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.diagnostic.severity <= DiagnosticSeverity::WARNING
4215 && !entry.range.is_empty()
4216 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4217 {
4218 Some((entry.range, entry.diagnostic.group_id))
4219 } else {
4220 None
4221 }
4222 });
4223
4224 if let Some((primary_range, group_id)) = group {
4225 self.activate_diagnostics(group_id, cx);
4226 self.update_selections(
4227 vec![Selection {
4228 id: selection.id,
4229 start: primary_range.start,
4230 end: primary_range.start,
4231 reversed: false,
4232 goal: SelectionGoal::None,
4233 }],
4234 Some(Autoscroll::Center),
4235 cx,
4236 );
4237 break;
4238 } else {
4239 // Cycle around to the start of the buffer, potentially moving back to the start of
4240 // the currently active diagnostic.
4241 active_primary_range.take();
4242 if direction == Direction::Prev {
4243 if search_start == buffer.len() {
4244 break;
4245 } else {
4246 search_start = buffer.len();
4247 }
4248 } else {
4249 if search_start == 0 {
4250 break;
4251 } else {
4252 search_start = 0;
4253 }
4254 }
4255 }
4256 }
4257 }
4258
4259 pub fn go_to_definition(
4260 workspace: &mut Workspace,
4261 _: &GoToDefinition,
4262 cx: &mut ViewContext<Workspace>,
4263 ) {
4264 let active_item = workspace.active_item(cx);
4265 let editor_handle = if let Some(editor) = active_item
4266 .as_ref()
4267 .and_then(|item| item.act_as::<Self>(cx))
4268 {
4269 editor
4270 } else {
4271 return;
4272 };
4273
4274 let editor = editor_handle.read(cx);
4275 let head = editor.newest_selection::<usize>(cx).head();
4276 let (buffer, head) =
4277 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4278 text_anchor
4279 } else {
4280 return;
4281 };
4282
4283 let definitions = workspace
4284 .project()
4285 .update(cx, |project, cx| project.definition(&buffer, head, cx));
4286 cx.spawn(|workspace, mut cx| async move {
4287 let definitions = definitions.await?;
4288 workspace.update(&mut cx, |workspace, cx| {
4289 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4290 for definition in definitions {
4291 let range = definition.range.to_offset(definition.buffer.read(cx));
4292 let target_editor_handle = workspace
4293 .open_item(BufferItemHandle(definition.buffer), cx)
4294 .downcast::<Self>()
4295 .unwrap();
4296
4297 target_editor_handle.update(cx, |target_editor, cx| {
4298 // When selecting a definition in a different buffer, disable the nav history
4299 // to avoid creating a history entry at the previous cursor location.
4300 if editor_handle != target_editor_handle {
4301 nav_history.borrow_mut().disable();
4302 }
4303 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4304 nav_history.borrow_mut().enable();
4305 });
4306 }
4307 });
4308
4309 Ok::<(), anyhow::Error>(())
4310 })
4311 .detach_and_log_err(cx);
4312 }
4313
4314 pub fn find_all_references(
4315 workspace: &mut Workspace,
4316 _: &FindAllReferences,
4317 cx: &mut ViewContext<Workspace>,
4318 ) -> Option<Task<Result<()>>> {
4319 let active_item = workspace.active_item(cx)?;
4320 let editor_handle = active_item.act_as::<Self>(cx)?;
4321
4322 let editor = editor_handle.read(cx);
4323 let head = editor.newest_selection::<usize>(cx).head();
4324 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4325 let replica_id = editor.replica_id(cx);
4326
4327 let references = workspace
4328 .project()
4329 .update(cx, |project, cx| project.references(&buffer, head, cx));
4330 Some(cx.spawn(|workspace, mut cx| async move {
4331 let mut locations = references.await?;
4332 if locations.is_empty() {
4333 return Ok(());
4334 }
4335
4336 locations.sort_by_key(|location| location.buffer.id());
4337 let mut locations = locations.into_iter().peekable();
4338 let mut ranges_to_highlight = Vec::new();
4339
4340 let excerpt_buffer = cx.add_model(|cx| {
4341 let mut symbol_name = None;
4342 let mut multibuffer = MultiBuffer::new(replica_id);
4343 while let Some(location) = locations.next() {
4344 let buffer = location.buffer.read(cx);
4345 let mut ranges_for_buffer = Vec::new();
4346 let range = location.range.to_offset(buffer);
4347 ranges_for_buffer.push(range.clone());
4348 if symbol_name.is_none() {
4349 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4350 }
4351
4352 while let Some(next_location) = locations.peek() {
4353 if next_location.buffer == location.buffer {
4354 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4355 locations.next();
4356 } else {
4357 break;
4358 }
4359 }
4360
4361 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4362 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4363 location.buffer.clone(),
4364 ranges_for_buffer,
4365 1,
4366 cx,
4367 ));
4368 }
4369 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4370 });
4371
4372 workspace.update(&mut cx, |workspace, cx| {
4373 let editor = workspace.open_item(MultiBufferItemHandle(excerpt_buffer), cx);
4374 if let Some(editor) = editor.act_as::<Self>(cx) {
4375 editor.update(cx, |editor, cx| {
4376 let color = editor.style(cx).highlighted_line_background;
4377 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4378 });
4379 }
4380 });
4381
4382 Ok(())
4383 }))
4384 }
4385
4386 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4387 use language::ToOffset as _;
4388
4389 let project = self.project.clone()?;
4390 let selection = self.newest_anchor_selection().clone();
4391 let (cursor_buffer, cursor_buffer_position) = self
4392 .buffer
4393 .read(cx)
4394 .text_anchor_for_position(selection.head(), cx)?;
4395 let (tail_buffer, _) = self
4396 .buffer
4397 .read(cx)
4398 .text_anchor_for_position(selection.tail(), cx)?;
4399 if tail_buffer != cursor_buffer {
4400 return None;
4401 }
4402
4403 let snapshot = cursor_buffer.read(cx).snapshot();
4404 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4405 let prepare_rename = project.update(cx, |project, cx| {
4406 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4407 });
4408
4409 Some(cx.spawn(|this, mut cx| async move {
4410 if let Some(rename_range) = prepare_rename.await? {
4411 let rename_buffer_range = rename_range.to_offset(&snapshot);
4412 let cursor_offset_in_rename_range =
4413 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4414
4415 this.update(&mut cx, |this, cx| {
4416 this.take_rename(false, cx);
4417 let style = this.style(cx);
4418 let buffer = this.buffer.read(cx).read(cx);
4419 let cursor_offset = selection.head().to_offset(&buffer);
4420 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4421 let rename_end = rename_start + rename_buffer_range.len();
4422 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4423 let mut old_highlight_id = None;
4424 let old_name = buffer
4425 .chunks(rename_start..rename_end, true)
4426 .map(|chunk| {
4427 if old_highlight_id.is_none() {
4428 old_highlight_id = chunk.syntax_highlight_id;
4429 }
4430 chunk.text
4431 })
4432 .collect();
4433
4434 drop(buffer);
4435
4436 // Position the selection in the rename editor so that it matches the current selection.
4437 this.show_local_selections = false;
4438 let rename_editor = cx.add_view(|cx| {
4439 let mut editor = Editor::single_line(None, cx);
4440 if let Some(old_highlight_id) = old_highlight_id {
4441 editor.override_text_style =
4442 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4443 }
4444 editor
4445 .buffer
4446 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4447 editor.select_all(&SelectAll, cx);
4448 editor
4449 });
4450
4451 let ranges = this
4452 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4453 .into_iter()
4454 .flat_map(|(_, ranges)| ranges)
4455 .chain(
4456 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4457 .into_iter()
4458 .flat_map(|(_, ranges)| ranges),
4459 )
4460 .collect();
4461 this.highlight_text::<Rename>(
4462 ranges,
4463 HighlightStyle {
4464 fade_out: Some(style.rename_fade),
4465 ..Default::default()
4466 },
4467 cx,
4468 );
4469 cx.focus(&rename_editor);
4470 let block_id = this.insert_blocks(
4471 [BlockProperties {
4472 position: range.start.clone(),
4473 height: 1,
4474 render: Arc::new({
4475 let editor = rename_editor.clone();
4476 move |cx: &BlockContext| {
4477 ChildView::new(editor.clone())
4478 .contained()
4479 .with_padding_left(cx.anchor_x)
4480 .boxed()
4481 }
4482 }),
4483 disposition: BlockDisposition::Below,
4484 }],
4485 cx,
4486 )[0];
4487 this.pending_rename = Some(RenameState {
4488 range,
4489 old_name,
4490 editor: rename_editor,
4491 block_id,
4492 });
4493 });
4494 }
4495
4496 Ok(())
4497 }))
4498 }
4499
4500 pub fn confirm_rename(
4501 workspace: &mut Workspace,
4502 _: &ConfirmRename,
4503 cx: &mut ViewContext<Workspace>,
4504 ) -> Option<Task<Result<()>>> {
4505 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4506
4507 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4508 let rename = editor.take_rename(false, cx)?;
4509 let buffer = editor.buffer.read(cx);
4510 let (start_buffer, start) =
4511 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4512 let (end_buffer, end) =
4513 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4514 if start_buffer == end_buffer {
4515 let new_name = rename.editor.read(cx).text(cx);
4516 Some((start_buffer, start..end, rename.old_name, new_name))
4517 } else {
4518 None
4519 }
4520 })?;
4521
4522 let rename = workspace.project().clone().update(cx, |project, cx| {
4523 project.perform_rename(
4524 buffer.clone(),
4525 range.start.clone(),
4526 new_name.clone(),
4527 true,
4528 cx,
4529 )
4530 });
4531
4532 Some(cx.spawn(|workspace, mut cx| async move {
4533 let project_transaction = rename.await?;
4534 Self::open_project_transaction(
4535 editor.clone(),
4536 workspace,
4537 project_transaction,
4538 format!("Rename: {} → {}", old_name, new_name),
4539 cx.clone(),
4540 )
4541 .await?;
4542
4543 editor.update(&mut cx, |editor, cx| {
4544 editor.refresh_document_highlights(cx);
4545 });
4546 Ok(())
4547 }))
4548 }
4549
4550 fn take_rename(
4551 &mut self,
4552 moving_cursor: bool,
4553 cx: &mut ViewContext<Self>,
4554 ) -> Option<RenameState> {
4555 let rename = self.pending_rename.take()?;
4556 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4557 self.clear_text_highlights::<Rename>(cx);
4558 self.show_local_selections = true;
4559
4560 if moving_cursor {
4561 let cursor_in_rename_editor =
4562 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4563
4564 // Update the selection to match the position of the selection inside
4565 // the rename editor.
4566 let snapshot = self.buffer.read(cx).read(cx);
4567 let rename_range = rename.range.to_offset(&snapshot);
4568 let cursor_in_editor = snapshot
4569 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4570 .min(rename_range.end);
4571 drop(snapshot);
4572
4573 self.update_selections(
4574 vec![Selection {
4575 id: self.newest_anchor_selection().id,
4576 start: cursor_in_editor,
4577 end: cursor_in_editor,
4578 reversed: false,
4579 goal: SelectionGoal::None,
4580 }],
4581 None,
4582 cx,
4583 );
4584 }
4585
4586 Some(rename)
4587 }
4588
4589 fn invalidate_rename_range(
4590 &mut self,
4591 buffer: &MultiBufferSnapshot,
4592 cx: &mut ViewContext<Self>,
4593 ) {
4594 if let Some(rename) = self.pending_rename.as_ref() {
4595 if self.selections.len() == 1 {
4596 let head = self.selections[0].head().to_offset(buffer);
4597 let range = rename.range.to_offset(buffer).to_inclusive();
4598 if range.contains(&head) {
4599 return;
4600 }
4601 }
4602 let rename = self.pending_rename.take().unwrap();
4603 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4604 self.clear_background_highlights::<Rename>(cx);
4605 }
4606 }
4607
4608 #[cfg(any(test, feature = "test-support"))]
4609 pub fn pending_rename(&self) -> Option<&RenameState> {
4610 self.pending_rename.as_ref()
4611 }
4612
4613 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4614 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4615 let buffer = self.buffer.read(cx).snapshot(cx);
4616 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4617 let is_valid = buffer
4618 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4619 .any(|entry| {
4620 entry.diagnostic.is_primary
4621 && !entry.range.is_empty()
4622 && entry.range.start == primary_range_start
4623 && entry.diagnostic.message == active_diagnostics.primary_message
4624 });
4625
4626 if is_valid != active_diagnostics.is_valid {
4627 active_diagnostics.is_valid = is_valid;
4628 let mut new_styles = HashMap::default();
4629 for (block_id, diagnostic) in &active_diagnostics.blocks {
4630 new_styles.insert(
4631 *block_id,
4632 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4633 );
4634 }
4635 self.display_map
4636 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4637 }
4638 }
4639 }
4640
4641 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4642 self.dismiss_diagnostics(cx);
4643 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4644 let buffer = self.buffer.read(cx).snapshot(cx);
4645
4646 let mut primary_range = None;
4647 let mut primary_message = None;
4648 let mut group_end = Point::zero();
4649 let diagnostic_group = buffer
4650 .diagnostic_group::<Point>(group_id)
4651 .map(|entry| {
4652 if entry.range.end > group_end {
4653 group_end = entry.range.end;
4654 }
4655 if entry.diagnostic.is_primary {
4656 primary_range = Some(entry.range.clone());
4657 primary_message = Some(entry.diagnostic.message.clone());
4658 }
4659 entry
4660 })
4661 .collect::<Vec<_>>();
4662 let primary_range = primary_range.unwrap();
4663 let primary_message = primary_message.unwrap();
4664 let primary_range =
4665 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4666
4667 let blocks = display_map
4668 .insert_blocks(
4669 diagnostic_group.iter().map(|entry| {
4670 let diagnostic = entry.diagnostic.clone();
4671 let message_height = diagnostic.message.lines().count() as u8;
4672 BlockProperties {
4673 position: buffer.anchor_after(entry.range.start),
4674 height: message_height,
4675 render: diagnostic_block_renderer(diagnostic, true),
4676 disposition: BlockDisposition::Below,
4677 }
4678 }),
4679 cx,
4680 )
4681 .into_iter()
4682 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4683 .collect();
4684
4685 Some(ActiveDiagnosticGroup {
4686 primary_range,
4687 primary_message,
4688 blocks,
4689 is_valid: true,
4690 })
4691 });
4692 }
4693
4694 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4695 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4696 self.display_map.update(cx, |display_map, cx| {
4697 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4698 });
4699 cx.notify();
4700 }
4701 }
4702
4703 fn build_columnar_selection(
4704 &mut self,
4705 display_map: &DisplaySnapshot,
4706 row: u32,
4707 columns: &Range<u32>,
4708 reversed: bool,
4709 ) -> Option<Selection<Point>> {
4710 let is_empty = columns.start == columns.end;
4711 let line_len = display_map.line_len(row);
4712 if columns.start < line_len || (is_empty && columns.start == line_len) {
4713 let start = DisplayPoint::new(row, columns.start);
4714 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4715 Some(Selection {
4716 id: post_inc(&mut self.next_selection_id),
4717 start: start.to_point(display_map),
4718 end: end.to_point(display_map),
4719 reversed,
4720 goal: SelectionGoal::ColumnRange {
4721 start: columns.start,
4722 end: columns.end,
4723 },
4724 })
4725 } else {
4726 None
4727 }
4728 }
4729
4730 pub fn local_selections_in_range(
4731 &self,
4732 range: Range<Anchor>,
4733 display_map: &DisplaySnapshot,
4734 ) -> Vec<Selection<Point>> {
4735 let buffer = &display_map.buffer_snapshot;
4736
4737 let start_ix = match self
4738 .selections
4739 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4740 {
4741 Ok(ix) | Err(ix) => ix,
4742 };
4743 let end_ix = match self
4744 .selections
4745 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4746 {
4747 Ok(ix) => ix + 1,
4748 Err(ix) => ix,
4749 };
4750
4751 fn point_selection(
4752 selection: &Selection<Anchor>,
4753 buffer: &MultiBufferSnapshot,
4754 ) -> Selection<Point> {
4755 let start = selection.start.to_point(&buffer);
4756 let end = selection.end.to_point(&buffer);
4757 Selection {
4758 id: selection.id,
4759 start,
4760 end,
4761 reversed: selection.reversed,
4762 goal: selection.goal,
4763 }
4764 }
4765
4766 self.selections[start_ix..end_ix]
4767 .iter()
4768 .chain(
4769 self.pending_selection
4770 .as_ref()
4771 .map(|pending| &pending.selection),
4772 )
4773 .map(|s| point_selection(s, &buffer))
4774 .collect()
4775 }
4776
4777 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4778 where
4779 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4780 {
4781 let buffer = self.buffer.read(cx).snapshot(cx);
4782 let mut selections = self
4783 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4784 .peekable();
4785
