 }
1508
1509 if self.hide_context_menu(cx).is_some() {
1510 return;
1511 }
1512
1513 if self.snippet_stack.pop().is_some() {
1514 return;
1515 }
1516
1517 if self.mode != EditorMode::Full {
1518 cx.propagate_action();
1519 return;
1520 }
1521
1522 if self.active_diagnostics.is_some() {
1523 self.dismiss_diagnostics(cx);
1524 } else if let Some(pending) = self.pending_selection.clone() {
1525 let mut selections = self.selections.clone();
1526 if selections.is_empty() {
1527 selections = Arc::from([pending.selection]);
1528 }
1529 self.set_selections(selections, None, cx);
1530 self.request_autoscroll(Autoscroll::Fit, cx);
1531 } else {
1532 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1533 if self.selection_count() == 1 {
1534 if oldest_selection.is_empty() {
1535 cx.propagate_action();
1536 return;
1537 }
1538
1539 oldest_selection.start = oldest_selection.head().clone();
1540 oldest_selection.end = oldest_selection.head().clone();
1541 }
1542 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1543 }
1544 }
1545
1546 #[cfg(any(test, feature = "test-support"))]
1547 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1548 &self,
1549 cx: &mut MutableAppContext,
1550 ) -> Vec<Range<D>> {
1551 self.local_selections::<D>(cx)
1552 .iter()
1553 .map(|s| {
1554 if s.reversed {
1555 s.end.clone()..s.start.clone()
1556 } else {
1557 s.start.clone()..s.end.clone()
1558 }
1559 })
1560 .collect()
1561 }
1562
1563 #[cfg(any(test, feature = "test-support"))]
1564 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1565 let display_map = self
1566 .display_map
1567 .update(cx, |display_map, cx| display_map.snapshot(cx));
1568 self.selections
1569 .iter()
1570 .chain(
1571 self.pending_selection
1572 .as_ref()
1573 .map(|pending| &pending.selection),
1574 )
1575 .map(|s| {
1576 if s.reversed {
1577 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1578 } else {
1579 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1580 }
1581 })
1582 .collect()
1583 }
1584
1585 pub fn select_ranges<I, T>(
1586 &mut self,
1587 ranges: I,
1588 autoscroll: Option<Autoscroll>,
1589 cx: &mut ViewContext<Self>,
1590 ) where
1591 I: IntoIterator<Item = Range<T>>,
1592 T: ToOffset,
1593 {
1594 let buffer = self.buffer.read(cx).snapshot(cx);
1595 let selections = ranges
1596 .into_iter()
1597 .map(|range| {
1598 let mut start = range.start.to_offset(&buffer);
1599 let mut end = range.end.to_offset(&buffer);
1600 let reversed = if start > end {
1601 mem::swap(&mut start, &mut end);
1602 true
1603 } else {
1604 false
1605 };
1606 Selection {
1607 id: post_inc(&mut self.next_selection_id),
1608 start,
1609 end,
1610 reversed,
1611 goal: SelectionGoal::None,
1612 }
1613 })
1614 .collect::<Vec<_>>();
1615 self.update_selections(selections, autoscroll, cx);
1616 }
1617
1618 #[cfg(any(test, feature = "test-support"))]
1619 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1620 where
1621 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1622 {
1623 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1624 let selections = ranges
1625 .into_iter()
1626 .map(|range| {
1627 let mut start = range.start;
1628 let mut end = range.end;
1629 let reversed = if start > end {
1630 mem::swap(&mut start, &mut end);
1631 true
1632 } else {
1633 false
1634 };
1635 Selection {
1636 id: post_inc(&mut self.next_selection_id),
1637 start: start.to_point(&display_map),
1638 end: end.to_point(&display_map),
1639 reversed,
1640 goal: SelectionGoal::None,
1641 }
1642 })
1643 .collect();
1644 self.update_selections(selections, None, cx);
1645 }
1646
1647 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1648 let text = action.0.as_ref();
1649 if !self.skip_autoclose_end(text, cx) {
1650 self.start_transaction(cx);
1651 if !self.surround_with_bracket_pair(text, cx) {
1652 self.insert(text, cx);
1653 self.autoclose_bracket_pairs(cx);
1654 }
1655 self.end_transaction(cx);
1656 self.trigger_completion_on_input(text, cx);
1657 }
1658 }
1659
1660 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1661 self.start_transaction(cx);
1662 let mut old_selections = SmallVec::<[_; 32]>::new();
1663 {
1664 let selections = self.local_selections::<usize>(cx);
1665 let buffer = self.buffer.read(cx).snapshot(cx);
1666 for selection in selections.iter() {
1667 let start_point = selection.start.to_point(&buffer);
1668 let indent = buffer
1669 .indent_column_for_line(start_point.row)
1670 .min(start_point.column);
1671 let start = selection.start;
1672 let end = selection.end;
1673
1674 let mut insert_extra_newline = false;
1675 if let Some(language) = buffer.language() {
1676 let leading_whitespace_len = buffer
1677 .reversed_chars_at(start)
1678 .take_while(|c| c.is_whitespace() && *c != '\n')
1679 .map(|c| c.len_utf8())
1680 .sum::<usize>();
1681
1682 let trailing_whitespace_len = buffer
1683 .chars_at(end)
1684 .take_while(|c| c.is_whitespace() && *c != '\n')
1685 .map(|c| c.len_utf8())
1686 .sum::<usize>();
1687
1688 insert_extra_newline = language.brackets().iter().any(|pair| {
1689 let pair_start = pair.start.trim_end();
1690 let pair_end = pair.end.trim_start();
1691
1692 pair.newline
1693 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1694 && buffer.contains_str_at(
1695 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1696 pair_start,
1697 )
1698 });
1699 }
1700
1701 old_selections.push((
1702 selection.id,
1703 buffer.anchor_after(end),
1704 start..end,
1705 indent,
1706 insert_extra_newline,
1707 ));
1708 }
1709 }
1710
1711 self.buffer.update(cx, |buffer, cx| {
1712 let mut delta = 0_isize;
1713 let mut pending_edit: Option<PendingEdit> = None;
1714 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1715 if pending_edit.as_ref().map_or(false, |pending| {
1716 pending.indent != *indent
1717 || pending.insert_extra_newline != *insert_extra_newline
1718 }) {
1719 let pending = pending_edit.take().unwrap();
1720 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1721 new_text.push('\n');
1722 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1723 if pending.insert_extra_newline {
1724 new_text = new_text.repeat(2);
1725 }
1726 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1727 delta += pending.delta;
1728 }
1729
1730 let start = (range.start as isize + delta) as usize;
1731 let end = (range.end as isize + delta) as usize;
1732 let mut text_len = *indent as usize + 1;
1733 if *insert_extra_newline {
1734 text_len *= 2;
1735 }
1736
1737 let pending = pending_edit.get_or_insert_with(Default::default);
1738 pending.delta += text_len as isize - (end - start) as isize;
1739 pending.indent = *indent;
1740 pending.insert_extra_newline = *insert_extra_newline;
1741 pending.ranges.push(start..end);
1742 }
1743
1744 let pending = pending_edit.unwrap();
1745 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1746 new_text.push('\n');
1747 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1748 if pending.insert_extra_newline {
1749 new_text = new_text.repeat(2);
1750 }
1751 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1752
1753 let buffer = buffer.read(cx);
1754 self.selections = self
1755 .selections
1756 .iter()
1757 .cloned()
1758 .zip(old_selections)
1759 .map(
1760 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1761 let mut cursor = end_anchor.to_point(&buffer);
1762 if insert_extra_newline {
1763 cursor.row -= 1;
1764 cursor.column = buffer.line_len(cursor.row);
1765 }
1766 let anchor = buffer.anchor_after(cursor);
1767 new_selection.start = anchor.clone();
1768 new_selection.end = anchor;
1769 new_selection
1770 },
1771 )
1772 .collect();
1773 });
1774
1775 self.request_autoscroll(Autoscroll::Fit, cx);
1776 self.end_transaction(cx);
1777
1778 #[derive(Default)]
1779 struct PendingEdit {
1780 indent: u32,
1781 insert_extra_newline: bool,
1782 delta: isize,
1783 ranges: SmallVec<[Range<usize>; 32]>,
1784 }
1785 }
1786
1787 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1788 self.start_transaction(cx);
1789
1790 let old_selections = self.local_selections::<usize>(cx);
1791 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1792 let anchors = {
1793 let snapshot = buffer.read(cx);
1794 old_selections
1795 .iter()
1796 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1797 .collect::<Vec<_>>()
1798 };
1799 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1800 buffer.edit_with_autoindent(edit_ranges, text, cx);
1801 anchors
1802 });
1803
1804 let selections = {
1805 let snapshot = self.buffer.read(cx).read(cx);
1806 selection_anchors
1807 .into_iter()
1808 .map(|(id, goal, position)| {
1809 let position = position.to_offset(&snapshot);
1810 Selection {
1811 id,
1812 start: position,
1813 end: position,
1814 goal,
1815 reversed: false,
1816 }
1817 })
1818 .collect()
1819 };
1820 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1821 self.end_transaction(cx);
1822 }
1823
1824 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1825 let selection = self.newest_anchor_selection();
1826 if self
1827 .buffer
1828 .read(cx)
1829 .is_completion_trigger(selection.head(), text, cx)
1830 {
1831 self.show_completions(&ShowCompletions, cx);
1832 } else {
1833 self.hide_context_menu(cx);
1834 }
1835 }
1836
1837 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1838 let snapshot = self.buffer.read(cx).snapshot(cx);
1839 if let Some(pair) = snapshot
1840 .language()
1841 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1842 .cloned()
1843 {
1844 if self
1845 .local_selections::<usize>(cx)
1846 .iter()
1847 .any(|selection| selection.is_empty())
1848 {
1849 false
1850 } else {
1851 let mut selections = self.selections.to_vec();
1852 for selection in &mut selections {
1853 selection.end = selection.end.bias_left(&snapshot);
1854 }
1855 drop(snapshot);
1856
1857 self.buffer.update(cx, |buffer, cx| {
1858 buffer.edit(
1859 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1860 &pair.start,
1861 cx,
1862 );
1863 buffer.edit(
1864 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1865 &pair.end,
1866 cx,
1867 );
1868 });
1869
1870 let snapshot = self.buffer.read(cx).read(cx);
1871 for selection in &mut selections {
1872 selection.end = selection.end.bias_right(&snapshot);
1873 }
1874 drop(snapshot);
1875
1876 self.set_selections(selections.into(), None, cx);
1877 true
1878 }
1879 } else {
1880 false
1881 }
1882 }
1883
1884 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1885 let selections = self.local_selections::<usize>(cx);
1886 let mut bracket_pair_state = None;
1887 let mut new_selections = None;
1888 self.buffer.update(cx, |buffer, cx| {
1889 let mut snapshot = buffer.snapshot(cx);
1890 let left_biased_selections = selections
1891 .iter()
1892 .map(|selection| Selection {
1893 id: selection.id,
1894 start: snapshot.anchor_before(selection.start),
1895 end: snapshot.anchor_before(selection.end),
1896 reversed: selection.reversed,
1897 goal: selection.goal,
1898 })
1899 .collect::<Vec<_>>();
1900
1901 let autoclose_pair = snapshot.language().and_then(|language| {
1902 let first_selection_start = selections.first().unwrap().start;
1903 let pair = language.brackets().iter().find(|pair| {
1904 snapshot.contains_str_at(
1905 first_selection_start.saturating_sub(pair.start.len()),
1906 &pair.start,
1907 )
1908 });
1909 pair.and_then(|pair| {
1910 let should_autoclose = selections.iter().all(|selection| {
1911 // Ensure all selections are parked at the end of a pair start.
1912 if snapshot.contains_str_at(
1913 selection.start.saturating_sub(pair.start.len()),
1914 &pair.start,
1915 ) {
1916 snapshot
1917 .chars_at(selection.start)
1918 .next()
1919 .map_or(true, |c| language.should_autoclose_before(c))
1920 } else {
1921 false
1922 }
1923 });
1924
1925 if should_autoclose {
1926 Some(pair.clone())
1927 } else {
1928 None
1929 }
1930 })
1931 });
1932
1933 if let Some(pair) = autoclose_pair {
1934 let selection_ranges = selections
1935 .iter()
1936 .map(|selection| {
1937 let start = selection.start.to_offset(&snapshot);
1938 start..start
1939 })
1940 .collect::<SmallVec<[_; 32]>>();
1941
1942 buffer.edit(selection_ranges, &pair.end, cx);
1943 snapshot = buffer.snapshot(cx);
1944
1945 new_selections = Some(
1946 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1947 .collect::<Vec<_>>(),
1948 );
1949
1950 if pair.end.len() == 1 {
1951 let mut delta = 0;
1952 bracket_pair_state = Some(BracketPairState {
1953 ranges: selections
1954 .iter()
1955 .map(move |selection| {
1956 let offset = selection.start + delta;
1957 delta += 1;
1958 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1959 })
1960 .collect(),
1961 pair,
1962 });
1963 }
1964 }
1965 });
1966
1967 if let Some(new_selections) = new_selections {
1968 self.update_selections(new_selections, None, cx);
1969 }
1970 if let Some(bracket_pair_state) = bracket_pair_state {
1971 self.autoclose_stack.push(bracket_pair_state);
1972 }
1973 }
1974
1975 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1976 let old_selections = self.local_selections::<usize>(cx);
1977 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1978 autoclose_pair
1979 } else {
1980 return false;
1981 };
1982 if text != autoclose_pair.pair.end {
1983 return false;
1984 }
1985
1986 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1987
1988 let buffer = self.buffer.read(cx).snapshot(cx);
1989 if old_selections
1990 .iter()
1991 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1992 .all(|(selection, autoclose_range)| {
1993 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1994 selection.is_empty() && selection.start == autoclose_range_end
1995 })
1996 {
1997 let new_selections = old_selections
1998 .into_iter()
1999 .map(|selection| {
2000 let cursor = selection.start + 1;
2001 Selection {
2002 id: selection.id,
2003 start: cursor,
2004 end: cursor,
2005 reversed: false,
2006 goal: SelectionGoal::None,
2007 }
2008 })
2009 .collect();
2010 self.autoclose_stack.pop();
2011 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2012 true
2013 } else {
2014 false
2015 }
2016 }
2017
2018 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2019 let offset = position.to_offset(buffer);
2020 let (word_range, kind) = buffer.surrounding_word(offset);
2021 if offset > word_range.start && kind == Some(CharKind::Word) {
2022 Some(
2023 buffer
2024 .text_for_range(word_range.start..offset)
2025 .collect::<String>(),
2026 )
2027 } else {
2028 None
2029 }
2030 }
2031
2032 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2033 if self.pending_rename.is_some() {
2034 return;
2035 }
2036
2037 let project = if let Some(project) = self.project.clone() {
2038 project
2039 } else {
2040 return;
2041 };
2042
2043 let position = self.newest_anchor_selection().head();
2044 let (buffer, buffer_position) = if let Some(output) = self
2045 .buffer
2046 .read(cx)
2047 .text_anchor_for_position(position.clone(), cx)
2048 {
2049 output
2050 } else {
2051 return;
2052 };
2053
2054 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2055 let completions = project.update(cx, |project, cx| {
2056 project.completions(&buffer, buffer_position.clone(), cx)
2057 });
2058
2059 let id = post_inc(&mut self.next_completion_id);
2060 let task = cx.spawn_weak(|this, mut cx| {
2061 async move {
2062 let completions = completions.await?;
2063 if completions.is_empty() {
2064 return Ok(());
2065 }
2066
2067 let mut menu = CompletionsMenu {
2068 id,
2069 initial_position: position,
2070 match_candidates: completions
2071 .iter()
2072 .enumerate()
2073 .map(|(id, completion)| {
2074 StringMatchCandidate::new(
2075 id,
2076 completion.label.text[completion.label.filter_range.clone()].into(),
2077 )
2078 })
2079 .collect(),
2080 buffer,
2081 completions: completions.into(),
2082 matches: Vec::new().into(),
2083 selected_item: 0,
2084 list: Default::default(),
2085 };
2086
2087 menu.filter(query.as_deref(), cx.background()).await;
2088
2089 if let Some(this) = this.upgrade(&cx) {
2090 this.update(&mut cx, |this, cx| {
2091 match this.context_menu.as_ref() {
2092 None => {}
2093 Some(ContextMenu::Completions(prev_menu)) => {
2094 if prev_menu.id > menu.id {
2095 return;
2096 }
2097 }
2098 _ => return,
2099 }
2100
2101 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2102 if this.focused {
2103 this.show_context_menu(ContextMenu::Completions(menu), cx);
2104 }
2105
2106 cx.notify();
2107 });
2108 }
2109 Ok::<_, anyhow::Error>(())
2110 }
2111 .log_err()
2112 });
2113 self.completion_tasks.push((id, task));
2114 }
2115
2116 pub fn confirm_completion(
2117 &mut self,
2118 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2119 cx: &mut ViewContext<Self>,
2120 ) -> Option<Task<Result<()>>> {
2121 use language::ToOffset as _;
2122
2123 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2124 menu
2125 } else {
2126 return None;
2127 };
2128
2129 let mat = completions_menu
2130 .matches
2131 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2132 let buffer_handle = completions_menu.buffer;
2133 let completion = completions_menu.completions.get(mat.candidate_id)?;
2134
2135 let snippet;
2136 let text;
2137 if completion.is_snippet() {
2138 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2139 text = snippet.as_ref().unwrap().text.clone();
2140 } else {
2141 snippet = None;
2142 text = completion.new_text.clone();
2143 };
2144 let buffer = buffer_handle.read(cx);
2145 let old_range = completion.old_range.to_offset(&buffer);
2146 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2147
2148 let selections = self.local_selections::<usize>(cx);
2149 let newest_selection = self.newest_anchor_selection();
2150 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2151 return None;
2152 }
2153
2154 let lookbehind = newest_selection
2155 .start
2156 .text_anchor
2157 .to_offset(buffer)
2158 .saturating_sub(old_range.start);
2159 let lookahead = old_range
2160 .end
2161 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2162 let mut common_prefix_len = old_text
2163 .bytes()
2164 .zip(text.bytes())
2165 .take_while(|(a, b)| a == b)
2166 .count();
2167
2168 let snapshot = self.buffer.read(cx).snapshot(cx);
2169 let mut ranges = Vec::new();
2170 for selection in &selections {
2171 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2172 let start = selection.start.saturating_sub(lookbehind);
2173 let end = selection.end + lookahead;
2174 ranges.push(start + common_prefix_len..end);
2175 } else {
2176 common_prefix_len = 0;
2177 ranges.clear();
2178 ranges.extend(selections.iter().map(|s| {
2179 if s.id == newest_selection.id {
2180 old_range.clone()
2181 } else {
2182 s.start..s.end
2183 }
2184 }));
2185 break;
2186 }
2187 }
2188 let text = &text[common_prefix_len..];
2189
2190 self.start_transaction(cx);
2191 if let Some(mut snippet) = snippet {
2192 snippet.text = text.to_string();
2193 for tabstop in snippet.tabstops.iter_mut().flatten() {
2194 tabstop.start -= common_prefix_len as isize;
2195 tabstop.end -= common_prefix_len as isize;
2196 }
2197
2198 self.insert_snippet(&ranges, snippet, cx).log_err();
2199 } else {
2200 self.buffer.update(cx, |buffer, cx| {
2201 buffer.edit_with_autoindent(ranges, text, cx);
2202 });
2203 }
2204 self.end_transaction(cx);
2205
2206 let project = self.project.clone()?;
2207 let apply_edits = project.update(cx, |project, cx| {
2208 project.apply_additional_edits_for_completion(
2209 buffer_handle,
2210 completion.clone(),
2211 true,
2212 cx,
2213 )
2214 });
2215 Some(cx.foreground().spawn(async move {
2216 apply_edits.await?;
2217 Ok(())
2218 }))
2219 }
2220
2221 pub fn toggle_code_actions(
2222 &mut self,
2223 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2224 cx: &mut ViewContext<Self>,
2225 ) {
2226 if matches!(
2227 self.context_menu.as_ref(),
2228 Some(ContextMenu::CodeActions(_))
2229 ) {
2230 self.context_menu.take();
2231 cx.notify();
2232 return;
2233 }
2234
2235 let mut task = self.code_actions_task.take();
2236 cx.spawn_weak(|this, mut cx| async move {
2237 while let Some(prev_task) = task {
2238 prev_task.await;
2239 task = this
2240 .upgrade(&cx)
2241 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2242 }
2243
2244 if let Some(this) = this.upgrade(&cx) {
2245 this.update(&mut cx, |this, cx| {
2246 if this.focused {
2247 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2248 this.show_context_menu(
2249 ContextMenu::CodeActions(CodeActionsMenu {
2250 buffer,
2251 actions,
2252 selected_item: Default::default(),
2253 list: Default::default(),
2254 deployed_from_indicator,
2255 }),
2256 cx,
2257 );
2258 }
2259 }
2260 })
2261 }
2262 Ok::<_, anyhow::Error>(())
2263 })
2264 .detach_and_log_err(cx);
2265 }
2266
2267 pub fn confirm_code_action(
2268 workspace: &mut Workspace,
2269 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2270 cx: &mut ViewContext<Workspace>,
2271 ) -> Option<Task<Result<()>>> {
2272 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2273 let actions_menu = if let ContextMenu::CodeActions(menu) =
2274 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2275 {
2276 menu
2277 } else {
2278 return None;
2279 };
2280 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2281 let action = actions_menu.actions.get(action_ix)?.clone();
2282 let title = action.lsp_action.title.clone();
2283 let buffer = actions_menu.buffer;
2284
2285 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2286 project.apply_code_action(buffer, action, true, cx)
2287 });
2288 Some(cx.spawn(|workspace, cx| async move {
2289 let project_transaction = apply_code_actions.await?;
2290 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2291 }))
2292 }
2293
2294 async fn open_project_transaction(
2295 this: ViewHandle<Editor>,
2296 workspace: ViewHandle<Workspace>,
2297 transaction: ProjectTransaction,
2298 title: String,
2299 mut cx: AsyncAppContext,
2300 ) -> Result<()> {
2301 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2302
2303 // If the code action's edits are all contained within this editor, then
2304 // avoid opening a new editor to display them.
2305 let mut entries = transaction.0.iter();
2306 if let Some((buffer, transaction)) = entries.next() {
2307 if entries.next().is_none() {
2308 let excerpt = this.read_with(&cx, |editor, cx| {
2309 editor
2310 .buffer()
2311 .read(cx)
2312 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2313 });
2314 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2315 if excerpted_buffer == *buffer {
2316 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2317 let excerpt_range = excerpt_range.to_offset(&snapshot);
2318 if snapshot
2319 .edited_ranges_for_transaction(transaction)
2320 .all(|range| {
2321 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2322 })
2323 {
2324 return Ok(());
2325 }
2326 }
2327 }
2328 }
2329 }
2330
2331 let mut ranges_to_highlight = Vec::new();
2332 let excerpt_buffer = cx.add_model(|cx| {
2333 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2334 for (buffer, transaction) in &transaction.0 {
2335 let snapshot = buffer.read(cx).snapshot();
2336 ranges_to_highlight.extend(
2337 multibuffer.push_excerpts_with_context_lines(
2338 buffer.clone(),
2339 snapshot
2340 .edited_ranges_for_transaction::<usize>(transaction)
2341 .collect(),
2342 1,
2343 cx,
2344 ),
2345 );
2346 }
2347 multibuffer.push_transaction(&transaction.0);
2348 multibuffer
2349 });
2350
2351 workspace.update(&mut cx, |workspace, cx| {
2352 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
2353 if let Some(editor) = editor.act_as::<Self>(cx) {
2354 editor.update(cx, |editor, cx| {
2355 let color = editor.style(cx).highlighted_line_background;
2356 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2357 });
2358 }
2359 });
2360
2361 Ok(())
2362 }
2363
2364 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2365 let project = self.project.as_ref()?;
2366 let buffer = self.buffer.read(cx);
2367 let newest_selection = self.newest_anchor_selection().clone();
2368 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2369 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2370 if start_buffer != end_buffer {
2371 return None;
2372 }
2373
2374 let actions = project.update(cx, |project, cx| {
2375 project.code_actions(&start_buffer, start..end, cx)
2376 });
2377 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2378 let actions = actions.await;
2379 if let Some(this) = this.upgrade(&cx) {
2380 this.update(&mut cx, |this, cx| {
2381 this.available_code_actions = actions.log_err().and_then(|actions| {
2382 if actions.is_empty() {
2383 None
2384 } else {
2385 Some((start_buffer, actions.into()))
2386 }
2387 });
2388 cx.notify();
2389 })
2390 }
2391 }));
2392 None
2393 }
2394
2395 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2396 if self.pending_rename.is_some() {
2397 return None;
2398 }
2399
2400 let project = self.project.as_ref()?;
2401 let buffer = self.buffer.read(cx);
2402 let newest_selection = self.newest_anchor_selection().clone();
2403 let cursor_position = newest_selection.head();
2404 let (cursor_buffer, cursor_buffer_position) =
2405 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2406 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2407 if cursor_buffer != tail_buffer {
2408 return None;
2409 }
2410
2411 let highlights = project.update(cx, |project, cx| {
2412 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2413 });
2414
2415 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2416 let highlights = highlights.log_err().await;
2417 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2418 this.update(&mut cx, |this, cx| {
2419 if this.pending_rename.is_some() {
2420 return;
2421 }
2422
2423 let buffer_id = cursor_position.buffer_id;
2424 let excerpt_id = cursor_position.excerpt_id.clone();
2425 let style = this.style(cx);
2426 let read_background = style.document_highlight_read_background;
2427 let write_background = style.document_highlight_write_background;
2428 let buffer = this.buffer.read(cx);
2429 if !buffer
2430 .text_anchor_for_position(cursor_position, cx)
2431 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2432 {
2433 return;
2434 }
2435
2436 let mut write_ranges = Vec::new();
2437 let mut read_ranges = Vec::new();
2438 for highlight in highlights {
2439 let range = Anchor {
2440 buffer_id,
2441 excerpt_id: excerpt_id.clone(),
2442 text_anchor: highlight.range.start,
2443 }..Anchor {
2444 buffer_id,
2445 excerpt_id: excerpt_id.clone(),
2446 text_anchor: highlight.range.end,
2447 };
2448 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2449 write_ranges.push(range);
2450 } else {
2451 read_ranges.push(range);
2452 }
2453 }
2454
2455 this.highlight_background::<DocumentHighlightRead>(
2456 read_ranges,
2457 read_background,
2458 cx,
2459 );
2460 this.highlight_background::<DocumentHighlightWrite>(
2461 write_ranges,
2462 write_background,
2463 cx,
2464 );
2465 cx.notify();
2466 });
2467 }
2468 }));
2469 None
2470 }
2471
2472 pub fn render_code_actions_indicator(
2473 &self,
2474 style: &EditorStyle,
2475 cx: &mut ViewContext<Self>,
2476 ) -> Option<ElementBox> {
2477 if self.available_code_actions.is_some() {
2478 enum Tag {}
2479 Some(
2480 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2481 Svg::new("icons/zap.svg")
2482 .with_color(style.code_actions_indicator)
2483 .boxed()
2484 })
2485 .with_cursor_style(CursorStyle::PointingHand)
2486 .with_padding(Padding::uniform(3.))