4786 let mut pending_selection = self.pending_selection::<D>(&buffer);
4787
4788 iter::from_fn(move || {
4789 if let Some(pending) = pending_selection.as_mut() {
4790 while let Some(next_selection) = selections.peek() {
4791 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4792 let next_selection = selections.next().unwrap();
4793 if next_selection.start < pending.start {
4794 pending.start = next_selection.start;
4795 }
4796 if next_selection.end > pending.end {
4797 pending.end = next_selection.end;
4798 }
4799 } else if next_selection.end < pending.start {
4800 return selections.next();
4801 } else {
4802 break;
4803 }
4804 }
4805
4806 pending_selection.take()
4807 } else {
4808 selections.next()
4809 }
4810 })
4811 .collect()
4812 }
4813
4814 fn resolve_selections<'a, D, I>(
4815 &self,
4816 selections: I,
4817 snapshot: &MultiBufferSnapshot,
4818 ) -> impl 'a + Iterator<Item = Selection<D>>
4819 where
4820 D: TextDimension + Ord + Sub<D, Output = D>,
4821 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4822 {
4823 let (to_summarize, selections) = selections.into_iter().tee();
4824 let mut summaries = snapshot
4825 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4826 .into_iter();
4827 selections.map(move |s| Selection {
4828 id: s.id,
4829 start: summaries.next().unwrap(),
4830 end: summaries.next().unwrap(),
4831 reversed: s.reversed,
4832 goal: s.goal,
4833 })
4834 }
4835
4836 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4837 &self,
4838 snapshot: &MultiBufferSnapshot,
4839 ) -> Option<Selection<D>> {
4840 self.pending_selection
4841 .as_ref()
4842 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4843 }
4844
4845 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4846 &self,
4847 selection: &Selection<Anchor>,
4848 buffer: &MultiBufferSnapshot,
4849 ) -> Selection<D> {
4850 Selection {
4851 id: selection.id,
4852 start: selection.start.summary::<D>(&buffer),
4853 end: selection.end.summary::<D>(&buffer),
4854 reversed: selection.reversed,
4855 goal: selection.goal,
4856 }
4857 }
4858
4859 fn selection_count<'a>(&self) -> usize {
4860 let mut count = self.selections.len();
4861 if self.pending_selection.is_some() {
4862 count += 1;
4863 }
4864 count
4865 }
4866
4867 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4868 &self,
4869 cx: &AppContext,
4870 ) -> Selection<D> {
4871 let snapshot = self.buffer.read(cx).read(cx);
4872 self.selections
4873 .iter()
4874 .min_by_key(|s| s.id)
4875 .map(|selection| self.resolve_selection(selection, &snapshot))
4876 .or_else(|| self.pending_selection(&snapshot))
4877 .unwrap()
4878 }
4879
4880 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4881 &self,
4882 cx: &AppContext,
4883 ) -> Selection<D> {
4884 self.resolve_selection(
4885 self.newest_anchor_selection(),
4886 &self.buffer.read(cx).read(cx),
4887 )
4888 }
4889
4890 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4891 &self,
4892 snapshot: &MultiBufferSnapshot,
4893 ) -> Selection<D> {
4894 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4895 }
4896
4897 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4898 self.pending_selection
4899 .as_ref()
4900 .map(|s| &s.selection)
4901 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4902 .unwrap()
4903 }
4904
4905 pub fn update_selections<T>(
4906 &mut self,
4907 mut selections: Vec<Selection<T>>,
4908 autoscroll: Option<Autoscroll>,
4909 cx: &mut ViewContext<Self>,
4910 ) where
4911 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4912 {
4913 let buffer = self.buffer.read(cx).snapshot(cx);
4914 selections.sort_unstable_by_key(|s| s.start);
4915
4916 // Merge overlapping selections.
4917 let mut i = 1;
4918 while i < selections.len() {
4919 if selections[i - 1].end >= selections[i].start {
4920 let removed = selections.remove(i);
4921 if removed.start < selections[i - 1].start {
4922 selections[i - 1].start = removed.start;
4923 }
4924 if removed.end > selections[i - 1].end {
4925 selections[i - 1].end = removed.end;
4926 }
4927 } else {
4928 i += 1;
4929 }
4930 }
4931
4932 if let Some(autoscroll) = autoscroll {
4933 self.request_autoscroll(autoscroll, cx);
4934 }
4935
4936 self.set_selections(
4937 Arc::from_iter(selections.into_iter().map(|selection| {
4938 let end_bias = if selection.end > selection.start {
4939 Bias::Left
4940 } else {
4941 Bias::Right
4942 };
4943 Selection {
4944 id: selection.id,
4945 start: buffer.anchor_after(selection.start),
4946 end: buffer.anchor_at(selection.end, end_bias),
4947 reversed: selection.reversed,
4948 goal: selection.goal,
4949 }
4950 })),
4951 None,
4952 cx,
4953 );
4954 }
4955
4956 /// Compute new ranges for any selections that were located in excerpts that have
4957 /// since been removed.
4958 ///
4959 /// Returns a `HashMap` indicating which selections whose former head position
4960 /// was no longer present. The keys of the map are selection ids. The values are
4961 /// the id of the new excerpt where the head of the selection has been moved.
4962 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4963 let snapshot = self.buffer.read(cx).read(cx);
4964 let anchors_with_status = snapshot.refresh_anchors(
4965 self.selections
4966 .iter()
4967 .flat_map(|selection| [&selection.start, &selection.end]),
4968 );
4969 let offsets =
4970 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4971 assert_eq!(anchors_with_status.len(), 2 * self.selections.len());
4972 assert_eq!(offsets.len(), anchors_with_status.len());
4973
4974 let offsets = offsets.chunks(2);
4975 let statuses = anchors_with_status
4976 .chunks(2)
4977 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4978
4979 let mut selections_with_lost_position = HashMap::default();
4980 let new_selections = offsets
4981 .zip(statuses)
4982 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4983 let selection = &self.selections[selection_ix];
4984 let kept_head = if selection.reversed {
4985 kept_start
4986 } else {
4987 kept_end
4988 };
4989 if !kept_head {
4990 selections_with_lost_position
4991 .insert(selection.id, selection.head().excerpt_id.clone());
4992 }
4993
4994 Selection {
4995 id: selection.id,
4996 start: offsets[0],
4997 end: offsets[1],
4998 reversed: selection.reversed,
4999 goal: selection.goal,
5000 }
5001 })
5002 .collect();
5003 drop(snapshot);
5004 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5005 selections_with_lost_position
5006 }
5007
5008 fn set_selections(
5009 &mut self,
5010 selections: Arc<[Selection<Anchor>]>,
5011 pending_selection: Option<PendingSelection>,
5012 cx: &mut ViewContext<Self>,
5013 ) {
5014 assert!(
5015 !selections.is_empty() || pending_selection.is_some(),
5016 "must have at least one selection"
5017 );
5018
5019 let old_cursor_position = self.newest_anchor_selection().head();
5020
5021 self.selections = selections;
5022 self.pending_selection = pending_selection;
5023 if self.focused {
5024 self.buffer.update(cx, |buffer, cx| {
5025 buffer.set_active_selections(&self.selections, cx)
5026 });
5027 }
5028
5029 let display_map = self
5030 .display_map
5031 .update(cx, |display_map, cx| display_map.snapshot(cx));
5032 let buffer = &display_map.buffer_snapshot;
5033 self.add_selections_state = None;
5034 self.select_next_state = None;
5035 self.select_larger_syntax_node_stack.clear();
5036 self.autoclose_stack.invalidate(&self.selections, &buffer);
5037 self.snippet_stack.invalidate(&self.selections, &buffer);
5038 self.invalidate_rename_range(&buffer, cx);
5039
5040 let new_cursor_position = self.newest_anchor_selection().head();
5041
5042 self.push_to_nav_history(
5043 old_cursor_position.clone(),
5044 Some(new_cursor_position.to_point(&buffer)),
5045 cx,
5046 );
5047
5048 let completion_menu = match self.context_menu.as_mut() {
5049 Some(ContextMenu::Completions(menu)) => Some(menu),
5050 _ => {
5051 self.context_menu.take();
5052 None
5053 }
5054 };
5055
5056 if let Some(completion_menu) = completion_menu {
5057 let cursor_position = new_cursor_position.to_offset(&buffer);
5058 let (word_range, kind) =
5059 buffer.surrounding_word(completion_menu.initial_position.clone());
5060 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5061 {
5062 let query = Self::completion_query(&buffer, cursor_position);
5063 cx.background()
5064 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5065 self.show_completions(&ShowCompletions, cx);
5066 } else {
5067 self.hide_context_menu(cx);
5068 }
5069 }
5070
5071 if old_cursor_position.to_display_point(&display_map).row()
5072 != new_cursor_position.to_display_point(&display_map).row()
5073 {
5074 self.available_code_actions.take();
5075 }
5076 self.refresh_code_actions(cx);
5077 self.refresh_document_highlights(cx);
5078
5079 self.pause_cursor_blinking(cx);
5080 cx.emit(Event::SelectionsChanged);
5081 }
5082
5083 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5084 self.autoscroll_request = Some(autoscroll);
5085 cx.notify();
5086 }
5087
5088 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5089 self.start_transaction_at(Instant::now(), cx);
5090 }
5091
5092 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5093 self.end_selection(cx);
5094 if let Some(tx_id) = self
5095 .buffer
5096 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5097 {
5098 self.selection_history
5099 .insert(tx_id, (self.selections.clone(), None));
5100 }
5101 }
5102
5103 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5104 self.end_transaction_at(Instant::now(), cx);
5105 }
5106
5107 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5108 if let Some(tx_id) = self
5109 .buffer
5110 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5111 {
5112 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5113 *end_selections = Some(self.selections.clone());
5114 } else {
5115 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5116 }
5117 }
5118 }
5119
5120 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5121 log::info!("Editor::page_up");
5122 }
5123
5124 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5125 log::info!("Editor::page_down");
5126 }
5127
5128 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5129 let mut fold_ranges = Vec::new();
5130
5131 let selections = self.local_selections::<Point>(cx);
5132 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5133 for selection in selections {
5134 let range = selection.display_range(&display_map).sorted();
5135 let buffer_start_row = range.start.to_point(&display_map).row;
5136
5137 for row in (0..=range.end.row()).rev() {
5138 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5139 let fold_range = self.foldable_range_for_line(&display_map, row);
5140 if fold_range.end.row >= buffer_start_row {
5141 fold_ranges.push(fold_range);
5142 if row <= range.start.row() {
5143 break;
5144 }
5145 }
5146 }
5147 }
5148 }
5149
5150 self.fold_ranges(fold_ranges, cx);
5151 }
5152
5153 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5154 let selections = self.local_selections::<Point>(cx);
5155 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5156 let buffer = &display_map.buffer_snapshot;
5157 let ranges = selections
5158 .iter()
5159 .map(|s| {
5160 let range = s.display_range(&display_map).sorted();
5161 let mut start = range.start.to_point(&display_map);
5162 let mut end = range.end.to_point(&display_map);
5163 start.column = 0;
5164 end.column = buffer.line_len(end.row);
5165 start..end
5166 })
5167 .collect::<Vec<_>>();
5168 self.unfold_ranges(ranges, cx);
5169 }
5170
5171 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5172 let max_point = display_map.max_point();
5173 if display_row >= max_point.row() {
5174 false
5175 } else {
5176 let (start_indent, is_blank) = display_map.line_indent(display_row);
5177 if is_blank {
5178 false
5179 } else {
5180 for display_row in display_row + 1..=max_point.row() {
5181 let (indent, is_blank) = display_map.line_indent(display_row);
5182 if !is_blank {
5183 return indent > start_indent;
5184 }
5185 }
5186 false
5187 }
5188 }
5189 }
5190
5191 fn foldable_range_for_line(
5192 &self,
5193 display_map: &DisplaySnapshot,
5194 start_row: u32,
5195 ) -> Range<Point> {
5196 let max_point = display_map.max_point();
5197
5198 let (start_indent, _) = display_map.line_indent(start_row);
5199 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5200 let mut end = None;
5201 for row in start_row + 1..=max_point.row() {
5202 let (indent, is_blank) = display_map.line_indent(row);
5203 if !is_blank && indent <= start_indent {
5204 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5205 break;
5206 }
5207 }
5208
5209 let end = end.unwrap_or(max_point);
5210 return start.to_point(display_map)..end.to_point(display_map);
5211 }
5212
5213 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5214 let selections = self.local_selections::<Point>(cx);
5215 let ranges = selections.into_iter().map(|s| s.start..s.end);
5216 self.fold_ranges(ranges, cx);
5217 }
5218
5219 fn fold_ranges<T: ToOffset>(
5220 &mut self,
5221 ranges: impl IntoIterator<Item = Range<T>>,
5222 cx: &mut ViewContext<Self>,
5223 ) {
5224 let mut ranges = ranges.into_iter().peekable();
5225 if ranges.peek().is_some() {
5226 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5227 self.request_autoscroll(Autoscroll::Fit, cx);
5228 cx.notify();
5229 }
5230 }
5231
5232 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5233 if !ranges.is_empty() {
5234 self.display_map
5235 .update(cx, |map, cx| map.unfold(ranges, cx));
5236 self.request_autoscroll(Autoscroll::Fit, cx);
5237 cx.notify();
5238 }
5239 }
5240
5241 pub fn insert_blocks(
5242 &mut self,
5243 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5244 cx: &mut ViewContext<Self>,
5245 ) -> Vec<BlockId> {
5246 let blocks = self
5247 .display_map
5248 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5249 self.request_autoscroll(Autoscroll::Fit, cx);
5250 blocks
5251 }
5252
5253 pub fn replace_blocks(
5254 &mut self,
5255 blocks: HashMap<BlockId, RenderBlock>,
5256 cx: &mut ViewContext<Self>,
5257 ) {
5258 self.display_map
5259 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5260 self.request_autoscroll(Autoscroll::Fit, cx);
5261 }
5262
5263 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5264 self.display_map.update(cx, |display_map, cx| {
5265 display_map.remove_blocks(block_ids, cx)
5266 });
5267 }
5268
5269 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5270 self.display_map
5271 .update(cx, |map, cx| map.snapshot(cx))
5272 .longest_row()
5273 }
5274
5275 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5276 self.display_map
5277 .update(cx, |map, cx| map.snapshot(cx))
5278 .max_point()
5279 }
5280
5281 pub fn text(&self, cx: &AppContext) -> String {
5282 self.buffer.read(cx).read(cx).text()
5283 }
5284
5285 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5286 self.buffer
5287 .read(cx)
5288 .as_singleton()
5289 .expect("you can only call set_text on editors for singleton buffers")
5290 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5291 }
5292
5293 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5294 self.display_map
5295 .update(cx, |map, cx| map.snapshot(cx))
5296 .text()
5297 }
5298
5299 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5300 let language = self.language(cx);
5301 let settings = cx.app_state::<Settings>();
5302 let mode = self
5303 .soft_wrap_mode_override
5304 .unwrap_or_else(|| settings.soft_wrap(language));
5305 match mode {
5306 settings::SoftWrap::None => SoftWrap::None,
5307 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5308 settings::SoftWrap::PreferredLineLength => {
5309 SoftWrap::Column(settings.preferred_line_length(language))
5310 }
5311 }
5312 }
5313
5314 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5315 self.soft_wrap_mode_override = Some(mode);
5316 cx.notify();
5317 }
5318
5319 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5320 self.display_map
5321 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5322 }
5323
5324 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5325 self.highlighted_rows = rows;
5326 }
5327
5328 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5329 self.highlighted_rows.clone()
5330 }
5331
5332 pub fn highlight_background<T: 'static>(
5333 &mut self,
5334 ranges: Vec<Range<Anchor>>,
5335 color: Color,
5336 cx: &mut ViewContext<Self>,
5337 ) {
5338 self.background_highlights
5339 .insert(TypeId::of::<T>(), (color, ranges));
5340 cx.notify();
5341 }
5342
5343 pub fn clear_background_highlights<T: 'static>(
5344 &mut self,
5345 cx: &mut ViewContext<Self>,
5346 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5347 cx.notify();
5348 self.background_highlights.remove(&TypeId::of::<T>())
5349 }
5350
5351 #[cfg(feature = "test-support")]
5352 pub fn all_background_highlights(
5353 &mut self,