2487 .on_mouse_down(|cx| {
2488 cx.dispatch_action(ToggleCodeActions(true));
2489 })
2490 .boxed(),
2491 )
2492 } else {
2493 None
2494 }
2495 }
2496
2497 pub fn context_menu_visible(&self) -> bool {
2498 self.context_menu
2499 .as_ref()
2500 .map_or(false, |menu| menu.visible())
2501 }
2502
2503 pub fn render_context_menu(
2504 &self,
2505 cursor_position: DisplayPoint,
2506 style: EditorStyle,
2507 cx: &AppContext,
2508 ) -> Option<(DisplayPoint, ElementBox)> {
2509 self.context_menu
2510 .as_ref()
2511 .map(|menu| menu.render(cursor_position, style, cx))
2512 }
2513
2514 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2515 if !matches!(menu, ContextMenu::Completions(_)) {
2516 self.completion_tasks.clear();
2517 }
2518 self.context_menu = Some(menu);
2519 cx.notify();
2520 }
2521
2522 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2523 cx.notify();
2524 self.completion_tasks.clear();
2525 self.context_menu.take()
2526 }
2527
2528 pub fn insert_snippet(
2529 &mut self,
2530 insertion_ranges: &[Range<usize>],
2531 snippet: Snippet,
2532 cx: &mut ViewContext<Self>,
2533 ) -> Result<()> {
2534 let tabstops = self.buffer.update(cx, |buffer, cx| {
2535 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2536
2537 let snapshot = &*buffer.read(cx);
2538 let snippet = &snippet;
2539 snippet
2540 .tabstops
2541 .iter()
2542 .map(|tabstop| {
2543 let mut tabstop_ranges = tabstop
2544 .iter()
2545 .flat_map(|tabstop_range| {
2546 let mut delta = 0 as isize;
2547 insertion_ranges.iter().map(move |insertion_range| {
2548 let insertion_start = insertion_range.start as isize + delta;
2549 delta +=
2550 snippet.text.len() as isize - insertion_range.len() as isize;
2551
2552 let start = snapshot.anchor_before(
2553 (insertion_start + tabstop_range.start) as usize,
2554 );
2555 let end = snapshot
2556 .anchor_after((insertion_start + tabstop_range.end) as usize);
2557 start..end
2558 })
2559 })
2560 .collect::<Vec<_>>();
2561 tabstop_ranges
2562 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2563 tabstop_ranges
2564 })
2565 .collect::<Vec<_>>()
2566 });
2567
2568 if let Some(tabstop) = tabstops.first() {
2569 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2570 self.snippet_stack.push(SnippetState {
2571 active_index: 0,
2572 ranges: tabstops,
2573 });
2574 }
2575
2576 Ok(())
2577 }
2578
2579 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2580 self.move_to_snippet_tabstop(Bias::Right, cx)
2581 }
2582
2583 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2584 self.move_to_snippet_tabstop(Bias::Left, cx);
2585 }
2586
2587 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2588 let buffer = self.buffer.read(cx).snapshot(cx);
2589
2590 if let Some(snippet) = self.snippet_stack.last_mut() {
2591 match bias {
2592 Bias::Left => {
2593 if snippet.active_index > 0 {
2594 snippet.active_index -= 1;
2595 } else {
2596 return false;
2597 }
2598 }
2599 Bias::Right => {
2600 if snippet.active_index + 1 < snippet.ranges.len() {
2601 snippet.active_index += 1;
2602 } else {
2603 return false;
2604 }
2605 }
2606 }
2607 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2608 let new_selections = current_ranges
2609 .iter()
2610 .map(|new_range| {
2611 let new_range = new_range.to_offset(&buffer);
2612 Selection {
2613 id: post_inc(&mut self.next_selection_id),
2614 start: new_range.start,
2615 end: new_range.end,
2616 reversed: false,
2617 goal: SelectionGoal::None,
2618 }
2619 })
2620 .collect();
2621
2622 // Remove the snippet state when moving to the last tabstop.
2623 if snippet.active_index + 1 == snippet.ranges.len() {
2624 self.snippet_stack.pop();
2625 }
2626
2627 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2628 return true;
2629 }
2630 self.snippet_stack.pop();
2631 }
2632
2633 false
2634 }
2635
2636 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2637 self.start_transaction(cx);
2638 self.select_all(&SelectAll, cx);
2639 self.insert("", cx);
2640 self.end_transaction(cx);
2641 }
2642
2643 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2644 self.start_transaction(cx);
2645 let mut selections = self.local_selections::<Point>(cx);
2646 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2647 for selection in &mut selections {
2648 if selection.is_empty() {
2649 let old_head = selection.head();
2650 let mut new_head =
2651 movement::left(&display_map, old_head.to_display_point(&display_map))
2652 .unwrap()
2653 .to_point(&display_map);
2654 if let Some((buffer, line_buffer_range)) = display_map
2655 .buffer_snapshot
2656 .buffer_line_for_row(old_head.row)
2657 {
2658 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2659 if old_head.column <= indent_column && old_head.column > 0 {
2660 let indent = buffer.indent_size();
2661 new_head = cmp::min(
2662 new_head,
2663 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2664 );
2665 }
2666 }
2667
2668 selection.set_head(new_head);
2669 selection.goal = SelectionGoal::None;
2670 }
2671 }
2672 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2673 self.insert("", cx);
2674 self.end_transaction(cx);
2675 }
2676
2677 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2678 self.start_transaction(cx);
2679 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2680 let mut selections = self.local_selections::<Point>(cx);
2681 for selection in &mut selections {
2682 if selection.is_empty() {
2683 let head = selection.head().to_display_point(&display_map);
2684 let cursor = movement::right(&display_map, head)
2685 .unwrap()
2686 .to_point(&display_map);
2687 selection.set_head(cursor);
2688 selection.goal = SelectionGoal::None;
2689 }
2690 }
2691 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2692 self.insert(&"", cx);
2693 self.end_transaction(cx);
2694 }
2695
2696 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2697 if self.move_to_next_snippet_tabstop(cx) {
2698 return;
2699 }
2700
2701 self.start_transaction(cx);
2702 let tab_size = cx.app_state::<Settings>().tab_size;
2703 let mut selections = self.local_selections::<Point>(cx);
2704 let mut last_indent = None;
2705 self.buffer.update(cx, |buffer, cx| {
2706 for selection in &mut selections {
2707 if selection.is_empty() {
2708 let char_column = buffer
2709 .read(cx)
2710 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2711 .flat_map(str::chars)
2712 .count();
2713 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2714 buffer.edit(
2715 [selection.start..selection.start],
2716 " ".repeat(chars_to_next_tab_stop),
2717 cx,
2718 );
2719 selection.start.column += chars_to_next_tab_stop as u32;
2720 selection.end = selection.start;
2721 } else {
2722 let mut start_row = selection.start.row;
2723 let mut end_row = selection.end.row + 1;
2724
2725 // If a selection ends at the beginning of a line, don't indent
2726 // that last line.
2727 if selection.end.column == 0 {
2728 end_row -= 1;
2729 }
2730
2731 // Avoid re-indenting a row that has already been indented by a
2732 // previous selection, but still update this selection's column
2733 // to reflect that indentation.
2734 if let Some((last_indent_row, last_indent_len)) = last_indent {
2735 if last_indent_row == selection.start.row {
2736 selection.start.column += last_indent_len;
2737 start_row += 1;
2738 }
2739 if last_indent_row == selection.end.row {
2740 selection.end.column += last_indent_len;
2741 }
2742 }
2743
2744 for row in start_row..end_row {
2745 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2746 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2747 let row_start = Point::new(row, 0);
2748 buffer.edit(
2749 [row_start..row_start],
2750 " ".repeat(columns_to_next_tab_stop),
2751 cx,
2752 );
2753
2754 // Update this selection's endpoints to reflect the indentation.
2755 if row == selection.start.row {
2756 selection.start.column += columns_to_next_tab_stop as u32;
2757 }
2758 if row == selection.end.row {
2759 selection.end.column += columns_to_next_tab_stop as u32;
2760 }
2761
2762 last_indent = Some((row, columns_to_next_tab_stop as u32));
2763 }
2764 }
2765 }
2766 });
2767
2768 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2769 self.end_transaction(cx);
2770 }
2771
2772 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2773 if !self.snippet_stack.is_empty() {
2774 self.move_to_prev_snippet_tabstop(cx);
2775 return;
2776 }
2777
2778 self.start_transaction(cx);
2779 let tab_size = cx.app_state::<Settings>().tab_size;
2780 let selections = self.local_selections::<Point>(cx);
2781 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2782 let mut deletion_ranges = Vec::new();
2783 let mut last_outdent = None;
2784 {
2785 let buffer = self.buffer.read(cx).read(cx);
2786 for selection in &selections {
2787 let mut rows = selection.spanned_rows(false, &display_map);
2788
2789 // Avoid re-outdenting a row that has already been outdented by a
2790 // previous selection.
2791 if let Some(last_row) = last_outdent {
2792 if last_row == rows.start {
2793 rows.start += 1;
2794 }
2795 }
2796
2797 for row in rows {
2798 let column = buffer.indent_column_for_line(row) as usize;
2799 if column > 0 {
2800 let mut deletion_len = (column % tab_size) as u32;
2801 if deletion_len == 0 {
2802 deletion_len = tab_size as u32;
2803 }
2804 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2805 last_outdent = Some(row);
2806 }
2807 }
2808 }
2809 }
2810 self.buffer.update(cx, |buffer, cx| {
2811 buffer.edit(deletion_ranges, "", cx);
2812 });
2813
2814 self.update_selections(
2815 self.local_selections::<usize>(cx),
2816 Some(Autoscroll::Fit),
2817 cx,
2818 );
2819 self.end_transaction(cx);
2820 }
2821
2822 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2823 self.start_transaction(cx);
2824
2825 let selections = self.local_selections::<Point>(cx);
2826 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2827 let buffer = self.buffer.read(cx).snapshot(cx);
2828
2829 let mut new_cursors = Vec::new();
2830 let mut edit_ranges = Vec::new();
2831 let mut selections = selections.iter().peekable();
2832 while let Some(selection) = selections.next() {
2833 let mut rows = selection.spanned_rows(false, &display_map);
2834 let goal_display_column = selection.head().to_display_point(&display_map).column();
2835
2836 // Accumulate contiguous regions of rows that we want to delete.
2837 while let Some(next_selection) = selections.peek() {
2838 let next_rows = next_selection.spanned_rows(false, &display_map);
2839 if next_rows.start <= rows.end {
2840 rows.end = next_rows.end;
2841 selections.next().unwrap();
2842 } else {
2843 break;
2844 }
2845 }
2846
2847 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2848 let edit_end;
2849 let cursor_buffer_row;
2850 if buffer.max_point().row >= rows.end {
2851 // If there's a line after the range, delete the \n from the end of the row range
2852 // and position the cursor on the next line.
2853 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2854 cursor_buffer_row = rows.end;
2855 } else {
2856 // If there isn't a line after the range, delete the \n from the line before the
2857 // start of the row range and position the cursor there.
2858 edit_start = edit_start.saturating_sub(1);
2859 edit_end = buffer.len();
2860 cursor_buffer_row = rows.start.saturating_sub(1);
2861 }
2862
2863 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2864 *cursor.column_mut() =
2865 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2866
2867 new_cursors.push((
2868 selection.id,
2869 buffer.anchor_after(cursor.to_point(&display_map)),
2870 ));
2871 edit_ranges.push(edit_start..edit_end);
2872 }
2873
2874 let buffer = self.buffer.update(cx, |buffer, cx| {
2875 buffer.edit(edit_ranges, "", cx);
2876 buffer.snapshot(cx)
2877 });
2878 let new_selections = new_cursors
2879 .into_iter()
2880 .map(|(id, cursor)| {
2881 let cursor = cursor.to_point(&buffer);
2882 Selection {
2883 id,
2884 start: cursor,
2885 end: cursor,
2886 reversed: false,
2887 goal: SelectionGoal::None,
2888 }
2889 })
2890 .collect();
2891 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2892 self.end_transaction(cx);
2893 }
2894
2895 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2896 self.start_transaction(cx);
2897
2898 let selections = self.local_selections::<Point>(cx);
2899 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2900 let buffer = &display_map.buffer_snapshot;
2901
2902 let mut edits = Vec::new();
2903 let mut selections_iter = selections.iter().peekable();
2904 while let Some(selection) = selections_iter.next() {
2905 // Avoid duplicating the same lines twice.
2906 let mut rows = selection.spanned_rows(false, &display_map);
2907
2908 while let Some(next_selection) = selections_iter.peek() {
2909 let next_rows = next_selection.spanned_rows(false, &display_map);
2910 if next_rows.start <= rows.end - 1 {
2911 rows.end = next_rows.end;
2912 selections_iter.next().unwrap();
2913 } else {
2914 break;
2915 }
2916 }
2917
2918 // Copy the text from the selected row region and splice it at the start of the region.
2919 let start = Point::new(rows.start, 0);
2920 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2921 let text = buffer
2922 .text_for_range(start..end)
2923 .chain(Some("\n"))
2924 .collect::<String>();
2925 edits.push((start, text, rows.len() as u32));
2926 }
2927
2928 self.buffer.update(cx, |buffer, cx| {
2929 for (point, text, _) in edits.into_iter().rev() {
2930 buffer.edit(Some(point..point), text, cx);
2931 }
2932 });
2933
2934 self.request_autoscroll(Autoscroll::Fit, cx);
2935 self.end_transaction(cx);
2936 }
2937
2938 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2939 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2940 let buffer = self.buffer.read(cx).snapshot(cx);
2941
2942 let mut edits = Vec::new();
2943 let mut unfold_ranges = Vec::new();
2944 let mut refold_ranges = Vec::new();
2945
2946 let selections = self.local_selections::<Point>(cx);
2947 let mut selections = selections.iter().peekable();
2948 let mut contiguous_row_selections = Vec::new();
2949 let mut new_selections = Vec::new();
2950
2951 while let Some(selection) = selections.next() {
2952 // Find all the selections that span a contiguous row range
2953 contiguous_row_selections.push(selection.clone());
2954 let start_row = selection.start.row;
2955 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2956 display_map.next_line_boundary(selection.end).0.row + 1
2957 } else {
2958 selection.end.row
2959 };
2960
2961 while let Some(next_selection) = selections.peek() {
2962 if next_selection.start.row <= end_row {
2963 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2964 display_map.next_line_boundary(next_selection.end).0.row + 1
2965 } else {
2966 next_selection.end.row
2967 };
2968 contiguous_row_selections.push(selections.next().unwrap().clone());
2969 } else {
2970 break;
2971 }
2972 }
2973
2974 // Move the text spanned by the row range to be before the line preceding the row range
2975 if start_row > 0 {
2976 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2977 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2978 let insertion_point = display_map
2979 .prev_line_boundary(Point::new(start_row - 1, 0))
2980 .0;
2981
2982 // Don't move lines across excerpts
2983 if buffer
2984 .excerpt_boundaries_in_range((
2985 Bound::Excluded(insertion_point),
2986 Bound::Included(range_to_move.end),
2987 ))
2988 .next()
2989 .is_none()
2990 {
2991 let text = buffer
2992 .text_for_range(range_to_move.clone())
2993 .flat_map(|s| s.chars())
2994 .skip(1)
2995 .chain(['\n'])
2996 .collect::<String>();
2997
2998 edits.push((
2999 buffer.anchor_after(range_to_move.start)
3000 ..buffer.anchor_before(range_to_move.end),
3001 String::new(),
3002 ));
3003 let insertion_anchor = buffer.anchor_after(insertion_point);
3004 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3005
3006 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3007
3008 // Move selections up
3009 new_selections.extend(contiguous_row_selections.drain(..).map(
3010 |mut selection| {
3011 selection.start.row -= row_delta;
3012 selection.end.row -= row_delta;
3013 selection
3014 },
3015 ));
3016
3017 // Move folds up
3018 unfold_ranges.push(range_to_move.clone());
3019 for fold in display_map.folds_in_range(
3020 buffer.anchor_before(range_to_move.start)
3021 ..buffer.anchor_after(range_to_move.end),
3022 ) {
3023 let mut start = fold.start.to_point(&buffer);
3024 let mut end = fold.end.to_point(&buffer);
3025 start.row -= row_delta;
3026 end.row -= row_delta;
3027 refold_ranges.push(start..end);
3028 }
3029 }
3030 }
3031
3032 // If we didn't move line(s), preserve the existing selections
3033 new_selections.extend(contiguous_row_selections.drain(..));
3034 }
3035
3036 self.start_transaction(cx);
3037 self.unfold_ranges(unfold_ranges, cx);
3038 self.buffer.update(cx, |buffer, cx| {
3039 for (range, text) in edits {
3040 buffer.edit([range], text, cx);
3041 }
3042 });
3043 self.fold_ranges(refold_ranges, cx);
3044 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3045 self.end_transaction(cx);
3046 }
3047
3048 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3049 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3050 let buffer = self.buffer.read(cx).snapshot(cx);
3051
3052 let mut edits = Vec::new();
3053 let mut unfold_ranges = Vec::new();
3054 let mut refold_ranges = Vec::new();
3055
3056 let selections = self.local_selections::<Point>(cx);
3057 let mut selections = selections.iter().peekable();
3058 let mut contiguous_row_selections = Vec::new();
3059 let mut new_selections = Vec::new();
3060
3061 while let Some(selection) = selections.next() {
3062 // Find all the selections that span a contiguous row range
3063 contiguous_row_selections.push(selection.clone());
3064 let start_row = selection.start.row;
3065 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3066 display_map.next_line_boundary(selection.end).0.row + 1
3067 } else {
3068 selection.end.row
3069 };
3070
3071 while let Some(next_selection) = selections.peek() {
3072 if next_selection.start.row <= end_row {
3073 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3074 display_map.next_line_boundary(next_selection.end).0.row + 1
3075 } else {
3076 next_selection.end.row
3077 };
3078 contiguous_row_selections.push(selections.next().unwrap().clone());
3079 } else {
3080 break;
3081 }
3082 }
3083
3084 // Move the text spanned by the row range to be after the last line of the row range
3085 if end_row <= buffer.max_point().row {
3086 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3087 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3088
3089 // Don't move lines across excerpt boundaries
3090 if buffer
3091 .excerpt_boundaries_in_range((
3092 Bound::Excluded(range_to_move.start),
3093 Bound::Included(insertion_point),
3094 ))
3095 .next()
3096 .is_none()
3097 {
3098 let mut text = String::from("\n");
3099 text.extend(buffer.text_for_range(range_to_move.clone()));
3100 text.pop(); // Drop trailing newline
3101 edits.push((
3102 buffer.anchor_after(range_to_move.start)
3103 ..buffer.anchor_before(range_to_move.end),
3104 String::new(),
3105 ));
3106 let insertion_anchor = buffer.anchor_after(insertion_point);
3107 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3108
3109 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3110
3111 // Move selections down
3112 new_selections.extend(contiguous_row_selections.drain(..).map(
3113 |mut selection| {
3114 selection.start.row += row_delta;
3115 selection.end.row += row_delta;
3116 selection
3117 },
3118 ));
3119
3120 // Move folds down
3121 unfold_ranges.push(range_to_move.clone());
3122 for fold in display_map.folds_in_range(
3123 buffer.anchor_before(range_to_move.start)
3124 ..buffer.anchor_after(range_to_move.end),
3125 ) {
3126 let mut start = fold.start.to_point(&buffer);
3127 let mut end = fold.end.to_point(&buffer);
3128 start.row += row_delta;
3129 end.row += row_delta;
3130 refold_ranges.push(start..end);
3131 }
3132 }
3133 }
3134
3135 // If we didn't move line(s), preserve the existing selections
3136 new_selections.extend(contiguous_row_selections.drain(..));
3137 }
3138
3139 self.start_transaction(cx);
3140 self.unfold_ranges(unfold_ranges, cx);
3141 self.buffer.update(cx, |buffer, cx| {
3142 for (range, text) in edits {
3143 buffer.edit([range], text, cx);
3144 }
3145 });
3146 self.fold_ranges(refold_ranges, cx);
3147 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3148 self.end_transaction(cx);
3149 }
3150
3151 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3152 self.start_transaction(cx);
3153 let mut text = String::new();
3154 let mut selections = self.local_selections::<Point>(cx);
3155 let mut clipboard_selections = Vec::with_capacity(selections.len());
3156 {
3157 let buffer = self.buffer.read(cx).read(cx);
3158 let max_point = buffer.max_point();
3159 for selection in &mut selections {
3160 let is_entire_line = selection.is_empty();
3161 if is_entire_line {
3162 selection.start = Point::new(selection.start.row, 0);
3163 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3164 selection.goal = SelectionGoal::None;
3165 }
3166 let mut len = 0;
3167 for chunk in buffer.text_for_range(selection.start..selection.end) {
3168 text.push_str(chunk);
3169 len += chunk.len();
3170 }
3171 clipboard_selections.push(ClipboardSelection {
3172 len,
3173 is_entire_line,
3174 });
3175 }
3176 }
3177 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3178 self.insert("", cx);
3179 self.end_transaction(cx);
3180
3181 cx.as_mut()
3182 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3183 }
3184
3185 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3186 let selections = self.local_selections::<Point>(cx);
3187 let mut text = String::new();
3188 let mut clipboard_selections = Vec::with_capacity(selections.len());
3189 {
3190 let buffer = self.buffer.read(cx).read(cx);
3191 let max_point = buffer.max_point();
3192 for selection in selections.iter() {
3193 let mut start = selection.start;
3194 let mut end = selection.end;
3195 let is_entire_line = selection.is_empty();
3196 if is_entire_line {
3197 start = Point::new(start.row, 0);
3198 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3199 }
3200 let mut len = 0;
3201 for chunk in buffer.text_for_range(start..end) {
3202 text.push_str(chunk);
3203 len += chunk.len();
3204 }
3205 clipboard_selections.push(ClipboardSelection {
3206 len,
3207 is_entire_line,
3208 });
3209 }
3210 }
3211
3212 cx.as_mut()
3213 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3214 }
3215
3216 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3217 if let Some(item) = cx.as_mut().read_from_clipboard() {
3218 let clipboard_text = item.text();
3219 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3220 let mut selections = self.local_selections::<usize>(cx);
3221 let all_selections_were_entire_line =
3222 clipboard_selections.iter().all(|s| s.is_entire_line);
3223 if clipboard_selections.len() != selections.len() {
3224 clipboard_selections.clear();
3225 }
3226
3227 let mut delta = 0_isize;
3228 let mut start_offset = 0;
3229 for (i, selection) in selections.iter_mut().enumerate() {
3230 let to_insert;
3231 let entire_line;
3232 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3233 let end_offset = start_offset + clipboard_selection.len;
3234 to_insert = &clipboard_text[start_offset..end_offset];
3235 entire_line = clipboard_selection.is_entire_line;
3236 start_offset = end_offset
3237 } else {
3238 to_insert = clipboard_text.as_str();
3239 entire_line = all_selections_were_entire_line;
3240 }
3241
3242 selection.start = (selection.start as isize + delta) as usize;
3243 selection.end = (selection.end as isize + delta) as usize;
3244
3245 self.buffer.update(cx, |buffer, cx| {
3246 // If the corresponding selection was empty when this slice of the
3247 // clipboard text was written, then the entire line containing the
3248 // selection was copied. If this selection is also currently empty,
3249 // then paste the line before the current line of the buffer.
3250 let range = if selection.is_empty() && entire_line {
3251 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3252 let line_start = selection.start - column;
3253 line_start..line_start
3254 } else {
3255 selection.start..selection.end
3256 };
3257
3258 delta += to_insert.len() as isize - range.len() as isize;
3259 buffer.edit([range], to_insert, cx);
3260 selection.start += to_insert.len();
3261 selection.end = selection.start;
3262 });
3263 }
3264 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3265 } else {
3266 self.insert(clipboard_text, cx);
3267 }
3268 }
3269 }
3270
3271 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3272 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3273 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3274 self.set_selections(selections, None, cx);
3275 }
3276 self.request_autoscroll(Autoscroll::Fit, cx);
3277 }
3278 }
3279
3280 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3281 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3282 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3283 self.set_selections(selections, None, cx);
3284 }
3285 self.request_autoscroll(Autoscroll::Fit, cx);
3286 }
3287 }
3288
3289 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3290 self.buffer
3291 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3292 }
3293
3294 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3295 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3296 let mut selections = self.local_selections::<Point>(cx);
3297 for selection in &mut selections {
3298 let start = selection.start.to_display_point(&display_map);
3299 let end = selection.end.to_display_point(&display_map);
3300
3301 if start != end {
3302 selection.end = selection.start.clone();
3303 } else {
3304 let cursor = movement::left(&display_map, start)
3305 .unwrap()
3306 .to_point(&display_map);
3307 selection.start = cursor.clone();
3308 selection.end = cursor;
3309 }
3310 selection.reversed = false;
3311 selection.goal = SelectionGoal::None;
3312 }
3313 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3314 }
3315
3316 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3317 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3318 let mut selections = self.local_selections::<Point>(cx);
3319 for selection in &mut selections {
3320 let head = selection.head().to_display_point(&display_map);
3321 let cursor = movement::left(&display_map, head)
3322 .unwrap()
3323 .to_point(&display_map);
3324 selection.set_head(cursor);
3325 selection.goal = SelectionGoal::None;
3326 }
3327 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3328 }
3329
3330 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3331 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3332 let mut selections = self.local_selections::<Point>(cx);
3333 for selection in &mut selections {
3334 let start = selection.start.to_display_point(&display_map);
3335 let end = selection.end.to_display_point(&display_map);
3336
3337 if start != end {
3338 selection.start = selection.end.clone();
3339 } else {
3340 let cursor = movement::right(&display_map, end)
3341 .unwrap()
3342 .to_point(&display_map);
3343 selection.start = cursor;
3344 selection.end = cursor;
3345 }
3346 selection.reversed = false;
3347 selection.goal = SelectionGoal::None;
3348 }
3349 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3350 }
3351
3352 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3353 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3354 let mut selections = self.local_selections::<Point>(cx);
3355 for selection in &mut selections {
3356 let head = selection.head().to_display_point(&display_map);
3357 let cursor = movement::right(&display_map, head)
3358 .unwrap()
3359 .to_point(&display_map);
3360 selection.set_head(cursor);
3361 selection.goal = SelectionGoal::None;
3362 }
3363 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3364 }
3365
3366 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3367 if self.take_rename(true, cx).is_some() {
3368 return;
3369 }
3370
3371 if let Some(context_menu) = self.context_menu.as_mut() {
3372 if context_menu.select_prev(cx) {
3373 return;
3374 }
3375 }
3376
3377 if matches!(self.mode, EditorMode::SingleLine) {
3378 cx.propagate_action();
3379 return;
3380 }
3381
3382 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3383 let mut selections = self.local_selections::<Point>(cx);
3384 for selection in &mut selections {
3385 let start = selection.start.to_display_point(&display_map);
3386 let end = selection.end.to_display_point(&display_map);
3387 if start != end {
3388 selection.goal = SelectionGoal::None;
3389 }
3390
3391 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3392 let cursor = start.to_point(&display_map);
3393 selection.start = cursor;
3394 selection.end = cursor;
3395 selection.goal = goal;
3396 selection.reversed = false;
3397 }
3398 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3399 }
3400
3401 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3402 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3403 let mut selections = self.local_selections::<Point>(cx);
3404 for selection in &mut selections {
3405 let head = selection.head().to_display_point(&display_map);
3406 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3407 let cursor = head.to_point(&display_map);
3408 selection.set_head(cursor);
3409 selection.goal = goal;
3410 }
3411 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3412 }
3413
3414 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3415 self.take_rename(true, cx);
3416
3417 if let Some(context_menu) = self.context_menu.as_mut() {
3418 if context_menu.select_next(cx) {
3419 return;
3420 }
3421 }
3422
3423 if matches!(self.mode, EditorMode::SingleLine) {
3424 cx.propagate_action();
3425 return;
3426 }
3427
3428 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3429 let mut selections = self.local_selections::<Point>(cx);
3430 for selection in &mut selections {
3431 let start = selection.start.to_display_point(&display_map);
3432 let end = selection.end.to_display_point(&display_map);
3433 if start != end {
3434 selection.goal = SelectionGoal::None;
3435 }
3436
3437 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3438 let cursor = start.to_point(&display_map);
3439 selection.start = cursor;
3440 selection.end = cursor;
3441 selection.goal = goal;
3442 selection.reversed = false;
3443 }
3444 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3445 }
3446
3447 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3448 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3449 let mut selections = self.local_selections::<Point>(cx);
3450 for selection in &mut selections {
3451 let head = selection.head().to_display_point(&display_map);
3452 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3453 let cursor = head.to_point(&display_map);
3454 selection.set_head(cursor);
3455 selection.goal = goal;
3456 }
3457 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3458 }
3459
3460 pub fn move_to_previous_word_boundary(
3461 &mut self,
3462 _: &MoveToPreviousWordBoundary,
3463 cx: &mut ViewContext<Self>,
3464 ) {
3465 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3466 let mut selections = self.local_selections::<Point>(cx);
3467 for selection in &mut selections {
3468 let head = selection.head().to_display_point(&display_map);
3469 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3470 selection.start = cursor.clone();
3471 selection.end = cursor;
3472 selection.reversed = false;
3473 selection.goal = SelectionGoal::None;
3474 }
3475 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3476 }
3477
3478 pub fn select_to_previous_word_boundary(
3479 &mut self,
3480 _: &SelectToPreviousWordBoundary,
3481 cx: &mut ViewContext<Self>,
3482 ) {
3483 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3484 let mut selections = self.local_selections::<Point>(cx);
3485 for selection in &mut selections {
3486 let head = selection.head().to_display_point(&display_map);
3487 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3488 selection.set_head(cursor);
3489 selection.goal = SelectionGoal::None;
3490 }
3491 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3492 }
3493
3494 pub fn delete_to_previous_word_boundary(
3495 &mut self,
3496 _: &DeleteToPreviousWordBoundary,
3497 cx: &mut ViewContext<Self>,
3498 ) {
3499 self.start_transaction(cx);
3500 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3501 let mut selections = self.local_selections::<Point>(cx);
3502 for selection in &mut selections {
3503 if selection.is_empty() {
3504 let head = selection.head().to_display_point(&display_map);
3505 let cursor =
3506 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3507 selection.set_head(cursor);
3508 selection.goal = SelectionGoal::None;
3509 }
3510 }
3511 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3512 self.insert("", cx);
3513 self.end_transaction(cx);
3514 }
3515
3516 pub fn move_to_next_word_boundary(
3517 &mut self,
3518 _: &MoveToNextWordBoundary,
3519 cx: &mut ViewContext<Self>,
3520 ) {
3521 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3522 let mut selections = self.local_selections::<Point>(cx);
3523 for selection in &mut selections {
3524 let head = selection.head().to_display_point(&display_map);
3525 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3526 selection.start = cursor;
3527 selection.end = cursor;
3528 selection.reversed = false;
3529 selection.goal = SelectionGoal::None;
3530 }
3531 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3532 }
3533
3534 pub fn select_to_next_word_boundary(
3535 &mut self,
3536 _: &SelectToNextWordBoundary,
3537 cx: &mut ViewContext<Self>,
3538 ) {
3539 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3540 let mut selections = self.local_selections::<Point>(cx);
3541 for selection in &mut selections {
3542 let head = selection.head().to_display_point(&display_map);
3543 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3544 selection.set_head(cursor);
3545 selection.goal = SelectionGoal::None;
3546 }
3547 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3548 }
3549
3550 pub fn delete_to_next_word_boundary(
3551 &mut self,
3552 _: &DeleteToNextWordBoundary,
3553 cx: &mut ViewContext<Self>,
3554 ) {
3555 self.start_transaction(cx);
3556 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3557 let mut selections = self.local_selections::<Point>(cx);
3558 for selection in &mut selections {
3559 if selection.is_empty() {
3560 let head = selection.head().to_display_point(&display_map);
3561 let cursor =
3562 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3563 selection.set_head(cursor);
3564 selection.goal = SelectionGoal::None;
3565 }
3566 }
3567 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3568 self.insert("", cx);
3569 self.end_transaction(cx);
3570 }
3571
3572 pub fn move_to_beginning_of_line(
3573 &mut self,
3574 _: &MoveToBeginningOfLine,
3575 cx: &mut ViewContext<Self>,
3576 ) {
3577 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3578 let mut selections = self.local_selections::<Point>(cx);
3579 for selection in &mut selections {
3580 let head = selection.head().to_display_point(&display_map);
3581 let new_head = movement::line_beginning(&display_map, head, true);
3582 let cursor = new_head.to_point(&display_map);
3583 selection.start = cursor;
3584 selection.end = cursor;
3585 selection.reversed = false;
3586 selection.goal = SelectionGoal::None;
3587 }
3588 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3589 }
3590
3591 pub fn select_to_beginning_of_line(
3592 &mut self,
3593 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3594 cx: &mut ViewContext<Self>,
3595 ) {
3596 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3597 let mut selections = self.local_selections::<Point>(cx);
3598 for selection in &mut selections {
3599 let head = selection.head().to_display_point(&display_map);
3600 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3601 selection.set_head(new_head.to_point(&display_map));
3602 selection.goal = SelectionGoal::None;
3603 }
3604 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3605 }
3606
3607 pub fn delete_to_beginning_of_line(
3608 &mut self,
3609 _: &DeleteToBeginningOfLine,
3610 cx: &mut ViewContext<Self>,
3611 ) {
3612 self.start_transaction(cx);
3613 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3614 self.backspace(&Backspace, cx);
3615 self.end_transaction(cx);
3616 }
3617
3618 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3619 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3620 let mut selections = self.local_selections::<Point>(cx);
3621 {
3622 for selection in &mut selections {
3623 let head = selection.head().to_display_point(&display_map);
3624 let new_head = movement::line_end(&display_map, head, true);
3625 let anchor = new_head.to_point(&display_map);
3626 selection.start = anchor.clone();
3627 selection.end = anchor;
3628 selection.reversed = false;
3629 selection.goal = SelectionGoal::None;
3630 }
3631 }
3632 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3633 }
3634
3635 pub fn select_to_end_of_line(
3636 &mut self,
3637 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3638 cx: &mut ViewContext<Self>,
3639 ) {
3640 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3641 let mut selections = self.local_selections::<Point>(cx);
3642 for selection in &mut selections {
3643 let head = selection.head().to_display_point(&display_map);
3644 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3645 selection.set_head(new_head.to_point(&display_map));
3646 selection.goal = SelectionGoal::None;
3647 }
3648 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3649 }
3650
3651 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3652 self.start_transaction(cx);
3653 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3654 self.delete(&Delete, cx);
3655 self.end_transaction(cx);
3656 }
3657
3658 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3659 self.start_transaction(cx);
3660 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3661 self.cut(&Cut, cx);
3662 self.end_transaction(cx);
3663 }
3664
3665 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3666 if matches!(self.mode, EditorMode::SingleLine) {
3667 cx.propagate_action();
3668 return;
3669 }
3670
3671 let selection = Selection {
3672 id: post_inc(&mut self.next_selection_id),
3673 start: 0,
3674 end: 0,
3675 reversed: false,
3676 goal: SelectionGoal::None,
3677 };
3678 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3679 }
3680
3681 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3682 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3683 selection.set_head(Point::zero());
3684 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3685 }
3686
3687 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3688 if matches!(self.mode, EditorMode::SingleLine) {
3689 cx.propagate_action();
3690 return;
3691 }
3692
3693 let cursor = self.buffer.read(cx).read(cx).len();
3694 let selection = Selection {
3695 id: post_inc(&mut self.next_selection_id),
3696 start: cursor,
3697 end: cursor,
3698 reversed: false,
3699 goal: SelectionGoal::None,
3700 };
3701 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3702 }
3703
3704 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3705 self.nav_history = nav_history;
3706 }
3707
3708 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3709 self.nav_history.as_ref()
3710 }
3711
3712 fn push_to_nav_history(
3713 &self,
3714 position: Anchor,
3715 new_position: Option<Point>,
3716 cx: &mut ViewContext<Self>,
3717 ) {
3718 if let Some(nav_history) = &self.nav_history {
3719 let buffer = self.buffer.read(cx).read(cx);
3720 let offset = position.to_offset(&buffer);
3721 let point = position.to_point(&buffer);
3722 drop(buffer);
3723
3724 if let Some(new_position) = new_position {
3725 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3726 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3727 return;
3728 }
3729 }
3730
3731 nav_history.push(Some(NavigationData {
3732 anchor: position,
3733 offset,
3734 }));
3735 }
3736 }
3737
3738 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3739 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3740 selection.set_head(self.buffer.read(cx).read(cx).len());
3741 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3742 }
3743
3744 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3745 let selection = Selection {
3746 id: post_inc(&mut self.next_selection_id),
3747 start: 0,
3748 end: self.buffer.read(cx).read(cx).len(),
3749 reversed: false,
3750 goal: SelectionGoal::None,
3751 };
3752 self.update_selections(vec![selection], None, cx);
3753 }
3754
3755 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3756 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3757 let mut selections = self.local_selections::<Point>(cx);
3758 let max_point = display_map.buffer_snapshot.max_point();
3759 for selection in &mut selections {
3760 let rows = selection.spanned_rows(true, &display_map);
3761 selection.start = Point::new(rows.start, 0);
3762 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3763 selection.reversed = false;
3764 }
3765 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3766 }
3767
3768 pub fn split_selection_into_lines(
3769 &mut self,
3770 _: &SplitSelectionIntoLines,
3771 cx: &mut ViewContext<Self>,
3772 ) {
3773 let mut to_unfold = Vec::new();
3774 let mut new_selections = Vec::new();
3775 {
3776 let selections = self.local_selections::<Point>(cx);
3777 let buffer = self.buffer.read(cx).read(cx);
3778 for selection in selections {
3779 for row in selection.start.row..selection.end.row {
3780 let cursor = Point::new(row, buffer.line_len(row));
3781 new_selections.push(Selection {
3782 id: post_inc(&mut self.next_selection_id),
3783 start: cursor,
3784 end: cursor,
3785 reversed: false,
3786 goal: SelectionGoal::None,
3787 });
3788 }
3789 new_selections.push(Selection {
3790 id: selection.id,
3791 start: selection.end,
3792 end: selection.end,
3793 reversed: false,
3794 goal: SelectionGoal::None,
3795 });
3796 to_unfold.push(selection.start..selection.end);
3797 }
3798 }
3799 self.unfold_ranges(to_unfold, cx);
3800 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3801 }
3802
3803 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3804 self.add_selection(true, cx);
3805 }
3806
3807 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3808 self.add_selection(false, cx);
3809 }
3810
3811 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3812 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3813 let mut selections = self.local_selections::<Point>(cx);
3814 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3815 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3816 let range = oldest_selection.display_range(&display_map).sorted();
3817 let columns = cmp::min(range.start.column(), range.end.column())
3818 ..cmp::max(range.start.column(), range.end.column());
3819
3820 selections.clear();
3821 let mut stack = Vec::new();
3822 for row in range.start.row()..=range.end.row() {
3823 if let Some(selection) = self.build_columnar_selection(
3824 &display_map,
3825 row,
3826 &columns,
3827 oldest_selection.reversed,
3828 ) {
3829 stack.push(selection.id);
3830 selections.push(selection);
3831 }
3832 }
3833
3834 if above {
3835 stack.reverse();
3836 }
3837
3838 AddSelectionsState { above, stack }
3839 });
3840
3841 let last_added_selection = *state.stack.last().unwrap();
3842 let mut new_selections = Vec::new();
3843 if above == state.above {
3844 let end_row = if above {
3845 0
3846 } else {
3847 display_map.max_point().row()
3848 };
3849
3850 'outer: for selection in selections {
3851 if selection.id == last_added_selection {
3852 let range = selection.display_range(&display_map).sorted();
3853 debug_assert_eq!(range.start.row(), range.end.row());
3854 let mut row = range.start.row();
3855 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3856 {
3857 start..end
3858 } else {
3859 cmp::min(range.start.column(), range.end.column())
3860 ..cmp::max(range.start.column(), range.end.column())
3861 };
3862
3863 while row != end_row {
3864 if above {
3865 row -= 1;
3866 } else {
3867 row += 1;
3868 }
3869
3870 if let Some(new_selection) = self.build_columnar_selection(
3871 &display_map,
3872 row,
3873 &columns,
3874 selection.reversed,
3875 ) {
3876 state.stack.push(new_selection.id);
3877 if above {
3878 new_selections.push(new_selection);
3879 new_selections.push(selection);
3880 } else {
3881 new_selections.push(selection);
3882 new_selections.push(new_selection);
3883 }
3884
3885 continue 'outer;
3886 }
3887 }
3888 }
3889
3890 new_selections.push(selection);
3891 }
3892 } else {
3893 new_selections = selections;
3894 new_selections.retain(|s| s.id != last_added_selection);
3895 state.stack.pop();
3896 }
3897
3898 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3899 if state.stack.len() > 1 {
3900 self.add_selections_state = Some(state);
3901 }
3902 }
3903
3904 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3905 let replace_newest = action.0;
3906 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3907 let buffer = &display_map.buffer_snapshot;
3908 let mut selections = self.local_selections::<usize>(cx);
3909 if let Some(mut select_next_state) = self.select_next_state.take() {
3910 let query = &select_next_state.query;
3911 if !select_next_state.done {
3912 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3913 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3914 let mut next_selected_range = None;
3915
3916 let bytes_after_last_selection =
3917 buffer.bytes_in_range(last_selection.end..buffer.len());
3918 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3919 let query_matches = query
3920 .stream_find_iter(bytes_after_last_selection)
3921 .map(|result| (last_selection.end, result))
3922 .chain(
3923 query
3924 .stream_find_iter(bytes_before_first_selection)
3925 .map(|result| (0, result)),
3926 );
3927 for (start_offset, query_match) in query_matches {
3928 let query_match = query_match.unwrap(); // can only fail due to I/O
3929 let offset_range =
3930 start_offset + query_match.start()..start_offset + query_match.end();
3931 let display_range = offset_range.start.to_display_point(&display_map)
3932 ..offset_range.end.to_display_point(&display_map);
3933
3934 if !select_next_state.wordwise
3935 || (!movement::is_inside_word(&display_map, display_range.start)
3936 && !movement::is_inside_word(&display_map, display_range.end))
3937 {
3938 next_selected_range = Some(offset_range);
3939 break;
3940 }
3941 }
3942
3943 if let Some(next_selected_range) = next_selected_range {
3944 if replace_newest {
3945 if let Some(newest_id) =
3946 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3947 {
3948 selections.retain(|s| s.id != newest_id);
3949 }
3950 }
3951 selections.push(Selection {
3952 id: post_inc(&mut self.next_selection_id),
3953 start: next_selected_range.start,
3954 end: next_selected_range.end,
3955 reversed: false,
3956 goal: SelectionGoal::None,
3957 });
3958 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3959 } else {
3960 select_next_state.done = true;
3961 }
3962 }
3963
3964 self.select_next_state = Some(select_next_state);
3965 } else if selections.len() == 1 {
3966 let selection = selections.last_mut().unwrap();
3967 if selection.start == selection.end {
3968 let word_range = movement::surrounding_word(
3969 &display_map,
3970 selection.start.to_display_point(&display_map),
3971 );
3972 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3973 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3974 selection.goal = SelectionGoal::None;
3975 selection.reversed = false;
3976
3977 let query = buffer
3978 .text_for_range(selection.start..selection.end)
3979 .collect::<String>();
3980 let select_state = SelectNextState {
3981 query: AhoCorasick::new_auto_configured(&[query]),
3982 wordwise: true,
3983 done: false,
3984 };
3985 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3986 self.select_next_state = Some(select_state);
3987 } else {
3988 let query = buffer
3989 .text_for_range(selection.start..selection.end)
3990 .collect::<String>();
3991 self.select_next_state = Some(SelectNextState {
3992 query: AhoCorasick::new_auto_configured(&[query]),
3993 wordwise: false,
3994 done: false,
3995 });
3996 self.select_next(action, cx);
3997 }
3998 }
3999 }
4000
4001 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4002 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4003 // as that portion won't be used for detecting if a line is a comment.
4004 let full_comment_prefix =
4005 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4006 prefix.to_string()
4007 } else {
4008 return;
4009 };
4010 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4011 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4012
4013 self.start_transaction(cx);
4014 let mut selections = self.local_selections::<Point>(cx);
4015 let mut all_selection_lines_are_comments = true;
4016 let mut edit_ranges = Vec::new();
4017 let mut last_toggled_row = None;
4018 self.buffer.update(cx, |buffer, cx| {
4019 for selection in &mut selections {
4020 edit_ranges.clear();
4021 let snapshot = buffer.snapshot(cx);
4022
4023 let end_row =
4024 if selection.end.row > selection.start.row && selection.end.column == 0 {
4025 selection.end.row
4026 } else {
4027 selection.end.row + 1
4028 };
4029
4030 for row in selection.start.row..end_row {
4031 // If multiple selections contain a given row, avoid processing that
4032 // row more than once.
4033 if last_toggled_row == Some(row) {
4034 continue;
4035 } else {
4036 last_toggled_row = Some(row);
4037 }
4038
4039 if snapshot.is_line_blank(row) {
4040 continue;
4041 }
4042
4043 let start = Point::new(row, snapshot.indent_column_for_line(row));
4044 let mut line_bytes = snapshot
4045 .bytes_in_range(start..snapshot.max_point())
4046 .flatten()
4047 .copied();
4048
4049 // If this line currently begins with the line comment prefix, then record
4050 // the range containing the prefix.
4051 if all_selection_lines_are_comments
4052 && line_bytes
4053 .by_ref()
4054 .take(comment_prefix.len())
4055 .eq(comment_prefix.bytes())
4056 {
4057 // Include any whitespace that matches the comment prefix.
4058 let matching_whitespace_len = line_bytes
4059 .zip(comment_prefix_whitespace.bytes())
4060 .take_while(|(a, b)| a == b)
4061 .count() as u32;
4062 let end = Point::new(
4063 row,
4064 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4065 );
4066 edit_ranges.push(start..end);
4067 }
4068 // If this line does not begin with the line comment prefix, then record
4069 // the position where the prefix should be inserted.