5354 cx: &mut ViewContext<Self>,
5355 ) -> Vec<(Range<DisplayPoint>, Color)> {
5356 let snapshot = self.snapshot(cx);
5357 let buffer = &snapshot.buffer_snapshot;
5358 let start = buffer.anchor_before(0);
5359 let end = buffer.anchor_after(buffer.len());
5360 self.background_highlights_in_range(start..end, &snapshot)
5361 }
5362
5363 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5364 self.background_highlights
5365 .get(&TypeId::of::<T>())
5366 .map(|(color, ranges)| (*color, ranges.as_slice()))
5367 }
5368
5369 pub fn background_highlights_in_range(
5370 &self,
5371 search_range: Range<Anchor>,
5372 display_snapshot: &DisplaySnapshot,
5373 ) -> Vec<(Range<DisplayPoint>, Color)> {
5374 let mut results = Vec::new();
5375 let buffer = &display_snapshot.buffer_snapshot;
5376 for (color, ranges) in self.background_highlights.values() {
5377 let start_ix = match ranges.binary_search_by(|probe| {
5378 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5379 if cmp.is_gt() {
5380 Ordering::Greater
5381 } else {
5382 Ordering::Less
5383 }
5384 }) {
5385 Ok(i) | Err(i) => i,
5386 };
5387 for range in &ranges[start_ix..] {
5388 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5389 break;
5390 }
5391 let start = range
5392 .start
5393 .to_point(buffer)
5394 .to_display_point(display_snapshot);
5395 let end = range
5396 .end
5397 .to_point(buffer)
5398 .to_display_point(display_snapshot);
5399 results.push((start..end, *color))
5400 }
5401 }
5402 results
5403 }
5404
5405 pub fn highlight_text<T: 'static>(
5406 &mut self,
5407 ranges: Vec<Range<Anchor>>,
5408 style: HighlightStyle,
5409 cx: &mut ViewContext<Self>,
5410 ) {
5411 self.display_map.update(cx, |map, _| {
5412 map.highlight_text(TypeId::of::<T>(), ranges, style)
5413 });
5414 cx.notify();
5415 }
5416
5417 pub fn clear_text_highlights<T: 'static>(
5418 &mut self,
5419 cx: &mut ViewContext<Self>,
5420 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5421 cx.notify();
5422 self.display_map
5423 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5424 }
5425
5426 fn next_blink_epoch(&mut self) -> usize {
5427 self.blink_epoch += 1;
5428 self.blink_epoch
5429 }
5430
5431 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5432 if !self.focused {
5433 return;
5434 }
5435
5436 self.show_local_cursors = true;
5437 cx.notify();
5438
5439 let epoch = self.next_blink_epoch();
5440 cx.spawn(|this, mut cx| {
5441 let this = this.downgrade();
5442 async move {
5443 Timer::after(CURSOR_BLINK_INTERVAL).await;
5444 if let Some(this) = this.upgrade(&cx) {
5445 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5446 }
5447 }
5448 })
5449 .detach();
5450 }
5451
5452 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5453 if epoch == self.blink_epoch {
5454 self.blinking_paused = false;
5455 self.blink_cursors(epoch, cx);
5456 }
5457 }
5458
5459 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5460 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5461 self.show_local_cursors = !self.show_local_cursors;
5462 cx.notify();
5463
5464 let epoch = self.next_blink_epoch();
5465 cx.spawn(|this, mut cx| {
5466 let this = this.downgrade();
5467 async move {
5468 Timer::after(CURSOR_BLINK_INTERVAL).await;
5469 if let Some(this) = this.upgrade(&cx) {
5470 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5471 }
5472 }
5473 })
5474 .detach();
5475 }
5476 }
5477
5478 pub fn show_local_cursors(&self) -> bool {
5479 self.show_local_cursors
5480 }
5481
5482 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5483 cx.notify();
5484 }
5485
5486 fn on_buffer_event(
5487 &mut self,
5488 _: ModelHandle<MultiBuffer>,
5489 event: &language::Event,
5490 cx: &mut ViewContext<Self>,
5491 ) {
5492 match event {
5493 language::Event::Edited => {
5494 self.refresh_active_diagnostics(cx);
5495 self.refresh_code_actions(cx);
5496 cx.emit(Event::Edited);
5497 }
5498 language::Event::Dirtied => cx.emit(Event::Dirtied),
5499 language::Event::Saved => cx.emit(Event::Saved),
5500 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5501 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5502 language::Event::Closed => cx.emit(Event::Closed),
5503 language::Event::DiagnosticsUpdated => {
5504 self.refresh_active_diagnostics(cx);
5505 }
5506 _ => {}
5507 }
5508 }
5509
5510 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5511 cx.notify();
5512 }
5513
5514 pub fn set_searchable(&mut self, searchable: bool) {
5515 self.searchable = searchable;
5516 }
5517
5518 pub fn searchable(&self) -> bool {
5519 self.searchable
5520 }
5521
5522 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5523 let active_item = workspace.active_item(cx);
5524 let editor_handle = if let Some(editor) = active_item
5525 .as_ref()
5526 .and_then(|item| item.act_as::<Self>(cx))
5527 {
5528 editor
5529 } else {
5530 cx.propagate_action();
5531 return;
5532 };
5533
5534 let editor = editor_handle.read(cx);
5535 let buffer = editor.buffer.read(cx);
5536 if buffer.is_singleton() {
5537 cx.propagate_action();
5538 return;
5539 }
5540
5541 let mut new_selections_by_buffer = HashMap::default();
5542 for selection in editor.local_selections::<usize>(cx) {
5543 for (buffer, mut range) in
5544 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5545 {
5546 if selection.reversed {
5547 mem::swap(&mut range.start, &mut range.end);
5548 }
5549 new_selections_by_buffer
5550 .entry(buffer)
5551 .or_insert(Vec::new())
5552 .push(range)
5553 }
5554 }
5555
5556 editor_handle.update(cx, |editor, cx| {
5557 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5558 });
5559 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5560 nav_history.borrow_mut().disable();
5561
5562 // We defer the pane interaction because we ourselves are a workspace item
5563 // and activating a new item causes the pane to call a method on us reentrantly,
5564 // which panics if we're on the stack.
5565 cx.defer(move |workspace, cx| {
5566 for (ix, (buffer, ranges)) in new_selections_by_buffer.into_iter().enumerate() {
5567 let buffer = BufferItemHandle(buffer);
5568 if ix == 0 && !workspace.activate_pane_for_item(&buffer, cx) {
5569 workspace.activate_next_pane(cx);
5570 }
5571
5572 let editor = workspace
5573 .open_item(buffer, cx)
5574 .downcast::<Editor>()
5575 .unwrap();
5576
5577 editor.update(cx, |editor, cx| {
5578 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5579 });
5580 }
5581
5582 nav_history.borrow_mut().enable();
5583 });
5584 }
5585}
5586
5587impl EditorSnapshot {
5588 pub fn is_focused(&self) -> bool {
5589 self.is_focused
5590 }
5591
5592 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5593 self.placeholder_text.as_ref()
5594 }
5595
5596 pub fn scroll_position(&self) -> Vector2F {
5597 compute_scroll_position(
5598 &self.display_snapshot,
5599 self.scroll_position,
5600 &self.scroll_top_anchor,
5601 )
5602 }
5603}
5604
5605impl Deref for EditorSnapshot {
5606 type Target = DisplaySnapshot;
5607
5608 fn deref(&self) -> &Self::Target {
5609 &self.display_snapshot
5610 }
5611}
5612
5613fn compute_scroll_position(
5614 snapshot: &DisplaySnapshot,
5615 mut scroll_position: Vector2F,
5616 scroll_top_anchor: &Option<Anchor>,
5617) -> Vector2F {
5618 if let Some(anchor) = scroll_top_anchor {
5619 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5620 scroll_position.set_y(scroll_top + scroll_position.y());
5621 } else {
5622 scroll_position.set_y(0.);
5623 }
5624 scroll_position
5625}
5626
5627#[derive(Copy, Clone)]
5628pub enum Event {
5629 Activate,
5630 Edited,
5631 Blurred,
5632 Dirtied,
5633 Saved,
5634 TitleChanged,
5635 SelectionsChanged,
5636 Closed,
5637}
5638
5639impl Entity for Editor {
5640 type Event = Event;
5641}
5642
5643impl View for Editor {
5644 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5645 let style = self.style(cx);
5646 self.display_map.update(cx, |map, cx| {
5647 map.set_font(style.text.font_id, style.text.font_size, cx)
5648 });
5649 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5650 }
5651
5652 fn ui_name() -> &'static str {
5653 "Editor"
5654 }
5655
5656 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5657 if let Some(rename) = self.pending_rename.as_ref() {
5658 cx.focus(&rename.editor);
5659 } else {
5660 self.focused = true;
5661 self.blink_cursors(self.blink_epoch, cx);
5662 self.buffer.update(cx, |buffer, cx| {
5663 buffer.finalize_last_transaction(cx);
5664 buffer.set_active_selections(&self.selections, cx)
5665 });
5666 }
5667 }
5668
5669 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5670 self.focused = false;
5671 self.buffer
5672 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5673 self.hide_context_menu(cx);
5674 cx.emit(Event::Blurred);
5675 cx.notify();
5676 }
5677
5678 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5679 let mut cx = Self::default_keymap_context();
5680 let mode = match self.mode {
5681 EditorMode::SingleLine => "single_line",
5682 EditorMode::AutoHeight { .. } => "auto_height",
5683 EditorMode::Full => "full",
5684 };
5685 cx.map.insert("mode".into(), mode.into());
5686 if self.pending_rename.is_some() {
5687 cx.set.insert("renaming".into());
5688 }
5689 match self.context_menu.as_ref() {
5690 Some(ContextMenu::Completions(_)) => {
5691 cx.set.insert("showing_completions".into());
5692 }
5693 Some(ContextMenu::CodeActions(_)) => {
5694 cx.set.insert("showing_code_actions".into());
5695 }
5696 None => {}
5697 }
5698 cx
5699 }
5700}
5701
5702fn build_style(
5703 settings: &Settings,
5704 get_field_editor_theme: Option<GetFieldEditorTheme>,
5705 override_text_style: Option<&OverrideTextStyle>,
5706 cx: &AppContext,
5707) -> EditorStyle {
5708 let font_cache = cx.font_cache();
5709
5710 let mut theme = settings.theme.editor.clone();
5711 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5712 let field_editor_theme = get_field_editor_theme(&settings.theme);
5713 theme.text_color = field_editor_theme.text.color;
5714 theme.selection = field_editor_theme.selection;
5715 theme.background = field_editor_theme
5716 .container
5717 .background_color
5718 .unwrap_or_default();
5719 EditorStyle {
5720 text: field_editor_theme.text,
5721 placeholder_text: field_editor_theme.placeholder_text,
5722 theme,
5723 }
5724 } else {
5725 let font_family_id = settings.buffer_font_family;
5726 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5727 let font_properties = Default::default();
5728 let font_id = font_cache
5729 .select_font(font_family_id, &font_properties)
5730 .unwrap();
5731 let font_size = settings.buffer_font_size;
5732 EditorStyle {
5733 text: TextStyle {
5734 color: settings.theme.editor.text_color,
5735 font_family_name,
5736 font_family_id,
5737 font_id,
5738 font_size,
5739 font_properties,
5740 underline: Default::default(),
5741 },
5742 placeholder_text: None,
5743 theme,
5744 }
5745 };
5746
5747 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5748 if let Some(highlighted) = style
5749 .text
5750 .clone()
5751 .highlight(highlight_style, font_cache)
5752 .log_err()
5753 {
5754 style.text = highlighted;
5755 }
5756 }
5757
5758 style
5759}
5760
5761impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5762 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5763 let start = self.start.to_point(buffer);
5764 let end = self.end.to_point(buffer);
5765 if self.reversed {
5766 end..start
5767 } else {
5768 start..end
5769 }
5770 }
5771
5772 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5773 let start = self.start.to_offset(buffer);
5774 let end = self.end.to_offset(buffer);
5775 if self.reversed {
5776 end..start
5777 } else {
5778 start..end
5779 }
5780 }
5781
5782 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5783 let start = self
5784 .start
5785 .to_point(&map.buffer_snapshot)
5786 .to_display_point(map);
5787 let end = self
5788 .end
5789 .to_point(&map.buffer_snapshot)
5790 .to_display_point(map);
5791 if self.reversed {
5792 end..start
5793 } else {
5794 start..end
5795 }
5796 }
5797
5798 fn spanned_rows(
5799 &self,
5800 include_end_if_at_line_start: bool,
5801 map: &DisplaySnapshot,
5802 ) -> Range<u32> {
5803 let start = self.start.to_point(&map.buffer_snapshot);
5804 let mut end = self.end.to_point(&map.buffer_snapshot);
5805 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5806 end.row -= 1;
5807 }
5808
5809 let buffer_start = map.prev_line_boundary(start).0;
5810 let buffer_end = map.next_line_boundary(end).0;
5811 buffer_start.row..buffer_end.row + 1
5812 }
5813}
5814
5815impl<T: InvalidationRegion> InvalidationStack<T> {
5816 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5817 where
5818 S: Clone + ToOffset,
5819 {
5820 while let Some(region) = self.last() {
5821 let all_selections_inside_invalidation_ranges =
5822 if selections.len() == region.ranges().len() {
5823 selections
5824 .iter()
5825 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5826 .all(|(selection, invalidation_range)| {
5827 let head = selection.head().to_offset(&buffer);
5828 invalidation_range.start <= head && invalidation_range.end >= head
5829 })
5830 } else {
5831 false
5832 };
5833
5834 if all_selections_inside_invalidation_ranges {
5835 break;
5836 } else {
5837 self.pop();
5838 }
5839 }
5840 }
5841}
5842
5843impl<T> Default for InvalidationStack<T> {
5844 fn default() -> Self {
5845 Self(Default::default())
5846 }
5847}
5848
5849impl<T> Deref for InvalidationStack<T> {
5850 type Target = Vec<T>;
5851
5852 fn deref(&self) -> &Self::Target {
5853 &self.0
5854 }
5855}
5856
5857impl<T> DerefMut for InvalidationStack<T> {
5858 fn deref_mut(&mut self) -> &mut Self::Target {
5859 &mut self.0
5860 }
5861}
5862
5863impl InvalidationRegion for BracketPairState {
5864 fn ranges(&self) -> &[Range<Anchor>] {
5865 &self.ranges
5866 }
5867}
5868
5869impl InvalidationRegion for SnippetState {
5870 fn ranges(&self) -> &[Range<Anchor>] {
5871 &self.ranges[self.active_index]
5872 }
5873}
5874
5875impl Deref for EditorStyle {
5876 type Target = theme::Editor;
5877
5878 fn deref(&self) -> &Self::Target {
5879 &self.theme
5880 }
5881}
5882
5883pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5884 let mut highlighted_lines = Vec::new();
5885 for line in diagnostic.message.lines() {
5886 highlighted_lines.push(highlight_diagnostic_message(line));
5887 }
5888
5889 Arc::new(move |cx: &BlockContext| {
5890 let settings = cx.app_state::<Settings>();
5891 let theme = &settings.theme.editor;
5892 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5893 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5894 Flex::column()
5895 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5896 Label::new(
5897 line.clone(),
5898 style.message.clone().with_font_size(font_size),
5899 )
5900 .with_highlights(highlights.clone())
5901 .contained()
5902 .with_margin_left(cx.anchor_x)
5903 .boxed()
5904 }))
5905 .aligned()
5906 .left()
5907 .boxed()
5908 })
5909}
5910
5911pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5912 let mut message_without_backticks = String::new();
5913 let mut prev_offset = 0;
5914 let mut inside_block = false;
5915 let mut highlights = Vec::new();
5916 for (match_ix, (offset, _)) in message
5917 .match_indices('`')
5918 .chain([(message.len(), "")])
5919 .enumerate()
5920 {
5921 message_without_backticks.push_str(&message[prev_offset..offset]);
5922 if inside_block {
5923 highlights.extend(prev_offset - match_ix..offset - match_ix);
5924 }
5925
5926 inside_block = !inside_block;
5927 prev_offset = offset + 1;
5928 }
5929
5930 (message_without_backticks, highlights)
5931}
5932
5933pub fn diagnostic_style(
5934 severity: DiagnosticSeverity,
5935 valid: bool,
5936 theme: &theme::Editor,
5937) -> DiagnosticStyle {
5938 match (severity, valid) {
5939 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5940 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5941 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5942 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5943 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5944 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5945 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5946 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5947 _ => theme.invalid_hint_diagnostic.clone(),
5948 }
5949}
5950
5951pub fn combine_syntax_and_fuzzy_match_highlights(
5952 text: &str,
5953 default_style: HighlightStyle,
5954 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5955 match_indices: &[usize],
5956) -> Vec<(Range<usize>, HighlightStyle)> {
5957 let mut result = Vec::new();
5958 let mut match_indices = match_indices.iter().copied().peekable();
5959
5960 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5961 {
5962 syntax_highlight.weight = None;
5963
5964 // Add highlights for any fuzzy match characters before the next
5965 // syntax highlight range.