4070 else {
4071 all_selection_lines_are_comments = false;
4072 edit_ranges.push(start..start);
4073 }
4074 }
4075
4076 if !edit_ranges.is_empty() {
4077 if all_selection_lines_are_comments {
4078 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4079 } else {
4080 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4081 let edit_ranges = edit_ranges.iter().map(|range| {
4082 let position = Point::new(range.start.row, min_column);
4083 position..position
4084 });
4085 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4086 }
4087 }
4088 }
4089 });
4090
4091 self.update_selections(
4092 self.local_selections::<usize>(cx),
4093 Some(Autoscroll::Fit),
4094 cx,
4095 );
4096 self.end_transaction(cx);
4097 }
4098
4099 pub fn select_larger_syntax_node(
4100 &mut self,
4101 _: &SelectLargerSyntaxNode,
4102 cx: &mut ViewContext<Self>,
4103 ) {
4104 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4105 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4106 let buffer = self.buffer.read(cx).snapshot(cx);
4107
4108 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4109 let mut selected_larger_node = false;
4110 let new_selections = old_selections
4111 .iter()
4112 .map(|selection| {
4113 let old_range = selection.start..selection.end;
4114 let mut new_range = old_range.clone();
4115 while let Some(containing_range) =
4116 buffer.range_for_syntax_ancestor(new_range.clone())
4117 {
4118 new_range = containing_range;
4119 if !display_map.intersects_fold(new_range.start)
4120 && !display_map.intersects_fold(new_range.end)
4121 {
4122 break;
4123 }
4124 }
4125
4126 selected_larger_node |= new_range != old_range;
4127 Selection {
4128 id: selection.id,
4129 start: new_range.start,
4130 end: new_range.end,
4131 goal: SelectionGoal::None,
4132 reversed: selection.reversed,
4133 }
4134 })
4135 .collect::<Vec<_>>();
4136
4137 if selected_larger_node {
4138 stack.push(old_selections);
4139 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4140 }
4141 self.select_larger_syntax_node_stack = stack;
4142 }
4143
4144 pub fn select_smaller_syntax_node(
4145 &mut self,
4146 _: &SelectSmallerSyntaxNode,
4147 cx: &mut ViewContext<Self>,
4148 ) {
4149 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4150 if let Some(selections) = stack.pop() {
4151 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4152 }
4153 self.select_larger_syntax_node_stack = stack;
4154 }
4155
4156 pub fn move_to_enclosing_bracket(
4157 &mut self,
4158 _: &MoveToEnclosingBracket,
4159 cx: &mut ViewContext<Self>,
4160 ) {
4161 let mut selections = self.local_selections::<usize>(cx);
4162 let buffer = self.buffer.read(cx).snapshot(cx);
4163 for selection in &mut selections {
4164 if let Some((open_range, close_range)) =
4165 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4166 {
4167 let close_range = close_range.to_inclusive();
4168 let destination = if close_range.contains(&selection.start)
4169 && close_range.contains(&selection.end)
4170 {
4171 open_range.end
4172 } else {
4173 *close_range.start()
4174 };
4175 selection.start = destination;
4176 selection.end = destination;
4177 }
4178 }
4179
4180 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4181 }
4182
4183 pub fn go_to_diagnostic(
4184 &mut self,
4185 &GoToDiagnostic(direction): &GoToDiagnostic,
4186 cx: &mut ViewContext<Self>,
4187 ) {
4188 let buffer = self.buffer.read(cx).snapshot(cx);
4189 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4190 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4191 active_diagnostics
4192 .primary_range
4193 .to_offset(&buffer)
4194 .to_inclusive()
4195 });
4196 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4197 if active_primary_range.contains(&selection.head()) {
4198 *active_primary_range.end()
4199 } else {
4200 selection.head()
4201 }
4202 } else {
4203 selection.head()
4204 };
4205
4206 loop {
4207 let mut diagnostics = if direction == Direction::Prev {
4208 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4209 } else {
4210 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4211 };
4212 let group = diagnostics.find_map(|entry| {
4213 if entry.diagnostic.is_primary
4214 && !entry.range.is_empty()
4215 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4216 {
4217 Some((entry.range, entry.diagnostic.group_id))
4218 } else {
4219 None
4220 }
4221 });
4222
4223 if let Some((primary_range, group_id)) = group {
4224 self.activate_diagnostics(group_id, cx);
4225 self.update_selections(
4226 vec![Selection {
4227 id: selection.id,
4228 start: primary_range.start,
4229 end: primary_range.start,
4230 reversed: false,
4231 goal: SelectionGoal::None,
4232 }],
4233 Some(Autoscroll::Center),
4234 cx,
4235 );
4236 break;
4237 } else {
4238 // Cycle around to the start of the buffer, potentially moving back to the start of
4239 // the currently active diagnostic.
4240 active_primary_range.take();
4241 if direction == Direction::Prev {
4242 if search_start == buffer.len() {
4243 break;
4244 } else {
4245 search_start = buffer.len();
4246 }
4247 } else {
4248 if search_start == 0 {
4249 break;
4250 } else {
4251 search_start = 0;
4252 }
4253 }
4254 }
4255 }
4256 }
4257
4258 pub fn go_to_definition(
4259 workspace: &mut Workspace,
4260 _: &GoToDefinition,
4261 cx: &mut ViewContext<Workspace>,
4262 ) {
4263 let active_item = workspace.active_item(cx);
4264 let editor_handle = if let Some(editor) = active_item
4265 .as_ref()
4266 .and_then(|item| item.act_as::<Self>(cx))
4267 {
4268 editor
4269 } else {
4270 return;
4271 };
4272
4273 let editor = editor_handle.read(cx);
4274 let head = editor.newest_selection::<usize>(cx).head();
4275 let (buffer, head) =
4276 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4277 text_anchor
4278 } else {
4279 return;
4280 };
4281
4282 let definitions = workspace
4283 .project()
4284 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4285 cx.spawn(|workspace, mut cx| async move {
4286 let definitions = definitions.await?;
4287 workspace.update(&mut cx, |workspace, cx| {
4288 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4289 for definition in definitions {
4290 let range = definition.range.to_offset(definition.buffer.read(cx));
4291 let target_editor_handle = workspace
4292 .open_item(BufferItemHandle(definition.buffer), cx)
4293 .downcast::<Self>()
4294 .unwrap();
4295
4296 target_editor_handle.update(cx, |target_editor, cx| {
4297 // When selecting a definition in a different buffer, disable the nav history
4298 // to avoid creating a history entry at the previous cursor location.
4299 if editor_handle != target_editor_handle {
4300 nav_history.borrow_mut().disable();
4301 }
4302 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4303 nav_history.borrow_mut().enable();
4304 });
4305 }
4306 });
4307
4308 Ok::<(), anyhow::Error>(())
4309 })
4310 .detach_and_log_err(cx);
4311 }
4312
4313 pub fn find_all_references(
4314 workspace: &mut Workspace,
4315 _: &FindAllReferences,
4316 cx: &mut ViewContext<Workspace>,
4317 ) -> Option<Task<Result<()>>> {
4318 let active_item = workspace.active_item(cx)?;
4319 let editor_handle = active_item.act_as::<Self>(cx)?;
4320
4321 let editor = editor_handle.read(cx);
4322 let head = editor.newest_selection::<usize>(cx).head();
4323 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4324 let replica_id = editor.replica_id(cx);
4325
4326 let references = workspace
4327 .project()
4328 .update(cx, |project, cx| project.references(&buffer, head, cx));
4329 Some(cx.spawn(|workspace, mut cx| async move {
4330 let mut locations = references.await?;
4331 if locations.is_empty() {
4332 return Ok(());
4333 }
4334
4335 locations.sort_by_key(|location| location.buffer.id());
4336 let mut locations = locations.into_iter().peekable();
4337 let mut ranges_to_highlight = Vec::new();
4338
4339 let excerpt_buffer = cx.add_model(|cx| {
4340 let mut symbol_name = None;
4341 let mut multibuffer = MultiBuffer::new(replica_id);
4342 while let Some(location) = locations.next() {
4343 let buffer = location.buffer.read(cx);
4344 let mut ranges_for_buffer = Vec::new();
4345 let range = location.range.to_offset(buffer);
4346 ranges_for_buffer.push(range.clone());
4347 if symbol_name.is_none() {
4348 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4349 }
4350
4351 while let Some(next_location) = locations.peek() {
4352 if next_location.buffer == location.buffer {
4353 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4354 locations.next();
4355 } else {
4356 break;
4357 }
4358 }
4359
4360 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4361 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4362 location.buffer.clone(),
4363 ranges_for_buffer,
4364 1,
4365 cx,
4366 ));
4367 }
4368 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4369 });
4370
4371 workspace.update(&mut cx, |workspace, cx| {
4372 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4373 if let Some(editor) = editor.act_as::<Self>(cx) {
4374 editor.update(cx, |editor, cx| {
4375 let color = editor.style(cx).highlighted_line_background;
4376 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4377 });
4378 }
4379 });
4380
4381 Ok(())
4382 }))
4383 }
4384
4385 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4386 use language::ToOffset as _;
4387
4388 let project = self.project.clone()?;
4389 let selection = self.newest_anchor_selection().clone();
4390 let (cursor_buffer, cursor_buffer_position) = self
4391 .buffer
4392 .read(cx)
4393 .text_anchor_for_position(selection.head(), cx)?;
4394 let (tail_buffer, _) = self
4395 .buffer
4396 .read(cx)
4397 .text_anchor_for_position(selection.tail(), cx)?;
4398 if tail_buffer != cursor_buffer {
4399 return None;
4400 }
4401
4402 let snapshot = cursor_buffer.read(cx).snapshot();
4403 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4404 let prepare_rename = project.update(cx, |project, cx| {
4405 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4406 });
4407
4408 Some(cx.spawn(|this, mut cx| async move {
4409 if let Some(rename_range) = prepare_rename.await? {
4410 let rename_buffer_range = rename_range.to_offset(&snapshot);
4411 let cursor_offset_in_rename_range =
4412 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4413
4414 this.update(&mut cx, |this, cx| {
4415 this.take_rename(false, cx);
4416 let style = this.style(cx);
4417 let buffer = this.buffer.read(cx).read(cx);
4418 let cursor_offset = selection.head().to_offset(&buffer);
4419 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4420 let rename_end = rename_start + rename_buffer_range.len();
4421 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4422 let mut old_highlight_id = None;
4423 let old_name = buffer
4424 .chunks(rename_start..rename_end, true)
4425 .map(|chunk| {
4426 if old_highlight_id.is_none() {
4427 old_highlight_id = chunk.syntax_highlight_id;
4428 }
4429 chunk.text
4430 })
4431 .collect();
4432
4433 drop(buffer);
4434
4435 // Position the selection in the rename editor so that it matches the current selection.
4436 this.show_local_selections = false;
4437 let rename_editor = cx.add_view(|cx| {
4438 let mut editor = Editor::single_line(None, cx);
4439 if let Some(old_highlight_id) = old_highlight_id {
4440 editor.override_text_style =
4441 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4442 }
4443 editor
4444 .buffer
4445 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4446 editor.select_all(&SelectAll, cx);
4447 editor
4448 });
4449
4450 let ranges = this
4451 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4452 .into_iter()
4453 .flat_map(|(_, ranges)| ranges)
4454 .chain(
4455 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4456 .into_iter()
4457 .flat_map(|(_, ranges)| ranges),
4458 )
4459 .collect();
4460 this.highlight_text::<Rename>(
4461 ranges,
4462 HighlightStyle {
4463 fade_out: Some(style.rename_fade),
4464 ..Default::default()
4465 },
4466 cx,
4467 );
4468 cx.focus(&rename_editor);
4469 let block_id = this.insert_blocks(
4470 [BlockProperties {
4471 position: range.start.clone(),
4472 height: 1,
4473 render: Arc::new({
4474 let editor = rename_editor.clone();
4475 move |cx: &BlockContext| {
4476 ChildView::new(editor.clone())
4477 .contained()
4478 .with_padding_left(cx.anchor_x)
4479 .boxed()
4480 }
4481 }),
4482 disposition: BlockDisposition::Below,
4483 }],
4484 cx,
4485 )[0];
4486 this.pending_rename = Some(RenameState {
4487 range,
4488 old_name,
4489 editor: rename_editor,
4490 block_id,
4491 });
4492 });
4493 }
4494
4495 Ok(())
4496 }))
4497 }
4498
4499 pub fn confirm_rename(
4500 workspace: &mut Workspace,
4501 _: &ConfirmRename,
4502 cx: &mut ViewContext<Workspace>,
4503 ) -> Option<Task<Result<()>>> {
4504 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4505
4506 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4507 let rename = editor.take_rename(false, cx)?;
4508 let buffer = editor.buffer.read(cx);
4509 let (start_buffer, start) =
4510 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4511 let (end_buffer, end) =
4512 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4513 if start_buffer == end_buffer {
4514 let new_name = rename.editor.read(cx).text(cx);
4515 Some((start_buffer, start..end, rename.old_name, new_name))
4516 } else {
4517 None
4518 }
4519 })?;
4520
4521 let rename = workspace.project().clone().update(cx, |project, cx| {
4522 project.perform_rename(
4523 buffer.clone(),
4524 range.start.clone(),
4525 new_name.clone(),
4526 true,
4527 cx,
4528 )
4529 });
4530
4531 Some(cx.spawn(|workspace, mut cx| async move {
4532 let project_transaction = rename.await?;
4533 Self::open_project_transaction(
4534 editor.clone(),
4535 workspace,
4536 project_transaction,
4537 format!("Rename: {} → {}", old_name, new_name),
4538 cx.clone(),
4539 )
4540 .await?;
4541
4542 editor.update(&mut cx, |editor, cx| {
4543 editor.refresh_document_highlights(cx);
4544 });
4545 Ok(())
4546 }))
4547 }
4548
4549 fn take_rename(
4550 &mut self,
4551 moving_cursor: bool,
4552 cx: &mut ViewContext<Self>,
4553 ) -> Option<RenameState> {
4554 let rename = self.pending_rename.take()?;
4555 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4556 self.clear_text_highlights::<Rename>(cx);
4557 self.show_local_selections = true;
4558
4559 if moving_cursor {
4560 let cursor_in_rename_editor =
4561 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4562
4563 // Update the selection to match the position of the selection inside
4564 // the rename editor.
4565 let snapshot = self.buffer.read(cx).read(cx);
4566 let rename_range = rename.range.to_offset(&snapshot);
4567 let cursor_in_editor = snapshot
4568 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4569 .min(rename_range.end);
4570 drop(snapshot);
4571
4572 self.update_selections(
4573 vec![Selection {
4574 id: self.newest_anchor_selection().id,
4575 start: cursor_in_editor,
4576 end: cursor_in_editor,
4577 reversed: false,
4578 goal: SelectionGoal::None,
4579 }],
4580 None,
4581 cx,
4582 );
4583 }
4584
4585 Some(rename)
4586 }
4587
4588 fn invalidate_rename_range(
4589 &mut self,
4590 buffer: &MultiBufferSnapshot,
4591 cx: &mut ViewContext<Self>,
4592 ) {
4593 if let Some(rename) = self.pending_rename.as_ref() {
4594 if self.selections.len() == 1 {
4595 let head = self.selections[0].head().to_offset(buffer);
4596 let range = rename.range.to_offset(buffer).to_inclusive();
4597 if range.contains(&head) {
4598 return;
4599 }
4600 }
4601 let rename = self.pending_rename.take().unwrap();
4602 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4603 self.clear_background_highlights::<Rename>(cx);
4604 }
4605 }
4606
4607 #[cfg(any(test, feature = "test-support"))]
4608 pub fn pending_rename(&self) -> Option<&RenameState> {
4609 self.pending_rename.as_ref()
4610 }
4611
4612 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4613 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4614 let buffer = self.buffer.read(cx).snapshot(cx);
4615 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4616 let is_valid = buffer
4617 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4618 .any(|entry| {
4619 entry.diagnostic.is_primary
4620 && !entry.range.is_empty()
4621 && entry.range.start == primary_range_start
4622 && entry.diagnostic.message == active_diagnostics.primary_message
4623 });
4624
4625 if is_valid != active_diagnostics.is_valid {
4626 active_diagnostics.is_valid = is_valid;
4627 let mut new_styles = HashMap::default();
4628 for (block_id, diagnostic) in &active_diagnostics.blocks {
4629 new_styles.insert(
4630 *block_id,
4631 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4632 );
4633 }
4634 self.display_map
4635 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4636 }
4637 }
4638 }
4639
4640 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4641 self.dismiss_diagnostics(cx);
4642 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4643 let buffer = self.buffer.read(cx).snapshot(cx);
4644
4645 let mut primary_range = None;
4646 let mut primary_message = None;
4647 let mut group_end = Point::zero();
4648 let diagnostic_group = buffer
4649 .diagnostic_group::<Point>(group_id)
4650 .map(|entry| {
4651 if entry.range.end > group_end {
4652 group_end = entry.range.end;
4653 }
4654 if entry.diagnostic.is_primary {
4655 primary_range = Some(entry.range.clone());
4656 primary_message = Some(entry.diagnostic.message.clone());
4657 }
4658 entry
4659 })
4660 .collect::<Vec<_>>();
4661 let primary_range = primary_range.unwrap();
4662 let primary_message = primary_message.unwrap();
4663 let primary_range =
4664 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4665
4666 let blocks = display_map
4667 .insert_blocks(
4668 diagnostic_group.iter().map(|entry| {
4669 let diagnostic = entry.diagnostic.clone();
4670 let message_height = diagnostic.message.lines().count() as u8;
4671 BlockProperties {
4672 position: buffer.anchor_after(entry.range.start),
4673 height: message_height,
4674 render: diagnostic_block_renderer(diagnostic, true),
4675 disposition: BlockDisposition::Below,
4676 }
4677 }),
4678 cx,
4679 )
4680 .into_iter()
4681 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4682 .collect();
4683
4684 Some(ActiveDiagnosticGroup {
4685 primary_range,
4686 primary_message,
4687 blocks,
4688 is_valid: true,
4689 })
4690 });
4691 }
4692
4693 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4694 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4695 self.display_map.update(cx, |display_map, cx| {
4696 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4697 });
4698 cx.notify();
4699 }
4700 }
4701
4702 fn build_columnar_selection(
4703 &mut self,
4704 display_map: &DisplaySnapshot,
4705 row: u32,
4706 columns: &Range<u32>,
4707 reversed: bool,
4708 ) -> Option<Selection<Point>> {
4709 let is_empty = columns.start == columns.end;
4710 let line_len = display_map.line_len(row);
4711 if columns.start < line_len || (is_empty && columns.start == line_len) {
4712 let start = DisplayPoint::new(row, columns.start);
4713 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4714 Some(Selection {
4715 id: post_inc(&mut self.next_selection_id),
4716 start: start.to_point(display_map),
4717 end: end.to_point(display_map),
4718 reversed,
4719 goal: SelectionGoal::ColumnRange {
4720 start: columns.start,
4721 end: columns.end,
4722 },
4723 })
4724 } else {
4725 None
4726 }
4727 }
4728
4729 pub fn local_selections_in_range(
4730 &self,
4731 range: Range<Anchor>,
4732 display_map: &DisplaySnapshot,
4733 ) -> Vec<Selection<Point>> {
4734 let buffer = &display_map.buffer_snapshot;
4735
4736 let start_ix = match self
4737 .selections
4738 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4739 {
4740 Ok(ix) | Err(ix) => ix,
4741 };
4742 let end_ix = match self
4743 .selections
4744 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4745 {
4746 Ok(ix) => ix + 1,
4747 Err(ix) => ix,
4748 };
4749
4750 fn point_selection(
4751 selection: &Selection<Anchor>,
4752 buffer: &MultiBufferSnapshot,
4753 ) -> Selection<Point> {
4754 let start = selection.start.to_point(&buffer);
4755 let end = selection.end.to_point(&buffer);
4756 Selection {
4757 id: selection.id,
4758 start,
4759 end,
4760 reversed: selection.reversed,
4761 goal: selection.goal,
4762 }
4763 }
4764
4765 self.selections[start_ix..end_ix]
4766 .iter()
4767 .chain(
4768 self.pending_selection
4769 .as_ref()
4770 .map(|pending| &pending.selection),
4771 )
4772 .map(|s| point_selection(s, &buffer))
4773 .collect()
4774 }
4775
4776 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4777 where
4778 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4779 {
4780 let buffer = self.buffer.read(cx).snapshot(cx);
4781 let mut selections = self
4782 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4783 .peekable();
4784
4785 let mut pending_selection = self.pending_selection::<D>(&buffer);
4786
4787 iter::from_fn(move || {
4788 if let Some(pending) = pending_selection.as_mut() {
4789 while let Some(next_selection) = selections.peek() {
4790 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4791 let next_selection = selections.next().unwrap();
4792 if next_selection.start < pending.start {
4793 pending.start = next_selection.start;
4794 }
4795 if next_selection.end > pending.end {
4796 pending.end = next_selection.end;
4797 }
4798 } else if next_selection.end < pending.start {
4799 return selections.next();
4800 } else {
4801 break;
4802 }
4803 }
4804
4805 pending_selection.take()
4806 } else {
4807 selections.next()
4808 }
4809 })
4810 .collect()
4811 }
4812
4813 fn resolve_selections<'a, D, I>(
4814 &self,
4815 selections: I,
4816 snapshot: &MultiBufferSnapshot,
4817 ) -> impl 'a + Iterator<Item = Selection<D>>
4818 where
4819 D: TextDimension + Ord + Sub<D, Output = D>,
4820 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4821 {
4822 let (to_summarize, selections) = selections.into_iter().tee();
4823 let mut summaries = snapshot
4824 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4825 .into_iter();
4826 selections.map(move |s| Selection {
4827 id: s.id,
4828 start: summaries.next().unwrap(),
4829 end: summaries.next().unwrap(),
4830 reversed: s.reversed,
4831 goal: s.goal,
4832 })
4833 }
4834
4835 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4836 &self,
4837 snapshot: &MultiBufferSnapshot,
4838 ) -> Option<Selection<D>> {
4839 self.pending_selection
4840 .as_ref()
4841 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4842 }
4843
4844 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4845 &self,
4846 selection: &Selection<Anchor>,
4847 buffer: &MultiBufferSnapshot,
4848 ) -> Selection<D> {
4849 Selection {
4850 id: selection.id,
4851 start: selection.start.summary::<D>(&buffer),
4852 end: selection.end.summary::<D>(&buffer),
4853 reversed: selection.reversed,
4854 goal: selection.goal,
4855 }
4856 }
4857
4858 fn selection_count<'a>(&self) -> usize {
4859 let mut count = self.selections.len();
4860 if self.pending_selection.is_some() {
4861 count += 1;
4862 }
4863 count
4864 }
4865
4866 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4867 &self,
4868 cx: &AppContext,
4869 ) -> Selection<D> {
4870 let snapshot = self.buffer.read(cx).read(cx);
4871 self.selections
4872 .iter()
4873 .min_by_key(|s| s.id)
4874 .map(|selection| self.resolve_selection(selection, &snapshot))
4875 .or_else(|| self.pending_selection(&snapshot))
4876 .unwrap()
4877 }
4878
4879 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4880 &self,
4881 cx: &AppContext,
4882 ) -> Selection<D> {
4883 self.resolve_selection(
4884 self.newest_anchor_selection(),
4885 &self.buffer.read(cx).read(cx),
4886 )
4887 }
4888
4889 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4890 &self,
4891 snapshot: &MultiBufferSnapshot,
4892 ) -> Selection<D> {
4893 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4894 }
4895
4896 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4897 self.pending_selection
4898 .as_ref()
4899 .map(|s| &s.selection)
4900 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4901 .unwrap()
4902 }
4903
4904 pub fn update_selections<T>(
4905 &mut self,
4906 mut selections: Vec<Selection<T>>,
4907 autoscroll: Option<Autoscroll>,
4908 cx: &mut ViewContext<Self>,
4909 ) where
4910 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4911 {
4912 let buffer = self.buffer.read(cx).snapshot(cx);
4913 selections.sort_unstable_by_key(|s| s.start);
4914
4915 // Merge overlapping selections.
4916 let mut i = 1;
4917 while i < selections.len() {
4918 if selections[i - 1].end >= selections[i].start {
4919 let removed = selections.remove(i);
4920 if removed.start < selections[i - 1].start {
4921 selections[i - 1].start = removed.start;
4922 }
4923 if removed.end > selections[i - 1].end {
4924 selections[i - 1].end = removed.end;
4925 }
4926 } else {
4927 i += 1;
4928 }
4929 }
4930
4931 if let Some(autoscroll) = autoscroll {
4932 self.request_autoscroll(autoscroll, cx);
4933 }
4934
4935 self.set_selections(
4936 Arc::from_iter(selections.into_iter().map(|selection| {
4937 let end_bias = if selection.end > selection.start {
4938 Bias::Left
4939 } else {
4940 Bias::Right
4941 };
4942 Selection {
4943 id: selection.id,
4944 start: buffer.anchor_after(selection.start),
4945 end: buffer.anchor_at(selection.end, end_bias),
4946 reversed: selection.reversed,
4947 goal: selection.goal,
4948 }
4949 })),
4950 None,
4951 cx,
4952 );
4953 }
4954
4955 /// Compute new ranges for any selections that were located in excerpts that have
4956 /// since been removed.
4957 ///
4958 /// Returns a `HashMap` indicating which selections whose former head position
4959 /// was no longer present. The keys of the map are selection ids. The values are
4960 /// the id of the new excerpt where the head of the selection has been moved.