5966 while let Some(&match_index) = match_indices.peek() {
5967 if match_index >= range.start {
5968 break;
5969 }
5970 match_indices.next();
5971 let end_index = char_ix_after(match_index, text);
5972 let mut match_style = default_style;
5973 match_style.weight = Some(fonts::Weight::BOLD);
5974 result.push((match_index..end_index, match_style));
5975 }
5976
5977 if range.start == usize::MAX {
5978 break;
5979 }
5980
5981 // Add highlights for any fuzzy match characters within the
5982 // syntax highlight range.
5983 let mut offset = range.start;
5984 while let Some(&match_index) = match_indices.peek() {
5985 if match_index >= range.end {
5986 break;
5987 }
5988
5989 match_indices.next();
5990 if match_index > offset {
5991 result.push((offset..match_index, syntax_highlight));
5992 }
5993
5994 let mut end_index = char_ix_after(match_index, text);
5995 while let Some(&next_match_index) = match_indices.peek() {
5996 if next_match_index == end_index && next_match_index < range.end {
5997 end_index = char_ix_after(next_match_index, text);
5998 match_indices.next();
5999 } else {
6000 break;
6001 }
6002 }
6003
6004 let mut match_style = syntax_highlight;
6005 match_style.weight = Some(fonts::Weight::BOLD);
6006 result.push((match_index..end_index, match_style));
6007 offset = end_index;
6008 }
6009
6010 if offset < range.end {
6011 result.push((offset..range.end, syntax_highlight));
6012 }
6013 }
6014
6015 fn char_ix_after(ix: usize, text: &str) -> usize {
6016 ix + text[ix..].chars().next().unwrap().len_utf8()
6017 }
6018
6019 result
6020}
6021
6022pub fn styled_runs_for_code_label<'a>(
6023 label: &'a CodeLabel,
6024 syntax_theme: &'a theme::SyntaxTheme,
6025) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6026 let fade_out = HighlightStyle {
6027 fade_out: Some(0.35),
6028 ..Default::default()
6029 };
6030
6031 let mut prev_end = label.filter_range.end;
6032 label
6033 .runs
6034 .iter()
6035 .enumerate()
6036 .flat_map(move |(ix, (range, highlight_id))| {
6037 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6038 style
6039 } else {
6040 return Default::default();
6041 };
6042 let mut muted_style = style.clone();
6043 muted_style.highlight(fade_out);
6044
6045 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6046 if range.start >= label.filter_range.end {
6047 if range.start > prev_end {
6048 runs.push((prev_end..range.start, fade_out));
6049 }
6050 runs.push((range.clone(), muted_style));
6051 } else if range.end <= label.filter_range.end {
6052 runs.push((range.clone(), style));
6053 } else {
6054 runs.push((range.start..label.filter_range.end, style));
6055 runs.push((label.filter_range.end..range.end, muted_style));
6056 }
6057 prev_end = cmp::max(prev_end, range.end);
6058
6059 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6060 runs.push((prev_end..label.text.len(), fade_out));
6061 }
6062
6063 runs
6064 })
6065}
6066
6067#[cfg(test)]
6068mod tests {
6069 use super::*;
6070 use language::{LanguageConfig, LanguageServerConfig};
6071 use lsp::FakeLanguageServer;
6072 use project::FakeFs;
6073 use smol::stream::StreamExt;
6074 use std::{cell::RefCell, rc::Rc, time::Instant};
6075 use text::Point;
6076 use unindent::Unindent;
6077 use util::test::sample_text;
6078
6079 #[gpui::test]
6080 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6081 populate_settings(cx);
6082 let mut now = Instant::now();
6083 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6084 let group_interval = buffer.read(cx).transaction_group_interval();
6085 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6086 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6087
6088 editor.update(cx, |editor, cx| {
6089 editor.start_transaction_at(now, cx);
6090 editor.select_ranges([2..4], None, cx);
6091 editor.insert("cd", cx);
6092 editor.end_transaction_at(now, cx);
6093 assert_eq!(editor.text(cx), "12cd56");
6094 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6095
6096 editor.start_transaction_at(now, cx);
6097 editor.select_ranges([4..5], None, cx);
6098 editor.insert("e", cx);
6099 editor.end_transaction_at(now, cx);
6100 assert_eq!(editor.text(cx), "12cde6");
6101 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6102
6103 now += group_interval + Duration::from_millis(1);
6104 editor.select_ranges([2..2], None, cx);
6105
6106 // Simulate an edit in another editor
6107 buffer.update(cx, |buffer, cx| {
6108 buffer.start_transaction_at(now, cx);
6109 buffer.edit([0..1], "a", cx);
6110 buffer.edit([1..1], "b", cx);
6111 buffer.end_transaction_at(now, cx);
6112 });
6113
6114 assert_eq!(editor.text(cx), "ab2cde6");
6115 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6116
6117 // Last transaction happened past the group interval in a different editor.
6118 // Undo it individually and don't restore selections.
6119 editor.undo(&Undo, cx);
6120 assert_eq!(editor.text(cx), "12cde6");
6121 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6122
6123 // First two transactions happened within the group interval in this editor.
6124 // Undo them together and restore selections.
6125 editor.undo(&Undo, cx);
6126 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6127 assert_eq!(editor.text(cx), "123456");
6128 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6129
6130 // Redo the first two transactions together.
6131 editor.redo(&Redo, cx);
6132 assert_eq!(editor.text(cx), "12cde6");
6133 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6134
6135 // Redo the last transaction on its own.
6136 editor.redo(&Redo, cx);
6137 assert_eq!(editor.text(cx), "ab2cde6");
6138 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6139
6140 // Test empty transactions.
6141 editor.start_transaction_at(now, cx);
6142 editor.end_transaction_at(now, cx);
6143 editor.undo(&Undo, cx);
6144 assert_eq!(editor.text(cx), "12cde6");
6145 });
6146 }
6147
6148 #[gpui::test]
6149 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6150 populate_settings(cx);
6151 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6152 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6153
6154 editor.update(cx, |view, cx| {
6155 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6156 });
6157
6158 assert_eq!(
6159 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6160 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6161 );
6162
6163 editor.update(cx, |view, cx| {
6164 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6165 });
6166
6167 assert_eq!(
6168 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6169 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6170 );
6171
6172 editor.update(cx, |view, cx| {
6173 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6174 });
6175
6176 assert_eq!(
6177 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6178 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6179 );
6180
6181 editor.update(cx, |view, cx| {
6182 view.end_selection(cx);
6183 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6184 });
6185
6186 assert_eq!(
6187 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6188 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6189 );
6190
6191 editor.update(cx, |view, cx| {
6192 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6193 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6194 });
6195
6196 assert_eq!(
6197 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6198 [
6199 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6200 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6201 ]
6202 );
6203
6204 editor.update(cx, |view, cx| {
6205 view.end_selection(cx);
6206 });
6207
6208 assert_eq!(
6209 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6210 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6211 );
6212 }
6213
6214 #[gpui::test]
6215 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6216 populate_settings(cx);
6217 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6218 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6219
6220 view.update(cx, |view, cx| {
6221 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6222 assert_eq!(
6223 view.selected_display_ranges(cx),
6224 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6225 );
6226 });
6227
6228 view.update(cx, |view, cx| {
6229 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6230 assert_eq!(
6231 view.selected_display_ranges(cx),
6232 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6233 );
6234 });
6235
6236 view.update(cx, |view, cx| {
6237 view.cancel(&Cancel, cx);
6238 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6239 assert_eq!(
6240 view.selected_display_ranges(cx),
6241 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6242 );
6243 });
6244 }
6245
6246 #[gpui::test]
6247 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6248 populate_settings(cx);
6249 use workspace::ItemView;
6250 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6251 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6252
6253 cx.add_window(Default::default(), |cx| {
6254 let mut editor = build_editor(buffer.clone(), cx);
6255 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6256
6257 // Move the cursor a small distance.
6258 // Nothing is added to the navigation history.
6259 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6260 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6261 assert!(nav_history.borrow_mut().pop_backward().is_none());
6262
6263 // Move the cursor a large distance.
6264 // The history can jump back to the previous position.
6265 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6266 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6267 editor.navigate(nav_entry.data.unwrap(), cx);
6268 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6269 assert_eq!(
6270 editor.selected_display_ranges(cx),
6271 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6272 );
6273
6274 // Move the cursor a small distance via the mouse.
6275 // Nothing is added to the navigation history.
6276 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6277 editor.end_selection(cx);
6278 assert_eq!(
6279 editor.selected_display_ranges(cx),
6280 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6281 );
6282 assert!(nav_history.borrow_mut().pop_backward().is_none());
6283
6284 // Move the cursor a large distance via the mouse.
6285 // The history can jump back to the previous position.
6286 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6287 editor.end_selection(cx);
6288 assert_eq!(
6289 editor.selected_display_ranges(cx),
6290 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6291 );
6292 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6293 editor.navigate(nav_entry.data.unwrap(), cx);
6294 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6295 assert_eq!(
6296 editor.selected_display_ranges(cx),
6297 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6298 );
6299
6300 editor
6301 });
6302 }
6303
6304 #[gpui::test]
6305 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6306 populate_settings(cx);
6307 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6308 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6309
6310 view.update(cx, |view, cx| {
6311 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6312 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6313 view.end_selection(cx);
6314
6315 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6316 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6317 view.end_selection(cx);
6318 assert_eq!(
6319 view.selected_display_ranges(cx),
6320 [
6321 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6322 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6323 ]
6324 );
6325 });
6326
6327 view.update(cx, |view, cx| {
6328 view.cancel(&Cancel, cx);
6329 assert_eq!(
6330 view.selected_display_ranges(cx),
6331 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6332 );
6333 });
6334
6335 view.update(cx, |view, cx| {
6336 view.cancel(&Cancel, cx);
6337 assert_eq!(
6338 view.selected_display_ranges(cx),
6339 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6340 );
6341 });
6342 }
6343
6344 #[gpui::test]
6345 fn test_fold(cx: &mut gpui::MutableAppContext) {
6346 populate_settings(cx);
6347 let buffer = MultiBuffer::build_simple(
6348 &"
6349 impl Foo {
6350 // Hello!
6351
6352 fn a() {
6353 1
6354 }
6355
6356 fn b() {
6357 2
6358 }
6359
6360 fn c() {
6361 3
6362 }
6363 }
6364 "
6365 .unindent(),
6366 cx,
6367 );
6368 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6369
6370 view.update(cx, |view, cx| {
6371 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6372 view.fold(&Fold, cx);
6373 assert_eq!(
6374 view.display_text(cx),
6375 "
6376 impl Foo {
6377 // Hello!
6378
6379 fn a() {
6380 1
6381 }
6382
6383 fn b() {…
6384 }
6385
6386 fn c() {…
6387 }
6388 }
6389 "
6390 .unindent(),
6391 );
6392
6393 view.fold(&Fold, cx);
6394 assert_eq!(
6395 view.display_text(cx),
6396 "
6397 impl Foo {…
6398 }
6399 "
6400 .unindent(),
6401 );
6402
6403 view.unfold(&Unfold, cx);
6404 assert_eq!(
6405 view.display_text(cx),
6406 "
6407 impl Foo {
6408 // Hello!
6409
6410 fn a() {
6411 1
6412 }
6413
6414 fn b() {…
6415 }
6416
6417 fn c() {…
6418 }
6419 }
6420 "
6421 .unindent(),
6422 );
6423
6424 view.unfold(&Unfold, cx);
6425 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6426 });
6427 }
6428
6429 #[gpui::test]
6430 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6431 populate_settings(cx);
6432 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6433 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6434
6435 buffer.update(cx, |buffer, cx| {
6436 buffer.edit(
6437 vec![
6438 Point::new(1, 0)..Point::new(1, 0),
6439 Point::new(1, 1)..Point::new(1, 1),
6440 ],
6441 "\t",
6442 cx,
6443 );
6444 });
6445
6446 view.update(cx, |view, cx| {
6447 assert_eq!(
6448 view.selected_display_ranges(cx),
6449 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6450 );
6451
6452 view.move_down(&MoveDown, cx);
6453 assert_eq!(
6454 view.selected_display_ranges(cx),
6455 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6456 );
6457
6458 view.move_right(&MoveRight, cx);
6459 assert_eq!(
6460 view.selected_display_ranges(cx),
6461 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6462 );
6463
6464 view.move_left(&MoveLeft, cx);
6465 assert_eq!(
6466 view.selected_display_ranges(cx),
6467 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6468 );
6469
6470 view.move_up(&MoveUp, cx);
6471 assert_eq!(
6472 view.selected_display_ranges(cx),
6473 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6474 );
6475
6476 view.move_to_end(&MoveToEnd, cx);
6477 assert_eq!(
6478 view.selected_display_ranges(cx),
6479 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6480 );
6481
6482 view.move_to_beginning(&MoveToBeginning, cx);
6483 assert_eq!(
6484 view.selected_display_ranges(cx),
6485 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6486 );
6487
6488 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6489 view.select_to_beginning(&SelectToBeginning, cx);
6490 assert_eq!(
6491 view.selected_display_ranges(cx),
6492 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6493 );
6494
6495 view.select_to_end(&SelectToEnd, cx);
6496 assert_eq!(
6497 view.selected_display_ranges(cx),
6498 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6499 );
6500 });
6501 }
6502
6503 #[gpui::test]
6504 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6505 populate_settings(cx);
6506 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6507 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6508
6509 assert_eq!('ⓐ'.len_utf8(), 3);
6510 assert_eq!('α'.len_utf8(), 2);
6511
6512 view.update(cx, |view, cx| {
6513 view.fold_ranges(
6514 vec![
6515 Point::new(0, 6)..Point::new(0, 12),
6516 Point::new(1, 2)..Point::new(1, 4),
6517 Point::new(2, 4)..Point::new(2, 8),
6518 ],
6519 cx,
6520 );
6521 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6522
6523 view.move_right(&MoveRight, cx);
6524 assert_eq!(
6525 view.selected_display_ranges(cx),
6526 &[empty_range(0, "ⓐ".len())]
6527 );
6528 view.move_right(&MoveRight, cx);
6529 assert_eq!(
6530 view.selected_display_ranges(cx),
6531 &[empty_range(0, "ⓐⓑ".len())]
6532 );
6533 view.move_right(&MoveRight, cx);
6534 assert_eq!(
6535 view.selected_display_ranges(cx),
6536 &[empty_range(0, "ⓐⓑ…".len())]
6537 );
6538
6539 view.move_down(&MoveDown, cx);
6540 assert_eq!(
6541 view.selected_display_ranges(cx),
6542 &[empty_range(1, "ab…".len())]
6543 );
6544 view.move_left(&MoveLeft, cx);
6545 assert_eq!(
6546 view.selected_display_ranges(cx),
6547 &[empty_range(1, "ab".len())]
6548 );
6549 view.move_left(&MoveLeft, cx);
6550 assert_eq!(
6551 view.selected_display_ranges(cx),
6552 &[empty_range(1, "a".len())]
6553 );
6554
6555 view.move_down(&MoveDown, cx);
6556 assert_eq!(
6557 view.selected_display_ranges(cx),
6558 &[empty_range(2, "α".len())]
6559 );
6560 view.move_right(&MoveRight, cx);
6561 assert_eq!(
6562 view.selected_display_ranges(cx),
6563 &[empty_range(2, "αβ".len())]
6564 );
6565 view.move_right(&MoveRight, cx);
6566 assert_eq!(
6567 view.selected_display_ranges(cx),
6568 &[empty_range(2, "αβ…".len())]
6569 );
6570 view.move_right(&MoveRight, cx);
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 &[empty_range(2, "αβ…ε".len())]
6574 );
6575
6576 view.move_up(&MoveUp, cx);
6577 assert_eq!(
6578 view.selected_display_ranges(cx),
6579 &[empty_range(1, "ab…e".len())]
6580 );
6581 view.move_up(&MoveUp, cx);
6582 assert_eq!(
6583 view.selected_display_ranges(cx),
6584 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6585 );
6586 view.move_left(&MoveLeft, cx);
6587 assert_eq!(
6588 view.selected_display_ranges(cx),
6589 &[empty_range(0, "ⓐⓑ…".len())]
6590 );
6591 view.move_left(&MoveLeft, cx);
6592 assert_eq!(
6593 view.selected_display_ranges(cx),
6594 &[empty_range(0, "ⓐⓑ".len())]
6595 );
6596 view.move_left(&MoveLeft, cx);
6597 assert_eq!(
6598 view.selected_display_ranges(cx),
6599 &[empty_range(0, "ⓐ".len())]
6600 );
6601 });
6602 }
6603
6604 #[gpui::test]
6605 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6606 populate_settings(cx);
6607 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6608 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6609 view.update(cx, |view, cx| {
6610 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6611 view.move_down(&MoveDown, cx);
6612 assert_eq!(
6613 view.selected_display_ranges(cx),
6614 &[empty_range(1, "abcd".len())]
6615 );
6616
6617 view.move_down(&MoveDown, cx);
6618 assert_eq!(
6619 view.selected_display_ranges(cx),
6620 &[empty_range(2, "αβγ".len())]
6621 );
6622
6623 view.move_down(&MoveDown, cx);
6624 assert_eq!(
6625 view.selected_display_ranges(cx),
6626 &[empty_range(3, "abcd".len())]
6627 );
6628
6629 view.move_down(&MoveDown, cx);
6630 assert_eq!(
6631 view.selected_display_ranges(cx),
6632 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6633 );
6634
6635 view.move_up(&MoveUp, cx);
6636 assert_eq!(
6637 view.selected_display_ranges(cx),
6638 &[empty_range(3, "abcd".len())]
6639 );
6640
6641 view.move_up(&MoveUp, cx);
6642 assert_eq!(
6643 view.selected_display_ranges(cx),
6644 &[empty_range(2, "αβγ".len())]
6645 );
6646 });
6647 }
6648
6649 #[gpui::test]
6650 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6651 populate_settings(cx);
6652 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6653 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6654 view.update(cx, |view, cx| {
6655 view.select_display_ranges(
6656 &[
6657 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6658 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6659 ],
6660 cx,
6661 );
6662 });
6663
6664 view.update(cx, |view, cx| {
6665 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6666 assert_eq!(
6667 view.selected_display_ranges(cx),
6668 &[
6669 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6670 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6671 ]
6672 );
6673 });
6674
6675 view.update(cx, |view, cx| {
6676 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6677 assert_eq!(
6678 view.selected_display_ranges(cx),
6679 &[
6680 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6681 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6682 ]
6683 );
6684 });
6685
6686 view.update(cx, |view, cx| {
6687 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6688 assert_eq!(
6689 view.selected_display_ranges(cx),
6690 &[
6691 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6692 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6693 ]
6694 );
6695 });
6696
6697 view.update(cx, |view, cx| {
6698 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6699 assert_eq!(
6700 view.selected_display_ranges(cx),
6701 &[
6702 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6703 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6704 ]
6705 );
6706 });
6707
6708 // Moving to the end of line again is a no-op.
6709 view.update(cx, |view, cx| {
6710 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6711 assert_eq!(
6712 view.selected_display_ranges(cx),
6713 &[
6714 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6715 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6716 ]
6717 );
6718 });
6719
6720 view.update(cx, |view, cx| {
6721 view.move_left(&MoveLeft, cx);
6722 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6723 assert_eq!(
6724 view.selected_display_ranges(cx),
6725 &[
6726 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6727 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6728 ]
6729 );
6730 });
6731
6732 view.update(cx, |view, cx| {
6733 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6734 assert_eq!(
6735 view.selected_display_ranges(cx),
6736 &[
6737 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6738 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6739 ]
6740 );
6741 });
6742
6743 view.update(cx, |view, cx| {
6744 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6745 assert_eq!(
6746 view.selected_display_ranges(cx),
6747 &[
6748 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6749 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6750 ]
6751 );
6752 });
6753
6754 view.update(cx, |view, cx| {
6755 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6756 assert_eq!(
6757 view.selected_display_ranges(cx),
6758 &[
6759 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6760 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6761 ]
6762 );
6763 });
6764
6765 view.update(cx, |view, cx| {
6766 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6767 assert_eq!(view.display_text(cx), "ab\n de");
6768 assert_eq!(
6769 view.selected_display_ranges(cx),
6770 &[
6771 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6772 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6773 ]
6774 );
6775 });
6776
6777 view.update(cx, |view, cx| {
6778 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6779 assert_eq!(view.display_text(cx), "\n");
6780 assert_eq!(
6781 view.selected_display_ranges(cx),
6782 &[
6783 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6784 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6785 ]
6786 );
6787 });
6788 }
6789
6790 #[gpui::test]
6791 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6792 populate_settings(cx);
6793 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6794 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6795 view.update(cx, |view, cx| {
6796 view.select_display_ranges(
6797 &[
6798 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6799 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6800 ],
6801 cx,
6802 );
6803 });
6804
6805 view.update(cx, |view, cx| {
6806 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6807 assert_eq!(
6808 view.selected_display_ranges(cx),
6809 &[
6810 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6811 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6812 ]
6813 );
6814 });
6815
6816 view.update(cx, |view, cx| {
6817 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6818 assert_eq!(
6819 view.selected_display_ranges(cx),
6820 &[
6821 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6822 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6823 ]
6824 );
6825 });
6826
6827 view.update(cx, |view, cx| {
6828 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6829 assert_eq!(
6830 view.selected_display_ranges(cx),
6831 &[
6832 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6833 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6834 ]
6835 );
6836 });
6837
6838 view.update(cx, |view, cx| {
6839 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[
6843 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6844 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6845 ]
6846 );
6847 });
6848
6849 view.update(cx, |view, cx| {
6850 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6851 assert_eq!(
6852 view.selected_display_ranges(cx),
6853 &[
6854 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6855 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6856 ]
6857 );
6858 });
6859
6860 view.update(cx, |view, cx| {
6861 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 &[
6865 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6866 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6867 ]
6868 );
6869 });
6870
6871 view.update(cx, |view, cx| {
6872 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6873 assert_eq!(
6874 view.selected_display_ranges(cx),
6875 &[
6876 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6877 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6878 ]
6879 );
6880 });
6881
6882 view.update(cx, |view, cx| {
6883 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6884 assert_eq!(
6885 view.selected_display_ranges(cx),
6886 &[
6887 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6888 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6889 ]
6890 );
6891 });
6892
6893 view.update(cx, |view, cx| {
6894 view.move_right(&MoveRight, cx);
6895 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6896 assert_eq!(
6897 view.selected_display_ranges(cx),
6898 &[
6899 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6900 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6901 ]
6902 );
6903 });
6904
6905 view.update(cx, |view, cx| {
6906 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6907 assert_eq!(
6908 view.selected_display_ranges(cx),
6909 &[
6910 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6911 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6912 ]
6913 );
6914 });
6915
6916 view.update(cx, |view, cx| {
6917 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6918 assert_eq!(
6919 view.selected_display_ranges(cx),
6920 &[
6921 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6922 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6923 ]
6924 );
6925 });
6926 }
6927
6928 #[gpui::test]
6929 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6930 populate_settings(cx);
6931 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6932 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6933
6934 view.update(cx, |view, cx| {
6935 view.set_wrap_width(Some(140.), cx);
6936 assert_eq!(
6937 view.display_text(cx),
6938 "use one::{\n two::three::\n four::five\n};"
6939 );
6940
6941 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6942
6943 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6944 assert_eq!(
6945 view.selected_display_ranges(cx),
6946 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6947 );
6948
6949 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6950 assert_eq!(
6951 view.selected_display_ranges(cx),
6952 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6953 );
6954
6955 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6956 assert_eq!(
6957 view.selected_display_ranges(cx),
6958 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6959 );
6960
6961 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6962 assert_eq!(
6963 view.selected_display_ranges(cx),
6964 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6965 );
6966
6967 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6968 assert_eq!(
6969 view.selected_display_ranges(cx),
6970 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6971 );
6972
6973 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6974 assert_eq!(
6975 view.selected_display_ranges(cx),
6976 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6977 );
6978 });
6979 }
6980
6981 #[gpui::test]
6982 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6983 populate_settings(cx);
6984 let buffer = MultiBuffer::build_simple("one two three four", cx);
6985 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6986
6987 view.update(cx, |view, cx| {
6988 view.select_display_ranges(
6989 &[
6990 // an empty selection - the preceding word fragment is deleted
6991 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6992 // characters selected - they are deleted
6993 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6994 ],
6995 cx,
6996 );
6997 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
6998 });
6999
7000 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7001
7002 view.update(cx, |view, cx| {
7003 view.select_display_ranges(
7004 &[
7005 // an empty selection - the following word fragment is deleted
7006 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7007 // characters selected - they are deleted
7008 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7009 ],
7010 cx,
7011 );
7012 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
7013 });
7014
7015 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7016 }
7017
7018 #[gpui::test]
7019 fn test_newline(cx: &mut gpui::MutableAppContext) {
7020 populate_settings(cx);
7021 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7022 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7023
7024 view.update(cx, |view, cx| {
7025 view.select_display_ranges(
7026 &[
7027 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7028 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7029 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7030 ],
7031 cx,
7032 );
7033
7034 view.newline(&Newline, cx);
7035 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7036 });
7037 }
7038
7039 #[gpui::test]
7040 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7041 populate_settings(cx);
7042 let buffer = MultiBuffer::build_simple(
7043 "
7044 a
7045 b(
7046 X
7047 )
7048 c(
7049 X
7050 )
7051 "
7052 .unindent()
7053 .as_str(),
7054 cx,
7055 );
7056
7057 let (_, editor) = cx.add_window(Default::default(), |cx| {
7058 let mut editor = build_editor(buffer.clone(), cx);
7059 editor.select_ranges(
7060 [
7061 Point::new(2, 4)..Point::new(2, 5),
7062 Point::new(5, 4)..Point::new(5, 5),
7063 ],
7064 None,
7065 cx,
7066 );
7067 editor
7068 });
7069
7070 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7071 buffer.update(cx, |buffer, cx| {
7072 buffer.edit(
7073 [
7074 Point::new(1, 2)..Point::new(3, 0),
7075 Point::new(4, 2)..Point::new(6, 0),
7076 ],
7077 "",
7078 cx,
7079 );
7080 assert_eq!(
7081 buffer.read(cx).text(),
7082 "
7083 a
7084 b()
7085 c()
7086 "
7087 .unindent()
7088 );
7089 });
7090
7091 editor.update(cx, |editor, cx| {
7092 assert_eq!(
7093 editor.selected_ranges(cx),
7094 &[
7095 Point::new(1, 2)..Point::new(1, 2),
7096 Point::new(2, 2)..Point::new(2, 2),
7097 ],
7098 );
7099
7100 editor.newline(&Newline, cx);
7101 assert_eq!(
7102 editor.text(cx),
7103 "
7104 a
7105 b(
7106 )
7107 c(
7108 )
7109 "
7110 .unindent()
7111 );
7112
7113 // The selections are moved after the inserted newlines
7114 assert_eq!(
7115 editor.selected_ranges(cx),
7116 &[
7117 Point::new(2, 0)..Point::new(2, 0),
7118 Point::new(4, 0)..Point::new(4, 0),
7119 ],
7120 );
7121 });
7122 }
7123
7124 #[gpui::test]
7125 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7126 populate_settings(cx);
7127 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7128 let (_, editor) = cx.add_window(Default::default(), |cx| {
7129 let mut editor = build_editor(buffer.clone(), cx);
7130 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7131 editor
7132 });
7133
7134 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7135 buffer.update(cx, |buffer, cx| {
7136 buffer.edit([2..5, 10..13, 18..21], "", cx);
7137 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7138 });
7139
7140 editor.update(cx, |editor, cx| {
7141 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7142
7143 editor.insert("Z", cx);
7144 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7145
7146 // The selections are moved after the inserted characters
7147 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7148 });
7149 }
7150
7151 #[gpui::test]
7152 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7153 populate_settings(cx);
7154 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7155 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7156
7157 view.update(cx, |view, cx| {
7158 // two selections on the same line
7159 view.select_display_ranges(
7160 &[
7161 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7162 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7163 ],
7164 cx,
7165 );
7166
7167 // indent from mid-tabstop to full tabstop
7168 view.tab(&Tab, cx);
7169 assert_eq!(view.text(cx), " one two\nthree\n four");
7170 assert_eq!(
7171 view.selected_display_ranges(cx),
7172 &[
7173 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7174 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7175 ]
7176 );
7177
7178 // outdent from 1 tabstop to 0 tabstops
7179 view.outdent(&Outdent, cx);
7180 assert_eq!(view.text(cx), "one two\nthree\n four");
7181 assert_eq!(
7182 view.selected_display_ranges(cx),
7183 &[
7184 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7185 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7186 ]
7187 );
7188
7189 // select across line ending
7190 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7191
7192 // indent and outdent affect only the preceding line
7193 view.tab(&Tab, cx);
7194 assert_eq!(view.text(cx), "one two\n three\n four");
7195 assert_eq!(
7196 view.selected_display_ranges(cx),
7197 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7198 );
7199 view.outdent(&Outdent, cx);
7200 assert_eq!(view.text(cx), "one two\nthree\n four");
7201 assert_eq!(
7202 view.selected_display_ranges(cx),
7203 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7204 );
7205
7206 // Ensure that indenting/outdenting works when the cursor is at column 0.