4961 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4962 let snapshot = self.buffer.read(cx).read(cx);
4963 let anchors_with_status = snapshot.refresh_anchors(
4964 self.selections
4965 .iter()
4966 .flat_map(|selection| [&selection.start, &selection.end]),
4967 );
4968 let offsets =
4969 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4970 assert_eq!(anchors_with_status.len(), 2 * self.selections.len());
4971 assert_eq!(offsets.len(), anchors_with_status.len());
4972
4973 let offsets = offsets.chunks(2);
4974 let statuses = anchors_with_status
4975 .chunks(2)
4976 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4977
4978 let mut selections_with_lost_position = HashMap::default();
4979 let new_selections = offsets
4980 .zip(statuses)
4981 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4982 let selection = &self.selections[selection_ix];
4983 let kept_head = if selection.reversed {
4984 kept_start
4985 } else {
4986 kept_end
4987 };
4988 if !kept_head {
4989 selections_with_lost_position
4990 .insert(selection.id, selection.head().excerpt_id.clone());
4991 }
4992
4993 Selection {
4994 id: selection.id,
4995 start: offsets[0],
4996 end: offsets[1],
4997 reversed: selection.reversed,
4998 goal: selection.goal,
4999 }
5000 })
5001 .collect();
5002 drop(snapshot);
5003 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5004 selections_with_lost_position
5005 }
5006
5007 fn set_selections(
5008 &mut self,
5009 selections: Arc<[Selection<Anchor>]>,
5010 pending_selection: Option<PendingSelection>,
5011 cx: &mut ViewContext<Self>,
5012 ) {
5013 assert!(
5014 !selections.is_empty() || pending_selection.is_some(),
5015 "must have at least one selection"
5016 );
5017
5018 let old_cursor_position = self.newest_anchor_selection().head();
5019
5020 self.selections = selections;
5021 self.pending_selection = pending_selection;
5022 if self.focused {
5023 self.buffer.update(cx, |buffer, cx| {
5024 buffer.set_active_selections(&self.selections, cx)
5025 });
5026 }
5027
5028 let display_map = self
5029 .display_map
5030 .update(cx, |display_map, cx| display_map.snapshot(cx));
5031 let buffer = &display_map.buffer_snapshot;
5032 self.add_selections_state = None;
5033 self.select_next_state = None;
5034 self.select_larger_syntax_node_stack.clear();
5035 self.autoclose_stack.invalidate(&self.selections, &buffer);
5036 self.snippet_stack.invalidate(&self.selections, &buffer);
5037 self.invalidate_rename_range(&buffer, cx);
5038
5039 let new_cursor_position = self.newest_anchor_selection().head();
5040
5041 self.push_to_nav_history(
5042 old_cursor_position.clone(),
5043 Some(new_cursor_position.to_point(&buffer)),
5044 cx,
5045 );
5046
5047 let completion_menu = match self.context_menu.as_mut() {
5048 Some(ContextMenu::Completions(menu)) => Some(menu),
5049 _ => {
5050 self.context_menu.take();
5051 None
5052 }
5053 };
5054
5055 if let Some(completion_menu) = completion_menu {
5056 let cursor_position = new_cursor_position.to_offset(&buffer);
5057 let (word_range, kind) =
5058 buffer.surrounding_word(completion_menu.initial_position.clone());
5059 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5060 {
5061 let query = Self::completion_query(&buffer, cursor_position);
5062 cx.background()
5063 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5064 self.show_completions(&ShowCompletions, cx);
5065 } else {
5066 self.hide_context_menu(cx);
5067 }
5068 }
5069
5070 if old_cursor_position.to_display_point(&display_map).row()
5071 != new_cursor_position.to_display_point(&display_map).row()
5072 {
5073 self.available_code_actions.take();
5074 }
5075 self.refresh_code_actions(cx);
5076 self.refresh_document_highlights(cx);
5077
5078 self.pause_cursor_blinking(cx);
5079 cx.emit(Event::SelectionsChanged);
5080 }
5081
5082 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5083 self.autoscroll_request = Some(autoscroll);
5084 cx.notify();
5085 }
5086
5087 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5088 self.start_transaction_at(Instant::now(), cx);
5089 }
5090
5091 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5092 self.end_selection(cx);
5093 if let Some(tx_id) = self
5094 .buffer
5095 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5096 {
5097 self.selection_history
5098 .insert(tx_id, (self.selections.clone(), None));
5099 }
5100 }
5101
5102 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5103 self.end_transaction_at(Instant::now(), cx);
5104 }
5105
5106 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5107 if let Some(tx_id) = self
5108 .buffer
5109 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5110 {
5111 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5112 *end_selections = Some(self.selections.clone());
5113 } else {
5114 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5115 }
5116 }
5117 }
5118
5119 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5120 log::info!("Editor::page_up");
5121 }
5122
5123 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5124 log::info!("Editor::page_down");
5125 }
5126
5127 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5128 let mut fold_ranges = Vec::new();
5129
5130 let selections = self.local_selections::<Point>(cx);
5131 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5132 for selection in selections {
5133 let range = selection.display_range(&display_map).sorted();
5134 let buffer_start_row = range.start.to_point(&display_map).row;
5135
5136 for row in (0..=range.end.row()).rev() {
5137 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5138 let fold_range = self.foldable_range_for_line(&display_map, row);
5139 if fold_range.end.row >= buffer_start_row {
5140 fold_ranges.push(fold_range);
5141 if row <= range.start.row() {
5142 break;
5143 }
5144 }
5145 }
5146 }
5147 }
5148
5149 self.fold_ranges(fold_ranges, cx);
5150 }
5151
5152 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5153 let selections = self.local_selections::<Point>(cx);
5154 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5155 let buffer = &display_map.buffer_snapshot;
5156 let ranges = selections
5157 .iter()
5158 .map(|s| {
5159 let range = s.display_range(&display_map).sorted();
5160 let mut start = range.start.to_point(&display_map);
5161 let mut end = range.end.to_point(&display_map);
5162 start.column = 0;
5163 end.column = buffer.line_len(end.row);
5164 start..end
5165 })
5166 .collect::<Vec<_>>();
5167 self.unfold_ranges(ranges, cx);
5168 }
5169
5170 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5171 let max_point = display_map.max_point();
5172 if display_row >= max_point.row() {
5173 false
5174 } else {
5175 let (start_indent, is_blank) = display_map.line_indent(display_row);
5176 if is_blank {
5177 false
5178 } else {
5179 for display_row in display_row + 1..=max_point.row() {
5180 let (indent, is_blank) = display_map.line_indent(display_row);
5181 if !is_blank {
5182 return indent > start_indent;
5183 }
5184 }
5185 false
5186 }
5187 }
5188 }
5189
5190 fn foldable_range_for_line(
5191 &self,
5192 display_map: &DisplaySnapshot,
5193 start_row: u32,
5194 ) -> Range<Point> {
5195 let max_point = display_map.max_point();
5196
5197 let (start_indent, _) = display_map.line_indent(start_row);
5198 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5199 let mut end = None;
5200 for row in start_row + 1..=max_point.row() {
5201 let (indent, is_blank) = display_map.line_indent(row);
5202 if !is_blank && indent <= start_indent {
5203 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5204 break;
5205 }
5206 }
5207
5208 let end = end.unwrap_or(max_point);
5209 return start.to_point(display_map)..end.to_point(display_map);
5210 }
5211
5212 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5213 let selections = self.local_selections::<Point>(cx);
5214 let ranges = selections.into_iter().map(|s| s.start..s.end);
5215 self.fold_ranges(ranges, cx);
5216 }
5217
5218 fn fold_ranges<T: ToOffset>(
5219 &mut self,
5220 ranges: impl IntoIterator<Item = Range<T>>,
5221 cx: &mut ViewContext<Self>,
5222 ) {
5223 let mut ranges = ranges.into_iter().peekable();
5224 if ranges.peek().is_some() {
5225 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5226 self.request_autoscroll(Autoscroll::Fit, cx);
5227 cx.notify();
5228 }
5229 }
5230
5231 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5232 if !ranges.is_empty() {
5233 self.display_map
5234 .update(cx, |map, cx| map.unfold(ranges, cx));
5235 self.request_autoscroll(Autoscroll::Fit, cx);
5236 cx.notify();
5237 }
5238 }
5239
5240 pub fn insert_blocks(
5241 &mut self,
5242 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5243 cx: &mut ViewContext<Self>,
5244 ) -> Vec<BlockId> {
5245 let blocks = self
5246 .display_map
5247 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5248 self.request_autoscroll(Autoscroll::Fit, cx);
5249 blocks
5250 }
5251
5252 pub fn replace_blocks(
5253 &mut self,
5254 blocks: HashMap<BlockId, RenderBlock>,
5255 cx: &mut ViewContext<Self>,
5256 ) {
5257 self.display_map
5258 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5259 self.request_autoscroll(Autoscroll::Fit, cx);
5260 }
5261
5262 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5263 self.display_map.update(cx, |display_map, cx| {
5264 display_map.remove_blocks(block_ids, cx)
5265 });
5266 }
5267
5268 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5269 self.display_map
5270 .update(cx, |map, cx| map.snapshot(cx))
5271 .longest_row()
5272 }
5273
5274 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5275 self.display_map
5276 .update(cx, |map, cx| map.snapshot(cx))
5277 .max_point()
5278 }
5279
5280 pub fn text(&self, cx: &AppContext) -> String {
5281 self.buffer.read(cx).read(cx).text()
5282 }
5283
5284 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5285 self.buffer
5286 .read(cx)
5287 .as_singleton()
5288 .expect("you can only call set_text on editors for singleton buffers")
5289 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5290 }
5291
5292 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5293 self.display_map
5294 .update(cx, |map, cx| map.snapshot(cx))
5295 .text()
5296 }
5297
5298 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5299 let language = self.language(cx);
5300 let settings = cx.app_state::<Settings>();
5301 let mode = self
5302 .soft_wrap_mode_override
5303 .unwrap_or_else(|| settings.soft_wrap(language));
5304 match mode {
5305 settings::SoftWrap::None => SoftWrap::None,
5306 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5307 settings::SoftWrap::PreferredLineLength => {
5308 SoftWrap::Column(settings.preferred_line_length(language))
5309 }
5310 }
5311 }
5312
5313 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5314 self.soft_wrap_mode_override = Some(mode);
5315 cx.notify();
5316 }
5317
5318 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5319 self.display_map
5320 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5321 }
5322
5323 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5324 self.highlighted_rows = rows;
5325 }
5326
5327 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5328 self.highlighted_rows.clone()
5329 }
5330
5331 pub fn highlight_background<T: 'static>(
5332 &mut self,
5333 ranges: Vec<Range<Anchor>>,
5334 color: Color,
5335 cx: &mut ViewContext<Self>,
5336 ) {
5337 self.background_highlights
5338 .insert(TypeId::of::<T>(), (color, ranges));
5339 cx.notify();
5340 }
5341
5342 pub fn clear_background_highlights<T: 'static>(
5343 &mut self,
5344 cx: &mut ViewContext<Self>,
5345 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5346 cx.notify();
5347 self.background_highlights.remove(&TypeId::of::<T>())
5348 }
5349
5350 #[cfg(feature = "test-support")]
5351 pub fn all_background_highlights(
5352 &mut self,
5353 cx: &mut ViewContext<Self>,
5354 ) -> Vec<(Range<DisplayPoint>, Color)> {
5355 let snapshot = self.snapshot(cx);
5356 let buffer = &snapshot.buffer_snapshot;
5357 let start = buffer.anchor_before(0);
5358 let end = buffer.anchor_after(buffer.len());
5359 self.background_highlights_in_range(start..end, &snapshot)
5360 }
5361
5362 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5363 self.background_highlights
5364 .get(&TypeId::of::<T>())
5365 .map(|(color, ranges)| (*color, ranges.as_slice()))
5366 }
5367
5368 pub fn background_highlights_in_range(
5369 &self,
5370 search_range: Range<Anchor>,
5371 display_snapshot: &DisplaySnapshot,
5372 ) -> Vec<(Range<DisplayPoint>, Color)> {
5373 let mut results = Vec::new();
5374 let buffer = &display_snapshot.buffer_snapshot;
5375 for (color, ranges) in self.background_highlights.values() {
5376 let start_ix = match ranges.binary_search_by(|probe| {
5377 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5378 if cmp.is_gt() {
5379 Ordering::Greater
5380 } else {
5381 Ordering::Less
5382 }
5383 }) {
5384 Ok(i) | Err(i) => i,
5385 };
5386 for range in &ranges[start_ix..] {
5387 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5388 break;
5389 }
5390 let start = range
5391 .start
5392 .to_point(buffer)
5393 .to_display_point(display_snapshot);
5394 let end = range
5395 .end
5396 .to_point(buffer)
5397 .to_display_point(display_snapshot);
5398 results.push((start..end, *color))
5399 }
5400 }
5401 results
5402 }
5403
5404 pub fn highlight_text<T: 'static>(
5405 &mut self,
5406 ranges: Vec<Range<Anchor>>,
5407 style: HighlightStyle,
5408 cx: &mut ViewContext<Self>,
5409 ) {
5410 self.display_map.update(cx, |map, _| {
5411 map.highlight_text(TypeId::of::<T>(), ranges, style)
5412 });
5413 cx.notify();
5414 }
5415
5416 pub fn clear_text_highlights<T: 'static>(
5417 &mut self,
5418 cx: &mut ViewContext<Self>,
5419 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5420 cx.notify();
5421 self.display_map
5422 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5423 }
5424
5425 fn next_blink_epoch(&mut self) -> usize {
5426 self.blink_epoch += 1;
5427 self.blink_epoch
5428 }
5429
5430 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5431 if !self.focused {
5432 return;
5433 }
5434
5435 self.show_local_cursors = true;
5436 cx.notify();
5437
5438 let epoch = self.next_blink_epoch();
5439 cx.spawn(|this, mut cx| {
5440 let this = this.downgrade();
5441 async move {
5442 Timer::after(CURSOR_BLINK_INTERVAL).await;
5443 if let Some(this) = this.upgrade(&cx) {
5444 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5445 }
5446 }
5447 })
5448 .detach();
5449 }
5450
5451 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5452 if epoch == self.blink_epoch {
5453 self.blinking_paused = false;
5454 self.blink_cursors(epoch, cx);
5455 }
5456 }
5457
5458 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5459 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5460 self.show_local_cursors = !self.show_local_cursors;
5461 cx.notify();
5462
5463 let epoch = self.next_blink_epoch();
5464 cx.spawn(|this, mut cx| {
5465 let this = this.downgrade();
5466 async move {
5467 Timer::after(CURSOR_BLINK_INTERVAL).await;
5468 if let Some(this) = this.upgrade(&cx) {
5469 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5470 }
5471 }
5472 })
5473 .detach();
5474 }
5475 }
5476
5477 pub fn show_local_cursors(&self) -> bool {
5478 self.show_local_cursors
5479 }
5480
5481 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5482 cx.notify();
5483 }
5484
5485 fn on_buffer_event(
5486 &mut self,
5487 _: ModelHandle<MultiBuffer>,
5488 event: &language::Event,
5489 cx: &mut ViewContext<Self>,
5490 ) {
5491 match event {
5492 language::Event::Edited => {
5493 self.refresh_active_diagnostics(cx);
5494 self.refresh_code_actions(cx);
5495 cx.emit(Event::Edited);
5496 }
5497 language::Event::Dirtied => cx.emit(Event::Dirtied),
5498 language::Event::Saved => cx.emit(Event::Saved),
5499 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5500 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5501 language::Event::Closed => cx.emit(Event::Closed),
5502 language::Event::DiagnosticsUpdated => {
5503 self.refresh_active_diagnostics(cx);
5504 }
5505 _ => {}
5506 }
5507 }
5508
5509 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5510 cx.notify();
5511 }
5512
5513 pub fn set_searchable(&mut self, searchable: bool) {
5514 self.searchable = searchable;
5515 }
5516
5517 pub fn searchable(&self) -> bool {
5518 self.searchable
5519 }
5520
5521 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5522 let active_item = workspace.active_item(cx);
5523 let editor_handle = if let Some(editor) = active_item
5524 .as_ref()
5525 .and_then(|item| item.act_as::<Self>(cx))
5526 {
5527 editor
5528 } else {
5529 cx.propagate_action();
5530 return;
5531 };
5532
5533 let editor = editor_handle.read(cx);
5534 let buffer = editor.buffer.read(cx);
5535 if buffer.is_singleton() {
5536 cx.propagate_action();
5537 return;
5538 }
5539
5540 let mut new_selections_by_buffer = HashMap::default();
5541 for selection in editor.local_selections::<usize>(cx) {
5542 for (buffer, mut range) in
5543 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5544 {
5545 if selection.reversed {
5546 mem::swap(&mut range.start, &mut range.end);
5547 }
5548 new_selections_by_buffer
5549 .entry(buffer)
5550 .or_insert(Vec::new())
5551 .push(range)
5552 }
5553 }
5554
5555 editor_handle.update(cx, |editor, cx| {
5556 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5557 });
5558 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5559 nav_history.borrow_mut().disable();
5560
5561 // We defer the pane interaction because we ourselves are a workspace item
5562 // and activating a new item causes the pane to call a method on us reentrantly,
5563 // which panics if we're on the stack.
5564 cx.defer(move |workspace, cx| {
5565 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5566 let buffer = BufferItemHandle(buffer);
5567 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5568 workspace.activate_next_pane(cx);
5569 }
5570
5571 let editor = workspace
5572 .open_item(buffer, cx)
5573 .downcast::<Editor>()
5574 .unwrap();
5575
5576 editor.update(cx, |editor, cx| {
5577 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5578 });
5579 }
5580
5581 nav_history.borrow_mut().enable();
5582 });
5583 }
5584}
5585
5586impl EditorSnapshot {
5587 pub fn is_focused(&self) -> bool {
5588 self.is_focused
5589 }
5590
5591 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5592 self.placeholder_text.as_ref()
5593 }
5594
5595 pub fn scroll_position(&self) -> Vector2F {
5596 compute_scroll_position(
5597 &self.display_snapshot,
5598 self.scroll_position,
5599 &self.scroll_top_anchor,
5600 )
5601 }
5602}
5603
5604impl Deref for EditorSnapshot {
5605 type Target = DisplaySnapshot;
5606
5607 fn deref(&self) -> &Self::Target {
5608 &self.display_snapshot
5609 }
5610}
5611
5612fn compute_scroll_position(
5613 snapshot: &DisplaySnapshot,
5614 mut scroll_position: Vector2F,
5615 scroll_top_anchor: &Option<Anchor>,
5616) -> Vector2F {
5617 if let Some(anchor) = scroll_top_anchor {
5618 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5619 scroll_position.set_y(scroll_top + scroll_position.y());
5620 } else {
5621 scroll_position.set_y(0.);
5622 }
5623 scroll_position
5624}
5625
5626#[derive(Copy, Clone)]
5627pub enum Event {
5628 Activate,
5629 Edited,
5630 Blurred,
5631 Dirtied,
5632 Saved,
5633 TitleChanged,
5634 SelectionsChanged,
5635 Closed,
5636}
5637
5638impl Entity for Editor {
5639 type Event = Event;
5640}
5641
5642impl View for Editor {
5643 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5644 let style = self.style(cx);
5645 self.display_map.update(cx, |map, cx| {
5646 map.set_font(style.text.font_id, style.text.font_size, cx)
5647 });
5648 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5649 }
5650
5651 fn ui_name() -> &'static str {
5652 "Editor"
5653 }
5654
5655 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5656 if let Some(rename) = self.pending_rename.as_ref() {
5657 cx.focus(&rename.editor);
5658 } else {
5659 self.focused = true;
5660 self.blink_cursors(self.blink_epoch, cx);
5661 self.buffer.update(cx, |buffer, cx| {
5662 buffer.finalize_last_transaction(cx);
5663 buffer.set_active_selections(&self.selections, cx)
5664 });
5665 }
5666 }
5667
5668 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5669 self.focused = false;
5670 self.buffer
5671 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5672 self.hide_context_menu(cx);
5673 cx.emit(Event::Blurred);
5674 cx.notify();
5675 }
5676
5677 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5678 let mut cx = Self::default_keymap_context();
5679 let mode = match self.mode {
5680 EditorMode::SingleLine => "single_line",
5681 EditorMode::AutoHeight { .. } => "auto_height",
5682 EditorMode::Full => "full",
5683 };
5684 cx.map.insert("mode".into(), mode.into());
5685 if self.pending_rename.is_some() {
5686 cx.set.insert("renaming".into());
5687 }
5688 match self.context_menu.as_ref() {
5689 Some(ContextMenu::Completions(_)) => {
5690 cx.set.insert("showing_completions".into());
5691 }
5692 Some(ContextMenu::CodeActions(_)) => {
5693 cx.set.insert("showing_code_actions".into());
5694 }
5695 None => {}
5696 }
5697 cx
5698 }
5699}
5700
5701fn build_style(
5702 settings: &Settings,
5703 get_field_editor_theme: Option<GetFieldEditorTheme>,
5704 override_text_style: Option<&OverrideTextStyle>,
5705 cx: &AppContext,
5706) -> EditorStyle {
5707 let font_cache = cx.font_cache();
5708
5709 let mut theme = settings.theme.editor.clone();
5710 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5711 let field_editor_theme = get_field_editor_theme(&settings.theme);
5712 theme.text_color = field_editor_theme.text.color;
5713 theme.selection = field_editor_theme.selection;
5714 theme.background = field_editor_theme
5715 .container
5716 .background_color
5717 .unwrap_or_default();
5718 EditorStyle {
5719 text: field_editor_theme.text,
5720 placeholder_text: field_editor_theme.placeholder_text,
5721 theme,
5722 }
5723 } else {
5724 let font_family_id = settings.buffer_font_family;
5725 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5726 let font_properties = Default::default();
5727 let font_id = font_cache
5728 .select_font(font_family_id, &font_properties)
5729 .unwrap();
5730 let font_size = settings.buffer_font_size;
5731 EditorStyle {
5732 text: TextStyle {
5733 color: settings.theme.editor.text_color,
5734 font_family_name,
5735 font_family_id,
5736 font_id,
5737 font_size,
5738 font_properties,
5739 underline: Default::default(),
5740 },
5741 placeholder_text: None,
5742 theme,
5743 }
5744 };
5745
5746 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5747 if let Some(highlighted) = style
5748 .text
5749 .clone()
5750 .highlight(highlight_style, font_cache)
5751 .log_err()
5752 {
5753 style.text = highlighted;
5754 }
5755 }
5756
5757 style
5758}
5759
5760impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5761 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5762 let start = self.start.to_point(buffer);
5763 let end = self.end.to_point(buffer);
5764 if self.reversed {
5765 end..start
5766 } else {
5767 start..end
5768 }
5769 }
5770
5771 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5772 let start = self.start.to_offset(buffer);
5773 let end = self.end.to_offset(buffer);
5774 if self.reversed {
5775 end..start
5776 } else {
5777 start..end
5778 }
5779 }
5780
5781 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5782 let start = self
5783 .start
5784 .to_point(&map.buffer_snapshot)
5785 .to_display_point(map);
5786 let end = self
5787 .end
5788 .to_point(&map.buffer_snapshot)
5789 .to_display_point(map);
5790 if self.reversed {
5791 end..start
5792 } else {
5793 start..end
5794 }
5795 }
5796
5797 fn spanned_rows(
5798 &self,
5799 include_end_if_at_line_start: bool,
5800 map: &DisplaySnapshot,
5801 ) -> Range<u32> {
5802 let start = self.start.to_point(&map.buffer_snapshot);
5803 let mut end = self.end.to_point(&map.buffer_snapshot);
5804 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5805 end.row -= 1;
5806 }
5807
5808 let buffer_start = map.prev_line_boundary(start).0;
5809 let buffer_end = map.next_line_boundary(end).0;
5810 buffer_start.row..buffer_end.row + 1
5811 }
5812}
5813
5814impl<T: InvalidationRegion> InvalidationStack<T> {
5815 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5816 where
5817 S: Clone + ToOffset,
5818 {
5819 while let Some(region) = self.last() {
5820 let all_selections_inside_invalidation_ranges =
5821 if selections.len() == region.ranges().len() {
5822 selections
5823 .iter()
5824 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5825 .all(|(selection, invalidation_range)| {
5826 let head = selection.head().to_offset(&buffer);
5827 invalidation_range.start <= head && invalidation_range.end >= head
5828 })
5829 } else {
5830 false
5831 };
5832
5833 if all_selections_inside_invalidation_ranges {
5834 break;
5835 } else {
5836 self.pop();
5837 }
5838 }
5839 }
5840}
5841
5842impl<T> Default for InvalidationStack<T> {
5843 fn default() -> Self {
5844 Self(Default::default())
5845 }
5846}
5847
5848impl<T> Deref for InvalidationStack<T> {
5849 type Target = Vec<T>;
5850
5851 fn deref(&self) -> &Self::Target {
5852 &self.0
5853 }
5854}
5855
5856impl<T> DerefMut for InvalidationStack<T> {
5857 fn deref_mut(&mut self) -> &mut Self::Target {
5858 &mut self.0
5859 }
5860}
5861
5862impl InvalidationRegion for BracketPairState {
5863 fn ranges(&self) -> &[Range<Anchor>] {
5864 &self.ranges
5865 }
5866}
5867
5868impl InvalidationRegion for SnippetState {
5869 fn ranges(&self) -> &[Range<Anchor>] {
5870 &self.ranges[self.active_index]
5871 }
5872}
5873
5874impl Deref for EditorStyle {
5875 type Target = theme::Editor;
5876
5877 fn deref(&self) -> &Self::Target {
5878 &self.theme
5879 }
5880}
5881
5882pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5883 let mut highlighted_lines = Vec::new();
5884 for line in diagnostic.message.lines() {
5885 highlighted_lines.push(highlight_diagnostic_message(line));
5886 }
5887
5888 Arc::new(move |cx: &BlockContext| {
5889 let settings = cx.app_state::<Settings>();
5890 let theme = &settings.theme.editor;
5891 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5892 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5893 Flex::column()
5894 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5895 Label::new(
5896 line.clone(),
5897 style.message.clone().with_font_size(font_size),
5898 )
5899 .with_highlights(highlights.clone())
5900 .contained()
5901 .with_margin_left(cx.anchor_x)
5902 .boxed()
5903 }))
5904 .aligned()
5905 .left()
5906 .boxed()
5907 })
5908}
5909
5910pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5911 let mut message_without_backticks = String::new();
5912 let mut prev_offset = 0;
5913 let mut inside_block = false;
5914 let mut highlights = Vec::new();
5915 for (match_ix, (offset, _)) in message
5916 .match_indices('`')
5917 .chain([(message.len(), "")])
5918 .enumerate()
5919 {
5920 message_without_backticks.push_str(&message[prev_offset..offset]);
5921 if inside_block {
5922 highlights.extend(prev_offset - match_ix..offset - match_ix);
5923 }
5924
5925 inside_block = !inside_block;
5926 prev_offset = offset + 1;
5927 }
5928
5929 (message_without_backticks, highlights)
5930}
5931
5932pub fn diagnostic_style(
5933 severity: DiagnosticSeverity,
5934 valid: bool,
5935 theme: &theme::Editor,
5936) -> DiagnosticStyle {
5937 match (severity, valid) {
5938 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5939 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5940 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5941 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5942 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5943 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5944 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5945 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5946 _ => theme.invalid_hint_diagnostic.clone(),
5947 }
5948}
5949
5950pub fn combine_syntax_and_fuzzy_match_highlights(
5951 text: &str,
5952 default_style: HighlightStyle,
5953 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5954 match_indices: &[usize],
5955) -> Vec<(Range<usize>, HighlightStyle)> {
5956 let mut result = Vec::new();
5957 let mut match_indices = match_indices.iter().copied().peekable();
5958
5959 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5960 {
5961 syntax_highlight.weight = None;
5962
5963 // Add highlights for any fuzzy match characters before the next
5964 // syntax highlight range.
5965 while let Some(&match_index) = match_indices.peek() {
5966 if match_index >= range.start {
5967 break;
5968 }
5969 match_indices.next();
5970 let end_index = char_ix_after(match_index, text);
5971 let mut match_style = default_style;
5972 match_style.weight = Some(fonts::Weight::BOLD);
5973 result.push((match_index..end_index, match_style));
5974 }
5975
5976 if range.start == usize::MAX {
5977 break;
5978 }
5979
5980 // Add highlights for any fuzzy match characters within the
5981 // syntax highlight range.
5982 let mut offset = range.start;
5983 while let Some(&match_index) = match_indices.peek() {
5984 if match_index >= range.end {
5985 break;
5986 }
5987
5988 match_indices.next();
5989 if match_index > offset {
5990 result.push((offset..match_index, syntax_highlight));
5991 }
5992
5993 let mut end_index = char_ix_after(match_index, text);
5994 while let Some(&next_match_index) = match_indices.peek() {
5995 if next_match_index == end_index && next_match_index < range.end {
5996 end_index = char_ix_after(next_match_index, text);
5997 match_indices.next();
5998 } else {
5999 break;
6000 }
6001 }
6002
6003 let mut match_style = syntax_highlight;
6004 match_style.weight = Some(fonts::Weight::BOLD);
6005 result.push((match_index..end_index, match_style));
6006 offset = end_index;
6007 }
6008
6009 if offset < range.end {
6010 result.push((offset..range.end, syntax_highlight));
6011 }
6012 }
6013
6014 fn char_ix_after(ix: usize, text: &str) -> usize {
6015 ix + text[ix..].chars().next().unwrap().len_utf8()
6016 }
6017
6018 result
6019}
6020
6021pub fn styled_runs_for_code_label<'a>(
6022 label: &'a CodeLabel,
6023 syntax_theme: &'a theme::SyntaxTheme,
6024) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6025 let fade_out = HighlightStyle {
6026 fade_out: Some(0.35),
6027 ..Default::default()
6028 };
6029
6030 let mut prev_end = label.filter_range.end;
6031 label
6032 .runs
6033 .iter()
6034 .enumerate()
6035 .flat_map(move |(ix, (range, highlight_id))| {
6036 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6037 style
6038 } else {
6039 return Default::default();
6040 };
6041 let mut muted_style = style.clone();
6042 muted_style.highlight(fade_out);
6043
6044 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6045 if range.start >= label.filter_range.end {
6046 if range.start > prev_end {
6047 runs.push((prev_end..range.start, fade_out));
6048 }
6049 runs.push((range.clone(), muted_style));
6050 } else if range.end <= label.filter_range.end {
6051 runs.push((range.clone(), style));
6052 } else {
6053 runs.push((range.start..label.filter_range.end, style));
6054 runs.push((label.filter_range.end..range.end, muted_style));
6055 }
6056 prev_end = cmp::max(prev_end, range.end);
6057
6058 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6059 runs.push((prev_end..label.text.len(), fade_out));
6060 }
6061
6062 runs
6063 })
6064}
6065
6066#[cfg(test)]
6067mod tests {
6068 use super::*;
6069 use language::{LanguageConfig, LanguageServerConfig};
6070 use lsp::FakeLanguageServer;
6071 use project::FakeFs;
6072 use smol::stream::StreamExt;
6073 use std::{cell::RefCell, rc::Rc, time::Instant};
6074 use text::Point;
6075 use unindent::Unindent;
6076 use util::test::sample_text;
6077
6078 #[gpui::test]
6079 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6080 populate_settings(cx);
6081 let mut now = Instant::now();
6082 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6083 let group_interval = buffer.read(cx).transaction_group_interval();
6084 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6085 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6086
6087 editor.update(cx, |editor, cx| {
6088 editor.start_transaction_at(now, cx);
6089 editor.select_ranges([2..4], None, cx);
6090 editor.insert("cd", cx);
6091 editor.end_transaction_at(now, cx);
6092 assert_eq!(editor.text(cx), "12cd56");
6093 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6094
6095 editor.start_transaction_at(now, cx);
6096 editor.select_ranges([4..5], None, cx);
6097 editor.insert("e", cx);
6098 editor.end_transaction_at(now, cx);
6099 assert_eq!(editor.text(cx), "12cde6");
6100 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6101
6102 now += group_interval + Duration::from_millis(1);
6103 editor.select_ranges([2..2], None, cx);
6104
6105 // Simulate an edit in another editor
6106 buffer.update(cx, |buffer, cx| {
6107 buffer.start_transaction_at(now, cx);
6108 buffer.edit([0..1], "a", cx);
6109 buffer.edit([1..1], "b", cx);
6110 buffer.end_transaction_at(now, cx);
6111 });
6112
6113 assert_eq!(editor.text(cx), "ab2cde6");
6114 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6115
6116 // Last transaction happened past the group interval in a different editor.
6117 // Undo it individually and don't restore selections.
6118 editor.undo(&Undo, cx);
6119 assert_eq!(editor.text(cx), "12cde6");
6120 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6121
6122 // First two transactions happened within the group interval in this editor.
6123 // Undo them together and restore selections.
6124 editor.undo(&Undo, cx);
6125 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6126 assert_eq!(editor.text(cx), "123456");
6127 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6128
6129 // Redo the first two transactions together.
6130 editor.redo(&Redo, cx);
6131 assert_eq!(editor.text(cx), "12cde6");
6132 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6133
6134 // Redo the last transaction on its own.
6135 editor.redo(&Redo, cx);
6136 assert_eq!(editor.text(cx), "ab2cde6");
6137 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6138
6139 // Test empty transactions.
6140 editor.start_transaction_at(now, cx);
6141 editor.end_transaction_at(now, cx);
6142 editor.undo(&Undo, cx);
6143 assert_eq!(editor.text(cx), "12cde6");
6144 });
6145 }
6146
6147 #[gpui::test]
6148 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6149 populate_settings(cx);
6150 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6151 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6152
6153 editor.update(cx, |view, cx| {
6154 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6155 });
6156
6157 assert_eq!(
6158 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6159 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6160 );
6161
6162 editor.update(cx, |view, cx| {
6163 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6164 });
6165
6166 assert_eq!(
6167 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6168 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6169 );
6170
6171 editor.update(cx, |view, cx| {
6172 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6173 });
6174
6175 assert_eq!(
6176 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6177 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6178 );
6179
6180 editor.update(cx, |view, cx| {
6181 view.end_selection(cx);
6182 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6183 });
6184
6185 assert_eq!(
6186 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6187 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6188 );
6189
6190 editor.update(cx, |view, cx| {
6191 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6192 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6193 });
6194
6195 assert_eq!(
6196 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6197 [
6198 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6199 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6200 ]
6201 );
6202
6203 editor.update(cx, |view, cx| {
6204 view.end_selection(cx);
6205 });
6206
6207 assert_eq!(
6208 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6209 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6210 );
6211 }
6212
6213 #[gpui::test]
6214 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6215 populate_settings(cx);
6216 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6217 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6218
6219 view.update(cx, |view, cx| {
6220 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6221 assert_eq!(
6222 view.selected_display_ranges(cx),
6223 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6224 );
6225 });
6226
6227 view.update(cx, |view, cx| {
6228 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6229 assert_eq!(
6230 view.selected_display_ranges(cx),
6231 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6232 );
6233 });
6234
6235 view.update(cx, |view, cx| {
6236 view.cancel(&Cancel, cx);
6237 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6238 assert_eq!(
6239 view.selected_display_ranges(cx),
6240 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6241 );
6242 });
6243 }
6244
6245 #[gpui::test]
6246 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6247 populate_settings(cx);
6248 use workspace::ItemView;
6249 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6250 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6251
6252 cx.add_window(Default::default(), |cx| {
6253 let mut editor = build_editor(buffer.clone(), cx);
6254 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6255
6256 // Move the cursor a small distance.
6257 // Nothing is added to the navigation history.
6258 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6259 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6260 assert!(nav_history.borrow_mut().pop_backward().is_none());
6261
6262 // Move the cursor a large distance.
6263 // The history can jump back to the previous position.
6264 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6265 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6266 editor.navigate(nav_entry.data.unwrap(), cx);
6267 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6268 assert_eq!(
6269 editor.selected_display_ranges(cx),
6270 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6271 );
6272
6273 // Move the cursor a small distance via the mouse.
6274 // Nothing is added to the navigation history.
6275 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6276 editor.end_selection(cx);
6277 assert_eq!(
6278 editor.selected_display_ranges(cx),
6279 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6280 );
6281 assert!(nav_history.borrow_mut().pop_backward().is_none());
6282
6283 // Move the cursor a large distance via the mouse.
6284 // The history can jump back to the previous position.
6285 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6286 editor.end_selection(cx);
6287 assert_eq!(
6288 editor.selected_display_ranges(cx),
6289 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6290 );
6291 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6292 editor.navigate(nav_entry.data.unwrap(), cx);
6293 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6294 assert_eq!(
6295 editor.selected_display_ranges(cx),
6296 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6297 );
6298
6299 editor
6300 });
6301 }
6302
6303 #[gpui::test]
6304 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6305 populate_settings(cx);
6306 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6307 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6308
6309 view.update(cx, |view, cx| {
6310 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6311 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6312 view.end_selection(cx);
6313
6314 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6315 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6316 view.end_selection(cx);
6317 assert_eq!(
6318 view.selected_display_ranges(cx),
6319 [
6320 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6321 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6322 ]
6323 );
6324 });
6325
6326 view.update(cx, |view, cx| {
6327 view.cancel(&Cancel, cx);
6328 assert_eq!(
6329 view.selected_display_ranges(cx),
6330 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6331 );
6332 });
6333
6334 view.update(cx, |view, cx| {
6335 view.cancel(&Cancel, cx);
6336 assert_eq!(
6337 view.selected_display_ranges(cx),
6338 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6339 );
6340 });
6341 }
6342
6343 #[gpui::test]
6344 fn test_fold(cx: &mut gpui::MutableAppContext) {
6345 populate_settings(cx);
6346 let buffer = MultiBuffer::build_simple(
6347 &"
6348 impl Foo {
6349 // Hello!
6350
6351 fn a() {
6352 1
6353 }
6354
6355 fn b() {
6356 2
6357 }
6358
6359 fn c() {
6360 3
6361 }
6362 }
6363 "
6364 .unindent(),
6365 cx,
6366 );
6367 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6368
6369 view.update(cx, |view, cx| {
6370 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6371 view.fold(&Fold, cx);
6372 assert_eq!(
6373 view.display_text(cx),
6374 "
6375 impl Foo {
6376 // Hello!
6377
6378 fn a() {
6379 1
6380 }
6381
6382 fn b() {…
6383 }
6384
6385 fn c() {…
6386 }
6387 }
6388 "
6389 .unindent(),
6390 );
6391
6392 view.fold(&Fold, cx);
6393 assert_eq!(
6394 view.display_text(cx),
6395 "
6396 impl Foo {…
6397 }
6398 "
6399 .unindent(),
6400 );
6401
6402 view.unfold(&Unfold, cx);
6403 assert_eq!(
6404 view.display_text(cx),
6405 "
6406 impl Foo {
6407 // Hello!
6408
6409 fn a() {
6410 1
6411 }
6412
6413 fn b() {…
6414 }
6415
6416 fn c() {…
6417 }
6418 }
6419 "
6420 .unindent(),
6421 );
6422
6423 view.unfold(&Unfold, cx);
6424 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6425 });
6426 }
6427
6428 #[gpui::test]
6429 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6430 populate_settings(cx);
6431 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6432 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6433
6434 buffer.update(cx, |buffer, cx| {
6435 buffer.edit(
6436 vec![
6437 Point::new(1, 0)..Point::new(1, 0),
6438 Point::new(1, 1)..Point::new(1, 1),
6439 ],
6440 "\t",
6441 cx,
6442 );
6443 });
6444
6445 view.update(cx, |view, cx| {
6446 assert_eq!(
6447 view.selected_display_ranges(cx),
6448 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6449 );
6450
6451 view.move_down(&MoveDown, cx);
6452 assert_eq!(
6453 view.selected_display_ranges(cx),
6454 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6455 );
6456
6457 view.move_right(&MoveRight, cx);
6458 assert_eq!(
6459 view.selected_display_ranges(cx),
6460 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6461 );
6462
6463 view.move_left(&MoveLeft, cx);
6464 assert_eq!(
6465 view.selected_display_ranges(cx),
6466 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6467 );
6468
6469 view.move_up(&MoveUp, cx);
6470 assert_eq!(
6471 view.selected_display_ranges(cx),
6472 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6473 );
6474
6475 view.move_to_end(&MoveToEnd, cx);
6476 assert_eq!(
6477 view.selected_display_ranges(cx),
6478 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6479 );
6480
6481 view.move_to_beginning(&MoveToBeginning, cx);
6482 assert_eq!(
6483 view.selected_display_ranges(cx),
6484 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6485 );
6486
6487 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6488 view.select_to_beginning(&SelectToBeginning, cx);
6489 assert_eq!(
6490 view.selected_display_ranges(cx),
6491 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6492 );
6493
6494 view.select_to_end(&SelectToEnd, cx);
6495 assert_eq!(
6496 view.selected_display_ranges(cx),
6497 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6498 );
6499 });
6500 }
6501
6502 #[gpui::test]
6503 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6504 populate_settings(cx);
6505 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6506 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6507
6508 assert_eq!('ⓐ'.len_utf8(), 3);
6509 assert_eq!('α'.len_utf8(), 2);
6510
6511 view.update(cx, |view, cx| {
6512 view.fold_ranges(
6513 vec![
6514 Point::new(0, 6)..Point::new(0, 12),
6515 Point::new(1, 2)..Point::new(1, 4),
6516 Point::new(2, 4)..Point::new(2, 8),
6517 ],
6518 cx,
6519 );
6520 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6521
6522 view.move_right(&MoveRight, cx);
6523 assert_eq!(
6524 view.selected_display_ranges(cx),
6525 &[empty_range(0, "ⓐ".len())]
6526 );
6527 view.move_right(&MoveRight, cx);
6528 assert_eq!(
6529 view.selected_display_ranges(cx),
6530 &[empty_range(0, "ⓐⓑ".len())]
6531 );
6532 view.move_right(&MoveRight, cx);
6533 assert_eq!(
6534 view.selected_display_ranges(cx),
6535 &[empty_range(0, "ⓐⓑ…".len())]
6536 );
6537
6538 view.move_down(&MoveDown, cx);
6539 assert_eq!(
6540 view.selected_display_ranges(cx),
6541 &[empty_range(1, "ab…".len())]
6542 );
6543 view.move_left(&MoveLeft, cx);
6544 assert_eq!(
6545 view.selected_display_ranges(cx),
6546 &[empty_range(1, "ab".len())]
6547 );
6548 view.move_left(&MoveLeft, cx);
6549 assert_eq!(
6550 view.selected_display_ranges(cx),
6551 &[empty_range(1, "a".len())]
6552 );
6553
6554 view.move_down(&MoveDown, cx);
6555 assert_eq!(
6556 view.selected_display_ranges(cx),
6557 &[empty_range(2, "α".len())]
6558 );
6559 view.move_right(&MoveRight, cx);
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 &[empty_range(2, "αβ".len())]
6563 );
6564 view.move_right(&MoveRight, cx);
6565 assert_eq!(
6566 view.selected_display_ranges(cx),
6567 &[empty_range(2, "αβ…".len())]
6568 );
6569 view.move_right(&MoveRight, cx);
6570 assert_eq!(
6571 view.selected_display_ranges(cx),
6572 &[empty_range(2, "αβ…ε".len())]
6573 );
6574
6575 view.move_up(&MoveUp, cx);
6576 assert_eq!(
6577 view.selected_display_ranges(cx),
6578 &[empty_range(1, "ab…e".len())]
6579 );
6580 view.move_up(&MoveUp, cx);
6581 assert_eq!(
6582 view.selected_display_ranges(cx),
6583 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6584 );
6585 view.move_left(&MoveLeft, cx);
6586 assert_eq!(
6587 view.selected_display_ranges(cx),
6588 &[empty_range(0, "ⓐⓑ…".len())]
6589 );
6590 view.move_left(&MoveLeft, cx);
6591 assert_eq!(
6592 view.selected_display_ranges(cx),
6593 &[empty_range(0, "ⓐⓑ".len())]
6594 );
6595 view.move_left(&MoveLeft, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 &[empty_range(0, "ⓐ".len())]
6599 );
6600 });
6601 }
6602
6603 #[gpui::test]
6604 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6605 populate_settings(cx);
6606 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6607 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6608 view.update(cx, |view, cx| {
6609 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6610 view.move_down(&MoveDown, cx);
6611 assert_eq!(
6612 view.selected_display_ranges(cx),
6613 &[empty_range(1, "abcd".len())]
6614 );
6615
6616 view.move_down(&MoveDown, cx);
6617 assert_eq!(
6618 view.selected_display_ranges(cx),
6619 &[empty_range(2, "αβγ".len())]
6620 );
6621
6622 view.move_down(&MoveDown, cx);
6623 assert_eq!(
6624 view.selected_display_ranges(cx),
6625 &[empty_range(3, "abcd".len())]
6626 );
6627
6628 view.move_down(&MoveDown, cx);
6629 assert_eq!(
6630 view.selected_display_ranges(cx),
6631 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6632 );
6633
6634 view.move_up(&MoveUp, cx);
6635 assert_eq!(
6636 view.selected_display_ranges(cx),
6637 &[empty_range(3, "abcd".len())]
6638 );
6639
6640 view.move_up(&MoveUp, cx);
6641 assert_eq!(
6642 view.selected_display_ranges(cx),
6643 &[empty_range(2, "αβγ".len())]
6644 );
6645 });
6646 }
6647
6648 #[gpui::test]
6649 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6650 populate_settings(cx);
6651 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6652 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6653 view.update(cx, |view, cx| {
6654 view.select_display_ranges(
6655 &[
6656 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6657 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6658 ],
6659 cx,
6660 );
6661 });
6662
6663 view.update(cx, |view, cx| {
6664 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6665 assert_eq!(
6666 view.selected_display_ranges(cx),
6667 &[
6668 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6669 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6670 ]
6671 );
6672 });
6673
6674 view.update(cx, |view, cx| {
6675 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6676 assert_eq!(
6677 view.selected_display_ranges(cx),
6678 &[
6679 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6680 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6681 ]
6682 );
6683 });
6684
6685 view.update(cx, |view, cx| {
6686 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6687 assert_eq!(
6688 view.selected_display_ranges(cx),
6689 &[
6690 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6691 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6692 ]
6693 );
6694 });
6695
6696 view.update(cx, |view, cx| {
6697 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6698 assert_eq!(
6699 view.selected_display_ranges(cx),
6700 &[
6701 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6702 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6703 ]
6704 );
6705 });
6706
6707 // Moving to the end of line again is a no-op.
6708 view.update(cx, |view, cx| {
6709 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6710 assert_eq!(
6711 view.selected_display_ranges(cx),
6712 &[
6713 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6714 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6715 ]
6716 );
6717 });
6718
6719 view.update(cx, |view, cx| {
6720 view.move_left(&MoveLeft, cx);
6721 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6722 assert_eq!(
6723 view.selected_display_ranges(cx),
6724 &[
6725 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6726 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6727 ]
6728 );
6729 });
6730
6731 view.update(cx, |view, cx| {
6732 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6733 assert_eq!(
6734 view.selected_display_ranges(cx),
6735 &[
6736 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6737 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6738 ]
6739 );
6740 });
6741
6742 view.update(cx, |view, cx| {
6743 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6744 assert_eq!(
6745 view.selected_display_ranges(cx),
6746 &[
6747 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6748 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6749 ]
6750 );
6751 });
6752
6753 view.update(cx, |view, cx| {
6754 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6755 assert_eq!(
6756 view.selected_display_ranges(cx),
6757 &[
6758 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6759 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6760 ]
6761 );
6762 });
6763
6764 view.update(cx, |view, cx| {
6765 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6766 assert_eq!(view.display_text(cx), "ab\n de");
6767 assert_eq!(
6768 view.selected_display_ranges(cx),
6769 &[
6770 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6771 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6772 ]
6773 );
6774 });
6775
6776 view.update(cx, |view, cx| {
6777 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6778 assert_eq!(view.display_text(cx), "\n");
6779 assert_eq!(
6780 view.selected_display_ranges(cx),
6781 &[
6782 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6783 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6784 ]
6785 );
6786 });
6787 }
6788
6789 #[gpui::test]
6790 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6791 populate_settings(cx);
6792 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6793 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6794 view.update(cx, |view, cx| {
6795 view.select_display_ranges(
6796 &[
6797 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6798 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6799 ],
6800 cx,
6801 );
6802 });
6803
6804 view.update(cx, |view, cx| {
6805 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6806 assert_eq!(
6807 view.selected_display_ranges(cx),
6808 &[
6809 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6810 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6811 ]
6812 );
6813 });
6814
6815 view.update(cx, |view, cx| {
6816 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 &[
6820 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6821 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6822 ]
6823 );
6824 });
6825
6826 view.update(cx, |view, cx| {
6827 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6828 assert_eq!(
6829 view.selected_display_ranges(cx),
6830 &[
6831 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6832 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6833 ]
6834 );
6835 });
6836
6837 view.update(cx, |view, cx| {
6838 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6839 assert_eq!(
6840 view.selected_display_ranges(cx),
6841 &[
6842 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6843 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6844 ]
6845 );
6846 });
6847
6848 view.update(cx, |view, cx| {
6849 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6850 assert_eq!(
6851 view.selected_display_ranges(cx),
6852 &[
6853 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6854 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6855 ]
6856 );
6857 });
6858
6859 view.update(cx, |view, cx| {
6860 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6861 assert_eq!(
6862 view.selected_display_ranges(cx),
6863 &[
6864 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6865 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6866 ]
6867 );
6868 });
6869
6870 view.update(cx, |view, cx| {
6871 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6872 assert_eq!(
6873 view.selected_display_ranges(cx),
6874 &[
6875 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6876 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6877 ]
6878 );
6879 });
6880
6881 view.update(cx, |view, cx| {
6882 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6883 assert_eq!(
6884 view.selected_display_ranges(cx),
6885 &[
6886 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6887 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6888 ]
6889 );
6890 });
6891
6892 view.update(cx, |view, cx| {
6893 view.move_right(&MoveRight, cx);
6894 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6895 assert_eq!(
6896 view.selected_display_ranges(cx),
6897 &[
6898 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6899 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6900 ]
6901 );
6902 });
6903
6904 view.update(cx, |view, cx| {
6905 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6906 assert_eq!(
6907 view.selected_display_ranges(cx),
6908 &[
6909 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6910 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6911 ]
6912 );
6913 });
6914
6915 view.update(cx, |view, cx| {
6916 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6917 assert_eq!(
6918 view.selected_display_ranges(cx),
6919 &[
6920 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6921 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6922 ]
6923 );
6924 });
6925 }
6926
6927 #[gpui::test]
6928 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6929 populate_settings(cx);
6930 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6931 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6932
6933 view.update(cx, |view, cx| {
6934 view.set_wrap_width(Some(140.), cx);
6935 assert_eq!(
6936 view.display_text(cx),
6937 "use one::{\n two::three::\n four::five\n};"
6938 );
6939
6940 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6941
6942 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6943 assert_eq!(
6944 view.selected_display_ranges(cx),
6945 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6946 );
6947
6948 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6949 assert_eq!(
6950 view.selected_display_ranges(cx),
6951 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6952 );
6953
6954 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6955 assert_eq!(
6956 view.selected_display_ranges(cx),
6957 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6958 );
6959
6960 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6961 assert_eq!(
6962 view.selected_display_ranges(cx),
6963 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6964 );
6965
6966 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6967 assert_eq!(
6968 view.selected_display_ranges(cx),
6969 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6970 );
6971
6972 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6973 assert_eq!(
6974 view.selected_display_ranges(cx),
6975 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6976 );
6977 });
6978 }
6979
6980 #[gpui::test]
6981 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6982 populate_settings(cx);
6983 let buffer = MultiBuffer::build_simple("one two three four", cx);
6984 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6985
6986 view.update(cx, |view, cx| {
6987 view.select_display_ranges(
6988 &[
6989 // an empty selection - the preceding word fragment is deleted
6990 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6991 // characters selected - they are deleted
6992 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6993 ],
6994 cx,
6995 );
6996 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6997 });
6998
6999 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7000
7001 view.update(cx, |view, cx| {
7002 view.select_display_ranges(
7003 &[
7004 // an empty selection - the following word fragment is deleted
7005 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7006 // characters selected - they are deleted
7007 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7008 ],
7009 cx,
7010 );
7011 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
7012 });
7013
7014 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7015 }
7016
7017 #[gpui::test]
7018 fn test_newline(cx: &mut gpui::MutableAppContext) {
7019 populate_settings(cx);
7020 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7021 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7022
7023 view.update(cx, |view, cx| {
7024 view.select_display_ranges(
7025 &[
7026 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7027 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7028 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7029 ],
7030 cx,
7031 );
7032
7033 view.newline(&Newline, cx);
7034 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7035 });
7036 }
7037
7038 #[gpui::test]
7039 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7040 populate_settings(cx);
7041 let buffer = MultiBuffer::build_simple(
7042 "
7043 a
7044 b(
7045 X
7046 )
7047 c(
7048 X
7049 )
7050 "
7051 .unindent()
7052 .as_str(),
7053 cx,
7054 );
7055
7056 let (_, editor) = cx.add_window(Default::default(), |cx| {
7057 let mut editor = build_editor(buffer.clone(), cx);
7058 editor.select_ranges(
7059 [
7060 Point::new(2, 4)..Point::new(2, 5),
7061 Point::new(5, 4)..Point::new(5, 5),
7062 ],
7063 None,
7064 cx,
7065 );
7066 editor
7067 });
7068
7069 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7070 buffer.update(cx, |buffer, cx| {
7071 buffer.edit(
7072 [
7073 Point::new(1, 2)..Point::new(3, 0),
7074 Point::new(4, 2)..Point::new(6, 0),
7075 ],
7076 "",
7077 cx,
7078 );
7079 assert_eq!(
7080 buffer.read(cx).text(),
7081 "
7082 a
7083 b()
7084 c()
7085 "
7086 .unindent()
7087 );
7088 });
7089
7090 editor.update(cx, |editor, cx| {
7091 assert_eq!(
7092 editor.selected_ranges(cx),
7093 &[
7094 Point::new(1, 2)..Point::new(1, 2),
7095 Point::new(2, 2)..Point::new(2, 2),
7096 ],
7097 );
7098
7099 editor.newline(&Newline, cx);
7100 assert_eq!(
7101 editor.text(cx),
7102 "
7103 a
7104 b(
7105 )
7106 c(
7107 )
7108 "
7109 .unindent()
7110 );
7111
7112 // The selections are moved after the inserted newlines
7113 assert_eq!(
7114 editor.selected_ranges(cx),
7115 &[
7116 Point::new(2, 0)..Point::new(2, 0),
7117 Point::new(4, 0)..Point::new(4, 0),
7118 ],
7119 );
7120 });
7121 }
7122
7123 #[gpui::test]
7124 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7125 populate_settings(cx);
7126 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7127 let (_, editor) = cx.add_window(Default::default(), |cx| {
7128 let mut editor = build_editor(buffer.clone(), cx);
7129 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7130 editor
7131 });
7132
7133 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7134 buffer.update(cx, |buffer, cx| {
7135 buffer.edit([2..5, 10..13, 18..21], "", cx);
7136 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7137 });
7138
7139 editor.update(cx, |editor, cx| {
7140 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7141
7142 editor.insert("Z", cx);
7143 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7144
7145 // The selections are moved after the inserted characters
7146 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7147 });
7148 }
7149
7150 #[gpui::test]
7151 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7152 populate_settings(cx);
7153 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7154 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7155
7156 view.update(cx, |view, cx| {
7157 // two selections on the same line
7158 view.select_display_ranges(
7159 &[
7160 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7161 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7162 ],
7163 cx,
7164 );
7165
7166 // indent from mid-tabstop to full tabstop
7167 view.tab(&Tab, cx);
7168 assert_eq!(view.text(cx), " one two\nthree\n four");
7169 assert_eq!(
7170 view.selected_display_ranges(cx),
7171 &[
7172 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7173 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7174 ]
7175 );
7176
7177 // outdent from 1 tabstop to 0 tabstops
7178 view.outdent(&Outdent, cx);
7179 assert_eq!(view.text(cx), "one two\nthree\n four");
7180 assert_eq!(
7181 view.selected_display_ranges(cx),
7182 &[
7183 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7184 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7185 ]
7186 );
7187
7188 // select across line ending
7189 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7190
7191 // indent and outdent affect only the preceding line
7192 view.tab(&Tab, cx);
7193 assert_eq!(view.text(cx), "one two\n three\n four");
7194 assert_eq!(
7195 view.selected_display_ranges(cx),
7196 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7197 );
7198 view.outdent(&Outdent, cx);
7199 assert_eq!(view.text(cx), "one two\nthree\n four");
7200 assert_eq!(
7201 view.selected_display_ranges(cx),
7202 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7203 );
7204
7205 // Ensure that indenting/outdenting works when the cursor is at column 0.