7207 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7208 view.tab(&Tab, cx);
7209 assert_eq!(view.text(cx), "one two\n three\n four");
7210 assert_eq!(
7211 view.selected_display_ranges(cx),
7212 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7213 );
7214
7215 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7216 view.outdent(&Outdent, cx);
7217 assert_eq!(view.text(cx), "one two\nthree\n four");
7218 assert_eq!(
7219 view.selected_display_ranges(cx),
7220 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7221 );
7222 });
7223 }
7224
7225 #[gpui::test]
7226 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7227 populate_settings(cx);
7228 let (_, view) = cx.add_window(Default::default(), |cx| {
7229 build_editor(MultiBuffer::build_simple("", cx), cx)
7230 });
7231
7232 view.update(cx, |view, cx| {
7233 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7234 view.select_display_ranges(
7235 &[
7236 // an empty selection - the preceding character is deleted
7237 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7238 // one character selected - it is deleted
7239 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7240 // a line suffix selected - it is deleted
7241 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7242 ],
7243 cx,
7244 );
7245 view.backspace(&Backspace, cx);
7246 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7247
7248 view.set_text(" one\n two\n three\n four", cx);
7249 view.select_display_ranges(
7250 &[
7251 // cursors at the the end of leading indent - last indent is deleted
7252 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7253 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7254 // cursors inside leading indent - overlapping indent deletions are coalesced
7255 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7256 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7257 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7258 // cursor at the beginning of a line - preceding newline is deleted
7259 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7260 // selection inside leading indent - only the selected character is deleted
7261 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7262 ],
7263 cx,
7264 );
7265 view.backspace(&Backspace, cx);
7266 assert_eq!(view.text(cx), "one\n two\n three four");
7267 });
7268 }
7269
7270 #[gpui::test]
7271 fn test_delete(cx: &mut gpui::MutableAppContext) {
7272 populate_settings(cx);
7273 let buffer =
7274 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7275 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7276
7277 view.update(cx, |view, cx| {
7278 view.select_display_ranges(
7279 &[
7280 // an empty selection - the following character is deleted
7281 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7282 // one character selected - it is deleted
7283 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7284 // a line suffix selected - it is deleted
7285 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7286 ],
7287 cx,
7288 );
7289 view.delete(&Delete, cx);
7290 });
7291
7292 assert_eq!(
7293 buffer.read(cx).read(cx).text(),
7294 "on two three\nfou five six\nseven ten\n"
7295 );
7296 }
7297
7298 #[gpui::test]
7299 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7300 populate_settings(cx);
7301 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7302 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7303 view.update(cx, |view, cx| {
7304 view.select_display_ranges(
7305 &[
7306 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7307 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7308 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7309 ],
7310 cx,
7311 );
7312 view.delete_line(&DeleteLine, cx);
7313 assert_eq!(view.display_text(cx), "ghi");
7314 assert_eq!(
7315 view.selected_display_ranges(cx),
7316 vec![
7317 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7318 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7319 ]
7320 );
7321 });
7322
7323 populate_settings(cx);
7324 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7325 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7326 view.update(cx, |view, cx| {
7327 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7328 view.delete_line(&DeleteLine, cx);
7329 assert_eq!(view.display_text(cx), "ghi\n");
7330 assert_eq!(
7331 view.selected_display_ranges(cx),
7332 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7333 );
7334 });
7335 }
7336
7337 #[gpui::test]
7338 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7339 populate_settings(cx);
7340 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7341 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7342 view.update(cx, |view, cx| {
7343 view.select_display_ranges(
7344 &[
7345 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7346 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7347 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7348 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7349 ],
7350 cx,
7351 );
7352 view.duplicate_line(&DuplicateLine, cx);
7353 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7354 assert_eq!(
7355 view.selected_display_ranges(cx),
7356 vec![
7357 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7358 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7359 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7360 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7361 ]
7362 );
7363 });
7364
7365 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7366 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7367 view.update(cx, |view, cx| {
7368 view.select_display_ranges(
7369 &[
7370 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7371 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7372 ],
7373 cx,
7374 );
7375 view.duplicate_line(&DuplicateLine, cx);
7376 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7377 assert_eq!(
7378 view.selected_display_ranges(cx),
7379 vec![
7380 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7381 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7382 ]
7383 );
7384 });
7385 }
7386
7387 #[gpui::test]
7388 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7389 populate_settings(cx);
7390 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7391 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7392 view.update(cx, |view, cx| {
7393 view.fold_ranges(
7394 vec![
7395 Point::new(0, 2)..Point::new(1, 2),
7396 Point::new(2, 3)..Point::new(4, 1),
7397 Point::new(7, 0)..Point::new(8, 4),
7398 ],
7399 cx,
7400 );
7401 view.select_display_ranges(
7402 &[
7403 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7404 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7405 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7406 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7407 ],
7408 cx,
7409 );
7410 assert_eq!(
7411 view.display_text(cx),
7412 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7413 );
7414
7415 view.move_line_up(&MoveLineUp, cx);
7416 assert_eq!(
7417 view.display_text(cx),
7418 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7419 );
7420 assert_eq!(
7421 view.selected_display_ranges(cx),
7422 vec![
7423 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7424 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7425 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7426 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7427 ]
7428 );
7429 });
7430
7431 view.update(cx, |view, cx| {
7432 view.move_line_down(&MoveLineDown, cx);
7433 assert_eq!(
7434 view.display_text(cx),
7435 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7436 );
7437 assert_eq!(
7438 view.selected_display_ranges(cx),
7439 vec![
7440 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7441 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7442 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7443 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7444 ]
7445 );
7446 });
7447
7448 view.update(cx, |view, cx| {
7449 view.move_line_down(&MoveLineDown, cx);
7450 assert_eq!(
7451 view.display_text(cx),
7452 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7453 );
7454 assert_eq!(
7455 view.selected_display_ranges(cx),
7456 vec![
7457 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7458 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7459 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7460 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7461 ]
7462 );
7463 });
7464
7465 view.update(cx, |view, cx| {
7466 view.move_line_up(&MoveLineUp, cx);
7467 assert_eq!(
7468 view.display_text(cx),
7469 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7470 );
7471 assert_eq!(
7472 view.selected_display_ranges(cx),
7473 vec![
7474 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7475 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7476 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7477 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7478 ]
7479 );
7480 });
7481 }
7482
7483 #[gpui::test]
7484 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7485 populate_settings(cx);
7486 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7487 let snapshot = buffer.read(cx).snapshot(cx);
7488 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7489 editor.update(cx, |editor, cx| {
7490 editor.insert_blocks(
7491 [BlockProperties {
7492 position: snapshot.anchor_after(Point::new(2, 0)),
7493 disposition: BlockDisposition::Below,
7494 height: 1,
7495 render: Arc::new(|_| Empty::new().boxed()),
7496 }],
7497 cx,
7498 );
7499 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7500 editor.move_line_down(&MoveLineDown, cx);
7501 });
7502 }
7503
7504 #[gpui::test]
7505 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7506 populate_settings(cx);
7507 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7508 let view = cx
7509 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7510 .1;
7511
7512 // Cut with three selections. Clipboard text is divided into three slices.
7513 view.update(cx, |view, cx| {
7514 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7515 view.cut(&Cut, cx);
7516 assert_eq!(view.display_text(cx), "two four six ");
7517 });
7518
7519 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7520 view.update(cx, |view, cx| {
7521 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7522 view.paste(&Paste, cx);
7523 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7524 assert_eq!(
7525 view.selected_display_ranges(cx),
7526 &[
7527 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7528 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7529 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7530 ]
7531 );
7532 });
7533
7534 // Paste again but with only two cursors. Since the number of cursors doesn't
7535 // match the number of slices in the clipboard, the entire clipboard text
7536 // is pasted at each cursor.
7537 view.update(cx, |view, cx| {
7538 view.select_ranges(vec![0..0, 31..31], None, cx);
7539 view.handle_input(&Input("( ".into()), cx);
7540 view.paste(&Paste, cx);
7541 view.handle_input(&Input(") ".into()), cx);
7542 assert_eq!(
7543 view.display_text(cx),
7544 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7545 );
7546 });
7547
7548 view.update(cx, |view, cx| {
7549 view.select_ranges(vec![0..0], None, cx);
7550 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7551 assert_eq!(
7552 view.display_text(cx),
7553 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7554 );
7555 });
7556
7557 // Cut with three selections, one of which is full-line.
7558 view.update(cx, |view, cx| {
7559 view.select_display_ranges(
7560 &[
7561 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7562 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7563 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7564 ],
7565 cx,
7566 );
7567 view.cut(&Cut, cx);
7568 assert_eq!(
7569 view.display_text(cx),
7570 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7571 );
7572 });
7573
7574 // Paste with three selections, noticing how the copied selection that was full-line
7575 // gets inserted before the second cursor.
7576 view.update(cx, |view, cx| {
7577 view.select_display_ranges(
7578 &[
7579 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7580 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7581 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7582 ],
7583 cx,
7584 );
7585 view.paste(&Paste, cx);
7586 assert_eq!(
7587 view.display_text(cx),
7588 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7589 );
7590 assert_eq!(
7591 view.selected_display_ranges(cx),
7592 &[
7593 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7594 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7595 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7596 ]
7597 );
7598 });
7599
7600 // Copy with a single cursor only, which writes the whole line into the clipboard.
7601 view.update(cx, |view, cx| {
7602 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7603 view.copy(&Copy, cx);
7604 });
7605
7606 // Paste with three selections, noticing how the copied full-line selection is inserted
7607 // before the empty selections but replaces the selection that is non-empty.
7608 view.update(cx, |view, cx| {
7609 view.select_display_ranges(
7610 &[
7611 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7612 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7613 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7614 ],
7615 cx,
7616 );
7617 view.paste(&Paste, cx);
7618 assert_eq!(
7619 view.display_text(cx),
7620 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7621 );
7622 assert_eq!(
7623 view.selected_display_ranges(cx),
7624 &[
7625 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7626 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7627 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7628 ]
7629 );
7630 });
7631 }
7632
7633 #[gpui::test]
7634 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7635 populate_settings(cx);
7636 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7637 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7638 view.update(cx, |view, cx| {
7639 view.select_all(&SelectAll, cx);
7640 assert_eq!(
7641 view.selected_display_ranges(cx),
7642 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7643 );
7644 });
7645 }
7646
7647 #[gpui::test]
7648 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7649 populate_settings(cx);
7650 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7651 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7652 view.update(cx, |view, cx| {
7653 view.select_display_ranges(
7654 &[
7655 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7656 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7657 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7658 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7659 ],
7660 cx,
7661 );
7662 view.select_line(&SelectLine, cx);
7663 assert_eq!(
7664 view.selected_display_ranges(cx),
7665 vec![
7666 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7667 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7668 ]
7669 );
7670 });
7671
7672 view.update(cx, |view, cx| {
7673 view.select_line(&SelectLine, cx);
7674 assert_eq!(
7675 view.selected_display_ranges(cx),
7676 vec![
7677 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7678 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7679 ]
7680 );
7681 });
7682
7683 view.update(cx, |view, cx| {
7684 view.select_line(&SelectLine, cx);
7685 assert_eq!(
7686 view.selected_display_ranges(cx),
7687 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7688 );
7689 });
7690 }
7691
7692 #[gpui::test]
7693 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7694 populate_settings(cx);
7695 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7696 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7697 view.update(cx, |view, cx| {
7698 view.fold_ranges(
7699 vec![
7700 Point::new(0, 2)..Point::new(1, 2),
7701 Point::new(2, 3)..Point::new(4, 1),
7702 Point::new(7, 0)..Point::new(8, 4),
7703 ],
7704 cx,
7705 );
7706 view.select_display_ranges(
7707 &[
7708 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7709 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7710 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7711 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7712 ],
7713 cx,
7714 );
7715 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7716 });
7717
7718 view.update(cx, |view, cx| {
7719 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7720 assert_eq!(
7721 view.display_text(cx),
7722 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7723 );
7724 assert_eq!(
7725 view.selected_display_ranges(cx),
7726 [
7727 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7728 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7729 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7730 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7731 ]
7732 );
7733 });
7734
7735 view.update(cx, |view, cx| {
7736 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7737 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7738 assert_eq!(
7739 view.display_text(cx),
7740 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7741 );
7742 assert_eq!(
7743 view.selected_display_ranges(cx),
7744 [
7745 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7746 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7747 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7748 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7749 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7750 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7751 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7752 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7753 ]
7754 );
7755 });
7756 }
7757
7758 #[gpui::test]
7759 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7760 populate_settings(cx);
7761 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7762 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7763
7764 view.update(cx, |view, cx| {
7765 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7766 });
7767 view.update(cx, |view, cx| {
7768 view.add_selection_above(&AddSelectionAbove, cx);
7769 assert_eq!(
7770 view.selected_display_ranges(cx),
7771 vec![
7772 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7773 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7774 ]
7775 );
7776 });
7777
7778 view.update(cx, |view, cx| {
7779 view.add_selection_above(&AddSelectionAbove, cx);
7780 assert_eq!(
7781 view.selected_display_ranges(cx),
7782 vec![
7783 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7784 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7785 ]
7786 );
7787 });
7788
7789 view.update(cx, |view, cx| {
7790 view.add_selection_below(&AddSelectionBelow, cx);
7791 assert_eq!(
7792 view.selected_display_ranges(cx),
7793 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7794 );
7795 });
7796
7797 view.update(cx, |view, cx| {
7798 view.add_selection_below(&AddSelectionBelow, cx);
7799 assert_eq!(
7800 view.selected_display_ranges(cx),
7801 vec![
7802 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7803 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7804 ]
7805 );
7806 });
7807
7808 view.update(cx, |view, cx| {
7809 view.add_selection_below(&AddSelectionBelow, cx);
7810 assert_eq!(
7811 view.selected_display_ranges(cx),
7812 vec![
7813 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7814 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7815 ]
7816 );
7817 });
7818
7819 view.update(cx, |view, cx| {
7820 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7821 });
7822 view.update(cx, |view, cx| {
7823 view.add_selection_below(&AddSelectionBelow, cx);
7824 assert_eq!(
7825 view.selected_display_ranges(cx),
7826 vec![
7827 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7828 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7829 ]
7830 );
7831 });
7832
7833 view.update(cx, |view, cx| {
7834 view.add_selection_below(&AddSelectionBelow, cx);
7835 assert_eq!(
7836 view.selected_display_ranges(cx),
7837 vec![
7838 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7839 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7840 ]
7841 );
7842 });
7843
7844 view.update(cx, |view, cx| {
7845 view.add_selection_above(&AddSelectionAbove, cx);
7846 assert_eq!(
7847 view.selected_display_ranges(cx),
7848 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7849 );
7850 });
7851
7852 view.update(cx, |view, cx| {
7853 view.add_selection_above(&AddSelectionAbove, cx);
7854 assert_eq!(
7855 view.selected_display_ranges(cx),
7856 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7857 );
7858 });
7859
7860 view.update(cx, |view, cx| {
7861 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7862 view.add_selection_below(&AddSelectionBelow, cx);
7863 assert_eq!(
7864 view.selected_display_ranges(cx),
7865 vec![
7866 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7867 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7868 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7869 ]
7870 );
7871 });
7872
7873 view.update(cx, |view, cx| {
7874 view.add_selection_below(&AddSelectionBelow, cx);
7875 assert_eq!(
7876 view.selected_display_ranges(cx),
7877 vec![
7878 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7879 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7880 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7881 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7882 ]
7883 );
7884 });
7885
7886 view.update(cx, |view, cx| {
7887 view.add_selection_above(&AddSelectionAbove, cx);
7888 assert_eq!(
7889 view.selected_display_ranges(cx),
7890 vec![
7891 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7892 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7893 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7894 ]
7895 );
7896 });
7897
7898 view.update(cx, |view, cx| {
7899 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7900 });
7901 view.update(cx, |view, cx| {
7902 view.add_selection_above(&AddSelectionAbove, cx);
7903 assert_eq!(
7904 view.selected_display_ranges(cx),
7905 vec![
7906 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7907 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7908 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7909 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7910 ]
7911 );
7912 });
7913
7914 view.update(cx, |view, cx| {
7915 view.add_selection_below(&AddSelectionBelow, cx);
7916 assert_eq!(
7917 view.selected_display_ranges(cx),
7918 vec![
7919 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7920 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7921 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7922 ]
7923 );
7924 });
7925 }
7926
7927 #[gpui::test]
7928 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7929 cx.update(populate_settings);
7930 let language = Arc::new(Language::new(
7931 LanguageConfig::default(),
7932 Some(tree_sitter_rust::language()),
7933 ));
7934
7935 let text = r#"
7936 use mod1::mod2::{mod3, mod4};
7937
7938 fn fn_1(param1: bool, param2: &str) {
7939 let var1 = "text";
7940 }
7941 "#
7942 .unindent();
7943
7944 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7945 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7946 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7947 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7948 .await;
7949
7950 view.update(cx, |view, cx| {
7951 view.select_display_ranges(
7952 &[
7953 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7954 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7955 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7956 ],
7957 cx,
7958 );
7959 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7960 });
7961 assert_eq!(
7962 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7963 &[
7964 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7965 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7966 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7967 ]
7968 );
7969
7970 view.update(cx, |view, cx| {
7971 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7972 });
7973 assert_eq!(
7974 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7975 &[
7976 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7977 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7978 ]
7979 );
7980
7981 view.update(cx, |view, cx| {
7982 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7983 });
7984 assert_eq!(
7985 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7986 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7987 );
7988
7989 // Trying to expand the selected syntax node one more time has no effect.