7206 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7207 view.tab(&Tab, cx);
7208 assert_eq!(view.text(cx), "one two\n three\n four");
7209 assert_eq!(
7210 view.selected_display_ranges(cx),
7211 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7212 );
7213
7214 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7215 view.outdent(&Outdent, cx);
7216 assert_eq!(view.text(cx), "one two\nthree\n four");
7217 assert_eq!(
7218 view.selected_display_ranges(cx),
7219 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7220 );
7221 });
7222 }
7223
7224 #[gpui::test]
7225 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7226 populate_settings(cx);
7227 let (_, view) = cx.add_window(Default::default(), |cx| {
7228 build_editor(MultiBuffer::build_simple("", cx), cx)
7229 });
7230
7231 view.update(cx, |view, cx| {
7232 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7233 view.select_display_ranges(
7234 &[
7235 // an empty selection - the preceding character is deleted
7236 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7237 // one character selected - it is deleted
7238 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7239 // a line suffix selected - it is deleted
7240 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7241 ],
7242 cx,
7243 );
7244 view.backspace(&Backspace, cx);
7245 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7246
7247 view.set_text(" one\n two\n three\n four", cx);
7248 view.select_display_ranges(
7249 &[
7250 // cursors at the the end of leading indent - last indent is deleted
7251 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7252 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7253 // cursors inside leading indent - overlapping indent deletions are coalesced
7254 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7255 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7256 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7257 // cursor at the beginning of a line - preceding newline is deleted
7258 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7259 // selection inside leading indent - only the selected character is deleted
7260 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7261 ],
7262 cx,
7263 );
7264 view.backspace(&Backspace, cx);
7265 assert_eq!(view.text(cx), "one\n two\n three four");
7266 });
7267 }
7268
7269 #[gpui::test]
7270 fn test_delete(cx: &mut gpui::MutableAppContext) {
7271 populate_settings(cx);
7272 let buffer =
7273 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7274 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7275
7276 view.update(cx, |view, cx| {
7277 view.select_display_ranges(
7278 &[
7279 // an empty selection - the following character is deleted
7280 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7281 // one character selected - it is deleted
7282 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7283 // a line suffix selected - it is deleted
7284 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7285 ],
7286 cx,
7287 );
7288 view.delete(&Delete, cx);
7289 });
7290
7291 assert_eq!(
7292 buffer.read(cx).read(cx).text(),
7293 "on two three\nfou five six\nseven ten\n"
7294 );
7295 }
7296
7297 #[gpui::test]
7298 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7299 populate_settings(cx);
7300 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7301 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7302 view.update(cx, |view, cx| {
7303 view.select_display_ranges(
7304 &[
7305 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7306 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7307 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7308 ],
7309 cx,
7310 );
7311 view.delete_line(&DeleteLine, cx);
7312 assert_eq!(view.display_text(cx), "ghi");
7313 assert_eq!(
7314 view.selected_display_ranges(cx),
7315 vec![
7316 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7317 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7318 ]
7319 );
7320 });
7321
7322 populate_settings(cx);
7323 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7324 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7325 view.update(cx, |view, cx| {
7326 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7327 view.delete_line(&DeleteLine, cx);
7328 assert_eq!(view.display_text(cx), "ghi\n");
7329 assert_eq!(
7330 view.selected_display_ranges(cx),
7331 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7332 );
7333 });
7334 }
7335
7336 #[gpui::test]
7337 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7338 populate_settings(cx);
7339 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7340 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7341 view.update(cx, |view, cx| {
7342 view.select_display_ranges(
7343 &[
7344 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7345 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7346 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7347 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7348 ],
7349 cx,
7350 );
7351 view.duplicate_line(&DuplicateLine, cx);
7352 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7353 assert_eq!(
7354 view.selected_display_ranges(cx),
7355 vec![
7356 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7357 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7358 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7359 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7360 ]
7361 );
7362 });
7363
7364 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7365 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7366 view.update(cx, |view, cx| {
7367 view.select_display_ranges(
7368 &[
7369 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7370 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7371 ],
7372 cx,
7373 );
7374 view.duplicate_line(&DuplicateLine, cx);
7375 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7376 assert_eq!(
7377 view.selected_display_ranges(cx),
7378 vec![
7379 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7380 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7381 ]
7382 );
7383 });
7384 }
7385
7386 #[gpui::test]
7387 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7388 populate_settings(cx);
7389 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7390 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7391 view.update(cx, |view, cx| {
7392 view.fold_ranges(
7393 vec![
7394 Point::new(0, 2)..Point::new(1, 2),
7395 Point::new(2, 3)..Point::new(4, 1),
7396 Point::new(7, 0)..Point::new(8, 4),
7397 ],
7398 cx,
7399 );
7400 view.select_display_ranges(
7401 &[
7402 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7403 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7404 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7405 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7406 ],
7407 cx,
7408 );
7409 assert_eq!(
7410 view.display_text(cx),
7411 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7412 );
7413
7414 view.move_line_up(&MoveLineUp, cx);
7415 assert_eq!(
7416 view.display_text(cx),
7417 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7418 );
7419 assert_eq!(
7420 view.selected_display_ranges(cx),
7421 vec![
7422 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7423 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7424 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7425 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7426 ]
7427 );
7428 });
7429
7430 view.update(cx, |view, cx| {
7431 view.move_line_down(&MoveLineDown, cx);
7432 assert_eq!(
7433 view.display_text(cx),
7434 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7435 );
7436 assert_eq!(
7437 view.selected_display_ranges(cx),
7438 vec![
7439 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7440 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7441 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7442 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7443 ]
7444 );
7445 });
7446
7447 view.update(cx, |view, cx| {
7448 view.move_line_down(&MoveLineDown, cx);
7449 assert_eq!(
7450 view.display_text(cx),
7451 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7452 );
7453 assert_eq!(
7454 view.selected_display_ranges(cx),
7455 vec![
7456 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7457 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7458 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7459 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7460 ]
7461 );
7462 });
7463
7464 view.update(cx, |view, cx| {
7465 view.move_line_up(&MoveLineUp, cx);
7466 assert_eq!(
7467 view.display_text(cx),
7468 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7469 );
7470 assert_eq!(
7471 view.selected_display_ranges(cx),
7472 vec![
7473 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7474 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7475 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7476 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7477 ]
7478 );
7479 });
7480 }
7481
7482 #[gpui::test]
7483 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7484 populate_settings(cx);
7485 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7486 let snapshot = buffer.read(cx).snapshot(cx);
7487 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7488 editor.update(cx, |editor, cx| {
7489 editor.insert_blocks(
7490 [BlockProperties {
7491 position: snapshot.anchor_after(Point::new(2, 0)),
7492 disposition: BlockDisposition::Below,
7493 height: 1,
7494 render: Arc::new(|_| Empty::new().boxed()),
7495 }],
7496 cx,
7497 );
7498 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7499 editor.move_line_down(&MoveLineDown, cx);
7500 });
7501 }
7502
7503 #[gpui::test]
7504 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7505 populate_settings(cx);
7506 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7507 let view = cx
7508 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7509 .1;
7510
7511 // Cut with three selections. Clipboard text is divided into three slices.
7512 view.update(cx, |view, cx| {
7513 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7514 view.cut(&Cut, cx);
7515 assert_eq!(view.display_text(cx), "two four six ");
7516 });
7517
7518 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7519 view.update(cx, |view, cx| {
7520 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7521 view.paste(&Paste, cx);
7522 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7523 assert_eq!(
7524 view.selected_display_ranges(cx),
7525 &[
7526 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7527 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7528 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7529 ]
7530 );
7531 });
7532
7533 // Paste again but with only two cursors. Since the number of cursors doesn't
7534 // match the number of slices in the clipboard, the entire clipboard text
7535 // is pasted at each cursor.
7536 view.update(cx, |view, cx| {
7537 view.select_ranges(vec![0..0, 31..31], None, cx);
7538 view.handle_input(&Input("( ".into()), cx);
7539 view.paste(&Paste, cx);
7540 view.handle_input(&Input(") ".into()), cx);
7541 assert_eq!(
7542 view.display_text(cx),
7543 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7544 );
7545 });
7546
7547 view.update(cx, |view, cx| {
7548 view.select_ranges(vec![0..0], None, cx);
7549 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7550 assert_eq!(
7551 view.display_text(cx),
7552 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7553 );
7554 });
7555
7556 // Cut with three selections, one of which is full-line.
7557 view.update(cx, |view, cx| {
7558 view.select_display_ranges(
7559 &[
7560 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7561 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7562 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7563 ],
7564 cx,
7565 );
7566 view.cut(&Cut, cx);
7567 assert_eq!(
7568 view.display_text(cx),
7569 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7570 );
7571 });
7572
7573 // Paste with three selections, noticing how the copied selection that was full-line
7574 // gets inserted before the second cursor.
7575 view.update(cx, |view, cx| {
7576 view.select_display_ranges(
7577 &[
7578 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7579 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7580 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7581 ],
7582 cx,
7583 );
7584 view.paste(&Paste, cx);
7585 assert_eq!(
7586 view.display_text(cx),
7587 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7588 );
7589 assert_eq!(
7590 view.selected_display_ranges(cx),
7591 &[
7592 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7593 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7594 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7595 ]
7596 );
7597 });
7598
7599 // Copy with a single cursor only, which writes the whole line into the clipboard.
7600 view.update(cx, |view, cx| {
7601 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7602 view.copy(&Copy, cx);
7603 });
7604
7605 // Paste with three selections, noticing how the copied full-line selection is inserted
7606 // before the empty selections but replaces the selection that is non-empty.
7607 view.update(cx, |view, cx| {
7608 view.select_display_ranges(
7609 &[
7610 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7611 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7612 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7613 ],
7614 cx,
7615 );
7616 view.paste(&Paste, cx);
7617 assert_eq!(
7618 view.display_text(cx),
7619 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7620 );
7621 assert_eq!(
7622 view.selected_display_ranges(cx),
7623 &[
7624 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7625 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7626 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7627 ]
7628 );
7629 });
7630 }
7631
7632 #[gpui::test]
7633 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7634 populate_settings(cx);
7635 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7636 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7637 view.update(cx, |view, cx| {
7638 view.select_all(&SelectAll, cx);
7639 assert_eq!(
7640 view.selected_display_ranges(cx),
7641 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7642 );
7643 });
7644 }
7645
7646 #[gpui::test]
7647 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7648 populate_settings(cx);
7649 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7650 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7651 view.update(cx, |view, cx| {
7652 view.select_display_ranges(
7653 &[
7654 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7655 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7656 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7657 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7658 ],
7659 cx,
7660 );
7661 view.select_line(&SelectLine, cx);
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 vec![
7665 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7666 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7667 ]
7668 );
7669 });
7670
7671 view.update(cx, |view, cx| {
7672 view.select_line(&SelectLine, cx);
7673 assert_eq!(
7674 view.selected_display_ranges(cx),
7675 vec![
7676 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7677 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7678 ]
7679 );
7680 });
7681
7682 view.update(cx, |view, cx| {
7683 view.select_line(&SelectLine, cx);
7684 assert_eq!(
7685 view.selected_display_ranges(cx),
7686 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7687 );
7688 });
7689 }
7690
7691 #[gpui::test]
7692 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7693 populate_settings(cx);
7694 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7695 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7696 view.update(cx, |view, cx| {
7697 view.fold_ranges(
7698 vec![
7699 Point::new(0, 2)..Point::new(1, 2),
7700 Point::new(2, 3)..Point::new(4, 1),
7701 Point::new(7, 0)..Point::new(8, 4),
7702 ],
7703 cx,
7704 );
7705 view.select_display_ranges(
7706 &[
7707 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7708 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7709 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7710 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7711 ],
7712 cx,
7713 );
7714 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7715 });
7716
7717 view.update(cx, |view, cx| {
7718 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7719 assert_eq!(
7720 view.display_text(cx),
7721 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7722 );
7723 assert_eq!(
7724 view.selected_display_ranges(cx),
7725 [
7726 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7727 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7728 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7729 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7730 ]
7731 );
7732 });
7733
7734 view.update(cx, |view, cx| {
7735 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7736 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7737 assert_eq!(
7738 view.display_text(cx),
7739 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7740 );
7741 assert_eq!(
7742 view.selected_display_ranges(cx),
7743 [
7744 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7745 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7746 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7747 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7748 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7749 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7750 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7751 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7752 ]
7753 );
7754 });
7755 }
7756
7757 #[gpui::test]
7758 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7759 populate_settings(cx);
7760 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7761 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7762
7763 view.update(cx, |view, cx| {
7764 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7765 });
7766 view.update(cx, |view, cx| {
7767 view.add_selection_above(&AddSelectionAbove, cx);
7768 assert_eq!(
7769 view.selected_display_ranges(cx),
7770 vec![
7771 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7772 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7773 ]
7774 );
7775 });
7776
7777 view.update(cx, |view, cx| {
7778 view.add_selection_above(&AddSelectionAbove, cx);
7779 assert_eq!(
7780 view.selected_display_ranges(cx),
7781 vec![
7782 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7783 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7784 ]
7785 );
7786 });
7787
7788 view.update(cx, |view, cx| {
7789 view.add_selection_below(&AddSelectionBelow, cx);
7790 assert_eq!(
7791 view.selected_display_ranges(cx),
7792 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7793 );
7794 });
7795
7796 view.update(cx, |view, cx| {
7797 view.add_selection_below(&AddSelectionBelow, cx);
7798 assert_eq!(
7799 view.selected_display_ranges(cx),
7800 vec![
7801 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7802 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7803 ]
7804 );
7805 });
7806
7807 view.update(cx, |view, cx| {
7808 view.add_selection_below(&AddSelectionBelow, cx);
7809 assert_eq!(
7810 view.selected_display_ranges(cx),
7811 vec![
7812 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7813 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7814 ]
7815 );
7816 });
7817
7818 view.update(cx, |view, cx| {
7819 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7820 });
7821 view.update(cx, |view, cx| {
7822 view.add_selection_below(&AddSelectionBelow, cx);
7823 assert_eq!(
7824 view.selected_display_ranges(cx),
7825 vec![
7826 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7827 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7828 ]
7829 );
7830 });
7831
7832 view.update(cx, |view, cx| {
7833 view.add_selection_below(&AddSelectionBelow, cx);
7834 assert_eq!(
7835 view.selected_display_ranges(cx),
7836 vec![
7837 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7838 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7839 ]
7840 );
7841 });
7842
7843 view.update(cx, |view, cx| {
7844 view.add_selection_above(&AddSelectionAbove, cx);
7845 assert_eq!(
7846 view.selected_display_ranges(cx),
7847 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7848 );
7849 });
7850
7851 view.update(cx, |view, cx| {
7852 view.add_selection_above(&AddSelectionAbove, cx);
7853 assert_eq!(
7854 view.selected_display_ranges(cx),
7855 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7856 );
7857 });
7858
7859 view.update(cx, |view, cx| {
7860 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7861 view.add_selection_below(&AddSelectionBelow, cx);
7862 assert_eq!(
7863 view.selected_display_ranges(cx),
7864 vec![
7865 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7866 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7867 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7868 ]
7869 );
7870 });
7871
7872 view.update(cx, |view, cx| {
7873 view.add_selection_below(&AddSelectionBelow, cx);
7874 assert_eq!(
7875 view.selected_display_ranges(cx),
7876 vec![
7877 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7878 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7879 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7880 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7881 ]
7882 );
7883 });
7884
7885 view.update(cx, |view, cx| {
7886 view.add_selection_above(&AddSelectionAbove, cx);
7887 assert_eq!(
7888 view.selected_display_ranges(cx),
7889 vec![
7890 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7891 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7892 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7893 ]
7894 );
7895 });
7896
7897 view.update(cx, |view, cx| {
7898 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7899 });
7900 view.update(cx, |view, cx| {
7901 view.add_selection_above(&AddSelectionAbove, cx);
7902 assert_eq!(
7903 view.selected_display_ranges(cx),
7904 vec![
7905 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7906 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7907 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7908 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7909 ]
7910 );
7911 });
7912
7913 view.update(cx, |view, cx| {
7914 view.add_selection_below(&AddSelectionBelow, cx);
7915 assert_eq!(
7916 view.selected_display_ranges(cx),
7917 vec![
7918 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7919 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7920 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7921 ]
7922 );
7923 });
7924 }
7925
7926 #[gpui::test]
7927 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7928 cx.update(populate_settings);
7929 let language = Arc::new(Language::new(
7930 LanguageConfig::default(),
7931 Some(tree_sitter_rust::language()),
7932 ));
7933
7934 let text = r#"
7935 use mod1::mod2::{mod3, mod4};
7936
7937 fn fn_1(param1: bool, param2: &str) {
7938 let var1 = "text";
7939 }
7940 "#
7941 .unindent();
7942
7943 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7944 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7945 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7946 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7947 .await;
7948
7949 view.update(cx, |view, cx| {
7950 view.select_display_ranges(
7951 &[
7952 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7953 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7954 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7955 ],
7956 cx,
7957 );
7958 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7959 });
7960 assert_eq!(
7961 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7962 &[
7963 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7964 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7965 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7966 ]
7967 );
7968
7969 view.update(cx, |view, cx| {
7970 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7971 });
7972 assert_eq!(
7973 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7974 &[
7975 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7976 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7977 ]
7978 );
7979
7980 view.update(cx, |view, cx| {
7981 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7982 });
7983 assert_eq!(
7984 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7985 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7986 );
7987
7988 // Trying to expand the selected syntax node one more time has no effect.
7989 view.update(cx, |view, cx| {
7990 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7991 });
7992 assert_eq!(
7993 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7994 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7995 );
7996
7997 view.update(cx, |view, cx| {
7998 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7999 });
8000 assert_eq!(
8001 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8002 &[
8003 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8004 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8005 ]
8006 );
8007
8008 view.update(cx, |view, cx| {
8009 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8010 });
8011 assert_eq!(
8012 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8013 &[
8014 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8015 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8016 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8017 ]
8018 );
8019
8020 view.update(cx, |view, cx| {
8021 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8022 });
8023 assert_eq!(
8024 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8025 &[
8026 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8027 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8028 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8029 ]
8030 );
8031
8032 // Trying to shrink the selected syntax node one more time has no effect.
8033 view.update(cx, |view, cx| {
8034 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8035 });
8036 assert_eq!(
8037 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8038 &[
8039 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8040 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8041 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8042 ]
8043 );
8044
8045 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8046 // a fold.