7990 view.update(cx, |view, cx| {
7991 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7992 });
7993 assert_eq!(
7994 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7995 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7996 );
7997
7998 view.update(cx, |view, cx| {
7999 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8000 });
8001 assert_eq!(
8002 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8003 &[
8004 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8005 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8006 ]
8007 );
8008
8009 view.update(cx, |view, cx| {
8010 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8011 });
8012 assert_eq!(
8013 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8014 &[
8015 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8016 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8017 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8018 ]
8019 );
8020
8021 view.update(cx, |view, cx| {
8022 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8023 });
8024 assert_eq!(
8025 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8026 &[
8027 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8028 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8029 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8030 ]
8031 );
8032
8033 // Trying to shrink the selected syntax node one more time has no effect.
8034 view.update(cx, |view, cx| {
8035 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8036 });
8037 assert_eq!(
8038 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8039 &[
8040 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8041 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8042 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8043 ]
8044 );
8045
8046 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8047 // a fold.
8048 view.update(cx, |view, cx| {
8049 view.fold_ranges(
8050 vec![
8051 Point::new(0, 21)..Point::new(0, 24),
8052 Point::new(3, 20)..Point::new(3, 22),
8053 ],
8054 cx,
8055 );
8056 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8057 });
8058 assert_eq!(
8059 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8060 &[
8061 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8062 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8063 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8064 ]
8065 );
8066 }
8067
8068 #[gpui::test]
8069 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8070 cx.update(populate_settings);
8071 let language = Arc::new(
8072 Language::new(
8073 LanguageConfig {
8074 brackets: vec![
8075 BracketPair {
8076 start: "{".to_string(),
8077 end: "}".to_string(),
8078 close: false,
8079 newline: true,
8080 },
8081 BracketPair {
8082 start: "(".to_string(),
8083 end: ")".to_string(),
8084 close: false,
8085 newline: true,
8086 },
8087 ],
8088 ..Default::default()
8089 },
8090 Some(tree_sitter_rust::language()),
8091 )
8092 .with_indents_query(
8093 r#"
8094 (_ "(" ")" @end) @indent
8095 (_ "{" "}" @end) @indent
8096 "#,
8097 )
8098 .unwrap(),
8099 );
8100
8101 let text = "fn a() {}";
8102
8103 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8104 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8105 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8106 editor
8107 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8108 .await;
8109
8110 editor.update(cx, |editor, cx| {
8111 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8112 editor.newline(&Newline, cx);
8113 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8114 assert_eq!(
8115 editor.selected_ranges(cx),
8116 &[
8117 Point::new(1, 4)..Point::new(1, 4),
8118 Point::new(3, 4)..Point::new(3, 4),
8119 Point::new(5, 0)..Point::new(5, 0)
8120 ]
8121 );
8122 });
8123 }
8124
8125 #[gpui::test]
8126 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8127 cx.update(populate_settings);
8128 let language = Arc::new(Language::new(
8129 LanguageConfig {
8130 brackets: vec![
8131 BracketPair {
8132 start: "{".to_string(),
8133 end: "}".to_string(),
8134 close: true,
8135 newline: true,
8136 },
8137 BracketPair {
8138 start: "/*".to_string(),
8139 end: " */".to_string(),
8140 close: true,
8141 newline: true,
8142 },
8143 ],
8144 autoclose_before: "})]".to_string(),
8145 ..Default::default()
8146 },
8147 Some(tree_sitter_rust::language()),
8148 ));
8149
8150 let text = r#"
8151 a
8152
8153 /
8154
8155 "#
8156 .unindent();
8157
8158 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8159 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8160 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8161 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8162 .await;
8163
8164 view.update(cx, |view, cx| {
8165 view.select_display_ranges(
8166 &[
8167 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8168 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8169 ],
8170 cx,
8171 );
8172
8173 view.handle_input(&Input("{".to_string()), cx);
8174 view.handle_input(&Input("{".to_string()), cx);
8175 view.handle_input(&Input("{".to_string()), cx);
8176 assert_eq!(
8177 view.text(cx),
8178 "
8179 {{{}}}
8180 {{{}}}
8181 /
8182
8183 "
8184 .unindent()
8185 );
8186
8187 view.move_right(&MoveRight, cx);
8188 view.handle_input(&Input("}".to_string()), cx);
8189 view.handle_input(&Input("}".to_string()), cx);
8190 view.handle_input(&Input("}".to_string()), cx);
8191 assert_eq!(
8192 view.text(cx),
8193 "
8194 {{{}}}}
8195 {{{}}}}
8196 /
8197
8198 "
8199 .unindent()
8200 );
8201
8202 view.undo(&Undo, cx);
8203 view.handle_input(&Input("/".to_string()), cx);
8204 view.handle_input(&Input("*".to_string()), cx);
8205 assert_eq!(
8206 view.text(cx),
8207 "
8208 /* */
8209 /* */
8210 /
8211
8212 "
8213 .unindent()
8214 );
8215
8216 view.undo(&Undo, cx);
8217 view.select_display_ranges(
8218 &[
8219 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8220 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8221 ],
8222 cx,
8223 );
8224 view.handle_input(&Input("*".to_string()), cx);
8225 assert_eq!(
8226 view.text(cx),
8227 "
8228 a
8229
8230 /*
8231 *
8232 "
8233 .unindent()
8234 );
8235
8236 // Don't autoclose if the next character isn't whitespace and isn't
8237 // listed in the language's "autoclose_before" section.
8238 view.finalize_last_transaction(cx);
8239 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8240 view.handle_input(&Input("{".to_string()), cx);
8241 assert_eq!(
8242 view.text(cx),
8243 "
8244 {a
8245
8246 /*
8247 *
8248 "
8249 .unindent()
8250 );
8251
8252 view.undo(&Undo, cx);
8253 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8254 view.handle_input(&Input("{".to_string()), cx);
8255 assert_eq!(
8256 view.text(cx),
8257 "
8258 {a}
8259
8260 /*
8261 *
8262 "
8263 .unindent()
8264 );
8265 assert_eq!(
8266 view.selected_display_ranges(cx),
8267 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8268 );
8269 });
8270 }
8271
8272 #[gpui::test]
8273 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8274 cx.update(populate_settings);
8275
8276 let text = "
8277 a. b
8278 a. b
8279 a. b
8280 "
8281 .unindent();
8282 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8283 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8284
8285 editor.update(cx, |editor, cx| {
8286 let buffer = &editor.snapshot(cx).buffer_snapshot;
8287 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8288 let insertion_ranges = [
8289 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8290 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8291 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8292 ];
8293
8294 editor
8295 .insert_snippet(&insertion_ranges, snippet, cx)
8296 .unwrap();
8297 assert_eq!(
8298 editor.text(cx),
8299 "
8300 a.f(one, two, three) b
8301 a.f(one, two, three) b
8302 a.f(one, two, three) b
8303 "
8304 .unindent()
8305 );
8306 assert_eq!(
8307 editor.selected_ranges::<Point>(cx),
8308 &[
8309 Point::new(0, 4)..Point::new(0, 7),
8310 Point::new(0, 14)..Point::new(0, 19),
8311 Point::new(1, 4)..Point::new(1, 7),
8312 Point::new(1, 14)..Point::new(1, 19),
8313 Point::new(2, 4)..Point::new(2, 7),
8314 Point::new(2, 14)..Point::new(2, 19),
8315 ]
8316 );
8317
8318 // Can't move earlier than the first tab stop
8319 editor.move_to_prev_snippet_tabstop(cx);
8320 assert_eq!(
8321 editor.selected_ranges::<Point>(cx),
8322 &[
8323 Point::new(0, 4)..Point::new(0, 7),
8324 Point::new(0, 14)..Point::new(0, 19),
8325 Point::new(1, 4)..Point::new(1, 7),
8326 Point::new(1, 14)..Point::new(1, 19),
8327 Point::new(2, 4)..Point::new(2, 7),
8328 Point::new(2, 14)..Point::new(2, 19),
8329 ]
8330 );
8331
8332 assert!(editor.move_to_next_snippet_tabstop(cx));
8333 assert_eq!(
8334 editor.selected_ranges::<Point>(cx),
8335 &[
8336 Point::new(0, 9)..Point::new(0, 12),
8337 Point::new(1, 9)..Point::new(1, 12),
8338 Point::new(2, 9)..Point::new(2, 12)
8339 ]
8340 );
8341
8342 editor.move_to_prev_snippet_tabstop(cx);
8343 assert_eq!(
8344 editor.selected_ranges::<Point>(cx),
8345 &[
8346 Point::new(0, 4)..Point::new(0, 7),
8347 Point::new(0, 14)..Point::new(0, 19),
8348 Point::new(1, 4)..Point::new(1, 7),
8349 Point::new(1, 14)..Point::new(1, 19),
8350 Point::new(2, 4)..Point::new(2, 7),
8351 Point::new(2, 14)..Point::new(2, 19),
8352 ]
8353 );
8354
8355 assert!(editor.move_to_next_snippet_tabstop(cx));
8356 assert!(editor.move_to_next_snippet_tabstop(cx));
8357 assert_eq!(
8358 editor.selected_ranges::<Point>(cx),
8359 &[
8360 Point::new(0, 20)..Point::new(0, 20),
8361 Point::new(1, 20)..Point::new(1, 20),
8362 Point::new(2, 20)..Point::new(2, 20)
8363 ]
8364 );
8365
8366 // As soon as the last tab stop is reached, snippet state is gone
8367 editor.move_to_prev_snippet_tabstop(cx);
8368 assert_eq!(
8369 editor.selected_ranges::<Point>(cx),
8370 &[
8371 Point::new(0, 20)..Point::new(0, 20),
8372 Point::new(1, 20)..Point::new(1, 20),
8373 Point::new(2, 20)..Point::new(2, 20)
8374 ]
8375 );
8376 });
8377 }
8378
8379 #[gpui::test]
8380 async fn test_completion(cx: &mut gpui::TestAppContext) {
8381 cx.update(populate_settings);
8382
8383 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8384 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8385 completion_provider: Some(lsp::CompletionOptions {
8386 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8387 ..Default::default()
8388 }),
8389 ..Default::default()
8390 });
8391 let language = Arc::new(Language::new(
8392 LanguageConfig {
8393 name: "Rust".into(),
8394 path_suffixes: vec!["rs".to_string()],
8395 language_server: Some(language_server_config),
8396 ..Default::default()
8397 },
8398 Some(tree_sitter_rust::language()),
8399 ));
8400
8401 let text = "
8402 one
8403 two
8404 three
8405 "
8406 .unindent();
8407
8408 let fs = FakeFs::new(cx.background().clone());
8409 fs.insert_file("/file.rs", text).await;
8410
8411 let project = Project::test(fs, cx);
8412 project.update(cx, |project, _| project.languages().add(language));
8413
8414 let worktree_id = project
8415 .update(cx, |project, cx| {
8416 project.find_or_create_local_worktree("/file.rs", true, cx)
8417 })
8418 .await
8419 .unwrap()
8420 .0
8421 .read_with(cx, |tree, _| tree.id());
8422 let buffer = project
8423 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8424 .await
8425 .unwrap();
8426 let mut fake_server = fake_servers.next().await.unwrap();
8427
8428 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8429 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8430
8431 editor.update(cx, |editor, cx| {
8432 editor.project = Some(project);
8433 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8434 editor.handle_input(&Input(".".to_string()), cx);
8435 });
8436
8437 handle_completion_request(
8438 &mut fake_server,
8439 "/file.rs",
8440 Point::new(0, 4),
8441 vec![
8442 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8443 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8444 ],
8445 )
8446 .await;
8447 editor
8448 .condition(&cx, |editor, _| editor.context_menu_visible())
8449 .await;
8450
8451 let apply_additional_edits = editor.update(cx, |editor, cx| {
8452 editor.move_down(&MoveDown, cx);
8453 let apply_additional_edits = editor
8454 .confirm_completion(&ConfirmCompletion(None), cx)
8455 .unwrap();
8456 assert_eq!(
8457 editor.text(cx),
8458 "
8459 one.second_completion
8460 two
8461 three
8462 "
8463 .unindent()
8464 );
8465 apply_additional_edits
8466 });
8467
8468 handle_resolve_completion_request(
8469 &mut fake_server,
8470 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8471 )
8472 .await;
8473 apply_additional_edits.await.unwrap();
8474 assert_eq!(
8475 editor.read_with(cx, |editor, cx| editor.text(cx)),
8476 "
8477 one.second_completion
8478 two
8479 three
8480 additional edit
8481 "
8482 .unindent()
8483 );
8484
8485 editor.update(cx, |editor, cx| {
8486 editor.select_ranges(
8487 [
8488 Point::new(1, 3)..Point::new(1, 3),
8489 Point::new(2, 5)..Point::new(2, 5),
8490 ],
8491 None,
8492 cx,
8493 );
8494
8495 editor.handle_input(&Input(" ".to_string()), cx);
8496 assert!(editor.context_menu.is_none());
8497 editor.handle_input(&Input("s".to_string()), cx);
8498 assert!(editor.context_menu.is_none());
8499 });
8500
8501 handle_completion_request(
8502 &mut fake_server,
8503 "/file.rs",
8504 Point::new(2, 7),
8505 vec![
8506 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8507 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8508 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8509 ],
8510 )
8511 .await;
8512 editor
8513 .condition(&cx, |editor, _| editor.context_menu_visible())
8514 .await;
8515
8516 editor.update(cx, |editor, cx| {
8517 editor.handle_input(&Input("i".to_string()), cx);
8518 });
8519
8520 handle_completion_request(
8521 &mut fake_server,
8522 "/file.rs",
8523 Point::new(2, 8),
8524 vec![
8525 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8526 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8527 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8528 ],
8529 )
8530 .await;
8531 editor
8532 .condition(&cx, |editor, _| editor.context_menu_visible())
8533 .await;
8534
8535 let apply_additional_edits = editor.update(cx, |editor, cx| {
8536 let apply_additional_edits = editor
8537 .confirm_completion(&ConfirmCompletion(None), cx)
8538 .unwrap();
8539 assert_eq!(
8540 editor.text(cx),
8541 "
8542 one.second_completion
8543 two sixth_completion
8544 three sixth_completion
8545 additional edit
8546 "
8547 .unindent()
8548 );
8549 apply_additional_edits
8550 });
8551 handle_resolve_completion_request(&mut fake_server, None).await;
8552 apply_additional_edits.await.unwrap();
8553
8554 async fn handle_completion_request(
8555 fake: &mut FakeLanguageServer,
8556 path: &'static str,
8557 position: Point,
8558 completions: Vec<(Range<Point>, &'static str)>,
8559 ) {
8560 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8561 assert_eq!(
8562 params.text_document_position.text_document.uri,
8563 lsp::Url::from_file_path(path).unwrap()
8564 );
8565 assert_eq!(
8566 params.text_document_position.position,
8567 lsp::Position::new(position.row, position.column)
8568 );
8569 Some(lsp::CompletionResponse::Array(
8570 completions
8571 .iter()
8572 .map(|(range, new_text)| lsp::CompletionItem {
8573 label: new_text.to_string(),
8574 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8575 range: lsp::Range::new(
8576 lsp::Position::new(range.start.row, range.start.column),
8577 lsp::Position::new(range.start.row, range.start.column),
8578 ),
8579 new_text: new_text.to_string(),
8580 })),
8581 ..Default::default()
8582 })
8583 .collect(),
8584 ))
8585 })
8586 .next()
8587 .await;
8588 }
8589
8590 async fn handle_resolve_completion_request(
8591 fake: &mut FakeLanguageServer,
8592 edit: Option<(Range<Point>, &'static str)>,
8593 ) {
8594 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8595 lsp::CompletionItem {
8596 additional_text_edits: edit.clone().map(|(range, new_text)| {
8597 vec![lsp::TextEdit::new(
8598 lsp::Range::new(
8599 lsp::Position::new(range.start.row, range.start.column),
8600 lsp::Position::new(range.end.row, range.end.column),
8601 ),
8602 new_text.to_string(),
8603 )]
8604 }),
8605 ..Default::default()
8606 }
8607 })
8608 .next()
8609 .await;
8610 }
8611 }
8612
8613 #[gpui::test]
8614 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8615 cx.update(populate_settings);
8616 let language = Arc::new(Language::new(
8617 LanguageConfig {
8618 line_comment: Some("// ".to_string()),
8619 ..Default::default()
8620 },
8621 Some(tree_sitter_rust::language()),
8622 ));
8623
8624 let text = "
8625 fn a() {
8626 //b();
8627 // c();
8628 // d();
8629 }
8630 "
8631 .unindent();
8632
8633 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8634 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8635 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8636
8637 view.update(cx, |editor, cx| {
8638 // If multiple selections intersect a line, the line is only
8639 // toggled once.
8640 editor.select_display_ranges(
8641 &[
8642 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8643 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8644 ],
8645 cx,
8646 );
8647 editor.toggle_comments(&ToggleComments, cx);
8648 assert_eq!(
8649 editor.text(cx),
8650 "
8651 fn a() {
8652 b();
8653 c();
8654 d();
8655 }
8656 "
8657 .unindent()
8658 );
8659
8660 // The comment prefix is inserted at the same column for every line
8661 // in a selection.
8662 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8663 editor.toggle_comments(&ToggleComments, cx);
8664 assert_eq!(
8665 editor.text(cx),
8666 "
8667 fn a() {
8668 // b();
8669 // c();
8670 // d();
8671 }
8672 "
8673 .unindent()
8674 );
8675
8676 // If a selection ends at the beginning of a line, that line is not toggled.
8677 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8678 editor.toggle_comments(&ToggleComments, cx);
8679 assert_eq!(
8680 editor.text(cx),
8681 "
8682 fn a() {
8683 // b();
8684 c();
8685 // d();
8686 }
8687 "
8688 .unindent()
8689 );
8690 });
8691 }
8692
8693 #[gpui::test]
8694 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8695 populate_settings(cx);
8696 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8697 let multibuffer = cx.add_model(|cx| {
8698 let mut multibuffer = MultiBuffer::new(0);
8699 multibuffer.push_excerpts(
8700 buffer.clone(),
8701 [
8702 Point::new(0, 0)..Point::new(0, 4),
8703 Point::new(1, 0)..Point::new(1, 4),
8704 ],
8705 cx,
8706 );
8707 multibuffer
8708 });
8709
8710 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8711
8712 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8713 view.update(cx, |view, cx| {
8714 assert_eq!(view.text(cx), "aaaa\nbbbb");
8715 view.select_ranges(
8716 [
8717 Point::new(0, 0)..Point::new(0, 0),
8718 Point::new(1, 0)..Point::new(1, 0),
8719 ],
8720 None,
8721 cx,
8722 );
8723
8724 view.handle_input(&Input("X".to_string()), cx);
8725 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8726 assert_eq!(
8727 view.selected_ranges(cx),
8728 [
8729 Point::new(0, 1)..Point::new(0, 1),
8730 Point::new(1, 1)..Point::new(1, 1),
8731 ]
8732 )
8733 });
8734 }
8735
8736 #[gpui::test]
8737 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8738 populate_settings(cx);
8739 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8740 let multibuffer = cx.add_model(|cx| {
8741 let mut multibuffer = MultiBuffer::new(0);
8742 multibuffer.push_excerpts(
8743 buffer,
8744 [
8745 Point::new(0, 0)..Point::new(1, 4),
8746 Point::new(1, 0)..Point::new(2, 4),
8747 ],
8748 cx,
8749 );
8750 multibuffer
8751 });
8752
8753 assert_eq!(
8754 multibuffer.read(cx).read(cx).text(),
8755 "aaaa\nbbbb\nbbbb\ncccc"
8756 );
8757
8758 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8759 view.update(cx, |view, cx| {
8760 view.select_ranges(
8761 [
8762 Point::new(1, 1)..Point::new(1, 1),
8763 Point::new(2, 3)..Point::new(2, 3),
8764 ],
8765 None,
8766 cx,
8767 );
8768
8769 view.handle_input(&Input("X".to_string()), cx);
8770 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8771 assert_eq!(
8772 view.selected_ranges(cx),
8773 [
8774 Point::new(1, 2)..Point::new(1, 2),
8775 Point::new(2, 5)..Point::new(2, 5),
8776 ]
8777 );
8778
8779 view.newline(&Newline, cx);
8780 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8781 assert_eq!(
8782 view.selected_ranges(cx),
8783 [
8784 Point::new(2, 0)..Point::new(2, 0),
8785 Point::new(6, 0)..Point::new(6, 0),
8786 ]
8787 );
8788 });
8789 }
8790
8791 #[gpui::test]
8792 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8793 populate_settings(cx);
8794 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8795 let mut excerpt1_id = None;
8796 let multibuffer = cx.add_model(|cx| {
8797 let mut multibuffer = MultiBuffer::new(0);
8798 excerpt1_id = multibuffer
8799 .push_excerpts(
8800 buffer.clone(),
8801 [
8802 Point::new(0, 0)..Point::new(1, 4),
8803 Point::new(1, 0)..Point::new(2, 4),
8804 ],
8805 cx,
8806 )
8807 .into_iter()
8808 .next();
8809 multibuffer
8810 });
8811 assert_eq!(
8812 multibuffer.read(cx).read(cx).text(),
8813 "aaaa\nbbbb\nbbbb\ncccc"
8814 );
8815 let (_, editor) = cx.add_window(Default::default(), |cx| {
8816 let mut editor = build_editor(multibuffer.clone(), cx);
8817 editor.select_ranges(
8818 [
8819 Point::new(1, 3)..Point::new(1, 3),
8820 Point::new(2, 1)..Point::new(2, 1),
8821 ],
8822 None,
8823 cx,
8824 );
8825 editor
8826 });
8827
8828 // Refreshing selections is a no-op when excerpts haven't changed.
8829 editor.update(cx, |editor, cx| {
8830 editor.refresh_selections(cx);
8831 assert_eq!(
8832 editor.selected_ranges(cx),
8833 [
8834 Point::new(1, 3)..Point::new(1, 3),
8835 Point::new(2, 1)..Point::new(2, 1),
8836 ]
8837 );
8838 });
8839
8840 multibuffer.update(cx, |multibuffer, cx| {
8841 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8842 });
8843 editor.update(cx, |editor, cx| {
8844 // Removing an excerpt causes the first selection to become degenerate.
8845 assert_eq!(
8846 editor.selected_ranges(cx),
8847 [
8848 Point::new(0, 0)..Point::new(0, 0),
8849 Point::new(0, 1)..Point::new(0, 1)
8850 ]
8851 );
8852
8853 // Refreshing selections will relocate the first selection to the original buffer
8854 // location.
8855 editor.refresh_selections(cx);
8856 assert_eq!(
8857 editor.selected_ranges(cx),
8858 [
8859 Point::new(0, 1)..Point::new(0, 1),
8860 Point::new(0, 3)..Point::new(0, 3)
8861 ]
8862 );
8863 });
8864 }
8865
8866 #[gpui::test]
8867 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8868 cx.update(populate_settings);
8869 let language = Arc::new(Language::new(
8870 LanguageConfig {
8871 brackets: vec![
8872 BracketPair {
8873 start: "{".to_string(),
8874 end: "}".to_string(),
8875 close: true,
8876 newline: true,
8877 },
8878 BracketPair {
8879 start: "/* ".to_string(),
8880 end: " */".to_string(),
8881 close: true,
8882 newline: true,
8883 },
8884 ],
8885 ..Default::default()
8886 },
8887 Some(tree_sitter_rust::language()),
8888 ));
8889
8890 let text = concat!(
8891 "{ }\n", // Suppress rustfmt
8892 " x\n", //
8893 " /* */\n", //
8894 "x\n", //
8895 "{{} }\n", //
8896 );
8897
8898 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8899 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8900 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8901 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8902 .await;
8903
8904 view.update(cx, |view, cx| {
8905 view.select_display_ranges(
8906 &[
8907 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8908 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8909 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8910 ],
8911 cx,
8912 );
8913 view.newline(&Newline, cx);
8914
8915 assert_eq!(
8916 view.buffer().read(cx).read(cx).text(),
8917 concat!(
8918 "{ \n", // Suppress rustfmt
8919 "\n", //
8920 "}\n", //
8921 " x\n", //
8922 " /* \n", //
8923 " \n", //
8924 " */\n", //
8925 "x\n", //
8926 "{{} \n", //
8927 "}\n", //
8928 )
8929 );
8930 });
8931 }
8932
8933 #[gpui::test]
8934 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8935 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8936 populate_settings(cx);
8937 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
8938
8939 editor.update(cx, |editor, cx| {
8940 struct Type1;
8941 struct Type2;
8942
8943 let buffer = buffer.read(cx).snapshot(cx);
8944
8945 let anchor_range = |range: Range<Point>| {
8946 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8947 };
8948
8949 editor.highlight_background::<Type1>(
8950 vec![
8951 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8952 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8953 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8954 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8955 ],
8956 Color::red(),
8957 cx,
8958 );
8959 editor.highlight_background::<Type2>(
8960 vec![
8961 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8962 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8963 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8964 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8965 ],
8966 Color::green(),
8967 cx,
8968 );
8969
8970 let snapshot = editor.snapshot(cx);
8971 let mut highlighted_ranges = editor.background_highlights_in_range(
8972 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8973 &snapshot,
8974 );
8975 // Enforce a consistent ordering based on color without relying on the ordering of the
8976 // highlight's `TypeId` which is non-deterministic.
8977 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8978 assert_eq!(
8979 highlighted_ranges,
8980 &[
8981 (
8982 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8983 Color::green(),
8984 ),
8985 (
8986 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8987 Color::green(),
8988 ),
8989 (
8990 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
8991 Color::red(),
8992 ),
8993 (
8994 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
8995 Color::red(),
8996 ),
8997 ]
8998 );
8999 assert_eq!(
9000 editor.background_highlights_in_range(
9001 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9002 &snapshot,
9003 ),
9004 &[(
9005 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9006 Color::red(),
9007 )]
9008 );
9009 });
9010 }
9011
9012 #[test]
9013 fn test_combine_syntax_and_fuzzy_match_highlights() {
9014 let string = "abcdefghijklmnop";
9015 let syntax_ranges = [
9016 (
9017 0..3,
9018 HighlightStyle {
9019 color: Some(Color::red()),
9020 ..Default::default()
9021 },
9022 ),
9023 (
9024 4..8,
9025 HighlightStyle {
9026 color: Some(Color::green()),
9027 ..Default::default()
9028 },
9029 ),
9030 ];
9031 let match_indices = [4, 6, 7, 8];
9032 assert_eq!(
9033 combine_syntax_and_fuzzy_match_highlights(
9034 &string,
9035 Default::default(),
9036 syntax_ranges.into_iter(),
9037 &match_indices,
9038 ),
9039 &[
9040 (
9041 0..3,
9042 HighlightStyle {
9043 color: Some(Color::red()),
9044 ..Default::default()
9045 },
9046 ),
9047 (
9048 4..5,
9049 HighlightStyle {
9050 color: Some(Color::green()),
9051 weight: Some(fonts::Weight::BOLD),
9052 ..Default::default()
9053 },
9054 ),
9055 (
9056 5..6,
9057 HighlightStyle {
9058 color: Some(Color::green()),
9059 ..Default::default()
9060 },
9061 ),
9062 (
9063 6..8,
9064 HighlightStyle {
9065 color: Some(Color::green()),
9066 weight: Some(fonts::Weight::BOLD),
9067 ..Default::default()
9068 },
9069 ),
9070 (
9071 8..9,
9072 HighlightStyle {
9073 weight: Some(fonts::Weight::BOLD),
9074 ..Default::default()
9075 },
9076 ),
9077 ]
9078 );
9079 }
9080
9081 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9082 let point = DisplayPoint::new(row as u32, column as u32);
9083 point..point
9084 }
9085
9086 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9087 Editor::new(EditorMode::Full, buffer, None, None, cx)
9088 }
9089
9090 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9091 let settings = Settings::test(cx);
9092 cx.add_app_state(settings);
9093 }
9094}
9095
9096trait RangeExt<T> {
9097 fn sorted(&self) -> Range<T>;
9098 fn to_inclusive(&self) -> RangeInclusive<T>;
9099}
9100
9101impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9102 fn sorted(&self) -> Self {
9103 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9104 }
9105
9106 fn to_inclusive(&self) -> RangeInclusive<T> {
9107 self.start.clone()..=self.end.clone()
9108 }
9109}