8047 view.update(cx, |view, cx| {
8048 view.fold_ranges(
8049 vec![
8050 Point::new(0, 21)..Point::new(0, 24),
8051 Point::new(3, 20)..Point::new(3, 22),
8052 ],
8053 cx,
8054 );
8055 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8056 });
8057 assert_eq!(
8058 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8059 &[
8060 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8061 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8062 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8063 ]
8064 );
8065 }
8066
8067 #[gpui::test]
8068 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8069 cx.update(populate_settings);
8070 let language = Arc::new(
8071 Language::new(
8072 LanguageConfig {
8073 brackets: vec![
8074 BracketPair {
8075 start: "{".to_string(),
8076 end: "}".to_string(),
8077 close: false,
8078 newline: true,
8079 },
8080 BracketPair {
8081 start: "(".to_string(),
8082 end: ")".to_string(),
8083 close: false,
8084 newline: true,
8085 },
8086 ],
8087 ..Default::default()
8088 },
8089 Some(tree_sitter_rust::language()),
8090 )
8091 .with_indents_query(
8092 r#"
8093 (_ "(" ")" @end) @indent
8094 (_ "{" "}" @end) @indent
8095 "#,
8096 )
8097 .unwrap(),
8098 );
8099
8100 let text = "fn a() {}";
8101
8102 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8103 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8104 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8105 editor
8106 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8107 .await;
8108
8109 editor.update(cx, |editor, cx| {
8110 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8111 editor.newline(&Newline, cx);
8112 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8113 assert_eq!(
8114 editor.selected_ranges(cx),
8115 &[
8116 Point::new(1, 4)..Point::new(1, 4),
8117 Point::new(3, 4)..Point::new(3, 4),
8118 Point::new(5, 0)..Point::new(5, 0)
8119 ]
8120 );
8121 });
8122 }
8123
8124 #[gpui::test]
8125 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8126 cx.update(populate_settings);
8127 let language = Arc::new(Language::new(
8128 LanguageConfig {
8129 brackets: vec![
8130 BracketPair {
8131 start: "{".to_string(),
8132 end: "}".to_string(),
8133 close: true,
8134 newline: true,
8135 },
8136 BracketPair {
8137 start: "/*".to_string(),
8138 end: " */".to_string(),
8139 close: true,
8140 newline: true,
8141 },
8142 ],
8143 autoclose_before: "})]".to_string(),
8144 ..Default::default()
8145 },
8146 Some(tree_sitter_rust::language()),
8147 ));
8148
8149 let text = r#"
8150 a
8151
8152 /
8153
8154 "#
8155 .unindent();
8156
8157 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8158 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8159 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8160 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8161 .await;
8162
8163 view.update(cx, |view, cx| {
8164 view.select_display_ranges(
8165 &[
8166 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8167 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8168 ],
8169 cx,
8170 );
8171
8172 view.handle_input(&Input("{".to_string()), cx);
8173 view.handle_input(&Input("{".to_string()), cx);
8174 view.handle_input(&Input("{".to_string()), cx);
8175 assert_eq!(
8176 view.text(cx),
8177 "
8178 {{{}}}
8179 {{{}}}
8180 /
8181
8182 "
8183 .unindent()
8184 );
8185
8186 view.move_right(&MoveRight, cx);
8187 view.handle_input(&Input("}".to_string()), cx);
8188 view.handle_input(&Input("}".to_string()), cx);
8189 view.handle_input(&Input("}".to_string()), cx);
8190 assert_eq!(
8191 view.text(cx),
8192 "
8193 {{{}}}}
8194 {{{}}}}
8195 /
8196
8197 "
8198 .unindent()
8199 );
8200
8201 view.undo(&Undo, cx);
8202 view.handle_input(&Input("/".to_string()), cx);
8203 view.handle_input(&Input("*".to_string()), cx);
8204 assert_eq!(
8205 view.text(cx),
8206 "
8207 /* */
8208 /* */
8209 /
8210
8211 "
8212 .unindent()
8213 );
8214
8215 view.undo(&Undo, cx);
8216 view.select_display_ranges(
8217 &[
8218 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8219 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8220 ],
8221 cx,
8222 );
8223 view.handle_input(&Input("*".to_string()), cx);
8224 assert_eq!(
8225 view.text(cx),
8226 "
8227 a
8228
8229 /*
8230 *
8231 "
8232 .unindent()
8233 );
8234
8235 // Don't autoclose if the next character isn't whitespace and isn't
8236 // listed in the language's "autoclose_before" section.
8237 view.finalize_last_transaction(cx);
8238 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8239 view.handle_input(&Input("{".to_string()), cx);
8240 assert_eq!(
8241 view.text(cx),
8242 "
8243 {a
8244
8245 /*
8246 *
8247 "
8248 .unindent()
8249 );
8250
8251 view.undo(&Undo, cx);
8252 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8253 view.handle_input(&Input("{".to_string()), cx);
8254 assert_eq!(
8255 view.text(cx),
8256 "
8257 {a}
8258
8259 /*
8260 *
8261 "
8262 .unindent()
8263 );
8264 assert_eq!(
8265 view.selected_display_ranges(cx),
8266 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8267 );
8268 });
8269 }
8270
8271 #[gpui::test]
8272 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8273 cx.update(populate_settings);
8274
8275 let text = "
8276 a. b
8277 a. b
8278 a. b
8279 "
8280 .unindent();
8281 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8282 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8283
8284 editor.update(cx, |editor, cx| {
8285 let buffer = &editor.snapshot(cx).buffer_snapshot;
8286 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8287 let insertion_ranges = [
8288 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8289 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8290 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8291 ];
8292
8293 editor
8294 .insert_snippet(&insertion_ranges, snippet, cx)
8295 .unwrap();
8296 assert_eq!(
8297 editor.text(cx),
8298 "
8299 a.f(one, two, three) b
8300 a.f(one, two, three) b
8301 a.f(one, two, three) b
8302 "
8303 .unindent()
8304 );
8305 assert_eq!(
8306 editor.selected_ranges::<Point>(cx),
8307 &[
8308 Point::new(0, 4)..Point::new(0, 7),
8309 Point::new(0, 14)..Point::new(0, 19),
8310 Point::new(1, 4)..Point::new(1, 7),
8311 Point::new(1, 14)..Point::new(1, 19),
8312 Point::new(2, 4)..Point::new(2, 7),
8313 Point::new(2, 14)..Point::new(2, 19),
8314 ]
8315 );
8316
8317 // Can't move earlier than the first tab stop
8318 editor.move_to_prev_snippet_tabstop(cx);
8319 assert_eq!(
8320 editor.selected_ranges::<Point>(cx),
8321 &[
8322 Point::new(0, 4)..Point::new(0, 7),
8323 Point::new(0, 14)..Point::new(0, 19),
8324 Point::new(1, 4)..Point::new(1, 7),
8325 Point::new(1, 14)..Point::new(1, 19),
8326 Point::new(2, 4)..Point::new(2, 7),
8327 Point::new(2, 14)..Point::new(2, 19),
8328 ]
8329 );
8330
8331 assert!(editor.move_to_next_snippet_tabstop(cx));
8332 assert_eq!(
8333 editor.selected_ranges::<Point>(cx),
8334 &[
8335 Point::new(0, 9)..Point::new(0, 12),
8336 Point::new(1, 9)..Point::new(1, 12),
8337 Point::new(2, 9)..Point::new(2, 12)
8338 ]
8339 );
8340
8341 editor.move_to_prev_snippet_tabstop(cx);
8342 assert_eq!(
8343 editor.selected_ranges::<Point>(cx),
8344 &[
8345 Point::new(0, 4)..Point::new(0, 7),
8346 Point::new(0, 14)..Point::new(0, 19),
8347 Point::new(1, 4)..Point::new(1, 7),
8348 Point::new(1, 14)..Point::new(1, 19),
8349 Point::new(2, 4)..Point::new(2, 7),
8350 Point::new(2, 14)..Point::new(2, 19),
8351 ]
8352 );
8353
8354 assert!(editor.move_to_next_snippet_tabstop(cx));
8355 assert!(editor.move_to_next_snippet_tabstop(cx));
8356 assert_eq!(
8357 editor.selected_ranges::<Point>(cx),
8358 &[
8359 Point::new(0, 20)..Point::new(0, 20),
8360 Point::new(1, 20)..Point::new(1, 20),
8361 Point::new(2, 20)..Point::new(2, 20)
8362 ]
8363 );
8364
8365 // As soon as the last tab stop is reached, snippet state is gone
8366 editor.move_to_prev_snippet_tabstop(cx);
8367 assert_eq!(
8368 editor.selected_ranges::<Point>(cx),
8369 &[
8370 Point::new(0, 20)..Point::new(0, 20),
8371 Point::new(1, 20)..Point::new(1, 20),
8372 Point::new(2, 20)..Point::new(2, 20)
8373 ]
8374 );
8375 });
8376 }
8377
8378 #[gpui::test]
8379 async fn test_completion(cx: &mut gpui::TestAppContext) {
8380 cx.update(populate_settings);
8381
8382 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8383 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8384 completion_provider: Some(lsp::CompletionOptions {
8385 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8386 ..Default::default()
8387 }),
8388 ..Default::default()
8389 });
8390 let language = Arc::new(Language::new(
8391 LanguageConfig {
8392 name: "Rust".into(),
8393 path_suffixes: vec!["rs".to_string()],
8394 language_server: Some(language_server_config),
8395 ..Default::default()
8396 },
8397 Some(tree_sitter_rust::language()),
8398 ));
8399
8400 let text = "
8401 one
8402 two
8403 three
8404 "
8405 .unindent();
8406
8407 let fs = FakeFs::new(cx.background().clone());
8408 fs.insert_file("/file.rs", text).await;
8409
8410 let project = Project::test(fs, cx);
8411 project.update(cx, |project, _| project.languages().add(language));
8412
8413 let worktree_id = project
8414 .update(cx, |project, cx| {
8415 project.find_or_create_local_worktree("/file.rs", true, cx)
8416 })
8417 .await
8418 .unwrap()
8419 .0
8420 .read_with(cx, |tree, _| tree.id());
8421 let buffer = project
8422 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8423 .await
8424 .unwrap();
8425 let mut fake_server = fake_servers.next().await.unwrap();
8426
8427 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8428 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8429
8430 editor.update(cx, |editor, cx| {
8431 editor.project = Some(project);
8432 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8433 editor.handle_input(&Input(".".to_string()), cx);
8434 });
8435
8436 handle_completion_request(
8437 &mut fake_server,
8438 "/file.rs",
8439 Point::new(0, 4),
8440 vec![
8441 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8442 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8443 ],
8444 )
8445 .await;
8446 editor
8447 .condition(&cx, |editor, _| editor.context_menu_visible())
8448 .await;
8449
8450 let apply_additional_edits = editor.update(cx, |editor, cx| {
8451 editor.move_down(&MoveDown, cx);
8452 let apply_additional_edits = editor
8453 .confirm_completion(&ConfirmCompletion(None), cx)
8454 .unwrap();
8455 assert_eq!(
8456 editor.text(cx),
8457 "
8458 one.second_completion
8459 two
8460 three
8461 "
8462 .unindent()
8463 );
8464 apply_additional_edits
8465 });
8466
8467 handle_resolve_completion_request(
8468 &mut fake_server,
8469 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8470 )
8471 .await;
8472 apply_additional_edits.await.unwrap();
8473 assert_eq!(
8474 editor.read_with(cx, |editor, cx| editor.text(cx)),
8475 "
8476 one.second_completion
8477 two
8478 three
8479 additional edit
8480 "
8481 .unindent()
8482 );
8483
8484 editor.update(cx, |editor, cx| {
8485 editor.select_ranges(
8486 [
8487 Point::new(1, 3)..Point::new(1, 3),
8488 Point::new(2, 5)..Point::new(2, 5),
8489 ],
8490 None,
8491 cx,
8492 );
8493
8494 editor.handle_input(&Input(" ".to_string()), cx);
8495 assert!(editor.context_menu.is_none());
8496 editor.handle_input(&Input("s".to_string()), cx);
8497 assert!(editor.context_menu.is_none());
8498 });
8499
8500 handle_completion_request(
8501 &mut fake_server,
8502 "/file.rs",
8503 Point::new(2, 7),
8504 vec![
8505 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8506 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8507 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8508 ],
8509 )
8510 .await;
8511 editor
8512 .condition(&cx, |editor, _| editor.context_menu_visible())
8513 .await;
8514
8515 editor.update(cx, |editor, cx| {
8516 editor.handle_input(&Input("i".to_string()), cx);
8517 });
8518
8519 handle_completion_request(
8520 &mut fake_server,
8521 "/file.rs",
8522 Point::new(2, 8),
8523 vec![
8524 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8525 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8526 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8527 ],
8528 )
8529 .await;
8530 editor
8531 .condition(&cx, |editor, _| editor.context_menu_visible())
8532 .await;
8533
8534 let apply_additional_edits = editor.update(cx, |editor, cx| {
8535 let apply_additional_edits = editor
8536 .confirm_completion(&ConfirmCompletion(None), cx)
8537 .unwrap();
8538 assert_eq!(
8539 editor.text(cx),
8540 "
8541 one.second_completion
8542 two sixth_completion
8543 three sixth_completion
8544 additional edit
8545 "
8546 .unindent()
8547 );
8548 apply_additional_edits
8549 });
8550 handle_resolve_completion_request(&mut fake_server, None).await;
8551 apply_additional_edits.await.unwrap();
8552
8553 async fn handle_completion_request(
8554 fake: &mut FakeLanguageServer,
8555 path: &'static str,
8556 position: Point,
8557 completions: Vec<(Range<Point>, &'static str)>,
8558 ) {
8559 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8560 assert_eq!(
8561 params.text_document_position.text_document.uri,
8562 lsp::Url::from_file_path(path).unwrap()
8563 );
8564 assert_eq!(
8565 params.text_document_position.position,
8566 lsp::Position::new(position.row, position.column)
8567 );
8568 Some(lsp::CompletionResponse::Array(
8569 completions
8570 .iter()
8571 .map(|(range, new_text)| lsp::CompletionItem {
8572 label: new_text.to_string(),
8573 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8574 range: lsp::Range::new(
8575 lsp::Position::new(range.start.row, range.start.column),
8576 lsp::Position::new(range.start.row, range.start.column),
8577 ),
8578 new_text: new_text.to_string(),
8579 })),
8580 ..Default::default()
8581 })
8582 .collect(),
8583 ))
8584 })
8585 .next()
8586 .await;
8587 }
8588
8589 async fn handle_resolve_completion_request(
8590 fake: &mut FakeLanguageServer,
8591 edit: Option<(Range<Point>, &'static str)>,
8592 ) {
8593 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8594 lsp::CompletionItem {
8595 additional_text_edits: edit.clone().map(|(range, new_text)| {
8596 vec![lsp::TextEdit::new(
8597 lsp::Range::new(
8598 lsp::Position::new(range.start.row, range.start.column),
8599 lsp::Position::new(range.end.row, range.end.column),
8600 ),
8601 new_text.to_string(),
8602 )]
8603 }),
8604 ..Default::default()
8605 }
8606 })
8607 .next()
8608 .await;
8609 }
8610 }
8611
8612 #[gpui::test]
8613 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8614 cx.update(populate_settings);
8615 let language = Arc::new(Language::new(
8616 LanguageConfig {
8617 line_comment: Some("// ".to_string()),
8618 ..Default::default()
8619 },
8620 Some(tree_sitter_rust::language()),
8621 ));
8622
8623 let text = "
8624 fn a() {
8625 //b();
8626 // c();
8627 // d();
8628 }
8629 "
8630 .unindent();
8631
8632 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8633 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8634 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8635
8636 view.update(cx, |editor, cx| {
8637 // If multiple selections intersect a line, the line is only
8638 // toggled once.
8639 editor.select_display_ranges(
8640 &[
8641 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8642 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8643 ],
8644 cx,
8645 );
8646 editor.toggle_comments(&ToggleComments, cx);
8647 assert_eq!(
8648 editor.text(cx),
8649 "
8650 fn a() {
8651 b();
8652 c();
8653 d();
8654 }
8655 "
8656 .unindent()
8657 );
8658
8659 // The comment prefix is inserted at the same column for every line
8660 // in a selection.
8661 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8662 editor.toggle_comments(&ToggleComments, cx);
8663 assert_eq!(
8664 editor.text(cx),
8665 "
8666 fn a() {
8667 // b();
8668 // c();
8669 // d();
8670 }
8671 "
8672 .unindent()
8673 );
8674
8675 // If a selection ends at the beginning of a line, that line is not toggled.
8676 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8677 editor.toggle_comments(&ToggleComments, cx);
8678 assert_eq!(
8679 editor.text(cx),
8680 "
8681 fn a() {
8682 // b();
8683 c();
8684 // d();
8685 }
8686 "
8687 .unindent()
8688 );
8689 });
8690 }
8691
8692 #[gpui::test]
8693 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8694 populate_settings(cx);
8695 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8696 let multibuffer = cx.add_model(|cx| {
8697 let mut multibuffer = MultiBuffer::new(0);
8698 multibuffer.push_excerpts(
8699 buffer.clone(),
8700 [
8701 Point::new(0, 0)..Point::new(0, 4),
8702 Point::new(1, 0)..Point::new(1, 4),
8703 ],
8704 cx,
8705 );
8706 multibuffer
8707 });
8708
8709 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8710
8711 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8712 view.update(cx, |view, cx| {
8713 assert_eq!(view.text(cx), "aaaa\nbbbb");
8714 view.select_ranges(
8715 [
8716 Point::new(0, 0)..Point::new(0, 0),
8717 Point::new(1, 0)..Point::new(1, 0),
8718 ],
8719 None,
8720 cx,
8721 );
8722
8723 view.handle_input(&Input("X".to_string()), cx);
8724 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8725 assert_eq!(
8726 view.selected_ranges(cx),
8727 [
8728 Point::new(0, 1)..Point::new(0, 1),
8729 Point::new(1, 1)..Point::new(1, 1),
8730 ]
8731 )
8732 });
8733 }
8734
8735 #[gpui::test]
8736 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8737 populate_settings(cx);
8738 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8739 let multibuffer = cx.add_model(|cx| {
8740 let mut multibuffer = MultiBuffer::new(0);
8741 multibuffer.push_excerpts(
8742 buffer,
8743 [
8744 Point::new(0, 0)..Point::new(1, 4),
8745 Point::new(1, 0)..Point::new(2, 4),
8746 ],
8747 cx,
8748 );
8749 multibuffer
8750 });
8751
8752 assert_eq!(
8753 multibuffer.read(cx).read(cx).text(),
8754 "aaaa\nbbbb\nbbbb\ncccc"
8755 );
8756
8757 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8758 view.update(cx, |view, cx| {
8759 view.select_ranges(
8760 [
8761 Point::new(1, 1)..Point::new(1, 1),
8762 Point::new(2, 3)..Point::new(2, 3),
8763 ],
8764 None,
8765 cx,
8766 );
8767
8768 view.handle_input(&Input("X".to_string()), cx);
8769 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8770 assert_eq!(
8771 view.selected_ranges(cx),
8772 [
8773 Point::new(1, 2)..Point::new(1, 2),
8774 Point::new(2, 5)..Point::new(2, 5),
8775 ]
8776 );
8777
8778 view.newline(&Newline, cx);
8779 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8780 assert_eq!(
8781 view.selected_ranges(cx),
8782 [
8783 Point::new(2, 0)..Point::new(2, 0),
8784 Point::new(6, 0)..Point::new(6, 0),
8785 ]
8786 );
8787 });
8788 }
8789
8790 #[gpui::test]
8791 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8792 populate_settings(cx);
8793 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8794 let mut excerpt1_id = None;
8795 let multibuffer = cx.add_model(|cx| {
8796 let mut multibuffer = MultiBuffer::new(0);
8797 excerpt1_id = multibuffer
8798 .push_excerpts(
8799 buffer.clone(),
8800 [
8801 Point::new(0, 0)..Point::new(1, 4),
8802 Point::new(1, 0)..Point::new(2, 4),
8803 ],
8804 cx,
8805 )
8806 .into_iter()
8807 .next();
8808 multibuffer
8809 });
8810 assert_eq!(
8811 multibuffer.read(cx).read(cx).text(),
8812 "aaaa\nbbbb\nbbbb\ncccc"
8813 );
8814 let (_, editor) = cx.add_window(Default::default(), |cx| {
8815 let mut editor = build_editor(multibuffer.clone(), cx);
8816 editor.select_ranges(
8817 [
8818 Point::new(1, 3)..Point::new(1, 3),
8819 Point::new(2, 1)..Point::new(2, 1),
8820 ],
8821 None,
8822 cx,
8823 );
8824 editor
8825 });
8826
8827 // Refreshing selections is a no-op when excerpts haven't changed.
8828 editor.update(cx, |editor, cx| {
8829 editor.refresh_selections(cx);
8830 assert_eq!(
8831 editor.selected_ranges(cx),
8832 [
8833 Point::new(1, 3)..Point::new(1, 3),
8834 Point::new(2, 1)..Point::new(2, 1),
8835 ]
8836 );
8837 });
8838
8839 multibuffer.update(cx, |multibuffer, cx| {
8840 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8841 });
8842 editor.update(cx, |editor, cx| {
8843 // Removing an excerpt causes the first selection to become degenerate.
8844 assert_eq!(
8845 editor.selected_ranges(cx),
8846 [
8847 Point::new(0, 0)..Point::new(0, 0),
8848 Point::new(0, 1)..Point::new(0, 1)
8849 ]
8850 );
8851
8852 // Refreshing selections will relocate the first selection to the original buffer
8853 // location.
8854 editor.refresh_selections(cx);
8855 assert_eq!(
8856 editor.selected_ranges(cx),
8857 [
8858 Point::new(0, 1)..Point::new(0, 1),
8859 Point::new(0, 3)..Point::new(0, 3)
8860 ]
8861 );
8862 });
8863 }
8864
8865 #[gpui::test]
8866 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8867 cx.update(populate_settings);
8868 let language = Arc::new(Language::new(
8869 LanguageConfig {
8870 brackets: vec![
8871 BracketPair {
8872 start: "{".to_string(),
8873 end: "}".to_string(),
8874 close: true,
8875 newline: true,
8876 },
8877 BracketPair {
8878 start: "/* ".to_string(),
8879 end: " */".to_string(),
8880 close: true,
8881 newline: true,
8882 },
8883 ],
8884 ..Default::default()
8885 },
8886 Some(tree_sitter_rust::language()),
8887 ));
8888
8889 let text = concat!(
8890 "{ }\n", // Suppress rustfmt
8891 " x\n", //
8892 " /* */\n", //
8893 "x\n", //
8894 "{{} }\n", //
8895 );
8896
8897 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8898 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8899 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8900 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8901 .await;
8902
8903 view.update(cx, |view, cx| {
8904 view.select_display_ranges(
8905 &[
8906 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8907 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8908 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8909 ],
8910 cx,
8911 );
8912 view.newline(&Newline, cx);
8913
8914 assert_eq!(
8915 view.buffer().read(cx).read(cx).text(),
8916 concat!(
8917 "{ \n", // Suppress rustfmt
8918 "\n", //
8919 "}\n", //
8920 " x\n", //
8921 " /* \n", //
8922 " \n", //
8923 " */\n", //
8924 "x\n", //
8925 "{{} \n", //
8926 "}\n", //
8927 )
8928 );
8929 });
8930 }
8931
8932 #[gpui::test]
8933 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8934 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8935 populate_settings(cx);
8936 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
8937
8938 editor.update(cx, |editor, cx| {
8939 struct Type1;
8940 struct Type2;
8941
8942 let buffer = buffer.read(cx).snapshot(cx);
8943
8944 let anchor_range = |range: Range<Point>| {
8945 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8946 };
8947
8948 editor.highlight_background::<Type1>(
8949 vec![
8950 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8951 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8952 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8953 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8954 ],
8955 Color::red(),
8956 cx,
8957 );
8958 editor.highlight_background::<Type2>(
8959 vec![
8960 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8961 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8962 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8963 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8964 ],
8965 Color::green(),
8966 cx,
8967 );
8968
8969 let snapshot = editor.snapshot(cx);
8970 let mut highlighted_ranges = editor.background_highlights_in_range(
8971 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8972 &snapshot,
8973 );
8974 // Enforce a consistent ordering based on color without relying on the ordering of the
8975 // highlight's `TypeId` which is non-deterministic.
8976 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8977 assert_eq!(
8978 highlighted_ranges,
8979 &[
8980 (
8981 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8982 Color::green(),
8983 ),
8984 (
8985 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8986 Color::green(),
8987 ),
8988 (
8989 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8990 Color::red(),
8991 ),
8992 (
8993 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8994 Color::red(),
8995 ),
8996 ]
8997 );
8998 assert_eq!(
8999 editor.background_highlights_in_range(
9000 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9001 &snapshot,
9002 ),
9003 &[(
9004 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9005 Color::red(),
9006 )]
9007 );
9008 });
9009 }
9010
9011 #[test]
9012 fn test_combine_syntax_and_fuzzy_match_highlights() {
9013 let string = "abcdefghijklmnop";
9014 let syntax_ranges = [
9015 (
9016 0..3,
9017 HighlightStyle {
9018 color: Some(Color::red()),
9019 ..Default::default()
9020 },
9021 ),
9022 (
9023 4..8,
9024 HighlightStyle {
9025 color: Some(Color::green()),
9026 ..Default::default()
9027 },
9028 ),
9029 ];
9030 let match_indices = [4, 6, 7, 8];
9031 assert_eq!(
9032 combine_syntax_and_fuzzy_match_highlights(
9033 &string,
9034 Default::default(),
9035 syntax_ranges.into_iter(),
9036 &match_indices,
9037 ),
9038 &[
9039 (
9040 0..3,
9041 HighlightStyle {
9042 color: Some(Color::red()),
9043 ..Default::default()
9044 },
9045 ),
9046 (
9047 4..5,
9048 HighlightStyle {
9049 color: Some(Color::green()),
9050 weight: Some(fonts::Weight::BOLD),
9051 ..Default::default()
9052 },
9053 ),
9054 (
9055 5..6,
9056 HighlightStyle {
9057 color: Some(Color::green()),
9058 ..Default::default()
9059 },
9060 ),
9061 (
9062 6..8,
9063 HighlightStyle {
9064 color: Some(Color::green()),
9065 weight: Some(fonts::Weight::BOLD),
9066 ..Default::default()
9067 },
9068 ),
9069 (
9070 8..9,
9071 HighlightStyle {
9072 weight: Some(fonts::Weight::BOLD),
9073 ..Default::default()
9074 },
9075 ),
9076 ]
9077 );
9078 }
9079
9080 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9081 let point = DisplayPoint::new(row as u32, column as u32);
9082 point..point
9083 }
9084
9085 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9086 Editor::new(EditorMode::Full, buffer, None, None, cx)
9087 }
9088
9089 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9090 let settings = Settings::test(cx);
9091 cx.add_app_state(settings);
9092 }
9093}
9094
9095trait RangeExt<T> {
9096 fn sorted(&self) -> Range<T>;
9097 fn to_inclusive(&self) -> RangeInclusive<T>;
9098}
9099
9100impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9101 fn sorted(&self) -> Self {
9102 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9103 }
9104
9105 fn to_inclusive(&self) -> RangeInclusive<T> {
9106 self.start.clone()..=self.end.clone()
9107 }
9108}